Multipath synchronous time measuring device and method for initiating explosive device

Abstract

The invention relates to a multipath synchronous time measuring device and method for a firer device. The device comprises a detonation tester, a screw sleeve, an ionization signal receiver, a target line box and a data acquisition system, the detonation tester is connected with the initiating explosive device exploder or igniter, the ionization signal receiver is fixed at one end of the threaded sleeve, and the other end of the threaded sleeve is screwed at the output end of the initiating explosive device exploder or igniter; the detonation tester outputs a direct current signal and applies the direct current signal to the initiating explosive device, after the output end of the initiating explosive device works, the working output end of the initiating explosive device generates an ionization phenomenon to form electrons and ions, an ionization signal receiver fixed to the output end of the initiating explosive device through a threaded sleeve receives an ionization signal, and the ionization signal conducts a pole needle of the ionization signal receiver; the pole needle is connected with a target line of a test loop in the target line box, and the test loop converts an ionization signal into a voltage signal and transmits the voltage signal to a data acquisition system; and the data acquisition system is used for acquiring a current-time curve of the initiating explosive device and a target line voltage-time curve in the target line box, and measuring the time of the initiating explosive device from energization to working of each output end according to the change of the target line voltage.

Description

Technical Field

[0001] The present invention relates to a multi-channel synchronous timing device and method for initiating explosive devices, which is applicable to multi-channel synchronous timing during the operation of the detonating system of initiating explosive devices and belongs to the technical field of initiating explosive device testing. Background Art

[0002] Due to its outstanding advantages (instantaneity, high synchronism), the detonating system technology of initiating explosive devices is widely used in the multi-functional separation and actuation scenarios of aircraft.

[0003] Chinese Patent CN110768685A, named Ionization Signal Receiver, Preparation Tooling, Method and Initiating Explosive Device Testing System, aligns and closely adheres the signal receiving end of the ionization signal receiver to the output end face of the multi-channel linear initiating explosive device and fixes it with adhesive tape. It requires the test personnel to align and closely adhere the signal receiving end of the ionization signal receiver to the output end face of the multi-channel linear initiating explosive device with adhesive tape, which is difficult to ensure that the signal receiving end of the ionization signal receiver is aligned and closely adhered to the output end face of the multi-channel linear initiating explosive device, and cannot be quickly installed on the output end face of the initiating explosive device.

[0004] Currently, for the working time test of initiating explosive devices with high synchronism and no connecting thread at the output end, the ionization signal receiver, preparation tooling, method and initiating explosive device testing system of CN110768685A are used for the test. For the working time test of general initiating explosive devices, currently mainly manual break - through paper targets and break - through probe targets are used for the test. The principle is that when the initiating explosive device works, it generates ions, conducts the two - pole needles of the manual break - through paper target or break - through probe target, and causes a sudden change in the voltage applied at both ends of the target wire, thereby judging the working time of the initiating explosive device.

[0005] The existing working time test technology of initiating explosive devices mainly has the following problems:

[0006] (1) When the ionization signal receiver, preparation tooling, method and initiating explosive device testing system of CN110768685A are connected to the initiating explosive device, they are fixed with adhesive tape, and the influence of test personnel is relatively large. It is applicable to the output end of the initiating explosive device without connecting thread, but not applicable to the output end of the initiating explosive device with connecting thread and the thread size is much larger than the ionization signal receiver. The size difference of the connection part is large, and it is difficult to fix with adhesive tape and not easy to align.

[0007] (2) The manual break - through paper target is also fixed to the output end of the initiating explosive device with adhesive tape, resulting in problems such as non - tight fitting, uneven notch size of the target wire, large test error and data loss. Summary of the Invention

[0008] The technical problem solved by the present invention is: overcoming the deficiencies of the prior art, providing a multi - channel synchronous timing device and method that are convenient and fast to install, closely adhere and have high reliability.

[0009] The solution of the present invention to solve the technical problem is: a multi-channel synchronous timing device for an initiating device, which device includes an initiating tester, a bushing, an ionization signal receiver, a target wire box, and a data acquisition system;

[0010] The initiating tester is connected to the initiator or igniter of the initiating device. The ionization signal receiver is fixed at one end of the bushing, and the other end of the bushing is screwed onto the output end of the initiator or igniter of the initiating device;

[0011] The initiating tester outputs a direct current signal and applies it to the initiating device. After the output end of the initiating device works, an ionization phenomenon occurs at the working output end of the initiating device, forming electrons and ions. The ionization signal receiver fixed to the output end of the initiating device through the bushing receives the ionization signal. The ionization signal conducts the pole needle of the ionization signal receiver, and the pole needle connects the target wire in the test circuit in the target wire box. The test circuit converts the ionization signal into a voltage signal and transmits it to the data acquisition system;

[0012] The data acquisition system obtains the current-time curve of the initiating device and the target wire voltage-time curve inside the target wire box, and measures the time from when the initiating device is powered on to when each output end works according to the change of the target wire voltage.

