Patent ID: 7928328

Claim:
A weighing machine having a weighing platform and capable of switching the operation state thereof between a standby state in which it is sensed whether an object is placed on the weighing platform and a measurement state in which the object is weighed, the weighing machine comprising: a detection unit for outputting a detection voltage depending on a load acting on the measuring platform; a first data generation unit for generating first data based on the result of A-D conversion of the detection voltage; a second data generation unit for generating second data based on the result of A-D conversion of the detection voltage; and a control unit which stops the operation of the second data generation unit and monitors the first data in the standby state, switches the operation state from the standby state to the measurement state when the control unit senses that the object is placed on the weighing platform, then stops the operation of the first data generation unit and operates the second data generation unit, and outputs the measured weight of the object on the basis of the second data; wherein the first data generation unit consumes less power than the second data generation unit, and the second data generation unit has a higher A-D conversion precision than the first data generation unit.