The future development trend of automotive sensor technology is miniaturization, multi-function, integration and intelligence.
At the end of the 20th century, the development of design technology and material technology, especially Mems (micro-electromechanical system) technology, brought micro-sensors to a new level, using micro-electronic mechanical processing technology to integrate micron-level sensitive components, signal processors, and data. The processing device is packaged on the same chip, it has the characteristics of small size, low price, high reliability, etc., and can significantly improve the system test accuracy. The Mems technology can be used to make miniature sensors that detect mechanical, magnetic, thermal, chemical, and biomass. Due to the advantages of Mems miniature sensors in reducing the cost of automotive electronic systems and improving their performance, they have begun to gradually replace sensors based on traditional electromechanical technology. Mems sensors will become an important part of the world’s automotive electronics.
Automotive sensors and electronic systems are developing in the direction of using Mems sensors. Philips Electronics and Continental Treves have sold 100 million sensor chips for automotive ABS systems in 10 years, reaching a new milestone in production. The two companies jointly develop forward-looking technologies for active magnetic field sensors, and the products are applied to the latest cars produced by car manufacturers. Continental Teves uses this magnetoresistive speed sensor to make wheel speed sensors for ABS systems, anti-skid systems, etc.
The Mems sensor has low cost, good reliability, and small size. It can be integrated in a new system with a working time of several million hours. The earliest Mems devices are absolute pressure sensors (Map) and airbag acceleration sensors. The MEMS/MST products that are being developed and produced in small batches include: wheel speed rotation sensor, tire pressure sensor, refrigeration pressure sensor, engine oil pressure sensor, brake pressure sensor and deviation rate sensor, etc. In the next 5-7 years, Mems devices will be widely used in automotive systems.
With the development of microelectronics technology and the rapid increase in the application of electronic control systems in automobiles, the market demand for automotive sensors will maintain rapid growth. Miniaturized, multifunctional, integrated and intelligent sensors based on Mems technology will gradually Replace traditional sensors and become the mainstream of automotive sensors.
At the beginning of the 21st century (around 2010), the general trend of the development of sensitive components and sensors is miniaturization, integration, multifunction, intelligence, and systemization. The main technologies in the sensor field will be extended and improved on the existing basis, and the development and industrialization of a new generation of sensors will be accelerated.
Micro-machining technology (MEMT) and micro/nano technology will be developed at a high speed, and will become a revolutionary high-tech in the field of sensors in the 21st century. MEMS products (microsensors and microsystems) made by MEMT have unique advantages such as epoch-making small size, low cost, and high reliability. Enter the commercial market.
With the accelerated development of new sensitive materials, the mutual penetration and comprehensive utilization of various disciplines and new technologies such as microelectronics, optoelectronics, biochemistry, information processing, etc., it is expected that a batch of novel and advanced sensors will be developed. Such as: a new generation of optical fiber sensors, superconducting sensors, focal plane array red array detectors, biosensors, diagnostic sensors, smart sensors, genetic sensors, and fuzzy sensors.
The research, production and application of silicon sensors will become the mainstream. The semiconductor industry will more effectively drive sensor design and manufacturing technology; and microprocessors and computers will further drive the data management and collection of a new generation of smart sensors and network sensors.
The replacement cycle of sensitive components and sensors will become shorter and shorter, and their application fields will be expanded. The application of secondary sensors and sensor systems will increase significantly, and the proportion of cheap sensors will increase, which will surely promote the rapid development of the world sensor market. develop.
The proportion of high-tech applications in sensor technology has increased. Sensing technology involves the intersection of multiple disciplines, and its design requires comprehensive theoretical analysis of multiple disciplines. Conventional methods have been difficult to satisfy, and CAD technology will be widely used. For example, in the early 1990s, foreign countries developed MEMS CAD software for silicon pressure sensor design, large-scale finite element analysis software ANSYS, including analysis modules of force, heat, sound, fluid, electricity, and magnetism. Success in design and simulation.
The sensor industry will further develop in the direction of production scale, specialization and automation. The plane process technology of industrialized mass production will be the main driving force to promote the substantial reduction of sensor prices. The post-process of sensor manufacturing, the automation of packaging process and test calibration (the cost of both accounts for more than 50% of the total cost of the product), will become a key production process to make breakthroughs.
The corporate structure of the sensor industry will still present a pattern of “large, medium, and small simultaneously” and “grouping and specialized production coexistence”. Large group companies (including multinational group companies) will increasingly show their monopoly effect. However, specialized production of small and medium-sized enterprises still have room and opportunities for survival and development because they can adapt to the needs of small batch products in the market.
Multifunctionalization means that one sensor can detect two or more characteristic parameters or chemical parameters, thereby reducing the number of automotive sensors and improving system reliability.
Integration refers to the use of IC manufacturing technology and fine processing technology to make IC-type sensors.
Intelligence refers to the combination of sensors and large-scale integrated circuits, with a CPU, which has an intelligent function to reduce the complexity of the ECU, reduce its volume, and reduce costs.
Post time: Oct-11-2021