CN110992619A - Electric power tunnel anti-intrusion device and detection method thereof - Google Patents
Electric power tunnel anti-intrusion device and detection method thereof Download PDFInfo
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- CN110992619A CN110992619A CN201911159605.4A CN201911159605A CN110992619A CN 110992619 A CN110992619 A CN 110992619A CN 201911159605 A CN201911159605 A CN 201911159605A CN 110992619 A CN110992619 A CN 110992619A
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- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000012544 monitoring process Methods 0.000 claims abstract description 57
- 230000007123 defense Effects 0.000 claims abstract description 47
- 230000003287 optical effect Effects 0.000 claims abstract description 47
- 238000012360 testing method Methods 0.000 claims abstract description 19
- 230000009194 climbing Effects 0.000 claims abstract description 12
- 239000011159 matrix material Substances 0.000 claims abstract description 9
- 239000011888 foil Substances 0.000 claims abstract description 8
- 239000013307 optical fiber Substances 0.000 claims description 9
- 230000004044 response Effects 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 5
- 230000000007 visual effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
- G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/10—Mechanical actuation by pressure on floors, floor coverings, stair treads, counters, or tills
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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Abstract
The invention discloses an electric power tunnel anti-intrusion device and a detection method thereof, wherein the electric power tunnel anti-intrusion device comprises the following steps: arranging an infrared monitor at the civil air defense hole of the electric power tunnel; installing grating optical cable strain gauges at climbing points and supporting points of key points of the electric power tunnel; adding a section of test unit light on each grating optical cable strain gauge; connecting the infrared monitor and the light of the test unit with a monitoring host; when close monitoring is required within a certain range, a plurality of measuring parts or measuring ranges are connected in series through optical cables to form a matrix network, and the matrix network is adhered or pre-embedded at the entrance and exit of a tunnel civil air defense hole to carry out external force detection, so that the entrance condition of an external object is monitored; tunnel civil air defense is downthehole to be provided with tunnel support frame and climbing step, is provided with the step handle on the climbing step, and the step is provided with grating optical cable foil gage on hand, and grating optical cable foil gage is connected with monitoring host after passing through the optical cable series connection. The invention has high monitoring accuracy and reduces the conditions of low recognition rate and false alarm.
Description
Technical Field
The present invention relates to an anti-intrusion device and a detection method thereof, and more particularly, to an anti-intrusion device for a power tunnel and a detection method thereof.
Background
Along with the continuous expansion of the power grid scale, the laying length of power cables is longer and longer, the development of cities is more and more intelligent, an underground comprehensive pipe gallery bears the transmission of information and energy, an underground high-speed network of a future city is formed at the same time, harsh working environments in the pipe gallery are complicated facilities, the traditional security work cannot meet safe operation and maintenance and disaster emergency work gradually, the underground comprehensive pipe gallery is longer and longer in construction, places needing ventilation and security manholes to the outside are more, the traditional pipeline monitoring is completed by installing infrared detection equipment, the monitoring belongs to point range monitoring, once an object blocks an infrared signal, a detection signal is sent, the form is single, and the phenomena of false reporting and missing reporting are easy to occur.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the device and the method overcome the defects of the prior art and provide the electric power tunnel anti-intrusion device which has various detection signal forms and is not easy to have the phenomena of false alarm and missed alarm.
The technical scheme adopted by the invention for solving the technical problem is as follows:
an anti-intrusion detection method for a power tunnel comprises the following steps:
s1: an infrared monitor is arranged at the position of the civil air defense hole of the electric power tunnel and used for monitoring the space around the civil air defense hole in a range.
S2: and installing grating optical cable strain gauges at climbing points and supporting points of key points of the electric power tunnel, and judging whether foreign objects or people try to enter the tunnel through the civil air defense holes of the tunnel.
And S3, adding a section of test unit light on each grating optical cable strain gauge, and monitoring whether the grating optical cable strain gauge generates mechanical deformation or not in a photoelectric conversion mode.
S4: and connecting the infrared monitor and the light of the test unit with the monitoring host.
S5: when close monitoring is required to be carried out within a certain range, a plurality of measuring parts or measuring ranges are connected in series through optical cables to form a matrix network, and external force detection is carried out by adhering or pre-embedding the matrix network at the entrance and exit of the tunnel civil air defense hole, so that the entering condition of external objects is monitored.
S6: when no external object passes through the tunnel civil air defense hole, no external pressure is applied on the grating optical cable strain gauge, namely no person or other objects stand or step on the grating optical cable strain gauge, the response time of the light of the test unit detected by the monitoring host passing through the optical fiber is not changed, the light beam is not refracted, or the loss ratio of the refractive index is small, and the infrared monitor is combined to form a three-dimensional foreign object intrusion detection function, so that no external object can be considered to pass in and out of the electric power tunnel through the tunnel civil air defense hole.
