CN203301475U - Carrier communication unit - Google Patents
Carrier communication unit Download PDFInfo
- Publication number
- CN203301475U CN203301475U CN2013200669897U CN201320066989U CN203301475U CN 203301475 U CN203301475 U CN 203301475U CN 2013200669897 U CN2013200669897 U CN 2013200669897U CN 201320066989 U CN201320066989 U CN 201320066989U CN 203301475 U CN203301475 U CN 203301475U
- Authority
- CN
- China
- Prior art keywords
- resistance
- electric capacity
- switching tube
- diode
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model is suitable for the field of communications, and provides a carrier communication unit. The carrier communication unit comprises a zero-cross detection circuit, a signal transmitting circuit and a signal coupling circuit which are sequentially connected, and a signal receiving filtering circuit and a zero-cross synchronous circuit which are sequentially connected, wherein an input end of the zero-cross detection circuit and an output end of the zero-cross synchronous circuit are both connected with carrier waves, and an input output control end of the signal coupling circuit is connected with an electric power line. The carrier communication unit performs data spread spectrum transmission by using orthogonal codes, obtains 3.3 mS differential period synchronous transmission when using the electric power line for zero-crossing time sharing, realizes reliable data exchange between electronic terminal devices based on an electric power line communication network, has communication relay capability, is stable in carrier wave sampling, and can automatically realize network functions such as carrier wave node monitoring and active reporting. The carrier communication unit performs communication by using the zero-crossing synchronization technology in a period with high impedance, stable impedance and low interference signals of the alternating-current zero-cross point, is long in communication distance and has high time varying stability.
Description
Technical field
The utility model belongs to the communications field, relates in particular to a kind of carrier communication unit.
Background technology
According to the present domestic carrier meter reading market demand, in conjunction with the carrier communication system that is specifically applied to the power line communication medium of electrical network feature development.For power industry or other public utility department provide the Automatic meter reading system solution.In prior art, the carrier wave sampling is unstable.
The utility model content
The purpose of this utility model is to provide a kind of carrier communication unit, is intended to solve the unsettled problem of existing carrier wave sampling.
The utility model is achieved in that a kind of carrier communication unit, comprises the zero cross detection circuit, signal sending circuit and the signal coupling circuit that connect successively, and the signal wave reception filtering circuit and the zero passage synchronous circuit that connect successively; The input of described zero cross detection circuit be connected the output of zero passage synchronous circuit and all connect carrier wave, the input and output control end of described signal coupling circuit connects power line.
Further, described zero cross detection circuit comprises: the first switching tube, the first resistance, the second resistance, the 3rd resistance, the first electric capacity and the first diode; The control end of the first switching tube is connected to zero line by described the 3rd resistance, and the first end of described the first switching tube is connected to power supply by the first resistance, the second end ground connection of the first switching tube; The negative electrode of the first diode is connected to the control end of described the first switching tube, the plus earth of the first diode; One end of the first electric capacity is connected to the first end of the first switching tube, the other end ground connection of the first electric capacity; One end of the second resistance is connected to the first end of the first switching tube, and the other end of the second resistance is as the output of described zero cross detection circuit.
Further, described the first switching tube is the first metal-oxide-semiconductor, the grid of described the first metal-oxide-semiconductor is as the control end of described the first switching tube, and the drain electrode of described the first metal-oxide-semiconductor is as the first end of described the first switching tube, and the source electrode of described the first metal-oxide-semiconductor is as the second end of described the first switching tube.
Further, described signal sending circuit comprises: the second diode, the 3rd diode, second switch pipe, the 3rd switching tube, the 4th resistance, the 5th resistance, the 6th resistance, the second electric capacity, the 3rd electric capacity and the first transformer; The negative electrode of the second diode is as the input of signal sending circuit, the plus earth of the second diode; The first end of second switch pipe is connected to the negative electrode of described the second diode, the second end ground connection of second switch pipe, and the control end of second switch pipe is connected to an end of the former limit winding of the first transformer by the 4th resistance; The other end ground connection of the former limit winding of the first transformer, an end of the secondary winding of the first transformer is connected to the control end of the 3rd switching tube by the 5th resistance, the other end ground connection of the secondary winding of the first transformer; The first end of the 3rd switching tube is connected to the negative electrode of described the 3rd diode, the second end ground connection of the 3rd switching tube; The negative electrode of the 3rd diode is as the input of signal sending circuit, the plus earth of the 3rd diode; The 6th resistance, the second electric capacity and the 3rd electric capacity are connected in series between the output and ground of signal sending circuit successively, and the end that is connected in series of the second electric capacity and the 3rd electric capacity is connected with an end of the secondary winding of the first transformer.
