CN111459066A - Underground pipe network monitoring system of urban lighting facility - Google Patents
Underground pipe network monitoring system of urban lighting facility Download PDFInfo
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- CN111459066A CN111459066A CN202010286152.8A CN202010286152A CN111459066A CN 111459066 A CN111459066 A CN 111459066A CN 202010286152 A CN202010286152 A CN 202010286152A CN 111459066 A CN111459066 A CN 111459066A
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- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims description 32
- 230000002159 abnormal effect Effects 0.000 claims description 22
- 238000007781 pre-processing Methods 0.000 claims description 19
- 230000003287 optical effect Effects 0.000 claims description 6
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- 238000000034 method Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 description 7
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24029—Alarm if wrong device, apparatus is connected to control module
Abstract
The invention relates to the technical field of urban lighting, in particular to an underground pipe network monitoring system of an urban lighting facility, which comprises: the system comprises a fault detection device, a fault judgment device and a control processing device, wherein an identity identification data characteristic is arranged in the fault detection device and is used for detecting a monitoring node of a cable and obtaining test data; the fault judgment device is used for collecting the test data obtained by the fault detection device in real time and judging cable fault information and identity recognition data characteristics corresponding to the cable fault information; the fault judgment device comprises an alarm module for alarming the fault cable; and the control processing device is used for processing the cable fault information collected in the fault judging device. The invention has the functions of automatically reporting fault information and positioning the fault place after the cable has a fault, has more accurate detection result, can process the fault and can ensure the safe operation of the cable.
Description
Technical Field
The invention relates to the technical field of urban lighting, in particular to an underground pipe network monitoring system of an urban lighting facility.
Background
With the gradual advance of the infrastructure of China, the urban lighting facilities are more and more perfect. The urban lighting facilities refer to street lamp distribution rooms, transformers, distribution boxes, lamp posts, ground underground pipelines, lamps, working wells, lighting auxiliary equipment and the like which are used in urban roads (including inner roadways, residential districts, bridges, tunnels, squares, public parking lots and the like), non-ticketed parks, greenbelts and the like. In the urban lighting facilities, power transmission or signal transmission is realized through cables. Firstly, in a road lighting facility, the facility components can be divided into the following parts, namely lamp maintenance, lamp post and metal maintenance, high-pole lamp maintenance, electric wire and cable maintenance, power distribution and remote detection, control terminal maintenance and the like through different reference standards, and it can be obviously seen that different technicians are required for each type of maintenance work to operate and control. In the aspect of maintenance of electric wires and cables, geographical cables are commonly used in cities, and in urban planning, the cables are usually not exposed, most of the cables are buried underground for urban attractiveness, and meanwhile, the cables are prevented from being stolen and potential safety hazards caused by exposed cables are reduced. But bury the cable and bring certain difficult problem when the advantage because it buries underground, appear short circuit or trouble such as open circuit when the cable, wherein the cable has a considerable part to bury underground, but general cable buries underground, when lighting facilities appear inefficacy, unable during operation, if the problem that the cable leads to, then difficult accurate detection specific which section cable breaks down underground. Once the cable breaks down, the normal power supply of the lighting facility can be directly influenced, and serious loss is caused to the production and the life of people.
Common buried circuit faults now include open circuit faults, low resistance faults, and high resistance faults, where an open circuit fault is a lighting fixture with a low load capacity or a voltage that cannot be delivered to the lighting fixture; the low resistance fault is that the detected resistance is lower than the resistance value of the cable in normal operation, generally, the resistance value of a certain part of the cable is lower than ten times the resistance value of the power cable in normal operation; a high resistance voltage is a ground fault that presents a high impedance when a fault occurs, and when the insulation resistance between cables or between cables and the ground is much lower than the normal value, but greater than ten times the characteristic resistance of the cable, the cable fault is called a high resistance fault.
The prior patent document CN109342880A discloses a cable fault detection method and system, in which an electromagnetic wave emitter is disposed on a cable to be detected, and the electromagnetic wave emitter generates an electromagnetic wave with a set width and a set amplitude and sends the electromagnetic wave to the cable; and the transmitted electromagnetic waves are reflected at the fault point, and the reflected electromagnetic wave information is compared with the transmitted electromagnetic wave information to determine the fault point and the abrasion degree of the cable. The cable fault detection method based on the electromagnetic wave reflection theory can directly determine the cable fault point and the abrasion degree.
