CN101179398A - Mongline two-way communication circuit - Google Patents
Mongline two-way communication circuit Download PDFInfo
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- CN101179398A CN101179398A CNA2007101236581A CN200710123658A CN101179398A CN 101179398 A CN101179398 A CN 101179398A CN A2007101236581 A CNA2007101236581 A CN A2007101236581A CN 200710123658 A CN200710123658 A CN 200710123658A CN 101179398 A CN101179398 A CN 101179398A
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Abstract
The invention discloses a single line intercommunication circuit, which comprises two or more control modules. Each control module comprises at least a signal receiving terminal and at least a signal sending terminal. The control module also comprises a received signal transforming circuit and a sent signal transforming circuit. One end of the received signal transforming circuit is connected with the signal receiving terminal; one end of the sent signal transforming circuit is connected with the signal sending terminal. The other end of the received signal transforming circuit is connected with the other end of the sent signal transforming circuit and is also connected with one end of the received signal transforming circuit and one end of the sent signal transforming circuit of another control module through a signal transmission line. The invention is suitable for data transmission between two control modules with small data transmission amount. Only three transmission lines are needed between the two control modules. A signal line is needed for data transmission and two power source lines are needed for power supply. Thus communication quality is reliable and cost is low.
Description
Technical field
The present invention relates to telecommunication circuit, especially relate to a kind of mongline two-way communication circuit.
Background technology
The function of household electrical appliances such as air-conditioning, refrigerator is more and more on the market now, and the increase of function must be had higher requirement to control circuit.Many plate structures are all adopted in control between existing each functional module, add a display panels as a master control borad.That communication mode between existing each control board mainly contains is infrared, the mode of RF module and various multibuss.But these communication mode circuit more complicated, the manufacturing cost height.And because the data that electrical equipment such as household electrical appliances will transmit are limited, adopting these communication lines is a kind of very big wastes, is unfavorable for reducing cost and economizing on resources.
Summary of the invention
The technical problem to be solved in the present invention is to remedy above-mentioned defective, proposes a kind of mongline two-way communication circuit.
Technical problem of the present invention is solved by the following technical programs.
This mongline two-way communication circuit comprises two or more control modules, and each control module comprises at least one signal receiving end and at least one signal sending end, and its characteristics are:
Described each control module also comprises the received signal change-over circuit and sends signaling conversion circuit, one end of described received signal change-over circuit is connected with signal receiving end, one end of described transmission signaling conversion circuit is connected with signal sending end, the described received signal change-over circuit other end is connected with the other end that sends signaling conversion circuit, and is connected with an end that sends signaling conversion circuit with an end of the received signal change-over circuit of another control module by signal transmssion line.
Also comprise two power transmission lines that are connected between two control modules.
Described received signal change-over circuit and transmission signaling conversion circuit are the triode buffer circuit.
The beneficial effect that the present invention is compared with the prior art is: only need to connect three transmission lines between two control modules, a holding wire carries out the transmission of signal, and two power lines provide power supply, make communication quality reliable, with low cost.
Description of drawings
Fig. 1 is the functional block diagram of the specific embodiment of the invention;
Fig. 2 is a specific embodiment of the invention circuit diagram.
Embodiment
Mongline two-way communication circuit as shown in Figure 1 and Figure 2 comprises control module 1, control module 2, signal transmssion line 3.Control module 1 comprises MCU101, signal receiving end 102, signal sending end 103, received signal change-over circuit 104, sends signaling conversion circuit 105; Control module 2 comprises MCU201, signal receiving end 202, signal sending end 203, received signal change-over circuit 204, sends signaling conversion circuit 205.
Signal receiving end 102,202 is the input port of communication, connect the I/O mouth of MCU101, MCU201 respectively, and the corresponding I/O mouth of this MCU101, MCU201 is made as input state.Signal sending end 103,203 is the delivery outlet of communication, connect the I/O mouth of MCU101, MCU201 respectively, and the corresponding I/O mouth of this MCU101, MCU201 is made as output state.
Received signal change-over circuit and transmission signaling conversion circuit are the triode buffer circuit.Received signal change-over circuit 104 comprises resistance R 1, capacitor C 1, triode TR1, resistance R 11, resistance R 2 and resistance R 8.Send signaling conversion circuit 105 and comprise resistance R 5, R13, R7, capacitor C 2 and triode TR3.Received signal change-over circuit 204 comprises resistance R 4, capacitor C 3, triode TR2, resistance R 12, resistance R 3 and resistance R 9.Send signaling conversion circuit 205 and comprise resistance R 6, R14, R10, capacitor C 4 and triode TR4.
One end of received signal change-over circuit 104 connects signal receiving end 102, and an end that sends signaling conversion circuit 105 connects signal sending end 103; One end of received signal change-over circuit 204 connects signal receiving end 202, and an end that sends signaling conversion circuit 205 connects signal sending end 203.The other end of the other end of received signal change-over circuit 104, transmission signaling conversion circuit 105 is connected with the other end of received signal change-over circuit 204 and the other end of transmission signaling conversion circuit 205 by signal transmssion line 3.
The operating voltage of circuit is 5V, has power line LINE2, LINE3 to be connected 2 of control module 1 and control modules.
The course of work of Fig. 2 circuit is as follows.
When MCU101 when MCU201 sends high level data, send high level toward signal sending end 103, triode TR3 conducting, serial communication interface COMMS1 goes up low level bus of output, and this low level is transferred on the serial communication interface COMMS2 by signal transmssion line 3.Base voltage on the triode TR2 that the resistance value ratio of resistance R 3 and resistance R 9 makes is lower than 0.7V, not conducting of triode TR2, and the level that receives on the signal receiving end 202 is exactly a high level.
When MCU101 when MCU201 sends low-level data, send low level toward signal sending end 103, triode TR3 by, serial communication interface COMMS1 goes up high level of output, be transferred on the serial communication interface COMMS2 by signal transmssion line 3, triode TR2 conducting, low level of input on signal receiving end 202.
In like manner can carry out MCU201 and send low level or high level data to MCU101.By the design of above circuit, can realize the mongline bidirectional transmission signals, formulate and use corresponding communications protocol and just can between two control modules, carry out the exchange of data.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (4)
1. a mongline two-way communication circuit comprises two or more control modules, and each control module comprises at least one signal receiving end and at least one signal sending end, it is characterized in that:
Described each control module also comprises the received signal change-over circuit and sends signaling conversion circuit, one end of described received signal change-over circuit is connected with signal receiving end, one end of described transmission signaling conversion circuit is connected with signal sending end, the described received signal change-over circuit other end is connected with the other end that sends signaling conversion circuit, and is connected with an end that sends signaling conversion circuit with an end of the received signal change-over circuit of another control module by signal transmssion line.
2. mongline two-way communication circuit as claimed in claim 1 is characterized in that: also comprise two power transmission lines that are connected between two control modules.
3. mongline two-way communication circuit as claimed in claim 1 or 2 is characterized in that: described received signal change-over circuit and transmission signaling conversion circuit are the triode buffer circuit.
4. mongline two-way communication circuit as claimed in claim 3 is characterized in that: described control module comprises MCU, and described signal receiving end is connected with the I/O port of MCU respectively with signal sending end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101236581A CN101179398A (en) | 2007-09-28 | 2007-09-28 | Mongline two-way communication circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101236581A CN101179398A (en) | 2007-09-28 | 2007-09-28 | Mongline two-way communication circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101179398A true CN101179398A (en) | 2008-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101236581A Pending CN101179398A (en) | 2007-09-28 | 2007-09-28 | Mongline two-way communication circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN101179398A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104834625A (en) * | 2015-05-28 | 2015-08-12 | 华帝股份有限公司 | Single-wire communication device between two devices and bidirectional communication control method thereof |
| CN106227691A (en) * | 2016-08-09 | 2016-12-14 | 苏交科集团股份有限公司 | A kind of based on the reciprocity bi-directional single-wire serial communication protocol between MCU |
| CN106664270A (en) * | 2015-06-15 | 2017-05-10 | 富士电机株式会社 | Data communication system, data communication device and sensor device |
| CN109617571A (en) * | 2018-11-16 | 2019-04-12 | 中兴通讯股份有限公司 | A kind of signal processing apparatus and its method for realizing signal dispatching |
| CN111769932A (en) * | 2020-06-03 | 2020-10-13 | 小狗电器互联网科技（北京）股份有限公司 | Half-duplex communication circuit, device and electrical equipment |
| WO2024082631A1 (en) * | 2022-10-19 | 2024-04-25 | 广州视源电子科技股份有限公司 | Communication circuit, control method therefor, electrical device, and circuit board |
-
2007
- 2007-09-28 CN CNA2007101236581A patent/CN101179398A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104834625A (en) * | 2015-05-28 | 2015-08-12 | 华帝股份有限公司 | Single-wire communication device between two devices and bidirectional communication control method thereof |
| CN104834625B (en) * | 2015-05-28 | 2018-01-05 | 华帝股份有限公司 | Single-wire communication device between two devices and bidirectional communication control method thereof |
| CN106664270A (en) * | 2015-06-15 | 2017-05-10 | 富士电机株式会社 | Data communication system, data communication device and sensor device |
| CN106664270B (en) * | 2015-06-15 | 2021-01-08 | 富士电机株式会社 | Data communication system, data communication device, and sensor device |
| CN106227691A (en) * | 2016-08-09 | 2016-12-14 | 苏交科集团股份有限公司 | A kind of based on the reciprocity bi-directional single-wire serial communication protocol between MCU |
| CN106227691B (en) * | 2016-08-09 | 2019-03-15 | 苏交科集团股份有限公司 | A kind of reciprocity bi-directional single-wire serial communication method based between MCU |
| CN109617571A (en) * | 2018-11-16 | 2019-04-12 | 中兴通讯股份有限公司 | A kind of signal processing apparatus and its method for realizing signal dispatching |
| CN109617571B (en) * | 2018-11-16 | 2021-10-22 | 中兴通讯股份有限公司 | Signal processing device and method for realizing signal scheduling |
| CN111769932A (en) * | 2020-06-03 | 2020-10-13 | 小狗电器互联网科技（北京）股份有限公司 | Half-duplex communication circuit, device and electrical equipment |
| CN111769932B (en) * | 2020-06-03 | 2023-08-11 | 小狗电器互联网科技（北京）股份有限公司 | Half-duplex communication circuit, device and electrical equipment |
| WO2024082631A1 (en) * | 2022-10-19 | 2024-04-25 | 广州视源电子科技股份有限公司 | Communication circuit, control method therefor, electrical device, and circuit board |
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Open date: 20080514 |