Synchronous triggering device

Abstract

The invention discloses a synchronous triggering device, and relates to the technical field of explosion signal acquisition, the device comprises a button module, a microprocessor system, an acquisition module and a triggering module, the button module, the acquisition module and the triggering module are all connected with the microprocessor system; the acquisition module is used for acquiring an explosion signal of an explosion point; the trigger module comprises a plurality of channels, and each channel is connected with an input / output port of the microprocessor system; the key module is used for setting synchronous trigger signal characteristics of each channel; and the microprocessor system is used for controlling the trigger module to output synchronous trigger signals of multiple channels according to the synchronous trigger signal characteristics of each channel after receiving the explosion signals acquired by the acquisition module. According to the invention, the device cost is reduced, and the response speed and the response reliability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of signal acquisition, and particularly to a synchronous triggering device. Background Art

[0002] At present, evaluating the damage of explosion shock loads to buildings, bridges, pipelines, underground works, etc. has become a research hotspot at home and abroad. For example: dynamic response analysis of reinforced concrete walls under explosion shock loads, research on simplified analysis models of frame columns, comparative analysis of two types of elastoplastic damage constitutive models of concrete materials, research on the impact response and failure of cylindrical shell structures, etc. In the process of these studies, it is first necessary to detect the strain, deformation, damage and destruction of building structures under various explosion shocks (different amounts of explosives, different detonation points, different explosion distances, etc.), and it is necessary to use multiple features and multiple devices (impact test equipment, stress-strain test systems, high-speed cameras, etc.). Moreover, the explosion duration is short (the rising front of the explosion signal is a few microseconds, and the action time of the entire waveform is dozens to one hundred microseconds), the test environment is complex and demanding (explosion towers, shooting ranges or no-go areas, etc.), there are many involved personnel (detonation group personnel, equipment group personnel, building structure personnel, etc.), the preparation time is long, and the test cost is high. Therefore, achieving fast and reliable explosion signal acquisition and synchronous testing of multiple features and multiple devices, that is, synchronous triggering of multiple devices, is one of the key problems to be solved first.

[0003] Existing test equipment for the strain, deformation, damage and destruction of building structures basically adopts the internal triggering method. However, a large number of experiments show that the external triggering method is significantly superior to the internal triggering method in terms of response speed, reliability and test cost. The external triggering method connects an external trigger signal to the independent trigger port of the test equipment, solving problems such as difficult setting of the internal trigger threshold, interference intrusion, and poor stability. The external triggering method can avoid: ① the test equipment does not trigger; ② the trigger time of the test equipment is delayed, and complete waveform data cannot be collected; ③ the test equipment is mis-triggered.

[0004] The literature "TNT Explosion Moment Acquisition and Storage System Based on FPGA and WSN" by Liu Shuanghong et al., the literature "Research on the Synchronous Trigger Test Method for Multi-point Pressures in the Gun Chamber" by Wang Yajun et al., the literature "Multi-parameter Synchronous Test of Interior Ballistics" by Pei Dongxing et al., the literature "Optoelectronic Test System for Large Equivalent Explosion Field Parameters with Multi-channel Synchronous Data Acquisition" by Liu Xiu et al., and the literature "Design of Real-time Velocity Measurement Synchronous Trigger for Ballistic Measurement" by Tian Hui et al. utilize optoelectronic and fiber optic sensors to sense the firelight generated during gunpowder explosion to achieve explosion signal acquisition. The key to their explosion signal acquisition lies in the capture, effective transmission of optical signals, reliable and efficient conversion of optoelectronic signals, and the stable operation of the system control circuit. Since optical signals can only transmit very small power, the converted electrical signals must be amplified, filtered, noise-reduced, etc. to meet the acquisition requirements. Therefore, the explosion signal acquisition of the "explosion-light" model has disadvantages such as high hardware cost and complex structure.

