A multifunctional fuse detector and its detection method

Abstract

This invention discloses a multifunctional fuse detector and its testing method. Addressing the problems of current X-type multifunctional fuse testing systems, such as dispersed testing equipment, reliance on manual labor, cumbersome operation, and large testing errors, this invention performs a single full-process test, achieving automated testing in four modes: fuse timing setting, triggering, delay, and the entire process, thus improving testing efficiency. It also features current-limiting and voltage-limiting protection circuits and a threshold switch detection circuit, ensuring high safety, high accuracy, and high reliability in testing. The main control system uses a VB interface, further enhancing testing efficiency. Experimental results show that the detector system is easy to operate, provides accurate test results, meets functional design requirements, and can provide valuable experience for the design of testing equipment for other fuse products.

Description

Technical Field

[0001] This invention belongs to the field of multifunctional fuze detection technology, specifically relating to a multifunctional fuze detector and its detection method. Background Technology

[0002] A fuze is a control system that uses information from the target, environment, platform, and network to detonate or ignite the warhead charge according to a predetermined strategy. It can select the detonation point, provide ignition commands for endurance or extended-range engines, and provide damage effect information. As the "brain" of ammunition detonation control, the fuze is a key component ensuring the safety of weapons and ammunition and achieving complete destruction.

[0003] With the rapid development of fuze technology and the increasing complexity of fuze functions, higher demands are placed on fuze testing systems and methods: testing systems must reliably and efficiently achieve fuze status detection, signal acquisition and transmission, data analysis and identification, and result recording and storage. Standardization, modularization, and generalization are becoming the development trends of fuze testing systems. The development of fuze testing systems has roughly gone through the following four stages:

[0004] (1) Dedicated testing equipment period: During this period, the testing equipment was basically a stand-alone test bench without a system concept. The product testing was completed by the fuze technicians manually connecting external instruments.

[0005] (2) The era of modular automatic test systems based on programmable instruments: Modular test equipment, which uses a computer as the core and connects programmable instruments via GPIB bus, emerged in large numbers, marking the arrival of the automatic test system era. However, the system was large in size and had low bus speed, which could not meet the needs of high-speed and high-throughput applications.

[0006] (3) The era of modular virtual integrated automatic test systems: The emergence of VXI and PXI technologies provided new ideas for building high-speed, high-throughput automatic test systems. At the same time, the use of virtual instrument technology enabled the operation buttons and display panels of the instruments to be implemented in the computer, reducing system redundancy, greatly reducing the size of the automatic test system, and saving costs.

[0007] (4) The era of general-purpose automatic testing systems: Driven by the rapid development of science and technology, automatic testing systems began to move towards generalization, intelligence, standardization and networking.

[0008] The main problems with current X-type multifunctional fuze testing systems are the dispersed testing equipment, the need for manual intervention, cumbersome operation, and large testing errors. These issues prevent them from meeting the requirements for high precision, high safety, fast testing speed, and full-function, end-to-end testing of fuzes. Therefore, there is an urgent need for a multifunctional testing instrument and method that can meet the testing needs of X-type multifunctional fuzes. Summary of the Invention

[0009] This invention proposes a multifunctional fuse detector and its detection method, which can efficiently realize the status detection of X-type fuses by combining the safety requirements of pyrotechnic operation. It has the advantages of being portable, having a built-in power supply, high detection accuracy, high safety, fast detection speed, and being able to realize full-function and full-process detection.

[0010] The technical solution for realizing the present invention is as follows: a multi-functional fuse detector, including a detector system, a setting output cable and a fuse test stand. The fuse test stand adopts a full-explosive test stand. The detector system includes a built-in 12V battery, a DC / DC conversion module, a threshold switch detection and setting control switch, a setting system, a threshold switch detection circuit, a detection control system, a main control interface system and an output voltage / current display module.

[0011] A 12V DC battery is converted into 5V and 12V voltage outputs via a DC / DC conversion module to power the detection system. The DC / DC conversion module is connected to the threshold switch detection and setting control switch, the detection control system, and the main control interface system, providing 5V operating power to the main control interface system and the detection control system. The threshold switch detection and setting control switch is connected to the setting system and the threshold switch detection circuit, providing 5V operating power to the threshold switch detection circuit and 12V operating power to the setting system through switch state switching. The detection control system is connected to the main control interface system and the setting system, transmitting the required test information to the setting system via the interface circuit according to the communication protocol. The setting system is connected to the fuze via multi-stage current-limiting resistors and an output voltage / current display module, outputting operating energy and setting information to the fuze. The threshold switch detection circuit is connected to the fuze, enabling loop status detection.

