CN109450472A - A kind of switch actuator and signal receiving circuit - Google Patents
A kind of switch actuator and signal receiving circuit Download PDFInfo
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- CN109450472A CN109450472A CN201811532628.0A CN201811532628A CN109450472A CN 109450472 A CN109450472 A CN 109450472A CN 201811532628 A CN201811532628 A CN 201811532628A CN 109450472 A CN109450472 A CN 109450472A
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- 239000000284 extract Substances 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims description 26
- 230000001360 synchronised effect Effects 0.000 claims description 10
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
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- 238000010168 coupling process Methods 0.000 claims description 4
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- 238000004891 communication Methods 0.000 abstract description 18
- 230000035945 sensitivity Effects 0.000 abstract description 7
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- 238000005516 engineering process Methods 0.000 description 3
- 230000006855 networking Effects 0.000 description 3
- 238000004590 computer program Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1638—Special circuits to enhance selectivity of receivers not otherwise provided for
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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Abstract
The present invention provides a kind of switch actuator and signal receiving circuit, the switch actuator includes signal receiving circuit, the signal receiving circuit includes: the first filter unit of multiple parallel connections, for receiving input signal from low-voltage power line and filtering, wherein each first filter unit filters out the input signal of different frequency respectively；And the signal extraction unit of multiple parallel connections, for extracting transmission signal from the input signal, wherein each signal extraction unit extracts the transmission signal of different frequency respectively from the input signal filtered out.Switch actuator and signal receiving circuit of the invention uses multiband cogradient matrix formula and receives mode, improve the receiving sensitivity of low-voltage powerline carrier communication so that data transmission is reliable, will not lossing signal, and communication distance is obviously improved.
Description
Technical field
The present invention relates to field of signal processing, in particular to a kind of switch actuator and signal receiving circuit.
Background technique
With the development of society, switch actuator is usually used in building trade or automation industry, for by user or
The order that person's smart machine is sent, is converted into the open and-shut mode of relay, to control the on-off of loaded line, reaches change line
The purpose of line state.The switch actuator for the finished product that can be seen currently on the market generallys use wired (bus structures) or wireless
As data transfer path, and carry out data transmission theoretically being also feasible using narrow-band power line carrier.
Wherein, for the switch actuator using wired communication mode, no matter which kind of form (such as bus is its communication topology be
Type, star-like or Compound Topology), it is maximum the disadvantage is that be routed in target deployment environment.Such requirement is for those
In the architectural environment of operation, almost it is unable to satisfy.Even the building in completely new construction, used due to each building
Communication media is different, so that design early period and Engineering concordance have very big difficulty.
And for the switch actuator using communication, mainly have two o'clock insufficient: (1) wireless signal has
Diversity propagates the interference vulnerable to malicious interference source in the sky, and no matter how safe agreement itself is, is also not suitable for height
Concerning security matters unit uses, i.e., so-called non-physical isolation；(2) radio wave is a kind of electromagnetic wave, for metalliferous building penetration
Ability is limited, such as basement, underground pipe gallery etc., and the networking of multiple equipment is relatively difficult at this time.
For the switch actuator using narrow-band power line carrier, firstly, the data of transmission will guarantee correctly；Again
Person, under the same transformer, the communication distance between node wants that hundreds of meters to thousands of meters of range can be reached, and could cover in this way
Multiple buildings, such communication range just have the value of networking.And in low-voltage power line transmitting data be it is extremely difficult,
This is because the impedance of low voltage electric network is non-constant, change with the variation of load, and harmonic wave, surge on power grid etc. interferes
It is extremely more, so that extremely difficult using power line carrier networking in reality.
To solve the above-mentioned problems and other problems, it is necessary to propose that a kind of novel switch actuator and signal receive
Circuit, to solve existing technical problem.
Summary of the invention
A series of concept of reduced forms is introduced in Summary, this will in the detailed description section into
One step is described in detail.Summary of the invention is not meant to attempt to limit technical solution claimed
Key feature and essential features do not mean that the protection scope for attempting to determine technical solution claimed more.
