CN201369720Y - Master-slave-type DC carrier communication system - Google Patents
Master-slave-type DC carrier communication system Download PDFInfo
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- CN201369720Y CN201369720Y CNU2009200005090U CN200920000509U CN201369720Y CN 201369720 Y CN201369720 Y CN 201369720Y CN U2009200005090 U CNU2009200005090 U CN U2009200005090U CN 200920000509 U CN200920000509 U CN 200920000509U CN 201369720 Y CN201369720 Y CN 201369720Y
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Abstract
The utility model provides a master-slave-type DC carrier communication system consisting of a master machine, a slave machine and a signal bus, wherein the master machine can comprise a clock circuit, a power system, a communication interface and a control module and in particular can also comprise an electronic switch; the communication voltage output lead-out of the power system includes sending voltage output and reception voltage output which are respectively connected with two input ends of the electronic switch; under the control of a control signal, the electronic switch sends sending voltage or reception voltage to a communication voltage input end of the communication interface. The master machine can also comprise a clock circuit, a power system, a communication interface and a control module, wherein the power system provides communication voltage for the communication interface through two paths. The communication interface comprises a data modulating module, a data demodulating module and an electronic switch. Under the control of the control signal, the electronic switch finishes switching the voltage output to the signal bus. Thereby, the signal-to-noise ratio of the data reception of the master machine and the accuracy of the communication are improved.
Description
Technical field
The utility model relates to the communications field, relates in particular to a kind of improvement to master-slave mode direct current carrier communication system.
Background technology
Provided the master-slave mode direct current carrier communication system nonpolarity differentiation of a kind of two-wire, that can when slave provides dc supply, carry out single worker's bidirectional data transfers at main frame in the patent application document 200810172410.9, the design of having simplified main frame and slave be connected, it is applicable to such as similar small-sized slave systems such as electric detonator networking, intelligent sensing networkings.
In the technique scheme, the host power supply system provides communication voltage by the communication voltage output end to host communication interface, realizes the data interaction that main frame and slave are undertaken by signal bus.Because the host power supply system only provides one road voltage to host communication interface, therefore, main frame is when sending data or receive the data that slave sends to slave, and the voltage on the bus maintains communication voltage all the time.There is following defective in such technical scheme:
When main frame receives the data that certain slave sends with the form that consumes the main frame output current, because the voltage on the bus is higher than the voltage of storage capacitor in the energy-storage module of slave, therefore other slave in the networking still can be gone up makeup energy from the supply lines (bus) of main frame output, and this will form current noise on bus.The slave quantity that exists in the networking is many more, and the current noise that slave forms on bus is just big more.This has just reduced the signal to noise ratio of the electric current of expression data information, thereby influences the reliability of main frame reception from machine information.
Summary of the invention
The purpose of this utility model is to improve the defective of above-mentioned prior art, provide a kind of by the master-slave mode direct current carrier communication system that main frame constituted that under different voltages, carries out data transmit-receive, signal to noise ratio when being intended to improve main frame and receiving from machine data, thus the communication accuracy of this master-slave mode direct current carrier communication system improved.
First kind of technical scheme of the present utility model can be described as:
This master-slave mode direct current carrier communication system is made up of a main frame, one or many slaves and the signal bus that connects main frame and slave.Wherein, slave is connected in parallel between the signal bus of being drawn by main frame.Main frame comprises host clock circuit, host power supply system, host communication interface and host computer control module.Wherein, the operating voltage output of host power supply system connects host clock circuit, host computer control module and host communication interface simultaneously; One end ground connection; Remaining end of host power supply system also leads to host communication interface, constitutes the communication voltage output end of host power supply system.One end of host communication interface connects host computer control module; One end ground connection; One end connects the operating voltage output; Also have an other end to lead to the host power supply system, constitute the communication voltage input end of host communication interface; The main frame outside is led at all the other two ends, constitutes two of signal bus.One end of host computer control module connects the host clock circuit; One end ground connection.
