TWI766425B - System and method for detecting damage of telecommunication cables - Google Patents

Abstract

A system and method for detecting damage of telecommunication cables are provided, which utilize broadband loops and telephone loops inside telecommunication cables, combined with broadband DSLAM, SVG and telephone switches, as sensors for detecting cable damage and immediately transmit the disconnection status to a cable diagnostic module through a broadband connection status collection module and a telephone status collection module. The diagnostic module activates a broadband and telephone distance measurement module to test the distance of the break point and test auxiliary loops to confirm cable status. If a telecommunication cable is confirmed to be broken, the distance of the break point is converted into latitude and longitude coordinates and address through a cable topology information module to notify the cable maintenance personnel. Without additional equipment, the present invention can achieve the purposes of real-time and accurate detection of damaged cables, and effectively protecting cable assets and improving service quality.

Description

Telecommunication cable damage detection system and method

The present invention relates to a telecommunication cable damage detection system and method, in particular, using the broadband loop and the local telephone loop provided inside the telecommunication cable as a distance measuring tool for detecting the damage of the telecommunication cable and detecting the distance of the breakpoint . When the above-mentioned circuit is disconnected, the network management equipment or the local telephone exchange will get the real-time alarm information. After the diagnosis is confirmed as a damage event, the single-ended line test (SELT) of the broadband circuit and the metal circuit of the local telephone circuit will be started. Metallic Line Test (MELT) calculates the breakpoint distance, and then converts the breakpoint coordinates from the graphics module, and informs the maintenance personnel through SMS to achieve comprehensive and real-time telecommunication cable protection.

Generally speaking, in order to provide fixed network services, telecommunication cables are widely distributed from urban areas to suburban areas. The trunk cables are routed from the telecommunication equipment room to the junction box through the underground tunnel, and the distribution cable is tapped from the junction box to the distribution box. Extending from the distribution box to the user's home, whether it is laid in an underground pipeline or an overhead telecommunication cable, it may be cut by thieves. How to prevent theft and cutting is an important issue for telecom operators.

The trunk cables are laid out from the underground tunnel of the equipment room to the junction box, all of which are laid in the underground pipes. Generally, telecom operators will build a telecom cable inflation system to ensure that the inside of the telecom cable is dry to maintain good electrical characteristics. The air pressure sensor will be installed in the manhole and hand hole of the telecommunication cable inflation system. The air pressure value inside the telecommunication cable is sent back to the central office equipment. The maintenance personnel can infer whether the telecommunication cable is broken or damaged and the corresponding manhole and hand hole positions from the change of pressure. Therefore, it can also be used to judge whether the telecommunication cable is stolen or not. Cut.

The distribution cable exits from the junction box. The starting point is the underground pipe, and it is led to the ground through the lead-in hole. If it is in a remote area, it may extend to the overhead pole. The dry cable is filled with glue to protect the electrical characteristics of the copper conductor, so it cannot be like The trunk cable can know whether the telecommunication cable has been stolen or cut from the pressure change of the inflation system, and the distribution cable is widely distributed. If additional detection equipment is installed, it will cost a lot of money and get twice the result with half the effort. Therefore, most telecom operators fail to monitor the distribution cable. state, leading to an endless stream of stolen clipping incidents.

The purpose of the present invention is to provide a telecommunication cable damage detection system and method, which utilizes the broadband circuit and the local telephone circuit installed in the telecommunication cable to collect disconnection information and activate the digital subscriber line access multiplexer (Digital Subscriber Line Access Multiplexer, DSLAM) and local telephone loop test equipment, test the breakpoint distance and start the test auxiliary loop to test the status of the telecommunication cable, and confirm whether it is a damage event such as stealing or digging through the diagnostic module. If it is damaged In case of an event, the telecommunication cable number and breakpoint distance are sent to the graphics module to be converted into breakpoint coordinates and addresses, and the maintenance personnel are notified to provide telecommunication cable damage alarms and breakpoint locations in an original way and analysis method. To achieve the protection effect of telecommunication cables.

The present invention uses the broadband loop and the local telephone loop installed inside the telecommunication cable as the tool for disconnection detection and breakpoint ranging, and does not require an external detection circuit, so some pre-operations are required. The following describes the setting monitoring of the present invention Loop and ranging methods.

Set the local call loop as the monitoring loop: when the voice gateway (SIP Voice Gateway, SVG) and the local switch detect a short circuit in the monitoring loop and the duration of the short circuit exceeds the threshold, the The monitoring circuit will enter the standby (parking) state. If the monitoring circuit is released from the short circuit, the monitoring circuit will return to the normal state. Using this feature, the monitoring circuit is short-circuited in the wiring box at the end of the telecommunication cable, so that the monitoring circuit can be short-circuited. The loop enters the standby state. If the telecommunication cable is damaged, the short circuit will be removed, the monitoring circuit will return to the normal state, and the SVG and the local switch will send out a notification message immediately. With this feature, a specific local circuit is set as the monitoring circuit.

Set the broadband circuit as a broadband disconnection detection sensor: due to the DSLAM in any broadband circuit connection (port link up), disconnection (port link down) or disconnection due to power failure (Loss of Power, LPR), etc. Corresponding notification messages will be sent out in the event of an event. Therefore, if the telecommunication cable is damaged, the DSLAM will issue a disconnection notification message. to rule out power outages.

Local telephone circuit disconnection ranging method: The local telephone circuit test adopts the GR909 MELT specification, and the electrical characteristics of the local telephone circuit are tested as a tool for obstacle testing and elimination. The electrical characteristics include the DC/AC voltage, resistance and capacitance of the local telephone circuit. Using the characteristic that the capacitance value between the AB lines of the local telephone circuit is proportional to the length of the local telephone circuit, before the wiring box is short-circuited, first record the length of the monitoring circuit with the graphics module, and start the MELT test to record the capacitance value between the AB lines As a reference value, when a disconnection event occurs, test the capacitance value at the time of disconnection again to calculate the disconnection distance.

Broadband loop disconnection ranging method: According to the ITU-T G.996.2 specification, DSLAM has the SELT test function. When the DSLAM detects a broadband loop disconnection, the SELT test is started, and the loop length can be obtained. This loop length is the breakpoint distance. The above-mentioned ITU-T is the abbreviation of International Telecommunications Union Telecommunication Sector.

The telecommunication cable damage detection system of the present invention is composed of six modules, namely, a setting module, a disconnection event collection module, a test module, a map data module, a notification module, and a diagnosis module.

The flow of the telecommunication cable damage detection method performed by the above six modules includes the following steps:

(1) The setting module can set at least one telecommunication cable running through the same path to the same monitoring group as required; set the local telephone monitoring loop in the monitoring group, and short-circuit the monitoring loop in the wiring box at the end of the telecommunication cable, To make the monitoring loop enter the standby state, as a local call disconnection sensor; set all broadband loops in the monitoring group as monitoring loops and set an alarm threshold. The alarm threshold can be set as the disconnection ratio or number of broadband loops ;Set auxiliary loops, because there may not be many broadband loops or no broadband loops in the monitoring group, so set multiple (eg at least 5) local telephone loops with good quality as auxiliary loops for auxiliary judgment.

(2) The disconnection event collection module includes the broadband disconnection event collection module and the local telephone disconnection event collection module. The broadband disconnection event collection module collects the notification messages sent by the DSLAM. When the number of broadband circuits that have been disconnected within a preset length of time but not due to power failure exceeds the threshold, it will send a broadband disconnection event to the diagnostic module. Group; the local call disconnection event collection module collects the notification message that the state of the monitoring loop sent by the SVG and the local switch is changed from standby to normal. When such a notification message is received, the local call disconnection event will be sent to the diagnosis module. .

(3) When receiving a broadband disconnection event or a local call disconnection event, the diagnostic module starts the test module to test the status of the broadband circuit, the local call circuit and the auxiliary circuit, and then integrates the above test results to confirm whether there is a telecommunication cable Damaged wire. In addition, after confirming that it is a damage event, the diagnosis module transmits the serial number and breakpoint distance of the telecommunication cable to the graphics module.

(4) The graphics module calculates the latitude and longitude coordinates and address of the breakpoint according to the number of the telecommunication cable and the distance between the breakpoints and the topology of the telecommunication cable layout, and returns the latitude and longitude coordinates and addresses to the diagnostic module. Group.

(5) After the diagnosis module receives the latitude and longitude coordinates and address of the breakpoint, it will be forwarded to the alarm issuing module.

(6) The alarm release module sends short messages and e-mails, and informs the maintenance personnel of the telecommunication cables of the latitude and longitude coordinates and addresses of the breakpoints.

1: Telecom cable damage detection system

2: Maintenance staff

10: Telecom cables

11: Broadband loop

12: Monitoring loop

13: Auxiliary circuit

20: DSLAM

25: Modem

40: SVG/local switch

45: Telephone

50: wiring box

52: Automatic short-circuit device

100: Setting the module

200: Disconnection event collection module

201: Broadband disconnection event collection unit

202: Local call disconnection event collection unit

300: Test Module

301: Broadband Loop Test Unit

302: Monitoring loop test unit

303: Auxiliary loop test unit

400: Graphics module

500: Notification Module

600: Diagnostic Module

S30~S48: Method steps

FIG. 1 is a schematic diagram of a telecommunication cable according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a telecommunication cable damage detection system according to an embodiment of the present invention.

FIG. 3 is a flowchart of a method for detecting damage to a telecommunication cable according to an embodiment of the present invention.

The present invention utilizes the broadband loop and the local telephone loop inside the telecommunication cable, with the broadband DSLAM, SVG and the local telephone switch, as a sensor and a breakpoint ranging device for detecting the disconnection of the telecommunication cable. If the state of the local telephone monitoring loop changes, the disconnection event will be immediately transmitted to the diagnostic module for telecommunication cable diagnosis. After it is confirmed as a telecommunication cable damage event, the map data module will convert the disconnection distance into latitude and longitude coordinates and addresses, and then Notify telecommunications cable maintenance personnel. The present invention can achieve instant and accurate judgment of damage events such as theft, cutting or digging damage of the telecommunication cable without additional equipment, effectively protect the telecommunication cable assets and improve the service quality of the fixed network.

FIG. 1 is a schematic diagram of a telecommunication cable according to an embodiment of the present invention. As shown in FIG. 1 , the telecommunication cable 10 includes at least a plurality of broadband loops and a plurality of local telephone loops, and the local telephone loops at least include a plurality of monitoring loops and a plurality of auxiliary loops. FIG. 1 only shows one broadband loop 11 , one monitoring loop 12 and one auxiliary loop 13 as an example, but in fact, the number of broadband loops 11 , monitoring loops 12 and auxiliary loops 13 can be adjusted according to application requirements.

The broadband loop 11 can be, for example, a very high-speed digital subscriber line (VDSL). The head end of the broadband loop 11 is connected to the DSLAM 20 and the tail end is connected to the modem 25 at the user end. Both the monitoring loop 12 and the auxiliary loop 13 can be public switched telephone network (PSTN) or VoIP loops. If it is an Internet phone loop, its head end is connected to SVG. The tail end of the monitoring loop 12 is connected to the automatic short-circuit device 52 in the wiring box 50 , and the tail end of the auxiliary loop 13 is connected to the telephone set 45 at the user end through the wiring box 50 .

The SVG/local switch 40 in FIG. 1 represents the SVG and/or the local switch connected to the head ends of the monitoring circuit 12 and the auxiliary circuit 13 . proportional.

Each loop in the telecommunication cable 10 (such as the broadband loop 11 , the monitoring loop 12 or the auxiliary loop 13 ) is a twisted pair, wherein the two signal wires that make up each pair of twisted pairs are called A and B respectively. Wire.

FIG. 2 is a schematic diagram of a telecommunication cable damage detection system 1 according to an embodiment of the present invention. The telecommunication cable damage detection system 1 includes a setting module 100, a disconnection event collection module 200, a test module 300, a graphics module 400, a notification module 500, and a diagnosis module 600, wherein the disconnection event collection module The module 200 includes a broadband disconnection event collection unit 201 and a local call disconnection event collection unit 202 . The test module 300 includes a broadband loopback testing unit 301 , a monitoring loopback testing unit 302 , and an auxiliary loopback testing unit 303 . The disconnection event collection module 200 is the electrical connection or communication connection setting module 100 , the diagnosis module 600 is the electrical connection or communication connection disconnection event collection module 200 , the test module 300 , the graphics module 400 , and the notification module The group 500 is electrically connected or communicatively connected to the diagnosis module 600 . Each of the modules shown in FIG. 2 can be hardware, software or firmware, and if it is software or firmware, it is installed in an electronic device that can execute the software or firmware.

