阅读说明：本技术 一种近炸引信探测器 (Proximity fuse detector ) 是由 敬果 张子飞 汤光银 张大国 于 2019-09-03 设计创作，主要内容包括：发明公开了一种近炸引信探测器,所述混频器,用于对所述射频发射接收模块输出的目标回波信号和分流出的发射信号混频处理；所述滤波器,用于对所述混频器输出的中频信号进行处理,并选择需要的第N次谐波信号；所述中频放大器,用于对所述滤波器输出的谐波信号进行放大输出；所述抗干扰模块,用于对所述中频放大器输出的谐波信号进行大信号闭锁,浮动门限自适应和频率检测处理；所述信号调理模块,用于对所述抗干扰模块输出的信号进行带通滤波放大；所述目标识别模块,用于识别、计算以及提取目标信号；所述点火输出模块,用于打开控制开关,输出点火信号。达到近炸引信探测器能够抗外部干扰、可靠识别目标与炸点的目的。(The invention discloses a proximity fuse detector, wherein a frequency mixer is used for carrying out frequency mixing processing on a target echo signal output by a radio frequency transmitting and receiving module and a branched transmitting signal; the filter is used for processing the intermediate frequency signal output by the mixer and selecting a required Nth harmonic signal; the intermediate frequency amplifier is used for amplifying and outputting the harmonic signals output by the filter; the anti-interference module is used for performing large signal locking, floating threshold self-adaption and frequency detection processing on the harmonic signals output by the intermediate frequency amplifier; the signal conditioning module is used for performing band-pass filtering amplification on the signal output by the anti-interference module; the target identification module is used for identifying, calculating and extracting a target signal; and the ignition output module is used for turning on the control switch and outputting an ignition signal. The purpose that the proximity fuse detector can resist external interference and reliably identify a target and a burst point is achieved.)

1. A proximity fuse detector is characterized in that,

the system comprises a radio frequency transmitting and receiving module, a mixer, a filter, an intermediate frequency amplifier, an anti-interference module, a signal conditioning module, a target identification module and an ignition output module;

the input end of the frequency mixer is connected with the radio frequency transmitting and receiving module and is used for carrying out frequency mixing processing on the target echo signal output by the radio frequency transmitting and receiving module and the split transmitting signal and outputting an intermediate frequency signal;

the input end of the filter is connected with the output end of the mixer and used for processing the intermediate frequency signal output by the mixer, and selecting the required Nth harmonic signal for output;

the input end of the intermediate frequency amplifier is connected with the output end of the filter and is used for amplifying and outputting the harmonic signals output by the filter;

the input end of the anti-interference module is connected with the output end of the intermediate frequency amplifier and is used for performing large signal locking, floating threshold self-adaption and frequency detection processing on harmonic signals output by the intermediate frequency amplifier and outputting the processed signals;

the input end of the signal conditioning module is connected with the output end of the anti-interference module and is used for performing band-pass filtering amplification on the signal output by the anti-interference module and outputting the signal;

the input end of the target identification module is connected with the output end of the signal conditioning module and is used for performing rectification integration, integration and comparison processing on the signal output by the signal conditioning module, identifying, calculating, extracting and outputting a target signal;

the input end of the ignition output module is connected with the output end of the target identification module and used for turning on a control switch according to the output signal of the target identification module and outputting an ignition signal.

2. The proximity fuse detector of claim 1,

the radio frequency transmitting and receiving module comprises a radio frequency transmitting and receiving unit, a microstrip antenna and a double-frequency oscillating circuit, wherein the input end and the output end of the radio frequency transmitting and receiving unit are connected with the microstrip antenna, and the other output end of the radio frequency transmitting and receiving unit is connected with the input end of the frequency mixer; the double-frequency oscillating circuit forms a 23 GHz-27 GHz working frequency band.

3. The proximity fuse detector of claim 1,

and the filter filters the multiple harmonic signals output by the mixer and outputs the required Nth harmonic component.

