CN101075827A - Digital information transmitting system based on power circuit - Google Patents
Digital information transmitting system based on power circuit Download PDFInfo
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- CN101075827A CN101075827A CN 200710130251 CN200710130251A CN101075827A CN 101075827 A CN101075827 A CN 101075827A CN 200710130251 CN200710130251 CN 200710130251 CN 200710130251 A CN200710130251 A CN 200710130251A CN 101075827 A CN101075827 A CN 101075827A
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Abstract
The invention comprises: one or more MCU codec and a transceiver module. Said MCU codec is wiredly connected to the transceiver module. There are also other two connection wires on the transceiver module, both of said two wires are connected each other in parallel. The amount of the MCU codec is more than 1, and the amount of the transceiver module is more than one.
Description
Technical field
The present invention relates to a kind of transmission of Information mode, mainly be with power line as transmission medium, information is modulated on the power line, by power line message transmission is gone out, more particularly, the present invention is a kind of digital carrier system based on power circuit.In International Patent Classification (IPC), the present invention should be divided into H portion.
Background technology
At present, because the appearance of network intelligence household electrical appliances has proposed new requirement to the control transmission mode.Electric control and the Network Transmission aspect of being in communicates with microwave and wired mode and main frame now.Wired mode needs additionally to lay again the light current control line usually with the control of realization to electrical equipment, because rewiring, signal stabilization, but installation is complicated, the cost height, and long in time limit, also there is certain potential safety hazard, the only suitable new user that fits up.Wireless mode mainly adopts wireless radio-frequency, need not rewiring, utilize point-to-point radio-frequency technique, realize control to electrical equipment, than being easier to, but systemic-function a little less than, control mode is more single, disturbed by various factors, less stable.
Summary of the invention
The objective of the invention is to: at the deficiency of prior art, provide a kind of brand-new need not rewiring, install fairly simple, can be plug and play, that can constantly upgrade, a kind of digital carrier system that function ratio is more powerful based on power circuit.
The objective of the invention is to be achieved through the following technical solutions:
Described digital carrier system comprises microcontroller (MCU) decoding/coding module and reception/transmitter module.
Described microcontroller (MCU) decoding/coding module is connected with described reception/transmitter module by line.
Also have two lines on described reception/transmitter module in addition, above-mentioned two lines of all reception/transmitter modules are connected in parallel mutually.
Quantity 〉=1 of described microcontroller (MCU) decoding/coding module, the quantity of described reception/transmitter module 〉=1.
The quantity of described microcontroller (MCU) decoding/coding module is 5, and the quantity of described reception/transmitter module is 5.
Described microcontroller (MCU) decoding/coding module comprises: first microcontroller (MCU) decoding/coding module, second microcontroller (MCU) decoding/coding module, the 3rd microcontroller (MCU) decoding/coding module, the 4th microcontroller (MCU) decoding/coding module and the 5th microcontroller (MCU) decoding/coding module.
Described reception/transmitter module comprises: the first reception/transmitter module, the second reception/transmitter module, the 3rd reception/transmitter module, the 4th reception/transmitter module and the 5th reception/transmitter module.
Described first microcontroller (MCU) decoding/coding module is connected with the described first reception/transmitter module by line.
Described second microcontroller (MCU) decoding/coding module is connected with the described second reception/transmitter module by line.
Described the 3rd microcontroller (MCU) decoding/coding module is connected with described the 3rd reception/transmitter module by line.
Described the 4th microcontroller (MCU) decoding/coding module is connected with described the 4th reception/transmitter module by line.
Described the 5th microcontroller (MCU) decoding/coding module is connected with described the 5th reception/transmitter module by line.
The described first reception/transmitter module to the, five reception/transmitter modules also have the two other line respectively, and above-mentioned two lines are parallel with one another.
Described reception/transmitter module comprises: chip LM1893 and microcontroller.
The 1st pin of described chip LM1893 connects an end of capacitor C 1, and its 2nd pin connects the other end of capacitor C 1; The end of its 3rd pin connecting resistance R1, an end of another termination capacitor C 2 of resistance R 1, the 4th pin of the described chip LM1893 of another termination of capacitor C 2.The 5th pin of described chip LM1893 connects the P1.0 pin of described microcontroller.The 6th pin of described chip LM1893 connects an end of capacitor C 3, another termination GND of capacitor C 3, and its 7th pin connects an end of resistance R 2, an end of another termination capacitor C 4 of resistance R 2, another termination GND of capacitor C 4.The 8th pin of described chip LM1893 links to each other with the 9th pin short circuit.The anodal ground connection simultaneously of diode D1 and D2, its negative pole all connects the 10th pin of described chip LM1893 and an end of resistance R 3, one end of T1 level of another termination transformer of resistance R 3 and an end of capacitor C 6, the other end of capacitor C 6 connects the other end of T1 level of transformer, the positive pole and the power supply V+ of capacitor C 5, another termination GND of capacitor C 5 respectively.The elementary end of one termination transformer T1 of capacitor C 7, the end of its another termination 220V, the other end of another termination 220V that transformer T1 is elementary.The 11st pin of the described chip LM1893 of one termination of resistance R 4 and an end of resistance R 5, another termination power V+ of resistance R 4.The 12nd pin of the described chip LM1893 of another termination of resistance R 5 and the RX pin of microcontroller.The 13rd pin of the described chip LM1893 of one termination of capacitor C 8, its other end meets the 14th pin and the GND of described chip LM1893 respectively.The 15th pin of described chip LM1893 meets power supply V+.The 16th pin of the described chip LM1893 of one termination of described capacitor C 9, its another termination GND.The 17th pin of described chip LM1893 connects the TX pin of described microcontroller.The 18th pin of the described chip LM1893 of one termination of resistance R 6, the end of its another termination swept resistance R7, the sliding end of described swept resistance R7 connects the other end and the GND of swept resistance R7.
Because the present invention has adopted above-mentioned technical scheme, directly utilize power line as signal transmission and control bus, to respectively transmit and receive module by power line couples together, link to each other with microcontroller (MCU) and transmit and receive module, realize control by microcontroller, the realization power line is conversed mutually, need not connect up, and is quick for installation.Controller is inserted on the socket in a room, presses button and send such as switch deepening, signal such as brighten, signal is propagated by electric wire, and other room just can receive instruction and produce corresponding action.256 different addresses can be arranged at most, can constantly expand upgrading, need match product according to the user as playing with building blocks.
Description of drawings
The present invention will be described below in conjunction with accompanying drawing, wherein:
Accompanying drawing 1 is the circuit block diagram of one embodiment of the invention.
Accompanying drawing 2 is the schematic diagram of reception/transmitter module of the present invention.
Can see that from the circuit block diagram of accompanying drawing 1 embodiment have five microcontrollers (MCU) decoding/coding module in this embodiment, reception/transmitter module also is five.And accompanying drawing 2 and provided the detailed schematic diagram of reception/transmitter module.
Embodiment
The present invention is further described below in conjunction with drawings and Examples, wherein:
Accompanying drawing 1 is the circuit block diagram of a most preferred embodiment of the present invention.
Can see that in this accompanying drawing microcontroller (MCU) decoding/coding module comprises: first microcontroller (MCU) decoding/coding module, second microcontroller (MCU) decoding/coding module, the 3rd microcontroller (MCU) decoding/coding module, the 4th microcontroller (MCU) decoding/coding module and the 5th microcontroller (MCU) decoding/coding module.Reception/transmitter module comprises: the first reception/transmitter module, the second reception/transmitter module, the 3rd reception/transmitter module, the 4th reception/transmitter module and the 5th reception/transmitter module.Described first microcontroller (MCU) decoding/coding module is connected with the described first reception/transmitter module by line.Described second microcontroller (MCU) decoding/coding module is connected with the described second reception/transmitter module by line.Described the 3rd microcontroller (MCU) decoding/coding module is connected with described the 3rd reception/transmitter module by line.Described the 4th microcontroller (MCU) decoding/coding module is connected with described the 4th reception/transmitter module by line.Described the 5th microcontroller (MCU) decoding/coding module is connected with described the 5th reception/transmitter module by line.The described first reception/transmitter module to the, five reception/transmitter modules also have the two other line respectively, and above-mentioned two lines are parallel with one another.
In the digital carrier system of power circuit, three mode of operations are arranged: emission a plurality of receptions, the single reception of a plurality of emission, a plurality of reception of emission and two kinds of patterns of the single reception of a plurality of emission exist simultaneously.That is to say that preceding two kinds of patterns can be distinguished separately as a system works, also can exist simultaneously in the same system as pattern work in the 3rd.When being in the mode of operation of a plurality of receptions of emission, refer to have a concentrated unit, it is exactly transmitter unit, all instructions all are to send out from transmitter unit, send receiving element to by power carrier, define the address again at receiving element, send address and then transmitting control commands or data message during transmission earlier.In last drawing system, after writing address and data message by first microcontroller (MCU) decoding/coding module, send the address earlier by the first reception/transmitter module and send data message again, other reception/transmitter module at first all goes receiver address information by bus then, whether then compare is the address of oneself, if the address of oneself is accepted data or instruction downwards, if not the transmission of then waiting for next address.
And be in one when receiving a plurality of emissions (the single reception of a plurality of emissions), and refer to have a concentrated unit, be exactly receiving element, receive the data message that all send over from transmitter unit, by sending receiving element to by power carrier.At first define same address, define equipment and data message separately then, send the address earlier by each transmitter unit, and then send equipment or data message separately at each transmitter unit.In last drawing system, by second, third, the 4th, the 5th microcontroller (MCU) decoding/coding module writes identical address, then write the information and the corresponding data message of equipment separately, send by corresponding reception/transmitter module then, after the first reception/transmitter module is received information by bus interface, by the various instructions that in first microcontroller (MCU) decoding/coding module, write in advance, judge the situation that each terminal is current.
When emission a plurality of receptions and one receive two kinds of patterns of a plurality of emissions and exist in the same system, when just being in the third mode of operation, refer to have a concentrated unit, this centralized unit be transmitter unit be again receiving element, each reception/transmitter module can be controlled it by microcontroller (MCU) decoding/coding module and transmit and receive state, a module not only can be used as receiver module but also can be used as transmitter module, is the integrated application to two kinds of patterns.In last drawing system, by first microcontroller (MCU) decoding/coding module control, the first reception/transmitter module is transmitter module, behind its transmission address and data message, be receiver module by first microcontroller (MCU) decoding/coding module control, the first reception/transmitter module again, wait for the response of other reception/transmitter module, other reception/transmitter module is under the control of microcontroller (MCU) decoding/coding module separately, make it all be in accepting state, by bus receiver address information at first, whether then compare is the address of oneself, if the address of oneself is accepted data or instruction downwards, and then control it by its microcontroller (MCU) decoding/coding module and be in emission state, send own state information to the first reception/transmitter module, wait for then that if not the address of oneself address of the first reception/transmitter module sends next time.After the first reception/transmitter module received the response of other module, the data message that will carry out next time sent, if do not receive the response of other module, after the wait regular hour, will repeat to send the data message of last time, up to producing response.
Under various mode of operation emission states.When sending data " 1 ", all be to produce 122.8KHz frequency square wave, all be to produce 131.64KHz frequency square wave when sending data " 0 ", by the square-wave frequency modulation of these frequencies to power line, make it on power line, to produce 122.8KHz and two kinds of frequency band waveforms of 131.64KHz.At an end of modulation (receptions), judge that by the frequency of detection frequency band what send is " 1 " or " 0 ".
Accompanying drawing 2 is the schematic diagram of the reception/transmitter module of most preferred embodiment of the present invention.Provided the detail circuits annexation among the figure.The core circuit of described reception/transmitter module is chip LM1893 and microcontroller.Its concrete annexation is: the 1st pin of described chip LM1893 connects an end of capacitor C 1, and its 2nd pin connects the other end of capacitor C 1, and the effect of capacitor C 1 is the frequency that is used for determining power carrier.The end of its 3rd pin connecting resistance R1, an end of another termination capacitor C 2 of resistance R 1, the 4th pin of the described chip LM1893 of another termination of capacitor C 2, resistance R 1 and capacitor C 2 are filter circuit.The 5th pin of described chip LM1893 connects the P1.0 pin of described microcontroller.The 6th pin of described chip LM1893 connects an end of capacitor C 3, another termination GND of capacitor C 3, its the 7th pin connects an end of resistance R 2, one end of another termination capacitor C 4 of resistance R 2, another termination GND of capacitor C 4, the effect of capacitor C 3 is for the 6th pin provides offset voltage, and resistance R 2 and capacitor C 4 constitute the RC series loop, to strengthen the stability of automatic level control circuit.The 8th pin of described chip LM1893 links to each other with the 9th pin short circuit.The anodal ground connection simultaneously of diode D1 and D2, its negative pole all connects the 10th pin of described chip LM1893 and an end of resistance R 3, one end of T1 level of another termination transformer of resistance R 3 and an end of capacitor C 6, the other end of capacitor C 6 connects the other end of T1 level of transformer, the positive pole and the power supply V+ of capacitor C 5 respectively, another termination GND of capacitor C 5, described diode D1 and D2 play pressure stabilization function, capacitor C 5 is a low frequency filtering electric capacity, improve circuit performance, resistance R 3 is a current-limiting resistance, prevents that electric current is excessive.The elementary end of one termination transformer T1 of capacitor C 7, the end of its another termination 220V, the other end of another termination 220V that transformer T1 is elementary.The function of transformer T1, capacitor C 6 and C7 is divided into two parts, when this chip is in emission mode, the signal of this chip internal after resistance R 3, constitutes frequency-selecting resonant network by transformer T1 and capacitor C6 by its 10th pin, and C7 sends in the power line through the high pressure coupling capacitance; When this chip is in receiving mode, high pressure coupling capacitance C7 and transformer T1 form the high-pass filtering loop, receive the signal that sends from power line, and transformer T1 and capacitor C 6 constitute the shunt-resonant circuit, after signal carried out frequency-selecting, enter the 10th pin of this chip through resistance R 3.The 11st pin of the described chip LM1893 of one termination of resistance R 4 and an end of resistance R 5, another termination power V+ of resistance R 4, resistance R 4 main effects are to provide a reference voltage for this chip.The 12nd pin of the described chip LM1893 of another termination of resistance R 5 and the RX pin of microcontroller, the effect of resistance R 5 are to draw voltage for transfer of data provides on one.The 13rd pin of the described chip LM1893 of one termination of capacitor C 8, its other end meets the 14th pin and the GND of described chip LM1893 respectively, and capacitor C 8 is a burst pulse noise removing electric capacity, and its effect is that the burr on the signal that demodulates of filtering disturbs.The 15th pin of described chip LM1893 meets power supply V+.The 16th pin of the described chip LM1893 of one termination of described capacitor C 9, its another termination GND, the effect of capacitor C 9 is to constitute the limit filtration device, carries out limit filtration.The 17th pin of described chip LM1893 connects the TX pin of described microcontroller.The 18th pin of the described chip LM1893 of one termination of resistance R 6, the end of its another termination swept resistance R7, the sliding end of described swept resistance R7 connects the other end and the GND of swept resistance R7, resistance R 6 and its effect of swept resistance R7 are the frequencies of coming control generator by Control current, by adjusting, can carry out corresponding fine setting to the frequency of oscillator to swept resistance R7.
In this system, what transmitter module and receiver module used all is same circuit.It transmits and receives the 5th pin TX/RX SELECT decision of the conversion of state by chip LM1893.When it was in high level state " 1 ", this module was a transmitter module, and when it was in low level state " 0 ", this module was a receiver module.Alternating current 220V voltage is by capacitor C 7 and twice isolation of transformer T1, the forceful electric power signal is converted into weak electric signal, by R3 signal is sent among the chip LM1893, at its chip internal, can discern the carrier wave of the different frequency that the outside sends automatically, if what transmit is the carrier wave of 122.8KHz frequency, produce a high level " 1 " at chip internal so; If what transmit is the carrier wave of 131.64KHz frequency, then produce a low level " 0 " at chip internal.The external subcarrier frequency constantly changes between 122.8KHz and two frequencies of 131.64KHz, corresponding will be in a string data of being made up of " 0 " or " 1 " of the inner generation of chip LM1893,12 pin TX by chip LM1893, will send set of number information with the form of serial ports, at this moment, (MCU) receives by microcontroller, receives after the digital information by carrying out the instruction of microcontroller internal composition, thereby carries out the control corresponding action.
When chip LM1893 uses as transmitter module, its 5 pin is high level " 1 ", at this moment all information is all sended over by microcontroller (MCU), by microcontroller (MCU) is write different instructions, make it send different control informations, this control information sends to chip LM1893 by the serial ports of microcontroller (MCU), chip LM1893 receives by its 17 pin RX, judge that then these data are " 0 " or " 1 ", if " 0 ", then, see off, utilize transformer T1 that 220V low pressure forceful electric power is coupled in its amplification and get on by these chip 10 human hair combing wastes in the inner pulse that produces a string 131.64KHz frequency of chip LM1893; If " 1 " in the inner pulse that produces a string 122.8KHz frequency of chip LM1893, equally also is to see off by these chip 10 human hair combing wastes then, utilizes transformer T1 that 220V low pressure forceful electric power is coupled in its amplification and get on.Utilize chip LM1893 receiver module to carry out receiving demodulation at the other end.
In a word, structure of the present invention is simple relatively, installs easily, and range of application is wide, can constantly expand upgrading, need match product as playing with building blocks according to the user, therefore is beneficial to and promotes the use of.
Claims (4)
1. digital carrier system based on power circuit is characterized in that:
Described digital carrier system comprises microcontroller (MCU) decoding/coding module and reception/transmitter module;
Described microcontroller (MCU) decoding/coding module is connected with described reception/transmitter module by line;
Also have two lines on described reception/transmitter module in addition, above-mentioned two lines of all reception/transmitter modules are connected in parallel mutually.
2. digital carrier system according to claim 1 is characterized in that:
Quantity 〉=1 of described microcontroller (MCU) decoding/coding module, the quantity of described reception/transmitter module 〉=1.
3. digital carrier system according to claim 1 and 2 is characterized in that:
The quantity of described microcontroller (MCU) decoding/coding module is 5, and the quantity of described reception/transmitter module is 5;
Described microcontroller (MCU) decoding/coding module comprises: first microcontroller (MCU) decoding/coding module, second microcontroller (MCU) decoding/coding module, the 3rd microcontroller (MCU) decoding/coding module, the 4th microcontroller (MCU) decoding/coding module and the 5th microcontroller (MCU) decoding/coding module;
Described reception/transmitter module comprises: the first reception/transmitter module, the second reception/transmitter module, the 3rd reception/transmitter module, the 4th reception/transmitter module and the 5th reception/transmitter module;
Described first microcontroller (MCU) decoding/coding module is connected with the described first reception/transmitter module by line,
Described second microcontroller (MCU) decoding/coding module is connected with the described second reception/transmitter module by line,
Described the 3rd microcontroller (MCU) decoding/coding module is connected with described the 3rd reception/transmitter module by line,
Described the 4th microcontroller (MCU) decoding/coding module is connected with described the 4th reception/transmitter module by line,
Described the 5th microcontroller (MCU) decoding/coding module is connected with described the 5th reception/transmitter module by line;
The described first reception/transmitter module to the, five reception/transmitter modules also have the two other line respectively, and above-mentioned two lines are parallel with one another.
4. digital carrier system according to claim 1 is characterized in that:
Described reception/transmitter module comprises: chip LM1893 and microcontroller;
The 1st pin of described chip LM1893 connects an end of capacitor C 1, and its 2nd pin connects the other end of capacitor C 1; The end of its 3rd pin connecting resistance R1, an end of another termination capacitor C 2 of resistance R 1, the 4th pin of the described chip LM1893 of another termination of capacitor C 2; The 5th pin of described chip LM1893 connects the P1.0 pin of described microcontroller; The 6th pin of described chip LM1893 connects an end of capacitor C 3, another termination GND of capacitor C 3, the end of its 7th pin connecting resistance R2, an end of another termination capacitor C 4 of resistance R 2, another termination GND of capacitor C 4; The 8th pin of described chip LM1893 links to each other with the 9th pin short circuit; The anodal ground connection simultaneously of diode D1 and D2, its negative pole all connects the 10th pin of described chip LM1893 and an end of resistance R 3, one end of T1 level of another termination transformer of resistance R 3 and an end of capacitor C 6, the other end of capacitor C 6 connects the other end of T1 level of transformer, the positive pole and the power supply V+ of capacitor C 5, another termination GND of capacitor C 5 respectively; The elementary end of one termination transformer T1 of capacitor C 7, the end of its another termination 220V, the other end of another termination 220V that transformer T1 is elementary; The 11st pin of the described chip LM1893 of one termination of resistance R 4 and an end of resistance R 5, another termination power V+ of resistance R 4; The 12nd pin of the described chip LM1893 of another termination of resistance R 5 and the RX pin of microcontroller; The 13rd pin of the described chip LM1893 of one termination of capacitor C 8, its other end meets the 14th pin and the GND of described chip LM1893 respectively; The 15th pin of described chip LM1893 meets power supply V+; The 16th pin of the described chip LM1893 of one termination of described capacitor C 9, its another termination GND; The 17th pin of described chip LM1893 connects the TX pin of described microcontroller; The 18th pin of the described chip LM1893 of one termination of resistance R 6, the end of its another termination swept resistance R7, the sliding end of described swept resistance R7 connects the other end and the GND of swept resistance R7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710130251 CN101075827A (en) | 2007-07-18 | 2007-07-18 | Digital information transmitting system based on power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710130251 CN101075827A (en) | 2007-07-18 | 2007-07-18 | Digital information transmitting system based on power circuit |
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| CN101075827A true CN101075827A (en) | 2007-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200710130251 Pending CN101075827A (en) | 2007-07-18 | 2007-07-18 | Digital information transmitting system based on power circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102223159A (en) * | 2011-04-27 | 2011-10-19 | 广东广视通科教设备有限公司 | Electric power communication system used for modern middle and primary school teaching experiments |
| CN105515615A (en) * | 2016-01-12 | 2016-04-20 | 浙江共同电子科技有限公司 | Power line carrier communication method |
-
2007
- 2007-07-18 CN CN 200710130251 patent/CN101075827A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102223159A (en) * | 2011-04-27 | 2011-10-19 | 广东广视通科教设备有限公司 | Electric power communication system used for modern middle and primary school teaching experiments |
| CN105515615A (en) * | 2016-01-12 | 2016-04-20 | 浙江共同电子科技有限公司 | Power line carrier communication method |
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Application publication date: 20071121 |