CN206313773U - The GPS optical fiber repeater far-end machines of railway applications - Google Patents
The GPS optical fiber repeater far-end machines of railway applications Download PDFInfo
- Publication number
- CN206313773U CN206313773U CN201621484780.2U CN201621484780U CN206313773U CN 206313773 U CN206313773 U CN 206313773U CN 201621484780 U CN201621484780 U CN 201621484780U CN 206313773 U CN206313773 U CN 206313773U
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- China
- Prior art keywords
- optical fiber
- module
- gps
- power
- railway applications
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Abstract
The utility model provides a kind of GPS optical fiber repeater far-end machines of railway applications, including radio-frequency module, power module and control module, described radio-frequency module includes the optical module, auto level control/attenuator circuit and the power amplification circuit that are sequentially connected, wherein power amplification circuit and retransmitting antenna are connected, and optical module is connected by optical fiber and near-end machine.The utility model solves gps signal covering in indoor and tunnel using wireless transmission mode after gps signal wireless receiving.
Description
Technical field
The utility model is related to GPS communication system field, the GPS optical fiber repeaters distal end of specifically a kind of railway applications
Machine.
Background technology
Current Chinese Railway is constantly in the high speed development stage, and train quantity constantly increases, so newly-built multiple motor-cars
Marshalling yard.Motor-car goes out storage and checks and carry out indoors when part is organized into groups that but interior cannot receive gps signal, to motor-car and
Compartment positioning cannot be carried out effectively.Additionally, train also can cannot receive GPS location signal for a long time in major long tunnel, therefore nothing
Method carries out GPS tracking and positioning, the hidden danger to train safety belt.To meet the gps signal covering in indoor and tunnel, Yi Zhongshi
Answer the GPS optical fiber repeater far-end machines of railway applications essential.
Utility model content
The utility model is in order to solve problem of the prior art, there is provided a kind of GPS optical fiber repeaters of railway applications are remote
Terminal, using wireless transmission mode after gps signal wireless receiving, solves gps signal covering in indoor and tunnel.
The utility model includes radio-frequency module, power module and control module, and described radio-frequency module includes being sequentially connected
Optical module, auto level control/attenuator circuit and power amplification circuit, wherein power amplification circuit and retransmitting antenna connect,
Optical module is connected by optical fiber and near-end machine.
Further improve, described near-end machine power module passes through input interface for gps antenna provides DC5V~12V/
200mA feeds.
The utility model beneficial effect is：
1.GPS optical fiber repeater far-end machines support gps signal covering in indoor and tunnel,
2.GPS optical fiber repeater far-end machines use light distribution formula networking mode；
It is IP55 requirements that 3.GPS optical fiber repeater far-end machines meet degree of protection, supports outdoor mounted.
Brief description of the drawings
Fig. 1 is the utility model electrical block diagram.
Fig. 2 is the utility model applied topology block diagram.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
The utility model circuit structure is as shown in figure 1, including radio-frequency module, power module and control module, described penetrates
Frequency module includes the optical module, auto level control/attenuator circuit and the power amplification circuit that are sequentially connected, wherein power amplification electricity
Road and retransmitting antenna are connected, and optical module is connected by optical fiber and near-end machine.
TWZ-GPS radio repeater systems are including GPS repeaters, GPS Active Receiving Antennas, retransmitting antenna etc..Mainly should
Be the gps signal that will receive of GPS Active Receiving Antennas by after receiving circuit, filter circuit with principle, then be amplified by
Gps signal is covered feeble field by retransmitting antenna, and its canonical system applied topology block diagram is as shown in Figure 2.
Functional requirement：
（1）Incoming gps signal is supported, and its signal can effectively be amplified；
（2）Possess perfect protection, alarm function；Locally there is alarm indicator；With local debugging interface and remotely
Monitoring（Network management monitoring）；
（3）With measures such as antisurge, 4 grades of lightning protection, possess overvoltage, excessively stream and short-circuit protection function；
（4）Support the star-like networking mode of optical fiber.
Install and structural requirement：
（1）Equipment interface cabling uses downward cabling mode, so that wall built-up is installed；
（2）Adverse circumstances and unattended condition of work in this functional adaptation tunnel, cabinet use hermetically sealed shell, prevent
Shield grade supports IP55, and volume and weight is tried one's best small and light；
（3）Meet electromagnetic compatibility shielding requirement, power connection uses waterproof Aviation Connector, band shield gasket function；
（4）Chassis design rationally, is easily installed, and is adapted to the mounting means such as wall built-up, rack；
（5）With various optical interfaces, such as FC/PC, FC/APC etc..
The key technical indexes：
（1）Frequency range（Frequency Range）：1575.42 MHz±2 MHz；
（2）Input impedance（Impedance）： 50 Ohm；
（3）Maximum gain（LNA Gain）： 50±3dB；
（4）Gain-adjusted（Gain adjust）0~30dB；
（5）Peak power output（Output Power）： 40dBm±2dBm、30dBm±2dBm、20dBm±2dBm、
10dBm ± 2dBm, 0dBm ± 2dBm etc., are not limited to above-mentioned peak power output value；
（6）ALC control ranges：≥15dBm；
（7）Propagation delay time（Time Delay）：≤ 500ns；
（8）Noise coefficient（Noise Figure）：≤ 4dB；
（9）Inband flatness：≤1.5dB（p-p）；
（10）Input and output standing wave（VSWR）：≤ 1.4；
（11）Equipment interface form：N-K；
（12）Antenna is powered output（Feed Power）:DC5~12V/200mA；
（13）Power consumption（Power Assurance）：≤30W.
Power requirement：
1）Power supply：Exchange AC220V, fluctuation range：AC154~286V；50Hz±5Hz；
Or direct current DC48V, fluctuation range：DC-40~-57V；
2）Power connection uses aviation plug；
3）With input overvoltage protection, output over-voltage protection, output overcurrent protection；
Working environment：- 25 DEG C~+55 DEG C；
Reliability index：MTBF≥50000h.
EMC Requirements should meet the relevant regulations of GB/T 24338.5.
Cabinet has earth stud.
Dielectric strength：Power interface：Insulate pressure-resistant >=1500V, communication, detection interface：Insulate pressure-resistant >=1000V.
Electromagnetism interference：Power interface：There are antisurge, anti-peak voltage, anti thunder strike circuit to protect, communication, detection interface：
There are antisurge, anti-peak voltage, anti thunder strike circuit to protect.
Safeguard protection：Power interface：Input overvoltage protection, output over-voltage protection, output overcurrent protection；Communication, detection connect
Mouthful：There is insulation blocking.
In order to the cable interface for preventing equipment is damaged, it is desirable to there is cable joint protector.
The utility model concrete application approach is a lot, and the above is only preferred embodiment of the present utility model, should
Point out, for those skilled in the art, on the premise of the utility model principle is not departed from, can also make
Go out some improvement, these improvement also should be regarded as protection domain of the present utility model.
Claims (2)
1. GPS optical fiber repeater far-end machines of a kind of railway applications, it is characterised in that：Including radio-frequency module, power module and control
Molding block, described radio-frequency module includes the optical module, auto level control/attenuator circuit and the power amplification electricity that are sequentially connected
Road, wherein power amplification circuit and retransmitting antenna are connected, and optical module is connected by optical fiber and near-end machine.
2. GPS optical fiber repeater far-end machines of railway applications according to claim 1, it is characterised in that：Described near-end
Electromechanical source module is fed by input interface for gps antenna provides DC5V~12V/200mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621484780.2U CN206313773U (en) | 2016-12-31 | 2016-12-31 | The GPS optical fiber repeater far-end machines of railway applications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621484780.2U CN206313773U (en) | 2016-12-31 | 2016-12-31 | The GPS optical fiber repeater far-end machines of railway applications |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206313773U true CN206313773U (en) | 2017-07-07 |
Family
ID=59248088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621484780.2U Expired - Fee Related CN206313773U (en) | 2016-12-31 | 2016-12-31 | The GPS optical fiber repeater far-end machines of railway applications |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206313773U (en) |
-
2016
- 2016-12-31 CN CN201621484780.2U patent/CN206313773U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 Termination date: 20211231 |