Temperature measurement and control system
A measurement and control system, temperature information technology, applied in thermometers, thermometer parts, measuring devices, etc., can solve the problems of complex structure, cumbersome debugging, poor detection system accuracy, etc., to achieve strong anti-interference ability, simple structure, increased use effect of life
Inactive Publication Date: 2014-12-17
郑忠文
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Problems solved by technology
A / D conversion is required on the interface, so the structure is complex and debugging is cumbersome
Moreover, the reliability of the thermistor is relatively poor, the accuracy of measuring temperature is low, and the accuracy of the detection system is poor
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[0014] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0015] The present invention provides a kind of temperature measurement and control system aiming at existing deficiencies, such as figure 1 As shown, it includes a power supply voltage stabilization circuit that provides voltage for the system, and also includes a temperature acquisition module for detecting temperature and a main control module that receives temperature information collected by the temperature acquisition module, wherein the temperature acquisition module is a DS18B20 temperature sensor, Its temperature detection range is -55°C to +125°C, and the main control module is AT89S52 8-bit microcontroller. The DS18B20 temperature sensor has an accuracy of ±1°C, uses the AT89S52 chip as the core device, and uses flash ROM for all ROMs in the c...
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The invention relates to the technical field of temperature measurement, in particular to a temperature measurement and control system. The system comprises a power supply voltage-stabilizing circuit, a temperature acquisition module and a master control module. The power supply voltage-stabilizing circuit provides voltage for the system. The temperature acquisition module is used for detecting temperature. The master control module receives temperature information acquired by the temperature acquisition module. The temperature acquisition module is a DS18B20 temperature sensor, and temperature detection range is -55 DEG C to +125 DEG C. the master control module is an AT89S52 8-bit single-chip microcomputer. The temperature measurement and control system composed of digital temperature sensors is simple in structure, high in anti-jamming capability, stable and reliable, and is suitable for temperature measurement in situ under a severe environment, and what's more, buzzers and buzzer driving circuits are added, so service life of the temperature sensors is prolonged.
Description
technical field [0001] The invention relates to the technical field of temperature detection, in particular to a temperature measurement and control system. Background technique [0002] Since the beginning of the 17th century, people have used temperature to measure. With the support of semiconductor technology, semiconductor thermocouple sensors, PN junction temperature sensors and integrated temperature sensors have been developed successively in this century. Correspondingly, according to the law of interaction between waves and matter, acoustic temperature sensors, infrared sensors and microwave sensors have been developed successively. [0003] The thermocouple sensor has its own advantages and disadvantages. It has low sensitivity, is easily affected by environmental interference signals, and is also easily affected by the temperature drift of the preamplifier, so it is not suitable for measuring small temperature changes. Since the sensitivity of the thermocouple t...
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IPC IPC(8): G01K1/02
Inventor 郑忠文
Owner 郑忠文