[0005] The literature "Development of an Online Data Acquisition System for Explosive Detection" by Zheng Pu et al. uses the associated particle technique to measure prompt gamma-ray spectra and analyze the elemental composition of the object under test to determine whether it is a suspicious explosive. For explosion signals, it requires complex circuit structures and complex recognition algorithms, and has disadvantages such as high hardware cost and slow response speed.

[0006] The literature "Research on Synchronous Trigger of Different Instrument Buses in a Parallel Test System" by Cheng Siyi et al. uses 8 independent multi-point low-voltage differential trigger lines and combines a star / daisy-chain hybrid connection method to achieve synchronous trigger of bus instruments. For synchronous trigger, it has disadvantages such as high hardware cost and complex structure.

[0007] The literature "High-precision Multi-channel Synchronous Sampling System" by Han Haian et al. is used for the operation and maintenance of intelligent substation equipment for online monitoring. For external trigger signals, it is based on blind sampling + DSP data processing, and has disadvantages such as high hardware cost and slow response speed.

[0008] The literature "High-speed Camera Remote Synchronous Trigger System" by Di Xing et al. The trigger signal transmitter collects external trigger button signals and transmits them to the trigger signal receiver through Ethernet to control the receiver to complete the remote synchronous trigger of multiple high-speed cameras. This system can only collect external trigger signals with button characteristics and cannot collect external trigger signals with explosion characteristics. Summary of the Invention

[0009] The object of the present invention is to provide a synchronous trigger device, which realizes synchronous trigger of multiple features and multiple channels, reduces the device cost, and improves the response speed and response reliability at the same time.

[0010] To achieve the above object, the present invention provides the following solution:

[0011] A synchronous triggering device, comprising: a key module, a microprocessor system, a collection module and a triggering module, wherein the key module, the collection module and the triggering module are all connected to the microprocessor system;

[0012] The collection module is used for collecting the explosion signal of the explosion point;

[0013] The triggering module includes a plurality of channels, and each channel is connected to an input / output port of the microprocessor system;

[0014] The key module is used for setting the synchronous triggering signal characteristics of each channel;

[0015] The microprocessor system is used for, after receiving the explosion signal collected by the collection module, controlling the triggering module to output a multi-channel synchronous triggering signal according to the synchronous triggering signal characteristics of each channel.

[0016] Optionally, the key module includes a first key, a second key, a third key and a fourth key all connected to the microprocessor system;

[0017] The first key is used for channel selection, the second key is used for setting the synchronous triggering signal characteristics of the channel selected by the first key, the third key is used for confirming the setting made by the second key, and the fourth key is used for starting and resetting the multi-channel synchronous triggering function.

[0018] Optionally, the synchronous triggering signal characteristics are a single-pulse synchronous triggering signal with a rising edge first and then a falling edge, or a single-pulse synchronous triggering signal with a falling edge first and then a rising edge.

[0019] Optionally, in the single-pulse synchronous triggering signal with a rising edge first and then a falling edge, the high level is maintained for 20 us, and in the single-pulse synchronous triggering signal with a falling edge first and then a rising edge, the low level is maintained for 20 us.

[0020] Optionally, the collection module includes a first enameled wire and a second enameled wire. One end of the first enameled wire and one end of the second enameled wire are placed under the explosive at the explosion point. The other end of the first enameled wire is grounded, and the other end of the second enameled wire is connected to the microprocessor system.

[0021] Optionally, each channel includes an electrostatic protector, and the transient suppression voltage range of the electrostatic protector is ±25 kV.

[0022] Optionally, the synchronization trigger device further includes a display module connected to the microprocessor system. The display module is used to display the synchronization trigger signal characteristics of each channel and the system operation status, where the system operation status includes parameter setting status, waiting for trigger status, and trigger completed status.

[0023] Optionally, the synchronization trigger device further includes an alarm module connected to the microprocessor system. The alarm module is used to give an audible alarm or a visual alarm when the acquisition module acquires the explosion signal.

[0024] The number of channels of the trigger module is 8.

[0025] The microprocessor system is a microprocessor, system on chip, digital signal processor, complex programmable logic device, field programmable gate array, or embedded system.

