CN114236428B - Leakage cable falling monitoring system and method - Google Patents
Leakage cable falling monitoring system and method Download PDFInfo
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- CN114236428B CN114236428B CN202111472664.4A CN202111472664A CN114236428B CN 114236428 B CN114236428 B CN 114236428B CN 202111472664 A CN202111472664 A CN 202111472664A CN 114236428 B CN114236428 B CN 114236428B
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
Abstract
The application relates to a leakage cable falling monitoring system and method, belonging to the leakage cable monitoring technical field, wherein the system comprises a monitoring electronic tag and a management module, the monitoring electronic tag is connected with the management module through leakage cable communication, the monitoring electronic tag is attached to the leakage cable, an enabling controller is covered on the monitoring electronic tag, the enabling controller is used for shielding communication between the monitoring electronic tag and the management module when the leakage cable is not falling off, and is separated from the monitoring electronic tag when the leakage cable is falling off, so that the communication shielding effect on the monitoring electronic tag and the management module is eliminated; the management module is used for sending a first identification signal and judging that the leaky cable falls off when receiving a feedback signal returned by the monitoring electronic tag based on the first identification signal; and the management module is also used for determining and outputting the position information of the monitoring electronic tag based on the feedback signal after the drop of the leaky cable is judged. According to the application, the real-time monitoring of the drop cable is realized through the monitoring electronic tag and the management unit, and manual inspection is not needed.
Description
Technical Field
The application relates to the technical field of leakage cable monitoring, in particular to a leakage cable falling monitoring system and a leakage cable falling monitoring method.
Background
With the rapid development of the high-speed railway, the use amount of leaky coaxial cables is increased continuously, and as the high-speed train enters and exits the tunnel of the high-speed railway, air in the tunnel can be driven to flow at a high speed, and the phenomenon of compressing gas by a piston in a cylinder is similar, namely, a piston effect. The leakage cable and the lifting appliance thereof are easy to loosen under the action of vibration load for a long time, so that the leakage cable falls off, thereby causing the reduction of communication quality and forcing the train to slow down; when serious, the train stops and collides, and the running safety of the train is affected.
In the prior art, the method for monitoring the drop of the leaky cable is manual inspection, namely, workers carry out inspection on the walk of the leaky cable in the tunnel.
Aiming at the related technology, the inventor considers that the inspection time of a method for manually inspecting and monitoring whether the leaky cable falls off is limited, and if the leaky cable falls off outside the inspection time, the leaky cable cannot be found out in time manually.
Disclosure of Invention
In order to timely monitor drop of a leaky cable, the application provides a system and a method for monitoring drop of the leaky cable.
In a first aspect, the application provides a leakage cable drop monitoring system, which adopts the following technical scheme:
the leakage cable falling monitoring system comprises a monitoring electronic tag and a management module, wherein the monitoring electronic tag is in communication connection with the management module through a leakage cable, the monitoring electronic tag is attached to the leakage cable, the monitoring electronic tag is covered with an enabling controller, and the enabling controller is used for shielding communication between the monitoring electronic tag and the management module when the leakage cable is not falling off and separating from the monitoring electronic tag when the leakage cable is falling off, so that the communication shielding effect on the monitoring electronic tag and the management module is eliminated;
the management module is used for sending a first identification signal and judging that the leaky cable falls off when receiving a feedback signal returned by the monitoring electronic tag based on the first identification signal;
and the management module is also used for determining and outputting the position information of the monitoring electronic tag based on the feedback signal after judging that the leaky cable is detached.
Through adopting above-mentioned technical scheme, management module is used for sending first identification signal, if receive the feedback signal that monitoring electronic tags sent, then judge the weeping cable drops, and management module is used for determining the position that monitors electronic tags simultaneously, and the position of monitoring electronic tags is the position of dropping the weeping cable promptly, is convenient for in time fix a position the weeping cable that drops, need not to patrol through the manual work and examine, realizes still can in time monitor outside artifical inspection time and the effect of location, has improved the efficiency of monitoring simultaneously.
The monitoring electronic tag is in communication connection with the management module through the leaky cable, and the enabling controller is used for shielding communication between the monitoring electronic tag and the management module, and at the moment, the management module cannot receive feedback signals sent by the monitoring electronic tag.
Optionally, one end of the lifting appliance is fixedly connected with the wall, one end of the lifting appliance far away from the wall is provided with a lifting appliance cover and a clamping groove for clamping the leakage cable, the enabling controller is attached to the inner side of the lifting appliance cover, and when the lifting appliance cover is buckled, the enabling controller covers the monitoring electronic tag;
or (b)
One side of the enabling controller is attached to the monitoring electronic tag, and one side of the enabling controller, which is far away from the monitoring electronic tag, is fixedly connected to a wall or the lifting appliance.
Through adopting above-mentioned technical scheme, when the cable leakage does not drop, the monitoring electronic tags on the cable leakage is covered by the enabling controller of hoist lid inboard subsides dress this moment, and the communication between monitoring electronic tags and the management module is shielded, when the cable leakage drops from the hoist, enables the shielding effect of controller and disappears, and the feedback signal that management module received is the feedback signal that monitoring electronic tags that the cable leakage droed the department sent promptly. Therefore, if the management module receives the feedback signal, the leakage cable is indicated to fall off from the lifting appliance;
one side of the enabling controller is fixedly connected with the lifting appliance, and one side far away from the lifting appliance is attached to the monitoring electronic tag, so that the mounting of workers is facilitated; one side of the controller is fixedly connected with the wall, one side far away from the wall is attached to the monitoring electronic tag, and the mounting mode enables the mounting position of the monitoring electronic tag on the leaky cable to be flexible and free from the restraint of the lifting appliance.
