Additional device for electromagnetic compatibility of emergency radio station communication system

Abstract

The invention belongs to the technical field of electromagnetic compatibility of radio station communication systems, and particularly relates to an additional device for electromagnetic compatibility of an emergency radio station communication system. An interface and electromagnetic interference source identification circuit, a self-adaptive filter circuit, a grounding facility integrator circuit, an electronic shielding circuit, a radio signal interference neutralization circuit, a common-mode and differential-mode interference reduction circuit, a system control and display operation circuit and the like are used; electromagnetic interference filtering, electromagnetic interference source confirmation, common-mode and differential-mode interference reduction, leakage electromagnetic interference suppression, radio interference signal neutralization and electronic shielding are carried out on single equipment, equipment and all the equipment in an emergency radio station communication system without change, so that simple and rapid electromagnetic compatibility in the system is realized.

Description

Technical Field

[0001] This invention belongs to the field of electromagnetic compatibility technology for radio communication systems, and specifically relates to an additional device for electromagnetic compatibility of an emergency radio communication system. Background Technology

[0002] Currently, various methods are used to ensure electromagnetic compatibility between transceivers and their associated electronic equipment in fixed radio communication systems. These include measures such as extensive grounding systems, numerous filtering devices, and comprehensive shielding systems, all of which effectively meet the required standards. However, temporary emergency radio communication systems, especially those established by the military during combat operations, special missions, and disaster relief, lack these advantages.

[0003] In emergency situations, achieving electromagnetic compatibility (EMC) in a system built using the methods for fixed radio communication systems presents several challenges: high cost of EMC equipment, long construction time, complex installation, operation, and maintenance, and the need to modify some existing equipment. To address these requirements and problems encountered in the construction of temporary emergency radio communication systems, particularly regarding EMC issues such as: 1. high cost of EMC equipment; 2. long construction period; 3. complex installation process; 4. complex electromagnetic radiation from diverse equipment within the system; 5. co-location of transceivers; and 6. uneven distribution of radios of varying power levels, a novel and rapid EMC-compatible device is urgently needed. Summary of the Invention

[0004] (a) Technical problems to be solved The technical problem to be solved by this invention is: Currently, various methods are used to ensure electromagnetic compatibility between transceivers and their associated electronic equipment in fixed radio communication systems. These include measures such as extensive grounding systems, numerous filtering devices, and comprehensive shielding systems, all of which effectively meet the required standards. However, temporary emergency radio communication systems, especially those established by the military during combat operations, special missions, and disaster relief, lack these advantages.

[0005] In emergency situations, achieving electromagnetic compatibility (EMC) in a system built using the methods for fixed radio communication systems presents several challenges: high cost of EMC equipment, long construction time, complex installation, operation, and maintenance, and the need to modify some existing equipment. To address these requirements and problems encountered in the construction of temporary emergency radio communication systems, particularly regarding EMC issues such as: 1. high cost of EMC equipment; 2. long construction period; 3. complex installation process; 4. complex electromagnetic radiation from diverse equipment within the system; 5. co-location of transceivers; and 6. uneven distribution of radios of varying power levels, a novel and rapid EMC-compatible device is urgently needed.

[0006] (II) Technical Solution To solve the above-mentioned technical problems, the present invention provides an additional device for electromagnetic compatibility of an emergency radio communication system. The additional device includes: an interface and electromagnetic interference source identification circuit, an adaptive filter circuit, a grounding facility integrator circuit, an electronic shielding circuit, a radio signal interference neutralization circuit, a common-mode and differential-mode interference reduction circuit, and a system control and display operation circuit. The interface and electromagnetic interference source identification circuit are used to pick up electromagnetic interference leakage signals clipped onto equipment within the communication system with high gain. When electromagnetic interference leakage is detected, the signal is immediately identified and classified as an interference type. One path is converted into a digital signal and provided to the system control and display operation circuit. The system control and display operation circuit compares the interference type with the standard interference signal source in the memory and outputs a corresponding control signal to the corresponding anti-interference module circuit. The other path directly diverts the electromagnetic interference leakage signal to the adaptive filter circuit, grounding facility integrator circuit, electronic shielding circuit, radio signal interference neutralization circuit, and common-mode and differential-mode interference reduction circuit, respectively. When the system control and display operation circuit outputs a control signal to the corresponding interference processing circuit, the corresponding interference processing circuit processes the interference signal accordingly, transforming it into a signal that does not affect other equipment or directly grounding it.

[0007] The interface and electromagnetic interference source identification circuit divert interference leakage from all radio stations or equipment within the communication system, thereby achieving electromagnetic compatibility among various devices within the communication system.

[0008] The entire emergency radio communication system can divert and process external interference signals and its own interference signals individually or in multiple ways. Depending on the number of devices equipped in the emergency radio communication system, one or more of the additional devices may be used simultaneously.

