电容传感电路在洗手间自动控制系统方面的应用

Application of capacitance sensor circuit in toilet automatic control system

为了实现对办公楼洗手间的智能化控制、记录检修以及预警,设计了一种基于555定时器多谐振荡电路的电容电阻检测处理系统,将使用洗手间时产生的各种模拟信号的变化转化为电阻与电容值的变化。主控芯片为FPGA,设计相应的测量电路,将所需的模拟信号转换为数字量,再通过主控芯片进行数据的采集与分析,驱动系统完成相应的控制操作。同时,加入了上位机与下位机配合控制的方法,后台上位机完成系统与监管人员的人机交互、对下位机的统筹监管和后台数据记录。最终实现对洗手间进行智能化控制,并对出现的问题进行检修和预警。

In order to realize the intelligent control of the office building toilets,record maintenance,and early warning,we design a more harmonic oscillation circuit based on 555 timer capacitance resistance detection processing system,will use the bathroom when the change of various analog signal into the change of the resistance and capacitance value,main control chip of FPGA,design the corresponding measurement circuit,converts the analog signal to digital signal,again through the main control chip for data collection and analysis,the drive system to complete the corresponding control operation.At the same time,the upper computer and the lower computer are added to cooperate with the control method,and the upper computer in the background completes human-computer interaction between the system and supervisors,overall supervision of the lower computer and background data recording.Finally,the toilet is intelligently controlled,and the problems are repaired and early warned.