Automatic test system for passive interference release system

Abstract

The utility model relates to the technical field of automatic testing, in particular to an automatic testing system for a passive interference release system. Comprising a pulse acquisition unit, a simulated bomb unit and a pulse acquisition unit. A simulated launching unit is arranged between a simulated missile unit and a pulse acquisition unit; a simulated bomb unit is arranged to collect a pulse signal and a current signal from a simulated ignition contact; a pulse acquisition unit is arranged, and an input test mode instruction and a pulse signal acquired from a simulated missile unit are used for generating a simulated launching signal; by arranging the simulation delivery unit, turn-off and turn-on operations are carried out according to a simulation delivery signal to realize simulation delivery; the whole process test from power-on self-test to simulation ignition to successful release is simple in system structure.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic detection, and specifically, to an automatic test system for a passive interference dispensing system. Background Art

[0002] The passive interference dispensing system is used to release chaff interference to the radar of enemy ground or airborne weapon systems, and release infrared interference to air-to-air and surface-to-air missiles guided by infrared, to protect the safety of the carrier aircraft itself and improve the survival rate of the aircraft in combat.

[0003] The purpose of automatically testing the passive interference dispensing system is to quickly judge whether parameters such as the number of ignition pulses, current, pulse width, and phase difference generated by the system meet the ignition requirements during its research and development, use, and maintenance processes, and improve the dispensing success rate.

[0004] The Chinese utility model patent with the publication number of "CN217156679U" and the name of "An airborne jammer dispensing line checker" has the problem of low automation degree as it requires manual plugging and unplugging of the simulated projectile unit to simulate the situation where the jammer is not in place; the Chinese utility model patent with the publication number of "CN217981657U" and the name of "An outfield checker for a chaff and infrared interference system" realizes the state where the simulated projectile is not in place or the dispensing is successful by moving the simulated projectile unit with a motor, with a relatively high degree of automation, but the cost of the whole set of equipment is high and the volume is relatively large, and it is not very suitable for outfield testing and the testing of the passive interference dispensing system of low-cost unmanned aerial vehicles or target drones. Content of the Utility Model

[0005] Aiming at the problems of low automation degree in the existing interference dispensing test system through manual plugging and unplugging for simulation and high automation degree in simulation through a motor but not being suitable for outfield testing, the utility model proposes an automatic test system for a passive interference dispensing system; a simulation dispensing unit is arranged between the simulated projectile unit and the pulse acquisition unit; by setting the simulated projectile unit, pulse signals and current signals are collected from the simulated ignition contact points; by setting the pulse acquisition unit, the input test mode instruction and the pulse signals obtained from the simulated projectile unit are used to generate a simulation dispensing signal; by setting the simulation dispensing unit, according to the simulation dispensing signal, turn-off and turn-on operations are performed to achieve simulation dispensing; the whole process test from power-on self-check to simulated ignition to successful dispensing is carried out, and the system structure is simple.

[0006] The specific implementation content of the utility model is as follows:

[0007] An automatic test system for a passive interference dispensing system, connected to the simulated ignition contact points; comprising a pulse acquisition unit, a simulated projectile unit, and a simulation dispensing unit;

[0008] The input end of the pulse acquisition unit inputs a test mode instruction and is connected to the output end of the analog bomb unit; the output end of the pulse acquisition unit is connected to the input end of the analog delivery unit;

[0009] The input end of the analog bomb unit is connected to an analog ignition contact;

[0010] The input end of the analog delivery unit is connected to an analog ignition contact, and the output end of the analog delivery unit is connected to the analog bomb unit;

[0011] The analog bomb unit is used to collect pulse signals and current signals from the analog ignition contact;

[0012] The pulse acquisition unit is used to generate an analog delivery signal from the input test mode instruction and the pulse signal obtained from the analog bomb unit;

[0013] The analog delivery unit is used to perform turn-off and turn-on operations according to the analog delivery signal to achieve analog delivery.

[0014] To better implement the present invention, further, the analog bomb unit includes a pulse acquisition unit, a current acquisition unit, and an analog load resistor;

[0015] The pulse acquisition unit includes an isolation operational amplifier comparator; the current acquisition unit includes a Hall sensor;

[0016] The input end of the isolation operational amplifier comparator is connected to the positive output end of the analog ignition contact, and the output end of the isolation operational amplifier comparator is connected to the input end of the isolation operational amplifier comparator;

[0017] One end of the analog load resistor is connected between the input end of the isolation operational amplifier comparator and the positive output end of the analog ignition contact, and the other end of the analog load resistor is connected between the input end of the Hall sensor and the output end of the analog delivery unit;

[0018] The input end of the Hall sensor is connected between the analog load resistor and the output end of the analog delivery unit, and the output end of the Hall sensor is connected to the input end of the isolation operational amplifier comparator.

[0019] To better implement the present invention, further, the delivery unit includes an NMOS transistor and an isolation driver;

[0020] The gate of the NMOS transistor is connected to the output end of the isolation driver, the drain of the NMOS transistor is connected to the isolation operational amplifier comparator and the Hall sensor, and the source of the NMOS transistor is connected to the negative output end of the analog ignition contact;

[0021] The input end of the isolation driver is connected to the output end of the pulse acquisition unit.

[0022] To better implement the present utility model, further, the pulse acquisition unit includes a processor and a human-computer interaction unit;

[0023] The processor includes a PS end and a PL end;

[0024] The input end of the human-computer interaction unit inputs a test mode instruction, and the output end is connected to the PS end of the processor through an SPI bus;

[0025] The PL end of the processor is connected to the isolation operational amplifier comparator and the isolation driver through an IO interface.

[0026] To better implement the present utility model, further, the human-computer interaction unit includes a touch screen control chip, an RTC chip, and an EEPROM storage chip;

[0027] One end of the touch screen chip inputs a test mode instruction, and the other end is connected to the RTC chip through an SPI bus;

[0028] One end of the EEPROM storage chip is connected to the RTC chip through an SPI bus, and the other end is connected to the PS end of the processor through an SPI bus.

[0029] To better implement the present utility model, further, the pulse acquisition unit further includes an I2C bus isolator;

[0030] One end of the I2C bus isolator is connected to the Hall sensor, and the other end is connected to the PL end of the processor.

[0031] To better implement the present utility model, further, the pulse acquisition unit further includes an ADC chip;

[0032] One end of the ADC chip is connected to the output end of the Hall sensor, and the other end is connected to the PL end of the processor through an SPIP bus.

[0033] The present utility model has the following beneficial effects:

[0034] (1) The present utility model adds an analog delivery unit between the analog projectile unit and the pulse detection unit, realizes the full-process test of the delivery system from power-on self-check to analog ignition to successful delivery, and saves the test data and results in the form of a log for convenient access at any time.

[0035] (2) The analog delivery unit of the present utility model is mainly composed of a programmable switch circuit, and whether to deliver is controlled by the processor of the pulse acquisition unit. The circuit is simple, reliable, and has a low cost. Brief Description of the Drawings

[0036] Figure 1 This is a schematic block diagram of the overall structure of the automatic test system for the passive interference dispensing system provided by the present utility model.

[0037] Figure 2 This is a schematic circuit diagram of the pulse acquisition unit provided by the present utility model.

[0038] Figure 3 This is a schematic circuit diagram showing the connection between the simulated projectile unit and the simulated dispensing unit provided by the present utility model. Detailed Description of the Embodiments

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. It should be understood that the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments, and thus should not be regarded as a limitation of the protection scope. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0040] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "arranged", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can also be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0041] Embodiment 1:

[0042] This embodiment provides an automatic test system for a passive interference dispensing system, as Figure 1 shown, connected to the simulated ignition contact; including a pulse acquisition unit, a simulated projectile unit, and a simulated dispensing unit;

[0043] The input end of the pulse acquisition unit inputs a test mode instruction and is connected to the output end of the simulated projectile unit; the output end of the pulse acquisition unit is connected to the input end of the simulated dispensing unit;

