Abstract
Intelligent Transport Systems (ITS) is considered the current solve city congestion
and effective means of improving road safety, and traffic data acquisition is the most
basic part of the ITS.
The design of the development of domestic and international data acquisition
system status and problems of traffic data demonstrated the need for information
collection system, traffic data collection system is proposed the basic requirements
discussed in detail the magnetic fuze based HMCl022 signal acquisition module, The
hardware including magnetic detection circuit, signal amplifier and RF chips based
NRF9E5 transceiver circuit. Check through the HMC1022 two-axis geomagnetic field
changes, after appropriate conversion calculation, can effectively reduce the error, and
then after NRF9E5-based transmit and receive modules to achieve long-distance
communications, than before induction coil ring collection, low cost, high accuracy,
maintenance convenient. Solar-powered wireless transmitter module using a better
chance of reducing the maintenance of the equipment, reducing equipment maintenance
on the traffic.
Software using c language and integrated environment in KEIL edit, compile.
Experimental results show the system with high precision, low power consumption, easy
to use and the advantages of miniaturization.
