AN1611 Using the HCS12X PIT as a 24-bit Elapsed Timer
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چکیده
This application note describes the concept of measuring impact of an object using an accelerometer, microcontroller hardware/software and a liquid crystal display. Due to the wide frequency response of the accelerometer from d.c. to 400 Hz, the device is able to measure both the static acceleration from the Earth’s gravity and the shock or vibration from an impact. This design uses a 40g accelerometer and yields a minimum acceleration range of -40g to +40g.
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