[0044] The input end of the simulated projectile unit is connected to the simulated ignition contact;

[0045] The input end of the simulated dispensing unit is connected to the simulated ignition contact, and the output end of the simulated dispensing unit is connected to the simulated projectile unit;

[0046] The simulated projectile unit is used to collect pulse signals and current signals from the simulated ignition contact;

[0047] The pulse acquisition unit is used to generate a simulated delivery signal from the input test mode instruction and the pulse signal obtained from the simulated projectile unit;

[0048] The simulated delivery unit is used to perform turn-off and turn-on operations according to the simulated delivery signal to achieve simulated delivery.

[0049] Working principle: In this embodiment, a simulated delivery unit is arranged between the simulated projectile unit and the pulse acquisition unit; by arranging the simulated projectile unit, pulse signals and current signals are collected from the simulated ignition contact; by arranging the pulse acquisition unit, a simulated delivery signal is generated from the input test mode instruction and the pulse signal obtained from the simulated projectile unit; by arranging the simulated delivery unit, turn-off and turn-on operations are performed according to the simulated delivery signal to achieve simulated delivery; a full-process test from power-on self-check to simulated ignition to successful delivery is realized, and the system structure is simple.

[0050] Embodiment 2:

[0051] On the basis of the above Embodiment 1, as Figure 3 shown, the specific structures of the simulated projectile unit and the simulated delivery unit are described.

[0052] The simulated projectile unit includes a pulse acquisition unit, a current acquisition unit, and a simulated load resistor;

[0053] The pulse acquisition unit includes an isolation operational amplifier comparator; the current acquisition unit includes a Hall sensor;

[0054] The input end of the isolation operational amplifier comparator is connected to the positive output end of the simulated ignition contact, and the output end of the isolation operational amplifier comparator is connected to the input end of the isolation operational amplifier comparator;

[0055] One end of the simulated load resistor is connected between the input end of the isolation operational amplifier comparator and the positive output end of the simulated ignition contact, and the other end of the simulated load resistor is connected between the input end of the Hall sensor and the output end of the simulated delivery unit;

[0056] The input end of the Hall sensor is connected between the simulated load resistor and the output end of the simulated delivery unit, and the output end of the Hall sensor is connected to the input end of the isolation operational amplifier comparator.

[0057] Further, the delivery unit includes an NMOS transistor and an isolation driver;

[0058] The gate of the NMOS transistor is connected to the output terminal of the isolation driver, the drain of the NMOS transistor is connected to the isolation operational amplifier comparator and the Hall sensor, and the source of the NMOS transistor is connected to the negative output terminal of the analog ignition contact;

[0059] The input terminal of the isolation driver is connected to the output terminal of the pulse acquisition unit.

[0060] Working principle: The analog bomb unit set in this embodiment is composed of a pulse acquisition unit, a current acquisition unit, and an analog load resistor. The pulse acquisition unit is composed of an isolation operational amplifier comparator; the current acquisition unit is composed of a Hall current sensor; the analog load resistor can be composed of a power resistor with a response resistance value selected according to the measured ignition current; the analog ignition contact can be designed according to the type of interference bomb to be specifically tested; the analog delivery unit is connected in series with the analog ignition contact and the analog load resistor by a program-controlled switch, and can be composed of a power field effect transistor or a relay.

[0061] In this embodiment, the pulse acquisition unit can control and collect multiple analog bomb units and analog delivery units.

[0062] 1) Use an isolation MOS drive circuit and an NMOS transistor as a low-side program-controlled switch, and use the IO port of the pulse acquisition unit to control the switching of n analog load resistor circuits to achieve analog delivery.

[0063] 2) Use a Hall current sensor to collect the current of n analog load resistor circuits, and transmit the collected data back to the processor in the form of an I2C bus.

[0064] 3) Use an isolation operational amplifier as a comparator to introduce the pulse signals of n analog load resistor circuits into the input capture IO of the pulse acquisition unit to achieve pulse signal acquisition.