Optionally, the management module includes a first management unit, a network management center, and a signal combiner, where the signal combiner is electrically connected to the first management unit, and the signal combiner is configured to transmit an identification signal sent by the first management unit to the leaky cable, so that the identification signal is transmitted to the monitoring electronic tag through the leaky cable, receive a feedback signal sent by the monitoring electronic tag, and transmit the feedback signal to the first management unit; the feedback signal is at a different frequency than the communication signal;
the first management unit is in communication connection with the network management center, and is used for receiving the feedback signal, determining the position information of the monitoring electronic tag corresponding to the feedback signal, and uploading the feedback signal and the position information of the monitoring electronic tag to the network management center;
the network management center is used for judging that the leaky cable falls off and outputting the position information of the monitoring electronic tag.
Through adopting above-mentioned technical scheme, first management unit is used for receiving the communication signal of feedback signal and weeping cable transmission, because communication signal is inconsistent with the frequency of feedback signal, so acquire inconsistent signal with the communication signal of weeping cable be feedback signal, first management unit passes through feedback signal and confirms monitoring electronic tags positional information, and monitoring electronic tags positional information is weeping cable drop.
Optionally, the drop cable monitoring system further includes a fault location electronic tag, the fault location electronic tag is mounted on the drop cable, the first management unit is configured to send a second identification signal to the fault location electronic tag through the signal combiner, the fault location electronic tag is configured to send a return signal to the first management unit after receiving the second identification signal, the first management unit is configured to receive the return signal and generate alarm information based on the acquired signal strength of the return signal, and send the return information corresponding to the return signal and the alarm information to a network management center, and the network management center is configured to determine that the drop cable fails based on the alarm information.
Through adopting above-mentioned technical scheme, when the trouble such as breakage, damage appear in the weeping cable, first management unit produces alarm information based on the signal strength of fault location electronic tags return signal, and the network management center receives alarm information and judges that the weeping cable breaks down promptly to remind the weeping cable to break down in the background staff tunnel, make the background staff take the processing measure in time.
Optionally, the management module further includes a second management unit, where the second management unit is electrically connected to an end of the leaky cable, where the end of the leaky cable is far away from the first management unit, the second management unit is connected to the monitoring electronic tag through the leaky cable, and the second management unit is connected to the network management center through communication.
Through adopting above-mentioned technical scheme, leak cable one end and first management unit and be connected, the other end is connected with the second management unit, has increased signal transmission's accuracy to be favorable to monitoring the longer leak cable of length.
Optionally, an end of the leaky cable far away from the first management unit is electrically connected with a matching terminal, and the matching terminal is used for absorbing the feedback signal of the leaky cable far away from the end of the first management unit.
By adopting the technical scheme, the matching terminal is impedance matching and is used for inhibiting the reflection of the feedback signal of the monitoring electronic tag, namely absorbing the feedback signal of the monitoring electronic tag and preventing the reflected feedback signal from influencing the monitoring result.
In a second aspect, the application provides a leakage cable falling off monitoring method, which adopts the following technical scheme:
a leakage cable falling monitoring method is provided, wherein a plurality of monitoring electronic tags are arranged on one leakage cable, and the method comprises the following steps:
transmitting an RFID first identification signal;
judging whether a feedback signal sent by the preset monitoring electronic tag based on the RFID first identification signal is acquired or not, wherein the feedback signal comprises coding information of the monitoring electronic tag;
if yes, judging that the leaky cable corresponding to the monitoring electronic tag falls off;
acquiring position information of the monitoring electronic tags corresponding to the falling positions of the fallen leaky cables, the number information of all the monitoring electronic tags on the fallen leaky cables and the position information of all the monitoring electronic tags on the fallen leaky cables based on the coding information of the monitoring electronic tags;
and uploading the quantity information of the monitoring electronic tags, the position information of all the monitoring electronic tags on the dropped leakage cables and the position information of the monitoring electronic tags at the dropped positions of the leakage cables to a leakage cable abnormal database.
By adopting the technical scheme, whether the leakage cable falls off from the lifting appliance is judged by judging whether the monitoring electronic tag has a feedback signal or not, manual inspection is not needed, and whether the leakage cable falls off or not is conveniently and timely monitored; based on the coding information of the monitoring electronic tag, the position information of the monitoring electronic tag is obtained, and the position information of the monitoring electronic tag is the drop position of the leaky cable, so that the drop position of the leaky cable can be positioned in time.
Optionally, the leaky cable is further provided with a fault locating electronic tag, and after the step of sending the RFID first identification signal, the method further includes:
acquiring initial signal intensity and real-time signal intensity of a return signal sent by the fault location electronic tag;
acquiring difference information between the real-time signal strength and the initial signal strength;
judging whether the difference information accords with a preset threshold value condition, and generating alarm information when the difference information accords with the preset threshold value condition;
and uploading the alarm information to a preset alarm database.
Through adopting above-mentioned technical scheme, if the cable leaks when breaking down, when the cable leaks damages or breaks promptly, influences the signal intensity of fault location electronic tags's return signal, therefore fault location electronic tags return signal's signal intensity is inconsistent with initial signal intensity, accessible difference information produces alarm information this moment, the background staff of being convenient for in time dispatch personnel according to alarm information and maintain the cable that leaks in trouble, prevent that the cable that leaks in trouble from causing the influence to the safety of advancing of train.
Optionally, the alarm information includes emergency alarm information, important alarm information and general alarm information, the step of judging whether the difference information meets a preset threshold condition, and when the difference information meets the preset threshold condition, the step of generating the alarm information includes:
judging whether the difference information is smaller than a preset emergency alarm threshold value or not;
if yes, emergency alarm information is generated;
if not, judging whether the difference information is smaller than a preset important alarm threshold value;
if yes, generating important alarm information;
if not, judging whether the difference information is smaller than a preset general alarm threshold value;
if yes, generating general alarm information;
acquiring positioning coding information of a return signal sent by the fault positioning electronic tag;
searching positioning information corresponding to positioning coding information sent by a fault positioning electronic tag in a preset fault positioning electronic tag database;
and uploading the positioning information to the leaky cable abnormal database.
By adopting the technical scheme, the alarm information is divided into emergency alarm information, important alarm information and general alarm information, so that background staff can conveniently judge the fault condition of the leaky cable according to the alarm information, and timely maintain the failed leaky cable according to the alarm information;
if the leaky cable fails, the positioning information of the failure positioning electronic tag is the positioning information of the failed leaky cable, and the positioning information is uploaded to a leaky cable abnormal database, so that a background worker can monitor the positioning of the failed leaky cable through the leaky cable abnormal database, and a maintenance worker can be dispatched in time to maintain the failed leaky cable.
Optionally, the step of acquiring the position information of the dropped monitoring electronic tag corresponding to the dropped position of the dropped leakage cable, the number information of all the dropped monitoring electronic tags on the leakage cable, and the position information of all the dropped monitoring electronic tags on the leakage cable based on the coding information of the monitoring electronic tag includes:
acquiring grouping information in a preset monitoring electronic tag database, wherein the grouping information comprises grouping information of the leaky cables, the number information of the monitoring electronic tags on each leaky cable, coding information of all the monitoring electronic tags on each leaky cable and position information of all the monitoring electronic tags;
searching position information corresponding to the coding information sent by the monitoring electronic tag at the drop position of the dropped cable in the grouping information;
acquiring position information of other monitoring electronic tags in the same group as the monitoring electronic tag at the drop position of the dropped leakage cable;
and acquiring the quantity information of the monitoring electronic tags of the group where the monitoring electronic tags of the drop-off part of the drop cable are located.
Through adopting above-mentioned technical scheme, based on the encoded information of the monitoring electronic tags who obtains, retrieve the positional information of the corresponding encoded information in the monitoring electronic tags database, obtain the positional information of monitoring electronic tags promptly, the position of leaking the cable drop, and according to the encoded information of the monitoring electronic tags who obtains, seek in the monitoring electronic tags database with the other monitoring electronic tags's of the monitoring electronic tags same group that obtain positional information and the quantity of all monitoring electronic tags on the leaking cable that is located, the background staff of being convenient for responds in time based on leaking the cable drop position, dispatch personnel looks over or maintains.
In summary, the application has at least one of the following beneficial effects:
1. real-time monitoring to drop leakage cable is realized through monitoring electronic tags and management unit, need not artifical inspection.
2. The enabling controller is used for shielding communication between the monitoring electronic tag and the first management unit, when the leaky cable falls off, the enabling controller is separated from the monitoring electronic tag, the monitoring electronic tag sends a feedback signal and is received by the first management unit, namely, the first management unit indicates that the leaky cable falls off when monitoring the feedback signal sent by the monitoring electronic tag.
3. And through the fault positioning electronic tag, the fault alarm of the leaky cable is realized, so that a background person can repair the failed leaky cable in time according to alarm information.
Drawings
Fig. 1 is an overall block diagram of embodiment 1 of a drop cable monitoring system according to an embodiment of the present application.
Fig. 2 is an overall block diagram of embodiment 2 of a drop cable monitoring system according to an embodiment of the present application.
Fig. 3 is an overall flowchart of a method for monitoring drop cable according to an embodiment of the present application.
Fig. 4 is a flowchart of a method for determining whether difference information meets a preset threshold condition and generating alarm information when the difference information meets the preset threshold condition in a drop-out monitoring method according to an embodiment of the present application.
Fig. 5 is a flowchart of acquiring position information of a monitoring electronic tag corresponding to a drop position of a dropped drop cable, number information of all monitoring electronic tags on the dropped drop cable, and position information of all monitoring electronic tags on the dropped drop cable based on coding information of the monitoring electronic tag in the drop cable drop monitoring method according to the embodiment of the present application.
Reference numerals illustrate:
1. a leaky cable; 2. a lifting appliance; 3. monitoring an electronic tag; 31. enabling a controller; 4. a management module; 41. a first management unit; 42. a network management center; 43. a signal combiner; 44. a second management unit; 5. a matching terminal; 6. and (5) fault positioning electronic tags.
Detailed Description
The embodiment of the application discloses a leakage cable falling monitoring system.
Example 1
Referring to fig. 1, a leaky cable drop monitoring system comprises a monitoring electronic tag 3 and a management module 4, wherein the leaky cable 1 specifically refers to a leaky coaxial cable which has the functions of transmitting communication signals and radiating communication signals to the outside, and controlled electromagnetic wave energy can be uniformly radiated outwards or received inwards along a line through controlling an opening of an external conductor, so that the coverage of an electromagnetic field blind area is realized, and the purpose of smooth mobile communication is achieved. In this embodiment, the leaky cable 1 is used to cover the electromagnetic field blind area in the tunnel, so that the mobile communication in the tunnel is smooth, and the normal wireless communication requirement when the train runs to the tunnel is ensured.
In a specific implementation, the lifting appliance 2 is used for fixing the leakage cable 1, the lifting appliance 2 is a buckle-type lifting appliance 2, namely one end of the lifting appliance 2 is fixedly connected to the wall of the tunnel through a screw, and one end, far away from the wall, of the lifting appliance 2 is provided with a lifting appliance cover and a clamping groove for clamping the leakage cable 1.
The monitoring electronic tag is attached to the leaky cable 1, the management module 4 is used for sending a first identification signal, if a feedback signal sent by the monitoring electronic tag 3 is received, the leaky cable 1 is judged to fall off, and the monitoring electronic tag 3 and the management module 4 are in communication connection through the leaky cable 1. Specifically, the monitoring electronic tag 3 is an RFID electronic tag, and is attached to the leaky cable 1 through an adhesive. In the first embodiment, an enabling controller 31 is attached to the inner side of the lifting appliance cover, so that the enabling controller 31 covers the monitoring electronic tag 3 when the lifting appliance cover is buckled, and the monitoring electronic tag 3 and the management module 4 are shielded in communication when the leakage cable 1 is not dropped; in the second embodiment, one side of the enabling controller 31 is attached to the monitoring electronic tag 3 by an adhesive, and one side of the enabling controller 31 far away from the monitoring electronic tag 3 is fixedly connected to a wall, so that the flexibility of installation is increased, the installation is not limited by the lifting appliance 2, and meanwhile, the installation mode is convenient for selecting the installation at the position where the monitoring electronic tag 3 is in optimal communication with the management module 4, so that the longer leaky cable 1 is monitored under the same energy consumption. When the leaky cable 1 falls off, the monitoring electronic tag 3 and the management module 4 are in the optimal communication state, so that the accuracy of a feedback signal received by the management module 4 and sent by the monitoring electronic tag 3 is further improved, and the probability of false alarm of the monitoring electronic tag 3 is reduced; in the third embodiment, one side of the enabling controller 31 is attached to the monitoring electronic tag 3 through an adhesive, and one side of the enabling controller 31 away from the monitoring electronic tag 3 is fixedly connected with the screws on the lifting appliance 2. Specifically, the enabling controller 31 may be welded with the screws on the spreader 2 or welded to the metal shims, and the metal shims are placed between the screws and the nuts. Specifically, the material of the enable controller 31 is metal.
The management module 4 includes a first management unit 41, a network management center 42, and a signal combiner 43, where an output end of the signal combiner 43 is electrically connected to the first management unit 41 through an electric wire, and an input end of the signal combiner 43 is connected to the leaky cable 1 through an electric wire. In the present embodiment, the signal combiner 43 is a different-band combiner. Specifically, the signal combiner 43 is configured to transmit the identification signal sent by the first management unit 41 to the leaky cable 1, so that the identification signal is transmitted to the monitoring electronic tag 3 through the leaky cable 1, receive the feedback signal sent by the monitoring electronic tag 3, and transmit the feedback signal to the first management unit.
The frequencies of the feedback signal and the communication signal are different, specifically, the first management unit 41 filters the communication signal transmitted by the leaky cable 1 and receives the feedback signal sent by the monitoring electronic tag 3, and the network management center 42 is used for judging that the leaky cable 1 falls off and outputting the position information of the monitoring electronic tag 3.
Specifically, the enabling controller 31 is configured to mask the communication between the first management unit 41 and the monitoring electronic tag 3.
The first management unit 41 is an RFID reader in this embodiment, and is configured to receive the feedback signal and the communication signal transmitted by the leaky cable 1, determine the position information of the monitoring electronic tag 3 of the feedback signal, and upload the feedback signal and the position information of the monitoring electronic tag 3 to the network management center 42. In the present embodiment, the first management unit 41 communicates with the network management center 42 via ethernet. Because the base station signal cannot effectively cover the interior of the railway tunnel, a repeater is arranged between the first management unit 41 and the network management center 42, the repeater is signal source amplifying equipment and is used for amplifying the base station signal, so that the amplified base station signal can realize communication signal coverage in the tunnel through the leaky cable 1, and the communication quality between the base station and the train is enhanced.
In this embodiment, the monitoring electronic tag 3 communicates with the first management unit 41, specifically, the first management unit 41 periodically sends an RFID first identification signal, the period of the first management unit 41 sending the RFID first identification signal is set by people, if the leaky cable 1 falls off, the function of enabling the controller 31 to shield the communication between the monitoring electronic tag 3 and the first management unit 41 disappears, at this time, the monitoring electronic tag 3 receives the RFID first identification signal and sends a feedback signal to the first management unit 41, and the first management unit 41 receives the feedback signal, and determines that the leaky cable 1 at the position of the monitoring electronic tag 3 falls off.
The network management center 42 is used for counting and managing the position information of the monitoring electronic tag 3 sent by the first management unit 41.
The management module 4 further includes a second management unit 44, and in an embodiment, one end of the leaky cable 1, which is far away from the first management unit 41, is connected to the second management unit 44 through an electric wire, and the second management unit 44 and the first management unit 41 are the same RFID reader-writer, so that the details are not repeated here. The second management unit 44 is in communication connection with the monitoring electronic tag 3 through the leaky cable 1, the second management unit 44 is in communication connection with the network management center 42, and accuracy of signal transmission is improved in a mode that the first management unit 41 and the second management unit 44 are respectively connected to two ends of the leaky cable 1, so that the leaky cable 1 with a longer length can be monitored conveniently.
In another embodiment, one end of the leaky cable 1 far away from the first management unit 41 is connected with the matching terminal 5 through an electric wire, and specifically, the matching terminal 5 is impedance matching, so as to inhibit reflection of the feedback signal of the monitoring electronic tag 3, that is, absorb the feedback signal of the monitoring electronic tag 3, and prevent the reflected feedback signal from affecting the monitoring result.
The implementation principle of the embodiment 1 is as follows: the enabling controller 31 is used for shielding communication between the monitoring electronic tag 3 and the first management unit 41, when the leaky cable 1 falls off, the enabling controller 31 is separated from the monitoring electronic tag 3, the shielding effect of the enabling controller 31 on the communication between the monitoring electronic tag 3 and the first management unit 41 is eliminated, and at the moment, the first management unit 41 can acquire a feedback signal sent by the monitoring electronic tag 3; when the first management unit 41 receives the feedback signal sent by the monitoring electronic tag 3, the network management center 42 determines that the leaky cable 1 at the position information of the monitoring electronic tag 3 falls off by confirming the position information of the monitoring electronic tag 3, manual inspection is not needed in the whole process, and timely monitoring on the falling of the leaky cable 1 is facilitated.
Example 2
Referring to fig. 2, the difference between this embodiment and embodiment 1 is that a drop cable drop monitoring system further includes a fault location electronic tag 6, where the fault location electronic tag 6 is attached to the drop cable, the installation position of the fault location electronic tag 6 is flexible, and the fault location electronic tag can be attached to any position on the drop cable 1, and signal transmission is performed with a first management unit 41 through the drop cable 1, the first management unit 41 is configured to send a second identification signal to the fault location electronic tag 6 through the drop cable 1, the fault location electronic tag 6 is configured to send a return signal to the first management unit 41 after receiving the second identification signal, and the first management unit 41 is configured to receive the return signal and generate alarm information based on the signal strength of the acquired return signal, and send the return information corresponding to the return signal and the alarm information to the network management center 42.
The leaky cable 1 may be attached with 1 or more fault location electronic tags 6, specifically, the first management unit 41 generates alarm information based on a difference between the initial signal strength of the received return signal and the real-time signal strength.
If a plurality of fault locating electronic tags 6 are attached, in a specific implementation, the fault position of the leaky cable 1 can be judged according to the signal intensity. For example, if 10 fault location electronic tags 6 are attached to one leaky cable 1, and 10 fault location electronic tags 6 are attached to the leaky cable 1 sequentially in order, if a fault such as a break occurs in the leaky cable 1 between the 5 th fault location electronic tag 6 and the 6 th fault location electronic tag 6, the standing wave ratio at the faulty portion of the leaky cable 1 becomes large, so that the signal strength of the return signal received by the first management unit 41 from the 6 th fault location electronic tag 6 becomes weak, and thus the fault location of the leaky cable 1 can be roughly judged manually according to the rule.
In the specific implementation, the fault locating electronic tag 6 can realize locating judgment of the fault of the leaky cable 1 according to the mode of mounting the leaky cable 1 at a fixed position without affecting the communication of the fault electronic tag, so that maintenance personnel can maintain in time according to the fault locating.
In this embodiment, the signal of the fault location electronic tag 6 does not need to be shielded, and after receiving the RFID first identification signal sent by the first management unit 41, a return signal is sent to the first management unit 41, and when the leaky cable 1 falls off, the monitoring electronic tag 3 sends a feedback signal to the first management unit 41, and the first management unit 41 receives the feedback signal and the return signal sent by the fault location electronic tag 6.
The implementation principle of the embodiment 2 is as follows: the fault locating electronic tag 6 is used for locating the position of the fault leaky cable 1 and sending a return signal to the first management unit 41, and the first management unit 41 generates alarm information of the fault of the leaky cable 1 through the return signal, so that a worker can send maintenance personnel to maintain the fault leaky cable 1 in time according to the alarm information.
The embodiment of the application also discloses a leakage cable falling monitoring method.
Referring to fig. 3, a method for monitoring drop of a leaky cable, wherein a fault locating electronic tag and a plurality of monitoring electronic tags are attached to a leaky cable, includes:
s100, transmitting an RFID first identification signal.
The management module comprises a reader-writer and a network management center, and sends a periodic RFID first identification signal to the monitoring electronic tag through the reader-writer by a leaky cable, wherein the period of the RFID first identification signal is preset by a person.
S101, acquiring initial signal strength and real-time signal strength of a return signal sent by the fault location electronic tag.
The management module sends a periodic RFID first identification signal to the fault location electronic tag through the leaky cable by the reader-writer, and the fault location electronic tag is activated after receiving the RFID first identification signal and sends a return signal to the management module through the leaky cable;
the initial signal strength is the signal strength of a return signal of the fault location electronic tag, which is obtained by the fault location electronic tag which is initially installed on the leaky cable through the management module, and in the specific implementation, the fault location electronic tag can be one or a plurality of fault location electronic tags;
the real-time signal strength is the signal strength of the return signal of the fault positioning electronic tag, which is obtained by the leaky cable according to a certain time period.
S102, acquiring difference information between the real-time signal strength and the initial signal strength.
The management unit subtracts the obtained difference value between the real-time signal strength and the initial signal strength, and obtains difference information. In a specific implementation, when the management module sends the RFID first identification signal strength to be unchanged, the real-time signal strength is always smaller than the initial signal strength.
S103, judging whether the difference information accords with a preset threshold condition, and generating alarm information when the difference information accords with the preset threshold condition.
In a specific implementation, if a leaky cable fails, namely, the leaky cable breaks or the surface is damaged, and the like, the standing wave ratio at the leaky cable fault is increased, and the standing wave ratio is increased to cause the reflection of a return signal, so that the signal strength of the return signal is reduced, and at the moment, the real-time signal strength of the return signal is smaller than the initial signal strength, and then alarm information can be generated through difference information, so that the leaky cable fault can be monitored in time. Specifically, the difference information is the real-time signal strength minus the initial signal strength.
Specifically, referring to fig. 4, the alarm information includes emergency alarm information, important alarm information and general alarm information, and the step of judging whether the difference information meets a preset threshold condition, and generating the alarm information when the difference information meets the preset threshold condition includes:
s103.1, judging whether the difference information is smaller than a preset emergency alarm threshold value.
The management module divides the alarm information into an emergency alarm threshold, an important alarm threshold and a general alarm threshold, the emergency alarm threshold represents a serious fault of the leaky cable, emergency processing is needed, and step S103 can know that when the leaky cable is in serious fault, the standing wave ratio seriously affects the reflection of the return signal, so that whether the leaky cable fault needs emergency processing is judged by comparing the difference information with the emergency alarm threshold.
And S103.2, if yes, generating emergency alarm information.
If the difference information exceeds the emergency alarm threshold, the cable leakage fault is judged to need emergency treatment, and the network management center of the management module generates emergency alarm information to remind a background worker of needing to dispatch a person as soon as possible to repair the fault cable leakage. For example, if the emergency alarm threshold is set to-40 dbm, if the difference value information is-50 dbm, the leakage cable fault condition is proved to be emergency, and the network management center generates emergency alarm information at the moment.
And S103.3, if not, judging whether the difference information is smaller than a preset important alarm threshold value.
If the difference information is larger than the emergency alarm threshold, the management module compares the difference information with the important alarm threshold to judge whether the cable leakage fault needs to be maintained in time.
S103.4, if yes, generating important alarm information.
The important alarm information refers to the leaky cable fault degree smaller than the emergency alarm information, at this time, the background staff still needs to dispatch maintenance staff to carry out maintenance and inspection on the spot, based on the step S103.2, if the important alarm threshold is set to be-20 dbm, if the difference information is-30 dbm, the management module generates the important alarm information because-40 dbm < -30dbm < -20 dbm.
And S103.5, if not, judging whether the difference information is smaller than a preset general alarm threshold value.
S103.6, if yes, generating general alarm information.
The general alarm information indicates that the leaky cable has a fault, but the influence of the fault on the return signal of the fault positioning electronic tag is small, and at the moment, a background staff still needs to dispatch maintenance staff to check and maintain the leaky cable. Based on the step S103.4, if the general alarm threshold is set to-10 dbm, if the difference information is-15 dbm, the management module generates the general alarm information because-20 dbm < -15dbm < -10 dbm.
If the difference information is larger than a preset general alarm threshold, the management module judges that the leaky cable has no fault, and no action is performed, so that alarm information is not generated.
Specifically, the emergency alert threshold is less than the important alert threshold, which is less than the general alert threshold.
S103.7, acquiring positioning coding information of the return signal sent by the fault positioning electronic tag.
In a specific implementation, the fault location electronic tag is one or more, wherein the location coding information is stored in the fault location electronic tag.
S103.8, searching positioning information corresponding to the positioning coding information sent by the fault positioning electronic tag in a preset fault positioning electronic tag database.
In an embodiment, a fault locating electronic tag is attached to the leaky cable, if the leaky cable fails, the management module acquires locating information of the fault locating electronic tag, and the locating information indicates that the leaky cable where the fault locating electronic tag is located fails at the moment, so that the position of the failed leaky cable can be monitored in time; in another embodiment, a plurality of fault location electronic tags are mounted on the leaky cable, if the leaky cable fails, the plurality of fault location electronic tags are beneficial to improving the accuracy of the position of the leaky cable fault point, for example, if 10 fault location electronic tags are mounted on one leaky cable, the 10 fault location electronic tags are sequentially mounted on the leaky cable according to the sequence, if faults such as breakage and the like occur in the leaky cable between the 5 th fault location electronic tag and the 6 th fault location electronic tag, the standing wave ratio of the fault location of the leaky cable becomes larger, so that the signal intensity of a return signal received by the first management unit from the 6 th fault location electronic tag becomes weaker gradually, and the fault location of the leaky cable can be roughly judged manually according to the rule.
S103.9, uploading the positioning information to a leaky cable abnormal database.
And the management module uploads the positioning information to the leaky cable abnormal database, so that background staff can determine the leaky cable positioning information through the leaky cable abnormal database.
S104, uploading the alarm information to a preset alarm database.
The alarm database is used for storing alarm information, so that background personnel can timely dispatch maintenance personnel to check and maintain the fault cable according to the alarm information and the positioning information in the alarm database.
Referring to fig. 3, S200, it is determined whether a feedback signal sent by a preset monitoring electronic tag based on an RFID first identification signal is acquired, where the feedback signal includes coding information of the monitoring electronic tag.