[0012] A detection method for a multifunctional fuse detector, comprising the following steps:

[0013] Step 1: Connect the cables, turn on the power switch, and the detector system will start.

[0014] Step 2: Turn the detection control switch to the "threshold switch detection position" and check the display in the threshold switch detection display area.

[0015] Step 3: Turn the detection control switch to "Set Detection Position" to complete the detector self-test. After completion, click the "Next" button on the main control interface.

[0016] Step 4: Confirm the status of the threshold switch. If it is normal, proceed to the setting mode selection. If it is not normal, turn off the threshold switch and check the connection circuit or replace the test sample.

[0017] Step 5: After setting the setup parameters, click the "Setup" button on the main control interface and check the corresponding feedback information: If the setup is normal and the voltage and current meter parameters are normal, the test is complete; if it is not normal, check whether the fuse or the detection circuit is faulty.

[0018] Step 6: Turn off the power switch of the setup system and proceed to the next test.

[0019] Compared with existing technologies, the significant advantages of this invention are as follows: Addressing the problems of current X-type multifunctional fuze testing systems, such as dispersed testing equipment, reliance on manual labor, cumbersome operation, and large testing errors, this invention designs a multifunctional fuze tester and its testing method. The system can automatically test four modes—fuze timing setting, triggering, delay, and full-process—in a single full-process test, improving testing efficiency. It also features current limiting and voltage limiting protection circuits and a threshold switch detection circuit, ensuring high safety, high accuracy, and high reliability in testing. The main control system uses a VB interface, further improving testing efficiency. Experimental results show that the tester system is easy to operate, provides accurate test results, meets functional design requirements, and can provide experience for the design of testing equipment for other fuze products. Attached Figure Description

[0020] Figure 1 This is a block diagram of the detection instrument system.

[0021] Figure 2 This is a schematic diagram of the self-feedback current limiting and voltage limiting circuit of the detector.

[0022] Figure 3 This is a block diagram of the threshold switch detection circuit.

[0023] Figure 4 The flowchart shows the detection method of the multi-functional fuse detector. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] In this invention, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] The following section will further introduce the specific implementation method, as well as the technical difficulties and inventive points of this invention, using examples from this design.

[0028] Combination Figure 1 The present invention discloses a multi-functional fuse detector, comprising a detector system, a setting output cable, and a fuse test stand, wherein the fuse test stand adopts a full-explosive test stand. The detector system includes a built-in 12V battery, a DC / DC conversion module, a threshold switch detection and setting control switch, a setting system, a threshold switch detection circuit, a detection control system, a main control interface system, and an output voltage / current display module.

[0029] A 12V DC battery is converted into 5V and 12V voltage outputs via a DC / DC conversion module to power the detection system. The DC / DC conversion module is connected to the threshold switch detection and setting control switch, the detection control system, and the main control interface system, providing 5V operating power to the main control interface system and the detection control system. The threshold switch detection and setting control switch is connected to the setting system and the threshold switch detection circuit, providing 5V operating power to the threshold switch detection circuit and 12V operating power to the setting system through switch state switching. The detection control system is connected to the main control interface system and the setting system, transmitting the required test information to the setting system via the interface circuit according to the communication protocol. The setting system is connected to the fuze via multi-stage current-limiting resistors and an output voltage / current display module, outputting operating energy and setting information to the fuze. The threshold switch detection circuit is connected to the fuze, enabling loop status detection.

[0030] The multi-functional fuze detector is equipped with current limiting and voltage limiting circuits.

[0031] The main control interface system and detection and control system adopt a Windows system tablet, embedding a VB executable program, and have the following functions:

[0032] 1) Serial port query function: Displays the serial port number, which is used by inspectors to query the serial port number before the test begins.

[0033] 2) Self-test display function: Displays self-test results to determine whether the system connection is normal.

[0034] 3) Installation function: First, confirm the threshold switch status, then select the installation mode, click the installation button, and display the feedback result.

[0035] The DC / DC conversion module converts the battery input voltage to 5V to power the threshold switch detection circuit.

[0036] The setting system transmits setting information to the fuze and supplies power to the fuze, while also receiving feedback information from the fuze; it integrates a self-feedback current limiting and voltage limiting protection circuit, and has overcurrent and overvoltage protection functions, ensuring that the output of the detector does not exceed 12V and 60mA, and is less than the primer safety voltage of 14V.