[0065] Other parts of this embodiment are the same as those of the above-mentioned Embodiment 1, so they will not be elaborated here.

[0066] Embodiment 3:

[0067] On the basis of any one of the above-mentioned Embodiment 1 - Embodiment 2, as Figure 2 shown, the specific structure of the pulse acquisition unit will be described.

[0068] The pulse acquisition unit includes a processor and a human-computer interaction unit;

[0069] The processor includes a PS end and a PL end;

[0070] The input terminal of the human-computer interaction unit inputs a test mode instruction, and the output terminal is connected to the PS end of the processor through an SPI bus;

[0071] The PL side of the processor is connected to the isolation operational amplifier comparator and the isolation driver through the IO interface.

[0072] Further, the human-computer interaction unit includes a touch screen control chip, an RTC chip, and an EEPROM storage chip;

[0073] One end of the touch screen chip inputs a test mode instruction, and the other end is connected to the RTC chip through the SPI bus;

[0074] One end of the EEPROM storage chip is connected to the RTC chip through the SPI bus, and the other end is connected to the PS side of the processor through the SPI bus.

[0075] Further, the pulse acquisition unit further includes an I2C bus isolator;

[0076] One end of the I2C bus isolator is connected to the Hall sensor, and the other end is connected to the PL side of the processor.

[0077] Further, the pulse acquisition unit further includes an ADC chip;

[0078] One end of the ADC chip is connected to the output end of the Hall sensor, and the other end is connected to the PL side of the processor through the SPIP bus.

[0079] Working principle: The pulse acquisition unit set in this embodiment is composed of a processor, a memory, and a touch screen. The processor receives the test mode instruction input by the user from the touch screen and starts to control the program-controlled switch of the delivery unit to perform a full-process test on the analog projectile unit, receives the current, pulse width, and phase difference collected by the analog projectile unit, calculates and judges whether it meets the self-check requirements or the delivery requirements, controls the delivery unit to perform an analog delivery again according to the calculation result, packages the test result as a log and stores it in the memory, and displays it in real time through the touch screen to feedback to the user.

[0080] This embodiment uses the SPI bus to serially connect the RTC clock chip, the EEPROM memory, and the touch screen. Among them, the RTC clock chip reads and writes to realize the real-time time reading, the EEPROM memory reads and writes to realize the test data storage, and the touch screen reads and writes to realize the human-computer interaction.

[0081] Considering that this embodiment needs to collect multiple pulse signals at the same time, occupies more IO ports, and has a high real-time requirement, the present invention selects the chip of the ZYNQ platform as the processor.

[0082] 1) The PS side of the ZYNQ processor is mainly used for functions with relatively low real-time requirements but relatively high computing power requirements such as human-computer interaction, data storage, and communication with the device under test of the test equipment;

[0083] 2) Connecting an external DDR to the PS side to increase the memory can adapt to the real-time operating system;

[0084] 3) The QSPI FLASH chip is used as the system storage disk to load the system files of the PS and PL of ZYNQ;

[0085] 4) One of the SPI buses on the PS side externally connects an AT25M02 as an EEPROM storage chip to store the test data log, externally connects a DS1306 as an RTC chip to provide a real-time clock for the system, and externally connects a TSC2046 touch screen control chip to control the touch screen to provide a human-computer interaction interface for users;

[0086] 5) The UART port of the PS externally connects a MAX3491 to convert it into an RS422 signal to complete 422 communication with the device under test;

[0087] 6) The PL side of the ZYNQ processor is mainly used for functions that require a large number of physical IO ports and high real-time requirements, such as collecting pulse signals, collecting current signals, and controlling programmable switches of the test device, and sending the collected signals back to the PS side for processing and calculation using the unique AUX bus of ZYNQ;

[0088] 7) The PL side externally connects a 16-channel ADC chip AD7606 to collect the voltage value converted from the current value collected by the Hall current sensor TMCS1107;

[0089] 8) The PL side externally connects an optocoupler chip TLP281 to isolate and collect the pulse signal;

[0090] 9) The PL side externally connects an optocoupler chip TLP281 to isolate and drive the programmable switch NMOS transistor.

