High Vibration Environments
MEMSIC Thermal MEMS accelerometers are ideal for sensing low-g (<10g), low frequency (<30Hz) accelerations in high-vibration environments because they have no moving parts and no error causing sensor structure resonance. MEMSIC Thermal MEMS accelerometers have a natural Low Pass Filter response <30Hz. Traditional cantilevered beam MEMS devices were originally developed for high-g sensing applications like crash detection and Airbag deployment. As such they had very stiff beams and the MEMS structure had a high resonant frequency, typically above 30kHz. As the traditional cantilevered beam approach was extended to low-g applications the cantilevers were necessarily made less stiff and their associated resonant frequency dropped below 5kHz. If there is energy present at or near the resonant frequency of the MEMS structure in the application. the sensor can report invalid acceleration and bias error. Filtering cannot solve the problem if the front end amplifier of the MEMS device is overloaded. Memsic Thermal MEMS accelerometers elimate these error in high-vibration envirements. To download a whitepaper on our technology, please click here.