A test device and test method for measuring the delay time of a front and rear stage fuze

Abstract

The application discloses a kind of test device and test method for measuring front and rear stage fuze ignition delay time, test device includes simulation cabin section, probe, control console, oscilloscope, the measured fuze is installed in simulation cabin section, simulation cabin section is equipped with probe in front and rear two ends, probe is connected oscilloscope by wire, oscilloscope is connected control console, control console is connected measured fuze product by long-distance control cable.Testing method includes setting test equipment output, measured fuze product power on, product release, ignition output, delay time measurement.This test device is composed of test tooling and commonly used test equipment, tooling is convenient to make, equipment is simple to operate, and test device cost is low;This test device and test method are a kind of new test method, solve the safety factor problem of equipment and person in test process, also solve the problem that specific test is limited by test environment;The ignition delay time of measured fuze is accurate, can be accurate microsecond level.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of fuze detonation test measurement, and particularly relates to a test device and a test method for measuring the detonation delay time of front and rear fuzes. BACKGROUND

[0002] As a control system for controlling the detonation of a warhead at the best time, the detonation time is an important indicator for evaluating the performance of the fuze. Especially for the front and rear series fuzes, the rear fuze is detonated after a certain time delay after the detonation of the front fuze, and therefore the detonation delay time between the front and rear fuzes is an important tactical and technical indicator of the ammunition. During the development of the fuze, some dynamic detonation tests are often performed, including the safety and margin test of the fuze, the completeness and margin test of the explosion, the fuze-warhead matching test, the detonation acceptance test and other explosive product detonation tests. Many times, the dynamic detonation delay time of the fuze is required to be measured as an indicator for the performance of product acceptance. Because the explosion test of the explosive product is involved, there is no good method for measuring the delay time. The traditional method for measuring the detonation time of the fuze is to collect the fire light of the electric detonator after the detonation of the fuze by high-speed photography to judge and count the time. This test method has a complex test site arrangement and a certain error in the test. Moreover, considering the safety factors of the person and the equipment, the high-speed photography equipment needs to be erected outside the safe distance of the test product, and therefore the test site has a greater limitation. If the equivalent of the explosive product of the test product is large, the test needs to be performed in a certain sealed explosion tank or explosion hole, and the traditional high-speed photography method is not applicable due to the lack of light illumination and the small space. SUMMARY

[0003] In view of the defects of the traditional test method, the purpose of the present application is to provide a test device and a test method for measuring the detonation delay time of front and rear fuzes, which is simple, accurate in timing, low in cost and good in applicability.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] A test device for measuring the detonation delay time of front and rear fuzes, the measured fuze product includes front and rear fuzes connected in series, and the front and rear fuzes each include an electric detonator and an electric actuator, and the rear fuze further includes a control unit. The test device includes a simulation cabin, a probe, a control console and an oscilloscope. The measured fuze is installed in the simulation cabin, the probe is arranged at the front and rear ends of the simulation cabin, the probe is connected to the oscilloscope through a wire, the oscilloscope is connected to the control console, and the control console is connected to the measured fuze product through a remote control cable.

[0006] As the preferred of the above-mentioned scheme, the simulation cabin is divided into front cabin and rear cabin by a partition plate, and the outer walls of the front cabin and the rear cabin are respectively provided with through holes for inserting the probes, and the partition plate is provided with a through hole for the cable of the front and rear fuzes to pass through.

[0007] As the preferred of the above-mentioned scheme, the front and rear fuzes are respectively installed in the front cabin and the rear cabin, and one probe is respectively installed in the front cabin and the rear cabin.

[0008] As the preferred of the above-mentioned scheme, the probe is a polytetrafluoroethylene medium semi-hard coaxial radio frequency cable, which comprises an inner conductor, an insulating layer, a shielding layer and a sheath layer arranged coaxially from inside to outside.

[0009] As the preferred of the above-mentioned scheme, the control console comprises two voltage stabilizing power supplies, three voltage stabilizing power supplies, diode indicator lights and trigger switches.

