CN201174772Y - Repeater having leak cord monitoring function - Google Patents
Repeater having leak cord monitoring function Download PDFInfo
- Publication number
- CN201174772Y CN201174772Y CNU2008200325978U CN200820032597U CN201174772Y CN 201174772 Y CN201174772 Y CN 201174772Y CN U2008200325978 U CNU2008200325978 U CN U2008200325978U CN 200820032597 U CN200820032597 U CN 200820032597U CN 201174772 Y CN201174772 Y CN 201174772Y
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- repeater
- cable
- module
- detection module
- coaxial cable
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Abstract
The utility model discloses a repeater with the function of monitoring a leaky coaxial cable, wherein a signal inserter and a leaky coaxial cable detection module are arranged inside a far-end machine or a near-end machine; the signal inserter is arranged on a connecting line of the far-end machine or the near-end machine and the leaky coaxial cable and connected with the leaky coaxial cable detection module; the leaky coaxial cable detection module is connected with a control module of the far-end machine through a data wire and provided with a transmitting slave module and a receiving main module; the transmitting slave module transmits a radio frequency signal with fixed output power and transmits the radio frequency signal to the receiving main module of the leaky coaxial cable detection module on the other end through the leaky coaxial cable; and the operating state of the leaky coaxial cable is obtained through calculation of the loss value of the transmission process. The leaky coaxial cable detection module is embedded into the repeater, so as to make the repeater have the function of detecting the operating state of the leaky coaxial cable; and the repeater has a simple structure and low cost, and the realized functions are very practical.
Description
One, technical field
The utility model relates to a kind of use leakage coaxial cable (promptly leaking cable) as the repeater that signal covers, and is mainly used in the demanding communication system of communication covering quality, as railway GSM-R communication system field such as communicate by letter with city underground.
Two, technical background
Wireless communication system generally adopts the repeater as signal relay and overlay device in the tunnel, receive and the antenna of emission uses in the tunnel and then is subjected to a lot of restrictions as wireless signal, and coaxial leakage cable can be in the tunnel homogeneous radiation, be not subjected to the influence of factor such as landform bending, so more the repeater is adopted and is leaked cable and cover means as wireless signal in the tunnel.
Because environment is abominable in the tunnel, along with leaking the cable increase of service time, leak cable and can produce distortion, aging and joint is loosening gradually, make that to leak in the cable signal communication not smooth, cause covering signal reduction in the tunnel, can not satisfy the radio communication requirement.Therefore whether leakage cable working status is normal, directly has influence on the quality of overlay area, repeater signal quality.Railway digital mobile communication system (GSM-R), carried the transmission of Source of Railway Communication and Signalling and control signal, therefore whether normal as the repeater and the leaky coaxial cable work of wireless communication signals overlay device, directly have influence on the quality quality of GSM-R signal of communication, have influence on safety of railway traffic.
At present, the repeater is only monitored the operating state of equipment itself, can not monitor the operating state of leaking cable.When the leakage cable breaks down, even the repeater is working properly, also can cause communication quality to descend, even communication disruption.Present leakage cable detection system is a separate equipment, and remote monitoring needs independently passage, also needs independently power module, cost height, installation inconvenience.If be embedded into the repeater equipment the inside leaking the cable detection system, one that becomes inside, repeater leaks the cable detection module, then can greatly reduce system engineering cost and maintenance cost, and improved system's operational reliability, therefore in the repeater, increase the leakage cable working status monitoring, fault is in time alarmed, and is reliable and stable extremely important to ensureing Railroad Communication System.
Three, utility model content
Technical problem to be solved in the utility model provides a kind of repeater of leaking cable monitoring function module that embedded, and this repeater has reduced system engineering cost and maintenance cost, and has improved system's operational reliability.
The two kinds of modes that are divided into are monitored to leaking cable in the repeater:
1. remote termination is monitored the leakage cable of its connection
2. the near-end machine is with Lou cable to monitor to the base station
Wherein first kind has the repeater of leaking the cable monitoring function, comprise remote termination, in remote termination, be provided with the signal inserter and leak the cable detection module, described signal inserter is located at remote termination and leaks on the connecting line of cable, the signal inserter links to each other with leakage cable detection module, leaks the cable detection module and links to each other with the control module of remote termination by data wire.
Above-mentioned leakage cable detection module has transmitter module and receiver module, transmitter module emission one is the radiofrequency signal of power output fixedly, be transferred to the receiver module that leaks the cable detection module on another remote termination through leaking cable, obtain the leak operating state of cable by the loss value that calculates transmission course.
The leakage cable state information that leakage cable detection module obtains is delivered to control module by the RS485 internal bus, and the control module handle sews state information and repeater information is uploaded to discharging-directly station network management center O MC-R together.
General and the same site, base station of optical fiber repeater near-end machine is if the output of base station is to sew detection module and finish the leakage cable is carried out condition monitoring through leaking the cable radiation, then also can increasing in the near-end machine.Link to each other by leaking cable between the near-end machine of this repeater and remote termination, it also all is provided with the signal inserter and leaks the cable detection module in near-end machine and remote termination, described signal inserter is located on the connecting line of near-end machine and coupler, the signal inserter links to each other with leakage cable detection module, leaks the cable detection module and links to each other with control module by data wire.
Above-mentioned leakage cable detection module has transmitter module and receiver module, the transmitter module emission one of near-end machine is the radiofrequency signal of power output fixedly, be transferred to the receiver module that leaks the cable detection module on the remote termination through leaking cable, obtain the leak operating state of cable by the loss value that calculates transmission course.
The leakage cable state information that leakage cable detection module obtains is delivered to control module by the RS485 internal bus, and the control module handle sews state information and repeater information is uploaded to discharging-directly station network management center O MC-R together.
Advantage of the present utility model:
1, (remote termination, near-end machine) is embedded in Lou cable detection module in the repeater, makes the repeater have the leakage cable working status measuring ability.
2, by the signal inserter repeater signal with leak the cable detection signal and keep apart, and be inserted into Lou and transmit in the cable leaking a cable detection signal, avoided the signal interference.
3, leak cable state-detection data directly by the transmission of repeater remote monitoring network management path, do not need independent leakage cable to detect network management path.
4 and the repeater have a power supply.
Four, description of drawings
Fig. 1 is the schematic diagram that the utility model is used in remote termination;
Fig. 2 is the schematic diagram that the utility model is used in the near-end machine.
Five, embodiment
1, remote termination is monitored the leakage cable of its connection
As seen from Figure 1, remote termination mainly comprises control module, optical transceiver, low noise amplifier LNA and power amplifier PA, and optical transceiver is connected antenna port by a data feedback channel with a down going channel respectively; Low noise amplifier LNA is serially connected in the down going channel between optical transceiver and the antenna port, and power amplifier PA is located at the data feedback channel between antenna port and the optical transceiver, and antenna port links to each other with two leakage cables respectively by electric bridge again.
The utility model is (in the empty frame) on the basis of former remote termination, has increased the signal inserter and has leaked the cable detection module.Leak the cable detection module and be responsible for detecting the Lou state of cable, detection signal and data are linked into Lou in the cable by the signal inserter.
Leak the cable detection module and be divided into emission from module and reception primary module, its operation principle is as follows: leak cable and detect emission from the fixing radiofrequency signal of power output Po of module emission one, through leaking the leakage cable detection reception primary module that cable is transferred to the other end, primary module detects the input power Pin of received RF signal, through exchanges data, primary module deducts input power Pin with the power output Po that obtains, and just can obtain the leak loss value of cable.By the variable quantity (with the normal value contrast) of analyzing the loss value, whether the operating state that just can judge cable Lou is normal, and sends the alarm signal of different brackets such as minor alarm, significant alarm and high severity alarm to remote monitoring center according to the size of loss variable quantity.
The leakage cable state information that leakage cable detection module obtains is delivered to control module by RS485 repeater internal bus.The control module handle sews state information and repeater information is sent to discharging-directly station network management center O MC-R together.
2, the near-end machine is with Lou cable to monitor to the base station
General and the same site, base station of optical fiber repeater near-end machine is if the output of base station is to sew detection module and finish the leakage cable is carried out condition monitoring through leaking the cable radiation, then can increasing in the near-end machine.
Its operation principle frame such as Fig. 2:
Similar with remote termination leakage cable detection module operation principle, will leak the cable detection signal by signal inserter and coupler and be transferred to leakage cable, the leakage cable detection module with an other end communicates again, the cable status data detects thereby finish Lou.
Leak cable detection data and be delivered to control module, be transferred to network management center by network management unit leaking the cable status data then by inner RS485 bus.
Wherein leak cable detection module the key technical indexes:
1) operating frequency range: 420MHz～450MHz
2) leaky cable detection range: 100m～3000m
3) allow signal attenuation scope: 80dB (routine); 100dB (high-power option)
4) minimum detection sensitivity :-80dBm
5) certainty of measurement: 2dB
6) original signal of communication is inserted loss:＜0.5dB
7) nominal characteristic impedance: 50 ± 2 Ω
8) voltage standing wave ratio: in working band≤1.3
9) main network management function:
The measurement pad value is set;
Claims (4)
1, a kind of repeater with leakage cable monitoring function, comprise remote termination and near-end machine, it is characterized in that: it is provided with the signal inserter and leaks the cable detection module in the repeater, described signal inserter is located at the repeater and leaks on the connecting line of cable, the signal inserter links to each other with leakage cable detection module, leaks the cable detection module and links to each other with the control module of remote termination by data wire.
2, the repeater with leakage cable monitoring function according to claim 1, it is characterized in that: described leakage cable detection module has emission from module and reception primary module, transmitter module emission one is the radiofrequency signal of power output fixedly, through leaking the leakage cable detection receiver module that cable is transferred to the other end, obtain the leak operating state of cable by the loss value that calculates transmission course.
3, the repeater with leakage cable monitoring function according to claim 1 and 2, it is characterized in that: the leakage cable state information that leakage cable detection module obtains is delivered to control module by the RS485 internal bus, and the control module handle sews state information and repeater information is uploaded to discharging-directly station network management center O MC-R together.
4, the repeater with leakage cable monitoring function according to claim 1 and 2 is characterized in that: leak the cable detection module and powered by the repeater power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200325978U CN201174772Y (en) | 2008-02-21 | 2008-02-21 | Repeater having leak cord monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200325978U CN201174772Y (en) | 2008-02-21 | 2008-02-21 | Repeater having leak cord monitoring function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201174772Y true CN201174772Y (en) | 2008-12-31 |
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ID=40201903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200325978U Expired - Fee Related CN201174772Y (en) | 2008-02-21 | 2008-02-21 | Repeater having leak cord monitoring function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201174772Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102014427A (en) * | 2010-11-30 | 2011-04-13 | 中兴通讯股份有限公司 | Method and device for reporting state information by using network equipment |
| CN102572906A (en) * | 2012-01-19 | 2012-07-11 | 北京达因瑞康电气设备有限公司 | Leakage communication system with fault location and method |
| CN103036632A (en) * | 2012-04-16 | 2013-04-10 | 贺疆巍 | Online fault location method and equipment of radio frequency transmission line |
| CN103344880A (en) * | 2013-05-24 | 2013-10-09 | 南京泰通科技有限公司 | Leaky cable/antenna feeder real-time monitoring apparatus and working method thereof |
| CN104735711A (en) * | 2015-03-26 | 2015-06-24 | 昆山美博中芯投资管理企业（有限合伙） | Novel GSM-R leaky-coaxial-cable detection device |
-
2008
- 2008-02-21 CN CNU2008200325978U patent/CN201174772Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102014427A (en) * | 2010-11-30 | 2011-04-13 | 中兴通讯股份有限公司 | Method and device for reporting state information by using network equipment |
| CN102014427B (en) * | 2010-11-30 | 2015-07-22 | 中兴通讯股份有限公司 | Method and device for reporting state information by using network equipment |
| CN102572906A (en) * | 2012-01-19 | 2012-07-11 | 北京达因瑞康电气设备有限公司 | Leakage communication system with fault location and method |
| CN103036632A (en) * | 2012-04-16 | 2013-04-10 | 贺疆巍 | Online fault location method and equipment of radio frequency transmission line |
| CN103036632B (en) * | 2012-04-16 | 2014-05-21 | 贺疆巍 | Online fault location method and equipment of radio frequency transmission line |
| CN103344880A (en) * | 2013-05-24 | 2013-10-09 | 南京泰通科技有限公司 | Leaky cable/antenna feeder real-time monitoring apparatus and working method thereof |
| CN104735711A (en) * | 2015-03-26 | 2015-06-24 | 昆山美博中芯投资管理企业（有限合伙） | Novel GSM-R leaky-coaxial-cable detection device |
| CN104735711B (en) * | 2015-03-26 | 2018-10-16 | 雷功书 | Novel GSM-R leaks cable detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 Termination date: 20140221 |