Patent ID: 9176164
Filing Date: 2015-11-03
Classification: G01P,G06F,H04W

Abstract:
1. A sensing device comprising: a sensor module that includes a group of sensors, at least one of which being a motion sensor, the sensor module being configured to output a sensing result; a control unit configured to switch between an overall operation mode in which all of the group of sensors operate and a partial operation mode in which a part of the group of sensors operate based on an output from the motion sensor, the control unit being configured to output a mode control signal when the control unit switches between the overall operation mode and the partial operation mode; a data generation unit configured to generate output data based on the sensing result of the sensor module at a predetermined rate, wherein the predetermined rate is changed at multiple stages based on the mode control signal and an elapsed time after the mode is switched between the overall operation mode and the partial operation mode, the control unit calculates a mean of a plurality of outputs from the motion sensor, the control unit switches from the overall operation mode to the partial operation mode when the mean is smaller than a first threshold in a predetermined time, the control unit switches from the partial operation mode to the overall operation mode when the mean is larger than a second threshold, the second threshold is greater than or equal to the first threshold, and the predetermined time is more than several seconds.