[0010] As the preferred of the above-mentioned scheme, the positive terminals of the oscilloscope are respectively connected to the inner conductors of the probes and the voltage stabilizing power supplies on the control console, and the negative terminal of the oscilloscope is connected to the shielding layer of the probe.

[0011] As the preferred of the above-mentioned scheme, the positive terminal of the 1 channel of the oscilloscope is connected to the inner conductor of the probe in the front cabin through AFR series PTFE insulated wire, and the positive terminal of the 1 channel is connected to the 10V voltage signal of the pull-up of the voltage stabilizing power supply on the control console through AFR series PTFE insulated wire, and the negative terminal is connected to the shielding layer of the probe in the front cabin through AFR series PTFE insulated wire; the positive terminal of the 2 channel of the oscilloscope is connected to the inner conductor of the probe in the rear cabin through AFR series PTFE insulated wire, and the positive terminal of the 2 channel is connected to the 10V voltage signal of the pull-up of the voltage stabilizing power supply on the control console through AFR series PTFE insulated wire, and the negative terminal is connected to the shielding layer of the probe in the rear cabin through AFR series PTFE insulated wire.

[0012] A testing method of a testing device for measuring the delay time of front and rear fuzes, comprising the following steps:

[0013] S1, setting the test equipment output: setting three voltage stabilizing power supplies, one output 28V, current not less than 2A, power supply for the measured fuse product; setting 2 output 28V, current not less than 3A, power supply for the front fuse; setting 3 output 28V, current not less than 3A, power supply for the rear fuse; setting two voltage stabilizing power supplies, 1 and 2 output 10V, current not less than 1A, pull-up for the oscilloscope detection signal, the oscilloscope is set to trigger channel 1, and the trigger voltage is 5V;

[0014] S2, power on the measured fuse product: press the 1 output switch of the three voltage stabilizing power supplies, power on the measured fuse product, and the control console confirms that the measured fuse product is self-checked normally according to the long light state of the diode indicator light;

[0015] S3, product release: press the three-way voltage regulator 2-way output switch, the front stage fuse release, the control console confirms the front stage fuse release normal according to the number of diode indicator light blinking; press the three-way voltage regulator 3-way output switch, the rear stage fuse release, the control console confirms the rear stage fuse release normal according to the number of diode indicator light blinking;

[0016] S4, detonation output: the control console gives the front stage fuse output trigger signal through the trigger switch, the rear stage fuse control unit detects the front stage fuse trigger signal, and then gives the front stage fuse output detonation signal through the connecting cable, and outputs the rear stage electric detonator detonation signal after a certain time delay, the front stage fuse receives the detonation signal and the electric detonator detonates, the air near the front stage fuse in the simulated cabin section ionizes due to the detonation of the electric detonator, the ionized air forms a conductive path between the inner conductor and the shielding layer of the probe in the front cabin, the 1-channel positive end 10V pull-up voltage of the oscilloscope 1 is effectively connected to the negative end, and the trigger output is high level, and the time is t1; the rear stage fuse receives the detonation signal and the electric detonator detonates, the air near the rear stage fuse ionizes due to the detonation of the electric detonator, the ionized air forms a conductive path between the inner conductor and the shielding layer of the probe in the rear cabin, the 2-channel positive end 10V pull-up voltage of the oscilloscope 2 is effectively connected to the negative end, and the output is high level, and the time is T2;

[0017] S5, delay time measurement: according to the time of the rising edge of the 1-channel and 2-channel detection signals collected by the 1-channel trigger of the oscilloscope, the time difference between t2 and t1 is the delay time of the detonation of the front and rear stage fuses.

[0018] As a preferred embodiment of the above scheme, after the test device is connected, the simulated cabin section is placed in an explosion room, an explosion hole, or an explosion tank test site, and the control console and the oscilloscope are placed in a steel house or a control room at a safe distance.