In order to overcome the problems, such as that presently, there are according to an aspect of the present invention, provide a kind of switch actuator, including signal
Circuit is received, the signal receiving circuit includes: the first filter unit of multiple parallel connections, defeated for receiving by low-voltage power line
Enter signal and filter, wherein each first filter unit filters out the input signal of different frequency respectively；And it is multiple simultaneously
The signal extraction unit of connection, for from the input signal extract transmission signal, wherein each signal extraction unit from
The transmission signal of different frequency is extracted in the input signal filtered out respectively.
In one embodiment, each first filter unit is used to filter out the defeated of the different frequency at same time point
Enter signal.
In one embodiment, each first filter unit is also used to filter out the different frequency of different time points
The input signal, to form the matrix of the input signal.
In one embodiment, the signal receiving circuit further includes the signal holding unit of multiple parallel connections, is connected to
Between first filter unit and the signal extraction unit, for keeping the amplitude of the input signal filtered out.
In one embodiment, the signal holding unit includes automatic gain control amplifier.
In one embodiment, the switch actuator further includes processing unit, and the processing unit is connected to described
One filter unit, the band bandwidth filtered for controlling each of multiple described first filter units.
In one embodiment, the processing unit is additionally coupled to the signal extraction unit, for multiple biographies
Defeated signal is handled to generate output signal.
In one embodiment, the switch actuator further includes synchronous recognition unit, the synchronous recognition unit connection
Between the low-voltage power line and the processing unit, the synchronization signal in the input signal is synchronized for identification with determining
Point.
In one embodiment, first filter unit includes bandpass filter.
In one embodiment, the signal extraction unit includes demodulator.
In one embodiment, the switch actuator further includes signal sending circuit, and the signal sending circuit includes
Spectrum-spreading unit, signal coupling unit, the second filter unit and signal amplification unit.
According to another aspect of the present invention, a kind of signal receiving circuit is provided, the signal receiving circuit include: it is multiple simultaneously
First filter unit of connection, for receiving input signal by low-voltage power line and filtering, wherein each first filtering is single
Member filters out the input signal of different frequency respectively；And multiple signal extraction units, for being extracted from the input signal
Signal is transmitted, wherein each signal extraction unit extracts different frequency from the input signal filtered out respectively
Transmit signal.
In one embodiment, wherein each first filter unit is used to filter out the different frequency at same time point
Input signal.
In one embodiment, wherein further, each first filter unit is also used to filter out different time
The input signal of the different frequency of point, to form the matrix of the input signal.
In one embodiment, the signal receiving circuit further includes multiple signal holding units, is connected to described
Between one filter unit and the signal extraction unit, for keeping the amplitude of the input signal filtered out.
In one embodiment, the signal holding unit includes automatic gain control amplifier.
In one embodiment, first filter unit includes bandpass filter.
In one embodiment, the signal extraction unit includes demodulator.
Switch actuator and signal receiving circuit of the invention uses multiband cogradient matrix formula and receives mode, improve
The receiving sensitivity of low-voltage powerline carrier communication so that data transmission is reliable, will not lossing signal, and communication distance is aobvious
It writes and is promoted.
Detailed description of the invention
Following drawings of the invention is incorporated herein as part of the present invention for the purpose of understanding the present invention.Shown in the drawings of this hair
Bright embodiment and its description, principle used to explain the present invention.
In attached drawing:
Fig. 1 is the structural block diagram of switch actuator according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of switch actuator according to an embodiment of the invention；And
Fig. 3 is the sampling time of the sampled point of cogradient matrix reception technique and the relational graph of frequency.
Specific embodiment
In the following description, a large amount of concrete details are given so as to provide a more thorough understanding of the present invention.So
And it is obvious to the skilled person that the present invention may not need one or more of these details and be able to
Implement.In other examples, in order to avoid confusion with the present invention, for some technical characteristics well known in the art not into
Row description.
It should be understood that the present invention can be implemented in different forms, and should not be construed as being limited to propose here
Embodiment.On the contrary, provide these embodiments will make it is open thoroughly and completely, and will fully convey the scope of the invention to
Those skilled in the art.In the accompanying drawings, for clarity, the size and relative size in the area Ceng He may be exaggerated.From beginning to end
Same reference numerals indicate identical element.