This technical scheme is improved on the basis of patent application document 200810172410.9, on the basis of original structure block diagram, main frame also comprises an electronic switch, and the output of the communication voltage of host power supply system leads to transmission voltage output independent of each other and receives voltage output.Two inputs of electronic switch are connected respectively to above-mentioned transmission voltage output end and receive voltage output end; The output of electronic switch is connected to the communication voltage input end of host communication interface; The control end of electronic switch links to each other with all the other of a host computer control module end.
Electronic switch in the technique scheme under the control of host computer control module, is finished sending the switching of voltage and reception voltage.When main frame when slave sends data, host computer control module sends the control signal of expressing the output of transmission voltage to the control end of electronic switch, make electronic switch be connected to the branch road conducting of described transmission voltage output end, the communication voltage input end of host communication interface promptly is connected to the transmission voltage output end of host power supply system, promptly shows as transmission voltage on the signal bus.Vice versa.This has just realized sending voltage and has received separating of voltage, for technical foundation has been established in the raising of communication accuracy.
Second kind of technical scheme of the present utility model can be described as:
This master-slave mode direct current carrier communication system is made up of a main frame, one or many slaves and the signal bus that connects main frame and slave.Wherein, slave is connected in parallel between the signal bus of being drawn by main frame.Main frame comprises host clock circuit, host power supply system, host communication interface and host computer control module.Wherein, the operating voltage output of host power supply system connects host clock circuit, host computer control module and host communication interface simultaneously; The host power supply system is also connected to host communication interface, constitutes the communication voltage output end of host power supply system; All the other end ground connection.Host communication interface one end connects host computer control module; One end ground connection; One end connects the operating voltage output; Also have two ends to lead to the main frame outside, constitute two of signal bus; Remaining end is connected to the communication voltage output end of host power supply system, constitutes the communication voltage input end of host communication interface.One end of host computer control module connects the host clock circuit; One end ground connection.
This technical scheme is improved on the basis of patent application document 200810172410.9, and the communication voltage output end of host power supply system and the voltage input end of communicating by letter of host communication interface all are refined as two ends.Wherein, the transmission voltage output end in the communication voltage output end is connected to the transmission voltage input end of host communication interface; Reception voltage output end in the communication voltage output end is connected to the reception voltage input end of host communication interface.
Technique scheme has realized sending voltage and has received separating of voltage, for technical foundation has been established in the raising of communication accuracy.
Host communication interface in second kind of technical scheme further can comprise host data modulation module, host data demodulation module and electronic switch one.Wherein, an end of host data modulation module links to each other with the host data demodulation module, and is connected to the operating voltage output of host power supply system jointly; The host data modulation module also with host data demodulation module common ground.One end of host data modulation module connects the transmission voltage output end, constitutes the transmission voltage input end of host communication interface; The host data modulation module also has an end to link to each other with host computer control module; All the other two ends of host data modulation module, input one, one end that an end connects electronic switch one leads to the host communication interface outside, constitutes of signal bus.One end of host data demodulation module connects host computer control module; One end connects the reception voltage output end of host power supply system, constitutes the reception voltage input end of host communication interface; All the other ends of host data demodulation module connect the input two of electronic switch one.The output of electronic switch one leads to the host communication interface outside, constitutes another root of signal bus; The control end of electronic switch one links to each other with host computer control module.
The transmission voltage output end of host power supply system is directly connected to the host data modulation module in this technical scheme, receive voltage output end and be directly connected to the host data demodulation module, and electronic switch is finished outputing to the switching of the voltage on the signal bus under the control of host computer control module.When main frame when slave sends data, host computer control module sends to the control end of electronic switch and expresses the control signal that sends voltage output, makes electronic switch be connected to the branch road conducting of host data modulation module, promptly shows as transmission voltage on the signal bus.Vice versa.Similarly realized sending voltage and received separating of voltage, for technical foundation has been established in the raising of communication accuracy.
