Cable type positioning water leakage detection device and method

Abstract

The invention relates to a water leakage detection device, in particular to a cable type positioning water leakage detection device and method. The device comprises a water leakage induction cable anda water leakage host controller. The water leakage induction cable uses a four-core belt positioning water leakage detection line, the water leakage host controller detects loop resistance formed bythe four-core cable, whether water leakage occurs or not and a water leakage positioning point are determined according to the change of the loop resistance, and water leakage alarm information is sent out. The water leakage host controller comprises a central control part, a broken line detection part, a positioning detection part, a signal amplification part and a power supply conversion part. The measured physical quantity is a variable quantity and has no fixed and accurate value, so that the fuzzy logic method is used for judging water leakage; Wire breakage detection is set, so that unnecessary loss caused by wire breakage of a detection wire is avoided; during water leakage detection and positioning, a hardware positive and negative voltage mode is adopted to enable the two ends ofthe detection line to generate positive and negative alternating voltage so as to reduce the polarization phenomenon.

Description

technical field [0001] The invention relates to a water leakage detection device, in particular to a cable type positioning water leakage detection device and method. Background technique [0002] Water leaks can happen in any building and when they do, they can cause significant damage. For example, if any leakage in important places such as data room, power distribution room, archive room, warehouse, etc. cannot be discovered and eliminated in time, it may cause equipment damage, important data loss and other unpredictable serious consequences, so water leakage detection has gradually become a necessity. indispensable part. [0003] At this stage, the water leakage detection sensor is mostly used in multi-core cables. The controller detects the loop resistance composed of multi-core cables, and determines whether there is water leakage and the location of the leak point through the change of loop resistance, and gives an alarm message. However, applying voltage in the sa...

AI Technical Summary

Problems solved by technology

However, applying voltage in the same direction at both ends of the sensing cable for a long time will cause polarization, which seriously affects the accuracy and reliability of the detection; and most of the water leakage detection devices are not equipped with disconnection detection. If the sensing cable itself breaks, the water leakage detection will fail. , could have serious consequences

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