[0009] The interface and electromagnetic interference source identification circuit includes: a port allocation and access circuit, an interference signal high-gain pickup circuit, and an interference signal level spectrum shaping and digitization circuit. When the interface and electromagnetic interference source identification circuit is working, the interference signal high-gain pickup circuit first scans the leaked interference electromagnetic signals on each piece of equipment in real time, processes the signals, and sends them to the system control and display operation circuit. Under the command of the system control and display operation circuit, the port allocation and access circuit opens the output port channel and instantly closes the input port channel. Secondly, the opened output port channel connects to the corresponding interference processing circuit and connects to external equipment, ultimately realizing the pickup of input interference signals and the output connection to the anti-interference signal circuit. The adaptive filter circuit includes an electromagnetic interference filter, a radio interference filter, an analog signal filter, a digital signal filter, and an adaptive interface circuit. When the adaptive filter circuit is working, it processes interference signals from all equipment within the communication system and connects to each piece of equipment within the communication system via the adaptive interface circuit. Under the control of the system control and display operation circuit, it achieves the diversion and filtering of various interferences within the communication system. The adaptive interface circuit completes the distribution of interference signals and the switching control of each signal access. It is externally connected to the interface and electromagnetic interference source identification circuit and is controlled by the system control and display operation circuit. The electronic shielding circuit includes a synthesis interface circuit, an electrical shielding simulator circuit, a magnetic shielding simulator circuit, an electromagnetic shielding simulator circuit, a radio shielding simulator circuit, an electrostatic shielding simulator circuit, and a first synthesis interface circuit. When the electronic shielding circuit is working, it automatically drives the corresponding shielding simulator circuit according to the nature of the interference source to shield interference signals from the interface and the electromagnetic interference source identification circuit. Secondly, the system control and display operation circuit opens the corresponding shielding simulator circuit according to the nature of the interference source and connects the shielding simulator to the corresponding equipment within the communication system, thus achieving the purpose of diverting the interference signal to the corresponding shielding simulator circuit for electronic shielding. The grounding facility integrator circuit includes a multi-point grounding simulator, a hybrid grounding simulator, a floating ground discharge simulator, and a second synthesis interface circuit. When the grounding facility integrator circuit is working, the three grounding simulators analyze and calculate the required grounding resistance through their internal circuits and compare it with standard parameters. Under the control of the system control and display operation circuit, the corresponding simulator is connected to the second synthesis interface circuit. The second synthesis interface circuit completes the connection and allocation tasks from the three simulators. Finally, the corresponding simulator circuit is connected from the second synthesis interface circuit to the corresponding equipment to achieve the purpose of grounding and discharging interference signals. The radio signal interference neutralization circuit includes a third synthesis interface circuit, a co-channel interference neutralization circuit, an adjacent-channel interference neutralization circuit, an external interference neutralization circuit, an intermodulation interference neutralization circuit, and an electronic switch circuit, with each circuit operating relatively independently. When the radio signal interference neutralization circuit is operational, its four neutralization circuits automatically generate negative image mirror interference from the incoming interference signals through internal circuitry, calculating the frequency difference. The two interference signals are then combined and neutralized to zero, thus eliminating the interference. The third synthesis interface circuit distributes the input and output signals from the neutralization circuits, with the distribution process controlled by the system control and display operation circuitry. The common-mode and differential-mode electromagnetic interference reduction circuit includes a fourth synthesis interface circuit, a common-mode interference filtering circuit, a differential-mode interference filtering circuit, and an electronic switch circuit. When the common-mode and differential-mode electromagnetic interference reduction circuits are operating, the two reduction circuits respectively calculate and compare the potential formed when the input signal passes through a current-carrying conductor with the potential of the standard reference ground through their internal circuits, resulting in a potential difference. If an unwanted potential difference is found, it indicates the presence of corresponding interference. At this time, the system control and display operation circuit activates the electronic switch circuit, controlling the corresponding circuit to operate and complete the interference reduction. The system control and display operation circuit includes an input / output interface circuit, a microcontroller chip circuit, a signal processing circuit, a memory circuit, an arithmetic unit circuit, a display unit circuit, and a key control operation circuit. When the system control and display operation circuit operates, it first calculates, analyzes, and compares the interference data signal input from the interface and electromagnetic interference source identification circuit, under the unified coordination of its internal microcontroller, and then generates command signals to control the corresponding unit circuits. Secondly, under the control of the microcontroller chip, the display operation circuit converts the adapted digital signal into a display signal conforming to the LCD panel display format, and displays it directly on the LCD panel. The key control operation circuit is used to complete human-machine interaction under the control of the microcontroller chip.

[0010] Among them, the high-gain interference signals picked up by various equipment in the communication system are identified and located by the corresponding circuits in the interface and electromagnetic interference source identification circuit, and then output a digital signal to the system control and display operation circuit. The system control and display operation circuit responds to the digital signal and outputs a control signal to the switching circuit of each independent unit circuit, so that the corresponding independent unit circuit can work.

[0011] The device also includes a memory and a keying circuit.

[0012] The additional device does not modify any circuits, components, or cables of the equipment itself. It only requires connecting the input and output lines of the additional device to the outer sheath of the metal casing, power cord, signal line, and other external connection cables of all equipment in the system.

[0013] (III) Beneficial Effects Compared with existing technologies, this invention provides an additional device for electromagnetic compatibility (EMC) in emergency radio communication systems. It addresses the practical problem that deploying EMC devices between various pieces of equipment in emergency radio communication systems cannot achieve the same standard as building fixed radio communication systems. The invention focuses on low cost, simple operation, rapid deployment, convenient relocation, and reduced harm to the human body from electromagnetic interference. It uses independent, directly replaceable modular circuits as design units, a microcontroller as the system control center, and memory as a mobile database. It employs a method of clamping exposed metal parts of system equipment, the outer sheath of data input / output cables, and the outer sheath of power lines to instantly and instantly pick up and divert interference sources, thereby achieving EMC between all equipment. Furthermore, through high-gain signal pickup and EMC diversion techniques, it accurately calculates and processes the actual electronic interference generated by each piece of equipment. This changes the reality that instantaneous or continuous interference between equipment in temporarily set up emergency radio communication systems cannot be eliminated, filling the gap in the field of emergency radio communication system construction where there is no dedicated, rapidly deployable, and miniaturized EMC device for achieving EMC between various pieces of equipment.

[0014] 1. This invention provides an additional device for electromagnetic compatibility (EMC) of an emergency radio communication system. By using an interface and EMC source identification circuit, an adaptive filter circuit, a grounding facility integrator circuit, an electronic shielding circuit, a radio signal interference neutralization circuit, a common-mode and differential-mode interference reduction circuit, and a system control and display operation circuit, it can achieve EMC between various equipment in any state for temporarily set up emergency radio communication systems, especially those established by the military during combat, special missions, and disaster relief. It is also convenient for application in both mobile and fixed radio communication systems. The greatest advantage of this device is its rapid and convenient deployment, thus solving the EMC problem in emergency-setup radio communication systems.

[0015] 2. This invention provides an additional device for electromagnetic compatibility of an emergency radio communication system. It adopts a fully modular design, with each unit being independent and self-contained. The entire device is small in size, can be used independently or in combination, is simple to operate, easy to carry, has an intuitive display, a robust structure, is flexible and convenient to use, and is highly targeted. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the electromagnetic compatibility auxiliary device of the emergency radio communication system of the present invention; Figure 2 This is a schematic diagram of the interface and electromagnetic interference source identification circuit of the present invention. Figure 3This is a schematic diagram of the adaptive filter circuit of the present invention; Figure 4 This is a schematic diagram of the electronic shielding circuit of the present invention; Figure 5 This is a schematic diagram of the circuit composition of the grounding facility integrator of the present invention; Figure 6 This is a schematic block diagram of the radio interference neutralization circuit of the present invention; Figure 7 This is a schematic block diagram of the common-mode and differential-mode interference reduction circuit of the present invention; Figure 8 This is a schematic diagram of the system control and display operation circuit of the present invention; Figure 9 A schematic diagram illustrating the layout of an independent radio station or related equipment. Figure 10 A schematic diagram illustrating the layout between two radio station devices. Figure 11 A schematic diagram illustrating the setup of a temporary emergency radio station system. Detailed Implementation

[0017] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0018] To solve the above-mentioned technical problems, the present invention provides an additional device for electromagnetic compatibility of an emergency radio communication system. The additional device includes: an interface and electromagnetic interference source identification circuit, an adaptive filter circuit, a grounding facility integrator circuit, an electronic shielding circuit, a radio signal interference neutralization circuit, a common-mode and differential-mode interference reduction circuit, and a system control and display operation circuit. The interface and electromagnetic interference source identification circuit are used to pick up electromagnetic interference leakage signals clipped onto equipment within the communication system with high gain. When electromagnetic interference leakage is detected, the signal is immediately identified and classified as an interference type. One path is converted into a digital signal and provided to the system control and display operation circuit. The system control and display operation circuit compares the interference type with the standard interference signal source in the memory and outputs a corresponding control signal to the corresponding anti-interference module circuit. The other path directly diverts the electromagnetic interference leakage signal to the adaptive filter circuit, grounding facility integrator circuit, electronic shielding circuit, radio signal interference neutralization circuit, and common-mode and differential-mode interference reduction circuit, respectively. When the system control and display operation circuit outputs a control signal to the corresponding interference processing circuit, the corresponding interference processing circuit processes the interference signal accordingly, transforming it into a signal that does not affect other equipment or directly grounding it.

[0019] The interface and electromagnetic interference source identification circuit divert interference leakage from all radio stations or equipment within the communication system, thereby achieving electromagnetic compatibility among various devices within the communication system.

[0020] The entire emergency radio communication system can divert and process external interference signals and its own interference signals individually or in multiple ways. Depending on the number of devices equipped in the emergency radio communication system, one or more of the additional devices may be used simultaneously.

[0021] The interface and electromagnetic interference source identification circuit includes: a port allocation and access circuit, an interference signal high-gain pickup circuit, and an interference signal level spectrum shaping and digitization circuit. When the interface and electromagnetic interference source identification circuit is working, the interference signal high-gain pickup circuit first scans the leaked interference electromagnetic signals on each piece of equipment in real time, processes the signals, and sends them to the system control and display operation circuit. Under the command of the system control and display operation circuit, the port allocation and access circuit opens the output port channel and instantly closes the input port channel. Secondly, the opened output port channel connects to the corresponding interference processing circuit and connects to external equipment, ultimately realizing the pickup of input interference signals and the output connection to the anti-interference signal circuit. The adaptive filter circuit includes an electromagnetic interference filter, a radio interference filter, an analog signal filter, a digital signal filter, and an adaptive interface circuit. When the adaptive filter circuit is working, it processes interference signals from all equipment within the communication system and connects to each piece of equipment within the communication system via the adaptive interface circuit. Under the control of the system control and display operation circuit, it achieves the diversion and filtering of various interferences within the communication system. The adaptive interface circuit completes the distribution of interference signals and the switching control of each signal access. It is externally connected to the interface and electromagnetic interference source identification circuit and is controlled by the system control and display operation circuit. The electronic shielding circuit includes a synthesis interface circuit, an electrical shielding simulator circuit, a magnetic shielding simulator circuit, an electromagnetic shielding simulator circuit, a radio shielding simulator circuit, an electrostatic shielding simulator circuit, and a first synthesis interface circuit. When the electronic shielding circuit is working, it automatically drives the corresponding shielding simulator circuit according to the nature of the interference source to shield interference signals from the interface and the electromagnetic interference source identification circuit. Secondly, the system control and display operation circuit opens the corresponding shielding simulator circuit according to the nature of the interference source and connects the shielding simulator to the corresponding equipment within the communication system, thus achieving the purpose of diverting the interference signal to the corresponding shielding simulator circuit for electronic shielding. The grounding facility integrator circuit includes a multi-point grounding simulator, a hybrid grounding simulator, a floating ground discharge simulator, and a second synthesis interface circuit. When the grounding facility integrator circuit is working, the three grounding simulators analyze and calculate the required grounding resistance through their internal circuits and compare it with standard parameters. Under the control of the system control and display operation circuit, the corresponding simulator is connected to the second synthesis interface circuit. The second synthesis interface circuit completes the connection and allocation tasks from the three simulators. Finally, the corresponding simulator circuit is connected from the second synthesis interface circuit to the corresponding equipment to achieve the purpose of grounding and discharging interference signals. The radio signal interference neutralization circuit includes a third synthesis interface circuit, a co-channel interference neutralization circuit, an adjacent-channel interference neutralization circuit, an external interference neutralization circuit, an intermodulation interference neutralization circuit, and an electronic switch circuit, with each circuit operating relatively independently. When the radio signal interference neutralization circuit is operational, its four neutralization circuits automatically generate negative image mirror interference from the incoming interference signals through internal circuitry, calculating the frequency difference. The two interference signals are then combined and neutralized to zero, thus eliminating the interference. The third synthesis interface circuit distributes the input and output signals from the neutralization circuits, with the distribution process controlled by the system control and display operation circuitry. The common-mode and differential-mode electromagnetic interference reduction circuit includes a fourth synthesis interface circuit, a common-mode interference filtering circuit, a differential-mode interference filtering circuit, and an electronic switch circuit. When the common-mode and differential-mode electromagnetic interference reduction circuits are operating, the two reduction circuits respectively calculate and compare the potential formed when the input signal passes through a current-carrying conductor with the potential of the standard reference ground through their internal circuits, resulting in a potential difference. If an unwanted potential difference is found, it indicates the presence of corresponding interference. At this time, the system control and display operation circuit activates the electronic switch circuit, controlling the corresponding circuit to operate and complete the interference reduction. The system control and display operation circuit includes an input / output interface circuit, a microcontroller chip circuit, a signal processing circuit, a memory circuit, an arithmetic unit circuit, a display unit circuit, and a key control operation circuit. When the system control and display operation circuit operates, it first calculates, analyzes, and compares the interference data signal input from the interface and electromagnetic interference source identification circuit, under the unified coordination of its internal microcontroller, and then generates command signals to control the corresponding unit circuits. Secondly, under the control of the microcontroller chip, the display operation circuit converts the adapted digital signal into a display signal conforming to the LCD panel display format, and displays it directly on the LCD panel. The key control operation circuit is used to complete human-machine interaction under the control of the microcontroller chip.

