CN216057018U - Head-tail locomotive reconnection communication equipment - Google Patents
Head-tail locomotive reconnection communication equipment Download PDFInfo
- Publication number
- CN216057018U CN216057018U CN202122608551.4U CN202122608551U CN216057018U CN 216057018 U CN216057018 U CN 216057018U CN 202122608551 U CN202122608551 U CN 202122608551U CN 216057018 U CN216057018 U CN 216057018U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- end machine
- fiber repeater
- optical
- repeater
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003137 locomotive effect Effects 0.000 title claims abstract description 67
- 238000004891 communication Methods 0.000 title claims abstract description 49
- 239000013307 optical fiber Substances 0.000 claims abstract description 138
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims description 89
- 238000012544 monitoring process Methods 0.000 claims description 24
- 239000000835 fiber Substances 0.000 claims description 20
- 230000001360 synchronised effect Effects 0.000 abstract description 7
- 230000006855 networking Effects 0.000 abstract description 3
- 230000002441 reversible effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The utility model provides a head-tail locomotive reconnection communication device, two optical fiber repeater far-end machines are respectively adopted between two stations at adjacent positions in the front and the back of a half interval, one of the two stations is accessed to an optical fiber repeater near-end machine of a front station, the other station is accessed to an optical fiber repeater near-end machine of a back station, and the front and the back adjacent optical fiber repeater far-end machines adopt an inter-control mode after the front connection is disconnected. The utility model utilizes the optical fiber repeater in the original wireless train dispatching communication system section to carry out networking, thus solving the weak field coverage problem of the reconnection communication of the locomotive at the head and the tail; the remote end machine of the interval optical fiber repeater is simultaneously controlled to be close to the end machine of the adjacent station optical fiber repeater, so that the working radio frequency of the remote end machine is locked to the working frequency of the interval where the head locomotive and the tail locomotive are located, and the high-quality transmission requirement of synchronous reconnection communication information of the head locomotive and the tail locomotive is met; the remote end machine of the optical fiber repeater realizes the interconnection function by adopting an inter-control mode after disconnection and front connection, reduces the mutual interference of all sections, and ensures the reconnection communication continuity of the head and tail locomotives at the interval positions.
Description
Technical Field
The utility model relates to the technical field of communication equipment of railway locomotives, in particular to head and tail locomotive reconnection communication equipment.
Background
In the railway mountainous area and the long and large ramp section of China, the traction power of one traditional locomotive is limited, in order to improve the transportation efficiency, a plurality of locomotives are often connected in a reconnection mode, a locomotive supplementing method is added at the front or the tail of the locomotive, and a plurality of locomotives are synchronously pulled to improve the passing capacity and speed. In order to ensure the mutual coordination and synchronous operation of locomotives, a reliable communication system must be established for the transmission of voice and information between locomotives, when the locomotives are adjacent or close to each other, a radio station can be directly used for communication, but when the locomotives are far away from each other, the communication cannot be directly formed under the influence of the terrain environment, and the communication system must be switched by ground equipment to form an end-to-end communication system. The communication between the head locomotive and the tail locomotive of the train is realized in various modes, and how to combine the actual conditions on site is considered from the aspect of investment saving, and the communication is unified with the standard of the field equipment as much as possible, so that the communication is convenient to maintain.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the prior art, the utility model aims to provide an end-to-end locomotive reconnection communication device to overcome the defects in the prior art.
In order to achieve the purpose, the utility model provides a head-tail locomotive reconnection communication device which comprises two near-end machines of optical fiber repeaters and four far-end machines of the optical fiber repeaters; the first optical fiber repeater near-end machine is arranged at the previous station, the second optical fiber repeater near-end machine is arranged at the next station, the first optical fiber repeater far-end machine and the second optical fiber repeater far-end machine are arranged in the first half section between the two stations, and the third optical fiber repeater far-end machine and the fourth optical fiber repeater far-end machine are arranged in the second half section between the two stations; the near-end machine of the first optical fiber repeater and the near-end machine of the second optical fiber repeater are connected with a station forwarding platform of the station through a directional coupler; the first optical fiber repeater remote terminal and the third optical fiber repeater remote terminal are accessed to the first optical fiber repeater near-end machine; the remote end machine of the second optical fiber repeater and the remote end machine of the fourth optical fiber repeater are accessed to the near end machine of the second optical fiber repeater; the first optical fiber repeater remote terminal and the second optical fiber repeater remote terminal are switched to an antenna through a first radio frequency switch; the remote end machine of the third optical fiber repeater and the remote end machine of the fourth optical fiber repeater are switched to an antenna through a second radio frequency switch; the first optical fiber repeater remote terminal and the first radio frequency switch are connected with the first optical module; the fourth optical fiber repeater remote terminal and the second radio frequency switch are connected with the second optical module; the first optical module is connected with the second optical module so as to realize a mutual control mode after the front connection is disconnected by remotely controlling the far-end machine of the optical fiber repeater in the front half interval and the rear half interval through the optical module.
Through the technical scheme, two optical fiber repeater far-end machines are respectively adopted at the adjacent positions of the front and the back of a half interval, one optical fiber repeater near-end machine is accessed to a front station, and the other optical fiber repeater near-end machine is accessed to a back station, so that the optical fiber repeater far-end machine in the interval is simultaneously controlled to be close to the optical fiber repeater in the adjacent station, the working radio frequency of the optical fiber repeater far-end machine in the interval is locked to be the working frequency of the interval where a main locomotive is located, and the high-quality transmission requirement of synchronous control information of the main locomotive and a slave locomotive is met; the remote end machines of the adjacent optical fiber repeater stations adopt a mutual control mode of breaking the front connection and breaking the back connection, and when a train runs near a break point, the break point is connected, so that the head-to-tail communication of the train is ensured; when the train leaves the breakpoint area, the connection is disconnected, the interconnection function of the remote end machine of the optical fiber repeater is realized, the mutual interference of all sections is reduced, and the reconnection conversation continuity of the reconnection locomotive at the half interval position is ensured.
As a further description of the head-to-tail locomotive reconnection communication device according to the present invention, preferably, the near-end unit of the optical fiber repeater includes a first duplexer, a transmitting end of the first duplexer is connected to a first further attenuator, the first further attenuator is connected to the first optical transmitter, and the first further attenuator is configured to provide a downlink signal input level corresponding to transmission; the receiving end of the first duplexer is connected with a second step attenuator, the second step attenuator is connected with the first optical receiver, and the second step attenuator is used for adjusting an uplink signal sent to the station repeater; the first optical transmitter and the first optical receiver are respectively connected with the first wavelength divider; the first step attenuator, the second step attenuator, the first optical transmitter, the first optical receiver and the first wavelength divider are respectively connected with the first monitoring module, and the first monitoring module is used for monitoring and setting all parameters through the computer terminal.
As a further description of the head-to-tail locomotive reconnection communication device according to the present invention, preferably, the remote end of the optical fiber repeater includes a second duplexer, a transmitting end of the second duplexer is connected to a low noise amplifier, and the low noise amplifier is connected to the second optical transmitter; the receiving end of the second duplexer is connected with the radio frequency switcher, the radio frequency switcher is connected with the power divider, and the power divider is connected with the second optical receiver; the second optical transmitter and the second optical receiver are respectively connected with the second wavelength divider; the low noise amplifier, the second optical transmitter, the second optical receiver, the power divider and the radio frequency switcher are respectively connected with a second monitoring module, and the second monitoring module is used for monitoring and setting all parameters through a computer terminal.
As a further description of the locomotive reconnection communication device according to the present invention, preferably, the first optical fiber repeater remote end machine and the third optical fiber repeater remote end machine are connected to the first optical fiber repeater near end machine through a wavelength division multiplexer; and the second optical fiber repeater remote terminal and the fourth optical fiber repeater remote terminal are accessed to the second optical fiber repeater near-end machine through a wavelength division multiplexer.
As a further description of the locomotive reconnection communication equipment of the utility model, preferably, the near-end unit of the optical fiber repeater operates in a power supply mode of-48 VDC or 220VAC, and the far-end unit of the optical fiber repeater operates in a power supply mode of 220VAC power supply, solar energy or remote power supply.
In order to achieve another object of the present invention, the present invention further provides an implementation method for communication by using the head-to-tail locomotive reconnection communication device, the implementation method includes the following steps:
step 1): the station repeater couples a part of the downlink radio frequency signal to a BS port of a near-end machine of the first optical fiber repeater through the directional coupler, and after filtering and amplifying processing, the level of the downlink radio frequency signal meets the level requirement of a transmitting end interface;
step 2): modulating a downlink radio frequency signal on an optical signal in a near-end machine of the first optical fiber repeater and transmitting the optical signal to a far-end machine of the first optical fiber repeater through an optical cable;
step 3): the first optical fiber repeater remote terminal converts the optical signal into a radio frequency signal, amplifies and filters the radio frequency signal, outputs the radio frequency signal from an MS port of the first optical fiber repeater, and transmits the radio frequency signal through an antenna.
The utility model has the following beneficial effects:
1. the utility model combines the condition that the current 450M train wireless train dispatching system of the railway adopts a large number of optical fiber repeaters, and utilizes the optical fiber repeaters in the original wireless train dispatching communication system section to carry out networking, thereby solving the weak field coverage problem of the communication of the reconnection locomotives.
2. The utility model adopts two far-end machines of the optical fiber repeater station respectively at the adjacent positions of the front and the back of the half interval, wherein one near-end machine of the optical fiber repeater station accessed to the front station and the other near-end machine of the optical fiber repeater station accessed to the back station, so that the far-end machine of the interval optical fiber repeater station is simultaneously controlled to be close to the near-end machine of the optical fiber repeater station of the adjacent station, the working radio frequency of the far-end machine of the interval optical fiber repeater station is locked to the working frequency of the interval where the main locomotive is located, and the high-quality transmission requirement of synchronous control information of the main locomotive and the slave locomotive is met.
3. The remote end machines of the adjacent optical fiber repeater stations in front and back adopt a mutual control mode of breaking the front connection and breaking the back connection, and break points are connected when a train runs near the break points, so that the head-to-tail communication of the train is ensured; when the train leaves the breakpoint area, the connection is disconnected, the interconnection function of the remote end machine of the optical fiber repeater is realized, the mutual interference of all sections is reduced, and the reconnection conversation continuity of the reconnection locomotive at the half interval position is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a head-tail locomotive reconnection communication device of the present invention.
FIG. 2 is a schematic structural diagram of a near-end unit of a fiber repeater according to the present invention.
FIG. 3 is a schematic structural diagram of a remote unit of a fiber-optic repeater according to the present invention.
Detailed Description
To further understand the structure, characteristics and other objects of the present invention, the following detailed description is given with reference to the accompanying preferred embodiments, which are only used to illustrate the technical solutions of the present invention and are not to limit the present invention.
As shown in fig. 1, an end-to-end locomotive reconnection communication device includes two near-end machines of optical fiber repeaters and four far-end machines of optical fiber repeaters; wherein, the first optic fibre repeater near-end machine 1 sets up at first station in the past, and the second optic fibre repeater near-end machine 2 sets up at the next station in the future, and first optic fibre repeater distal end machine 3 and second optic fibre repeater distal end machine 4 set up half interval before between two stations, and third optic fibre repeater distal end machine 5 and fourth optic fibre repeater distal end machine 6 set up half interval after between two stations.
As shown in FIG. 1, a first optical fiber repeater near-end machine 1 and a second optical fiber repeater near-end machine 2 are both connected with a station repeater platform of the station through a directional coupler.
As shown in FIG. 1, a first fiber-optic repeater remote terminal 3 and a third fiber-optic repeater remote terminal 5 access a first fiber-optic repeater near-end terminal 1; the second optical fiber repeater remote end machine 4 and the fourth optical fiber repeater remote end machine 6 are connected to the second optical fiber repeater near end machine 2; the remote end machine of the regional optical fiber repeater is simultaneously controlled to be close to the near end machine of the adjacent station optical fiber repeater, so that the working radio frequency of the regional optical fiber repeater is locked to be the working frequency of the region where the main locomotive is located, and the requirement of high-quality transmission of synchronous control information of the main locomotive and the auxiliary locomotive is met. The two optical fiber repeater far-end machines are connected to one optical fiber repeater near-end machine through a wavelength division multiplexer.
As shown in FIG. 1, the first remote optical fiber repeater station 3 and the second remote optical fiber repeater station 4 are switched to the antenna through a first RF switch 7; and the third optical fiber repeater remote end machine 5 and the fourth optical fiber repeater remote end machine 6 are switched to the antenna through a second radio frequency switch 9.
As shown in fig. 1, a first fiber optic repeater remote terminal 3 and a first radio frequency switch 7 are connected to a first optical module 8; the fourth optical fiber repeater remote terminal 6 and the second radio frequency switch 9 are connected with the second optical module 10; the first optical module 8 is connected with the second optical module 10, so that the optical module remotely controls the remote end machine of the optical fiber repeater in the first half interval and the second half interval to realize a mutual control mode after disconnection. When the train runs near the break point, the break point is connected, and the head-to-tail communication of the train is ensured; when the train leaves the breakpoint area, the connection is disconnected, the interconnection function of the remote end machine of the optical fiber repeater is realized, the mutual interference of all sections is reduced, and the reconnection conversation continuity of the reconnection locomotive at the half interval position is ensured.
The utility model combines the condition that the current 450M train wireless train dispatching system of the railway adopts a large number of optical fiber repeaters, utilizes the optical fiber repeaters in the original wireless train dispatching communication system interval to carry out networking, solves the weak field coverage problem of the communication of the reconnection locomotives, shares the antenna feeder system of the 450M wireless train dispatching communication system, realizes resource sharing, has uniform equipment shape and is convenient to maintain and use on site. Each station adopts a 450MHz simplex-duplex compatible B-standard station repeater, and a locomotive synchronous control wireless communication function is added on the basis of the function of a railway wireless train dispatching communication system, so that the head and tail locomotive reconnection communication voice service and the synchronous control data service are met. The different-frequency simplex communication mode is adopted between the head locomotive and the tail locomotive of the reconnection, the transmitting frequency of a station repeater is f2, and the receiving frequency is f4 during communication. The transmission frequency of the locomotive or portable station is f4, and the reception frequency is f 2. The remote terminal of the optical fiber repeater in the half-interval of the current station receives an f4 signal sent by a locomotive, and the remote terminal of the adjacent optical module in the half-interval of the rear station is remotely controlled by the optical module to switch an access antenna in a radio frequency mode, so that the high field coverage area of the optical fiber repeater is realized, the high field coverage of the rear station is cut off, and the reconnection conversation continuity of the combined train in the half-interval position is ensured.
The specific implementation process is as follows: as shown in fig. 1, when the locomotive enters the half-block area of the front station, the antenna connected with the first fiber optic repeater far-end machine 3 and the first radio frequency switch 7 receives the carrier f4 signal sent by the head locomotive platform, and the first fiber optic repeater far-end machine 3 transmits the signal to the first fiber optic repeater near-end machine 1 through the optical fiber to be converted into a radio frequency signal and coupled to the station repeater platform. Meanwhile, the first optical fiber repeater remote terminal 3 generates a control signal and is connected to the second optical module 10 through the first optical module 8 in a remote transmission mode, the third optical fiber repeater remote terminal 5 in the second station half-section area is controlled to be connected to the antenna through the second radio frequency switch 9, and meanwhile, the signal of the fourth optical fiber repeater remote terminal 6 is cut off. The station repeater station generates an f2 signal, the f2 signal is coupled to the near-end machine 1 of the first optical fiber repeater station through the coupler to convert the radio-frequency signal into an optical signal, the near-end machine 1 of the first optical fiber repeater station transmits the optical signal to the far-end machine 5 of the third optical fiber repeater station to restore the radio-frequency signal, and the radio-frequency signal is transmitted to the tail locomotive station through the antenna, so that the reconnection communication continuity of the head locomotive and the tail locomotive at the half-section position of the front station is realized.
