CN113009284A - Rail transit cable monitoring system - Google Patents
Rail transit cable monitoring system Download PDFInfo
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- CN113009284A CN113009284A CN202110354826.8A CN202110354826A CN113009284A CN 113009284 A CN113009284 A CN 113009284A CN 202110354826 A CN202110354826 A CN 202110354826A CN 113009284 A CN113009284 A CN 113009284A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 42
- 230000002159 abnormal effect Effects 0.000 claims abstract description 19
- 238000010891 electric arc Methods 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 229910052710 silicon Inorganic materials 0.000 description 10
- 239000010703 silicon Substances 0.000 description 10
- 238000012423 maintenance Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/952—Inspecting the exterior surface of cylindrical bodies or wires
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
Abstract
The invention discloses a rail transit cable monitoring system, which comprises an image video module, a positioning module, an electric arc monitoring module, a signal calibration module, a processor, a database and a monitoring terminal, wherein the electric arc monitoring module receives position information input by the positioning module, the arc data packet is sent to the processor by taking the position information as a mark and the arc information as the content of the data packet, meanwhile, the operational amplifier AR3 is used to compare the video signal with the video data reference signal, the compensation signal is used to realize the compensation effect on the data signal, meanwhile, the signal calibration module compares the arc signal with the arc data reference signal by using the operational amplifier AR6, screens abnormal arc signal potential and sends the abnormal arc signal potential to the processor, the processor receives the compensated video signal and the detected arc signal, and the position information is used as a mark, and the video signal and the arc signal are used as contents to be sent to the remote monitoring terminal.
Description
Technical Field
The invention relates to the technical field of cable monitoring, in particular to a rail transit cable monitoring system.
Background
In rail transit, a large amount of cables are arranged along a rail, the cables have the functions of power transmission and communication, the monitoring of the state of the cables at present completely depends on manual monitoring of maintenance personnel, whether the cables are damaged or not is checked, a subway traffic cable is taken as an example, many cables arranged along the rail are arranged in a humid underground environment, in the actual operation process, as cable lines are all arranged in a cable trench, fault points cannot be effectively monitored by personnel after faults occur, and the rail traffic cable is extremely prone to the problems of aging, erosion, fault electric arcs and the like, so that once the rail traffic cable breaks down, the monitoring cannot be carried out in time, and the driving safety of the rail transit is seriously influenced.
Disclosure of Invention
Aiming at the situation, the invention can monitor the rail transit cable in real time, can monitor the fault arc of the cable and can directly position the position of the fault cable.
The technical scheme for solving the problem is that the system comprises an image video module, a positioning module, an electric arc monitoring module, a signal calibration module, a processor, a database and a monitoring terminal, and the monitoring system comprises the following specific steps:
s1: firstly, arranging a video collector in a rail transit cable trench every 100 meters, arranging a positioner at each video collector, and arranging an arc monitor every 50 meters;
s2: the image video acquisition module acquires the image video information of the rail transit cable in real time through the arranged video acquisition device;
the positioning module positions the position of each video collector in real time through a set positioner;
the arc monitoring module collects the arc information of the rail transit cable in real time through the arranged arc monitor;
s3: the image video acquisition module receives the position information input by the positioning module, takes the position information as a mark and the image video information as the content of a data packet, and sends the video data packet to the processor;
s4: the arc monitoring module receives the position information input by the positioning module, takes the position information as a mark and the arc information as data packet content, and sends the arc data packet to the processor;
s5: the signal calibration module receives processor information to compensate the video signal, detects the arc signal at the same time, and sends the compensated video signal and the arc detection result to the processor;
s6: the processor transmits the arc information and the image video signal to the remote monitoring terminal.
Further, the processor in step S5 converts the received video data packet into analog signals, i.e., video signals, and sends the analog signals to the signal calibration module, and meanwhile, the processor sends the arc voltage signals, i.e., arc signals, in the arc data packet to the signal calibration module, and calls corresponding video data reference signals and arc data reference signals in the database to send the video data reference signals and arc data reference signals to the signal calibration module.
Further, the signal calibration module compares the video signal with the video data reference signal by using the operational amplifier AR3, when the potential of the video signal is low, the operational amplifier AR3 outputs a high potential to trigger the thyristor Q1 to be turned on, meanwhile, the compensation signal is input into the operational amplifier AR4 through the thyristor Q1, and the operational amplifier AR4 adds and adjusts the video signal and the compensation signal and then sends the video signal and the compensation signal to the processor;
meanwhile, the signal calibration module compares the arc signal with the arc data reference signal by using the operational amplifier AR6, when the arc signal is abnormal, the operational amplifier AR6 outputs high potential to trigger the thyristor Q2 to be conducted, the arc signal is input into the processor through the thyristor Q2, otherwise, the thyristor is not conducted;
the processor receives the compensated video signal and the detected arc signal, takes the position information as a mark, and takes the video signal and the arc signal as contents to be sent to the remote monitoring terminal.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. in order to position fault information at any time, the arc monitoring module receives position information input by the positioning module, takes the position information as a mark and the arc information as data packet content, sends an arc data packet to the processor, compares a video signal with a video data reference signal by using an operational amplifier AR3, and compensates the data signal by using a compensation signal;
meanwhile, the signal calibration module compares the arc signals with the arc data reference signals by using the operational amplifier AR6, screens abnormal arc signal potentials and sends the abnormal arc signals to the processor, the processor receives the compensated video signals and the detected arc signals, the position information is used as a mark, the video signals and the arc signals are sent to the remote monitoring terminal as contents, real-time monitoring on the track traffic cables is achieved, meanwhile, the fault arcs of the cables can be monitored, and the positions of the fault arc cables can be directly located.
Drawings
FIG. 1 is a block diagram of the present invention.
Fig. 2 is a circuit diagram of a signal calibration module according to the present invention.
Detailed Description
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
In order to monitor the rail transit cable in real time, in addition, due to the existence of a cable trench, the cable can be monitored completely by 1 or two monitors, a video collector is arranged in the rail transit cable trench at intervals of 100 meters, a positioner is arranged at each video collector, an arc monitor is arranged at intervals of 50 meters, the rail transit cable is monitored comprehensively, and an image video acquisition module acquires image video information of the rail transit cable in real time through the arranged video collector; the positioning module positions the position of each video collector in real time through a set positioner; the arc monitoring module collects the arc information of the rail transit cable in real time through the arranged arc monitor; the image video acquisition module receives the position information input by the positioning module, takes the position information as a mark and the image video information as the content of a data packet, and sends the video data packet to the processor;
in order to position the fault information at any time, the arc monitoring module receives the position information input by the positioning module, takes the position information as a mark and takes the arc information as data packet content, and sends the arc data packet to the processor.
In order to enable the signal calibration module to detect the video signal and the arc signal, the processor converts the received video data packet into an analog signal in a digital-analog manner, namely the video signal, and sends the analog signal to the signal calibration module, and meanwhile, the processor sends the arc voltage signal in the arc data packet, namely the arc signal, to the signal calibration module, and calls a corresponding video data reference signal and an arc data reference signal in the database to send the video data reference signal and the arc data reference signal to the signal calibration module.
