基于霍尔传感器的制动踏板行程测量系统设计

为了解决驾驶模拟器中对制动踏板行程的数据采集需求,使其能精确判断出制动踏板所处的位置,设计了一种由2个霍尔传感器、7个小磁块和1个单片机控制系统组成的制动踏板行程测量系统,并介绍了其原理与实现方法。采用霍尔效应原理来测量制动踏板的行程,通过霍尔传感器感应到磁块后输出脉冲信号,将脉冲信号进行反向和相位解调处理后输入单片机控制系统;单片机控制系统根据脉冲信号计算得到制动踏板行程。结果表明,该测量系统的测量误差小于等于±3%,测量性能稳定,且具有体积小、成本低等优点,可以满足对制动踏板行程进行测量的需要。

Design of brake pedal displacement measuring system based on Hall sensor

To solve the requirements of collecting the brake pedal displacement data in the driving simulator and locate the brake pedal position accurately,a brake pedal displacement measuring system which consists of two Hall sensors,seven small magnets,one SCM control system was presented,its working principle and realizing method were introduced.The Hall effect principle was used to locate the brake pedal position.The pulse signal was detected and output by Hall sensors,and was sent to the SCM control system after phase reverse and demodulation.The SCM calculated the brake pedal displacement based on the pulse signal.The result proves that the measurement error of the system is less than ±3%,and the measuring performance is stable.It also has the advantages of small dimension and low cost.It can fulfill the requiring of measuring the brake pedal displacement.9 figs,6 refs.