[0091] The other parts of this embodiment are the same as any one of the above-mentioned Embodiment 1 - Embodiment 2, so they will not be elaborated here.

[0092] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention falls within the protection scope of the present invention.

Claims

1. An automatic test system for a passive interference delivery system, connected to an analog ignition contact; characterized in that, It includes a pulse acquisition unit, a simulated projectile unit, and a simulated delivery unit; The input end of the pulse acquisition unit inputs a test mode instruction and is connected to the output end of the simulated projectile unit; the output end of the pulse acquisition unit is connected to the input end of the simulated delivery unit; The input end of the simulated projectile unit is connected to a simulated ignition contact; The input end of the simulated delivery unit is connected to a simulated ignition contact, and the output end of the simulated delivery unit is connected to the simulated projectile unit; The simulated projectile unit is used to collect pulse signals and current signals from the simulated ignition contact; The pulse acquisition unit is used to generate a simulated delivery signal from the input test mode instruction and the pulse signal obtained from the simulated projectile unit; The simulated delivery unit is used to perform turn-off and turn-on operations according to the simulated delivery signal to achieve simulated delivery.

2. The automatic test system for a passive interference delivery system according to claim 1, characterized in that The simulated projectile unit includes a pulse acquisition unit, a current acquisition unit, and a simulated load resistor; The pulse acquisition unit includes an isolation operational amplifier comparator; the current acquisition unit includes a Hall sensor; The input end of the isolation operational amplifier comparator is connected to the positive output end of the simulated ignition contact, and the output end of the isolation operational amplifier comparator is connected to the input end of the isolation operational amplifier comparator; One end of the simulated load resistor is connected between the input end of the isolation operational amplifier comparator and the positive output end of the simulated ignition contact, and the other end of the simulated load resistor is connected between the input end of the Hall sensor and the output end of the simulated delivery unit; The input end of the Hall sensor is connected between the simulated load resistor and the output end of the simulated delivery unit, and the output end of the Hall sensor is connected to the input end of the isolation operational amplifier comparator.

3. The automatic test system for a passive interference delivery system according to claim 2, wherein, The delivery unit includes an NMOS transistor and an isolation driver; The gate of the NMOS transistor is connected to the output end of the isolation driver, the drain of the NMOS transistor is connected to the isolation operational amplifier comparator and the Hall sensor, and the source of the NMOS transistor is connected to the negative output end of the simulated ignition contact; The input end of the isolation driver is connected to the output end of the pulse acquisition unit.

4. The automatic test system for a passive interference delivery system according to claim 3, wherein The pulse acquisition unit includes a processor and a human-machine interaction unit; The processor includes a PS end and a PL end; The input end of the human-machine interaction unit inputs a test mode instruction, and the output end is connected to the PS end of the processor through an SPI bus; The PL end of the processor is connected to the isolation operational amplifier comparator and the isolation driver through an IO interface.

5. The automatic test system for a passive interference dispensing system according to claim 4, characterized in that, The human-machine interaction unit includes a touch screen control chip, an RTC chip, and an EEPROM storage chip; One end of the touch screen chip inputs a test mode instruction, and the other end is connected to the RTC chip through an SPI bus; One end of the EEPROM storage chip is connected to the RTC chip through an SPI bus, and the other end is connected to the PS end of the processor through an SPI bus.

6. The automatic test system for a passive interference delivery system according to claim 4, wherein The pulse acquisition unit further includes an I2C bus isolator; One end of the I2C bus isolator is connected to the Hall sensor, and the other end is connected to the PL end of the processor.

7. An automatic test system for a passive interference delivery system according to claim 4, characterized in that, The pulse acquisition unit further includes an ADC chip; One end of the ADC chip is connected to the output end of the Hall sensor, and the other end is connected to the PL end of the processor through the SPI bus.

8. The automatic test system for a passive interference dispensing system according to any one of claims 1-7, characterized in that A plurality of the analog bomb units and the analog delivery units are provided.

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