| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that incorrect determination is made due to the effect of the waveform of a power line current and the temperature of a rectifying and smoothing circuit. SOLUTION: This charging device for charging for the use of a toll device includes detection means 1-3 for sampling the power line current of the toll device in a predetermined period, and a determining means that compares the values detected by the detection means to a threshold to convert the values into digital values and to determine whether or not the toll device is in use on the basis of the digital values. COPYRIGHT: (C)2005,JPO&NCIPI
|
