CN205336271U - Interval communication system of railway based on contact net - Google Patents
Interval communication system of railway based on contact net Download PDFInfo
- Publication number
- CN205336271U CN205336271U CN201521083737.0U CN201521083737U CN205336271U CN 205336271 U CN205336271 U CN 205336271U CN 201521083737 U CN201521083737 U CN 201521083737U CN 205336271 U CN205336271 U CN 205336271U
- Authority
- CN
- China
- Prior art keywords
- contact net
- communication system
- base station
- system based
- receiving terminal
- 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
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The utility model relates to an interval communication system of railway based on contact net, including passing through transmitting terminal and the receiving terminal that the contact net is connected each other, transmitting terminal and receiving terminal all including the induction antenna, the communication base station that connect gradually and cover the antenna. Compared with the prior art, the utility model discloses an interference killing feature of technological add -on system such as spread spectrum modulation has combined pronunciation encoding transmission function simultaneously, can solve the interval long -distance communication problem of railway.
Description
Technical field
This utility model relates to a kind of railway section communication system, especially relates to a kind of railway section communication system based on contact net。
Background technology
In recent years, power line wide-band network accesses the feature complete, widely distributed, with low cost with its infrastructure, just increasingly receives publicity, particularly in remote countryside or underpopulated area, has extremely strong practical value。Contact net carrier communication utilizes the power line carrier technology of existing electrification railway contact net and relative maturity, how many infrastructure investments need not be increased and achieve that data communication two-way between train and ground, train and train, and frequency spectrum resource is loose, interfered by outside relatively fewer。
At present, interval radio communication relies primarily on GSM-R with vehicle-mounted GSM-R handheld terminal, the technology such as high power station, transposer station, but in the Various Complex situation such as mountain area, tunnel, its signal possibly cannot transmitting, and it is of a relatively high to cover cost。
Utility model content
Defect that the purpose of this utility model is contemplated to overcome above-mentioned prior art to exist and a kind of railway section communication system based on contact net is provided, combining wireless talkback technology with contact net communication for technical foundation, the difficult problem for railway section long haul communication provides reliably easy solution。
The purpose of this utility model can be achieved through the following technical solutions:
A kind of railway section communication system based on contact net, it is characterised in that include the transmitting terminal and the receiving terminal that are connected each other by contact net, described transmitting terminal and receiving terminal all include the induction antenna, communication base station and the covering antenna that are sequentially connected with。
Described base station includes the sensing modem, control and converting unit, channel device and the wave filter that are sequentially connected with。
Described base station also includes the power supply being connected respectively with sensing modem, control and converting unit, channel device。
Described power supply is the power supply possessing charge and discharge control。
Described power supply is as the UPS external accumulator used。
The base station of described receiving terminal is connected with the induction antenna of transmitting terminal by contact net。
Compared with prior art, this utility model increases the capacity of resisting disturbance of system by technology such as band spectrum modulation, in combination with voice coding transfer function, it is possible to solve railway section long haul communication problem。
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model transmitting terminal and receiving terminal；
Fig. 2 is the voice application schematic diagram of this utility model embodiment。
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is a part of embodiment of the present utility model, rather than whole embodiment。Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under the premise not making creative work, all should belong to the scope of this utility model protection。
As it is shown in figure 1, a kind of railway section communication system based on contact net, including the transmitting terminal connected by contact net each other and receiving terminal, described transmitting terminal and receiving terminal all include the induction antenna 7, communication base station 1 and the covering antenna 6 that are sequentially connected with；
Described transmitting terminal is sent on contact net by induction antenna 7 after the primary signal of collection is compressed modulation by base station 1, and described receiving terminal receives signal and by reverting to primary signal after the despreading modulation of base station。
Described base station 1 includes the sensing modem 3, control and converting unit 2, channel device 4 and the wave filter 5 that are sequentially connected with。Described base station 1 also includes the power supply 8 being connected respectively with sensing modem 3, control and converting unit 2, channel device 4。Described power supply is the power supply possessing charge and discharge control。Described power supply is as the UPS external accumulator used。
The base station of described receiving terminal is connected with the induction antenna of transmitting terminal by contact net。Described senses the good m-sequence of modem employing autocorrelation as frequency expansion sequence。Described channel device is analog channel machine；Or support DMR standard and TDMA12.5KHz narrow band channel interval, with the digital channel machine of AMBE+2 coding。