[0019] Due to the above structure, the beneficial effects of the present application are as follows:

[0020] 1. The test device is composed of a test tool and commonly used test equipment, the tool is easy to make, the equipment is easy to operate, and the test device has low cost;

[0021] 2. The test device and the test method can accurately measure the detonation delay time of the fuse, which can be accurate to the microsecond level;

[0022] 3. The test device and the test method are a new test method, which solves the safety factors of equipment and people in the test process, and also solves the problem of being limited by the test environment in specific tests. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description.

[0024] Figure 1 Functional block diagram of the test device connected to the application;

[0025] Figure 2 Functional block diagram of the fuse product group under test connected to the application;

[0026] Figure 3 Structure diagram of the simulation cabin connected to the application;

[0027] Figure 4 Structure diagram of the probe one connected to the application;

[0028] Figure 5 Structure diagram of the probe two connected to the application;

[0029] Figure 6 Functional block diagram of the control console connected to the application;

[0030] Figure 7 Flow chart of the test method connected to the application. DETAILED DESCRIPTION

[0031] The technical solutions of the application will be described clearly and completely in combination with the drawings of the application. All other embodiments obtained by those skilled in the art based on the embodiments of the application without creative labor are within the protection scope of the application.

[0032] As shown in Figure 2 , the fuse product under test 2 comprises: a front-stage fuse 201, a front-stage electric detonator 202, a front-stage electric actuator 203, a connecting cable 204, a rear-stage fuse 205, a rear-stage electric actuator 206, a control unit 207, a rear-stage electric detonator 208 and a connector 209. The connecting cable 204 connects the front-stage fuse 201 and the rear-stage fuse 205 through the connectors 209 at both ends.

[0033] For the above-mentioned fuse product under test 2, the embodiment provides a test device for measuring the ignition delay time of the front-stage and rear-stage fuses, as shown in Figure 1 , comprising: a simulation cabin 1, a probe one 3, a probe two 4, a control console 5, a long-distance control cable 6, an oscilloscope 7, a wire one 8, a wire two 9 and a wire three 10.

[0034] Among them:

[0035] As shown in Figure 3 , the simulation cabin 1 is provided with a partition plate 104 in the middle, which divides the simulation cabin 1 into a front cabin 103 and a rear cabin 106. The outer walls of the front cabin 103 and the rear cabin 106 are both provided with through holes (through hole one 101, through hole two 102) for the insertion of probes (probe one 3, probe two 4). Meanwhile, the partition plate 104 is provided with a through hole 105 for the passing of the connecting cable 204.

[0036] The probe one 3 and the probe two 4 are structurally identical, and both adopt a polytetrafluoroethylene medium semi-hard coaxial radio frequency cable, such as Figure 4 As shown in the figure, the probe one 3 comprises an inner conductor one 301, an insulating layer one 302, a shielding layer one 303 and a sheath layer one 304 coaxially arranged from inside to outside; as shown in the figure, Figure 5 The probe two 4 comprises an inner conductor two 401, an insulating layer two 402, a shielding layer two 403 and a sheath layer two 404. The inner conductor one 301 and the inner conductor two 401 are silver-plated copper wires, the insulating layer one 302 and the insulating layer two 402 are solid-core polytetrafluoroethylene, the shielding layer one 303 and the shielding layer two 403 are seamless copper pipes, and the sheath layer one 304 and the sheath layer two 404 are polytetrafluoroethylene.

[0037] As shown in the figure, Figure 6 The control console 5 comprises two-way voltage stabilizing power supply 501, three-way voltage stabilizing power supply 502, diode indicating lamp 503 and trigger switch 504.

[0038] The long-distance control cable 6 is a self-made cable assembly, containing a connector and a wire, and has electrical connection function with the front-stage fuze 201 and the rear-stage fuze 205 through the control unit 207 and the connecting cable 204.

