A fully electronic fuze tester based on Hall sensor and its test method

Abstract

The invention discloses a full-electronic fuze tester based on a Hall sensor and a test method thereof, comprising a power conversion module, an FPGA core processing control module, a charging current test module, a discharge waveform test module, an analog instruction circuit, and an instruction control and test result display module; the power conversion module is respectively connected to the discharge waveform test module, the FPGA core processing control module, and the charging current test module; the FPGA core processing control module is respectively connected to the discharge waveform test module, the charging current test module, and the instruction control and test result display module; the invention uses the Hall sensor to enable the tester to achieve isolated testing of the charging current and has overcurrent and overvoltage protection functions; the full-electronic fuze discharge waveform is collected by a high-speed ADC converter, so that the test time is shortened, and the invention has the advantages of easy function expansion, design upgrade, easy system maintenance, etc., and can be used as a basic device of a general full-electronic fuze tester.

Description

Technical Field

[0001] The invention relates to a fuze tester, in particular to a full-electronic fuze tester based on a Hall sensor and a testing method thereof. Background Art

[0002] During the production process of fully electronic fuzes, it is necessary to monitor and test the charging current and discharge waveform of the high-voltage pulse module many times. In the current fully electronic fuze tester, the charging current of the high-voltage pulse module is tested by measuring the voltage value on the sampling resistor to calculate the current value, and the discharge waveform is measured with the assistance of an oscilloscope. The core control module uses a general integrated chip.

[0003] However, when the measured current is very large, when the sampling resistor passes a large current, the heat generated will cause the resistance value to change, resulting in frequent errors, and the change in resistance value is unstable and cannot be corrected by introducing parameters. In addition, when the sampling resistor is connected in series in the measurement loop, the high voltage and large current may damage the tester; when using an oscilloscope to assist in measuring the discharge waveform, an external oscilloscope is required, which is time-consuming and inconvenient; general integrated chips are difficult to expand and cannot be upgraded. Based on this, the present invention provides a tester that can isolate and test the charging current of a fully electronic fuse, has an automatic protection function when dangerous situations such as overcurrent and overvoltage occur, and can test the discharge waveform of a fully electronic fuse. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a full electronic fuze tester based on Hall sensor and a test method thereof.

[0005] The present invention is achieved through the following technical solutions:

[0006] A fully electronic fuze tester based on a Hall sensor, comprising a power conversion module, an FPGA core processing control module, a charging current test module, a discharge waveform test module, an analog command circuit, a command control and test result display module;

[0007] The power conversion module is respectively connected to the discharge waveform test module, the FPGA core processing control module, and the charging current test module;

[0008] The FPGA core processing control module is respectively connected with the discharge waveform test module, the charging current test module and the instruction control and test result display module;

[0009] The input end of the analog command circuit is connected to the FPGA core processing control module, and its output end transmits information with the fully electronic fuze through RS485.

[0010] The discharge waveform test module includes a high-speed operational amplifier and a high-speed ADC converter. The output end of the high-speed operational amplifier is connected to the input end of the high-speed ADC converter. The high-speed ADC converter collects the discharge waveform of the full-electronic fuze, avoiding the use of an oscilloscope to assist in testing the discharge waveform of the full-electronic fuze.

[0011] The charging current test module includes a reference voltage circuit and a Hall sensor. The reference voltage circuit provides a power supply voltage for the Hall sensor, and the Hall sensor outputs a charging current. When the Hall sensor is used, there is good electrical isolation between the primary circuit and the secondary circuit, that is, physical isolation is achieved between the tester itself and the all-electronic fuse.

[0012] The output end of the Hall sensor is connected to a comparator, and the Hall sensor is connected in the full electronic fuse power supply circuit. The output end voltage signal is input to the comparator with a threshold. After the input current exceeds the set threshold, the FPGA core processing control module receives an overcurrent protection signal and instantly shuts off the power supply of the product to protect the product from damage.

[0013] The power conversion module includes a filter and an AC-DC power supply. The filter suppresses interference signals in the AC power supply and then converts the 220V AC voltage into a DC voltage through the AC-DC power supply.

[0014] The FPGA core processing control module includes FPGA, and the FPGA uses the XC7V690TFFG1926 model of XILINX Company.

[0015] A testing method of a fully electronic fuze tester based on a Hall sensor, the steps of which are:

[0016] A. Connect 220V AC voltage to the input terminal of the power conversion module of the full electronic fuze tester, and connect the analog command output terminal to the full electronic fuze to be tested;

[0017] B. Turn on the tester, and the display will show the tester power supply voltage and current;

[0018] C. Click "Power on the product" on the display screen to start self-testing the tester. After the self-test shows normal, enter the test;

[0019] D. Click the "Release Command" on the display screen, and the tester will show that the first-level insurance is released normally, and the time of first-level insurance release will be displayed;

[0020] E. Click "Simulate Overload" on the display screen, and the tester will show that the secondary insurance is released normally, and the secondary insurance release time will be displayed;

[0021] F. Click "Ignition Command" on the display screen, and the tester will display the high-voltage charging current, charging time, and the three-level insurance release is normal and the three-level insurance release time;

[0022] G. Click "Unlock Command" on the display screen, and then click "Detonation Command" or "Self-Destruction Command" at will, and the tester will display the high-voltage discharge status.

[0023] The FPGA core processing control module receives the voltage information from the output end of the Hall sensor, converts it into current and displays it on the display screen through the RS232 bus.

[0024] A testing method for a fully electronic fuze tester based on a Hall sensor, characterized in that the self-test process in step C is:

[0025] a. After entering the full electronic fuze test process, the FPGA core processing control module sends a full electronic fuze power supply signal to provide power to the full electronic fuze;

[0026] b. The FPGA core processing control module sends out a self-check signal of the fully electronic fuze, which is sent to the fully electronic fuze through the R485 bus;

[0027] c. After receiving the signal, the all-electronic fuze generates characteristic self-test information and returns a self-test signal. The FPGA core processing control module judges the self-test signal returned by the all-electronic fuze;

[0028] d. If the self-test signal does not meet the predetermined requirements, the FPGA core processing control module will identify the different abnormal information of each function of the full electronic fuze, and display the self-test abnormality on the display screen of the command control and test result display module. If the self-test signal meets the predetermined requirements, the self-test of the full electronic fuze is qualified, and the self-test is displayed as normal on the display screen.

[0029] The self-test information includes detonation signal, various levels of insurance release signals, charging signal and unlocking signal.

[0030] The beneficial effects of the present invention are:

[0031] The present invention uses a Hall sensor to enable the tester to isolate the test charging current and has overcurrent and overvoltage protection functions; a high-speed ADC converter is used to collect the discharge waveform of the full-electronic fuze, which shortens the test time and has good environmental adaptability; an FPGA with multiple interfaces and functions is used as the core device of the core processing control module, which has the advantages of easy function expansion and design upgrade, and can be used as a basic device of a general full-electronic fuze tester, with high application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the present invention;

[0033] Figure 2 It is a test flow chart of the present invention.

[0034] In the figure: 1-all-electronic fuze tester, 2-power conversion module, 3-amplified waveform test module, 4-FPGA core processing control module, 5-charging current test module, 6-analog instruction circuit, 7-control instruction and test result display module, 8-all-electronic fuze, 9-high-speed operational amplifier, 10-high-speed ADC converter, 11-reference voltage circuit, 12-Hall sensor. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0036] Embodiment 1.

[0037] A fully electronic fuze tester based on a Hall sensor, comprising a power conversion module 2, an FPGA core processing control module 4, a charging current test module 5, a discharge waveform test module 3, a simulation command circuit 6, and a command control and test result display module 7;

[0038] The power conversion module 2 is respectively connected to the discharge waveform test module 3, the FPGA core processing control module 4, and the charging current test module 5;

[0039] The FPGA core processing control module 4 is respectively connected to the discharge waveform test module 3, the charging current test module 5 and the instruction control and test result display module 7; the input end of the analog instruction circuit 6 is connected to the FPGA core processing control module 4, and its output end transmits information with the full electronic fuse 8 through RS485.

[0040] The discharge waveform test module includes a high-speed operational amplifier 9 and a high-speed ADC converter 10. The output end of the high-speed operational amplifier 9 is connected to the input end of the high-speed ADC converter 10. The high-speed operational amplifier 9 is used as an impedance match and can protect the high-speed ADC converter 10. The high-speed ADC converter 10 collects the discharge waveform of the full-electronic fuse 8 to avoid using an oscilloscope to assist in testing the discharge waveform of the full-electronic fuse 8.

[0041] High-speed operational amplifier 9 uses AD8041 160MHz rail-to-rail operational amplifier;

[0042] The high-speed ADC converter 10 uses the MAX19538 full-parallel ADC. The test digital quantity output by the high-speed ADC converter 10 is transmitted to the FPGA core processing control module 4, which converts the test result into display data and outputs it to the display screen through the RS232 serial port.

[0043] The charging current testing module 5 includes a reference voltage circuit 11 and a Hall sensor 12 .

[0044] The reference voltage circuit 11 uses the MAX6350 high-precision reference voltage source with an output voltage of +5V to provide the power supply voltage for the Hall sensor 12. The charging current is obtained through the output voltage of the Hall sensor 12. When the Hall sensor is used, there is good electrical isolation between the primary circuit and the secondary circuit, that is, physical isolation is achieved between the tester itself and the all-electronic fuse; the Hall sensor 12 uses the ACS712 linear current sensor based on the Hall effect, with a range of 10A and SOIC8 patch package. The output voltage of the Hall sensor 12 can be converted to obtain the charging current. The input end of the Hall sensor 12 is connected in series in the power supply circuit of the all-electronic fuse 8, and the output end voltage signal is input to the comparator. The comparator sets the threshold. After the input current exceeds the set threshold, the FPGA core processing control module receives the overcurrent protection signal and instantly shuts off the product power supply to protect the product from damage. Its biggest feature is that it solves the instability and inaccuracy of the current tested by the sampling resistor, and can cut off the product power supply in a relatively short time.

[0045] The power conversion module 2 includes a filter and an AC-DC power supply. The filter suppresses interference signals in the AC power supply and converts the 220V AC voltage into a DC voltage through the AC-DC power supply. The AC-DC power supply module is small in size, light in weight, and has a power of up to 200W, providing power supply guarantee for the tester.

[0046] The FPGA core processing control module 4 includes an FPGA. The FPGA uses the XC7V690TFFG1926 model of XILINX Company. It has complete functions and rich resources, and provides a large margin for the development of tester functions.

[0047] Embodiment 2.

[0048] A testing method of a fully electronic fuze tester based on a Hall sensor, the steps of which are:

[0049] A. Connect 220V AC voltage to the input terminal of the power conversion module of the full electronic fuze tester, and connect the analog command output terminal to the full electronic fuze to be tested;

[0050] B. Turn on the tester, and the display will show the tester power supply voltage and current;

[0051] C. Click "Power on the product" on the display screen to start self-testing the tester. After the self-test shows normal, enter the test;

[0052] D. Click the "Release Command" on the display screen, and the tester will show that the first-level insurance is released normally, and the time of first-level insurance release will be displayed;

[0053] E. Click "Simulate Overload" on the display screen, and the tester will show that the secondary insurance is released normally, and the secondary insurance release time will be displayed;

[0054] F. Click "Ignition Command" on the display screen, and the tester will display the high-voltage charging current, charging time, and the three-level insurance release is normal and the three-level insurance release time;

[0055] G. Click "Unlock Command" on the display screen, and then click "Detonation Command" or "Self-Destruction Command" at will, and the tester will display the high-voltage discharge status.

[0056] In the fully electronic fuze power supply circuit, the FPGA core processing control module receives the voltage information from the output end of the Hall sensor, converts it into current and displays it on the display screen through the RS232 bus.

[0057] A testing method for a fully electronic fuze tester based on a Hall sensor, characterized in that the self-test process in step C is:

[0058] a. After entering the full electronic fuze test process, the FPGA core processing control module sends a full electronic fuze power supply signal to provide power to the full electronic fuze;

[0059] b. The FPGA core processing control module sends out a self-test signal of the fully electronic fuze, which is sent to the fully electronic fuze through the R485 bus.

[0060] c. After receiving the signal, the fully electronic fuze generates characteristic self-test information and returns a self-test signal. The FPGA core processing control module judges the self-test signal returned by the fully electronic fuze.

[0061] d. If the self-test signal does not meet the predetermined requirements, the FPGA core processing control module will identify the different abnormal information of each function of the full electronic fuze, and display the self-test abnormality on the display screen of the command control and test result display module. If the self-test signal meets the predetermined requirements, the self-test of the full electronic fuze is qualified, and the self-test is displayed as normal on the display screen.

[0062] The self-test information includes detonation signal, various levels of insurance release signals, charging signal and unlocking signal.

Claims

1. A fully electronic fuze tester based on Hall sensor, characterized in that: It includes power conversion module, FPGA core processing control module, charging current test module, discharge waveform test module, analog instruction circuit, instruction control and test result display module; The power conversion module is respectively connected to the discharge waveform test module, the FPGA core processing control module, and the charging current test module; The FPGA core processing control module is respectively connected with the discharge waveform test module, the charging current test module and the instruction control and test result display module; The input end of the analog command circuit is connected to the FPGA core processing control module, and its output end transmits information with the fully electronic fuze through the RS485 bus; The discharge waveform test module includes a high-speed operational amplifier and a high-speed ADC converter, the output end of the high-speed operational amplifier is connected to the input end of the high-speed ADC converter, and the high-speed ADC converter collects the discharge waveform of the full electronic fuse; The charging current test module includes a reference voltage circuit and a Hall sensor, the reference voltage circuit provides a power supply voltage for the Hall sensor, and the Hall sensor outputs a charging current; The output end of the Hall sensor is connected to a comparator, and the Hall sensor is connected in the power supply circuit of the all-electronic fuze. The voltage signal at its output end is input to the comparator with a threshold. After the input current exceeds the set threshold, the FPGA core processing control module receives an overcurrent protection signal and instantly shuts off the power supply of the product.

2. The all-electronic fuze tester based on Hall sensor according to claim 1, characterized in that: The power conversion module includes a filter and an AC-DC power supply. The filter suppresses interference signals in the AC power supply and then converts the 220V AC voltage into a DC voltage through the AC-DC power supply.

3. The all-electronic fuze tester based on Hall sensor according to claim 1, characterized in that: The FPGA core processing control module includes FPGA, and the FPGA uses the XC7V690TFFG1926 model of XILINX Company.

4. The testing method of the Hall sensor-based all-electronic fuze tester according to claim 1, comprising the following steps: A. Connect 220V AC voltage to the input terminal of the power conversion module of the full electronic fuze tester, and connect the analog command output terminal to the full electronic fuze to be tested; B. Turn on the tester, and the display will show the tester power supply voltage and current; C. Click "Power on" on the display screen to start self-testing the tester. After the self-test shows normal, enter the test; D. Click "Release Command" on the display screen, and the tester will show that the first-level insurance is released normally, and the time of first-level insurance release will be displayed; E. Click "Simulate Overload" on the display screen, and the tester will show that the secondary insurance is released normally, and the secondary insurance release time will be displayed; F. Click "Ignition Command" on the display screen, and the tester will display the high-voltage charging current, charging time, and the three-level insurance release is normal and the three-level insurance release time; G. Click "Unlock Command" on the display screen, then click "Detonation Command" or "Self-Destruction Command" at will. The tester displays high voltage discharge status.

5. The testing method of a full electronic fuze tester based on a Hall sensor as claimed in claim 4, characterized in that: The FPGA core processing control module receives the voltage information from the output end of the Hall sensor, converts it into current and displays it on the display screen through the RS232 bus.

6. The testing method of a full electronic fuze tester based on a Hall sensor as claimed in claim 4, characterized in that: The self-test process in step C is: a. After entering the full electronic fuze test process, the FPGA core processing control module sends a full electronic fuze power supply signal to provide power to the full electronic fuze; b. The FPGA core processing control module sends out a self-test signal of the fully electronic fuze, which is sent to the fully electronic fuze through the R485 bus. c. After receiving the signal, the fully electronic fuze generates characteristic self-test information and returns a self-test signal. The FPGA core processing control module judges the self-test signal returned by the fully electronic fuze. d. If the self-test signal does not meet the predetermined requirements, the FPGA core processing control module will identify the different abnormal information of each function of the full electronic fuze, and display the self-test abnormality on the display screen of the command control and test result display module. If the self-test signal meets the predetermined requirements, the self-test of the full electronic fuze is qualified, and the self-test is displayed as normal on the display screen.

7. A testing method for a full electronic fuze tester based on a Hall sensor as claimed in claim 6, characterized in that: The self-test information includes detonation signal, various levels of insurance release signals, charging signal and unlocking signal.

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