The preferred version of above-mentioned two kinds of technical schemes is, will receive voltage and obtain and be lower than transmission voltage.Benefit is:
When main frame at non-communications status with when sending data mode, main frame export higher transmission voltage on signal bus, use energy for the energy-storage module of slave inside provides to charge.And when main frame will receive the data of slave transmission, if main frame is the higher transmission voltage of output on signal bus still, the energy-storage module of slave inside will continue to obtain the charging energy from signal bus, this will form current noise on bus, thus the signal to noise ratio when reducing host receiving data.Otherwise, when main frame receives the data of slave transmission, reduce the voltage that main frame is exported on signal bus, make the voltage on the bus be lower than the voltage of the inner energy-storage module of slave, then all slaves in the networking will be by himself energy-storage module power supply to keep the work of self.This has just been avoided when host receiving data, all slaves obtain rechargeable energy and the current noise that forms from bus, thereby has improved the signal to noise ratio that slave sends data, has improved the reliability of host receiving data.
Host data modulation module in second kind of technical scheme of the utility model can be taken as unipolarity data-modulated module, and correspondingly, the host data demodulation module can be the unipolarity data demodulation module.Wherein, unipolarity data-modulated module comprises driver module and electronic switch two.One end of driver module connects the operating voltage output; One end connects host computer control module; One end links to each other with the control end of electronic switch two; Also has an end ground connection.Two inputs of electronic switch two, a ground connection, another and remaining end of driver module lead to unipolarity communication interface outside jointly, constitute the transmission voltage input end of unipolarity communication interface; The output of electronic switch two leads to unipolarity communication interface outside, is connected to the input one of electronic switch one.
Host data modulation module in second kind of technical scheme of the utility model also can be taken as bipolarity data-modulated module, and correspondingly, the host data demodulation module also can be the bipolarity data demodulation module.Wherein, bipolarity data-modulated module comprises two driver modules, two electronic switches and an inverter, is respectively driver module one, driver module two, electronic switch three and electronic switch four.Two driver modules and inverter are connected to the operating voltage output of host power supply system jointly; Two driver modules and inverter be common ground also; The signal input part of the signal input part of inverter and driver module two is connected to host computer control module jointly, and the signal output part of inverter is connected to the signal input part of driver module one; The signal output part of driver module two is connected to the control end of electronic switch four, and the signal output part of driver module one is connected to the control end of electronic switch three.All the other ends of an input of electronic switch three, an input of electronic switch four, driver module one and all the other ends of driver module two link together, and lead to bipolarity data-modulated module-external jointly, constitute the transmission voltage input end of bipolarity data-modulated module; Another input common ground of another input of electronic switch three and electronic switch four; The output of electronic switch three leads to bipolarity data-modulated module-external, constitutes of signal bus; The output of electronic switch four leads to bipolarity data-modulated module-external, is connected to the input one of electronic switch one.
Description of drawings
Fig. 1 is the networking connection diagram of the utility model master-slave mode direct current carrier communication system;
Fig. 2 is the basic comprising block diagram of main frame when the host power supply system links to each other with host communication interface by electronic switch in the utility model;
Fig. 3 is the basic comprising block diagram of main frame when the host power supply system directly links to each other with host communication interface in the utility model;
Fig. 4 is the basic comprising block diagram of host communication interface when the host power supply system directly links to each other with host communication interface in the utility model;
Fig. 5 is the formation block diagram of unipolarity communication interface when the host power supply system directly links to each other with host communication interface in the utility model;
Fig. 6 is the formation block diagram of bipolarity communication interface when the host power supply system directly links to each other with host communication interface in the utility model;
Fig. 7 is main frame voltage waveform view on the signal bus when slave sends the unipolarity instruction in the utility model;
Fig. 8 is main frame voltage waveform view on the signal bus when slave sends the single instruction of bipolarity in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the technical solution of the utility model is described in further details.
A kind of master-slave mode direct current carrier communication system is made up of a main frame 100, one or many slaves 200 and the signal bus 300 that connects main frame 100 and slave 200.Wherein, slave 200 is connected in parallel between the signal bus 300 of being drawn by main frame 100, as shown in Figure 1.
The utility model further improves on the basis of patent application document 200810172410.9, main frame 100 comprises host clock circuit 140, host power supply system 130, host communication interface 150, host computer control module 120 and electronic switch 121, as shown in Figure 2.
