CN218822736U - Water supply and drainage pipe network distributed optical fiber real-time monitoring device, equipment and electronic product - Google Patents
Water supply and drainage pipe network distributed optical fiber real-time monitoring device, equipment and electronic product Download PDFInfo
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- CN218822736U CN218822736U CN202221176231.4U CN202221176231U CN218822736U CN 218822736 U CN218822736 U CN 218822736U CN 202221176231 U CN202221176231 U CN 202221176231U CN 218822736 U CN218822736 U CN 218822736U
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Abstract
The utility model discloses a supply and drain pipe network distributing type optic fibre real-time supervision device, equipment and electronic product. The device specifically comprises an optical fiber acoustic wave sensor, a sensing optical fiber and a locking sheet; the optical fiber sound wave sensor is connected with the sensing optical fiber, the sensing optical fiber is wound on the outer surface of the device to be tested through the locking piece, when the device to be tested vibrates, light in the sensing optical fiber changes due to the elasto-optic effect, and the vibration event can be monitored by detecting the change of the light, so that the technical problems that in the prior art, the monitoring means of an underground pipeline network is limited, a large amount of manual work is needed are solved, the technical effect of monitoring the underground pipeline network in real time is achieved on the premise that manual exploration is not needed, and the use scene is widened.
Description
Technical Field
The embodiment of the utility model provides a relate to safety monitoring technical field, especially relate to a supply and drainage pipe network distributing type optic fibre real-time supervision device, equipment and electronic product.
Background
The urban underground pipe network is densely distributed, water supply pipelines climb year by year along with water consumption, the pipelines are continuously increased, service time of the pipelines is increased, and due to the corrosion of the pipelines, natural disasters, artificial damages and other factors, the safety of the pipelines becomes increasingly severe. The leakage of the pipeline not only brings disadvantages to daily life water of people, but also brings huge economic and environmental losses, and even brings huge threats to the life and property safety of people.
However, the existing means for monitoring the state of the water supply network has many problems, such as limited means for monitoring the health of the urban underground network, especially lack of means for monitoring the state of the urban underground network without affecting the normal operation and use conditions of the road; secondly, more monitoring means at the present stage still adopt the traditional artificial exploration method, an off-line noise meter and the like, but the real-time monitoring of the whole pipe network state cannot be realized only by the existing method.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a supply and drain pipe network distributing type optic fibre real-time supervision device to the realization carries out real-time supervision's technological effect to whole pipe network state.
In a first aspect, an embodiment of the present invention provides a distributed optical fiber real-time monitoring device for a water supply and drainage pipe network, including an optical fiber acoustic wave sensor, a sensing optical fiber and a locking sheet; the optical fiber acoustic wave sensor is connected with the sensing optical fiber, and the sensing optical fiber is wound on the outer surface of the device to be tested through the locking sheet.
Preferably, the locking piece comprises a metal elastic piece and a pressing block fixed on the inner side of the metal elastic piece, and the sensing optical fiber is installed between the metal elastic piece and the pressing block fixed on the inner side of the metal elastic piece.
Preferably, the device further comprises a movable mounting seat; the movable mounting seat is fixedly provided with the sensing optical fiber every other preset length.
Preferably, the sensing optical fiber is a single-mode optical fiber and is fixedly installed along a water supply and drainage pipe network, and the device to be tested comprises a fire hydrant and a valve.
Preferably, the optical fiber acoustic wave sensor comprises a laser, a light splitter, a sensing optical fiber and a signal processing device; the laser is connected with the optical splitter, and the optical splitter is connected with the sensing optical fiber and the signal processing device; wherein,
the laser is used for providing an initial optical signal;
the sensing optical fiber is used for generating tiny changes according to the refractive index and the length of light rays in the elasto-optical effect when the device to be tested vibrates;
the optical splitter is used for splitting the initial optical signal sent by the laser and the monitoring optical signal returned by the sensing optical fiber according to a preset proportion and then sending the split optical signals to the signal processing device;
and the signal processing device is used for calculating the light signal obtained after the initial light signal is split and the light signal obtained after the monitoring light signal is split to obtain the light intensity obtained after the initial light signal is split and the light intensity obtained after the monitoring light signal is split.
Preferably, the distributed optical fiber real-time monitoring device for the water supply and drainage pipe network further comprises a display device; the display device is connected with the signal processing device; wherein,
and the display device is used for displaying and comparing the light intensity after the initial light signal is split and the light intensity after the monitoring light signal is split in a graph mode.
Preferably, the signal processing device comprises a detector, a data acquisition circuit and a data processing circuit; the detector is connected with the optical splitter, the data acquisition circuit is connected with the detector, and the data processing circuit is connected with the data acquisition circuit; wherein,
the detector is used for converting the optical signal obtained after the initial optical signal is split and the optical signal obtained after the monitoring optical signal is split into electric signals;
the data acquisition circuit acquires the electric signal and converts the electric signal into a digital signal;
and the data processing circuit is used for obtaining the light intensity of the split initial optical signal and the light intensity of the split monitoring optical signal according to the digital signal.
The application also provides an electronic product, the electronic product comprises the water supply and drainage pipe network distributed optical fiber real-time monitoring device.
The application also provides a supply and drainage pipe network distributed optical fiber real-time monitoring equipment, supply and drainage pipe network distributed optical fiber real-time monitoring equipment includes as above supply and drainage pipe network distributed optical fiber real-time monitoring device.
The utility model discloses well sensing optical fiber passes through the stay winding is installed in the device to be tested surface, and when the device to be tested took place to vibrate, light in the sensing optical fiber is because the elasto-optical effect changes, then the accessible detects light change monitoring vibration incident, and the monitoring means who has solved underground piping network among the prior art is limited, needs the artificial technical problem of a large amount of uses, has reached under the prerequisite that need not artifical exploration, has reached the technical effect of real-time supervision underground piping network, has widened the use scene.
Drawings
FIG. 1 is a functional block diagram of an embodiment of an automatic task configuration circuit according to the present invention;
FIG. 2 is a functional block diagram of another embodiment of the task autoconfiguration circuit of the present invention;
fig. 3 is a functional block diagram of another embodiment of the task autoconfiguration circuit of the present invention.
Description of reference numerals:
100-laser, 200-beam splitter, 300-signal processing device, 400-display device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The utility model provides a water supply and drainage pipe network distributed optical fiber real-time monitoring device, which comprises an optical fiber sound wave sensor, a sensing optical fiber and a locking sheet; the optical fiber acoustic wave sensor is connected with the sensing optical fiber, and the sensing optical fiber is wound on the outer surface of the device to be tested through the locking sheet.
It should be noted that, the monitoring device of the present application is based on the principle of coherent rayleigh scattering, utilizes the sensitive characteristic of the optical fiber to the sound wave vibration, and when the external vibration acts on the sensing optical fiber, due to the elasto-optical effect, the refractive index and the length of the optical fiber will change slightly, thereby causing the phase change of the transmission signal in the optical fiber and causing the light intensity to change; when the external vibration causes the phase to change, the signal intensity of the point changes, and the detection of the vibration event can be realized by detecting the intensity change of the signals before and after the vibration.
Specifically, the locking piece comprises a metal elastic sheet and a pressing block fixed on the inner side of the metal elastic sheet, and the sensing optical fiber is installed between the metal elastic sheet and the pressing block fixed on the inner side of the metal elastic sheet.
It is easily understood because need the vibration incident of optic fibre collection environment, traditional fixed mode is unfavorable for the vibration of optic fibre to take place for example modes such as adhesion, banding, and this has certain influence to the collection of vibration incident, consequently need adopt new fixed mode, and the sensing optical fiber is fixed to this application mode of using metal shrapnel cooperation briquetting, and the area of contact of optic fibre and stay is little, is favorable to gathering the vibration incident.
According to the technical scheme, the sensing optical fiber is wound on the outer surface of the device to be tested, when the device to be tested vibrates, light in the sensing optical fiber changes due to the elasto-optical effect, the vibration event can be monitored by detecting the change of the light through the sensing optical fiber, the technical problem that in the prior art, the underground pipeline network is limited in monitoring means and needs to be used in large quantity of manpower is solved, the technical effect of monitoring the underground pipeline network in real time is achieved on the premise that artificial exploration is not needed, and the use scene is widened.
The utility model provides a distributed optical fiber real-time monitoring device for a water supply and drainage pipe network, which also comprises a movable mounting seat; the movable mounting seat is fixedly provided with the sensing optical fiber every other preset length.
It is worth emphasizing that the movable installation seat is paved along the water pipe network, and the optical fiber distance is long, so that the movable installation seat can be adopted to reduce the large-angle bending of the optical fiber, reduce the attenuation of light intensity, improve the intensity of returned monitoring signals, improve the monitoring distance to a certain extent and enlarge the monitoring range.
Specifically, the sensing optical fiber adopts a single-mode optical fiber, a water supply and drainage pipe network is fixedly installed, and the device to be tested comprises a fire hydrant and a valve.
It should be noted that the fire hydrant and the valve are easy to leak, so that the fire hydrant and the valve need sensing optical fibers to be wound and installed on the outer surfaces of the fire hydrant and the valve, the fire hydrant and the valve have buried parts, and some valves are buried valves, and are difficult to find in time after the water leakage condition occurs, but the sound and vibration of the water leakage can be collected by the sensing optical fibers, and the feedback is monitored in real time, so that the maintenance speed is improved, and the economic loss is reduced.
This embodiment is through the fixed mode of disclosing optic fibre, discloses the optic fibre type of selecting for use, discloses the type of device under test, has perfected technical scheme, has improved the sensitivity of sensing optical fibre to vibration event detection, has improved the monitoring precision to a certain extent, has improved the technological effect of carrying out real-time supervision to whole pipe network state.
Referring to fig. 1, the utility model provides a distributed optical fiber real-time monitoring device for a water supply and drainage pipe network, wherein the optical fiber acoustic wave sensor comprises a laser, a beam splitter and a signal processing device; the laser is connected with the optical splitter, and the optical splitter is connected with the sensing optical fiber and the signal processing device; wherein,
the laser is used for providing an initial optical signal;
the sensing optical fiber is used for generating tiny changes according to the refractive index and the length of light rays in the elasto-optical effect when the device to be tested vibrates;
the optical splitter is used for splitting the initial optical signal sent by the laser and the monitoring optical signal returned by the sensing optical fiber according to a preset proportion and then sending the split optical signals to the signal processing device;
and the signal processing device is used for calculating the light signal obtained after the initial light signal is split and the light signal obtained after the monitoring light signal is split to obtain the light intensity obtained after the initial light signal is split and the light intensity obtained after the monitoring light signal is split.
It is easily understood that, this embodiment is based on the principle of coherent rayleigh scattering, adopt the ordinary single mode communication optical cable of single core as the sensor, utilize optic fibre to the sensitive characteristic of vibration, when external vibration acts on sensing optical fibre, because the elasto-optic effect, the refracting index of optic fibre, length will produce small change, thereby lead to the phase place change of transmission signal in the optic fibre, make the light intensity change, make the signal intensity of this point change when external vibration leads to the phase place to change, detect the intensity change of signal before and after the vibration through beam splitter and time delay comparator, can realize the detection of vibration incident.
Referring to fig. 2, the distributed optical fiber real-time monitoring device for the water supply and drainage pipe network further comprises a display device; the display device is connected with the signal processing device; wherein,
and the display device is used for displaying and comparing the light intensity after the initial light signal is split and the light intensity after the monitoring light signal is split in a graph mode.
It is worth emphasizing that, because the situation of false alarm or missing report may occur when the vibration event is automatically monitored, when water leakage occurs, the vibration event can be continuously monitored, and at the moment, if the situation of missing report occurs, an operator can timely find abnormality by observing the display device.
The system comprises a light source, a light detector and a controller, wherein the light source is used for detecting the change of the light intensity of the light source, and the controller is used for controlling the light source to emit light according to the change of the light intensity.
