Patent ID: 9037789
Filing Date: 2015-05-19
Classification: G01D

Abstract:
1. A sensing device comprising: a sensor; a non-volatile first memory in which a parameter associated with the sensor is stored; a second memory; a memory control unit that performs an initialization process in which the parameter from the first memory is read and written into the second memory when power is turned-on and performs a refresh process after the initialization process and before power is turned-off, during the refresh process, the memory control unit reads the parameter from the first memory and overwrites the second memory with the parameter; a processing unit which carries out signal processing of the sensor based on the parameter written in the second memory; a register unit that determines whether to permit a refresh function wherein, when the refresh function is permitted, the memory control unit is able to perform the refresh process and the register unit transmits a refresh cycle information to the memory control unit, and when the refresh function is not permitted, the memory control unit does not perform the refresh process; and an output unit that externally outputs output data from the processing unit, which is sampled by an external device, wherein the refresh cycle information outputted by the register unit includes information regarding a refresh cycle, the refresh cycle is less than or equal to a cycle of sampling of the output data by the external device, and the memory control unit performs the refresh process when permitted by the register unit, and the memory control unit carries out the refresh process within the refresh cycle provided in the refresh cycle information.