摘要
汽车轮速传感器是防抱死制动系统(ABS)的关键部件之一,其性能的好坏直接决定了ABS性能的高低。磁电式ABS转速传感器的输出近似为正弦信号,通过对正弦信号幅值、频率、有效值的测定,可以分析获得传感器性能。本文以STM32F407为主控制板,以快速傅里叶变换为主要工具,设计了一款数字控制正弦信号测量装置进行各参数测量。经过实验验证,本装置可在5%的误差内精确测量输入信号的频率、有效值、峰值、失真度并还原信号波形。此外,为了便于观测,本设计借助蓝牙通信模块将测量数据同步上传到手机端。
The automobile wheel speed sensor is one of the key components of anti-lock braking system(ABS),and its performance directly determines the level of ABS performance.The output of the magnetoelectric ABS speed sensor is approximately a sinusoidal signal,and the performance of the sensor can be obtained by analyzing the amplitude,frequency and effective value of the sinusoidal signal.This work takes STM32F407 as the main control board and uses fast Fourier transform as the main tool to design a digitally controlled sinusoidal signal measurement device to measure various parameters.It has been verified by experiments that the device can accurately measure the frequency,effective value,peak value and distortion of the input signal within 5%error and restore the signal waveform.At the same time,in order to facilitate observation,this design uses the bluetooth communication module to synchronously upload the measurement data to the mobile phone.
作者
任梦圆
黄芳灵
张荣福
REN Mengyuan;HUANG Fangling;ZHANG Rongfu(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《光学仪器》
2023年第2期36-45,共10页
Optical Instruments
基金
上海理工大学创新创业项目(SH2021031)。
关键词
ABS传感器
正弦信号测量
STM32
快速傅里叶变换
蓝牙通信
anti-lock braking system sensor
sinusoidal signal measurement
STM32
fast Fourier transform
bluetooth communication
