| Water level measurement and displayed in the industrial and agricultural production has extensive application, along with the development of science and technology, emerged in a lot of new technology and new products. In this paper the water level measurement and display system development status and related techniques are studied, based on wireless sensor network design of the wastewater treatment plant water measurement and display system. This system incorporates the sensor technology, wireless communication technology and single chip microcomputer, is based on the application of wireless sensor networks system design model. By the end of the whole system is composed of sensor and MCU sensor child nodes unit module, responsible for control of sensor, acquisition sensors, then brought to an analog by single chip microcomputer control AD converter for do processing, the electrical signals converts water-level signals; Then through wireless communication module sent to intermediate nodes unit module, among units in charge of the whole wireless network module end child nodes unit data acquisition; The data collected according to the design good data format packaging, to PC display, or directly through the other display terminals to display real-time water conditions.According to the function of this system can be roughly divided into measurement part and display section. Measurement part adopts the relatively mature technology, using static pressure level sensor to collect data, after current electric water after pressed change for AD transform device for processing. After AD transform out data, then sent to STC, will convert MCU signal into water depth information. Display section was designed using wireless sensor network technology, using scene shows, wireless LED screen shows and PC shows three ways. Scene shows in the acquisition of the sensor is water in a child node unit directly is displayed on LCD and the water level of the child nodes module information; Wireless LED screen shows is designed a large LED screen with a wireless receiver function, itself, receive from the information, then among nodes on the big screen display, this kind of means, intuitive, and data to PC. PC can directly display data, also can real-time data to these water preservation. |