CN104809866A - Non-contact optical data transmission and reading system, and transmission and reading method - Google Patents
Non-contact optical data transmission and reading system, and transmission and reading method Download PDFInfo
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- CN104809866A CN104809866A CN201510052901.XA CN201510052901A CN104809866A CN 104809866 A CN104809866 A CN 104809866A CN 201510052901 A CN201510052901 A CN 201510052901A CN 104809866 A CN104809866 A CN 104809866A
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Abstract
The invention relates to a non-contact optical data transmission and reading system, and a transmission and reading method. The non-contact optical data transmission and reading system comprises a data conversion module, a data emission module, a data receiving module, an aiming and locating module, and a power supply module which is used for providing the data conversion module, the data emission module, the data receiving module, and the aiming and locating module with electric power respectively; the data conversion module is connected with the data emission module and the data receiving module via electric connection respectively; the data emission module comprises a communication laser emission tube; the aiming and locating module comprises an auxiliary aiming laser emission tube; simultaneous working of the auxiliary aiming laser emission tube and the communication laser emission tube is realized; and the communication laser emission tube is used for emitting invisible light, and is guided by visible light emitted by the auxiliary aiming laser emission tube for accurate communication emission. The non-contact optical data transmission and reading system is capable of realizing middle-distance accurate data reading with aiming and locating indication; and sensitivity and anti-interference performance are both excellent.
Description
[
technical field]
The present invention relates to the reading of data, particularly relate to contactless digital independent, particularly relating to the contactless optical data transmission reading system for reading the data on the instruments such as ammeter, water meter or gas meter and transmission read method.
[
background technology]
Prior art is utilize common photodiode to carry out digital independent for reading the contactless optical data transmission reading system of the data on the instruments such as ammeter, water meter or gas meter, common photodiode is invisible light, be scattered light, light angle is large, easily causes multiple tested instrument to respond simultaneously, anti-interference is poor, light attenuation is fast, reads apart from short, is suitable for large-scale scanning, owing to not aiming at instruction, accurate reading can not be realized.
[
summary of the invention]
The technical problem to be solved in the present invention is to avoid above-mentioned the deficiencies in the prior art part and provides a kind of contactless optical data to transmit reading system and transmission read method, middle distance can be realized and accurately read data, have during accurate reading data and aim at location instruction, there is the advantages such as highly sensitive and anti-interference is good.
The technical scheme that the present invention solve the technical problem employing is:
There is provided a kind of contactless optical data to transmit reading system, comprise data conversion module, data transmission module and data reception module, and be respectively the power module that described data conversion module, data transmission module and data reception module provide electric power; Described data conversion module is electrically connected with described data transmission module and data reception module respectively; Described contactless optical data transmission reading system also comprises the aiming locating module being carried out by tested instrument aiming at location and guiding direction to described data transmission module; Described power module is returned described aiming locating module and is provided electric power; Described data transmission module comprises the communication laser power valve D2 that communication sends; Described aiming locating module has comprised the auxiliary auxiliary aiming laser power valve D1 aiming at positioning action; Described auxiliary aiming laser power valve D1 and communication laser power valve D2 works simultaneously, described auxiliary aiming laser power valve D1 sends visible ray to carry out aiming location and guides direction to the communication laser power valve D2 of described data transmission module by tested instrument, described communication laser power valve D2 sends invisible light and carry out communication transmission exactly under the auxiliary aiming laser power valve D1 of described aiming locating module sends the guide of visible ray.After described data conversion module receives the instruction of the tested instrument data of reading that fetch equipment sends, described data conversion module is transferred to described data transmission module by after this instruction transformation, the auxiliary aiming laser power valve D1 of described aiming locating module sends visible ray to be undertaken tested instrument aiming at location and guiding direction to the communication laser power valve D2 of described data transmission module, the communication laser power valve D2 of described data transmission module sends invisible light and exactly described instruction is sent to tested instrument under the auxiliary aiming laser power valve D1 of described aiming locating module sends the guide of visible ray, tested instrument sends the data to described data reception module after receiving this instruction, data back is given described data conversion module by described data reception module, then these data are sent to described fetch equipment by described data conversion module.
The visible ray that described auxiliary aiming laser power valve D1 sends and the invisible light that described communication laser power valve D2 sends are two bundles directional lights close to each other.
The distance that described auxiliary aiming laser power valve D1 sends between spot center point that the spot center point of visible ray and described communication laser power valve D2 send invisible light is: apart from they luminous starting point 1 meter of, and the distance between the spot center point of two bundle directional lights is not more than 1.5 centimetres; Apart from they luminous starting point 3 meters of, the distance between the spot center point of two bundle directional lights is not more than 2.0 centimetres, and apart from they luminous starting point 5 meters of, the distance between the 2 spot center points restrainting directional lights is not more than 3.0 centimetres.