Further, described second switch pipe is the first triode, the base stage of the first triode is as the control end of described second switch pipe, and the collector electrode of the first triode is as the first end of described second switch pipe, and the emitter of the first triode is as the second end of described second switch pipe.
Further, described signal coupling circuit comprises: the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the first inductance, twin zener dioder and the second transformer; Described the second transformer comprises former limit winding, the first secondary winding and the second secondary winding; One end of the 4th electric capacity is connected to zero line, and the other end of the 4th electric capacity is connected to live wire; One end of the 5th electric capacity is connected to zero line, and the other end of the 5th electric capacity is connected to an end of the former limit winding of the second transformer by the first inductance, and the other end of the former limit winding of the second transformer is connected to live wire; One end of twin zener dioder is connected to the other end of the 5th electric capacity, and the other end of twin zener dioder is connected to live wire; One end of the first secondary winding of the second transformer is connected to the other end of the first secondary winding by the 6th electric capacity, the mid point of the first secondary winding is connected to the 12V power supply, one end of the second secondary winding of the second transformer is as the input and output control end of signal coupling circuit, the other end ground connection of the second secondary winding; One end of the 7th electric capacity is connected to described 12V power supply, the other end ground connection of the 7th electric capacity.
Further, described signal wave reception filtering circuit comprises: the second inductance, the 7th resistance, the 8th electric capacity, the 9th electric capacity, the 3rd inductance, the 8th resistance and the 4th diode; The negative electrode of the 4th diode is connected to the input of signal wave reception filtering circuit, the plus earth of the 4th diode by the 8th electric capacity, the 7th resistance and the second inductance that is connected in series successively; One end of the 9th electric capacity is connected to the negative electrode of described the 4th diode, the other end ground connection of the 9th electric capacity; One end of the 3rd inductance is connected to the negative electrode of described the 4th diode, the other end ground connection of the 3rd inductance; One end of the 8th resistance is connected to the negative electrode of described the 4th diode, the other end ground connection of the 8th resistance.
Further, described zero passage synchronous circuit comprises: the 9th resistance, the tenth resistance, the 11 resistance, the tenth electric capacity, the 5th diode and the 4th switching tube; The control end of the 4th switching tube is connected to power supply by the tenth resistance and the 9th resistance that is connected in series successively, and the first end of the 4th switching tube is connected to power supply by the 11 resistance, and the first end of the 4th switching tube is also as the output of zero passage synchronous circuit; The second end ground connection of the 4th switching tube; The end that is connected in series of the tenth resistance and the 9th resistance passes through the tenth capacity earth; The negative electrode of the 5th diode is connected to the control end of the 4th switching tube, the plus earth of the 5th diode.
The carrier communication unit by using orthogonal code that the utility model provides is carried out the data spread spectrum transmission, uses the timesharing of power line zero passage to obtain the transmission of 3.3mS differential period synchronization; Realized possessing the communication repeating ability based on reliable exchanges data between the electric terminal equipment of power line communication network, the carrier wave sampling is stable; Can automatically realize the network functions such as the carrier wave node is intercepted, active reporting.And utilize the zero passage simultaneous techniques, communicate by zero-crossing of alternating current high impedance, impedance stabilization, period that interference signal is low, communication distance is far away, the time to become stability high.
Description of drawings
Fig. 1 is the modular structure schematic diagram of the carrier communication unit that provides of the utility model;
Fig. 2 is the physical circuit figure of zero cross detection circuit in the carrier communication unit that provides of the utility model;
Fig. 3 is the physical circuit figure of signal sending circuit in the carrier communication unit that provides of the utility model;
Fig. 4 is the physical circuit figure of signal coupling circuit in the carrier communication unit that provides of the utility model;
Fig. 5 is the physical circuit figure of signal wave reception filtering circuit in the carrier communication unit that provides of the utility model;
Fig. 6 is the physical circuit figure of zero passage synchronous circuit in the carrier communication unit that provides of the utility model.
Embodiment
, in order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The carrier communication unit that the utility model provides is mainly used in intelligent grid sector application field; Fig. 1 shows the structure of the carrier communication unit that the utility model provides, and for convenience of explanation, only shows the part relevant to the utility model.
The carrier communication unit comprises zero cross detection circuit 1, signal sending circuit 2 and the signal coupling circuit 3 that connects successively, and the signal wave reception filtering circuit 4 and the zero passage synchronous circuit 5 that connect successively; Wherein the input of zero cross detection circuit 1 output of with the zero passage synchronous circuit, being connected all connects carrier wave, and the input and output control end of signal coupling circuit 3 connects power line.
In the utility model, carrier wave, by the 1 judgement sampling time of zero cross detection circuit, sends the signal of needs transmission and via signal coupling circuit 3, be coupled on power line and transmit by signal sending circuit 2; The information of transmitting on power line also is sent to signal wave reception filtering circuit 4 and the rear bi-directional that realizes information of zero passage synchronous circuit 5 via signal coupling circuit 3; And the carrier wave sampling is stable.
The carrier communication unit by using orthogonal code that the utility model provides is carried out the data spread spectrum transmission, uses the timesharing of power line zero passage to obtain the transmission of 3.3mS differential period synchronization; Realized possessing the communication repeating ability based on reliable exchanges data between the electric terminal equipment of power line communication network, can automatically realize the network functions such as the carrier wave node is intercepted, active reporting.And utilize the zero passage simultaneous techniques, communicate by zero-crossing of alternating current high impedance, impedance stabilization, period that interference signal is low, communication distance is far away, the time to become stability high.
As shown in Figure 2, zero cross detection circuit 1 comprises the first switching tube Q102, the first resistance R 120, the second resistance R 143, the 3rd resistance R 119, the first capacitor C 120 and the first diode D103; The control end of the first switching tube Q102 is connected to zero line N by the 3rd resistance R 119, and the first end of the first switching tube Q102 is connected to power supply VCC by the first resistance R 120, the second end ground connection of the first switching tube Q102; The negative electrode of the first diode D103 is connected to the control end of the first switching tube Q102, the plus earth of the first diode D103; One end of the first capacitor C 120 is connected to the first end of the first switching tube Q102, the other end ground connection of the first capacitor C 120; One end of the second resistance R 143 is connected to the first end of the first switching tube Q102, and the other end of the second resistance R 143 is connected to the output TZA of zero cross detection circuit 1.
In the utility model, the first switching tube Q102 can have for metal-oxide-semiconductor, triode etc. the element of switching function; When the first switching tube Q102 was the first metal-oxide-semiconductor, the grid of the first metal-oxide-semiconductor was as the control end of the first switching tube Q102, and the drain electrode of the first metal-oxide-semiconductor is as the first end of the first switching tube Q102, and the source electrode of the first metal-oxide-semiconductor is as the second end of the first switching tube Q102.
As shown in Figure 3, signal sending circuit 2 comprises: the second diode D101, the 3rd diode D102, second switch pipe Q100, the 3rd switching tube Q101, the 4th resistance R 122, the 5th resistance R 123, the 6th resistance R 121, the second capacitor C 118, the 3rd capacitor C 119 and the first transformer; The negative electrode of the second diode D101 is connected to the input TXA of signal sending circuit 2, the plus earth of the second diode D101; The first end of second switch pipe Q100 is connected to the input TXA of signal sending circuit 2, the second end ground connection of second switch pipe Q100, and the control end of second switch pipe Q100 is connected to an end of the former limit winding of the first transformer by the 4th resistance R 122; The other end ground connection of the former limit winding of the first transformer, an end of the secondary winding of the first transformer are connected to the control end of the 3rd switching tube Q101, the other end ground connection of the secondary winding of the first transformer by the 5th resistance R 123; The first end of the 3rd switching tube Q101 is connected to the input TXB of signal sending circuit 2, the second end ground connection of the 3rd switching tube Q101; The negative electrode of the 3rd diode D102 is connected to the input TXB of signal sending circuit 2, the plus earth of the 3rd diode D102; The 6th resistance R 121, the second capacitor C 118 and the 3rd capacitor C 119 are connected in series between the output SSCAOUT and ground of signal sending circuit 2 successively, the 6th resistance R 121 and the second capacitor C 118 be connected in series end as the output OUT0 of signal sending circuit 2, the end that is connected in series of the second capacitor C 118 and the 3rd capacitor C 119 is connected with an end of the secondary winding of the first transformer.
In the utility model, second switch pipe Q100 and the 3rd switching tube Q101 all can have for triode, metal-oxide-semiconductor etc. the element of switching function.When second switch pipe Q100 is the first triode, the base stage of the first triode is as the control end of second switch pipe Q100, the collector electrode of the first triode is as the first end of second switch pipe Q100, and the emitter of the first triode is as the second end of second switch pipe Q100.
As shown in Figure 4, signal coupling circuit 3 comprises: the 4th capacitor C 125, the 5th capacitor C 101, the 6th capacitor C 103, the 7th capacitor C 105, the first inductance L 101, twin zener dioder TVS100 and the second transformer T100; Wherein the second transformer T100 comprises former limit winding, the first secondary winding and the second secondary winding; One end of the 4th capacitor C 125 is connected to zero line N, and the other end of the 4th capacitor C 125 is connected to live wire L; One end of the 5th capacitor C 101 is connected to zero line N, and the other end of the 5th capacitor C 101 is connected to an end of the former limit winding of the second transformer T100 by the first inductance L 101, and the other end of the former limit winding of the second transformer T100 is connected to live wire L; The end of twin zener dioder TVS100 is connected to the other end of the 5th capacitor C 101, and the other end of twin zener dioder TVS100 is connected to live wire L; One end of the first secondary winding of the second transformer T100 is connected to the other end of the first secondary winding by the 6th capacitor C 103, the mid point of the first secondary winding is connected to the 12V power supply, one end of the second secondary winding of the second transformer T100 is connected to RTX, the other end ground connection of the second secondary winding; One end of the 7th capacitor C 105 is connected to the 12V power supply, the other end ground connection of the 7th capacitor C 105.
As shown in Figure 5, signal wave reception filtering circuit 4 comprises the second inductance L 3, the 7th resistance R 23, the 8th capacitor C 18, the 9th capacitor C 14, the 3rd inductance L 1, the 8th resistance R 20 and the 4th diode VD1; Wherein the negative electrode of the 4th diode VD1 is connected to the input ARTX of signal wave reception filtering circuit 4, the plus earth of the 4th diode VD1 by the 8th capacitor C 18, the 7th resistance R 23 and the second inductance L 3 that is connected in series successively; One end of the 9th capacitor C 14 is connected to the negative electrode of the 4th diode VD1, the other end ground connection of the 9th capacitor C 14; One end of the 3rd inductance L 1 is connected to the negative electrode of the 4th diode VD1, the other end ground connection of the 3rd inductance L 1; One end of the 8th resistance R 20 is connected to the negative electrode of the 4th diode VD1, the other end ground connection of the 8th resistance R 20.
As shown in Figure 6, zero passage synchronous circuit 5 comprises: the 9th resistance R 1, the tenth resistance R 2, the 11 resistance R 3, the tenth capacitor C 1, the 5th diode D1 and the 4th switching tube Q1; Wherein the control end of the 4th switching tube Q1 is connected to power supply VCC1 by the tenth resistance R 2 and the 9th resistance R 1 that is connected in series successively, the first end of the 4th switching tube Q1 is connected to power supply VCC2 by the 11 resistance R 3, and the first end of the 4th switching tube Q1 is also as the output SPASZR of zero passage synchronous circuit 5; The second end ground connection of the 4th switching tube Q1; The end that is connected in series of the tenth resistance R 2 and the 9th resistance R 1 passes through the tenth capacitor C 1 ground connection; The negative electrode of the 5th diode D1 is connected to the control end of the 4th switching tube Q1, the plus earth of the 5th diode D1.
In the utility model, the 4th switching tube Q1 can be triode, and the base stage of triode is as the control end of the 4th switching tube Q1, and the collector electrode of triode is as the first end of the 4th switching tube Q1, and the emitter of triode is as the second end of the 4th switching tube Q1.
The carrier communication unit that adopts the utility model to provide carries out carrier communication, while working in the 50Hz mains frequency, often communicates speed and supports 1200/600/100/50bps, three-phase 3x1200,3x600,3x100,3x50bps; While working in the 60Hz mains frequency, often communicate speed and support 1200/600/120/60bps, three-phase 3x1200,3x600,3x100,3x50bps.
The utility model, owing to having utilized longer spreading code, has improved communication capacity and communication stability greatly, has utilized some more professional algorithms, and transmission speed does not have again too large reduction.In time, electric network noise is the most weak at the 3.3ms of zero passage, disturbs minimumly on the net, and the impedance consistency is strong, has greatly improved stability and the reliability of communication.Low voltage electric network at home, improving carrier frequency is to improve the highly effective method of communication capacity, transmission frequency is that 421.1KHz can have fairly obvious help to improving communication capacity.
The power line carrier meter reading system that the carrier communication unit that employing the utility model provides is realized is divided into three grades from structure, the system main website; Being comprised of a series of Master Station Software and computer, is the main control unit of carrier system; Major function comprises data acquisition, data processing and the functions such as storage, data display.Carrier integrated controller; The carrier wave host node, gather the data of each carrier wave from node, and process storage, and energy and master station computer or handheld unit carry out the equipment of exchanges data simultaneously, is called for short concentrator.Carrier wave is from node; The carrier wave node at (acquisition channel module) stoichiometric point place.As carrier electric energy meter, 485 ammeters, water meter, gas meter, carrier wave home gateway, carrier wave household electrical appliance etc.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (8)
1. a carrier communication unit, is characterized in that, comprises the zero cross detection circuit, signal sending circuit and the signal coupling circuit that connect successively, and the signal wave reception filtering circuit and the zero passage synchronous circuit that connect successively; The input of described zero cross detection circuit be connected the output of zero passage synchronous circuit and all connect carrier wave, the input and output control end of described signal coupling circuit connects power line.
2. carrier communication as claimed in claim 1 unit, is characterized in that, described zero cross detection circuit comprises: the first switching tube, the first resistance, the second resistance, the 3rd resistance, the first electric capacity and the first diode;
The control end of the first switching tube is connected to zero line by described the 3rd resistance, and the first end of described the first switching tube is connected to power supply by the first resistance, the second end ground connection of the first switching tube; The negative electrode of the first diode is connected to the control end of described the first switching tube, the plus earth of the first diode; One end of the first electric capacity is connected to the first end of the first switching tube, the other end ground connection of the first electric capacity; One end of the second resistance is connected to the first end of the first switching tube, and the other end of the second resistance is as the output of described zero cross detection circuit.
3. carrier communication as claimed in claim 2 unit, it is characterized in that, described the first switching tube is the first metal-oxide-semiconductor, the grid of described the first metal-oxide-semiconductor is as the control end of described the first switching tube, the drain electrode of described the first metal-oxide-semiconductor is as the first end of described the first switching tube, and the source electrode of described the first metal-oxide-semiconductor is as the second end of described the first switching tube.
4. carrier communication as claimed in claim 1 unit, it is characterized in that, described signal sending circuit comprises: the second diode, the 3rd diode, second switch pipe, the 3rd switching tube, the 4th resistance, the 5th resistance, the 6th resistance, the second electric capacity, the 3rd electric capacity and the first transformer;
The negative electrode of the second diode is as the input of signal sending circuit, the plus earth of the second diode; The first end of second switch pipe is connected to the negative electrode of described the second diode, the second end ground connection of second switch pipe, and the control end of second switch pipe is connected to an end of the former limit winding of the first transformer by the 4th resistance; The other end ground connection of the former limit winding of the first transformer, an end of the secondary winding of the first transformer is connected to the control end of the 3rd switching tube by the 5th resistance, the other end ground connection of the secondary winding of the first transformer; The first end of the 3rd switching tube is connected to the negative electrode of described the 3rd diode, the second end ground connection of the 3rd switching tube; The negative electrode of the 3rd diode is as the input of signal sending circuit, the plus earth of the 3rd diode; The 6th resistance, the second electric capacity and the 3rd electric capacity are connected in series between the output and ground of signal sending circuit successively, and the end that is connected in series of the second electric capacity and the 3rd electric capacity is connected with an end of the secondary winding of the first transformer.
5. carrier communication as claimed in claim 4 unit, it is characterized in that, described second switch pipe is the first triode, the base stage of the first triode is as the control end of described second switch pipe, the collector electrode of the first triode is as the first end of described second switch pipe, and the emitter of the first triode is as the second end of described second switch pipe.
6. carrier communication as claimed in claim 1 unit, is characterized in that, described signal coupling circuit comprises: the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the first inductance, twin zener dioder and the second transformer; Described the second transformer comprises former limit winding, the first secondary winding and the second secondary winding;
One end of the 4th electric capacity is connected to zero line, and the other end of the 4th electric capacity is connected to live wire; One end of the 5th electric capacity is connected to zero line, and the other end of the 5th electric capacity is connected to an end of the former limit winding of the second transformer by the first inductance, and the other end of the former limit winding of the second transformer is connected to live wire; One end of twin zener dioder is connected to the other end of the 5th electric capacity, and the other end of twin zener dioder is connected to live wire; One end of the first secondary winding of the second transformer is connected to the other end of the first secondary winding by the 6th electric capacity, the mid point of the first secondary winding is connected to the 12V power supply, one end of the second secondary winding of the second transformer is as the input and output control end of signal coupling circuit, the other end ground connection of the second secondary winding; One end of the 7th electric capacity is connected to described 12V power supply, the other end ground connection of the 7th electric capacity.
7. carrier communication as claimed in claim 1 unit, is characterized in that, described signal wave reception filtering circuit comprises: the second inductance, the 7th resistance, the 8th electric capacity, the 9th electric capacity, the 3rd inductance, the 8th resistance and the 4th diode;
The negative electrode of the 4th diode is connected to the input of signal wave reception filtering circuit, the plus earth of the 4th diode by the 8th electric capacity, the 7th resistance and the second inductance that is connected in series successively; One end of the 9th electric capacity is connected to the negative electrode of described the 4th diode, the other end ground connection of the 9th electric capacity; One end of the 3rd inductance is connected to the negative electrode of described the 4th diode, the other end ground connection of the 3rd inductance; One end of the 8th resistance is connected to the negative electrode of described the 4th diode, the other end ground connection of the 8th resistance.
8. carrier communication as claimed in claim 1 unit, is characterized in that, described zero passage synchronous circuit comprises: the 9th resistance, the tenth resistance, the 11 resistance, the tenth electric capacity, the 5th diode and the 4th switching tube;
The control end of the 4th switching tube is connected to power supply by the tenth resistance and the 9th resistance that is connected in series successively, and the first end of the 4th switching tube is connected to power supply by the 11 resistance, and the first end of the 4th switching tube is also as the output of zero passage synchronous circuit; The second end ground connection of the 4th switching tube; The end that is connected in series of the tenth resistance and the 9th resistance passes through the tenth capacity earth; The negative electrode of the 5th diode is connected to the control end of the 4th switching tube, the plus earth of the 5th diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200669897U CN203301475U (en) | 2013-02-04 | 2013-02-04 | Carrier communication unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200669897U CN203301475U (en) | 2013-02-04 | 2013-02-04 | Carrier communication unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203301475U true CN203301475U (en) | 2013-11-20 |
Family
ID=49577454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200669897U Expired - Lifetime CN203301475U (en) | 2013-02-04 | 2013-02-04 | Carrier communication unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203301475U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531146A (en) * | 2019-09-02 | 2019-12-03 | 北京智芯微电子科技有限公司 | Zero crossing detection device, method and the computer storage medium of Three Phase Carrier Based communication module |
| CN110726901A (en) * | 2019-10-28 | 2020-01-24 | 深圳市国电科技通信有限公司 | Ranging method based on high-speed carrier zero-crossing synchronization and signal-to-noise ratio |
| CN113484698A (en) * | 2021-05-21 | 2021-10-08 | 国网浙江省电力有限公司湖州供电公司 | Partial discharge detection system based on environmental data feedback |
| CN114629232A (en) * | 2021-10-26 | 2022-06-14 | 杭州耐立电气有限公司 | Intelligent control system and method under strong current interference of high-voltage switch cabinet |
-
2013
- 2013-02-04 CN CN2013200669897U patent/CN203301475U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531146A (en) * | 2019-09-02 | 2019-12-03 | 北京智芯微电子科技有限公司 | Zero crossing detection device, method and the computer storage medium of Three Phase Carrier Based communication module |
| CN110531146B (en) * | 2019-09-02 | 2020-11-03 | 北京智芯微电子科技有限公司 | Zero-crossing detection device and method for three-phase carrier communication module and computer storage medium |
| CN110726901A (en) * | 2019-10-28 | 2020-01-24 | 深圳市国电科技通信有限公司 | Ranging method based on high-speed carrier zero-crossing synchronization and signal-to-noise ratio |
| CN110726901B (en) * | 2019-10-28 | 2022-01-07 | 深圳市国电科技通信有限公司 | Ranging method based on high-speed carrier zero-crossing synchronization and signal-to-noise ratio |
| CN113484698A (en) * | 2021-05-21 | 2021-10-08 | 国网浙江省电力有限公司湖州供电公司 | Partial discharge detection system based on environmental data feedback |
| CN114629232A (en) * | 2021-10-26 | 2022-06-14 | 杭州耐立电气有限公司 | Intelligent control system and method under strong current interference of high-voltage switch cabinet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5921578B2 (en) | Channel selection in power line communication | |
| CN103500496B (en) | Electric power data multi-way communication system and multi-way centralized meter reading system | |
| CN201623706U (en) | Low-voltage power line carrier communication module | |
| CN209250634U (en) | Platform area identifying system based on broadband power line carrier and power frequency communication | |
| Cavdar | Performance analysis of FSK power line communications systems over the time-varying channels: Measurements and modeling | |
| KR20160006160A (en) | A system and method for inferring schematic and topological properties of an electrical distribution grid | |
| CN205265685U (en) | Power line carrier communication device | |
| CN203301475U (en) | Carrier communication unit | |
| CN202172403U (en) | Low voltage power line carrier communication module | |
| CN105139629A (en) | Method for improving data acquisition efficiency of low voltage power line broadband carrier waves | |
| CN104597352A (en) | Power quality monitoring system | |
| CN105490722A (en) | General packet radio service (GPRS) network communication repeater | |
| CN105187096A (en) | Power line carrier signal coupling circuit | |
| CN106788607B (en) | Concentrator communication module based on power line broadband carrier | |
| CN204886948U (en) | Power line carrier signals interconnected circuit | |
| CN202331781U (en) | Wireless meter reading device based on WIA wireless network | |
| CN103150877A (en) | Wireless meter reading device based on WIA wireless network | |
| CN202794361U (en) | District automatic identification tester | |
| CN105322981A (en) | Dual-mode heterogeneous communication device | |
| CN203340068U (en) | Power line carrier wave communication system | |
| CN103337155A (en) | Multi-environment-adaptive all-weather dynamic-management low-voltage power line carrier remote centralized meter reading method | |
| CN103281094B (en) | Based on the plug and play module of hybrid modulation mode power carrier communication | |
| CN205015396U (en) | Smart electric meter based on spread spectrum communication | |
| CN202841552U (en) | Wireless signal forwarding device | |
| CN106685483B (en) | System for coupling power distribution station broadband power line carrier zero line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Lin Huanhuan Document name: Notification of Passing Examination on Formalities |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |