Equipment for carrying out whole-system wide low-temperature comprehensive calibration on temperature measurement system
A temperature measurement, system-wide technology, used in thermometer testing/calibration, thermometers, measuring devices, etc., can solve problems such as inability to calibrate the entire measurement system, and achieve the effect of outstanding substantive characteristics and significant progress
Active Publication Date: 2021-06-29
中国空气动力研究与发展中心设备设计与测试技术研究所
View PDF11 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The purpose of the present invention is to provide a device for comprehensively calibrating the temperature measurement system at a wide and low temperature for the entire system in view of the deficiencies in the prior art. This solution can calibrate the entire multi-channel temperature measurement system and solve the existing In the technology, only the temperature sensor can be calibrated and the entire measurement system cannot be calibrated. At the same time, this solution can calibrate the temperature sensor measurement system with a maximum of 45 measurement points at the same time, which can greatly improve the calibration efficiency.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0030] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0031] The present invention mainly consists of the following five parts: 1. Pre-cooling constant temperature tank; 2. Refrigerator water cooling system; 3. Thermal insulation calibration chamber system; 4. Vacuum and pressure regulating system; 5. Measurement and control cabinet.
[0032] The overall calibration device of the multi-channel low-temperature temperature measurement system adopts a comprehensive temperature control method of refr...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides equipment for carrying out whole-system wide low-temperature comprehensive calibration on a temperature measurement system, the calibration temperature range is 77K to 323K, a refrigerator refrigeration and heater heating comprehensive temperature control mode is adopted, a heat insulation calibration cavity adopts a three-layer structure, the middle layer and the outer layer are vacuum heat insulation, the inner layer is used as a calibration temperature source, a sensor mounting copper seat is placed, and rapid and uniform temperature field is realized through helium filling. In the calibration process, the temperature sensor with the cable penetrates through the sealing seat and then is arranged in the sensor mounting copper seat in the calibration cavity, then a wire is sealed, the middle outer layer is vacuumized for heat insulation, and the inner layer is filled with helium. After preparation, under the control of the measurement and control cabinet, temperature control of the refrigerator and the heater calibration cavity is automatically implemented according to a calibration process, and after a calibration target temperature value is reached, a temperature measurement system collects a current or voltage value of a calibration temperature point. After all calibration points are completed according to the process, performing calibration curve fitting to obtain a calibration curve within the measurement range of the temperature measurement system.
Description
technical field [0001] The invention relates to the field of temperature measurement system calibration, in particular to a device for comprehensively calibrating the temperature measurement system for the whole system at wide and low temperatures. Background technique [0002] In the temperature measurement process, the method of calibrating the temperature sensor is generally used to ensure the temperature measurement accuracy. However, in the actual temperature measurement process, measurement errors come from various links such as temperature sensors, measurement lines, amplifiers, and acquisition systems. Reaching 0.1K), it is difficult to meet the temperature measurement accuracy requirements only by calibrating the temperature sensor, and the entire temperature measurement system needs to be calibrated. [0003] In addition, in the actual temperature calibration system process, the temperature change process is relatively slow. In order to improve the test efficiency...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01K15/00
CPCG01K15/005
Inventor 褚卫华贾军伟顾正华刘展张文清柴昊杨兆欣李峥赵少美郎昊
Owner 中国空气动力研究与发展中心设备设计与测试技术研究所