CN105067198A - Leakage detector and leakage detection method - Google Patents
Leakage detector and leakage detection method Download PDFInfo
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- CN105067198A CN105067198A CN201510430755.XA CN201510430755A CN105067198A CN 105067198 A CN105067198 A CN 105067198A CN 201510430755 A CN201510430755 A CN 201510430755A CN 105067198 A CN105067198 A CN 105067198A
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Abstract
The embodiment of the invention provides a leakage detector and a leakage detection method, which improves problems that leakage detection operation is complicated in the prior art and a technical person is highly required. The leakage detector comprises an ultrasonic transducer, an ultrasonic focusing device, a processing device and a display screen, wherein the inlet of the ultrasonic focusing device is opposite to a to-be-detected object for acquiring ultrasonic generated when leakage happens to the to-be-detected object; the ultrasonic transducer is connected with the outlet of the ultrasonic focusing device for acquiring the ultrasonic obtained by the ultrasonic focusing device; the processing device is connected with the ultrasonic transducer for carrying out detection processing on the ultrasonic obtained by the ultrasonic transducer, analyzing and acquiring the leakage information of the to-be-detected object and transferring the leakage information to the display screen for display. By using the leakage detector and the leakage detection method, leakage detection complexity can be significantly reduced, leakage can be detected in real time, implementation is convenient, and promotion and applications are easy.
Description
Technical field
The present invention relates to detection technique field, in particular to a kind of leakage detector and leakage detection method.
Background technology
At present, industrial and life in all can use in a large number for storing the pressure vessel with transporting compressed gas body, as cylinder, gas tank, conveyance conduit etc.Due to a variety of causes, pressure vessel may produce small opening thus Leakage Gas occurs.Leakage Gas not only can cause the waste of the energy, and some gas also can pollute air.Therefore, judge exactly and locate the position producing and leak, being significant.
Traditional leakage detection method mainly contains following two kinds:
Article to be measured are filled with water or other medium by the first, by observing, measure the reduction being filled with medium in special time, and as the reduction etc. by detecting liquid level realizes, this is a kind of directly metering system.
Article to be measured are filled with the gas medium of certain pressure, are generally pressurized air, and observe in trailing water by the second, whether produce bubble as the standard of whether leaking around tested article.
These detection method complicated operations, to technician require higher.
Summary of the invention
In view of this, the object of the embodiment of the present invention is to provide a kind of leakage detector and leakage detection method, to improve Leak Detection complicated operation of the prior art, to require higher problem to technician.
To achieve these goals, the technical scheme of embodiment of the present invention employing is as follows:
First aspect, embodiments provides a kind of leakage detector, comprises ultrasonic transducer, poly-acoustic device, treating apparatus and display screen;
The entrance of described poly-acoustic device is relative with thing to be detected, for obtaining the ultrasound wave produced when described thing to be detected occurs to leak; Described ultrasonic transducer is connected with the outlet of described poly-acoustic device, for obtaining the ultrasound wave that described poly-acoustic device obtains; Described treating apparatus is connected with described ultrasonic transducer, and the ultrasound wave for obtaining described ultrasonic transducer carries out detection process, analyzes the leakage information obtaining described thing to be detected, described leakage information is passed to described display screen and shows.
In conjunction with first aspect, embodiments provide the first possible embodiment of first aspect, wherein, also comprise camera, described treating apparatus is also for controlling the shooting of described camera, storing the image at described thing leakage point place to be detected.
In conjunction with the first possible embodiment of first aspect, embodiments provide the embodiment that the second of first aspect is possible, wherein, also comprise laser designator, described treating apparatus also indicates described leakage point position on described thing to be detected for controlling described laser designator.
In conjunction with first aspect, or the embodiment that the first or the second of first aspect are possible, embodiments provide the third possible embodiment of first aspect, wherein, described treating apparatus comprises the prime amplifier be connected with described ultrasonic transducer, the bandpass filter be connected with described prime amplifier, the programmable amplifier be connected with described bandpass filter, the detecting circuit be connected with described programmable amplifier, the analog to digital converter be connected with described detecting circuit, and the processor to be connected with described analog to digital converter, described display screen is connected with described processor,
Hi-pass filter is connected with between described ultrasonic transducer and described prime amplifier.
