In this design, it is use a PT100 platinum resistance as temperature sensor, in order to acquisition the temperature signal, it use of constant-current temperature measurement method and use single-chip control, Amplifier, A / D converter. It can still improve the perform used two-wire ...
In this design, it is use a PT100 platinum resistance as temperature sensor, in order to acquisition the temperature signal, it use of constant-current temperature measurement method and use single-chip control, Amplifier, A / D converter. It can still improve the perform used two-wire ...
面向Pt100铂电阻的高精度多路测温系统
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to acquisition the temperature signal it use of constant-current temperature measurement method and use single-chip control Amplifier A D converter In addition it designs a clock circuit modules to achieve real-time measurement of temperatureIt can still improve the perform used two-wire temperature ...
Key words:Constant current source, high precision, digital display, analog-to-digital converter IV 1、绪论 1.1论文背景与目的 当企业在生产工业产品时,控制温度可以说是至关重要的一项指标。温度需要控制 的非常准确,不然生产时的质量就会受到影响。不仅如此,效率也与其密切相关。企业 需要尤其重视这一方面,关系...
Secondly,the PT100 is connected to the constant current source circuit, and the differential amplifier circuit is used to amplify the temperature voltage signal on the PT100. Thirdly,high performance analog to digital converter ADS1110 is used for AD conversion.Finally,the accurate temperature ...
the two voltages are connected to the positive and negative inputs of the AD7793, AD7793 chip used to capture and read its differential analog input of the positive and negative ends voltage converter module between the voltage value is converted to a temperature value and sent to the display...
A/Dconverter.Itcanstillimprovetheperformusedtwo-wiretemperaturecircuitandreducethemeasurementeror.Thetemperatureprecisionisreached±0.1℃between0℃~ThesystemcontainsSCM(STC89C52),analogtodigitalconvertdepartment(TLC2543),AD620amplifier,PT100platinum,LCD12864,writethecorrespondingsoftwareprogramtoachievereal-time...