CN205120807U - Signal acquisition circuit of resistive voltage divider formula sensor - Google Patents
Signal acquisition circuit of resistive voltage divider formula sensor Download PDFInfo
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- CN205120807U CN205120807U CN201520908302.9U CN201520908302U CN205120807U CN 205120807 U CN205120807 U CN 205120807U CN 201520908302 U CN201520908302 U CN 201520908302U CN 205120807 U CN205120807 U CN 205120807U
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Abstract
The utility model discloses a signal acquisition circuit of resistive voltage divider formula sensor. This circuit includes: through resistive voltage divider matching circuit, resistive voltage divider matching circuit's input is surveyed the component with the quilt and is connected, and resistive voltage divider matching circuit includes fixed divider resistance and the adjustable divider resistance who establishes ties, and adjustable divider resistance is used for adjusting resistive voltage divider matching circuit's matching circuit 1, and pick -up chip, pick -up chip's input is connected with resistive voltage divider matching circuit's output for output voltage to resistive voltage divider matching circuit gathers. Through the utility model discloses, the problem of the unable compatible different electric pressure systems of signal acquisition circuit of resistive voltage divider formula sensor in the correlation technique has been solved.
Description
Technical field
The utility model relates to circuit field, in particular to a kind of signal acquisition circuit of electric resistance partial pressure type sensor.
Background technology
Electric resistance partial pressure type sensor operating principles is simple, has a wide range of applications in the controls.In engineering, the voltage signal grade of different system is different, has 5V in such as automotive electronics, 12V, the different electrically grade of 24V, the system of different electrically grade needs to select different Acquisition Circuit, and the signal acquisition circuit of traditional electric resistance partial pressure type sensor cannot be applied to various working.Therefore, needing one can be applied to various working, or interface can compatible multiple peripheral hardware hardware and software platform design product.
Signal acquisition circuit for electric resistance partial pressure type sensor in correlation technique cannot the problem of compatible different electric pressure system, not yet proposes effective solution at present.
Utility model content
Fundamental purpose of the present utility model is the signal acquisition circuit providing a kind of electric resistance partial pressure type sensor, cannot the problem of compatible different electric pressure system with the signal acquisition circuit solving electric resistance partial pressure type sensor in correlation technique.
To achieve these goals, according to an aspect of the present utility model, a kind of signal acquisition circuit of electric resistance partial pressure type sensor is provided.This circuit comprises: electric resistance partial pressure match circuit, the input end of electric resistance partial pressure match circuit is connected with detected element, electric resistance partial pressure match circuit comprises fixed partial pressure resistance and the adjustable partial pressure resistance of series connection, and adjustable partial pressure resistance is used for the output voltage of regulating resistance dividing potential drop match circuit; And acquisition chip, the input end of acquisition chip is connected with the output terminal of electric resistance partial pressure match circuit, for gathering the output voltage of electric resistance partial pressure match circuit.
Further, this circuit also comprises: control chip, and the output terminal of control chip is connected with adjustable partial pressure resistance, for regulating the resistance of adjustable partial pressure resistance.
Further, acquisition chip and control chip are microcontroller, and microcontroller is connected to adjustable partial pressure resistance by bus.
Further, adjustable partial pressure resistance is adjustable resistance chip.
Further, this circuit also comprises: voltage follower, between the input end being arranged on detected element and electric resistance partial pressure match circuit, for the signal acquisition circuit of buffer resistance partial pressure type sensor to the interference of detected element place circuit.
Further, voltage follower comprises: operational amplifier, the in-phase input end of operational amplifier is the input end of voltage follower, and the inverting input of operational amplifier is connected to the output terminal of operational amplifier, and the output terminal of operational amplifier is the output terminal of voltage follower.
Further, this circuit also comprises: passive low ventilating filter, is arranged between detected element and the input end of voltage follower, carries out filtering and noise reduction for the simulating signal received the signal acquisition circuit of electric resistance partial pressure type sensor.
Further, passive low ventilating filter comprises: resistance, and the first end of resistance is connected with detected element, and the second end of resistance is connected with the input end of voltage follower; And electric capacity, the first end of electric capacity is connected with the second end of resistance, the second end ground connection of electric capacity.
Further, this circuit also comprises: electrostatic discharge protective circuit, between the input end being arranged on detected element and electric resistance partial pressure match circuit, for providing electrostatic protection for the signal acquisition circuit of electric resistance partial pressure type sensor.
Further, electrostatic discharge protective circuit comprises electrostatic discharge protection electric capacity.
The utility model is by arranging electric resistance partial pressure match circuit, the input end of this electric resistance partial pressure match circuit is connected with detected element, and electric resistance partial pressure match circuit comprises fixed partial pressure resistance and the adjustable partial pressure resistance of series connection, adjustable partial pressure resistance is used for the output voltage of regulating resistance dividing potential drop match circuit, and acquisition chip, the input end of this acquisition chip is connected with the output terminal of electric resistance partial pressure match circuit, for gathering the output voltage of electric resistance partial pressure match circuit, the signal acquisition circuit solving electric resistance partial pressure type sensor in correlation technique cannot the problem of compatible different electric pressure system.By the scope regulating the resistance of adjustable partial pressure resistance to control to gather voltage, and then enable the compatible different electric pressure of the signal acquisition circuit of electric resistance partial pressure type sensor.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the signal acquisition circuit schematic diagram of the electric resistance partial pressure type sensor according to the utility model first embodiment;
Fig. 2 is the signal acquisition circuit schematic diagram of the electric resistance partial pressure type sensor according to the utility model second embodiment; And
Fig. 3 is the signal acquisition circuit schematic diagram of the electric resistance partial pressure type sensor according to the utility model the 3rd embodiment.
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 utility model in detail in conjunction with the embodiments.
The application's scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the embodiment of the application's part, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the application's protection.
It should be noted that, term " first ", " second " etc. in the instructions of the application and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged, in the appropriate case so that the embodiment of the application described herein.In addition, term " comprises " and " having " and their any distortion, and intention is to cover not exclusive comprising.
Embodiment of the present utility model provides a kind of signal acquisition circuit of electric resistance partial pressure type sensor.
Fig. 1 is the signal acquisition circuit schematic diagram of the electric resistance partial pressure type sensor according to the utility model first embodiment.As shown in Figure 1, this circuit comprises: electric resistance partial pressure match circuit 10 and acquisition chip 20.
The input end of electric resistance partial pressure match circuit 10 is connected with detected element, and electric resistance partial pressure match circuit 10 comprises fixed partial pressure resistance and the adjustable partial pressure resistance of series connection, and adjustable partial pressure resistance is used for the output voltage of regulating resistance dividing potential drop match circuit 10.The input end of acquisition chip 20 is connected with the output terminal of electric resistance partial pressure match circuit 10, for gathering the output voltage of electric resistance partial pressure match circuit 10.The resistance of fixed partial pressure resistance is fixing, the resistance of adjustable partial pressure resistance is adjustable, by series connection fixed partial pressure resistance and adjustable partial pressure resistance dividing potential drop is carried out to the input voltage of electric resistance partial pressure match circuit 10, input voltage is the terminal voltage at detected element two ends, voltage to be measured, because voltage to be measured may exceed the voltage acquisition scope of acquisition chip 20, by two resistance of series connection, dividing potential drop is carried out to voltage to be measured and can adjust each ohmically magnitude of voltage.Such as, be the terminal voltage of certain detected element in the automobile electronic system of 24V in electric grade be 18V, by fixed partial pressure resistance and the adjustable partial pressure resistant series regulated at 2K Ω of a 10K Ω, the voltage that fixed partial pressure resistance is got is 5/6 of input voltage, i.e. 15V, the voltage that adjustable partial pressure resistance is got is 1/6 of input voltage, i.e. 3V; And by adjustable partial pressure resistance adjustment after 5K Ω, the voltage that fixed partial pressure resistance is got can be made to be 2/3 of input voltage, i.e. 12V, the voltage that adjustable partial pressure resistance is got is 1/3 of input voltage, i.e. 6V.By regulating the resistance of adjustable partial pressure resistance, the ratio two resistance being got voltage can be regulated, to reach the object of the output voltage of regulating resistance dividing potential drop match circuit 10.Acquisition chip 20 can be connected in parallel on fixed partial pressure resistance, now the output voltage of electric resistance partial pressure match circuit 10 is the ohmically voltage of fixed partial pressure, also can be connected in parallel on adjustable partial pressure resistance, now the output voltage of electric resistance partial pressure match circuit 10 is the ohmically voltage of adjustable partial pressure.Alternatively, fixed partial pressure resistance can be the equivalent resistance that the resistance fixed by multiple resistance carries out after series, parallel or series and parallel, adjustable partial pressure resistance can be the equivalent resistance that the resistance fixed by one or more adjustable partial pressure resistance and one or more resistance carries out after series, parallel or series and parallel, the present embodiment does not limit the concrete connected mode of fixed partial pressure resistance and adjustable partial pressure resistance, only needs the dividing ratios realizing portions of resistance adjustable.Acquisition chip 20 can be modulus (AD) conversion chip, for the voltage analog signal collected is converted to voltage digital signal, also can be other chip with AD acquisition function.
Preferably, this circuit can also comprise: control chip, and the output terminal of control chip is connected with adjustable partial pressure resistance, for regulating the resistance of adjustable partial pressure resistance.The resistance of adjustable partial pressure resistance can be controlled by control chip, the determination mode of control chip to the resistance of adjustable partial pressure resistance can be by receiving input operation, or calculate according to the feedback of voltage on adjustable partial pressure resistance, automatic calculation makes the output voltage of electric resistance partial pressure match circuit 10 meet the resistance of the voltage acquisition scope of acquisition chip 20.Adjustable partial pressure resistance can be the equivalent resistance being undertaken after series, parallel or series and parallel by multiple resistance, the circuit structure of adjustable partial pressure resistance can comprise multiple selector switch, for selecting different equivalent resistances, control chip can by the equivalent resistance regulating the gear residing for selector switch to control adjustable partial pressure resistance.Preferably, acquisition chip 20 and control chip all can be realized by microcontroller, and microcontroller is connected to adjustable partial pressure resistance by bus.Adopt the microcontroller with AD acquisition function the simulating signal of the output voltage of electric resistance partial pressure match circuit 10 can be converted to digital signal, and can control as the resistance of feedback signal to adjustable partial pressure resistance according to this output voltage, such as, when exceeding output voltage predetermined threshold value, regulate the resistance of adjustable partial pressure resistance, output voltage is remained in the AD acquisition range of microcontroller.Preferably, adjustable partial pressure resistance is adjustable resistance chip.Adjustable resistance chip can pass through the control that Serial Peripheral Interface (SPI) (SPI) bus receives microcontroller, can regulate resistance by software mode amendment microcontroller.
Preferably, this circuit can also comprise: voltage follower, between the input end being arranged on detected element and electric resistance partial pressure match circuit 10, for the signal acquisition circuit of buffer resistance partial pressure type sensor to the interference of detected element place circuit.Voltage follower can improve input impedance, reduces output impedance, prevents from causing interference and the collection value distortion that causes to detected element place circuit, other Acquisition Circuit also can be prevented simultaneously to be connected in parallel to this detected element and carry out gathering the interference brought.Preferably, voltage follower comprises: operational amplifier, the in-phase input end of operational amplifier is the input end of voltage follower, and the inverting input of operational amplifier is connected to the output terminal of operational amplifier, and the output terminal of operational amplifier is the output terminal of voltage follower.
Preferably, this circuit also comprises: passive low ventilating filter, be arranged between detected element and the input end of voltage follower, carry out filtering and noise reduction for the simulating signal received the signal acquisition circuit of electric resistance partial pressure type sensor, form active low-pass filter with voltage follower.The burr that low-pass filter can remove simulating signal or the larger voltage fluctuation produced because of interference, catastrophic failure etc.Preferably, this passive low ventilating filter comprises: resistance, and the first end of resistance is connected with detected element, and the second end of resistance is connected with the input end of voltage follower; And electric capacity, the first end of electric capacity is connected with the second end of resistance, the second end ground connection of electric capacity.
