Device and method for detecting functions of separation pin, electric detonator and thermal battery

Abstract

The invention discloses a function detection device and method for a separation pin, an electric detonator and a thermal battery, and relates to the technical field of avionics, the function detection device comprises a control panel, and a power supply module, a low-resistance test module and a voltage and current test module which are installed on the control panel, and an externally used 220V power supply is sent to the power supply module through a fuse F1 and a power switch S1; after voltage stabilization and filtering of the power supply module, the voltage is converted into a required 27V linear direct-current power supply and instrument working voltage 24V, the instrument working voltage 5V, the 27V linear direct-current power supply is sent to a control panel through a fuse F2 and a 27V voltage switch S2, and the 27V linear direct-current power supply is connected in parallel with a 27V voltmeter PV0; instrument working voltage 24V is respectively sent to a control panel and a state indicating lamp through fuses F3 and F4, and instrument working voltage 5V is sent to a voltage and current test module and an instrument of the control panel. The device is easy to operate, accurate in measurement, capable of meeting detection requirements, safe and stable in operation and convenient to carry.

Description

Technical Field

[0001] This invention relates to the field of avionics technology, and in particular to a device and method for testing the function of a separating pin, an electric detonator, and a thermal battery. Background Technology

[0002] As is well known, during the operation of aviation equipment, the three components—separator pin, electric detonator, and thermal battery—operate in sequence. A malfunction in any single component can directly lead to the termination of the aviation equipment's operation, severely impacting its usability. During manufacturing, the separator pin, electric detonator, and thermal battery undergo individual testing. Once assembled into an independent servo system module, they are no longer subject to separate functional testing, and their reliability is guaranteed by design. To enable functional testing of the separator pin, electric detonator, and thermal battery in the field, both reliability and safety must be considered. This requires ensuring the accuracy of the working circuit tests while preventing false signal triggering. It necessitates comprehensive consideration of factors such as the safety of pyrotechnic and thermal battery testing, portability, and error prevention.

[0003] The patent number is CN201611139699.5, and the invention title is: A Remote Control and Real-time Detection Circuit for Aircraft Electric Explosive Tubes. The design is a remote control circuit for electric explosive tubes with a complete status detection mechanism. Through high-end and low-end remote dual protection control, it ensures the high safety of the electric explosive tubes and also has a BIT fault detection mechanism. This method is not applicable to the detection of the conduction link of the electric explosive tube in the product after the design is finalized. Similarly, the detection methods for thermal batteries are also independent tests in the manufacturing process and lack the continuity test of the thermal battery working link. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention discloses a device and method for testing the function of a separating pin, an electric explosion tube, and a thermal battery.

[0005] To achieve the aforementioned objective, the present invention employs the following technical solution: A device for testing the function of a separating pin, an electric detonator, and a thermal battery includes a control panel and a power supply module, a low resistance test module, and a voltage and current test module installed on the control panel. An external 220V power supply is fed into the power supply module via fuse F1 and power switch S1. After being regulated and filtered by the power supply module, it is converted into the required 27V linear DC power supply and the instrument operating voltages 24V and 5V. The 27V linear DC power supply is sent to the control panel via fuse F2 and 27V voltage switch S2, and a 27V voltmeter PV0 is connected in parallel. The 24V instrument operating voltage is sent to the control panel's indicator light and status indicator light via fuses F3 and F4, respectively. The 5V instrument operating voltage is sent to the voltage and current test module and the instrument on the control panel. The 27V linear DC power output from the power supply module is sent to the two contacts K1-A and K1-B of the circuit power supply selection K1 after passing through the resistance measurement button KA on the control panel. The five positions of K1-A and K1-B respectively switch the test state between neutral, A group hot battery signal position, B group hot battery signal position, electric detonator signal position and separation pin position.

[0006] The aforementioned device for testing the function of the separating pin, the electric explosion tube, and the thermal battery, and the aforementioned low-resistance testing module use a low-resistance meter (PR) to perform zero-point checks and resistance measurements.

[0007] The aforementioned device for testing the function of the separating pin, the electric detonator, and the thermal battery includes a voltage and current testing module comprising a switch measuring voltmeter PV1 and a switch measuring ammeter PA1. The switch measuring voltmeter PV1 and the switch measuring ammeter PA1 measure the voltage and current of the separating pin in the on state of the microswitches S1, S2, and S3.

[0008] When the power supply selection K1-A of the aforementioned separation pin, electric detonator, and thermal battery function testing device selects the electric detonator signal range, the product working voltage output by the power supply module is sent to the two contacts K3-A and K3-B of the switch measurement selection K3 after passing through the current limiting resistor R1 and the voltage measurement button KB. The four positions of K3-A and K3-B respectively complete the switching of the test states of neutral, micro switch S1 circuit, micro switch S2 circuit, and micro switch S3 circuit, and connect the voltage and current test module to the detection circuit.

[0009] The aforementioned device for testing the function of the separating pin, the electric detonator, and the thermal battery also includes a resistance measurement selection K2 connected to the low resistance test module. The two contacts K2-A and K2-B of the resistance measurement selection K2 allow for the selection of five positions: zero setting of the low resistance meter, one channel of the A group thermal battery, two channels of the A group thermal battery, the B group thermal battery circuit, and the electric detonator circuit.

[0010] A testing method for a disconnect switch, an electric detonator, and a thermal battery function testing device, specifically including the following steps: S1, Hot Battery Function Detection a. Turn on the 220V power switch S1 and the 27V voltage switch S2 in sequence. After checking that the voltmeter PV0 is normal, turn on the low resistance tester PR and set the resistance measurement button KA knob to the "low resistance meter zero position" position to prepare for zeroing the low resistance meter. b. After completing the zeroing, set the resistance measurement selection knob K2 to the "Group A Hot Battery One-Way" position, set the circuit power supply selection knob K1 to the "Group A Hot Battery Signal" position, press the resistance measurement button KA, record the "Low Resistance Meter" value, and release the resistance measurement button KA. c. Set the resistance measurement selection knob K2 to the "Group A Hot Battery Second Circuit" position, set the circuit power supply selection knob K1 to the "Group A Hot Battery Signal" position, press the resistance measurement button KA, record the "Low Resistance Meter" value, and release the resistance measurement button KA. d. Set the resistance measurement selection knob K2 to the "Group B Hot Battery Signal" position, set the circuit power supply selection knob K1 to the "Group B Hot Battery Circuit" position, press the resistance measurement button KA, record the "Low Resistance Meter" value, release the resistance measurement button KA, and complete the functional test of the hot battery. S2, Functional testing of the electric explosion-proof tube After zeroing the resistance measurement selector K2 to the "low resistance meter zero point" position, set the resistance measurement selector K2 to the "electric detonator circuit" position, set the circuit power supply selector K1 to the "electric detonator signal" position, press the resistance measurement button KA, record the "low resistance meter" value, and release the resistance measurement button KA to complete the functional test of the electric detonator. S3, Separator Pin Function Test a. Set the circuit power supply selection knob K1 to the "separation pin" position, press the resistance measurement button KA, pop up the product's separation pin, and release the resistance measurement button KA. b. Set the switch measurement selection knob K3 to the "micro switch S1" position, press the voltage measurement button KB, record the value of the switch measurement voltmeter PV1 and the value of the switch measurement ammeter PA1, and release the voltage measurement button KB; c. Set the switch measurement selection knob K3 to the "micro switch S2" position, press the voltage measurement button KB, record the value of the switch measurement voltmeter PV1 and the value of the switch measurement ammeter PA1, and release the voltage measurement button KB; d. Set the switch measurement selection knob K3 to the "micro switch S3" position, press the voltage measurement button KB, record the value of the switch measurement voltmeter PV1 and the value of the switch measurement ammeter PA1, release the voltage measurement button KB to complete the function test of the release pin.