S7: if the monitoring host detects that the response time of the light of the test unit passing through the optical fiber is shortened or lengthened, the light beam is refracted, and the infrared monitor is combined to form a three-dimensional foreign object intrusion detection function, it can be proved that a foreign object is entering and exiting the tunnel through the civil air defense wellhead of the tunnel.
The infrared monitor comprises two infrared ray tubes which are respectively and symmetrically distributed on two sides of the entrance of the civil air defense hole of the electric power tunnel to perform infrared correlation.
The monitoring host is connected with an alarm and a light emitting diode which trigger sound and light alarm when the monitoring host monitors that foreign objects enter the tunnel hole, and is connected with the handheld terminal in a wireless mode and sends information to the handheld terminal in a wireless mode.
The handheld terminal comprises a mobile phone and a computer.
The utility model provides an electric power tunnel anti-intrusion device, includes tunnel passageway and monitoring host, be provided with tunnel civil air defense hole on the tunnel passageway, tunnel support frame and climbing step are provided with in the tunnel civil air defense hole set up infrared monitor on the tunnel support frame of tunnel civil air defense hole entrance, infrared monitor with monitoring host connects, be provided with the step handle on the climbing step, be provided with grating optical cable foil gage on the step handle, grating optical cable foil gage pass through the optical cable establish ties the back with monitoring host connects.
The infrared monitor comprises two infrared ray tubes which are respectively and symmetrically distributed on two sides of the entrance of the tunnel civil air defense hole to perform infrared correlation.
The grating optical cable strain gauge is further arranged on the tunnel support frame inside the tunnel civil air defense hole and is connected with the monitoring host through an optical cable.
The monitoring host is connected with an alarm and a light emitting diode which trigger audible and visual alarm when the monitoring host monitors that foreign objects enter the tunnel hole, the monitoring host is connected with the handheld terminal in a wireless mode and sends information to the handheld terminal in a wireless mode, and the handheld terminal comprises a mobile phone and a computer.
The fiber grating strain gauge is an element for measuring strain, which is composed of a sensitive grid and the like, the working principle of the fiber grating strain gauge is manufactured based on the strain effect, namely when a conductor or a semiconductor material generates mechanical deformation under the action of external force, the reflected wavelength of the conductor or the semiconductor material also changes correspondingly, the phenomenon is called as the strain effect,
optical strain gages are typically made using bragg grating glass fibers no larger than 4-9 microns in diameter, typically 60-80 microns in diameter for human hair, with the fiber core surrounded by a pure glass cladding of approximately 125 microns in diameter.
The strain gauge based on the Bragg grating has the following advantages: 1. is insensitive to electromagnetic fields; 2. can be used in potentially explosive environments; 3. under the condition of high vibration load, the material (glass) cannot generate faults; 4. larger strain can be measured, the maximum strain of a general fiber grating strain gauge is hundreds of microstrain, and the measurable maximum strain of an optical strain gauge is 7000 microstrain; 5. fewer connecting lines, and thus less disturbance to the test object; 6. the interconnection requires a large number of sensors and different bragg wavelengths can be integrated in one optical fiber.
Drawings
FIG. 1 is a schematic flow chart of an anti-intrusion device for an electric power tunnel and a detection method thereof according to the present invention;
FIG. 2 is a structural connection diagram of the electric tunnel intrusion prevention device and the detection method thereof according to the present invention;
FIG. 3 is a diagram of a path of a refracted light ray of a test unit light ray in the electric power tunnel intrusion prevention device and the detection method thereof according to the present invention;
fig. 4 is a photoelectric conversion circuit diagram of the electric power tunnel intrusion prevention device and the detection method thereof according to the present invention.
Detailed Description
The invention will be further explained and explained with reference to the drawings and the specific embodiments:
referring to fig. 1, 2, 3 and 4: in the figure, 1-electric power tunnel civil air defense hole, 2-infrared monitor, 3-step ladder handle and 4-grating optical cable.
Example (b): an anti-intrusion detection method for a power tunnel comprises the following steps:
s1: an infrared monitor 2 is arranged at the civil air defense hole 1 of the electric power tunnel and used for monitoring the space around the civil air defense hole within a range.
S2: and installing grating optical cable strain gauges at climbing points and supporting points of key points of the electric power tunnel, and judging whether foreign objects or people try to enter the tunnel through the civil air defense holes of the tunnel.