[0022] Among them, the high-gain interference signals picked up by various equipment in the communication system are identified and located by the corresponding circuits in the interface and electromagnetic interference source identification circuit, and then output a digital signal to the system control and display operation circuit. The system control and display operation circuit responds to the digital signal and outputs a control signal to the switching circuit of each independent unit circuit, so that the corresponding independent unit circuit can work.

[0023] The device also includes a memory and a keying circuit.

[0024] The additional device does not modify any circuits, components, or cables of the equipment itself. It only requires connecting the input and output lines of the additional device to the outer sheath of the metal casing, power cord, signal line, and other external connection cables of all equipment in the system.

[0025] Example 1 To address the practical problem of not being able to achieve the same standard for deploying electromagnetic compatibility (EMC) devices between various equipment in emergency radio communication systems as for fixed radio communication systems, this invention provides an EMC supplementary device for emergency radio communication systems that is fast to deploy, simple to operate, low in cost, and unprecedented in the field. This device is small in size, fully functional, and easy to deploy. In particular, it employs a novel design concept that combines high-gain pickup and electromagnetic interference leakage diversion technologies without modifying the original communication equipment. This allows for EMC compatibility between all equipment in radio communication systems established for emergency mobilization, disaster relief, and emergency situations, greatly improving the flexibility of anti-interference devices in emergency situations and solving the problem of EMC compatibility between various equipment in temporary, emergency, and mobile radio communication systems.

[0026] like Figure 1 As shown, the present invention provides an additional device for electromagnetic compatibility of an emergency radio communication system, which includes an interface and electromagnetic interference source identification circuit, an adaptive filter circuit, an electronic shielding circuit, a grounding facility integrator circuit, a radio signal interference neutralization circuit, a common-mode and differential-mode interference reduction circuit, and a system control and display operation circuit. The interface and electromagnetic interference source identification circuit is used for high-gain pickup of electromagnetic interference leakage signals clipped onto the radio and equipment within the system. When electromagnetic interference leakage is detected, the signal is immediately identified and classified as an interference type. One path converts the signal into a digital signal and provides it to the system control and display circuit. This circuit compares the interference type with a standard interference signal source stored in the memory and outputs a corresponding control signal to the appropriate anti-interference module circuit. The other path directly diverts the electromagnetic interference leakage signal to the adaptive filter circuit, grounding facility integrator circuit, electronic shielding circuit, radio signal interference neutralization circuit, and common-mode and differential-mode interference reduction circuit. When the system control and display circuit outputs a control signal to the corresponding interference processing circuit, the circuit operates, and its related circuits process the interference signal accordingly, converting it into a signal that does not affect other equipment or directly grounding it. For example, when clipped onto equipment within the system... Figure 11 When the probe on the metal casing of the transmitter picks up an interference signal, it instantly introduces this signal to the interface and electromagnetic interference source identification circuit. After signal processing within this circuit, one path is sent to the system control and display operation circuit, and the other path is simultaneously sent to the adaptive filter circuit, grounding facility integrator circuit, electronic shielding circuit, radio signal interference neutralization circuit, and common-mode and differential-mode interference reduction circuit. When the system control and display operation circuit determines that the interference source needs filtering based on the interference signal, it immediately activates the adaptive filter circuit. The adaptive filter circuit operates and connects to the transmitter experiencing interference through the interface and electromagnetic interference source identification circuit, filtering out the interference. This process continues, diverting interference leakage from all radios or equipment within the system, thus achieving electromagnetic compatibility between the various devices within the system. The entire emergency radio communication system can process both external interference signals and its own interference signals individually or in multiple ways. Furthermore, depending on the number of devices within the emergency radio communication system, one or multiple auxiliary devices can be used simultaneously.

[0027] The composition and working principle of each circuit are described in detail below.

[0028] like Figure 2As shown, the interface and electromagnetic interference source identification circuit includes a port allocation and access circuit, an interference signal high-gain pickup circuit, and an interference signal level and spectrum shaping digitization circuit. When the interface and electromagnetic interference source identification circuit is working, the signal clips on various devices within the system send interference signals to the port allocation and access circuit. The signals undergo pre-classification processing within the circuit, and after functional allocation, they first enter the high-gain interference signal pickup circuit (this circuit mainly amplifies weak signals and increases the overall signal amplitude, accurately capturing all interference source signals). After amplitude enhancement, the signals are then sent to the interference signal level and spectrum shaping digitization circuit for internal processing into a signal recognizable by the system control and display operation circuit. Secondly, under the control of the system control and display operation circuit, the port allocation and access circuit completes a closed-loop connection with the adaptive filter circuit, grounding facility integrator circuit, electronic shielding circuit, radio signal interference neutralization circuit, and common-mode and differential-mode interference reduction circuit, instantly processing the interference signals.

