Intelligent temperature measurement method and related device for coal field fire extinguishing advanced exploration drill hole

By employing a dual thermocouple collaborative measurement architecture and dynamic thermal response compensation technology, the problems of low measurement reliability and efficiency in borehole temperature measurement in coalfield fire areas have been solved. Real-time verification and rapid and stable temperature readings have been achieved, improving the efficiency and positioning accuracy of fire area exploration.

CN121875709APending Publication Date: 2026-04-17青海煤炭地质一0五勘探队 +1
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Patent Information

Application Number
CN202511985337.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-26
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Existing methods for measuring temperature in boreholes in coalfield fire zones suffer from insufficient measurement reliability and excessively long measurement waiting times. Especially in deep borehole multi-point measurement scenarios, single thermocouples are prone to drift or failure, and sensor thermal inertia leads to poor reading stability, affecting the accuracy of fire source location and operational efficiency.

Method used

Employing a dual thermocouple collaborative measurement architecture, the system achieves real-time verification and rapid, stable temperature readings through synchronous acquisition of dual-channel signals, adaptive fusion processing, and dynamic thermal response compensation. This includes techniques such as cold junction temperature compensation, anti-interference filtering, adaptive fusion, and dynamic thermal response compensation to ensure measurement reliability and reduce waiting time.

Benefits of technology

It enables real-time cross-verification of temperature data in high-temperature and complex environments, avoids the failure of a single sensor, significantly improves the reliability of temperature measurement results and the operational efficiency of deep hole multi-point measurement, and provides more accurate fire zone location and fire extinguishing scheme optimization support.

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Abstract

The invention discloses an intelligent temperature measuring method for coal field fire extinguishing advanced detection drilling, an intelligent temperature measuring device for coal field fire extinguishing advanced detection drilling, intelligent temperature measuring equipment and a computer readable storage medium. Two independent temperature sensors are integrated at the end of the probe to synchronously collect temperature information in a drill hole. In the measurement process, the system carries out real-time comparative analysis on data of the two sensors, judges the working states of the sensors according to the deviation degree of the two sensors, executes self-adaptive weighted fusion output when the deviation is in a normal range, and automatically identifies an abnormal sensor and switches to a single-sensor reliable mode when the deviation exceeds a threshold value. In addition, the system establishes a dynamic thermal response compensation model according to thermal inertia parameters of the sensor, corrects a transient measurement value in the moving process of the probe in real time, and outputs a compensated steady-state equivalent temperature. According to the invention, the problems of insufficient temperature measurement reliability and thermal response lag of a traditional single sensor are effectively solved.
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