摘要
设计一种对行进中的汽车前方的障碍物进行实时测距的超声波测距系统,包括超声波测距原理,硬件设计,使系统能及时进行障碍物距离的显示及声光报警处理;重点突出利用数字传感器DS18B20对温度进行测量,利用声速与温度之间的校正公式对声速进行校正,提高了距离的测量准确度。
An ultrasound distance measurement system including its principle and hardware design is introduced,which can measure the distance to the forward barrier of automobile in marching.It can perform the barrier distance display and warning processing in time.It emphasizes on the temperature measurement circuit with the digital sensor DS18B20.And it uses the correction formula to correct the ultrasound speed,so it improves the measuring accuracy.
出处
《仪表技术》
2010年第11期47-49,共3页
Instrumentation Technology