Due to the complexity of the rail transit cable environment, data are easy to be seriously attenuated in the transmission process, a processor is arranged every 1000 meters, meanwhile, the signal calibration module utilizes the operational amplifier AR3 to compare a video signal with a video data reference signal, when the potential of the video signal is low, the operational amplifier AR3 outputs high potential to trigger the conduction of the controllable silicon Q1, meanwhile, a compensation signal is input into the operational amplifier AR4 through the controllable silicon Q1, the operational amplifier AR4 adds and adjusts the video signal and the compensation signal and then sends the video signal and the compensation signal to the processor to realize the compensation of the data signal, wherein the operational amplifier AR1 and the operational amplifier AR2 play a role of smoothing the signal, and the power supply +2.5V raises the potential of the controllable silicon Q1 control electrode by the resistor R3 to improve the effect that the controllable silicon Q1 can detect the output signal of the operational amplifier AR 3;
while the signal calibration module uses the op amp AR6 to compare the arc signal to the arc data reference signal, when the arc signal is abnormal, the operational amplifier AR6 outputs high potential to trigger the thyristor Q2 to conduct, the arc signal is input into the processor through the thyristor Q2, otherwise the thyristor is not conducted, in order to prevent the processor from being damaged due to the overlarge potential of the abnormal arc signal, a limiting circuit consisting of a diode D1 and a diode D2 is arranged to limit the signal within 0-3V, wherein the power supply +1V raises the potential of the control electrode of the controllable silicon Q1 through the resistor R8, and as the voltage of the electric arc signal is larger than the potential of the video signal, therefore, only the voltage +1V needs to be applied for raising, namely, an abnormal arc signal is sent to the processor, the processor receives the compensated video signal and the detected arc signal, the position information is used as a mark, and the video signal and the arc signal are used as contents to be sent to a remote monitoring terminal;
the video signal can be distinguished whether the rail transit cable is abnormal or not by the monitoring terminal through the video image processing technology, but the video image processing technology cannot detect the arc state of the rail transit cable, so that the abnormal arc signal is directly screened out through the signal calibration module, the video signal is sent to the monitoring terminal to be screened through the video image technology, the monitoring terminal receives the abnormal arc signal, corresponding position signals are directly extracted, related personnel are informed of technical maintenance, meanwhile, the video signal is subjected to video image processing, once the video signal is sent to be abnormal, the corresponding position signals are extracted, and the related personnel are informed of the technical maintenance.
The specific structure of the signal calibration module comprises that the non-inverting input end of an operational amplifier AR1 is connected with a video signal input port, the inverting input end of an operational amplifier AR1 is connected with the inverting input end of an operational amplifier AR3, the output port of the operational amplifier AR1 and one end of a resistor R1, the non-inverting input end of an operational amplifier AR3 is connected with the output end of an operational amplifier AR2 and the inverting input end of an operational amplifier AR1, the non-inverting input end of the operational amplifier AR2 is connected with a video data reference signal, the output end of an operational amplifier AR3 is connected with the control electrode of a thyristor Q1 and one end of a resistor R3, the other end of the resistor R3, the positive pole of the controlled silicon Q1 is connected with a compensation signal through a resistor R2, the negative pole of the controlled strand Q1 is connected with the other end of the resistor R1 and the non-inverting input end of an operational amplifier AR4, the inverting input end of the operational amplifier AR4 is connected with one end of a resistor R4 and one end of a resistor R5, the other end of the resistor R4 is grounded, and the other end of the resistor R5 is connected with the resistor R6, one end of a resistor R7 and the output end of the operational amplifier AR 4; the signal calibration module further comprises an operational amplifier AR5, the non-inverting input end of the operational amplifier AR5 is connected with an arc signal input port, the inverting input end of the operational amplifier AR5 is connected with the non-inverting input end of the operational amplifier AR6, the output end of the operational amplifier AR5 and the anode of a thyristor Q2, the inverting input end of the operational amplifier AR6 is connected with the output end and the inverting input end of the operational amplifier AR7, the non-inverting input end of the operational amplifier AR7 is connected with an arc data reference signal, the output end of the operational amplifier AR6 is connected with a resistor R8, one end of a resistor R9 and the control electrode of a thyristor Q2, the other end of the resistor R8 is connected with a power supply +1V, the other end of the resistor R9 is grounded, the cathode of the thyristor Q2 is connected with the anode of a diode D1, the cathode of a diode D2 and the other end of the resistor R7, the cathode of a diode D.
When the system is used specifically, firstly, video collectors are arranged in the rail transit cable trench every 100 meters, a positioner is arranged at each video collector, an electric arc monitor is arranged every 50 meters, a processor is arranged every 1000 meters, the rail transit cable is monitored comprehensively, and an image video acquisition module acquires image video information of the rail transit cable in real time through the arranged video collectors; the positioning module positions the position of each video collector in real time through a set positioner; the arc monitoring module collects the arc information of the rail transit cable in real time through the arranged arc monitor; the image video acquisition module receives the position information input by the positioning module, takes the position information as a mark and the image video information as the content of a data packet, and sends the video data packet to the processor; the arc monitoring module receives the position information input by the positioning module, takes the position information as a mark and the arc information as data packet content, and sends the arc data packet to the processor; meanwhile, the signal calibration module utilizes an operational amplifier AR3 to compare a video signal with a video data reference signal, when the potential of the video signal is lower, the operational amplifier AR3 outputs a high potential to trigger a controllable silicon Q1 to be conducted, meanwhile, a compensation signal is input into the operational amplifier AR4 through the controllable silicon Q1, the operational amplifier AR4 adds and adjusts the video signal and the compensation signal and then sends the video signal and the compensation signal to a processor to realize the compensation of the data signal, wherein the operational amplifier AR1 and the operational amplifier AR2 play a role in smoothing the signal, and a power supply +2.5V raises the potential of a controllable silicon Q1 control electrode by a resistor R3 so as to improve the effect that the controllable silicon Q1 can detect the output signal of the operational amplifier AR 3;
meanwhile, the signal calibration module utilizes an operational amplifier AR6 to compare an arc signal with an arc data reference signal, when the arc signal is abnormal, the operational amplifier AR6 outputs a high potential to trigger a thyristor Q2 to be conducted, the arc signal is input into a processor through the thyristor Q2, otherwise, the thyristor is not conducted, and in order to prevent the abnormal arc signal potential from being too large, the processor is damaged, a limiting circuit consisting of a diode D1 and a diode D2 is arranged to limit the signal within 0 to +3V, wherein a power supply +1V raises the potential of a thyristor Q1 through a resistor R8, the function is the same as that, as the voltage of the arc signal is greater than the video signal potential, only the abnormal arc signal needs to be raised through the voltage +1V, namely the abnormal arc signal is sent to the processor, the processor receives a compensated video signal and a detected arc signal, the processor takes position information as a mark, and the video signal and the arc signal are sent to a remote monitoring terminal by taking the, and the monitoring terminal directly extracts the corresponding position signal to inform the relevant personnel of technical maintenance after receiving the abnormal arc signal, and simultaneously performs video image processing on the video signal, extracts the corresponding position signal once the image is abnormal and informs the relevant personnel of technical maintenance.
While the invention has been described in further detail with reference to specific embodiments thereof, it is not intended that the invention be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (4)
1. The utility model provides a track traffic cable monitoring system, its characterized in that, includes image video module, orientation module, electric arc monitoring module, signal calibration module and treater, database and monitor terminal, and its characterized in that, monitoring system concrete step is as follows:
s1: firstly, arranging a video collector in a rail transit cable trench every 100 meters, arranging a positioner at each video collector, and arranging an arc monitor every 50 meters;
s2: the image video acquisition module acquires the image video information of the rail transit cable in real time through the arranged video acquisition device;
the positioning module positions the position of each video collector in real time through a set positioner;
the arc monitoring module collects the arc information of the rail transit cable in real time through the arranged arc monitor;
s3: the image video acquisition module receives the position information input by the positioning module, takes the position information as a mark and the image video information as the content of a data packet, and sends the video data packet to the processor;
s4: the arc monitoring module receives the position information input by the positioning module, takes the position information as a mark and the arc information as data packet content, and sends the arc data packet to the processor;
s5: the signal calibration module receives processor information to compensate the video signal, detects the arc signal at the same time, and sends the compensated video signal and the arc detection result to the processor;
s6: the processor transmits the arc information and the image video signal to the remote monitoring terminal.
2. The rail transit cable monitoring system of claim 1, wherein the processor in step S5 converts the received video data packet into analog signals, i.e. video signals, and sends the analog signals to the signal calibration module, and the processor sends the arc voltage signals, i.e. arc signals, in the arc data packet to the signal calibration module, and calls the corresponding video data reference signals and arc data reference signals in the database to send the video data reference signals and arc data reference signals to the signal calibration module.
3. The rail transit cable monitoring system of claim 2, wherein the signal calibration module uses an operational amplifier AR3 to compare the video signal with the video data reference signal, when the video signal is at a low potential, the operational amplifier AR3 outputs a high potential to trigger the thyristor Q1 to conduct, meanwhile, the compensation signal is input into the operational amplifier AR4 through the thyristor Q1, and the operational amplifier AR4 adds and adjusts the video signal and the compensation signal and then sends the video signal and the compensation signal to the processor;
meanwhile, the signal calibration module compares the arc signal with the arc data reference signal by using the operational amplifier AR6, when the arc signal is abnormal, the operational amplifier AR6 outputs high potential to trigger the thyristor Q2 to be conducted, the arc signal is input into the processor through the thyristor Q2, otherwise, the thyristor is not conducted;
the processor receives the compensated video signal and the detected arc signal, takes the position information as a mark, and takes the video signal and the arc signal as contents to be sent to the remote monitoring terminal.
4. The rail transit cable monitoring system according to any one of claims 1 to 3, wherein the signal calibration module comprises an operational amplifier AR1, a non-inverting input terminal of the operational amplifier AR1 is connected with a video signal input port, an inverting input terminal of the operational amplifier AR1 is connected with an inverting input terminal of the operational amplifier AR3, an output port of the operational amplifier AR1 and one end of a resistor R1, a non-inverting input terminal of the operational amplifier AR3 is connected with an output terminal of the operational amplifier AR2 and an inverting input terminal of the operational amplifier AR1, a non-inverting input terminal of the operational amplifier AR2 is connected with a video data reference signal, an output terminal of the operational amplifier AR3 is connected with a control electrode of a thyristor Q1 and one end of a resistor R3, the other end of the resistor R3 is connected with a power supply +2.5V, a positive electrode of the Q1 is connected with a compensation signal through a resistor R2, a negative electrode of the controllable winding Q1 is connected with the other end of a resistor R1 and the non-inverting input terminal of the operational amplifier AR4, an, the other end of the resistor R4 is grounded, and the other end of the resistor R5 is connected with the resistor R6, one end of the resistor R7 and the output end of the operational amplifier AR 4;
the signal calibration module further comprises an operational amplifier AR5, the non-inverting input end of the operational amplifier AR5 is connected with an arc signal input port, the inverting input end of the operational amplifier AR5 is connected with the non-inverting input end of the operational amplifier AR6, the output end of the operational amplifier AR5 and the anode of a thyristor Q2, the inverting input end of the operational amplifier AR6 is connected with the output end and the inverting input end of the operational amplifier AR7, the non-inverting input end of the operational amplifier AR7 is connected with an arc data reference signal, the output end of the operational amplifier AR6 is connected with a resistor R8, one end of a resistor R9 and the control electrode of a thyristor Q2, the other end of the resistor R8 is connected with a power supply +1V, the other end of the resistor R9 is grounded, the cathode of the thyristor Q2 is connected with the anode of a diode D1, the cathode of a diode D2 and the other end of the resistor R7, the cathode of a diode D.
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| CN202110354826.8A CN113009284B (en) | 2021-04-01 | 2021-04-01 | Rail transit cable monitoring system |
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| CN202110354826.8A CN113009284B (en) | 2021-04-01 | 2021-04-01 | Rail transit cable monitoring system |
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