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液位是工业生产监控过程中很重要的参数之一。为了使液位测量仪器智能化,可靠性和精确度都较以前有所提高,设计了电容式液位传感器测量系统。该设计中应用模拟电路、数字电路、单片机、FPGA及PC完成一个具有潜在价值的液位测量仪器。为了能适应现实需要,本设计还作了创新性尝试即远程控制系统自检和液位测量。PC的自检或液位测量命令传输到上位机,命令通过信号调理电路传输给下位机,控制下位机操作,从而完成远距离自检与测量。为了克服采用单片机测量液位外围电路复杂,执
Level is one of the most important parameters in industrial process monitoring. In order to make the level measuring instrument intelligent, reliability and accuracy are improved than before, the design of a capacitive level sensor measuring system. The design of the application of analog circuits, digital circuits, microcontrollers, FPGA and PC to complete a potential value of the liquid level measuring instruments. In order to meet the real needs, this design also made an innovative attempt to remote control system self-test and level measurement. The PC’s self-test or liquid level measurement command is transmitted to the host computer, and the command is transmitted to the lower computer through the signal conditioning circuit to control the lower computer to operate so as to complete long-distance self-test and measurement. In order to overcome the use of SCM to measure the level of peripheral circuit complexity, the Executive