CN218956684U - Initiating explosive device insulation resistance detection circuit - Google Patents
Initiating explosive device insulation resistance detection circuit Download PDFInfo
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- CN218956684U CN218956684U CN202223234248.3U CN202223234248U CN218956684U CN 218956684 U CN218956684 U CN 218956684U CN 202223234248 U CN202223234248 U CN 202223234248U CN 218956684 U CN218956684 U CN 218956684U
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Abstract
The utility model discloses an initiating explosive device insulation resistance detection circuit which comprises a boosting module, a voltage selection module, a voltage amplification and sampling detection module, a parallel resistance switching module and a microprocessor module, wherein the microprocessor module is respectively connected with the boosting module, the voltage amplification and sampling detection module and the parallel resistance switching module, is used for switching in the voltage selection circuit and the parallel resistance circuit and transmitting sampling data of the sampling circuit to the microprocessor module. The processor controls the boosting module and the parallel resistance switching module to change the output voltage and the amplification times of the voltage amplification and sampling detection module, so that high-precision wide-range data voltage acquisition is realized, and the circuit has strong anti-interference capability, wide resistance value measurement range, high measurement precision and high reliability.
Description
Technical Field
The utility model relates to the technical field of initiating explosive device measurement, in particular to an initiating explosive device insulation resistance detection circuit.
Background
The test of the insulation resistance of the initiating explosive device is an important test content of a weapon system, and whether the resistance value is normal or not is directly related to whether the weapon can normally act or not. The initiating explosive device belongs to dangerous products, has strict requirements on working current of the initiating explosive device, cannot be too large or too small, and is the most important test item for confirming the correctness of design parameters of the initiating explosive device, so that the accuracy and the safety of the initiating explosive device are ensured during the test. At present, a manual test scheme is used, so that the test operation is troublesome, the workload is large, the risk is high, the error is prone to occur, the test accuracy is low, and the accuracy of the test resistance is difficult to ensure. Based on the circuit, a control acquisition circuit is designed, and the circuit consists of a microprocessor, a relay, a boosting module and an operational amplifier.
Disclosure of Invention
The utility model aims to provide an initiating explosive device insulation resistance detection circuit which can automatically detect insulation resistances under different voltages.
The utility model aims at realizing the technical means that the initiating explosive device insulation resistance detection circuit comprises
The boosting module comprises a plurality of boosting circuits, wherein the input end of each boosting circuit is connected with an external power supply and is used for converting the voltage of the external power supply into test voltage output with different magnitudes;
the voltage selection module comprises voltage selection circuits which are matched with the number of the voltage boosting circuits, and the input end of each voltage selection circuit is connected with the output end of one voltage boosting circuit;
the voltage amplifying and sampling detection module comprises a voltage amplifying circuit and a sampling circuit, wherein the voltage input end of the voltage amplifying circuit is connected with the output end of the voltage selecting module, the initiating explosive device to be detected is connected to the voltage amplifying circuit, the sampling circuit is connected with the voltage amplifying circuit,
the parallel resistance switching module comprises a plurality of parallel resistance circuits, wherein the output ends of the parallel resistance circuits are connected with the voltage amplifying circuit and used for switching in the parallel resistance circuits in the voltage amplifying circuit so as to change the amplification factor of the voltage amplifying circuit;
the microprocessor module is respectively connected with the boosting module, the voltage amplifying and sampling detection module and the parallel resistance switching module, and is used for switching the connected voltage selection circuit and parallel resistance circuit and transmitting the sampling data of the sampling circuit to the microprocessor module.
The voltage selection circuit comprises a relay K1 and a triode Q1 which are connected, one end of the triode Q1 is connected with the microprocessor module, and the output end of the relay K1 is connected with the input end of the voltage amplification and sampling detection module.
And the base electrode of the triode Q1 is connected with the microprocessor module, and the collector electrode is connected with the relay K1.