[0039] The performance index of the oscilloscope 7 is a bandwidth of 500 MHz and a sampling rate of 2.5 GSa / s. The 1-channel positive terminal of the oscilloscope 7 is connected to the inner conductor of the probe (the probe one 3) in the front cabin through the AFR series PTFE insulated wire, and at the same time, the 1-channel positive terminal is connected to the pull-up 10V voltage signal of the voltage stabilizing power supply on the control console through the AFR series PTFE insulated wire, and the negative terminal is connected to the shielding layer of the probe in the front cabin through the AFR series PTFE insulated wire. The 2-channel positive terminal of the oscilloscope is connected to the inner conductor of the probe (the probe two 4) in the rear cabin through the AFR series PTFE insulated wire, and at the same time, the 2-channel positive terminal is connected to the pull-up 10V voltage signal of the voltage stabilizing power supply on the control console through the AFR series PTFE insulated wire, and the negative terminal is connected to the shielding layer of the probe in the rear cabin through the AFR series PTFE insulated wire.

[0040] The rear fuze 205 is fixedly installed in the rear cabin 106 in connection with the connecting cable 204, the other end of the connecting cable 204 is connected with the front fuze 201, the front fuze 201 is fixedly installed in the front cabin 103 from the front end of the simulation cabin section 1; the probe one 3 is inserted into the via one 101 for fixation, the probe two 4 is inserted into the via two 102 for fixation; the wire one 8 is connected with the inner conductor one 301 of the probe one 3 at one end of the core wire, the wire two 9 is connected with the inner conductor two 401 of the probe two 4 at one end of the core wire, the wire three 10 is connected with the shielding layer one 303 of the probe one 3 and the shielding layer two 403 of the probe two 4 at one end of the core wire respectively; the control console 5 is connected with the connector 209 of the measured fuze product 2 through the remote control cable 6, the remote control cable 6 is electrically connected with the three-way stabilized power supply 502 (power supply 1, power supply 2 and power supply 3), the diode indicating lamp 503 and the trigger switch 504 of the control console 5 respectively; the other end of the core wire of the wire one 8 is connected with the positive terminal of the 1 channel of the oscilloscope 7, the other end of the core wire of the wire two 9 is connected with the positive terminal of the 2 channel of the oscilloscope 7, the other end of the core wire of the wire three 10 is connected with the negative terminals of the 1 channel and the 2 channel of the oscilloscope 7; meanwhile, the positive terminals of the 1 channel and the 2 channel of the oscilloscope 7 are connected with the two-way stabilized power supply 501 (power supply 1 and power supply 2) of the control console 5. After the product is connected, the simulation cabin section 1 is placed in the explosion room, and the control console 5 and the oscilloscope 7 can be placed in the control room.

[0041] As shown in the embodiment, the embodiment also provides a test method of the test device for measuring the delay time of the front and rear fuzes, which comprises the following steps: Figure 7

[0042] Step 2: setting the test device: after the test device is connected, the simulation cabin section 1 can be placed in the explosion room, the explosion hole, the explosion tank and other test sites, but is not limited to the above explosion-resistant sites, the control console 5 and the oscilloscope 7 are placed in the steel house or the control room at a safe distance, then the 1 channel and the 2 channel of the two-way stabilized power supply 501 are set to output 10V, and the current is not less than 1A, so as to pull up the detection signal of the 1 channel and the 2 channel of the oscilloscope 7; the 1 channel of the three-way stabilized power supply 502 is set to output 28V, and the current is not less than 2A, so as to supply power to the measured fuze product 2, the 2 channel is set to output 28V, and the current is not less than 3A, so as to supply power to the front fuze 201; the 3 channel is set to output 28V, and the current is not less than 3A, so as to supply power to the rear fuze 205; the 1 channel of the oscilloscope 7 is set to trigger, and the trigger level is 5V;

[0043] Step 3: product power-on self-checking: the 1 channel of the three-way stabilized power supply 502 is pressed, 28V voltage is supplied to the measured fuze product 2 through the remote control cable 6, at this time, according to the state of the diode indicating lamp 503 of the control console 5, the diode indicating lamp 503 is long bright for 5s and then extinguished, it is confirmed that the self-checking of the measured fuze product 2 is normal, and at the same time, the 1 channel and the 2 channel of the two-way stabilized power supply are pressed;

