CN204836167U - Carrier communication module - Google Patents
Carrier communication module Download PDFInfo
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- CN204836167U CN204836167U CN201520471790.1U CN201520471790U CN204836167U CN 204836167 U CN204836167 U CN 204836167U CN 201520471790 U CN201520471790 U CN 201520471790U CN 204836167 U CN204836167 U CN 204836167U
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Abstract
The utility model discloses a carrier communication module, including carrying out the carrier control chip that switches to communication mode and group frequently, the carrier control chip is connected, memory, local interface, receiving and dispatching state indicating module, the carrier control chip enlargies the back with output signal through signal output amplifier circuit, transmits in getting into low pressure power line channel through the signal coupled circuit, and the signal coupled circuit will be followed the signal of receiving and alternatied in the low pressure power line channel, export the signal output treatment circuit behind receipt filter circuit elimination high frequency interference, export the carrier control chip at last. The utility model discloses arrive a plurality of kinds of analog front end that traditional carrier communication module used together with the modem logical combination, realize through the carrier control chip for whole product is small, with low costs, the hardware resource high -usage, only need just can satisfy interior dynamic adjustment communication mode and the demand of communication with frequency point in a big way by less hardware analog front end.
Description
Technical field
The utility model relates to low-voltage powerline carrier communication field, particularly relates to a kind of for the Power Line Carrier Communication Module in low-voltage power automatic meter reading system.
Background technology
Low voltage power line carrier (PowerLineCarrier, PLC) communication is a kind of specific communication mode of carrying out transfer of data using low-voltage distribution wire (380V/220V) power line as information transmitting medium.
External each major company releases PLC modem chip one after another, wherein mainly contains the chip of American I ntellon company, DS2 company of Spain, but is all not suitable for China's actual conditions, becomes, strongly disturbing communication environment when being not suitable for domestic low-voltage network.
The subject matter that China's low pressure automatic meter reading system faces comprises the following aspects:
1. communication terminal has a large capacity and a wide range
Low pressure carrier wave automatic meter reading system is very complicated communication system.Communication unit (platform change scope) has hundreds of even thousands of terminals, and more has several ten thousand even hundreds of thousands terminal in a system.Particularly after carrier electric energy meter application, add the quantity of communication terminal, totally unfavorable to the reliability service of system.
2. continuous print signals collecting and data transmission
The work of electric energy meter is continuous print, requires system 24 hours acquisition pulse signal incessantly, substantially increases the requirement of system rejection to disturbance.
3. line environment is severe, and signal attenuation is serious
Current China does not force standard to the pollution of limiting electrical appliance equipment to electrical network, causes low voltage electric network seriously contaminated.Each the line load become, branch node, line range are also not quite similar.
4. data source anti-interference is poor, and Electro Magnetic Compatibility differs greatly
The basic data of system is from electric energy meter, and the product quality variance of different manufacturers is comparatively large, causes electromagnetic compatibility not pass a test, poor anti jamming capability.
Therefore, although power line carrier communication obtains in power consumer low pressure automatic meter reading system (power user power consumption information acquisition system) at home applies comparatively widely.But because the low voltage electric network complex structure of domestic resident, disturbance type are various, and Shi Bian great, regular poor, thus very large impact is caused on the performance of power line carrier communication, become problem demanding prompt solution.
At present both at home and abroad carrier chip manufacturer have employed the technology such as spread spectrum communication and attempts to solve the problem, but because communication environment is severe, fails the factors such as the problem of grasping the key link, and can not tackle the problem at its root.
The feature of domestic low voltage electric network environment is that complex structure, interference strength are large and changeable; The stationary applications mode of monotechnics or several technology cannot tackle this complex environment.
In addition, traditional carrier module, when needs dynamic conditioning communication mode and communication frequency, need several AFE (analog front end) and modulation /demodulation logical groups to be combined together, volume is large, cost is high, hardware and software resource utilization is low.
Summary of the invention
The technical problems to be solved in the utility model is to provide that a kind of volume is little, cost is low, use the carrier communication module of less hardware simulation front end.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of carrier communication module, comprise the carrier Control chip that can switch communication mode and frequency group, described carrier Control chip connects power supply, memory, local interface, reiving/transmitting state indicating module; Carrier Control chip will output signal after signal output amplifier amplifies, entered in low voltage power line communication channel by signal coupling circuit and transmit, the signal received from low voltage power line communication channel converts by signal coupling circuit, eliminate after High-frequency Interference through wave reception filtering circuit and output to signal output processing circuit, finally output to carrier Control chip.
