CN114487661A - Electromagnetic environment adaptability boundary test system based on typical circuit - Google Patents
Electromagnetic environment adaptability boundary test system based on typical circuit Download PDFInfo
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- CN114487661A CN114487661A CN202210021452.2A CN202210021452A CN114487661A CN 114487661 A CN114487661 A CN 114487661A CN 202210021452 A CN202210021452 A CN 202210021452A CN 114487661 A CN114487661 A CN 114487661A
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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
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
- G01R31/002—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing where the device under test is an electronic circuit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
Abstract
The invention discloses an electromagnetic environment adaptability boundary test system based on a typical circuit, which comprises: the interference signal generating module comprises a first radio frequency source and a second radio frequency source, wherein the first radio frequency source and the second radio frequency source are used for generating different types of interference signals and outputting the interference signals to the signal combining device; the signal combination device is used for combining signals generated by the first radio frequency source and the second radio frequency source, amplifying the power and transmitting the power amplified signals to the current injection module; and the current injection module is used for outputting the signal input by the signal combination device to the typical circuit system sensitivity detection simulation device through a lead to carry out interference simulation so as to acquire the electromagnetic environment adaptability boundary of the typical circuit system. The invention can obtain the electromagnetic environment adaptability boundary of the typical circuit system, and is convenient for analyzing the electromagnetic environment adaptability of the complex system with the typical circuit system.
Description
Technical Field
The invention belongs to the technical field of electromagnetic compatibility, and particularly relates to an electromagnetic environment adaptability boundary test system based on a typical circuit.
Background
In a complex electromagnetic environment, electronic equipment faces more and more complex electromagnetic compatibility problems, and brings serious threats to our lives, industrial production and national defense safety. When faced with these problems of electromagnetic compatibility, the sensitive mechanism of the device is not clear, and only one solution is found. The sensitive phenomenon is difficult to capture in equipment test, a large number of tests are needed, and in addition, the external environment is complex and various, and the real-time electromagnetic environment in the disturbed state of the equipment is difficult to simulate, so that the test is complex, the cost is high, and the accuracy is lacked. Moreover, few researches on a sensitive model of a circuit system are conducted at home and abroad, and the electromagnetic sensitivity characteristic of some typical circuit systems is not clear. From a functional point of view, an electronic system device is composed of a plurality of sub-circuits, such as a control system, a detection system, a positioning system, a GSM communication system, etc.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an electromagnetic environment adaptability boundary test system based on a typical circuit, which can obtain the electromagnetic environment adaptability boundary of the typical circuit system and is convenient for analyzing the electromagnetic environment adaptability of the typical circuit system.
The purpose of the invention is realized by the following technical scheme: a boundary test system based on electromagnetic environment adaptability of typical circuit, including generating module of the interference signal, signal combining device, current injection module and typical circuit system sensibility detect the analog device;
the interference signal generating module comprises a first radio frequency source and a second radio frequency source, wherein the first radio frequency source and the second radio frequency source are used for generating different types of interference signals and outputting the interference signals to the signal combining device; the signal combination device is used for combining signals generated by the first radio frequency source and the second radio frequency source, amplifying the power and transmitting the power amplified signals to the current injection module; and the current injection module is used for outputting the signal input by the signal combination device to the sensitivity detection simulation device of the typical circuit system through a lead to carry out interference simulation, so that the electromagnetic environment adaptability boundary of the typical circuit system is obtained. The method provides basis for the adaptability prediction of the typical circuit system in the unknown electromagnetic environment, and also provides basis for the adaptability prediction and analysis of the complex system equipment containing the typical circuit in the complex electromagnetic environment.
Furthermore, the signal combination device comprises a first signal combination port, a second signal combination port, a combiner, a power amplifier and a combination output port; one input of the combiner is connected to the output end of the first radio frequency source through a first signal combination port, the other input of the combiner is connected to the output end of the second radio frequency source through a second signal combination port, the output end of the combiner is connected to a combination output port through a power amplifier, and the combination output port is connected with the current injection module.
Furthermore, the current injection module comprises a current injection probe and a current probe clamp, the current injection probe is connected with the output end of the signal combination device, and the current injection probe is arranged in the current probe clamp;
the current clamp probe is provided with a cable and a clamp port, the current clamp probe injects interference signals into the cable and transmits the interference signals to the clamp port through the cable, and the clamp port transmits the interference signals to a typical circuit system sensitivity detection simulation device through a lead.
