Study On The Technology Of Wireless Measure And Control In The Sulfur Dioxide Autoanalyzer Based On Ultraviolet Fluorescence For The Atmosphere Pollution Source

Air quality is related to the earth's ecosystem, human health event. On air quality monitoring from a technological perspective is a difficult detection technology, air quality monitoring equipment developed with academic and economic and practical significance. By currently researches, we found that most of monitoring systems used in big and medium sized cities have imported for a long time, these systems not only expensive, but also the fare on maintenance is greatness. By the great support from Guangzhou Environment Protection Administration, Prof. Yang Guanling, and Prof.He Zhenjiang from Physic and telecommunication engineering school, South China Normal University, lead the project group to develop a project named "Domestic Research and Production of Atmosphere Automonitoring System". "Concentration Detection System of Sulfur Dioxide in the Atmosphere Pollution Source", is a part of the project.After compareing with other methods of detecting SO₂, Ultraviolet Fluorescence is introduced, the instruction, function realizing and the focus of this paper -- System of Wireless Monitoring and control technology research is expatiated.With the development of network technology, The apparatus functions of the network and the equipment's technology of monitoring and control in wireless is increasingly of concern, But after research,we found that the environmental monitoring equipment on wireless monitoring and control function is the first attempt, there is a very good prospect.Our apparatus' wireless monitoring and controlling system network is based on the short message service (SMS) and genaral package radio service (GPRS) of the mobile phone network. In this regard,we have made specialized hardware and software design for our Sulfur Dioxide Autoanalyzer Based on Ultraviolet Fluorescence for the Atmosphere Pollution Source. Among the main research work and the results are as follows:1. We collect the information of the current domestic and international wireless monitoring and control system of the project. We as well as have compared and discussed the advantages and disadvantages of the various programs. We aimmed at our sulfur dioxide autoanalyzer based on ultraviolet fluorescence for the atmosphere pollution source only need to be transferred the hour average data and the daily average data in a fixed interval time with a small volume of data transmission characteristics. We have chose the network based on mobile phone with short message service (SMS) and general packet radio service (GPRS) to transmit remote data project.2. For the various modules of Wireless monitoring and control system, we have designed and chose the specific components. This part is the base of the wireless monitoring and control system research. My thesis have completed the the main control module design, the MCU chip and serial port data conversion selection and design, the choices of wireless transmission module chip, the design of TCP/IP protocol conversion module, and the various modules' circuit connection design and so on.3. The software design of our wireless monitoring and control System. This Part the software design is the core of the wireless monitoring control system design. My thesis have completed such works: the tailor, transplantation and design of the embedded realtime operating system (RTOS), the tailor, transplantation and design of theTCP/IP protocol tack, the embedded programme of AT command, and the most important part - the design of system task programme. System task programme include "data acquisition" tasks and "data transmission "two parts. Our design achieved a system on chip (SOC) function, and can be carried out by the most common 51 Series MCU. After debugging and simulation, our software design can achieve the data acquisition and data transmission functions.4. By combining our prototype equipment, a modular system for data transmission link experimental study achieved using GPRS mobile phone network equipment for data transmission functions.