CN109586765A - A kind of electric railway communication equipment and system based on millimeter wave - Google Patents
A kind of electric railway communication equipment and system based on millimeter wave Download PDFInfo
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- CN109586765A CN109586765A CN201910074000.9A CN201910074000A CN109586765A CN 109586765 A CN109586765 A CN 109586765A CN 201910074000 A CN201910074000 A CN 201910074000A CN 109586765 A CN109586765 A CN 109586765A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 241001585714 Nola Species 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 230000009466 transformation Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000005674 electromagnetic induction Effects 0.000 description 3
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- 238000009434 installation Methods 0.000 description 3
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/56—Circuits for coupling, blocking, or by-passing of signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5429—Applications for powerline communications
- H04B2203/5441—Wireless systems or telephone
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5483—Systems for power line communications using coupling circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5491—Systems for power line communications using filtering and bypassing
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Abstract
The present invention relates to a kind of electric railway communication equipment and system based on millimeter wave, the equipment includes electricity-fetching module, power supply module, power line communication module and the first mm wave RF transceiver module and the second mm wave RF transceiver module；The electricity-fetching module is used for the current transmission that takes electricity from power network, and will acquire to power supply module；The power supply module to power line communication module, the first millimeter wave transceiving module and the second millimeter wave transceiving module for powering after being rectified the electric current that electricity-fetching module conveys；First millimeter wave transceiving module and the second millimeter wave transceiving module are for sending and receiving millimeter wave；The power line communication module is used to carry out signal conversion to millimeter wave.The millimetre-wave attenuator between electric railway communication equipment is established by the first mm wave RF transceiver module and second millimeter of RF receiving and transmission module, extremely wide bandwidth is had based on millimeter wave, wave beam is narrow, has very strong penetrability, small by Doppler effect.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of electric railway communication equipment based on millimeter wave and it is
System.
Background technique
Electric railway, abbreviation electrified railway, refer to can for the railway of electric power train running, because along this kind of railway all
Need mating corresponding electrified module for train provides electric power safeguard and gains the name.And the main dynamic vehicle of existing electric trains
(motor-car) and high-speed railway (high-speed rail), and the speed of motor-car and high-speed rail can achieve 200KM or more, and since Doppler is imitated
It answers, in motor-car and high-speed rail during running at high speed, forms shielded layer on the surface of motor-car and high-speed rail, and shielded layer can be to existing
The signal of communication of communication module in some electric railways generates shielding, cause in the motor-car run at high speed and high-speed rail and near
Communication interference, influence normal communication.
Summary of the invention
For this reason, it may be necessary to provide a kind of electric railway communication equipment and system based on millimeter wave, solve existing motor-car and
During high-speed rail is run at high speed, the problem of influence due to Doppler effect on communication.
To achieve the above object, a kind of electric railway communication equipment based on millimeter wave is inventor provided, including is taken
Electric module, power supply module, power line communication module, wireless communication module and the first mm wave RF transceiver module and second millimeter
Wave RF receiving and transmission module；
The electricity-fetching module is used for the current transmission that takes electricity from power network, and will acquire to power supply module；
After the power supply module is used to be rectified in the electric current that electricity-fetching module conveys, to power line communication module, wirelessly
Communication module, the first millimeter wave transceiving module and the power supply of the second millimeter wave transceiving module；
First millimeter wave transceiving module and the second millimeter wave transceiving module are for sending and receiving millimeter wave；
The wireless communication module is connected to power line communication module, and the wireless communication module is used for outside to high-voltage line
Equipment carry out signal conversion；
The power line communication module is used to carry out signal conversion to millimeter wave.
It advanced optimizes, the first mm wave RF transceiver module and the second mm wave RF transceiver module are received or sent out
The frequency of the millimeter wave sent is 30GHz-140GHz.
It advanced optimizes, further includes WiFi module, the WIFI module is connected to power line communication module, the power line
Communication module is for being converted into network signal for millimeter-wave signal or converting millimeter-wave signal, the WIFI for network signal
Module is for sending WIFI signal.
It advanced optimizes, the wireless communication module is that NoLa communication module, NB-LoT communication module and Zibee communicate mould
One of block is a variety of.
It advanced optimizes, the first mm wave RF transceiver module and the second mm wave RF transceiver module are equipped with milli
Metric wave aerial, for receiving or emitting millimeter wave, the millimeter wave antenna is erected on power network the millimeter wave antenna, described
Gap is equipped between millimeter wave antenna and power network.