FIG. 3 is a flowchart of a method for detecting damage to a telecommunication cable according to an embodiment of the present invention. The method shown in FIG. 3 can be performed by each module and each unit of the telecommunication cable damage detection system 1 .

First, in step S30, the setting module 100 sets at least one telecommunication cable running through the same path as a monitoring group, and selects the broadband loop, the monitoring loop and the auxiliary loop in the monitoring group, wherein the The structure may be the same as the telecommunication cable 10 of FIG. 1 . set module The setting and selection of 100 in step S30 can be completed by the maintenance personnel 2 through the setting module 100 , or can be completed automatically by the setting module 100 . Specifically, the selection of the setting module 100 in step S30 can be subdivided into the following steps:

(1) All broadband loops in the telecommunication cables of the selected monitoring group are regarded as broadband disconnection detection sensors. The head end of each broadband loop is connected to a DSLAM (eg, DSLAM 20 ), and the tail end of each broadband loop is connected to a modem (eg, modem 25 ) at the user end. In another embodiment, broadband loops may not be included in the telecommunication cables of the monitoring group.

(2) Select a plurality of local telephone loops with good quality in the telecommunication cables of the monitoring group as monitoring loops. The head end of each monitoring loop is connected to the SVG or the local telephone exchange, and the tail end is connected to the automatic short circuit module in the wiring box (for example, the automatic short circuit module 52 in the wiring box 50 ). The automatic short-circuit module can connect the A line and the B line of the monitoring circuit, so that the monitoring circuit is short-circuited and enters the standby state.

(3) Select another plurality (for example, at least 5) local telephone circuits with good quality included in the telecommunication cables of the monitoring group as auxiliary circuits. The head end of each auxiliary circuit is also connected to the SVG or the local telephone exchange, and the tail end of each auxiliary circuit is connected to the telephone set of the user end (such as the telephone set 45), so the auxiliary circuit still retains the local telephone function. In another embodiment, the auxiliary circuit may not be selected.

The above-mentioned local telephone circuit of good quality means that the local telephone circuit selected as the monitoring circuit or auxiliary circuit must run through the entire length of the telecommunication cable to which it belongs and be undamaged. In addition, when there is no call, the DC and AC voltages between the A line and the ground, the DC and AC voltages between the B lines and the ground, and the DC and AC voltages between the A and B lines of each local telephone circuit must be less than the preset value. Threshold value. Furthermore, the insulation resistance of line A to ground, the insulation resistance of line B to ground, and the insulation resistance between line A and line B of each local telephone circuit must be greater than another preset threshold value. Only the local call circuit that meets all the above conditions can be selected as the monitoring circuit or auxiliary circuit.

Next, in step S32, the broadband disconnection event collecting unit 201 of the disconnection event collecting module 200 receives a notification message from the DSLAM (eg, the DSLAM 20) connected to the head end of the broadband loop, and the market of the disconnection event collecting module 200 receives a notification message. The disconnection event collection unit 202 receives notification messages from the SVG and/or the local switch (such as the SVG/local switch 40) connected to the head end of the monitoring loop, wherein the local switch can actively provide notification messages, or The disconnection event collection unit 202 provides a notification message after inquiring. Then, in steps S34 and S36, the broadband disconnection event collecting unit 201 and the local telephone disconnection event collecting unit 202 send out disconnection events according to the notification message.

Specifically, when the telecommunication cables of the monitoring group are stolen or cut, the broadband circuit, the monitoring circuit and the auxiliary circuit are all broken due to damage. For each broadband circuit, the broadband disconnection event collecting unit 201 determines whether the broadband circuit has been disconnected according to whether a port link down notification message of the broadband circuit is received from the DSLAM in step S34, and determines whether the broadband circuit has been disconnected according to whether Receive a Loss of Power (LPR) notification message of the broadband circuit from the DSLAM to determine whether the broadband circuit is disconnected due to a power failure. When the number of broadband circuits that have been disconnected but not due to power failure (that is, have received a disconnection notification message but have not received a disconnection notification message due to power failure) within a preset length of time exceeds the threshold , the broadband disconnection event collecting unit 201 sends a broadband disconnection event to the diagnosis module 600 in step S36 , otherwise, the flow returns to step S32 . The threshold may be the number of broadband loops that have been disconnected but not due to power failure, or the proportion of these broadband loops in all broadband loops in the monitoring group.

On the other hand, when the monitoring circuit is damaged and disconnected, it will return to the normal state from the standby state due to the short-circuit release, and the SVG or local exchange connected to the head end will send a corresponding notification message. The local call disconnection event collecting unit 202 checks whether such notification message is received in step S34, if yes, the local call disconnection event collecting unit 202 sends the local call disconnection event to the diagnosis module 600 in step S36, otherwise, The flow returns to step S32.

Next, in step S38, the diagnosis module 600 receives the broadband disconnection event or the local call disconnection event, and thus activates the test module 300. The broadband loop testing unit 301 , the monitoring loop testing unit 302 and the auxiliary loop testing unit 303 of the test module 300 test the broadband loop, the monitoring loop and the auxiliary loop in the monitoring group respectively, so as to obtain the data of the broadband loop, the monitoring loop and the auxiliary loop respectively. status, and then the status of these loops is returned to the diagnosis module 600 .

Specifically, in step S38, after the test module 300 is activated, the broadband loop test unit 301 activates all DSLAMs connected to all broadband loops in the monitoring group, and checks whether any broadband loops are connected through the DSLAMs. link up). If there is a broadband loop being connected, the test ends, and the broadband loop test unit 301 returns the status of the broadband loop being connected to the diagnosis module 600 . If no broadband loop is being connected, the broadband loop test unit 301 controls the DSLAMs to perform a Single Ended Line Test (SELT) on each broadband loop to obtain the length of each broadband loop (ie, from the head The length from the end to the breakpoint, if the loop is not broken, it is the length from the head end to the tail end), and the broadband loop status returned by the broadband loop testing unit 301 to the diagnosis module 600 includes the length of each broadband loop. If the broadband loop test unit 301 finds that there is no response from the DSLAM and has sent an LPR notification message when the DSLAM is activated, the broadband loop status provided by the broadband loop test unit 301 will also include this event. In addition, if there is no broadband loop in the telecommunication cables of the monitoring group, the status of the broadband loop returned by the broadband loop test unit 301 to the diagnosis module 600 will include this condition.

On the other hand, in step S38, after the test module 300 is activated, the monitoring circuit testing unit 302 starts the GR909 Metallic Line Test (MELT) to obtain the electrical characteristics of each monitoring circuit in the monitoring group. Features include capacitance between A and B, DC and AC voltages from A to ground, DC and AC voltages from B to ground, DC and AC voltages between A and B, and insulation from A to ground Resistance, insulation resistance of wire B to ground, and insulation resistance between wire A and wire B. Since the capacitance value between the A line and the B line of the monitoring loop is proportional to the length of the monitoring loop, the monitoring loop testing unit 302 can obtain the capacitance obtained by the above MELT according to the normal capacitance value recorded in advance. value to calculate the length of each monitoring loop. The status of the monitoring loops returned by the monitoring loop testing unit 302 to the diagnosis module 600 includes the above-mentioned length, voltage and insulation resistance of each monitoring loop.

On the other hand, in step S38, after the test module 300 is activated, the auxiliary circuit testing unit 303 activates MELT to obtain the electrical characteristics of each auxiliary circuit in the monitoring group, the content of the electrical characteristics of the auxiliary circuit and the electrical characteristics of the monitoring circuit. Features are the same. The capacitance between line A and line B of the auxiliary loop is the sum of the capacitance of the telephone connected to its tail and the capacitance of the auxiliary loop itself. The capacitance of most telephones on the market is known, and the auxiliary loop The ratio of its own capacitance value to its length is also known, so the auxiliary loop testing unit 303 can estimate the length of each auxiliary loop according to the capacitance value obtained by MELT. The status of the auxiliary loops returned by the auxiliary loop testing unit 303 to the diagnosis module 600 includes the above-mentioned lengths of the auxiliary loops, and various voltages and insulation resistances in their electrical characteristics.

Next, in step S40 , the diagnosis module 600 obtains the status of the broadband loop, the monitoring loop and the auxiliary loop from the test module 300 .

In step S42, the diagnosis module 600 determines whether the telecommunication cables in the monitoring group are damaged according to the states of the loops. If there is damage, the process proceeds to step S44, otherwise the process returns to step S32.

Specifically, in step S42, the diagnosis module 600 analyzes the status of all broadband circuits in the monitoring group, and may have one of the following results:

(a) At least one broadband circuit is being connected, so the diagnosis is that the telecommunication cable is not broken.

(b) The DSLAM has no response and has sent an LPR notification message, so the diagnosis is that the telecommunication cable is not broken.

(c) The difference between the maximum length and the minimum length in all broadband loops is greater than the threshold value, so the diagnosis is that the telecommunication cable is not broken.

(d) The difference between the maximum length and the minimum length in all broadband loops is less than or equal to the threshold value, so the diagnosis is that the telecommunication cable may be broken.

(e) There is no broadband loop in the telecommunication cables of the monitoring group, so it is impossible to judge.

In addition, in step S42, the diagnosis module 600 analyzes the status of all monitoring loops in the monitoring group, and there may be one of the following results:

(a) The state of at least one monitoring circuit is normal, so the diagnosis is that the telecommunication cable is not broken. The above-mentioned normal state means that the monitoring loop is not broken (eg its length is equal to the normal length) and the obstacles described below do not appear.

(b) All monitoring loops are broken (for example, their length is less than the normal length) or there is an obstacle, but the difference between the maximum length and the minimum length in all monitoring loops is greater than the threshold value, so it is diagnosed that the telecommunication cable is not broken. The above obstacle means that the DC or AC voltage of line A to ground, the DC or AC voltage of line B to ground, or the DC or AC voltage between line A and line B of the monitoring circuit is greater than another threshold value, or, the monitoring circuit The insulation resistance of line A to ground, the insulation resistance of line B to ground, or the insulation resistance between line A and line B is less than another threshold value.

(c) All monitoring circuits are broken or blocked, and the difference between the maximum length and the minimum length in all monitoring circuits is less than or equal to the threshold value, so it is diagnosed that the telecommunication cable may be broken.

Furthermore, in step S42, the diagnosis module 600 analyzes the status of all auxiliary circuits in the monitoring group, and may have one of the following results:

(a) At least one auxiliary circuit is in normal state, so it is diagnosed that the telecommunication cable is not broken. The above state is normal means that the auxiliary circuit is not broken (for example, its length is equal to the normal length) and there is no obstacle described below.

(b) All auxiliary circuits have been broken (for example, their length is less than the normal length) or an obstacle has occurred, so it is diagnosed that the telecommunication cable may be broken, wherein the obstacle judgment standard of the auxiliary circuit is the same as that of the monitoring circuit.

(c) The auxiliary circuit is not selected in the monitoring group, so it cannot be judged.

Based on the above results, in step S42, if the result (d) or (e) of the broadband loop, the result (c) of the monitoring loop, and the result (b) or (c) of the auxiliary loop occur simultaneously, the diagnosis module 600 determines that If the telecommunication cable of the monitoring group is damaged, the flow goes to step S44, otherwise the flow returns to step S32.

Next, in step S44, the diagnosis module 600 calculates the breakpoint distance of the telecommunication cables in the monitoring group (that is, from the head end of the telecommunication cables) according to the length of each broadband loop, the monitoring loop and the auxiliary loop in the state. The distance to the breakpoint), for example, the diagnosis module 600 can calculate the average value of the lengths of all broadband loops, monitoring loops and auxiliary loops as the breakpoint distance.

In step S46, the map module 400 calculates the corresponding distance of the breakpoint according to the number of the telecommunication cable in the monitoring group, the topology of the telecommunication cable in the monitoring group, and the distance of the breakpoint. The breakpoint coordinates (such as latitude and longitude coordinates) and breakpoint address.

In step S48, the notification module 500 notifies the maintenance staff 2 that the telecommunication cables in the monitoring group are damaged by means of text messages, instant messages and/or emails, and notifies the maintenance staff 2 of the breakpoint coordinates and breakpoint addresses. In addition, if the telecommunication cable is damaged due to unauthorized cutting, the notification module 500 can notify the police of the breakpoint coordinate and breakpoint address, so as to provide information for solving the case.

Compared with the traditional anti-theft system and method, the telecommunication cable damage detection system and method provided by the present invention has the following advantages:

1. The present invention can provide real-time telecommunication cable breakage diagnosis and breakpoint detection functions only through broadband DSLAM, SVG, local telephone switches and telecommunication cable loops and other equipment, using network management information to add value, without the need for additional equipment. Real-time and comprehensive detection and diagnosis can be achieved.

2. The present invention utilizes the broadband circuit and the local telephone circuit provided inside the telecommunication cable as the disconnection sensor. When the telecommunication cable is stolen, cut or damaged by cutting, the disconnection event can be obtained immediately through the sensor.

3. The present invention uses the G.996.2 SELT technology of the broadband DSLAM and the GR909 MELT technology of the SVG and the local exchange to calculate the breakpoint distance.

4. The present invention introduces a graphics module, and calculates the latitude and longitude coordinates and addresses of the breakpoints from the distance of the breakpoints. In addition to notifying the maintenance personnel, the police can also be notified at the same time to provide case-solving information.

5. The present invention reduces the construction cost and difficulty of telecommunication cable protection. The introduction of breakpoint ranging technology can instantly estimate the breakpoint location, and simultaneously notify maintenance personnel and the police, thereby increasing the probability of solving the case.

6. The present invention can reduce the personnel cost of telecommunication cable maintenance, and can also ensure the reliability and stability of the copper cable loop, thereby improving the maintenance efficiency, and its economic benefits are very obvious.

The above detailed description is for specific descriptions of feasible embodiments of the present invention, but the embodiments are not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the technical spirit of the present invention shall be included in this case. within the scope of the patent.

To sum up, this case is not only innovative in terms of technical ideas, but also has many of the above-mentioned effects that the conventional methods cannot achieve. It has fully met the requirements of the statutory invention patent for novelty and progress. I urge your bureau to approve this patent application Cases, in order to encourage invention, to appreciate morality.

1: Telecom cable damage detection system

2: Maintenance staff

100: Setting the module

200: Disconnection event collection module

201: Broadband disconnection event collection unit

202: Local call disconnection event collection unit

300: Test Module

301: Broadband Loop Test Unit

302: Monitoring loop test unit

303: Auxiliary loop test unit

400: Graphics module

500: Notification Module

600: Diagnostic Module

40: SVG/local switch

Claims (11)

A telecommunication cable damage detection system, comprising: The setting module is used for selecting a plurality of local telephone loops included in at least one telecommunication cable passing through the same path as the monitoring loop; The disconnection event collection module is used to receive the first notification message from the first voice gateway or the first local exchange connected to the first end of the monitoring loops, and then send out a local call disconnection according to the first notification message line events; a test module for testing the monitoring loops to provide the status of the monitoring loops; and The diagnosis module is used to activate the test module to obtain the status of the monitoring loops when receiving the local call disconnection event, and then judge whether the telecommunication cables are damaged according to the status of the monitoring loops. The telecommunication cable damage detection system as claimed in claim 1, wherein the second end of each of the monitoring loops is a short circuit, and the disconnection event collection module receives a short-circuit state indicating at least one of the monitoring loops When the first notification message has been released, the local call disconnection event is issued. The telecommunication cable damage detection system as claimed in claim 1, wherein the status of the monitoring loops includes the length, voltage and insulation resistance of each monitoring loop, and the diagnosis module is based on the length, voltage and insulation resistance to determine whether the telecommunication cables are damaged. The telecommunication cable damage detection system of claim 1, wherein, The telecommunication cables further include a plurality of broadband loops, the first end of each broadband loop is connected to the digital subscriber line access multiplexer, and the second end of each broadband loop is connected to the modem of the user end; The disconnection event collection module is multiplexed for receiving a second notification message from the digital subscriber line access multiplexers, and then sending a broadband disconnection event according to the second notification message; The test module is multiplexed for testing the broadband loops to provide the status of the broadband loops; and The diagnostic module is used to activate the test module to obtain the status of the broadband loops and the monitoring loops when receiving the broadband disconnection event or the local call disconnection event, and then according to the broadband loops and the monitoring loops Wait for the status of the monitoring loop to determine whether the telecommunication cables are damaged. The telecommunication cable damage detection system according to claim 4, wherein the disconnection event collection module determines whether each of the broadband circuits is disconnected and whether it is disconnected due to a power outage according to the second notification message, so as to pre- Within a set length of time, when the number of broadband loops that have been disconnected but not due to power failure exceeds the threshold, the disconnection event collection module will issue the broadband disconnection event. The telecommunication cable damage detection system of claim 4, wherein, The status of the broadband loops includes the length of each of the broadband loops; The status of the monitoring loops includes the length, voltage and insulation resistance of each monitoring loop; and The diagnostic module judges whether the telecommunication cables are damaged according to the length of each broadband loop and the length, voltage and insulation resistance of each monitoring loop. The telecommunication cable damage detection system of claim 1, wherein, The setting module is multiplexed for selecting a plurality of local telephone circuits included in the telecommunication cables that are not selected as the monitoring circuit as auxiliary circuits, and the first end of each auxiliary circuit is connected to the second voice gateway or the second local exchange, and the second end of each auxiliary circuit is connected to the telephone set of the user end; The test module is multiplexed for testing the auxiliary circuits to provide the status of the auxiliary circuits; and The diagnosis module is used to activate the test module to obtain the status of the monitoring loops and the auxiliary loops when receiving the local call disconnection event, and then judge according to the statuses of the monitoring loops and the auxiliary loops whether such telecommunication cables are damaged. The telecommunication cable damage detection system of claim 7, wherein, The status of the monitoring loops includes the length, voltage and insulation resistance of each monitoring loop; The status of the auxiliary loops includes the length, voltage and insulation resistance of each of the auxiliary loops; and The diagnostic module judges whether the telecommunication cables are damaged according to the length, voltage and insulation resistance of each of the monitoring loops and each of the auxiliary loops. The telecommunication cable damage detection system of claim 1, wherein, The telecommunication cables further include a plurality of broadband loops, the first end of each broadband loop is connected to the digital subscriber line access multiplexer, and the second end of each broadband loop is connected to the modem of the user end; The setting module is multiplexed for selecting a plurality of local telephone circuits included in the telecommunication cables that are not selected as the monitoring circuit as auxiliary circuits, and the first end of each auxiliary circuit is connected to the second voice gateway or the second local exchange, and the second end of each auxiliary circuit is connected to the telephone set of the user end; The disconnection event collection module is multiplexed for receiving a second notification message from the digital subscriber line access multiplexers, and then sending a broadband disconnection event according to the second notification message; The test module is multiplexed for testing the broadband loops and the auxiliary loops to provide the status of the broadband loops and the auxiliary loops; and The diagnosis module is used for starting the test module to obtain the status of the broadband circuits, the monitoring circuits and the auxiliary circuits when receiving the broadband disconnection event or the local telephone disconnection event, and then according to the Check the status of the broadband circuits, the monitoring circuits and the auxiliary circuits, and determine whether the telecommunication cables are damaged. The telecommunication cable damage detection system as claimed in claim 1, wherein the diagnosis module is used to calculate the breakage of the telecommunication cables according to the state of the monitoring loops when the telecommunication cables are determined to be damaged. point distance, and the telecommunication cable damage detection system includes: The map data module is used to calculate the breakpoint coordinates and breakpoint addresses corresponding to the breakpoint distances according to the topology of the telecommunication cables and the numbers and breakpoint distances of the telecommunication cables; and The notification module is used for notifying the maintenance personnel that the telecommunication cables are damaged, and notifying the maintenance personnel of the coordinates of the breakpoint and the address of the breakpoint. A telecommunication cable damage detection method, comprising: Selecting a plurality of local telephone loops included in at least one telecommunication cable running through the same path as monitoring loops; receive notification messages from the voice gateway or local exchange connected to the first end of those monitoring loops; Test the monitoring loops according to the notification message to obtain the status of the monitoring loops; and According to the status of the monitoring loops, determine whether the telecommunication cables are damaged.

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