CN201994935U - Communication system with modulation signal capable of penetrating through transformer based on power line - Google Patents
Communication system with modulation signal capable of penetrating through transformer based on power line Download PDFInfo
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- CN201994935U CN201994935U CN2010206615149U CN201020661514U CN201994935U CN 201994935 U CN201994935 U CN 201994935U CN 2010206615149 U CN2010206615149 U CN 2010206615149U CN 201020661514 U CN201020661514 U CN 201020661514U CN 201994935 U CN201994935 U CN 201994935U
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Abstract
The utility model provides a communication system with a modulation signal capable of penetrating through a transformer based on a power line, which comprises a centralized data collection control device of a master station, a descending modulation processing device of a carrier communication WPLC signal of a wide-area power line and a collection terminal, wherein the centralized data collection control device of the master station is connected with the data center of an electric power bureau; the descending modulation processing device of the carrier communication WPLC signal of the wide-area power line is connected with the centralized data collection control device of the master station by a communication cable transmitting a descending collection control signal; and the collection terminal is connected with the descending modulation processing device of the WPLC signal by a low-voltage power line, a user transformer positioned at the side of the collection terminal and a high-voltage power line transmitting a WPLC modulation signal, which are sequentially connected, and is also connected with a user terminal. According to the communication system with the modulation signal capable of penetrating through the transformer based on the power line, the problem of decrease of the transmission reliability, which is caused by the condition that the forwarding of a plurality of relays is needed in the prior art, is solved, and the aims that the transmission distance is far, the signal can penetrate through the transformer and the communication reliability is high are realized.
Description
Technical field
The utility model relates to the power communication field, in particular to a kind of communication system that can pass through transformer based on the modulation signal of power line.
Background technology
At present, be the communication that carrier is realized with the power distribution network power line, all belong to power line carrier communication (PLC), its implication is: by information " being carried " what reach transmission information (communication) on the power line is exactly power line carrier communication.Power line carrier communication is a kind of quite ripe communication technology, its implementation procedure all is loaded into " modulation signal " (continuous often in a certain period) on the power line, the modulation wave frequency approximately is tens to hundreds of KHZ, also have plenty of several MHZ, the modulation signal strictness of this frequency says it is " on the distributed constant " that is loaded into power line, its information is not at the electric power above-the-line promotion, but on the distributed capacitance between power line and the adjacent object, propagate.It below all is traditional power line carrier communication.
Yet,, and be not suitable for the common PLC signal that transmission frequency is higher than power frequency far away owing to the relevant devices on power line and the power distribution network all designs with transmission AC energy (50HZ), communication as transmission medium, frequency is high more, and signal attenuation is serious more, and transmission reliability is low more.Therefore, if use traditional power line carrier communication to realize telecommunication, must could realize telecommunication through relaying repeatedly, multirouting repeatedly relaying certainty reduce the reliability that signal transmits greatly.
At the problem in the correlation technique, effective solution is not proposed as yet at present.
The utility model content
Main purpose of the present utility model is to provide a kind of communication system that can pass through transformer based on the modulation signal of power line, to address the above problem.
According to one side of the present utility model, a kind of communication system that can pass through transformer based on the modulation signal of power line is provided, it comprises: main website intensive data acquisition control device is connected with data center of power office; Wide area power line carrier communication WPLC signal downlink modulation treatment device, the telecommunication cable by transmitting descending acquisition controlling signal is connected with above-mentioned main website intensive data acquisition control device; Acquisition terminal is connected with above-mentioned WPLC signal downlink modulation treatment device by low-voltage power line, user transformers that is positioned at above-mentioned acquisition terminal side that links to each other successively and the high-voltage power line that transmits the WPLC modulation signal, and is connected with user terminal.
Further, above-mentioned WPLC signal downlink modulation treatment device comprises: outdoor modulating device is connected with above-mentioned main website intensive data acquisition control device by above-mentioned telecommunication cable; Modulation transformer, low-voltage power line by the transmission WPLC signal modulation instructions corresponding with above-mentioned descending acquisition controlling signal is connected with above-mentioned outdoor modulating device, and is connected with above-mentioned acquisition terminal by high-voltage power line, transformer station's high voltage bus, above-mentioned user transformers, the low-voltage power line of the transmission that links to each other the successively above-mentioned WPLC modulation signal corresponding with above-mentioned WPLC signal modulation instructions.
Further, above-mentioned outdoor modulating device comprises: trigger element is connected to above-mentioned main website intensive data acquisition control device by the telecommunication cable that transmits above-mentioned descending acquisition controlling signal; Control unit, lead by the transmission triggering signal corresponding with above-mentioned descending acquisition controlling signal is connected to above-mentioned trigger element, and is connected with above-mentioned modulation transformer by the low-voltage power line of the transmission above-mentioned WPLC signal modulation instructions corresponding with above-mentioned triggering signal.
Further, above-mentioned control unit is a Group of Silicon Controlled Rectifier, and wherein, the action of above-mentioned Group of Silicon Controlled Rectifier changes according to above-mentioned triggering signal.
Further, also comprise: WPLC signal uplink modulation treatment device, is connected with above-mentioned acquisition terminal by high-voltage power line, above-mentioned user transformers that links to each other successively and the low-voltage power line that has transmitted the upstream data control signal corresponding, and modulates the distort telecommunication cable of control signal of power frequency voltage waveform by the transmission WPLC signal corresponding and be connected with above-mentioned main website intensive data acquisition control device with above-mentioned upstream data control signal with user terminal data.
Further, above-mentioned WPLC signal uplink modulation treatment device comprises Group of Silicon Controlled Rectifier, and wherein, the action of above-mentioned Group of Silicon Controlled Rectifier changes according to above-mentioned upstream data control signal.
Further, above-mentioned main website intensive data acquisition control device comprises: upward signal parallel receive and demodulating unit are connected with above-mentioned WPLC signal uplink modulation treatment device by transformer station's outlet.
Further, above-mentioned main website intensive data acquisition control device is connected with data center of above-mentioned power office by network and/or optical fiber.
Further, above-mentioned user terminal is ammeter or street lamp.
Further, above-mentioned user terminal is connected with above-mentioned acquisition terminal by the interface of the above-mentioned descending acquisition controlling signal of transmission, wherein, above-mentioned interface comprise following one of at least: 485 parallel ports, 485 serial ports or wireless transmission interface.
In the utility model, the low-voltage power line of acquisition terminal by linking to each other successively, be positioned at the user transformers of described acquisition terminal side, transmission is connected with described WPLC signal modulation process device by the high-voltage power line of the WPLC modulation signal corresponding with described descending acquisition controlling signal of described WPLC signal downlink modulation treatment device modulates, thereby utilized the WPLC modulation signal to pass through transformer, the problem that having solved needs a plurality of relayings forwardings of process and cause in the prior art transmission reliability descends, realized long transmission distance, signal can pass through transformer, the communication reliability height.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram based on the downstream signal of WPLC according to the utility model embodiment;
Fig. 2 is the schematic diagram based on the upward signal of WPLC according to the utility model embodiment;
Fig. 3 is a kind of preferred structure schematic diagram that can pass through the communication system of transformer according to the modulation signal based on power line of the utility model embodiment;
Fig. 4 is a kind of preferred structure schematic diagram that can pass through the communication system of transformer according to the modulation signal based on power line that is used for remote meter reading of the utility model embodiment;
Fig. 5 is the another kind of preferred structure schematic diagram that can pass through the communication system of transformer according to the modulation signal based on power line that is used for remote meter reading of the utility model embodiment;
Fig. 6 is according to the power office of the utility model embodiment and the connection diagram of distribution substation;
Fig. 7 is the connection diagram according to the acquisition module of the utility model embodiment and user's electric energy meter.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
Hereinafter will describe the utility model with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
The notion of WPLC is described at first in conjunction with the accompanying drawings.
The power frequency distortion communication technology is the abbreviation of power distribution network industrial frequency two-way communication, or title WPLC (wide area power line carrier communication), divide from " communication media " that use, it belongs to power line carrier communication, in like manner: utilize atmospheric radio waves to do the communication of media implementation " radio communication " (as microwave communication, short wave communication, ultra short wave communication, microwave communication etc.); Utilize optical fiber to do the communication of media implementation " optical fiber communication "; Utilize power line to do the communication of media implementation " power line carrier communication ".In the communication mode that uses with a kind of communication media, can continue to divide in detail according to different modulation demodulation systems again, be not repeated herein.
The wide area power line carrier communication belongs to power line carrier communication, but the modulation system of it and traditional power line carrier communication exists the difference of essence, traditional power line carrier communication be with modulation signal " loading " to power line, with the information of carrying, as arrowband power line carrier communication, broadband power line carrier communication; And the wide area power line carrier communication is the modulation technique by uniqueness, makes the voltage and current waveform of power line produce small distortion (distortion) near zero-crossing point, and carries information by the small distortion of power frequency sine wave shape.Be communication media with distribution network (10KV and 380V circuit) promptly, reliable existing digital bidirectional communication is carried in the small distortion at the zero crossing place by power frequency sinusoidal voltage waveform.
The power frequency distortion is the digital semi-duplex communication by power distribution network, its basic concept is that the small distortion of voltage or current signal is defined as " 0 " or " 1 ", a plurality of different distortion are equivalent to the continuity of " 0 " and " 1 ", promptly binary digit " 0 " or " 1 " are represented in the small distortion of voltage or current signal, and in 380V and 10KV circuit, realized bi-directional information in this way.
Generally calling downstream signal to the signal that the user transmits address or order, and the signal that user profile is passed to transformer station is called upward signal from transformer station.General downstream signal adopts voltage modulation signal, and upward signal adopts current modulated." 0 " and " 1 " has various definitions, and for example: Fig. 1 is a kind of basic definition of " 1 " Yu " 0 " of downstream signal,
Fig. 2 is a kind of in the basic definition of upward signal " 1 ".Different " 0 " and the definition and the coded system of " 1 " are for the sensitiveness difference of electric power system interference.
Fig. 1 is descending and Fig. 2 is up, all is modulation voltage, and different is the descending power end that is modulated at distribution line, still is the distortion of voltage waveform when modulation signal is delivered to load end; The up load end that is modulated at distribution line, what reflect when modulation signal is delivered to power end is the distortion of current waveform.
WPLC (wide area power line carrier communication), also belong to power line carrier communication, but be essentially different with traditional power line carrier communication on the modulation system, it or not load-modulate signal on power line carrier, but the power voltage line waveform by zero point near short circuit whether respectively representative " 1 " reach the purpose of communicating by letter with the mode of " 0 " (digital communication), as previously mentioned.
The frequency spectrum of WPLC (wide area power line carrier communication) modulation signal is 200～400HZ; And the frequency of traditional arrowband power line carrier modulation signal is 100KHZ～120KHZ, and the frequency of broadband power line carrier (boc) modulated signals is several～tens MHZ.This also is that distinct modulation system has determined big difference like this.
Compared with prior art, the frequency of WPLC (wide area power line carrier communication) is lower than 7 subharmonic of industrial-frequency alternating current, so signal in power line propagation attenuation than little many of traditional power line carrier, realized long transmission distance, signal can pass through transformer, the communication reliability height, realized with whole power distribution network being the communication of medium, it is near fundamentally to have solved conventional powerline carrier transmission distance, can not pass through transformer, the problem that communication reliability is low.
Utilize the power frequency modulation technique to realize that at existing power distribution network non-relay and bridging device just can pass through transformer, bidirectional data communication and exchanges data between the circuit of different electric pressures, have been realized, the modulation signal frequency band of this distribution communication 200～～600Hz between, the power density spectrum maximum point of modulation signal concentrates near 315Hz (in the middle of 5 subharmonic and 7 subharmonic of power-frequency voltage), though the signal of this frequency range has decay in Industrial Frequency Transformer, but can also pass through Industrial Frequency Transformer more smoothly, therefore signal can pass through user transformers, between transformer station and low-voltage customer, carry out the half-duplex exchange of data along distribution line (whole 380V and 10KV circuit are used as communication media), thereby the distribution communication that successful handle is dispersed in everywhere all is aggregated into distribution transformer station, and it is many to have solved communication node, the problem that node disperses.
Fig. 3 is a kind of preferred structure schematic diagram that can pass through the communication system of transformer according to the modulation signal based on power line of the utility model embodiment, and it comprises:
1) main website intensive data acquisition control device 202 is connected with data center of power office.
2) WPLC signal downlink modulation treatment device 204, are connected with described main website intensive data acquisition control device 202 by telecommunication cable.Preferably, above-mentioned telecommunication cable is used to transmit descending acquisition controlling signal.Preferably, WPLC signal downlink modulation treatment device 204 is used to generate and the corresponding WPLC modulation signal of described descending acquisition controlling signal.
3) acquisition terminal 206, are connected with described WPLC signal downlink modulation treatment device 204 with high-voltage power line, and are connected with user terminal by the low-voltage power line that links to each other successively, the user transformers that is positioned at described acquisition terminal side.Preferably, above-mentioned high-voltage power line is used to transmit above-mentioned WPLC modulation signal.
In the utility model, the low-voltage power line of acquisition terminal by linking to each other successively, be positioned at the user transformers of described acquisition terminal side, transmission is connected with described WPLC signal modulation process device by the high-voltage power line of the WPLC modulation signal corresponding with described descending acquisition controlling signal that described WPLC signal downlink modulation treatment device generates, thereby utilized the WPLC modulation signal to pass through transformer, the problem that having solved needs a plurality of relayings forwardings of process and cause in the prior art transmission reliability descends, realized long transmission distance, signal can pass through transformer, the communication reliability height.
Preferably, as shown in Figure 5, described WPLC signal downlink modulation treatment device 204 comprises: outdoor modulating device is connected with described main website intensive data acquisition control device by described telecommunication cable; Modulation transformer is connected with described outdoor modulating device by low-voltage power line, and is connected with described acquisition terminal by high-voltage power line, transformer station's high voltage bus, above-mentioned user transformers, the low-voltage power line that links to each other successively.Preferably, the above-mentioned low-voltage power line that connects with modulation transformer is used to transmit the WPLC signal modulation instructions corresponding with described descending acquisition controlling signal, and the above-mentioned high-voltage power line that connects with modulation transformer is used to transmit the described WPLC modulation signal corresponding with described WPLC signal modulation instructions.
Preferably, described outdoor modulating device comprises: trigger element is connected to described main website intensive data acquisition control device by above-mentioned telecommunication cable (this telecommunication cable is used to transmit above-mentioned descending acquisition controlling signal); Control unit is connected to described trigger element by lead, and is connected with described modulation transformer by low-voltage power line.Preferably, above-mentioned lead is used to transmit and the corresponding triggering signal of described descending acquisition controlling signal, and the above-mentioned low-voltage power line that connects with modulation transformer is used to transmit the WPLC signal modulation instructions corresponding with described triggering signal.
Preferably, described control unit is a Group of Silicon Controlled Rectifier, and wherein, the action of described Group of Silicon Controlled Rectifier changes according to described triggering signal.
Preferably, system according to the utility model embodiment also comprises: WPLC signal uplink modulation treatment device, be connected with described acquisition terminal by high-voltage power line, the above-mentioned user transformers that is positioned at described acquisition terminal side and the low-voltage power line that links to each other successively, and be connected with described main website intensive data acquisition control device by telecommunication cable.Preferably, the low-voltage power line that above-mentioned and acquisition terminal connect is used to transmit the upstream data control signal corresponding with user terminal data, and telecommunication cable above-mentioned and that main website intensive data acquisition control device connects is used to transmit and the corresponding WPLC signal modulation power frequency voltage waveform of the described upstream data control signal control signal that distorts.
Preferably, described WPLC signal uplink modulation treatment device comprises Group of Silicon Controlled Rectifier, and wherein, the action of described Group of Silicon Controlled Rectifier changes according to described upstream data control signal.
Preferably, described main website intensive data acquisition control device 202 comprises: upward signal parallel receive and demodulating unit are connected with described WPLC signal uplink modulation treatment device by transformer station's outlet.
Preferably, as shown in Figure 6, described main website intensive data acquisition control device (main website control flow) is connected with data center of described power office (marketing center of power office) by network and/or optical fiber.
Preferably, described user terminal is an ammeter, as Fig. 4 and shown in Figure 7.Certainly, this is a kind of example, and the utility model is not limited only to this, and for example, described user terminal can also be street lamp etc.
Preferably, described ammeter or street lamp are connected with described acquisition terminal by 485 parallel ports, as Fig. 4 and shown in Figure 7.Preferably, 485 parallel ports are used to transmit above-mentioned descending acquisition controlling signal.Certainly, this is a kind of example, and the utility model is not limited only to this, and for example, described ammeter or street lamp can also be connected with acquisition terminal by 485 serial ports or wireless transmission interface.
Preferably, low-voltage power line of being mentioned in the utility model and high-voltage power line can adopt the standard in the existing electric power system to define, and for example, low pressure is 380V, and high pressure is 10KV.
The communication system that the modulation signal based on power line that below will be used for remote meter reading can pass through transformer is that example is described the utility model, and certainly, the utility model is not limited only to this, can also be applied in other field, for example, and length of run collection or control street lamp.
Shown in Fig. 4-7, comprise according to the platform district long-distance meter-reading system of striding of this preferred embodiment: main website control flow, acquisition terminal and user's electric energy meter.Wherein, the communication process of striding platform district long-distance meter-reading system has following 3 parts:
(1) main website control flow and marketing center of power office communicates by letter, be that the main website control flow of big system or the main website control flow of mini system all possess the ability of communicating by letter (power private network, electric power MODEN or optical fiber) with marketing center of power office, guarantee that distribution substation can receive the instruction and the control of marketing center of power office; Also can guarantee that the data that acquisition terminal collects can be transferred to marketing center of power office.
(2) communicating by letter between acquisition terminal and the user's electric energy meter, this is the basic guarantee of acquisition terminal from user's electric energy meter, also is the whole final main meter-reading function of realizing of platform district long-distance meter-reading system of striding.
(3) communicating by letter between main website control flow and the acquisition terminal, this is to be the two-way communication of media implementation with the power distribution network, and descending is the data acquisition instruction, and up is the image data of transmission.
Below specifically describe the workflow of striding each parts in the platform district long-distance meter-reading system based on Fig. 5 according to this preferred embodiment:
As shown in Figure 5, the downlink communication process comprises: the main control unit of main website control flow by appointment data acquisition time or according to the instruction of marketing center of power office, descending modulator control signal is dealt into outdoor modulation case, the trigger element of outdoor modulation case is according to modulator control signal, send the action of triggering signal control silicon controlled, controllable silicon is the 380V side that is connected to modulation transformer (3 phase), produce the power frequency voltage waveform distortion by modulation transformer in the 10KV side, the 10KV side of modulation transformer is to be connected on the 10KV bus of transformer station, so the power frequency voltage waveform in all 10KV outlets of transformer station has produced distortion.After power frequency voltage waveform distortion information in each bar 10KV outlet is passed through user transformers, be delivered to the acquisition terminal of all low pressure (380V) user side of this transformer connection.Be equivalent to finish the process of downlink communication in the mode of broadcasting.Descending communication signal has comprised address information and command information.(downlink communication refers to the communication of main website control flow to acquisition terminal).
As shown in Figure 5, the uplink communication process comprises: the acquisition terminal of all user sides has all been received address information and the command information that the main website control flow is sent in the downlink communication process, each acquisition terminal all has main control unit and default IP address, acquisition terminal is only carried out the command information of corresponding this IP address of terminal, and according to command content by being connected to 485 mouthfuls of data that read electric energy meter of user's electric energy meter, the data upload that the main control unit of acquisition terminal is responsible for reading is to the main website control flow, uplink communication process that Here it is, its concrete implementation is: the main control unit of acquisition terminal sends up modulator control signal, the control controllable silicon produces the power frequency voltage waveform distortion information in low-pressure side (380V), voltage waveform distortion has comprised the data of uploading, different with downlink communication is is reflected on the power line at load side modulation voltage waveform is the distortion of current waveform, the distorted signal of this current waveform is crossed over user transformers and is delivered to the 10KV side, and through the through distribution substation of 10KV power line, in every 10KV outlet, CT is arranged all, the current waveform distortion that is reacted on the CT is received by the upward signal parallel receive demodulating unit of main website control flow, handle and demodulate the data-signal that the main control unit of acquisition terminal is uploaded, the main website control flow has been finished the uplink communication process with the database of this data upload to marketing center of power office.The upward signal parallel receive demodulating unit of main website control flow is the core of WPLC (wide area power line carrier communication) technology to extraction, processing and the demodulation of upward signal.
As can be seen from the above description, embodiment of the present utility model has realized following technique effect:
Conventional powerline carrier wave incompatibility rural power system remote meter reading distance, the user disperses, communication reliability is low problem have been overcome based on " long-distance meter-reading system " of WPLC (wide area power line carrier communication) communication technology.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present utility model or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, carry out by calculation element thereby they can be stored in the storage device, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the utility model is not restricted to any specific hardware and software combination.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. the communication system that can pass through transformer based on the modulation signal of power line is characterized in that, comprising:
Main website intensive data acquisition control device is connected with data center of power office;
Wide area power line carrier communication WPLC signal downlink modulation treatment device, the telecommunication cable by transmitting descending acquisition controlling signal is connected with described main website intensive data acquisition control device;
Acquisition terminal is connected with described WPLC signal downlink modulation treatment device by low-voltage power line, user transformers that is positioned at described acquisition terminal side that links to each other successively and the high-voltage power line that transmits the WPLC modulation signal, and is connected with user terminal.
2. system according to claim 1 is characterized in that, described WPLC signal downlink modulation treatment device comprises:
Outdoor modulating device is connected with described main website intensive data acquisition control device by described telecommunication cable;
Modulation transformer, low-voltage power line by the transmission WPLC signal modulation instructions corresponding with described descending acquisition controlling signal is connected with described outdoor modulating device, and is connected with described acquisition terminal by high-voltage power line, transformer station's high voltage bus, described user transformers, the low-voltage power line of the transmission that links to each other the successively described WPLC modulation signal corresponding with described WPLC signal modulation instructions.
3. system according to claim 2 is characterized in that, described outdoor modulating device comprises:
Trigger element is connected to described main website intensive data acquisition control device by the telecommunication cable that transmits described descending acquisition controlling signal;
Control unit, lead by the transmission triggering signal corresponding with described descending acquisition controlling signal is connected to described trigger element, and is connected with described modulation transformer by the low-voltage power line of the transmission described WPLC signal modulation instructions corresponding with described triggering signal.
4. system according to claim 3 is characterized in that, described control unit is a Group of Silicon Controlled Rectifier, and wherein, the action of described Group of Silicon Controlled Rectifier changes according to described triggering signal.
5. system according to claim 1 is characterized in that, also comprises:
WPLC signal uplink modulation treatment device, is connected with described acquisition terminal by high-voltage power line, described user transformers that links to each other successively and the low-voltage power line that has transmitted the upstream data control signal corresponding, and modulates the distort telecommunication cable of control signal of power frequency voltage waveform by the transmission WPLC signal corresponding and be connected with described main website intensive data acquisition control device with described upstream data control signal with user terminal data.
6. system according to claim 5 is characterized in that, described WPLC signal uplink modulation treatment device comprises Group of Silicon Controlled Rectifier, and wherein, the action of described Group of Silicon Controlled Rectifier changes according to described upstream data control signal.
7. system according to claim 5 is characterized in that, described main website intensive data acquisition control device comprises:
Upward signal parallel receive and demodulating unit are connected with described WPLC signal uplink modulation treatment device by transformer station's outlet.
8. system according to claim 5 is characterized in that, described main website intensive data acquisition control device is connected with data center of described power office by network and/or optical fiber.
9. system according to claim 1 is characterized in that, described user terminal is ammeter or street lamp.
10. system according to claim 9, it is characterized in that, described user terminal is connected with described acquisition terminal by the interface of the described descending acquisition controlling signal of transmission, wherein, described interface comprise following one of at least: 485 parallel ports, 485 serial ports or wireless transmission interface.
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| CN2010206615149U CN201994935U (en) | 2010-12-15 | 2010-12-15 | Communication system with modulation signal capable of penetrating through transformer based on power line |
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| CN2010206615149U CN201994935U (en) | 2010-12-15 | 2010-12-15 | Communication system with modulation signal capable of penetrating through transformer based on power line |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102497220A (en) * | 2011-12-13 | 2012-06-13 | 重庆大学 | Calling system based on flexible alternating current signal technology and communication method for calling system |
| CN103763838A (en) * | 2014-01-24 | 2014-04-30 | 重庆恒又源科技发展有限公司 | Illumination control information sending method and device and illumination control system |
| CN104333142A (en) * | 2014-11-26 | 2015-02-04 | 国网宁夏电力公司固原供电公司 | Running mode of low voltage special variable terminal |
| CN105098985A (en) * | 2015-08-21 | 2015-11-25 | 光一科技股份有限公司 | System and method for identifying user change relationships in low-voltage power distribution based on power-frequency voltage distortion |
| CN107104702A (en) * | 2016-02-19 | 2017-08-29 | 恩智浦有限公司 | A kind of communication system and device |
| CN104917547B (en) * | 2015-06-25 | 2018-04-24 | 威胜集团有限公司 | A kind of power-frequency communication of electric system based on TPLC |
| CN113645517A (en) * | 2021-01-26 | 2021-11-12 | 青岛鼎信通讯股份有限公司 | Power line multi-frequency concurrent communication system |
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2010
- 2010-12-15 CN CN2010206615149U patent/CN201994935U/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102497220A (en) * | 2011-12-13 | 2012-06-13 | 重庆大学 | Calling system based on flexible alternating current signal technology and communication method for calling system |
| CN102497220B (en) * | 2011-12-13 | 2014-09-24 | 重庆大学 | Calling system based on flexible alternating current signal technology and communication method for calling system |
| CN103763838A (en) * | 2014-01-24 | 2014-04-30 | 重庆恒又源科技发展有限公司 | Illumination control information sending method and device and illumination control system |
| CN103763838B (en) * | 2014-01-24 | 2015-12-02 | 重庆恒又源科技发展有限公司 | Lighting control method for sending information, equipment and Lighting Control Assembly |
| CN104333142A (en) * | 2014-11-26 | 2015-02-04 | 国网宁夏电力公司固原供电公司 | Running mode of low voltage special variable terminal |
| CN104917547B (en) * | 2015-06-25 | 2018-04-24 | 威胜集团有限公司 | A kind of power-frequency communication of electric system based on TPLC |
| CN105098985A (en) * | 2015-08-21 | 2015-11-25 | 光一科技股份有限公司 | System and method for identifying user change relationships in low-voltage power distribution based on power-frequency voltage distortion |
| CN105098985B (en) * | 2015-08-21 | 2017-12-01 | 光一科技股份有限公司 | Method for becoming relational system based on power-frequency voltage Distortion recognition low-voltage distribution family |
| CN107104702A (en) * | 2016-02-19 | 2017-08-29 | 恩智浦有限公司 | A kind of communication system and device |
| CN113645517A (en) * | 2021-01-26 | 2021-11-12 | 青岛鼎信通讯股份有限公司 | Power line multi-frequency concurrent communication system |
| CN113645517B (en) * | 2021-01-26 | 2024-03-19 | 青岛鼎信通讯股份有限公司 | Power line multi-frequency concurrent communication system |
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