CN112542014A - Power cable external damage prevention system based on biological induction - Google Patents
Power cable external damage prevention system based on biological induction Download PDFInfo
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- CN112542014A CN112542014A CN202011163507.0A CN202011163507A CN112542014A CN 112542014 A CN112542014 A CN 112542014A CN 202011163507 A CN202011163507 A CN 202011163507A CN 112542014 A CN112542014 A CN 112542014A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field
- G08B13/2497—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field using transmission lines, e.g. cable
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Abstract
本申请实施例提出的基于生物感应的电力电缆防外破系统，包括用于产生感应电场的感应电缆，感应电缆设置在相邻的两个智能周界之间；与感应电缆电连接、用于接收感应电缆电势变换的处理器，以及用于接收处理器根据电压变换输出报警信息的报警模块；还包括向感应电缆、处理器以及报警模块供电的电源模块，其中，当接收到报警信息时控制智能周界拍摄感应电缆处的图像。借助感应电缆为载体的传感器产生感应电场形成立体空间的虚拟屏障，当人体进入虚拟空间屏障的范围，扰动虚拟屏障即破坏电场平衡；处理器将人体扰动虚拟屏障产生的电信号转换为报警信号，实现人体扰动空间感应电场即非接触报警的功能。
The system for preventing external breakage of a power cable based on biological induction proposed in the embodiment of the present application includes an induction cable for generating an induced electric field, and the induction cable is arranged between two adjacent intelligent perimeters; it is electrically connected to the induction cable and used for A processor for receiving the potential transformation of the induction cable, and an alarm module for receiving the processor to output alarm information according to the voltage transformation; also including a power supply module for supplying power to the induction cable, the processor and the alarm module, wherein when the alarm information is received, the control The smart perimeter takes an image at the sensing cable. The sensor with the induction cable as the carrier generates an induced electric field to form a virtual barrier of the three-dimensional space. When the human body enters the range of the virtual space barrier, disturbing the virtual barrier will destroy the balance of the electric field; the processor converts the electrical signal generated by the human body disturbing the virtual barrier into an alarm signal, Realize the function of human body disturbance space induction electric field, that is, non-contact alarm function.
Description
Technical Field
The application belongs to the field of live working, and particularly relates to a power cable external damage prevention system based on biological induction.
Background
With the continuous acceleration of urban transformation pace, the high density and large length of high-voltage cables of 35kV and above are widely applied, and the proportion of the cables in urban power grids is larger and larger. In recent years, city construction is rapidly expanded, large-scale municipal works such as subway, overhead construction and river regulation are comprehensively developed, and the situation that cables are prevented from being damaged by external force is increasingly severe; meanwhile, the social high-quality service requirement is higher and higher, external operation environments such as public opinion supervision, government supervision and the like are increasingly strict, the requirement on the power supply reliability of an urban power grid is higher and higher, meanwhile, the cable has the characteristic of concealment, the cable is difficult to find out a fault, and the timeliness of fault emergency repair cannot be guaranteed. Traditional cable and channel management cannot meet the new operating requirements of cables.
The traditional method for preventing the external force damage of the cable depends on manual regular inspection, and because the manual inspection belongs to passive protection, the construction condition near a cable channel cannot be mastered in real time; meanwhile, with the increasing number of cables in recent years, the jurisdiction area is increasingly expanded, and the daily routing inspection pressure of operators is higher and higher.
Disclosure of Invention
In order to solve the defects and shortcomings in the prior art, the application provides a power cable external damage prevention system based on biological induction, an induction electric field is generated by a sensor taking the induction cable as a carrier to form a virtual barrier of a three-dimensional space, and when a human body enters the range of the virtual barrier, the virtual barrier is disturbed, namely the electric field balance is damaged; the processor converts the electric signal generated by the human body disturbance virtual barrier into an alarm signal, and the function of non-contact alarm, namely the function of human body disturbance space induction electric field, is realized.