[0044] ​Step 4 is product arming: press the 2-way output switch of the three-way voltage stabilizer 502, 28V voltage is supplied to the front-stage electric actuator 203 of the front-stage fuze 201 through the remote control cable 6 and the connecting cable 204, the front-stage electric actuator 203 is actuated, at this time, the control console 5 confirms that the front-stage fuze arming is normal according to the number of times of the diode indicator light 503 flashing, which is 6 times and then long light; press the 3-way output switch of the three-way voltage stabilizer 502, 28V voltage is supplied to the rear-stage electric actuator 206 of the rear-stage fuze 205 through the remote control cable 6, the rear-stage electric actuator 206 is actuated, at this time, the control console 5 confirms that the rear-stage fuze arming is normal according to the number of times of the diode indicator light 503 flashing, which is 12 times and then extinguishing;

[0045] Step 5 is outputting explosion: close the trigger switch 504 of the control console 5, a trigger signal is supplied to the rear-stage fuze through the remote control cable 6 and the connecting cable 204, the control unit 207 of the rear-stage fuze 205 detects the trigger of the front-stage fuze 201, and outputs an explosion signal to the front-stage electric detonator 202 of the front-stage fuze 201 through the connecting cable 204, and outputs an explosion signal to the rear-stage electric detonator 208 of the rear-stage fuze 205 after a certain time delay, the front-stage electric detonator 202 is exploded, in the front cabin 103 of the simulation cabin section 1, the air near the front-stage fuze 201 is ionized due to the explosion of the front-stage electric detonator 202, so that the inner conductor 301 and the shielding layer 303 of the probe 1 3 form a conductive path, the 1-channel positive terminal 10V pull-up voltage of the oscilloscope 7 is effective, and the trigger output is high level, at this moment, the time is t1; the rear-stage electric detonator 208 of the rear-stage fuze 205 receives the explosion signal and is exploded, so that the inner conductor 401 and the shielding layer 403 of the probe 2 4 form a conductive path, the 2-channel 10V pull-up voltage of the oscilloscope 7 is effective, and the output is high level, at this moment, the time is t2;

[0046] Step 6 is delay time measurement: the oscilloscope 7 displays the rising edges of the 1-channel detection signal and the 2-channel detection signal on the screen according to the 1-channel trigger, and the time difference between t2 and t1 is the delay time of the explosion of the front-stage and rear-stage fuzes of the measured fuze product 2, and the delay time of the explosion of the front-stage and rear-stage fuzes can reach microsecond level.

