| 摘要 |
The present invention relates to a battery alarm system for raising an alarm on recognition of the reduction of output voltage of a battery (31), wherein an analog output voltage value of a battery (31) is converted to a digital value; the digitalized values are inputted for a plurality of times at a predetermined interval to obtain the average value; and when the average value is smaller than the predetermined threshold, an alarm is raised. By obtaining an average value among voltage values inputted for a plurality of times, an alarm can be raised stably with little influence of the fluctuation of the output voltage of the battery (31). <IMAGE> |