The above prior art solutions have the following drawbacks: because the cable is buried underground, when detecting, the distance between the electromagnetic wave transmitter and the cable is far, and meanwhile, the underground and other wires can interfere the detection result, so that the accurate detection is difficult to realize in the detection process by using the electromagnetic wave transmitter.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an underground pipe network monitoring system of an urban lighting facility, which has the functions of automatically reporting fault information and positioning a fault occurrence place after a cable fails, and has a relatively accurate detection result.
The above object of the present invention is achieved by the following technical solutions:
an underground pipe network monitoring system of a city lighting facility comprises a fault detection device and a fault judgment device;
each cable is provided with a plurality of monitoring nodes at intervals, the fault detection device comprises a fault indication module arranged on each monitoring node, and the fault indication module is used for acquiring test data of the cable on the monitoring nodes;
the fault judgment device comprises a data acquisition module and a data comparison module, wherein the data acquisition module is used for collecting test data obtained by each fault detection device; the data comparison module is used for comparing each test data with a preset standard data range; if the test data deviate from the standard data range, judging that the test data are abnormal, defining the monitoring node as an abnormal node when the current test data exceed the preset standard data range, further judging whether the test data of the monitoring node adjacent to the abnormal node are located in the preset standard data range, and if so, outputting cable fault information of the abnormal node; if not, outputting cable fault information of the cable section adjacent to the abnormal node; and judging to obtain the type of the cable fault information according to the specific numerical value of the deviation of the detected data from the standard data range.
By adopting the technical scheme, when the cable breaks down, the fault detection device can send test data to the fault judgment device, the alarm module in the fault judgment device can give an alarm to remind a worker that the cable breaks down, and identity identification data characteristics are provided, so that the cable fault section can be positioned according to the identity identification data characteristics, and the two fault detection devices can position the specific cable fault section as the fault detection devices are arranged on the detection nodes of the cable; the data comparison module can compare the test data with a standard data range, judge the test data, judge whether the detection nodes and the cables are abnormal or not, obtain the type of cable fault information when the cables are in fault, limit the section of the cable fault between the two detection nodes, and enable the detection result to be accurate.
The present invention in a preferred example may be further configured to: and the fault indication module and the fault judgment device are in wireless communication connection through the communication module.
By adopting the technical scheme, the fault detection device sends the test data to the fault judgment device in a wireless communication mode, the laying of lines can be reduced in the wireless communication mode, and the data transmission efficiency is improved.
The present invention in a preferred example may be further configured to: the cable fault information type comprises any one or more of short circuit, open circuit and electric leakage.
By adopting the technical scheme, the fault detection device can detect the types of cable fault information such as short circuit, electric leakage, open circuit and the like.
The present invention in a preferred example may be further configured to: the fault judgment device comprises an alarm module for alarming the fault cable; the data comparison module is electrically connected with the alarm module to output an alarm signal.
Through adopting above-mentioned technical scheme, alarm module can report to the police according to cable fault information type, reminds the staff to make the staff maintain the cable.
The present invention in a preferred example may be further configured to: the alarm module comprises any one or combination of a sound alarm, an optical alarm and a short message alarm.
Through adopting above-mentioned technical scheme, alarm signal can be sound, information or light etc. can play the signal of warning effect, and the type is abundant, can play the effect of reminding the staff from many aspects.
The present invention in a preferred example may be further configured to: the fault judgment device further comprises a display module, and the display module displays the test data, the identity recognition data characteristics, the standard data range, the cable fault information type or the alarm signal.
By adopting the technical scheme, the display module can display the test data, the identity recognition data characteristics, the standard data range, the cable fault information type or the alarm signal in an intuitive form in front of the staff, so that the staff can conveniently and comprehensively acquire the information of the cable.
The present invention in a preferred example may be further configured to: the cable fault information processing device is used for processing the cable fault information collected in the fault judging device.
