CN106331563B - A kind of data-signal and the conllinear Transmission system of DC power supply and method - Google Patents
A kind of data-signal and the conllinear Transmission system of DC power supply and method Download PDFInfo
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- CN106331563B CN106331563B CN201610907349.2A CN201610907349A CN106331563B CN 106331563 B CN106331563 B CN 106331563B CN 201610907349 A CN201610907349 A CN 201610907349A CN 106331563 B CN106331563 B CN 106331563B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
Abstract
The present invention provides a kind of data-signals and the conllinear Transmission system of DC power supply and method, and when headend equipment will send data to rear end equipment, data-signal is inputted from the data receiver of front-end circuit；Front-end circuit carries out coded treatment to the data of input, exports synchronous pwm signal；Pwm signal is boosted, the voltage of pwm signal is higher than the voltage of DC power supply on first terminal；The mixed signal of pwm signal and DC power signal composition by two-wire system bus, transmit backward by end equipment；After signal is passed to back-end circuit, pwm signal and DC power signal separation, DC power signal are output to DC power output end mouth；Back-end circuit carries out dissection process to the synchronization pwm signal of input, exports corresponding data-signal.Whole system centrally connected power supply in the present invention, and the conllinear transmission of DC power supply and high-speed data signal is realized in two-wire system bus, when for controling and monitoring system, reducing cable laying quantity, reducing system cost.
Description
Technical field
The present invention relates to technical field of video monitoring, is collinearly transmitted more particularly, to a kind of data-signal and DC power supply and be
System and method.
Background technique
Currently, Video Supervision Technique is widely used in monitoring, security protection, quality inspection etc..With computer techno-stress skill
The development of art, it is universal and network bandwidth expand rapidly, video monitoring has had evolved to Network Multimedia Surveillance System, i.e., will
Digital video monitoring technology is combined with network technology, at the scene in the case of monitoring host computer unattended duty, realize local area network or
The function that Internet is remotely monitored.But in similar fields such as video monitorings, de-centralized control is mostly used, line layout is more,
Higher cost.
Summary of the invention
The purpose of the present invention is to provide a kind of data-signals and the conllinear Transmission system of DC power supply and method, existing to solve
The problem of having line layout present in video monitoring system more, being unfavorable for centralized control and higher cost.
A kind of conllinear Transmission system of data-signal and DC power supply provided by the invention, including front-end circuit, back-end circuit
And first terminal；
The front-end circuit includes:
First DC power transmission circuit, is used for transmission DC power supply；
First processing module exports synchronous pwm signal for carrying out coded treatment to the data-signal of input；
Booster circuit obtains the voltage of the synchronous pwm signal higher than described for boosting to synchronous pwm signal
The pulse signal of the voltage of DC power supply；
First power circuit, for providing DC power supply to first processing module；
The back-end circuit includes one or more rear ends sub-circuit；
The rear end sub-circuit includes:
Second DC power transmission circuit, is used for transmission DC power supply；
Second processing module exports corresponding data-signal for carrying out dissection process to the synchronization pwm signal of input；
Second source circuit, for providing DC power supply to Second processing module；
First power circuit and the power input of first processing module connect, the signal output end of first processing module with
One end of booster circuit connects；One end of first DC power transmission circuit is connect with DC supply input mouth, the first direct current
The other end of power delivery circuit and the other end of booster circuit are connect with one end of first terminal, the other end of first terminal
It is connect respectively with one end of one end of Second processing module and the second DC power transmission circuit, the second DC power transmission circuit
The other end connect with DC power output end mouth.
Preferably, the method for synchronization of the first processing module is that, when input data signal is low level, first is handled
Module output pwm signal, when input data signal is high level, first processing module not output pwm signal.
Preferably, the rear end sub-circuit further includes the first rectification and voltage division circuit and the second rectification and voltage division circuit；
The other end of the first terminal passes through the first rectification and voltage division circuit and the second rectification and voltage division circuit and second respectively
First signal input part of processing module is connected with second signal input terminal.
