CN2522776Y - Polar-less connection circuit of multi-on-line coditioner communication network - Google Patents
Polar-less connection circuit of multi-on-line coditioner communication network Download PDFInfo
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- CN2522776Y CN2522776Y CN 02203174 CN02203174U CN2522776Y CN 2522776 Y CN2522776 Y CN 2522776Y CN 02203174 CN02203174 CN 02203174 CN 02203174 U CN02203174 U CN 02203174U CN 2522776 Y CN2522776 Y CN 2522776Y
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Abstract
The utility model relates to a polar-less connection circuit of a multi-on-line conditioner communication network, which comprises an MCU, a resistor, a capacitance, an optical coupler and a 485 chip N1, wherein the MCU is connected with the 485 chip N1 by the optical coupler. The utility model also comprises a logic control LC and a 485 chip N2. The controlling port of the MCU is connected with the input end of the logic control LC by the optical coupler, the input end of the logic control LC is connected with an A and a B input ends which are used for controlling the 485 chips N1 and N2, the A port of the 485 chip N1 is connected with the B port of the 485 chip N2, and the B port of the 485 chip N1 is connected with the A port of the 485 chip N2. The utility model realizes the non-polar connection of the bus, and solves the problem of the communication failure caused by the wrong connection of the communicating polarity in the circuitry. Thus, the construction is convenient, and the requirement to the constructor in the mounting technique is reduced.
Description
Technical field
The utility model relates to the nonpolarity connecting circuit of a kind of multi-gang air-conditioner communication network.
Background technology
Now, people by 485 communications, just adopt a kind of polarity to connect between variable-frequency central air conditioner indoor set and two MCU of off-premises station, and what adopt usually is one 485 chip, and the communication port of indoor set MCU is linked to each other with 485 chips by photo-coupler.
Specifically as shown in Figure 1, the communication port 1 of indoor set MCU connects the base stage among the photo-coupler E101, being connected to parallel resistor R1 and capacitor C 1 simultaneously connects+5 volts of power supplys, grounded emitter, the positive pole of the light emitting diode among the photo-coupler E101 connects+12 volts of power supplys by resistance R 2, negative pole connects the RO mouth of 485 chip N1, the communication port 2 of indoor set MCU connects the negative pole of the light emitting diode among the photo-coupler E102, the positive pole of light emitting diode connects+5 volts of power supplys by resistance R 3, base stage connects+12 volts of power supplys by parallel resistor R4 and capacitor C 2, connect the DI mouth of 485 chips simultaneously, the A mouth of 485 chip N1 is connected 2 lines of news medium XP1, the B mouth of 485 chip N1 is connected 1 line of news medium XP1, control mouth 3 connects the negative pole of the light emitting diode among the photo-coupler E103, the positive pole of light emitting diode connects+5 volts of power supplys by resistance R 5, base stage connects+12 volts of power supplys by resistance R 6, connect the RE mouth of 485 chips simultaneously, control mouth 4 connects the negative pole of the light emitting diode among the photo-coupler E104, the positive pole of light emitting diode connects+5 volts of power supplys by resistance R 7, base stage connects+12 volts of power supplys by resistance R 8, connects the DE mouth of 485 chips simultaneously.
Its wiring work wiring diagram as shown in Figure 2, when installing and using with the connection of two 485 communicating circuits by connection XP1, the A mouth of 485 chips links to each other with the B mouth with A mouth, B mouth, need to determine polarity, just the line of the A in 485 chips, B mouth has certain sequence, by it is when having between a plurality of MCU by 485 bus communications, if each unit is not in the same localities, just easy when mounted A, B mouth and communication media XP1 line wrong with 485 chips, thereby cause communication failure, make troubles to construction.
How could solve the trouble in this wiring, make things convenient for installation, be the primary at present problem that solves.
Summary of the invention
The purpose of this utility model is to provide a kind of multi-gang air-conditioner communication network nonpolarity connecting circuit, can realize nonpolarity connection between many indoor set MCU by this connecting circuit.
