The hottest pressure sensor will become the number

  • Detail

In 2014, pressure sensor will become the number one MEMS device

according to the MEMS and Sensor Research Report of IHS iSuppli company, due to the relatively high price and the continuous expansion of its application in automotive, medical and industrial fields, pressure sensor will become the MEMS device with the highest sales by 2014

because of the strong recovery of the automotive industry after the recession, the sales of pressure sensors last year increased by 26% over 2009 to $1.22 billion, ranking second among all MEMS devices. This year's growth will be moderate, with an expected growth of 6% and sales of $1.3 billion, but the growth rate is expected to reach double digits in 2012

with the steady expansion, the pressure sensor will become the MEMS device with the highest sales in three years, pressing the ubiquitous accelerometer and the increasingly popular gyroscope. Due to the different compensation levels, bare chip calibration and packaging types, including excellent interlaminar shear and tight shear strength, the average price of MEMS pressure sensors currently varies widely, ranging from a few dollars to tens of dollars for high-value industrial and medical applications, and up to several hundred dollars for the most professional applications such as aircraft hydraulic system or flight data measurement, including in harsh media Combination of industrial applications under temperature and pressure conditions

by 2015, the sales of MEMS pressure sensors will reach $1.97 billion, as shown in the figure, with a compound annual growth rate of 10%

mems pressure sensors are widely used in a variety of application fields

mems pressure sensors are thin-film components that deform under pressure. This deformation can be measured by strain gauge (piezoresistive sensing) or by capacitance sensing the change of distance between two surfaces. These two methods are very popular, and the tire pressure monitoring system uses a relatively solid piezoresistive method

the automotive industry is still the largest application field of MEMS pressure sensors, accounting for 72% of its sales, followed by medical electronics, accounting for 12%, industrial areas, accounting for 10%, and consumer electronics and military aviation, accounting for the remaining 6% of the market

in the automotive field, engine management is its main application, including manifold air pressure sensors in gasoline engines and common rail pressure sensors in diesel vehicles, especially in Europe. In order to improve combustion, some organizations are also studying pressure sensors that can work in the cylinder to better measure the accurate proportion of various substances involved in chemical reactions and feed back the data to the engine management system

due to the poor working environment, the price of automotive sensors is much higher than that of consumer sensors. In addition, automotive sensors need a long identification time, and these sensors must be able to work reliably for up to 15 years. Some sensors, such as brake or tire pressure sensors, are critical to vehicle safety

A new application of MEMS pressure sensor in automobile is transmission system pressure sensing, which is usually used in automatic devices, but also used in new dual clutch transmission system. German manufacturer Bosch recently entered the market and launched a MEMS solution that uses oil to protect the silicon film so that it can withstand a pressure of up to 70 bar. Bosch also brought great changes to MEMS pressure sensors a few years ago. At that time, porous silicon was used, which brought highly reliable MEMS devices. These devices have been used in current applications such as side airbag

in the medical market, pressure sensors are mainly used as disposable low-cost catheters for surgery. But they are also used in expensive equipment to sense pressure and differential flow in continuous positive airway pressure (CPAC) machines. These devices have great potential and may become implantable sensors after 2015. But his experiment speed is low, and the implanted sensor can work without battery, which can be used for cardiac measurement and glaucoma monitoring

in the industrial field, the main applications of MEMS pressure sensors include heating, ventilation and air conditioning (HVAC), level measurement, and various industrial process and control applications. For example, in addition to accurate altitude and pressure measurements, aircraft uses sensors to monitor engines, flaps and other components

mems pressure sensors are not particularly hot in consumer and mobile devices

so far, MEMS pressure sensors are not particularly popular in consumer electronics and mobile industry. 4. Experimental force accuracy: 1% better than the indicated value. The sales volume is less than US $20million. But its applications are diverse, including weather stations, sports watches, bicycle computers, diving equipment and pedometers. It can also be used in white appliances, such as water level sensors used in energy-saving washing machines

there are no large-scale applications in the mobile field so far. In the future, high-end intelligence may use pressure sensors as altimeters to support indoor location services, but currently there is no infrastructure in this regard. In the field of tablet computers, so far, pressure sensors have only been used to enable them to display local weather conditions

compared with the extensive use of accelerometers and gyroscopes in the field of consumer electronics and mobile, the application of pressure sensors in this field will still be very limited in the next few years

Copyright © 2011 JIN SHI