【摘要】 介绍了一套在汽车加速度传感器性能测试系统中数据采集终端成功应用的电源系统。该系统以三端稳压集成电路LM317为基础,系统使用了PIC16F877A单片机的控制直流电压继电器,通过切换电路可以得到多路供传感器测试使用的直流电压,同时还设计了提供给控制系统工作的电源。经过实际运行表明,该电源系统运行可靠稳定。更多还原

【Abstract】 This paper presents the design of a data collect terminal voltage source system for automobile sensor performance test.Based on three ends constant voltages integrated circuit LM317,this system uses PIC16F877A to control the relay,and obtains multiple direct voltages for a sensor test through switching cir- cuits.The design of the power source for control system is also given.Practical operations prove that the power source system is reliable and stable.更多还原