Automatic ignition performance testing system and method for electric ignition head type initiating explosive devices

Abstract

The invention discloses an automatic ignition performance test system and method for an electric ignition head type initiating explosive device, and the system carries out the monitoring of a current signal and an optical signal through a control test system which comprises a control module, a feeding and explosion-proof module, and a man-machine interaction module, completes the information interaction of ignition data, can adjust the ignition current of the electric ignition head type initiating explosive device, and achieves the automatic ignition performance of the electric ignition head type initiating explosive device. And the collected ignition test data are displayed, analyzed and processed, so that the problems of low test efficiency, relatively poor safety, relatively low manual operation quality reliability and the like in a pure manual ignition performance test of the electric ignition head type initiating explosive device are solved.

Description

Technical Field

[0001] The invention relates to an automatic ignition performance test system and method for initiators such as electric ignition heads, and belongs to the field of automatic ignition performance test design for initiators. Background Art

[0002] The main function of electric ignition head pyrotechnics is to activate various chemical batteries. Before such pyrotechnics are delivered from the factory, they need to be sampled and accepted, and the ignition performance test is the last step in the sampling and acceptance process. The ignition performance test process is to verify whether the ignition performance parameters of electric ignition head pyrotechnics meet the process technology requirements, and its requirements include:

[0003] (1) The bridge resistance of electric ignition head type pyrotechnic products before ignition shall meet the requirements of process technical documents;

[0004] (2) The ignition time of initiators such as electric ignition heads shall meet the requirements of the process technical documents;

[0005] (3) The minimum full ignition current of electric ignition head type pyrotechnics shall meet the requirements of process technical documents;

[0006] Regarding the above-mentioned ignition performance test content, the existing ignition performance test method is mainly a pure manual test, which requires three operators to be equipped during the test. During the ignition performance test, the three operators need to cooperate with each other to complete the preparation of the test system, the preparation of the product, the construction and debugging of the test system, the bridge resistance check before ignition, the product installation, the product ignition, and the data processing and analysis. The existing artificial ignition performance test method mainly has the following problems:

[0007] (1) Since manual testing is mainly done in series and cannot be performed crosswise, the testing efficiency is low;

[0008] (2) During the test, pyrotechnics such as electric ignition heads are passed between multiple operators, which can easily cause them to ignite accidentally due to static electricity, causing safety issues;

[0009] (3) During the testing process, it is necessary to manually record the product and process the ignition data, which can easily lead to recording errors due to human negligence and cause quality problems.

[0010] As the production of electric ignition heads and other explosive devices increases, the purely manual ignition performance test method can no longer meet the existing production needs. Therefore, it is necessary to study an automated ignition performance test method for electric ignition heads and other explosive devices to improve the ignition performance test efficiency of electric ignition heads and other explosive devices. Summary of the invention

[0011] The technical problem solved by the present invention is: in view of the problem of low efficiency in the ignition performance test of electric ignition head-type pyrotechnics in the current prior art, an automatic ignition performance test system and method for electric ignition head-type pyrotechnics are proposed.

[0012] The present invention solves the above technical problems by the following technical solutions:

[0013] An automatic ignition performance test system for electric ignition head type pyrotechnics, including a control module, a feeding and explosion-proof module, and a human-computer interaction module;

[0014] The control module is used to control the automatic loading and unloading of pyrotechnics such as electric ignition heads, measure the resistance of pyrotechnics such as electric ignition heads to obtain resistance data, and transmit the resistance data to the human-computer interaction module; monitor the ignition current signal and light signal in real time, adjust the ignition current of pyrotechnics such as electric ignition heads according to the signal data sent by the human-computer interaction module to realize the ignition of pyrotechnics such as electric ignition heads, and transmit the monitoring data to the human-computer interaction module; send control instructions and signal data to the loading and explosion-proof module for ignition control of pyrotechnics such as electric ignition heads;

[0015] The feeding and explosion-proof module realizes the combined state or separated state of the explosion-proof box according to the control instructions sent by the control module, and realizes the feeding control and ignition control of the internal electric ignition head type pyrotechnics according to the signal data sent by the control module;

[0016] The human-computer interaction module sends control instructions to the control module according to user needs, adjusts the ignition current, receives the ignition data returned by the control module and displays and analyzes it; receives monitoring data for analysis and processing, automatically interprets the data of pyrotechnics such as electric ignition heads and ignition current, and generates test data analysis results based on the interpretation results.