Described auxiliary aiming laser power valve D1 and communication laser power valve D2 is fixed on same support, described support is provided with the first through hole and the second through hole that are parallel to each other, described auxiliary aiming laser power valve D1 is fixed in the first through hole of described support, and described communication laser power valve D2 is fixed in the second through hole of described support.
Distance L between the central axis of the first through hole of described support and the central axis of the second through hole is: R
1+ R
2≤ L≤R
1+ R
2+ 10 millimeters, wherein R
1be the radius of the first through hole, R
2it is the radius of the second through hole.
Described data conversion module comprises the first integrated circuit U1, and the model of this first integrated circuit U1 is 74HC02.Described data reception module comprises receiving tube D3, and the model of this receiving tube D3 is TSOP1838.
Described data conversion module comprises the first integrated circuit U1 and the first peripheral circuit, described first peripheral circuit comprises three resistance R1, R2, R3 and two electric capacity C1, C2, and a crystal oscillator Y1, the model of described first integrated circuit U1 is 74HC02, first pin of described first integrated circuit U1 is respectively by resistance R1, R2 is electrically connected to tripod and the 6th pin of described first integrated circuit U1, the crus secunda of described first integrated circuit U1 is by electric capacity C1 ground connection, the crus secunda of described first integrated circuit U1 is connected with tripod, tripod and the 5th pin of described first integrated circuit U1 are electrically connected with crystal oscillator Y1, 4th pin of described first integrated circuit U1 is connected with octal, 5th pin of described first integrated circuit U1 is connected with the 6th pin, 6th pin of described first integrated circuit U1 is by electric capacity C2 ground connection, the 7th pin ground connection of described first integrated circuit U1, 11 pin of described first integrated circuit U1, 12 pin and the tenth tripod unsettled, 14 pin of described first integrated circuit U1 is electrically connected to the output pin of described power module, 9th pin of described first integrated circuit U1 forms first node by resistance R3.Described data transmission module also comprises the second peripheral circuit, and this second peripheral circuit comprises an a resistance R5 and triode Q1; Described triode Q1 is NPN type triode, and its model is 8050; The positive pole of described communication laser power valve D2 is electrically connected to the output pin of described power module by resistance R5, the negative electricity of this communication laser power valve D2 is connected to the emitter of triode Q1, the grounded collector of triode Q1, the base stage of triode Q1 is electrically connected to the tenth pin of the first integrated circuit U1 of described data conversion module.Described data reception module comprises receiving tube D3 and the 3rd peripheral circuit, and the 3rd peripheral circuit comprises two resistance R6, R7 and two electric capacity C3, C4; The model of described receiving tube D3 is TSOP1838; First pin of described receiving tube D3 forms Section Point by resistance R7, this Section Point is connected with first node, the crus secunda ground connection of described receiving tube D3, the tripod of described receiving tube D3 is electrically connected to the output pin of described power module by resistance R6, the tripod of described receiving tube D3 is also by electric capacity C4 ground connection, and electric capacity C3 is connected electrically between resistance R6 and ground.Described aiming locating module also comprises 4th week limit circuit, and this 4th week limit circuit comprises a resistance; The minus earth of described auxiliary aiming laser power valve D1, the positive pole of this auxiliary aiming laser power valve D1 is electrically connected to the output pin of described power module by resistance R4.
Also provide a kind of contactless optical data to transmit read method, comprise the steps: setting data modular converter, this data conversion module receives the instruction of the tested instrument data of reading that fetch equipment sends; Setting data transmitter module, this data transmission module comprise send invisible light carry out communicate send communication laser power valve D2; Setting data receiver module 300; The aiming locating module being carried out by tested instrument aiming at location and guiding direction to described data transmission module is set, this aiming locating module has comprised the auxiliary auxiliary aiming laser power valve D1 aiming at positioning action, described auxiliary aiming laser power valve D1 and communication laser power valve D2 is worked simultaneously, and make described auxiliary aiming laser power valve D1 send visible ray tested instrument is carried out aim at location and give described data transmission module communication laser power valve D2 guide direction; And setting is respectively the power module that described data conversion module, data transmission module, data reception module and aiming locating module provide electric power; Described data conversion module is electrically connected with described data transmission module and data reception module respectively.After described data conversion module receives the instruction of the tested instrument data of reading that fetch equipment sends, described data conversion module is transferred to described data transmission module by after this instruction transformation, the auxiliary aiming laser power valve D1 of described aiming locating module sends visible ray to be undertaken tested instrument aiming at location and guiding direction to the communication laser power valve D2 of described data transmission module, the communication laser power valve D2 of described data transmission module sends invisible light and exactly described instruction is sent to tested instrument under the auxiliary aiming laser power valve D1 of described aiming locating module sends the guide of visible ray, tested instrument sends the data to described data reception module after receiving this instruction, data back is given described data conversion module by described data reception module, then these data are sent to described fetch equipment by described data conversion module.
