| 摘要 |
A current sensor, which senses current passing through a harness via a terminal of a battery, includes a fixed part to which the harness is fixed, a resistor which is inserted between the terminal and the fixed part, a circuit board which measures current passing through the resistor based on a potential difference between two positions along the direction in which current is passed through the resistor, and a case which accommodates the resistor and the circuit board. The circuit board includes a plurality of amplifiers which amplify potential difference between the two positions, an analog-digital converter which converts output voltages of the amplifiers into digital data of a predetermined number of bits, and a current measuring/processing unit which measures current passing through the resistor based on the digital data outputted from the analog-digital converter.
|