Inventor additionally provides another technical solution: a kind of electric railway communication system based on millimeter wave, including
Electric railway communication equipment described above based on millimeter wave, the electric railway communication equipment based on millimeter wave is more
It is a, it is connected between the electric railway communication equipment based on millimeter wave by millimetre-wave attenuator.
It is different from the prior art, above-mentioned technical proposal, by setting up multiple be based at the power network interval of electric railway
The electric railway communication equipment of millimeter wave, electric railway communication equipment obtain work electricity by electricity-fetching module from power network
It behind source, works by other modules of power supply module treatment and supplied, passes through the first mm wave RF transceiver module and the second milli
Rice RF receiving and transmission module establishes the millimetre-wave attenuator between electric railway communication equipment, has extremely wide band based on millimeter wave
Width, is influenced small by natural light and heat radiation, and wave beam is narrow, has very strong penetrability, small by Doppler effect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the electric railway communication equipment based on millimeter wave described in specific embodiment；
Fig. 2 is a kind of structural schematic diagram of mm wave RF transceiver module described in specific embodiment；
Fig. 3 is a kind of schematic illustration of electricity-fetching module described in specific embodiment；
Fig. 4 is another schematic illustration of electricity-fetching module described in specific embodiment；
Fig. 5 is a kind of circuit diagram of CT power-supply circuit described in specific embodiment；
Fig. 6 is another circuit diagram of CT power-supply circuit described in specific embodiment；
Fig. 7 is a kind of structural schematic diagram of the electric railway communication system based on millimeter wave described in specific embodiment.
Description of symbols:
110, electricity-fetching module,
120, power supply module,
130, power line communication module,
140, the first mm wave RF transceiver module,
150, the second mm wave RF transceiver module,
210, electric railway communication equipment.
Specific embodiment
Technology contents, construction feature, the objects and the effects for detailed description technical solution, below in conjunction with specific reality
It applies example and attached drawing is cooperated to be explained in detail.
Referring to Fig. 1, the electric railway communication equipment described in the present embodiment based on millimeter wave, including electricity-fetching module 110,
Power supply module 120, power line communication module 130, wireless communication module and the first mm wave RF transceiver module 140 and the second milli
Metric wave RF receiving and transmission module 150；Wherein, the first mm wave RF transceiver module 140 and the second mm wave RF transceiver module 150
It is all made of mm wave RF transceiver module as shown in Figure 2.
The electricity-fetching module 110 is used for the current transmission that takes electricity from power network, and will acquire to power supply module 120；
The power supply module 120 is for giving power line communication module after being rectified the electric current that electricity-fetching module 110 conveys
130, the first millimeter wave transceiving module and the power supply of the second millimeter wave transceiving module；
First millimeter wave transceiving module and the second millimeter wave transceiving module are for sending and receiving millimeter wave；Wherein,
The millimeter wave that the first mm wave RF transceiver module 140 and the second mm wave RF transceiver module 150 receive or send
Frequency is 30GHz-140GHz.
The wireless communication module is connected to power line communication module 130, and the wireless communication module is used for high-voltage line
External equipment carries out signal conversion；
The power line communication module 130 is used to carry out signal conversion to millimeter wave.
Multiple electric railway communication equipments based on millimeter wave are set up by the power network interval in electric railway, electricity
The railway communication equipment that gasifies after obtaining working power in the high voltage bus on power network, is passing through confession by electricity-fetching module 110
The work of other modules of electric 120 treatment and supplied of module is received by the first mm wave RF transceiver module 140 and second millimeter of radio frequency
Hair module establishes the millimetre-wave attenuator between electric railway communication equipment, has extremely wide bandwidth based on millimeter wave, by nature
Light and heat radiation effect is small, and wave beam is narrow, has very strong penetrability, small by Doppler effect；By the way that wireless communication module is arranged
It is connected to power line communication module 130, after module receives the signal that the equipment outside high-voltage line is sent by wireless communication, docking
After the signal of receipts is converted, carried out data transmission by millimeter wave, it is possible to reduce transmission of the Doppler effect to detection signal
Influence, wherein high-voltage line external equipment can be the various sensors of electric railway, and sensor is for acquiring electrified iron
The various data on road are then sent to after wireless telecom equipment carries out signal conversion and are communicated by millimeter wave.
