Device and method for non-invasive temperature measurement
By integrating an acceleration sensor to detect flow-induced vibrations, the device determines flow speed, enhancing the accuracy of noninvasive temperature measurements in pipelines, addressing measurement inaccuracies due to flow velocity, and ensuring reliable readings.
Patent Information
- Application Number
- DE102024200830
- Authority / Receiving Office
- DE · DE
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-07-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing noninvasive temperature measuring devices for pipelines suffer from measurement inaccuracies due to inadequate flow velocity of the medium, particularly in pipelines with small diameters and low heat capacity media, which are not adequately addressed by current technologies.
Incorporating an acceleration sensor to detect vibrations induced by the flowing medium, allowing the evaluation device to determine the flow speed and adjust the temperature measurement accuracy by comparing it against a confidence range or threshold values, and optionally using two temperature sensors to enhance precision.
The solution provides reliable and accurate temperature measurements by accounting for flow speed, minimizing measurement errors, and providing warnings for unreliable readings, thus ensuring high precision and safety in noninvasive temperature monitoring.
Smart Images
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Abstract
Claims
[1] Temperature measuring device (2) for non-invasively measuring a temperature of a medium flowing through a pipeline (3), comprising at least one first temperature sensor (6a) which is designed to detect the temperature of the medium (M) flowing through the pipeline (3), characterized by , that the temperature measuring device (2) comprises an acceleration sensor (9) which is designed to detect a vibration induced by the flowing medium (M), and that the temperature measuring device (2) comprises an evaluation device (10) which is designed to determine a flow velocity of the flowing medium (M) on the basis of the detected oscillation of the flowing medium (M). [2] Temperature measuring device (2) according to claim 1, which additionally comprises a second temperature sensor (6b) which, together with the first temperature sensor (6a), is designed to detect the temperature of the medium (M) flowing through the pipeline (3). [3] Temperature measuring device (2) according to claim 1 or 2, wherein the evaluation device (10) is designed to determine a standard deviation of a vibration signal of the detected vibration and to determine the flow velocity of the medium (M) flowing through the pipeline (3) on the basis of the standard deviation of the vibration signal. [4] Temperature measuring device (2) according to claim 3, wherein the evaluation device (10) is designed to take into account a wall thickness and a diameter (D) of the pipeline (3) when determining the flow velocity of the medium (M) flowing through the pipeline (3). [5] Temperature measuring device (2) according to claim 1 or 2, wherein the evaluation device (10) is designed to determine a flow velocity of the medium (M) flowing through the pipeline (3) by machine learning from the detected vibration. [6] Temperature measuring device (2) according to one of the preceding claims, which is designed to be attached to the pipeline (3). [7] Temperature measuring device (2) according to claim 6, which can be fastened to the pipeline (3) by a clamping or adhesive method. [8] Temperature measuring device (2) according to one of the preceding claims, which is designed and intended to be arranged such that the first temperature sensor (6a) and the optionally present second temperature sensor (6b) extend in the radial direction to the pipeline (3). [9] System comprising a temperature measuring device (2) according to one of the preceding claims and a pipeline (3) through which a medium (M) flows. [10] Method for non-invasively measuring a temperature of a medium flowing through a pipeline (3) by means of a temperature measuring device (2) comprising at least a first temperature sensor (6a), an acceleration sensor (9) and an evaluation device (10), the method comprising: a) detecting the temperature of the medium (M) flowing through the pipeline (3) by the first temperature sensor (6a), b) detecting a vibration induced by the flowing medium (M) by the acceleration sensor (9), c) Determining a flow velocity of the flowing medium (M) on the basis of the detected vibration by the evaluation device (10). [11] Method according to claim 10, wherein the temperature of the medium (M) flowing through the pipeline (3) is determined by the first temperature sensor (6a) and a second temperature sensor (6b). [12] Method according to claim 10 or 11, wherein the determined flow velocity is compared with a confidence interval in order to determine an uncertainty of the temperature detection carried out. [13] Method according to claim 11 or 12, in which the determined flow velocity is compared with one or more threshold values, and in which a warning message is issued if the flow velocity is below or above the threshold values. [14] Computer program product for simulating an operating behavior of a temperature measuring device (2) according to one of claims 1 to 9, or for producing a temperature measuring device (2) according to one of claims 1 to 9.
Citation Information
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