The invisible light furnishing two that the visible ray send described auxiliary aiming laser power valve D1 and described communication laser power valve D2 send restraints directional light, and makes this two bundles directional light close to each other.
The distance sent by described auxiliary aiming laser power valve D1 between spot center point that the spot center point of visible ray and described communication laser power valve D2 send invisible light is adjusted to: apart from they luminous starting point 1 meter of, and the distance between the spot center point of two bundle directional lights is not more than 1.5 centimetres; Apart from they luminous starting point 3 meters of, the distance between the spot center point of two bundle directional lights is not more than 2.0 centimetres, and apart from they luminous starting point 5 meters of, the distance between the 2 spot center points restrainting directional lights is not more than 3.0 centimetres.
Described auxiliary aiming laser power valve D1 and communication laser power valve D2 is fixed on same support, described support is provided with the first through hole and the second through hole that are parallel to each other, described auxiliary aiming laser power valve D1 is fixed in the first through hole of described support, and described communication laser power valve D2 is fixed in the second through hole of described support; Distance L between the central axis of the first through hole of described support and the central axis of the second through hole is: R
1+ R
2≤ L≤R
1+ R
2+ 10 millimeters, wherein R
1be the radius of the first through hole, R
2it is the radius of the second through hole.
Compared with the existing technology comparatively, the beneficial effect of contactless optical data transmission reading system of the present invention and transmission read method is:
One, the communication laser power valve of data transmission module invisible light of the present invention replaces the general photodiode of prior art, and during LASER Discharge Tube transmission, the decay of light is very little, therefore can improve the distance of reading greatly; And LASER Discharge Tube has good spotlight effect, the angular sent out is little, can reduce read range, avoids multiple tested instrument and responds simultaneously, improve anti-interference;
Two, particularly also be provided with the aiming locating module being carried out by tested instrument aiming at location and guiding direction to described data transmission module, this aiming locating module has comprised the auxiliary auxiliary aiming laser power valve aiming at positioning action, the invisible light that the communication laser power valve that the visible ray utilizing auxiliary aiming laser power valve to send is data transmission module sends carries out aiming location, the place pointed by visible ray that auxiliary aiming laser power valve sends is exactly the place pointed by invisible light that communication laser power valve sends, communication laser power valve is served and well aims at positioning action.
In sum, contactless optical data of the present invention transmission reading system and transmission read method can realize middle distance and accurately read data, have and aim at location instruction when accurately reading data, have the advantages such as highly sensitive and anti-interference is good.
[
accompanying drawing explanation]
Fig. 1 is the square frame principle schematic diagram of contactless optical data of the present invention transmission reading system;
To be that the orthogonal projection of support of described contactless optical data transmission reading system is main look cross-sectional schematic to Fig. 2;
Fig. 3 is the orthogonal projection schematic top plan view of support shown in Fig. 2;
Fig. 4 is the physical circuit schematic diagram of the data conversion module 100 of described contactless optical data transmission reading system;
Fig. 5 is the data transmission module 200 of described contactless optical data transmission reading system and the physical circuit schematic diagram of aiming locating module 600;
Fig. 6 is the physical circuit schematic diagram of the data reception module 300 of described contactless optical data transmission reading system.
[embodiment]
Below in conjunction with each accompanying drawing, the present invention is described in further detail.
See Fig. 1 to Fig. 6, the present invention relates to a kind of contactless optical data transmission reading system, comprise data conversion module 100, data transmission module 200 and data reception module 300, and being respectively the power module 400 that described data conversion module 100, data transmission module 200 and data reception module 300 provide electric power, this power module 400 can provide the DC voltage of 3.3 volts, described data conversion module 100 is electrically connected with described data transmission module 200 and data reception module 300 respectively, described contactless optical data transmission reading system also comprises the aiming locating module 600 being carried out by tested instrument aiming at location and guiding direction to described data transmission module 200, described power module 400 is returned described aiming locating module 600 and is provided electric power, described data transmission module 200 comprises the communication laser power valve D2 that communication sends, described aiming locating module 600 has comprised the auxiliary auxiliary aiming laser power valve D1 aiming at positioning action, described auxiliary aiming laser power valve D1 and communication laser power valve D2 works simultaneously, auxiliary aiming laser power valve D1 and communication laser power valve D2 can to provide electric power to realize by power module 400 simultaneously, described auxiliary aiming laser power valve D1 sends visible ray to be undertaken tested instrument aiming at location and guiding direction to the communication laser power valve D2 of described data transmission module 200, described communication laser power valve D2 sends invisible light and carry out communication transmission exactly under the auxiliary aiming laser power valve D1 of described aiming locating module 600 sends the guide of visible ray.After described data conversion module 100 receives the instruction of the tested instrument data of reading that fetch equipment 500 sends, described data conversion module 100 will be transferred to described data transmission module 200 after this instruction transformation, the auxiliary aiming laser power valve D1 of described aiming locating module 600 sends visible ray to be undertaken tested instrument aiming at location and guiding direction to the communication laser power valve D2 of described data transmission module 200, the communication laser power valve D2 of described data transmission module 200 sends invisible light and exactly described instruction is sent to tested instrument under the auxiliary aiming laser power valve D1 of described aiming locating module 600 sends the guide of visible ray, tested instrument sends the data to described data reception module 300 after receiving this instruction, data back is given described data conversion module 100 by described data reception module 300, then these data are sent to described fetch equipment 500 by described data conversion module 100.