Through adopting above-mentioned technical scheme, control processing apparatus can handle the cable of trouble, can play the effect of cable to a certain extent.
The present invention in a preferred example may be further configured to: the control processing device includes:
the system comprises a data comparison module, a preprocessing module and a data processing module, wherein the data comparison module is used for comparing the cable fault information types of the cable fault information types, and the cable fault information types are matched with the failure recovery schemes of the cable fault information types;
the line protection module is installed on a monitoring node of the cable and connected with the preprocessing module in a wireless communication mode.
By adopting the technical scheme, when the cable breaks down, the control processing device can call a fault repairing scheme in the preprocessing module, and the fault repairing scheme is executed through the line protection module, so that the cable is protected, and the electricity safety problem caused by electric leakage and short circuit is reduced.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the fault detection device is internally provided with identity recognition data characteristics and can detect the cable, and the detection result is more accurate by sending the test data and the identity recognition data characteristics to the fault judgment device;
2. the fault judgment device can judge short circuit or open circuit, compare the short circuit or the open circuit through the data comparison module, and display a reinforcement result on the display module, so that a worker can conveniently observe the abnormal condition of the cable in time, and a certain effect of preventing the cable fault is achieved;
3. the control processing device is used for processing the failed cable, so that the damage caused by the cable failure is reduced, and the safe operation of the cable can be guaranteed;
4. the preprocessing module of the system processing device stores a plurality of sets of fault repairing schemes, when a cable breaks down, the line protection module can process the broken cable in time, the response of the processing is rapid, and the risk caused by the damage of the cable can be reduced in time.
Drawings
Fig. 1 is a schematic overall structure diagram of an underground pipe network monitoring system of a city lighting facility according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a monitoring node of a cable according to an embodiment of the present invention.
In the figure, 1, a failure detection device; 11. a fault indication module; 111. a failure detection unit; 112. a data reading unit; 113. a data transmitting/receiving unit; 12. a communication module; 121. a signal transceiving unit; 122. a wireless communication unit; 2. a failure judgment device; 21. a data acquisition module; 22. a data comparison module; 23. an alarm module; 231. an audible alarm; 232. an optical alarm; 233. a short message alarm; 24. a display module; 3. a control processing device; 31. a preprocessing module; 32. and a line protection module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, an underground pipe network monitoring system for an urban lighting facility disclosed by the invention includes a fault detection device 1 and a fault determination device 2.
Each cable is provided with a plurality of monitoring nodes at intervals, the cable can be segmented, and when the cable breaks down, the position of the cable fault is limited through the abnormity detected at the two monitoring nodes. The fault detection device 1 comprises a fault indication module 11 arranged on each monitoring node, wherein the fault indication module 11 is installed on the monitoring node of the cable, and the fault indication module 11 is used for acquiring test data of the cable on the monitoring node.
The failure determination device 2 includes a data acquisition module 21 and a data comparison module 22, and in this embodiment, the data acquisition module 21 and the data comparison module 22 are integrated in the MCU chip. The data acquisition module 21 is configured to collect test data obtained by each fault detection apparatus 1; the data comparison module 22 stores therein a standard data range for comparison with the test data, and the data comparison module 22 is configured to compare each of the test data with a preset standard data range. If the test data deviates from the standard data range, the data comparison module 22 determines that the test data is abnormal, and defines the monitoring node as an abnormal node when the current test data exceeds the preset standard data range, and further determines whether the test data of the monitoring node adjacent to the abnormal node is located in the preset standard data range, if so, the data comparison module 22 outputs cable fault information of the abnormal node; if not, the data comparison module 22 outputs cable fault information of the cable segment adjacent to the abnormal node; meanwhile, the data comparison module 22 judges the type of the cable fault information according to the specific value of the deviation of the detected data from the standard data range. The cable fault information type includes one or more of short circuit, open circuit or leakage current.
Specifically, in one embodiment, there are monitoring nodes a1, a2, A3, a4 on the cable, each monitoring node is provided with a fault indication module 11, the fault indication module 11 simultaneously acquires test data on the monitoring nodes a1, a2, A3, a4, the fault detection apparatus 1 sends the test data on the monitoring nodes a1, a2, A3, a4 to the data acquisition module 21, the data acquisition module 21 transmits the test data on the monitoring nodes a1, a2, A3, a4 to the data comparison module 22, and compares the test data on the monitoring nodes a1, a2, A3, a4 with a standard data range one by one. If the test data of the monitoring node A2 deviates from the standard data range, judging that the test data is abnormal, defining the monitoring node A2 as an abnormal node, and outputting cable fault information of the monitoring node A2; comparing the test data of the monitoring nodes A1 and A3 with a preset standard data range, if the monitoring node A1 is a normal node and the monitoring node A3 is an abnormal node, outputting cable fault information of the monitoring node A2, and meanwhile, judging that the cable fault occurs between A2 and A3 and the cable between A1 and A2 is normal; continuously comparing the test data of the monitoring node A4 with a preset standard data range, and if the monitoring node A4 is a normal node, still judging that the fault of the cable occurs between A2 and A3; if the monitoring node A4 is an abnormal node, increasing the fault of the judgment cable between A2 and A4; and continuously comparing the test data of the monitoring nodes A5 and A6 … … An with a preset standard data range until the test data of the monitoring nodes are in the standard data range, judging that the cable between A2 and A (n-1) has a fault if the monitoring nodes An are normal nodes, and outputting cable fault information of A2-A (n-1).
The test data may be values of voltage, resistance or current, or other relevant data. The fault detection device 1 stores therein identification data characteristics, which may be geographical location information including cable monitoring nodes, a unique identification code of the fault detection device 1, or other information indicating the location of the cable monitoring nodes.
Further, the fault detection device 1 transmits test data obtained by detecting the cable to the fault determination device 2 by means of wireless communication.
The fault detection device 1 will be described in additional detail below. The fault detection device 1 includes a fault indication module 11 and a communication module 12. The data comparing module 22 is electrically connected to the communication module 12, and the fault indicating module 11 further includes a fault detecting unit 111, a data reading unit 112, and a data transceiving unit 113.
Wherein the failure detection unit 111 is electrically connected to the cable for detecting the test data. In the present embodiment, the fault detection unit 111 may be a PSWHT-08 crosslinked cable sheath fault tester or a YTC630B cable fault comprehensive tester. The data reading unit 112 is electrically connected to the fault detection unit 111 and is configured to read test data of the fault detection unit 111, in this embodiment, the data reading unit 112 is a high-precision smart dial gauge, a micro digital display electric meter, or another electric meter with a communication function. The data transceiver unit 113 is electrically connected to the data reading unit 112, the identification data feature is located in the data transceiver unit 113, and the data transceiver unit 113 sends the test data and the identification data feature to the communication module 12.
The communication module 12 is electrically connected to the failure determination device 2, the communication module 12 is connected to the failure indication module 11 in a wireless communication manner, and the communication module 12 sends the test data and the identification data feature corresponding to the test data to the failure determination device 2. Specifically, the communication module 12 includes a signal transceiver unit 121 and a wireless communication unit 122, where the signal transceiver unit 121 is configured to receive the test data and the identification data feature transmitted by the data transceiver unit 113; the wireless communication unit 122 is electrically connected to the signal transceiver unit 121, and is configured to send the test data and the identification data feature in the signal transceiver unit 121 to the failure determination apparatus 2. The wireless communication mode can be any one of GSM, GPRS, 3G, 4G, 5G, RS-485, RS-232 or wifi, and preferably, the embodiment adopts RS-232 or RS-485, because the transmission rate of RS-232 and RS-485 is fast, the technology is relatively mature and the signal is stable. In the present embodiment, the data transceiving unit 113, the signal transceiving unit 121, and the wireless communication unit 122 may be an RS-232 bus or an RS-485 bus connected through an RS-232 converter or an RS-485 converter.
The failure determination device 2 will be described in additional detail below. The fault judging device 2 is used for collecting the test data obtained by the fault detecting device 1 in real time and judging the cable fault information and the identity identification data characteristics corresponding to the cable fault information. The fault judging device 2 can also alarm the fault cable according to the cable fault information. Specifically, the failure determination device 2 includes one or a combination of more than one of an alarm module 23, a data comparison module 22 and a display module 24, and in this embodiment, the failure determination device 2 includes the alarm module 23, the data comparison module 22 and the display module 24.
The alarm module 23 is electrically connected with the data comparison module 22 to output an alarm signal. The alarm module 23 is used for alarming the fault cable. Further, the alarm module 23 includes any one or a combination of a sound alarm 231, an optical alarm 232 and a short message alarm 233. In the present embodiment, the alarm module 23 includes an audible alarm 231, an optical alarm 232, and a short message alarm 233. The sound alarm 231 can be a buzzer, the optical alarm 232 can be a warning lamp, the short message alarm 233 can be a short message alarm 233HE2508, and the alarm module 23 can generate sound, information or light and other signals, and remind a worker by sending out a warning signal which can arouse the attention of the worker, so that the worker can maintain and process a faulty cable.
The display module 24 can display the test data, the identification data characteristics, the standard data range, the cable fault information type or the alarm signal, the display module 24 can be a liquid crystal display screen or an L ED display screen, and the display module 24 can display the test data, the identification data characteristics, the standard data range, the cable fault information type or the alarm signal in an intuitive form in front of a worker so that the worker can more comprehensively acquire the information of the cable.
Furthermore, the underground pipe network monitoring system of the urban lighting facility further comprises a control processing device 3, the fault judging device 2 further sends the test data to the control processing device 3, and the control processing device 3 processes the cable fault information to limit the circuit circulation of the cable with the fault.
The control processing device 3 will be described in additional detail below. The control processing device 3 includes a preprocessing module 31 and a line protection module 32. The preprocessing module 31 is electrically connected to the data comparison module 22. Specifically, the preprocessing module 31 may be a single chip microcomputer 89C58, a plurality of sets of fault repairing schemes matched with the cable fault information types are stored in the preprocessing module 31 in advance, and the fault repairing schemes of the preprocessing module 31 are matched with the cable fault information types of the data comparing module 22, so as to implement a function of calling the corresponding fault repairing schemes to protect the cable.
The line protection module 32 is installed on a monitoring node of a cable, and the line protection module 32 and the preprocessing module 31 are connected with the preprocessing module 31 by a wireless communication manner, and the line protection module 32 is further electrically connected with the fault detection device 1. specifically, the wireless communication manner is reverse transmission between the communication module 12 and the data transceiver unit 113, that is, the preprocessing module 31, the wireless communication unit 122, the signal transceiver unit 121, the data transceiver unit, and the line protection module 32, the line protection module 32 is electrically connected with a normally closed switch (not shown in the figure) for controlling the power on and off of the cable, two ends of the normally closed switch are respectively coupled with two sections of cables, and when the cable has a fault, the line protection module 32 of the corresponding monitoring node controls the normally closed switch to be turned off, in this embodiment, the line protection module 32 may be a power chip L T1083 CP.
The implementation principle of the above embodiment is as follows: the fault detection unit 111 of the fault detection device 1 detects a cable, test data obtained through detection is read by the data reading unit 112, the data reading unit 112 transmits the test data to the data transceiver unit 113, the data transceiver unit 113 transmits the test data and the identification data characteristics to the communication module 12 in a wireless communication mode, and the communication module 12 transmits the test data and the identification data characteristics corresponding to the test data to the data comparison module 22 in the fault determination device 2. The standard data range in the data comparison module 22 is compared with the test data, if the test data deviates from the standard data range, the detected data is judged to be abnormal, the type of the cable fault information is judged, and the alarm module 23 electrically connected with the data comparison module 22 alarms the faulty cable and sends an alarm signal; the display module 24 electrically connected with the data comparison module 22 can display the test data, the identity recognition data characteristics, the standard data range, the cable fault information type or the alarm signal; the fault repairing scheme in the preprocessing module 31 electrically connected with the data comparison module 22 is matched with the cable fault information type of the data comparison module 22, and the fault repairing scheme is sent to the line protection module 32 in a wireless communication mode to control the on and off of the normally closed switch.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. The utility model provides an underground pipe network monitored control system of urban lighting facilities which characterized in that: comprises a fault detection device (1) and a fault judgment device (2); each cable is provided with a plurality of monitoring nodes at intervals, the fault detection device (1) comprises a fault indication module (11) arranged on each monitoring node, and the fault indication module (11) is used for acquiring test data of the cable on the monitoring nodes; the fault judgment device (2) comprises a data acquisition module (21) and a data comparison module (22), wherein the data acquisition module (21) is used for collecting test data obtained by each fault detection device (1); the data comparison module (22) is stored with a standard data range, and the data comparison module (22) is used for comparing each test data with a preset standard data range; if the test data deviate from the standard data range, judging that the test data are abnormal, defining the monitoring node as an abnormal node when the current test data exceed the preset standard data range, further judging whether the test data of the monitoring node adjacent to the abnormal node are located in the preset standard data range, and if so, outputting cable fault information of the abnormal node; if not, outputting cable fault information of the cable section adjacent to the abnormal node; and judging to obtain the type of the cable fault information according to the specific numerical value of the deviation of the detected data from the standard data range.