[0017] The control module includes a resistance measuring unit, a constant current output unit, a programmable logic control unit, a motor drive unit, a data acquisition unit and a control loop;

[0018] The programmable logic control unit is connected to the motor drive unit and is used to control the automatic loading and unloading of pyrotechnics such as electric ignition heads; the measuring end of the resistance measuring unit is connected to the control circuit to measure the resistance of pyrotechnics such as electric ignition heads; the communication end of the resistance measuring unit is connected to the programmable logic controller to realize the transmission of resistance data; the output end of the constant current output unit is connected to the control circuit, and the ignition control instruction is sent to the loading and explosion-proof module through the control circuit to realize the ignition of pyrotechnics such as electric ignition heads; the communication end of the constant current output unit is connected to the programmable logic controller to adjust the ignition current, and the collection end of the data collection unit is respectively connected to the control circuit and the loading and explosion-proof module to perform real-time monitoring of the ignition current and the optical signal according to the monitoring data; the communication end of the collection unit is connected to the human-computer interaction module through a USB data cable to transmit the monitoring data to the human-computer interaction module; the programmable logic controller is connected to the human-computer interaction module through a network cable to realize the transmission of control parameters and resistance data.

[0019] The ignition current is preset according to the control parameters transmitted from the human-machine interaction module to the programmable logic controller, and the human-machine interaction module sends the adjustment instruction to the programmable logic controller according to the monitoring data to adjust the ignition current.

[0020] The loading and explosion-proof module includes a product installation base, a slide, a semi-enclosed explosion-proof box and a photoelectric sensor, and pyrotechnics such as electric ignition heads. The product installation base is fixed on the slide, and the semi-enclosed explosion-proof box is arranged at the end of the slide. When the slide is in the initial position, the product installation base and the semi-enclosed explosion-proof box are in a separated state. When the product installation base is translated and the loading is completed, the product installation base and the semi-enclosed explosion-proof box form a combined state. The combined state is a complete non-sealed explosion-proof box. Pyrotechnics such as electric ignition heads are arranged in the complete non-sealed explosion-proof box, and ignition is completed after receiving the ignition command.

[0021] A quick clamping tool is installed above the product installation base, which is used to realize the quick clamping of pyrotechnics such as electric ignition heads. A control circuit contact tool is installed above the product installation base; when the product installation base and the semi-enclosed explosion-proof box are in a separated state, the control circuit contact tool realizes the short-circuit effect of the product; when the product installation base and the semi-enclosed explosion-proof box are in a combined state, it is used to realize the mutual conduction effect between the product and the control circuit.

[0022] The human-computer interaction module includes an industrial computer and a control combination. The industrial computer is used to send control instructions and signal data, receive monitoring data for analysis and processing, automatically interpret data on pyrotechnic products such as electric ignition heads and ignition current, and generate test data analysis results based on the interpretation results; at the same time, it sends control instructions to the control module according to user needs, adjusts the ignition current, receives ignition data returned by the control module, and displays and analyzes it.

[0023] The control combination includes a start button, an emergency stop button, a delete button, and a modify button. The start button is used to send a start signal, the emergency stop button is used to send an emergency stop signal, the delete button is used to send a delete data signal, and the modify button is used to send a delete data signal.

[0024] The industrial computer runs host computer software, which is used to set the ignition current and adjust the ignition current through the host computer software, receive monitoring data sent by the programmable logic controller, and realize the display of the ignition current curve, the photoelectric signal curve, and the product resistance value; after analyzing and processing the collected curve data, the ignition time and ignition current of the pyrotechnic product are automatically judged, and the test data analysis table is automatically generated according to the judgment result for the user to read.

[0025] The host computer software is developed based on C language, and the ignition time of the initiator is the difference between the curve mutation characteristic point in the photoelectric signal curve and the curve mutation characteristic point in the ignition current curve.

[0026] A test method implemented by an automated ignition performance test system, comprising:

[0027] Manually enter the pyrotechnic product information automatically. After the information is entered successfully, install the pyrotechnic product such as the electric ignition head on the quick installation clip on the product installation base. If the information entry fails, click on the manual entry product number to manually enter the product information through the host computer software running on the industrial computer;

[0028] After pressing the start button of the human-machine interaction module, the control module will control the loading and explosion-proof module's product installation base to perform translation loading action; when reaching the in-position detection photoelectric switch, the translation will stop, completing the in-position status detection before ignition;

[0029] When the control module receives the in-place state, it switches one by one in accordance with the short circuit state, the resistance test state and the ignition state through the control loop. When the control loop switches to the resistance test state, the resistance measurement unit in the control module completes the line resistance detection; when the control loop switches to the ignition state, the constant current output unit in the control module outputs a constant DC current as the preset ignition current;