Data conversion module 100 of the present invention, data reception module 300 and power module 400 are all prior aries, do not repeat them here; Certain data conversion module of the present invention 100 and data reception module 300 also can adopt the physical circuit figure in Fig. 4 and Fig. 5 respectively, can describe in detail below; Data transmission module 200 of the present invention is except the general photodiode of communication laser power valve D2 and prior art is different, and its principle of work is the same with the principle of work of the data transmission module 200 of prior art, also repeats no more at this.
Together with contactless optical data transmission reading system of the present invention directly can design with fetch equipment 500, wherein data conversion module 100 is electrically connected with the control circuit of fetch equipment 500.The fetch equipment 500 that contactless optical data of the present invention transmission reading system is housed may be used for reading the data on the instruments such as ammeter, water meter or gas meter.The tested instruments such as above-mentioned ammeter, water meter or gas meter also need to be equipped with receiver module and transmitter module etc., and they do not belong to protection category of the present invention, repeat no more at this yet.
Fetch equipment 500 abbreviation that can be a kind of PDA, PDA be English " Personal Digital Assistant ", literally mean " personal digital assistant ", what have cries " handheld device ", is also called " palm PC ".
The visible ray that described auxiliary aiming laser power valve D1 sends and the invisible light that described communication laser power valve D2 sends are two bundles directional lights close to each other.
The distance that described auxiliary aiming laser power valve D1 sends between spot center point that the spot center point of visible ray and described communication laser power valve D2 send invisible light is: apart from they luminous starting point 1 meter of, and the distance between the spot center point of two bundle directional lights is not more than 1.5 centimetres; Apart from they luminous starting point 3 meters of, the distance between the spot center point of two bundle directional lights is not more than 2.0 centimetres, and apart from they luminous starting point 5 meters of, the distance between the 2 spot center points restrainting directional lights is not more than 3.0 centimetres.In general, the luminous starting point of auxiliary aiming laser power valve D1 and the luminous starting point of communication laser power valve D2 are adjusted to same level line, certainly they a little bit poorer relation is also little mutually; Their luminous starting points also can be understood as the laser head of auxiliary aiming laser power valve D1 and/or the laser head of communication laser power valve D2, the laser head alignment of the laser head of auxiliary aiming laser power valve D1 and communication laser power valve D2 is installed as far as possible, make them be positioned at same level line.
See Fig. 2, Fig. 3 and Fig. 5, described auxiliary aiming laser power valve D1 and communication laser power valve D2 is fixed on same support 900, described support 900 is provided with the first through hole 910 and the second through hole 920 be parallel to each other, described auxiliary aiming laser power valve D1 is fixed in the first through hole 910 of described support 900, and described communication laser power valve D2 is fixed in the second through hole 920 of described support 900.Distance L between the central axis of the first through hole 910 of described support 900 and the central axis of the second through hole 920 is: R
1+ R
2≤ L≤R
1+ R
2+ 10 millimeters, wherein R
1be the radius of the first through hole 910, R
2it is the radius of the second through hole 920.If together with contactless optical data transmission reading system of the present invention directly designs with fetch equipment 500, then support 900 can be fixed in the housing of fetch equipment 500.
See Fig. 1 and Fig. 4, described data conversion module 100 comprises the first integrated circuit U1, and the model of this first integrated circuit U1 is 74HC02.
See Fig. 1 and Fig. 6, described data reception module 300 comprises receiving tube D3, and the model of this receiving tube D3 is TSOP1838.
See Fig. 1 to Fig. 6, below just with a physical circuit describe contactless optical data of the present invention transmission reading system.