[0026] According to the specific embodiments provided by the present invention, the following technical effects are disclosed:

[0027] The trigger module of the present invention includes multiple channels, and each channel is connected to an input / output port of the microprocessor system; the synchronization trigger signal characteristics of each channel are set through the key module; after the microprocessor receives the explosion signal acquired by the acquisition module, it controls the trigger module to output multi-channel synchronization trigger signals according to the synchronization trigger signal characteristics of each channel. The whole device has a simple structure, is stable and reliable, has a low cost, a fast response, is easy to operate, and has a wide application range. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic structural diagram of a synchronization trigger device provided by an embodiment of the present invention;

[0030] Figure 2 It is a schematic connection diagram of the key module and the microprocessor system provided by an embodiment of the present invention;

[0031] Figure 3 It is a schematic connection diagram of the acquisition module and the microprocessor system provided by an embodiment of the present invention;

[0032] Figure 4 It is a schematic connection diagram of the trigger module and the microprocessor system provided by an embodiment of the present invention.

[0033] Symbol Explanation:

[0034] 1 - Button module, 2 - Display module, 3 - Microprocessor system, 4 - Acquisition module, 5 - Trigger module, 6 - Alarm module. Specific Embodiment

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] The purpose of the present invention is to provide a synchronous trigger device, which realizes synchronous triggering of multiple features and multiple channels, reduces the cost of the device, and improves the response speed and reliability of the response.

[0037] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] As Figure 1 shown, a synchronous trigger device provided by the present invention includes: a button module 1, a microprocessor system 3, an acquisition module 4, and a trigger module 5. The button module 1, the acquisition module 4, and the trigger module 5 are all connected to the microprocessor system 3.

[0039] The acquisition module 4 is used to acquire the explosion signal of the explosion point.

[0040] The trigger module 5 includes multiple channels, and each channel is connected to an input / output (IO) port of the microprocessor system.

[0041] The button module 1 is used to set the synchronous trigger signal characteristics of each channel.

[0042] The microprocessor is used to control the trigger module 5 to output a multi-channel synchronous trigger signal according to the synchronous trigger signal characteristics of each channel when receiving the explosion signal acquired by the acquisition module 4.

[0043] A synchronous trigger device provided by the present invention further includes a display module 2 connected to the microprocessor system 3. The display module 2 is used to display system parameters and the system operation status. The system operation status includes a parameter setting status, a waiting trigger status, and a trigger completed status.

[0044] The system parameters include 8 channels and the synchronous trigger signal characteristics of each channel.

[0045] The display module 2 includes a 1.14-inch TFT-OLED high-definition liquid crystal color screen.

[0046] A synchronous triggering device provided by the present invention further includes an alarm module 6 connected to the microprocessor system 3, and the alarm module 6 is used to implement sound alarm or light alarm.

[0047] The alarm module 6 is electrically connected to an IO port W1 of the microprocessor system 3 to implement prompts such as keys and system status.

[0048] The number of channels of the trigger module 5 is 8. Each channel includes an electrostatic protector (electrostatic protection ESD).

[0049] The trigger module 5 is composed of 8 IO ports PO1-PO8 of the microprocessor system 3, 8-channel electrostatic protection ESD1-ESD8, and multi-feature multi-channel synchronous trigger signals Out1-Out8 to realize the output of 8-channel synchronous trigger signals; PO1-PO8 are respectively electrically connected to ESD1-ESD8, and ESD1-ESD8 are respectively electrically connected to Out1-Out8, that is, IO port PO1, electrostatic protection ESD1, and synchronous trigger signal Out1 constitute the first synchronous trigger signal output channel, IO port PO2, electrostatic protection ESD2, and synchronous trigger signal Out2 constitute the second synchronous trigger signal output channel,..., IO port PO8, electrostatic protection ESD8, and synchronous trigger signal Out8 constitute the eighth synchronous trigger signal output channel; the transient suppression voltage range of each 1-channel electrostatic protection ESD in the 8-channel electrostatic protection ESD1-ESD8 is ±25 kV.

[0050] As Figure 2 shown, the key module 1 includes a first key K1, a second key K2, a third key K3, and a fourth key K4, all of which are connected to the microprocessor system 3.

[0051] The first key K1, the second key K2, the third key K3, and the fourth key K4 are all independent tactile keys, and the key module 1 realizes functions such as channel selection, trigger synchronization signal feature setting, parameter confirmation, and system startup reset.

[0052] The microprocessor judges the levels of 4 IO ports (respectively S1, S2, S3, and S4) connected between the key module 1 and the microprocessor system 3, that is, when S1 is at a low level, it is judged that K1 is pressed, when S2 is at a low level, it is judged that K2 is pressed, when S3 is at a low level, it is judged that K3 is pressed, when S4 is at a low level, it is judged that K4 is pressed, and when S1-S4 are all at a high level, it is judged that K1-K4 are not pressed, so as to realize key scanning.

[0053] The microprocessor system 3 is electrically connected to the display module 2 through a Serial Peripheral Interface (SPI) interface, and controls the display module 2 through the SPI interface to display system parameters, system operating status, etc.; the microprocessor system 3 determines the change in the level of an IO port PI1 connected to the acquisition module 4 and the microprocessor system 3, that is, the falling edge of the PI1 input is judged as an explosion, and other level changes of the PI1 input are judged as no explosion, so as to realize the acquisition of explosion signals; the microprocessor system 3 controls the levels output by 8 IO ports PO1-PO8 connected to the trigger module 5 and the microprocessor system 3 to control the multi-feature multi-channel synchronous trigger signals Out1-Out8; the microprocessor system 3 controls the high and low levels output by an IO port W1 connected to the alarm module 6 and the microprocessor system 3. When an explosion signal is acquired, multi-feature multi-channel synchronous trigger signals Out1-Out8 are output, or when the first button K1, the second button K2, the third button K3, and the fourth button K4 of the button module 1 are pressed, when W1 outputs a high level, the alarm module 6 generates an alarm prompt, otherwise when W1 outputs a low level, the alarm module 6 does not generate an alarm prompt.

[0054] The first button is used for channel selection, the second button is used for setting the characteristics of the synchronous trigger signal for the channel selected by the first button, the third button is used for confirming the setting made by the second button, and the fourth button is used for starting and resetting the multi-channel synchronous trigger function.

[0055] The characteristics of the synchronous trigger signal are a single-pulse synchronous trigger signal with a rising edge first and then a falling edge, or a single-pulse synchronous trigger signal with a falling edge first and then a rising edge.

[0056] In the single-pulse synchronous trigger signal with a rising edge first and then a falling edge, the high level is maintained for 20 us, and in the single-pulse synchronous trigger signal with a falling edge first and then a rising edge, the low level is maintained for 20 us.

[0057] The acquisition module 4 includes a first enameled wire and a second enameled wire. One end of the first enameled wire and one end of the second enameled wire are placed under the explosive at the explosion point. The other end of the first enameled wire is grounded, and the other end of the second enameled wire is connected to the microprocessor system 3. PI1 is electrically connected to the enameled wire special device to realize the acquisition of explosion signals.

[0058] The microprocessor system 3 is a microcontroller, a microprocessor, a system on a chip, a digital signal processor (DSP), a complex programmable logic device (CPLD), a field programmable gate array (FPGA), or an embedded system.

[0059] Such asFigure 2 As shown in the figure, the specific working process of the key module 1 is as follows:

[0060] The first key K1 realizes the function of selecting channels 1 to 8. After the system is powered on or reset, when the first key K1 is pressed for the first time, channel 1 is selected; when it is pressed for the second time, channel 2 is selected... when it is pressed for the eighth time, channel 8 is selected.

[0061] The second key K2 realizes the function of setting the characteristics of the synchronous trigger signal for 8 channels. After the channel is selected, when the second key K2 is pressed for the first time, a single-pulse synchronous trigger signal with a rising edge first and then a falling edge (high level maintained for 20 us) is set for the selected channel output; when the second key K2 is pressed for the second time, a single-pulse synchronous trigger signal with a falling edge first and then a rising edge (low level maintained for 20 us) is set for the selected channel output.

[0062] The third key K3 realizes the function of confirming the characteristics of 8 channels and their synchronous trigger signals. After the channel is selected and the characteristics of the synchronous trigger signal are set, when the third key K3 is pressed, the characteristics of the selected channel and its synchronous trigger signal are confirmed.

[0063] The fourth key K4 realizes the function of starting and resetting the system. After the characteristics of 8 channels and their synchronous trigger signals are confirmed, when the fourth key K4 is pressed for the first time, the synchronous trigger of 8 channels is enabled; when it is pressed for the second time, the synchronous trigger of 8 channels is reset, the display module 2 is reset, and the alarm module 6 is turned off.

[0064] As Figure 3 shown in the figure, the specific working process of the acquisition module 4 is as follows:

[0065] The two ends (designated as A1 and B1 respectively) of the first enameled wire A and the second enameled wire B are tied in a twist eight times and placed 20 cm directly below the explosive as the explosion signal induction point. The other end A2 of the first enameled wire A is grounded, and the other end B2 of the second enameled wire B is connected to an IO port PI1 of the microprocessor system 3. PI1 is pulled up through a resistor (the IO port of the microprocessor system 3 has an internal pull-up circuit integrated). When there is no explosion, PI1 is in a high-level state; when an explosion occurs, high temperature is generated instantaneously, melting the insulating paint on the outer surface of the enameled wire at the tied part, and the tied part of the two enameled wires (A1 and B1) conducts, grounding the B2 end of the enameled wire and inputting a falling edge to the PI1 port. The PI1 port uses the falling-edge interruption method, and the microprocessor system 3 enters the interruption service program. In the interruption service program, according to the trigger signal characteristics set by the key module 1 for 8 channels, the output levels of PO1 - PO8 are controlled to generate a single-pulse synchronous trigger signal with a rising edge first and then a falling edge (high level maintained for 20 us) or a single-pulse synchronous trigger signal with a falling edge first and then a rising edge (low level maintained for 20 us). The output signal characteristics of Out1 - Out8 are respectively consistent with the output signal characteristics of PO1 - PO8, thus realizing the output of multi-characteristic multi-channel synchronous trigger signals by the trigger module 5.

[0066] As Figure 4 shown, the working process of the trigger module 5 is as follows:

[0067] When the key module 1 sets a single-pulse synchronous trigger signal for Out1 with a rising edge first and then a falling edge (high level maintained for 20 us), the microprocessor system 3 controls the output level of PO1 to generate a single-pulse synchronous trigger signal with a rising edge first and then a falling edge (high level maintained for 20 us). The synchronous trigger signal is transmitted from PO1 to ESD1 and then from ESD1 to Out1. Out1 outputs a single-pulse synchronous trigger signal with a rising edge first and then a falling edge (high level maintained for 20 us), thereby controlling the external device connected to Out1 to achieve triggering; during the entire circuit operation, ESD1 will instantaneously suppress the signal of Out1 within the range of ±25 kV to the safe level of the IO port of the microprocessor system 3.

[0068] When the key module 1 sets a single-pulse synchronous trigger signal with a falling edge followed by a rising edge at Out1 (low level held for 20 μs), the microprocessor system 3 controls the output level of PO1 to generate a single-pulse synchronous trigger signal with a falling edge followed by a rising edge (low level held for 20 μs). The synchronous trigger signal is transmitted from PO1 to ESD1 and then through ESD1 to Out1, and Out1 outputs a single-pulse synchronous trigger signal with a falling edge followed by a rising edge (low level held for 20 μs), thereby controlling the external device connected to Out1 to achieve triggering; during the entire operation of the circuit, ESD1 will instantaneously suppress the signal at Out1 within the range of ±25 kV to the safe level of the IO port of the microprocessor system 3.

[0069] Similarly, the microprocessor system 3 controls the output level of PO2 to control the output level of Out2, achieving a synchronous trigger signal with the characteristics required for Out2 set by the key module 1, thereby controlling the external device connected to Out2 to achieve triggering; during the entire operation of the circuit, ESD2 will instantaneously suppress the signal at Out2 within the range of ±25 kV to the safe level of the IO port of the microprocessor system 3.

[0070] Similarly, the microprocessor system 3 controls the output level of PO3 to control the output level of Out3, achieving a synchronous trigger signal with the characteristics required for Out3 set by the key module 1, thereby controlling the external device connected to Out3 to achieve triggering; during the entire operation of the circuit, ESD3 will instantaneously suppress the signal at Out3 within the range of ±25 kV to the safe level of the IO port of the microprocessor system 3.

[0071] Similarly, the microprocessor system 3 controls the output level of PO4 to control the output level of Out4, achieving a synchronous trigger signal with the characteristics required for Out4 set by the key module 1, thereby controlling the external device connected to Out4 to achieve triggering; during the entire operation of the circuit, ESD4 will instantaneously suppress the signal at Out4 within the range of ±25 kV to the safe level of the IO port of the microprocessor system 3.

[0072] Similarly, the microprocessor system 3 controls the output level of PO5 to control the output level of Out5, achieving a synchronous trigger signal with the characteristics required for Out5 set by the key module 1, thereby controlling the external device connected to Out5 to achieve triggering; during the entire operation of the circuit, ESD5 will instantaneously suppress the signal at Out5 within the range of ±25 kV to the safe level of the IO port of the microprocessor system 3.

[0073] Similarly, the microprocessor system 3 controls the output level of PO6, controls the output level of Out6, and realizes the synchronous trigger signal with the characteristics required by the button module 1 for Out6, so as to control the external device connected to Out6 to achieve triggering; during the entire operation of the circuit, ESD6 will instantaneously suppress the signal of Out6 within the range of ±25 kV to the safe level of the IO port of the microprocessor system 3.

[0074] Similarly, the microprocessor system 3 controls the output level of PO7, controls the output level of Out7, and realizes the synchronous trigger signal with the characteristics required by the button module 1 for Out7, so as to control the external device connected to Out7 to achieve triggering; during the entire operation of the circuit, ESD7 will instantaneously suppress the signal of Out7 within the range of ±25 kV to the safe level of the IO port of the microprocessor system 3.

[0075] Similarly, the microprocessor system 3 controls the output level of PO8, controls the output level of Out8, and realizes the synchronous trigger signal with the characteristics required by the button module 1 for Out8, so as to control the external device connected to Out8 to achieve triggering; during the entire operation of the circuit, ESD8 will instantaneously suppress the signal of Out8 within the range of ±25 kV to the safe level of the IO port of the microprocessor system 3.

[0076] Therefore, according to the characteristics setting of the synchronous trigger signal for 8 channels by the button module 1, the microprocessor system 3 controls the output levels of PO1 - PO8, and generates a single - pulse synchronous trigger signal with a rising edge first and then a falling edge (high level maintained for 20 μs) or a single - pulse synchronous trigger signal with a falling edge first and then a rising edge (low level maintained for 20 μs) as required. The output signal characteristics of Out1 - Out8 are respectively consistent with the output signal characteristics of PO1 - PO8, and the trigger module 5 realizes the output of multi - characteristic multi - channel synchronous trigger signals; during the entire operation of the circuit, ESD1 - ESD8 will instantaneously suppress the signals of Out1 - Out8 within the range of ±25 kV to the safe level of the IO port of the microprocessor system 3.

[0077] The present invention first sets the characteristics of the synchronous trigger signal through buttons, then uses a special device made of two enameled wires to collect explosion signals, and controls the output of multi - characteristic multi - channel synchronous trigger signals based on the IO port of the microprocessor system, realizing the synchronous triggering of multi - characteristic multiple devices, and providing a synchronous trigger device for the protection research and explosion - proof design of buildings, bridges, pipelines, underground works, etc. under explosion shocks.

