SENSOR POWER MANAGEMENT

摘要

A sensor power management arrangement includes a signal processing circuit configured to receive signal from a sensor, to test the signal against at least one criterion, and to pass the signal for further processing in response to the signal passing the at least one criterion. In this way, only signals that are of a sufficient importance or significance will consume the maximum amount of processing energy and through processing by later processes or circuitry. Should a signal from a sensor not be strong enough or meet other criteria, power will not be wasted in preparing that signal for provision to the microcontroller or microprocessor. Additional flexibility in the sensor power management can be realized by adjusting the criteria against which the sensor signal is compared based on a status of the sensor apparatus.

主权项

1. An apparatus comprising:
a sensor configured to output an analog signal in response to detecting a physical phenomenon; a signal processing circuit configured to receive the analog signal and to test the analog signal against at least one criterion and to pass for further processing information related to the analog signal in response to the analog signal passing the at least one criterion.