40results about How to "Enable leak detection" patented technology

The present invention provides a method, system, and computer program product for light weight memory leak detection. A method in accordance with an embodiment of the present invention comprises: obtaining raw free memory statistics; approximating free memory after garbage collection from the raw free memory statistics; and analyzing the approximated free memory after garbage collection to identify a potential memory leak. A method in accordance with another embodiment of the present invention comprises the steps of: obtaining raw free memory statistics; generating a vector of memory leak indicators from the raw free memory statistics; comparing the vector of memory leak indicators against a plurality of vectors of the same memory leak indicators for known memory leak scenarios; and identifying a potential memory leak based on the comparison.

The invention relates to a long distance concentrated sulphuric acid pipe leakage monitoring method, including that a cable and a cable fault monitor are utilized to monitor leakage state and leakage position of concentrated sulphuric acid pipe. The method is characterized in that the cable is an acid sensitive one with dressing made by polyether-ether-ketone PEEK material, adapts to water, alkali or mixture thereof and multiple mediums and is sensitive to concentrated sulphuric acid only, the acid sensitive cable is parallelly paved at the bottom of pipe along the whole course of concentrated sulphuric acid pipe, one end of the acid sensitive cable is connected on to the cable fault monitor, concentrated sulphuric acid leakage is monitored in real time, and the cable fault monitor automatically alarms once pipe leakage happens and provides the position of leakage point. The invention has the advantages that monitoring distance is long, single section longest monitoring distance can reach 30km, the method is heat resistant and can be resistant to high temperature of 250 DEG C for a long time, insulating property is good, structure is simple, use convenience is achieved, cost is low, no danger is produced, and online monitoring, leakage alarming and leakage positioning can be realized, and the invention is widely applied in long distance concentrated sulphuric acid pipe leakage monitoring.

The invention discloses a pre-warning system based on an Internet of Things technology. The system comprises a control using terminal, a smoke module, a human shape module, a gas module, a remote alarming module and a power supply module, and the smoke module, the human shape module, the gas module, the remote alarming module and the power supply module are connected with the control using terminal. The pre-warning system based on the Internet of Things technology is capable of achieving remote anti-theft and fireproof pre-warning.

The invention discloses an all-fiber open type gas monitoring system and a detection method. The system comprises a wavelength tunable laser, an optical fiber coupler, an optical fiber beam splitter,an optical fiber collimator, a reference pool based on a hollow-core optical fiber, an optical fiber ring cavity interferometer, a three-mirror cavity system, a focusing lens, a photoelectric detector, a laser control module, an analog-to-digital conversion module, a digital-to-analog conversion module and a computer control unit. According to the invention, the hollow-core optical fiber and the optical fiber ring cavity interferometer which are small in size and high in flexibility are used for replacing a traditional fragile glass type absorption cell and an F-P type etalon sensitive to an optical path respectively to realize laser center frequency locking, spectral system correction and tuning frequency range correction; the three-mirror cavity system is used for replacing a traditionaltwo-mirror linear reflection mode to achieve large-range area open type gas monitoring.

The invention discloses a safety warning platform applying a wireless sensing technology. The platform includes a control use terminal, a smog module connected with the control use module, a humanoid module, a gas module, a remote alarm module and a power module so that antitheft and fireproof remote early warning is realized and thus the safety warning platform applying the wireless sensing technology is realized.

The invention discloses a biological safety cabinet for monitoring filter leakage in real time. The biological safety cabinet comprises a cabinet body, an air blower, a negative pressure channel and a detecting structure, wherein an air outlet is formed in the top of the cabinet body; the air blower is arranged on the inner upper part of the cabinet body; the negative pressure channel is arranged at the outer side of the rear part of the cabinet body; one end of the negative pressure channel is arranged below the cabinet body, and the other end of the negative pressure channel extends to the top end of the cabinet body along the rear part of the cabinet body; the detecting structure is arranged on a position, positioned on the upper part of a cabinet body working region, in the cabinet body. According to the biological safety cabinet for monitoring filter leakage in real time disclosed by the invention, the detecting structure is arranged in the working region, and a probe for detecting cleanness is fixed on a movable track in the detecting structure and can move in the track, so that in the practical use of a workbench, the cleanness detecting probe scans along the track row by row to realize leakage detection; when leakage exists, a signal is output in real time, so that the equipment can timely emit a sound-light alarm signal to prompt an operator to timely check and maintain a filter.