Similarly, when the locomotive enters the half-section area of the rear station, the antenna connected with the fourth optical fiber repeater far end 6 and the second radio frequency switch 9 receives the carrier f4 signal sent by the head locomotive platform, and the fourth optical fiber repeater far end 6 transmits the signal to the second optical fiber repeater near-end machine 2 through the optical fiber to be converted into a radio frequency signal and coupled to the station repeater platform. Meanwhile, the fourth optical fiber repeater remote terminal 6 generates a control signal to be remotely transmitted and connected to the first optical module 8 through the second optical module 10, controls the second optical fiber repeater remote terminal 4 and the first radio frequency switch 7 in the half-section area of the front station to access the antenna, and simultaneously cuts off the signal of the first optical fiber repeater remote terminal 3 in the front station. The station repeater station generates an f2 signal, the f2 signal is coupled to the near-end machine 2 of the second optical fiber repeater station through the coupler to convert the radio-frequency signal into an optical signal, the near-end machine 2 of the second optical fiber repeater station transmits the optical signal to the far-end machine 4 of the second optical fiber repeater station to restore the radio-frequency signal and transmits the radio-frequency signal to the tail locomotive station through the antenna, and the reconnection communication continuity of the head locomotive and the tail locomotive at the half-section position of the rear station is realized.
As shown in fig. 2, fig. 2 is a schematic structural diagram of a near-end machine of a fiber optic repeater of the present invention, which is composed of an optical transceiver module, a radio frequency module, a monitoring module, a passive device, a power supply, and the like.
The optical transceiver module is divided into an optical part and an optical receiving part, wherein the optical part realizes electro-optical conversion and modulates an RF signal on an optical signal; the light receiving part realizes photoelectric conversion, demodulates the original RF signal from the optical signal and carries out certain processing. The wavelength of the operating light of the module is 1.31 μm or 1.55 μm. The high-power radio frequency filter has the characteristics of wide working frequency band, low background noise, high light output power, high radio frequency linearity and the like. In addition, the module is provided with radio frequency gain control, so that the practical opening of engineering is facilitated.
The radio frequency module consists of a numerical control attenuator. By adjusting the attenuation of the attenuator, the appropriate downlink input level can be provided for the optical module, and the uplink signal sent to the station repeater can be adjusted, so that the uplink and downlink gain balance can be achieved. Meanwhile, uplink signals can be controlled, and interference on a station repeater is avoided.
The remote machine is composed of an uplink low noise amplifier, a downlink power amplifier and the like. The uplink and downlink gains are adjusted through the monitoring software, and the setting of the index is facilitated.
The uplink low noise amplifier amplifies a signal from the duplexer with low noise, and normally has a noise factor of about 1.2 dB. The amplified signal is transmitted to the optical transceiver module.
The downlink power amplifier amplifies the signal sent by the optical transceiver module and sends the amplified signal to the antenna through the duplexer, and the maximum output power of the antenna port depends on different types. The state information of large standing wave ratio alarm, over-power alarm and over-temperature alarm can be provided.
The passive device is composed of a transmitting-receiving duplexer and a filter. For separating the forward link signal from the reverse link signal and passing the two signals through a bandpass filter of a particular bandwidth. The passband frequency is: 467 to 469MHz (forward); 457 to 459MHz (reverse). The front reverse direction of the duplexer has the isolation of 140dBc, so that the noise level of a main signal can be effectively prevented from being raised by a useless signal, and out-of-band signals can be greatly attenuated.
The near-end machine power supply adopts a-48 VDC or 220VAC working mode. The remote machine can work by adopting a supply mode of 220VAC power supply or a solar energy or remote supply mode.
The monitoring module has a perfect monitoring function, the monitoring unit can be displayed locally, and the system can observe and detect the parameters for a long time and can set the parameters based on a computer terminal in a wired or wireless mode.
Specifically, the near-end unit of the optical fiber repeater comprises a first duplexer 11, wherein the transmitting end of the first duplexer 11 is connected with a first further attenuator 12, the first further attenuator 12 is connected with a first optical transmitter 13, and the first further attenuator 12 is used for providing a downlink signal input level according to transmission; the receiving end of the first duplexer 11 is connected to a second step attenuator 14, the second step attenuator 14 is connected to a first optical receiver 15, and the second step attenuator 14 is configured to adjust an uplink signal sent to the station relay station; the first optical transmitter 13 and the first optical receiver 15 are respectively connected to a first wavelength splitter 16; the first step attenuator 12, the second step attenuator 14, the first optical transmitter 13, the first optical receiver 15, and the first wavelength division device 16 are respectively connected to a first monitoring module 17, and the first monitoring module 17 is configured to monitor and set various parameters through a computer terminal.
As shown in fig. 3, fig. 3 is a schematic structural diagram of a remote end of a fiber optic repeater of the present invention, which is composed of an optical transceiver module, a radio frequency module, a monitoring module, a passive device, a power supply, and the like. The optical transceiver module is divided into an optical part and an optical receiving part, wherein the optical part realizes electro-optical conversion and modulates an RF signal on an optical signal; the light receiving part realizes photoelectric conversion, demodulates the original RF signal from the optical signal and carries out certain processing. The wavelength of the operating light of the module is 1.31 μm or 1.55 μm. The high-power radio frequency filter has the characteristics of wide working frequency band, low background noise, high light output power, high radio frequency linearity and the like. In addition, the module is provided with radio frequency gain control, so that the practical opening of engineering is facilitated. The radio frequency module comprises an uplink low noise amplifier, a downlink power amplifier and the like. The uplink and downlink gains are adjusted through the monitoring software, and the setting of the index is facilitated. The uplink low noise amplifier amplifies a signal from the duplexer with low noise, and normally has a noise factor of about 1.2 dB. The amplified signal is transmitted to the optical transceiver module. The downlink power amplifier amplifies the signal sent by the optical transceiver module and sends the amplified signal to the antenna through the duplexer, and the maximum output power of the antenna port depends on different types. The state information of large standing wave ratio alarm, over-power alarm and over-temperature alarm can be provided. The passive device is composed of a transmitting-receiving duplexer and a filter. For separating the forward link signal from the reverse link signal and passing the two signals through a bandpass filter of a particular bandwidth. The passband frequency is: 467 to 469MHz (forward); 457 to 459MHz (reverse). The front reverse direction of the duplexer has the isolation of 140dBc, so that the noise level of a main signal can be effectively prevented from being raised by a useless signal, and out-of-band signals can be greatly attenuated. The power supply adopts the supply mode of 220VAC power supply or adopts the mode of solar energy or remote supply to work. The monitoring module has a perfect monitoring function, the monitoring unit can be displayed locally, and the system can observe and detect the parameters for a long time and can set the parameters based on a computer terminal in a wired or wireless mode.
Specifically, the remote machine of the fiber optic repeater comprises a second duplexer 21, wherein the transmitting end of the second duplexer 21 is connected with a low-noise amplifier 22, and the low-noise amplifier 22 is connected with a second optical transmitter 23; the receiving end of the second duplexer 21 is connected to the rf switch 24, the rf switch 24 is connected to the power divider 25, and the power divider 25 is connected to the second optical receiver 26; the second optical transmitter 23 and the second optical receiver 26 are respectively connected to a second wavelength splitter 27; the low noise amplifier 22, the second optical transmitter 23, the second optical receiver 26, the power divider 25, and the radio frequency switch 24 are respectively connected to a second monitoring module 28, and the second monitoring module 28 is configured to monitor and set various parameters through a computer terminal.
The utility model also provides a method for realizing communication by using the head and tail locomotive reconnection communication equipment, which comprises the following steps:
step 1): the station repeater couples a part of the downlink radio frequency signal to a BS port of a near-end machine of the first optical fiber repeater through the directional coupler, and after filtering and amplifying processing, the level of the downlink radio frequency signal meets the level requirement of a transmitting end interface;
step 2): modulating a downlink radio frequency signal on an optical signal in a near-end machine of the first optical fiber repeater and transmitting the optical signal to a far-end machine of the first optical fiber repeater through an optical cable;
step 3): the first optical fiber repeater remote terminal converts the optical signal into a radio frequency signal, amplifies and filters the radio frequency signal, outputs the radio frequency signal from an MS port of the first optical fiber repeater, and transmits the radio frequency signal through an antenna.
Similarly, after being received by the antenna of the far-end machine, the uplink signal is modulated after being filtered and amplified, and then is sent to the near-end machine after being sent to the optical fiber, and the near-end machine converts the optical signal into a radio frequency signal and sends the radio frequency signal back to the station forwarding platform through the coupler.
It should be noted that the above-mentioned embodiments and embodiments are intended to demonstrate the practical application of the technical solution provided by the present invention, and should not be construed as limiting the scope of the present invention. Various modifications, equivalent substitutions, or improvements may be made by those skilled in the art within the spirit and principles of the utility model. The scope of the utility model is to be determined by the appended claims.
Claims (5)
1. A head-tail locomotive reconnection communication device is characterized by comprising two near-end machines of optical fiber repeaters and four far-end machines of optical fiber repeaters; wherein,
the near-end machine (1) of the first optical fiber repeater is arranged at the previous station, the near-end machine (2) of the second optical fiber repeater is arranged at the next station, the far-end machine (3) of the first optical fiber repeater and the far-end machine (4) of the second optical fiber repeater are arranged between the two stations in the first half interval, and the far-end machine (5) of the third optical fiber repeater and the far-end machine (6) of the fourth optical fiber repeater are arranged between the two stations in the second half interval;
the first optical fiber repeater near-end machine (1) and the second optical fiber repeater near-end machine (2) are connected with a station forwarding platform of the station through directional couplers;
the first optical fiber repeater remote end machine (3) and the third optical fiber repeater remote end machine (5) are accessed to the first optical fiber repeater near-end machine (1); the second optical fiber repeater remote end machine (4) and the fourth optical fiber repeater remote end machine (6) are accessed to the second optical fiber repeater near-end machine (2);
the first optical fiber repeater remote terminal (3) and the second optical fiber repeater remote terminal (4) are switched to an antenna through a first radio frequency switch (7); the third optical fiber repeater remote end machine (5) and the fourth optical fiber repeater remote end machine (6) are switched to an antenna through a second radio frequency switch (9);
the first optical fiber repeater remote terminal (3) and the first radio frequency switch (7) are connected with the first optical module (8); a fourth optical fiber repeater remote terminal (6) and a second radio frequency switch (9) are connected with a second optical module (10); the first optical module (8) is connected with the second optical module (10) so as to realize a mutual control mode of front connection and back connection disconnection by remotely controlling the optical fiber repeater remote end machine in the front half interval and the back half interval through the optical modules.
2. The end-to-end locomotive reconnection communication device according to claim 1, wherein said optical fiber repeater near-end machine comprises a first duplexer (11), the transmitting end of the first duplexer (11) is connected with a first further attenuator (12), the first further attenuator (12) is connected with a first optical transmitter (13), the first further attenuator (12) is used for providing a downstream signal input level according to the transmission; the receiving end of the first duplexer (11) is connected with a second step attenuator (14), the second step attenuator (14) is connected with a first optical receiver (15), and the second step attenuator (14) is used for adjusting an uplink signal sent to the station repeater; the first optical transmitter (13) and the first optical receiver (15) are respectively connected with the first wave splitter (16); the first step attenuator (12), the second step attenuator (14), the first optical transmitter (13), the first optical receiver (15) and the first wavelength divider (16) are respectively connected with a first monitoring module (17), and the first monitoring module (17) is used for monitoring and setting all parameters through a computer terminal.
3. The lead-tail locomotive double-heading communication device according to claim 1, wherein the remote unit of the fiber optic repeater comprises a second duplexer (21), a transmitting end of the second duplexer (21) is connected with a low noise amplifier (22), and the low noise amplifier (22) is connected with a second optical transmitter (23); the receiving end of the second duplexer (21) is connected with a radio frequency switch (24), the radio frequency switch (24) is connected with a power divider (25), and the power divider (25) is connected with a second optical receiver (26); the second optical transmitter (23) and the second optical receiver (26) are respectively connected with the second wave splitter (27); the low-noise amplifier (22), the second optical transmitter (23), the second optical receiver (26), the power divider (25) and the radio frequency switcher (24) are respectively connected with a second monitoring module (28), and the second monitoring module (28) is used for monitoring and setting various parameters through a computer terminal.