The parallel resistance circuit of the parallel resistance switching module comprises a relay K4 and a triode Q4 which are connected, one end of the triode Q4 is connected with the microprocessor module, and the relay K4 is connected with the voltage amplifying and sampling detection module.
The voltage amplifying circuit comprises a resistor R8 and a resistor R9 which are connected in series, a to-be-detected initiating explosive device resistor Rx and a resistor R10 which are connected in series, the resistor R8 and the resistor R9 are integrally connected in parallel with the to-be-detected initiating explosive device resistor Rx and the resistor R10, one ends of the resistor R8 and the to-be-detected initiating explosive device resistor Rx are connected with the output end of the voltage selecting module, and the output end of the parallel resistor switching module is respectively connected with the other end of the resistor R8 and the positive end of the resistor R9;
the sampling circuit comprises a voltage sampling circuit IC4 and a voltage sampling circuit IC5, wherein the voltage sampling circuit IC4 is used for sampling the resistor R9, and the voltage sampling circuit IC5 is used for sampling the resistor R10.
And the base electrode of the triode Q4 is connected with the microprocessor module, and the collector electrode is connected with the relay K4.
And two output ends of the relay K4 are respectively connected with a resistor R4 and a resistor R5, and the other ends of the resistor R4 and the resistor R5 are connected to a voltage amplifying and sampling detection module.
The utility model has the beneficial effects that:
1. the processor controls the boosting module and the parallel resistance switching module to change the output voltage and the amplification times of the voltage amplification and sampling detection module, so that high-precision wide-range data voltage acquisition is realized, and the circuit has strong anti-interference capability, wide resistance value measurement range, high measurement precision and high reliability.
2. The insulation resistance detection device has the advantages that insulation resistance detection under different voltages is realized through automatic switching of the microprocessor module, the operation is simple, the workload is large, the risk is small, the error is not easy to occur, and the test accuracy is high.
3. The voltage data is acquired through the voltage amplification and sampling detection module, so that the insulation resistance is automatically calculated by the microprocessor module.
Drawings
FIG. 1 is a schematic diagram of the present utility model;
FIG. 2 is a circuit diagram of a boost module;
FIG. 3 is a circuit diagram of a voltage selection module;
FIG. 4 is a circuit diagram of a parallel resistance switching module;
FIG. 5 is a circuit diagram of a voltage amplification and sampling detection module;
in fig. 1, a microprocessor module; 2. a boost module; 3. a voltage selection module; 4. a parallel resistance switching module; 5. and the voltage amplifying and sampling detection module.
The present utility model will be described in further detail with reference to the accompanying drawings and examples.
Detailed Description
[ example 1 ]
As shown in FIG. 1, an initiating explosive device insulation resistance detection circuit comprises
The boosting module 2 comprises a plurality of boosting circuits, wherein the input end of each boosting circuit is connected with an external power supply and is used for converting the voltage of the external power supply into test voltage output with different magnitudes;
the voltage selection module 3 comprises voltage selection circuits matched with the number of the voltage boosting circuits, and the input end of each voltage selection circuit is connected with the output end of one voltage boosting circuit;
the voltage amplifying and sampling detection module 5 comprises a voltage amplifying circuit and a sampling circuit, wherein the voltage input end of the voltage amplifying circuit is connected with the output end of the voltage selecting module 3, the initiating explosive device to be detected is connected to the voltage amplifying circuit, the sampling circuit is connected with the voltage amplifying circuit,
the parallel resistance switching module 4 comprises a plurality of parallel resistance circuits, and the output ends of the parallel resistance circuits are connected with the voltage amplifying circuit and used for switching in the parallel resistance circuits in the voltage amplifying circuit so as to change the amplification factor of the voltage amplifying circuit;
the microprocessor module 1, the microprocessor module 1 is respectively connected with the boost module 2, the voltage amplifying and sampling detection module 5 and the parallel resistance switching module 4, and is used for switching the connected voltage selection circuit and parallel resistance circuit and transmitting the sampling data of the sampling circuit to the microprocessor module 1. The microprocessor module 1 is a single chip microcomputer, an FPGA or a DSP.
