The Hardware Design Of Batch Testing And Separating System For Pt-Resistance Temperature Sensor

Temperature is a physics quantity that is often encountered in our daily life, and it is also one of physical parameters that the humanity carries on testing and researching in the early years. Temperature is one of the most common and important operating parameters during industrial process. With the development and progress of society, the temperature measurement becomes more and more important and the scope of application of temperature sensors expands rapidly.The temperature measurement is required in industry, agriculture, transportation, disaster preparedness, health care, space and ocean development, as well as household appliances. But low efficiency of measurement has been a main factor which affects the quality of the products at all times. So, how to solve the problem of automatic batch detection and the issues of separation becomes the critical factor that affects the improvement of productivity. In order to examine the performance parameters of the temperature sensor faster and more accurately in batch, it is imminent to research and develop a practical, efficient and intelligent testing system.The Pt-resistance temperature sensor is regarded as the research object in this thesis. The Pt-resistance temperature sensor testing system has the functions of multi-channel selecting, pointing testing, data transmission and etc. In the system the main control element is MSP430. The following tasks are carried out in this research:1.In this testing system, 100-channel signal conditioning modules are designed by using four-wire measurement methods, so as to enhance the accuracy of batch testing system.2.The constant current uses the automatic regulation and export third gear electric currents which is matched separately by different gain amplifier to meet the variety of Pt-resistance testing requirements.3.The test system is designed by a 16-bit MCU, and can implement the measurement of the performance parameters of Pt-resistance temperature sensor, as well as realize the task of display and communication and so on.The system can give whole testing information of temperature-sensors and resolve practical problems. It also provides a method and a system framework for drawing a similar testing system.