Ultrasonic Fuel Measuring Instrument For Research

Level measurement instrument is widely used in the fields of oil industry and chemical industry. It is a direction of development of modern industry and commerce to realize no contact measurement and intelligent management. It is an accurate and economic way to use ultrasonic to measure liquid level, material level and thickness and topography under water.This theme deals with measuring oil in the oil tank at the gas station. In this theme, there is further discussion about the feasibility and advantage of using ultrasonic as the signal source to measure distance. This oil measurement ultrasonic instrument takes the smallest system of the chip computer AT89C52 as the core and takes the theory of ultrasonic measurement as the basis .It uses ultrasonic to measure the oil automatically and also deals with data in order to decrease artificial interfere and provides a person-computer screen with a show and a keyboard, which is convenient for the operators carrying out the measurement control. The operators can print and keep some data using micro-printers or communicating with PC in order to manage the store of oil amount very well.On the base of a determined general plan, by using computer and electronic technology and the theory of ultrasonic measurement, we have designed and made the part of hard ware of the oil measurementultrasonic instrument and write some software process and make debugging and do some running-in experiments. During designing hardware circuit, we have used the supreme limitation to raise driving-ability and raise the distance of measurement to returning ware by taking some measurements just like multi-polar enlarging, according to the ultrasonic characteristic of index attenuation when it's spreading because we need to measure longer distance (from several meters to dozens of meters). During the process of making software, we apply the thought of process design of mould plate and mainly divide software into types just like the ultrasonic driving and data disposal mould plate and the functional mould plate. Each mould is made up of several small mould plates. Dealing with the software like that not only makes the structure of the software clearer, but also is good for adjustments and amendments of the software. Because this design demands more accurate calculation, this process C51 is used in it. And we use floating calculation to improve calculation precision. Besides, anti-disruption measure is used in both hardware and software in order to check the reliability and stability of oil measurement ultrasonic instrument.By using this oil measurement ultrasonic instrument that is made according to computer skills and the theory of level measurement, although it has low cost and is easy to operate, its function is powerful. Compared with the traditional measurement, it has some advantages suchas faster speeds, more accuracy and good reliability and has wide application, bright future and great value.