CN206629064U - A kind of device for power line carrier communications - Google Patents
A kind of device for power line carrier communications Download PDFInfo
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- CN206629064U CN206629064U CN201720391057.8U CN201720391057U CN206629064U CN 206629064 U CN206629064 U CN 206629064U CN 201720391057 U CN201720391057 U CN 201720391057U CN 206629064 U CN206629064 U CN 206629064U
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- circuit
- line carrier
- power line
- modem chip
- carrier communications
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Abstract
The utility model discloses a kind of device for power line carrier communications, the device includes modem chip, the transmitting power amplifying circuit that is connected with above-mentioned modem chip, the amplifying circuit that accepts filter being connected with above-mentioned modem chip, the signal coupling circuit being connected with above-mentioned transmitting power amplifying circuit and the above-mentioned amplifying circuit that accepts filter, be connected with above-mentioned modem chip and be used to verifying reception signal whether distortion microcontroller and the zero cross detection circuit that is connected with above-mentioned modem chip.By the microcontroller with verifying function, reception signal is verified, judge its in transmitting procedure whether distortion so that the fidelity factor of signal is higher.And zero passage detection is carried out using zero cross detection circuit, further improve the fidelity factor of signal.It can be seen that the application is advantageous to improve the envelope eapsulotomy rate of device for power line carrier communications.
Description
Technical field
Carrier communication field is the utility model is related to, more particularly to a kind of device for power line carrier communications.
Background technology
At present, due to the influence factor of loading condition complexity, input impedance, noise etc. on low-voltage power line so that low pressure
The popularization of power-line carrier communication is larger by being limited.
Voltage power-line carrier communication technology referred to by the use of power line as signal channel, realize it is one-to-one, one
To more or multi-to-multi the communication technology.Carried out data transmission using low-voltage power line, it is not necessary to rewiring, and coverage
Extensively, it can economize on resources, also make it that signal will not be influenceed by building walls.Low voltage power line carrier technology extensively should
With that can produce larger economic benefit, for example, for power supply department kilowatt meter reading-out system, low voltage power line carrier technology can carry
High operational reliability.In addition, voltage power-line carrier communication technology can also be applied in visible light communication technology, more specifically
Ground, it can apply to the LED indoor positioned light source network system of intelligent terminal auxiliary.
Voltage power-line carrier communication technology is typically embodied by device for power line carrier communications, and existing power line carries
Wave communication device, due to surge unstable in power network or other influences factor, easily causes signal biography in transmitting procedure
Defeated exception, ultimately results in distorted signals.Based on the above situation, how to improve the envelope eapsulotomy rate of device for power line carrier communications is
This area urgent problem to be solved.
Utility model content
The purpose of this utility model is to provide a kind of device for power line carrier communications, it is therefore intended that solves electric in the prior art
The problem of envelope eapsulotomy rate of powerline carrier communication device is relatively low.
In order to solve the above technical problems, the utility model provides a kind of device for power line carrier communications, the device includes：
Modem chip, the transmitting power amplifying circuit being connected with the modem chip and the modulation /demodulation
It is the connected amplifying circuit that accepts filter of chip, homogeneous with the transmitting power amplifying circuit and the amplifying circuit that accepts filter
Signal coupling circuit even, be connected with the modem chip and be used to verifying reception signal whether the microcontroller of distortion with
And the zero cross detection circuit being connected with the modem chip.
Alternatively, the zero cross detection circuit includes the optic coupling element for producing zero cross signal, the first electric capacity, the one or two
Pole pipe, first resistor and second resistance；
Wherein, described first electric capacity one end is connected with the optic coupling element, other end ground connection；Described first resistor one end with
The optic coupling element is connected, other end ground connection；The first end of first diode and the second end with the optic coupling element
It is connected；Second end of the described second resistance one end respectively with the optic coupling element and first diode is connected.
Alternatively, the amplifying circuit that accepts filter includes being used for the operational amplifier for amplifying the reception signal.
Alternatively, the electric power line carrier chip in the modem chip is specially HLPLCS521F chips, wherein, institute
Stating HLPLCS521F chips has multichannel short dot, the short dot is carried out into independent assortment, to select the power line carrier to lead to
The sending mode of T unit, traffic rate and whether verify.
Alternatively, in addition to the modem chip indicator light circuit being connected, for according to the modulation /demodulation
The working condition of chip, show different indicator lamps.
