Brief Analysis of the Development Trend of Sensors and Detectors
Microelectronic machining technologies include bulk micromachining technology, surface micromachining technology, LIGA technology (X-ray deep lithography, microelectroforming and microreplication technology), laser micromachining technology, and micro-encapsulation technology. The development of MEMS has raised the level of miniaturization, intelligence, multi-functionality and reliability of sensors to a new level. Sensor detection instrument, based on microelectronic technology, built-in microprocessor, or micro-sensor and microprocessor and related integrated circuits (operational amplifier, A/D or D/A, memory, network communication interface circuit) Such as packaged together to complete the digital, intelligent, networked, systematic. (Note: MEMS technology also completes products such as micro-motors or actuators, which will be described in another article.) In terms of networking, currently it mainly refers to the use of multiple field buses and Ethernet (Internet), which must be selected according to the characteristics of each industry. Among them one or more, in recent years the most popular are FF, Profibus, CAN, Lonworks, AS-Interbus, TCP/IP and so on.
In addition to MEMS, the development of new sensors also depends on new sensitive materials, sensitive components and nanotechnology, such as a new generation of fiber optic sensors, superconducting sensors, focal plane array infrared detectors, biosensors, nanosensors, new quantum sensors, miniature gyros , networked sensors, smart sensors, fuzzy sensors, multi-sensors, etc.
Multi-sensor data fusion technology is forming hot spots. It was formed in the 1980s. It differs from general signal processing and also differs from single or multiple sensor monitoring and measurement. It is based on measurement results based on multiple sensors. High-level integrated decision-making process. In view of the miniaturization and intelligentization of sensor technology, based on the information acquisition, multiple functions are further integrated, resulting in convergence. This is an inevitable trend, and multi-sensor data fusion technology has also promoted the development of sensor technology. The definition of multi-sensor data fusion is summarized: the local data resources provided by multiple sensors of the same type or different types distributed at different locations are integrated and analyzed by computer technology to eliminate possible redundancy between multi-sensor information and Contradictions are complemented to reduce uncertainty, and a consistent interpretation and description of the measured objects is obtained, thereby improving the speed and correctness of system decision-making, planning, and response so that the system can obtain more adequate information. Its information fusion appears at different levels of information, including data layer (pixel layer) fusion, feature layer fusion, decision layer (evidence layer) fusion. Because it has the following advantages over single sensor information, that is, fault tolerance, complementarity, real-time, and economy, it is gradually applied. In addition to military applications, the application field has been applied to automation technology, robotics, marine surveillance, seismic observation, construction, air traffic control, medical diagnosis, and remote sensing technology.
China's sensor industry must adapt to the trend of technology and develop both internationally and domestically, and let the sensors and detection instruments seize the opportunity of informationization.
1. Welding Machines - A welding machine is an essential tool for any welding job. It is used to create a welding arc that melts the metal being joined, allowing it to fuse together.
2. Welding Electrodes - Welding electrodes are metal rods that are used to conduct electricity and create an arc. They are coated with a flux that helps to protect the weld from contamination and oxidation.
3. Welding Wire - Welding wire is used in the MIG welding process to feed the welding arc with a continuous supply of wire. It is available in different thicknesses and materials, such as stainless steel, aluminum, and mild steel.
4. Welding Helmets - Welding helmets are designed to protect the welder's eyes and face from the intense light and heat produced during welding. They come in different styles and designs, including auto-darkening helmets that automatically adjust to the brightness of the welding arc.
5. Welding Gloves - Welding gloves are used to protect the welder's hands from heat, sparks, and other hazards associated with welding. They are made from materials such as leather and Kevlar and come in different sizes and styles.
6. Welding Safety Glasses - Welding safety glasses are designed to protect the welder's eyes from the intense light and UV radiation produced during welding. They are available in different shades and styles.
7. Welding Filler Metals - Welding filler metals are used to add material to the weld joint to create a strong, durable bond. They come in different materials, such as stainless steel, aluminum, and bronze.
8. Welding Clamps - Welding clamps are used to hold the metal being welded in place during the welding process. They come in different sizes and styles, including C-clamps, locking pliers, and magnetic clamps.
9. Welding Flux - Welding flux is used to protect the weld from contamination and oxidation during the welding process. It is available in different types, including powder, paste, and liquid.
10. Welding Gas - Welding gas is used in the TIG and MIG welding processes to shield the welding arc from contamination and oxidation. It is available in different types, including argon, helium, and carbon dioxide.
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