And S3, adding a section of test unit light on each grating optical cable strain gauge, and monitoring whether the grating optical cable strain gauge generates mechanical deformation or not in a photoelectric conversion mode.
S4: the infrared monitor 2 and the light of the test unit are connected with the monitoring host.
S5: when needing to carry out close monitoring in certain extent, concatenate a plurality of measuring position or measuring range through optical cable 4, form the matrix network to paste or pre-buried carry out external force detection at tunnel people's air defense hole 1's access & exit department, thereby monitor the entering condition of external object.
S6: when no external object passes through the tunnel civil air defense hole 1, no external pressure is applied on the grating optical cable strain gauge, namely no person or other object stands or steps on the grating optical cable strain gauge, the response time of the light of the test unit detected by the monitoring host passing through the optical fiber is not changed, the light beam is not refracted, or the loss ratio of the refractive index is small, and the infrared monitor 2 is combined to form a three-dimensional foreign object intrusion detection function, so that no external object can be considered to pass in and out of the electric power tunnel through the tunnel civil air defense hole 1.
S7: if the monitoring host detects that the response time of the light of the test unit passing through the optical fiber is shortened or lengthened, the light beam is refracted, and the infrared monitor 2 is combined to form a three-dimensional foreign object intrusion detection function, it can be proved that a foreign object is entering and exiting the tunnel through the civil air defense wellhead of the tunnel.
The infrared monitor 2 comprises two infrared ray tubes which are respectively symmetrically distributed on two sides of the entrance of the civil air defense hole 1 of the electric power tunnel to carry out infrared correlation.
The monitoring host is connected with an alarm and a light emitting diode which trigger sound and light alarm when the monitoring host monitors that foreign objects enter the tunnel hole, and the monitoring host is connected with the handheld terminal in a wireless mode and sends information to the handheld terminal in a wireless mode.
The handheld terminal comprises a mobile phone and a computer.
The utility model provides an electric power tunnel prevents intrusion device, including tunnel passageway and monitoring host, be provided with tunnel people's air defense hole 1 on the tunnel passageway, be provided with tunnel support frame and climbing step in the tunnel people's air defense hole 1, set up infrared monitor 2 on the tunnel support frame of tunnel people's air defense hole 1 entrance, infrared monitor 2 is connected with monitoring host, be provided with step handle 3 on the climbing step, be provided with grating optical cable foil gage on step handle 3, grating optical cable foil gage passes through the optical cable 4 and is connected with monitoring host after establishing ties.
The infrared monitor 2 comprises two infrared ray tubes which are respectively symmetrically distributed on two sides of the entrance of the tunnel civil air defense hole 1 to carry out infrared correlation.
The grating optical cable strain gauge is also arranged on a tunnel support frame inside the tunnel civil air defense hole 1 and is connected with the monitoring host through an optical cable 4.
The monitoring host is connected with an alarm and a light emitting diode which trigger sound and light alarm when the monitoring host monitors that foreign objects enter the tunnel hole, the monitoring host is connected with the handheld terminal in a wireless mode and sends information to the handheld terminal in a wireless mode, and the handheld terminal comprises a mobile phone and a computer.
The scheme of the invention is that the optical strain gauge conductor has a certain refractive index, the refractive index of the material describes how much light is bent or refracted when passing through the material, when the shape of the grating changes due to strain, the refractive index of the grating also changes, a test unit light is added to one section of the grating optical cable 4, and the equipment monitoring host converts the measurement of the light intensity signal into the measurement of the voltage signal by adopting a photoelectric conversion mode.
When no external object passes through the tunnel civil air defense hoistway, no external pressure is applied to the grating optical cable 4, namely no person or other objects stand or step on the grating optical cable 4, the response time of the light of the test unit detected by the monitoring host passing through the optical fiber is not changed, the light beam is not refracted, or the loss ratio of the refractive index is small, and then the situation that no external object passes through the tunnel civil air defense wellhead to enter and exit the electric power tunnel can be considered; if the equipment monitoring host detects that the response time of the light of the test unit passing through the optical fiber is shortened or lengthened, the light beam is refracted, and it can be proved that an external object is passing in and out of the tunnel through the civil air defense wellhead of the tunnel.
When close monitoring is required within a certain range, a plurality of measuring parts or measuring ranges are connected in series through the optical cable 4 to form a matrix network, and the matrix network is adhered or embedded at the entrance and exit of the tunnel civil air defense net for external force detection, so that the entrance condition of external objects is monitored, and a three-dimensional foreign object intrusion detection function is formed by combining an infrared ray monitor.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (8)
1. An anti-intrusion detection method for a power tunnel comprises the following steps:
s1: arranging an infrared monitor at the civil air defense hole of the electric power tunnel, and performing a range monitoring on the space around the civil air defense hole;
s2: installing grating optical cable strain gauges at climbing points and supporting points of key points of the electric power tunnel, and judging whether foreign objects or people try to enter the tunnel through the civil air defense holes of the tunnel;
s3, adding a section of test unit light on each grating optical cable strain gauge, and monitoring whether the grating optical cable strain gauge generates mechanical deformation or not in a photoelectric conversion mode;
s4: connecting the infrared monitor and the light of the test unit with a monitoring host;
s5: when close monitoring is required within a certain range, a plurality of measuring parts or measuring ranges are connected in series through optical cables to form a matrix network, and the matrix network is adhered or pre-embedded at the entrance and exit of a tunnel civil air defense hole to carry out external force detection, so that the entrance condition of an external object is monitored;
s6: when no external object passes through the tunnel civil air defense hole, no external pressure is applied on the grating optical cable strain gauge, namely no person or other object stands or steps on the grating optical cable strain gauge, the response time of the light of the test unit detected by the monitoring host passing through the optical fiber is not changed, the light beam is not refracted, or the loss ratio of the refractive index is small, and the infrared monitor is combined to form a three-dimensional foreign object intrusion detection function, so that no external object can be considered to pass in and out of the electric power tunnel through the tunnel civil air defense hole;
s7: if the monitoring host detects that the response time of the light of the test unit passing through the optical fiber is shortened or lengthened, the light beam is refracted, and the infrared monitor is combined to form a three-dimensional foreign object intrusion detection function, it can be proved that a foreign object is entering and exiting the tunnel through the civil air defense wellhead of the tunnel.
2. The electric power tunnel intrusion detection method according to claim 1, wherein: the infrared monitor comprises two infrared ray tubes which are respectively and symmetrically distributed on two sides of the entrance of the civil air defense hole of the electric power tunnel to perform infrared correlation.
3. The electric power tunnel intrusion detection method according to claim 1, wherein: the monitoring host is connected with an alarm and a light emitting diode which trigger sound and light alarm when the monitoring host monitors that foreign objects enter the tunnel hole, and is connected with the handheld terminal in a wireless mode and sends information to the handheld terminal in a wireless mode.
4. The electric power tunnel intrusion detection method according to claim 3, wherein: the handheld terminal comprises a mobile phone and a computer.
5. The utility model provides an electric power tunnel prevents intrusion device, includes tunnel channel and monitoring host computer, characterized by: be provided with tunnel civil air defense hole on the tunnel passageway, tunnel support frame and climbing step are provided with in the tunnel civil air defense hole set up infrared monitor on the tunnel support frame of tunnel civil air defense hole entrance, infrared monitor with the monitoring host connects, be provided with the step handle on the climbing step, be provided with grating optical cable foil gage on the step handle, grating optical cable foil gage pass through the optical cable establish ties after with the monitoring host connects.
6. The electric power tunnel intrusion prevention device of claim 5, wherein: the infrared monitor comprises two infrared ray tubes which are respectively and symmetrically distributed on two sides of the entrance of the tunnel civil air defense hole to perform infrared correlation.
7. The electric power tunnel intrusion prevention device of claim 5, wherein: the grating optical cable strain gauge is further arranged on the tunnel support frame inside the tunnel civil air defense hole and is connected with the monitoring host through an optical cable.
8. The electric power tunnel intrusion detection method according to claim 5, wherein: the monitoring host is connected with an alarm and a light emitting diode which trigger audible and visual alarm when the monitoring host monitors that foreign objects enter the tunnel hole, the monitoring host is connected with the handheld terminal in a wireless mode and sends information to the handheld terminal in a wireless mode, and the handheld terminal comprises a mobile phone and a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911159605.4A CN110992619A (en) | 2019-11-22 | 2019-11-22 | Electric power tunnel anti-intrusion device and detection method thereof |
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| CN201911159605.4A CN110992619A (en) | 2019-11-22 | 2019-11-22 | Electric power tunnel anti-intrusion device and detection method thereof |
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| CN210924822U (en) * | 2019-11-22 | 2020-07-03 | 郑州祥和集团有限公司 | Anti-invasion device for electric power tunnel |
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2019
- 2019-11-22 CN CN201911159605.4A patent/CN110992619A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090269001A1 (en) * | 2005-10-10 | 2009-10-29 | Geumsuk Lee | Apparatus and Method for Detecting Intrusion by Using Fiber Bragg Grating Sensor |
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Application publication date: 20200410 |