Sensor as the entrance of data collection, has become the heart of things, is one of the key technologies of things. Is a use of physical, chemical, biological characteristics to perceive the external environment Sensor of the monitoring device, through the induction of material to detect external information, in accordance with certain rules into analog or digital signals and output. Usually by the sensing element, conversion components, conversion circuits and auxiliary power supply modules.
   Sensor external information of the perception and the translator, constitute the bottom of the business application of things, is the Internet of things to obtain information on the core and foundation. Therefore, the scale of application of things and the expansion of the market led the Internet of things upstream of the industrial chain sensor development. According to idc data show that the next five years, the number of Internet connectivity will reach 30 billion scale, and China by the national policy and population welfare will become the future Suction Control Valve of the fastest growing Internet of things a country. Thus pulling the sensor market in China also showed more optimistic about the scene. The sensor's industrial chain includes chip design, manufacturing, packaging and testing, as well as overall solutions and system applications. Design and packaging testing is the middle part of the industrial chain, responsible for the production and manufacture of sensor devices, device performance and function related to the test. The overall program and system application is the downstream link of the industrial chain, responsible for manufacturing terminal electronic products, and put on the market. In the whole industry chain structure, the sensor chip design is the core, the market share is mainly concentrated in the United States, Germany, Japan's giant enterprises, representative companies are Bosch, avago, knowles and so on. There are two modes of manufacturing, one is the traditional sensor manufacturers have their own processing technology, the other is a special sensor processing foundry. As the sensor manufacturing links, equipment, high input costs, low profit margins of single-chip, so small-scale processing plant survival is difficult. Therefore, more and more chip designers began to turn to the OEM model, and the output value of the factory gradually to Silex Microsystems, Teledyne DALSA, TSMC and other large enterprises gathered. At the same time, in the manufacturing sector, Taiwan and mainland China market share is relatively high, typical enterprises have TSMC, SMIC and so on. Packaging testing needs to focus on the sensor product integration, size, energy consumption, etc., is also a higher threshold of access to a link.

  From the sensor industry chain structure, the sensor upstream link technology threshold high, early investment, monolithic profit margins are low, and thus need to increase the shipments in order to obtain substantial income. To this end, the sensor industry chain structure is relatively speaking, relatively stable, clear links in all aspects. However, for the downstream of the industrial chain, with the integration of sensor functions, intelligent processing capabilities, the traditional sensor manufacturers began to enter the program and application areas, began to introduce Fuel Rail Pressure Sensor some end products, such as DENSO for automotive electronics manufacturing sensors, and Japan Car prices cooperation, the introduction of navigation, hp launched the printer, knowles launched headset products.
  In the market share of the sensor, whether in the region, or the distribution of enterprises have shown a monopoly trend. Industrial output value to Germany, the United States, Japan gather, three countries occupy 60% of the global share; in the enterprise distribution, the world's top ten enterprises accounted for more than 50% of total output value, and the top ten enterprises, the uneven distribution of output , The highest share of Bosch is the lowest share of panasonic more than three times, the business fuel metering valve leading edge is very obvious. For China, China's current number of enterprises ranked second in the world, but the output value is much lower than Japan. Therefore, from this perspective, the output value of Chinese enterprises is relatively low. This reason can be attributed to the technical level of Chinese enterprises is not advanced enough.