CN205280826U - Priming sytem resistance measuring circuit - Google Patents
Priming sytem resistance measuring circuit Download PDFInfo
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- CN205280826U CN205280826U CN201520945180.0U CN201520945180U CN205280826U CN 205280826 U CN205280826 U CN 205280826U CN 201520945180 U CN201520945180 U CN 201520945180U CN 205280826 U CN205280826 U CN 205280826U
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Abstract
The utility model relates to a technical field is measured to the priming sytem, concretely relates to priming sytem resistance measuring circuit, and the purpose is overcome current priming sytem resistance measuring technique not enough, provides the measuring circuit that measuring current is little, the security is high to can provide a digitization, long -range solution for subsequent acquisition circuit. Its characterized in that: it includes the enlarged circuit module of constant current source circuit module, security circuit module and operation, constant current source circuit module's output and security circuit module's input are connected, and security circuit module's the output and the one end of priming sytem resistance are connected, and the other end logical product of priming sytem resistance enlargies circuit module's input connection. The utility model has the advantages of the circuit form is simple, have with low costs, the reliability is high, simultaneously, the measuring current of resistance when measuring is little, the security is high carrying on, provides the solution for digitization, remote measurement priming sytem resistance.
Description
Technical field
The utility model relates to priming system field of measuring technique, is specifically related to a kind of priming system resistance metering circuit.
Background technology
Priming system is that gunpowder or explosive are housed, by producing burning or blast after external stimulus, with the gunpowder that ignites, fired charge or the components and parts of the single use doing mechanical work and the general name of device. Comprise igniter cap, the fire in a stove before fuel is added, ignitron, extension part, detonator, detonating primer, safety fuse, primacord fuse and blast switch, blast bolt, starter, cutting rope etc. The priming system resistance that the present invention mentions is a kind of electrical detonator of priming system.
Electrical detonator is widely used in aviation, space industry as a kind of detonating primer, has the features such as resistance is little, security requirement height due to it, and how can measure its resistance safely, reliably, easily is the target that related scientific research personnel constantly make great efforts always.
Electrical detonator changes into heat energy and explosion caused a kind of device by electric energy, is made up of plain detonator and electric igniting assembly, and its resistance is 1.0 �� 0.2 ohm, and safety current is 50mA.
Existing priming system resistance measuring method cannot carry out remote measurement, and existing measuring technology is relatively big at measurement electric current, there is security hidden danger; When measuring electric current and be less, measuring accuracy is lower, cannot meet measurement requirement.
Practical novel content
Technology of the present utility model is dealt with problems and is:
Overcome the deficiency of existing priming system resistance measuring technology, it provides a kind of measure the metering circuit that electric current is little, security is high, it is possible to be that follow-up Acquisition Circuit provides a kind of digitizing, remote solution.
The technical solution of the present invention is:
A kind of priming system resistance metering circuit, comprises constant current source circuit module, security circuit module and operation amplifier circuit module; The output terminal of constant current source circuit module is connected with the input terminus of security circuit module, and the output terminal of security circuit module is connected with one end of priming system resistance, and the other end of priming system resistance is connected with the input terminus of operation amplifier circuit module.
Constant current source circuit module as above comprises adjustable current source U1, resistance R1, resistance R2 and diode V1; The power input of adjustable current source U1 is connected with 5V direct supply; The power output end of adjustable current source U1 is connected with one end with resistance R1 of just holding of diode V1 respectively; The negative terminal of diode V1 is connected with the input terminus of resistance R2 and security circuit module respectively; The adjustable side of adjustable current source U1 connects respectively at the other end of resistance R1 and resistance R2.
Security circuit module as above comprises resistance R3, resistance R4, resistance R5 and resistance R6; Resistance R3 and resistance R4 connects, and resistance R5 and resistance R6 connects, and two series connection branch roads carry out parallel connection.
Operation amplifier circuit module as above comprises operational amplifier N1A, isolation amplifier N2, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5 and electric capacity C6;
One end of resistance R11 is the input terminus of operation amplifier circuit module; Resistance R11 and electric capacity C1 form RC filtering circuit, its export meet operational amplifier N1A input just; Resistance R12, resistance R13 and resistance R14 form close loop negative feedback circuit, and the input terminus of this close loop negative feedback circuit is connected with the output terminal of operational amplifier N1A, and the output terminal of this close loop negative feedback circuit is connected with the input negative terminal of operational amplifier N1A; The power supply end of operational amplifier N1A is connected with+5V and-5V direct supply respectively; The output terminal of operational amplifier N1A also one end with resistance R15 is connected; The other end of resistance R15 is connected with the input terminus of isolation amplifier N2; The input of isolation amplifier N2 is powered just to hold and is connected through the first filtering decoupling circuit with+5V power supply; The input of isolation amplifier N2 negative terminal of powering is connected through the 2nd filtering decoupling circuit with-5V power supply; The output of isolation amplifier N2 is powered just to hold and is connected through the 3rd filtering decoupling circuit with+5V1 power supply; The output of isolation amplifier N2 negative terminal of powering is connected through the 4th filtering decoupling circuit with-5V1 power supply; The output terminal of isolation amplifier N2 after the output filter circuit that resistance R16 and electric capacity C6 form carries out filtering as the output terminal of operation amplifier circuit module.
First filtering decoupling electricity routing capacitance C2 ground connection as above realizes; The 2nd described filtering decoupling electricity routing capacitance C3 ground connection realizes; The 3rd described filtering decoupling electricity routing capacitance C4 ground connection realizes; The 4th described filtering decoupling electricity routing capacitance C5 ground connection realizes.
The present invention's useful effect compared with prior art is:
The present invention comprises constant current source circuit module, security circuit module and operation amplifier circuit module, has circuit form simple, has the advantage that cost is low, reliability is high; Meanwhile, the measurement electric current when carrying out resistance and measure is little, security height, for digitizing, remote measurement priming system resistance provide solution.
Accompanying drawing explanation
Fig. 1 is the functional block diagram that the present invention measures priming system resistance circuit;
Fig. 2 is constant current source circuit figure in circuit of the present invention;
Fig. 3 is security circuit figure in circuit of the present invention;
Fig. 4 is operation amplifier circuit figure in circuit of the present invention.
Embodiment
As shown in Figure 1, a kind of priming system resistance metering circuit, comprises constant current source circuit module, security circuit module and operation amplifier circuit module. The output terminal of constant current source circuit module is connected with the input terminus of security circuit module, and the output terminal of security circuit module is connected with one end of priming system resistance, and the other end of priming system resistance is connected with the input terminus of operation amplifier circuit module.
Constant current source circuit module is for generation of the constant current of 10mA, after the current limliting of security circuit module, enter priming system resistive module, priming system resistance both end voltage is carried out amplifying by operation amplifier circuit module, after filtering and isolation processing for subsequent acquisition circuit collection.
As shown in Figure 2, constant current source circuit module comprises adjustable current source U1, resistance R1, resistance R2 and diode V1. The power input of adjustable current source U1 is connected with 5V direct supply; The power output end of adjustable current source U1 is connected with one end with resistance R1 of just holding of diode V1 respectively; The negative terminal of diode V1 is connected with the input terminus of resistance R2 and security circuit module respectively. The adjustable side of adjustable current source U1 connects respectively at the other end of resistance R1 and resistance R2.
By adjustable current source U1 generation current, adjustable current source U1 generation current is carried out feedback regulation by resistance R1, resistance R2 and diode V1, it is achieved constant current exports. In the present embodiment, the resistance of resistance R1 is 13 ohm, and the resistance of resistance R2 is 130 ohm.
As shown in Figure 3, security circuit module comprises resistance R3, resistance R4, resistance R5 and resistance R6. Resistance R3 and resistance R4 connects, and resistance R5 and resistance R6 connects, and two series connection branch roads carry out parallel connection.
Resistance R3, resistance R4, resistance R5 and resistance R6 play current limliting provide protection, when preventing the outward current of constant current source circuit module excessive, priming system resistance are produced damage. The resistance of resistance R3, resistance R4, resistance R5 and resistance R6 is 100 ohm in the present embodiment.
As shown in Figure 4, operation amplifier circuit module comprises operational amplifier N1A, isolation amplifier N2, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5 and electric capacity C6.
One end of resistance R11 is the input terminus of operation amplifier circuit module. Resistance R11 and electric capacity C1 form RC filtering circuit, its export meet operational amplifier N1A input just. Resistance R12, resistance R13 and resistance R14 form close loop negative feedback circuit, and the input terminus of this close loop negative feedback circuit is connected with the output terminal of operational amplifier N1A, and the output terminal of this close loop negative feedback circuit is connected with the input negative terminal of operational amplifier N1A. The power supply end of operational amplifier N1A is connected with+5V and-5V direct supply respectively. The output terminal of operational amplifier N1A also one end with resistance R15 is connected. The other end of resistance R15 is connected with the input terminus of isolation amplifier N2. The input of isolation amplifier N2 is powered just to hold and is connected through the first filtering decoupling circuit with+5V power supply. The first described filtering decoupling electricity routing capacitance C2 ground connection realizes. The input of isolation amplifier N2 negative terminal of powering is connected through the 2nd filtering decoupling circuit with-5V power supply. The 2nd described filtering decoupling electricity routing capacitance C3 ground connection realizes. The output of isolation amplifier N2 is powered just to hold and is connected through the 3rd filtering decoupling circuit with+5V1 power supply. The 3rd described filtering decoupling electricity routing capacitance C4 ground connection realizes. The output of isolation amplifier N2 negative terminal of powering is connected through the 4th filtering decoupling circuit with-5V1 power supply. The 4th described filtering decoupling electricity routing capacitance C5 ground connection realizes. The output terminal of isolation amplifier N2 after the output filter circuit that resistance R16 and electric capacity C6 form carries out filtering as the output terminal of operation amplifier circuit module.
Input signal carries out carrying out gain amplification by operational amplifier N1A after filtering process through RC filtering circuit, then realizes signal isolation by isolation amplifier N2, exports after carrying out filtering finally by output filter circuit.
Constant current source circuit module is made up of three end adjustable current source U1 and resistance R1, R2, diode V1, and its core devices is three end adjustable current source U1, and it has higher current precision to export, and can provide the power stage of 400mW
Security circuit module is made up of 4 resistance series-parallel connection, and when constant current source circuit breaks down, it can play the effect of current limliting, is possible to prevent again the potential safety hazard that single resistance lost efficacy and brings. .
Operation amplifier circuit module is made up of high precision operating amplifier N1A and isolation amplifier N2 and related resistors electric capacity, priming system resistance both end voltage is amplified 10 times and is exported to isolation amplifier by N1A, voltage isolation and amplifier is given follow-up Acquisition Circuit by isolation amplifier, play the effect of isolation and amplifier, thus ensure the safety of priming system resistance.
Claims (5)
1. a priming system resistance metering circuit, it is characterised in that: it comprises constant current source circuit module, security circuit module and operation amplifier circuit module; The output terminal of constant current source circuit module is connected with the input terminus of security circuit module, and the output terminal of security circuit module is connected with one end of priming system resistance, and the other end of priming system resistance is connected with the input terminus of operation amplifier circuit module.
2. priming system resistance metering circuit according to claim 1, it is characterised in that: described constant current source circuit module comprises adjustable current source U1, resistance R1, resistance R2 and diode V1; The power input of adjustable current source U1 is connected with 5V direct supply; The power output end of adjustable current source U1 is connected with one end with resistance R1 of just holding of diode V1 respectively; The negative terminal of diode V1 is connected with the input terminus of resistance R2 and security circuit module respectively; The adjustable side of adjustable current source U1 connects respectively at the other end of resistance R1 and resistance R2.
3. priming system resistance metering circuit according to claim 1, it is characterised in that: described security circuit module comprises resistance R3, resistance R4, resistance R5 and resistance R6; Resistance R3 and resistance R4 connects, and resistance R5 and resistance R6 connects, and two series connection branch roads carry out parallel connection.
4. priming system resistance metering circuit according to claim 1, it is characterised in that: described operation amplifier circuit module comprises operational amplifier N1A, isolation amplifier N2, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5 and electric capacity C6;
One end of resistance R11 is the input terminus of operation amplifier circuit module; Resistance R11 and electric capacity C1 form RC filtering circuit, its export meet operational amplifier N1A input just; Resistance R12, resistance R13 and resistance R14 form close loop negative feedback circuit, and the input terminus of this close loop negative feedback circuit is connected with the output terminal of operational amplifier N1A, and the output terminal of this close loop negative feedback circuit is connected with the input negative terminal of operational amplifier N1A; The power supply end of operational amplifier N1A is connected with+5V and-5V direct supply respectively; The output terminal of operational amplifier N1A also one end with resistance R15 is connected; The other end of resistance R15 is connected with the input terminus of isolation amplifier N2; The input of isolation amplifier N2 is powered just to hold and is connected through the first filtering decoupling circuit with+5V power supply; The input of isolation amplifier N2 negative terminal of powering is connected through the 2nd filtering decoupling circuit with-5V power supply; The output of isolation amplifier N2 is powered just to hold and is connected through the 3rd filtering decoupling circuit with+5V1 power supply; The output of isolation amplifier N2 negative terminal of powering is connected through the 4th filtering decoupling circuit with-5V1 power supply; The output terminal of isolation amplifier N2 after the output filter circuit that resistance R16 and electric capacity C6 form carries out filtering as the output terminal of operation amplifier circuit module.