For the scene shown in Fig. 2:
1) information that when subscriber a calls subscriberb, the hand-held intercommunication terminal of user A is launched is received by neighbouring channel device and voice messaging passes to control and converting unit。
2) control and voice data is compressed by converting unit, and pass data to sensing modem。
3) voice data is modulated by the spread spectrum code sequence that sensing modem is produced by spectrum-spreading code generator, and then to extend the frequency spectrum of signal, re-modulation, to carrier frequency, is sent on contact net by induction antenna。
4) at the receiving terminal residing for party B-subscriber, the broadband rf signal received is converted to intermediate frequency by sensing modem, is then de-spread by spread spectrum code sequence decorrelation that is locally generated and that make a start identical, then through demodulation, reverts to original audio information。
5), after control and converting unit receive voice messaging, user B can be sent information to by channel device and covering antenna, it is achieved remote speech communication。
The above; it is only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; can readily occurring in amendment or the replacement of various equivalence, these amendments or replacement all should be encompassed within protection domain of the present utility model。Therefore, protection domain of the present utility model should be as the criterion with scope of the claims。
Claims (6)
1. the railway section communication system based on contact net, it is characterised in that include the transmitting terminal and the receiving terminal that are connected each other by contact net, described transmitting terminal and receiving terminal all include the induction antenna, communication base station and the covering antenna that are sequentially connected with。
2. a kind of railway section communication system based on contact net according to claim 1, it is characterised in that described base station includes the sensing modem, control and converting unit, channel device and the wave filter that are sequentially connected with。
3. a kind of railway section communication system based on contact net according to claim 2, it is characterised in that described base station also includes the power supply being connected respectively with sensing modem, control and converting unit, channel device。
4. a kind of railway section communication system based on contact net according to claim 3, it is characterised in that described power supply is the power supply possessing charge and discharge control。
5. a kind of railway section communication system based on contact net according to claim 3 or 4, it is characterised in that described power supply is as the UPS external accumulator used。
6. a kind of railway section communication system based on contact net according to claim 2, it is characterised in that the base station of described receiving terminal is connected with the induction antenna of transmitting terminal by contact net。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521083737.0U CN205336271U (en) | 2015-12-22 | 2015-12-22 | Interval communication system of railway based on contact net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521083737.0U CN205336271U (en) | 2015-12-22 | 2015-12-22 | Interval communication system of railway based on contact net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205336271U true CN205336271U (en) | 2016-06-22 |
Family
ID=56207564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521083737.0U Active CN205336271U (en) | 2015-12-22 | 2015-12-22 | Interval communication system of railway based on contact net |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205336271U (en) |
-
2015
- 2015-12-22 CN CN201521083737.0U patent/CN205336271U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Das | Mobile handset design | |
| CN102098080A (en) | Digital microwave radio remote unit coverage system and method | |
| CN106162945A (en) | Honeycomb base station device and data transmission method, communication equipment and communication system | |
| CN103152121B (en) | Mobile phone signal intelligent shielding signal generator and system | |
| CN101998423A (en) | Novel wireless mobile communication combining coverage system and method | |
| CN207559995U (en) | Digital radio Heibei provincial opera simulcasting system | |
| CN102307064A (en) | Frequency-shift-based multi-system analogue fiber broadband access system and transmission method thereof | |
| CN205336271U (en) | Interval communication system of railway based on contact net | |
| CN101459917B (en) | Duplex millimeter wave optical fiber radio system and modulation process thereof | |
| CN102217208A (en) | A method for transmitting signals, a combiner and a system thereof | |
| CN105429671A (en) | Railway section communication system based on overhead contact line and application thereof | |
| CN101651498B (en) | Repeater and method for removing pilot frequency pollution by same | |
| CN101437272B (en) | Method, apparatus, system for transmitting HPB and method for guiding terminal switch | |
| CN207410341U (en) | A kind of high-speed railway network system based on special TD-LTE | |
| CN201467473U (en) | M frequency band 1 to N optical fiber repeater system | |
| CN104754312A (en) | Integrated communication system | |
| CN101136705A (en) | Full optical subcarrier demodulator and method of millimeter wave optical fiber radio uplink | |
| CN202978974U (en) | Signal shielding system applicable to GSM signal | |
| CN104113461A (en) | Long-distance voice communication system and method used for seismic prospecting | |
| CN201957244U (en) | GSM digital enclave companding system | |
| CN201594574U (en) | Multiplexer multi-system module | |
| CN210609198U (en) | TD-LTE digital interference unit | |
| CN201937828U (en) | GSM digital enclave system | |
| CN111030777A (en) | CDMA communication method based on harmonic modulation technology | |
| CN201601830U (en) | CDMA digital enclave companding system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |