High-precision temperature measuring method and device
A high-precision, temperature measurement technology, applied in the direction of measuring devices, thermometers, heat measurement, etc., can solve the problems of production quality, unstable temperature measurement, inaccurate temperature measurement technology, etc., achieve low power consumption, easy scale production and Maintenance, low cost effect
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Embodiment 1
[0038] This embodiment discloses as figure 2 The shown high-precision temperature measurement device includes a main controller, a memory, a temperature measurement module, a communication module and a power supply module.
[0039] In this embodiment, the main controller is responsible for the centralized control of other components, controls the temperature measurement module to collect and store the measured temperature data for the target temperature, and controls the communication module to upload the collected data to the host computer or remote server through a specific communication method.
[0040] The memory of this embodiment is used to store historical temperature measurement data and various working parameters and operation parameters of the measurement device. The power module of this implementation provides stable power supply for each part of the temperature measuring device.
[0041] The temperature measurement module in this embodiment includes a temperature...
Embodiment 2
[0048]In order to meet the requirements of high-precision temperature measurement in a wide temperature area, this embodiment adopts a temperature area segmentation and data fitting method. For a temperature measurement device in a wide temperature area, the physical characteristics of the temperature sensor are usually non-linear functions of temperature. And in different temperature sections, the linear characteristics presented are also inconsistent. For example, the commonly used thermistor sensor, its temperature resistance (R-T) characteristic curve is a nonlinear complex curve, such as figure 1 shown.
[0049] In this embodiment, for the convenience of description, the physical characteristics of the temperature change of the temperature measuring device are represented by F. The characteristic value can be the resistance, voltage, current, light intensity, infrared radiation energy, etc. of the temperature sensor.
[0050] For the requirement of high-precision temper...
Embodiment 3
[0058] At the specific implementation level, this embodiment refers to Figure 4 Provide a temperature zone segmentation and temperature change characteristic curve fitting process as follows:
[0059] In the range of the temperature measuring equipment (T 0 ~T m ), evenly extract N temperature sampling points at equal intervals, and read the temperature response characteristic value F of the temperature measuring device under the temperature environment corresponding to each temperature sampling point, and obtain N groups of F-T temperature response values of the temperature measuring device;
[0060] According to the measured N groups of F-T characteristic values, the characteristic curve is generated, and the temperature resistance F-T characteristic curve in the temperature measurement range is divided according to the following principles: the monotonic interval of the F-T characteristic curve and the linearity / non-linearity of the F-T characteristic curve;
[0061] A...
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