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Design and implementation of a low-cost multi-channel temperature measurement system for photovoltaic modules

机译：低成本的光伏模块多通道温度测量系统的设计与实现

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An efficient and low-cost temperature logging system with a 16-channel input was developed for measurements of photovoltaic module temperature. This paper reports the principle of operation, design aspects, as well as the experimentation and performance of the simultaneous temperature measurement of 16 solar cells/modules. The system consists of a 16 channel multiplexer, a 12 bit A/D, a differential amplifier and NTC temperature sensors. The temperature range of the sensor is from -20 deg C to 120 deg C. The simplistic design requires no large internal memory to store data but incorporates a high degree of sensitivity and dynamic range (according to climate condition), thus the cost of the design remains low and makes it suitable for field applications. The system was successfully tested for the operating temperature of a 40-cell mono crystalline Si photovoltaic module under realistic outdoor conditions during a summer and a winter day. The temperature Instrumentation developed for avoidance of special interface card use enabled the successful collection of data from long distances with negligible level of noise.
机译：开发了一种具有16通道输入的高效低成本温度记录系统，用于测量光伏模块温度。本文报告了16个太阳能电池/模块同时进行温度测量的工作原理，设计方面以及实验和性能。该系统由一个16通道多路复用器，一个12位A / D，一个差分放大器和NTC温度传感器组成。传感器的温度范围是-20摄氏度到120摄氏度。这种简单的设计不需要大的内部存储器来存储数据，而是结合了高度的灵敏度和动态范围（根据气候条件），因此成本较高。设计保持较低的水平，使其适合现场应用。该系统已在夏季和冬季的实际室外条件下成功测试了40单元单晶硅光伏组件的工作温度。为避免使用特殊的接口卡而开发的温度仪表能够成功地从远距离成功收集数据，而噪声水平却可以忽略不计。

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