Calibration method for measurement data of distributed multi-node liquid temperature and pressure sensors
A pressure sensor and temperature data technology, applied in the sensor field, can solve the problems of temperature drift, pressure offset, inaccurate data measurement, etc., and achieve the effect of solving pressure measurement error, simple structure and improving measurement accuracy
Active Publication Date: 2020-10-09
BEIJING HUAHANG RADIO MEASUREMENT & RES INST
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The platinum resistance temperature sensor will be affected by the parameters of the calculation model, resulting in low accuracy of the measured temperature. The ceramic pressure sensor will be affected by temperature and pressure at the same time, which will cause the measured pressure to shift and cause temperature drift; therefore, the actual temperature used Both the sensor and the pressure sensor need to be calibrated in the later stage to achieve the required measurement accuracy
[0004] In actual use, a series of sensors are generally installed at fixed intervals in the pipeline to measure the temperature and pressure of the liquid to understand the overall temperature and pressure of the pipeline. If only each sensor is calibrated individually, it will not be able to reflect the The impact of abnormal sensor data on the measurement data of sensors in the pipeline, resulting in inaccurate overall data measurement
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
[0047] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principles of the present invention.
[0048] The embodiment of the invention discloses a method for calibrating measurement data of distributed multi-node liquid temperature and pressure sensors.
[0049] In the calibration method of this embodiment, the temperature sensor set on each node is a platinum resistance temperature monitoring sensor, and the pressure sensor is a ceramic pressure monitoring sensor.
[0050] Such as figure 1 As shown, the calibration method in the embodiment includes the following steps:
[0051] Step S101, obtaining the calibrated temperature and pressure monitoring sensor data of n nodes;
[0052] In order to eliminate the problem that the temperature sensor a...
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 relates to a method for calibrating measured data of distributed multi-node liquid temperature and pressure sensors, and belongs to the technical field of sensors. The method comprises the following steps of: acquiring temperature and pressure monitoring sensor data of n nodes after calibration, carrying out validity judgment on the temperature and pressure monitoring sensor data ofeach node and compensating invalid data; and performing data smoothing on the compensated temperature and pressure data of the n nodes to obtain calibrated data. The method carries out validity judgment, data compensation and data smoothing on the calibrated measurement data of the temperature and pressure sensors distributed in a pipeline so as to integrally improve the integral precision of themonitoring data of the distributed temperature and pressure sensors in the pipeline.
Description
technical field [0001] The invention relates to the technical field of sensors, in particular to a method for calibrating measurement data of distributed multi-node liquid temperature and pressure sensors. Background technique [0002] The temperature and pressure inside the liquid are important physical quantities that reflect the state of the liquid medium itself. In various types of industrial pipelines, the temperature sensor and pressure sensor equipment located at each node position are traditionally used to monitor the state of the liquid medium conveyed in the pipeline. In terms of temperature measurement, platinum resistance temperature sensors (PRTDs for short) are commonly used as sensitive cores to penetrate into the liquid medium. According to the Callendar-Van Dusen formula, the real-time resistance of the platinum resistor is directly related to the liquid temperature; in terms of pressure measurement, the sensitive core can use a ceramic pressure sensor to c...
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 Patent Type & Authority Patents(China)
IPC IPC(8): G01L27/00G01K15/00
CPCG01K15/00G01L27/00
Inventor 云峰李舒悦赵川许振丰
Owner BEIJING HUAHANG RADIO MEASUREMENT & RES INST