In conjunction with the third possible embodiment of first aspect, embodiments provide the 4th kind of possible embodiment of first aspect, wherein, described detecting circuit comprises full-wave rectifying circuit and active low-pass filter, described full-wave rectifying circuit is connected with described programmable amplifier, and described active low-pass filter is connected between described full-wave rectifying circuit and described analog to digital converter.
In conjunction with the 4th kind of possible embodiment of first aspect, embodiments provide the 5th kind of possible embodiment of first aspect, wherein, also comprise the frequency mixer be connected with described programmable amplifier, the note amplifier able to programme be connected with described frequency mixer, and the earphone to be connected with described note amplifier able to programme, described leakage information comprises leakage intensity, be preset with volume and the corresponding relation leaking intensity in described processor, described leakage intensity calculates according to volume and described corresponding relation.
Second aspect, embodiments provides a kind of leakage detection method, is applied to leakage detector, and described leakage detector comprises ultrasonic transducer, poly-acoustic device, treating apparatus and display screen; Described method comprises:
Described poly-acoustic device obtains the ultrasound wave produced when described thing to be detected occurs to leak, and the described ultrasound wave obtained is passed to described ultrasonic transducer;
The described ultrasound wave obtained is passed to described treating apparatus by described ultrasonic transducer;
Described treating apparatus carries out detection process to the described ultrasound wave that described ultrasonic transducer transmits, obtains the leakage information of described thing to be detected according to described ultrasonic analysis;
Described leakage information is passed to described display screen show.
In conjunction with second aspect, embodiments provide the first possible embodiment of second aspect, wherein, described leakage detector also comprises camera and laser designator, and described method also comprises:
Described treating apparatus controls described laser designator and indicates leakage point position on described thing to be detected;
Control the instruction of described camera according to described laser designator, take, store the image at the described leakage point place of described thing to be detected.
In conjunction with the first possible embodiment of second aspect, embodiments provide the embodiment that the second of second aspect is possible, wherein, described leakage information comprises leakage intensity, is preset with volume and the corresponding relation leaking intensity in described treating apparatus;
Described treating apparatus carries out detection process to the described ultrasound wave that described ultrasonic transducer transmits, obtains the leakage information of described thing to be detected according to described ultrasonic analysis, comprising:
Described treating apparatus carries out high-pass filtering process to the described ultrasound wave that described ultrasonic transducer transmits, filtering low-frequency noise;
Described ultrasound wave after filtering low-frequency noise is carried out amplification process, be amplified signal;
Described amplifying signal is carried out bandpass filtering treatment, the noise that filter out background noise and device circuitry produce;
After again amplifying through the described amplifying signal after bandpass filtering treatment, carry out detection process, obtain detection output signal;
Described detection output signal is carried out analog-to-digital conversion process, obtains digital signal;
Leakage intensity is calculated according to the size of data of described digital signal and described corresponding relation.
In conjunction with the embodiment that the second of second aspect is possible, embodiments provide the third possible embodiment of second aspect, wherein, described method also comprises:
Frequency reducing after again amplifying through the described amplifying signal after bandpass filtering treatment is difference frequency signal by described treating apparatus;
Described difference frequency signal is carried out audio frequency and amplify process, obtain the signal can heard for people's ear;
The described signal amplifying process through audio frequency is play by earphone.
The leakage detector provided in the embodiment of the present invention and leakage detection method, having abandoned in prior art needs to be filled with medium and observes thing to be detected whether the methods of leaking occur, by the ingehious design to leakage detector, the hyperacoustic detection making leakage detector can pass through to produce when there is leakage to thing to be detected, process, the leakage informations such as accurate identified leakage intensity, leakage point, carry out compared with detection with adopting medium in prior art, the scope of application is wider, simple to operate, it is convenient to implement.
