| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-vehicle exhaust gas measuring device that is constituted compactly and can secure long-time measurement. SOLUTION: In the on-vehicle exhaust gas measuring device, electric power taken out of a battery for a vehicle and electric power from an exclusive power source are supplied together to a measuring section body mounted in the vehicle, and only when the voltage value in the battery for the vehicle is a predetermined value or more, the electric power from the battery for the vehicle is taken out. Therefore, the long-time measurement is allowed using the exclusive power source of which weight and volume are suppressed, and the electric power is not excessively taken out of the battery for the vehicle. COPYRIGHT: (C)2007,JPO&INPIT
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