The Design Of Outdoor Temperature And Humidity Monitoring By Using Short-range Wireless Network Technology

This is an outdoor temperature and humidity monitoring design by using short-range wireless network technology. For the difficulties of cabling in the outdoor temperature and humidity monitoring system, especially in complicated topographical features, such as mountain, forest and mountain area, this topic proposes an outdoor temperature and humidity monitoring scheme. In the scheme, the short-range wireless network technology is the priority, and the remote wireless communication technology is the complementary. According to the plan, an outdoor temperature and humidity monitoring system is designed. Taking the short distance wireless network, the system collects temperature and humidity data of all test points in the area, and then monitors the centralized data. There are two kinds of monitoring ways, one kind is to use the test equipment to monitor, and another kind is to use the computer for remote monitoring. Between the two ways, the remote monitoring takes GPRS technology, and GPRS communication is achieved by SIM900 A module. The design of the outdoor temperature and humidity monitoring system consists of three separate devices, including temperature and humidity data acquisition terminal, coordinator, and computer. Among them, the temperature and humidity acquisition terminal is system acquisition equipment, the data coordinator is the control system and field monitoring equipment, and the computer is a system of remote monitoring equipment.This paper mainly adopts the following several ways:(1) To reduce the external interference and errors existing in the ADC process, temperature and humidity acquisition terminal takes composite filter algorithm as the main filtering algorithms;(2) Considered the performance requirements, the power consumption and the cost of the short-range wireless networks, this subject adopts the low power radio frequency communication technology as the system of short-range wireless network technology scheme;(3) According to the analysis of the plane routing algorithms and hierarchical routing algorithm, and combined with the characteristics of system short-range wireless networks, this subject adopts the hierarchical routing algorithm as a system of wireless routing algorithm;(4) Considered the performance requirements, the power consumption and the cost of the remote wireless communication, this subject adopts the GPRS communication technology as a system of remote wireless communication technology.This research work mainly has the following several aspects: first, through consulting a large number of related literature, analyzing the current situation of the development of temperature and humidity monitoring system, and focusing on the short distance and long-distance wireless transmission test, this paper forms the main body of the outdoor temperature and humidity monitoring scheme design. Second, based on the study of short-range wireless network technology, remote wireless communication technology, ARM technology, and micro-controller technology, the related module of the hardware circuit is debugged, according to the results of the tests, the temperature and humidity data acquisition terminal and the coordinator are designed. Third, on the design of software of lower computer, based on the system hardware configuration, the module for process of writing and debugging work are made, after the successful debugging, the writing and debugging of the main program are completed finally in the temperature and humidity data acquisition terminal and the coordinator of the software design, in which temperature and humidity acquisition terminal application uses C language in the IAR EW430 software platform development, and data coordinator of the program is written in C language in RVMDK3.8 A software platform development. Fourth, the monitoring of the client software design and system are debugged, the monitoring client is designed by Visual Basic 6.0 software development tools, in the writing of monitoring of the client software, network communication function is made through configuration Winsock implementation; Finally debugging platform system is build by system, the platform includes the temperature and humidity data acquisition terminal, coordinator, monitoring computer, through the debugging results the platform achieves the expected design goal, proving the feasibility of the scheme. The end of paper is the conclusion part, after the preparation, system design, system debugging, analysis and summary of the defects in the system, the main improvement direction is:(1) Perfect the monitoring function of client software, achieve intelligent analysis data, and record the test point of temperature and humidity data into professional database;(2) Design the mobile client software, which users can use the devices such as mobile phone, Pad data real-time observation of each test point temperature and humidity, increase monitoring means, convenient testers monitoring;(3) Improve the system anti-interference ability;(4) To expanding the scope of the network, making the multiple data coordinator between a wireless network, expand the scope of monitoring.The significance of this paper basically has the following several aspects:(1) Aim at the cable temperature and humidity monitoring system in the mountain, the jungle, mountains and other difficulties in the wiring of outdoor space, this paper put s forward the outdoor temperature and humidity monitoring scheme of short-range wireless network technology. On the basis of the scheme, this paper designs a temperature and humidity monitoring system. Through the system debugging, achieves the expected target. To a certain extent, the short-range wireless network technology in the outdoor temperature and humidity monitoring system on the feasibility of the application are verified.(2) Through building a short-range wireless network, this scheme makes the temperature and humidity monitoring system can be applied to outdoor large number of test points within a certain area of test requirements.(3) By adding remote monitoring method, the temperature and humidity monitoring system can be applied to outdoor needs long-term monitoring, convenient the testing of personnel monitoring, and improving the test efficiency.