CN205610634U - Power line wide band multicarrier communication device - Google Patents
Power line wide band multicarrier communication device Download PDFInfo
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- CN205610634U CN205610634U CN201620155093.XU CN201620155093U CN205610634U CN 205610634 U CN205610634 U CN 205610634U CN 201620155093 U CN201620155093 U CN 201620155093U CN 205610634 U CN205610634 U CN 205610634U
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Abstract
The utility model discloses a power line wide band multicarrier communication device, including power module, main chip, detection module, storage module, signal amplification module, BPF module, interconnected circuit with to the external tapping, main chip include processing module and modem module, processing module is responsible for carrying on entire system's communication data's host processing ware, carries out the both way junction in modem module, storage module with to the external tapping respectively, detection module and communication module are connected, modem module is connected with signal amplification module and BFP module and is connected with interconnected circuit then, and interconnected circuit is direct to be connected with the power line, intelligent ammeter or concentrator to the external tapping is main with external are connected. The device occupies the frequency band width, and data transmission rate is high, and data capacity is big, and bidirectional need not to lay in addition communication line, simple to operate, can be convenient extend to low pressure customer side with powerline network, realize the data acquisition and control to the supply meter.
Description
Technical field
This utility model relates to intelligent grid communication technology, particularly to electrically-based live width band carrier communication apparatus in a kind of electricity consumption acquisition system, for improving efficiency and the robustness of power information acquisition system.
Background technology
In recent years, the propelling built along with State Grid Corporation of China's intelligent grid, power information acquisition system is just at gradual perfection.Existing intelligent electric energy meter Automatic meter reading system, mostly takes 485 wirings, arrowband low-frequency electrical line of force carrier wave or communication from electric energy meter, harvester to concentrator.Said process relates to the sharpest edges of PLC technology be to utilize existing, perfect, throughout electric lines of force widely, put into and the engineering time such that it is able to be greatly saved communication engineering, access network can be made to extend to rapidly have the place of electric lines of force.But, electric lines of force is different from common tie line, its original intention is to carry out electric energy transmission, rather than the transmission of data, for data communication, its channel is undesirable, is a highly unstable transmission channel, and this is embodied in that noise jamming is serious, time variation is big and the shortcoming such as signal attenuation is serious.
Utility model content
For solving above-mentioned defect of the prior art, this utility model provides a kind of power wire broadband carrier communication device, compared with existing common arrowband PLC technology, broadband power ZAP occupied bandwidth, message transmission rate is high, data capacity is big, transmitted in both directions, it is not necessary to additionally lay communication line, easy for installation, can easily powerline network be extended to low-voltage customer side, realize the data acquisition and control to electric supply meter, be the main bearing technology of intelligent grid in the future.
nullFor solving above-mentioned technical problem，This utility model scheme includes: a kind of power wire broadband carrier communication device，Including power module、Master chip、Detection module、Memory module、Signal amplification module、BPF module、Coupling circuit and external interface，Described master chip includes processing module and modulation /demodulation module，Described power module provides supply of electric power for whole device，Described processing module respectively with detection module、Memory module、Modulation /demodulation module electrically connects，The input of signal amplification module connects modulation /demodulation module，The outfan of signal amplification module connects coupling circuit input end，The input of BPF module connects demodulation module processed，The outfan of BPF module connects coupling circuit input end，The outfan of coupling circuit connects electric lines of force，One end of external interface connects the I/O interface of processing module，The other end of external interface connects electric energy meter or concentrator.
Further, described master chip uses Hi3911C chip.
Further, described power module output 3.3V DC voltage.
Further, described memory module uses Flash chip.
Further, described detection module includes zero cross detection circuit and over-current detection circuit.
The beneficial effects of the utility model are:
1, this utility model is by different external message switching interfaces and formal Specification, can not only be applied to list, three-phase intelligent electric-energy meter and concentrator use as bandwidth carrier communication module, it is also possible to carry out data acquisition as independent collecting device and communicate.
2, comparing low pressure narrowband carrier communication, bandwidth carrier communication occupied bandwidth, disturb less on electric lines of force, communication reliability is higher, and stability and safety are more preferable, and data capacity is big, bi-directional full-duplex high-speed traffic.By the test of this scheme is applied, result shows that communication distance is up to about 2km in the case of communication environment is good, Data Physical layer communication peak rate can reach 14Mbit/s, the bit error rate reaches 10-9 level, embodies good interference free performance and anti-multipath fade performance, operating frequency range 2～12MHz in power line carrier communication, quiescent dissipation≤250mW, dynamic power consumption≤1.35W, average power consumption≤280mW, can meet the demand of modern power information acquisition system completely.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, of the present utility model being embodied as is illustrated, it will be appreciated that enforcement example described herein is merely to illustrate and explains this utility model, be not used to limit this utility model.
nullA kind of power wire broadband carrier communication device as shown in Figure 1，Including power module、Master chip、Detection module、Memory module、Signal amplification module、BPF module、Coupling circuit and external interface，Described master chip includes processing module and modulation /demodulation module，Described power module provides supply of electric power for whole device，Described processing module respectively with detection module、Memory module、Modulation /demodulation module electrically connects，The input of signal amplification module connects modulation /demodulation module，The outfan of signal amplification module connects coupling circuit input end，The input of BPF module connects demodulation module processed，The outfan of BPF module connects coupling circuit input end，The outfan of coupling circuit connects electric lines of force，One end of external interface connects the I/O interface of processing module，The other end of external interface connects electric energy meter or concentrator.
The parameter request of the effect of modules is:
Power module: completed the conversion of 12V to 3.3V running voltage by DCDC circuit, inputs pressure more than 30V, more than 600mA fan-out capability；Selecting wire wound power inductance, inductance value 10 μ H, conveyance capacity is more than 600mA.
Memory module is by the complete paired data of flash new product and the storage of parameter, and supporting pieces selects SFC_CSN.Write-protect pin SFC_WPN connects 10k Ω resistive pull-downs, it is ensured that Flash content in a non-operating condition is not written over.
BPF module: chip internal has variable high-pass filter, therefore need to connect 100pF electric capacity and chip internal of input forms high pass.Increasing Out-of-band rejection, circuit needs the BPF (Band PassFilter) of external 2M～9M simultaneously；Wherein 2M HPF (High Pass Filter) is 5 rank, and 9M LPF (Low Pass Filter) is 3 rank.
Signal amplification module: the differential signal of master chip output, through differential amplification, is input to coupling coil and is transmitted.LineDriver driving chip requires frequency response bound cut-off frequency more than difference pin output bandwidth, and electric current output is more than 450mA.Pin is protected: add two-diode clamp protection circuit at chip pin outfan.
Detection module includes zero passage detection module and over-current detection module, acting as of zero passage detection module: in order to reach more preferable laser propagation effect, send when chip sometimes needs to select, i.e. selecting the relatively small point of making an uproar of the end on electric lines of force sine wave to carry out carrier wave transmission.Therefore chip needs electric lines of force sine wave is carried out sampling site, and when sinusoidal wave peak value, optocoupler conducting, is input to chip common GPIO pin after amplification, by computation delay, selects to carry out carrier wave transmission at trailing edge or rising edge (now disturbing minimum).Acting as of over-current detection module: during communication module sends data, power supply is carried out over-current detection, prevents electric current excessive, the big I of current limliting regulates according to string resistance.Reduced by interrupt notification CPU and launch power.
Coupling the acting as of circuit: after strong power part is by high-tension connector to module, uses safety electric capacity and the coupling coil of 4.7nF, filters 220V civil power, it would be desirable to 1MHz～12MHz signal be transferred in circuit board
External interface requires to be defined according to client's formal Specification with contact pin form.
Processing module and modulation /demodulation module are encapsulated in inside master chip, use Huawei's Hi3911V100 chip.
The operation principle of this device and process be:
When this plant running, power module it is powered to processing module in whole unit, especially master chip；Frame data or frame ordering are transferred to processing module by external interface part by external intelligent electric energy meter or concentrator, the signal received is carried out processing module dissection process the data that will send or order carries out digital-to-analogue conversion and becomes analogue signal, is sent to modulation /demodulation module；Modulation /demodulation module has packaged OFDM modulating-coding algorithm, modulating on 1536 carrier waves of 2-12MHz frequency bandwidth with OFDM, signal is filtered and utilizes coupling circuit will to be transmitted in signal loading to electric lines of force after adaptive power processing and amplifying by the AFE (analog front end) through signal amplification module；Relative, extract modulating 1536 carrier signals of 2-12MHz frequency bandwidth with OFDM on electric lines of force from power line communications interface during reception, signal sends after overcoupling circuit transmission to BPF module is filtered processing and is demodulated processing to modulation /demodulation module, and be sent to processing module and carry out resolving and analog digital conversion, it is reduced to original directive or data and returns to external intelligent electric energy meter or concentrator by external interface.For important parameter and data, this example can utilize certain storage rule to be loaded in memory module, and the running simultaneously for master chip processing module is monitored by detection module, it is ensured that the transmission quality of the properly functioning and signal of system.
Comparing low pressure narrowband carrier communication, bandwidth carrier communication occupied bandwidth, disturb less on electric lines of force, communication reliability is higher, and stability and safety are more preferable, and data capacity is big, bi-directional full-duplex high-speed traffic.By the test of this scheme is applied, result shows that communication distance is up to about 2km in the case of communication environment is good, Data Physical layer communication peak rate can reach 14Mbit/s, the bit error rate reaches 10-9 level, embodies good interference free performance and anti-multipath fade performance, operating frequency range 2～12MHz in power line carrier communication, quiescent dissipation≤250mW, dynamic power consumption≤1.35W, average power consumption≤280mW, can meet the demand of modern power information acquisition system completely.
Should be understood that; the above-mentioned description for preferred embodiment is the most detailed; therefore the restriction to this utility model scope of patent protection can not be considered; those of ordinary skill in the art is under enlightenment of the present utility model; in the case of without departing from this utility model scope of the claimed protection; can also make the various deformation such as replacement, simple combination, within these each fall within protection domain of the present utility model, the scope that is claimed of the present utility model should be as the criterion with claims.
Claims (5)
- null1. a power wire broadband carrier communication device，It is characterized in that，Including power module、Master chip、Detection module、Memory module、Signal amplification module、BPF module、Coupling circuit and external interface，Described master chip includes processing module and modulation /demodulation module，Described power module provides supply of electric power for whole device，Described processing module respectively with detection module、Memory module、Modulation /demodulation module electrically connects，The input of signal amplification module connects modulation /demodulation module，The outfan of signal amplification module connects coupling circuit input end，The input of BPF module connects demodulation module processed，The outfan of BPF module connects coupling circuit input end，The outfan of coupling circuit connects electric lines of force，One end of external interface connects the I/O interface of processing module，The other end of external interface connects electric energy meter or concentrator.
- A kind of power wire broadband carrier communication device the most according to claim 1, it is characterised in that described master chip uses Hi3911C chip.
- A kind of power wire broadband carrier communication device the most according to claim 1, it is characterised in that described power module output 3.3V DC voltage.
- A kind of power wire broadband carrier communication device the most according to claim 1, it is characterised in that described memory module uses Flash chip.
- A kind of power wire broadband carrier communication device the most according to claim 1, it is characterised in that described detection module includes zero cross detection circuit and over-current detection circuit.
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| CN201620155093.XU CN205610634U (en) | 2016-02-29 | 2016-02-29 | Power line wide band multicarrier communication device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703802A (en) * | 2016-02-29 | 2016-06-22 | 中电装备山东电子有限公司 | Power line broadband carrier communication device |
| CN107393284A (en) * | 2017-09-01 | 2017-11-24 | 哈尔滨电工仪表研究所 | A kind of electric energy meter communicator |
| CN107590986A (en) * | 2017-09-27 | 2018-01-16 | 广东电网有限责任公司应急抢修中心 | A kind of electric power data acquisition system based on bandwidth carrier |
| CN108662789A (en) * | 2017-03-31 | 2018-10-16 | 芜湖美的厨卫电器制造有限公司 | Water heater and its control system and controller |
| CN108662788A (en) * | 2017-03-31 | 2018-10-16 | 芜湖美的厨卫电器制造有限公司 | Water heater and its communication system |
| CN113452414A (en) * | 2021-07-01 | 2021-09-28 | 深圳市中鑫本科技发展有限公司 | Power line carrier near field communication method of power equipment detection device |
-
2016
- 2016-02-29 CN CN201620155093.XU patent/CN205610634U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703802A (en) * | 2016-02-29 | 2016-06-22 | 中电装备山东电子有限公司 | Power line broadband carrier communication device |
| CN108662789A (en) * | 2017-03-31 | 2018-10-16 | 芜湖美的厨卫电器制造有限公司 | Water heater and its control system and controller |
| CN108662788A (en) * | 2017-03-31 | 2018-10-16 | 芜湖美的厨卫电器制造有限公司 | Water heater and its communication system |
| CN108662788B (en) * | 2017-03-31 | 2023-11-24 | 芜湖美的厨卫电器制造有限公司 | Water heater and communication system thereof |
| CN107393284A (en) * | 2017-09-01 | 2017-11-24 | 哈尔滨电工仪表研究所 | A kind of electric energy meter communicator |
| CN107590986A (en) * | 2017-09-27 | 2018-01-16 | 广东电网有限责任公司应急抢修中心 | A kind of electric power data acquisition system based on bandwidth carrier |
| CN113452414A (en) * | 2021-07-01 | 2021-09-28 | 深圳市中鑫本科技发展有限公司 | Power line carrier near field communication method of power equipment detection device |
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