关键词: 温度采集, 蓄热性能, 传感器阵列, 并行采集

Abstract: [Objective] In order to provide a theoretical and practical foundation for the detection of wood floor heat storage performance,a real-time parallel acquisition method for temperature field of wood floor heat storage performance is proposed in this study.[Method] A heat-insulated confined space of the vacuum interlayer is constructed, and a push port is opened at the edge of the confined space, and sealed by a wedge-shaped door. The sample to be tested is placed in the middle of the insulated space, and 75 sensors are installed in the space above and below the test sample to form two sensor arrays. Each sensor in the sensor array group is connected to the controller I/O port by a single bus, and each I/O port is connected to the three micro sensors in a single bus manner. The upper and lower parts of the test space use 25 I/O ports, which are controlled by two controllers. The controller sends the matching and conversion commands simultaneously and collects the converted temperature values. When the measured sample with a certain temperature is pushed into the adiabatic confined space with a certain initial temperature, the sensor array group records the change of the temperature field in the confined space in real time and stores it in the real-time database.[Result] The data acquisition time of 150 temperature sensors is 2.4 s, and the temperature acquisition accuracy is ±0.1℃, which can meet the data needs of the detection for heat storage performance of wood floor.[Conclusion] The data acquisition system designed in this paper is able to collect data in real time during the test process, providing the precondition for data acquisition and analysis of the equipment, and ensuring the reliability of the test result of the whole detection device.

Key words: temperature acquisition, heat storage performance, sensor array, parallel acquisition