The invention discloses a method for achieving a pre-warning system based on the internet of things technology. The pre-warning system comprises a control use terminal and a smoke module, a figure module, a gas module, a remote alarm module and a power supply module which are connected with the control use terminal. The pre-warning system achieves remote pre-warning of burglary prevention and fire prevention, and accordingly the method for achieving the pre-warning system based on internet of things technology is achieved.

The invention discloses a fuel double-wall pipe leakage detection device and a detection method. The detection device comprises an integrated block, an oil inlet hole is horizontally arranged at a left end surface of the integrated block, a first process hole is arranged at an upper end of the oil inlet hole in a parallel way, a second process hole is vertically arranged at an upper end surface ofthe integrated block, an oil outlet hole is vertically arranged at a lower end surface, and the oil outlet hole and the second process hole respectively communicate with the first process hole and the oil inlet hole; each of the oil inlet hole and the oil outlet hole is connected with a pipe joint, and a throttle valve is arranged at a right end of a junction of the oil inlet hole and the oil outlet hole, and an overflow valve is arranged at the junction of the first process hole and the second process hole; a pressure sensor is arranged at a front end surface of the integrated block and is connected into the first process hole. The detection device disclosed by the invention has the advantages that the device is simplified in structure, reduced in space, and convenient for operation; thedetection on the fuel double-wall pipe leakage is realized through the cooperative use of the throttle valve and the overflow valve, and meanwhile, the pressure-reduced discharging is performed on the leaked oil, thereby preventing large pressure from damaging the detection device.

The invention discloses an outdoor aerial gas pipeline non-contact long-distance leakage detecting method. The method comprises the following steps that a, a leakage detecting point is determined, specifically, the position of the to-be-detected leakage point is observed, and a pipeline joint position or a pipeline structure abnormal position is selected as the leakage detecting point; b, standingpoints are determined, specifically, after the leakage detecting point is determined, three standing points are arranged in a position right facing the leakage detecting point, a position 2-3 m deviating leftwards from the leakage detecting point and a position 2-3 m deviating rightwards from the leakage detecting point correspondingly; c, leakage detection is performed; d, data analyzing is performed; and e, data recording is performed. The method has the beneficial effects that by adopting an infrared detecting technology, by means of the characteristic that wavebands reflected by methane in light waves are inconsistent after natural gas is leaked, aerial long-distance outdoor aerial gas pipeline leakage detection is achieved, operation is easy, and the safety is high; and by measuringthe leakage detecting point from the multiple points in multiple directions, the gas leakage status can be evaluated comprehensively, and the detecting precision is improved.

The invention discloses a method for detecting leakage of an air compressor. The method comprises the following steps: firstly, a pressurizing device is arranged to be connected with the air source equipment, then the pressurizing device is connected with the air outlet connector of the air compressor to input the high pressure air source to the air outlet cavity of the air compressor, and an airsource triple piece is arranged between the pressurizing device and the air source equipment for air source treatment; and finally, the soap bubbling method is applied to detect air leakage of the aircompressor. The invention provides a detection device for detecting leakage of the air compressor. The detection method is that the soapy water is smeared on the leakage-prone part, bubbling is visually detected and leakage detection is realized so that the structure is simple and checking is convenient, and the soapy liquid can be washed away by the air gun after the detection is completed. Thecover is arranged so that the detection can be performed quickly and conveniently, the detection speed can be greatly accelerated and the cleaning is convenient.

The invention discloses a fluid conveying pipeline. The pipeline comprises a non-metal pipe body and an optical fiber sensor; the non-metal pipe body comprises an anti-corrosion inner pipe and a protective outer pipe which are sequentially arranged from inside to outside; the optical fiber sensor comprises an optical fiber and a Faraday rotator mirror; the optical fiber is connected with the Faraday rotator mirror; and the optical fiber and the Faraday rotator mirror are both buried in the protective outer pipe. The invention further discloses a preparation method of the fluid conveying pipeline and a fluid conveying pipeline leakage detection system. The fluid conveying pipeline leakage detection device comprises the fluid conveying pipeline, a demodulator connected with the optical fiber, and a signal processing terminal connected with the demodulator. According to the fluid conveying pipeline of the invention, the conveying pipeline is set to be the non-metal pipe body and is not prone to corrosion, meanwhile, the optical fiber is buried in the non-metal pipe body; the laying of the non-metal pipe body and the laying of the optical fiber are integrated; the optical fiber is laidin the whole length direction of the non-metal pipe body; and therefore, long-distance non-metal pipe body leakage detection can be achieved, a detection coverage rate is higher, and detection precision is higher.

The invention provides a method for detecting the leakage of a seal chamber based on spontaneous expanding gas, and belongs to the technical field of leakage detection. The method specifically comprises the steps: placing a solid material, which can generate expanded gas when meeting heat or is volatile under the normal temperature, in the seal chamber as a reagent before the assembly of the seal chamber; carrying out the assembly to form the seal chamber, heating the seal chamber to proper temperature during leakage detection (there is no need of heating when a reagent is volatile under the normal temperature), and separating out the gas in the solid reagent, wherein the gas tends to overflow because of the miniature pressure difference generated by the gas. When the seal chamber has a leakage problem, the method can detect the gas outside the seal chamber. When the method is used for the detection of the leakage of the seal chamber, the method can effectively achieves the leakage detection of a seal chamber which is compact in structure or has any complex structure.

The invention discloses a leakage detecting device for non-excavation construction arc pipes. The leakage detecting device comprises a substrate, a bottom plate, leakage detecting mechanisms, a waterstorage tank and a hydraulic oil tank; the at least three leakage detecting mechanisms are arranged above the substrate at equal intervals, two transverse beams are arranged on the two sides of the leakage detecting mechanisms in parallel, the leakage detecting mechanisms are movably connected between the two transverse beams through second screws and guiding rods, the ends of the second screws are provided with second motors, the two ends of the transverse beams are connected with the substrate through first screws and second stand columns, first motors are arranged at the bottom ends of thefirst screws, and the leakage detecting mechanisms are connected with the water storage tank and the hydraulic oil tank through water conveying pipes and oil conveying pipes. The leakage detecting device is simple in structure and high in practicability, leakage detection processing of the arc pipes with different pipe diameter modes and sizes can be achieved, rapid clamping positioning of the arcpipes can be achieved, the leakage detection efficiency on the arc pipes is greatly improved, and the working range of the leakage detecting device is enlarged.

The invention provides hazardous chemical substance gas telemetering detection equipment and method. The hazardous chemical substance gas telemetering detection equipment comprises a server, a lens group used for collecting images, a sweeping device used for collecting infrared spectrums, an infrared telescopic system used for amplifying the collected infrared spectrums, and a measuring device used for measuring the amplified infrared spectrums. And the lens group and the measuring device are in signal connection with the server. Compared with the prior art, the hazardous chemical substance gas telemetering detection equipment provided by the invention is based on a Fourier transform infrared spectroscopic analysis principle, adopts a passive telemetering mode, can acquire characteristic radiation or absorption spectrum of hazardous chemical substance gas at a middle infrared band of 2.5-15 microns in situ at a leakage place, and through an intelligent identification algorithm running at a cloud end, the analysis on the leaked gas is realized.

The invention relates to a clean bench capable of monitoring leakage in real time. The clean bench comprises a box body, a detection structure, a movement unit and a scanning probe, wherein the box body is of a structure with an opening in one side, and a working area is formed inside the box body; the detection structure is arranged in the box body and is positioned at the upper part of the working area; the detection structure comprises a scanning movement platform which is arranged in the box body and is positioned at the upper part of the working area; the movement unit is arranged in the scanning movement platform; and the scanning probe is arranged on the movement unit. According to the clean bench capable of monitoring the leakage in real time, the detection structure is arranged in the working area, the probe for detecting the cleanliness is fixed on one movement track in the detection structure and can move in the track, the probe for detecting the cleanliness can gradually scan along the track when the clean bench is in actual use and the leakage detection is realized; when the leakage occurs, a signal can be output in real time, and equipment can give a sound-light alarm signal timely to prompt operating personnel to check and maintain timely.

The invention discloses a method for realizing and using an Internet of things technology early warning system. The Internet of things technology early warning system comprises a control use terminal,and a group connected with the control use terminal and including a smoke module, a human shape module, a gas module, a remote alarm module and a power supply module, so as to realize the remote alarm of antitheft and fire prevention. Thus, the method for realizing and using an Internet of things technology early warning system is achieved.

The invention discloses a method for achieving a home security monitoring platform. The method is that a use terminal, a smoke module, a human module, a gas module, a remote alarming module and a power module which are connected with the use terminal are controlled to achieve remote early warning for preventing theft and fire.