Described data conversion module 100 comprises the first integrated circuit U1 and the first peripheral circuit, described first peripheral circuit comprises three resistance R1, R2, R3 and two electric capacity C1, C2, and a crystal oscillator Y1, the model of described first integrated circuit U1 is 74HC02, the first pin 1Y of described first integrated circuit U1 is respectively by resistance R1, R2 is electrically connected to tripod 1B and the 6th pin 2B of described first integrated circuit U1, the crus secunda 1A of described first integrated circuit U1 is by electric capacity C1 ground connection, the crus secunda 1A of described first integrated circuit U1 is connected with tripod 1B, tripod 1B and the 5th pin 2A of described first integrated circuit U1 are electrically connected with crystal oscillator Y1, the 4th pin 2Y of described first integrated circuit U1 is connected with octal 3A, the 5th pin 2A of described first integrated circuit U1 is connected with the 6th pin 2B, the 6th pin 2B of described first integrated circuit U1 is by electric capacity C2 ground connection, the 7th pin GND ground connection of described first integrated circuit U1, the 11 pin 4A of described first integrated circuit U1, 12 pin 4B and the tenth tripod 4Y is unsettled, the 14 pin VCC of described first integrated circuit U1 is electrically connected to the output pin VCC of described power module 400, the 9th pin 3B of described first integrated circuit U1 forms first node UART TXD by resistance R3.Described data transmission module 200 comprises communication laser power valve D2 and second peripheral circuit of communication transmission, and this second peripheral circuit comprises an a resistance R5 and triode Q1; Described triode Q1 is NPN type triode, and its model is 8050; The positive pole of described communication laser power valve D2 is electrically connected to the output pin VCC of described power module 400 by resistance R5, the negative electricity of this communication laser power valve D2 is connected to the emitter E of triode Q1, the collector C ground connection of triode Q1, the base stage B of triode Q1 is electrically connected to the tenth pin 3Y of the first integrated circuit U1 of described data conversion module 100; Auxiliary aiming laser power valve D1 is fixed in the first through hole 910 of support 900.Described data reception module 300 comprises receiving tube D3 and the 3rd peripheral circuit, and the 3rd peripheral circuit comprises two resistance R6, R7 and two electric capacity C3, C4; The model of described receiving tube D3 is TSOP1838; First pin of described receiving tube D3 forms Section Point UART RXD by resistance R7, this Section Point UART RXD is connected with first node UART TXD, the crus secunda ground connection of described receiving tube D3, the tripod of described receiving tube D3 is electrically connected to the output pin VCC of described power module 400 by resistance R6, the tripod of described receiving tube D3 is also by electric capacity C4 ground connection, electric capacity C3 is connected electrically between resistance R6 and ground, namely this electric capacity C3 is connected electrically between the output pin VCC of power module 400 and ground, and first pin of receiving tube D3 is output pin.Described aiming locating module 600 has comprised the auxiliary auxiliary aiming laser power valve D1 and the 4th week limit circuit that aim at positioning action, and this 4th week limit circuit comprises a resistance R4; The minus earth of described auxiliary aiming laser power valve D1, the positive pole of this auxiliary aiming laser power valve D1 is electrically connected to the output pin VCC of described power module 400 by resistance R4; Communication laser power valve D2 is fixed in the second through hole 920 of support 900.
See Fig. 1 to Fig. 6, the invention still further relates to a kind of contactless optical data transmission read method, comprise the steps:
Setting data modular converter 100, this data conversion module 100 receives the instruction of the tested instrument data of reading that fetch equipment 500 sends;
Setting data transmitter module 200, this data transmission module 200 comprise send invisible light carry out communicate send communication laser power valve D2;
Setting data receiver module 300;
The aiming locating module 600 being carried out by tested instrument aiming at location and guiding direction to described data transmission module 200 is set, this aiming locating module 600 has comprised the auxiliary auxiliary aiming laser power valve D1 aiming at positioning action, described auxiliary aiming laser power valve D1 and communication laser power valve D2 is worked simultaneously, and make described auxiliary aiming laser power valve D1 send visible ray tested instrument is carried out aim at location and give described data transmission module 200 communication laser power valve D2 guide direction;
And setting is respectively described data conversion module 100, data transmission module 200, data reception module 300 and aims at the power module 400 that locating module 600 provides electric power;
Described data conversion module 100 is electrically connected with described data transmission module 200 and data reception module 300 respectively;
After described data conversion module 100 receives the instruction of the tested instrument data of reading that fetch equipment 500 sends, described data conversion module 100 will be transferred to described data transmission module 200 after this instruction transformation, the auxiliary aiming laser power valve D1 of described aiming locating module 600 sends visible ray to be undertaken tested instrument aiming at location and guiding direction to the communication laser power valve D2 of described data transmission module 200, the communication laser power valve D2 of described data transmission module 200 sends invisible light and exactly described instruction is sent to tested instrument under the auxiliary aiming laser power valve D1 of described aiming locating module 600 sends the guide of visible ray, tested instrument sends the data to described data reception module 300 after receiving this instruction, data back is given described data conversion module 100 by described data reception module 300, then these data are sent to described fetch equipment 500 by described data conversion module 100.