[0030] After ignition, during the detonation process, the photoelectric sensor of the loading and explosion-proof module detects the light signal generated during the detonation of the pyrotechnic in real time, and the ignition current signal is monitored in real time through the resistor in the control loop;

[0031] When the constant current output unit starts to output current, it will switch back to the short-circuit state through the control circuit inside the control module within the preset time, and control the loading and explosion-proof module product installation base to move the material to the initial position, and stop moving when it reaches the initial detection photoelectric switch, completing the initial state detection;

[0032] During the material cutting process, the measured line resistance and the monitored optical and current signals are collected and sent to the host computer of the human-computer interaction module for data analysis and processing, and the host computer automatically generates a data table for download.

[0033] The advantages of the present invention compared with the prior art are:

[0034] (1) The present invention provides an automated ignition performance test system and method for electric ignition head-type pyrotechnics. Through information exchange of ignition data, monitoring of current signals and optical signals, and analysis and processing of ignition test data, the automated ignition performance test of electric ignition head-type pyrotechnics is realized. Compared with the existing manual ignition performance test, the number of personnel required for the test position is reduced by 2, and the test efficiency is increased by 2 times. The automatic interpretation of the ignition performance test data is realized. Compared with the existing manual interpretation, the quality risk caused by the empirical interpretation of personnel is avoided.

[0035] (2) The loading explosion-proof module in the present invention realizes the automatic loading of pyrotechnics such as electric ignition heads. Compared with the existing manual loading process, it avoids the safety risks caused by human misoperation. At the same time, it realizes the automated ignition performance test of pyrotechnics such as electric ignition heads for the first time, which can provide a reference for the automated ignition performance test of other types of pyrotechnics. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the automated ignition performance testing system provided for the invention;

[0037] Figure 2 A control circuit schematic diagram of the control module provided for the invention;

[0038] Figure 3 Structural diagram of the feeding and explosion-proof modules provided for the invention;

[0039] Figure 4 A schematic diagram of the host computer control provided for the invention; DETAILED DESCRIPTION

[0040] The invention discloses an automated ignition performance test system and method for pyrotechnics such as electric ignition heads. The system monitors current signals and optical signals through a control test system including a control module, a feeding and explosion-proof module, and a human-computer interaction module, completes information exchange of ignition data, and can adjust the ignition current of pyrotechnics such as electric ignition heads, and displays, analyzes, and processes the collected ignition test data, thereby solving the problems of low test efficiency, poor safety, and low reliability of manual operation quality of pyrotechnics such as electric ignition heads in purely manual ignition performance tests.

[0041] The automatic ignition performance test system for electric ignition heads and other explosive devices includes a control module, a feeding and explosion-proof module, and a human-computer interaction module;

[0042] The control module is used to control the automatic loading and unloading of pyrotechnics such as electric ignition heads, measure the resistance of pyrotechnics such as electric ignition heads to obtain resistance data, and transmit the resistance data to the human-computer interaction module; monitor the ignition current signal and light signal in real time, adjust the ignition current of pyrotechnics such as electric ignition heads according to the signal data sent by the human-computer interaction module to realize the ignition of pyrotechnics such as electric ignition heads, and transmit the monitoring data to the human-computer interaction module; send control instructions and signal data to the loading and explosion-proof module for ignition control of pyrotechnics such as electric ignition heads;

[0043] The feeding and explosion-proof module realizes the combined state or separated state of the explosion-proof box according to the control instructions sent by the control module, and realizes the feeding control and ignition control of the internal electric ignition head type pyrotechnics according to the signal data sent by the control module;

[0044] The human-computer interaction module sends control instructions to the control module according to user needs, adjusts the ignition current, receives the ignition data returned by the control module and displays and analyzes it; receives monitoring data for analysis and processing, automatically interprets the data of pyrotechnics such as electric ignition heads and ignition current, and generates test data analysis results based on the interpretation results.

