智能液位传感器及其测量方法技术

本发明专利技术涉及一种液位信号参数测量的智能传感器及其方法。由传感器和传感器控制单元构成。其特征是：微控制器发出的脉冲信号经过微分电路之后变成一标准的脉冲信号，然后通过驱动电路形成脉冲信号，再由该信号去驱动两个超声波发射传感器；所述超声波接收传感器的回波信号经过放大电路单元之后，再经过比较电路单元形成一个脉冲信号触发单稳态触发电路单元，最后回波信号进入微控制器分析处理。本发明专利技术采用超声波测量技术能够定点和连续测液位，不需要特别防护，克服现有液位传感器不能够对环境温度、湿度、介质成分的变化进行自动适应的不足，安装和维护较方便，结构、方法都较简单，价格低廉，以满足各种不同测量环境的需要。

Intelligent liquid level sensor and measuring method thereof

The invention relates to an intelligent sensor for measuring liquid level signal parameters and a method thereof. Sensor and sensor control unit. Its characteristic is: the pulse signal from the microcontroller through the differential circuit after the pulse signal into a standard form, and then the pulse signal through the drive circuit, then the signal to drive two ultrasonic emission sensor; echo signal of the ultrasonic receiving sensor through the amplifying circuit unit, and then through the comparison circuit to form a unit the pulse signal to trigger monostable trigger circuit unit, the last echo signal into the micro controller analysis processing. The invention adopts the ultrasonic measuring technique to spot and continuous measurement of liquid level, and do not need special protection, to overcome the existing liquid level sensor can not change the environment temperature and humidity, the medium composition was insufficient to automatically adapt to the installation and maintenance are more convenient, the structure and the method is simple, low price, to meet the needs of different measurement environment.

【技术实现步骤摘要】

【技术保护点】
一种智能液位传感器，包括传感器及控制单元，其特征是：所述传感器包括两个超声波发射传感器（４－１）和一个超声波接收传感器（４－２）构成的距离测量传感器（４），所述的控制单元包括与距离测量传感器电连接的信号变送单元（２）、顺序连接在信号变送单元后的微控制器（１）和ＣＡＮ总线通讯单元（３）。

【技术特征摘要】

【专利技术属性】
技术研发人员：郭建甲，范新南，
申请(专利权)人：河海大学常州校区，
类型：发明
国别省市：32[中国|江苏]