| 摘要 |
<p>PURPOSE:To increase reliability of a voltage drop monitor system, by converting a battery voltage into radio wave and transmit it repeatedly every time when switching on the transmitter and analyzing the received codes at the receiver side to comparing it with a previously decided base figures and indicating the consumed degree of the battery. CONSTITUTION:When the switch 6 of a radio wave key 1 for a car is turned on, the voltage of battery 7 is measured at each given interval by a voltage monitor 2 and a code format is output in a code generator 3. The code is converted to radio wave signals 8 and transmitted repeatedly in specified times. On the other hand, signal codes are analyzed in CPU 12 in accordance with the signals received in a receiver 9 and judging signals of the consumed degree of battery are output. The consumed degree of battery 7 is shown on the indicator 13 in the car. In this way, the reliability of the consumed degree monitor of the battery 7 can be increased.</p> |