[0045] The control module includes a resistance measurement unit, a constant current output unit, a programmable logic control unit, a motor drive unit, a data acquisition unit and a control loop;

[0046] The programmable logic control unit is connected to the motor drive unit and is used to control the automatic loading and unloading of pyrotechnics such as electric ignition heads; the measuring end of the resistance measuring unit is connected to the control circuit to measure the resistance of pyrotechnics such as electric ignition heads; the communication end of the resistance measuring unit is connected to the programmable logic controller to realize the transmission of resistance data; the output end of the constant current output unit is connected to the control circuit, and the ignition control instruction is sent to the loading and explosion-proof module through the control circuit to realize the ignition of pyrotechnics such as electric ignition heads; the communication end of the constant current output unit is connected to the programmable logic controller to adjust the ignition current, and the collection end of the data collection unit is respectively connected to the control circuit and the loading and explosion-proof module to perform real-time monitoring of the ignition current and the optical signal according to the monitoring data; the communication end of the collection unit is connected to the human-computer interaction module through a USB data cable to transmit the monitoring data to the human-computer interaction module; the programmable logic controller is connected to the human-computer interaction module through a network cable to realize the transmission of control parameters and resistance data.

[0047] The ignition current is preset according to the control parameters transmitted from the human-machine interaction module to the programmable logic controller. The human-machine interaction module sends the adjustment instructions to the programmable logic controller according to the monitoring data to adjust the ignition current.

[0048] The loading and explosion-proof module includes a product installation base, a slide, a semi-enclosed explosion-proof box and a photoelectric sensor, as well as pyrotechnics such as electric ignition heads. The product installation base is fixed on the slide, and the semi-enclosed explosion-proof box is arranged at the end of the slide. When the slide is in the initial position, the product installation base and the semi-enclosed explosion-proof box are in a separated state. When the product installation base is translated and the loading is completed, the product installation base and the semi-enclosed explosion-proof box form a combined state. The combined state is a complete non-sealed explosion-proof box. Explosive devices such as electric ignition heads are arranged in the complete non-sealed explosion-proof box, and ignition is completed after receiving the ignition command.

[0049] A quick clamping tool is installed above the product installation base, which is used to realize the quick clamping of pyrotechnics such as electric ignition heads. A control circuit contact tool is installed above the product installation base; when the product installation base and the semi-enclosed explosion-proof box are in a separated state, the control circuit contact tool realizes the short-circuit effect of the product; when the product installation base and the semi-enclosed explosion-proof box are in a combined state, it is used to realize the mutual conduction effect between the product and the control circuit.

[0050] The human-computer interaction module includes an industrial computer and a control combination. The industrial computer is used to send control instructions and signal data, receive monitoring data for analysis and processing, automatically interpret data on pyrotechnics such as electric ignition heads and ignition current, and generate test data analysis results based on the interpretation results. At the same time, it sends control instructions to the control module according to user needs, adjusts the ignition current, receives ignition data returned by the control module, and displays and analyzes it.

[0051] The control combination includes a start button, an emergency stop button, a delete button, and a modify button. The start button is used to send a start signal, the emergency stop button is used to send an emergency stop signal, the delete button is used to send a delete data signal, and the modify button is used to send a delete data signal.

[0052] The industrial computer runs host computer software, which is used to set the ignition current and adjust the ignition current through the host computer software, receive the monitoring data sent by the programmable logic controller, and display the ignition current curve, photoelectric signal curve, and product resistance value; after analyzing and processing the collected curve data, the ignition time and ignition current of the pyrotechnic product can be automatically judged, and the test data analysis table is automatically generated according to the judgment results for users to read.

[0053] The upper computer software is developed based on C language. The ignition time of the initiator is the difference between the curve mutation characteristic point in the photoelectric signal curve and the curve mutation characteristic point in the ignition current curve.

[0054] The test method implemented by the automated ignition performance test system has the following specific procedures:

[0055] Manually enter the pyrotechnic product information automatically. After the information is entered successfully, install the pyrotechnic product such as the electric ignition head on the quick installation clip on the product installation base. If the information entry fails, click on the manual entry product number to manually enter the product information through the host computer software running on the industrial computer;

[0056] After pressing the start button of the human-machine interaction module, the control module will control the loading and explosion-proof module's product installation base to perform translation loading action; when reaching the in-position detection photoelectric switch, the translation will stop, completing the in-position status detection before ignition;

[0057] When the control module receives the in-place state, it switches one by one in accordance with the short circuit state, the resistance test state and the ignition state through the control loop. When the control loop switches to the resistance test state, the resistance measurement unit in the control module completes the line resistance detection; when the control loop switches to the ignition state, the constant current output unit in the control module outputs a constant DC current as the preset ignition current;

[0058] After ignition, during the detonation process, the photoelectric sensor of the loading and explosion-proof module detects the light signal generated during the detonation of the pyrotechnic in real time, and the ignition current signal is monitored in real time through the resistor in the control loop;

[0059] When the constant current output unit starts to output current, it will switch back to the short-circuit state through the control circuit inside the control module within the preset time, and control the loading and explosion-proof module product installation base to move the material to the initial position, and stop moving when it reaches the initial detection photoelectric switch, completing the initial state detection;

[0060] During the material cutting process, the measured line resistance and the monitored optical and current signals are collected and sent to the host computer of the human-computer interaction module for data analysis and processing, and the host computer automatically generates a data table for download.

[0061] The following is further described in conjunction with the accompanying drawings and preferred embodiments of the specification:

[0062] In the current embodiment, if Figure 1 As shown, the automatic ignition performance test method of electric ignition head type pyrotechnics includes a control module, a feeding and explosion-proof module, and a human-computer interaction module. The overall steps include:

[0063] Step 1: Manually operate the scanner gun of the human-computer interaction module to automatically enter the pyrotechnic product information. After the information is successfully entered, install the pyrotechnic product on the quick installation clip 5 on the product installation base. If the automatic information entry fails, click the manual entry product number 14 through the host computer software running in the industrial computer to manually enter the product information.

[0064] Step 2: After manually pressing the start button of the human-machine interaction module, the control module will control the product installation base 1 of the loading and explosion-proof module to perform translation loading. During the loading process, the product installation base will reduce the loading speed when passing the loading deceleration photoelectric switch 9, and will stop translation when reaching the in-position detection photoelectric switch 10, completing the in-position state detection before ignition.

[0065] Step 3: When the control module receives the in-place status, the control circuit inside the control module will switch one by one according to the short circuit state, resistance test state, and ignition state. When the control circuit switches to the resistance test state, the resistance measurement unit in the control module completes the line resistance detection. When the control circuit switches to the ignition state, the constant current output unit in the control module will output a constant DC current, and use this current to complete the detonation of the pyrotechnics.

[0066] Step 4: During the product detonation process, the photoelectric sensor 4 of the loading and explosion-proof module detects the light signal generated during the detonation of the pyrotechnic product in real time, and the 1Ω resistor in the control loop is used to monitor the ignition current signal in real time.

[0067] Step 5: After the constant current output unit starts to output current in step 3, after a certain period of time, the control circuit inside the control module will switch back to the short-circuit state, and control the product mounting base 1 of the loading and explosion-proof module to move the material to the initial position. During the material removal process, the product mounting base will reduce the material removal speed when passing the material removal deceleration photoelectric switch 8, and will stop moving when reaching the initial detection photoelectric switch 7 to complete the initial state detection.

[0068] Step 6: During the material cutting process, the line resistance measured in step 3 and the optical signal and current signal monitored in step 4 will be sent to the host computer of the human-computer interaction module for data analysis and processing, and the host computer will automatically generate a data table for download.

[0069] like Figure 1As shown, the control module includes a resistance measuring unit, a constant current output unit, a programmable logic control unit, a motor drive unit, a data acquisition unit and a control loop. Among them, the programmable logic control unit is connected to the motor drive unit, and the motor drive unit is connected to the slide 2 of the feeding and explosion-proof control unit, which is used to control the automatic loading and unloading of electric ignition head-type pyrotechnics; the measuring end of the resistance measuring unit is connected to the control loop to realize the resistance measurement function of electric ignition head-type pyrotechnics, and the communication end of the resistance measuring unit is connected to the programmable logic controller to realize the transmission of resistance data. The output end of the constant current output unit is connected to the control loop to realize the ignition function of electric ignition head-type pyrotechnics; the communication end of the constant current output unit is connected to the programmable logic controller to realize the adjustment of the ignition current. The acquisition end of the data acquisition unit is respectively connected to the 1Ω resistor of the control loop and the photoelectric sensor of the feeding and explosion-proof module to realize the real-time monitoring of the ignition current and light signal; the communication end of the acquisition unit is connected to the industrial computer through a USB data cable to realize the function of transmitting the monitoring signal to the industrial computer. The programmable logic control is connected to the industrial computer through a network cable to realize the transmission of control parameters and resistance data.

[0070] The control parameters are the ignition current size 17, the ignition current median 20 and the ignition current step 21 set in the host computer.

[0071] Control loop such as Figure 2 As shown, it includes a voltage regulator, a constant current output unit, a constant current output relay, a short circuit relay, a loop control relay, a 1Ω sampling resistor, a resistance measurement unit, a function switching relay, a control end contact, a product short circuit switch, a product end contact, and a quick clamping tool. Figure 3 As shown, it includes two types of contacts and one type of clamping fixture; the voltage regulator is connected to the constant current output unit through the power output relay to provide the voltage required for the normal operation of the constant current output unit. The positive pole of the constant current output unit is connected to the constant current output relay (positive pole), followed by the loop control relay, 1Ω sampling resistor, function switching relay (positive pole), and finally connected to the control terminal contact (+); the negative pole of the constant current output unit is connected to the constant current output relay (negative pole), followed by the function switching relay (negative pole), and finally connected to the control terminal contact (-).

[0072] The two ends of the 1Ω sampling resistor are respectively connected to the measuring ends of the data acquisition unit to realize real-time monitoring of the current in the control loop.

[0073] The resistance measuring unit has two ends connected to the function switching relay (negative pole) and the function switching relay (positive pole) respectively, so as to realize the line resistance measurement in the control loop.

[0074] The function switching signal of the function switching relay is provided by the programmable logic control to realize the function switching of the control loop between the ignition state (or short circuit state) and the resistance measurement state.

[0075] The short-circuit relay is connected in parallel to the output end of the output relay (positive pole) and the output end of the constant current output relay (negative pole), and is in a normally closed state by default, ensuring that the control circuit on the product end is always in a short-circuit state.

[0076] The control terminal contact 11 is installed at the end of the semi-enclosed explosion-proof box of the feeding and explosion-proof module.

[0077] The product end contact 6 is installed above the product installation base 1 and connected to the quick clamping fixture 5. At the same time, a product short-circuit switch is connected in parallel at both ends of the quick clamping fixture 5, which is in a normally closed state by default, ensuring that the product is always in a short-circuit state before the product installation base 1 is loaded.

[0078] like Figure 3 As shown, the feeding and explosion-proof module includes a product mounting base 1, a slide 2, a semi-enclosed explosion-proof box 3, a photoelectric sensor 4, a quick clamping tool 5, a product end contact 6, an initial detection photoelectric switch 7, a unloading deceleration photoelectric switch 8, a loading deceleration photoelectric switch 9, an in-position detection photoelectric switch 10, and a control end contact 11.

[0079] The product mounting base 1 is fixed on the slide table 2 .

[0080] The semi-enclosed explosion-proof box 3 is located at the end of the slide and is not connected to the slide.

[0081] The photoelectric sensor 4 is installed at the top of the semi-enclosed explosion-proof box 3. The signal receiving end of the photoelectric sensor 4 should be aligned with the top opening of the semi-enclosed explosion-proof box 3, and a transparent protective glass sheet should be installed at the connection.

[0082] The quick clamping tool 5 is fixed above the product installation base 1, and the quick clamping tool 5 can realize the quick clamping and installation of pyrotechnic products such as electric ignition heads.

[0083] The product end contact 6 is fixed above the product mounting base 1 and is located next to the quick clamping fixture 5 .

[0084] The initial detection photoelectric switch 7 is located on the left side of the slide;

[0085] The material unloading deceleration photoelectric switch 8 is located on the right side of the initial detection photoelectric switch 7;

[0086] The material loading deceleration photoelectric switch 9 is located on the right side of the slide;

[0087] The in-position detection photoelectric switch 10 is located on the right side of the loading deceleration photoelectric switch 9;

[0088] The control terminal contact 11 is fixed to the tail of the semi-enclosed explosion-proof box 3 and is connected to the rest of the control circuit through a cable. Figure 2 shown.

[0089] When the product installation base 1 is at the initial position of the slide, the product installation base and the semi-enclosed explosion-proof box are in a separated state, and at this time, the product short-circuit switches connected in parallel at both ends of the quick clamping tooling 5 are always in a closed state.

[0090] When the product installation base 1 moves to the right to complete the loading action, the product installation base 1 and the semi-enclosed explosion-proof box 3 will form a combined state, which constitutes a complete but non-sealed explosion-proof box. At this time, the product short-circuit switch connected in parallel at both ends of the quick clamping tooling 5 will be disconnected, and the product end contact 6 will contact the control end contact 11, so that the product is connected to the control loop. After the product is connected to the control loop, the programmable logic controller operates the control loop to switch one by one between the short-circuit state, the resistance test state, and the ignition state. At the same time, the industrial computer will communicate with the programmable logic controller through the network cable to complete the interaction of control parameters and collected data.

[0091] The human-computer interaction module includes a start button, an emergency stop button, a delete button, a modify button, and an industrial computer. The start button is connected to the programmable controller to send a start signal; the emergency stop button is connected to the programmable controller to send an emergency stop signal; the delete button is connected to the programmable controller to send a delete data signal, and the modify button is connected to the programmable controller to send a delete data signal; the industrial computer is connected to the programmable logic controller via a network cable to complete the interaction of control parameters and collected data; the industrial computer is connected to the data acquisition unit via a USB cable to realize the interaction of collected data.

[0092] The industrial computer runs Figure 4 The upper computer software shown. Before the operator presses the start button, the upper computer software needs to determine the control module connection status 13. After the status connection is normal, it is necessary to press the zero line resistance calibration 23 function, and then the product's ignition current 17, median current 18, 20 and current step 9, 21 can be set, and the process number 22 of the current ignition performance test can be selected.

[0093] When the above preparations are ready, the operator automatically enters the product information through the barcode scanner of the human-computer interaction module. If the entry is successful, there will be a prompt sound. If the automatic entry fails, the product information can be entered manually by entering the product number 14 option. After the product information is successfully entered, the green light of the start button lights up. At this time, the operator can install the electric ignition head and other pyrotechnics on the quick clamping tooling 5 and press the start button. After the product ignition is completed, the upper computer software will display the ignition current curve 30, the photoelectric signal curve 29, the actual ignition current 28, the actual ignition time 27, the product resistance value 16, the ignition data statistics 25 and the ignition test data table 24. After the ignition performance test is completed, the test data table can be downloaded through the download current process data 15 option.

[0094] The ignition time of the initiator is the difference between the curve mutation characteristic point in the photoelectric signal curve and the curve mutation characteristic point in the ignition current curve.

[0095] Based on the above-mentioned optimal embodiment, an automated ignition performance testing method for pyrotechnics such as electric ignition heads can be realized. The method of the present invention can replace the existing manual ignition performance testing method, thereby achieving the purpose of increasing the test efficiency by 2 times and reducing the labor cost by 2 people. The method of the present invention can also avoid safety risks caused by human misoperation and quality risks caused by human empirical interpretation of test data.

[0096] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0097] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. An automatic ignition performance test system for electric ignition head type initiators, characterized by: Including control module, feeding and explosion-proof module, human-computer interaction module; The control module is used to control the automatic loading and unloading of pyrotechnics such as electric ignition heads, measure the resistance of pyrotechnics such as electric ignition heads to obtain resistance data, and transmit the resistance data to the human-computer interaction module; monitor the ignition current signal and light signal in real time, adjust the ignition current of pyrotechnics such as electric ignition heads according to the signal data sent by the human-computer interaction module to realize the ignition of pyrotechnics such as electric ignition heads, and transmit the monitoring data to the human-computer interaction module; send control instructions and signal data to the loading and explosion-proof module for ignition control of pyrotechnics such as electric ignition heads; The feeding and explosion-proof module realizes the combined state or separated state of the explosion-proof box according to the control instructions sent by the control module, and realizes the feeding control and ignition control of the internal electric ignition head type pyrotechnics according to the signal data sent by the control module; The human-computer interaction module sends control instructions to the control module according to user needs, adjusts the ignition current, receives the ignition data returned by the control module and displays and analyzes it; receives monitoring data for analysis and processing, automatically interprets the data of pyrotechnics such as electric ignition heads and ignition current, and generates test data analysis results based on the interpretation results.

2. The automatic ignition performance test system of an electric ignition head type initiator according to claim 1 is characterized in that: The control module includes a resistance measuring unit, a constant current output unit, a programmable logic control unit, a motor drive unit, a data acquisition unit and a control loop; The programmable logic control unit is connected to the motor drive unit and is used to control the automatic loading and unloading of pyrotechnics such as electric ignition heads; the measuring end of the resistance measuring unit is connected to the control circuit to measure the resistance of pyrotechnics such as electric ignition heads; the communication end of the resistance measuring unit is connected to the programmable logic controller to realize the transmission of resistance data; the output end of the constant current output unit is connected to the control circuit, and the ignition control instruction is sent to the loading and explosion-proof module through the control circuit to realize the ignition of pyrotechnics such as electric ignition heads; the communication end of the constant current output unit is connected to the programmable logic controller to adjust the ignition current, and the collection end of the data collection unit is respectively connected to the control circuit and the loading and explosion-proof module to perform real-time monitoring of the ignition current and the optical signal according to the monitoring data; the communication end of the collection unit is connected to the human-computer interaction module through a USB data cable to transmit the monitoring data to the human-computer interaction module; the programmable logic controller is connected to the human-computer interaction module through a network cable to realize the transmission of control parameters and resistance data.

3. The automatic ignition performance test system of an electric ignition head type initiator according to claim 2 is characterized in that: The ignition current is preset according to the control parameters transmitted from the human-machine interaction module to the programmable logic controller, and the human-machine interaction module sends the adjustment instruction to the programmable logic controller according to the monitoring data to adjust the ignition current.

4. The automatic ignition performance test system of an electric ignition head type initiator according to claim 1 is characterized in that: The loading and explosion-proof module includes a product installation base, a slide, a semi-enclosed explosion-proof box and a photoelectric sensor, and pyrotechnics such as electric ignition heads. The product installation base is fixed on the slide, and the semi-enclosed explosion-proof box is arranged at the end of the slide. When the slide is in the initial position, the product installation base and the semi-enclosed explosion-proof box are in a separated state. When the product installation base is translated and the loading is completed, the product installation base and the semi-enclosed explosion-proof box form a combined state. The combined state is a complete non-sealed explosion-proof box. Pyrotechnics such as electric ignition heads are arranged in the complete non-sealed explosion-proof box, and ignition is completed after receiving the ignition command.

5. The automatic ignition performance test system of an electric ignition head type initiator according to claim 4 is characterized in that: A quick clamping tool is installed above the product installation base, which is used to realize the quick clamping of pyrotechnics such as electric ignition heads. A control circuit contact tool is installed above the product installation base; when the product installation base and the semi-enclosed explosion-proof box are in a separated state, the control circuit contact tool realizes the short-circuit effect of the product; when the product installation base and the semi-enclosed explosion-proof box are in a combined state, it is used to realize the mutual conduction effect between the product and the control circuit.

6. The automatic ignition performance test system of an electric ignition head type initiator according to claim 1 is characterized in that: The human-computer interaction module includes an industrial computer and a control combination. The industrial computer is used to send control instructions and signal data, receive monitoring data for analysis and processing, automatically interpret data on pyrotechnic products such as electric ignition heads and ignition current, and generate test data analysis results based on the interpretation results; at the same time, it sends control instructions to the control module according to user needs, adjusts the ignition current, receives ignition data returned by the control module, and displays and analyzes it.

7. The automatic ignition performance test system of an electric ignition head type initiator according to claim 1 is characterized in that: The control combination includes a start button, an emergency stop button, a delete button, and a modify button. The start button is used to send a start signal, the emergency stop button is used to send an emergency stop signal, the delete button is used to send a delete data signal, and the modify button is used to send a delete data signal.

8. The automatic ignition performance test system of an electric ignition head type initiator according to claim 7 is characterized by: The industrial computer runs host computer software, which is used to set the ignition current and adjust the ignition current through the host computer software, receive monitoring data sent by the programmable logic controller, and realize the display of the ignition current curve, the photoelectric signal curve, and the product resistance value; after analyzing and processing the collected curve data, the ignition time and ignition current of the pyrotechnic product are automatically judged, and the test data analysis table is automatically generated according to the judgment result for the user to read.

9. The automatic ignition performance test system of an electric ignition head type initiator according to claim 8 is characterized in that: The upper computer software is developed based on C language, and the ignition time of the initiator is the difference between the curve mutation characteristic point in the photoelectric signal curve and the curve mutation characteristic point in the ignition current curve.

10. A test method implemented by the automatic ignition performance test system according to claim 9, characterized in that include: Manually enter the pyrotechnic product information automatically. After the information is entered successfully, install the pyrotechnic product such as the electric ignition head on the quick installation clip on the product installation base. If the information entry fails, click on the manual entry product number to manually enter the product information through the host computer software running on the industrial computer; After pressing the start button of the human-machine interaction module, the control module will control the loading and explosion-proof module's product installation base to perform translation loading action; when reaching the in-position detection photoelectric switch, the translation will stop, completing the in-position status detection before ignition; When the control module receives the in-place state, it switches one by one in accordance with the short circuit state, the resistance test state and the ignition state through the control loop. When the control loop switches to the resistance test state, the resistance measurement unit in the control module completes the line resistance detection; when the control loop switches to the ignition state, the constant current output unit in the control module outputs a constant DC current as the preset ignition current; After ignition, during the detonation process, the photoelectric sensor of the loading and explosion-proof module detects the light signal generated during the detonation of the pyrotechnic in real time, and the ignition current signal is monitored in real time through the resistor in the control loop; When the constant current output unit starts to output current, it will switch back to the short-circuit state through the control circuit inside the control module within the preset time, and control the loading and explosion-proof module product installation base to move the material to the initial position, and stop moving when it reaches the initial detection photoelectric switch, completing the initial state detection; During the material cutting process, the measured line resistance and the monitored optical and current signals are collected and sent to the host computer of the human-computer interaction module for data analysis and processing, and the host computer automatically generates a data table for download.

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