For achieving the above object, the technical solution adopted in the utility model is as follows:
The nonpolarity connecting circuit of a kind of multi-gang air-conditioner communication network, it includes MCU communication port 1,2, control mouth 3,4, resistance R 1, R2,3, R4, R5, R6, R7, R8, capacitor C 1, C2, photo-coupler E101, E102, E103, E104 and 485 chip N1, described MCU links to each other with 485 chip N1 by photo-coupler, it also includes a logic control LC and 485 chip N2, described MCU control mouth 3,4 by photo-coupler E103, E104 links to each other with the input of logic control LC, the A mouth of 485 chip N1 links to each other with the B mouth of 485 chip N2, and the B mouth of 485 chip N1 links to each other with the A mouth of 485 chip N2.
The input of described logic control LC links to each other with the A that is used to control 485 chip N1, N2, B input, the RE mouth of the output a1 termination 485 chip N1 of LC, the DE mouth of b1 termination 485 chip N1, the RE mouth of a2 termination 485 chip N2, the DE mouth of b2 termination 485 chip N2.
Described MCU control mouthfuls 3 links to each other with light emitting diode negative pole among the photo-coupler E103, light emitting diode among the photo-coupler E103 is anodal to link to each other with working power by resistance R 5, colelctor electrode among the photo-coupler E103 links to each other with working power by resistance R 6, links to each other with the A mouth of logic control LC simultaneously.
Described control MCU control mouthfuls 4 links to each other with light emitting diode negative pole among the photo-coupler E104, light emitting diode among the photo-coupler E104 is anodal to link to each other with working power by resistance R 7, colelctor electrode among the photo-coupler E104 links to each other with working power by resistance R 8, links to each other with the B mouth of logic control LC simultaneously.
Be connected photo-coupler E101 and resistance R 2 of described 485 RO mouths chip N1 and N2 connects working power, and described 485 DI mouths chip N1 and N2 were connected and connect working power after parallel resistor R4 and the capacitor C 2.
The use the beneficial effects of the utility model are: by logic control element and mutual reversal connection 485 bus control units of two-way that increase, realize the nonpolarity connection of bus, even it is in construction that 485 bus interface are anti-, can the communication of whole circuit not impacted yet, solved the problem of the communication failure that causes because of communication polarity wrong in the circuit, convenient construction has reduced the requirement on mounting technique to the workmen.
Description of drawings:
Fig. 1 is the multi-gang air-conditioner communication network line polarity catenation principle figure that uses always.
Fig. 2 is the multi-gang air-conditioner communication network line polarity connection work wiring diagram of using always.
Fig. 3 is the nonpolarity connecting circuit schematic diagram of the utility model multi-gang air-conditioner communication network circuit.
Fig. 4 is the nonpolarity connection work of a utility model multi-gang air-conditioner communication network circuit wiring diagram.
The specific embodiment
Exemplify a preferred embodiment below, conjunction with figs. is elaborated as follows to the utility model.
The utility model is on the basis of existing technology, increases a logic control LC and 485 chip N2, and its circuit theory diagrams as shown in Figure 3.
The choosing value that each components and parts adopts is: resistance is 1000 ohm resistance R 1, resistance R 2, the R3 that resistance is 360 ohm, resistance is 4700 ohm a resistance R 4, capacity is capacitor C 1, the C2 of 1 nanofarad, model is photo-coupler E101, E102, E103, the E104 of SFH615, model is 485 chip N1, the N2 of MAXIM1487, resistance is 270 ohm resistance R 5, R6, R7, R8, and model is 485 chip N1, the N2 of MAXIM1487.
The communication port 1 of indoor set MCU connects+12 volts of power supplys by the capacitor C 1 and the resistance R 1 of parallel connection, connect the colelctor electrode among the photo-coupler E101 simultaneously, the positive pole of the light emitting diode among the photo-coupler E101 connects+12 volts of power supplys by resistance R 2, and negative pole connects the RO mouth of 485 chip N1, N2; The negative pole of the light emitting diode among communication port 2 and the photo-coupler E102 links to each other, positive pole connects+5 volts of power supplys by resistance R 3, colelctor electrode among the photo-coupler E102 connects+12 volts of power supplys by parallel resistor R4 and capacitor C 2, connect the DI mouth of 485 chip N1, N2 simultaneously, the grounded emitter among photo-coupler E101, the E102.
The control mouth 3 of indoor set MCU connects the negative pole of the light emitting diode of photo-coupler E103, and positive pole connects+5 volts of power supplys by resistance R 5, and the colelctor electrode among the photo-coupler E103 connects+12 volts of power supplys by resistance R 6, connects the A mouth of logic controller LC simultaneously; Control mouth 4 connects the negative pole of the light emitting diode of photo-coupler E104, positive pole connects+5 volts of power supplys by resistance R 7, colelctor electrode among the photo-coupler E103 connects+12 volts of power supplys by resistance R 8, connect the B mouth of logic controller LC simultaneously, photo-coupler E103, grounded emitter among the E104, the a1 mouth of logic controller LC connects the RE mouth of 485 chip N1, the b1 mouth connects the DE mouth of 485 chips, the a2 mouth connects the RE mouth of 485 chip N2, the b2 mouth connects the DE mouth of 485 chip N2, after linking to each other with the B mouth of N2, connects in the A mouth of 485 chip N1 2 lines of news medium XP1, after linking to each other with the A mouth of N2, connects in the B mouth of 485 chip N1 1 line of news medium XP1, in addition, connect 2 lines of news medium XP1 by a resistance R 9 at 1 line of communication media XP1.
Work wiring diagram of the present utility model as shown in Figure 4, above-mentioned two nonpolarity connecting circuits link to each other by communication media XP1, its 1 line links to each other with 1 line, 2 lines link to each other with 2 lines, to realize two communications between the MCU.
Operation principle of the present utility model is as follows: the control mouth 3,4 of indoor set MCU receives signal, be transported on the light emitting diode of photo-coupler E103, E104, by the colelctor electrode among light emitting diode triggering photo-coupler E103, the E104, current signal is transported to input A, the B mouth of logic controller LC, process logic controller LC is to Signal Processing, its output signal has following four kinds of situations to the control of 485 chip N1, N2, and it is as shown in the table:
| AB | N1 | N2 |
| 00 | High resistant | Send |
| 01 | High resistant | Receive |
| 10 | Send | High resistant |
| 11 | Receive | High resistant |
That is to say, one 485 chip is in running order, another 485 chip is in high-impedance state, because port A, the B reversal connection of two 485 chips, that is to say the communication line reversal connection, the signal that 485 chips receive is judged the Content of communciation mistake or is judged certain positional fault by the software of logic controller LC, decides by some 485 chips wherein and export or acknowledge(ment) signal.
When sending signal, the communication port 2 of indoor set MCU sends signal, photo-coupler E102 triggering and conducting, and signal sends to any one DI mouth of two 485 chips from colelctor electrode; When received signal, any one RO mouth of two 485 chips sends signal, delivers on the light emitting diode among the photo-coupler E101, triggers colelctor electrode by light emitting diode, signal is delivered in the communication port 1 of indoor set MCU.
By reversal connection and the logic control element of two 485 chip port A, B, judge the mistake of Content of communciation or position, realized the nonpolarity connection of multi-gang air-conditioner communication network.
Claims (5)
1. nonpolarity connecting circuit of multi-gang air-conditioner communication network, it includes MCU communication port 1,2, control mouth 3,4, resistance R 1, R2,3, R4, R5, R6, R7, R8, capacitor C 1, C2, photo-coupler E101, E102, E103, E104 and 485 chip N1, described MCU links to each other with 485 chip N1 by photo-coupler, it is characterized in that, it also includes a logic control LC and 485 chip N2, described MCU control mouth 3,4 by photo-coupler E103, E104 links to each other with the input of logic control LC, the A mouth of 485 chip N1 links to each other with the B mouth of 485 chip N2, and the B mouth of 485 chip N1 links to each other with the A mouth of 485 chip N2.
2. the nonpolarity connecting circuit of a kind of multi-gang air-conditioner communication network according to claim 1, it is characterized in that, the input of described logic control LC links to each other with the A that is used to control 485 chip N1, N2, B input, the RE mouth of the output a1 termination 485 chip N1 of LC, the DE mouth of b1 termination 485 chip N1, the RE mouth of a2 termination 485 chip N2, the DE mouth of b2 termination 485 chip N2.
3. the nonpolarity connecting circuit of a kind of multi-gang air-conditioner communication network according to claim 1, it is characterized in that, described MCU control mouthfuls 3 links to each other with light emitting diode negative pole among the photo-coupler E103, light emitting diode among the photo-coupler E103 is anodal to link to each other with working power by resistance R 5, colelctor electrode among the photo-coupler E103 links to each other with working power by resistance R 6, links to each other with the A mouth of logic control LC simultaneously.
4. the nonpolarity connecting circuit of a kind of multi-gang air-conditioner communication network according to claim 1, it is characterized in that, described control MCU control mouthfuls 4 links to each other with light emitting diode negative pole among the photo-coupler E104, light emitting diode among the photo-coupler E104 is anodal to link to each other with working power by resistance R 7, colelctor electrode among the photo-coupler E104 links to each other with working power by resistance R 8, links to each other with the B mouth of logic control LC simultaneously.
5. the nonpolarity connecting circuit of a kind of multi-gang air-conditioner communication network according to claim 1, it is characterized in that, be connected photo-coupler E101 and resistance R 2 of described 485 RO mouths chip N1 and N2 connects working power, and described 485 DI mouths chip N1 and N2 were connected and connect working power after parallel resistor R4 and the capacitor C 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02203174 CN2522776Y (en) | 2002-02-09 | 2002-02-09 | Polar-less connection circuit of multi-on-line coditioner communication network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02203174 CN2522776Y (en) | 2002-02-09 | 2002-02-09 | Polar-less connection circuit of multi-on-line coditioner communication network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2522776Y true CN2522776Y (en) | 2002-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02203174 Expired - Fee Related CN2522776Y (en) | 2002-02-09 | 2002-02-09 | Polar-less connection circuit of multi-on-line coditioner communication network |
Country Status (1)
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| CN (1) | CN2522776Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075782A (en) * | 2012-12-20 | 2013-05-01 | 四川长虹电器股份有限公司 | Non-polar power supplying communication system of multi-connection type air conditioner |
| CN103219986A (en) * | 2013-03-04 | 2013-07-24 | 海信科龙电器股份有限公司 | Polarity insensitive transmit-receive unit and RS-485 communication circuit |
| CN103758509A (en) * | 2014-01-01 | 2014-04-30 | 北京航空航天大学 | Non-contact electromagnetic coupling digital differential communicating device suitable for well drilling rod |
| CN112696742A (en) * | 2021-02-02 | 2021-04-23 | 青岛海信日立空调系统有限公司 | Air conditioner |
-
2002
- 2002-02-09 CN CN 02203174 patent/CN2522776Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075782A (en) * | 2012-12-20 | 2013-05-01 | 四川长虹电器股份有限公司 | Non-polar power supplying communication system of multi-connection type air conditioner |
| CN103219986A (en) * | 2013-03-04 | 2013-07-24 | 海信科龙电器股份有限公司 | Polarity insensitive transmit-receive unit and RS-485 communication circuit |
| CN103219986B (en) * | 2013-03-04 | 2016-04-20 | 海信科龙电器股份有限公司 | A kind of nonpolarity Transmit-Receive Unit and RS-485 communicating circuit |
| CN103758509A (en) * | 2014-01-01 | 2014-04-30 | 北京航空航天大学 | Non-contact electromagnetic coupling digital differential communicating device suitable for well drilling rod |
| CN103758509B (en) * | 2014-01-01 | 2016-04-06 | 北京航空航天大学 | A kind of digital differential communication device being applicable to the non-contact electromagnetic coupling of drilling well drilling rod |
| CN112696742A (en) * | 2021-02-02 | 2021-04-23 | 青岛海信日立空调系统有限公司 | Air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HISENSE( SHANDONG ) AIR CONDITIONING CO., LTD. Free format text: FORMER OWNER: HAIXIN GROUP CO., LTD.; PATENTEE Effective date: 20080530 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080530 Address after: Hisense building, 17 Donghai West Road, Shandong, Qingdao Province, China: 266071 Patentee after: Hisense (Shandong) Air-Conditioning Co., Ltd. Address before: Hisense building, 17 Donghai West Road, Shandong, Qingdao Province, China: 266071 Co-patentee before: Haisense Air Conditioner Co., Ltd., Qingdao Patentee before: Hisense Group |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20021127 Termination date: 20110209 |