Alternatively, in addition to the modem chip current foldback circuit being connected, the current foldback circuit bag
The second electric capacity is included, described second electric capacity one end is connected with power supply, other end ground connection.
Alternatively, in addition to one end is connected with power supply, the other end and the microcontroller and the modem chip
Connected power supply stabilization circuit, for providing burning voltage for the microcontroller and the modem chip.
A kind of device for power line carrier communications provided by the utility model, the device include modem chip, with it is above-mentioned
The connected transmitting power amplifying circuit of modem chip, the amplifying circuit that accepts filter being connected with above-mentioned modem chip,
The signal coupling circuit being connected with above-mentioned transmitting power amplifying circuit and the above-mentioned amplifying circuit that accepts filter and above-mentioned modulation
Demodulation chip be connected and for verify reception signal whether distortion microcontroller and be connected with above-mentioned modem chip
Zero cross detection circuit.By the microcontroller with verifying function, reception signal is verified, judges it in transmitting procedure
Whether distortion so that the fidelity factor of signal is higher.And zero passage detection is carried out using zero cross detection circuit, further improve signal
Fidelity factor.It can be seen that the application is advantageous to improve the envelope eapsulotomy rate of device for power line carrier communications.
Brief description of the drawings
For clearer explanation the utility model embodiment or the technical scheme of prior art, below will to embodiment or
The required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
Some embodiments of the utility model, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
The structural schematic block diagram for the device for power line carrier communications that Fig. 1 is provided by the utility model embodiment；
The modem chip schematic diagram for including HLPLCS521F chips that Fig. 2 is provided by the utility model embodiment；
A kind of circuit of the embodiment for the transmitting power amplifying circuit that Fig. 3 is provided by the utility model embodiment
Figure；
A kind of circuit diagram of the embodiment for the signal coupling circuit that Fig. 4 is provided by the utility model embodiment；
A kind of circuit of the embodiment for the amplifying circuit that accepts filter that Fig. 5 is provided by the utility model embodiment
Figure；
A kind of circuit diagram of the embodiment for the zero cross detection circuit that Fig. 6 is provided by the utility model embodiment；
Fig. 7 is a kind of circuit diagram of embodiment of indicator light circuit provided by the utility model；
A kind of circuit diagram of the embodiment for the current foldback circuit that Fig. 8 is provided by the utility model embodiment；
A kind of circuit diagram of the embodiment for the power supply stabilization circuit that Fig. 9 is provided by the utility model embodiment.
Embodiment
In order that those skilled in the art more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.Obviously, described embodiment is only the utility model part
Embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not doing
Go out under the premise of creative work the every other embodiment obtained, belong to the scope of the utility model protection.
Refer to Fig. 1, the structural representation frame for the device for power line carrier communications that Fig. 1 is provided by the utility model embodiment
Figure, the device can include：
Modem chip 11, the transmitting power amplifying circuit 12 being connected with above-mentioned modem chip and above-mentioned modulation
The connected amplifying circuit 13 that accepts filter of demodulation chip and above-mentioned transmitting power amplifying circuit and the above-mentioned amplification electricity that accepts filter
The connected signal coupling circuit 14 in road, be connected with above-mentioned modem chip and for verify reception signal whether distortion it is micro-
Controller 15 and the zero cross detection circuit 16 being connected with above-mentioned modem chip.
It should be noted that above-mentioned modem chip includes modem chip and some necessary circuits, it is led
Play modulation /demodulation, you can be modulated with the signal to required transmission, the signal received is demodulated.And modulatedemodulate
The modulation system of aligning piece can be shift keying modulation (FSK modulation), it is of course also possible to be other modulation systems.
Above-mentioned modem chip can be embodied in HLPLCS521F chips, can also be specially ST7538 chips,
It is of course also possible to for other chips with similar functions, it is not limited thereto.
Preferably, above-mentioned modem chip can be HLPLCS521F chips, and the structure of the chip may refer to Fig. 2,
The modem chip schematic diagram for including HLPLCS521F chips that Fig. 2 is provided by the utility model embodiment.Now, due to
The chip is provided with multichannel short dot, therefore can carry out independent assortment using by multichannel short dot, to select power line carrier to lead to
The sending mode of T unit, traffic rate and whether verify.Short dot is utilized, user can select to control power line carrier
Communicator is in zero passage sending mode or normal transmission mode, it is also an option that the serial ports of device for power line carrier communications leads to
Speed is interrogated, and carries out even parity check or no parity check.Meanwhile distortion can be reduced using the fuzzy algorithmic approach that the chip carries
Signal, to improve the fidelity factor of signal.
Usually, HLPLCS521F chips provide 4 pairs of short dots, and user can be by using different short dot settings pair
The low and high level of pin is answered, to reach the purpose of configuration.
For example, being configured using any two pairs of short dots therein, that is, the low and high level of two pins is set, reaches institute
The effect needed.It can represent that pin is in high level with 1, represent that pin is in low level with 0.Set using a pair of short dots
The serial ports of device for power line carrier communications is to use even parity check, or no parity check, and specifically, pin meets GND (i.e. 0) and represents serial ports
No parity check, meet VCC (i.e. 1) and then represent that serial ports uses even parity check.Another pair short dot is used to set sending mode, specifically, draw
Pin meets GND (i.e. 0) and represents that device for power line carrier communications uses zero passage sending mode, and meets VCC (i.e. 1) and then represent that power line carries
Wave communication device uses normal transmission mode.Serial communication speed is set using two pairs of short dots simultaneously, specifically, 00 can be used
It is that 1200,01 expression communication speed is that 2400,10 expression communication speeds are that 4800,11 expression communication speeds are to represent communication speed
9600。
Above-mentioned microcontroller be used for checking signal whether distortion, i.e., in microcontroller burning have checking algorithm, microcontroller
The signal received can be verified according to the checking algorithm, judge signal whether distortion.It can specifically show as
STC15W408 single-chip microcomputers, other types of microcontroller can also be shown as, is not limited thereto.
And checking algorithm is based primarily upon cyclic redundancy check (Cyclic Redundancy Check, CRC), it passes through
The transmission frame T that (n-k) redundancy bits position F forms n-bit is added after the k bit datas D for needing to transmit, i.e., in required transmission
Frame check sequence (Frame Check Sequence, FCS) is added after data D and forms transmission frame, then T is sent.The biography
The form of defeated frame is as follows：
Especially, CRC provides (n-k+1) bit integer P set in advance, and requires addition
(n-k) bit F meets：T mod P==0, T=2n-kD+F.Therefore sender and recipient can be before communicating, it is necessary to appoint
Default integer P.And sender can pass through T mod P==0, T=2 before signal is sentn-kD+F is determined and is filled F, is formed
Corresponding transmission frame.More specifically, F can be determined by the computing of mould two or binary coefficient multinomial.And recipient is connecing
After receiving signal, result=T mod P computings are carried out, during and if only if result=0, receive and think received just now
Signal does not have distortion.
In view of when data frame length is in the range of 8bits-128bits, CRC-8 can reduce opening for additional bit
Pin, and have better performance performance, therefore the design for the algorithm that can be tested based on CRC-8.
The detailed process of check algorithm based on CRC-8 can be as follows：Microcontroller sends a data and gives transmitting terminal mould
Block, then microcontroller retransmit one and verify obtained 8 bit check codes to initiator block through CRC-8 by previous data,
Initiator block is successively sent previous data and 8 bit check codes by power line.
It is understood that because controller often sends a data, 8 bit check code corresponding to one will be calculated, and
When send data volume it is more when, then can show slightly cumbersome, therefore can first calculate check code corresponding to the data of all 8, and deposit
Storage is got up, and check code corresponding to data is directly invoked when so using.Now, the code realization approach of transmitting terminal can be with
For：It is determined that the multinomial I used；The array T [] of check code comprising corresponding polynomial all 8 data；Determine a hair
Send data A；Check code B corresponding to A is found out from array；Send data A；Send data B.
And for receiving terminal, receive end module and successively receive two data, receiving end module can be by the two
Data are sent to microcontroller.Microcontroller is to this data is calculated, if obtained by two data verify through CRC-8
Result be 0, you can the data for judging to receive do not have distortion.Now, the code realization approach of receiving terminal can be：Receive number
According to A；Receive data B；Data A and B are verified, calculate income value C；IF C==0, then it can determine whether the non-distortion of data；
Otherwise data distortion is judged.
It should be evident that the checking algorithm of microcontroller is not limited to checking algorithm mentioned above, can also be other classes
The checking algorithm of type, you can think that microcontroller increase verifying function each falls within the protection domain of the utility model embodiment.
As can be seen that pass through above-mentioned checking algorithm so that microcontroller can verify to received signal, sentence
It is disconnected whether distortion, to improve the fidelity factor of signal.
Above-mentioned transmitting power amplifying circuit is mainly used in transmit power being amplified, and specific circuit diagram may refer to figure
A kind of circuit diagram of embodiment of 3, Fig. 3 transmitting power amplifying circuits provided by the utility model embodiment.
As shown in figure 3, transmitting power amplifying circuit combines conduct using a P-channel Mos pipe and a N-channel Mos pipe
Amplify driving chip, wave filter is formed using L4 and C13.R14, R15 are Mos pipe overcurrent protection resistance, and D2 manages for P-channel Mos
Reverse protection diode.
Above-mentioned signal coupling circuit is mainly used in coupled signal, and its specific circuit diagram may refer to Fig. 4, and Fig. 4 is this reality
A kind of circuit diagram of embodiment of the signal coupling circuit provided with new embodiment.
As shown in figure 4, carrier signal coupling transformer uses 1mH：1mH, safety electric capacity C6 are 0.22uF/275V and L1 electricity
Feel 22uH, L1 and C6 composition LC frequency-selective networks.
The signal that the above-mentioned amplifying circuit that accepts filter is mainly used in receiving is filtered amplification, and it can utilize computing
Amplifier is amplified to signal.Specific circuit diagram may refer to Fig. 5, and Fig. 5 is connect by what the utility model embodiment provided
Receive a kind of circuit diagram of embodiment of filter amplification circuit.
As shown in figure 5, wave reception filtering circuit front end uses RLC Design of Bandpass, D3 is the compound of two diodes
Pipe, by two diode directions and attaches to GND clipping signal amplitudes, the amplification short circuit of protection rear end.Signal passes through bandpass filtering
Enter amplifier op37 after device to be amplified, sinusoidal low level signal amplification is shaped into square-wave signal parses to carrier chip.R12 is
Amplifier build-out resistor, C10 are coupled capacitor.R16, R18, C14 and R13 provide suitable biasing for amplifier input, R8 and
R10 may amplify the signal to cut-off and saturation, turn into square-wave signal and parsed to carrier signal to set amplifier multiplication factor.op37
Have a very high conversion ratio, 17V/u S conversion ratio, can perfect amplified signal and signal it is undistorted.
It should be noted that the existing amplifying circuit that accepts filter is usually to have what independent component was formed so that its
It is larger.And the amplifying circuit provided by the utility model that accepts filter utilizes integrated circuit so that its circuit scale is smaller, letter
Number stabilization and precision is higher.
Above-mentioned zero cross detection circuit is mainly used in zero passage detection, it is preferable that above-mentioned zero cross detection circuit includes being used to produce
The optic coupling element of zero cross signal, the first electric capacity, the first diode, first resistor and second resistance；Wherein, first electric capacity
One end is connected with the optic coupling element, other end ground connection；Described first resistor one end is connected with the optic coupling element, another termination
Ground；The first end of first diode and the second end are connected with the optic coupling element；Second resistance one end difference
It is connected with the second end of the optic coupling element and first diode.
Above-mentioned optic coupling element can be specially optocoupler P2501, or other similar optocouplers, be not limited thereto.
More specifically zero cross detection circuit figure may refer to Fig. 6, and the zero passage that Fig. 6 is provided by the utility model embodiment is examined
A kind of circuit diagram of embodiment of slowdown monitoring circuit.
As shown in fig. 6,220V AC signals driving optocoupler P2501 produces zero cross signal, and chip zero passage detection is rising
Edge and trailing edge are effective.
It should be noted that form zero cross detection circuit using optic coupling element, compared to existing zero cross detection circuit,
Its component is simple, and circuit scale is smaller.
Further, device for power line carrier communications can also include the indicator lamp being connected with above-mentioned modem chip
Circuit, for the working condition according to the modem chip, show different indicator lamps.I.e. using indicator lamp light on and off with
And color, to distinguish the working condition of device for power line carrier communications.For example, can using the LED of two different colours come
Represent different working conditions, i.e., it is simultaneously bright using two LEDs, represent that electricity is normal on device for power line carrier communications；Utilize
Some LED is bright, represents that device for power line carrier communications sends data；It is bright using another LED, represent power line
Carrier communication apparatus receives data.Specific circuit diagram may refer to Fig. 7, and Fig. 7 is instruction provided by the utility model
A kind of circuit diagram of embodiment of circuit for lamp.
It is understood that the color for the LED for passing through flicker is to judge the work shape of device for power line carrier communications
State, and can be by observing upper electric when whether two lamps simultaneously bright judges whether upper electricity is normal.
Preferably, device for power line carrier communications can also include the overcurrent protection electricity being connected with above-mentioned modem chip
Road, above-mentioned current foldback circuit include the second electric capacity, and described second electric capacity one end is connected with power supply, other end ground connection.
It should be evident that transient current when data are sent due to device for power line carrier communications is larger, above-mentioned second electricity
Appearance can refer to the larger electric capacity of electric capacity, to play a protective role.And more specifically circuit diagram may refer to Fig. 8, Fig. 8 is this reality
A kind of circuit diagram of embodiment of the current foldback circuit provided with new embodiment.
Preferably, device for power line carrier communications can also be connected including one end with power supply, the other end and above-mentioned microcontroller
Device and the connected power supply stabilization circuit of above-mentioned modem chip, for for above-mentioned microcontroller and above-mentioned modulation /demodulation
Chip provides burning voltage.
The VPLC photovoltaic conversions of input can be stable voltage by power supply stabilization circuit, while be alternatively microcontroller and carried
For stable voltage, make its normal work.The physical circuit of power supply stabilization circuit may refer to Fig. 9, and Fig. 9 is that the utility model is real
Apply a kind of circuit diagram of the embodiment for the power supply stabilization circuit that example is provided.
It should be noted that device for power line carrier communications can neither incoming transport power line, also do not access direct current
Source line.At this point it is possible to the directly docking of the carrier communication mouth (i.e. L/N) of device for power line carrier communications can be subjected to data biography
It is defeated, therefore the device can directly substitute 485 and 232 grade communication modes.Meanwhile power line carrier provided by the utility model
The carrier communication mouth of communicator is connected to the circuit of the devices such as safety electric capacity composition, can directly resist electrostatic, burst of pulses and surge
Impact.
Device for power line carrier communications mentioned above can be applied particularly in LED indoor positioned light source network system.
Its detailed process can be as follows：Transmitting terminal by need to send containing specific information coding (i.e. with " target machine label " and
The coding of " the modified order numbering that should be performed afterwards of the target " the two information), and be calculated by checking algorithm
CRC code, sent by device for power line carrier communications to low-voltage power line.Receiving terminal is by checking algorithm to receiving
Signal is verified, and meaning can be explained to first signal (i.e. the coding with specific information) if non-distortion, now,
Selected target machine (sequence that a kind of basis was originally set enters the LED of line flicker, and the flashing sequence carries positional information)
Just start to be changed according to the order numbering (i.e. flashing sequence) performed required by coding, so as to the target machine flashing sequence
Change, positional information is also just changed.Operated more than, the flashing sequence that can enter to be about to arbitrary target machine changes
To think the flashing sequence of setting, so as to change the positional information of machine, realize to merge in the visible ray room of an intelligence and determine
Position system.Certainly, above-mentioned device for power line carrier communications can also be applied particularly to other application scenarios, not limit herein
It is fixed.
The utility model embodiment provide device for power line carrier communications, the device include modem chip, with it is upper
The amplification electricity that accepts filter for state the connected transmitting power amplifying circuit of modem chip, being connected with above-mentioned modem chip
Road, the signal coupling circuit being connected with above-mentioned transmitting power amplifying circuit and the above-mentioned amplifying circuit that accepts filter, with it is above-mentioned
Modem chip be connected and for verify reception signal whether distortion microcontroller and with above-mentioned modem chip phase
Zero cross detection circuit even.By the microcontroller with verifying function, reception signal is verified, judges that it is being transmitted across
In journey whether distortion so that the fidelity factor of signal is higher.And zero passage detection is carried out using zero cross detection circuit, further improve letter
Number fidelity factor.As can be seen that the device is advantageous to improve the envelope eapsulotomy rate of device for power line carrier communications.
A kind of device for power line carrier communications provided by the utility model is described in detail above.Herein should
Principle of the present utility model and embodiment are set forth with specific case, the explanation of above example is only intended to help
Assistant solves method and its core concept of the present utility model.It should be pointed out that for those skilled in the art,
On the premise of the utility model principle is not departed from, some improvement and modification, these improvement can also be carried out to the utility model
Also fallen into modification in the protection domain of the utility model claims.
Claims (7)
- A kind of 1. device for power line carrier communications, it is characterised in that including modem chip, with the modem chip phase Transmitting power amplifying circuit even, the amplifying circuit that accepts filter being connected with the modem chip and the transmit power Amplifying circuit and the connected signal coupling circuit of amplifying circuit that accepts filter, be connected with the modem chip and For verify reception signal whether distortion microcontroller and the zero cross detection circuit that is connected with the modem chip.
- 2. device for power line carrier communications as claimed in claim 1, it is characterised in that the zero cross detection circuit includes being used for Produce optic coupling element, the first electric capacity, the first diode, first resistor and the second resistance of zero cross signal；Wherein, described first electric capacity one end is connected with the optic coupling element, other end ground connection；Described first resistor one end with it is described Optic coupling element is connected, other end ground connection；The first end of first diode and the second end are connected with the optic coupling element； Second end of the described second resistance one end respectively with the optic coupling element and first diode is connected.
- 3. device for power line carrier communications as claimed in claim 1, it is characterised in that the amplifying circuit that accepts filter includes For amplifying the operational amplifier of the reception signal.
- 4. device for power line carrier communications as claimed in claim 1, it is characterised in that the electric power in the modem chip Line carrier chip is specially HLPLCS521F chips, wherein, the HLPLCS521F chips have multichannel short dot, by the short circuit Point carries out independent assortment, to select the sending mode of the device for power line carrier communications, traffic rate and whether verify.
- 5. device for power line carrier communications as claimed in claim 1, it is characterised in that also include and the modem chip Connected indicator light circuit, for the working condition according to the modem chip, show different indicator lamps.
- 6. the device for power line carrier communications as described in any one of claim 1 to 5, it is characterised in that also include and the tune The connected current foldback circuit of demodulation chip processed, the current foldback circuit include the second electric capacity, described second electric capacity one end and Power supply is connected, other end ground connection.
- 7. device for power line carrier communications as claimed in claim 1, it is characterised in that be also connected including one end with power supply, separately The power supply stabilization circuit that one end is connected with the microcontroller and the modem chip, for for the microcontroller And the modem chip provides burning voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720391057.8U CN206629064U (en) | 2017-04-14 | 2017-04-14 | A kind of device for power line carrier communications |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720391057.8U CN206629064U (en) | 2017-04-14 | 2017-04-14 | A kind of device for power line carrier communications |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733469A (en) * | 2017-11-17 | 2018-02-23 | 联桥科技有限公司 | A kind of power wire broadband carrier communication anti-jamming circuit |
| CN110365368A (en) * | 2019-08-29 | 2019-10-22 | 广东工业大学 | A kind of power line carrier communication control method and system |
| CN112367100A (en) * | 2020-09-30 | 2021-02-12 | 北京机电工程研究所 | Power line carrier communication control circuit based on Ethernet and serial interface |
| CN112965418A (en) * | 2021-02-07 | 2021-06-15 | 深圳市联控智能科技有限公司 | Data transmission device and method, control equipment and control system |
-
2017
- 2017-04-14 CN CN201720391057.8U patent/CN206629064U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733469A (en) * | 2017-11-17 | 2018-02-23 | 联桥科技有限公司 | A kind of power wire broadband carrier communication anti-jamming circuit |
| CN107733469B (en) * | 2017-11-17 | 2023-10-20 | 联桥科技有限公司 | Anti-interference circuit for power line broadband carrier communication |
| CN110365368A (en) * | 2019-08-29 | 2019-10-22 | 广东工业大学 | A kind of power line carrier communication control method and system |
| CN112367100A (en) * | 2020-09-30 | 2021-02-12 | 北京机电工程研究所 | Power line carrier communication control circuit based on Ethernet and serial interface |
| CN112965418A (en) * | 2021-02-07 | 2021-06-15 | 深圳市联控智能科技有限公司 | Data transmission device and method, control equipment and control system |
| CN112965418B (en) * | 2021-02-07 | 2022-06-07 | 深圳市联控智能科技有限公司 | Data transmission device and method, control equipment and control system |
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Granted publication date: 20171110 Termination date: 20190414 |