Vehicle Detector

Vehicle Detector--AMD-CHEJ08/04

The CHEJ-type ground loop vehicle detector employs a 32-bit ARM core processor with FPGA architecture, featuring pure hardware-based detection algorithms. The system combines ARM's flexibility with FPGA's powerful processing capabilities, delivering rapid response, high precision, strong anti-interference performance, and flexible scalability. It is widely applicable for traffic flow monitoring on urban roads, highways, bridges, tunnels, as well as electronic police and security checkpoint systems. 

Key Features

The single device supports 8-channel coil connectivity and enables cascading up to four detectors, offering flexible scalability. 

Each unit can be configured in master-slave mode via DIP switches without requiring additional equipment. Its innovative polling-parallel detection mechanism ensures efficient lane coordination while maintaining interference resistance. When multiple devices are cascaded, coils from different units effectively avoid mutual interference. 

Real-time coil fault detection with automatic recovery after resolution. 

The system's adaptive coil inductance measurement ensures consistent detection accuracy and sensitivity regardless of coil inductance values.

Interface and specification 

8 coil interface, supporting air discharge, TVS, transformer isolation and other protection measures.

1 RS485 serial port, baud rate (9600,38400,57600,115200) can be set by dial code.

Supports up to four detectors in cascade.

8  I/O output interface, which can be configured as switch quantity or level output, and supports short circuit and surge protection.

Supports 8 levels of sensitivity, which can be set by dialing.

The coil inductance ranges from 20 to 2000uH.

12/24VDC input power supply, with anti-reverse function, support overvoltage, overload, surge protection.