Preferably, the first rectification and voltage division circuit includes the 7th rectifier diode, the 17th capacitor and the 7th resistance；
The other end of the first terminal connects the anode of the 7th rectifier diode, the cathode difference of the 7th rectifier diode
Connect one end, one end of the 7th resistance and the first signal input part of Second processing module of the 17th capacitor, the 17th capacitor
The other end and the other end of the 7th resistance be grounded.
Preferably, the second rectification and voltage division circuit includes the 8th rectifier diode, the 8th resistance, the 9th resistance, the tenth
Resistance and the 18th capacitor；
The other end of the first terminal connects the anode of the 8th rectifier diode, the cathode difference of the 8th rectifier diode
One end, one end of the 9th resistance and one end of the 18th capacitor of the 8th resistance are connected, the other end of the 8th resistance passes through the tenth
Four capacity earths, the other end ground connection of the 18th capacitor, the other end of the 9th resistance are separately connected second signal input terminal and the
The other end of one end of ten resistance, the tenth resistance is grounded.
Preferably, the booster circuit includes first resistor, the 6th capacitor and the first inductance；
The signal output end of the first processing module connects one end of the 6th capacitor, the 6th electricity by first resistor respectively
The other end of appearance is separately connected one end of first terminal and one end of the first inductance, and the other end of the first inductance connects the first power supply
One end of circuit.
Preferably, first power circuit is low pressure difference linear voltage regulator, and the signal of low pressure difference linear voltage regulator inputs
End connection DC supply input mouth, the power input of the signal output end connection first processing module of low pressure difference linear voltage regulator
End.
Preferably, the first processing module and Second processing module are single-chip microcontroller.
A kind of conllinear transmission method of data-signal and DC power supply provided by the invention, successively the following steps are included:
First, when headend equipment will send data to rear end equipment, data receiver of the data-signal from front-end circuit
Input；
Second, front-end circuit carries out coded treatment to the data of input, exports synchronous pwm signal；
Third boosts pwm signal, and the voltage of pwm signal is higher than the voltage of DC power supply on first terminal；
4th, the mixed signal that pwm signal and DC power signal form by two-wire system bus, transmit backward by end equipment；
5th, after signal is passed to back-end circuit, pwm signal and DC power signal separation, DC power signal output
To DC power output end mouth；
6th, back-end circuit is used to carry out dissection process to the synchronization pwm signal of input, exports corresponding data-signal.
Preferably, the method for synchronization in second step is that, when input data signal is low level, first processing module is defeated
Pwm signal out, when input data signal is high level, first processing module not output pwm signal.
Compared with prior art, a kind of conllinear Transmission system of data-signal and DC power supply provided by the invention and method tool
It has the advantage that
1, whole system centrally connected power supply, and realize in two-wire system bus being total to for DC power supply and high-speed data signal
Line transmission, when for controling and monitoring system, reducing cable laying quantity, reducing system cost；
2, data transmission distance is long, and message transmission rate is high, can support the real time high-speeds data application such as DMAX512；
3, data-signal can transmitted in both directions, and can multi computer communication；
4, the present invention has many advantages, such as that circuit is simple, low in cost.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is data-signal provided by the invention and the conllinear Transmission system of DC power supply includes a front-end circuit and one
The circuit diagram when sub-circuit of rear end；
Fig. 2 is the flow chart of data-signal provided by the invention and the conllinear transmission method of DC power supply；
Fig. 3 is the procedure chart of data-signal conversion, transmission and reduction in the present invention.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Fig. 1 is data-signal provided by the invention and the conllinear Transmission system of DC power supply includes a front-end circuit and one
The circuit diagram when sub-circuit of rear end；Fig. 2 is the flow chart of data-signal provided by the invention and the conllinear transmission method of DC power supply；
Fig. 3 is the procedure chart of data-signal conversion, transmission and reduction in the present invention.
As shown in Figure 1, a kind of data-signal provided by the invention and the conllinear Transmission system of DC power supply, including front end electricity
Road, back-end circuit and first terminal；
The front-end circuit includes:
First DC power transmission circuit, is used for transmission DC power supply；
First processing module U2 exports synchronous pwm signal for carrying out coded treatment to the data-signal of input；
Booster circuit, for boosting to synchronous pwm signal；
First power circuit, for providing DC power supply to first processing module U2；
The back-end circuit includes one or more rear ends sub-circuit；
The rear end sub-circuit includes:
Second DC power transmission circuit, is used for transmission DC power supply；
Second processing module exports corresponding data-signal for carrying out dissection process to the synchronization pwm signal of input；
Second source circuit, for providing DC power supply to Second processing module；
First power circuit is connect with the power input of first processing module U2, the signal output of first processing module U2
End is connect with one end of booster circuit；One end of first DC power transmission circuit is connect with DC supply input mouth, and first
The other end of DC power transmission circuit and the other end of booster circuit are connect with one end of first terminal, first terminal it is another
One end is connect with one end of one end of Second processing module and the second DC power transmission circuit respectively, the second transmitting DC
The other end of circuit is connect with DC power output end mouth.
Compared with prior art, a kind of conllinear Transmission system of data-signal and DC power supply provided by the invention has following
Advantage:
1, whole system centrally connected power supply, and realize in two-wire system bus being total to for DC power supply and high-speed data signal
Line transmission, when for controling and monitoring system, reducing cable laying quantity, reducing system cost；
2, data transmission distance is long, and message transmission rate is high, can support the real time high-speeds data application such as DMAX512；
3, data-signal can transmitted in both directions, and can multi computer communication；
4, the present invention has many advantages, such as that circuit is simple, low in cost.
In the present embodiment, composition front-end circuit it is identical with the appliance component of rear end sub-circuit, and front-end circuit and
Rear end sub-circuit is in mirror symmetry.In actual use, front-end circuit and rear end sub-circuit are all in direct current on system bus
Source is accessed by the power input port of front-end circuit, is exported at the DC power output end mouth of rear end sub-circuit.
In the present embodiment, the negative terminal cable that system bus is represented by the VM anode cable represented and GND, total both threads cable group
At.
Preferably, the method for synchronization of the first processing module U2 is, when input data signal is low level, at first
Module U2 output pwm signal is managed, when input data signal is high level, first processing module U2 not output pwm signal.
Preferably, the rear end sub-circuit further includes the first rectification and voltage division circuit and the second rectification and voltage division circuit；
The other end of the first terminal passes through the first rectification and voltage division circuit and the second rectification and voltage division circuit and second respectively
First signal input part of processing module is connected with second signal input terminal.
Preferably, the first rectification and voltage division circuit includes the 7th rectifier diode D7, the 17th capacitor C17 and the 7th electricity
Hinder R7；
The other end of the first terminal connects the anode of the 7th rectifier diode D7, the cathode of the 7th rectifier diode D7
It is separately connected one end, one end of the 7th resistance R7 and the first signal input part of Second processing module of the 17th capacitor C17, the
The other end of 17 capacitor C17 and the other end of the 7th resistance R7 are grounded.
Preferably, the second rectification and voltage division circuit includes the 8th rectifier diode D8, the 8th resistance R8, the 9th resistance
R9, the tenth resistance R10 and the 18th capacitor C18；
The other end of the first terminal connects the anode of the 8th rectifier diode D8, the cathode of the 8th rectifier diode D8
It is separately connected one end, one end of the 9th resistance R9 and one end of the 18th capacitor C18 of the 8th resistance R8, the 8th resistance R8's is another
One end is grounded by the 14th capacitor C14, and the other end ground connection of the 18th capacitor C18, the other end of the 9th resistance R9 connects respectively
One end of second signal input terminal and the tenth resistance R10 is connect, the other end of the tenth resistance R10 is grounded.
In the present embodiment, the other end of first terminal is being separately connected the 7th rectifier diode D7 just by the 16th capacitor
Pole, the anode of the 8th rectifier diode D8 and the cathode of the 5th rectifying tube D5, the plus earth of the 5th rectifying tube D5.
