Cable type positioning water leakage detection device and method

A technology for positioning detection and detection device, which is applied in the application of electrical devices to test fluid tightness, continuity testing, etc., can solve the problems of water leakage detection failure, affecting the accuracy and reliability of detection, polarization, etc. effect of loss

CN112414647AActive Publication Date: 2021-02-26HANGZHOU DIANZI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2021-02-26

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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.
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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...

Examples

Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and examples.

[0023] figure 1 It is a schematic diagram of the detection principle of the water leakage detection induction cable. The induction cable is a 4-core with a positioning detection line. Among them, the red A1-A1' line and the yellow B1-B1' line are signal lines with a resistance value close to zero, and the two black A2-A2' and B2-B2' lines are real water leakage induction lines evenly distributed with a certain resistance value . The connecting wire on the left short-circuits one end A1' and A2', B1' and B2' of the 4-core induction wire; the connecting wire on the right connects the other ends A1, A2, B1 and B2 of the 4-core induction wire to host.

[0024] When there is a water leakage situation, it is assumed that the two black lines are soaked...