CN104714120A - Control guide detection circuit and device for charging pile - Google Patents
Control guide detection circuit and device for charging pile Download PDFInfo
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- CN104714120A CN104714120A CN201310694141.3A CN201310694141A CN104714120A CN 104714120 A CN104714120 A CN 104714120A CN 201310694141 A CN201310694141 A CN 201310694141A CN 104714120 A CN104714120 A CN 104714120A
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Abstract
The invention discloses a control guide detection circuit and device for a charging pile. The control guide detection circuit for the charging pile comprises a central processing unit, a voltage detection module connected with the central processing unit and used for detecting the guide voltage of the charging pile, a PWM detection module connected with the central processing unit and used for detecting the duty ratio of the PWM waveform of the charging pile, an interface module used for being connected with a charging cable and connected with the central processing unit, a man-machine interaction module connected with the central processing unit, and a power supply module connected with the central processing unit, the voltage detection module, the PWM detection module and the man-machine interaction module. By the adoption of the control guide detection circuit and device, the problem that the charging process of the charging pile can not be detected in the prior art is solved, the charging pile is controlled, guided and detected, and safety is guaranteed.
Description
Technical field
The present invention relates to technical field of electric power, in particular to a kind of control guiding testing circuit and device of charging pile.
Background technology
Atmospheric pollution increasingly sharpens, and electric automobile is also more and more universal, and the application of electrically-charging equipment also gets more and more, and the stable popularization directly affecting electric automobile of its performance, so the safety and reliability of charging process is most important.But, but do not have the safety and reliability of corresponding checkout equipment to charging process to detect at present.
For the problem that cannot detect charging pile charging process in correlation technique, at present effective solution is not yet proposed.
Summary of the invention
Fundamental purpose of the present invention is the control guiding testing circuit and the device that provide a kind of charging pile, to solve the problem that cannot detect charging pile charging process in prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of control guiding testing circuit of charging pile, comprising: central processing unit; Voltage detection module, is connected with central processing unit, for detecting the steering voltage of charging pile; PWM detection module, is connected with central processing unit, for detecting the dutycycle of the PWM waveform of charging pile; Interface module, for connecting charging cable, and is connected with central processing unit; Human-computer interaction module, is connected with central processing unit; And supply module, be all connected with human-computer interaction module with central processing unit, voltage detection module, PWM detection module.
Further, voltage detection module comprises: operational amplifier, and output terminal is connected with central processing unit, and inverting input is connected with first node, and wherein, first node is the node between the output terminal of operational amplifier and central processing unit; First resistance, is connected between the normal phase input end of operational amplifier and the voltage detecting end of charging pile; Second resistance, is connected between Section Point and signal ground, and wherein, Section Point is the node between the first resistance and the normal phase input end of operational amplifier; Magnetic bead, is connected between the first resistance and voltage detecting end; First electric capacity, is connected to the 3rd between node and signal ground, and wherein, the 3rd node is the node between magnetic bead and voltage detecting end; And second electric capacity, be connected between first node and signal ground.
Further, voltage detection module also comprises: the first diode, and anode is connected with magnetic bead, and negative electrode is connected with the first resistance; And second diode, anode is connected with signal ground, and negative electrode is connected to the 3rd node.
Further, PWM detection module comprises: opto-coupler chip, is connected with central processing unit; First field effect transistor, grid is connected to the first output terminal of PWM waveform, and source electrode is connected to signal ground; 3rd resistance, between the drain electrode being connected to the first field effect transistor and opto-coupler chip; Second field effect transistor, grid is connected to the second output terminal of PWM waveform, and drain electrode is connected to the first voltage source, and source electrode is connected to signal ground; 4th resistance, between the drain electrode being connected to the first voltage source and the second field effect transistor; And the 5th resistance, be connected between the 4th nodes domains opto-coupler chip, wherein, the 4th node is the node between the drain electrode of the second field effect transistor and the 4th resistance.
Further, human-computer interaction module comprises: display screen, is connected with central processing unit; And filtration module, be connected between supply module and display screen.
Further, supply module comprises: the first voltage-regulation chip, and input end is connected with the first voltage source, and output terminal is for exporting the first voltage, and wherein, the voltage of the first voltage source is greater than the first voltage; And the second voltage-regulation chip, input is single to be connected with the output terminal of the first voltage-regulation chip, and output terminal is for exporting the second voltage, and wherein, the first voltage is greater than the second voltage.
Further, control guiding testing circuit also to comprise: storage chip, is connected with central processing unit.
To achieve these goals, according to a further aspect in the invention, provide a kind of control guiding pick-up unit of charging pile, comprise the control guiding testing circuit of any one charging pile that foregoing of the present invention provides.
The present invention adopts the control guiding testing circuit with the charging pile of following structure: central processing unit; Voltage detection module, is connected with central processing unit, for detecting the steering voltage of charging pile; PWM detection module, is connected with central processing unit, for detecting the dutycycle of the PWM waveform of charging pile; Interface module, for connecting charging cable, and is connected with central processing unit; Human-computer interaction module, is connected with central processing unit; And supply module, be all connected with human-computer interaction module with central processing unit, voltage detection module, PWM detection module.Charging cable is connected by interface module, the dutycycle of the steering voltage of charging pile, the PWM waveform of PWM detection module detection charging pile is detected by voltage detection module, and undertaken controlling and processing by people's circle interactive module and central processing unit, achieve and the safety and reliability of charging process is detected, solve the problem that cannot detect charging pile charging process in prior art, and then reach to charging pile carry out control guiding detect, for guarantee is made in security.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the control guiding testing circuit according to the charging pile of the embodiment of the present invention;
Fig. 2 is the circuit diagram of central processing unit in the control guiding testing circuit according to the charging pile of the embodiment of the present invention;
Fig. 3 is the circuit diagram of voltage detection module in the control guiding testing circuit according to the charging pile of the embodiment of the present invention;
Fig. 4 is the circuit diagram of PWM detection module in the control guiding testing circuit according to the charging pile of the embodiment of the present invention;
Fig. 5 is the circuit diagram of human-computer interaction module in the control guiding testing circuit according to the charging pile of the embodiment of the present invention;
Fig. 6 is the circuit diagram of supply module in the control guiding testing circuit according to the charging pile of the embodiment of the present invention; And
Fig. 7 is the circuit diagram of storage chip in the control guiding testing circuit according to the charging pile of the embodiment of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Embodiments provide a kind of control guiding testing circuit of charging pile, below the control guiding testing circuit of the charging pile that the embodiment of the present invention provides be specifically introduced:
Fig. 1 is the schematic diagram of the control guiding testing circuit according to the charging pile of the embodiment of the present invention, as shown in Figure 1, this control guiding testing circuit mainly comprises: central processing unit 10, voltage detection module 20, PWM(width modulation Pulse-Width Modulation, be called for short PWM) detection module 30, interface module 40, human-computer interaction module 50 and supply module 60, wherein:
Voltage detection module 20, PWM detection module 30, interface module 40 are all connected with central processing unit 10 with human-computer interaction module 50, and voltage detection module 20 for detecting the steering voltage of charging pile, and then determines the charging stage of charging pile.PWM detection module 30 is for detecting the dutycycle of the PWM waveform of charging pile.Interface module 40 is for connecting charging cable, and in embodiments of the present invention, interface module 40 can adopt any one charging socket in prior art, is used for simulating car end interface, and when detecting charging pile, interface module 40 is connected with charging cable.Human-computer interaction module 50, is used for showing Detection of content and result, and can receives the detection instruction of detection person, determine concrete test item.Supply module 60 is all connected with human-computer interaction module 50 with central processing unit 10, voltage detection module 20, PWM detection module 30, for providing electricity consumption support for each several part.
The control guiding testing circuit of the charging pile that the embodiment of the present invention provides, charging cable is connected by interface module, the dutycycle of the steering voltage of charging pile, the PWM waveform of PWM detection module detection charging pile is detected by voltage detection module, and undertaken controlling and processing by people's circle interactive module and central processing unit, achieve and the safety and reliability of charging process is detected, solve the problem that cannot detect charging pile charging process in prior art, and then reach to charging pile carry out control guiding detect, for guarantee is made in security.
Particularly, the physical circuit of central processing unit 10 is shown in Figure 2, as shown in Figure 2, central processing unit 10 mainly comprises the peripheral circuit of processor chips STM32F107 and these processor chips, its peripheral circuit mainly comprises crystal oscillating circuit and reset circuit, wherein, crystal oscillating circuit comprises the first crystal oscillating circuit be made up of crystal oscillator X1, electric capacity C2 and electric capacity C4, and the second crystal oscillating circuit be made up of crystal oscillator X2, electric capacity C12 and electric capacity C13.Reset circuit comprises the first reset circuit be made up of interrupteur SW 1 and resistance R4, and the second reset circuit be made up of interrupteur SW 2 and resistance R9.
Fig. 3 is the circuit diagram of voltage detection module 20 in the control guiding testing circuit according to the charging pile of the embodiment of the present invention, as shown in Figure 3, voltage detection module 20 mainly comprises operational amplifier B, the first resistance R46, the second resistance R47, magnetic bead FB21, the first electric capacity C77 and the second electric capacity C78, wherein, the output terminal of operational amplifier B is connected with central processing unit 10, inverting input is connected with first node, wherein, first node is the node between the output terminal of operational amplifier B and central processing unit 10.First resistance R46 is connected between the normal phase input end of operational amplifier B and the voltage detecting end of charging pile.Second resistance R47 is connected between Section Point and signal ground, and wherein, Section Point is the node between the first resistance R46 and the normal phase input end of operational amplifier B.Magnetic bead FB21 is connected between the first resistance R46 and voltage detecting end.First electric capacity C77 is connected to the 3rd between node and signal ground, and wherein, the 3rd node is the node between magnetic bead FB21 and voltage detecting end.Second electric capacity C78, is connected between first node and signal ground.
In the foregoing circuit of voltage detection module 20, the second resistance R47 of first resistance R46 and the 51K of 200K forms bleeder circuit, to reduce input voltage, the first electric capacity C77 of 10nF and magnetic bead FB21 and operational amplifier B forms filtering circuit, with filtering noise, whole circuit is signal conditioning circuit, and the simulating signal of the steering voltage detected is sent into central processing unit 10 by analog to digital converter.
Further, voltage detection module 20 also comprises the first diode D8 and the second diode T14, and wherein, the anode of the first diode D8 is connected with magnetic bead FB21, and negative electrode is connected with the first resistance R46.The anode of the second diode T14 is connected with signal ground, and negative electrode is connected to the 3rd node, and wherein, the second diode T14 is transient voltage suppressor.
Fig. 4 is the circuit diagram of PWM detection module 30 in the control guiding testing circuit according to the charging pile of the embodiment of the present invention, as shown in Figure 4, PWM detection module 30 mainly comprises opto-coupler chip U3, the first field effect transistor Q1, the 3rd resistance R32, the second field effect transistor Q2, the 4th resistance R42 and the 5th resistance R36, wherein, opto-coupler chip U3 is connected with central processing unit 10, and opto-coupler chip U3 is connected 3.3V direct current supply voltage by resistance R33 with R37.The grid of the first field effect transistor Q1 is connected to the first output terminal of PWM waveform by resistance R30, source electrode is connected to signal ground, and drain electrode is connected to grid by resistance R25 and R24 successively.3rd resistance R32 is connected between the drain electrode of the first field effect transistor Q1 and opto-coupler chip U3.The grid of the second field effect transistor Q2 is connected to the second output terminal of PWM waveform by resistance R46, drain electrode is connected to the first voltage source (12V direct voltage source), and grid is also connected to this first voltage source by resistance R44, and source electrode is connected to signal ground.4th resistance R42 is connected between the drain electrode of the first voltage source and the second field effect transistor Q2.5th resistance R36 is connected between the 4th nodes domains opto-coupler chip U3, and wherein, the 4th node is the node between the drain electrode of the second field effect transistor Q2 and the 4th resistance R42.
In the foregoing circuit of PWM detection module 30, model is the first field effect transistor Q1 and the second field effect transistor Q2 formation driving circuit of 2N7002, to strengthen the current driving ability of input, and increases the input range of voltage; Model is that the opto-coupler chip U3 of TLP281 plays voltage transformation effect, voltage is become central processing unit 10 acceptable 0 to 3.3V level.
Fig. 5 is the circuit diagram of human-computer interaction module 50 in the control guiding testing circuit according to the charging pile of the embodiment of the present invention, as shown in Figure 5, human-computer interaction module 50 mainly comprises display screen JP6 and filtration module, wherein, display screen JP6 is connected with central processing unit 10, in embodiments of the present invention, display screen JP6 can adopt the matrix LCD of 128*64, be connected with central processing unit 10 by SPI interface, filtration module is connected between supply module 60 and display screen, to carry out power filter to display screen JP6, wherein, filtration module mainly comprises magnetic bead FBLCD, electric capacity ZDC, electric capacity C38B and electric capacity C38.In addition, human-computer interaction module 50 can also comprise keyboard interface, and to connect keyboard, in embodiments of the present invention, keyboard interface can adopt the interface of DB9, to facilitate installation.
Fig. 6 is the circuit diagram of supply module 60 in the control guiding testing circuit according to the charging pile of the embodiment of the present invention, as shown in Figure 6, supply module 60 mainly comprises the first voltage-regulation chip U7 and the second voltage-regulation chip U5, wherein, first voltage-regulation chip U7 input end is connected with the first voltage source, output terminal is for exporting the first voltage, wherein, the voltage of the first voltage source is greater than the first voltage, second voltage-regulation chip U5 inputs list and is connected with the output terminal of the first voltage-regulation chip U7, output terminal is for exporting the second voltage, wherein, first voltage is greater than the second voltage.
In embodiments of the present invention, with the first voltage for 5V DC voltage, second voltage is 3.3V DC voltage is the circuit formation that example illustrates supply module 60, wherein, first voltage-regulation chip U7 can adopt DC-DC converter, 12V voltage is become 5V voltage, and the components and parts forming its peripheral circuit comprise electric capacity C49, diode D5,33Uh/2A magnetic shielding chip inductor L1 and electric capacity C50.Second voltage-regulation chip U5 can adopt LDO, and 5V voltage is become 3.3V voltage, and the components and parts forming its peripheral circuit comprise electric capacity C29, C30, C28 and C31.
Further, the control guiding testing circuit of the embodiment of the present invention also comprises storage chip U2, this storage chip U2 is connected with central processing unit 10, as the Memory Extension chip of central processing unit 10, for storing Detection of content and result, Fig. 7 is the circuit diagram of storage chip, as shown in Figure 7, in embodiments of the present invention, storage chip U2 can adopt model to be the FLASH storage chip of AT45DB161.
In addition, the embodiment of the present invention additionally provides a kind of control guiding pick-up unit of charging pile, and this control guiding pick-up unit comprises the control guiding testing circuit of any one charging pile that foregoing of the present invention provides.
As can be seen from the above description, present invention achieves and the safety and reliability of charging process is detected, reach as the effect of guarantee is made in security.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a control guiding testing circuit for charging pile, is characterized in that, comprising:
Central processing unit (10);
Voltage detection module (20), is connected with described central processing unit (10), for detecting the steering voltage of described charging pile;
PWM detection module (30), is connected with described central processing unit (10), for detecting the dutycycle of the PWM waveform of described charging pile;
Interface module (40), for connecting charging cable, and is connected with described central processing unit (10);
Human-computer interaction module (50), is connected with described central processing unit (10); And
Supply module (60), is all connected with described human-computer interaction module (50) with described central processing unit (10), described voltage detection module (20), described PWM detection module (30).
2. control guiding testing circuit according to claim 1, it is characterized in that, described voltage detection module (20) comprising:
Operational amplifier (B), output terminal is connected with described central processing unit (10), and inverting input is connected with first node, and wherein, described first node is the node between the output terminal of described operational amplifier (B) and described central processing unit (10);
First resistance (R46), between the normal phase input end being connected to described operational amplifier (B) and the voltage detecting end of described charging pile;
Second resistance (R47), is connected between Section Point and signal ground, and wherein, described Section Point is the node between the normal phase input end of described first resistance (R46) and described operational amplifier (B);
Magnetic bead (FB21), is connected between described first resistance (R46) and described voltage detecting end;
First electric capacity (C77), is connected to the 3rd between node and signal ground, and wherein, described 3rd node is the node between described magnetic bead (FB21) and described voltage detecting end; And
Second electric capacity (C78), is connected between described first node and signal ground.
3. control guiding testing circuit according to claim 2, it is characterized in that, described voltage detection module (20) also comprises:
First diode (D8), anode is connected with described magnetic bead (FB21), and negative electrode is connected with described first resistance (R46); And
Second diode (T14), anode is connected with signal ground, and negative electrode is connected to described 3rd node.
4. control guiding testing circuit according to claim 1, it is characterized in that, described PWM detection module (30) comprising:
Opto-coupler chip (U3), is connected with described central processing unit (10);
First field effect transistor (Q1), grid is connected to the first output terminal of described PWM waveform, and source electrode is connected to signal ground;
3rd resistance (R32), between the drain electrode being connected to described first field effect transistor (Q1) and described opto-coupler chip (U3);
Second field effect transistor (Q2), grid is connected to the second output terminal of described PWM waveform, and drain electrode is connected to the first voltage source, and source electrode is connected to signal ground;
4th resistance (R42), between the drain electrode being connected to described first voltage source and described second field effect transistor (Q2); And
5th resistance (R36), is connected to described in the 4th nodes domains between opto-coupler chip (U3), and wherein, described 4th node is the node between the drain electrode of described second field effect transistor (Q2) and described 4th resistance (R42).
5. control guiding testing circuit according to claim 1, it is characterized in that, described human-computer interaction module (50) comprising:
Display screen (JP6), is connected with described central processing unit (10); And
Filtration module, is connected between described supply module (60) and described display screen.
6. control guiding testing circuit according to claim 1, it is characterized in that, described supply module (60) comprising:
First voltage-regulation chip (U7), input end is connected with the first voltage source, and output terminal is for exporting the first voltage, and wherein, the voltage of described first voltage source is greater than described first voltage; And
Second voltage-regulation chip (U5), input is single to be connected with the output terminal of described first voltage-regulation chip (U7), and output terminal is for exporting the second voltage, and wherein, described first voltage is greater than described second voltage.
7. control guiding testing circuit according to claim 1, is characterized in that, described control guiding testing circuit also comprises:
Storage chip (U2), is connected with described central processing unit (10).
8. a control guiding pick-up unit for charging pile, is characterized in that, comprises the control guiding testing circuit of the charging pile according to any one of claim 1 to 7.
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| CN201310694141.3A CN104714120A (en) | 2013-12-17 | 2013-12-17 | Control guide detection circuit and device for charging pile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310694141.3A CN104714120A (en) | 2013-12-17 | 2013-12-17 | Control guide detection circuit and device for charging pile |
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| CN104714120A true CN104714120A (en) | 2015-06-17 |
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| CN201310694141.3A Pending CN104714120A (en) | 2013-12-17 | 2013-12-17 | Control guide detection circuit and device for charging pile |
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Cited By (1)
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| CN107015049A (en) * | 2017-05-03 | 2017-08-04 | 长春捷翼汽车零部件有限公司 | Control and protection device on intelligent high reliability electric automobile cable |
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Application publication date: 20150617 |