CN209642666U - A kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit - Google Patents
A kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit Download PDFInfo
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- CN209642666U CN209642666U CN201920836767.6U CN201920836767U CN209642666U CN 209642666 U CN209642666 U CN 209642666U CN 201920836767 U CN201920836767 U CN 201920836767U CN 209642666 U CN209642666 U CN 209642666U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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Abstract
The utility model discloses a kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuits, including the first circuit module and second circuit module, first circuit module includes host side, DC power supply and resistance R1, second circuit module includes from generator terminal, diode D1 and capacitor C1, the main MCU port of host side is connected with the slave MCU port from generator terminal by communication line, DC power anode is connected in parallel power input positive terminal and one end resistance R1 of host side, the resistance R1 other end is connected to communication line one end, the communication line other end and the anode of diode D1 are connected in parallel, the cathode of diode D1 is connected in parallel the one end capacitor C1 again, the other end of capacitor C1, the power input negative pole end of host side, it is connected in parallel again with DC power cathode from the power input negative pole end of generator terminal.The utility model can be realized time sharing power supply and half-duplex operation, and circuit overall power is low, can be used for a long time with battery power supply.
Description
Technical field
The utility model relates to circuit communication technical field more particularly to a kind of low-power consumption short distance half-duplex Power Carriers
Telecommunication circuit.
Background technique
Short-range communication on the market generallys use the communications such as Bluetooth communication, WiFi communication, ZigBee communication,
But the disadvantages of to carry out data transmission that there are power consumptions big, at high cost, using complexity using these wireless communication techniques.
In order to overcome the defect of above-mentioned wireless near field communication, the common short-range communication of the prior art generallys use wired
The communication technology, existing short distance wired communication mode usually require main module, between module be arranged power supply line, ground wire and
Transmission line is just able to achieve normal communication, this mode main module, more from connecting cable between module (transmitting terminal and receiving end), connects
Line is inconvenient, and increases product cost.
In order to overcome the defect in short distance wire communication more than cable, there are also a kind of electric power communicated using power supply line
Line communicates (PLC) mode, and modulated high-frequency signal is superimposed upon on power line using electric current as carrier and is transmitted by it, electric power
Line communication have many advantages, such as transmission contains much information, transmission speed is fast, can two-way communication (also referred to as duplex communication), but using electric
Line of force communication mode needs that filtering and demodulation module is arranged in receiving end, causes cost higher.
In the lesser short-range communication application of some transmitted data amounts, such as to product price than more sensitive electrical type
Product is not suitable for using plc communication mode.Such as application No. is 201810079439.6, patent name is that " a kind of short distance is unidirectional
The utility application of the circuit structure of power supply reverse link communication ", is combined into one progress for power supply line and signal transmssion line
Closely wired one-way communication shares the power supply power supply from generator terminal to host side, i.e. slave and host shares a power supply, simplifies
Telecommunication circuit, reduces costs, but it can only realize reverse link communication, application limitation, be not particularly suitable for for need into
The occasion of row data exchange；And can only realize One-to-one communication, it cannot achieve one-to-many bus communication, can not be applied to need
Want the occasion of more equipment communications.
Utility model content
To solve the above-mentioned problems, the purpose of this utility model is to provide a kind of low-power consumption short distance half-duplex power supply loads
Power supply line and signal transmssion line are combined into one and carry out short distance wire communication by wave communication circuit, and power supply setting is in host side, master
Generator terminal with from can be realized time sharing power supply and communication between generator terminal, can be realized half-duplex operation with host side from generator terminal and exchange number
According to；And host side is communicated with from generator terminal and is waken up by interrupt function, circuit overall power is low, when being suitble to be powered with battery, is standby
Between it is long.
To achieve the above object, the utility model uses following technical scheme:
A kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit, including the first circuit module and second circuit mould
Block, first circuit module include host side, DC power supply and resistance R1, and the second circuit module includes from generator terminal, two
Pole pipe D1 and capacitor C1, the main MCU port of the host side and it is described from the slave MCU port of generator terminal pass through communication line phase
Even, the DC power anode is connected in parallel power input positive terminal and the one end the resistance R1 of the host side, the electricity
The resistance R1 other end is connected to described communication line one end, and the anode of the communication line other end and the diode D1 is connected in parallel,
The cathode of the diode D1 is connected in parallel the one end the capacitor C1 again, the electricity of the other end of the capacitor C1, the host side
Source input negative pole end, the power input negative pole end from generator terminal are connected in parallel with the DC power cathode again.
Further, the main MCU port of the host side has the function of data input, data output and I/O interrupt, institute
Data input function is stated for receiving communication data, the data output function is for initiating communication request or sending communication number
According to；The I/O interrupt function is for listening to communication request signal and waking up the host side, the host side and described from generator terminal
Between by establishing communication connection after responding the communication request signal, then carry out data transmission, disconnected after the data transfer ends logical
Letter connection, the main MCU port enter back into the state of listening to.
Further, described to have the function of data input, data output and I/O interrupt, institute from the slave MCU port of generator terminal
Data input function is stated for receiving communication data, the data output function is for initiating communication request or sending communication number
According to；The I/O interrupt function is described between generator terminal and the host side for listening to described in communication request and wake-up from generator terminal
It is communicated to connect, then carried out data transmission by foundation after responding the communication request signal, communication link is disconnected after the data transfer ends
Connect, it is described enter back into the state of listening to from port, the DC power supply continues by resistance R1, communication line and diode D1 to institute
It states and powers from generator terminal.
Further, the communication line only has single line cable, and at the same time using as power supply line.
Further, the second circuit module include one, two or more, it is more than two it is described second electricity
Road module is connected in parallel by communication line and first circuit module.
Further, when the second circuit module is one, the main MCU port of the host side or from generator terminal from
MCU port can be used as communication originating end and actively issue communication request signal.
Further, when the second circuit module is two or more, each institute in same communication network
It states from generator terminal and the host side and is correspondingly arranged unique identification id, each slave MCU port from generator terminal can only be by
The communication request signal that the corresponding main MCU port for responding the host side of the identification id of setting issues.
According to a kind of communication means for low-power consumption short distance half-duplex Power Carrier telecommunication circuit that foregoing circuit is realized, packet
Include following steps:
S1, upper electricity operation, first circuit module are first carried out by the DC power supply after connecting with second circuit module
Power supply, the DC power supply by resistance R1, communication line and diode D1 to it is described from generator terminal power, and to the capacitor C1 into
Row charging, the charging time that the capacitor C1 needs are t1, and an initialization stand-by time Twait, initialization are arranged in program
Stand-by time Twait is greater than the charging time t1 of the capacitor C1；
After S2, Twait waiting time, the first circuit module described in process control and the second circuit module enter
Working condition normally executes task, the main MCU port and is in from MCU port and listens to state；
S3, when program is communicated, the host side by main MCU port actively issue communication request believe
Number, it is described from generator terminal by after receiving communication request signal from MCU port and communication line enter interrupt service routine, with it is described
Host side establishes communication connection, then receives the data of the host side transmission and stores data；It is transmitted across in data
Cheng Zhong, when communication level is pulled low described in power from generator terminal by the capacitor C1；
S4, the host side retransmit a sign off code after having sent communication data, and the slave termination receives this
A frame data are returned to the host side again after sign off code, which includes initiation of communication code, communication data and communication
Stop code；
S5, the host side are communicated with described from generator terminal disconnection communication connection, end after receiving communication stop code；This time
After sign off the host side and it is described enter back into the state of listening to from generator terminal, the main MCU port and equal from MCU port
Discharge the control to the communication line.
Electric discharge formula when capacitor C1 described in abovementioned steps is powered are as follows:
,
Wherein；
Uo is the initial voltage at the both ends capacitor C1 in above-mentioned formula, and Uc is the voltage at the capacitor both ends after discharge time t,
τ is discharge time constant.
The utility model has the following beneficial effects:
1, the utility model can be achieved with power supply and signal using same root communication line and transmit, and host side and share from generator terminal
As soon as DC power supply can realize that near distance bidirectional communicates using simple and a small amount of electronic component well, can be realized half
Duplex communication exchanges number；And host side between generator terminal power and communicate can timesharing realization, be more conducive to communicating；
2, DC power supply, pull-up resistor and host side can integrate one circuit mould of composition in the utility model
Block, diode, capacitor integrate another circuit module of composition, number of electronic components in two circuit modules with from generator terminal
Few, overall volume is small, easy for installation, is highly suitable for installing on small-sized electronic product；
3, the utility model does not need to be arranged independent power supply from generator terminal, and host side can pass through interruption with communicating from generator terminal
Function wakes up, and when not communicating, circuit is able to enter low power consumpting state operation, keeps circuit overall power low, is suitble to be supplied with battery
It is electric, standby long using the time.
In short, the utility model circuit cost is low, time sharing power supply and half-duplex operation, circuit overall power can be realized
It is low, it can be used for a long time with battery power supply.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model low-power consumption short distance half-duplex Power Carrier telecommunication circuit；
Fig. 2 is the communication sequential chart of the utility model low-power consumption short distance half-duplex Power Carrier telecommunication circuit；
Fig. 3 is the circuit diagram that multiple second circuit modules are in parallel with the first circuit module in the utility model.
Description of symbols:
1, host side；11, main MCU port；2, DC power supply；3, from generator terminal；31, from MCU port；4, communication line；
10, the first circuit module；20, second circuit module.
Specific embodiment
The utility model is described in further details below in conjunction with the drawings and specific embodiments:
Join as shown in figure 1 to 3, a kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit, including the first circuit module
10 and second circuit module 20, first circuit module 10 includes host side 1, DC power supply 2 and resistance R1, second electricity
Road module 20 includes the main MCU port 11 of the host side 1 and described from generator terminal 3 from generator terminal 3, diode D1 and capacitor C1
Slave MCU port 31 by communication line 4 be connected, 2 anode of DC power supply is connected in parallel the power input of the host side 1
Positive terminal and the one end the resistance R1, the resistance R1 other end are connected to described 4 one end of communication line, and the communication line 4 is another
It holds and is connected in parallel with the anode of the diode D1, the cathode of the diode D1 is connected in parallel the one end the capacitor C1, institute again
State the other end of capacitor C1, the power input negative pole end of the host side 1, the power input negative pole end from generator terminal 3 again with
2 cathode of DC power supply is connected in parallel, and constitutes a complete circuit.The communication line 4 need to use single line
Cable, and at the same time being used as power supply line.
The main MCU port 11 of the host side 1 has the function of data input, data output and I/O interrupt, the data
Input function is for receiving communication data, and the data output function is for initiating communication request or sending communication data；It is described
I/O interrupt function the host side 1 and described passes through for listening to communication request and waking up the host side 1 between generator terminal 3
Communication connection is established after responding the communication request signal, then carries out data transmission, disconnect communication connection, institute after the data transfer ends
It states main MCU port 11 and enters back into the state of listening to.
Shown in Figure 1, the host side 1 is realized by ON-OFF control circuit in internal MCU and process control to master
The each function switch of MCU port 11.
It is described to have the function of data input, data output and I/O interrupt, the data from the slave MCU port 31 of generator terminal 3
Input function is for receiving communication data, and the data output function is for initiating communication request or sending communication data；It is described
I/O interrupt function is described to pass through between generator terminal 3 and the host side 1 for listening to described in communication request and wake-up from generator terminal 3
Communication connection is established after responding the communication request signal, then is carried out data transmission, communication connection, institute are disconnected after the data transfer ends
State from MCU port 31 and enter back into the state of listening to, the DC power supply 2 by resistance R1, communication line 4 and diode D1 continue to
It is described to power from generator terminal 3.
It is shown in Figure 1, it is described from generator terminal 3 by ON-OFF control circuit in internal MCU and process control realize to from
The each function switch of MCU port 31.
Referring to shown in Fig. 1 or Fig. 3, the second circuit module 20 includes one, two or more, more than two
The second circuit module 20 is connected in parallel by communication line 4 with first circuit module 10.When the second circuit module
20 only one when, the main MCU port 11 of the host side 1 or can be used as communication hair from the slave MCU port 31 of generator terminal 3
Origin or beginning actively issues communication request signal.When the second circuit module 20 is two or more, in same communication network
Each of network is described is correspondingly arranged unique identification id from generator terminal 3 and the host side 1, it is each it is described from generator terminal 3 from
The communication request that MCU port 31 can only be issued by the corresponding main MCU port 11 for responding the host side 1 of the identification id of setting
Signal, it is each at this time described actively to issue communication request signal from generator terminal 3.
In practical application, the communication request signal in foregoing circuit generallys use low level interrupt signal, master when communication
Generator terminal 1 can first send opening code of the low level signal of a specific width as communication, after host side 1 has sent opening code,
Followed by communication data is sent, communication data retransmits the low level of a specific width as end code, host after having sent
End 1 has sent the control released immediately after end code to communication line 4, is set main MCU port 11 to by process control
Data input state prepares to receive data.It is corresponding from generator terminal 3 receive host side 1 send opening code after, response interrupt with
Host side 1 establishes communication connection, receives and saves paid-in communication data, receives the stopping that host side 1 is sent from generator terminal 3
Data output state will be set as from MCU port 31 by process control after code, it is corresponding at this time to be corresponded to from generator terminal 3
Communication line 4 is controlled, convenient for returning a frame data to host side 1, such communication mode is known as half-duplex operation；With it is simple
Simplex communication is compared, and half-duplex operation can make host side and realize bidirectional data exchange from generator terminal, convenient for the realization of low cost
The automation of product, intelligentized control method.Both sides disconnect communication connection, terminate communication after 3 return data of generator terminal, lead to for this time
After letter the host side and it is described enter back into the state of listening to from generator terminal, convenient for next time communicate again.