The voltage boosting module 2 converts an external input voltage into a plurality of voltages with different magnitudes through a plurality of voltage boosting circuits and outputs the voltages to the voltage selecting module 3.
The voltage selection circuit of the voltage selection module 3 is connected with the boost circuit module and corresponds to the boost circuit module one by one, the output ends of all the voltage selection circuits are connected to the amplifying circuit of the voltage amplifying and sampling detection module 5 to provide voltage, the voltage selection circuit is also connected with the I/O output port of the microprocessor module 1, which voltage selection circuit is selected to be conducted through the microprocessor module 1 to provide voltage for the amplifying circuit, and the rest voltage selection circuits are equivalent to open circuits and cannot influence the amplifying circuit.
The parallel resistance switching module 4 is similar, and a plurality of parallel resistance circuits are connected with the amplifying circuit of the voltage amplifying and sampling detection module 5, and the amplification factor is changed by changing the resistance value. Which parallel resistor circuit is connected to the voltage amplifying and sampling detection module 5 is selected by the microprocessor module 1.
The voltage amplification and sampling detection module 5 is connected with the initiating explosive device, the voltage amplification and sampling detection module is used for measuring through the amplification circuit, the sampling circuit is used for collecting and sending data of the amplification circuit to the microprocessor module 1, and the insulation resistance value of the initiating explosive device is obtained through calculation of the microprocessor module 1.
The voltage selection circuit comprises a relay K1 and a triode Q1 which are connected, one end of the triode Q1 is connected with the microprocessor module 1, and the output end of the relay K1 is connected with the input end of the voltage amplification and sampling detection module 5.
The base electrode of the triode Q1 is connected with the microprocessor module 1, and the collector electrode is connected with the relay K1.
The parallel resistance circuit of the parallel resistance switching module 4 comprises a relay K4 and a triode Q4 which are connected, one end of the triode Q4 is connected with the microprocessor module 1, and the relay K4 is connected with the voltage amplifying and sampling detection module 5.
The voltage amplifying circuit comprises a resistor R8 and a resistor R9 which are connected in series, a to-be-detected initiating explosive device resistor Rx and a resistor R10 which are connected in series, the resistor R8 and the resistor R9 are integrally connected in parallel with the to-be-detected initiating explosive device resistor Rx and the resistor R10, one end of the resistor R8 and one end of the to-be-detected initiating explosive device resistor Rx are connected with the output end of the voltage selecting module 3, and the output end of the parallel resistor switching module 4 is respectively connected with the other end of the resistor R8 and the positive end of the resistor R9;
the sampling circuit comprises a voltage sampling circuit IC4 and a voltage sampling circuit IC5, wherein the voltage sampling circuit IC4 is used for sampling the resistor R9, and the voltage sampling circuit IC5 is used for sampling the resistor R10.
The base electrode of the triode Q4 is connected with the microprocessor module 1, and the collector electrode is connected with the relay K4.
And two output ends of the relay K4 are respectively connected with a resistor R4 and a resistor R5, and the other ends of the resistor R4 and the resistor R5 are connected to a voltage amplifying and sampling detection module 5.
As shown in fig. 2, the booster circuit 2 includes: the switch S1, the booster circuit IC1, the capacitor C1, the booster circuit IC2, the capacitor C2, the booster circuit IC3, and the capacitor C3, and the booster circuits IC1, IC2, and IC3 of the booster circuit 2 convert the input voltage into the required test voltages 100V, 250V, and 500V.
As shown in fig. 3, the voltage selection circuits have three groups, which are labeled differently for convenience, and include: triode Q1, relay K1, resistance R1, triode Q2, relay K2, resistance R2, triode Q3, relay K3, resistance R3, the input of triode is connected with microprocessor 1's I/O mouth, and the input voltage of relay is connected with boost circuit's output, and the output of relay is connected with voltage amplification and sampling detection circuit 5, and microprocessor switches on through I/O mouth control triode, provides different test voltage with sampling detection module 5 for voltage amplification.
