The Development Of SW2000-A Kind Of Intellective Nilometer

Nilometer is widely used in the system of automatic detection and automation in many water supply such as oil industry, chemical industry, metallurgy industry, electric power, irrigation works, reservoir, bulk plant, pumping station, towns water and so on. And it is a important tool in these fields.This subject is finished according to the development of SW2000 that is a kind of intellective nilometer. According to the latest technology and developing aspect, SW2000 absorbed the soul of all kinds of water masuring tools at home and abroad. SW2000 is a type of supervisory device that can measure all kinds of waters. It has the character of high precision, high reliability, easy manipulation, visual display and so on. It can make local engineers monitor the water timely and use mitigation measure when accident happen timely, and it enhance the degree of automation in many bumping stations.The primary contents and achievements in this thesis are as follows:1. Measuring water by three different ways that are pressure sensor, resistance transducer, intellective rotary encoder.2. Using the high performance, high integration SOC(system on a chip) C8051F021 successfully that is made by SYGNAL.3. Using 16-bit ADC AD7705 that enhance the stability in this system successfully.4. Using LCD(Liquid Crystal Display) that can make reading in focus, display variegated, information content greater.5. Using current/ voltage conversion chip AD694 and devising the processing circuits.6. By the UART and RS232, devising the communication circuit with PC.7. By the way of oversampling, making the system stabler. And analyzing this way.8. By TIMER3 in C8051F021,devising a real time clock that reduce the cost.9. By VB(Visual Basic),devising the monitoring interface that can collect and enactment the parameters in SW2000.