Specifically, the monitoring electronic tags are pre-stored with coded information, the coded information of each electronic tag has uniqueness, and when the monitoring electronic tags receive the RFID first identification signal, a feedback signal is sent to the reader-writer of the management module.
And S300, if yes, judging that the leaky cable corresponding to the monitoring electronic tag falls off.
Specifically, when the leaky cable is not dropped, the monitoring electronic tag is covered by the enabling controller made of metal materials, so that communication between the monitoring electronic tag and the management module is shielded, when the leaky cable is dropped, the enabling controller is separated from the monitoring electronic tag, the monitoring electronic tag can send a feedback signal according to the RFID first identification signal, and when the reader-writer of the management module monitors the feedback signal sent by the monitoring electronic tag, the leaky cable corresponding to the monitoring electronic tag is judged to be dropped.
S400, based on the coding information of the monitoring electronic tags, acquiring the position information of the monitoring electronic tags corresponding to the falling positions of the falling leakage cables, the quantity information of all the monitoring electronic tags on the falling leakage cables and the position information of all the monitoring electronic tags on the falling leakage cables.
The management module can determine the position information of the drop-off position of the drop cable by acquiring the position information of the monitoring electronic tags, so that the drop cable can be processed in time, and the number information and the position information of the rest monitoring electronic tags on the drop cable are acquired at the same time, so that the drop cable is monitored integrally.
Specifically, referring to fig. 5, the step of acquiring, based on the encoded information of the monitoring electronic tags, the position information of the monitoring electronic tags corresponding to the drop position of the dropped drop cable, the number information of all the monitoring electronic tags on the dropped drop cable, and the position information of all the monitoring electronic tags on the dropped drop cable includes:
s401, acquiring grouping information in a preset monitoring electronic tag database, wherein the grouping information comprises grouping information of cables, number information of monitoring electronic tags on each cable, coding information of all the monitoring electronic tags on each cable and position information of all the monitoring electronic tags.
The monitoring electronic tags on the leaky cable and the leaky cable are manually grouped in advance, so that the management module is convenient for managing the leaky cable and the monitoring electronic tags on the leaky cable.
The monitoring electronic tag database is preset manually, namely the monitoring electronic tags are coded manually, the positions of the monitoring electronic tags are recorded, and the number of the monitoring electronic tags on each leaky cable, the coding information and the position information of each monitoring electronic tag on each leaky cable are stored in the monitoring electronic tag database correspondingly.
S402, searching position information corresponding to the coding information sent by the monitoring electronic tag at the drop position of the dropped leaky cable in the grouping information.
The network management center of the management module can acquire the position information of the corresponding monitoring electronic tag by retrieving the coding information in the grouping information.
S403, acquiring the position information of other monitoring electronic tags in the same group as the monitoring electronic tag at the falling position of the falling leakage cable.
Based on step S402, the network management center of the management module can obtain the position information of other monitoring electronic tags located on the same leaky cable with the position information of one monitoring electronic tag.
S404, acquiring the number information of the monitoring electronic tags of the group where the monitoring electronic tags of the drop-off position of the drop-off leaky cable are located.
Similarly, based on step S402, the network management center of the management module can obtain the number information of all the monitoring electronic tags on the leaky cable through the position information of one monitoring electronic tag.
S500, uploading the quantity information of the monitoring electronic tags, the position information of all the monitoring electronic tags on the dropped leaky cable and the position information of the monitoring electronic tags at the dropped part of the leaky cable to a leaky cable abnormal database.
The background staff can check the position information of the dropped leaky cable and the whole information of the dropped leaky cable through the leaky cable abnormal database, so that maintenance staff can be dispatched in time to process and maintain the dropped leaky cable.
The implementation principle of the leakage cable drop monitoring method provided by the embodiment of the application is as follows: when the management module monitors the feedback signal of the monitoring electronic tag, the drop cable where the monitoring electronic tag is located is judged to drop, the management module obtains the position information of the monitoring electronic tag through the coding information of the feedback signal, and the effects of monitoring drop cable and positioning the drop cable position in time without manual inspection can be achieved.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (7)
1. The utility model provides a monitoring system is drops to cable which leaks which characterized in that: the monitoring electronic tag comprises a monitoring electronic tag (3) and a management module (4), wherein the monitoring electronic tag (3) is in communication connection with the management module (4) through a leaky cable (1), the monitoring electronic tag (3) is attached to the leaky cable (1), an enabling controller (31) is covered on the monitoring electronic tag (3), and the enabling controller (31) is used for shielding communication between the monitoring electronic tag (3) and the management module (4) when the leaky cable (1) is not detached and separating from the monitoring electronic tag (3) when the leaky cable (1) is detached, so that the communication shielding effect between the monitoring electronic tag (3) and the management module (4) is eliminated;
the management module (4) is used for sending a first identification signal and judging that the leaky cable (1) falls off when receiving a feedback signal returned by the monitoring electronic tag (3) based on the first identification signal;
the management module (4) is further used for determining and outputting the position information of the monitoring electronic tag (3) based on the feedback signal after the drop of the leaky cable (1) is judged;
the management module (4) comprises a first management unit (41), a network management center (42) and a signal combiner (43), wherein the signal combiner (43) is electrically connected with the first management unit (41), and the signal combiner (43) is used for transmitting an identification signal sent by the first management unit (41) to the leaky cable (1) so that the identification signal is transmitted to the monitoring electronic tag (3) through the leaky cable (1), receiving a feedback signal sent by the monitoring electronic tag (3) and transmitting the feedback signal to the first management unit (41); the feedback signal is at a different frequency than the communication signal;
the first management unit (41) is in communication connection with the network management center (42), and the first management unit (41) is used for receiving the feedback signal, determining the position information of the monitoring electronic tag (3) corresponding to the feedback signal, and uploading the feedback signal and the position information of the monitoring electronic tag (3) to the network management center (42);
the network management center (42) is used for judging that the leaky cable (1) falls off and outputting the position information of the monitoring electronic tag (3);
the fault locating electronic tag (6) is mounted on the leaky cable (1), the first management unit (41) is used for sending a second identification signal to the fault locating electronic tag (6) through the signal combiner (43), the fault locating electronic tag (6) is used for sending a return signal to the first management unit (41) after receiving the second identification signal, the first management unit (41) is used for receiving the return signal and generating alarm information based on the acquired signal strength of the return signal, the return information corresponding to the return signal and the alarm information are sent to the network management center (42), and the network management center (42) is used for judging that the leaky cable (1) breaks down based on the alarm information.
2. The leakage cable drop monitoring system according to claim 1, wherein one end of the lifting appliance (2) is fixedly connected with the wall, and one end of the lifting appliance (2) far away from the wall is provided with a lifting appliance cover and a clamping groove for clamping the leakage cable (1), and the leakage cable drop monitoring system is characterized in that: the enabling controller (31) is attached to the inner side of the lifting appliance cover, and when the lifting appliance cover is buckled, the enabling controller (31) covers the monitoring electronic tag (3);
or (b)
One side of the enabling controller (31) is attached to the monitoring electronic tag (3), and one side of the enabling controller (31) away from the monitoring electronic tag (3) is fixedly connected to a wall or the lifting appliance (2).
3. The leaky cable drop monitoring system according to claim 1, wherein: the management module (4) further comprises a second management unit (44), the second management unit (44) is electrically connected with one end, far away from the first management unit (41), of the leaky cable (1), the second management unit (44) is in communication connection with the monitoring electronic tag (3) through the leaky cable (1), and the second management unit (44) is in communication connection with the network management center (42).
4. A leaky cable drop monitoring system as claimed in claim 3, wherein: one end of the leakage cable (1) far away from the first management unit (41) is electrically connected with a matching terminal (5), and the matching terminal (5) is used for absorbing feedback signals of one end of the leakage cable (1) far away from the management module (4).
5. The utility model provides a leak cable monitoring method that drops which characterized in that is equipped with a plurality of monitoring electronic tags on a leak cable, the method includes:
transmitting an RFID first identification signal;
judging whether a feedback signal sent by the preset monitoring electronic tag based on the RFID first identification signal is acquired or not, wherein the feedback signal comprises coding information of the monitoring electronic tag;
if yes, judging that the leaky cable corresponding to the monitoring electronic tag falls off;
acquiring position information of the monitoring electronic tags corresponding to the falling positions of the fallen leaky cables, the number information of all the monitoring electronic tags on the fallen leaky cables and the position information of all the monitoring electronic tags on the fallen leaky cables based on the coding information of the monitoring electronic tags;
uploading the number information of the monitoring electronic tags, the position information of all the monitoring electronic tags on the dropped leaky cable and the position information of the monitoring electronic tags at the dropped part of the leaky cable to a leaky cable abnormal database;
the leakage cable is further provided with a fault positioning electronic tag, and after the step of sending the RFID first identification signal, the method further comprises the following steps:
acquiring initial signal intensity and real-time signal intensity of a return signal sent by the fault location electronic tag;
acquiring difference information between the real-time signal strength and the initial signal strength;
judging whether the difference information accords with a preset threshold value condition, and generating alarm information when the difference information accords with the preset threshold value condition;
and uploading the alarm information to a preset alarm database.
6. The drop cable monitoring method of claim 5, wherein the alarm information includes emergency alarm information, important alarm information and general alarm information, the step of determining whether the difference information meets a preset threshold condition, and when the difference information meets the preset threshold condition, the step of generating alarm information includes:
judging whether the difference information is smaller than a preset emergency alarm threshold value or not;
if yes, emergency alarm information is generated;
if not, judging whether the difference information is smaller than a preset important alarm threshold value;
if yes, generating important alarm information;
if not, judging whether the difference information is smaller than a preset general alarm threshold value;
if yes, generating general alarm information;
acquiring positioning coding information of a return signal sent by the fault positioning electronic tag;
searching positioning information corresponding to positioning coding information sent by a fault positioning electronic tag in a preset fault positioning electronic tag database;
and uploading the positioning information to the leaky cable abnormal database.
7. The drop cable monitoring method according to claim 6, wherein the step of acquiring the position information of the drop cable corresponding to the dropped position of the drop cable, the number information of all the dropped monitoring electronic tags on the drop cable, and the position information of all the dropped monitoring electronic tags on the drop cable based on the encoded information of the monitoring electronic tags comprises:
acquiring grouping information in a preset monitoring electronic tag database, wherein the grouping information comprises grouping information of the leaky cables, the number information of the monitoring electronic tags on each leaky cable, coding information of all the monitoring electronic tags on each leaky cable and position information of all the monitoring electronic tags;
searching position information corresponding to the coding information sent by the monitoring electronic tag at the drop position of the dropped cable in the grouping information;
acquiring position information of other monitoring electronic tags in the same group as the monitoring electronic tag at the drop position of the dropped leakage cable;
and acquiring the quantity information of the monitoring electronic tags of the group where the monitoring electronic tags of the drop-off part of the drop cable are located.
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