4. The proximity fuse detector of claim 1,

the anti-interference module comprises a latch and a first comparator, wherein the input end of the latch is connected with the output end of the intermediate frequency amplifier, the output end of the latch is connected with the input end of the first comparator, and the output end of the first comparator is connected with the input end of the signal conditioning module;

the latch is used for carrying out large-signal locking on harmonic signals output by the intermediate frequency amplifier;

the first comparator is used for receiving the signal output by the latch, carrying out floating threshold self-adaption and frequency detection processing, and transmitting the processed signal to the signal conditioning module.

5. The proximity fuse detector of claim 4,

the signal conditioning module comprises a band-pass filter and an operational amplifier, wherein the input end of the band-pass filter is connected with the output end of the first comparator, the output end of the band-pass filter is connected with the input end of the operational amplifier, and the output end of the operational amplifier is connected with the input end of the target identification module;

the band-pass filter is used for performing band-pass filtering on the signal which is compared and processed by the first comparator;

the operational amplifier is used for amplifying the band-pass filtered signal and transmitting the amplified signal to the target identification module.

6. The proximity fuse detector of claim 5,

the target identification module comprises a rectifier, an integrating circuit and a second comparator, wherein the input end of the rectifier is connected with the output end of the operational amplifier, the output end of the rectifier is connected with the input end of the integrating circuit, the output end of the integrating circuit is connected with the input end of the second comparator, and the output end of the second comparator is electrically connected with the ignition output module;

the rectifier is used for rectifying the signal amplified by the operational amplifier;

the integration circuit is used for integrating the rectified signal;

the second comparator is used for comparing the integrated signals, extracting target signals, identifying targets and transmitting the target signals to the ignition output module.

7. The proximity fuse detector of claim 6,

the ignition output module turns on a near-explosion signal output switch according to the target signal output by the second comparator, outputs a near-explosion signal, and the output switch is a voltage-type drive MOSFET field effect transistor.

8. The proximity fuse detector of claim 7,

the output end of the ignition output module is connected with an external safety system or a single chip microcomputer.

Technical Field

The invention relates to the field of millimeter wave detection for a proximity fuse, in particular to a proximity fuse detector.

Background

At present, a proximity fuse belongs to one of fuses and mainly comprises a detection device, a safety relief system (safety system for short) and an ignition execution system. According to the classification of the detection device, the detector can be divided into a radio detector, a laser detector, an infrared detector and the like, the radio detector belongs to a traditional target detector and is widely applied at present, the radio detector has the characteristic that the detection distance can be set, the radio detector can be divided into a millimeter wave detector, a centimeter wave detector and a millimeter wave detector according to the working frequency band, and the working wavelength and the signal power are determined according to the application environment, the detection distance and the precision in practical engineering application. The millimeter wave detector is also widely applied in the civil industry field, such as vehicle-mounted distance measuring radar, self-adaptive cruise function and the like.

However, the radio signal is interfered by external natural environment, active deception of enemy, and the like, and the reliability of target identification needs to be further improved.

Disclosure of Invention

In order to overcome the defects in the prior art of radio detection, the invention aims to provide a proximity fuse detector which is resistant to external interference and can reliably identify a target and a blast height.

In order to achieve the purpose, the invention adopts a proximity fuse detector which comprises a radio frequency transmitting and receiving module, a frequency mixer, a filter, an intermediate frequency amplifier, an anti-interference module, a signal conditioning module, a target identification module and an ignition output module;

the input end of the frequency mixer is connected with the radio frequency transmitting and receiving module and is used for carrying out frequency mixing processing on the target echo signal output by the radio frequency transmitting and receiving module and the split transmitting signal and outputting an intermediate frequency signal;

the input end of the filter is connected with the output end of the mixer and used for processing the intermediate frequency signal output by the mixer, and selecting the required Nth harmonic signal for output;

the input end of the intermediate frequency amplifier is connected with the output end of the filter and is used for amplifying and outputting the harmonic signals output by the filter;

the input end of the anti-interference module is connected with the output end of the intermediate frequency amplifier and is used for performing large signal locking, floating threshold self-adaption and frequency detection processing on harmonic signals output by the intermediate frequency amplifier and outputting the processed signals;

the input end of the signal conditioning module is connected with the output end of the anti-interference module and is used for performing band-pass filtering amplification on the signal output by the anti-interference module and outputting the signal;

the input end of the target identification module is connected with the output end of the signal conditioning module and is used for performing rectification integration, integration and comparison processing on the signal output by the signal conditioning module, identifying, calculating, extracting and outputting a target signal;

the input end of the ignition output module is connected with the output end of the target identification module and used for turning on a control switch according to the output signal of the target identification module and outputting an ignition signal.

The radio frequency transmitting and receiving module comprises a radio frequency transmitting and receiving unit, a microstrip antenna and a double-frequency oscillating circuit, wherein the input end and the output end of the radio frequency transmitting and receiving unit are connected with the microstrip antenna, and the other output end of the radio frequency transmitting and receiving unit is connected with the input end of the mixer; the double-frequency oscillating circuit forms a 23 GHz-27 GHz working frequency band.

The frequency mixer performs frequency mixing processing on signals of 23.5 GHz-26.5 GHz working frequency bands, and ensures the magnitude of frequency responsivity.

And the filter filters multiple harmonic signals output by the mixer and outputs the required Nth harmonic component.

The frequency responsivity of the intermediate frequency amplifier meets the signal operation requirement.

The anti-interference module comprises a latch and a first comparator, wherein the input end of the latch is connected with the output end of the intermediate frequency amplifier, the output end of the latch is connected with the input end of the first comparator, and the output end of the first comparator is connected with the input end of the signal conditioning module;

the latch is used for carrying out large-signal locking on harmonic signals output by the intermediate frequency amplifier;

the first comparator is used for receiving the signal output by the latch, carrying out floating threshold self-adaption and frequency detection processing, and transmitting the processed signal to the signal conditioning module.

The signal conditioning module comprises a band-pass filter and an operational amplifier, wherein the input end of the band-pass filter is connected with the output end of the first comparator, the output end of the band-pass filter is connected with the input end of the operational amplifier, and the output end of the operational amplifier is connected with the input end of the target identification module;

the band-pass filter is used for performing band-pass filtering on the signal which is compared and processed by the first comparator;

the operational amplifier is used for amplifying the band-pass filtered signal and transmitting the amplified signal to the target identification module.

The target identification module comprises a rectifier, an integrating circuit and a second comparator, wherein the input end of the rectifier is connected with the output end of the operational amplifier, the output end of the rectifier is connected with the input end of the integrating circuit, the output end of the integrating circuit is connected with the input end of the second comparator, and the output end of the second comparator is electrically connected with the ignition output module;

the rectifier is used for rectifying the signal amplified by the operational amplifier;

the integration circuit is used for integrating the rectified signal;

the second comparator is used for comparing the integrated signals, extracting target signals, identifying targets and transmitting the target signals to the ignition output module.

The ignition output module turns on a near burst signal output switch according to the target signal output by the second comparator, outputs a near burst signal, and the output switch is a voltage-type drive MOSFET field effect transistor.

The output end of the ignition output module is connected with an external safety system or a single chip microcomputer.

The invention relates to a proximity fuse detector, which is used for performing frequency mixing processing on a target echo signal output by a radio frequency transmitting and receiving module and a split transmitting signal through a frequency mixer and outputting an intermediate frequency signal; the filter is used for processing the intermediate frequency signal output by the mixer, selecting the needed Nth harmonic signal and outputting the signal; the intermediate frequency amplifier is used for amplifying and outputting the harmonic signals output by the filter; the anti-interference module is used for performing large signal locking, floating threshold self-adaption and frequency detection processing on the harmonic signals output by the intermediate frequency amplifier and outputting the processed signals; the signal conditioning module is used for performing band-pass filtering amplification on the signal output by the anti-interference module and outputting the signal; the target identification module is used for carrying out rectification integration, integration and comparison processing on the signal output by the signal conditioning module, identifying, calculating, extracting and outputting a target signal; and the ignition output module is used for turning on a control switch according to the output signal of the target identification module and outputting an ignition signal. The effect that the proximity fuse detector can resist external interference, reliably identify a target and achieve high explosion is obtained.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

Fig. 1 is a system block diagram of an inventive proximity fuse detector.

Fig. 2 is a schematic block diagram of the signal processing and target recognition of the invention.

Fig. 3 is a block diagram of the structure of the inventive rf transmitting module.

Fig. 4 is a block diagram of the structure of the anti-jamming module of the present invention.

Fig. 5 is a block diagram of the structure of the inventive signal conditioning module.

FIG. 6 is a block diagram of the structural components of the inventive target recognition module.

100-proximity fuse detector, 10-radio frequency transmitting and receiving module, 11-radio frequency transmitting and receiving unit, 12-microstrip antenna, 13-double frequency oscillating circuit, 20-mixer, 30-filter, 40-intermediate frequency amplifier, 50-anti-interference module, 51-latch, 52-first comparator, 60-signal conditioning module, 61-band-pass filter, 62-operational amplifier, 70-target identification module, 71-rectifier, 72-integrator circuit, 73-second comparator and 80-ignition output module.

Detailed Description

Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the invention. Further, in the description of the invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 6, the invention provides a proximity fuse detector 100, which includes a radio frequency transmitting and receiving module 10, a mixer 20, a filter 30, an intermediate frequency amplifier 40, an anti-jamming module 50, a signal conditioning module 60, a target identification module 70 and an ignition output module 80;

the input end of the mixer 20 is connected to the radio frequency transmitting and receiving module 10, and is configured to perform frequency mixing processing on the target echo signal output by the radio frequency transmitting and receiving module 10 and the split transmitting signal, and output an intermediate frequency signal;

the input end of the filter 30 is connected to the output end of the mixer 20, and is configured to process the intermediate frequency signal output by the mixer 20, and select a required nth harmonic signal for output;

the input end of the intermediate frequency amplifier 40 is connected to the output end of the filter 30, and is configured to amplify and output the harmonic signal output by the filter 30;

the input end of the anti-interference module 50 is connected with the output end of the intermediate frequency amplifier 40, and is used for performing large signal locking, floating threshold self-adaption and frequency detection processing on the harmonic signals output by the intermediate frequency amplifier 40 and outputting the processed signals;

the input end of the signal conditioning module 60 is connected with the output end of the anti-jamming module 50, and is used for performing band-pass filtering amplification on the signal output by the anti-jamming module 50 and outputting the signal;

the input end of the target identification module 70 is connected with the output end of the signal conditioning module 60, and is used for performing rectification integration, integration and comparison processing on the signal output by the signal conditioning module 60, identifying, calculating, extracting and outputting a target signal;

the input end of the ignition output module 80 is connected to the output end of the target identification module 70, and is configured to turn on a control switch according to the output signal of the target identification module 70, and output an ignition signal.

In this embodiment, the radio frequency transmitting and receiving module 10 outputs a target echo signal and a split transmitting signal, and then transmits the signal to the mixer 20, the model of the mixer 20 is PE4150MLAB-Z, the mixer 20 receives the target echo signal and the split transmitting signal output by the radio frequency transmitting and receiving module 10, performs mixing processing, and transmits the processed intermediate frequency signal to the filter 30, the model of the filter 30 is DAC3-30A, the filter 30 receives the intermediate frequency signal output by the mixer 20, and performs filtering processing on the intermediate frequency signal, and then selects a required nth harmonic signal, and transmits the signal to the intermediate frequency amplifier 40, the model of the intermediate frequency amplifier 40 is SN65LV1021DB, the intermediate frequency amplifier 40 amplifies the harmonic signal output by the filter 30, and transmits the amplified harmonic signal to the anti-interference module 50, after receiving the harmonic signal, the anti-jamming module 50 performs large signal locking, floating threshold self-adaptation and frequency detection processing, so that the universality of the explosive height setting is improved, the processed signal is output and transmitted to the signal conditioning module 60, so that the signal output by the anti-jamming module 50 is subjected to band-pass filtering amplification, and the signal subjected to band-pass filtering amplification is transmitted to the target identification module 70; the target identification module 70 performs rectification integration, integration and comparison processing on the signal output by the signal conditioning module 60, identifies, calculates and extracts a target signal, and then transmits the extracted target signal to the ignition output module 80, the ignition output module 80 turns on a control switch to output an ignition signal, wherein the ignition signal can be directly or indirectly used for a safety system near-explosion decision, the radio frequency transmitting and receiving module 10, the mixer 20, the filter 30, the intermediate frequency amplifier 40, the anti-interference module 50, the signal conditioning module 60, the target identification module 70 and the ignition output module 80 are jointly matched, and a modularized and integrated design is adopted, so that the stability of the near-explosion fuse detector is greatly improved, the near-explosion fuse detector can resist external interference, reliably identify a target and a high explosion, therefore, the method can be directly applied to circuit design of occasions such as radio proximity fuses, automobile high-speed distance measurement and the like, and has good development prospect.

Further, the radio frequency transmitting and receiving module 10 includes a radio frequency transmitting and receiving unit 11, a microstrip antenna 12 and a dual-frequency oscillating circuit 13, an input end and an output end of the radio frequency transmitting and receiving unit 11 are connected to the microstrip antenna 12, and another output end of the radio frequency transmitting and receiving unit 11 is connected to an input end of the mixer 20; the double-frequency oscillating circuit 13 forms an operating frequency band of 23 GHz-27 GHz.

In this embodiment, the dual-frequency oscillating circuit 13 is connected to the radio frequency transmitting and receiving unit 11, the dual-frequency oscillating circuit 13 generates an oscillating signal, the oscillating signal is transmitted to a target through the microstrip antenna 12, and is transmitted to the radio frequency transmitting and receiving unit 11 for processing after being reflected by the target, wherein the oscillating frequency of the oscillating signal of the dual-frequency oscillating circuit 13 is set to 23GHz to 27GHz, and the dual-frequency oscillating circuit has a suitable atmosphere adaptation window, so that the natural environment resistance can be improved, and the external interference resistance of the fuze detector can be further improved.

Further, the mixer 20 performs mixing processing on the signal of the working frequency band of 23.5GHz to 26.5GHz, and ensures the magnitude of frequency responsivity.

In the embodiment, the mixer 20 is used for mixing signals in the working frequency band of 23.5GHz to 26.5GHz, and the frequency responsivity should not be too large, wherein the frequency responsivity is used for measuring the adaptability of the amplifying circuit to signals with different frequencies, so as to improve the stability of the proximity fuse detector.

Further, the filter 30 filters the multiple harmonic signals output by the mixer 20 to output the required nth harmonic component.

In the present embodiment, the filter 30 receives the multiple harmonic signal output from the mixer 20, then performs filtering processing on the multiple harmonic signal, obtains a useful nth harmonic component after the filtering processing, and transmits the useful harmonic component to the intermediate frequency amplifier 40.

Further, the frequency responsivity of the intermediate frequency amplifier 40 meets the signal operation requirement.

In this embodiment, when the intermediate frequency amplifier 40 receives the useful harmonic component signal transmitted by the filter 30, the intermediate frequency amplifier 40 amplifies the harmonic component signal and performs frequency selection, that is, it is ensured that the amplified harmonic component signal is an intermediate frequency signal, so as to greatly improve the signal output by the mixer 20, and the frequency responsivity of the intermediate frequency amplifier 40 meets the signal operation requirement, thereby improving the accuracy and stability of the received signal of the proximity fuse detector.

Further, the interference rejection module 50 includes a latch 51 and a first comparator 52, an input terminal of the latch 51 is connected to the output terminal of the intermediate frequency amplifier 40, an output terminal of the latch 51 is connected to an input terminal of the first comparator 52, and an output terminal of the first comparator 52 is connected to an input terminal of the signal conditioning module 60;

the latch 51 is used for performing large signal locking on the harmonic signal output by the intermediate frequency amplifier 40;

the first comparator 52 is configured to receive the signal output by the latch 51, perform floating threshold adaptation and frequency detection processing, and transmit the processed signal to the signal conditioning module 60.

In this embodiment, the amplified harmonic signal is transmitted to the latch 51, the latch 51 is in the model of SN74LVC573AN, the latch 51 performs large signal blocking on the harmonic signal output by the intermediate frequency amplifier 40 to ensure that the signal is not lost, and then transmits the signal to the first comparator 52, the first comparator 52 is in the model of SN74LS688N, and the first comparator 52 performs floating threshold adaptation and frequency detection processing after receiving the signal and then transmits the signal to the signal conditioning module 60.

Further, the signal conditioning module 60 includes a band-pass filter 61 and an operational amplifier 62, an input terminal of the band-pass filter 61 is connected to an output terminal of the first comparator 52, an output terminal of the band-pass filter 61 is connected to an input terminal of the operational amplifier 62, and an output terminal of the operational amplifier 62 is connected to an input terminal of the target identification module 70;

the band-pass filter 61 is configured to perform band-pass filtering on the signal after the comparison processing by the first comparator 52;

the operational amplifier 62 is configured to amplify the band-pass filtered signal and transmit the amplified signal to the target identification module 70.

The target identification module 70 comprises a rectifier 71, an integrating circuit 72 and a second comparator 73, wherein an input end of the rectifier 71 is connected with an output end of the operational amplifier 62, an output end of the rectifier 71 is connected with an input end of the integrating circuit 72, an output end of the integrating circuit 72 is connected with an input end of the second comparator 73, and an output end of the second comparator 73 is electrically connected with the ignition output module 80;

the rectifier 71 is configured to rectify the signal amplified by the operational amplifier 62;

the integrating circuit 72 is used for integrating the rectified signal;

the second comparator 73 is configured to compare the integrated signal, extract a target signal, identify a target, and transmit the target signal to the ignition output module 80.

In this embodiment, the model of the band-pass filter 61 is CF61a4801C, the model of the operational amplifier 62 is CF61a4801C, and after the band-pass filter 61 receives the signal output by the first comparator 52, the band-pass filter 61 performs band-pass filtering on the signal, the band-pass filtering is to allow a wave in a specific frequency band to pass through and shield waves in other frequency bands, and then the operational amplifier 62 performs amplification processing on the band-pass filtered signal and transmits the amplified signal to the target identification module 70.

The model of the rectifier 71 is DB154, the model of the second comparator 73 is SN74LS682N, the second comparator 73 selects a high-speed device to meet the responsiveness requirement during low explosion height, the rectifier 71 rectifies the signal after receiving the signal processed by the operational amplifier 62, the rectified signal is transmitted to the integrating circuit 72 for waveform transformation in the signal, elimination of offset voltage of the amplifying circuit and integral compensation in feedback control, and then the rectified signal is transmitted to the second comparator 73, the second comparator 73 identifies the signal containing rich target information, extracts effective information, reduces the possibility of false operation of the explosion proximity fuse detector, and is convenient for reliably identifying the target and the explosion height.

The specific principles of the signal conditioning module 60 and the target identification module 70 are as follows:

the QF doppler signal output by the filter 30 is divided into two paths for processing, one path enters a large signal locking circuit to complete radar interference identification, and the output of the large signal locking circuit after identification and judgment can act on a comparison enabling end to complete the locking control of the comparison function of the second comparator 73; another way gets into behind band pass filter 61, output low frequency target signal, low frequency target signal pass through divide into two branches behind operational amplifier 62A and handle, and one branch gets the U1 signal through amplitude integral, and the U1 signal acts on second comparator 73 noninverting input end, another branch process behind operational amplifier 62B, output signal passes through the delay timer time delay, and the delay timer output signal passes through amplitude integral processing again, output signal U2, and the U2 signal acts on second comparator 73 inverting input end, when these two branch's numerical values equal (U1 ═ U2), it has reached the design requirement of fried height to show the bullet mesh distance, second comparator 73 outputs the nearly fried signal.

Further, the ignition output module 80 turns on a near burst signal output switch according to the target signal output by the second comparator 73, and outputs a near burst signal, where the output switch is a voltage-type driving MOSFET.

The output end of the ignition output module 80 is connected with an external safety system or a single chip microcomputer.

In this embodiment, the ignition output module 80 can achieve the effect of isolating the near-explosion output channel from the power supply, and after the ignition output module 80 receives the target signal output by the second comparator 73, the output switch of the MOSFET field effect transistor driven by the voltage type is turned on, so as to allow the near-explosion signal to be output, and the near-explosion signal is transmitted to the safety system or the single chip microcomputer connected with the output switch, where the single chip microcomputer is AT89C 51.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.