The base electrode of triode Q1 is connected with microprocessor module 1, collector electrode is connected with relay K1, output end of relay K1 is connected with input end of voltage amplification and sampling detection module 5
As shown in fig. 4, the parallel resistance switching module 4 includes two sets of parallel resistance circuits, specifically including: the input of the parallel resistance switching circuit 4 is connected with the microprocessor 1, the parallel resistance switching circuit 4 is connected with the voltage amplifying and sampling detection circuit 5, and the microprocessor selects which parallel resistance circuit is conducted through a relay I/O port, so that the voltage amplifying and sampling detection circuit 5 is connected, and the resistance is switched into different voltage dividing resistances.
As shown in fig. 5, one end of the resistor R5 is connected to the negative end of the resistor R8, namely, the point Ur in fig. 4 and 5, and one end Ux2 of the resistor R4 is connected to Ux2 of the positive end of the resistor R10, so that the parallel resistor circuit is connected to the amplifying circuit.
As shown in fig. 5, the amplifying circuit and the sampling circuit specifically include a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a magnetic bead L1, and a relay K6.Rx is the resistance of the insulation when it is attached.
In the figure, HV is the voltage provided by the voltage selection module 3, since the resistance values of the resistors R9 and R8 are known, the voltage on R8 can be obtained by measuring the resistance on R9 by the voltage sampling circuit IC4, and the sum of the voltages of R8 and R9 is the actual voltage.
Since the whole of the initiating explosive device and R10 is connected in parallel with the whole of R8 and R9, the voltage of the whole of the initiating explosive device and R10 is also known. The voltage sampling circuit IC5 is used for measuring the voltage on R10, obtaining the current according to the resistance value of R10, further obtaining the partial pressure on Rx, obtaining the resistance value of Rx according to the current and the partial pressure, and obtaining the insulation resistance value of the initiating explosive device.
The use method of the initiating explosive device insulation resistance detection circuit comprises the following steps:
the fire workpiece to be tested is connected, the fire workpiece to be tested is connected to the position of the fire workpiece resistor Rx to be tested in the voltage amplifying and sampling detection module 5,
the microprocessor module 1 controls the triode Q1 of one path of booster circuit in the voltage selection module 3 to be conducted, and the current booster circuit is communicated with the voltage amplification and sampling detection module 5 to provide voltage for the voltage amplification and sampling detection module 5;
the amplification resistor is selected, the microprocessor module 1 controls the triode Q4 of one path of parallel resistor circuit in the parallel resistor switching module 4 to be conducted, the current parallel resistor circuit is connected into the voltage amplification circuit of the voltage amplification and sampling detection module 5, and the amplification factor is changed;
and the voltage sampling circuit IC4 and the voltage sampling circuit IC5 measure the voltage of the resistor R9 and the resistor R10 and feed data back to the microprocessor module 1, and the initiating explosive device insulation resistance is obtained through the resistance value and the voltage of the resistor R9 and the voltage and the resistance value of the resistor R10.
When in use, an initiating explosive device is connected into the circuit through the microprocessor module 1, a voltage selection circuit (namely, a voltage HV provided for an amplifying circuit is selected) and a parallel resistor circuit (namely, the amplification factor of the amplifying circuit is selected) which are connected into the initiating explosive device insulation resistance detection circuit are selected, and an insulation resistance value is obtained through the sampling circuit.
When the voltage and the amplification factor need to be changed, the microprocessor module 1 is only required to conduct other voltage selection circuits and the parallel resistor circuit.
