CN101009501A - A DC power line carrier communication method, system and lamp series using the system - Google Patents
A DC power line carrier communication method, system and lamp series using the system Download PDFInfo
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- CN101009501A CN101009501A CN200610033135.3A CN200610033135A CN101009501A CN 101009501 A CN101009501 A CN 101009501A CN 200610033135 A CN200610033135 A CN 200610033135A CN 101009501 A CN101009501 A CN 101009501A
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Abstract
The invention discloses a DC electric wire carrier wave communication method, system and lamps which uses the system; the transmitting end of the system of DC electric wire carrier wave generates the data signal and obtains the voltage pulse signal carrying the data information via the power source on-off controlled module, the voltage pulse signal is transmitted to the receiving node by the transmitting medium of two cores DC electric power wire, and the receiving node process the voltage pulse signal and obtain the power-supply source and the data signal which is used to control the object; the DC electric wire is the transmitting medium, and the property of DC determines the integral reliable anti-jamming of system; the voltage of DC is suitable the extent from 1.8V to 120V, using the frequency of communication protocol to transmit the data to control the on-off of the power source, the technique is easy to realize, the minimize module carrying wave engross small size, and convenient to install and maintenance, reduce the system cost greatly, and it can be used in the control of lamp, light adorn, home electric equipment or medical apparatus widely.
Description
Technical field
The present invention relates to a kind of communication means, system and system applies.Especially a kind of power line carrier communication method, system and system applies thereof.
Background technology
Power-line carrier communication and system, it is widely used in communication now, industries such as electric power, this technology are the comparatively advanced technology of the current communications industry, and this technology and system have two classes to use at present: alternating electromotive force line carrier communication technology and direct current modulation-demodulation technique.
Alternating electromotive force line carrier communication technology and system.This technology and system's implementation method are to carry out on the alternating current fire wire and the neutral line (zero line), move keying (FSK) as on the live wire and the neutral line (zero line), shielding, expand screen/code division multiple access (CDMA), quadrature amplitude modulation (QAM), multiple technologies schemes such as phase modulated demodulation, these technology all are that the data of transmission are resolved at receiving terminal in the mode that frequency or electric current change.Alternating electromotive force line carrier communication system can reach the transmission of big data quantity, is a kind of very mature technique, and main network-oriented communication is main high speed data communication services, as carrying out residential quarters water by power line, electricity, the long-range copy reading of gas meter.But the realization of this type of technology and system applies has following defective: the 1. high more easy more realization of voltage magnitude, lighting voltage (220/110V) commonly used realize that the difficulty of reliability data transmission is big.Very large-signal loss (10dB-30dB) is 2. arranged between three-phase power line.When communication distance was very near, difference is alternate may receive signal.General power carrier signal can only be uploaded defeated in the single-phase electricity line of force.3. the unlike signal coupled modes are different to power carrier signal loss, and coupled modes are wired-and ground coupling and line-center line be coupled.Line-ground coupled modes are compared with line-center line coupled modes, and power carrier signal is lost tens dB less, but line-ground lotus root is closed the not all regional power system of mode and all is suitable for.4. the intrinsic impulse disturbances of power line existence itself.The alternating current that uses has 50Hz and 60Hz at present, and then the cycle is 20ms and 16.7ms.In each ac cycle, two minor peaks appear, two minor peaks can be brought impulse disturbances twice, and fixing 100Hz or 120Hz impulse disturbances are promptly arranged on the power line, interference time about 2ms, fixedly interference must be handled.There is a kind of waveform that utilizes to cross the method for carrying out transfer of data in 0 short time, but owing to cross 0 time weak point, the synchronous bad control of practical application and AC wave shape, the modern communication Frame is long again, so be difficult to use.5. with high costs, the Installation and Debugging complexity has strict safety precaution requirement simultaneously.
Direct current modulation-demodulation technique and system.It is exactly telephone principle that the typical case of direct current modulation-demodulation technique uses, and is the data-modulated that transmits pulse current, carries out data demodulates at receiving terminal, guarantees reliability of applying.But this type of system applies is in consumer field, or some other field, cost, and the minimized size of realization technology and circuit module all becomes the bottleneck of its development.
Also having a kind of wire communication mode is the dedicated signal lines transmission technology, and its application is also very extensive, as LAN technology etc.This technology is separated power line and holding wire, the requirement of high low-speed communication in realizing, but comparatively speaking, this technology has following defective: 1. general many data lines and the power line of adopting transmits, and makes complex circuit; 2. the antagonism interference requirement is higher under the situation of at a high speed long distance; 3. particularly under the condition of single line parallel transmission load capacity poor, can not carry out the transmission of the long distance of multi-load.
Summary of the invention
For avoiding the defective of prior art and application system, what the invention provides provides a kind of application system that is used to realize DC power line carrier communication method, and simplicity of design is reliable, with low cost, can be widely used in light, lamp decoration, household electrical appliance, controls such as medicine equipment.
Another one order of the present invention provides a kind of DC power line carrier communication method of summary, can be that transmission medium transmits lot of data fast with the DC power line, strong interference immunity.
The present invention realizes above-mentioned purpose like this:
A kind of DC power line carrier communication system, it is characterized in that comprising the transmitting terminal that produces data-signal, produce the on/off controlled module of the voltage pulse signal that is loaded with data message accordingly according to input data signal control on/off, the receiving node of two core DC power lines of transmission voltage pulse signal and reception voltage pulse signal and decoding control controlled object, the transmitting terminal output is connected with on/off controlled module input, on/off controlled module output is connected with DC power line, and receiving node is formed certain topological structure by DC power line.
A kind of DC power line carrier communication method, the transmitting terminal that it is characterized in that the DC power line carrier communication system produces data-signal after the on/off controlled module obtains to be loaded with accordingly the voltage pulse signal of data message, DC power line with two cores is that transmission medium is transferred to receiving node with this voltage pulse signal, and receiving node is handled the back to voltage pulse signal and obtained necessary power supply of its work and the data-signal that controlled object is controlled.
The invention has the beneficial effects as follows: with the DC power line is transmission medium, and the characteristic of direct current has determined the reliable anti-interference of entire system; In carrier wave power supply power and power line attenuation characteristic, there is not the restriction of load and transmission range; The multiregion that the direct voltage amplitude all is suitable for from 1.8V to 120V; The frequency of utilizing communication protocol agreement is controlled the break-make of power supply with the transmission data, and technology is easy to realization; Realizing the module that minimizes of carrier wave, to take size little, and installation and maintenance is convenient, greatly reduces system cost, can be widely used in light, lamp decoration, household electrical appliance, controls such as medicine equipment.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples:
Fig. 1 is a linear pattern system construction drawing of the present invention;
Fig. 2 is a tree type system construction drawing of the present invention;
Fig. 3 is a transmitting terminal theory diagram of the present invention;
Fig. 4 is the transmitting terminal theory diagram of adding compunication module of the present invention
Fig. 5 is an on/off controlled module theory diagram of the present invention;
Fig. 6 is the receiving node theory diagram of controlled object of the present invention and the common power supply of Programmable Logic Controller;
Fig. 7 is the independently-powered receiving node theory diagram of controlled object of the present invention;
Fig. 8 is the protocol architecture figure of embodiments of the invention;
Fig. 9 is the system construction drawing of embodiments of the invention.
Embodiment
A kind of DC power line carrier communication method, the transmitting terminal 1 of DC power line carrier communication system produces data-signal after on/off controlled module 2 obtains to be loaded with accordingly the voltage pulse signal of data message, DC power line 3 with two cores is that transmission medium is transferred to receiving node 4 with this voltage pulse signal, and 4 pairs of voltage pulse signals of receiving node are handled the back and obtained necessary power supply of its work and the data-signal that controlled object 5 is controlled.
According to above-mentioned DC power line carrier communication method, designed the DC power line carrier communication system, mainly comprise transmitting terminal 1, on/off controlled module 2, two core DC power lines 3 and receiving node 4, its structure chart is as shown in Figure 1 and Figure 2.
Below the composition and the function thereof of each module of detailed description system:
1, the effect of transmitting terminal 1 is to produce corresponding data-signal by pre-set programs according to control data or command code.With reference to Fig. 3, transmitting terminal 1 mainly comprises Programmable Logic Controller 11, and its input is connected with data input device 12; Programmable Logic Controller 11 is transferred to on/off controlled module 2 with obtaining data-signal after the digital coding through output.Programmable Logic Controller 11 is a kind of widely used devices, as general single chip, PLD, CPLD device, DSP device, ARM level devices or the like such as ATMEL, PIC, EMC, can choose in above device according to different coding needs.Computer 15 that data input device 12 can be connected with Programmable Logic Controller 11 for memory 13, by communication interface modules 14 or the like.If the action that controlled object 5 need be finished is fairly simple, such as the lamp string, as long as finishing the display graphics of colour switching, light and shade variation generation changes or the like, like this as long as preliminary setting data is stored in the memory 13, Programmable Logic Controller 11 is connected with it, gets final product according to encoding after the keyboard input command reading of data.If the action more complicated of certain controlled object 5, perhaps need control in real time to change, can add communication interface modules 14, as RS232 interface module, RS484 interface module etc., directly be connected 15 with computer, data are by encoding in the computer 15 communication interface moduless 14 input Programmable Logic Controllers 11, with reference to Fig. 4.If when DC power supply and Programmable Logic Controller 11 demand voltages did not match, the power input of Programmable Logic Controller 11 can also be connected with voltage conversion module 16, as use integrated regulator of 78 series etc.
2, the on/off controlled module 2.Because the data-signal driving force that the Programmable Logic Controller 11 of transmitting terminal 1 is exported is little, can't realize the transfer of data of multinode, longer distance, the signal that need to add 2 pairs of data of on/off controlled module is handled, and obtains certain amplitude, transmission signals that power is bigger.Its drive circuit 21 and switching circuit 22 by cascade is formed, and drive circuit 21 inputs are connected with transmitting terminal 1 output, and switching circuit 22 outputs are connected with DC power line 3.Described drive circuit 21 is a triode, and switching circuit 22 is a field effect transistor.The data-signal of input amplifies the variation generation switch motion of rear drive field effect transistor according to data-signal through triode, control DC power supply break-make, form certain amplitude, voltage pulse signal that power is bigger at its output, this signal can be by DC power line 3 transmission on long distance.According to the needs of transmission voltage amplitude, field effect transistor is connected with corresponding DC power supply.
3, DC power line 3 is transmission mediums, as long as use two common core DC power lines 3, connects on/off controlled module 2 and receiving node 4, the transmission voltage pulse signal.The problem of the complex circuit of having avoided power line and holding wire to separate being caused, wiring trouble, and saved manufacturing cost.
4, receiving node 4 is formed certain topological structure by DC power line 3, as the linear pattern of Fig. 1, as the tree type of Fig. 2, or is both mixing, its role is to receive voltage pulse signal and decoding control controlled object 5.Comprise Programmable Logic Controller 41 and charge-discharge modules 42, with reference to Fig. 6, Fig. 7.Programmable Logic Controller 41 is that decoding obtains control signal from voltage pulse signal, and controlled object 5 is controlled.Its data input pin I/O mouth directly or indirectly is connected with DC power line 3, and output is connected with controlled object 5 by control line.If the amplitude of voltage pulse signal is within the I/O of Programmable Logic Controller 41 mouth operating voltage range, then DC power line 3 connections can directly be connected with the I/O mouth.Otherwise DC power line 3 need could be connected with the I/O mouth after overvoltage processing module 44 is handled.Innovative point of the present invention is that power supply and data can transmits together by DC power line 3, and just the need of work power supply of programmable controller 41 and/or controlled object 5 is powered and can be obtained from DC power line 3.But, could obtain stable direct current supply after therefore need handling to this signal because the signal of DC power line 3 transmission is voltage pulse signals.Charge-discharge modules 42 is converted to direct current stably with voltage pulse signal exactly, and its input is connected with DC power line 3, and its output is connected with the power input of Programmable Logic Controller 41.The main element of described charge-discharge modules 42 is an electric capacity, because Programmable Logic Controller 41 needs lasting power supply, in case stop to cause the confusion of system, therefore to voltage pulse signal and electric capacity, certain requirement is arranged, as the frequency of voltage pulse signal and the capacity of electric capacity etc., in system design process, to consider both cooperations, to satisfy the demand of the lasting power supply of Programmable Logic Controller 41 needs.Between electric capacity and DC power line 3, generally also be in series with single-way switch,, prevent that electric capacity charging back is to DC power line 3 discharges, the voltage pulse signal of interference DC power line 3 as diode.If the operating voltage of Programmable Logic Controller 41 and/or controlled object 5 and the amplitude of voltage pulse signal do not match, then need add power supply conversion module 43 between the power input of charge-discharge modules 42 and Programmable Logic Controller 41 and/or controlled object 5, this module can adopt the integrated regulator of 78 series to form.If the power of controlled object 5 is bigger certainly, can adds power supply in addition it is powered, with reference to Fig. 7.
Above-mentioned DC power line carrier communication system can be applicable in the control of lamp string, transmitting terminal 1 output is connected with on/off controlled module 2 inputs, on/off controlled module 2 outputs are connected with DC power line 3, receiving node 4 is formed certain topological structure by DC power line 3, and the controlling object 5 that is connected with receiving node 4 control signal output ends is the lamp string; Transmitting terminal 1 produces the data-signal of control lamp string, this signal obtains to be loaded with accordingly the voltage pulse signal of data message through on/off controlled module 2, the DC power line 3 of two cores is transferred to receiving node 4 as transmission medium with this voltage pulse signal, 4 pairs of voltage pulse signals of receiving node are handled the back and are obtained necessary power supply and the data-signal of its work, and by this signal the lamp string are controlled.Describe the course of work of above-mentioned lamp string below in detail with embodiment.
With reference to Fig. 8 and Fig. 9, it is the single-chip microcomputer of AT89C2051 that the Programmable Logic Controller 11 of transmitting terminal 1 adopts model, adopts the RS232 consensus standard that data are encoded, as Fig. 8.The voltage magnitude of transmission voltage pulse signal is 5V.The P1 mouth of single-chip microcomputer is connected as data input device 12 with 8 bit keyboards, and controlled object 5 is 7 look LED lamp strings.Keyboard is corresponding as follows with 7 look LED action:
| Key position sequence number | 1 | 2 | 3 | 4 |
| Show Color | Red | Green | Blue | Red+green |
| Key position sequence number | 5 | 6 | 7 | 8 |
| Show Color | Red+blue | Green+blueness | White | Do not show |
Data-signal behind the coding obtains the voltage pulse signal that amplitude is 5V, power is bigger after on/off controlled module 2 is handled, this voltage pulse signal is by DC power line 3 transmission of two cores.
It is the single-chip microcomputer of AT89C2051 that the Programmable Logic Controller 41 of receiving node 4 also adopts model, according to the RS232 consensus standard voltage pulse signal is decoded.Because being complementary of the supply power voltage of the amplitude of voltage pulse signal and LED lamp string, single-chip microcomputer and the operating voltage of I/O mouth, therefore the power input of LED lamp string and single-chip microcomputer only needs shunt capacitance can link to each other with DC power line 3 behind the series diode again, and the I/O mouth of while single-chip microcomputer directly links to each other with power line and gets final product.The control output end mouth of single-chip microcomputer links to each other with LED lamp string control end, controls its switch and change in color.
Method and system of the present invention is to be transmission medium with DC power line 3, and the characteristic of direct current has determined the reliable anti-interference of entire system; In carrier wave power supply power and power line attenuation characteristic, there is not the restriction of load and transmission range; The multiregion that the direct voltage amplitude all is suitable for from 1.8V to 120V; The frequency of utilizing communication protocol agreement is controlled the break-make of power supply with the transmission data, and technology is easy to realization; Realizing the module that minimizes of carrier wave, to take size little, and installation and maintenance is convenient, greatly reduces system cost, can be widely used in light, lamp decoration, household electrical appliance, controls such as medicine equipment.
Claims (8)
1. DC power line carrier communication system, it is characterized in that comprising the transmitting terminal (1) that produces data-signal, produce the on/off controlled module (2) of the voltage pulse signal that is loaded with data message accordingly according to input data signal control on/off, the receiving node (4) of two core DC power lines (3) of transmission voltage pulse signal and reception voltage pulse signal and decoding control controlled object (5), transmitting terminal (1) output is connected with on/off controlled module (2) input, on/off controlled module (2) output is connected with DC power line (3), and receiving node (4) is formed certain topological structure by DC power line (3).
2. a kind of DC power line carrier communication method according to claim 1, the transmitting terminal (1) that it is characterized in that the DC power line carrier communication system produces data-signal, this signal obtains to be loaded with accordingly the voltage pulse signal of data message through on/off controlled module (2), the DC power line of two cores (3) is transferred to receiving node (4) as transmission medium with this voltage pulse signal, and receiving node (4) is handled the back to voltage pulse signal and obtained necessary power supply of its work and the data-signal that controlled object (5) is controlled.
3. a kind of DC power line carrier communication according to claim 1 system is characterized in that transmitting terminal (1) comprises Programmable Logic Controller (11), and its input is connected with data input device (12); Programmable Logic Controller (12) is transferred to on/off controlled module (2) with obtaining data-signal after the digital coding through output.
4. a kind of DC power line carrier communication according to claim 1 system, it is characterized in that on/off controlled module (2) is made up of the drive circuit (21) and the switching circuit (22) of cascade, drive circuit (21) input is connected with transmitting terminal (1) output, and switching circuit (22) output is connected with DC power line (3).
5. a kind of DC power line carrier communication according to claim 1 system is characterized in that receiving node (4) comprises Programmable Logic Controller (41) and charge-discharge modules (42); The data input pin of Programmable Logic Controller (41) directly or indirectly is connected with DC power line (3); Charge-discharge modules (42) input is connected with DC power line (3), and its output is connected with the power input of Programmable Logic Controller (41) and/or controlled object (5); Programmable Logic Controller (41) output is connected with controlled object (5) by control line.
6. a kind of DC power line carrier communication according to claim 5 system is characterized in that also being connected with power supply conversion module (43) between the power input of charge-discharge modules (42) output and Programmable Logic Controller (41) and/or controlled object (5).
7. a kind of DC power line carrier communication according to claim 5 system is characterized in that the data input pin of Programmable Logic Controller (41) is connected with DC power line (3) by voltage processing module (44).
8. use a kind of lamp string of above-mentioned DC power line carrier communication system, it is characterized in that transmitting terminal (1) output is connected with on/off controlled module (2) input, on/off controlled module (2) output is connected with DC power line (3), receiving node (4) is formed certain topological structure by DC power line (3), and the controlling object (5) that is connected with receiving node (4) control signal output ends is LED; Transmitting terminal (1) produces the data-signal of control LED, this signal obtains to be loaded with accordingly the voltage pulse signal of data message through on/off controlled module (2), the DC power line of two cores (3) is transferred to receiving node (4) as transmission medium with this voltage pulse signal, receiving node (4) is handled the back to voltage pulse signal and is obtained necessary power supply and the data-signal of its work, and by this signal LED is controlled.
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| CN200610033135.3A CN101009501A (en) | 2006-01-24 | 2006-01-24 | A DC power line carrier communication method, system and lamp series using the system |
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|---|---|---|---|
| CN200610033135.3A CN101009501A (en) | 2006-01-24 | 2006-01-24 | A DC power line carrier communication method, system and lamp series using the system |
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| CN102648587A (en) * | 2009-08-06 | 2012-08-22 | 住友电气工业株式会社 | Power line communication device, power supply circuit with communication function, electrical appliance, and control-monitoring system |
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