ZigBee-based Vehicle Access Control System

With the increasing raise of people's living standards, the vehicle theft in community, as

well as the total amount of car, has a rapid growth. How to conduct an intelligent management to

the access of internal vehicles efficiently and effectively suffers more and more attention from

various circles.

This paper describes a set of vehicle access control system based on ZigBee wireless

technology. In this system, ZigBee coordinator and its terminal nodes installed respectively in

the entrance of the district and the vehicles, together form a ZigBee wireless sensor network.

Existing system:

At present, the most widely approaches used in vehicle management are:

1) Artificial inquiry identification method

2) Image recognition method

3) Contact IC Card Management

These are all following disadvantage i.e. dominated by personal factors; waste of labor

and difficulty of information communication. Such as large investment, low recognition rate and

susceptibility to weather, difficult to maintain, large investments in infrastructure facilities

Proposed system:

The implementation of this Vehicle Access Control Wireless System is based on ZigBee

technology. According to its applications, its network topology uses the star-shaped wireless

network, which consists of one monitoring center and a number of terminal equipments.

Monitoring center is composed by a computer and a network coordinator. The network

coordinator is a special full-function device (FFD), which can realizes a set number of ZigBee

services. It is responsible for communication with its child nodes, data collection and

dissemination of control information. In this system, the network coordinator is installed in the

duty room. It establishes and manages the network, receives the data and displays them on the

LCD (liquid crystal display). Meanwhile, the coordinator sends the data into the PC (Personal

Computer) through RS-232 serial cable. PC is responsible for storage and further processing of

the data.

Block diagram:

Vehicle:

Child Node:

Power

Supply

RF

Transmitter

Keypad

433.9MHZ

Coordinator Node:

Hardware Requirements:

Micro

Controller

AT89C51

Power

Supply

0

20

40

60

80

100

1st Qtr 2nd Qtr 3rd Qtr 4th Qtr

East

West

North

ZigBee

Transceiver

MAX

232

PC

LCD Display

2.4GHZ

Micro

Controller

AT89C51

Power

Supply

0

20

40

60

80

100

1st Qtr 2nd Qtr 3rd Qtr 4th Qtr

East

West

North

RF

Receiver

Relay

Driver

Gate

Control

ZigBee

Transceiver

2.4GHZ 433.9MHz

Power Supply

AT89C51

RF Transmitter

RF Receiver

ZigBee

Relay

LCD Display

Gate Module

Software Requirements:

Embedded C

Keil Compiler

VB .NET

Application:

Can be used in high security needed area like Government office ,IT parks,

atomic stations etc.

Advantage:

Avoid manpower

Low cost

Easy maintenance