[0013] Preferably, the pole needle of the ionization signal receiver passes through the threaded end of the bushing and is fixed in the concave hole of the bushing. And the plane where the end of one end of the pole needle of the ionization signal receiver is located is the receiving surface of the ionization signal receiver. This receiving surface is higher than the bottom surface of the relief groove of the bushing. The pole needles are divided into two groups. The other end of one group of pole needles is connected to the positive pole of the target wire, and the other end of the other group of pole needles is connected to the negative pole of the target wire.

[0014] Preferably, the length of the threaded end of the bushing is less than the length of the thread at the output end of the initiating device. The output end of the initiator or igniter of the initiating device is screwed onto the bushing and contacts the ionization signal receiving surface.

[0015] Preferably, the test circuit includes a power supply, a resistor R, a first target wire, a second target wire, and a light-emitting diode D1;

[0016] The positive pole of the power supply is connected to the anode of the light-emitting diode D1. The cathode of the light-emitting diode D1 is connected in series with the resistor R. The resistor R is connected to the first target wire. The first target wire is connected to the positive pole needle of the ionization signal receiver. The negative pole of the power supply is connected to the negative pole needle of the ionization signal receiver through the second target wire. The test circuit converts the ionization signal into a voltage signal between the positive and negative poles of the ionization signal receiver and transmits it to the data acquisition system.

[0017] Preferably, the tightening torque of the bushing is 2 N to 3 N.

[0018] Preferably, the ionization signal receiver is in a four-pin, two-wire mode. Every two pole needles are screwed together as one pole of the target wire, with two pairs in redundancy.

[0019] Preferably, the receiving surface of the ionization signaler is 0.5 mm to 1 mm higher than the bottom surface of the relief groove of the screw sleeve.

[0020] Preferably, the ionization signal receiver is fixedly arranged in the screw sleeve in a tight fit manner.

[0021] Preferably, when the charge at the output end of the initiator device is explosive, the distance between the pole needles is not greater than 0.5 mm, and when the charge at the output end of the initiator device is gunpowder, the distance between every two pole needles of the ionization signal receiver should be less than 0.2 mm.

[0022] Another technical solution of the present invention is: a method for synchronously measuring the time of multiple channels of an initiator device, and the method includes the following steps:

[0023] S1. The ionization signal receiver is fixed in the screw sleeve, the screw sleeve is screwed onto the output end of the initiator device, the positive pole needle of the ionization signal receiver is connected to the first target wire end of the test circuit, the negative pole needle is connected to the second target wire end of the test circuit, and the voltage signal between the first target wire end and the second target wire end is used as the signal at the output end of the target wire box and connected to the data acquisition system; the detonation tester is connected to the detonator or igniter of the initiator device;

[0024] S2. After the output end of the initiator device works, the detonation tester outputs a direct current signal and applies it to the initiator device. The working output end of the initiator device generates an ionization phenomenon, forming various electrons and ions. The ionization signal receiver fixed to the output end of the initiator device through the screw sleeve receives the ionization signal, and the ionization signal is transmitted to the target wire box through a wire. The target wire box converts the ionization signal into a voltage signal and transmits it to the data acquisition system, realizing the time from the power-on of the initiator device to the working of the output end. The data acquisition system processes the voltage signal of the target wire box to obtain the current-time curve of the initiator device and the output voltage-time curve of the target wire box; the data acquisition system obtains the time from the power-on of the initiator device to the working of the output end according to the characteristic points of the current-time curve and the output voltage-time curve of the target wire box.

[0025] The beneficial effects of the present invention compared with the prior art are:

[0026] (1). The present invention uses an ionization signal receiver to replace the self-made paper target board in the prior art, reducing the target board production time, avoiding large test errors and data loss caused by inconsistent target distances, and improving the consistency of ionization target setting.

