大坝测压管水位监测系统设计

Design of Monitoring System on Water Level in the Dam’s Piezometric Tube

结合单片机技术和数字化监测技术,提出了采用数字化监测技术,将水位直接转换为脉冲数字信号,根据单片机脉冲的数量计算测压管水位的大坝测压管水位监测系统。该系统采用单片机作为管口分机的主控元器件,使系统的自动化程度、可靠性大大提高。采用以软件代替硬件的办法,使线路大大简化,造价较其他类型监测仪器低。采用水位-数字脉冲转换器,直接将测压管水位转换为数字脉冲信号,增强了系统的抗干扰能力,提高了监测精度。

The water level change of piezometric tube in the reservoir dam can reflect its internal structure.Combining the chip technology and digital monitoring technology,this paper put forward the monitoring system on water level in the dam’s piezometric tube by using digital monitoring technology to converting the water level into pulse digital signal directly,and calculated the water level of piezometric tube according to the number of single pulse in the SCM（single-chip microcomputer）.The program improves the degree of automation and reliability for the system greatly by using a microcontroller as the main components of the nozzle extension,makes the system cheaper than other types of monitoring instruments by using software instead of hardware to simplify the line,strengthens anti jamming capability and improves the monitoring accuracy for the system by using water level digital pulse converter to convert the piezometric level into pulse signal directly.