Claims (7)
1. An initiating explosive device insulation resistance detection circuit is characterized in that: comprising
The boosting module (2) comprises a plurality of boosting circuits, wherein the input end of each boosting circuit is connected with an external power supply and is used for converting the voltage of the external power supply into test voltage output with different magnitudes;
the voltage selection module (3) comprises voltage selection circuits matched with the number of the voltage boosting circuits, and the input end of each voltage selection circuit is connected with the output end of one voltage boosting circuit;
the voltage amplifying and sampling detection module (5) comprises a voltage amplifying circuit and a sampling circuit, wherein the voltage input end of the voltage amplifying circuit is connected with the output end of the voltage selecting module (3), the initiating explosive device to be detected is connected to the voltage amplifying circuit, the sampling circuit is connected with the voltage amplifying circuit,
the parallel resistance switching module (4) comprises a plurality of parallel resistance circuits, and the output ends of the parallel resistance circuits are connected with the voltage amplifying circuit and used for switching in the parallel resistance circuits in the voltage amplifying circuit so as to change the amplification factor of the voltage amplifying circuit;
the microprocessor module (1), the microprocessor module (1) is connected with the boost module (2), the voltage amplifying and sampling detection module (5) and the parallel resistance switching module (4) respectively, and is used for switching the connected voltage selection circuit and parallel resistance circuit and transmitting the sampling data of the sampling circuit to the microprocessor module (1).
2. The initiating explosive device insulation resistance detection circuit according to claim 1, wherein: the voltage selection circuit comprises a relay K1 and a triode Q1 which are connected, one end of the triode Q1 is connected with the microprocessor module (1), and the output end of the relay K1 is connected with the input end of the voltage amplification and sampling detection module (5).
3. The initiating explosive device insulation resistance detection circuit according to claim 2, wherein: the base electrode of the triode Q1 is connected with the microprocessor module (1), and the collector electrode is connected with the relay K1.
4. The initiating explosive device insulation resistance detection circuit according to claim 1, wherein: the parallel resistance circuit of the parallel resistance switching module (4) comprises a relay K4 and a triode Q4 which are connected, one end of the triode Q4 is connected with the microprocessor module (1), and the relay K4 is connected with the voltage amplifying and sampling detection module (5).
5. The initiating explosive device insulation resistance detection circuit according to claim 1, wherein: the voltage amplifying circuit comprises a resistor R8 and a resistor R9 which are connected in series, a to-be-detected initiating explosive device resistor Rx and a resistor R10 which are connected in series, the resistor R8 and the resistor R9 are integrally connected in parallel with the to-be-detected initiating explosive device resistor Rx and the resistor R10, one ends of the resistor R8 and the to-be-detected initiating explosive device resistor Rx are connected with the output end of the voltage selecting module (3), and the output end of the parallel resistor switching module (4) is respectively connected with the other end of the resistor R8 and the positive end of the resistor R9;
the sampling circuit comprises a voltage sampling circuit IC4 and a voltage sampling circuit IC5, wherein the voltage sampling circuit IC4 is used for sampling the resistor R9, and the voltage sampling circuit IC5 is used for sampling the resistor R10.
6. The initiating explosive device insulation resistance detection circuit according to claim 4 wherein: the base electrode of the triode Q4 is connected with the microprocessor module (1), and the collector electrode is connected with the relay K4.
7. The initiating explosive device insulation resistance detection circuit according to claim 4 wherein: and two output ends of the relay K4 are respectively connected with a resistor R4 and a resistor R5, and the other ends of the resistor R4 and the resistor R5 are connected to a voltage amplifying and sampling detection module (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223234248.3U CN218956684U (en) | 2022-12-02 | 2022-12-02 | Initiating explosive device insulation resistance detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223234248.3U CN218956684U (en) | 2022-12-02 | 2022-12-02 | Initiating explosive device insulation resistance detection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN218956684U true CN218956684U (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223234248.3U Active CN218956684U (en) | 2022-12-02 | 2022-12-02 | Initiating explosive device insulation resistance detection circuit |
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| CN (1) | CN218956684U (en) |
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- 2022-12-02 CN CN202223234248.3U patent/CN218956684U/en active Active
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