Please refer to Fig. 3-6, wherein electricity-fetching module and power supply module use CT power-supply circuit, are by CT (taking energy mutual inductor)
It is formed with power conversion module (converting required DC voltage for the CT electric flux obtained) two parts.CT power-supply circuit,
For obtaining the current signal converted through CT, and it is converted into stable 3.3V (or 5V, 12V etc.) DC voltage, electricity
Source conversion module includes current rectifying and wave filtering circuit, DC/DC modular circuit, overvoltage crowbar, power-fail detection circuit and backup battery
Circuit, wherein the electric current of high-tension line respectively enters signal conversion circuit, CT after over-current sensor, anti-surge protection circuit
Power-supply circuit and current rectifying and wave filtering circuit, current rectifying and wave filtering circuit output end connection DC/DC modular circuit, overvoltage crowbar and
The output end of power-fail detection circuit, DC/DC modular circuit exports 3.3V (or 5V, 12V etc.) DC voltage, power-fail detection circuit
Whether output end controls back-up battery circuit to whole system output voltage.In high pressure, super-pressure and UHV transmission field, lead
Line may flow through huge short trouble electric current, and at this moment current-inducing power supply need to install special matched current limiter additional.
CT takes power supply, i.e. it is by being mounted on power circuit that current-inducing power supply, current transformer, which takes power supply,
A kind of device that CT (Current Transformer takes energy mutual inductor) obtains power supply by electromagnetic induction principle, is from conducting wire
The magnetic field induction that load current generates takes electricity, and the isolated variable of power supply relies primarily on electromagnetic induction principle progress, can both carry out
Voltage transformation can also carry out current transformation；Current all kinds of power conversions based on voltage transformation, from high-voltage power, transmission of electricity to
Low-voltage transformation inside electric appliance, basic structure will originate from voltage transformation mode (such as PT voltage transformer).Electric current sense
The power supply for answering power supply and people common is different, and theoretical basis is derived from the current transformation of electromagnetic induction principle, energy conversion
On condition that primary side (often transmission pressure) is transmitted with enough alternating currents, and no matter how current in wire fluctuates,
Power supply output must all keep stable.Take electricity that can regard one as from electric current in the current transformer that power industry generally uses
Source takes a typical case of electricity.
In the present embodiment, WIFI signal in motor-car or high-speed rail is provided for convenience, further includes WiFi module, the WIFI
Module is connected to power line communication module 130, and the power line communication module 130 is used to for millimeter-wave signal to be converted into network letter
Number or convert millimeter-wave signal for network signal, the WIFI module is for sending WIFI signal.When power line communication mould
Block 130 receives millimeter wave letter by the first mm wave RF transceiver module 140 or the second mm wave RF transceiver module 150
Number, network connection is established, offer WIFI signal is then carried out by WIFI module, allows to receive in motor-car or high-speed rail
To WIFI signal.
In the present embodiment, the wireless communication module is that NoLa communication module, NB-LoT communication module and Zibee communicate mould
One of block is a variety of.
Wherein, Zibee communication module can using by Xiamen Zhuo Wan Science and Technology Ltd. develop based on Zigbee2007/
The ZAuZx_T series Zigbee serial ports transparent transmission mould of the 2.4G Zigbee wireless serial transparent transmission communication module of PRO protocol stack
Block, the module are based on the low consumed 2.4G rf chip CC2530 of TI high-performance and high-power low noise radio-frequency front-end core
Piece CC2591, realization easily use, all-transparent, high stable, super low-power consumption, overlength distance, ultra-large Zigbee wireless sensing
The networking of network, and the module is final mature by repeatedly improving, and it is mature medical that user is directly provided with cheap price
Zigbee network interface will be difficult in the past the simple operations that the protocol stack development process simplification driven is serial ports and I/O port, in detail
Rigorous technical parameter guarantees that user controls network performance completely, such as uses master of the CC2530+CC2591 with power amplifier chip
The ZAuZH_TCO*- of machine (Coordinator) module, the equipment routing such as using CC2530+CC2591 with power amplifier chip
(Router) ZAuZH_TRO*- of module, such as use terminal device of the CC2530+CC2591 with power amplifier chip
(EndDevice) ZAuZH_TEN- of module, such as use ZAuZL_ of the CC2530 with low-power consumption host (Coordinator) module
TCO-, the ZAuZL_TRO- such as using CC2530 with low power consuming devices routing (Router) module, such as use CC2530 with low function
Consume the ZAuZL_TEN*- of terminal device (EndDevice) module.