And by process control, circuit being controlled when not communicating and enters low power consumpting state operation, when communication passes through interruption
Function wakes up, control the host side with from the corresponding working procedure of generator terminal progress.
The Principle of Communication of the utility model telecommunication circuit can refer to iic bus Principle of Communication, but IIC than in the prior art
A clock line is omitted in bus communication circuitry, and telecommunication circuit is simpler.Those of skill in the art can be according to this reality
With in novel circuit and communication means establishment control program implement technical solution.
According to a kind of communication means for low-power consumption short distance half-duplex Power Carrier telecommunication circuit that foregoing circuit is realized, packet
Include following steps:
First by the DC power supply 2 after S1, upper electricity operation, first circuit module 10 and the connection of second circuit module 20
It is powered, the DC power supply 2 is powered to described from generator terminal 3 by resistance R1, communication line 4 and diode D1, and to described
Capacitor C1 charges, and the charging time that the capacitor C1 needs is t1, and an initialization stand-by time is arranged in program
Twait, initialization stand-by time Twait are greater than the charging time t1 of the capacitor C1；
After S2, Twait waiting time, the first circuit module 10 and the second circuit module 20 described in process control
Task is normally executed into working condition, the main MCU port 11 and is in from MCU port 31 and is listened to state；
S3, when program is communicated, the host side 1 actively issues communication request by main MCU port 11
Signal, it is described from generator terminal 3 by after receiving communication request signal from MCU port 31 and communication line 4 enter interrupt service routine,
It establishes and communicates to connect with the host side 1, then receive the data that the host side 1 is transmitted and store data；In number
According in transmission process, when communication level is pulled low described in power from generator terminal 3 by the capacitor C1；
S4, the host side 1 retransmit a sign off code after having sent communication data, described to receive from generator terminal 3
A frame data are returned to the host side 1 again after the sign off code, which includes initiation of communication code, communication data and lead to
Believe stop code；
S5, the host side 1 are communicated with described from the disconnection of generator terminal 3 communication connection, end after receiving communication stop code；It should
After secondary sign off the host side 1 and it is described enter back into the state of listening to from generator terminal 3, the main MCU port 11 and logical from MCU
Casually 31 control of the release to the communication line 4, after releasing the control, makes to restore high level on communication line 4 by resistance R1, from
And restore to charge to capacitor C1.
The host side 1 and it is described during carrying out data transmission between generator terminal 3 when communication level is pulled low described in
It powers from generator terminal 3 by the capacitor C1, electric discharge formula when capacitor C1 described in abovementioned steps discharges are as follows:
,
Wherein；
Uo is the initial voltage at the both ends capacitor C1 in above-mentioned formula, and Uc is the voltage at the capacitor both ends after discharge time t,
τ is discharge time constant, and R is equivalent resistance when circuit works, and C is the capacitance of the capacitor C1.
In practical application, the selection of the capacitor C1 capacitance need to comprehensively consider circuit operating current and communication code rate it
Between relationship, to ensure communication efficiency；Such as when communication code rate is set in 2kbps, then the communication of a double byte data is transmitted
Time is 10ms.
For example, sensor circuit (is equivalent to from generator terminal when the utility model is applied in infrared induction tap product
Circuit) operating current can be within 30uA, operating voltage 3V, circuit equivalent discharge resistance be 100K ohm, select at this time
The capacitor of 20uF obtains the electric discharge when capacitance voltage drops to 2.9V by 3V as storage capacitor, by aforementioned capacitor electric discharge formula
Time is 70ms, call duration time 10ms needed for being far longer than minimum data transmission, as long as sensor circuit electricity that is, in communication process
Pressure is not less than 2.9V, so that it may guarantee that sensor circuit (being equivalent to slave terminal circuit) can work normally, and can be with infrared induction
Governor circuit (being equivalent to master control terminal circuit) in tap product communicates, and restores to charge to storage capacitor again after sign off,
Make sensor circuit for a long time being capable of cycle operation；Sensor circuit and governor circuit are divided into two circuit modules, convenient in the product
It installs and uses, as long as and sensor circuit and governor circuit pass through a shared communication line and power supply line and another cathode connects
Wiring is connected, very convenient as long as both threads are connected that is, between two circuit modules of sensor circuit and governor circuit.
The foregoing is merely specific embodiment of the present utility model, are not intended to limit the patent model of the utility model
It encloses, equivalent structure transformation made by using the description of the utility model and the drawings is applied directly or indirectly in it
His relevant technical field, is also included in the patent protection scope of the utility model.
Claims (7)
1. a kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit, it is characterised in that: including the first circuit module (10)
With second circuit module (20), first circuit module (10) includes host side (1), DC power supply (2) and resistance R1, described
Second circuit module (20) includes from generator terminal (3), diode D1 and capacitor C1, the main MCU port (11) of the host side (1)
It is connected from the slave MCU port (31) of generator terminal (3) by communication line (4) with described, DC power supply (2) anode is connected in parallel
The power input positive terminal of the host side (1) and the one end the resistance R1, the resistance R1 other end and the communication line (4)
One end connection, the anode of communication line (4) other end and the diode D1 are connected in parallel, and the cathode of the diode D1 is again
It is connected in parallel the one end the capacitor C1, the power input negative pole end, described of the other end of the capacitor C1, the host side (1)
It is connected in parallel again with the DC power supply (2) cathode from the power input negative pole end of generator terminal (3).
2. a kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit according to claim 1, it is characterised in that: institute
The main MCU port (11) for stating host side (1) has the function of data input, data output and I/O interrupt, the data input work
Communication data can be used to receive, the data output function to be for initiating communication request or sending communication data；The I/O interrupt
Function is for listening to communication request signal and wake up the host side (1), the host side (1) and described between generator terminal (3)
It is communicated to connect, then carried out data transmission by foundation after responding the communication request signal, communication link is disconnected after the data transfer ends
It connects, the main MCU port (11) enters back into the state of listening to.
3. a kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit according to claim 1, it is characterised in that: institute
Stating from the slave MCU port (31) of generator terminal (3) has the function of data input, data output and I/O interrupt, the data input work
Communication data can be used to receive, the data output function to be for initiating communication request or sending communication data；The I/O interrupt
Function is described between generator terminal (3) and the host side (1) for listening to described in communication request signal and wake-up from generator terminal (3)
It is communicated to connect, then carried out data transmission by foundation after responding the communication request signal, communication link is disconnected after the data transfer ends
Connect, it is described enter back into the state of listening to from MCU port (31), the DC power supply (2) passes through resistance R1, communication line (4) and two
Pole pipe D1 continues to power to described from generator terminal (3).
4. a kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit according to claim 1, it is characterised in that: institute
It states communication line (4) and there was only single line cable, and at the same time being used as power supply line.
5. a kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit according to claim 1, it is characterised in that: institute
State second circuit module (20) include one, two or more, more than two second circuit modules (20) pass through
Communication line (4) is connected in parallel with first circuit module (10).
6. a kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit according to claim 5, it is characterised in that: institute
When to state second circuit module (20) be one, the main MCU port (11) of the host side (1) or logical from the slave MCU of generator terminal (3)
Casually (31) can be used as communication originating end and actively issue communication request signal.
7. a kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit according to claim 5, it is characterised in that: institute
It is described from generator terminal (3) and institute in each of same communication network when to state second circuit module (20) be two or more
It states host side (1) and is correspondingly arranged unique identification id, each slave MCU port (31) from generator terminal (3) can only be by setting
The communication request signal that the corresponding main MCU port (11) for responding the host side (1) of fixed identification id issues.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920836767.6U CN209642666U (en) | 2019-06-04 | 2019-06-04 | A kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit |
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| CN201920836767.6U CN209642666U (en) | 2019-06-04 | 2019-06-04 | A kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071742A (en) * | 2019-06-04 | 2019-07-30 | 福州优朋电子有限公司 | A kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit and communication means |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071742A (en) * | 2019-06-04 | 2019-07-30 | 福州优朋电子有限公司 | A kind of low-power consumption short distance half-duplex Power Carrier telecommunication circuit and communication means |
| CN110071742B (en) * | 2019-06-04 | 2023-11-28 | 福州优朋电子有限公司 | Low-power-consumption near-distance half-duplex power supply carrier communication circuit and communication method |
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