ERP System Design

The new designed system consists of the management center (MC), the in-vehicle unit (IU), and the communication link (CL) modules. The proposed management center of next ERP system is functioned to tracking, monitoring, charging and guiding all the vehicles traveling on the road. Charging and guiding scheme is on the basis of collected traffic information and map database.

The Central Communication Server (CCS) is used to exchange information through Internet, which is the interface between the in-vehicle unit transceiver and the management center. It is not only used for vehicular position to be sent to the management center from the vehicle side, but also for the road map to be transmitted to the vehicle when it requires to display but has no map itself. The guidance command and charging scheme are also transmitted to the vehicle from the communication server. Traffic information analysis provides the statistics of traffic flow on the road on the basis of the real time vehicle position, makes charging scheme for each road and guiding scheme for the vehicle. Tracking and Monitoring provides an interface for the operator in the management center.

The in-vehicle unit (IU) provide continuous vehicular position output even in urban area where dense high buildings or the tunnel will block the GPS signal. To further improve the positioning accuracy, Map Matching (MM) could be applied in the in-vehicle unit if there is map database and enough processing power or implemented in the management center. The accurate positioning information could be used to assist the traffic flow analysis on the exact road. The Data fusion is mainly for fusing all the sensors' data to get more accurate, robust positioning information. Status provides the vehicular or road status such as alarm, breaking down or congestion. Display shows some related information to the driver including guidance, charging information or electronic map if there has. Transceiver provides two-way data link via wireless network and IP based packet data transmission. The data would be broadcast into the Internet so that any authorized user can make full use of them to provide value-added services. Control card is the crucial part for organizing all these information. Smart card interface is for charging via smart card inserted into the in-vehicle unit. The traffic flow statistics will be dependant on the road where vehicle travels while its position is transmitted to management center.

Map matching algorithm received vehicle position and searches the map database to create the list of road links the vehicle traveled. The required payment is calculated according to the road link price in database and deduction is made from prepaid card or stored to the vehicle ID account for cyclic-based payment.

Updated On: 08.03.30