CN105450257A - Carrier communication system and data-processing method - Google Patents
Carrier communication system and data-processing method Download PDFInfo
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- CN105450257A CN105450257A CN201410419722.0A CN201410419722A CN105450257A CN 105450257 A CN105450257 A CN 105450257A CN 201410419722 A CN201410419722 A CN 201410419722A CN 105450257 A CN105450257 A CN 105450257A
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Abstract
The invention provides a carrier communication system and data-processing method. A carrier communication module modulates a data baseband signal transmitted from a network communication device into a high-frequency signal to be transmitted to a power line, and/or demodulates the high-frequency signal transmitted by the power line into the data baseband signal to be transmitted to the network communication device so as to achieve real-time data interaction and information processing between a terminal device on a rail vehicle and other devices via the power line, thereby simplifying system wire layout and saving cost.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of carrier communication system and data processing method.
Background technology
Along with networked control system of the train technology development and reach its maturity, the control train mode of railway dedicated network progressively instead of the control train mode that traditional rigid line connects, and in occupation of leading position.TCN is the data communication system of a kind of connecting vehicular equipment of Control-oriented, is the core component of distributed column vehicle control.
On current train, each equipment is except being connected with supply lines, also needs to be connected with train network bus by corresponding network interface, with proprietary telecommunication cable for physical medium transport data message.But network cable price is higher, fabrication and installation process is loaded down with trivial details, occupies the large quantity space of intra-locomotive.
Summary of the invention
For the above-mentioned defect of prior art, the embodiment of the present invention provides a kind of carrier communication system and data processing method.
The embodiment of the present invention provides a kind of carrier communication system on the one hand, and comprising: carrier communication module, network communication equipment and power line, described carrier communication module is connected with described power line with described network communication equipment respectively, wherein,
Described carrier communication module, data base-band signal for being sent by described network communication equipment is modulated into high-frequency signal and is sent to described power line, and/or the high-frequency signal that described power line sends is demodulated to data base-band signal is sent to described network communication equipment.
The embodiment of the present invention provides a kind of data processing method applied above-mentioned carrier communication system and carry out on the other hand, comprising:
Described carrier communication module receives the data base-band signal that described network communication equipment sends;
Described data base-band signal is modulated into high-frequency signal and is sent on described power line by described carrier communication module, and/or,
Described carrier communication module receives the high-frequency signal that described power line sends;
Described high-frequency signal is demodulated to data base-band signal and is sent to described network communication equipment by described carrier communication module.
The carrier communication system that the embodiment of the present invention provides and data processing method, by carrier communication module, the data base-band signal that network communication equipment sends being modulated into high-frequency signal is sent on power line, and/or the high-frequency signal that power line sends is demodulated to data base-band signal and is sent to network communication equipment, achieve between terminal equipment on rail vehicle and miscellaneous equipment by power line real-time carry out data interaction and information processing, simplify system wiring, save cost.
Accompanying drawing explanation
The structural representation of the carrier communication system that Fig. 1 provides for the embodiment of the present invention;
The flow chart of the data uplink processing method that the carrier communication system shown in the application drawing 1 that Fig. 2 provides for the embodiment of the present invention is carried out;
The flow chart of the data downstream processing method that the carrier communication system shown in the application drawing 1 that Fig. 3 provides for the embodiment of the present invention is carried out;
The structural representation of another carrier communication system that Fig. 4 provides for the embodiment of the present invention;
The flow chart of the data uplink processing method that the carrier communication system shown in the application drawing 4 that Fig. 5 provides for the embodiment of the present invention is carried out;
The flow chart of the data downstream processing method that the carrier communication system shown in the application drawing 4 that Fig. 6 provides for the embodiment of the present invention is carried out;
The structural representation of another carrier communication system that Fig. 7 provides for the embodiment of the present invention.
Embodiment
The structural representation of the carrier communication system that Fig. 1 provides for the embodiment of the present invention, as shown in Figure 1, this system comprises: carrier communication module 1, network communication equipment 2 and power line 3, carrier communication module 1 is connected with power line 3 with network communication equipment 2 respectively, wherein, carrier communication module 1, data base-band signal for being sent by network communication equipment 2 is modulated into high-frequency signal and is sent to power line 3, and/or the high-frequency signal that power line 3 sends is demodulated to data base-band signal is sent to network communication equipment 2.
The flow chart of the data uplink processing method that the carrier communication system shown in the application drawing 1 that Fig. 2 provides for the embodiment of the present invention is carried out, as shown in Figure 2, for the specific implementation process of data uplink, the method comprises:
Step 100, carrier communication module receives the data base-band signal that described network communication equipment sends;
Checkout gear on the inner each network communication equipment of rail vehicle is according to the data in the sense cycle collection preset separately equipment, wherein, above-mentioned network communication equipment specifically comprises: AuCT equipment, traction convertor equipment, charger equipment etc., the data that checkout gear gathers comprise: analog quantity detects and digital quantity detects, analog quantity detects and detects each analog signal of vehicle mainly through transducer, the input/output voltage of main detection vehicle pulling equipment, electric current, rotating speed, acceleration/deceleration, motor temperature, traction convertor temperature of power module, the input/output voltage of power supply unit, electric current, AuCT temperature of power module etc., digital quantity detects output switch parameter on main checkout equipment and On-off signal RST, the data that checkout gear gathers are not through the signal of ovennodulation, what namely gather is data base-band signal, the data base-band signal gathered by checkout gear is sent to carrier communication module by network communication equipment, carrier communication module receives the data base-band signal that network communication equipment sends.
Step 101, described data base-band signal is modulated into high-frequency signal and is sent on described power line by described carrier communication module.
The data base-band signal that network communication equipment sends is modulated into high-frequency signal by carrier communication module, and carrier wave is changed with baseband signal, even if baseband signal becomes the signal form being suitable for power line transmission, is then sent on power line by high-frequency signal.Wherein, modulation signal comprises digital signal and analog signal, carrier wave comprises continuous wave and pulse train, concrete modulation system comprises: the modulation of quadrature carrier modulation, carrier-suppressed double sideband amplitude-modulating modulation, amplitude keying, frequency keying modulation and phase keying modulation, be described for quadrature carrier modulation, quadrature carrier modulation be with two-way independently baseband signal carrier-suppressed double sideband amplitude modulation is carried out to two mutually orthogonal same frequency carrier waves, utilize the orthogonality of the frequency spectrum of this modulated signal in same bandwidth, realize the transmission of the digital information that two-way walks abreast.Be understandable that, the concrete modulation system that those skilled in the art apply should be selected according to practical situations, and the present embodiment is not restricted this.
The flow chart of the data downstream processing method that the carrier communication system shown in the application drawing 1 that Fig. 3 provides for the embodiment of the present invention is carried out, as shown in Figure 3, for the specific implementation process of data downstream, the method comprises:
Step 200, carrier communication module receives the high-frequency signal that described power line sends;
When the high-frequency signal that network communication equipment needs reception remote control device or other network communication equipments to be returned by power line back, first high-frequency signal is sent to carrier communication module by power line.
Step 201, described high-frequency signal is demodulated to data base-band signal and is sent to described network communication equipment by described carrier communication module.
High-frequency signal is demodulated to data base-band signal according to the modulation system of high-frequency signal by carrier communication module, and the data base-band signal after demodulation is sent to network communication equipment.
The carrier communication system that the present embodiment provides and data processing method, by carrier communication module, the data base-band signal that network communication equipment sends being modulated into high-frequency signal is sent on power line, and/or the high-frequency signal that power line sends is demodulated to data base-band signal and is sent to network communication equipment, achieve between terminal equipment on rail vehicle and miscellaneous equipment by power line real-time carry out data interaction and information processing, simplify system wiring, save cost.
The structural representation of another carrier communication system that Fig. 4 provides for the embodiment of the present invention, as shown in Figure 4, based on embodiment illustrated in fig. 1, carrier communication module 1 comprises: network interface 11, primary processor 12, modulator-demodulator 13 and electric source line interface 14, wherein, network interface 11 is connected with primary processor 12 and modulator-demodulator 13 respectively, electric source line interface 14 is connected with primary processor 12 and modulator-demodulator 13 respectively, primary processor 12 is connected with modulator-demodulator 13, wherein, primary processor 12, for being received the data base-band signal that network communication equipment 2 sends by network interface 11, and the modulation instructions comprising data base-band signal is sent to modulator-demodulator 13, and/or the high-frequency signal of power line 3 transmission is received by electric source line interface 14, and the demodulation instruction comprising high-frequency signal is sent to modulator-demodulator 13, modulator-demodulator 13, for receiving the modulation instructions comprising data base-band signal that primary processor 12 sends, according to modulation instructions, data base-band signal is modulated into high-frequency signal, and send to power line 3 by electric source line interface 14, and/or receive the demodulation instruction comprising high-frequency signal of primary processor 12 transmission, according to demodulation instruction, high-frequency signal is demodulated to data base-band signal, and sends to network communication equipment 2 by network interface 11.
The flow chart of the data uplink processing method that the carrier communication system shown in the application drawing 4 that Fig. 5 provides for the embodiment of the present invention is carried out, as shown in Figure 5, for the specific implementation process of data uplink, the method comprises:
Step 300, primary processor receives the data base-band signal of network communication equipment transmission by network interface, and sends the modulation instructions comprising described data base-band signal to modulator-demodulator;
Checkout gear on the inner each network communication equipment of rail vehicle is according to the data in the sense cycle collection preset separately equipment, wherein, above-mentioned network communication equipment specifically comprises: AuCT equipment, traction convertor equipment, charger equipment etc., the data that checkout gear gathers comprise: analog quantity detects and digital quantity detects, analog quantity detects and detects each analog signal of vehicle mainly through transducer, the input/output voltage of main detection vehicle pulling equipment, electric current, rotating speed, acceleration/deceleration, motor temperature, traction convertor temperature of power module, the input/output voltage of power supply unit, electric current, AuCT temperature of power module etc., digital quantity detects output switch parameter on main checkout equipment and On-off signal RST, the data that checkout gear gathers are not through the signal of ovennodulation, what namely gather is data base-band signal, the data base-band signal gathered by checkout gear is sent to network interface by network communication equipment, primary processor receives the data base-band signal of network communication equipment transmission by network interface, and the modulation instructions comprising data base-band signal is sent to modulator-demodulator.
Step 301, described data base-band signal is modulated into high-frequency signal according to described modulation instructions by described modulator-demodulator, and sends to power line by electric source line interface.
Data base-band signal is modulated into high-frequency signal according to modulation instructions by modulator-demodulator, carrier wave is changed with baseband signal, even if baseband signal becomes the signal form being suitable for power line transmission, then high-frequency signal is sent to electric source line interface, thus is sent on power line by electric source line interface.Wherein, modulation signal comprises digital signal and analog signal, carrier wave comprises continuous wave and pulse train, concrete modulation system comprises: the modulation of quadrature carrier modulation, carrier-suppressed double sideband amplitude-modulating modulation, amplitude keying, frequency keying modulation and phase keying modulation, be described for quadrature carrier modulation, quadrature carrier modulation be with two-way independently baseband signal carrier-suppressed double sideband amplitude modulation is carried out to two mutually orthogonal same frequency carrier waves, utilize the orthogonality of the frequency spectrum of this modulated signal in same bandwidth, realize the transmission of the digital information that two-way walks abreast.Be understandable that, the concrete modulation system that those skilled in the art apply should be selected according to practical situations, and the present embodiment is not restricted this.
The flow chart of the data downstream processing method that the carrier communication system shown in the application drawing 4 that Fig. 6 provides for the embodiment of the present invention is carried out, as shown in Figure 6, for the specific implementation process of data downstream, the method comprises:
Step 400, primary processor receives the high-frequency signal of described power line transmission by described electric source line interface, and sends the demodulation instruction comprising described high-frequency signal to described modulator-demodulator;
When the high-frequency signal that network communication equipment needs reception remote control device or other network communication equipments to be returned by power line back, first high-frequency signal is sent to electric source line interface by power line, high-frequency signal is returned to primary processor by electric source line interface, and primary processor sends the demodulation instruction comprising high-frequency signal to modulator-demodulator.
Step 401, described high-frequency signal is demodulated to data base-band signal according to described demodulation instruction by described modulator-demodulator, and sends to described network communication equipment by described network interface.
Modulator-demodulator receive primary processor send comprise the demodulation instruction of high-frequency signal after, according to demodulation instruction, high-frequency signal is demodulated to data base-band signal, and sends to network interface, thus send to network communication equipment by network interface.
The carrier communication system that the present embodiment provides and data processing method, according to the modulation instructions comprising data base-band signal that primary processor sends, the data base-band signal that network communication equipment sends being modulated into high-frequency signal by modulator-demodulator is sent on power line, and/or the high-frequency signal that power line sends is demodulated to data base-band signal is sent to network communication equipment according to the demodulation instruction comprising high-frequency signal that primary processor sends, achieve between terminal equipment on rail vehicle and miscellaneous equipment by power line real-time carry out data interaction and information processing, simplify system wiring, save cost.
The structural representation of another carrier communication system that Fig. 7 provides for the embodiment of the present invention, as shown in Figure 7, based on embodiment illustrated in fig. 4, carrier communication module 1 also comprises: power amplifier 15, wherein, power amplifier 15 is connected with modulator-demodulator 13 and electric source line interface 14 respectively, wherein, power amplifier 15, high-frequency signal for sending modulator-demodulator 13 carries out power amplification process, and send to power line 3 by electric source line interface 14, and/or power amplification process is carried out to the high-frequency signal through noise reduction process that electric source line interface 14 sends, and send to modulator-demodulator 13.
The present embodiment carries out power amplification process by power amplifier to the high-frequency signal that modulator-demodulator sends, and send to described power line by electric source line interface, and/or power amplification process is carried out to the high-frequency signal after noise filtering process that electric source line interface sends, and send to modulator-demodulator, decrease the interference of noise to signal transacting.
Further, electric source line interface 14 is for after carrying out filtering process to high-frequency signal, filtered high-frequency signal is coupled on power line 3, after the present embodiment carries out filtering process by electric source line interface to high-frequency signal, filtered high-frequency signal is coupled to power line, improves the transmitting efficiency of high-frequency signal.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a carrier communication system, is characterized in that, comprising: carrier communication module, network communication equipment and power line, and described carrier communication module is connected with described power line with described network communication equipment respectively, wherein,
Described carrier communication module, data base-band signal for being sent by described network communication equipment is modulated into high-frequency signal and is sent to described power line, and/or the high-frequency signal that described power line sends is demodulated to data base-band signal is sent to described network communication equipment.
2. carrier communication system according to claim 1, it is characterized in that, described carrier communication module comprises: network interface, primary processor, modulator-demodulator and electric source line interface, wherein, described network interface is connected with described primary processor and described modulator-demodulator respectively, and described electric source line interface is connected with described primary processor and described modulator-demodulator respectively, and described primary processor is connected with described modulator-demodulator, wherein
Described primary processor, for being received the data base-band signal that described network communication equipment sends by described network interface, and the modulation instructions comprising described data base-band signal is sent to described modulator-demodulator, and/or received the high-frequency signal of described power line transmission by described electric source line interface, and send the demodulation instruction comprising described high-frequency signal to described modulator-demodulator;
Described modulator-demodulator, for receiving the modulation instructions comprising described data base-band signal that described primary processor sends, according to described modulation instructions, described data base-band signal is modulated into high-frequency signal, and send to described power line by described electric source line interface, and/or receive the demodulation instruction comprising described high-frequency signal of described primary processor transmission, according to described demodulation instruction, described high-frequency signal is demodulated to data base-band signal, and sends to described network communication equipment by described network interface.
3. carrier communication system according to claim 2, is characterized in that, described carrier communication module also comprises: power amplifier, and wherein, described power amplifier is connected with described modulator-demodulator and described electric source line interface respectively, wherein,
Described power amplifier, described high-frequency signal for sending described modulator-demodulator carries out power amplification process, and send to described power line by described electric source line interface, and/or power amplification process is carried out to the high-frequency signal through noise reduction process that described electric source line interface sends, and send to described modulator-demodulator.
4. carrier communication system according to claim 3, is characterized in that,
Described electric source line interface, after carrying out filtering process to described high-frequency signal, is coupled to filtered high-frequency signal on described power line.
5. according to the arbitrary described carrier communication system of claim 1-4, it is characterized in that, the modulation system that described carrier communication module is applied specifically comprises: the modulation of quadrature carrier modulation, carrier-suppressed double sideband amplitude-modulating modulation, amplitude keying, frequency keying modulation and phase keying modulation.
6. application as arbitrary in claim 1 to 5 as described in a carrier communication system data processing method of carrying out, it is characterized in that, comprising:
Described carrier communication module receives the data base-band signal that described network communication equipment sends;
Described data base-band signal is modulated into high-frequency signal and is sent on described power line by described carrier communication module, and/or,
Described carrier communication module receives the high-frequency signal that described power line sends;
Described high-frequency signal is demodulated to data base-band signal and is sent to described network communication equipment by described carrier communication module.
7. data processing method according to claim 6, it is characterized in that, described carrier communication module comprises: network interface, primary processor, modulator-demodulator and electric source line interface, wherein, described network interface is connected with described primary processor and described modulator-demodulator respectively, described electric source line interface is connected with described primary processor and described modulator-demodulator respectively, described primary processor is connected with described modulator-demodulator, described carrier communication module receives the data base-band signal that described network communication equipment sends, described data base-band signal is modulated into high-frequency signal to be sent on described power line and specifically to comprise:
Described primary processor receives the data base-band signal of described network communication equipment transmission by described network interface, and sends the modulation instructions comprising described data base-band signal to described modulator-demodulator,
Described data base-band signal is modulated into high-frequency signal according to described modulation instructions by described modulator-demodulator, and sends to described power line by described electric source line interface; And/or,
Described carrier communication module receives the high-frequency signal that described power line sends, and described high-frequency signal is demodulated to data base-band signal and is sent to described network communication equipment and specifically comprises:
Described primary processor receives the high-frequency signal of described power line transmission by described electric source line interface, and sends the demodulation instruction comprising described high-frequency signal to described modulator-demodulator;
Described high-frequency signal is demodulated to data base-band signal according to described demodulation instruction by described modulator-demodulator, and sends to described network communication equipment by described network interface.
8. data processing method according to claim 7, is characterized in that, described modulator-demodulator is connected with described electric source line interface by power amplifier, and described method also comprises:
Described power amplifier carries out power amplification process to the described high-frequency signal that described modulator-demodulator sends, and sends to described power line by described electric source line interface, and/or,
Described power amplifier carries out power amplification process to the high-frequency signal after noise filtering process that described electric source line interface sends, and sends to described modulator-demodulator.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110113077A (en) * | 2018-02-01 | 2019-08-09 | 吴学瑞 | For controlling the communication means of the automobile-used lifting device of track |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040037214A1 (en) * | 2000-12-18 | 2004-02-26 | Blasco Claret Jorge Vicente | Point to multipoint system and process for the transmission over the electricity network of digital data |
| CN101118692A (en) * | 2007-08-29 | 2008-02-06 | 北京意科通信技术有限责任公司 | Indoor temperature monitoring system and monitoring methods thereof |
| CN103607223A (en) * | 2013-11-29 | 2014-02-26 | 国家电网公司 | Embedded type broadband power line carrier communication system based on OFDM modulation |
| CN103684577A (en) * | 2012-09-10 | 2014-03-26 | 于佳亮 | System, device and method for mobile communication based on rail transit electric power contact system |
-
2014
- 2014-08-22 CN CN201410419722.0A patent/CN105450257A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040037214A1 (en) * | 2000-12-18 | 2004-02-26 | Blasco Claret Jorge Vicente | Point to multipoint system and process for the transmission over the electricity network of digital data |
| CN101118692A (en) * | 2007-08-29 | 2008-02-06 | 北京意科通信技术有限责任公司 | Indoor temperature monitoring system and monitoring methods thereof |
| CN103684577A (en) * | 2012-09-10 | 2014-03-26 | 于佳亮 | System, device and method for mobile communication based on rail transit electric power contact system |
| CN103607223A (en) * | 2013-11-29 | 2014-02-26 | 国家电网公司 | Embedded type broadband power line carrier communication system based on OFDM modulation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110113077A (en) * | 2018-02-01 | 2019-08-09 | 吴学瑞 | For controlling the communication means of the automobile-used lifting device of track |
| CN110113077B (en) * | 2018-02-01 | 2021-08-13 | 肯塔斯股份有限公司 | Communication method for controlling a lifting device for a rail vehicle |
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Application publication date: 20160330 |