CN102752027A - Pure flooding adaptive low-voltage power line carrier communication unit - Google Patents
Pure flooding adaptive low-voltage power line carrier communication unit Download PDFInfo
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- CN102752027A CN102752027A CN2012102697270A CN201210269727A CN102752027A CN 102752027 A CN102752027 A CN 102752027A CN 2012102697270 A CN2012102697270 A CN 2012102697270A CN 201210269727 A CN201210269727 A CN 201210269727A CN 102752027 A CN102752027 A CN 102752027A
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Abstract
The invention discloses a pure flooding adaptive low-voltage power line carrier communication unit which comprises a power line carrier chip, a signal sending loop, a signal receiving loop, a signal coupling loop and a power supply loop. The power line carrier chip is provided with a modulation unit, a demodulation unit, a clock unit, a carrier sense unit, a group calculation unit, a parameter control unit, a frame processing unit and a serial transceiver, and the function units are connected with one another through on-chip buses. According to the pure flooding adaptive low-voltage power line carrier communication unit, an adaptive signal receiving mode and a pure flooding networking mode are used so that the reliability of power line carrier communication is improved, the system debugging work is simplified, the hardware circuit is simple and stable, and high practicability and generality are provided.
Description
Technical field:
The present invention relates to a kind of device for power line carrier communications, particularly relate to a kind of pure inundation self-adaptive low-voltage power line carrier communication unit.
Background technology:
At present, centralized power-line carrier communication system is made up of the power line carrier communication unit of some, and the power line carrier communication unit is made up of power line carrier chip, signal sending circuit, signal receiving circuit, signal coupling circuit, electric power loop again.The power line carrier communication unit with data be coupled to power line after through carrier modulation, with power line as media implementation communication, constitute complete communication system through networking between each carrier communication unit.Power line can be made full use of existing line resource as communication media, reduce cost and difficulty of construction that communication system is built.But power line is not the communication channel of special use, and interference is big on it, the impedance time variation is strong, signal is difficult to be coupled and decay comparatively fast, causes difficulty to communication; In addition; Traditional power-line carrier communication system adopts the networking of route formula more; Need carry out manual configuration or the plenty of time is carried out automatic route learning in cost to the route topological structure of network; The complexity that these have increased system debug has again reduced the practicality and the versatility of power-line carrier communication system.
Summary of the invention:
Technical problem to be solved by this invention is: overcome the deficiency of prior art, a kind of pure inundation self-adaptive low-voltage power line carrier communication unit that improves communication success rate, simplified system debugging and can accomplish networking voluntarily is provided.
Technical scheme of the present invention is: a kind of pure inundation self-adaptive low-voltage power line carrier communication unit; Contain power line carrier chip, signal sending circuit, signal receiving circuit, signal coupling circuit and electric power loop; Said power line carrier chip is provided with modulating unit, demodulating unit, clock unit, carrier sense unit, group arithmetic element, parameter control unit, frame processing unit and serial transceiver, and the above-mentioned functions unit is interconnected through bus on chip.
Said signal coupling circuit is when forming signal path, keep apart and carry out the protection of necessity with other circuit and power line on electric; Said clock unit is other unit clockings in the power line carrier chip, is responsible for producing carrier frequency signaling simultaneously.
Said frame processing unit is responsible for packet management and message frame format analysis processing, is made up of general procedure core and the embedded software that moves in it, when the message data structure need be adjusted, only needs to revise embedded software and gets final product, and has guaranteed versatility and flexibility.
The invention has the beneficial effects as follows:
1, the present invention can dynamically adjust according to channel characteristic and receive parameter, improve the communication success rate; And need not to carry out the routing parameter configuration, need not to wait for route learning; In normal data communication process, can accomplish networking voluntarily, simplify system debug, improve practicality and versatility.
2, the present invention adopts pure inundation networking, and data are that diffusion type is propagated, but not precisely the route formula is transmitted, and therefore need not network topology structure is configured, and has reduced manual intervention, the adaptive capacity that has become when having increased network.
Adopt adaptive algorithm when 3, signal of the present invention receives; Choose many group of received parameter signal is carried out the Continuous Tracking parsing, every group of parameter all can obtain an analysis result and snr value, chooses the signal to noise ratio optimum value as current analysis result; And dynamically adjust each group of received parameter through pid algorithm according to the snr value of each group; Make it tend to the corresponding value of optimum signal-noise ratio all the time, thereby obtain reception preferably, improved the communication success rate of system.
4, the present invention has improved the reliability of power line carrier communication, has simplified system debug work, and the hardware circuit simple and stable possesses advantages of high practicability and versatility, and it is applied widely, is easy to promotion and implementation, has good economic benefit.
Description of drawings:
Fig. 1 is the general function block diagram of pure inundation self-adaptive low-voltage power line carrier communication unit;
Fig. 2 is the circuit theory diagrams of pure inundation self-adaptive low-voltage power line carrier communication shown in Figure 1 unit;
Fig. 3 is the functional block diagram of power line carrier chip among Fig. 1.
Embodiment:
Embodiment: referring to Fig. 1-Fig. 3, among the figure, 1-power line carrier chip, 2-signal launching circuit; The 3-signal receiving circuit, 4-signal coupling circuit, 5-electric power loop, 6-modulating unit; The 7-demodulating unit, 8-clock unit, 9-carrier sense unit, 10-bus on chip; 11-organizes arithmetic element, 12-parameter control unit, 13-frame processing unit, 14-serial transceiver.