It should be understood that when element or layer be referred to " ... on ", " with ... it is adjacent ", " being connected to " or " being coupled to " other members
When part or layer, can directly on other elements or layer, it is adjacent thereto, be connected or coupled to other elements or layer, or
There may be elements or layer between two parties.On the contrary, when element is referred to as " on directly existing ... ", " with ... direct neighbor ", " is directly connected to
To " or " being directly coupled to " other elements or when layer, then there is no elements or layer between two parties.Art can be used although should be understood that
Language first, second, third, etc. describes various component, assembly units, area, floor and/or part, these component, assembly units, area, floor and/or portion
Dividing should not be limited by these terms.These terms are used merely to distinguish a component, assembly unit, area, floor or part and another
Component, assembly unit, area, floor or part.Therefore, do not depart from present invention teach that under, first element discussed below, component, area,
Floor or part are represented by second element, component, area, floor or part.
Spatial relation term for example " ... under ", " ... below ", " below ", " ... under ", " ... on ",
" above " etc., herein can for convenience description and being used describe an elements or features shown in figure with it is other
The relationship of elements or features.It should be understood that other than orientation shown in figure, spatial relation term intention further include using with
The different orientation of device in operation.For example, then, being described as " below other elements " if the device in attached drawing is overturn
Or " under it " or " under it " elements or features will be oriented in other elements or features "upper".Therefore, exemplary term
" ... below " and " ... under " it may include upper and lower two orientations.Device, which can be additionally orientated, (to be rotated by 90 ° or other takes
To) and spatial description language as used herein correspondingly explained.
The purpose of term as used herein is only that description specific embodiment and not as limitation of the invention.Make herein
Used time, " one " of singular, "one" and " described/should " be also intended to include plural form, unless the context clearly indicates separately
Outer mode.It is also to be understood that term " composition " and/or " comprising ", when being used in this specification, determines the feature, whole
The presence of number, step, operations, elements, and/or components, but be not excluded for one or more other features, integer, step, operation,
The presence or addition of component, assembly unit and/or group.Herein in use, term "and/or" includes any of related listed item and institute
There is combination.
In order to thoroughly understand the present invention, detailed structure and step will be proposed in following description, to illustrate this
Invent the technical solution proposed.Presently preferred embodiments of the present invention is described in detail as follows, however other than these detailed descriptions, this hair
It is bright to have other embodiments.
To solve the above-mentioned problems, the present invention provides a kind of switch actuator, including signal receiving circuit, the signals
Receiving circuit includes:
First filter unit of multiple parallel connections, for receiving input signal by low-voltage power line and filtering, wherein each
First filter unit filters out the input signal of different frequency；And
The signal extraction unit of multiple parallel connections, for extracting transmission signal, wherein each signal extraction unit is from institute
State the transmission signal that different frequency is extracted in the input signal filtered out.
Switch actuator and signal receiving circuit of the invention uses multiband cogradient matrix formula and receives mode, improve
The receiving sensitivity of low-voltage powerline carrier communication so that data transmission is reliable, will not lossing signal, and communication distance is aobvious
It writes and is promoted.
Detailed description of the present invention switch actuator combined with specific embodiments below.
It is the structural block diagram of switch actuator 10 according to an embodiment of the invention referring first to Fig. 1, Fig. 1.Such as Fig. 1
Shown, switch actuator 10 may include signal receiving circuit 100, signal sending circuit 200 and processing unit 300.
Wherein, signal receiving circuit 100 be used for by low-voltage power line from signal generating apparatus receive input signal and from
It takes out transmission signal.Wherein, the signal generating apparatus can include but is not limited to stationary computers, mobile computer or
Their combination.Illustrative fixed computer may include desktop computer, work station, personal computer, thin-client, end
End, game machine, personal video recorder (PVR), set-top box etc. are such.Illustrative mobile computer may include notebook electricity
Brain, tablet computer, wearable computer, implantation calculating equipment, telecommunication apparatus, smart phone, automobile computer, personal digital assistant
(PDA), portable gaming device, media player, camera etc. are such.
