Water leakage detector, water leakage detecting system and water leakage detecting method

Abstract

The invention discloses a water leakage detector, a water leakage detecting system and a water leakage detecting method. The water leakage detector comprises an acquisition device and a processing device, wherein the acquisition device is used for acquiring sound signals for preprocessing; and the processing device is used for performing Fourier transformation of the sound signals, performing frequency analysis and calculation, extracting features of the sound signals, performing power spectrum estimation for the sound signals to analyze frequency components of the signals, and judging whether leakage exists or not according to peak values and bandwidths of a power spectrum. The water leakage detector and the water leakage detecting system are simple and accurate in detection, and a water leakage fault can be recognized according to a pattern recognition method and by means of Fourier functional transformation and power spectrum analysis, so that maintainers can remove the fault as soon as possible and replace water pipes, waste is avoided, water supply quality is guaranteed, and economic loss is reduced. Besides, the problem of waste due to difficulty in water supply leakage detection is avoided, and the detecting method is accurate and convenient in control.

Description

technical field [0001] The invention relates to detection technology, in particular to a water leakage detector for a water supply pipeline or a water supply pipe network, a detection system and a detection method with the detector. Background technique [0002] Water resources are related to all walks of life and thousands of households in cities. Since water resources are irreplaceable, people try their best to save water and save water. Urban water supply has always been an important infrastructure for urban economic development and people's lives. It has an extremely important position and has an overall and leading influence on urban development. On the premise of ensuring the safety and reliability of water supply, solving the problem of serious leakage of water supply pipelines or water supply pipe networks has become a major problem that has plagued the world's water supply industry for a long time. [0003] At present, most cities in my country adopt the passive le...

AI Technical Summary

Problems solved by technology

The internal detection method adopts in-pipe ball throwing based on magnetic flux, ultrasonic, eddy current, video and other technologies. The detection is more accurate, but the bulk is only suitable for large-diameter pipelines. The instrument based on the internal detection method is generally designed as a pig type. This structure is easy to Blockage occurs, causing serious accidents of the entire confession pipeline or water supply network outage, and the cost is large, so it is not suitable for water supply pipeline network detection

External detection methods such as inspection along the pipe, flow difference method, pressure difference method and negative pressure wave method are less expensive, but the accuracy is also lower

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