Further, the leakage detector that the embodiment of the present invention provides and leakage detection method, be integrated with camera, laser designator etc., accurately can take the image of leakage point, when detection person carries out leakage analyzing, the image of camera shooting can be called, comprehensively analyze according to image, data, realistic demand.
Further, the leakage detector that the embodiment of the present invention provides and leakage detection method, treating apparatus comprises prime amplifier, bandpass filter, programmable amplifier, detecting circuit, analog to digital converter, processor, Hi-pass filter etc., by the ingehious design to treating apparatus, make treating apparatus can realize, to the hyperacoustic accurate identification of leaking generation, process, ensure that the accuracy that leakage detector detects.
For making above-mentioned purpose of the present invention, feature and advantage become apparent, preferred embodiment cited below particularly, and coordinate appended accompanying drawing, be described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, be to be understood that, the following drawings illustrate only some embodiment of the present invention, therefore the restriction to scope should be counted as, for those of ordinary skill in the art, under the prerequisite not paying creative work, other relevant accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 shows the system chart of a kind of leakage detector that the embodiment of the present invention 1 provides;
Fig. 2 shows the system chart of the another kind of leakage detector that the embodiment of the present invention 1 provides;
Fig. 3 shows the system chart of the another kind of leakage detector that the embodiment of the present invention 1 provides;
Fig. 4 shows the system chart of the another kind of leakage detector that the embodiment of the present invention 1 provides;
Fig. 5 shows the system chart of the another kind of leakage detector that the embodiment of the present invention 1 provides;
Fig. 6 shows the structural representation of a kind of leakage detector that the embodiment of the present invention 1 provides;
Fig. 7 shows the schematic flow sheet of a kind of leakage detection method that the embodiment of the present invention 2 provides.
The name that Reference numeral is corresponding is called:
Camera 100, poly-acoustic device 101, ultrasonic transducer 102, laser designator 103, display screen 104, earphone jack 105;
Treating apparatus 200;
Prime amplifier 300, bandpass filter 301, programmable amplifier 302, detecting circuit 303, analog to digital converter 304, processor 305;
Frequency mixer 400, note amplifier 401 able to programme, earphone 402.
Embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.The assembly of the embodiment of the present invention describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.Therefore, below to the detailed description of the embodiments of the invention provided in the accompanying drawings and the claimed scope of the present invention of not intended to be limiting, but selected embodiment of the present invention is only represented.Based on embodiments of the invention, the every other embodiment that those skilled in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
Embodiment 1
In order to improve leakage detection method complicated operation of the prior art, require higher problem to technician, embodiments provide a kind of portable visual ultrasonic leak detector, detected by ultrasound wave and digital signal technique and leak intensity, and intuitively presented by display screen 104.This leakage detector may be used for the Leak Detection of pipe leakage, valve leak, electrically corona and mechanical defect etc.
As shown in Figure 1, this leakage detector comprises ultrasonic transducer 102, poly-acoustic device 101, treating apparatus 200 and display screen 104; The entrance of described poly-acoustic device 101 is relative with thing to be detected, for obtaining the ultrasound wave produced when described thing to be detected occurs to leak; Described ultrasonic transducer 102 is connected with the outlet of described poly-acoustic device 101, for obtaining the ultrasound wave that described poly-acoustic device 101 obtains; Described treating apparatus 200 is connected with described ultrasonic transducer 102, ultrasound wave for obtaining described ultrasonic transducer 102 carries out detection process, analyzes the leakage information obtaining described thing to be detected, described leakage information is passed to described display screen 104 and shows.
Wherein, ultrasonic transducer 102 preferably adopts 40KHz ultrasonic transducer 102; Poly-acoustic device 101 preferably adopts poly-horn, can isolation environment noise; Display screen 104 preferably adopts touching display screen 104, as: touch LCD screen 104, be convenient to realize man-machine interaction.
Review for the ease of maintainer, monitoring leakage position, as shown in Figure 2, preferred leakage detector also comprises camera 100, and described treating apparatus 200 is also taken for controlling described camera 100, store the image at described thing leakage point place to be detected.
According to the actual requirements, when implementing, gauger can carry out selection shooting by operation detection instrument control camera 100 pairs of leak points and store, and leak detector can be connected to server end analysis after measurement.
In order to ensure the reliability of leakage point location confirmation, shooting, as shown in Figure 3, preferred leakage detector also comprises the laser designator 103 for auxiliary instruction leak position, and described treating apparatus 200 also indicates described leakage point position on described thing to be detected for controlling described laser designator 103.
Wherein, preferred laser designator 103 is in parallel position with camera 100, like this when detecting, can indicate the detection position of the current aligning of leak detector, contributing to gauger and analyze source of leaks.
Wherein, the structure that realizes for the treatment of apparatus 200 has multiple, finds after deliberation, and a lot of system, at the initial stage occurring catastrophic failure, all can have some tendencys.Such as: when power equipment has slight electric discharge; Ducted gas has minor leakage; Bearing and mechanical part lack lubrication; When the situations such as valve leaks occur, all can produce the ultrasound wave that people's ear cannot be heard.Ultrasonic spectrum wider distribution, its energy peak is generally at about 40KHz, and thus ultrasonic transducer 102 preferably adopts 40KHz ultrasonic transducer 102, for the ultrasonic signal that reception check point sends.Poly-acoustic device 101 both can have been isolated from other direction ultrasound wave to the interference of measuring, and effectively can increase measuring distance again, accurately collection is from the ultrasound wave of check point.
The ultrasonic signal detected by ultrasonic transducer 102 is very faint, is generally all microvolt level, so have to pass through the amplification of prime amplifier 300, and the prime amplifier 300 of preferred high-gain high cmrr; In testing process, can low-frequency noise be received, due to a large amount of low-frequency noise received, if the intensity of the industrial frequency noise of 50Hz is much larger than received ultrasonic signal, preferably connect a Hi-pass filter, filtering low-frequency noise; In testing process, there is the noise of ground unrest and electronic circuit generation, preferred connecting band bandpass filter circuit, with the noise filtering wave filter filter out background noise above and produced by device or circuit, consider actual conditions, the passband of preferably with bandpass filter 301 is 38kHz ~ 42kHz, and centre frequency is 40KHz.
Consider that most of amplifying circuit enlargement factor is all a fixed value, if design improper meeting, there are the following problems: can't detect during small-signal or the direct overflow checking scope of large-signal.In order to improve this problem, improve the sensitivity of this leakage leak locator, programmable amplifier 302 is preferably set, programmable amplifier 302 can according to the size of detection signal, carry out enlargement factor adjustment, adapt to multi-signal amplitude, after programmable amplifier 302, again signal transmission is entered detecting circuit 303 process.
Based on above-mentioned research, as shown in Figure 4, embodiments provide the implementation of wherein a kind for the treatment of apparatus 200: described treating apparatus 200 comprises the prime amplifier 300 be connected with described ultrasonic transducer 102, the bandpass filter 301 be connected with described prime amplifier 300, the programmable amplifier 302 be connected with described bandpass filter 301, the detecting circuit 303 be connected with described programmable amplifier 302, the analog to digital converter 304 be connected with described detecting circuit 303, and the processor 305 to be connected with described analog to digital converter 304, described display screen 104 is connected with described processor 305, Hi-pass filter is connected with between described ultrasonic transducer 102 and described prime amplifier 300.
The structure that realizes of detecting circuit 303 has multiple, in the embodiment of the present invention, preferred described detecting circuit 303 comprises full-wave rectifying circuit and active low-pass filter, described full-wave rectifying circuit is connected with described programmable amplifier 302, and described active low-pass filter is connected between described full-wave rectifying circuit and described analog to digital converter 304.
Output voltage is become the DC voltage proportional with the mean value of input voltage by full-wave rectifying circuit.After becoming DC voltage, the interference of outer bound pair input signal will diminish, thus improves anti-interference.It is 10Hz that preferred active low-pass filter arranges frequency, relevant with the leakage intensity of test point by the signal amplitude after active low-pass filter, can judge to leak intensity according to signal amplitude.
Observe for the ease of gauger, the signal exported by detecting circuit 303 is changed by analog to digital converter 304, convert digital signal to, be input to processor 305, processor 305 is for controlling and signal transacting center, in processor 305, the size of data of collection can be associated with sound size direct proportion, be shown on display screen 104.
In order to improve the intuitive that Leak Detection intensity embodies further, preferably the mode that the ultrasonic signal leaking generation can be heard with people's ear is shown, owing to passing through the signal frequency range after programmable amplifier 302 amplification at 38kHz ~ 42kHz, the audibility range of people's ear is greatly between 1kHz to 20kHz, and the ultrasonic signal therefore detected could must be heard by people's ear by frequency reducing.Based on this, as shown in Figure 5, the road signal preferably exported by programmable amplifier 302 is the frequency mixer 400 of 37kHz by local oscillation circuit frequency, the difference frequency signal that centre frequency is 3kHz is obtained, by difference frequency signal by being converted to the signal can heard for people's ear after note amplifier parts through frequency mixer 400 process.After design like this, the sound size that people just hears by earphone 402 is to judge amount of leakage, to leak intensity, and the larger then leakage rate of sound is larger.Such as: leakage detector also comprises the frequency mixer 400 be connected with described programmable amplifier 302, the note amplifier able to programme 401 be connected with described frequency mixer 400, and the earphone 402 to be connected with described note amplifier 401 able to programme, described leakage information comprises leakage intensity, be preset with volume and the corresponding relation leaking intensity in described processor 305, described leakage intensity calculates according to volume and described corresponding relation.
The implementation of the leakage detector in the embodiment of the present invention has multiple, in order to make the principle of work of the embodiment of the present invention more clear, embodiments provides wherein a kind of implementation:
Be designed to hand-held leakage detector as described in Figure 6, earphone 402 is connected in earphone jack 105.The poly-horn of leakage detector is aimed at thing to be detected, by display screen 104 or/and earphone 402 obtains this position of thing to be detected whether there is leakage, mobile leakage detector, that determinand diverse location aimed at by poly-horn, until the amplitude shown in display screen 104 is or/and the sound sent in earphone 402 reaches maximum, using this position as leakage point, control device controls laser designator 103 and indicates this leakage point position, control camera 100 pairs of leakage point positions to take, record, detection data are passed to server end analysis, draw leakage point and leak intensity, design like this, can by the hyperacoustic detection occurring to produce when leaking to thing to be detected, process, accurate identified leakage intensity, the leakage informations such as leakage point, carry out compared with detection with adopting medium in prior art, the scope of application is wider, simple to operate, it is convenient to implement.
Embodiment 2
As shown in Figure 7, embodiments provide a kind of leakage detection method, be applied to leakage detector, described leakage detector comprises ultrasonic transducer, poly-acoustic device, treating apparatus and display screen; Described method comprises: step S500: described poly-acoustic device obtains the ultrasound wave produced when described thing to be detected occurs to leak, and the described ultrasound wave obtained is passed to described ultrasonic transducer; Step S501: the described ultrasound wave obtained is passed to described treating apparatus by described ultrasonic transducer; Step S502: described treating apparatus carries out detection process to the described ultrasound wave that described ultrasonic transducer transmits, obtains the leakage information of described thing to be detected according to described ultrasonic analysis; Step S503: described leakage information is passed to described display screen and shows.
Wherein, ultrasonic transducer preferably adopts 40KHz ultrasonic transducer; Poly-acoustic device preferably adopts poly-horn, can isolation environment noise; Display screen preferably adopts touching display screen, as: touch LCD screen, be convenient to realize man-machine interaction.
Review for the ease of maintainer, monitoring leakage position, preferred described leakage detector also comprises camera and laser designator, and described method also comprises: described treating apparatus controls described laser designator and indicates leakage point position on described thing to be detected; Control the instruction of described camera according to described laser designator, take, store the image at the described leakage point place of described thing to be detected.
Wherein, the implementation for the treatment of apparatus has multiple, and preferred described leakage information comprises leakage intensity, is preset with volume and the corresponding relation leaking intensity in described treating apparatus; Described treating apparatus carries out detection process to the described ultrasound wave that described ultrasonic transducer transmits, obtains the leakage information of described thing to be detected according to described ultrasonic analysis, comprise: described treating apparatus carries out high-pass filtering process to the described ultrasound wave that described ultrasonic transducer transmits, filtering low-frequency noise; Described ultrasound wave after filtering low-frequency noise is carried out amplification process, be amplified signal; Described amplifying signal is carried out bandpass filtering treatment, the noise that filter out background noise and device circuitry produce; After again amplifying through the described amplifying signal after bandpass filtering treatment, carry out detection process, obtain detection output signal; Described detection output signal is carried out analog-to-digital conversion process, obtains digital signal; Leakage intensity is calculated according to the size of data of described digital signal and described corresponding relation.
In order to improve the intuitive that Leak Detection intensity embodies further, preferably show leaking the mode that can hear with people's ear of ultrasonic signal produced, preferred described method also comprises: frequency reducing after again amplifying through the described amplifying signal after bandpass filtering treatment is difference frequency signal by described treating apparatus; Described difference frequency signal is carried out audio frequency and amplify process, obtain the signal can heard for people's ear; The described signal amplifying process through audio frequency is play by earphone.
The method that the embodiment of the present invention provides, its technique effect realizing principle and generation is identical with previous embodiment 1, is concise and to the point description, and the not mentioned part of embodiment of the method part can with reference to corresponding contents in previous embodiment 1.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (10)
1. a leakage detector, is characterized in that, comprises ultrasonic transducer, poly-acoustic device, treating apparatus and display screen;
The entrance of described poly-acoustic device is relative with thing to be detected, for obtaining the ultrasound wave produced when described thing to be detected occurs to leak; Described ultrasonic transducer is connected with the outlet of described poly-acoustic device, for obtaining the ultrasound wave that described poly-acoustic device obtains; Described treating apparatus is connected with described ultrasonic transducer, and the ultrasound wave for obtaining described ultrasonic transducer carries out detection process, analyzes the leakage information obtaining described thing to be detected, described leakage information is passed to described display screen and shows.
2. leakage detector according to claim 1, is characterized in that, also comprises camera, and described treating apparatus is also for controlling the shooting of described camera, storing the image at described thing leakage point place to be detected.
3. leakage detector according to claim 2, is characterized in that, also comprises laser designator, and described treating apparatus also indicates described leakage point position on described thing to be detected for controlling described laser designator.
4. the leakage detector according to claims 1 to 3 any one, it is characterized in that, described treating apparatus comprises the prime amplifier be connected with described ultrasonic transducer, the bandpass filter be connected with described prime amplifier, the programmable amplifier be connected with described bandpass filter, the detecting circuit be connected with described programmable amplifier, the analog to digital converter be connected with described detecting circuit, and the processor to be connected with described analog to digital converter, described display screen is connected with described processor;
Hi-pass filter is connected with between described ultrasonic transducer and described prime amplifier.
5. leakage detector according to claim 3, it is characterized in that, described detecting circuit comprises full-wave rectifying circuit and active low-pass filter, described full-wave rectifying circuit is connected with described programmable amplifier, and described active low-pass filter is connected between described full-wave rectifying circuit and described analog to digital converter.
6. leakage detector according to claim 5, it is characterized in that, also comprise the frequency mixer be connected with described programmable amplifier, the note amplifier able to programme be connected with described frequency mixer, and the earphone to be connected with described note amplifier able to programme, described leakage information comprises leakage intensity, and be preset with volume and the corresponding relation leaking intensity in described processor, described leakage intensity calculates according to volume and described corresponding relation.
7. a leakage detection method, is characterized in that, is applied to leakage detector, and described leakage detector comprises ultrasonic transducer, poly-acoustic device, treating apparatus and display screen; Described method comprises:
Described poly-acoustic device obtains the ultrasound wave produced when described thing to be detected occurs to leak, and the described ultrasound wave obtained is passed to described ultrasonic transducer;
The described ultrasound wave obtained is passed to described treating apparatus by described ultrasonic transducer;
Described treating apparatus carries out detection process to the described ultrasound wave that described ultrasonic transducer transmits, obtains the leakage information of described thing to be detected according to described ultrasonic analysis;
Described leakage information is passed to described display screen show.
8. leakage detection method according to claim 7, is characterized in that, described leakage detector also comprises camera and laser designator, and described method also comprises:
Described treating apparatus controls described laser designator and indicates leakage point position on described thing to be detected;
Control the instruction of described camera according to described laser designator, take, store the image at the described leakage point place of described thing to be detected.
9. leakage detection method according to claim 8, is characterized in that, described leakage information comprises leakage intensity, is preset with volume and the corresponding relation leaking intensity in described treating apparatus;
Described treating apparatus carries out detection process to the described ultrasound wave that described ultrasonic transducer transmits, obtains the leakage information of described thing to be detected according to described ultrasonic analysis, comprising:
Described treating apparatus carries out high-pass filtering process to the described ultrasound wave that described ultrasonic transducer transmits, filtering low-frequency noise;
Described ultrasound wave after filtering low-frequency noise is carried out amplification process, be amplified signal;
Described amplifying signal is carried out bandpass filtering treatment, the noise that filter out background noise and device circuitry produce;
After again amplifying through the described amplifying signal after bandpass filtering treatment, carry out detection process, obtain detection output signal;
Described detection output signal is carried out analog-to-digital conversion process, obtains digital signal;
Leakage intensity is calculated according to the size of data of described digital signal and described corresponding relation.
10. leakage detection method according to claim 9, is characterized in that, described method also comprises:
Frequency reducing after again amplifying through the described amplifying signal after bandpass filtering treatment is difference frequency signal by described treating apparatus;
Described difference frequency signal is carried out audio frequency and amplify process, obtain the signal can heard for people's ear;
The described signal amplifying process through audio frequency is play by earphone.
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| CN105302047A (en) * | 2015-11-26 | 2016-02-03 | 无锡拓能自动化科技有限公司 | Household gas intelligent monitoring system |
| CN107328528A (en) * | 2016-04-29 | 2017-11-07 | 国家电网公司 | A kind of ultrasonic wave air tightness detection system and method based on multisensor |
| CN107328528B (en) * | 2016-04-29 | 2023-11-07 | 国家电网公司 | Ultrasonic air tightness detection system and method based on multiple sensors |
| CN105910772A (en) * | 2016-05-18 | 2016-08-31 | 广东溢达纺织有限公司 | Ultrasonic leakage detection device and ultrasonic leakage detection method |
| CN106840539A (en) * | 2016-12-30 | 2017-06-13 | 石狮市骄阳节能环保科技有限公司 | The ultrasonic multi-functional gas monitoring instrument that a kind of hand-held gas suction is detected again |
| CN108169637A (en) * | 2017-12-28 | 2018-06-15 | 重庆臻远电气有限公司 | Envelop detection apparatus based on integrated chip |
| CN111902704A (en) * | 2018-02-27 | 2020-11-06 | 迪士顿股份公司 | Sensitivity estimation of a detector device comprising a transducer array |
| CN109029880A (en) * | 2018-06-28 | 2018-12-18 | 苏州大成电子科技有限公司 | A kind of hand-held leakage inspector based on contact net |
| CN109030374A (en) * | 2018-08-16 | 2018-12-18 | 上海禾赛光电科技有限公司 | Data managing method and data management terminal for laser gas detector |
| CN109341974A (en) * | 2018-10-29 | 2019-02-15 | 黄莹 | Equipment fault detection device and method based on mobile terminal |
| CN109341974B (en) * | 2018-10-29 | 2020-12-22 | 黄莹 | Equipment fault detection device and method based on mobile terminal |
| CN113029461A (en) * | 2021-03-09 | 2021-06-25 | 北京慧飒科技有限责任公司 | Online ultrasonic gas leakage detection system |
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Application publication date: 20151118 |