Knapp Anna, Bloom Arnold J
Department of Plant Sciences, University of California Davis, One Shields Avenue Davis California 95616 USA.
Appl Plant Sci. 2022 Jun 8;10(3):e11485. doi: 10.1002/aps3.11485. eCollection 2022 May-Jun.
High-precision data acquisition (DAQ) is essential for developing new methods in the plant sciences. Commercial high-resolution DAQ systems are cost prohibitive, whereas the less expensive systems that are currently available lack the resolution and precision required for many physiological measurements.
We developed the software libraries, called piadcs, and hardware design for a DAQ system based on an ultra-high-resolution analog-to-digital converter and a Raspberry Pi computer. We tested the system precision with and without a thermocouple attached and found the precision with the sensor to be better than ±0.01°C and the maximum possible system resolution to be 0.4 ppm.
The ultra-high-resolution DAQ system described here is inexpensive, flexible enough to be used with many different sensors, and can be built by researchers with rudimentary electronic and computer skills. This system is most applicable in the development of new measurement techniques and the improvement of existing methods.
高精度数据采集（DAQ）对于植物科学新方法的开发至关重要。商业高分辨率DAQ系统成本过高，而目前可用的较便宜系统缺乏许多生理测量所需的分辨率和精度。
我们开发了名为piadcs的软件库以及基于超高分辨率模数转换器和树莓派计算机的DAQ系统硬件设计。我们测试了连接和未连接热电偶时系统的精度，发现连接传感器时精度优于±0.01°C，系统最大可能分辨率为0.4 ppm。
本文所述的超高分辨率DAQ系统价格低廉，灵活性足以与许多不同传感器配合使用，具备基础电子和计算机技能的研究人员即可构建。该系统最适用于新测量技术的开发和现有方法的改进。
