flow measurement transducer

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How to write the abstract in the paper about the multifunctional temperature display of 51 microcontroller? This topic mainly introduces the hardware circuit design and system software design of temperature sensors. The hardware circuit mainly includes a main controller, a temperature measurement circuit, and a display circuit. The controller uses a microcontroller AT89C51, the temperature sensor uses DS18B20 produced by DALLAS Semiconductor Company in the United States, and the display circuit uses a 4-digit common anode LED digital tube for dynamic scanning direct reading display. The system program mainly includes the main program, temperature reading subroutine, temperature conversion command subroutine, temperature calculation subroutine, display data refresh subroutine, etc. In addition, the debugging and performance analysis of the system were also introduced. Due to the use of an improved intelligent temperature sensor DS18B20 as the detection element, compared with conventional thermometers, this digital thermometer reduces external hardware circuits and has the characteristics of low cost and ease of use. The DS18B20 thermometer can also be applied and developed in areas such as over limit alarm and remote multi-point temperature control, with great development prospects. DS18B20 is a high-precision digital temperature sensor that can be networked. Due to its unique advantage of a single bus, it allows users to easily build sensor networks and makes multi-point temperature measurement circuits simple and reliable. This article introduces the hardware connection and software programming of DS18B20 digital temperature sensor under single-chip microcomputer, and provides a software flowchart. In this paper, we learned a lot of useful things through the design of microcontrollers and temperature sensors. Among them, we understood how to design a product, first of all, it must have cost-effectiveness and good adaptability. Secondly, we need to know the key to design. Finally, we also understood the connection between design and practice. Keywords: microcontroller system; Digital temperature sensor; Single bus; Over limit alarm This thesis mainly include hardware circuit design and system design process. Hardware circuit include the main controller, temperature measurement circuit and display circuit, the controller using SCM AT89C51, temperature sensors using the production DS18B20 of United States DALLAS Semiconductor, and the display circuit using four common anode of LED by digital dynamic scanning and Direct Reading show. The system procedure mainly includes main procedure, reading temperature sub-procedure, the temperature conversion orderanies sub-procedure, computing the temperature sub- procedure, the manifestation data breaks sub-procedure etc. In addition, it introduced a system debugging and performance analysis.　　In order to adopting the improvement type the intelligence temperature transducer DS18 B20 Be examine component, compared with the traditional thermometer, this numerical thermometer reduced the hardware telephone of the exterior, have low cost with the characteristics of the easy usage. The DS18 B20 thermometers can report to the police still in the heat, long-distance leave to click to measure control much etc. carry on an applied development, having good development foreground. As a kind of high-accuracy digital net temperature sensor， DS18 B20 can be used building a sensor net easily. It can also make

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