Abstract
In order to meet the needs of real-time positioning and remote dispatching of vehicle, this paper designs a ZigBee-based embedded vehicle terminal and the corresponding ZigBee-GPRS information communication network in hardware and software. With LPC2366 processor and CC2430 RF chip as core, the vehicle terminal acquires the vehicle‘s status in cycle, and completes the vehicle monitoring and scheduling by transmitting data to communication nodes by ZigBee and passing the data on to the monitoring center by GPRS. This vehicle terminal is characterized by small size, low energy consumption and ideal communication distance, which makes the monitoring center effectively monitor and schedule the vehicles.
Highlights
In the era of Internet of Vehicles, vehicles with special purposes such as buses, ambulances and danger carrying vehicles were the application pioneers due to their strong real-time monitoring needs (Wang Xinjian, 2014)
Considering the transmission rate, network quality and module cost, ZigBee is selected as the communication mode between the vehicle terminal and acquisition nodes, and GPRS is used as the
The terminal adopts the multi-modular distributed structure. It is composed of the CPU main board and the MMI board, in which the CPU main board is mainly responsible for the acquisition and encapsulation of vehicle status information, as well as data wireless communication work; the MMI board is mainly responsible for man-machine interaction function and communication with the CPU main board via the bus
Summary
In the era of Internet of Vehicles, vehicles with special purposes such as buses, ambulances and danger carrying vehicles were the application pioneers due to their strong real-time monitoring needs (Wang Xinjian, 2014). Due to the excessively small Bluetooth transmission range (10~100m), the high-density Bluetooth network coverage for the construction of transmission monitoring data will result in excessive cost and unstable transmission effects There is another wireless communication way called ZigBee. ZigBee is a low-power LAN protocol based on the IEEE802.15.4. Considering the transmission rate, network quality and module cost, ZigBee is selected as the communication mode between the vehicle terminal and acquisition nodes, and GPRS is used as the. In this way, the advantages of ZigBee can be utilized, and the existing GSM mobile communication network can be relied on to save the transmission cost from the communication nodes to monitoring center. The program achieved a better balance in terms of its cost, reliability and transmission efficiency
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