Abstract: The temperature is the people lives one kind of most basic environment parameter, the temperature survey system's development is the social urgent need. The intelligence temperature survey installment widely will apply in the industry scene, the agricultural production and our living conditions. At present the commonly used temperature survey system mostly has two big shortcomings: First, needs the massive segments to be able to deliver the scene sensor's signal in the gathering card, the wiring construction is troublesome, the cost is also high; Second, what on the line transmits is the simulated signal, is disturbed easily and the loss, to overcome these shortcomings, one kind arises at the historic moment based on the digitization single bussing technique's system. The research and the development temperature survey installment already may serve for the lives of the people, also satisfies the industrial production the request. This design goal, on the one hand is the industry modernization objective need, on the other hand, also regarding the university student who soon must march into the society is a beneficial attempt. This design mainly uses single main line digit temperature sensor DS18B20 is surveys the component, take the DM-162 liquid crystal display module as the display device, 89C2051 the microprocessor is the control core, constituted the temperature real-time measurement installment. key word: Monolithic integrated circuit temperature sensor liquid crystal display module DS18B20 DM-162