[0029] like Figure 3 As shown, the adaptive filter circuit includes an electromagnetic interference filter, a radio interference filter, an analog signal filter, a digital signal filter, and an adaptive interface circuit. The electromagnetic interference filter, radio interference filter, analog signal filter, and digital signal filter are each integrated, primarily responsible for filtering electromagnetic interference signals, radio interference signals, analog interference signals, and digital interference signals from all equipment within the system. For example, if the interference source is radio interference, the system control and display operation circuit activates the radio interference filter through the adaptive interface circuit, instantly connecting the filter to the corresponding equipment generating radio interference within the system, thus completing the diversion and filtering of the interfering equipment. The adaptive interface circuit mainly handles the distribution of interference signals and the switching control of various signal accesses. Its circuit is externally connected to the interface and electromagnetic interference source identification circuit, and is controlled by the system control and display operation circuit.

[0030] like Figure 4As shown, the electronic shielding circuit includes a synthesis interface circuit, an electrical shielding simulator circuit, a magnetic shielding simulator circuit, an electromagnetic shielding simulator circuit, a radio shielding simulator circuit, and an electrostatic shielding simulator circuit. The synthesis interface circuit receives a high-gain interference signal from the interface and the electromagnetic interference source identification circuit. This signal is internally distributed and processed before being connected to the electrical shielding simulator circuit, the magnetic shielding simulator circuit, the electromagnetic shielding simulator circuit, the radio shielding simulator circuit, and the electrostatic shielding simulator circuit (these five simulators are independently configured and not interconnected). When the circuit is working, the synthesis interface circuit, under the action of the system control circuit, opens the electronic switch circuit, causing the corresponding simulator circuit to start and implement shielding against the interference signal. For example: If the interference source is formed by the electric field between common ground circuits, the system control circuit will immediately activate the electric shielding simulator circuit via the electronic switch circuit; if the interference is formed by a constant or low-frequency magnetic field, the magnetic shielding simulator circuit will be activated; if the interference is formed by electromagnetic waves, the electromagnetic shielding simulator circuit will be activated; if the interference is generated by radio signals, the radio shielding simulator circuit will be activated; if the interference is generated between two circuits due to the coupling of distributed capacitance, the electrostatic shielding simulator circuit will be activated. When the corresponding interference signal enters the corresponding simulator circuit, under the action of the system control and display operation circuit, it will immediately enter the interface and electromagnetic interference source identification circuit through the synthesis interface circuit and be connected to the corresponding equipment. Its internal circuit will then complete the shielding of the corresponding interference signal.

[0031] like Figure 5 As shown, the grounding facility integrator circuit includes a synthesis interface circuit, a multi-point grounding simulator, a hybrid grounding simulator, a floating ground discharge simulator, and an electronic switch circuit. The synthesis interface circuit receives a high-gain interference signal from the interface and electromagnetic interference source identification circuit. This signal, after internal distribution processing, is then connected to the multi-point grounding simulator, the hybrid grounding simulator, and the floating ground discharge simulator (these three simulators are independently configured and not connected to each other). When the circuit is operating, the synthesis interface circuit, under the control of the system control circuit, activates the electronic switch circuit, causing the corresponding simulator circuit to start and perform grounding discharge of the interference signal. For example, when the system control and display operation circuit requires the facility integrator circuit to operate, the three grounding simulators calculate the required grounding resistance through their internal circuits and compare it with standard parameters. If multi-point grounding is required, under the control of the system control and display operation circuit, the multi-point grounding simulator is connected to the synthesis output circuit and immediately enters the interface and electromagnetic interference source identification circuit, connecting to the corresponding equipment to achieve the purpose of grounding discharge of the interference signal.

[0032] like Figure 6As shown, the radio signal interference neutralization circuit includes a synthesis interface circuit, a co-channel interference neutralization circuit, an adjacent-channel interference neutralization circuit, an external interference neutralization circuit, and an intermodulation interference neutralization circuit (the above four neutralization circuits are independently set and not connected to each other). Among them, the interference signals from the interface and electromagnetic interference source identification circuit within the system first enter the synthesis distribution circuit to allocate the interference type, and wait for the instructions of the system control and display operation circuit. When it is confirmed that it is a certain type of interference, the corresponding signal enters the corresponding neutralization circuit. The neutralization circuit internally forms mirror interference through frequency difference calculation. The two interferences are synthesized and become zero, thereby eliminating the interference. For example, when the system control and display operation circuit requires the radio interference neutralization circuit to work, the four neutralization circuits respectively calculate the required frequency difference through their internal circuits and compare it with the standard parameters. If the co-channel interference neutralization circuit is required, under the control of the system control and display operation circuit, the electronic switch circuit is turned on, connecting the co-channel interference neutralization circuit to the synthesis output circuit, and immediately entering the interface and electromagnetic interference source identification circuit and connecting to the corresponding equipment to complete the purpose of interference signal neutralization. The synthesis and distribution circuit mainly completes the input and output distribution of signals from the neutralization circuit. The distribution program is controlled by the system control and display operation circuit.

[0033] like Figure 7 As shown, the common-mode and differential-mode electromagnetic interference (EMI) reduction circuit includes a synthesis interface circuit, a common-mode interference reduction circuit, a differential-mode interference reduction circuit, and an electronic switch circuit. High-gain interference signals picked up by the interface and EMI source identification circuit first enter the synthesis interface circuit. Under the control of the system control circuit, its internal input and output distribution circuits activate the corresponding electronic switch circuits based on the interference type and circuit requirements, connecting to the reduction circuits. The signals are then connected to the equipment generating the interference within the system via the synthesis interface circuit, the interface, and the EMI source identification circuit, thus achieving interference reduction. For example, if the system control and display operation circuit determines that the interference is caused by an unwanted potential difference between a current-carrying conductor of a piece of equipment and the reference ground, then the common-mode interference reduction circuit is activated; if the interference is caused by an unwanted potential difference between two current-carrying conductors, then the differential-mode interference reduction circuit is activated, thereby reducing both common-mode and differential-mode interference.