[0078] A synchronous trigger device of the present invention. Four buttons K1-K4 form a button module and are electrically connected to four IO ports S1-S4 of a microprocessing system respectively. An explosion signal acquisition device is electrically connected to one IO port PI1 of the microprocessing system. Eight-channel synchronous trigger signals Out1-Out8 are electrically connected to eight IO ports PO1-PO8 of the microprocessing system respectively. First, set the characteristics of the synchronous trigger signal through the buttons, and then use a special device made of two enameled wires to collect the explosion signal. After the explosion signal is collected by PI1, the microprocessing system controls PO1-PO8 to output multi-characteristic and multi-channel synchronous trigger signals Out1-Out8. Out1-Out8 can be independently set as a single pulse with a rising edge first and then a falling edge (high level maintained for 20 us), or a single pulse with a falling edge first and then a rising edge (low level maintained for 20 us), so as to realize the synchronous trigger of multiple devices with multiple characteristics. The system is simple in composition, stable and reliable, low in cost, fast in response, convenient in operation, and wide in application range.

[0079] The embodiments in this specification are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0080] Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A synchronous triggering device, characterized in that, Including: A key module, a microprocessor system, a collection module, and a trigger module. The key module, the collection module, and the trigger module are all connected to the microprocessor system; The collection module is used to collect the explosion signal of the explosion point; The trigger module includes multiple channels, and each channel is connected to an input / output port of the microprocessor system; The key module is used to set the synchronous trigger signal characteristics of each channel; The microprocessor system is used to, when receiving the explosion signal collected by the collection module, control the trigger module to output a multi-channel synchronous trigger signal according to the synchronous trigger signal characteristics of each channel.

2. The synchronous triggering device according to claim 1, wherein, The key module includes a first key, a second key, a third key, and a fourth key that are all connected to the microprocessor system; The first key is used for channel selection, the second key is used to set the synchronous trigger signal characteristics of the channel selected by the first key, the third key is used to confirm the setting made by the second key, and the fourth key is used to start and reset the multi-channel synchronous trigger function.

3. The synchronous triggering device according to claim 2, wherein, The synchronous trigger signal characteristic is a single-pulse synchronous trigger signal with a rising edge first and then a falling edge, or a single-pulse synchronous trigger signal with a falling edge first and then a rising edge.

4. The synchronous triggering device according to claim 3, wherein In the single-pulse synchronous trigger signal with a rising edge first and then a falling edge, the high level is maintained for 20 μs, and in the single-pulse synchronous trigger signal with a falling edge first and then a rising edge, the low level is maintained for 20 μs.

5. The synchronous triggering device according to claim 1, wherein The collection module includes a first enameled wire and a second enameled wire. One end of the first enameled wire and one end of the second enameled wire are placed under the explosive at the explosion point. The other end of the first enameled wire is grounded, and the other end of the second enameled wire is connected to the microprocessor system.

6. The synchronous triggering device according to claim 1, wherein Each channel includes an electrostatic protector, and the transient suppression voltage range of the electrostatic protector is ±25 kV.

7. The synchronous triggering device according to claim 1, characterized in that, It further includes a display module connected to the microprocessor system. The display module is used to display the synchronous trigger signal characteristics of each channel and the system operation status. The system operation status includes a parameter setting status, a waiting trigger status, and a trigger completed status.

8. The synchronous triggering device according to claim 1, wherein It further includes an alarm module connected to the microprocessor system. The alarm module is used to give an audible alarm or a visual alarm when the collection module collects the explosion signal.

9. The synchronous triggering device according to claim 1, wherein The number of channels of the trigger module is 8.

10. The synchronous triggering device according to claim 1, characterized in that, The microprocessor system is a microprocessor, a system on chip, a digital signal processor, a complex programmable logic device, a field programmable gate array, or an embedded system.

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