Preferably, this circuit also comprises: electrostatic discharge protective circuit, between the input end being arranged on detected element and electric resistance partial pressure match circuit 10, for providing electrostatic protection for the signal acquisition circuit of electric resistance partial pressure type sensor.Electrostatic discharge protective circuit as the external interface part of the signal acquisition circuit of electric resistance partial pressure type sensor, can provide electrostatic protection to integrated circuit.Preferably, electrostatic discharge protective circuit comprises Electro-static Driven Comb (ESD) and protects electric capacity.
The signal acquisition circuit of the electric resistance partial pressure type sensor that this embodiment provides, by electric resistance partial pressure match circuit 10, the input end of electric resistance partial pressure match circuit 10 is connected with detected element, electric resistance partial pressure match circuit 10 comprises fixed partial pressure resistance and the adjustable partial pressure resistance of series connection, and adjustable partial pressure resistance is used for the output voltage of regulating resistance dividing potential drop match circuit 10; And acquisition chip 20, the input end of acquisition chip 20 is connected with the output terminal of electric resistance partial pressure match circuit 10, for gathering the output voltage of electric resistance partial pressure match circuit 10, the signal acquisition circuit solving electric resistance partial pressure type sensor in correlation technique cannot the problem of compatible different electric pressure system.By the scope regulating the resistance of adjustable partial pressure resistance to control to gather voltage, and then enable the compatible different electric pressure of the signal acquisition circuit of electric resistance partial pressure type sensor.
Fig. 2 is the signal acquisition circuit schematic diagram of the electric resistance partial pressure type sensor according to the utility model second embodiment.This embodiment can as the preferred implementation of above-mentioned first embodiment, and as shown in Figure 2, this circuit comprises: electric resistance partial pressure match circuit 10 and MCU30.
The input end of electric resistance partial pressure match circuit 10 is connected with measured resistance R0, electric resistance partial pressure match circuit 10 comprises resistance R1 and the adjustable resistance R2 of the fixed resistance value of series connection, the first end of resistance R1 is as the input end of electric resistance partial pressure match circuit 10, adjustable resistance R2 first end is connected with resistance R1 second end, adjustable resistance R2 second end ground connection, acquisition chip can pass through microcontroller (MCU) 30 and realize, the AD of acquisition chip gathers pin and is connected to adjustable resistance R2 two ends, measures the dividing potential drop of adjustable resistance R2.
Fig. 3 is the signal acquisition circuit schematic diagram of the electric resistance partial pressure type sensor according to the utility model the 3rd embodiment.This embodiment can as the preferred implementation of above-mentioned first embodiment, and as shown in Figure 3, this circuit comprises: electric resistance partial pressure match circuit 10, MCU30, voltage follower 40, low-pass filter 50 and electrostatic discharge protective circuit 60.
Electrostatic discharge protective circuit 60 is as the external interface of the signal acquisition circuit of the electric resistance partial pressure type sensor of the present embodiment; be connected to measured resistance R0; for the signal acquisition circuit of electric resistance partial pressure type sensor provides electrostatic defending, electrostatic discharge protective circuit 60 comprises an esd protection electric capacity C1.The input end of low-pass filter 50 is connected with the output terminal of electrostatic discharge protective circuit 60; low-pass filter 50 comprises an a resistance R3 and electric capacity C2; the first end of resistance R3 is as the input end of low-pass filter 50; second end of resistance R3 is connected to the first end of electric capacity C2; the second end ground connection of electric capacity C2, low-pass filter 50 is for eliminating the burr of simulating signal or the larger voltage fluctuation because of interference, the generation of catastrophic failure lamp.The input end of voltage follower 40 is connected with the output terminal of low-pass filter 50, voltage follower 40 comprises an operational amplifier A, the in-phase input end "+" of operational amplifier A is as the input end of voltage follower 40, the inverting input "-" of operational amplifier A is connected with the output terminal of operational amplifier A, and the output terminal of operational amplifier A is as the output terminal of voltage follower 40.Voltage follower 40 can improve input impedance, reduces output impedance, and forms active low-pass filter with low-pass filter 50.Voltage follower 40 can eliminate that the signal acquisition circuit of electric resistance partial pressure type sensor is in parallel with measured resistance R0 makes the resistance distortion of measured resistance R0 and the interference produced.Voltage follower 40 can improve the compatibility