Development of the hottest relay technology

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Editor's note: the popularity of computer technology has significantly increased the demand for relays for microcomputers, and relays with microprocessors will develop rapidly. With the rapid development of microelectronics technology, electronic computer technology, modern communication technology, optoelectronic technology and space technology, attention is put forward to relay technology: generally, for objects after 20kg, the breaking point ratio can be adjusted to 80 to meet the breaking requirements. The smaller the breaking point ratio is, the larger the breaking value grabbed by the sensor is, and the larger the breaking point ratio is, the smaller the sensor grabs is. New requirements, new processes The development of new technology undoubtedly promotes the development of relay technology

The rapid development of microelectronic technology, electronic computer technology, modern communication technology, optoelectronic technology and space technology has put forward new requirements for relay technology. The development of new processes and technologies undoubtedly promotes the development of relay technology

the rapid development of microelectronic technology and ultra large scale IC also puts forward new requirements for relays. The first is miniaturization and flakiness. Such as military TO-5 (8.5) in IC package × eight point five × 7.0mm) relay, which has high vibration resistance and can make the equipment more reliable; The second is combination and multi-function, which is compatible with IC and can be built-in amplifier, and the sensitivity is required to be improved to micro watt level; The third is all solid. Solid state relay has high sensitivity and can prevent electromagnetic interference and radio frequency interference

The popularization of computer technology has significantly increased the demand for relays used in microcomputers, and relays with microprocessors will develop rapidly. In the early 1980s, the digital time relay produced in the United States can be controlled by instructions. The combination of relay and microprocessor can form a compact and perfect control system. At present, the industrial robots controlled by computers are growing at a rate of 3.5% per year. Now, the computer-controlled production system can produce a variety of low-cost relays on one production line, and can automatically complete a variety of operations and tests

the development of communication technology has far-reaching significance for the development of relays. 1. The insulation thickness is removed. 1. Cut the protective layer. On the one hand, the rapid development of communication technology has increased the application of the whole relay. On the other hand, because optical fiber will be the aorta of information society transmission in the future, new relays such as optical fiber relay and reed switch will appear under the promotion of optical fiber communication, optical sensing, optical computer and optical information processing technology

optoelectronic technology will greatly promote relay technology. In order to realize the reliable operation of optical computers, bistable relays have been trial produced at present

in order to improve the reliability of aerospace relays, the expected relay failure rate should be reduced from the current 0.1ppm to 0.01ppm; The manned space station is required to reach 0.001ppm. The temperature resistance should be above 200 ℃, the vibration resistance should be higher than 490m/s, and it should be able to withstand 2.32 × 10 (4) c/kg α Radiation. In order to meet the space requirements, it is necessary to strengthen the reliability research and establish a special high reliable production line in the deposition process

the development of new special structural materials, new molecular materials, high-performance composites, optoelectronic materials, as well as oxygen absorbing magnetic materials, temperature sensitive magnetic materials, and amorphous soft magnetic materials is of great significance to the development of new magnetic holding relays, temperature relays, and electromagnetic relays, and relays with new principles and new effects are bound to appear

with the improvement of miniaturization and chip technology. The relay will be developed in the direction of two-dimensional and three-dimensional micro and surface mount with the size of only a few millimeters; At present, the volume of relays produced by some international manufacturers is only 1/4 ~ 1/8 of that of 5 ~ 10 years ago. Because when reducing the volume of the electronic machine, smaller relays with a height no higher than that of other electronic components are required. Communication equipment manufacturers are more eager for intensive relays. The size of a BA series ultra dense signal relay produced by fujitsutakamisawa company in Japan is only 14.9 (W) × 7.4 (beautiful appearance d) × 9.7 (H) mm, mainly used for fax machines and modems, capable of withstanding 3KV fluctuating voltage. The volume of as series surface mount relays launched by the company is only 14 (W) × 9(D) × 6.5(H)mm。

safe and reliable relays, such as high insulation relays, are particularly needed in the field of power relays. The JV series power relay launched by fujitsutakamisawa, Japan, contains five amplifiers, adopts a high insulation small section design, and the size is 17.5 (W) × 10(D) × 12.5(H)mm。 As the reinforced insulation system is adopted between the core and the outer edge, its insulation performance reaches 5kV. The power consumption of mr82 series power relay launched by NEC in Japan is only 200MW

various amplification, time delay, contact jitter elimination, arc extinguishing, remote control, combinational logic and other circuits are installed inside the relay to make it have more functions. With the breakthrough of SOP Technology (smalloutlinepackage), manufacturers are likely to integrate more and more functions. The combination of relay and microprocessor will have a wider range of special control functions, so as to achieve high intelligence

The rise of new technologies in groups will promote the competitive development of various relays with different principles, different performances, different structures and applications. Driven by scientific and technological progress, demand traction and the development of sensitive and functional materials, the performance of special relays, such as temperature, RF, high voltage, high insulation, low thermal potential and non electric control relays, will be improved day by day

electromagnetic relay (EMR) has a history of more than 150 years since it was first used. With the development of electronic industry, especially the breakthrough of optical coupling technology in the early 1970s, solid state relays (SSR, also known as electronic relays) have sprung up. Compared with the traditional relay, it has the advantages of long service life, simple structure, light weight, reliable performance and so on. Solid state relays have no mechanical switches, and have important characteristics such as high compatibility with microprocessors, fast speed, shock resistance, vibration resistance, low leakage, etc. At the same time, because this product has no mechanical contact and does not produce electromagnetic noise, it does not need to add components such as resistors and capacitors to keep silent. The traditional relay needs these additional components, so the traditional relay is often cumbersome and complex, and the cost is high

in the future, the market development of small sealed relays will focus on TO-5 relays and 1/2 crystal cover relays compatible with IC. Military relays will accelerate the transfer to industry/commercialization. U.S. military relays account for about 20% of the total relay. The general relay market continues to develop in the direction of small, thin and plastic packaging. Relays for small printed boards will still be the mainstream products for the development of general relay market. Solid state relays will become more extensive, and the price will continue to decline, and will move closer to high reliability, small size, high surge current impact resistance and anti-interference. The reed relay market will continue to expand. The application field and demand of surface mounted relays will be on the rise

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