[0011] Due to the adoption of the above technical solution, the present invention has the following beneficial effects: The device and method for testing the function of the separating pin, the electric detonator, and the thermal battery described in this invention converts the voltage through a power supply module and controls the low resistance test module through the control panel to complete the function testing of the electric detonator and the thermal battery. At the same time, it controls the voltage and current test module to complete the function testing of the separating pin. This invention is simple to operate, accurate in measurement, can meet the testing requirements, and is safe and stable in operation. It is also easy to carry, and its total volume is only 1 / 5 of the original single-function tester. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention.

[0013] Figure 2 This is a flowchart of the detection method of the present invention. Detailed Implementation

[0014] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0015] Combined with appendix Figure 1-2 The aforementioned device for testing the function of the separating pin, the electric detonator, and the thermal battery includes a control panel and a power supply module, a low resistance test module, and a voltage and current test module installed on the control panel. An external 220V power supply is fed into the power supply module via fuse F1 and power switch S1. After voltage regulation and filtering by the power supply module, it is converted into the required 27V linear DC power supply and the instrument operating voltages 24V and 5V. The 27V linear DC power supply is sent to the control panel via fuse F2 and 27V voltage switch S2, with a 27V voltmeter PV0 connected in parallel. The 24V instrument operating voltage is sent to the control panel's indicator light and status indicator light via fuses F3 and F4, respectively. The 5V instrument operating voltage is sent to the voltage and current test module and the instruments on the control panel. The instruments on the control panel include a low resistance meter, a switch-measuring voltmeter, a switch-measuring ammeter, and a 27V voltmeter. The 27V linear DC power output from the power supply module is sent to the two contacts K1-A and K1-B of the circuit power supply selection K1 after passing through the resistance measurement button KA on the control panel. The five positions of K1-A and K1-B respectively switch between the test states of no-load, A-group hot battery signal, B-group hot battery signal, electric detonator signal, and separation pin. When the electric detonator signal is selected in the circuit power supply selection K1-A, the product working voltage output from the power supply module is sent to the two contacts K3-A and K3-B of the switch measurement selection K3 after passing through the current limiting resistor R1 and the voltage measurement button KB. The four positions of K3-A and K3-B respectively switch between the test states of no-load, micro switch S1 circuit, micro switch S2 circuit, and micro switch S3 circuit, connecting the voltage and current test module to the detection circuit. The low resistance test module uses a low resistance meter (PR) to perform zero-point checks and resistance measurements.

[0016] The voltage and current testing module includes a switch measuring voltmeter PV1 and a switch measuring ammeter PA1. The switch measuring voltmeter PV1 and the switch measuring ammeter PA1 complete the voltage and current measurement in the on state of microswitches S1, S2, and S3 with the disconnect pins.

[0017] Furthermore, it also includes a resistance measurement selection K2 connected to the low resistance test module. The two contacts K2-A and K2-B of the resistance measurement selection K2 have five positions that respectively enable the selection of five levels: low resistance meter zero setting, Group A thermal battery one path, Group A thermal battery two path, Group B thermal battery circuit, and electric detonator circuit. Example

[0018] Based on the analysis of the working mechanism of precision-guided munitions for airborne applications, the items that need to be tested are: Group A thermal battery ignition circuit has one continuity resistor; Two-way conduction resistors for the group A thermal battery ignition circuit; The conduction resistance of the ignition circuit for Group B thermal batteries; The continuity resistance of the ignition circuit of the electric detonator; The conduction voltage and current of the micro switch S1 with the release pin; The conduction voltage and current of the micro switch S2 with the release pin; The conduction voltage and current of the micro switch S3 with the release pin.

