the paper through to set forth the design tenets of in vibration isolation in electronic equipment,make a concrete analysis of absorbing shock and concussion in truck-borne equipment for numerical control well logging computer system,prove this equipment reliable and practical,have a certain value.

Study on simulation test platform of on-board equipment of CTCS Level 3;

Probe into development of on-board equipment for train control system;

Study on On-Board Equipment of Cab Signal Based on GSM-R;

It was composed of two parts: On Board Unit (OBU) which consisted of ETC wireless module and IC card read-writer of radio frequency, and Road Side Unit (RSU) which possessed GPRS module.

The study analyzes the traditional highway tolls collection system and recent Non-stop Electronic Toll Collection System,and designs a new generation of On Board Unit(OBU) integrating GPS,GSM / GPRS to address the disadvantages of current toll collection practice.

The plan through the design of OBU(on board unit)and RSU(road side unit)can improve the harmonious relation between road and vehicle system,implement the effective communication between vehicle-road and vehicle-vehicle,and improve the efficiency of use of vehicle and road.

The classify of in-vehicle networks and main communicate protocols were introduced in this paper.

In order to adapt the development of the vehicle electronic equipment, the in-vehicle network system has come forth.

A method of multimode information collection based on in-vehicle network was introduced aiming at the problems that existing information measure methods of automobile are difficult to satisfy the need on measure precision,steady state and dynamic response at the same time,and the controllers are difficult to share information resources.

In the time of communications changing structure and fixed-mobile convergence scheming, vendition of the fixed network equipment is faced with much more venture.