Small modification can make emulational cell phone into a Phoenix (1)

Posted by admin on Jul 2nd, 2010 | 0 comments

Amazing emulational cell phone sales and the contribution to society are evident. It is because of the emergence of emulational cell phones, and then Shenzhen just becomes prosperous. If the emulational cell phone is cheaper than the Chinese cabbage, we have very good reasons to believe that, for the emulational cell phone industries of lower profits day by day, finding new profit growth point is the current top priority. How to make emulational cell phones from the pheasant into a Phoenix? It is very simple, you can simply add a few silicon MEMS gyroscopes to achieve your purpose, do not believe? The answer is as follow.

Whether you add throwing screens or GPS navigation, now the price of emulational cell phone is almost equivalent to the price of a cabbage. So, now how can it be sold as gold price? It is very simple; you can just add silicon MEMS gyroscopes of a few dollars on it. It brings unique benefits that cell phone users can simply rely on just gestures, then they can play table tennis, golf, fire a gun, driving, sailing, flying and other complex postures to control the game, it is the same as Wii.

Silicon MEMS gyroscope added value in the toy market is very large, for example, children can simply use the gesture to control toy helicopters, and back up the direction of movement, the white-collar workers can do with wireless remote control Slide gesture before and after the flip when they make speeches, if the remote control is with two silicon MEMS gyroscopes, it can be used as an air mouse by gesture control.

Currently global suppliers of silicon MEMS gyros are Bosch, ADI (already out of the consumer electronics market, currently only do auto market), ST, InvenSense, Murata, Panasonic and Shanghai Shen Di Semiconductor. Shen Di is created by the returnees, now it settles in Shanghai Zhangjiang Hi-Tech Park, it is the only company specializing in silicon MEMS gyro development and sales company in China, currently it has developed first-generation samples, and mass production is expected until the second quarter of this year. Its current main competitive advantage is the lowest prices of the same performance.

Epson is the only global supplier of quartz MEMS gyroscope currently, the stability of quartz MEMS gyro is the best, but the technological requirements are the highest, in addition to Epson basically no one else can do, its biggest drawback is the ability to lower the impact of anti-gravity, only 300g, and silicon MEMS gyroscope can withstand the impact of 10000g.

Shen Di Semiconductor CEO and founder Zou Bo said: “Shen Di products are now three Design, including the Sony PS3 and Lenovo cell phone. It is expected that market demand this year is in 100 million or so.” He added that currently there no foundry can do silicon MEMS gyroscope in China, we are out to do it. However, we are currently building Changzhou IC packaging to cope with the forthcoming deluge orders.

2009 Mems Inertial Sensors Status And Trends Of 2010

Posted by admin on Jun 12th, 2010 | 1 comment

Inertial sensors including accelerometers (or accelerometer sensor of dollars) and the angular rate sensor (gyroscope) and their single, double, three-axis combined IMU (Inertial Measurement Unit), AHRS (including magnetic sensor attitude reference system).

Is the use of MEMS accelerometer inertial sensing the quality of force measurement sensor, the general standard of quality from the block (sensor element) and the detection circuit. According to the different sensing principle, mainly piezoresistive, capacitive, piezoelectric type, the tunnel current-type, resonance type, thermal and electromagnetic coupling type and so on.

In 1998, the United States CSDL design and development of the first MEMS gyroscope. In the same year, Drapor lab developed another form of MEMS gyroscope.

MEMS gyroscope is the use of vibration-mass has been the base (shell) driven rotation of the Coriolis effect to the principle of the angular velocity sensor is made.

Mainly in the form of framework-driven (inside and outside the framework of the two kinds) comb-drive type, electromagnetic-driven and so on.

IMU because it is combination of MEMS technology, micro-inertial measurement unit, so many places called MIMU. Mainly by the three MEMS accelerometers and three gyro and the solver circuit.

AHRS consists of three magnetic sensors, compared with the IMU, and based on four elements in France to understand calculation, can output directly to a sports body pitch angle, roll angle and heading angle.

Low-precision MEMS inertial sensors, as consumer electronics products are mainly used in mobile phones, game consoles, music players, wireless mouse, digital cameras, PD, hard disk protector, smart toys, pedometer, anti-theft system, GPS navigation, portable. Because of acceleration measurement, tilt measurement, vibration measurement and even rotational measurements and other basic measurements, to be excavated consumer electronics applications will continue to emerge.

Intermediate grade MEMS inertial sensors for industrial and automotive grade products, are mainly used in automotive electronic stability systems (ESP or ESC) GPS-assisted navigation systems, automobile airbags, vehicle attitude measurement, precision agriculture, industrial automation, large-scale medical equipment, robotics , instruments | instruments and meters, construction machinery and so on.

High-precision MEMS inertial sensors as a military-grade and aerospace level products, the main demand high precision, the whole temperature range, shock and other indices. Mainly used in wireless communications satellite, missile seeker, optical targeting systems, stability of the applications; aircraft / missile flight control, attitude control, yaw damping control applications, as well as medium-range missile guidance, inertial-guided GPS navigation applications, remote aircraft ship equipment, battlefield robots.

For consumer electronics of MEMS inertial sensors, the main requirement is that the low price, small size, narrow temperature range, so accuracy is low, or even functional products. Acceleration sensors, light weight, power consumption is small, generally measuring range 1 ~ 10g ~ 50g, Resolution 2mg ~ 10mg, top general in the range ± 300 ° / s, zero-bias in the 500 ° / h ~ 1000 ° / h, so some companies products do not give a zero bias indicators or to give 0.1 ° / s ~ 0.5 ° / s.

MEMS accelerometer can be produced at present the companies are more, most of the semiconductor, such as the United States, ADI, Invensense, ST, Freescale, Sensor Dynamics, MSI (ICSensor), MEMSIC (producer in Wuxi, China) Europe, VTI, Infine, production MEMS gyroscope’s the United States, ADI, Knoix, ST, Europe, Infine, Methes, Japan, Murata, National, Oki, Fujitsu. December 3 Di Semiconductor Co., Ltd. Shenzhen, Shanghai, China issued a consumer-grade MEMS gyro, a company in Wuxi is also in development.