[0047] The preferred embodiments of the application have been described above, but the application is not limited to them, and various modifications and changes can be made by those skilled in the art within the spirit and principle of the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A test method for a test device for measuring the delay time of a front and rear stage fuze, characterized by: The method comprises the following steps: S1, setting test equipment output: setting three-way stabilized power supply 1-way output 28V, current not less than 2A, power supply for the measured fuze product; setting 2-way output 28V, current not less than 3A, power supply for the front-stage fuze; setting 3-way output 28V, current not less than 3A, power supply for the rear-stage fuze; setting two-way stabilized power supply 1-way and 2-way output 10V, current not less than 1A, signal for the oscilloscope detection is pulled up, setting 1 channel of the oscilloscope as trigger, trigger voltage is 5V; S2, the measured fuze product is powered on: pressing 1-way output switch of the three-way stabilized power supply, the measured fuze product is powered on, the control console confirms that the measured fuze product is self-checked normally according to the long-bright state of the diode indicator; S3, product arming: pressing 2-way output switch of the three-way stabilized power supply, the front-stage fuze is armed, the control console confirms that the front-stage fuze is armed normally according to the flicker times of the diode indicator; pressing 3-way output switch of the three-way stabilized power supply, the rear-stage fuze is armed, the control console confirms that the rear-stage fuze is armed normally according to the flicker times of the diode indicator; S4, initiation output: the control console gives the front-stage fuze trigger signal through the trigger switch, after the rear-stage fuze control unit detects the trigger signal of the front-stage fuze, the rear-stage fuze outputs the initiation signal through the connecting cable, and after a certain time delay, the rear-stage electric detonator initiation signal is output, after receiving the initiation signal, the electric detonator of the front-stage fuze is initiated, in the front cabin of the simulation cabin section, the air near the front-stage fuze is ionized due to the initiation of the electric detonator, the ionized air makes the inner conductor and the shielding layer of the probe in the front cabin form a conductive path, the 10V pull-up voltage of the 1 channel of the oscilloscope is effectively connected to the negative terminal, and the trigger output is high level, at this moment, t1; after receiving the initiation signal, the electric detonator of the rear-stage fuze is initiated, the air near the rear-stage fuze is ionized due to the initiation of the electric detonator, the ionized air makes the inner conductor and the shielding layer of the probe in the rear cabin form a conductive path, the 10V pull-up voltage of the 2 channel of the oscilloscope is effectively connected to the negative terminal, and the output is high level, at this moment, T2; S5, delay time measurement: according to the time of the rising edge of the 1 channel and 2 channel detection signals collected by the 1 channel trigger of the oscilloscope, the time difference between t2 and t1 is the delay time of the front-stage and rear-stage fuze initiation; The measured fuze product comprises the front-stage fuze and the rear-stage fuze connected in series, and the front-stage and rear-stage fuze each comprises an electric detonator and an electric actuator, and the rear-stage fuze further comprises a control unit, the test device comprises a simulation cabin section, a probe, a control console, an oscilloscope, the measured fuze is installed in the simulation cabin section, the simulation cabin section is provided with probes at the front end and the rear end, the probes are connected to the oscilloscope through wires, the oscilloscope is connected to the control console, and the control console is connected to the measured fuze product through a long-distance control cable; The simulation cabin section is provided with a partition plate in the middle, and is divided into a front cabin and a rear cabin, the outer walls of the front cabin and the rear cabin are each provided with a via hole for inserting the probe, and the partition plate is provided with a through hole for the cable connecting the front-stage and rear-stage fuze to pass through; The front-stage fuze and the rear-stage fuze are respectively installed in the front cabin and the rear cabin, and one probe is respectively installed in the front cabin and the rear cabin; The control console comprises two-way stabilized power supply, three-way stabilized power supply, diode indicator and trigger switch. The positive terminal of the oscilloscope is connected with the inner conductor of the probe and the stabilized power supply on the console respectively, and the negative terminal of the oscilloscope is connected with the shielding layer of the probe.

2. The test method of the test device for measuring the delay time of the front and rear stage fuzes according to claim 1, characterized in that: The probe adopts a polytetrafluoroethylene medium semi-hard coaxial radio frequency cable, which comprises an inner conductor, an insulating layer, a shielding layer and a sheath layer arranged coaxially from inside to outside.

3. The test method of the test device for measuring the delay time of the front and rear stage fuzes according to claim 1, characterized in that: The 1-channel positive terminal of the oscilloscope is connected with the inner conductor of the probe in the front cabin through AFR series PTFE insulated wires, and at the same time, the 1-channel positive terminal is connected with the pull-up 10V voltage signal of the two stabilized power supplies on the console through AFR series PTFE insulated wires, and the negative terminal is connected with the shielding layer of the probe in the front cabin through AFR series PTFE insulated wires; the 2-channel positive terminal of the oscilloscope is connected with the inner conductor of the probe in the rear cabin through AFR series PTFE insulated wires, and at the same time, the 2-channel positive terminal is connected with the pull-up 10V voltage signal of the two stabilized power supplies on the console through AFR series PTFE insulated wires, and the negative terminal is connected with the shielding layer of the probe in the rear cabin through AFR series PTFE insulated wires.

4. The test method of the test device for measuring the delay time of the front and rear stage fuzes according to claim 1, characterized in that: After the connection of the testing device is completed, the simulation cabin section is placed in the explosion room test site, and the console and the oscilloscope are placed in the steel house at a safe distance.

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