CN108761139B - Initiating explosive device equivalent device capable of continuously detonating and adjusting resistance value - Google Patents
Initiating explosive device equivalent device capable of continuously detonating and adjusting resistance value Download PDFInfo
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- CN108761139B CN108761139B CN201810630087.9A CN201810630087A CN108761139B CN 108761139 B CN108761139 B CN 108761139B CN 201810630087 A CN201810630087 A CN 201810630087A CN 108761139 B CN108761139 B CN 108761139B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The application relates to an initiating explosive device equivalent device capable of continuously detonating and adjusting resistance, which comprises an initiating explosive device +/-signal path, an RS trigger circuit, an LED low-end driving circuit and three LED lamps which are sequentially connected in series. The initiating explosive device +/-signal path consists of a high-speed digital isolation chip, a high-precision adjustable resistor and a 2K omega resistor which are connected in series between the initiating explosive device + signal and the initiating explosive device-signal. The 2K omega resistor can be shorted.
Description
Technical Field
The application relates to an initiating explosive device equivalent device, in particular to an initiating explosive device equivalent device which can be continuously detonated and has adjustable resistance.
Background
In the launching task process of the spacecraft, key actions such as separation of a vessel and an arrow, unfolding of a solar cell wing, unfolding of an antenna, unlocking of a rotary table and the like are mostly realized by adopting an electric initiating explosive device.
The prior art solutions currently mainly include the following categories:
1) the traditional initiating explosive device equivalent device.
The device is used for verifying the accuracy of the circuit by connecting a K omega-level resistor or an omega-level resistor in the initiating explosive device circuit in series, and when current flows in the initiating explosive device circuit, the circuit is verified by lighting the light emitting diode.
2) Initiating explosive device test system.
A. The initiating explosive device equivalent device is designed by a hardware platform based on PXI technology. The method mainly realizes detection, processing, storage and display of initiating explosive device detonation pulse time sequence signals, and can transmit data to a remote terminal through the Ethernet for real-time display. The system comprises a standard commercial industrial computer, a PXI bus backboard, a zero slot controller, a signal acquisition and processing module, a data backup module, a power module and the like.
B. Intelligent initiating explosive device equivalent device based on FPGA. The signal to be tested is respectively led into the initiating explosive device equivalent device from the high-voltage signal connector and the low-voltage signal interface, the signal to be tested is converted into a standard level signal after being shaped, filtered, clamped, overcurrent protected and physically isolated by the preprocessing circuit and then is sent to the signal selection switching circuit, the embedded PC104 host computer selects a high-voltage or low-voltage test state at a certain moment in a program-controlled mode to share the pulse test acquisition card, the pulse test acquisition card is responsible for testing the high-low level width of the pulse signal, and time data are sent to the PC104 host computer through the PC104 bus after the test is finished to realize the data acquisition, analysis, processing, display and storage.
C. Initiating explosive device equivalent device based on C8051. According to the functional requirements of the fire line equivalent testing device, the fire line electronic equivalent testing device is composed of an initiating explosive device fire testing channel, a power supply module, a data acquisition module, a data processing module, a display and alarm module and a communication module. The detonation testing circuit comprises a fuse and a Solid State Power Controller (SSPC), the data processing module is a single chip microcomputer C8051F020, the data acquisition module is a Hall current sensor AS712 and a resistance voltage division circuit, the display and alarm module comprises a liquid crystal display screen, a buzzer and an indicator light which are universal on the market, and the communication module comprises a USB interface circuit adopting USB 2.0.
At present, the satellite field has requirements on the weight, size and complexity of the initiating explosive device due to the fact that the cost is studied, and more traditional initiating explosive device equivalent devices which have the advantages of low cost, miniaturization, light weight, low complexity and the like compared with initiating explosive device testing systems are adopted. Although the traditional initiating explosive device equivalent can basically meet the requirement for single initiation or verification of the correctness of the initiating explosive device passage, the traditional initiating explosive device equivalent has defects in use.
In particular, the following drawbacks remain:
1) each initiating explosive device passage corresponds to one light emitting diode respectively, and the design can meet the use requirement when a single instruction is detonated. However, when the satellite combination command is initiated at present, a single initiating explosive device channel is continuously initiated twice or three times, and the middle interval is 1s, so that the design can not meet the actual use requirement of the satellite when the satellite combination command is initiated for multiple times. Even the three initiating explosive device testing systems adopt that each path only corresponds to one display signal, and only can be verified by inquiring data stored in a data module, so that the testing systems are relatively complex.
