CN207397439U - A kind of anti-external force of high-tension line destroys intelligent caution system - Google Patents

A kind of anti-external force of high-tension line destroys intelligent caution system Download PDF

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Publication number
CN207397439U
CN207397439U CN201720942876.7U CN201720942876U CN207397439U CN 207397439 U CN207397439 U CN 207397439U CN 201720942876 U CN201720942876 U CN 201720942876U CN 207397439 U CN207397439 U CN 207397439U
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module
alarm
shell
voltage
voltage line
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王付杰
张辉
陈红卫
李帅
安永伟
陈幸伟
李松涛
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LUOHE POWER SUPPLY COMPANY STATE GRID HENAN ELECTRIC POWER Co Ltd
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LUOHE POWER SUPPLY COMPANY STATE GRID HENAN ELECTRIC POWER Co Ltd
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Abstract

The utility model provides a kind of anti-external force of high-tension line and destroys intelligent caution system, including on-site terminal and monitor supervision platform, the on-site terminal includes the housing for the spheroidal being arranged on high-tension line, the housing corresponds to the high-tension line and sets retention mechanism, communication module is set above the housing, the lower section of the housing sets monitoring modular and alarm module, control module and the corresponding high-tension line is set to set and take energy module to what live modules were powered in the housing, the utility model substantially increases construction site, the external force such as scissors crossing destroy the transmission line safety operation level in the region that takes place frequently, reduce the influence having a power failure to industry and life, it can effectively prevent machinery equipment damage and casualties caused by short by mistake.

Description

Intelligent warning system for preventing external damage of high-voltage line
Technical Field
The utility model relates to a transmission line protection technical field, concretely relates to external damage intelligent warning system is prevented to high tension line.
Background
In recent years, the rapid development of electric power, the electric network is more and more dense, and with the increasing demand of electricity consumption in various places, high-voltage transmission lines are distributed in cities and villages. The voltage of the high-voltage transmission line is as high as tens of thousands of volts or even hundreds of thousands of volts, and the high-voltage transmission line can cause human fatality even if not directly contacted, so that the high-voltage transmission line is very dangerous. The higher the voltage, the greater the risk to humans. The intensive lines cause pedestrians, vehicles and the like to pass at night, malignant accidents are often caused by insufficient defense, the lines lack of warning, and equipment technology lags behind, so that the intensive lines are the important reasons for the occurrence of high-voltage accidents.
Meanwhile, due to the rapid development of national economy, the construction of numerous high-rise buildings caused by high-speed rail construction, highway construction, bridge construction and urbanization, the construction sites can be seen everywhere due to the construction of multiple roads and the like. Due to the increase of construction and road construction, large mechanical vehicles such as cranes and excavators are inevitably frequently used. Large vehicles pose a threat to the safe operation of power lines. According to the recorded statistics, the accidents caused by the fact that construction cranes and other transportation vehicles cut and collide the power transmission lines and related equipment account for over 50 percent, and the accidents mostly occur at night. According to national statistical data, the external force damage accidents are mostly caused by cranes, tower cranes and concrete pump trucks, and can account for more than 60% of overhead line accidents. Particularly, during night construction, line tripping accidents occur frequently due to the fact that constructors cannot clearly see the specific positions of the high-voltage conductors, and account for about 70-80% of external accidents.
In addition, the rapid development of traffic is that China has become a big automobile country, the concentration of high-voltage lines and the concentration of traffic become contradictions, and the concentrated lines and the concentrated vehicles cause safety accidents often caused by the fact that front electric lines cannot be found in time at night.
The power accident frequently occurs, besides the safety consciousness of constructors is low, the power department also needs to strengthen the management of circuits, high-voltage wire protection safety warning lamps need to be installed on circuits in an accident area where tripping easily occurs and a key turnout area, and a construction unit is required to install a near-electricity alarm on tall equipment such as large-scale construction vehicles, tower cranes, excavators, concrete pumping vehicles, overhead working vehicles and hoisting machines for danger reminding, so that the safe construction operation is guaranteed.
