报警单元 meaning in English

alarm unit
alcohol resistant foam concentrate

Based on the model of safe following distance , the design blue print of system is presented in the text . using the multiple impulses horae rotate speed sensor to measure the vehicle speed and nanometer radar to measure the distance of own vehicle to frontal vehicle , and analyzing and judging collected information by at89c51 which is the control centre of the system
本文在安全跟车模型的基础上，提出了系统方案：采用霍尔多脉冲转速传感器测量汽车的速度，毫米波雷达测量两车的距离和相对速度，利用at89c51作为信息采集单元的控制中心，对各种信息进行分析判断，当行车距离小于报警距离时启动相关的报警单元。
This system is composed of the signal testing unit ( including leaning wheel unit and sensor unit ) , the signal handling and analyzing unit ( szo type digital analyzing instrument with multiple function in intellectual diagnosing and controlling ) and the digital display , alarming and controlling unit ( including dsb - 113 type digitally early warning and alarming unit with multiple function and controlling point )
系统主要由信号检测单元(包括靠轮单元和传感器单元) 、信号处理与分析单元( szo型智能诊断、控制用数字多功能分析仪单元)和数字显示、预警、报警、控制单元(包括dsb - 113型多功能数字预、报警单元和控制单元)组成。