[0034] like Figure 8As shown, the system control and display operation circuit includes an input / output interface circuit, a microcontroller chip circuit, a signal processing circuit, a memory circuit, an arithmetic logic unit (ALU) circuit, a display unit circuit, and a key control operation circuit. Interference signals from the controlled unit circuit first enter the input / output interface circuit, where they are filtered and matched internally. Then, they enter the signal processing circuit for analog-to-digital conversion and signal processing, transforming them into signals acceptable to the microcontroller chip. Finally, the signals enter the microcontroller chip for control (the program is written according to the physical connections and actual working needs, and can be easily modified at any time). The memory circuit stores all data, and the ALU performs calculations on all data. These two circuits, together with the microcontroller chip, form the minimum system control circuit, realizing system control of the entire device. Under the control of the microcontroller chip, the display unit circuit converts the adapted digital signals into display signals conforming to the LCD panel display format and outputs them directly to the LCD panel for display. The key control operation circuit mainly performs human-machine command control operations under the control of the microcontroller chip.

[0035] The following is an analysis and summary of how to implement electromagnetic compatibility (EMC) for independent equipment, between equipment, and temporarily assembled emergency radio communication systems, specifically regarding the use of EMC-related devices in the field: 1. For independent radio stations or related independent equipment The corresponding connection is as follows Figure 9As shown in the figure, this setup is very simple. When the electromagnetic compatibility auxiliary device of the emergency radio communication system is normally installed, the device is placed in a suitable position outside the equipment. The external connection clamps of the device are used to clamp onto the metal shell of the equipment, the outer sheath of the input and output cables, the exposed metal parts of the equipment, the outer sheath of the power cord, and the ground terminal (all can be connected, or one or more can be connected as needed). When the device is powered on, it is immediately connected to the equipment. A green light illuminates when there is no electromagnetic interference. A red light illuminates when electromagnetic interference leakage is detected (the duration of the red light depends on the time it takes to eliminate the interference, typically a few seconds). Instantly, the device's internal interface and electromagnetic interference source identification circuit identify and classify the type of interference. One path converts the interference into a digital signal and provides it to the system control and display circuit. This circuit compares the type of interference with a standard interference signal source stored in the memory and outputs a corresponding control signal to the appropriate anti-interference processing module circuit. The other path directly diverts the electromagnetic interference leakage to the adaptive filter circuit, grounding facility integrator circuit, radio signal interference neutralization circuit, and common-mode and differential-mode interference reduction circuit. When the system control and display circuit outputs a signal to the corresponding module, the module operates. The relevant circuits within the module process the interference source signal, converting it into a signal that does not affect other equipment or directly grounding it. The interference signal is eliminated by the device, and the red light goes out. This process continues, with the internal module circuits processing the interference leakage of the equipment, thus achieving electromagnetic compatibility with the radio equipment.

[0036] 2. Regarding the interaction between radio equipment and other equipment The corresponding connection is as follows Figure 10As shown in the diagram, one set of auxiliary devices can be used for two radio stations or equipment, and the connection method is as simple as a single connection. When normally deploying the electromagnetic compatibility auxiliary device for the emergency radio communication system, place the device in a suitable location outside the equipment. Use the device's external connection clamps to clip onto the equipment's metal casing, the outer sheath of the input and output cables, exposed metal parts of the equipment, the outer sheath of the power cord, and the ground terminal (all can be connected, or one or more can be connected as needed). When the device is powered on, it is immediately connected to the equipment. A green light illuminates when there is no electromagnetic interference. If electromagnetic interference leakage is detected in one or both pieces of equipment, a red light illuminates (the duration of the red light depends on the time it takes for the device to eliminate the interference, typically a few seconds). Instantly, the device's internal interface and electromagnetic interference source identification circuit identify and classify the type of interference. One path converts the interference into a digital signal and provides it to the system control and display circuit. This circuit compares the type of interference with a standard interference signal source stored in the memory and outputs a corresponding control signal to the appropriate anti-interference processing module circuit. The other path directly diverts the electromagnetic interference leakage to the adaptive filter circuit, grounding facility integrator circuit, radio signal interference neutralization circuit, and common-mode and differential-mode interference reduction circuit. When the system control and display circuit outputs a signal to the corresponding module, the module operates. The relevant circuits within the module process the interference source signal, converting it into a signal that does not affect other equipment or directly grounding it. The interference signal is eliminated by the device, and the red light goes out. This process continues, with the internal module circuits of the device diverting and processing the interference leakage from the equipment, thus achieving electromagnetic compatibility between the two radio stations.

[0037] 3. For temporarily set up emergency radio station systems The corresponding connection is as follows Figure 11As shown in the diagram, multiple sets of auxiliary devices can meet the needs of a temporarily set-up emergency radio station system. The connection methods can be series, parallel, or freely connected. During normal deployment of the electromagnetic compatibility auxiliary devices for the emergency radio communication system, the devices are placed in suitable locations outside the equipment. External connection clamps are used to clip the devices onto the equipment's metal casing, the outer sheath of the input and output cables, exposed metal parts of the equipment, the outer sheath of the power cord, and the ground terminal (all can be connected, or one or more can be connected as needed). Once all devices are powered on, they are connected to the equipment. When there is no electromagnetic interference, the device displays a green light. When electromagnetic interference leakage is detected in one or more pieces of equipment, the device displays a red light (the display duration depends on the time it takes for the device to eliminate the interference, generally a few seconds). Instantly, the device's internal interface and electromagnetic interference source identification circuit identify and classify the type of interference. One path converts the interference into a digital signal and provides it to the system control and display operation circuit. This circuit compares the type of interference with the standard interference signal source in the memory and outputs a corresponding control signal to the appropriate anti-interference processing module circuit. The other path directly diverts the electromagnetic interference leakage to the adaptive filter circuit, grounding facility integrator circuit, radio signal interference neutralization circuit, and common-mode and differential-mode interference reduction circuit. When the system control and display operation circuit outputs a signal to the corresponding module, the module operates. The relevant circuits within the module process the interference source signal accordingly, converting it into a signal that does not affect other equipment or directly grounding it. The interference signal is eliminated by the device, and the red light goes out. Similarly, the module circuitry within the device diverts and handles interference leakage from the equipment, thereby achieving electromagnetic compatibility with the temporarily assembled emergency radio station system.

[0038] In summary, this invention addresses the following problems existing in temporary emergency radio communication systems: (1) the system setup time is short, making it impossible to quickly deploy relevant electromagnetic compatibility (EMC) facilities as required; (2) the temporary setup has a short usage time, requiring the deployment of low-cost EMC facilities; (3) if the EMC device for a fixed radio communication system is installed, the process is complex and difficult to implement; (4) the system has many types of equipment with complex electromagnetic radiation sources, making it impossible to handle them quickly and individually; (5) most transceivers are placed together in the system, resulting in significant mutual interference; (6) the distribution of radios of varying power is uneven and cannot be adjusted or changed; (7) no equipment in the system can be changed; (8) static electricity is relatively common; (9) there are many operators with varying skill levels, making it easy for human-caused electromagnetic interference to occur. From a technical perspective, this invention utilizes a novel design concept that combines instantaneous high-gain pickup and electromagnetic interference leakage diversion technology without modifying the original communication equipment, and adopts a single-chip microcomputer control system and memory database technology to reasonably solve the above problems. The additional electromagnetic compatibility (EMC) devices for emergency radio communication systems include: an EMC source identification circuit, an adaptive filter circuit, an electronic shielding circuit, a grounding facility integrator circuit, a radio signal interference neutralization circuit, a common-mode and differential-mode interference reduction circuit, and a system control and display operation circuit. Furthermore, the device can not only quickly deploy anti-interference measures within the system, but also display the equipment generating EMC sources within the system. It achieves full modularity of the circuitry, resulting in a small size, multiple functions, and portability. Moreover, this device is suitable not only for implementing EMC between equipment in disaster relief, emergency troop deployment, and temporarily established radio communication systems, but also for EMC protection of independent electronic equipment. It can also be used in emergency situations in fixed radio communication systems or for radio equipment operating in other special environments, maximizing the device's operational efficiency.

[0039] In summary, this invention belongs to the field of electromagnetic compatibility (EMC) technology for radio communication systems, specifically relating to an additional device for EMC in emergency radio communication systems. It employs a hybrid technology of high-gain pickup and current diversion for electromagnetic interference signals, without requiring modifications to the original communication equipment—a completely new design concept. Through the use of interface and EMC source identification circuits, adaptive filter circuits, grounding facility integrator circuits, electronic shielding circuits, radio signal interference neutralization circuits, common-mode and differential-mode interference reduction circuits, and system control and display operation circuits, it achieves EMC filtering, EMC source identification, common-mode and differential-mode interference reduction, leakage EMC suppression, radio interference signal neutralization, and electronic shielding within the emergency radio communication system—whether for individual devices, between devices, or between all devices—without modification. This results in simple and rapid EMC within the system. This invention can be applied to radio communication systems established in various emergency situations and fixed radio transceiver communication systems. It can accurately and intuitively display the source of interference signals, can be directly deployed and connected via clips, and can be deployed individually or in multiple units. Furthermore, this invention adopts a fully modular design, is small in size, and is convenient to carry and operate.

[0040] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An additional device for electromagnetic compatibility of an emergency radio communication system, characterized in that, The additional device includes: an interface and electromagnetic interference source identification circuit, an adaptive filter circuit, a grounding facility integrator circuit, an electronic shielding circuit, a radio signal interference neutralization circuit, a common-mode and differential-mode interference reduction circuit, and a system control and display operation circuit. The interface and electromagnetic interference source identification circuit are used to pick up electromagnetic interference leakage signals clipped onto equipment within the communication system with high gain. When electromagnetic interference leakage is detected, the signal is immediately identified and classified as an interference type. One path is converted into a digital signal and provided to the system control and display operation circuit. The system control and display operation circuit compares the interference type with the standard interference signal source in the memory and outputs a corresponding control signal to the corresponding anti-interference module circuit. The other path directly diverts the electromagnetic interference leakage signal to the adaptive filter circuit, grounding facility integrator circuit, electronic shielding circuit, radio signal interference neutralization circuit, and common-mode and differential-mode interference reduction circuit, respectively. When the system control and display operation circuit outputs a control signal to the corresponding interference processing circuit, the corresponding interference processing circuit processes the interference signal accordingly, transforming it into a signal that does not affect other equipment or directly grounding it.

2. The electromagnetic compatibility supplementary device for the emergency radio communication system as described in claim 1, characterized in that, The interface and electromagnetic interference source identification circuit divert interference leakage from all radio stations or equipment within the communication system, thereby achieving electromagnetic compatibility among various devices within the communication system.

3. The electromagnetic compatibility supplementary device for the emergency radio communication system as described in claim 1, characterized in that, The entire emergency radio communication system can divert and process external interference signals and its own interference signals individually or in multiple ways.

4. The electromagnetic compatibility supplementary device for the emergency radio communication system as described in claim 1, characterized in that, Depending on the number of devices equipped in the emergency radio communication system, one or more of the additional devices may be used simultaneously.