5. priming system resistance metering circuit according to claim 4, it is characterised in that: the first described filtering decoupling electricity routing capacitance C2 ground connection realizes; The 2nd described filtering decoupling electricity routing capacitance C3 ground connection realizes; The 3rd described filtering decoupling electricity routing capacitance C4 ground connection realizes; The 4th described filtering decoupling electricity routing capacitance C5 ground connection realizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520945180.0U CN205280826U (en) | 2015-11-24 | 2015-11-24 | Priming sytem resistance measuring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520945180.0U CN205280826U (en) | 2015-11-24 | 2015-11-24 | Priming sytem resistance measuring circuit |
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| CN205280826U true CN205280826U (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520945180.0U Expired - Fee Related CN205280826U (en) | 2015-11-24 | 2015-11-24 | Priming sytem resistance measuring circuit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556743A (en) * | 2016-10-27 | 2017-04-05 | 北京航天长征飞行器研究所 | A kind of priming system resistance measuring circuit of automatic calibration multichannel priming system circuit |
| CN109342819A (en) * | 2018-10-29 | 2019-02-15 | 中国人民解放军火箭军工程大学 | A kind of accurate matching system of small resistance |
| CN109444552A (en) * | 2018-11-28 | 2019-03-08 | 航天新长征大道科技有限公司 | A kind of priming system resistance testing device and priming system method for testing resistance |
| CN109884399A (en) * | 2019-03-11 | 2019-06-14 | 北京星际荣耀空间科技有限公司 | A kind of low voltage experiment circuit and method for priming system loop resistance value |
| CN112327085A (en) * | 2018-06-19 | 2021-02-05 | 上海微小卫星工程中心 | Method for verifying initiating explosive device access |
| CN112986655A (en) * | 2021-02-25 | 2021-06-18 | 航天科工空间工程发展有限公司 | Detection device and method for aircraft initiating explosive device |
| CN113960371A (en) * | 2020-07-21 | 2022-01-21 | 北京机械设备研究所 | Resistance measuring circuit of initiating explosive device ignition return circuit |
-
2015
- 2015-11-24 CN CN201520945180.0U patent/CN205280826U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556743A (en) * | 2016-10-27 | 2017-04-05 | 北京航天长征飞行器研究所 | A kind of priming system resistance measuring circuit of automatic calibration multichannel priming system circuit |
| CN112327085A (en) * | 2018-06-19 | 2021-02-05 | 上海微小卫星工程中心 | Method for verifying initiating explosive device access |
| CN112327085B (en) * | 2018-06-19 | 2023-08-25 | 上海微小卫星工程中心 | Verification method for initiating explosive device passage |
| CN109342819A (en) * | 2018-10-29 | 2019-02-15 | 中国人民解放军火箭军工程大学 | A kind of accurate matching system of small resistance |
| CN109342819B (en) * | 2018-10-29 | 2024-01-26 | 中国人民解放军火箭军工程大学 | Small-resistance accurate matching system |
| CN109444552A (en) * | 2018-11-28 | 2019-03-08 | 航天新长征大道科技有限公司 | A kind of priming system resistance testing device and priming system method for testing resistance |
| CN109884399A (en) * | 2019-03-11 | 2019-06-14 | 北京星际荣耀空间科技有限公司 | A kind of low voltage experiment circuit and method for priming system loop resistance value |
| CN109884399B (en) * | 2019-03-11 | 2021-07-09 | 北京星际荣耀空间科技有限公司 | Low-voltage test circuit and method for loop resistance of initiating explosive device |
| CN113960371A (en) * | 2020-07-21 | 2022-01-21 | 北京机械设备研究所 | Resistance measuring circuit of initiating explosive device ignition return circuit |
| CN113960371B (en) * | 2020-07-21 | 2024-05-28 | 北京机械设备研究所 | Resistance measurement circuit of initiating explosive device ignition circuit |
| CN112986655A (en) * | 2021-02-25 | 2021-06-18 | 航天科工空间工程发展有限公司 | Detection device and method for aircraft initiating explosive device |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20171124 |
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| CF01 | Termination of patent right due to non-payment of annual fee |