The invisible light furnishing two that the visible ray send described auxiliary aiming laser power valve D1 and described communication laser power valve D2 send restraints directional light, and makes this two bundles directional light close to each other.
The distance sent by described auxiliary aiming laser power valve D1 between spot center point that the spot center point of visible ray and described communication laser power valve D2 send invisible light is adjusted to: apart from they luminous starting point 1 meter of, and the distance between the spot center point of two bundle directional lights is not more than 1.5 centimetres; Apart from they luminous starting point 3 meters of, the distance between the spot center point of two bundle directional lights is not more than 2.0 centimetres, and apart from they luminous starting point 5 meters of, the distance between the 2 spot center points restrainting directional lights is not more than 3.0 centimetres.
Described auxiliary aiming laser power valve D1 and communication laser power valve D2 is fixed on same support 900, described support 900 is provided with the first through hole 910 and the second through hole 920 be parallel to each other, described auxiliary aiming laser power valve D1 is fixed in the first through hole 910 of described support 900, and described communication laser power valve D2 is fixed in the second through hole 920 of described support 900; Distance L between the central axis of the first through hole 910 of described support 900 and the central axis of the second through hole 920 is: R
1+ R
2≤ L≤R
1+ R
2+ 10 millimeters, wherein R
1be the radius of the first through hole 910, R
2it is the radius of the second through hole 920.
Communication laser power valve D2 of the present invention can adopt the LASER Discharge Tube of satisfied following technical requirement, the output power of this communication laser power valve D2 is not more than 7mW(milliwatt), at luminous starting point 1 meter of apart from this communication laser power valve D2, the effective light spot diameter of this communication laser power valve D2 is not more than 12 centimetres; At luminous starting point 3 meters of apart from this communication laser power valve D2, the effective light spot diameter of this communication laser power valve D2 is not more than 14 centimetres; At luminous starting point 5 meters of apart from this communication laser power valve D2, the effective light spot diameter of this communication laser power valve D2 is not more than 18 centimetres.As adopted a kind of 980nm (nanometer), 5 mW(milliwatts) invisible light infrared laser power valve.
The present invention assists aiming laser power valve D1 can adopt the LASER Discharge Tube of satisfied following technical requirement, the output power of this auxiliary aiming laser power valve D1 is not more than 7mW(milliwatt), at luminous starting point 5 meters of apart from this auxiliary aiming laser power valve D1, the effective light spot diameter of this auxiliary aiming laser power valve D1 is not less than 0.5 centimetre.Be 3.8 millimeters and power as adopted a kind of diameter be 7 mW(milliwatts) laser head, this laser head sends visible ray and carries out laser positioning.
The communication laser power valve D2 of contactless optical data transmission reading system of the present invention and transmission read method invisible light replaces the general photodiode of prior art, during LASER Discharge Tube D2 transmission, the decay of light is very little, therefore can improve the distance of reading greatly; And LASER Discharge Tube D2 has good spotlight effect, the angular sent out is little, can reduce read range, avoids multiple tested instrument and responds simultaneously, improve anti-interference; The visible ray particularly also utilizing auxiliary aiming laser power valve D1 to send is located for invisible light that communication laser power valve D2 sends carries out aimings, the place pointed by visible ray that auxiliary aiming laser power valve D1 sends is exactly the place pointed by invisible light that communication laser power valve D2 sends, and serves well aim at positioning action to communication laser power valve D2.
Contactless optical data transmission reading system of the present invention and transmission read method, for the hand-held PDA product of the applicant, achieve good technique effect, dark liking by numerous clients.
The above embodiment only have expressed the preferred embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention; It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention; Therefore, all equivalents of doing with the claims in the present invention scope and modification, all should belong to the covering scope of the claims in the present invention.
Claims (10)
1. a contactless optical data transmission reading system, comprise data conversion module (100), data transmission module (200) and data reception module (300), and be respectively the power module (400) that described data conversion module (100), data transmission module (200) and data reception module (300) provide electric power; Described data conversion module (100) is electrically connected with described data transmission module (200) and data reception module (300) respectively; It is characterized in that:
Also comprise the aiming locating module (600) being carried out by tested instrument aiming at location and guiding direction to described data transmission module (200); Described power module (400) is returned described aiming locating module (600) and is provided electric power; Described data transmission module (200) comprises the communication laser power valve D2 that communication sends; Described aiming locating module (600) has comprised the auxiliary auxiliary aiming laser power valve D1 aiming at positioning action; Described auxiliary aiming laser power valve D1 and communication laser power valve D2 works simultaneously, described auxiliary aiming laser power valve D1 sends visible ray to carry out aiming location and guides direction to the communication laser power valve D2 of described data transmission module (200) by tested instrument, described communication laser power valve D2 sends invisible light and carry out communication transmission exactly under the auxiliary aiming laser power valve D1 of described aiming locating module (600) sends the guide of visible ray;
After described data conversion module (100) receives the instruction of the tested instrument data of reading that fetch equipment (500) sends, described data conversion module (100) will be transferred to described data transmission module (200) after this instruction transformation, the auxiliary aiming laser power valve D1 of described aiming locating module (600) sends visible ray to be undertaken tested instrument aiming at location and guiding direction to the communication laser power valve D2 of described data transmission module (200), the communication laser power valve D2 of described data transmission module (200) sends invisible light and exactly described instruction is sent to tested instrument under the auxiliary aiming laser power valve D1 of described aiming locating module (600) sends the guide of visible ray, tested instrument sends the data to described data reception module (300) after receiving this instruction, data back is given described data conversion module (100) by described data reception module (300), then these data are sent to described fetch equipment (500) by described data conversion module (100).
2. contactless optical data transmission reading system according to claim 1, is characterized in that:
The visible ray that described auxiliary aiming laser power valve D1 sends and the invisible light that described communication laser power valve D2 sends are two bundles directional lights close to each other.
3. contactless optical data transmission reading system according to claim 1 and 2, is characterized in that:
The distance that described auxiliary aiming laser power valve D1 sends between spot center point that the spot center point of visible ray and described communication laser power valve D2 send invisible light is: apart from they luminous starting point 1 meter of, and the distance between the spot center point of two bundle directional lights is not more than 1.5 centimetres; Apart from they luminous starting point 3 meters of, the distance between the spot center point of two bundle directional lights is not more than 2.0 centimetres, and apart from they luminous starting point 5 meters of, the distance between the 2 spot center points restrainting directional lights is not more than 3.0 centimetres.
4. contactless optical data transmission reading system according to claim 1 and 2, is characterized in that:
Described auxiliary aiming laser power valve D1 and communication laser power valve D2 is fixed on same support (900), described support (900) is provided with the first through hole (910) and the second through hole (920) that are parallel to each other, described auxiliary aiming laser power valve D1 is fixed in first through hole (910) of described support (900), and described communication laser power valve D2 is fixed in second through hole (920) of described support (900).
5. contactless optical data transmission reading system according to claim 4, is characterized in that:
Distance (L) between the central axis of first through hole (910) of described support (900) and the central axis of the second through hole (920) is: (R
1+ R
2)≤L≤(R
1+ R
2)+10 millimeters, wherein R
1be the radius of the first through hole (910), R
2it is the radius of the second through hole (920).
6. contactless optical data transmission reading system according to claim 1 and 2, is characterized in that:
Described data conversion module (100) comprises the first integrated circuit U1 and the first peripheral circuit, described first peripheral circuit comprises three resistance R1, R2, R3 and two electric capacity C1, C2, and a crystal oscillator Y1, the model of described first integrated circuit U1 is 74HC02, first pin (1Y) of described first integrated circuit U1 is respectively by resistance R1, R2 is electrically connected to tripod (1B) and the 6th pin (2B) of described first integrated circuit U1, the crus secunda (1A) of described first integrated circuit U1 is by electric capacity C1 ground connection, the crus secunda (1A) of described first integrated circuit U1 is connected with tripod (1B), tripod (1B) and the 5th pin (2A) of described first integrated circuit U1 are electrically connected with crystal oscillator Y1, 4th pin (2Y) of described first integrated circuit U1 is connected with octal (3A), 5th pin (2A) of described first integrated circuit U1 is connected with the 6th pin (2B), 6th pin (2B) of described first integrated circuit U1 is by electric capacity C2 ground connection, 7th pin (GND) ground connection of described first integrated circuit U1, 11 pin (4A) of described first integrated circuit U1, 12 pin (4B) and the tenth tripod (4Y) unsettled, 14 pin (VCC) of described first integrated circuit U1 is electrically connected to the output pin (VCC) of described power module (400), 9th pin (3B) of described first integrated circuit U1 forms first node (UART TXD) by resistance R3,
Described data transmission module (200) also comprises the second peripheral circuit, and this second peripheral circuit comprises an a resistance R5 and triode Q1; Described triode Q1 is NPN type triode, and its model is 8050; The positive pole of described communication laser power valve D2 is electrically connected to the output pin (VCC) of described power module (400) by resistance R5, the negative electricity of this communication laser power valve D2 is connected to the emitter of triode Q1, the grounded collector of triode Q1, the base stage of triode Q1 is electrically connected to the tenth pin (3Y) of the first integrated circuit U1 of described data conversion module (100);
Described data reception module (300) comprises receiving tube D3 and the 3rd peripheral circuit, and the 3rd peripheral circuit comprises two resistance R6, R7 and two electric capacity C3, C4; The model of described receiving tube D3 is TSOP1838; First pin of described receiving tube D3 forms Section Point (UART RXD) by resistance R7, this Section Point (UART RXD) is connected with first node (UART TXD), the crus secunda ground connection of described receiving tube D3, the tripod of described receiving tube D3 is electrically connected to the output pin (VCC) of described power module (400) by resistance R6, the tripod of described receiving tube D3 is also by electric capacity C4 ground connection, and electric capacity C3 is connected electrically between resistance R6 and ground;
Described aiming locating module (600) also comprises 4th week limit circuit, and this 4th week limit circuit comprises a resistance R4; The minus earth of described auxiliary aiming laser power valve D1, the positive pole of this auxiliary aiming laser power valve D1 is electrically connected to the output pin (VCC) of described power module (400) by resistance R4.
7. a contactless optical data transmission read method, is characterized in that comprising the steps:
Setting data modular converter (100), this data conversion module (100) receives the instruction of the tested instrument data of reading that fetch equipment (500) sends;
Setting data transmitter module (200), this data transmission module (200) comprise send invisible light carry out communicate send communication laser power valve D2;
Setting data receiver module (300);
The aiming locating module (600) being carried out by tested instrument aiming at location and guiding direction to described data transmission module (200) is set, this aiming locating module (600) has comprised the auxiliary auxiliary aiming laser power valve D1 aiming at positioning action, described auxiliary aiming laser power valve D1 and communication laser power valve D2 is worked simultaneously, and make described auxiliary aiming laser power valve D1 send visible ray tested instrument is carried out aim at location and give described data transmission module (200) communication laser power valve D2 guide direction;
And setting is respectively described data conversion module (100), data transmission module (200), data reception module (300) and aims at the power module (400) that locating module (600) provides electric power;
Described data conversion module (100) is electrically connected with described data transmission module (200) and data reception module (300) respectively;
After described data conversion module (100) receives the instruction of the tested instrument data of reading that fetch equipment (500) sends, described data conversion module (100) will be transferred to described data transmission module (200) after this instruction transformation, the auxiliary aiming laser power valve D1 of described aiming locating module (600) sends visible ray to be undertaken tested instrument aiming at location and guiding direction to the communication laser power valve D2 of described data transmission module (200), the communication laser power valve D2 of described data transmission module (200) sends invisible light and exactly described instruction is sent to tested instrument under the auxiliary aiming laser power valve D1 of described aiming locating module (600) sends the guide of visible ray, tested instrument sends the data to described data reception module (300) after receiving this instruction, data back is given described data conversion module (100) by described data reception module (300), then these data are sent to described fetch equipment (500) by described data conversion module (100).
8. contactless optical data transmission read method according to claim 7, is characterized in that:
The invisible light furnishing two that the visible ray send described auxiliary aiming laser power valve D1 and described communication laser power valve D2 send restraints directional light, and makes this two bundles directional light close to each other.
9. the contactless optical data transmission read method according to claim 7 or 8, is characterized in that:
The distance sent by described auxiliary aiming laser power valve D1 between spot center point that the spot center point of visible ray and described communication laser power valve D2 send invisible light is adjusted to: apart from they luminous starting point 1 meter of, and the distance between the spot center point of two bundle directional lights is not more than 1.5 centimetres; Apart from they luminous starting point 3 meters of, the distance between the spot center point of two bundle directional lights is not more than 2.0 centimetres, and apart from they luminous starting point 5 meters of, the distance between the 2 spot center points restrainting directional lights is not more than 3.0 centimetres.
10. the contactless optical data transmission read method according to claim 7 or 8, is characterized in that:
Described auxiliary aiming laser power valve D1 and communication laser power valve D2 is fixed on same support (900), described support (900) is provided with the first through hole (910) and the second through hole (920) that are parallel to each other, described auxiliary aiming laser power valve D1 is fixed in first through hole (910) of described support (900), and described communication laser power valve D2 is fixed in second through hole (920) of described support (900); Distance (L) between the central axis of first through hole (910) of described support (900) and the central axis of the second through hole (920) is: (R
1+ R
2)≤L≤(R
1+ R
2)+10 millimeters, wherein R
1be the radius of the first through hole (910), R
2it is the radius of the second through hole (920).
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|---|---|
| CN104809866B (en) | 2018-02-27 |
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