2. The underground pipe network monitoring system of the urban lighting facility according to claim 1, wherein: the fault indication module (11) and the fault judgment device (2) are in wireless communication connection through a communication module (12).
3. The underground pipe network monitoring system of the urban lighting facility according to claim 1, wherein: the cable fault information type comprises any one or more of short circuit, open circuit and electric leakage.
4. The underground pipe network monitoring system of the urban lighting facility according to claim 1, wherein: the fault judgment device (2) further comprises an alarm module (23) for alarming a fault cable; the data comparison module (22) is electrically connected with the alarm module (23) to output an alarm signal.
5. The underground pipe network monitoring system of the urban lighting facility according to claim 4, wherein: the alarm module (23) comprises any one or combination of a sound alarm (231), an optical alarm (232) and a short message alarm (233).
6. The underground pipe network monitoring system of the urban lighting facility according to any one of claims 1 to 5, wherein: the fault judgment device (2) further comprises a display module (24), and the display module (24) displays the test data, the identity recognition data characteristics, the standard data range, the cable fault information type or the alarm signal.
7. The underground pipe network monitoring system of the urban lighting facility according to claim 1, wherein: the cable fault diagnosis device further comprises a control processing device (3) which is used for processing the cable fault information collected in the fault diagnosis device (2).
8. The underground pipe network monitoring system of the urban lighting facility according to claim 7, wherein: the control processing device (3) comprises a preprocessing module (31) and a line protection module (32); a plurality of sets of fault repairing schemes matched with the cable fault information types are prestored in the preprocessing module (31), and the fault repairing schemes of the preprocessing module (31) are matched with the cable fault information types of the data comparison module (22); the line protection module (32) is installed on a monitoring node of the cable, and the line protection module (32) and the preprocessing module (31) are connected with the preprocessing module (31) in a wireless communication mode.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112213667A (en) * | 2020-09-28 | 2021-01-12 | 重庆朗天通讯股份有限公司 | Tunnel multi-state monitoring method and device, computer equipment and storage medium |
| CN112577974A (en) * | 2020-11-25 | 2021-03-30 | 武汉三相电力科技有限公司 | Cable joint fault detection device, system and method |
| CN113421709A (en) * | 2021-06-15 | 2021-09-21 | 南京纪壹电子科技有限公司 | Intelligent comprehensive wiring cable convenient for intelligently monitoring line operation condition |
| CN113985226A (en) * | 2021-10-25 | 2022-01-28 | 广东电网有限责任公司 | Cable processing method and system |
| CN114280498A (en) * | 2021-11-24 | 2022-04-05 | 山西三友和智慧信息技术股份有限公司 | Intelligent troubleshooting system for electronic circuit faults |
| CN114325222A (en) * | 2021-12-09 | 2022-04-12 | 山西三友和智慧信息技术股份有限公司 | Electronic device failure monitoring protection control system |
| CN114501755A (en) * | 2022-01-04 | 2022-05-13 | 深圳向云科技有限公司 | Lighting facility monitoring method, system, device and computer readable storage medium |
| CN116381563A (en) * | 2023-05-30 | 2023-07-04 | 菱亚能源科技（深圳）股份有限公司 | Underground power cable monitoring method and device |
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Application publication date: 20200728 |