Described carrier communication module is deployed in concentrator or intelligent electric meter or collector.
The several AFE (analog front end) that convention carrier communication module uses by the utility model and modulation /demodulation logical groups are combined together, realized by a carrier Control chip, make that whole small product size is little, cost is low, hardware resource utilization is high, only need less hardware simulation front end just can meet the demand of dynamic conditioning communication mode and communication frequency in a big way, have broad application prospects.
Accompanying drawing explanation
Fig. 1 is power amplifier and the coupling circuit of carrier communication module of the present utility model.
Fig. 2 is the wave reception filtering circuit of carrier communication module of the present utility model.
Fig. 3 is the Signal reception treatment circuit of carrier communication module of the present utility model.
Fig. 4 is the structured flowchart of carrier communication module of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The utility model provides a kind of carrier communication module, its hardware configuration as shown in Figure 4, comprise the carrier Control chip that can switch communication mode and frequency group, the model adopted is SSRCW1408, carrier Control chip connects power supply, memory, local interface, reiving/transmitting state indicating module, and the model that wherein memory adopts is W25Q16DVSNIG; Carrier Control chip will output signal after signal output amplifier amplifies, entered in low voltage power line communication channel by signal coupling circuit and transmit, the signal received from low voltage power line communication channel converts by signal coupling circuit, eliminate after High-frequency Interference through wave reception filtering circuit and output to signal output processing circuit, finally output to carrier Control chip; Signal output amplifier and signal coupling circuit form power amplifier and coupling circuit, as shown in Figure 1, realize being coupled of the amplification of output signal and signal and the 220V alternating current line of force; Wave reception filtering circuit and Signal reception treatment circuit achieve filtering and the back-end processing of Received signal strength, and as shown in Figure 2, Signal reception treatment circuit as shown in Figure 3 for wave reception filtering circuit.Each functional circuit specifically describes as follows:
Power amplifier and coupling circuit, be made up of signal output amplifier and signal coupling circuit; Modulated carrier signal is carried out amplifying and the carrier signal after amplifying is coupled on electrical network by this circuit.See Fig. 1, SigTxEn for launching enable control, when launching carrier wave, making NPN type triode Q6 and PNP type triode Q2 conducting, connecting amplifier power supply VHH, making during reception carrier to turn off during NPN type triode Q6 and PNP type triode Q2, disconnect amplifier power supply VHH.SigTx is the carrier signal after modulation, completes the power amplification of carrier signal, be coupled on electrical network by electric capacity C23, transformer T1, T2, electric capacity C21 through NPN type triode Q5, PNP type triode Q4 and NPN type triode Q3.The model that NPN type triode Q3 adopts is the model that 2SD669A, PNP type triode Q4 adopt is 2SB649A.
Wave reception filtering circuit, mainly completes carrier signal and receives limit filtration function.See Fig. 2, through the carrier signal SigRx that electrical network coupling is come in, pin SigIn1 incoming carrier Signal reception treatment circuit, through resistance R3 current limliting, after diode D1, D2 double limiting, after electric capacity C3 is coupled, is passed through after being adjusted by resistance R1, R5 level in a road; Another road carrier signal SigRx1 after electric capacity C6 is coupled, passes through pin SigIn2 incoming carrier Signal reception treatment circuit after being adjusted by resistance R7, R11 level after resistance R7, R11 voltage division processing.
Signal reception treatment circuit, mainly completes and is converted to digital signal incoming carrier chip interface circuit by receiving the carrier wave analog signal come from wave reception filtering circuit by comparator.Participate in Fig. 3, SigIn1 output digit signals SigVal1 after comparator U1 transforms, and enter carrier chip interface circuit; SigIn2 is output digit signals SigVal2 after comparator U1 transforms, and enters carrier chip interface circuit.
Carrier chip, traditional several AFE (analog front end) and modulation /demodulation logical groups being combined together, is the core of hardware components, and the hardware and software logic wherein run also is the core of whole module.Carrier chip carries management control logic and relay networking logic, and achieves the mutual conversion of signal, data, packet.Carrier chip can based on the combination of the combination of several working ways and multiple frequency group, and can in running self adaptation Dynamic Selection or above-mentioned frequency group and communication mode are manually set, the on-the-spot changeable interference environment of real adaptation, " evading " is disturbed, and realizes communication that is reliable, higher rate.
Carrier chip sheet carries following control logic, realizes the switching to communication mode and frequency group:
When the host node of carrier communication module as power line carrier communication ad-hoc network, initiate data interaction affairs to from node, carry out route learning and networking process.
When carrier communication module as power line carrier communication ad-hoc network from node time, carry out data interaction affairs with host node, carry out route learning and networking process, from node logically comprise edge from node, for command frame or response frame are amplified and the relaying of relay forwarding from node, relaying is that non-targeted is from node from node an interacting transaction, from node by resolving the Relay field value of the command frame of host node transmission, determine in a network by host node to logical place residing from node direction of transfer, then by resolve receive judge whether self is that edge is from node from other from the Relay field value the response frame of node, if in repeatedly interacting transaction, relaying from the Relay field value the response frame that node receives be comparatively fractional value time, relaying is defined as edge from node from node, or from node frequently as the Relay field value the destination node of command frame, seldom relay forwarding command frame and response frame, the response frame that receives be all comparatively fractional value time, be describedly also defined as edge from node from node, when there is local communication obstacle in network, the relaying at edge, local communication barrier becomes edge from node from node, described edge comprises the left bank node being in unimpeded network and the right bank node being in local communication barrier from node, after the node number of retransmissions field value judging to come in the command frame that autonomous node sends in described left bank reaches maximum preset value, active accommodation switches communication mode with frequency group with applicable current com-munication environment, and initiate relay forwarding affairs to right bank node, simultaneously in right bank node and communication barrier district, local from node by from the communication mode all preset and frequently group carry out relay forwarding, eliminate local communication obstacle, after the network local communication barrier is eliminated, left bank node and right bank node revert to relaying from node.
Carrier communication module is deployed in the device for power line carrier communications such as concentrator, intelligent electric meter or collector.In power line carrier communication ad-hoc network, host node is deployed in concentrator, from node deployment in intelligent electric meter or collector.
Above-mentioned is only for clearly example being described about embodiment of the present utility model, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range that the utility model creates.
Claims (2)
1. a carrier communication module, is characterized in that: comprise the carrier Control chip that can switch communication mode and frequency group, described carrier Control chip connects power supply, memory, local interface, reiving/transmitting state indicating module; Carrier Control chip will output signal after signal output amplifier amplifies, entered in low voltage power line communication channel by signal coupling circuit and transmit, the signal received from low voltage power line communication channel converts by signal coupling circuit, eliminate after High-frequency Interference through wave reception filtering circuit and output to signal output processing circuit, finally output to carrier Control chip.
2. carrier communication module according to claim 1, is characterized in that: be deployed in concentrator or intelligent electric meter or collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520471790.1U CN204836167U (en) | 2015-07-03 | 2015-07-03 | Carrier communication module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520471790.1U CN204836167U (en) | 2015-07-03 | 2015-07-03 | Carrier communication module |
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| CN204836167U true CN204836167U (en) | 2015-12-02 |
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| CN201520471790.1U Expired - Fee Related CN204836167U (en) | 2015-07-03 | 2015-07-03 | Carrier communication module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740234A (en) * | 2020-07-07 | 2020-10-02 | 中国科学院空天信息创新研究院 | Antenna structure |
| CN112910507A (en) * | 2021-02-26 | 2021-06-04 | 北京中宸微电子有限公司 | Power line carrier communication equipment and communication system |
-
2015
- 2015-07-03 CN CN201520471790.1U patent/CN204836167U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740234A (en) * | 2020-07-07 | 2020-10-02 | 中国科学院空天信息创新研究院 | Antenna structure |
| CN111740234B (en) * | 2020-07-07 | 2021-07-09 | 中国科学院空天信息创新研究院 | Antenna structure |
| CN112910507A (en) * | 2021-02-26 | 2021-06-04 | 北京中宸微电子有限公司 | Power line carrier communication equipment and communication system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hua Mengyang Inventor after: Fu Changshun Inventor after: Du Jianping Inventor after: Shang Weiguo Inventor after: Lang Jinwen Inventor after: Yang Bing Inventor before: Song Jidong Inventor before: Song Xiangdong |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170821 Address after: 450001 No. 18, Chun Ying Street, hi tech Industrial Development Zone, Henan, Zhengzhou Patentee after: NEWCAPEC ELECTRONICS Co.,Ltd. Address before: 450000 No. 12, building 48, 4 Wenhua Road, Jinshui District, Henan, Zhengzhou Co-patentee before: Song Xiangdong Patentee before: Song Jidong |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |