The Design Of Liquid Level Measuring System And Displacement Transducer In Crude Oil Tank

This dissertation accomplished the design and installment and on-the-spot modulation of the crude oil tank's liquid level measuring system. It have narrated the domestic and international present situation of liquid position measuring installment . And it have put forward using the change of dielectric contant in the interface medium to survey the altitude between upper oil interface and lower ones.Moreover this installment can show the oil quantity and moisture content curve in tank.Along with the development and maturity of In-System Programming technology, it is possible to conduct the integrating designation with the ISP logic devices. This article briefly introduces the most popular system design technology:VHDL and ISP logic devices, and design a kind of high integrated grating digital readout devices on the basisi of Moire fringe divisiontheory.Hardware and software were associated in this scheme. Hardware has the advantage of modular and multi-using . The form of hardware,main program and sub-program of software, simulation of circuit were presentedin this test.