(1) host power supply system 130 1 end ground connection.The operating voltage output 31 of host power supply system 130 connects host clock circuit 140, host computer control module 120 and host communication interface 150 simultaneously, is used to these modules that the burning voltage of need of work is provided.All the other two ends of host power supply system 130 are the communication voltage output end, be refined as and send voltage output end 32 and receive voltage output end 33, be connected respectively to two inputs of electronic switch 121, export transmission voltage respectively and receive voltage to them, select by 121 pairs of voltages that output to host communication interface 150 of host computer control module 120 control electronic switches.
(2) host communication interface 150 1 end ground connection; One end connects host computer control module 120, carries out bidirectional data interaction with it; One end connects the operating voltage output 31 of host power supply system 130, receives the operating voltage that host power supply system 130 provides; Also have two ends to lead to main frame 100 outsides, constitute signal bus 300; Host communication interface 150 all the other ends are connected to the output of electronic switch 121, constitute the communication voltage input end 51 of host communication interface 150.When sending data, host communication interface 150 receives the data message that host computer control module 120 are sent, and these information are sent to slave with the form of change in voltage by signal bus 300; When receiving data, the data message of the formal representation that changes with electric current that host communication interface 150 extracts that slaves send from signal bus 300, and the information of extracting sent to host computer control module 120 for handling.
(3) two of electronic switch 121 inputs are connected respectively to the transmission voltage output end 32 of host power supply system 130 and receive voltage output end 33; The control end of electronic switch 121 connects host computer control module 120; Output connects the communication voltage input end 51 of host communication interface 150.Host computer control module 120 transmits control signal to electronic switch 121 according to the needs of data transmission or Data Receiving between principal and subordinate's machine.Electronic switch 120 is finished the switching to the voltage that outputs to host communication interface 150 under the control of host computer control module 120, thereby finishes outputing to the switching of the voltage on the signal bus 300.
(4) host computer control module 120 1 end ground connection; One end connects host clock circuit 140, and the clock signal of host computer control module 120 needs of work is provided by clock circuit 140; One end connects host communication interface 150, carries out data interaction with host communication interface; One end connects the control end of electronic switch 121, and 121 outputs of control electronic switch send voltage or receive voltage; All the other ends connect the operating voltage output 31 of host power supply system 130, receive the operating voltage of host power supply system 130 outputs.
(1) host power supply system 130 1 end ground connection.The operating voltage output 31 of host power supply system 130 connects host clock circuit 140, host computer control module 120 and host communication interface 151 simultaneously, and the burning voltage of its need of work is provided to these modules.All the other two ends of host power supply system 130 are the communication voltage output end, are refined as to send voltage output end 32 and receive voltage output end 33, are connected respectively to the transmission voltage input end 52 of host communication interface 151 and receive voltage input end 53.
(2) host communication interface 151 1 end ground connection; One end connects host computer control module 120, carries out data interaction with host computer control module 120; One end connects the operating voltage output 31 of host power supply system 130, receives the operating voltage of host power supply system 130 outputs; Also have two ends to lead to main frame 100 outsides, constitute signal bus 300; All the other two ends of host communication interface 151 are the communication voltage input end, are respectively to send voltage input end 52 and receive voltage input end 53, connect the transmission voltage output end 32 of host power supply system 130 respectively and receive voltage output end 33.When sending data, host communication interface 150 receives the data message that host computer control module 120 are sent, and these information are sent to slave with the form of change in voltage by signal bus 300; When receiving data, the data message of the formal representation that changes with electric current that host communication interface 150 extracts that slaves send from signal bus 300, and the information of extracting sent to host computer control module 120 for handling.
(3) host computer control module 120 1 end ground connection; One end connects host clock circuit 140, receives the work clock signal of host clock circuit 140 outputs; One end connects host communication interface 151, carries out data interaction with host communication interface 151; All the other ends connect the operating voltage output of host power supply system 130, by 130 power supplies of host power supply system.
(1) host data modulation module 1,511 one end ground connection; One end links to each other with host data demodulation module 1512, and is connected to the operating voltage output 31 of host power supply system 130 jointly, accepts the stable operating voltage of host power supply system 130 outputs.Host data modulation module 1511 also has an end to connect host computer control module 120, receives the data message of host computer control module 120 outputs.An end again of host data modulation module 1511 connects the transmission voltage output end 32 of host power supply system 130, constitutes the transmission voltage input end 52 of host communication interface 151, accepts the transmission voltage of host power supply system 130 outputs.All the other two ends of host data modulation module 1511: an end leads to host communication interface 151 outsides, constitutes of signal bus 300; The other end connects the input 1251 of electronic switch 125, provide transmission voltage branch road to electronic switch 125, when slave sent data, electronic switch 125 was selecting the transmission voltage of this branch road to output on the signal bus 300 under the control of host computer control module 120 at need.
(2) host data demodulation module 1,512 one end ground connection; One end links to each other with host computer control module 120, and the data message that receives is sent to host computer control module 120 for handling; One end connects the operating voltage output 31 of host power supply system 130, receives the operating voltage of host power supply system 130 outputs; One end connects the reception voltage output end 33 of host power supply system 130, constitutes the reception voltage input end 53 of host communication interface 151; All the other ends of host data demodulation module 1512 connect the input 1252 of electronic switch 125, provide reception voltage branch road to electronic switch 125, when slave received data, electronic switch 125 was selecting the reception voltage of this branch road to output on the signal bus 300 under the control of host computer control module 120 at need.
(3) input 1251 of electronic switch 125 is connected to host data modulation module 1511, and input 1252 is connected to host data demodulation module 1512, and output leads to host communication interface 151 outsides, constitutes another root of signal bus 300; The control end of electronic switch 125 links to each other with host computer control module 120.
The transmission voltage output end 32 of host power supply system 130 is directly connected to host data modulation module 1511 in the technical scheme shown in Figure 4, receive voltage output end 33 and be directly connected to host data demodulation module 1512, and electronic switch 125 is finished outputing to the switching of the voltage on the signal bus 300 under the control of host computer control module 120.When main frame 100 when slave 200 sends data, host computer control module 120 sends the control signal of expressing the output of transmission voltage to the control end of electronic switch 125, make electronic switch 125 be connected to the branch road conducting of host data modulation module 1511, promptly show as transmission voltage on the signal bus 300.Otherwise, when main frame 100 when slave 200 receives data, host computer control module 120 sends the control signal of expressing the output of reception voltage to the control end of electronic switch 125, make electronic switch 125 be connected to the branch road conducting of host data demodulation module 1512, promptly show as reception voltage on the signal bus 300.
The host communication interface 151 of execution mode shown in Figure 4 can be taken as unipolarity communication interface 152, comprises unipolarity data-modulated module 1521, unipolarity data demodulation module 1522 and electronic switch 125, as shown in Figure 5.Wherein, unipolarity data-modulated module 1521 comprises driver module 114 and electronic switch 126.Its concrete annexation is described below:
(1) end of driver module 114 connects the operating voltage output 31 of host power supply system 130, receives the operating voltage of host power supply system 130 outputs, for driver module 114 provides low limit driving voltage.The other end of driver module 114 connects host computer control module 120, receives the low-voltage control signal of host computer control module 120 outputs.Be converted to high voltage control signal behind the change action of this low-voltage control signal via driver module 114, an end again that is connected with electronic switch 126 by driver module 114 outputs to the control end of electronic switch 126, in order to the closing direction of control electronic switch 126.Driver module 114 also has an end ground connection.These module 114 remaining ends are connected to the reception voltage output end 32 of host power supply system 130.
(2) control end of electronic switch 126 is connected to the output of driver module 114 high voltage control signals, and output is connected to the input 1251 of unipolarity data-modulated module 1521 external electrical switches 125.Two inputs of electronic switch 126, a ground connection, another and driver module 114 lead to unipolarity communication interface 152 outsides jointly, are connected to the transmission voltage output end 32 of host power supply system 130, constitute the transmission voltage input end 52 of unipolarity communication interface 152.This transmission voltage input end 52 is used to receive the higher communication voltage that is offered unipolarity data-modulated module 1521 by host power supply system 130, and provides the flash driving voltage for driver module 114.
The host communication interface 151 of execution mode shown in Figure 4 also can be taken as bipolarity communication interface 153, comprises bipolarity data-modulated module 1531, bipolarity data demodulation module 1532 and electronic switch 125, as shown in Figure 6.Wherein, bipolarity data-modulated module 1531 comprises two driver modules 115 and 116, two electronic switches 127 and 128 and inverter 110.Its concrete annexation is described below:
(1) two driver module 115 and 116, be connected to host power supply system 130 jointly with inverter 110 31, two driver modules 115 of operating voltage output and 116 also with inverter 110 common grounds.
(2) signal input part of the signal input part of inverter 110 and driver module 116 is connected to host computer control module 120 jointly, and the signal output part of inverter 110 is connected to the signal input part of driver module 115.Host computer control module 120 outputs to the control signal of driver module 116, outputs to driver module 115 after oppositely.
(3) signal output part of driver module 115 is connected to the control end 1271 of electronic switch 127, and the signal output part of driver module 116 is connected to the control end 1281 of electronic switch 128.Driver module 115 is exported opposite high-level control signal with driver module 116 to two electronic switches 127 and 128.
(4) electronic switch 127 input, an input of electronic switch 128, all the other ends of driver module 115 and all the other ends of driver module 116 link together, and lead to the outside of bipolarity communication interface 153 jointly, be connected to the transmission voltage output end 32 of host power supply system, constitute the transmission voltage input end 52 of bipolarity communication interface 153.Another input common ground of another input of electronic switch 127 and electronic switch 128.
(5) two electronic switches 127 and 128 output lead to bipolarity data-modulated module 1531 outsides respectively.Wherein, the output of electronic switch 127 directly leads to host communication interface 153 outsides, constitutes of signal bus; The output of electronic switch 128 is connected to the input 1251 of electronic switch 125.
The execution mode that provides in the operation principle of above-mentioned unipolarity/bipolarity data-modulated module and unipolarity/bipolarity data demodulation module and the patent application document 200810172410.9 is consistent, repeats no more herein.
Fig. 7 has provided the main frame 100 in the utility model when slave 200 sends the unipolarity instruction, the voltage oscillogram on the signal bus 300.What no matter main frame sent to slave is global command or single instruction, and main frame 100 is sending voltage V
TXDAfter slave 200 sends instruction, all get back to state down to slave 200 chargings.
Fig. 8 has provided the main frame 100 in the utility model when slave 200 sends the single instruction of bipolarity, the voltage oscillogram on the signal bus 300.Main frame 100 is sending voltage V
TXDUnder send instruction after, promptly enter state, and continue default time span T, so that replenish the energy of the energy-storage module consumption of slave inside when receiving the data low level for slave to slave 200 makeup energy.Because of what send is single instruction at a certain slave, so after the energy-storage module of slave inside finished replenishing of energy, main frame 100 just switched to the voltage on the signal bus 300 reception voltage V
RXDWait for receiving the information that slave 200 returns, receive the rear and get back to the state that charges to slave.V among the figure
TXDBe the voltage that the transmission voltage output end 32 of host power supply system 130 is exported, V
RXDVoltage for reception voltage output end 33 output of host power supply system 130.If main frame 100 sends global command to slave 200, then main frame is directly got back to the state to the slave charging after sending instruction, does not carry out the reception of data.
Claims (6)
1. master-slave mode direct current carrier communication system is made up of a main frame, one or many slaves and the signal bus that connects described main frame and described slave, and described slave is connected in parallel between the described signal bus of being drawn by described main frame,
Described main frame comprises host clock circuit, host power supply system, host communication interface and host computer control module,
Described host power supply system one end ground connection; Its operating voltage output connects described host clock circuit, described host computer control module and described host communication interface simultaneously; Remaining end of described host power supply system also leads to described host communication interface, constitutes the communication voltage output end of described host power supply system;
One end of described host communication interface connects described host computer control module; One end ground connection; One end connects described operating voltage output; Also have an other end to lead to described host power supply system, constitute the communication voltage input end of described host communication interface; Described main frame outside is led at all the other two ends, constitutes two of described signal bus;
One end of described host computer control module connects described host clock circuit; One end ground connection;
It is characterized in that:
Described main frame also comprises an electronic switch; Described communication voltage output end is refined as and sends voltage output end and receive voltage output end,
Two inputs of described electronic switch are connected respectively to described transmission voltage output end and described reception voltage output end; The output of described electronic switch is connected to the described communication voltage input end of described host communication interface; The control end of described electronic switch links to each other with all the other of a described host computer control module end.
2. master-slave mode direct current carrier communication system is made up of a main frame, one or many slaves and the signal bus that connects described main frame and described slave, and described slave is connected in parallel between the described signal bus of being drawn by described main frame,
Described main frame comprises host clock circuit, host power supply system, host communication interface and host computer control module,
The operating voltage output of described host power supply system connects described host clock circuit, described host computer control module and described host communication interface simultaneously; Described host power supply system is also connected to described host communication interface, constitutes the communication voltage output end of described host power supply system; All the other end ground connection;
Described host communication interface one end connects described host computer control module; One end ground connection; One end connects described operating voltage output; Also have two ends to lead to described main frame outside, constitute two of described signal bus; Remaining end is connected to the described communication voltage output end of described host power supply system, constitutes the communication voltage input end of described host communication interface;
One end of described host computer control module connects described host clock circuit; One end ground connection;
It is characterized in that:
Described communication voltage output end all is refined as two ends with the described voltage input end of communicating by letter;
Transmission voltage output end in the described communication voltage output end is connected to the transmission voltage input end of described host communication interface; Reception voltage output end in the described communication voltage output end is connected to the reception voltage input end of described host communication interface.
3. according to the described communication system of claim 2, it is characterized in that:
Described host communication interface comprises host data modulation module, host data demodulation module and electronic switch one,
One end of described host data modulation module links to each other with described host data demodulation module, and is connected to the described operating voltage output of described host power supply system jointly; Described host data modulation module also with described host data demodulation module common ground; One end of described host data modulation module connects described transmission voltage output end, constitutes the described transmission voltage input end of described host communication interface; Described host data modulation module also has an end to link to each other with described host computer control module; Input one, one end that all the other two ends of described host data modulation module, an end connect described electronic switch one leads to described host communication interface outside, constitutes of described signal bus;
One end of described host data demodulation module links to each other with described host computer control module; One end connects the described reception voltage output end of described host power supply system, constitutes the described reception voltage input end of described host communication interface; All the other ends of described host data demodulation module connect the input two of described electronic switch one;
The output of described electronic switch one leads to described host communication interface outside, constitutes another root of described signal bus; The control end of described electronic switch one links to each other with described host computer control module.
4. according to the described communication system of claim 3, it is characterized in that:
Described host data modulation module is a unipolarity data-modulated module, and described host data demodulation module is the unipolarity data demodulation module; Wherein, described unipolarity data-modulated module comprises a driver module and electronic switch two,
One end of described driver module connects described operating voltage output; One end connects described host computer control module; One end links to each other with the control end of described electronic switch two; Also has an end ground connection;
Two inputs of described electronic switch two, a ground connection, another and remaining end of described driver module lead to described unipolarity communication interface outside jointly, constitute the described transmission voltage input end of described unipolarity communication interface; The output of described electronic switch two leads to described unipolarity communication interface outside, is connected to the described input one of described electronic switch one.
5. according to the described communication system of claim 3, it is characterized in that:
Described host data modulation module is a bipolarity data-modulated module, and described host data demodulation module is the bipolarity data demodulation module; Wherein, described bipolarity data-modulated module comprises driver module one, driver module two, electronic switch three, electronic switch four and an inverter,
Two described driver modules and described inverter are connected to the described operating voltage output of described host power supply system jointly; Two described driver modules and described inverter be common ground also; The signal input part of the signal input part of described inverter and described driver module two is connected to described host computer control module jointly, and the signal output part of described inverter is connected to the signal input part of described driver module one; The signal output part of described driver module two is connected to the control end of described electronic switch four, and the signal output part of described driver module one is connected to the control end of described electronic switch three;
All the other ends of an input of described electronic switch three, an input of described electronic switch four, described driver module one and all the other ends of described driver module two link together, and lead to described bipolarity data-modulated module-external jointly, constitute the described transmission voltage input end of described bipolarity data-modulated module; Another input common ground of another input of described electronic switch three and electronic switch four; The output of described electronic switch three leads to described bipolarity data-modulated module-external, constitutes of described signal bus; The output of described electronic switch four leads to described bipolarity data-modulated module-external, is connected to the described input one of described electronic switch one.
6. according to claim 1,2 or 3 described communication systems, it is characterized in that:
The voltage of described transmission voltage output end output is higher than the voltage of described reception voltage output end output.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200005090U CN201369720Y (en) | 2009-01-06 | 2009-01-06 | Master-slave-type DC carrier communication system |
| AU2009311067A AU2009311067B2 (en) | 2008-11-07 | 2009-11-06 | Master-slave mode direct current carrier communication system |
| EA201100721A EA021702B1 (en) | 2008-11-07 | 2009-11-06 | Communication system of master-slave mode |
| PCT/CN2009/074837 WO2010051767A1 (en) | 2008-11-07 | 2009-11-06 | Communication system of master-slave mode direct current carrier |
| ZA2011/04191A ZA201104191B (en) | 2008-11-07 | 2011-06-06 | Master-slave mode direct current carrier communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200005090U CN201369720Y (en) | 2009-01-06 | 2009-01-06 | Master-slave-type DC carrier communication system |
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| Publication Number | Publication Date |
|---|---|
| CN201369720Y true CN201369720Y (en) | 2009-12-23 |
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| CNU2009200005090U Expired - Fee Related CN201369720Y (en) | 2008-11-07 | 2009-01-06 | Master-slave-type DC carrier communication system |
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| CN (1) | CN201369720Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112542037A (en) * | 2020-12-23 | 2021-03-23 | 深圳市骏普科技开发有限公司 | Digital meter reading communication system |
| CN113316293A (en) * | 2021-06-10 | 2021-08-27 | 广东左向照明有限公司 | Integration circuit board for emergency lamp distribution |
| CN113949671A (en) * | 2021-09-29 | 2022-01-18 | 深圳市优必选科技股份有限公司 | Master-slave communication system and method, master and slave |
| CN114817112A (en) * | 2022-04-29 | 2022-07-29 | 北京中科银河芯科技有限公司 | Slave equipment and master-slave communication system |
-
2009
- 2009-01-06 CN CNU2009200005090U patent/CN201369720Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542037A (en) * | 2020-12-23 | 2021-03-23 | 深圳市骏普科技开发有限公司 | Digital meter reading communication system |
| CN112542037B (en) * | 2020-12-23 | 2024-06-11 | 深圳市骏普科技开发有限公司 | Digital meter reading communication system |
| CN113316293A (en) * | 2021-06-10 | 2021-08-27 | 广东左向照明有限公司 | Integration circuit board for emergency lamp distribution |
| CN113316293B (en) * | 2021-06-10 | 2024-01-12 | 广东左向科技有限公司 | Integrated circuit board for distribution and distribution of emergency lamps |
| CN113949671A (en) * | 2021-09-29 | 2022-01-18 | 深圳市优必选科技股份有限公司 | Master-slave communication system and method, master and slave |
| CN113949671B (en) * | 2021-09-29 | 2023-06-02 | 深圳市优必选科技股份有限公司 | Master-slave communication system, method, host and slave |
| CN114817112A (en) * | 2022-04-29 | 2022-07-29 | 北京中科银河芯科技有限公司 | Slave equipment and master-slave communication system |
| CN114817112B (en) * | 2022-04-29 | 2024-03-26 | 北京中科银河芯科技有限公司 | Slave machine equipment and master-slave machine communication system |
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