of the signal acquisition circuit of electric resistance partial pressure type sensor, disturbs when preventing different testing circuits from gathering this same signal simultaneously.The input end of electric resistance partial pressure match circuit 10 is connected with the output terminal of voltage follower 40, electric resistance partial pressure match circuit 10 comprises a resistance R1 and adjustable resistance R2 of a fixed resistance value, the first end of resistance R1 is as the input end of electric resistance partial pressure match circuit 10, the first end of adjustable resistance R2 is connected with second end of resistance R1, as the output terminal of electric resistance partial pressure match circuit 10, the second end ground connection of adjustable resistance R2.Electric resistance partial pressure match circuit 10 can carry out dividing potential drop by regulating the resistance of adjustable resistance 20 to collection voltage, realizes the compatibility of the signal to the electric grade of difference.The function of acquisition chip and control chip is performed by MCU30, and MCU30 can complete AD acquisition function, and can be regulated by the resistance of spi bus to adjustable resistance R2.Resistance R1 and adjustable resistance R2 can carry out dividing potential drop to the voltage gathered, adjustable resistance R2 is an adjustable resistance chip, MCU30 is communicated with adjustable resistance R2 by spi bus, controls the resistance of adjustable resistance R2, with the AD acquisition range making the dividing potential drop on adjustable resistance R2 meet MCU30.The resistance of adjustable resistance R2 can be regulated with the AD acquisition range making the dividing potential drop on adjustable resistance R2 meet MCU according to the electric pressure estimation of measured resistance R0 place system, or, also can be whether the dividing potential drop judged on adjustable resistance R2 by the AD collection result of MCU30 exceedes predetermined voltage threshold, this predetermined voltage threshold can be set within the AD acquisition range of MCU30, when the AD collection result of MCU30 exceeds predetermined voltage threshold, MCU30 regulates the resistance of adjustable resistance R2 by the total heart of SPI, with the AD acquisition range preventing the dividing potential drop on adjustable resistance R2 from exceeding MCU30.
The signal acquisition circuit of the electric resistance partial pressure type sensor that this embodiment provides, the resistance of adjustable resistance R2 is regulated to control to gather the scope of voltage by MCU30, the signal acquisition circuit solving electric resistance partial pressure type sensor in correlation technique cannot the problem of compatible different electric pressure system, and then enables the compatible different electric pressure of the signal acquisition circuit of electric resistance partial pressure type sensor.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a signal acquisition circuit for electric resistance partial pressure type sensor, is characterized in that, comprising:
Electric resistance partial pressure match circuit, the input end of described electric resistance partial pressure match circuit is connected with detected element, described electric resistance partial pressure match circuit comprises fixed partial pressure resistance and the adjustable partial pressure resistance of series connection, and described adjustable partial pressure resistance is for regulating the output voltage of described electric resistance partial pressure match circuit; And
Acquisition chip, the input end of described acquisition chip is connected with the output terminal of described electric resistance partial pressure match circuit, for gathering the output voltage of described electric resistance partial pressure match circuit.
2. circuit according to claim 1, is characterized in that, described circuit also comprises:
Control chip, the output terminal of described control chip is connected with described adjustable partial pressure resistance, for regulating the resistance of described adjustable partial pressure resistance.
3. circuit according to claim 2, is characterized in that, described acquisition chip and described control chip are microcontroller, and described microcontroller is connected to adjustable partial pressure resistance by bus.
4. circuit according to claim 3, is characterized in that, described adjustable partial pressure resistance is adjustable resistance chip.
5. circuit according to claim 1, is characterized in that, described circuit also comprises:
Voltage follower, between the input end being arranged on described detected element and described electric resistance partial pressure match circuit, for cushioning the signal acquisition circuit of described electric resistance partial pressure type sensor to the interference of described detected element place circuit.
6. circuit according to claim 5, is characterized in that, described voltage follower comprises:
Operational amplifier, the in-phase input end of described operational amplifier is the input end of described voltage follower, the inverting input of described operational amplifier is connected to the output terminal of described operational amplifier, and the output terminal of described operational amplifier is the output terminal of described voltage follower.