Further, the typical circuit system sensitivity detection simulation device comprises a central control system, a liquid crystal touch display module, a motor control system, a laser detection system, a communication system and a positioning system;
the central control system is respectively connected with the liquid crystal touch display module, the motor control system, the laser detection system, the communication system and the positioning system; the liquid crystal touch display module is used for controlling the motor control system, the laser detection system, the communication system and the positioning system through the central control system, collecting information of the motor control system, the laser detection system, the communication system and the positioning system through the central control system, and displaying the information on the touch display module;
the current injection module is also respectively connected with the motor control system, the laser detection system, the communication system and the positioning system through leads and is used for injecting interference signals;
when the electromagnetic environment adaptability boundary test is carried out, signals generated by the first radio frequency source and the second radio frequency source are combined, or an interference signal is generated by one of the first radio frequency source and the second radio frequency source, and after the interference signal passes through the signal combination device, an interference signal required by the test is generated; because the first radio frequency source and the second radio frequency source can generate different types of interference signals, actually, after a single radio frequency source or two radio frequency source signals are combined, a plurality of interference signals required by testing are obtained;
for each interference signal required by the test, injecting the interference signal into a motor control system, a laser detection system, a communication system and a positioning system through a current injection module respectively to obtain a sensitive threshold of the motor control system, the laser detection system, the communication system or the positioning system under the signal required by the test, namely the electromagnetic environment adaptability boundary of the signal required by the test; the sensitivity threshold refers to the interference signal level causing system abnormality.
The motor control system comprises a driver and a stepping motor, wherein the control input end of the driver is connected with the central control system, and the output end of the driver is connected with the stepping electrode; and the current injection module is connected to a connecting channel between the control input end of the driver and the central control system through a wire.
The laser ranging system comprises a laser ranging module and a shielding object arranged on a ranging path and used for manually adjusting the distance, the control input end of the laser ranging module is connected with the central control system, and the current injection module is connected to the control input end of the laser ranging module and a connecting channel of the central control system through a lead.
The positioning system comprises a positioning module and a positioning antenna, one end of the positioning module is connected with the central control system, the other end of the positioning module is connected with the positioning antenna, and the current injection module is connected to a connecting channel between the positioning module and the central control system through a wire;
the positioning module is a GPS positioning module or a Beidou positioning module; correspondingly, the positioning antenna is a GPS antenna or a Beidou antenna.
The communication system comprises a GSM communication module and a communication antenna, one end of the GSM communication module is connected with the GSM antenna, the other end of the GSM communication module is connected with the central control system, and the current injection module is connected to a connecting channel between the GSM communication module and the central control system through a wire.
The beneficial effects of the invention are: the invention can obtain the electromagnetic environment adaptability boundary of the typical circuit system, and is convenient for analyzing the electromagnetic environment adaptability of the typical circuit system; in order to ensure the consistency of the position of the current probe for injecting the cable and the energy of the injected signal and ensure the repeatability of the experiment, the current probe clamp designed by the invention can conveniently and quickly access different circuit systems and can ensure the consistency of the injection position and the injection energy of the current injection probe.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a diagram of an interference signal generating module;
FIG. 3 is a functional block diagram of a signal combining module;
FIG. 4 is a front and rear view of the signal combining device;
FIG. 5 is a schematic diagram of an exemplary circuitry sensitivity detection simulation apparatus;
FIG. 6 is a schematic block diagram of an exemplary circuitry sensitivity detection simulation apparatus.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
In the present application, the boundary test of electromagnetic environment adaptability of typical circuit system is developed in the microwave darkroom 9, as shown in fig. 1, an electromagnetic environment adaptability boundary test system based on typical circuit includes an interference signal generating module, a signal combining device 4, a current injection module and a typical circuit system sensitivity detection simulation device 5;
the interference signal generating module comprises a first radio frequency source 1 and a second radio frequency source 2, wherein the first radio frequency source and the second radio frequency source are used for generating interference signals of different types and outputting the interference signals to a signal combining device 4; the signal combination device 4 is used for combining signals generated by the first radio frequency source and the second radio frequency source, amplifying the power and transmitting the power to the current injection module; and the current injection module is used for outputting the signal input by the signal combination device to the typical circuit system sensitivity detection simulation device 5 through a lead to carry out interference simulation, so that the electromagnetic environment adaptability boundary of the typical circuit system is obtained. The method provides basis for the adaptability prediction of the typical circuit system in the unknown electromagnetic environment, and also provides basis for the adaptability prediction and analysis of the complex system equipment containing the typical circuit in the complex electromagnetic environment.
Specifically, different types of interference signals (single-frequency sinusoidal signals, pulse amplitude modulation signals with different duty ratios, pulse modulation signals with different pulse periods, sinusoidal frequency modulation signals with different frequency offsets, and the like) are generated by the interference signal generation module (the radio frequency source 1 and the radio frequency source 2), then, the generated interference signals 1 and 2 are combined through the port 4-1 and the port 4-2 in the signal combination module 4, power amplification is performed through the signal combination device, and the combined interference signals are output to the current injection probe 6 through the port 4-3 of the signal combination device. The current injection probe 6 is placed in the current probe holder 7, injects an interference signal into the cable 7-1, and outputs to each circuit system (the control module 5-1, the detection module 5-2, the communication module 5-3, the positioning module 5-4) in the typical circuit system sensitivity detection analog device 5 through the port 7-2 of the current injection probe holder. Finally, the situation that different circuit systems are subjected to electromagnetic interference is reflected through the rotation of the motor 5-6 and the display states of different modules in the liquid crystal display 5-5, and then the electromagnetic environment adaptability boundary of the typical circuit system is simulated and analyzed, so that a basis is provided for the adaptability prediction of the typical circuit system in an unknown electromagnetic environment.
In some embodiments, the specific conducted sensitivity test is tested with reference to conducted sensitivity test CS114 of GJB151B, the signal generator and amplifier are changed to an interference signal generation module and a signal combination module, the injection probe is placed in the designed probe clamp 7, and the typical circuitry module is taken as the EUT device under test.
The different types of interference signals comprise single-frequency sinusoidal signals, pulse amplitude modulation signals with different duty ratios, pulse modulation signals with different pulse periods and sinusoidal frequency modulation signals with different frequency offsets.
As shown in fig. 2, the interference signal is simulated by a single-frequency sinusoidal signal, pulse amplitude modulation signals with different duty ratios, pulse modulation signals with different pulse periods, sinusoidal frequency modulation signals with different frequency offsets, pulse modulation signals with different modulation depths, and sinusoidal wave amplitude modulation signals … … with different modulation frequencies generated by two radio frequency sources. The signals 1 and 2 generated by the two radio frequency sources are combined, or the signal generated by a single radio frequency source is used as an interference signal, so that the sensitive threshold characteristics of a motor control system, a detection system, a communication system and a positioning system under different interference signals can be obtained. And the four typical circuit systems are more sensitive to interference, so that a sensitivity model (time proportion type, undisturbed time type, disturbed time type, peak value type and power type) of the typical circuit systems is established, and the electromagnetic environment adaptability of complex system equipment comprising the typical circuit systems is further evaluated.
The signal combination device comprises a first signal combination port 4-1, a second signal combination port 4-2, a combiner, a power amplifier and a combination output port 4-3; one input of the combiner is connected to the output end of the first radio frequency source through a first signal combination port, the other input of the combiner is connected to the output end of the second radio frequency source through a second signal combination port, the output end of the combiner is connected to a combination output port through a power amplifier, and the combination output port is connected with the current injection module.
The principle of the signal combination device is shown in fig. 3, the signal combination module can combine and amplify the interference signals 1 and 2 input by two radio frequency sources through the signal combination device, and finally output the interference signal 3 through a port; in an embodiment of the present application, a front view and a rear view of the signal combining device are shown in fig. 4. The window 4-4 of the rear view is a heat dissipation and air exhaust window, and the port 4-5 is an access port of 220V alternating current commercial power.
The current injection module comprises a current injection probe and a current probe clamp, the current injection probe is connected with the output end of the signal combination device, and the current injection probe is arranged in the current probe clamp; the current clamp probe is provided with a cable and a clamp port, the current clamp probe injects interference signals into the cable and transmits the interference signals to the clamp port through the cable, and the clamp port transmits the interference signals to a typical circuit system sensitivity detection simulation device through a lead.
In the embodiment of the application, the interference signal is injected onto the cable through the current probe, and the cable is led out of the external port from the port 7-2 of the current probe clamp. The injection line is connected to each typical circuit system through an external port 7-2. The design can ensure that the system can be conveniently and quickly switched when conducting sensitivity experiments are carried out on different typical circuit systems, the consistency of the position and the height of the current probe injected into the cable can be ensured, and the repeatability of the experiments can be ensured.
Further, the typical circuit system sensitivity detection simulation device comprises a central control system, a liquid crystal touch display module, a motor control system, a laser detection system, a communication system and a positioning system;
the central control system is respectively connected with the liquid crystal touch display module, the motor control system, the laser detection system, the communication system and the positioning system; the liquid crystal touch display module is used for controlling the motor control system, the laser detection system, the communication system and the positioning system through the central control system, collecting information of the motor control system, the laser detection system, the communication system and the positioning system through the central control system, and displaying the information on the touch display module;
the current injection module is also respectively connected with the motor control system, the laser detection system, the communication system and the positioning system through leads and is used for injecting interference signals;
when the electromagnetic environment adaptability boundary test is carried out, signals generated by the first radio frequency source and the second radio frequency source are combined, or an interference signal is generated by one of the first radio frequency source and the second radio frequency source, and after the interference signal passes through the signal combination device, an interference signal required by the test is generated; because the first radio frequency source and the second radio frequency source can generate different types of interference signals, actually, after a single radio frequency source or two radio frequency source signals are combined, a plurality of interference signals required by testing are obtained;
for each interference signal required by the test, injecting the interference signal into a motor control system, a laser detection system, a communication system and a positioning system through a current injection module respectively to obtain a sensitive threshold of the motor control system, the laser detection system, the communication system or the positioning system under the signal required by the test, namely the electromagnetic environment adaptability boundary of the signal required by the test; the sensitivity threshold refers to the interference signal level causing system abnormality.
The motor control system comprises a driver and a stepping motor, wherein the control input end of the driver is connected with the central control system, and the output end of the driver is connected with the stepping electrode; and the current injection module is connected to a connecting channel between the control input end of the driver and the central control system through a wire.
The laser ranging system comprises a laser ranging module and a shielding object arranged on a ranging path and used for manually adjusting the distance, the control input end of the laser ranging module is connected with the central control system, and the current injection module is connected to the control input end of the laser ranging module and a connecting channel of the central control system through a lead.
The positioning system comprises a positioning module and a positioning antenna, one end of the positioning module is connected with the central control system, the other end of the positioning module is connected with the positioning antenna, and the current injection module is connected to a connecting channel between the positioning module and the central control system through a wire;
the positioning module is a GPS positioning module or a Beidou positioning module; correspondingly, the positioning antenna is a GPS antenna or a Beidou antenna.
The communication system comprises a GSM communication module and a communication antenna, one end of the GSM communication module is connected with the GSM antenna, the other end of the GSM communication module is connected with the central control system, and the current injection module is connected to a connecting channel between the GSM communication module and the central control system through a wire.
A typical circuitry sensitivity detection simulation device is shown in fig. 5. Each of the circuitry in the exemplary circuitry sensitivity detection simulation apparatus 5 includes: the device comprises a motor control system module 5-1, a laser detection module 5-2, a communication module 5-3 and a positioning module 5-4. The port 7-2 of the current probe clamp outputs the coupled interference signal, and the interference signal is connected into the test interfaces 5-1-2, 5-2-2, 5-3-2 and 5-4-2 of each typical system through a lead 8. At this time, the test switches (5-1-1, 5-2-1, 5-3-1, 5-4-1) are in an off state, the coupled cables are not connected to the typical circuit systems, and the test switches (5-1-1, 5-2-1, 5-3-1, 5-4-1) are required to be switched on to connect the interference signals to the typical circuit systems. When the system is disturbed and stops working, the central control reset key needs to be pressed to realize the restart of the system. The liquid crystal display module 5-5 can realize the control of several states of positive and negative rotation, accelerated rotation, decelerated rotation and stalling of the motor through a motor control system interface. The rotation state of the motors 5-6 can be observed in real time. The laser detection modules 5-7 can measure the distance of the shielding object and display the measured distance on the liquid crystal display in real time. In the rear panel of the sensitivity detection analog device of a typical circuit system, external short messages can be received through the GSM antenna 5-12 and the SIM card 5-1 of the SD card slot and displayed on the liquid crystal display screen. The Beidou/GPS antenna 5-13 can realize the positioning of the satellite and display the longitude and latitude information of the positioning to the positioning module of the liquid crystal display.
An internal block diagram of a typical circuitry sensitivity detection simulation device is shown in fig. 6.
The motor control system selects a two-phase stepping motor driver and a 86 stepping motor. The connection mode of the motor driver, the stepping motor and the central control system is as follows: six ports of ENA- (ENA), ENA + (+5V), DIR- (DIR), DIR + (+5V), PUL- (PUL) and PUL + (+5V) of the driver are correspondingly connected with VOUT1, PC2, VOUT1, PC0, VOUT1 and PC7 ports of the central control system respectively; b-, B +, A-and A + of the high-voltage port part of the driver are respectively connected with a control line of the stepping motor, and GND and VCC of the driver are connected with a 24V direct-current stabilized power supply. The connection line of the drivers ENA- (ENA) and VOUT1 of the control system is connected into the test interface 5-1-2, connected with the clamp interface 7-2 of the external current injection module, and injects interference signals through the connection line.
Simulation of sensitivity detection of the exemplary circuitryThe laser detection module in the device is a VL53L0X laser ranging module, a pulse laser ranging technology is adopted, firstly a laser transmitter transmits periodic pulse laser signals, and then a detection array unit detects laser pulse signals diffusely reflected by a barrier. The time when the laser transmitter emits the pulse signal ist 1The time when the laser receiver receives the echo signal ist 2The distance between the laser ranging module and the shielding object isLThe speed of light propagation in air iscThen distance measured by laser ranging moduleLThe expression of (a) is:L=(c(t 2-t 1))/2. The VCC end of the laser ranging module is connected with a 5V power port of the central control system circuit, the GND of the laser ranging module is connected with a GND port of the central control circuit system, an SDA port of the laser ranging module is connected with a USART3_ TX (PB 10) port of the central control circuit system, an SCL port of the laser ranging module is connected with a USART3_ RX (PB 11) port of the central control circuit system, an INT port of the laser ranging module is connected with a PA4 port of the central control circuit system, an XSH port of the laser ranging module is connected with a PA15 port of the central control circuit system, a connecting line of an XSH port of the laser ranging module and the PA15 port of the central control circuit system is connected into a test interface 5-2-2 of the laser ranging module, and is connected with a clamp interface 7-2 of an external current injection module. In the test, the working state of the module is judged by constantly changing the distance between the shielding object and the laser ranging module and observing the indication change of the liquid crystal display, and when the liquid crystal display distance is abnormal, the system is proved to be sensitive to disturbance.
An ATK-SIM800C module is selected as the communication module, an SIM card is inserted into an SD card slot 5-14 of the module, and the communication module is connected with a power interface DC _ IN of the communication module through an external 12V direct current stabilized power supply to realize power supply to the module, and the module can be started and shut down through a start/shut down button (PWR _ KEY). The communication ports of SIM800C (i.e., STXD connected to RRXD and SRXD connected to RTXD) are connected via RS232 serial ports. And a signal line in the RS232 serial port is accessed to the test interface 5-3-2, is connected with the clamp interface 7-2 of the external current injection module, and injects interference signals through the connecting line.
The GPS/Beidou positioning system selects a GPS/Beidou double-positioning module, the module is connected with the central control system by at least 4 lines, 5V VCC and GND in the central control version are used for supplying power to the positioning module and are connected with the VCC and GND of the positioning module, and the modules TXD and RXD are connected with PA3(RX) and PA2(TX) of the single chip microcomputer. The TXD end of the positioning module and a connecting line of a PA3(RX) of the central control system are connected into a test interface 5-4-2, connected with a clamp interface 7-2 of an external current injection module, and interference signals are injected through the connecting line.
The liquid crystal touch display module is a high-performance 4.3-inch capacitive touch screen module provided by ALIENTEK and used for displaying and controlling the working state of each typical circuit system module. When the motor control module is in a normal working state, the rotation speed regulation and control of the motor and the forward/reverse rotation regulation and control can be realized manually through the liquid crystal display, and when the motor control module is injected with an interference signal, and the rotation speed of the motor is abnormal or even stops rotating, at the moment, the liquid crystal display screen cannot manually control the motion state of the motor, the motor control module is proved to be sensitive to electromagnetic interference, the characteristics of the interference signal generated by the radio frequency source module are recorded, and a sensitive threshold value is recorded; when the laser ranging module is in a normal working state, the liquid crystal display can display the real-time distance between the moving shelter and the ranging module, and when the laser ranging module is injected with an interference signal, the data value measured on the liquid crystal display is stuck and cannot be changed, which indicates that the laser ranging module is sensitive to electromagnetic interference, the characteristics of the interference signal generated by the radio frequency source module are recorded, and a sensitive threshold value is recorded; when the communication module is in a normal working state, the liquid crystal display can display received information and the GSM module can normally talk, and when the information displayed on the liquid crystal display is abnormal and the GSM module is abnormal in talking, the communication module is sensitive to electromagnetic interference, and at the moment, the characteristics of an interference signal generated by the radio frequency source module are recorded and a sensitive threshold value is recorded; the positioning module is in a normal working state, the liquid crystal display screen can normally display the longitude and latitude of a local area and the number of satellites of the airspace, the liquid crystal display screen cannot display the local longitude and latitude information under the state that the positioning module is injected with interference signals, and the number of the satellites of the airspace is also lost in a large amount, so that the positioning module is sensitive to electromagnetic interference, and at the moment, the characteristics of the interference signals generated by the radio frequency source module are recorded, and the corresponding sensitive threshold value is recorded.
By designing the detection simulation device of the typical circuit system, the electromagnetic environment adaptability boundary of the typical circuit system can be obtained, a sensitive model of the typical circuit system is conveniently established, and the electromagnetic environment adaptability of complex system equipment with the typical circuit system is further analyzed. The invention provides a basis for researching the electromagnetic environment adaptability of typical circuit systems and complex system equipment.
In embodiments of the present application, the test method is tested with reference to conducted sensitivity test CS114 of GJB 151B. The signal generator and amplifier are changed to an interference signal generating module and a signal combining module, the injection probe is placed in a designed probe holder 7, and a typical circuit system module is used as an EUT device under test. The test apparatus involved comprises:
a) a measurement receiver.
b) And (4) injecting the probe.
c) The probe is monitored.
d) The checking device is a coaxial transmission line with 50 omega characteristic impedance. The two ends of the probe are coaxial connectors, and the periphery of the central conductor provides enough space for the checking injection probe.
e) A directional coupler.
f) A signal generator (interference signal generating module).
g) Attenuator, 50 Ω.
h) Coaxial load, 50 Ω.
i) Power amplifier (replaced by signal combining means).
j）LISN。
And (4) carrying out test scene configuration, and selecting a prototype, a simulation sample or a standard receiving device by the EUT according to the situation. The verification process is as follows:
1) clamping the injection probe on a central conductor of the checking device;
2) one end of the checking device is connected with a 50 omega load, and the other end of the checking device is connected to the measuring receiver A through an attenuator.
The EUT was tested as follows:
1) the injection probe and the monitoring probe are clamped on a cable bundle connected with the EUT connector.
2) To reduce errors, the same test configuration (receiver, coaxial cable, feed-through connector, additional attenuator, etc.) as the calibration is used to connect to the monitoring probe. Attenuation can be increased if desired.
3) The monitoring device probe is arranged at a distance of 5 cm from the EUT connector, and if the total length of the connector and the housing thereof exceeds 5 cm, the monitoring probe is close to the housing of the connector as much as possible.
4) And placing the injection probe at a distance of 5 cm from the monitoring probe.
For each cable bundle terminated by each connector on the EUT, the following procedure was followed:
1) the EUT is energized to preheat and reach a stable operating state.
2) The signal generator is adjusted to 10kHz to generate a single frequency point signal.
3) Scanning in a test frequency range, for each frequency point, increasing output power to the maximum power sensitive to equipment or capable of generating the equipment, if the sensitivity occurs, firstly reducing the interference signal level until the EUT returns to normal, secondly continuously reducing the interference signal level by 6dB, and then gradually increasing the interference signal level until the sensitivity phenomenon just repeatedly occurs, wherein the interference signal level is the sensitivity threshold.
4) Repeating steps 2) -3) for each cable bundle connected to other connectors of the EUT.
In summary, the invention provides an electromagnetic environment adaptability boundary test system based on a typical circuit system, which adopts various types of interference signals and combined signals thereof as injection signals for sensitivity test, and can expand the types of injection sensitivity test signals of CS144 in GJB 151B-2013. Moreover, sensitive models of several typical circuit systems can be obtained preliminarily through the test method, and a new evaluation prediction method is provided for the electromagnetic environment adaptability of complex system equipment containing the typical circuit systems. The invention provides a basis for researching the electromagnetic environment adaptability of typical circuit systems and complex system equipment.
The current injection probe clamp designed by the invention can be switched into different test systems in a direct plugging mode without repeatedly re-lapping cables and equipment and repeatedly verifying, provides a quick setting-up mode for testing electromagnetic environment adaptability boundaries of various typical circuit systems, and can effectively ensure the repeatability of experiments.
While the foregoing description shows and describes a preferred embodiment of the invention, it is to be understood, as noted above, that the invention is not limited to the form disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and may be modified within the scope of the inventive concept described herein by the above teachings or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. An electromagnetic environment adaptive boundary test system based on a typical circuit, which is characterized in that: the device comprises an interference signal generation module, a signal combination device, a current injection module and a typical circuit system sensitivity detection analog device;
the interference signal generating module comprises a first radio frequency source and a second radio frequency source, wherein the first radio frequency source and the second radio frequency source are used for generating different types of interference signals and outputting the interference signals to the signal combining device; the signal combination device is used for combining signals generated by the first radio frequency source and the second radio frequency source, amplifying the power and transmitting the power amplified signals to the current injection module; and the current injection module is used for outputting the signal input by the signal combination device to the sensitivity detection simulation device of the typical circuit system through a lead to carry out interference simulation, so that the electromagnetic environment adaptability boundary of the typical circuit system is obtained.
2. The electromagnetic environment adaptive boundary test system based on the typical circuit as claimed in claim 1, wherein: the different types of interference signals comprise single-frequency sinusoidal signals, pulse amplitude modulation signals with different duty ratios, pulse modulation signals with different pulse periods and sinusoidal frequency modulation signals with different frequency deviations.
3. The electromagnetic environment adaptive boundary test system based on the typical circuit as claimed in claim 1, wherein: the signal combination device comprises a first signal combination port, a second signal combination port, a combiner, a power amplifier and a combination output port; one input of the combiner is connected to the output end of the first radio frequency source through a first signal combination port, the other input of the combiner is connected to the output end of the second radio frequency source through a second signal combination port, the output end of the combiner is connected to a combination output port through a power amplifier, and the combination output port is connected with the current injection module.
4. The electromagnetic environment adaptive boundary test system based on the typical circuit as claimed in claim 1, wherein: the current injection module comprises a current injection probe and a current probe clamp, the current injection probe is connected with the output end of the signal combination device, and the current injection probe is arranged in the current probe clamp;
the current clamp probe is provided with a cable and a clamp port, the current clamp probe injects interference signals into the cable and transmits the interference signals to the clamp port through the cable, and the clamp port transmits the interference signals to a typical circuit system sensitivity detection simulation device through a lead.
5. The electromagnetic environment adaptive boundary test system based on the typical circuit as claimed in claim 1, wherein: the typical circuit system sensitivity detection simulation device comprises a central control system, a liquid crystal touch display module, a motor control system, a laser detection system, a communication system and a positioning system;
the central control system is respectively connected with the liquid crystal touch display module, the motor control system, the laser detection system, the communication system and the positioning system; the liquid crystal touch display module is used for controlling the motor control system, the laser detection system, the communication system and the positioning system through the central control system, collecting information of the motor control system, the laser detection system, the communication system and the positioning system through the central control system, and displaying the information on the touch display module;
the current injection module is also respectively connected with the motor control system, the laser detection system, the communication system and the positioning system through leads and is used for injecting interference signals;
when the electromagnetic environment adaptability boundary test is carried out, signals generated by the first radio frequency source and the second radio frequency source are combined, or an interference signal is generated by one of the first radio frequency source and the second radio frequency source, and after the interference signal passes through the signal combination device, an interference signal required by the test is generated; because the first radio frequency source and the second radio frequency source can generate different types of interference signals, actually, after a single radio frequency source or two radio frequency source signals are combined, a plurality of interference signals required by testing are obtained;
for each interference signal required by the test, injecting the interference signal into a motor control system, a laser detection system, a communication system and a positioning system through a current injection module respectively to obtain a sensitive threshold of the motor control system, the laser detection system, the communication system or the positioning system under the signal required by the test, namely the electromagnetic environment adaptability boundary of the signal required by the test; the sensitivity threshold refers to the interference signal level causing system abnormality.
6. The electromagnetic environment adaptive boundary test system based on the typical circuit as claimed in claim 5, wherein: the motor control system comprises a driver and a stepping motor, wherein the control input end of the driver is connected with the central control system, and the output end of the driver is connected with the stepping electrode; and the current injection module is connected to a connecting channel between the control input end of the driver and the central control system through a wire.
7. The electromagnetic environment adaptive boundary test system based on the typical circuit as claimed in claim 1, wherein: the laser ranging system comprises a laser ranging module and a shielding object arranged on a ranging path and used for manually adjusting the distance, the control input end of the laser ranging module is connected with the central control system, and the current injection module is connected to the control input end of the laser ranging module and a connecting channel of the central control system through a lead.
8. The electromagnetic environment adaptive boundary test system based on the typical circuit as claimed in claim 1, wherein: the positioning system comprises a positioning module and a positioning antenna, one end of the positioning module is connected with the central control system, the other end of the positioning module is connected with the positioning antenna, and the current injection module is connected to a connecting channel between the positioning module and the central control system through a wire;
the positioning module is a GPS positioning module or a Beidou positioning module; correspondingly, the positioning antenna is a GPS antenna or a Beidou antenna.
9. The electromagnetic environment adaptive boundary test system based on the typical circuit as claimed in claim 1, wherein: the communication system comprises a GSM communication module and a communication antenna, one end of the GSM communication module is connected with the GSM antenna, the other end of the GSM communication module is connected with the central control system, and the current injection module is connected to a connecting channel between the GSM communication module and the central control system through a wire.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115575862A (en) * | 2022-09-29 | 2023-01-06 | 北京航空航天大学 | Electromagnetic sensitivity testing device and method for rotary transformer system of electric automobile |
| RU2795645C1 (en) * | 2022-10-17 | 2023-05-05 | Акционерное общество "АвтоВАЗ" | Method for testing on-board systems for remote start of motor vehicles for resistance to high-frequency electromagnetic field |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3440523A (en) * | 1965-04-02 | 1969-04-22 | Inst Francais Du Petrole | Method and apparatus for electromagnetic determination of the position of boundaries of and discontinuities in a geological formation |
| US4317214A (en) * | 1980-07-14 | 1982-02-23 | Attinello John S | Apparatus for simulating interference transmissions |
| EP0607481A1 (en) * | 1993-01-19 | 1994-07-27 | Electronic Development, Inc. | Apparatus and method for electromagnetical field susceptibility testing |
| EP0642028A1 (en) * | 1993-09-08 | 1995-03-08 | Gunter Langer | Measuring and experimenting system for sensing EMP susceptibility of electrical appliances and circuits |
| US5414366A (en) * | 1991-04-29 | 1995-05-09 | Electronic Development, Inc. | Electromagnetic field susceptibility test apparatus and methods |
| US5585808A (en) * | 1994-12-13 | 1996-12-17 | Comtest Limited | Test apparatus for testing the susceptibility of electronic equipment to electromagnetic radiation and for measuring electromagnetic radiation emitted by electronic equipment |
| US20060132117A1 (en) * | 2004-12-20 | 2006-06-22 | Thomason Gary S | Systems and methods for evaluating electromagnetic interference |
| CN101191806A (en) * | 2006-11-29 | 2008-06-04 | 比亚迪股份有限公司 | Apparatus and method for testing automobile electromagnetic sensitivity |
| US20100283481A1 (en) * | 2009-05-08 | 2010-11-11 | Lemmon Andrew N | Systems and methods for conducting emi susceptibility testing |
| CN102707170A (en) * | 2012-05-25 | 2012-10-03 | 北京航空航天大学 | Method for testing electro-magnetic compatibility of automotive CAN (controller area network) buses based on semi-physical simulation |
| CN105301410A (en) * | 2015-11-20 | 2016-02-03 | 国家电网公司 | Method and device for online detection of electromagnetic compatibility performance of intelligent assembly of transformer substation |
| CN106291189A (en) * | 2016-08-15 | 2017-01-04 | 北京航空航天大学 | A kind of undisturbed reconfigurable type multiple electromagnetic interference detecting device simulating real border and detection method |
| US20180026737A1 (en) * | 2016-07-22 | 2018-01-25 | The Directv Group, Inc. | Determining ambient noise in a device under test electromagnetic compatibility test environment |
| US20190241284A1 (en) * | 2018-02-08 | 2019-08-08 | Parker-Hannifin Corporation | Apparatus and method for testing electromagnetic interference devices within a line replaceable unit |
| CN110703022A (en) * | 2019-10-16 | 2020-01-17 | 北京经纬恒润科技有限公司 | Complex electromagnetic environment construction system, vehicle electromagnetic anti-interference test system and method |
| CN110764490A (en) * | 2019-11-08 | 2020-02-07 | 中国舰船研究设计中心 | Forced stop sensitive device threshold value testing method for high-power microwave speedboat |
| RU2732801C1 (en) * | 2020-04-06 | 2020-09-22 | Акционерное общество «АВТОВАЗ» | Method for testing lighting systems of vehicles for susceptibility to electromagnetic field |