It should be noted that, in this embodiment, the alarm may be an alarm program, an audible alarm device, a light alarm device, and a mail alarm device installed in the upper computer, and when the alarm is given by using the alarm program of the upper computer, the upper computer may calculate the specific position of the vibration area by using the propagation speed of the light in the optical fiber, so as to implement timely and accurate investigation.
Referring to fig. 3, the signal processing apparatus includes a detector, a data acquisition circuit, and a data processing circuit; the detector is connected with the optical splitter, the data acquisition circuit is connected with the detector, and the data processing circuit is connected with the data acquisition circuit; wherein,
the detector is used for converting the optical signal obtained after the initial optical signal is split and the optical signal obtained after the monitoring optical signal is split into electric signals;
the data acquisition circuit acquires the electric signal and converts the electric signal into a digital signal;
and the data processing circuit is used for obtaining the light intensity of the split initial optical signal and the light intensity of the split monitoring optical signal according to the digital signal.
The embodiment discloses a specific circuit, perfects the technical scheme, and divides the optical signal sent by the laser and the optical signal returned by the sensing light into two parts through the optical splitter, and calculates the optical signal after the initial optical signal is split and the optical signal after the monitoring optical signal is split through the signal processing device to obtain the light intensity after the initial optical signal is split and the light intensity after the monitoring optical signal is split.
Specifically, the signal processing device comprises a detector, a data acquisition circuit and a data processing circuit; the detector is connected with the optical splitter, the data acquisition circuit is connected with the detector, and the data processing circuit is connected with the data acquisition circuit; wherein,
the detector is used for converting the optical signal obtained after the initial optical signal is split and the optical signal obtained after the monitoring optical signal is split into electric signals;
the data acquisition circuit acquires the electric signal and converts the electric signal into a digital signal;
and the data processing circuit is used for obtaining the light intensity of the initial optical signal after light splitting and the light intensity of the monitoring optical signal after light splitting according to the digital signal.
It is easy to understand that, the process of digitizing the light intensity of light needs to perform photoelectric conversion and analog-to-digital conversion, but does not convert the light intensity into a digital signal, so that it is difficult to detect that the refractive index and the length of the light inside the elasto-optical effect have small changes.
This embodiment is through disclosing the concrete circuit of optic fibre acoustic wave sensor, technical scheme has further been perfected, provide initial light signal through the laser instrument, and send to the detector in the data processing device by data processing device after splitting initial light signal and the monitoring light signal that returns through the spectroscope, data acquisition circuit and data processing circuit are handled respectively, turn into the signal of telecommunication with light signal reconversion digital signal, demonstrate digital signal on display device with the mode of chart again, audio-visual signal that shows to have the vibration incident shows, the monitoring to the vibration incident has been realized, the measurement accuracy is improved, user experience has been improved.
The utility model discloses still provide an electronic product, electronic product includes the root as above optic fibre sound wave sensor.
Of course, the embodiment of the utility model provides an electronic product possesses the corresponding functional module and the beneficial effect of above-mentioned water supply and drainage pipe network distributed optical fiber real-time supervision device, no longer gives unnecessary details here one by one.
The utility model discloses still provide a supply and drain pipe network distributed optical fiber real-time supervision equipment, supply and drain pipe network distributed optical fiber real-time supervision equipment include as above supply and drain pipe network distributed optical fiber real-time supervision device.
Of course, the embodiment of the utility model provides a supply and drain pipe network distributed optical fiber real-time supervision equipment that provides possesses the corresponding functional module and the beneficial effect of above-mentioned supply and drain pipe network distributed optical fiber real-time supervision device, no longer gives unnecessary details one by one here.
From the above description of the embodiments, it is obvious for a person skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly can be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention essentially or those portions contributing to the prior art may be embodied in the form of software products, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, etc., and include several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method of the embodiments of the present invention.
It should be noted that, in the embodiment of the search apparatus, each included unit and each included module are merely divided according to functional logic, but are not limited to the above division, as long as corresponding functions can be implemented; in addition, the specific names of the functional units are also only for the convenience of distinguishing from each other, and are not used to limit the scope of the present invention.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (9)
1. A distributed optical fiber real-time monitoring device for a water supply and drainage pipe network is characterized by comprising an optical fiber sound wave sensor, a sensing optical fiber and a locking sheet; the optical fiber acoustic wave sensor is connected with the sensing optical fiber, and the sensing optical fiber is wound and installed on the outer surface of the device to be tested through the locking sheet.
2. The device for real-time monitoring of the distributed optical fibers of the water supply and drainage pipe network according to claim 1, wherein the locking piece comprises a metal elastic piece and a pressing block fixed on the inner side of the metal elastic piece, and the sensing optical fiber is installed between the metal elastic piece and the pressing block fixed on the inner side of the metal elastic piece.
3. The device for monitoring the distributed optical fibers of the water supply and drainage pipe network in real time according to claim 1, further comprising a movable mounting seat; the movable mounting seat is fixedly provided with the sensing optical fiber every other preset length.
4. The device for monitoring the distributed optical fibers of the water supply and drainage pipe network in real time according to claim 1, wherein the sensing optical fibers are single-mode optical fibers and are fixedly installed along the water supply and drainage pipe network, and the device to be tested comprises a fire hydrant and a valve.
5. The device for monitoring the distributed optical fibers of the water supply and drainage pipe network in real time according to claim 1, wherein the optical fiber acoustic wave sensor comprises a laser, a light splitter and a signal processing device; the laser is connected with the optical splitter, and the optical splitter is connected with the sensing optical fiber and the signal processing device; wherein,
the laser is used for providing an initial optical signal;
the sensing optical fiber is used for generating tiny changes according to the refractive index and the length of light rays in the elasto-optical effect when the device to be tested vibrates;
the optical splitter is used for splitting the initial optical signal sent by the laser and the monitoring optical signal returned by the sensing optical fiber according to a preset proportion and then sending the split optical signal to the signal processing device;
and the signal processing device is used for calculating the light signal obtained after the initial light signal is split and the light signal obtained after the monitoring light signal is split to obtain the light intensity obtained after the initial light signal is split and the light intensity obtained after the monitoring light signal is split.
6. The device for monitoring the distributed optical fibers of the water supply and drainage pipe network in real time as claimed in claim 5, wherein the device for monitoring the distributed optical fibers of the water supply and drainage pipe network in real time further comprises a display device; the display device is connected with the signal processing device; wherein,
and the display device is used for displaying and comparing the light intensity after the initial light signal is split and the light intensity after the monitoring light signal is split in a graph mode.
7. The water supply and drainage pipe network distributed optical fiber real-time monitoring device as claimed in claim 5, wherein the signal processing device comprises a detector, a data acquisition circuit and a data processing circuit; the detector is connected with the optical splitter, the data acquisition circuit is connected with the detector, and the data processing circuit is connected with the data acquisition circuit; wherein,
the detector is used for converting the optical signal obtained after the initial optical signal is split and the optical signal obtained after the monitoring optical signal is split into electric signals;
the data acquisition circuit acquires the electric signal and converts the electric signal into a digital signal;
and the data processing circuit is used for obtaining the light intensity of the initial optical signal after light splitting and the light intensity of the monitoring optical signal after light splitting according to the digital signal.
8. An electronic product, characterized in that the electronic product comprises the distributed optical fiber real-time monitoring device for water supply and drainage pipe network according to any one of claims 5-7.
9. A water supply and drainage pipe network distributed optical fiber real-time monitoring device, which is characterized by comprising the water supply and drainage pipe network distributed optical fiber real-time monitoring device according to any one of claims 1 to 7.
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| CN202221176231.4U CN218822736U (en) | 2022-05-07 | 2022-05-07 | Water supply and drainage pipe network distributed optical fiber real-time monitoring device, equipment and electronic product |
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| CN202221176231.4U CN218822736U (en) | 2022-05-07 | 2022-05-07 | Water supply and drainage pipe network distributed optical fiber real-time monitoring device, equipment and electronic product |
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