In addition to military use, sensors are divided into industrial control sensors and sensors used on end products. Industrial control sensors are widely used in industrial processes in the fields of machinery manufacturing, chemical, metallurgy, electronics, energy, petrochemical, textile, pharmaceutical manufacturing, food, beverage, and tobacco. In addition to industrial control, sensors are also widely used in end products such as automotive electronics, home appliances, electronic communication equipment and special equipment.
2. Industrial control sensor
2.1 Definition and classification
Industrial control sensors are sensors used in industrial automation measurement and control, including photoelectric sensors, pressure sensors, inductive sensors and capacitive sensors.
2.2 Market size
Thanks to the sustained and rapid development of the macro economy and the in-depth advancement of the industrialization process, China's industrial control sensor industry has made rapid progress in recent years. In 2010, China's industrial control sensor market reached 8.7 billion yuan, a year-on-year increase of 26.1%. During the period from 2006 to 2010, the average annual compound growth rate of China's industrial control sensor market was 16%.
The scale and forecast of China's industrial control sensor market from 2006 to
2015 are shown in Figure 1.
According to the research paper released by the Industrial Policy Division of the Ministry of Industry and Information Technology and the Institute of Industrial Economics of the Chinese Academy of Social Sciences in January 2011, China's industrial development is currently in the second half of the industrialization period, and is rapidly moving towards the late stage of industrialization. During the "Twelfth Five-Year Plan" period, China's industrialization development level will enter the first half of the industrialization period. During this period, China's industrial development will show further deepening of heavy industry, accelerated development of advanced manufacturing, rapid cultivation of strategic emerging industries, and comprehensive acceleration of informationization and industrialization. In addition, the Chinese government has also introduced an adjustment and revitalization plan for the equipment manufacturing industry, including import tariffs and import-linked value-added tax paid for key components imported and manufactured by domestic enterprises for the development and manufacture of large-scale, sophisticated, high-speed CNC equipment. Policy. The state also encourages the integration of industrialization and informatization, and informatizes existing equipment. In addition, the trend of international manufacturing transfer to China has not stopped. Because foreign companies have many advantages in investing in China, such as low cost, cheap labor, preferential policies of local governments, close to the huge Chinese market, etc., the future China's demand for automation equipment will continue to increase. Driven by many favorable factors above, China's industrial automation industry still has a lot of room for growth, and the industrial control sensor market will continue to grow rapidly in the next few years. Taking into account factors such as the growth of the national economy, the process of industrialization and the trend of market historical data, it is estimated that the annual compound growth rate of China's industrial control sensor market will reach 21.5% during 2011~2015. By 2015, the scale of China's industrial control sensor market will be It reached 23.1 billion yuan.
2.3 Market Segments
2.3.1 Inductive sensor
Inductive sensors are sensors that convert measured changes into changes in inductance. The inductive sensor uses electromagnetic induction to convert the measured physical quantity such as displacement, pressure, flow, vibration, etc. into a change in the self-inductance coefficient and the mutual inductance of the coil, and then converts the circuit into a voltage or current change output, thereby achieving non-electricity to Conversion of electricity. Inductive sensors detect physical quantities such as displacement, vibration, force, strain, flow, and acceleration. Inductive sensors are widely used in mechanical equipment manufacturing, engineering machinery, automotive, packaging, textile, rubber and plastics due to their simple structure, high sensitivity, high resolution and response frequency, good resistance to environmental interference, wide application range and cost-effectiveness. , tobacco, steel, petrochemical, new energy and other industries. Inductive sensors are the most widely used sensors in China's industrial measurement and control field. In 2010, the market size reached 2.697 billion yuan, accounting for 31% of the overall market. The rapid development of advanced equipment manufacturing, modern logistics, intelligent transportation, CNC machine tools, energy conservation and environmental protection will bring huge market opportunities for inductive sensors. Inductive sensors will also be a class of industrial control sensors with the greatest growth potential in the next few years. It is expected that the inductive sensor market in China's industrial sector will maintain a rapid growth rate of 26.7% per year from 2011 to 2015. The scale and forecast of the inductive sensor market in China's industrial sector from 2006 to 2015 are shown in Figure 2.
2.3.2 Pressure sensor
A pressure sensor is a sensor that converts pressure into an electrical signal output. It is generally composed of an elastic sensitive component and a displacement sensitive component (or strain gauge). The function of the elastic sensitive component is to apply the measured pressure to an area and convert it into displacement or strain, and then convert it into an electrical signal that is related to the pressure by the displacement sensitive component or strain gauge.
Common pressure sensors include resistance strain gauges, semiconductor strain gauges, piezoresistive, resonant, capacitive acceleration, and fiber optic pressure sensors. The most widely used is a piezoresistive pressure sensor, which has a very low price, high precision and good linearity. The pressure sensor has the advantages of small size, light weight, high sensitivity, stable and reliable, low cost and easy integration. It can be used for measurement and control of pressure, height, acceleration, liquid flow, flow rate, liquid level and pressure, so it is widely used. In various industrial self-control environments, it involves many industries such as water conservancy and hydropower, railway transportation, intelligent building, production automation, aerospace, military, petrochemical, oil well, electric power, ship, machine tool and pipeline. In 2010, the market for pressure sensors in China's industrial sector reached 2.349 billion yuan, a year-on-year increase of 34.2%. During the period from 2006 to 2010, the annual average compound growth rate of the pressure sensor market in China's industrial sector was 20.0%. The scale and forecast of China's industrial pressure sensor market from 2006 to 2015 are shown in Figure 3.
2.3.3 Photoelectric sensor
The photosensor is a sensor that uses a photoelectric element as a detecting element. Because the photoelectric sensor has the characteristics of long detection distance and no influence on the detected object, it is widely used in logistics warehousing, semiconductor electronics manufacturing, automobile manufacturing, gated elevator, textile, printing, machinery and other industries. At present, the automatic weighing and packaging industry involves a wide range of industries, including packaging machines, combination scales, weight detection, metal detection, X-ray inspection machines, etc., and fully uses photoelectric sensors to expand the scope of its use to Guangdong Kenwei and Shanghai Soontrue. Representatives of domestic products, Guangdong Kenwei Intellectualized Machinery Co., Ltd., under the jurisdiction of combination scales, linear scales, re-inspection, gold inspection, manipulator five series of products, all using a large number of photoelectric sensors for weighing and testing, with packaging machinery manufacturers With the rise, the market capacity of the photoelectric sensor is bound to develop rapidly.
In 2010, the market size of photoelectric sensors in China's industrial sector reached 1.74 billion yuan, a year-on-year increase of 29.1%. During the period of 2006-2010, the annual compound growth rate of the capacitive sensor market in China's industrial sector was 19.8%. The scale and forecast of the photoelectric sensor market in China's industrial sector from 2006 to 2015 are shown in Figure 4.
2.3.4 Capacitive sensor
A capacitive sensor is a device that converts a measured change into a change in capacitance. Capacitive sensors are widely used in displacement, acceleration, vibration, pressure, differential pressure, liquid level, and aliquot content due to their simple structure, small size, good dynamic response, high sensitivity, high resolution, and non-contact measurement. And other areas of testing.
In 2010, the market for capacitive sensors in China's industrial sector reached 609 million yuan, a year-on-year increase of 35.0%. During the period from 2006 to 2010, the annual compound growth rate of the capacitive sensor market in China's industrial sector was 21.9%. The scale and forecast of China's industrial capacitive sensor market from 2006 to 2015 are shown in Figure 5.
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