CN101769948B

CN101769948B - Power supply device of test equipment

Info

Publication number: CN101769948B
Application number: CN2009100364191A
Authority: CN
Inventors: 陈忠贤
Original assignee: Kinpo Electronics China Co Ltd
Current assignee: Kinpo Electronics China Co Ltd
Priority date: 2009-01-05
Filing date: 2009-01-05
Publication date: 2012-02-29
Anticipated expiration: 2029-01-05
Also published as: CN101769948A

Abstract

The invention discloses a power supply device which is suitable for being configured to test equipment. The power supply device comprises an electronic type switching unit, a selecting signal generating unit, a power supply adjusting unit and an integrating and voltage-stabilizing unit, wherein the electronic type switching unit receives a first direct current power supply and outputs the first direct current power supply according to a switching signal; the selecting signal generating unit outputs a selecting signal; the power supply adjusting unit is provided with a plurality of adjusting circuits and electrically connected with the selecting signal generating unit; the power supply adjusting unit outputs an adjusting signal by one of the adjusting circuits according to the selecting signal; the integrating and voltage-stabilizing unit is electrically connected with the electronic type switching unit and the power supply adjusting unit respectively and outputs a second direct current power supply according to the first direct current power supply and the adjusting signal.

Description

The power supply device of testing apparatus

Technical field

The present invention relates to a kind of power supply device, relate in particular to a kind of power supply device that is applied in the testing apparatus with the electronic switch switching.

Background technology

Electronic product all need pass through test in stage and semi-finished product or finished product stage, after the affirmation function is normal, can be sent to next processing procedure or shipment.And to confirm whether product function normal, must provide a power supply to make electronic product running by testing apparatus usually after, just can detect.

In the existing testing apparatus, between device to be measured and power supply, can use a mechanical switch usually, whether transfer to device to be measured with the control power supply.So-called mechanical switch is to utilize mechanical action and the switching doing conducting or end, and for example pushbutton switch, thumb-acting switch, no-fuse switch or magnetic reed switch etc. all are to lean on mechanical action and with power turn-on or end.

Yet regular meeting causes the equipment shake in the process of mechanical action, and is easy to generate high-voltage pulse in the moment of conducting.High-voltage pulse is the equal of that energy to a to be measured device bigger than normal energy is provided moment, therefore when this energy during greater than the load of device to be measured, and damage device to be measured easily then.In addition, therefore mechanical switch must will be difficult to make the process automation of testing to promote efficient through manual operation usually.

Therefore, how to provide a kind of and can suppress in the testing apparatus, and can make the power supply device of test process automation, real one of the current important topic that belongs to by the high-voltage pulse that mechanical switch caused.

Summary of the invention

The objective of the invention is to provide a kind of and can suppress in the testing apparatus, and can make the power supply device of test process automation by the high-voltage pulse that mechanical switch caused to above-mentioned prior art problems.

For reaching above-mentioned purpose, the present invention provides a kind of power supply device to be suitable for being disposed at a testing apparatus, and power supply device comprises an electronic type switching unit, a selection signal generation unit, a power supply adjustment unit and an integrating and voltage-stabilizing unit.Electronic type switching unit receives one first direct supply, and exports said first direct supply according to a switching signal.Select signal generation unit output one to select signal.The power supply adjustment unit has several adjustment circuit, and electrically connects with selecting the signal generation unit.The power supply adjustment unit is according to one of them output one adjustment signal of selecting signal by said adjustment circuit.Integrating and voltage-stabilizing unit electrically connects with electronic type switching unit and power supply adjustment unit respectively, and exports one second direct supply according to first direct supply and adjustment signal respectively.

In a preferred embodiment of the present invention, electronic type switching unit comprises an electronic switch circuit, the conducting or end according to switching signal of said electronic switch circuit.

Particularly, said electronic type switching unit comprises: an input filter circuit receives said first direct supply, and after filtering, exports said first direct supply; One electronic switch circuit electrically connects with said input filter circuit, and exports said first direct supply according to said switching signal; One output filter circuit electrically connects with said electronic switch circuit, and after filtering, exports said first direct supply; One control triggering electric circuit is exported a trigger signals according to a power supply controlling signal; And one drive circuit, electrically connect with said control triggering electric circuit and said electronic switch circuit respectively, and export said switching signal according to said trigger signals.

Particularly, said integrating and voltage-stabilizing unit comprises: a signal integrated circuit electrically connects with said electronic type switching unit and said power supply adjustment unit respectively, and exports said second direct supply according to said first direct supply and said adjustment signal; And a filter circuit of pressure-stabilizing, electrically connect receiving said second direct supply with said signal integrated circuit, and after filtering said second direct supply of output.

The invention has the beneficial effects as follows that the power supply device of testing apparatus of the present invention is to utilize the electronic switch unit suppressing the generation of high pressure surging, protecting device to be measured, and electronic type switching unit is with electric signal control, therefore can make test process automation.In addition, utilize power supply adjustment unit and integrating and voltage-stabilizing unit to make and to supply with the different required power supplys of device to be measured, more can increase the range of application of power supply device by the different direct supply of power supply device output.

Description of drawings

Fig. 1 is the block schematic diagram of the preferred embodiment of the power supply device of testing apparatus of the present invention.

Fig. 2 is the detailed block schematic diagram of the preferred embodiment of the power supply device of testing apparatus of the present invention.

Fig. 3 is another detailed block schematic diagram of the preferred embodiment of the power supply device of testing apparatus of the present invention.

Fig. 4 is the equivalent circuit architectures figure of the preferred embodiment of the power supply device of testing apparatus of the present invention.

Element numbers explanation among the figure:

1 power supply device, 11 electronic type switching unit

111 input filter circuits, 112 electronic switch circuit

113 output filter circuits, 114 control triggering electric circuits

115 driving circuits 12 are selected the signal generation unit

121,121a decoding scheme 122 anti-phase driving circuits

13 power supply adjustment units, 131 adjustment circuit

14 integrating and voltage-stabilizing unit, 141 signal integrated circuits

142 filter circuit of pressure-stabilizing DC1, first direct supply

The DC2 second direct supply S _SLSelect signal

S _AdjAdjustment signal S _SWSwitch signal

S _PWPower supply controlling signal S _TRITrigger signals

S _SLRSignal is selected in anti-phase

Embodiment

Below will the preferred embodiment according to the power supply device of testing apparatus of the present invention be described with reference to relevant drawings, wherein components identical will be explained with identical label.

Please with reference to shown in Figure 1, the power supply device 1 of preferred embodiment of the present invention is disposed at a testing apparatus.Wherein, testing apparatus can be the testing apparatus of power supply unit or robot calculator, does not limit in this.

Power supply device 1 comprises an electronic type switching unit 11, and selects signal generation unit 12, a power supply adjustment unit 13 and an integrating and voltage-stabilizing unit 14.In the present embodiment, power supply device 1 is a direct current power supply device.

Electronic type switching unit 11 receives one first direct supply DC1 and exports the first direct supply DC1 according to a switching signal.Whether in the present embodiment, switch signal can export via electronic type switching unit 11 in order to control the first direct supply DC1.

Select 12 outputs one of signal generation unit to select signal S _SL, wherein select signal S _SLCan be analog signal or digital signal.In the present embodiment, select signal S _SLWith the digital signal is the example explanation, said selection signal S _SLOne group of signal can being formed by several bits (bit).

Power supply adjustment unit 13 electrically connects with selecting signal generation unit 12, and has several adjustment circuit 131.Power supply adjustment unit 13 is according to selecting signal S _SLAnd adjust signal S by one of them output one of said adjustment circuit 131 _Adj

Integrating and voltage-stabilizing unit 14 electrically connects with electronic type switching unit 11 and power supply adjustment unit 13 respectively.Integrating and voltage-stabilizing unit 14 is respectively according to the first direct supply DC1 and adjustment signal S _AdjAnd export one second direct supply DC2.

Please with reference to Fig. 2, with the power supply device 1 that further specifies preferred embodiment of the present invention.As shown in Figure 2, electronic type switching unit 11 has an input filter circuit 111, an electronic switch circuit 112, an output filter circuit 113, a control triggering electric circuit 114 and one drive circuit 115.

Input filter circuit 111 receives the first direct supply DC1, and after process filtering, exports the first direct supply DC1.In the present embodiment, input filter circuit 111 disturbs in order to electromagnetic interference (EMI) or the ripple of the filtering first direct supply DC1.

Electronic switch circuit 112 electrically connects with input filter circuit 111, and according to switching signal S _SWAnd export the first direct supply DC1.Wherein, utilize electronic switch circuit 112 to replace the mechanical switch in the known techniques, the contact shake in the time of can avoiding the mechanical switch conducting, and can avoid the high-voltage pulse that conducting moment produced.

Output filter circuit 113 electrically connects with electronic switch circuit 112, and after process filtering, exports the first direct supply DC1.In the present embodiment, the functional similarity of output filter circuit 113 and input filter circuit 111 is used so that the waveform of the first direct supply DC1 is more stable.

Control triggering electric circuit 114 is according to a power supply controlling signal S _PWAnd export a trigger signals S _TRIIn the present embodiment, power supply controlling signal S _PWBy the conducting of a power switch or by control, the shake that can avoid power switch to produce through control triggering electric circuit 114 influences the waveform that electronic switch circuit 112 is exported.

Driving circuit 115 electrically connects with control triggering electric circuit 114 and electronic switch circuit 112 respectively, and according to trigger signals S _TRIAnd signal S is switched in output _SWIn the present embodiment, driving circuit 115 is with trigger signals S _TRIAmplify, be enough to drive the power and the voltage of electronic switch circuit 112, and make electronic switch circuit 112 be able to preferably conducting or end with generation.

Select signal generation unit 12 to comprise a decoding scheme 121.Decoding scheme 121 is exported an input code (for example binary-coded decimal) decipher and is selected signal S _SLIn the present embodiment, also can via an amplifying circuit signal be amplified again by the signal of gained after decoding scheme 121 deciphers after again output select signal S _SLIn other words, decoding scheme 121 can directly electrically connect said adjustment circuit 131, also can electrically connect said adjustment circuit 131 again via amplifying circuit, does not limit at this.

In addition, selection signal generation unit 12 also can be as shown in Figure 3, comprises a decoding scheme 121a and an anti-phase driving circuit 122 of mutual electric connection.Wherein, decoding scheme 121a exports an anti-phase and selects signal S _SLR, and anti-phase driving circuit 122 is selected signal S according to anti-phase _SLRAnd signal S is selected in output _SL

Please continue with reference to shown in Figure 2, integrating and voltage-stabilizing unit 14 comprises a signal integrated circuit 141 and a filter circuit of pressure-stabilizing 142 of mutual electric connection.Wherein, signal integrated circuit 141 electrically connects with electronic type switching unit 11 and power supply adjustment unit 13 respectively, and according to the first direct supply DC1 and adjustment signal S _AdjAnd export the second direct supply DC2.Filter circuit of pressure-stabilizing 142 receives the second direct supply DC2, and after filtering, exports the second stable direct supply DC2.

Below please refer again to shown in Figure 4, with the equivalent circuit architectures figure of the power supply device 1 of the testing apparatus of instance explanation preferred embodiment of the present invention.

As shown in Figure 4, input filter circuit 111, output filter circuit 113 and filter circuit of pressure-stabilizing 142 are made up of capacitor respectively; Electronic switch circuit 112 is made up of transistor, and at this, transistor can be elements such as FET or BJT; Control triggering electric circuit 114 mainly produces trigger signals S by control IC collocation peripheral circuit _TRIDriving circuit 115 mainly is made up of drive IC and transistor; Decoding scheme 121 or 121a mainly are made up of volume/code translator collocation peripheral circuit; Anti-phase driving circuit 122 mainly is made up of phase inverter (inverter buffer) and amplifier; Each adjusts a switching element and the variohm that circuit 131 comprises mutual electric connection, and wherein switching device is according to selecting signal S _SLWith conducting or end, and variohm is exported adjustment signal S according to the difference of its resistance _AdjAnd signal integrated circuit 141 mainly also is made up of IC collocation peripheral circuit.

In sum; Power supply device according to testing apparatus of the present invention is to utilize electronic type switching unit to suppress the generation of high pressure pulse wave; To protect device to be measured; And the electronic switch unit is with electric signal control, therefore can make test process automation, and the shake that can avoid traditional mechanical formula switch to be caused.In addition, utilize power supply adjustment unit and integrating and voltage-stabilizing unit to make and to supply with the different required power supplys of device to be measured, more can increase the range of application of power supply device by the different direct supply of power supply device output.

The above is merely illustrative, but not is restricted.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the interest field of the present invention its equivalent modifications of carrying out or change.

Claims

1. a power supply device is suitable for being disposed at a testing apparatus, and said power supply device comprises:

One electronic type switching unit, said electronic type switching unit receive one first direct supply, and export said first direct supply according to a switching signal;

One selects the signal generation unit, and signal is selected in output one;

One power supply adjustment unit has several adjustment circuit, and said power supply adjustment unit and said selection signal generation unit electrically connect, and according to said selection signal one of them output one adjustment signal by said adjustment circuit; And

One integrating and voltage-stabilizing unit electrically connects with said electronic type switching unit and said power supply adjustment unit respectively, and said integrating and voltage-stabilizing unit is exported one second direct supply according to said first direct supply and said adjustment signal respectively;

Said electronic type switching unit comprises:

One input filter circuit receives said first direct supply, and after filtering, exports said first direct supply;

One electronic switch circuit electrically connects with said input filter circuit, and exports said first direct supply according to said switching signal;

One output filter circuit electrically connects with said electronic switch circuit, and after filtering, exports said first direct supply;

One control triggering electric circuit is exported a trigger signals according to a power supply controlling signal; And

One drive circuit electrically connects with said control triggering electric circuit and said electronic switch circuit respectively, and exports said switching signal according to said trigger signals;

Said integrating and voltage-stabilizing unit comprises:

One signal integrated circuit electrically connects with said electronic type switching unit and said power supply adjustment unit respectively, and exports said second direct supply according to said first direct supply and said adjustment signal; And

One filter circuit of pressure-stabilizing electrically connects receiving said second direct supply with said signal integrated circuit, and after filtering said second direct supply of output.

2. power supply device as claimed in claim 1 is characterized in that: the said circuit of respectively adjusting comprises:

One switches element, according to said selection signal with conducting or end; And

One variohm electrically connects with said switching device, and exports said adjustment signal.

3. power supply device as claimed in claim 1 is characterized in that: said selection signal generation unit comprises:

One decoding scheme is exported said selection signal with an input code decipher.

4. power supply device as claimed in claim 1 is characterized in that: said selection signal generation unit comprises:

One decoding scheme is exported an input code decipher one anti-phase and is selected signal; And

One anti-phase driving circuit electrically connects with said decoding scheme, and selects signal and export said selection signal according to said anti-phase.