2) The traditional initiating explosive device equivalent device is only connected with a certain resistor in series in a path, when the resistor is connected in series with a K omega-level resistor, the initiating explosive device equivalent device can only verify the correctness of the path design of the initiating explosive device, and can not verify whether the current-limiting resistor on the satellite is damaged or not and whether the satellite has the capacity of outputting the required transient large current or not when the path passes the large current. When the resistor is connected in series to form the omega-level resistor, the initiating explosive device equivalent device verifies the design correctness of the initiating explosive device path and can simultaneously verify whether the resistor is damaged when heavy current flows through the path and the current-limiting resistor and whether the satellite has the capacity of outputting the required transient high current. In addition, when a fixed value resistor is connected in series, the path of the initiating explosive device cannot be verified in the environment closest to the resistance value of the real satellite loop.
In addition, if a real initiating explosive device is adopted, the danger coefficient is high, the test cost is high, the destructive power is large, and the device belongs to a consumed product.
In addition, whether the initiating explosive device is normally detonated directly determines the success or failure of the whole spacecraft.
Therefore, the urgent need in the field is to develop an initiating explosive device equivalent device which has important practical significance in low cost, light weight, continuous initiation and capability of meeting the requirements of various passage resistance values.
Disclosure of Invention
The purpose of the application is to provide an initiating explosive device equivalent device which can continuously detonate and has adjustable resistance.
In order to achieve the above object, the present application provides the following technical solutions.
The utility model provides an initiating explosive device equivalent device capable of continuous initiation and adjustable resistance, which comprises an initiating explosive device +/-signal path, a high-speed digital isolation chip, an RS trigger circuit, an LED low-end drive circuit and three LED lamps which are connected in series in sequence;
the initiating explosive device +/-signal path consists of a high-precision 0-5 omega adjustable resistor and a 2K omega resistor in the initiating explosive device + signal path and the initiating explosive device-signal path.
Wherein the 2K Ω resistor is shorted.
In one embodiment, when the initiating explosive device equivalent detonates, the initiating explosive device +/-signal has a voltage of 22-29V, and the voltage conducts the high-speed digital isolation chip.
In another embodiment, the high-precision adjustable resistor has a resistance value ranging from 0 Ω to 5 Ω.
In another embodiment, the three LEDs may be illuminated sequentially, simulating two or three consecutive firings in a priming sequence of the initiating explosive device.
Compared with the prior art, the beneficial effect of this application lies in having solved following technical problem: 1) in the prior art, only one light-emitting diode in a single initiating explosive device passage cannot verify two or three times of continuous detonating; 2) in the prior art, when an initiating explosive device equivalent device is connected with a K omega-level resistor in series, whether the circuit is damaged or not when a large current passes through the circuit cannot be verified; when omega-level resistors are connected in series, the current-limiting resistor can be damaged when the path of the initiating explosive device is verified for multiple times. In addition, when a fixed value resistor is connected in series, the path of the initiating explosive device cannot be verified in the environment closest to the resistance value of the real satellite loop. In other words, the beneficial effects of the application lie in that the initiating explosive device equivalent device capable of verifying two or three times of continuous detonating is provided, which can 1) adjust whether a 2K omega resistor is connected in series according to the situation, so that the damage of a current-limiting resistor is not easy to cause or the 2K omega resistor is short-circuited, and whether the initiating explosive device passage is damaged when passing a large current and whether the system has the capability of outputting the required transient large current can be verified in the environment closest to the real satellite loop resistance value; 3) can verify two or three times of continuous detonations and make up the defect that only one detonating can be verified in the past.
Drawings
Fig. 1 is a schematic diagram of the pyrotechnic device equivalent of the present application.
Detailed Description
The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings and the embodiments of the present application.
As shown in FIG. 1, the initiating explosive device signal is input through an electric connector (Y2-19ZJL) for spaceflight.
When the initiating explosive device is detonated, a voltage of 22-29V is arranged between +/-signals of the initiating explosive device, the voltage can directly conduct the high-speed optical coupling isolation chip, and the conduction current is not more than 10mA, so that the satellite initiating explosive device signals are isolated from subsequent circuits.
After the high-speed isolating optocoupler is conducted through initiation, the signal drives the LED through the digital driving combination logic, so that the LED is lightened to emit light. Due to the adoption of the CD4043B RS latching trigger chip, the chip comprises a 4-way RS trigger and is a four-cross-coupled tri-state COS/MOS or non-latching chip with an independent Q output end and an independent setting
And reset
The input end, so even if the high-speed opto-coupler no longer switches on after detonating, the LED lamp can not extinguish yet, only test personnel touch reset circuit, just can extinguish LED. Therefore, 3 LED lamps are arranged at the rear end of the single initiating explosive device passage, and the requirement of continuous two-time or three-time detonation can be met.
The traditional fixed resistor is designed into a form of connecting a 0-5 omega high-precision adjustable resistor and a 2K omega resistor in series in an initiating explosive device signal path, the 2K omega resistor is connected into a loop when the correctness of the initiating explosive device signal path is only required to be verified (the high-precision adjustable resistor value can be any value of 0-5 omega), and the correctness of the initiating explosive device signal path can be verified as long as a corresponding indicator lamp is on. When the damage of the initiating explosive device path and the current-limiting resistor when the large current flows through and the capability of outputting the required transient large current on the satellite need to be verified, the adjustable resistor resistance value can be set to be the value closest to the actual resistance value of the satellite according to the resistance value of the whole path of the satellite, the resistance value of the whole satellite is generally about 5 omega, at the moment, the two ends of the A/B are in short connection with the 2K omega resistor through the terminals, the resistance value of the whole loop is adjustable between 0 and 5 omega according to the actual resistance value of the initiating explosive device path except the current-limiting resistor, the circuit resistance value is adjusted to be the closest to the actual resistance value of the initiating explosive device when the equivalent device is detonated, the initiating explosive device path is verified according to the environment closest to the actual resistance value of the satellite, and the damage of the large current to the current-limiting resistor and the initiating explosive.
The embodiments described above are intended to facilitate the understanding and appreciation of the application by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present application is not limited to the embodiments herein, and those skilled in the art who have the benefit of this disclosure will appreciate that many modifications and variations are possible within the scope of the present application without departing from the scope and spirit of the present application.
Claims (3)
1. The initiating explosive device equivalent device capable of realizing continuous initiation and adjustable resistance is characterized by comprising an initiating explosive device +/-signal path, an RS trigger circuit, an LED low-end driving circuit and three LED lamps which are sequentially connected in series; the initiating explosive device +/-signal path consists of a high-speed digital isolation chip, a high-precision adjustable resistor and a 2K omega resistor which are connected in series between the initiating explosive device + signal and the initiating explosive device-signal; the 2K omega resistor is in short circuit, three LED lamps are arranged at the rear end of a single initiating explosive device channel, and the three LEDs are sequentially lightened to simulate two or three times of continuous initiation in initiating explosive device initiation time sequence.
2. The pyrotechnic equivalent device as claimed in claim 1, wherein when the pyrotechnic equivalent device is detonated, the voltage between +/-signals of the pyrotechnic equivalent device is 22-29V, and the voltage conducts the high-speed digital isolation chip.
3. The initiating explosive device according to claim 1, wherein the high-precision adjustable resistance value ranges from 0 Ω to 5 Ω.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810630087.9A CN108761139B (en) | 2018-06-19 | 2018-06-19 | Initiating explosive device equivalent device capable of continuously detonating and adjusting resistance value |
| CN202011214413.1A CN112327085B (en) | 2018-06-19 | 2018-06-19 | Verification method for initiating explosive device passage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810630087.9A CN108761139B (en) | 2018-06-19 | 2018-06-19 | Initiating explosive device equivalent device capable of continuously detonating and adjusting resistance value |
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| CN202011214413.1A Division CN112327085B (en) | 2018-06-19 | 2018-06-19 | Verification method for initiating explosive device passage |
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| CN108761139A CN108761139A (en) | 2018-11-06 |
| CN108761139B true CN108761139B (en) | 2020-11-10 |
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| CN201810630087.9A Active CN108761139B (en) | 2018-06-19 | 2018-06-19 | Initiating explosive device equivalent device capable of continuously detonating and adjusting resistance value |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111392071B (en) * | 2020-03-17 | 2022-03-15 | 中国科学院微小卫星创新研究院 | Initiating explosive device detonation control system and testing method thereof |
| CN111366045B (en) * | 2020-03-18 | 2023-04-18 | 北京东方计量测试研究所 | Initiating explosive device equivalent device and device |
| CN114923382B (en) * | 2022-07-01 | 2024-03-08 | 深圳市卡卓无线信息技术有限公司 | Electronic detonator module test system |
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Also Published As
| Publication number | Publication date |
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| CN112327085B (en) | 2023-08-25 |
| CN108761139A (en) | 2018-11-06 |
| CN112327085A (en) | 2021-02-05 |
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