5. The electromagnetic compatibility supplementary device for the emergency radio communication system as described in claim 1, characterized in that, The interface and electromagnetic interference source identification circuit includes: a port allocation and access circuit, and an interference signal high-gain pickup circuit. When the interface and electromagnetic interference source identification circuit is working, the interference signal high-gain pickup circuit first scans the leaked interference electromagnetic signals on each piece of equipment in real time, processes the signals, and sends them to the system control and display operation circuit. Under the command of the system control and display operation circuit, the port allocation and access circuit opens the output port channel and instantly closes the input port channel. Secondly, the opened output port channel connects to the corresponding interference processing circuit and connects to external equipment, ultimately realizing the pickup of input interference signals and the output connection to the anti-interference signal circuit. When the adaptive filter circuit is working, it processes the interference signals from all equipment in the communication system accordingly, and connects to each piece of equipment in the communication system through the adaptive interface circuit. Under the control of the system control and display operation circuit, it realizes the diversion and filtering of various interferences in the communication system. The adaptive interface circuit completes the distribution of interference signals and the switching control of each signal access. It is externally connected to the interface and electromagnetic interference source identification circuit and is controlled by the system control and display operation circuit. The electronic shielding circuit includes a synthesis interface circuit, an electrical shielding simulator circuit, a magnetic shielding simulator circuit, an electromagnetic shielding simulator circuit, a radio shielding simulator circuit, an electrostatic shielding simulator circuit, and a first synthesis interface circuit. When the electronic shielding circuit is working, it automatically drives the corresponding shielding simulator circuit according to the nature of the interference source to shield interference signals from the interface and the electromagnetic interference source identification circuit. Secondly, the system control and display operation circuit opens the corresponding shielding simulator circuit according to the nature of the interference source and connects the shielding simulator to the corresponding equipment within the communication system, thus achieving the purpose of diverting the interference signal to the corresponding shielding simulator circuit for electronic shielding. The grounding facility integrator circuit includes a multi-point grounding simulator, a hybrid grounding simulator, a floating ground discharge simulator, and a second synthesis interface circuit. When the grounding facility integrator circuit is working, the three grounding simulators analyze and calculate the required grounding resistance through their internal circuits and compare it with standard parameters. Under the control of the system control and display operation circuit, the corresponding simulator is connected to the second synthesis interface circuit. The second synthesis interface circuit completes the connection and allocation tasks from the three simulators. Finally, the corresponding simulator circuit is connected from the second synthesis interface circuit to the corresponding equipment to achieve the purpose of grounding and discharging interference signals. The radio signal interference neutralization circuit includes a third synthesis interface circuit, a co-channel interference neutralization circuit, an adjacent-channel interference neutralization circuit, an external interference neutralization circuit, an intermodulation interference neutralization circuit, and an electronic switch circuit, with each circuit operating relatively independently. When the radio signal interference neutralization circuit is operational, its four neutralization circuits automatically generate negative image mirror interference from the incoming interference signals through internal circuitry, calculating the frequency difference. The two interference signals are then combined and neutralized to zero, thus eliminating the interference. The third synthesis interface circuit distributes the input and output signals from the neutralization circuits, with the distribution process controlled by the system control and display operation circuitry. The common-mode and differential-mode electromagnetic interference reduction circuit includes a fourth synthesis interface circuit, a common-mode interference filtering circuit, a differential-mode interference filtering circuit, and an electronic switch circuit. When the common-mode and differential-mode electromagnetic interference reduction circuits are operating, the two reduction circuits respectively calculate and compare the potential formed when the input signal passes through a current-carrying conductor with the potential of the standard reference ground through their internal circuits, resulting in a potential difference. If an unwanted potential difference is found, it indicates the presence of corresponding interference. At this time, the system control and display operation circuit activates the electronic switch circuit, controlling the corresponding circuit to operate and complete the interference reduction. The system control and display operation circuit includes an input / output interface circuit, a microcontroller chip circuit, a signal processing circuit, a memory circuit, an arithmetic unit circuit, a display unit circuit, and a key control operation circuit. When the system control and display operation circuit operates, it first calculates, analyzes, and compares the interference data signal input from the interface and electromagnetic interference source identification circuit, under the unified coordination of its internal microcontroller, and then generates command signals to control the corresponding unit circuits. Secondly, under the control of the microcontroller chip, the display operation circuit converts the adapted digital signal into a display signal conforming to the LCD panel display format, and displays it directly on the LCD panel. The key control operation circuit is used to complete human-machine interaction under the control of the microcontroller chip.

6. The electromagnetic compatibility supplementary device for the emergency radio communication system as described in claim 5, characterized in that, High-gain interference signals picked up by various equipment within the communication system are identified and located by the corresponding circuits in the interface and electromagnetic interference source identification circuit. A digital signal is then output to the system control and display operation circuit. The system control and display operation circuit responds to this digital signal and outputs a control signal to the switching circuit of each independent unit circuit, causing the corresponding independent unit circuit to operate.

7. The electromagnetic compatibility supplementary device for the emergency radio communication system as described in any one of claims 1-6, characterized in that, The device also includes a memory and a keying circuit.

8. The electromagnetic compatibility supplementary device for the emergency radio communication system as described in any one of claims 1-6, characterized in that, The additional device does not alter any of the equipment's circuitry, components, or cables. It simply requires connecting the input and output lines of the additional device to the outer sheath of all the equipment's metal casings, power cords, signal lines, and other external connection cables within the system.

9. The electromagnetic compatibility supplementary device for the emergency radio communication system as described in any one of claims 1-6, characterized in that, The device, through the use of interface and electromagnetic interference source identification circuit, adaptive filter circuit, grounding facility integrator circuit, electronic shielding circuit, radio signal interference neutralization circuit, common-mode and differential-mode interference reduction circuit, system control and display operation circuit, can achieve electromagnetic compatibility between various equipment in any state for temporarily set up emergency radio communication systems, especially radio communication systems established by the military during combat, special missions and disaster relief; and is convenient for application in radio communication systems in both mobile and fixed situations.

10. The electromagnetic compatibility supplementary device for the emergency radio communication system as described in any one of claims 1-6, characterized in that, The biggest advantage of the device is that it can be deployed quickly and easily, thus solving the electromagnetic compatibility problem in emergency radio communication systems.

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