The power line carrier communication unit totally is made up of power line carrier chip 1, signal launching circuit 2, signal receiving circuit 3, signal coupling circuit 4 and electric power loop 5; And power line carrier chip 1 is the leitungskern place of whole communication unit; Its inside comprises modulating unit 6, demodulating unit 7, clock unit 8, carrier sense unit 9, group arithmetic element 11, parameter control unit 12, frame processing unit 13 and serial transceiver 14 again, and these functional units are interconnected through bus on chip 10.
When power line sends data; The data of sending are sent into by serial transceiver 14; After frame processing unit 13 is handled, when not listening to wave carrier conflict, send into carrier signal after modulating unit 6 produces modulation, see power line carrier chip 1 off in carrier sense unit 9; After carrying out resonator, filter and power amplification by signal launching circuit 2 again, be sent to power line through 4 couplings of signal coupling circuit.
When power line received data, the data-signal that receive was by 4 inputs of signal coupling circuit, after signal receiving circuit 3 carries out filtering protection and level translation, send into power line carrier chip 1, carried out demodulation by 7 pairs of signals of demodulating unit again; Signal after the demodulation is sent into carrier sense unit 9 on the one hand and is carried out wave carrier conflict and intercept, and sends into group arithmetic element 11 on the other hand and resolves; Group arithmetic element 11 is resolved signal with many groups parameter, obtains many group analysis results and snr value; Many group snr values are sent into parameter control unit 12, according to each group snr value each group of received parameter through dynamically adjustment group of pid algorithm arithmetic element 11, make it tend to the corresponding value of optimum signal-noise ratio all the time, realize the adaptive reception function; And the corresponding result of optimum signal-noise ratio value institute sends into frame processing unit 13 and handles acquisition reception data as current analysis result, is seen off by serial transceiver 14 at last.
After Data Receiving was accomplished, 13 pairs of packets of receiving of frame processing unit were further resolved, if its life cycle counting is non-vanishing, carried out process of transmitting once more after also will its life cycle counting being subtracted one, to realize the networking between communication unit.
Adopt pure inundation mode to carry out networking between each communication unit, source communication unit is initiated a band life cycle counted data bag to network, and all can directly be received the communication unit of this packet, in network, transmit this packet once more; During forwarding packet life cycle count value is subtracted one; Receive that the communication unit of transmitting packet carries out identical operations once more, like this, packet is through multistage forwarding; Diffusion is propagated in network, is zero up to its life cycle count value.Simultaneously, be divided into several time windows during data forwarding and carry out carrier sense and conflict avoiding, to solve the channel confliction that causes when a plurality of communication units send data simultaneously.Under this pure inundation networking mode, propagate because data are diffusion types, but not precisely the route formula is transmitted; Therefore need not network topology structure is configured or spended time carries out route learning; Reduced manual intervention, the adaptive capacity that has become when having increased network has improved practicality and versatility.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, and any simple modification that every foundation technical spirit of the present invention is done all still belongs in the scope of technical scheme of the present invention.
Claims (3)
1. pure inundation self-adaptive low-voltage power line carrier communication unit; Contain power line carrier chip, signal sending circuit, signal receiving circuit, signal coupling circuit and electric power loop; It is characterized in that: said power line carrier chip is provided with modulating unit, demodulating unit, clock unit, carrier sense unit, group arithmetic element, parameter control unit, frame processing unit and serial transceiver, and the above-mentioned functions unit is interconnected through bus on chip.
2. pure inundation self-adaptive low-voltage power line carrier communication according to claim 1 unit is characterized in that: said signal coupling circuit is when forming signal path, keep apart and carry out the protection of necessity with other circuit and power line on electric; Said clock unit is other unit clockings in the power line carrier chip, is responsible for producing carrier frequency signaling simultaneously.
3. pure inundation self-adaptive low-voltage power line carrier communication according to claim 1 unit; It is characterized in that: said frame processing unit is responsible for packet management and message frame format analysis processing; Constitute by general procedure core and the embedded software that moves in it; When the message data structure need be adjusted, only need to revise embedded software and get final product, guaranteed versatility and flexibility.
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| CN2012102697270A CN102752027A (en) | 2012-08-01 | 2012-08-01 | Pure flooding adaptive low-voltage power line carrier communication unit |
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| CN2012102697270A CN102752027A (en) | 2012-08-01 | 2012-08-01 | Pure flooding adaptive low-voltage power line carrier communication unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103281103A (en) * | 2013-05-15 | 2013-09-04 | 北京华强智连微电子有限责任公司 | OFDM (orthogonal frequency division multiplexing) power line carrier communication SOC (system on chip) |
| CN109861916A (en) * | 2018-10-31 | 2019-06-07 | 深圳向云科技有限公司 | A kind of data processing method and relevant device |
| CN110545126A (en) * | 2019-07-30 | 2019-12-06 | 中电长荣(北京)科技有限公司 | method for power line carrier communication learning and fuzzy flooding communication |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281103A (en) * | 2013-05-15 | 2013-09-04 | 北京华强智连微电子有限责任公司 | OFDM (orthogonal frequency division multiplexing) power line carrier communication SOC (system on chip) |
| CN109861916A (en) * | 2018-10-31 | 2019-06-07 | 深圳向云科技有限公司 | A kind of data processing method and relevant device |
| CN109861916B (en) * | 2018-10-31 | 2021-08-31 | 深圳向云科技有限公司 | Data processing method and related equipment |
| CN110545126A (en) * | 2019-07-30 | 2019-12-06 | 中电长荣(北京)科技有限公司 | method for power line carrier communication learning and fuzzy flooding communication |
| CN110545126B (en) * | 2019-07-30 | 2021-11-12 | 中电长荣(北京)科技有限公司 | Method for power line carrier communication learning and fuzzy flooding communication |
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Application publication date: 20121024 |