CN106326174A - Two-wire communication circuit - Google Patents
- ️Wed Jan 11 2017
CN106326174A - Two-wire communication circuit - Google Patents
Two-wire communication circuit Download PDFInfo
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Publication number
- CN106326174A CN106326174A CN201610776674.XA CN201610776674A CN106326174A CN 106326174 A CN106326174 A CN 106326174A CN 201610776674 A CN201610776674 A CN 201610776674A CN 106326174 A CN106326174 A CN 106326174A Authority
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- China Prior art keywords
- machine side
- comparator
- machine end
- main control
- main Prior art date
- 2016-08-31 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004891 communication Methods 0.000 title abstract description 15
- 101100236764 Caenorhabditis elegans mcu-1 gene Proteins 0.000 claims description 23
- 230000005611 electricity Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 102100039435 C-X-C motif chemokine 17 Human genes 0.000 description 1
- 101000889048 Homo sapiens C-X-C motif chemokine 17 Proteins 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Control Of Eletrric Generators (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention relates to a two-wire communication circuit, in particular to a circuit for a communication device for data transmission. The two-wire communication circuit comprises a power supply side, a host machine side and a slave machine side, the host machine side and the slave machine side perform mutual data exchange, a power supply supplies power for the host machine side and the slave machine side, and a main control computer (MCU1) is arranged on the host machine side. When the host machine side performs data exchange with the slave machine side, a main control module constantly changes output voltage, and the slave machine side outputs a voltage signal to the host machine side for analysis, processing and output. For ensuring that the host machine side and the slave machine side are both in an electrified state while the host machine side and a slave machine side simultaneously perform data exchange, the output voltage VCC' of the MCU1 is smaller than the input voltage VCC of the power supply side but is greater than the input voltage VCC2 of the slave machine side or the output voltage VCC' of the MCU2 is smaller than the input voltage VCC of the power supply side but is greater than the input voltage VCC2 of the slave machine side. The large-electric-quantity power supply can be achieved and an information transfer function can be also achieved based on two wires.
Description
Technical field
The present invention relates to a kind of electrical communication equipment circuit, particularly to the circuit of a kind of data transmission communication equipment.
Background technology
The present invention relates to the communication before main frame and peripheral hardware, specifically a kind of two wires communication modes, be widely portable to thing Networking arenas.
Carry out data transmission between at present conventional main frame and peripheral hardware main with four line modes (one power line, two Data wire and a ground wire) or three line modes (power line, a data line and a ground wire) communicate, the present invention is Employing carries out communication by the way of two wires, and (ground wire and a data line, data wire is simultaneously for providing power supply, main frame from machine Half-duplex operation can be carried out with from machine), and data transmission is two-way, thus this two wires communication modes has circuit letter Single, hardware spending is few, with low cost, it is simple to extend and the advantage such as maintenance.
Along with the development of electronic technology, electronic technology has been largely used to various industry, but the most almost all of product Product are all active, and i.e. product is with power supply.Just because of power supply must be connected, greatly limit electronic technology product Application places.Also having a small amount of electronic product to begin with passive design, but interface heart yearn is many, its structure and manufacturing process are complicated, Homogeneous e product compares technology with traditional product and manufacturing process is complicated, and manufacturing cost is high, is of limited application.
Summary of the invention
The present invention proposes one can meet power supply on the basis of two lines, can meet again two lines that information transmits Telecommunication circuit.
A kind of two line telecommunication circuits of the present invention, the host side including power end and being exchanged with each other data and from machine end, Power supply respectively host side and powering from machine end, is provided with main control computer MCU1 in host side, host side with carry out data friendship from machine end When changing, main control module constantly changes output voltage, exports after host side output voltage signal is analyzed and processed by machine end, for protecting Demonstrate,prove host side and while machine end carries out data exchange, be in electriferous state, main control computer MCU1 output voltage simultaneously respectively VCC ' is more than from machine end input voltage VCC2 or slave controller MCU2 output voltage VCC less than power end input voltage VCC " it is less than Power end input voltage VCC is more than from machine end input voltage VCC2.
Preferably, described power end one tunnel directly powers for host side, separately leads up to R2 for power from machine end.
Preferably, described host side also includes the main universal serial bus radiating circuit Tx being connected respectively with main control computer outfan Rx is received with main universal serial bus；Described main universal serial bus radiating circuit Tx includes high speed electronic switch Q1 and resistance connected in series R1；Described main universal serial bus receives circuit Rx and includes that main comparator, described main comparator outfan are connected with main control computer MCU1, its Middle main comparator two input connects reference voltage and resistive module M1 respectively；
Described include being connected with slave controller outfan respectively from machine end slave controller MCU2, from universal serial bus radiating circuit Tx and from Universal serial bus receives Rx；Described include high speed electronic switch Q2 and resistance connected in series from universal serial bus radiating circuit Tx R11；Described receive circuit Rx from universal serial bus and include from comparator, described be connected with slave controller MCU2 from comparator output terminal, Wherein connect reference voltage and resistive module M3 respectively from comparator two input；
Main control computer MCU1 controls the continuous opening and closing of high speed electronic switch Q1, changes the voltage between resistance R2 and resistance R1, described electricity Pressure signal is entered from comparator by resistive module M3, from comparator, the voltage signal received compares with reference voltage general afterwards Result exports to slave controller MCU2；R1 output voltage VCC ' is electric more than from the input of machine end less than power end input voltage VCC simultaneously Pressure VCC2；
Or slave controller MCU2 controls the continuous opening and closing of high speed electronic switch Q2, change the voltage between resistance R2 and resistance R11, institute State voltage signal to be entered from comparator by resistive module M1, from comparator, the voltage signal received is compared with reference voltage After by result output to main control computer MCU1；R11 output voltage VCC simultaneously " defeated more than from machine end less than power end input voltage VCC Enter voltage VCC2.
Further, described high speed electronic switch Q1 is audion or metal-oxide-semiconductor.
Further, described high speed electronic switch Q1 is one or more groups, and described many group high speed electronic switch Q1 mutually go here and there Connection.
Further, it is that main control computer MCU1 powers that described power end leads up to main manostat LDO1, separately leads up to R2 and be that slave controller MCU2 powers from manostat LDO2.
A kind of telecommunication circuit, described host side is one, is several from machine end, described several between machine end mutually After parallel connection, the output with host side is connected.
Original four lines, three line communication modes are changed into two line communication patterns, are adopted by two line telecommunication circuits of the present invention Modulate by dividing potential drop mode, high electricity can be met on the basis of existing two lines and power and the design of information transfer function interface, Processing technology is simple, reduces low cost simultaneously, and reliability is high, the most also supports high-power power supply, and communication speed is high, the present invention Circuit connection structure is simple, practical can industrialized production.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the present invention.
Fig. 2 is principle of the invention sequential chart.
Detailed description of the invention
Embodiment 1.
A kind of two line telecommunication circuits of the present invention, the host side including power end and being exchanged with each other data and from machine end, It is that main control computer MCU1 powers that power end leads up to main manostat LDO1, separately leads up to R2 and be slave controller from manostat LDO2 MCU2 powers.Power end output voltage VCC by main manostat LDO1 output galvanic current source VCC1 to main control computer MCU1, Stable rated operational voltage is provided for slave controller MCU2, for ensureing that host side counts with from machine end simultaneously from manostat LDO2 Being in electriferous state respectively according to while exchange, main control computer MCU1 output voltage VCC ' is big less than power end input voltage VCC Yu Congji end input voltage VCC2 or slave controller MCU2 output voltage VCC " it is more than from machine end less than power end input voltage VCC Input voltage VCC2.Described host side also includes main universal serial bus radiating circuit Tx and the master being connected respectively with main control computer outfan Universal serial bus receives Rx；Described main universal serial bus radiating circuit Tx includes high speed electronic switch Q1 and resistance R1 connected in series； Described main universal serial bus receives circuit Rx and includes that main comparator, described main comparator outfan are connected with main control computer MCU1, wherein Main comparator two input connects reference voltage and resistive module M1 respectively；
Described include being connected with slave controller outfan respectively from machine end slave controller MCU2, from universal serial bus radiating circuit Tx and from Universal serial bus receives Rx；Described include high speed electronic switch Q2 and resistance R11 connected in series from universal serial bus radiating circuit Tx； Described receive circuit Rx from universal serial bus and include from comparator, described be connected with slave controller MCU2 from comparator output terminal, wherein Reference voltage and resistive module M3 is connected respectively from comparator two input；
Main control computer MCU1 controls the continuous opening and closing of high speed electronic switch Q1, changes the voltage between resistance R2 and resistance R1, described electricity Pressure signal is entered from comparator by resistive module M3, from comparator, the voltage signal received compares with reference voltage general afterwards Result exports to slave controller MCU2；R1 output voltage VCC ' is electric more than from the input of machine end less than power end input voltage VCC simultaneously Pressure VCC2；
Or slave controller MCU2 controls the continuous opening and closing of high speed electronic switch Q2, change the voltage between resistance R2 and resistance R11, institute State voltage signal to be entered from comparator by resistive module M1, from comparator, the voltage signal received is compared with reference voltage After by result output to main control computer MCU1；R11 output voltage VCC simultaneously " defeated more than from machine end less than power end input voltage VCC Enter voltage VCC2.
High speed electronic switch Q1 of the present invention is audion or metal-oxide-semiconductor, and the present embodiment is metal-oxide-semiconductor.In order to make resistance R2 With the voltage between resistance R11 or resistance R2 and resistance R1 reaches bigger change, the signal receiving error minimized, this Bright described high speed electronic switch Q1 least one set or many groups, if how group high speed electronic switch Q1, be then serially connected between them.
When main control computer MCU1 carries out information transmission to slave controller MCU2, main control computer MCU1 is according to controlling high speed electronic switch Q1 constantly fast conducting or cut-off, make the voltage high between resistance R1 and resistance R2 or drag down, and produces voltage pulsation VCC ', owing to VCC ' is continually changing, therefore the output voltage through resistive module M3 is also change, therefore from comparator Voltage on U2 pin 3 is exactly the output voltage VCC of resistance M3 ", this output voltage VCC " join with the benchmark in comparator U2 Examining voltage to compare, voltage signal result of the comparison is exported by comparator U2 pin 1, owing to this voltage is defeated less than power end Entering voltage VCC and be more than slave controller MCU2 input voltage VCC2, therefore slave controller MCU2 assert this output according to this voltage signal Voltage signal is the data message that main control computer MCU1 sends.
When slave controller MCU2 carries out information transmission to main control computer MCU1: slave controller MCU1 is according to controlling high speed electronic switch Q2 constantly fast conducting or cut-off, make the voltage high between resistance R11 and resistance R2 or drag down, and produces voltage pulsation VCC ', owing to VCC ' is continually changing, therefore the output voltage through resistive module M1 is also change, therefore main comparator Voltage on U1 pin 3 is exactly the output voltage VCC of resistive module M1 ", output voltage VCC " with benchmark in comparator U1 Reference voltage compares, and voltage signal result of the comparison is exported by comparator U1 pin 1, owing to this voltage is less than power end Input voltage VCC is more than slave controller MCU2 input voltage VCC2, and therefore according to this voltage signal, main control computer MCU2 assert that this is defeated Going out voltage signal is the data message that main control computer MCU2 sends.
Embodiment 2.
The present embodiment is substantially the same manner as Example 1, and difference is multi-thread communication line described in the present embodiment, including one Platform host side and some from machine end, described some parallel with one another between machine end after be connected with the output of host side.Utilize Described mode can realize a road and transmit the information of multichannel.Processing technology of the present invention is simple, reduces low cost, reliably simultaneously Property high, the most also support high-power power supply, communication speed is high.
Claims (7)
1. a two line telecommunication circuit, the host side including power end and being exchanged with each other data and from machine end, power supply is respectively main Machine end and powering from machine end, is provided with main control computer MCU1 in host side, it is characterised in that: host side with carry out data exchange from machine end Time, main control module constantly changes output voltage, exports after host side output voltage signal is analyzed and processed by machine end, for ensureing Host side with while machine end carries out data exchange simultaneously, be in electriferous state, main control computer MCU1 output voltage VCC ' respectively Less than power end input voltage VCC more than from machine end input voltage VCC2 or slave controller MCU2 output voltage VCC " less than power supply End input voltage VCC is more than from machine end input voltage VCC2.
A kind of two line telecommunication circuits, it is characterised in that: described power end one tunnel directly supplies for host side Electricity, separately leads up to R2 for power from machine end.
A kind of two line telecommunication circuits, it is characterised in that:
Described host side also includes the main universal serial bus radiating circuit Tx that is connected respectively and main universal serial bus with main control computer outfan Receive Rx；Described main universal serial bus radiating circuit Tx includes high speed electronic switch Q1 and resistance R1 connected in series；Described main string Row bus receives circuit Rx and includes that main comparator, described main comparator outfan are connected with main control computer MCU1, wherein main comparator Two inputs connect reference voltage and resistive module M1 respectively；
Described include being connected with slave controller outfan respectively from machine end slave controller MCU2, from universal serial bus radiating circuit Tx and from Universal serial bus receives Rx；Described include high speed electronic switch Q2 and resistance connected in series from universal serial bus radiating circuit Tx R11；Described receive circuit Rx from universal serial bus and include from comparator, described be connected with slave controller MCU2 from comparator output terminal, Wherein connect reference voltage and resistive module M3 respectively from comparator two input；
Main control computer MCU1 controls the continuous opening and closing of high speed electronic switch Q1, changes the voltage between resistance R2 and resistance R1, described electricity Pressure signal is entered from comparator by resistive module M3, from comparator, the voltage signal received compares with reference voltage general afterwards Result exports to slave controller MCU2；R1 output voltage VCC ' is electric more than from the input of machine end less than power end input voltage VCC simultaneously Pressure VCC2；
Or slave controller MCU2 controls the continuous opening and closing of high speed electronic switch Q2, change the voltage between resistance R2 and resistance R11, institute State voltage signal to be entered from comparator by resistive module M1, from comparator, the voltage signal received is compared with reference voltage After by result output to main control computer MCU1；R11 output voltage VCC simultaneously " defeated more than from machine end less than power end input voltage VCC Enter voltage VCC2.
A kind of two line telecommunication circuits, it is characterised in that: high speed electronic switch Q1 is audion or MOS Pipe.
5. a kind of two line telecommunication circuits as described in claim 3 or 4, it is characterised in that: high speed electronic switch Q1 is one group or many Group, described many group high speed electronic switch Q1 are serially connected.
A kind of two line telecommunication circuits, it is characterised in that: described power end leads up to main manostat LDO1P1 is that main control computer MCU1 powers, and separately leads up to R2 and be that slave controller MCU2 powers from manostat LDO2P2.
7. include a kind of telecommunication circuit of two line telecommunication circuits as claimed in claim 1, it is characterised in that described host side is one Individual, be several from machine end, described several parallel with one another between machine end after be connected with the output of host side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776674.XA CN106326174B (en) | 2016-08-31 | 2016-08-31 | A kind of two line telecommunication circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776674.XA CN106326174B (en) | 2016-08-31 | 2016-08-31 | A kind of two line telecommunication circuits |
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| CN106326174A true CN106326174A (en) | 2017-01-11 |
| CN106326174B CN106326174B (en) | 2019-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610776674.XA Active CN106326174B (en) | 2016-08-31 | 2016-08-31 | A kind of two line telecommunication circuits |
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Cited By (4)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109857010A (en) * | 2018-12-24 | 2019-06-07 | 惠州市蓝微电子有限公司 | A kind of two-wire realizes the control method of power supply and two-way communication in real time |
| CN110456849A (en) * | 2019-06-27 | 2019-11-15 | 九阳股份有限公司 | A kind of food processor |
| CN110456664A (en) * | 2019-06-27 | 2019-11-15 | 九阳股份有限公司 | A kind of food processor |
| CN111665763A (en) * | 2020-06-28 | 2020-09-15 | 陕西精一工业科技有限公司 | Two-line speed control circuit of sewing machine |
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| US20120124258A1 (en) * | 2010-11-15 | 2012-05-17 | Stmicroelectronics (Rousset) Sas | Conversion of a single-wire bus communication protocol |
| US20120250746A1 (en) * | 2011-03-30 | 2012-10-04 | Sonntag Jeffrey L | Transition interval coding for serial communication |
| CN102693205B (en) * | 2012-05-11 | 2015-03-18 | 杭州硅星科技有限公司 | Data transmission, power supply device, data transmission and power supply method thereof |
| CN105808487A (en) * | 2014-12-30 | 2016-07-27 | 杭州硅星科技有限公司 | Power supply device and control method thereof |
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2016
- 2016-08-31 CN CN201610776674.XA patent/CN106326174B/en active Active
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| EP0798901B1 (en) * | 1996-03-28 | 1999-02-10 | STMicroelectronics S.A. | Simultaneous transmission of power clock and data |
| CN102047615A (en) * | 2008-05-30 | 2011-05-04 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Serial-peripheral interface with reduced number of connection lines |
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Cited By (4)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109857010A (en) * | 2018-12-24 | 2019-06-07 | 惠州市蓝微电子有限公司 | A kind of two-wire realizes the control method of power supply and two-way communication in real time |
| CN110456849A (en) * | 2019-06-27 | 2019-11-15 | 九阳股份有限公司 | A kind of food processor |
| CN110456664A (en) * | 2019-06-27 | 2019-11-15 | 九阳股份有限公司 | A kind of food processor |
| CN111665763A (en) * | 2020-06-28 | 2020-09-15 | 陕西精一工业科技有限公司 | Two-line speed control circuit of sewing machine |
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| Publication number | Publication date |
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| CN106326174B (en) | 2019-01-29 |
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