In the present embodiment, DC power signal and data-signal pass through first terminal, data-signal by the second inductance L2 every
From via the port P3.3 of the 15th capacitor C15 and the 6th resistance R6 the reduction voltage circuit connection single-chip microcontroller formed, while also through the
One rectification and voltage division circuit and the second rectification and voltage division circuit are separately connected the port P5.4 and the port P5.5 of single-chip microcontroller.DC power supply letter
Number pass through the second inductance L2, and it is defeated after the filter action of the tenth capacitor C10 and the 11st capacitor C11 to be transferred to DC power supply
Exit port.
Preferably, the booster circuit includes first resistor R1, the 6th capacitor C6 and the first inductance L1；
The signal output end of the first processing module U2 passes through one end of the 6th capacitor R6 of first resistor R1 connection respectively,
The other end of 6th capacitor R6 is separately connected one end of first terminal and one end of the first inductance L1, the other end of the first inductance L1
Connect one end of the first power circuit.
Preferably, first power circuit is low pressure difference linear voltage regulator, and the signal of low pressure difference linear voltage regulator inputs
The power supply of end connection DC supply input mouth, the signal output end connection first processing module U2 of low pressure difference linear voltage regulator is defeated
Enter end.
In the present embodiment, the first power circuit and second source circuit use low pressure difference linear voltage regulator and its peripheral circuit
Component realizes that second source circuit includes the second low pressure difference linear voltage regulator U3, the 12nd capacitor C12, the 13rd capacitor C13
With the 14th capacitor C14, DC power output end mouth is separately connected the signal input port of the second low pressure difference linear voltage regulator U3
It is grounded with the other end of one end of the 12nd capacitor C12, the 12nd capacitor C12, the end BP of the second low pressure difference linear voltage regulator U3
Mouth is grounded by the 13rd capacitor C13, and the signal output port of the second low pressure difference linear voltage regulator U3 is separately connected back-end circuit
One end of the power port Vcc and the 14th capacitor C14 of middle single-chip microcontroller, the other end ground connection of the 14th capacitor C14.First power supply
Circuit includes the first low pressure difference linear voltage regulator U1, third capacitor C3, the 4th capacitor C4 and the 5th capacitor C5, due to former-section circuit
Symmetrical with rear terminal current mirror, connection relationship repeats no more.Front-end circuit includes first capacitor C1, the second capacitor C2, third
Capacitor C3, the 4th capacitor C4, the 5th capacitor C5, the 6th capacitor R6, the 7th capacitor C7, the 8th capacitor C8, the 9th capacitor C9, first
Inductance L1, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the first rectifier diode
D1, the second rectifier diode D2, third rectifier diode D3, the 4th rectifier diode D4, first processing module U2 and first are low
Pressure difference linear voltage regulator U1, since former-section circuit and rear terminal current mirror are symmetrical, connection relationship is repeated no more.
Preferably, the first processing module U2 and Second processing module are single-chip microcontroller, in the present embodiment, utilize 8pin
Low cost monolithic machine STC15W201S cooperates the conllinear transmission of peripheral Passive components realization DC power supply and high-speed data signal.
As shown in Figures 2 and 3, the conllinear transmission method of a kind of data-signal and DC power supply provided by the invention successively includes
Following steps:
First, when headend equipment will send data to rear end equipment, data receiver of the data-signal from front-end circuit
RxD1 input；
Second, front-end circuit carries out coded treatment to the data of input, exports synchronous pwm signal；
The method of synchronization is that, when input data signal is low level, first processing module U2 output pwm signal works as input
When data-signal is high level, first processing module U2 not output pwm signal.
Third boosts pwm signal, and the voltage of pwm signal is higher than the voltage of DC power supply on first terminal；
When first processing module U2 output pwm signal, a class BOOST boost configuration is formed through R1, C6, L1, the
One inductance L1 right end forms the pulse signal for being higher than direct current power source voltage on cable.
4th, the mixed signal that pwm signal and DC power signal form by two-wire system bus, transmit backward by end equipment；
5th, after signal is passed to back-end circuit, pwm signal and DC power signal separation, DC power signal output
To DC power output end mouth；
6th, back-end circuit is used to carry out dissection process to the synchronization pwm signal of input, exports corresponding data-signal.