4. The head-to-tail locomotive reconnection communication device according to claim 1, wherein the first fiber optic repeater remote terminal (3) and the third fiber optic repeater remote terminal (5) are accessed to the first fiber optic repeater near-end terminal (1) through a wavelength division multiplexer; and the second optical fiber repeater remote terminal (4) and the fourth optical fiber repeater remote terminal (6) are accessed to the second optical fiber repeater near-end machine (2) through a wavelength division multiplexer.
5. The locomotive double heading communication device of claim 1, wherein the fiber optic repeater near-end machine operates with-48 VDC or 220VAC power, and the fiber optic repeater far-end machine operates with 220VAC power or solar or remote power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122608551.4U CN216057018U (en) | 2021-10-28 | 2021-10-28 | Head-tail locomotive reconnection communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122608551.4U CN216057018U (en) | 2021-10-28 | 2021-10-28 | Head-tail locomotive reconnection communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216057018U true CN216057018U (en) | 2022-03-15 |
Family
ID=80611965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122608551.4U Active CN216057018U (en) | 2021-10-28 | 2021-10-28 | Head-tail locomotive reconnection communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216057018U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113922877A (en) * | 2021-10-28 | 2022-01-11 | 泉州市铁通电子设备有限公司 | Head-tail locomotive reconnection communication equipment and implementation method |
-
2021
- 2021-10-28 CN CN202122608551.4U patent/CN216057018U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113922877A (en) * | 2021-10-28 | 2022-01-11 | 泉州市铁通电子设备有限公司 | Head-tail locomotive reconnection communication equipment and implementation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211830769U (en) | 5G frequency conversion light distribution system | |
| CN108847891B (en) | Radio over fiber distributed small base station system | |
| CN102263595B (en) | Many nets merge Fiber Access System | |
| CN106656339B (en) | GSM-R repeater Ethernet double-fiber optical transceiver with optical loss automatic gain compensation | |
| CN216057018U (en) | Head-tail locomotive reconnection communication equipment | |
| CN210327552U (en) | Dual-mode wireless communication device and railway vehicle-mounted equipment formed by same | |
| CN215581725U (en) | 5G electricity connection indoor coverage system | |
| CN105406917B (en) | A kind of full warm back-up digital processing and light distribution system | |
| CN201022197Y (en) | Optical fiber repeater with same and different frequency forwarding function | |
| CN111416651A (en) | Frequency shift relay device for wireless shunting locomotive signal and monitoring system | |
| CN201294527Y (en) | Common fibre-optical directly-discharging station for time division duplexing and frequency-division duplexing | |
| CN113922877A (en) | Head-tail locomotive reconnection communication equipment and implementation method | |
| CN215871424U (en) | Optical fiber radio frequency signal zooming device | |
| CN215300635U (en) | 5G base station coupling zoom-out system | |
| CN201274479Y (en) | Optical fiber repeater for TD-SCDMA mobile communication | |
| CN110474655B (en) | Dual-mode wireless communication device and railway vehicle-mounted equipment comprising same | |
| CN201369606Y (en) | Power supply switching device for optical fiber repeater far-end machine | |
| CN201426185Y (en) | Single-fiber transmission 1-to-N fiber-optic repeater system | |
| CN201450507U (en) | One-dragged multi-fiber optic repeater with combined radio frequency combining branch and optical branch | |
| CN201039141Y (en) | A RF integration channel one-drive-multiple optical fiber repeater | |
| CN210016465U (en) | Optical fiber relay remote equipment | |
| CN113225132A (en) | 5G base station coupling zoom-out system | |
| CN210137325U (en) | GSM-R optical fiber repeater system | |
| CN211860101U (en) | Frequency shift relay device for wireless shunting locomotive signal and monitoring system | |
| CN206620136U (en) | GSM R repeaters Ethernet double-fiber optical transmitter and receiver with light loss automatic gain compensation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |