Patent ID: 8589216

Claim:
An intelligent charging system for use in a parking lot, the intelligent charging system comprising: an on-board unit, a detecting unit, and a means of payment, wherein: the on-board unit is disposed on a vehicle and configured to calculate a total parking duration of the vehicle as a parking time parameter, derive a parking fee according to the parking time parameter and a rate parameter stored in the on-board unit, and deduct the parking fee from the means of payment via a payment module; the detecting unit is configured to, through information interaction with the on-board unit, determine whether the on-board unit operates normally; the detecting unit comprises a query module configured to send a query to the on-board unit; the on-board unit comprises a responding module configured to send status information of the on-board unit to the detecting unit in response to the query; and the detecting unit further comprises a processing module configured to determine whether the on-board unit operates normally based on the status information of the on-board unit and legal information of the on-board unit stored in the detecting unit.