Pwm signal is stopped by the second inductance L2, and by the 16th capacitive coupling in back-end circuit, by the 7th rectification
The programmable comparator negative input end of Second processing module is loaded into after diode D7, the 8th rectifier diode D8 rectification respectively
(CMP-) and positive input terminal (CMP+).
When the 16th capacitor does not have pwm signal coupling output, the programmable comparator negative input end of Second processing module
Outside, because there is the pull down resistor i.e. presence of the 7th resistance R7, negative input end port voltage is 0 volt；Programmable comparator positive input
End, because there is the pull-up resistor i.e. presence of the 8th resistance R8, using meeting after the partial pressure of the 9th resistance R9 and the tenth resistance R10
There is certain voltage, programmable comparator output at this time is positive.
The programmable comparator negative input end of Second processing module when the 16th capacitor has pwm signal coupling output, by
It will appear certain voltage in the integral action of the 17th capacitor C17；Meanwhile programmable comparator positive input terminal, due to the 18th
The integral action of capacitor C18 also will appear certain voltage, but after the partial pressure of the 9th resistance R9 and the tenth resistance R10, can compile
The voltage of journey comparator positive input terminal is lower than the voltage of programmable comparator negative input end；At this point, programmable comparator output knot
Fruit is negative.
It is realized by software programming: when programmable comparator output result is timing, in the transmitting terminal of Second processing module
High level is exported on TxD2；It is defeated on the transmitting terminal TxD2 of Second processing module when programmable comparator output result is negative
Low level out, data-signal are able to input from front-end circuit and restore from back-end circuit to export.
In addition, back-end circuit can also similarly pass through the receiving end of Second processing module because front and back terminal circuit is identical
RxD2 loads data into the transmitting terminal TxD1 output for the Second processing module that front-end circuit is transmitted in two-wire system bus.
Power delivery ability of the invention is not less than 7V, 2A, i.e. power delivery ability is greater than 14W, it is proposed that power input
The voltage of mouth is 7-14V.Serial data maximum baud rate 460Kbps, minimum baud rate 120bps, application range is wide, baud rate
Adaptively.Maximum transmission distance of the present invention is not less than 500 meters.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of data-signal and the conllinear Transmission system of DC power supply, which is characterized in that including front-end circuit, back-end circuit and
One terminal；
The front-end circuit includes:
First DC power transmission circuit, is used for transmission DC power supply；
First processing module exports synchronous pwm signal for carrying out coded treatment to the data-signal of input；
Booster circuit, for boosting to synchronous pwm signal, the voltage for obtaining the synchronous pwm signal is higher than the direct current
The pulse signal of the voltage of power supply；
First power circuit, for providing DC power supply to first processing module；
The back-end circuit includes one or more rear ends sub-circuit；
The rear end sub-circuit includes:
Second DC power transmission circuit, is used for transmission DC power supply；
Second processing module exports corresponding data-signal for carrying out dissection process to the synchronization pwm signal of input；
Second source circuit, for providing DC power supply to Second processing module；
First power circuit and the power input of first processing module connect, the signal output end of first processing module and boosting
One end of circuit connects；One end of first DC power transmission circuit is connect with DC supply input mouth, the first DC power supply
The other end of transmission circuit and the other end of booster circuit are connect with one end of first terminal, the other end difference of first terminal
Connect with one end of one end of Second processing module and the second DC power transmission circuit, the second DC power transmission circuit it is another
One end is connect with DC power output end mouth.
2. data-signal according to claim 1 and the conllinear Transmission system of DC power supply, which is characterized in that at described first
The method of synchronization of reason module is, when input data signal is low level, first processing module output pwm signal, when input number
It is believed that when number being high level, first processing module not output pwm signal.
3. data-signal according to claim 1 and the conllinear Transmission system of DC power supply, which is characterized in that the rear terminal
Circuit further includes the first rectification and voltage division circuit and the second rectification and voltage division circuit；
The other end of the first terminal passes through the first rectification and voltage division circuit and the second rectification and voltage division circuit and second processing respectively
First signal input part of module is connected with second signal input terminal.
4. data-signal according to claim 3 and the conllinear Transmission system of DC power supply, which is characterized in that described first is whole
Flow point volt circuit includes the 7th rectifier diode, the 17th capacitor and the 7th resistance；
The other end of the first terminal connects the anode of the 7th rectifier diode, and the cathode of the 7th rectifier diode is separately connected
One end, one end of the 7th resistance and the first signal input part of Second processing module of 17th capacitor, the 17th capacitor it is another
The other end of one end and the 7th resistance is grounded.
5. data-signal according to claim 3 and the conllinear Transmission system of DC power supply, which is characterized in that described second is whole
Flow point volt circuit includes the 8th rectifier diode, the 8th resistance, the 9th resistance, the tenth resistance and the 18th capacitor；
The other end of the first terminal connects the anode of the 8th rectifier diode, and the cathode of the 8th rectifier diode is separately connected
The other end of one end, one end of the 9th resistance and one end of the 18th capacitor of the 8th resistance, the 8th resistance passes through the 14th electricity
Hold ground connection, the other end ground connection of the 18th capacitor, the other end of the 9th resistance is separately connected second signal input terminal and the tenth electricity
The other end of one end of resistance, the tenth resistance is grounded.
6. data-signal according to claim 1 and the conllinear Transmission system of DC power supply, which is characterized in that
The booster circuit includes first resistor, the 6th capacitor and the first inductance；
The signal output end of the first processing module connects one end of the 6th capacitor by first resistor respectively, the 6th capacitor
The other end is separately connected one end of first terminal and one end of the first inductance, and the other end of the first inductance connects the first power circuit
One end.
7. data-signal according to claim 1 and the conllinear Transmission system of DC power supply, which is characterized in that
First power circuit is low pressure difference linear voltage regulator, and the signal input part of low pressure difference linear voltage regulator connects direct current
Source input port, the power input of the signal output end connection first processing module of low pressure difference linear voltage regulator.
8. data-signal according to claim 1 and the conllinear Transmission system of DC power supply, which is characterized in that at described first
It manages module and Second processing module is single-chip microcontroller.
9. a kind of data-signal and the conllinear transmission method of DC power supply, which is characterized in that successively the following steps are included:
First, when headend equipment will send data to rear end equipment, data-signal is inputted from the data receiver of front-end circuit；
Second, front-end circuit carries out coded treatment to the data of input, exports synchronous pwm signal；
Third boosts pwm signal, and the voltage of pwm signal is higher than the voltage of DC power supply on first terminal；
4th, the mixed signal that pwm signal and DC power signal form by two-wire system bus, transmit backward by end equipment；
5th, after signal is passed to back-end circuit, pwm signal and DC power signal separation, DC power signal are output to directly
Flow output port of power source；
6th, back-end circuit is used to carry out dissection process to the synchronization pwm signal of input, exports corresponding data-signal.
10. data-signal according to claim 9 and the conllinear transmission method of DC power supply, which is characterized in that second step
In the method for synchronization be, when input data signal be low level when, first processing module output pwm signal, when input data believe
When number being high level, first processing module not output pwm signal.
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| CN201610907349.2A CN106331563B (en) | 2016-10-19 | 2016-10-19 | A kind of data-signal and the conllinear Transmission system of DC power supply and method |
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| CN107979381B (en) * | 2017-12-01 | 2020-02-11 | 天地融科技股份有限公司 | Data transmission circuit and device |
| CA3079768C (en) | 2017-12-01 | 2024-03-19 | Tendyron Corporation | Data transmitting circuit and apparatus, and data receiving circuit and apparatus |
| CN107968665B (en) * | 2017-12-01 | 2020-05-15 | 天地融科技股份有限公司 | Data transmission circuit, data reception circuit, and device |
| CN113489932A (en) * | 2021-07-19 | 2021-10-08 | 广州市保伦电子有限公司 | Device for realizing data, control and power transmission based on same coaxial line |
| CN113691275B (en) * | 2021-09-09 | 2023-07-25 | 苏州汇川控制技术有限公司 | Digital signal transmission circuit and digital signal transmission device |
| CN114363098A (en) * | 2021-12-03 | 2022-04-15 | 北京神经元网络技术有限公司 | Power supply circuit for field bus |
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