Precise positioning navigation system and method for indoor vehicles

Abstract

The invention discloses a precise positioning navigation system for indoor vehicles. The system consists of a wireless sensor network (WSN) positioning subsystem, a radio frequency identification (RFID) positioning subsystem and a vehicle trace positioning subsystem and can precisely position and navigate the indoor vehicles. The WSN positioning subsystem comprises a control center, a gateway node, an anchoring node and a moving node; the gateway node, the anchoring node and the moving node form a WSN; the RFID positioning subsystem comprises RFID reader-writers, RFID antennas and passive RFID labels; the passive RFID labels are arranged at equal intervals along an indoor channel; the RFID reader-writer and the RFID antenna are arranged on the vehicles; the vehicle trace positioning subsystem comprises an electronic compass, a photoelectric code disk and a rotating angle sensor; when the vehicles drive in positioning blind areas of the passive RFID labels, the traveling directions, the wheel rotating distances and the rotating angles of the vehicles are measured in real time; traces of the vehicles are calculated, and precise positions of the vehicles can be determined; the precise positions are transmitted to the control center through the moving node of the WSN positioning subsystem; and a vehicle-mounted navigation display module displays the current position and a navigation path in real time.

Description

technical field [0001] The invention relates to an indoor vehicle precise positioning navigation system and a method thereof. On the basis of effectively integrating WSN and RFID positioning technologies, the key technology of vehicle trajectory positioning is used to greatly improve the accuracy of indoor vehicle positioning, and belongs to the technical field of testing and control. Background technique [0002] With the continuous and in-depth development of wireless technology and computer technology, the demand for real-time location information of indoor vehicles in many applications continues to increase, such as forklift management in large warehouses, vehicle guidance in underground parking lots, etc. Indoor vehicle positioning systems are becoming more and more popular. In order to improve the efficiency of indoor vehicle management, accurate indoor vehicle positioning and navigation systems and methods are particularly important. [0003] In the application of the...

AI Technical Summary

Problems solved by technology

Passive RFID positioning technology Since the energy of the electronic tag is provided by the card reader, there is no need for additional batteries on the tag, and its cost is low, the volume is small, and the service life is long, but the reading distance is short, making the positioning range small , if you increase the density of the label, you can achieve a higher positioning accuracy, but it greatly increases the complexity of the system layout, but it is used as a precise positioning calibration point, the complexity is low and it has a better effect

Images