What is the RF sensor structure of communication relays

　　At present, the international standard IEC61811-55 developed for the fourth generation communication relay RF sensor has put forward more stringent requirements for surge voltage resistance, insulation voltage resistance and surge protection insulation spacing and isolation between input and output. Good relay parameter consistency and high reliability will make the whole machine run without error.

　　The third and fourth generation communication relay RF sensor structure is completely different from the first and second generation, the use of high-energy permanent magnet communication relay RF sensor, the structural form of double coil symmetrical balance tilt plate magnetic circuit structure, the contact spot welding on the belt material after the overall injection molding, higher precision requirements, more sensitive, material requirements are also higher.

　　These gaps are manifested as:

　　In addition to the relay RF sensor design for aerospace and military applications, civil and commercial relay RF sensors lack standard design specifications. It is not exaggerated to say that most domestic relay RF sensor manufacturers currently only stay at the level of tracking imitation research.

　　For ultra-small magnetic circuit structures with permanent magnets, lack of factory actual analysis of communication relay RF sensors, structural forms and calculations, relay RF sensor manufacturers have not been able to accurately describe and use what magnetic circuit structure to form the "three-dimensional field" is the best. Especially in the case of small working air gap and large magnetic leakage distribution, how to effectively use magnetic energy;

　　No one has conducted in-depth research, analysis and practical application of new edge materials and new processes. Such as ultra-fine electromagnetic wires, high-energy permanent magnets, excellent engineering plastics and relay RF sensor accessories, communication relay RF sensor design lacks effective technical support.

　　Lack of not only understand the basic theory of relay RF sensor, design, communication relay RF sensor, structure form technology skills, but also familiar with the special manufacturing equipment of relay RF sensor engineering and technical personnel. The current situation is: relay RF sensor product designers, equipment design and manufacturing personnel are two teams, the lack of technical run-in, generally engaged in the first generation, second generation, third generation communication relay RF sensor design and manufacturing problems are not big, but involving the fourth generation of ultra-small communication relay RF sensor I am afraid it is not so handy.

　　In the field of relay RF sensor production, communication relay RF sensors, especially the third and fourth generation communication relay RF sensors, are undoubtedly an important embodiment of the highest level of relay RF sensor product manufacturing. At present, the rapid development of the information industry has put forward higher and higher technical requirements for communication relay RF sensors, and miniaturization, low power consumption and high reliability requirements have become the inevitable trend of the future development of communication relay RF sensors.

　　With the rapid development of communication equipment, the mounting board space is shrinking, and miniaturization has become an inevitable trend faced by every manufacturer under the premise of not damaging the performance of communication relay RF sensors and structural forms. Communication relay RF sensor from the first generation to the fourth generation size has been reduced from 20mm×10mm×10mm to 10mm×6.5mm, the volume has been reduced by more than 6 times. From the second generation to the fourth generation, the power consumption of the RF sensor of the communication relay is reduced by 50% from 200mW to 100mW, and it has energy saving and memory functions, which effectively reduces the input of the power supply of the whole machine.

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