7. circuit according to claim 5, is characterized in that, described circuit also comprises:
Passive low ventilating filter, between the input end being arranged on described detected element and described voltage follower, carries out filtering and noise reduction for the simulating signal received the signal acquisition circuit of described electric resistance partial pressure type sensor.
8. circuit according to claim 7, is characterized in that, described passive low ventilating filter comprises:
Resistance, the first end of described resistance is connected with described detected element, and the second end of described resistance is connected with the input end of described voltage follower; And
Electric capacity, the first end of described electric capacity is connected with the second end of described resistance, the second end ground connection of described electric capacity.
9. circuit according to claim 1, is characterized in that, described circuit also comprises:
Electrostatic discharge protective circuit, between the input end being arranged on described detected element and described electric resistance partial pressure match circuit, for providing electrostatic protection for the signal acquisition circuit of described electric resistance partial pressure type sensor.
10. circuit according to claim 9, is characterized in that, described electrostatic discharge protective circuit comprises electrostatic discharge protection electric capacity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520908302.9U CN205120807U (en) | 2015-11-13 | 2015-11-13 | Signal acquisition circuit of resistive voltage divider formula sensor |
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| CN201520908302.9U CN205120807U (en) | 2015-11-13 | 2015-11-13 | Signal acquisition circuit of resistive voltage divider formula sensor |
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| CN205120807U true CN205120807U (en) | 2016-03-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997008A (en) * | 2016-06-25 | 2016-10-12 | 深圳市贝沃德克生物技术研究院有限公司 | Adaptive adjustment system and method for signals of biosensors |
| WO2017219542A1 (en) * | 2016-06-25 | 2017-12-28 | 深圳市贝沃德克生物技术研究院有限公司 | Signal adaptive adjusting device of biosensor |
| CN107659311A (en) * | 2017-09-27 | 2018-02-02 | 航天科技控股集团股份有限公司 | A kind of vehicle-mounted AD Acquisition Circuit of wide scope |
| CN109682268A (en) * | 2019-03-15 | 2019-04-26 | 江南机电设计研究所 | A kind of micro missile test device |
| CN110132444A (en) * | 2018-02-08 | 2019-08-16 | 展讯通信（上海）有限公司 | Temperature sensing circuit |
| CN113376538A (en) * | 2021-05-18 | 2021-09-10 | 杭州迪为科技有限公司 | Battery pack Y-capacitor testing method and system |
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2015
- 2015-11-13 CN CN201520908302.9U patent/CN205120807U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997008A (en) * | 2016-06-25 | 2016-10-12 | 深圳市贝沃德克生物技术研究院有限公司 | Adaptive adjustment system and method for signals of biosensors |
| WO2017219544A1 (en) * | 2016-06-25 | 2017-12-28 | 深圳市贝沃德克生物技术研究院有限公司 | Signal adaptive adjustment system and method of biosensors |
| WO2017219542A1 (en) * | 2016-06-25 | 2017-12-28 | 深圳市贝沃德克生物技术研究院有限公司 | Signal adaptive adjusting device of biosensor |
| CN107659311A (en) * | 2017-09-27 | 2018-02-02 | 航天科技控股集团股份有限公司 | A kind of vehicle-mounted AD Acquisition Circuit of wide scope |
| CN110132444A (en) * | 2018-02-08 | 2019-08-16 | 展讯通信（上海）有限公司 | Temperature sensing circuit |
| CN110132444B (en) * | 2018-02-08 | 2021-10-26 | 展讯通信（上海）有限公司 | Temperature detection circuit |
| CN109682268A (en) * | 2019-03-15 | 2019-04-26 | 江南机电设计研究所 | A kind of micro missile test device |
| CN109682268B (en) * | 2019-03-15 | 2021-04-06 | 江南机电设计研究所 | Miniature guided missile testing arrangement |
| CN113376538A (en) * | 2021-05-18 | 2021-09-10 | 杭州迪为科技有限公司 | Battery pack Y-capacitor testing method and system |
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