[0027] (2). The present invention uses a screw sleeve to replace the medical adhesive tape in the prior art, reducing the target wire setting time and improving the efficiency and reliability of target wire setting.

[0028] (3). The ionization signal receiver + screw sleeve mode of the present invention avoids the situation of poor adhesion of low-temperature medical adhesive tape and difficult ionization target setting. Description of the Drawings

[0029] Figure 1 This is a schematic diagram of the connection state of the device in the embodiment of the present invention;

[0030] Figure 2 This is a connection diagram of the output end - nut - ionization signal receiver of the device in the embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of the ionization signal receiver of the device in the embodiment of the present invention;

[0032] Figure 4 is a schematic diagram of the nut of the device in the embodiment of the present invention;

[0033] Figure 5 This is the test circuit of the embodiment of the present invention. Detailed implementation manners

[0034] The present invention will be further described below in conjunction with embodiments.

[0035] As Figure 1 shown, the present invention provides a multi-channel synchronous timing device for initiating explosive devices, which includes a detonator tester 1, a nut 2, an ionization signal receiver 3, a target wire box 4, and a data acquisition system 5;

[0036] The detonator tester is connected to the initiator or igniter of the initiating explosive device. The ionization signal receiver is fixed at one end of the nut, and the other end of the nut is screwed onto the output end of the initiator or igniter of the initiating explosive device;

[0037] The detonator tester outputs a direct current signal and applies it to the initiating explosive device. After the output end of the initiating explosive device works, an ionization phenomenon occurs at the working output end of the initiating explosive device, forming electrons and ions. The ionization signal receiver fixed at the output end of the initiating explosive device through the nut receives the ionization signal. The ionization signal conducts the pole needle of the ionization signal receiver, and the pole needle connects the target wire in the test circuit in the target wire box. The test circuit converts the ionization signal into a voltage signal and transmits it to the data acquisition system;

[0038] The data acquisition system obtains the current - time curve of the initiating explosive device and the target wire voltage - time curve inside the target wire box, and measures the time from when the initiating explosive device is powered on to when each output end works according to the change of the target wire voltage.

[0039] Preferably, the pole needle of the ionization signal receiver passes through the threaded end of the nut and is fixed in the concave hole of the nut. And the plane where one end of the pole needle of the ionization signal receiver is located is the receiving surface of the ionization signal receiver. This receiving surface is higher than the bottom surface of the relief groove of the nut. The pole needle is divided into two groups. The other end of one group of pole needles is connected to the positive pole of the target wire, and the other end of the other group of pole needles is connected to the negative pole of the target wire.

[0040] Preferably, after the screw sleeve 2 is installed on the output end of the pyrotechnic device, there should be a spacing between the bottom surface of the screw sleeve and the undercut groove at the output end of the pyrotechnic device. The length of the threaded end of the screw sleeve is less than the threaded length of the output end of the pyrotechnic device. The output end of the initiator or igniter of the pyrotechnic device is screwed onto the screw sleeve to contact the ionization signal receiving surface.

[0041] As Figure 5 shown, the test circuit includes a power supply, a resistor R, a first target wire, a second target wire, and a light-emitting diode D1;

[0042] The positive pole of the power supply is connected to the anode of the light-emitting diode D1. The cathode of the light-emitting diode D1 is connected in series with the resistor R. The resistor R is connected to the first target wire. The first target wire is connected to the positive pole needle of the ionization signal receiver. The negative pole of the power supply is connected to the negative pole needle of the ionization signal receiver through the second target wire. The test circuit converts the ionization signal into a voltage signal between the positive and negative poles of the ionization signal receiver and transmits it to the data acquisition system.

[0043] Preferably, the ionization signal receiver is in a four-needle, two-wire mode. Every two needle tips are screwed together as one pole of the target wire, with two pairs being redundant.

[0044] Preferably, according to the thread specifications of the output end of the pyrotechnic device and the specifications of the ionization signal receiver, the specifications of the screw sleeve are determined, including the concave hole size, thread size, and thread undercut size of the ionization signal receiver. The outer diameter of the outer cylindrical surface of the ionization signal receiver 3 should be 0.02 mm to 0.05 mm larger than the concave hole diameter of the screw sleeve 2. The fixing method between the two is a tight fit to avoid friction with the ionization signal receiver 3 when installing the output end of the pyrotechnic device. The receiving surface of the ionization signal receiver is 0.5 mm to 1 mm higher than the bottom surface of the undercut groove of the screw sleeve, ensuring that the output end surface of the pyrotechnic device is closely attached to the receiving surface of the ionization signal receiver 3. The fixing method of the ionization signal receiver in the screw sleeve is a tight fit (0.02 mm to 0.05 mm). The ionization signal receiver is made of non-metallic material.

[0045] Before the test, the electron density generated after the operation of the output end of the pyrotechnic device can be calculated based on the type of propellant and the amount of charge at the output end of the pyrotechnic device, etc., and the conductivity can be further estimated;

[0046] Electron density calculation formula:

[0047]

[0048] where m e is the electron mass, k is the Boltzmann constant, T is the gas temperature, h is the Planck constant, n P is the particle number density of each component, I p is the first-order ionization energy of the component.

[0049] The present invention selects the number of pole needles and the pole needle spacing of the ionization signal receiver according to the electron density and conductivity generated after the output end of the pyrotechnic device works. The number of pole needles of the ionization signal receiver when the output end agent is explosive can be 2, and the pole needle spacing is generally less than 0.5mm; the number of pole needles of the ionization signal receiver when the output end agent is gunpowder is 4 (two-to-two redundant), and the pole needle spacing is generally less than 0.2mm.

[0050] When the output end of the pyrotechnic device is charged with explosives, the distance between the pole pins is no more than 0.5mm, and when the output end of the pyrotechnic device is charged with gunpowder, the distance between each two pole pins of the ionization signal receiver should be less than 0.2mm. The tightening torque of the screw sleeve is 2N to 3N, and the output end of the pyrotechnic device is firmly fixed during operation.

[0051] The present invention also provides a multi-channel synchronous timing method for an pyrotechnic device, the method comprising the following steps:

[0052] S1. Build a multi-channel synchronous timing rapid installation device: the ionization signal receiver 3 is fixed in the screw sleeve 2, the screw sleeve 2 is screwed on the output end of the pyrotechnic device, the positive pole needle of the ionization signal receiver 3 is connected to the first target wire end of the test loop, and the negative pole needle is connected to the second target wire end of the test loop. The voltage signal between the first target wire end and the second target wire end is used as the output end signal of the target wire box 4 to connect the data acquisition system 5; the detonation tester 1 is connected to the detonator or igniter of the pyrotechnic device;

[0053] S2. After the output end of the pyrotechnic device works, the detonation tester 1 outputs a DC signal and applies it to the pyrotechnic device. The working output end of the pyrotechnic device generates ionization to form various electrons and ions. The ionization signal receiver 3 fixed to the output end of the pyrotechnic device by the screw sleeve 2 receives the ionization signal. The ionization signal is transmitted to the target wire box 4 through a wire. The target wire box converts the ionization signal into a voltage signal and transmits it to the data acquisition system 5, so as to realize the time from power-on to the output end of the pyrotechnic device working. The data acquisition system processes the voltage signal of the target wire box to obtain the current-time curve of the pyrotechnic device and the output voltage-time curve of the target wire box. The data acquisition system obtains the time from power-on to the output end of the pyrotechnic device working according to the characteristic points of the current-time curve and the output voltage-time curve of the target wire box.

[0054] In a specific embodiment of the present invention, the steps of applying the above-mentioned pyrotechnic device multi-channel synchronous timing rapid installation device are as follows:

[0055] (1) Select the ionization signal receiver 4 according to the type and amount of the explosive at the output end of the pyrotechnic device;

[0056] (2) According to the thread specifications of the output end of the pyrotechnic device and the specifications of the ionization signal receiver 4, the specifications of the screw sleeve 2 are determined, including the concave hole size, thread size, and thread retraction size of the ionization signal receiver. The end face of the ionization signal receiver is 0.5mm to 1mm higher than the bottom surface of the screw sleeve retraction groove. The ionization signal receiver is fixed in the screw sleeve in a tight fit (0.02mm to 0.05mm).

[0057] (3) The ionization signal receiver is made of non-metallic material.

[0058] (4) Build a multi-channel synchronous timing rapid installation device, and the output end of the pyrotechnic device is firmly fixed during operation;

[0059] (5) Use a wire to test the on-off state of the test target wire connected to the ionization signal receiver 3. When the wire conducts the positive and negative poles of the ionization signal receiver 3, the indicator light of the target wire box 4 is on, and the test channel of the data acquisition system 5 is low level. When the wire disconnects the positive and negative poles of the ionization signal receiver 3, the indicator light of the target wire box 4 is off, and the test channel of the data acquisition system 5 is high level;

[0060] (6) Use the target wire box 4 and the data acquisition system 5 to test the on-off state of the ionization signal receiver 3. The wire disconnects the positive and negative poles of the ionization signal receiver 3. The indicator light of the target wire box 4 is off, the test channel of the data acquisition system 5 is at a high level, and the ionization signal receiver 3 is in an off state.

[0061] (7) After the output end of the pyrotechnic device works, the detonation tester 1 outputs a DC signal and applies it to the pyrotechnic device. The output end of the pyrotechnic device generates ionization to form various electrons and ions. The ionization signal is received by the ionization signal receiver 3 fixed to the output end of the pyrotechnic device by the screw sleeve 2. The ionization signal is transmitted to the target wire box 4 through a wire. The target wire box converts the ionization signal into a voltage signal and transmits it to the data acquisition system 5 to realize the time from power-on to the output end of the pyrotechnic device working. The data acquisition system processes the voltage signal of the target wire box to obtain the current-time curve and the target wire voltage-time curve of the pyrotechnic device. The data acquisition system obtains the time from power-on to the output end of the pyrotechnic device working according to the characteristic points of the current-time curve and the target wire voltage-time curve.

[0062] In summary, through the reasonable design of the screw sleeve 2, the present invention realizes the rapid installation of the ionization signal receiver 3 in the multi-channel output device of the pyrotechnic device, and accurately measures the working time from the power-on of the pyrotechnic device to each output end. It includes several aspects such as the installation, signal transmission, and conversion of the ionization signal receiver 3. Specifically, the ionization signal receiver 3 is fixed in the screw sleeve 2, the screw sleeve 2 is screwed onto the output end of the pyrotechnic device, the pole needles of the ionization signal receiver 3 are respectively connected to the positive and negative poles of the target wire, the target wire is connected to the input port of the target wire box 4, and the output port of the target wire box 4 is connected to the data acquisition system 5; the detonation tester 1 is connected to the detonator or igniter of the pyrotechnic device. The detonation tester 1 outputs a direct current signal and applies it to the pyrotechnic device. After the output end of the pyrotechnic device works, an ionization phenomenon occurs, forming various electrons and ions. The ionization signal receiver 3 fixed to the output end of the pyrotechnic device by the screw sleeve 2 receives the ionization signal, and the ionization signal is transmitted to the target wire box 4 through the wire. The target wire box converts the ionization signal into a voltage signal and transmits it to the data acquisition system 5, realizing the time from the power-on of the pyrotechnic device to the work of the output end. The data acquisition system processes the voltage signal of the target wire box to obtain the current-time curve and the target wire voltage-time curve of the pyrotechnic device; the data acquisition system obtains the time from the power-on of the pyrotechnic device to the work of the output end according to the characteristic points of the current-time curve and the target wire voltage-time curve.

[0063] The present invention reduces the production time of the target plate, avoids large data errors and data loss caused by inconsistent target distances, and improves the consistency of the ionization target setting; reduces the target wire setting time, improves the efficiency and reliability of the target wire setting; and avoids the situation of poor adhesion of low-temperature medical adhesive tape and difficult ionization target setting.

[0064] Although the present invention has been disclosed above with preferred embodiments, it is not used to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solution of the present invention by using the disclosed methods and technical contents without departing from the spirit and scope of the present invention. Therefore, any simple modification, equivalent change, and modification made to the above embodiments according to the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A multi-channel synchronous timing device for an explosive device, characterized in that Including detonation tester, screw sleeve, ionization signal receiver, target box, data acquisition system; The detonation tester is connected to the detonator or igniter of the pyrotechnic device, the ionization signal receiver is fixed to one end of the screw sleeve, and the other end of the screw sleeve is screwed to the output end of the detonator or igniter of the pyrotechnic device; The detonation tester outputs a direct current signal which is applied to the pyrotechnic device. After the output end of the pyrotechnic device works, ionization occurs at the output end of the pyrotechnic device to form electrons and ions. The ionization signal is received by an ionization signal receiver fixed to the output end of the pyrotechnic device through a screw sleeve. The ionization signal conducts the pole needle of the ionization signal receiver, and the pole needle connects the target wire of the test circuit in the target wire box. The test circuit converts the ionization signal into a voltage signal and transmits it to the data acquisition system. The data acquisition system obtains the current-time curve of the pyrotechnic device and the voltage-time curve of the target line inside the target line box, and measures the time from power-on to the operation of each output end of the pyrotechnic device according to the change of the target line voltage.

2. A multi-channel synchronous timing device for an pyrotechnic device according to claim 1, characterized in that The pole needle of the ionization signal receiver passes through the threaded end of the screw sleeve and is fixed in the concave hole of the screw sleeve, and the plane where the end of one end of the pole needle of the ionization signal receiver is located is the receiving surface of the ionization signal receiver, and the receiving surface is higher than the bottom surface of the screw sleeve retreat groove. The pole needles are divided into two groups, and the other end of one group of pole needles is connected to the positive electrode of the target line, and the other end of the other group of pole needles is connected to the negative electrode of the target line.

3. A multi-channel synchronous timing device for an pyrotechnic device according to claim 2, characterized in that The length of the threaded end of the screw sleeve is smaller than the length of the threaded end of the pyrotechnic device output end, and the output end of the detonator or igniter of the pyrotechnic device is screwed on the screw sleeve to contact the ionization signal receiving surface.

4. A multi-channel synchronous timing device for an pyrotechnic device according to claim 2, characterized in that: The test circuit includes a power supply, a resistor R, a first target line, a second target line, and a light emitting diode D1; The positive pole of the power supply is connected to the anode of the light-emitting diode D1, the cathode of the light-emitting diode D1 is connected in series with a resistor R, the resistor R is connected to the first target line, the first target line is connected to the positive electrode needle of the ionization signal receiver, the negative pole of the power supply is connected to the negative electrode needle of the ionization signal receiver through the second target line, and the test circuit converts the ionization signal into a voltage signal between the positive and negative electrodes of the ionization signal receiver and transmits it to the data acquisition system.

5. A method for rapid installation of multi-channel synchronous timing of an pyrotechnic device according to claim 2, characterized in that: The tightening torque of the screw sleeve is 2N to 3N.

6. A method for rapid installation of multi-channel synchronous timing of an pyrotechnic device according to claim 2, characterized in that: The ionization signal receiver is a four-pin, two-wire type, with every two pole needles twisted together as one pole of the target line, with two redundancy.

7. A method for rapid installation of multi-channel synchronous timing of an pyrotechnic device according to claim 2, characterized in that: The receiving surface of the ionization signal device is 0.5mm to 1mm higher than the bottom surface of the screw sleeve retreat groove.

8. A method for rapid installation of multi-channel synchronous timing of an pyrotechnic device according to claim 2, characterized in that: The ionization signal receiver is fixed in the threaded sleeve in a tight fit.

9. A method for rapid installation of multi-channel synchronous timing of an pyrotechnic device according to claim 2, characterized in that: When the output end of the pyrotechnic device is charged with explosives, the distance between the pole needles is no more than 0.5 mm. When the output end of the pyrotechnic device is charged with gunpowder, the distance between every two pole needles of the ionization signal receiver should be less than 0.2 mm.

10. A method for multi-channel synchronous timing of an pyrotechnic device according to claim 2, characterized in that: The steps include: S1, an ionization signal receiver (3) is fixed in a screw sleeve (2), the screw sleeve (2) is screwed on the output end of the pyrotechnic device, the positive pole needle of the ionization signal receiver (3) is connected to the first target wire end of the test loop, the negative pole needle is connected to the second target wire end of the test loop, and the voltage signal between the first target wire end and the second target wire end is used as the output end signal of the target wire box (4) to connect to the data acquisition system (5); the detonation tester (1) is connected to the detonator or igniter of the pyrotechnic device; S2, after the output end of the pyrotechnic device works, the detonation tester (1) outputs a direct current signal and applies it to the pyrotechnic device, and the output end of the pyrotechnic device generates ionization to form various electrons and ions. The ionization signal is received by an ionization signal receiver (3) fixed to the output end of the pyrotechnic device by a screw sleeve (2), and the ionization signal is transmitted to the target wire box (4) through a wire. The target wire box converts the ionization signal into a voltage signal and transmits it to the data acquisition system (5), so as to realize the time from power-on to the output end of the pyrotechnic device working. The data acquisition system processes the voltage signal of the target wire box to obtain the current-time curve of the pyrotechnic device and the output voltage-time curve of the target wire box; The data acquisition system obtains the time from power-on to output operation of the pyrotechnic device according to the characteristic points of the current-time curve and the output voltage-time curve of the target wire box.

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