| CN113092917A (en) * | 2021-04-12 | 2021-07-09 | 北京航空航天大学 | Method for rapidly realizing boundary test of electromagnetic environment adaptability of electronic equipment |
| CN113109648A (en) * | 2021-04-12 | 2021-07-13 | 北京航空航天大学 | Equipment electromagnetic environment adaptability boundary test system based on response equivalence |
| CN113267694A (en) * | 2021-05-19 | 2021-08-17 | 中车长春轨道客车股份有限公司 | Intelligent railway high-speed train electromagnetic compatibility prediction system |
| CN113433401A (en) * | 2021-06-01 | 2021-09-24 | 中国舰船研究设计中心 | Multi-source multi-channel complex electromagnetic environment simulation generation method |
-
2022
- 2022-01-10 CN CN202210021452.2A patent/CN114487661B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3440523A (en) * | 1965-04-02 | 1969-04-22 | Inst Francais Du Petrole | Method and apparatus for electromagnetic determination of the position of boundaries of and discontinuities in a geological formation |
| US4317214A (en) * | 1980-07-14 | 1982-02-23 | Attinello John S | Apparatus for simulating interference transmissions |
| US5414366A (en) * | 1991-04-29 | 1995-05-09 | Electronic Development, Inc. | Electromagnetic field susceptibility test apparatus and methods |
| EP0607481A1 (en) * | 1993-01-19 | 1994-07-27 | Electronic Development, Inc. | Apparatus and method for electromagnetical field susceptibility testing |
| EP0642028A1 (en) * | 1993-09-08 | 1995-03-08 | Gunter Langer | Measuring and experimenting system for sensing EMP susceptibility of electrical appliances and circuits |
| US5585808A (en) * | 1994-12-13 | 1996-12-17 | Comtest Limited | Test apparatus for testing the susceptibility of electronic equipment to electromagnetic radiation and for measuring electromagnetic radiation emitted by electronic equipment |
| US20060132117A1 (en) * | 2004-12-20 | 2006-06-22 | Thomason Gary S | Systems and methods for evaluating electromagnetic interference |
| CN101191806A (en) * | 2006-11-29 | 2008-06-04 | 比亚迪股份有限公司 | Apparatus and method for testing automobile electromagnetic sensitivity |
| US20100283481A1 (en) * | 2009-05-08 | 2010-11-11 | Lemmon Andrew N | Systems and methods for conducting emi susceptibility testing |
| CN102707170A (en) * | 2012-05-25 | 2012-10-03 | 北京航空航天大学 | Method for testing electro-magnetic compatibility of automotive CAN (controller area network) buses based on semi-physical simulation |
| CN105301410A (en) * | 2015-11-20 | 2016-02-03 | 国家电网公司 | Method and device for online detection of electromagnetic compatibility performance of intelligent assembly of transformer substation |
| US20180026737A1 (en) * | 2016-07-22 | 2018-01-25 | The Directv Group, Inc. | Determining ambient noise in a device under test electromagnetic compatibility test environment |
| CN106291189A (en) * | 2016-08-15 | 2017-01-04 | 北京航空航天大学 | A kind of undisturbed reconfigurable type multiple electromagnetic interference detecting device simulating real border and detection method |
| US20190241284A1 (en) * | 2018-02-08 | 2019-08-08 | Parker-Hannifin Corporation | Apparatus and method for testing electromagnetic interference devices within a line replaceable unit |
| CN110703022A (en) * | 2019-10-16 | 2020-01-17 | 北京经纬恒润科技有限公司 | Complex electromagnetic environment construction system, vehicle electromagnetic anti-interference test system and method |
| CN110764490A (en) * | 2019-11-08 | 2020-02-07 | 中国舰船研究设计中心 | Forced stop sensitive device threshold value testing method for high-power microwave speedboat |
| RU2732801C1 (en) * | 2020-04-06 | 2020-09-22 | Акционерное общество «АВТОВАЗ» | Method for testing lighting systems of vehicles for susceptibility to electromagnetic field |
| CN113092917A (en) * | 2021-04-12 | 2021-07-09 | 北京航空航天大学 | Method for rapidly realizing boundary test of electromagnetic environment adaptability of electronic equipment |
| CN113109648A (en) * | 2021-04-12 | 2021-07-13 | 北京航空航天大学 | Equipment electromagnetic environment adaptability boundary test system based on response equivalence |
| CN113267694A (en) * | 2021-05-19 | 2021-08-17 | 中车长春轨道客车股份有限公司 | Intelligent railway high-speed train electromagnetic compatibility prediction system |
| CN113433401A (en) * | 2021-06-01 | 2021-09-24 | 中国舰船研究设计中心 | Multi-source multi-channel complex electromagnetic environment simulation generation method |
Non-Patent Citations (2)
| Title |
|---|
| HIROSHI TSUTAGAYA 等: "A high sensitivity electromagnetic field sensor using resonance", 《2008 IEEE INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY》 * |
| 丁建锋等: "基于电子设备电磁敏感特性的信息注入模型与验证", 《通信技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115575862A (en) * | 2022-09-29 | 2023-01-06 | 北京航空航天大学 | Electromagnetic sensitivity testing device and method for rotary transformer system of electric automobile |
| CN115575862B (en) * | 2022-09-29 | 2023-06-09 | 北京航空航天大学 | Electromagnetic sensitivity testing device and method for rotary transformer system of electric automobile |
| RU2795645C1 (en) * | 2022-10-17 | 2023-05-05 | Акционерное общество "АвтоВАЗ" | Method for testing on-board systems for remote start of motor vehicles for resistance to high-frequency electromagnetic field |
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