[0037] The output voltage / current display module consists of a DC voltage and current meter, with a voltage measurement range of 0.00-33.00V (resolution 0.01V) and a current measurement range of 0-999.9mA (resolution 0.1mA).

[0038] The threshold switch detection and setting control switch can switch between the threshold detection circuit and the setting circuit. The threshold detection circuit is powered by 5V to ensure the safety of the entire projectile during the detection process; the setting circuit is powered by 12V to ensure the reliable operation of the setting system.

[0039] like Figure 3 The threshold switch detection circuit can determine the state of the threshold switch (short circuit, open circuit, and normal). The design employs low-voltage circuitry and multi-stage current-limiting resistors, along with a self-feedback current detection circuit, ensuring a maximum current of no more than 10mA, thus improving circuit detection safety.

[0040] The setting output is a female connector design, and the test input is a male connector design. Both are equipped with corresponding plugs and have a reverse insertion prevention design.

[0041] Combination Figure 2The current-limiting and voltage-limiting circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a first transistor Q1, and a second transistor Q2. One end of each of the first resistors R1 and R2 is connected to the 12V power supply terminal and the collector of the second transistor Q2; the other end of each of the first resistors R1 and R2 is connected to the base of the second transistor Q2 and the third terminal of the first transistor. The second terminal of the first transistor Q1 is connected to the external power input terminal and the base and collector of the second transistor Q2; the first terminal of the first transistor Q1 is connected to one end of the third resistor R3; and the other end of the third resistor R3 is connected to the power ground. When the circuit current is less than or equal to 60mA, the voltage across the second resistor R2 is low, and the voltage difference between them does not meet the turn-on voltage requirement for the second transistor Q2. Meanwhile, the voltage difference between terminals 2 and 3 of the first transistor Q1 is large. The external power input is output to the third resistor R3 (equivalent circuit load) through the first transistor Q1. When the circuit operating current increases to exceed 60mA, the voltage across the second resistor R2 increases, and the voltage difference between them meets the turn-on voltage requirement for the second transistor Q2, causing Q2 to turn on. The voltage difference between terminals 2 and 3 of the first transistor Q1 decreases, no longer meeting the turn-on condition, and the circuit current is cut off. Once the circuit operating current is less than or equal to 60mA, the circuit outputs normally. This circuit can achieve an output voltage not exceeding 12V, which is less than the ammunition primer safety voltage of 14V, and an output current not exceeding 60mA, ensuring the safety of the detection process.

[0042] like Figure 4 The detection method of the multi-functional fuse detector includes the following steps:

[0043] Step 1: Connect the cables, turn on the power switch, and the detector system will start.

[0044] Step 2: Turn the detection control switch to the "threshold switch detection position" and check the display in the threshold switch detection display area.

[0045] Step 3: Turn the detection control switch to "Set Detection Position" to complete the detector self-test. After completion, click the "Next" button on the main control interface.

[0046] Step 4: Confirm the status of the threshold switch. If it is normal, proceed to the setting mode selection. If it is not normal, turn off the threshold switch and check the connection circuit or replace the test sample.

[0047] Step 5: After setting the setup parameters, click the "Setup" button on the main control interface and check the corresponding feedback information: If the setup is normal and the voltage and current meter parameters are normal, the test is complete; if it is not normal, check whether the fuse or the detection circuit is faulty.

[0048] Step 6: Turn off the power switch of the setup system and proceed to the next test.

Claims

1. A multi-functional fuse detector, characterized in that: It includes a testing system, setting output cables, and a fuse test stand. The fuse test stand adopts a full-ballistic test stand. The testing system includes a built-in 12V battery, a DC / DC conversion module, a threshold switch detection and setting control switch, a setting system, a threshold switch detection circuit, a detection control system, a main control interface system, and an output voltage / current display module. A 12V DC battery is converted into 5V and 12V voltage outputs via a DC / DC conversion module to power the detection system. The DC / DC conversion module is connected to the threshold switch detection and setting control switch, the detection control system, and the main control interface system, providing 5V operating power to the main control interface system and the detection control system. The threshold switch detection and setting control switch is connected to the setting system and the threshold switch detection circuit, providing 5V operating power to the threshold switch detection circuit and 12V operating power to the setting system through switch state switching. The detection control system is connected to the main control interface system and the setting system, transmitting the required test information to the setting system via the interface circuit according to the communication protocol. The setting system is connected to the fuze via multi-stage current-limiting resistors and an output voltage / current display module, outputting operating energy and setting information to the fuze. The threshold switch detection circuit is connected to the fuze, enabling loop status detection. The multi-functional fuse detector also features current limiting and voltage limiting circuits; The current-limiting and voltage-limiting circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a first transistor Q1, and a second transistor Q2. One end of each of the first and second resistors R1 and R2 is connected to the 12V power supply terminal and the collector of the second transistor Q2. The other end of each of the first and second resistors R2 is connected to the base of the second transistor Q2 and the third terminal of the first transistor Q2. Terminal 2 of the first transistor Q1 is connected to the external power input terminal and the base and collector of the second transistor Q2. Terminal 1 of the first transistor Q1 is connected to one end of the third resistor R3, and the other end of the third resistor R3 is connected to ground. When the set circuit current is less than or equal to 60mA, the voltage across the second resistor R2 is relatively small. The voltage difference between terminals 2 and 3 of the first transistor Q1 does not meet the turn-on voltage requirement of the second transistor Q2. The external power input is then output to the third resistor R3 through the first transistor Q1. When the circuit operating current increases to over 60mA, the voltage across the second resistor R2 increases, and the voltage difference between the two terminals meets the turn-on voltage requirement of the second transistor Q2, causing Q2 to turn on. The voltage difference between terminals 2 and 3 of the first transistor Q1 decreases, no longer meeting the turn-on condition, and the circuit current is cut off. Once the circuit operating current is less than or equal to 60mA, the circuit outputs normally. This circuit can achieve an output voltage not exceeding 12V, which is less than the ammunition primer safety voltage of 14V, and an output current not exceeding 60mA, ensuring the safety of the detection process.

2. The multi-functional fuse detector according to claim 1, characterized in that: The main control interface system and detection and control system adopt a Windows system tablet, embedding a VB executable program, and have the following functions: 1) Serial port query function: Displays the serial port number, which is used by inspectors to query the serial port number before the test begins; 2) Self-test display function: Displays self-test results to determine if the system connection is normal; 3) Installation function: First, confirm the threshold switch status, then select the installation mode, click the installation button, and display the feedback result.

3. The multi-functional fuse detector according to claim 1, characterized in that: The DC / DC conversion module converts the battery input voltage to 5V to power the threshold switch detection circuit. The setting system transmits setting information and supplies power to the fuze, while also receiving feedback information from the fuze; it integrates a self-feedback current limiting and voltage limiting protection circuit, and has overcurrent and overvoltage protection functions, ensuring that the detector output does not exceed 12V and 60mA, and is less than the primer safety voltage of 14V; The output voltage / current display module consists of a DC voltage and current meter, with a voltage measurement range of 0.00-33.00V and a resolution of 0.01V, and a current measurement range of 0-999.9mA and a resolution of 0.1mA. The threshold switch detection and setting control switch can switch between the threshold detection circuit and the setting circuit. The threshold detection circuit is powered by 5V to ensure the safety of the entire projectile during the detection process; the setting circuit is powered by 12V to ensure the reliable operation of the setting system. The threshold switch detection circuit can determine the state of the threshold switch, i.e., short circuit, open circuit or normal. The design uses low voltage circuit and multi-stage current limiting resistors, and adopts a self-feedback current detection circuit. The maximum current does not exceed 10mA, which improves the safety of circuit detection. The setting output is designed as a female connector, while the test input is designed as a male connector. Both are equipped with corresponding plugs and have a reverse insertion prevention design.

4. A detection method for a multifunctional fuse detector as described in any one of claims 1 to 3, characterized in that, The steps are as follows: Step 1: Connect the cables, turn on the power switch, and the detector system will start. Step 2: Turn the detection control switch to the "threshold switch detection position" and check the display in the threshold switch detection display area; Step 3: Turn the detection control switch to "Setup Detection Position" to complete the detector self-test. After completion, click the "Next" button on the main control interface. Step 4: Confirm the status of the threshold switch. If it is normal, proceed to the setting mode selection. If it is not normal, turn off the threshold switch, check the connection circuit or replace the test sample. Step 5: After setting the setup parameters, click the "Setup" button on the main control interface and check the corresponding feedback information: If the setup is normal and the voltage and current meter parameters are normal, the test is complete; if it is not normal, check whether the fuse or the detection circuit is faulty. Step 6: Turn off the power switch of the setup system and proceed to the next test.

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