MEMS acceleration sensors - core UAV
Market size and scope of the drone continued to flourish new applications are emerging.
UAV applications are increasingly common, whether it is e-mail or parcel delivery, entertainment, security monitoring, agricultural or industrial management for children and the elderly, or aerial photography to open up new vision. Recently, however, its flight capacity significantly increased to make it more secure, more stable and easier to control, and thus can be used for a wider range of real-life applications.
One key element of this improvement is to use a high-performance micro-electromechanical systems (MEMS) sensor. And UAV sensor market is growing rapidly: unmanned aerial vehicles and helicopters toys in MEMS motion sensors (ie accelerometers, gyroscopes, IMU and pressure sensors) market will have a lot of space.
Effect MEMS acceleration sensor UAV flight performance due to inertial MEMS acceleration sensor to ensure stable UAV direction thereof, and may be precisely controlled by the user, even autonomous flight. However, some design challenges unmanned systems will become very complicated, for example, the motor is not perfectly calibrated, the system may dynamically vary according to the payload, the operating conditions may suddenly change, or sensor errors. These challenges will result in the locating process deviation, and eventually lead to positional deviation during navigation, unmanned aerial vehicles and even cause failure. For UAVs beyond the scope of toys, high quality MEMS sensors and advanced software is essential.
UAV precision inertial measurement unit (IMU) pressure sensor, a geomagnetic sensor, an application specific sensor node (ASSN) and the sensor data fusion has a direct and substantial effect on flight performance. Size limitations and harsh environments and operating conditions (such as temperature variation and vibration) sensor will be required to a new level. MEMS sensor must be avoided as much as possible these effects, and to provide accurate and reliable measurements. There are many ways to achieve excellent flight performance: software algorithm, data fusion and sensor calibration; mechanical design systems, such as reducing vibration, and selecting a MEMS sensor according to the manufacturer's own UAV needs and requirements. Let's take a closer look at some examples of MEMS sensor and reference.