The utility model provides a power cable prevents outer broken system based on biological response, prevent outer broken system includes:
the induction cable is used for generating an induction electric field and is arranged between two adjacent intelligent perimeters;
the processor is electrically connected with the induction cable and used for receiving the potential transformation of the induction cable, and the alarm module is used for receiving the alarm information output by the processor according to the voltage transformation;
also comprises a power supply module for supplying power to the induction cable, the processor and the alarm module,
wherein, control intelligence perimeter and shoot the image of induction cable department when receiving alarm information.
Optionally, the induction cable comprises two cables in a double helix wound structure.
Optionally, the processor is specifically configured to:
receiving the voltage independently output by each cable in the induction cables, and calculating the voltage difference between every two cables in real time;
drawing a voltage difference value curve based on the voltage difference value, and calculating the slope of the curve in real time;
and when the obtained slope is larger than a preset value, outputting alarm information.
Optionally, in the external damage prevention system, the induction cable is connected between two adjacent intelligent perimeters by a two-wire wiring method or a three-wire wiring method.
Optionally, the two-wire wiring method includes:
the interface I is used for being connected with the first intelligent perimeter through a double-wire connector, and the interface II is used for being connected with the second intelligent perimeter through the double-wire connector;
the connector also comprises a grounding wire interface arranged between the first interface and the second interface.
Optionally, the two-wire wiring method includes:
interface one used for connecting the first intelligent perimeter through the three-wire connector, and interface two used for connecting the second intelligent perimeter through the three-wire connector;
the connector also comprises a grounding wire interface arranged between the first interface and the second interface.
The beneficial effect that technical scheme that this application provided brought is:
the sensor with the induction cable as a carrier generates an induction electric field to form a virtual barrier of a three-dimensional space, and when a human body enters the range of the virtual barrier, the virtual barrier is disturbed, namely the electric field balance is damaged; the processor converts the electric signal generated by the human body disturbance virtual barrier into an alarm signal, and the function of non-contact alarm, namely the function of human body disturbance space induction electric field, is realized.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power cable external damage prevention system based on biological induction according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a two-wire wiring method according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a three-wire wiring method according to an embodiment of the present application.
Detailed Description
To make the structure and advantages of the present application clearer, the structure of the present application will be further described with reference to the accompanying drawings.
Example one
The utility model provides a power cable prevents outer broken system based on biological response that this application embodiment provided, as shown in fig. 1, prevent outer broken system includes:
the induction cable is used for generating an induction electric field and is arranged between two adjacent intelligent perimeters;
the processor is electrically connected with the induction cable and used for receiving the potential transformation of the induction cable, and the alarm module is used for receiving the alarm information output by the processor according to the voltage transformation;
also comprises a power supply module for supplying power to the induction cable, the processor and the alarm module,
wherein, control intelligence perimeter and shoot the image of induction cable department when receiving alarm information.
In the implementation of the method, the first step of the method,
by researching and applying a power cable external damage prevention technology based on a biological induction technology, real-time monitoring of construction conditions near a cable line is achieved, on one hand, traditional passive protection is changed into active protection, external damage level is effectively improved, external damage fault tripping times are reduced, and cable power supply reliability is improved; on the other hand, the pressure of cable operators is reduced, the special patrol frequency of construction points of the operators is reduced, and great economic and social benefits are created.
The detection system based on the biological sensing technology is a novel alarm system which is different from the traditional microwave, infrared correlation, vibration cable and leakage cable in nature, and has the advantages of stable performance, strong adaptability of installation environment, simple operation and the like. By using the electromagnetic induction principle, when a human body approaches the induction cable, the electromagnetic field generated by the induction cable is changed, and the host computer immediately generates an alarm signal after detecting the change. The host can provide standard signals for the alarm host and the monitoring linkage system which receive the switching value signals to form different safety protection systems.
The biological response technique that this application embodiment provided uses the response cable as the carrier, installs the response cable all around, produces the space barrier of certain limit, reaches the enclosure space, realizes the purpose that human response space electric field produced the warning. The specific parameters are as follows:
in the specific implementation process, the intrusion alarm system front-end equipment required to be carried out comprises the following preparation steps:
1) the detector of the intrusion alarm system is free of dead angle monitoring of point positions.
2) The rate of missing report of the detector is lower than 3%, and the rate of detection of the detector is higher than 97%.
3) The distance between the blind area edge of each intrusion detector and the protection target of the system is not less than 5 meters.
4) The intrusion alarm system leakage current is <5 mA. The construction of the grounding system of the intrusion alarm system adopts the star-point joint grounding system, and the grounding resistance is less than 4 ohms.
The technical indexes for installing the biological intelligent detector specifically comprise: the support mounting needs to be vertical to the horizontal line; the distance between the supports is not less than 2 meters at most, and is set as 2 meters; the glass fiber tubes at the two ends of the bracket reach the middle of the sleeve of the bracket.
The intelligent perimeter enclosing wall needs to be provided with a power supply for power supply, a grounding wire is needed, and the grounding resistance is not more than 4 ohms. All equipment wiring must have lightning protection measures, including power supplies.
The power cable prevents outer broken system that this application embodiment provided is based on the electromagnetic induction principle, when the human body is close to the response cable, arouses the change of the electromagnetic field that the response cable produced, and the host computer detects this change after, immediately produces alarm signal. In addition, based on the biological sensing technology and the video linkage technology, the biological sensing and the video monitoring are linked to give an alarm, and intelligent monitoring is realized. The non-contact alarm function is researched, the intelligent discrimination can be carried out on organisms, small animals and non-organisms, meanwhile, the interference caused by natural climate can be isolated, and the technical bottlenecks of 'missing report, false report', 'invisible' and incapability of locking alarm information at the first time in the traditional anti-theft technology are broken through.
The power cable external damage prevention system provided by the embodiment of the application is expected to produce the following technical effects: the alarm has the functions of induction, disassembly prevention, wire breakage prevention and short circuit prevention. Has complete and definite boundary, and has the function of combining physical defense and technical defense. The biological sensing intelligent alarm system has multiple signal outputs of switching value \485\ CAN and the like, CAN be linked with other security systems, and CAN provide 128 defense area addresses for an alarm host to use through a 485 bus or a CAN bus. Intelligent monitoring: the video monitoring and the electronic map are started by the alarm signal (normally open/normally closed contact) at the first time, so that intelligent monitoring is realized. The inductor generates an induction electric field, and a space virtual barrier with the height of 20-50cm and the range of 360 degrees is formed at the top of the enclosing wall. The human body crosses the enclosing wall or contacts the virtual barrier of the inductor to generate an alarm. And (3) single-hand touch alarming: when the hand of the human body touches any alloy wire, the system immediately touches the net to alarm, and the high-voltage mode is changed. Wearing gloves, over clothes, is also effective. The system immediately alarms when the pliers touch or cut any of the probe cables and switches to high voltage mode. Approaching crossing alarm: when the sensitive threshold value is adjusted properly, the human body approaches the fence to sense and early warn, and the alarm is given immediately when the human body crosses the fence, and a high-voltage mode is changed. The alarm response speed is fast, and when the induction is invaded or damaged, the system immediately sets alarm parameters: the detector can be used for locally, quickly and randomly setting a defense area address, parameters and the like (the detection sensitivity can be set according to the specific use condition of a user); the alarm host can remotely set all parameters of the machine integrally/singly. And intelligently displaying the running state, the pulse voltage value, the working mode, the alarm state and the like of the detector. The high-voltage system adopts a differential voltage output technology, each line is provided with high-voltage pulse electricity, each line has voltage to the ground, and a voltage difference exists between two adjacent lines. The high-voltage pulse system adopts a design idea of high voltage and low energy, and does not form life hazard to human bodies and is compatible with all alarm hosts receiving switching value signals, so that multiple functions such as remote networking and the like are realized. According to the detection system with the single-hand touch/approach crossing alarm function, the entrance is deterred and blocked, so that the prevention purpose is achieved, and the crime times are reduced. The anti-interference capability is strong (insensitive to the burst electromagnetic interference in the nature, such as lightning, space ionization, electromagnetic storm, burst current and the like), the performance is stable, the false alarm rate is extremely low, the all-weather work is realized, and the influence of factors such as climate, plants, small animals and the like is avoided; under the severe weather conditions of rain, snow, strong wind, low temperature and the like, the alarm is not mistaken.
Optionally, the induction cable comprises two cables in a double helix wound structure.
In practice, two cables are typically used in the sensing cable used in the embodiments of the present application for anti-tamper detection. Because the cable demand in the actual service environment is very long, the cost of cable cost can also be reduced when satisfying actual detection demand. In addition, the two cables are arranged in a double-spiral structure, so that on one hand, the stability of the distance between the two cables is improved by means of the double-spiral structure, and the stability of the generated induction electric field is ensured. On the other hand, the relative fixation is realized by the cable, so that the use cost of other supporting materials is saved.
Optionally, the processor is specifically configured to:
receiving the voltage independently output by each cable in the induction cables, and calculating the voltage difference between every two cables in real time;
drawing a voltage difference value curve based on the voltage difference value, and calculating the slope of the curve in real time;
and when the obtained slope is larger than a preset value, outputting alarm information.
In the implementation, the mode of determining whether a person intrudes and then triggering alarm information based on the comparison between the slope of the voltage difference curve and the preset value is adopted, because the time for the electric field to change is very short when the human body crosses the induction cable, and if other small organisms intrude the induction electric field, the electric field change is also triggered, but the speed for generating the voltage change in the two situations is considered to be different, so the judgment is carried out by taking the voltage difference curve as a processing mode, and only when the slope meets the preset value of the voltage change which is different from the human body intrusion of the small animals, the alarm information is output.
Optionally, in the external damage prevention system, the induction cable is connected between two adjacent intelligent perimeters by a two-wire wiring method or a three-wire wiring method.
In practice, as shown in fig. 2, the two-wire wiring method includes:
the interface I is used for being connected with the first intelligent perimeter through a double-wire connector, and the interface II is used for being connected with the second intelligent perimeter through the double-wire connector;
the connector also comprises a grounding wire interface arranged between the first interface and the second interface.
The four BNC interfaces are feeder access ports and are in a two-wire connection method.
As shown in fig. 3, the three-wire wiring method includes:
interface one used for connecting the first intelligent perimeter through the three-wire connector, and interface two used for connecting the second intelligent perimeter through the three-wire connector;
the connector also comprises a grounding wire interface arranged between the first interface and the second interface.
The three BNC interfaces are feeder access ports and are in a three-wire connection method.
The sequence numbers in the above embodiments are merely for description, and do not represent the sequence of the assembly or the use of the components.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
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| CN202011163507.0A CN112542014A (en) | 2020-10-27 | 2020-10-27 | Power cable external damage prevention system based on biological induction |
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| CN202011163507.0A CN112542014A (en) | 2020-10-27 | 2020-10-27 | Power cable external damage prevention system based on biological induction |
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| CN112542014A true CN112542014A (en) | 2021-03-23 |
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| CN113470871A (en) * | 2021-06-25 | 2021-10-01 | 海南电网有限责任公司三亚供电局 | Power cable external-damage-prevention device based on biological induction technology |
| CN113486746A (en) * | 2021-06-25 | 2021-10-08 | 海南电网有限责任公司三亚供电局 | Power cable external damage prevention method based on biological induction and video monitoring |
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| CN113486746A (en) * | 2021-06-25 | 2021-10-08 | 海南电网有限责任公司三亚供电局 | Power cable external damage prevention method based on biological induction and video monitoring |
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Application publication date: 20210323 |
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