Few Points Real-time Highly Accuracy Temperature Sensor System

Sensors are sophisticated high-tech products. On top of all the sensor devices, temperature sensors have been widely used in the areas of agricultures, meteorology, environmental conservation, national defense, earthquake measurement, aerospace industry, etc. Traditional temperature measurement system restricts to complex peripheral equipments and zero reset. It is an inevitable trend that digital sensors are used to design all sorts of control systems. However, due to the demand of highly accuracy in temperature, the existing products are unable to meet the requirements.In order to achieve highly accuracy, real-time, dynamic processing features of temperature sensors, this paper proposes a whole new temperature measurement system framework, which can fill a vacancy in these instruments of china and improve our international competitiveness in the study of sensor instruments. This temperature transmission instrument exploits the methods of multipoint level connections and obtaining information instantaneously to output digital pulse signals after demarcated. This system has advantages of high- compatibility, friendly-interface, low-power-consuming, small-occupation and strong-extension, which effectively simplifies and improve the efficiency of this temperature measure and control system. This system has a bright prospect of application and development.Based on CPU hardware design, focusing on constructing the communication between the core and lower units and PC machines to realize this high accuracy, real-time and multipoint temperature measurements, this article deals with the software design and implement of the entire system and testify the validity and utility via data from both lab experiments and outdoor tests. It analyzes the keystone of GPS communication theoretically, realizes the communication between core units and PC machines, GPS and lower machines, and finally resolves the difficulty in I2C communication software interface design. All these are implemented and developed by C language. As a receiver, a PC machine not only sorts and saves data, but also displays real-time information. During this process, it breaks through the difficulty in saving and accessing data according to date and channel, it achieves the ability to save data and plot real-time diagrams, and the ability to swiftly update information when parameters are changed. Upper level machines are only related to software implement, which are realized via VB language. Low units are a few channels sensor nouns series connection. Every passage mainly implements its own data collection and modulus transfer. The major difficulty is to deal data by passages when communicating core units. Our system adopts dialing number shifts which can allow or prohibit the communication between all passages and the core units. This part is realized via C language.