[0019] The detection method of the disconnect switch, electric detonator and thermal battery function detection device described in this invention specifically includes the following steps: S1, Hot Battery Function Detection a. Turn on the 220V power switch S1 and the 27V voltage switch S2 in sequence. After checking that the voltmeter PV0 is normal, turn on the low resistance tester PR and set the resistance measurement button KA knob to the "low resistance meter zero position" position to prepare for zeroing the low resistance meter. b. After completing the zeroing, set the resistance measurement selection knob K2 to the "Group A hot battery circuit 1" position, set the circuit power supply selection knob K1 to the "Group A hot battery signal" position, press the resistance measurement button KA, record the low resistance meter PR value, release the resistance measurement button KA, and complete the detection of the continuity resistance of the Group A hot battery ignition circuit circuit 1. c. Set the resistance measurement selection knob K2 to the "Group A Hot Battery Second Circuit" position, set the circuit power supply selection knob K1 to the "Group A Hot Battery Signal" position, press the resistance measurement button KA, record the resistance meter PR value, release the resistance measurement button KA, and complete the detection of the continuity resistance of the Group A hot battery ignition circuit two circuits. d. Set the resistance measurement selection knob K2 to the "Group B hot battery signal" position, set the circuit power supply selection knob K1 to the "Group B hot battery circuit" position, press the resistance measurement button KA, record the resistance meter PR value, release the resistance measurement button KA, and complete the detection of the continuity resistance of the Group B hot battery ignition circuit. S2, Functional testing of the electric explosion-proof tube After zeroing the resistance measurement selector knob K2 to the "low resistance meter zero point" position, set the resistance measurement selector knob K2 to the "electric detonator circuit" position, set the circuit power supply selector knob K1 to the "electric detonator signal" position, press the resistance measurement button KA, record the "low resistance meter" value, release the resistance measurement button KA, and complete the detection of the conduction resistance of the electric detonator ignition circuit. S3, Separator Pin Function Test a. Set the circuit power supply selection knob K1 to the "separation pin" position, press the resistance measurement button KA, pop up the product's separation pin, and release the resistance measurement button KA. b. Set the switch measurement selection knob K3 to the "micro switch S1" position, press the voltage measurement button KB, record the value of the switch measurement voltmeter PV1 and the value of the switch measurement ammeter PA1, release the voltage measurement button KB to complete the detection of the conduction voltage and current of the micro switch S1 with the release pin; c. Set the switch measurement selection knob K3 to the "micro switch S2" position, press the voltage measurement button KB, record the value of the switch measurement voltmeter PV1 and the value of the switch measurement ammeter PA1, release the voltage measurement button KB to complete the detection of the conduction voltage and current of the micro switch S2 with the release pin; d. Set the switch measurement selection knob K3 to the "micro switch S3" position, press the voltage measurement button KB, record the value of the switch measurement voltmeter PV1 and the value of the switch measurement ammeter PA1, release the voltage measurement button KB to complete the detection of the conduction voltage and current of the disconnect pin micro switch S3.

[0020] Through the use of the above embodiments, the detection method is simple to operate, accurate in measurement, and can meet the detection requirements.

[0021] The parts of this invention not described in detail are prior art.

[0022] The embodiments selected herein for the purpose of disclosing the inventive objectives are currently considered suitable; however, it should be understood that the invention is intended to include all variations and modifications of the embodiments that fall within the scope of this concept and invention.

Claims

1. A device for testing the function of a separating pin, an electric detonator, and a thermal battery, comprising a control panel and a power supply module, a low resistance test module, and a voltage and current test module installed on the control panel, characterized in that: The external 220V power supply is fed into the power supply module via fuse F1 and power switch S1. After being regulated and filtered by the power supply module, it is converted into the required 27V linear DC power supply and the instrument operating voltages of 24V and 5V. The 27V linear DC power supply is sent to the control panel via fuse F2 and 27V voltage switch S2, and a 27V voltmeter PV0 is connected in parallel. The 24V instrument operating voltage is sent to the control panel's indicator light via fuses F3 and F4, respectively, and the 5V instrument operating voltage is sent to the voltage and current testing module and the instrument on the control panel. The 27V linear DC power output from the power supply module is sent to the two contacts K1-A and K1-B of the circuit power supply selection K1 after passing through the resistance measurement button KA on the control panel. The five positions of K1-A and K1-B respectively switch the test state between neutral, A group hot battery signal position, B group hot battery signal position, electric detonator signal position and separation pin position.

2. The device for testing the function of the separating pin, the electric explosion tube, and the thermal battery according to claim 1, characterized in that: The low resistance test module uses a low resistance meter (PR) to perform zero-point checks and resistance measurements.

3. The device for testing the function of the separating pin, the electric detonator, and the thermal battery according to claim 1, characterized in that: The voltage and current testing module includes a switch measuring voltmeter PV1 and a switch measuring ammeter PA1. The switch measuring voltmeter PV1 and the switch measuring ammeter PA1 complete the voltage and current measurement in the on state of microswitches S1, S2 and S3 with the disconnect pins.

4. The device for testing the function of the separating pin, the electric detonator, and the thermal battery according to claim 1, characterized in that: When the power supply selection K1-A is selected to select the electric detonator signal range, the product working voltage output by the power supply module is sent to the two contacts K3-A and K3-B of the switch measurement selection K3 after passing through the current limiting resistor R1 and the voltage measurement button KB. The four positions of K3-A and K3-B respectively complete the switching of the test state of the neutral, micro switch S1 circuit, micro switch S2 circuit and micro switch S3 circuit, and connect the voltage and current test module to the detection circuit.

5. The device for testing the function of the separating pin, the electric detonator, and the thermal battery according to claim 1, characterized in that: It also includes a resistance measurement selection K2 connected to the low resistance test module. The two contacts K2-A and K2-B of the resistance measurement selection K2 have five positions that respectively enable the selection of five levels: low resistance meter zero setting, Group A thermal battery one path, Group A thermal battery two path, Group B thermal battery circuit, and electric detonator circuit.

6. A testing method using the disconnect switch, detonator, and thermal battery function testing device according to any one of claims 1-5, specifically comprising the following steps: S1, Hot Battery Function Detection a. Turn on the 220V power switch S1 and the 27V voltage switch S2 in sequence. After checking that the voltmeter PV0 is normal, turn on the low resistance tester PR and set the resistance measurement button KA knob to the "low resistance meter zero position" position to prepare for zeroing the low resistance meter. b. After completing the zeroing, set the resistance measurement selection knob K2 to the "Group A Hot Battery One-Way" position, set the circuit power supply selection knob K1 to the "Group A Hot Battery Signal" position, press the resistance measurement button KA, record the "Low Resistance Meter" value, and release the resistance measurement button KA. c. Set the resistance measurement selection knob K2 to the "Group A Hot Battery Second Circuit" position, set the circuit power supply selection knob K1 to the "Group A Hot Battery Signal" position, press the resistance measurement button KA, record the "Low Resistance Meter" value, and release the resistance measurement button KA. d. Set the resistance measurement selection knob K2 to the "Group B Hot Battery Signal" position, set the circuit power supply selection knob K1 to the "Group B Hot Battery Circuit" position, press the resistance measurement button KA, record the "Low Resistance Meter" value, release the resistance measurement button KA, and complete the functional test of the hot battery. S2, Functional testing of the electric explosion-proof tube After zeroing the resistance measurement selector K2 to the "low resistance meter zero point" position, set the resistance measurement selector K2 to the "electric detonator circuit" position, set the circuit power supply selector K1 to the "electric detonator signal" position, press the resistance measurement button KA, record the "low resistance meter" value, and release the resistance measurement button KA to complete the functional test of the electric detonator. S3, Separator Pin Function Test a. Set the circuit power supply selection knob K1 to the "separation pin" position, press the resistance measurement button KA, pop up the product's separation pin, and release the resistance measurement button KA. b. Set the switch measurement selection knob K3 to the "micro switch S1" position, press the voltage measurement button KB, record the value of the switch measurement voltmeter PV1 and the value of the switch measurement ammeter PA1, and release the voltage measurement button KB; c. Set the switch measurement selection knob K3 to the "micro switch S2" position, press the voltage measurement button KB, record the value of the switch measurement voltmeter PV1 and the value of the switch measurement ammeter PA1, and release the voltage measurement button KB; d. Set the switch measurement selection knob K3 to the "micro switch S3" position, press the voltage measurement button KB, record the value of the switch measurement voltmeter PV1 and the value of the switch measurement ammeter PA1, release the voltage measurement button KB to complete the function test of the release pin.

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