MEMSIC Inc. has released the 624x Family of acceleration and tip-over sensor components that includes four sensors, the MXD6240 and 41AU, MXC6244AU, MXC6245XU.
- Provides tip-over and acceleration sensing in a wide range of applications, such as off-road vehicle tip-over detection, vehicle navigation and Digital SLR camera horizontal position detection
- Features proprietary thermal accelerometer technology that utilizes heated gas molecules to sense acceleration instead of mechanical beam structure
- Transducer exhibits natural low-pass frequency response with virtually no mechanical resonance and extremely high accuracy over range of temperatures
- Well suited to harsh and/or high vibration environments, where competing sensor solutions can exhibit false readings or other errors due to resonance
- MXD6240 and MXD6241AU are autonomous inclination sensors with eight built-in, pin-programmable tip-over angle thresholds from 40-70 degrees making them suited for tip-over applications where no microcontroller is available
- Digital output changes state to alert system to tip-over or fall-down event if device orientation with respect to vertical exceeds programmed threshold angle
- Inherent low-pass response, internal anti-vibration filter provides >45 dB attenuation above 25 Hz, and >60 dB attenuation above 50Hz
- MXC6244AU and MXC6245XU are complete two axis I2C interface accelerometers each with 1 mg of resolution
- MXC6244AU is ±8g full scale range device and includes internal anti-vibration filter and eight angle thresholds programmable through I2C interface
- MXC6245XU is a ±2g full scale range device targeted at cost sensitive applications not requiring the programmable anti-vibration filter or the eight programmable tip-over angle thresholds
- MXC6245XU offers 12 bits of resolution (1 mg) and has the same outstanding over temperature bias performance of typically 0.1 mg/C
- MXC6244AU can be used directly in Engine Control Units (ECUs) for the same application thereby allowing for elimination of separate tip-over module
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