Wherein, in the present invention, low-voltage power line can be power supply line used in resident's daily life building, also
It can be the industrial power supply line etc. of 380V.Illustratively, power supply line can be nonpolarity power supply line.
It can be seen that switch actuator of the invention only need to be by power transmission line original in building, without it
The transmission of the data between signal generating apparatus and signal receiving circuit 100 can be realized in his any equipment.Using original low pressure
Power line can save arrangement special signal transmission line.In addition, the method that joined nonpolarity power supply line, it can be further excellent
Change installation, so that construction is more convenient, quick.
It is the structural schematic diagram of switch actuator 10 according to an embodiment of the invention referring now to Fig. 2, Fig. 2.Tool
Body, signal receiving circuit 100 may include the first filter unit 110, signal holding unit 120 and signal extraction unit 130.Its
In, the first filter unit 110 is by low-voltage power line connection signal generating means, for receiving input letter by low-voltage power line
Number and filter.Since there are many interference signals in the signal of low-voltage power line transmission, in order to improve receiving sensitivity, protect
Illustratively cogradient matrix reception technique can be used to receive signal in card data transmission quality.In order to make it easy to understand, letter below
Singly introduce cogradient matrix reception technique.
It is the sampling time of the sampled point of cogradient matrix reception technique and the relational graph of frequency referring now to Fig. 3, Fig. 3.Such as
Shown in Fig. 3, wherein t0 is synchronous initial time；T1, t2, t3, t4 are the different sampling stages point in frequency band f, f1, f2, f3
It is the fundamental frequency of different frequency bands.As seen from Figure 2, the sample mode of cogradient matrix reception technique are as follows: in sometime point, to difference
Data in frequency band are sampled, and one group of data is obtained, and then in different time points, are adopted to the data in different frequency bands
Sample, to obtain multi-group data, so that multi-group data forms data matrix, to guarantee the reliability of data transmission.
The cogradient matrix reception technique is advantageous in that: the load of low voltage electric network is continuous dynamic change, therefore it is hindered
It is anti-that also in continuous dynamic change, the signal that low voltage electric network is transmitted includes useful signal and interference signal, but a certain specific
At time point, interference signal in certain frequency band is generally weaker, energy level is lower, and useful signal is stronger, energy level is higher, therefore, this
The mode of sampling ensure that received reliability simultaneously from time domain to frequency domain.
Based on the cogradient matrix reception technique, the first filter unit 110 of the invention includes multiple first filtering in parallel
Unit, as multiple frequency bands for receiving input signal.Wherein, each first filter unit works over different frequency bands,
To filter out the input signal of the different frequency at same time point respectively, is then sampled, filtered out not in different time points
With the input signal of the different frequency at time point, to form the matrix of input signal.
Illustratively, the band bandwidth of each first filter unit work can be preset.Illustratively, the first filter
Wave unit 110 can be connected to processing unit 300, so that this, which presets, to be completed by processing unit 300.
Illustratively, the first filter unit 110 can be bandpass filter, bandstop filter etc., as long as can be realized
The filter of the input signal of different frequency bands is filtered out, this is not limited by the present invention.Preferably, the first filter unit 110
For bandpass filter.
Wherein, signal holding unit 120 is connected between the first filter unit 110 and signal extraction unit 130, for protecting
Hold the amplitude of the input signal filtered out.Illustratively, signal holding unit 120 may include and multiple first filtering in parallel
The signal holding unit of the one-to-one multiple parallel connections of unit 110, for being filtered out from the reception of corresponding first filter unit 110
Different frequency input signal, and using Linear Amplifer and compression amplification efficient combination the amplitude of input signal is maintained at
In a certain range, in order to subsequent processing.Specifically, when input signal is weak signal, linear amplifier circuit work, to increase
The amplitude of input signal；When input signal is strong signal, starting compression amplifying circuit, to reduce the amplitude of input signal.
Illustratively, signal holding unit 120 may include automatic gain control amplifier etc..It should be noted that signal is kept
Unit 120 can also include that other are able to carry out the circuit or logic of automatic growth control, and this is not limited by the present invention.
Wherein, signal extraction unit 130 is connected between signal holding unit 120 and processing unit 300, is used for from described
Transmission signal is extracted in input signal, and extracted transmission signal is sent to processing unit 300.Illustratively, signal mentions
Take unit 130 may include with the signal extraction unit of the one-to-one multiple parallel connections of multiple signal holding units 120 in parallel, respectively
A signal extraction unit extracts the transmission signal of different frequency respectively from the input signal filtered out.
Illustratively, signal extraction unit 130 may include demodulator.It should be noted that signal extraction unit 130 can also include
Other are able to carry out the device, circuit or logic of signal extraction, and this is not limited by the present invention.
Wherein, processing unit 300 be used for event handling and task schedule, such as processing unit 300 can be used for controlling it is each
The band bandwidth that first filter unit 110 is filtered, and based on carrying out by the transmission signal to the different frequency extracted
It calculates, processing, to generate output signal etc..
Illustratively, processing unit 300 may include microprocessor, signal processor, specific integrated circuit, application specific standard production
Product, Complex Programmable Logic Devices etc..Preferably, processing unit 300 includes microcontroller.
Wherein, signal sending circuit 200 is connected to processing unit 300, the output signal for generating to processing unit 300
It carries out a series of processing and is sent to by control unit.Specifically, signal sending circuit 200 may include spectrum-spreading unit 210, signal
Coupling unit 220, the second filter unit 230 and signal amplification unit 240 etc..Illustratively, spectrum-spreading unit 210 may include direct sequence
Frequency multiplier, for carrying out Direct Sequence Spread Spectrum to output signal.Illustratively, signal coupling unit 220 may include modulator, use
In output signal being modulated on multiple frequency bands in order to sending.Second filter unit 230 may include low-pass filter, for pair
Modulated signal carries out low-pass filtering.Illustratively, signal amplification unit 240 may include amplifier, for carrying out to output signal
It is exaggerated in order to send.
In one embodiment of the invention, switch actuator 10 can also include synchronous recognition unit 400, be connected to
Between low-voltage power line and processing unit 300, the synchronization signal in input signal is for identification to determine synchronous point.
Switch actuator of the invention the utility model has the advantages that
(1) switch actuator of the invention uses narrow-band power line carrier technology as communication link, using devices at full hardware knot
Structure receives signal by cogradient matrix reception technique in different frequency bands, some one-segment caused by can getting around because of impedance variations
Decaying, while intensive sampling is multiple over a plurality of bands within the time much smaller than change rate signal, can effectively filter out
High-frequency alternating noise, this mode of sampling ensure that received reliability simultaneously from time domain to frequency domain.
(2) it due to all having demodulated signal in different frequency bands, and according to certain rule weighing operation, can incite somebody to action in this way
The transmission Signal separator being mingled in noise comes out, and substantially increases the receiving sensitivity of low-voltage powerline carrier communication.
(3) for the signal of different frequency, low-voltage power line can show different impedance characteristics, and this multiband is synchronous
Matrix form, which receives mode, can obtain the transmission signal load under particular moment, signal will not be caused to lose because of the dynamic change of impedance
It loses, therefore the communication distance that finally switch actuator of the invention can be made to be applicable in uses low voltage power line carrier compared to other
Have for the switch actuator of transmission and is obviously improved.
According to another embodiment of the present invention, a kind of signal receiving circuit is additionally provided, the signal receiving circuit is for leading to
Low-voltage power line is crossed to receive input signal from signal generating apparatus and take out transmission signal from it.
Wherein, the signal generating apparatus can include but is not limited to stationary computers, mobile computer or they
Combination.Illustrative fixed computer may include desktop computer, work station, personal computer, thin-client, terminal, trip
Gaming machine, personal video recorder (PVR), set-top box etc. are such.Illustrative mobile computer may include laptop, put down
Plate computer, wearable computer, the calculating equipment of implantation, telecommunication apparatus, smart phone, automobile computer, personal digital assistant
(PDA), portable gaming device, media player, camera etc. are such.