Utility model No. 104392581A provides a high tension line prevents external damage laser monitoring early warning system, include: the laser alarm control host comprises a laser ranging module, an analysis module and a communication module; the laser probe is connected with the laser alarm control host, emits laser rays to measure the distance of an external object and feeds distance measurement information back to the laser alarm control host; the alarm is connected with the analysis module and sends an alarm signal when the analysis result of the analysis module on the distance value is abnormal; the remote video monitoring unit is connected with the laser alarm control host, carries out external force damage dangerous case patrol on a monitored area and feeds patrol information back to the laser alarm control host; and the background monitoring center is connected with the laser alarm control host, receives and displays the abnormal result and informs monitoring personnel to process the abnormal result through the communication module. However, laser ranging requires attention to human safety, is difficult to manufacture and high in cost, an optical system needs to be kept clean, and otherwise measurement is affected, so that the wide application of the laser ranging is affected.
Utility model No. 105427516A discloses a high tension line prevents external damage laser detection early warning system, and its constitution includes: solar power supply box (1), solar power supply box be connected with support frame (2), the support frame be connected with loudspeaker (3), alarm (4), laser detector (9), mounting bracket (5) respectively, the mounting bracket be connected with infrared camera protective housing (7), infrared camera protective housing be connected with infrared camera (8). The application also adopts a laser detector, and has a plurality of defects.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a high voltage transmission lines prevents external damage intelligent warning system solves among the prior art high voltage transmission lines and prevents that external damage warning device cost is too high, should not promote and the problem of function singleness.
For solving the technical problem, the utility model provides a high tension line prevents external damage intelligence warning system, including field terminal and monitor platform, field terminal is including setting up the spherical casing on high tension line, the casing corresponds high tension line sets up fastening device, the casing top sets up communication module, the below of casing sets up monitoring module and alarm module, set up control module and correspondence in the casing high tension line sets up the energy-taking module that supplies power to each module in scene, control module with monitoring module, alarm module and communication module signal connection, monitor platform include with communication module signal connection's industrial computer.
Furthermore, the control module adopts a single chip microcomputer, and the communication module adopts a GPRS module.
Furthermore, the alarm module adopts an audible and visual alarm.
Furthermore, the energy taking module comprises an energy taking coil, a rectifying and filtering circuit, an energy taking power adjusting module, a voltage stabilizing module, a charging module and a super capacitor set which are sequentially connected, wherein the voltage stabilizing module and the super capacitor set are respectively connected with a boosting output circuit, the boosting output circuit is connected with a monitoring module, an alarm module, a control module and a communication module, and the energy taking coil corresponds to the high-voltage circuit.
Furthermore, the monitoring module comprises a plurality of ultrasonic sensors.
Furthermore, ultrasonic sensor is four, four the ultrasonic sensor equipartition sets up on the same level of the lower surface of casing, run through the straight line of the centre of a circle of ultrasonic sensor and casing and the straight line contained angle that runs through the lowermost end of casing and the centre of a circle are forty-five degrees.
Furthermore, the casing includes upper casing and lower casing, the edge of upper casing and lower casing sets up the engaging lug, set up the screw hole on the engaging lug, upper casing corresponds high-voltage line sets up semicircular upper perforation, lower casing corresponds high-voltage line sets up semicircular lower perforation, upper perforation and lower perforation cooperate to constitute the through-hole that supplies high-voltage line to pass.
Furthermore, fastening device includes upper fixed plate and the bottom plate that corresponds the high-tension line setting between two through-holes, upper fixed plate and bottom plate with the shape of high-tension line agrees with mutually, the lower surface of upper fixed plate and the upper surface of bottom plate correspond the high-tension line sets up fixed thorn protrudingly.
The intelligent warning method for preventing the external force damage of the high-voltage line comprises the following steps:
s1, installing a plurality of field terminals on the high-voltage line, wherein the field terminals are uniformly distributed along the high-voltage line;
s2, the alarm module on the field terminal flashes at night to warn surrounding vehicles and people that power transmission conductors are arranged above the vehicles and the people; the flashing is closed in the daytime, and warning is carried out through the warning color on the outer surface of the shell;
s3, setting an alarm threshold value for an ultrasonic sensor arranged on the field terminal, when the ultrasonic sensor monitors that the distance between an object and a high-voltage line is smaller than the threshold value, controlling an alarm module to warn by a control module, sending alarm information to a monitoring platform through a communication module, and carrying out key monitoring on the line by the monitoring platform;
s4, the monitoring platform stores maintenance attendant information corresponding to the high-voltage line, and sends the alarm information to the maintenance attendant after receiving the alarm information;
and S5, the field terminals arranged on the same high-voltage line are communicated with each other through the Lora communication technology, and when a certain field terminal sends alarm information to the monitoring platform, the Lora communication module sends the alarm information to other field terminals on the same high-voltage line at the same time.
Further, the alarm threshold is optimized, and the setting of the alarm threshold is regarded as an optimization problem, which is described as follows:
the algorithm comprises the following steps:
first step, intervalTwo points of structure
In the second step, ifThen the search interval is reduced toJudgment ofIf yes, turning to the fourth step, otherwise returning to the first step;
in the third step, ifThen the search interval is reduced toJudgment ofIf yes, turning to the fourth step, otherwise returning to the first step;
the fourth step, the optimal solution isMinimum value of the objective function of
The utility model provides a high tension line prevents external damage intelligence warning system, this system includes field terminal and monitor platform, field terminal is including setting up the spherical casing on high tension line, the casing corresponds high tension line and sets up fastening device, the casing top sets up communication module, the below of casing sets up monitoring module and alarm module, set up control module in the casing and correspond the high tension line setting and carry out the energy of getting that supplies power to each module in scene and can the module, control module and monitoring module, alarm module and communication module signal connection, monitor platform includes the industrial computer with communication module signal connection. The field terminal utilizes the wire electromagnetic field to self-excite to obtain electricity, detects the intrusion behavior of the lower area in real time, gives out sound and light alarm to the behavior which is within the intrusion safe distance, and reports the sound and light alarm to the background. The monitoring platform adopts an advanced Internet of things cloud platform technology, can process alarm information in time and pushes the alarm information to mobile phones of related personnel, so that the workers can check the field condition in time and correspondingly process the external force invasion. The fastening mechanism fixes the shell on a high-voltage line, and the shell is prevented from sliding or falling under the condition of strong wind, so that equipment is prevented from being damaged or the monitoring effect is poor. The energy taking module obtains a power supply through an iron core clamped on the lead, and rectifies and outputs the power supply into a direct-current power supply; the monitoring module adopts a plurality of groups of remote ultrasonic sensors to detect the lower area in real time; the alarm module can automatically flash at a set frequency at night, and can send out strong flash and voice calling alarm when the intrusion detection is triggered; the communication module is mainly responsible for uploading alarm information through a GPRS network, a video monitoring device can be arranged on site, and the Lora short-distance communication module is linked with the video monitoring device.
The field terminal adopts a self-induction power supply technology, does not need an external power supply and directly obtains the power supply from a lead. When the current of the wire is larger than the lowest working current of the equipment, the equipment can work normally. The independent power supply control circuit and the power-saving algorithm are adopted for various different load units in the device, so that the running condition of the device is matched with the power of self-induction power supply and the current of a lead. When the current of the lead is large enough, enough power can be obtained, the full-load operation of the equipment is met, and energy storage is carried out simultaneously; when the current of the lead is small, a part of the load is turned off or dormant, and the energy storage unit supplies power in a supplementing way if necessary; and when the wire has no current, all loads are turned off, and the low-power-consumption standby state is entered.
The utility model discloses an advance survey sensing technology, wireless ad hoc network technique, self-induction get electric technology, thing networking cloud platform technique, can carry out long-term, real-time supervision to the high tension transmission line's of operation situation in the adverse circumstances, prevent outer broken early warning. The system can automatically identify and warn the intrusion of dangerous objects, and transmits the intrusion to a monitoring center through a wireless network to remind an operator on duty to perform manual intervention, so that the accident occurrence rate or the accident hazard is reduced to the minimum, and the safe operation level of the line is improved.
(1) Active warning and improvement of self-eye-catching degree of power transmission line
The transmission line is not obvious, is easy to be ignored by constructors and is invisible at night. After the intelligent warning device is installed, the warning color of the intelligent warning device has certain warning capability in daytime. The flashing at night can be visible beyond 800 meters, and the flashing of a plurality of warning devices can clearly indicate the existence and the trend of the lead, so that dangerous vehicles and construction machinery can find the existence of the lead as soon as possible.
(2) Uninterrupted intrusion detection and timely prevention of dangerous objects from intruding into the safety distance of the wire
The intelligent warning device can continuously scan and detect the area under the line for 24 hours, and can immediately send out an alarm signal as long as a dangerous object intrudes, so that sound and light warning is carried out on destructive behaviors. Compare traditional video monitoring mode, want more sensitive and swift, can effectively prevent external force invasion action, protection power line's safety.
(3) High-strength alarm signal for effectively preventing external damage
Intelligent warning device has adopted hi-lite LED lamp pearl and high decibel warning loudspeaker, when detecting the external force invasion, can carry out quick highlight scintillation to pronunciation are recorded in the broadcast: danger of high pressure, Do not approach! And construction operators are reminded, and the artificial intrusion and damage are effectively prevented.
Drawings
Fig. 1 is the utility model discloses external damage intelligent warning system's system structure picture is prevented to high tension line.
Fig. 2 is a schematic structural diagram of the field terminal of the present invention;
fig. 3 is a system structure diagram of the energy-taking module of the present invention;
fig. 4 is a schematic structural view of the housing of the present invention;
fig. 5 is a schematic structural diagram of the fastening mechanism of the present invention.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
An embodiment, as shown in fig. 1-3, the utility model provides a high tension line prevents external damage intelligent warning system, including field terminal and monitoring platform 1, field terminal is including setting up the spherical casing 10 on high tension line 7, casing 10 corresponds high tension line 7 sets up fastening device 8, casing 10 top sets up communication module 2, casing 10's below sets up monitoring module 5 and alarm module 6, set up control module 4 and correspondence in the casing 10 high tension line 7 sets up the energy of getting module 3 that supplies power to each module in scene, control module 4 with monitoring module 5, alarm module 6 and communication module 2 signal connection, monitoring platform 1 include with communication module 2 signal connection's industrial computer.
The control module 4 adopts a single chip microcomputer, and the communication module 2 adopts a GPRS module.
And the alarm module 6 adopts an audible and visual alarm.
The energy taking module 3 comprises an energy taking coil 13, a rectifying and filtering circuit 14, an energy taking power adjusting module 15, a voltage stabilizing module 16, a charging module 17 and a super capacitor bank 18 which are sequentially connected, the voltage stabilizing module 16 and the super capacitor bank 18 are respectively connected with a boosting output circuit 19, the boosting output circuit 19 is connected with a monitoring module 5, an alarm module 6, a control module 4 and a communication module 2, and the energy taking coil 13 corresponds to the high-voltage circuit 7.
Monitoring module 5 includes ultrasonic sensor, ultrasonic sensor is four, four the ultrasonic sensor equipartition sets up on the same level of the lower surface of casing 10, run through the straight line of the centre of a circle of ultrasonic sensor and casing 10 and the straight line contained angle that runs through casing 10's the lower extreme and the centre of a circle are forty-five degrees.
Example two
As shown in fig. 4 and 5, the present embodiment is different from the first embodiment in that:
the casing 10 comprises an upper casing 20 and a lower casing 21, wherein connecting lugs 22 are arranged on the edges of the upper casing 20 and the lower casing 21, threaded holes 23 are formed in the connecting lugs 22, the upper casing 20 is provided with semicircular upper through holes 24 corresponding to the high-voltage line 7, the lower casing 21 is provided with semicircular lower through holes 26 corresponding to the high-voltage line 7, and the upper through holes 24 and the lower through holes 26 are matched to form through holes 25 for the high-voltage line 7 to pass through. The shell is fixed on a high-voltage line through the butt joint of the upper shell and the lower shell, the installation of the field terminal is completed, the upper shell and the lower shell are fixed through the connecting lugs, and the operation is convenient.
The fastening mechanism comprises an upper fixing plate 27 and a lower fixing plate 28 which are arranged between the two through holes 25 and correspond to the high-voltage line 7, the upper fixing plate 27 and the lower fixing plate 28 are matched with the high-voltage line 7 in shape, and fixing stabs are arranged on the lower surface of the upper fixing plate 27 and the upper surface of the lower fixing plate 28 and correspond to the high-voltage line 7. The contact surface of casing and high-tension line is less, and fixed effect is very poor, consequently sets up upper and lower fixed plate between the through-hole, can increase the area of contact of upper and lower casing and high-tension line, and upper and lower fixed plate corresponds high-tension line sets up fixed thorn protrudingly, and fixed thorn protrudingly can adopt screw thread or frosting, increases about fixed plate and high-tension line's frictional force can.
The intelligent warning method for preventing the external force damage of the high-voltage line comprises the following steps:
s1, installing a plurality of field terminals on the high-voltage line, wherein the field terminals are uniformly distributed along the high-voltage line;
s2, the alarm module on the field terminal flashes at night to warn surrounding vehicles and people that power transmission conductors are arranged above the vehicles and the people; the flashing is closed in the daytime, and warning is carried out through the warning color on the outer surface of the shell;
s3, setting an alarm threshold value for an ultrasonic sensor arranged on the field terminal, when the ultrasonic sensor monitors that the distance between an object and a high-voltage line is smaller than the threshold value, controlling an alarm module to warn by a control module, sending alarm information to a monitoring platform through a communication module, and carrying out key monitoring on the line by the monitoring platform;
s4, the monitoring platform stores maintenance attendant information corresponding to the high-voltage line, and sends the alarm information to the maintenance attendant after receiving the alarm information;
and S5, the field terminals arranged on the same high-voltage line are communicated with each other through the Lora communication technology, and when a certain field terminal sends alarm information to the monitoring platform, the Lora communication module sends the alarm information to other field terminals on the same high-voltage line at the same time.
Most of the current intrusion detection alarm systems have the problems of large alarm quantity, false alarm or invalid alarm, and the like, and one main reason of the problem is the unreasonable setting of parameter alarm threshold values, and if the alarm threshold values are too large, some important alarms can be missed; conversely, a threshold value that is too small may cause excessive false alarms, and these problems may be particularly acute in a multi-sensor environment. In order to improve the performance of the intrusion alarm system, the alarm threshold values of the parameters of the intrusion alarm system need to be optimally set. The most common threshold setting method in practical application is 3 sigma (three times standard deviation), that is, the threshold range is defined in the interval of [ mu-3 sigma, mu +3 sigma ], and the parameter settings beyond the range are all considered as abnormal values, and an alarm is triggered.
The embodiment adopts a nuclear density estimation method to establish a functional relation expression of an alarm threshold value and false alarm probability, and provides a new method for setting a process parameter alarm threshold value, which comprises two stages of process parameter alarm state estimation and process parameter alarm threshold value optimization.
The first stage is as follows: process parameter alarm state estimation
In order to set a reasonable alarm threshold, the alarm state of the process parameter needs to be estimated first, mainly for the problems of false alarm and missed alarm.
The steps of the process parameter alarm state estimation based on the nuclear density are as follows:
firstly, preprocessing data: normalizing the original data, and limiting the data in a range of [0,1], such as:
whereinIn order to be the normalized data, the data,respectively the minimum value and the maximum value of the original data, wherein n is the number of the data;
secondly, solving the optimal window width h: the window width is an important parameter in kernel density estimation, and the size of the window width directly influences the accuracy of an estimation result. The most effective method at present is based on the idea of least square error, when the integral mean square error (MISE) is minimum, the obtained window width is optimal, and the calculation formula of the one-dimensional optimal window width is as follows:
whereinN is the number of samples;
and thirdly, estimating the probability density of the process parameters: selecting a Gaussian kernel function, estimating the probability density of the process parameters to obtain a process parameter probability density function curve, generating false alarm when part of normal data is greater than an alarm threshold, wherein the probability is the area of a part exceeding the alarm threshold under a normal distribution curve; and a part of abnormal data is smaller than the alarm threshold value and belongs to the alarm missing, and the probability of alarm missing is the area of the part, lower than the alarm threshold value, of the abnormal data distribution curve.
According to the Bayes decision theory with the minimum error rate, the probability of false alarm and false alarm can be calculated by the following expression:
wherein,is a probability density function expression of a normal state,the probability density function expression of the abnormal state is shown, and t is an alarm threshold value. It can be seen that if the alarm threshold is set too large, the probability of false alarm becomes small, and the probability of missed alarm becomes large; conversely, when the alarm threshold is set too small, the probability of false alarm occurrence increases, while the probability of missed alarm decreases.
And a second stage: process parameter alarm threshold optimization
The setting of the alarm threshold is considered as an optimization problem, and is described as follows:
the algorithm comprises the following steps:
first step, intervalTwo points of structure
In the second step, ifThen the search interval is reduced toJudgment ofIf yes, turning to the fourth step, otherwise returning to the first step;
in the third step, ifThen the search interval is reduced toJudgment ofIf yes, turning to the fourth step, otherwise returning to the first step;
the fourth step, the optimal solution isMinimum value of the objective function of
The alarm threshold algorithm is written into the intelligent warning device by programming. The designed software mainly comprises the following four modules:
the preprocessing module is mainly used for performing mathematical processing, namely normalization on the original data of the process parameters, so that the processed data can meet the requirements of the next module on the data format.
And the density estimation module is used for estimating the probability density of the process parameters by using the preprocessed data as input and applying a kernel density method to obtain a function curve of normal and abnormal states.
And the function fitting module is used for fitting a probability density function expression which accords with Gaussian distribution according to the density function curve and establishing a target function of threshold optimization.
And the threshold solving module is used for solving the objective function by using a numerical optimization method and outputting an optimal alarm threshold.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (5)

1. The utility model provides a high tension line prevents external damage intelligent warning system which characterized in that: the monitoring system comprises a field terminal and a monitoring platform, wherein the field terminal comprises a spherical shell arranged on a high-voltage line, the shell is provided with a fastening mechanism corresponding to the high-voltage line, a communication module is arranged above the shell, a monitoring module and an alarm module are arranged below the shell, a control module and an energy-taking module for supplying power to each module on the field corresponding to the high-voltage line are arranged in the shell, the control module is in signal connection with the monitoring module, the alarm module and the communication module, and the monitoring platform comprises an industrial personal computer in signal connection with the communication module; the shell comprises an upper shell and a lower shell, connecting lugs are arranged on the edges of the upper shell and the lower shell, threaded holes are formed in the connecting lugs, semicircular upper through holes are formed in the upper shell corresponding to the high-voltage line, semicircular lower through holes are formed in the lower shell corresponding to the high-voltage line, and the upper through holes and the lower through holes are matched to form through holes for the high-voltage line to pass through; the fastening mechanism comprises an upper fixing plate and a lower fixing plate which are arranged between the two through holes and correspond to the high-voltage line, the upper fixing plate and the lower fixing plate are matched with the high-voltage line in shape, and the lower surface of the upper fixing plate and the upper surface of the lower fixing plate correspond to the high-voltage line and are provided with fixing stabs.
2. The intelligent warning system for preventing external force damage of high-voltage lines as claimed in claim 1, wherein: the control module adopts a singlechip, and the communication module adopts a GPRS module.
3. The intelligent warning system for preventing external force damage of high-voltage lines as claimed in claim 1, wherein: and the alarm module adopts an audible and visual alarm.
4. The intelligent warning system for preventing external force damage of high-voltage lines as claimed in claim 1, wherein: the energy taking module comprises an energy taking coil, a rectifying and filtering circuit, an energy taking power adjusting module, a voltage stabilizing module, a charging module and a super capacitor set which are sequentially connected, wherein the voltage stabilizing module and the super capacitor set are respectively connected with a boosting output circuit, the boosting output circuit is connected with a monitoring module, an alarm module, a control module and a communication module, and the energy taking coil corresponds to the high-voltage circuit.
5. The intelligent warning system for preventing external force damage of high-voltage lines as claimed in claim 1, wherein: the monitoring module comprises a plurality of ultrasonic sensors.
CN201720942876.7U 2017-07-31 2017-07-31 A kind of anti-external force of high-tension line destroys intelligent caution system Active CN207397439U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107644501A (en) * 2017-07-31 2018-01-30 国网河南省电力公司漯河供电公司 A kind of anti-external force of high-tension line destroys intelligent caution system and method
CN111223258A (en) * 2020-01-20 2020-06-02 广州燃气集团有限公司 Sound wave monitoring and early warning system and method for monitoring third-party damage of gas pipeline

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107644501A (en) * 2017-07-31 2018-01-30 国网河南省电力公司漯河供电公司 A kind of anti-external force of high-tension line destroys intelligent caution system and method
CN111223258A (en) * 2020-01-20 2020-06-02 广州燃气集团有限公司 Sound wave monitoring and early warning system and method for monitoring third-party damage of gas pipeline

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