NoLa communication module can use SX1276/77/78 transceiver, and SX1276/77/78 transceiver uses LoRaTMFar
Journey modem, is used for extra long distance spread spectrum communication, and strong interference immunity can reduce electric current trumpet, by liter to greatest extent
Special LoRaTMPatent modulation technique, SX1276/77/78 transceiver using low cost crystal and it is boring can be obtained be more than-
The high sensitivity of 148dBm, in addition, the highly sensitive integrated link for making these devices with+20dBm power amplifier reaches
Industry-leading is horizontal, becomes the optimal selection of remote transmission and the application high to reliability requirement, compared to conventional modulated
Technology, LoRaTMModulation technique also has a clear superiority in terms of antiblocking and selectivity, and solving traditional design scheme can not be same
When take into account distance, anti-interference and power consumption the problem of.
NB-LoT communication module BC95 module, BC95 are a NB-LoT series module, including three models: BC95-B5,
BC95-B8 and BC95-B20, by NB-LoT radio communication protocol (3GPP Release-13), BC95 module can be with movement
The infrastructure device of network operator establishes communication, and BC95 module can be attached with numerous terminal devices, and has 19.9mm*
The super-small of 23.6mm*2.2mm is almost able to satisfy the application demand in terms of all Internet of Things, while being sealed using LCC patch
Dress, convenient for insertion consumer product application in, while use power conservation techniques, current power dissipation at battery saving mode (PSM), down to
5uA complies fully with the RoHS standard of European Union.
In the present embodiment, since millimeter wave propagation is substantially straightline propagation, in order to reduce electricity of the installation based on millimeter wave
The trouble for the railway communication equipment that gasifies, the first mm wave RF transceiver module 140 and the second mm wave RF transceiver module
150 are equipped with millimeter wave antenna, and for the millimeter wave antenna for receiving or emitting millimeter wave, the millimeter wave antenna is erected at electricity
Power is online, and gap is equipped between the millimeter wave antenna and power network.Since power network is mainly in line state, by millimeter wave day
Coil holder is located on power network, gap is equipped between the millimeter wave antenna and power network, by the way that millimeter wave antenna is erected at electricity
Power is online, propagates the propagation path of millimeter wave along power network, and is equipped with gap in millimeter wave antenna and power network, avoids electricity
The online electric current of power impacts millimeter wave antenna.
Referring to Fig. 7, in another embodiment, a kind of electric railway communication system based on millimeter wave, including electricity
Gasify railway communication equipment 210, and the electric railway communication equipment 210 is multiple, the electric railway communication equipment 210
Between pass through millimetre-wave attenuator connect；The electric railway communication equipment 210 include electricity-fetching module 110, power supply module 120,
Power line communication module 130, wireless communication module and the first mm wave RF transceiver module 140 and the transmitting-receiving of the second mm wave RF
Module 150；
The electricity-fetching module 110 is used for the current transmission that takes electricity from power network, and will acquire to power supply module 120；
The power supply module 120 is for giving power line communication module after being rectified the electric current that electricity-fetching module 110 conveys
130, the first millimeter wave transceiving module and the power supply of the second millimeter wave transceiving module；
First millimeter wave transceiving module and the second millimeter wave transceiving module are for sending and receiving millimeter wave；Wherein,
The millimeter wave that the first mm wave RF transceiver module 140 and the second mm wave RF transceiver module 150 receive or send
Frequency is 30GHz-140GHz.
The wireless communication module is connected to power line communication module 130, and the wireless communication module is used for high-voltage line
External equipment carries out signal conversion；
The power line communication module 130 is used to carry out signal conversion to millimeter wave.
Multiple electric railway communication equipments based on millimeter wave are set up by the power network interval in electric railway
210, electric railway communication equipment 210 after obtaining working power in power network, is passing through power supply mould by electricity-fetching module 110
The work of other modules of 120 treatment and supplied of block, passes through the first mm wave RF transceiver module 140 and second millimeter of radio-frequency receiving-transmitting mould
Block establishes the millimetre-wave attenuator between electric railway communication equipment 210, has extremely wide bandwidth based on millimeter wave, by natural light
Small with heat radiation influence, wave beam is narrow, has very strong penetrability, small by Doppler effect；Connected by setting wireless communication module
It is connected to power line communication module 130, after module receives the signal that the equipment outside high-voltage line is sent by wireless communication, to reception
Signal converted after, carried out data transmission by millimeter wave, it is possible to reduce transmission of the Doppler effect to detection signal
It influences, wherein high-voltage line external equipment can be the various sensors of electric railway, and sensor is for acquiring electric railway
Various data, be then sent to wireless telecom equipment carry out signal conversion after communicated by millimeter wave.
In the present embodiment, WIFI signal in motor-car or high-speed rail is provided for convenience, further includes WiFi module, the WIFI
Module is connected to power line communication module 130, and the power line communication module 130 is used to for millimeter-wave signal to be converted into network letter
Number or convert millimeter-wave signal for network signal, the WIFI module is for sending WIFI signal.When power line communication mould
Block 130 receives millimeter wave letter by the first mm wave RF transceiver module 140 or the second mm wave RF transceiver module 150
Number, network connection is established, offer WIFI signal is then carried out by WIFI module, allows to receive in motor-car or high-speed rail
To WIFI signal.
In the present embodiment, the wireless communication module is NoLa communication module, NB-LoT communication module and Zibee communication
One of module is a variety of.
In the present embodiment, since millimeter wave propagation is substantially straightline propagation, in order to reduce electricity of the installation based on millimeter wave
The trouble for the railway communication equipment 210 that gasifies, the first mm wave RF transceiver module 140 and the second mm wave RF receive and dispatch mould
Block 150 is equipped with millimeter wave antenna, and for receiving or emitting millimeter wave, the millimeter wave antenna is erected at the millimeter wave antenna
On power network, gap is equipped between the millimeter wave antenna and power network.Since power network is mainly in line state, by millimeter wave
Antenna installation is equipped with gap, by the way that millimeter wave antenna to be erected on power network between the millimeter wave antenna and power network
It on power network, propagates the propagation path of millimeter wave along power network, and is equipped with gap in millimeter wave antenna and power network, avoid
Electric current on power network impacts millimeter wave antenna.
It should be noted that being not intended to limit although the various embodiments described above have been described herein
Scope of patent protection of the invention.Therefore, it based on innovative idea of the invention, change that embodiment described herein is carried out and is repaired
Change, or using equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it directly or indirectly will be with
Upper technical solution is used in other related technical areas, is included within scope of patent protection of the invention.
Claims (6)
1. a kind of electric railway communication equipment based on millimeter wave, which is characterized in that including electricity-fetching module, power supply module, electricity
Line of force communication module, wireless communication module and the first mm wave RF transceiver module and the second mm wave RF transceiver module；
The electricity-fetching module is used for the current transmission that takes electricity from power network, and will acquire to power supply module；
The power supply module is for giving power line communication module, first millimeter after being rectified the electric current that electricity-fetching module conveys
Wave transceiver module and the power supply of the second millimeter wave transceiving module；
First millimeter wave transceiving module and the second millimeter wave transceiving module are for sending and receiving millimeter wave；
The wireless communication module is connected to power line communication module, and the wireless communication module is used for setting outside high-voltage line
It is standby to carry out signal conversion；
The power line communication module is used to carry out signal conversion to millimeter wave.
2. the electric railway communication equipment based on millimeter wave according to claim 1, which is characterized in that described first millimeter
The frequency for the millimeter wave that wave RF receiving and transmission module and the second mm wave RF transceiver module receive or send is 30GHz-140GHz.
3. the electric railway communication equipment based on millimeter wave according to claim 1, which is characterized in that further include WiFi mould
Block, the WIFI module are connected to power line communication module, and the power line communication module is for millimeter-wave signal to be converted into
Network signal is converted millimeter-wave signal by network signal, and the WIFI module is for sending WIFI signal.
4. the electric railway communication equipment based on millimeter wave according to claim 1, which is characterized in that the wireless communication
Module is one of NoLa communication module, NB-LoT communication module and Zibee communication module or a variety of.
5. the electric railway communication equipment based on millimeter wave according to claim 1, which is characterized in that described first millimeter
Wave RF receiving and transmission module and the second mm wave RF transceiver module are equipped with millimeter wave antenna, and the millimeter wave antenna is for receiving
Or transmitting millimeter wave, the millimeter wave antenna are erected on power network, and gap is equipped between the millimeter wave antenna and power network.
6. a kind of electric railway communication system based on millimeter wave, which is characterized in that any described including claim 1 to 5
Electric railway communication equipment based on millimeter wave, the electric railway communication equipment based on millimeter wave be it is multiple, it is described
It is connected between electric railway communication equipment based on millimeter wave by millimetre-wave attenuator.
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| CN209358537U (en) * | 2019-01-25 | 2019-09-06 | 福州瑞品电子科技有限公司 | A kind of electric railway communication equipment and system based on millimeter wave |
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