Wherein, in the present invention, low-voltage power line can be power supply line used in resident's daily life building, also
It can be the industrial power supply line etc. of 380V.Illustratively, power supply line can be nonpolarity power supply line.
It can be seen that switch actuator of the invention only need to be by power transmission line original in building, without it
The transmission of the data between signal generating apparatus and signal receiving circuit 100 can be realized in his any equipment.Using original low pressure
Power line can save arrangement special signal transmission line.In addition, the method that joined nonpolarity power supply line, it can be further excellent
Change installation, so that construction is more convenient, quick.
Specifically, signal receiving circuit may include the first filter unit, signal holding unit and signal extraction unit.Its
In, the first filter unit is by low-voltage power line connection signal generating means, for receiving input signal by low-voltage power line
And it filters.Since there are many interference signals in the signal of low-voltage power line transmission, in order to improve receiving sensitivity, guarantee
Illustratively cogradient matrix reception technique can be used in data transmission quality.The sample mode of cogradient matrix reception technique are as follows:
Sometime point samples the data in different frequency bands, one group of data is obtained, then in different time points, to different frequencies
Band in data sampled, to obtain multi-group data so that multi-group data formed data matrix, with guarantee data transmission can
By property.
The cogradient matrix reception technique is advantageous in that: the load of low voltage electric network is continuous dynamic change, therefore it is hindered
It is anti-that also in continuous dynamic change, the signal that low voltage electric network is transmitted includes useful signal and interference signal, but a certain specific
At time point, interference signal in certain frequency band is generally weaker, energy level is lower, and useful signal is stronger, energy level is higher, therefore, this
The mode of sampling ensure that received reliability simultaneously from time domain to frequency domain.
Based on the cogradient matrix reception technique, the first filter unit of the invention includes that multiple first filtering in parallel are single
Member, as multiple frequency bands for receiving input signal.Wherein, each first filter unit works over different frequency bands, with
The input signal for filtering out the different frequency at same time point respectively, is then sampled in different time points, filters out difference
The input signal of the different frequency at time point, to form the matrix of input signal.
Illustratively, the band bandwidth of each first filter unit work can be preset.
Illustratively, the first filter unit can be bandpass filter, bandstop filter etc., filter out as long as can be realized
The filter of the input signal of different frequency bands, this is not limited by the present invention.Preferably, the first filter unit is band logical filter
Wave device.
Wherein, signal holding unit is connected between the first filter unit and signal extraction unit, is filtered out for keeping
Input signal amplitude.Illustratively, signal holding unit may include a pair of with multiple first filter units one in parallel
The signal holding unit for the multiple parallel connections answered, for receiving the input of the different frequency filtered out from corresponding first filter unit
Signal, and using Linear Amplifer and the efficient combination of compression amplification by the amplitude of input signal keep in a certain range, so as to
In subsequent processing.Specifically, when input signal is weak signal, linear amplifier circuit work, to increase the amplitude of input signal；
When input signal is strong signal, starting compression amplifying circuit, to reduce the amplitude of input signal.
Illustratively, signal holding unit may include automatic gain control amplifier etc..It should be noted that signal holding unit
It can also include that other are able to carry out the circuit or logic of automatic growth control, this is not limited by the present invention.
Wherein, signal extraction unit is connected to signal holding unit, for extracting transmission signal from the input signal,
And extracted transmission signal is sent to processing unit and is handled.Illustratively, signal extraction unit may include with it is multiple
The signal extraction units of the one-to-one multiple parallel connections of signal holding unit in parallel, each signal extraction unit is from filtering out
The transmission signal of different frequency is extracted in input signal respectively.
Illustratively, signal extraction unit may include demodulator.It should be noted that signal extraction unit can also include other energy
Device, circuit or the logic of signal extraction are enough carried out, this is not limited by the present invention.
According to the signal receiving circuit of the present embodiment using narrow-band power line carrier technology as communication link, use is fully hard
Part structure receives signal by cogradient matrix reception technique in different frequency bands, some list caused by can getting around because of impedance variations
Frequency range decaying, while intensive sampling is multiple over a plurality of bands within the time much smaller than change rate signal, it can be effective
High-frequency alternating noise is filtered out, this mode of sampling ensure that received reliability simultaneously from time domain to frequency domain.And due to
Signal is all demodulated in different frequency bands, and according to certain rule weighing operation, the biography that can will be mingled in noise in this way
Defeated Signal separator comes out, and substantially increases the receiving sensitivity of low-voltage powerline carrier communication.In addition, for the letter of different frequency
Number, low-voltage power line can show different impedance characteristics, and this multiband cogradient matrix formula reception mode can obtain specific
When the transmission signal load inscribed, dropout will not be led to because of the dynamic change of impedance, therefore can finally make the present embodiment
The communication distance that may be implemented of signal receiving circuit the signal receiving circuit of low-voltage power line carrier transmission is used compared to other
For have be obviously improved.
The present invention has been explained by the above embodiments, but it is to be understood that, above-described embodiment is only intended to
The purpose of citing and explanation, is not intended to limit the invention to the scope of the described embodiments.Furthermore those skilled in the art
It is understood that the present invention is not limited to the above embodiments, introduction according to the present invention can also be made more kinds of member
Variants and modifications, all fall within the scope of the claimed invention for these variants and modifications.Protection scope of the present invention by
The appended claims and its equivalent scope are defined.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, apparatus embodiments described above are merely indicative, for example, the division of the unit, only
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be tied
Another equipment is closed or is desirably integrated into, or some features can be ignored or not executed.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the present invention and help to understand one or more of the various inventive aspects,
To in the description of exemplary embodiment of the present invention, each feature of the invention be grouped together into sometimes single embodiment, figure,
Or in descriptions thereof.However, the method for the invention should not be construed to reflect an intention that i.e. claimed
The present invention claims features more more than feature expressly recited in each claim.More precisely, such as corresponding power
As sharp claim reflects, inventive point is that the spy of all features less than some disclosed single embodiment can be used
Sign is to solve corresponding technical problem.Therefore, it then follows thus claims of specific embodiment are expressly incorporated in this specific
Embodiment, wherein each, the claims themselves are regarded as separate embodiments of the invention.
It will be understood to those skilled in the art that any combination pair can be used other than mutually exclusive between feature
All features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed any method
Or all process or units of equipment are combined.Unless expressly stated otherwise, this specification (is wanted including adjoint right
Ask, make a summary and attached drawing) disclosed in each feature can be replaced with an alternative feature that provides the same, equivalent, or similar purpose.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention
Within the scope of and form different embodiments.For example, in detail in the claims, embodiment claimed it is one of any
Can in any combination mode come using.
Various component embodiments of the invention can be implemented in hardware, or to run on one or more processors
Software module realize, or be implemented in a combination thereof.It will be understood by those of skill in the art that can be used in practice
Microprocessor or digital signal processor (DSP) realize some moulds in article analytical equipment according to an embodiment of the present invention
The some or all functions of block.The present invention is also implemented as a part or complete for executing method as described herein
The program of device (for example, computer program and computer program product) in portion.It is such to realize that program of the invention can store
On a computer-readable medium, it or may be in the form of one or more signals.Such signal can be from internet
Downloading obtains on website, is perhaps provided on the carrier signal or is provided in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.Word "comprising" is not arranged
Except there are element or steps not listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of more
A such element.The present invention can be by means of including the hardware of several different elements and by means of properly programmed calculating
Machine is realized.In the unit claims listing several devices, several in these devices can be by same
Hardware branch embodies.The use of word first, second, and third does not indicate any sequence.It can be by these word solutions
It is interpreted as title.
The above description is merely a specific embodiment or to the explanation of specific embodiment, protection of the invention
Range is not limited thereto, and anyone skilled in the art in the technical scope disclosed by the present invention, can be easily
Expect change or replacement, should be covered by the protection scope of the present invention.Protection scope of the present invention should be with claim
Subject to protection scope.
Claims (18)
1. a kind of switch actuator, which is characterized in that including signal receiving circuit, the signal receiving circuit includes:
First filter unit of multiple parallel connections, for receiving input signal by low-voltage power line and filtering, wherein each described
First filter unit filters out the input signal of different frequency respectively；And
The signal extraction unit of multiple parallel connections, for extracting transmission signal from the input signal, wherein each signal
Extraction unit extracts the transmission signal of different frequency respectively from the input signal filtered out.
2. switch actuator as described in claim 1, which is characterized in that wherein each first filter unit is for filtering
The input signal of the different frequency at same time point out.
3. switch actuator as claimed in claim 2, which is characterized in that wherein further, each first filtering is single
Member is also used to filter out the input signal of the different frequency of different time points, to form the matrix of the input signal.
4. switch actuator as described in claim 1, which is characterized in that the signal receiving circuit further includes multiple in parallel
Signal holding unit is connected between first filter unit and the signal extraction unit, for keep filtering out
The amplitude of input signal.
5. switch actuator as claimed in claim 4, which is characterized in that the signal holding unit includes automatic growth control
Amplifier.
6. switch actuator as described in claim 1, which is characterized in that the switch actuator further includes processing unit, institute
It states processing unit and is connected to first filter unit, filtered for controlling each of multiple described first filter units
Band bandwidth.
7. switch actuator as claimed in claim 6, which is characterized in that the processing unit is additionally coupled to the signal extraction
Unit, for being handled multiple transmission signals to generate output signal.
8. switch actuator as claimed in claim 6, which is characterized in that the switch actuator further includes that synchronous identification is single
Member, the synchronous recognition unit are connected between the low-voltage power line and the processing unit, for identification the input letter
Synchronization signal in number is to determine synchronous point.
9. switch actuator as described in claim 1, which is characterized in that first filter unit includes bandpass filter.
10. switch actuator as described in claim 1, which is characterized in that the signal extraction unit includes demodulator.
11. switch actuator as described in claim 1, which is characterized in that the switch actuator further includes that signal sends electricity
Road, the signal sending circuit include spectrum-spreading unit, signal coupling unit, the second filter unit and signal amplification unit.
12. a kind of signal receiving circuit, which is characterized in that the signal receiving circuit includes:
First filter unit of multiple parallel connections, for receiving input signal by low-voltage power line and filtering, wherein each described
First filter unit filters out the input signal of different frequency respectively；And
Multiple signal extraction units, for extracting transmission signal from the input signal, wherein each signal extraction list
Member extracts the transmission signal of different frequency respectively from the input signal filtered out.
13. signal receiving circuit as claimed in claim 12, which is characterized in that wherein each first filter unit is used for
Filter out the input signal of the different frequency at same time point.
14. signal receiving circuit as claimed in claim 13, which is characterized in that wherein further, each first filter
Wave unit is also used to filter out the input signal of the different frequency of different time points, to form the square of the input signal
Battle array.
15. signal receiving circuit as claimed in claim 12, which is characterized in that the signal receiving circuit further includes multiple letters
Number holding unit, is connected between first filter unit and the signal extraction unit, defeated for keeping filtering out
Enter the amplitude of signal.
16. signal receiving circuit as claimed in claim 15, which is characterized in that the signal holding unit includes automatic gain
Control amplifier.
17. signal receiving circuit as claimed in claim 12, which is characterized in that first filter unit includes bandpass filtering
Device.
18. signal receiving circuit as claimed in claim 12, which is characterized in that the signal extraction unit includes demodulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811532628.0A CN109450472B (en) | 2018-12-14 | 2018-12-14 | Switch actuator and signal receiving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811532628.0A CN109450472B (en) | 2018-12-14 | 2018-12-14 | Switch actuator and signal receiving circuit |
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| CN109450472A true CN109450472A (en) | 2019-03-08 |
| CN109450472B CN109450472B (en) | 2024-04-02 |
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| CN110380757A (en) * | 2019-05-27 | 2019-10-25 | 上海感拓智能科技有限公司 | A kind of self-adaptive electric power carrier wave communication device |
| CN112311421A (en) * | 2020-10-24 | 2021-02-02 | 青岛鼎信通讯股份有限公司 | Medium-voltage communication equipment receiving circuit based on AGC |
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|---|---|
| CN109450472B (en) | 2024-04-02 |
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