CN109028508B - Power supply communication circuit of air conditioner wire controller - Google Patents
Power supply communication circuit of air conditioner wire controller Download PDFInfo
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- CN109028508B CN109028508B CN201810558810.7A CN201810558810A CN109028508B CN 109028508 B CN109028508 B CN 109028508B CN 201810558810 A CN201810558810 A CN 201810558810A CN 109028508 B CN109028508 B CN 109028508B
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- air conditioner
- power supply
- wire controller
- communication circuit
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- 230000006854 communication Effects 0.000 title claims abstract description 86
- 238000004891 communication Methods 0.000 title claims abstract description 86
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 abstract description 17
- 238000004378 air conditioning Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
本发明属于空调器控制技术领域，具体涉及一种空调线控器供电通讯电路。为了解决现有的空调线控器受集成IC芯片及其匹配的外围电路的限制的问题，本发明的供电通讯电路包括连接在空调线控器与室内机之间的两芯总线，空调线控器与室内机之间的通讯电路和供电电路共用两芯总线，且两芯总线上设置有可控开关；当可控开关处于导通状态时，通讯电路不工作，室内机通过供电电路给空调线控器供电；当可控开关处于关闭状态时，供电电路不工作，室内机与空调线控器通过通讯电路进行通讯。本发明采用电子元器件代替集成IC芯片及其外围电路，在空调室内机板和空调线控器总线上，既可以实现供电又满足通讯的要求，成本低，且无芯片外围器件的严格限制。
The invention belongs to the technical field of air conditioner control, and in particular relates to a power supply communication circuit for an air conditioner wire controller. In order to solve the problem that the existing air conditioner wire controller is limited by the integrated IC chip and its matching peripheral circuit, the power supply communication circuit of the present invention includes a two-core bus connected between the air conditioner wire controller and the indoor unit, and the air conditioner wire controller The communication circuit and power supply circuit between the indoor unit and the indoor unit share a two-core bus, and a controllable switch is set on the two-core bus; when the controllable switch is in the on state, the communication circuit does not work, and the indoor unit supplies the air conditioner through the power supply circuit. The wire controller supplies power; when the controllable switch is in the off state, the power supply circuit does not work, and the indoor unit and the air conditioner wire controller communicate through the communication circuit. The invention uses electronic components to replace the integrated IC chip and its peripheral circuits, and can achieve both power supply and communication requirements on the air conditioner indoor unit board and the air conditioner wire controller bus, with low cost and no strict restrictions on chip peripheral devices.
Description
Technical Field
The invention belongs to the technical field of air conditioner control, and particularly relates to a power supply communication circuit of an air conditioner controller.
Background
The existing air conditioner controllers are divided into two types: one is remote control type, comprising an infrared remote controller and a mainboard controller arranged on the air conditioner body, wherein a user completes the operation through the infrared remote controller or a radio frequency (including wireless communication such as wifi, Bluetooth, zigbee and the like, unidirectional or bidirectional communication) remote controller, and the mainboard controller receives an operation command sent by the infrared remote controller to complete the specific control; the other is a wire controller. The wire controller communication mode is two lines, three lines or multi-line, wherein two cores have no polarity, no limitation is caused to the installation wire sequence, two lines are adopted for power supply and communication, the installation is facilitated, and the wire controller communication method is a better scheme. However, based on a common two-core nonpolar 1192 homebus communication mode, two-core power supply and communication of an air conditioner internal unit and a line controller can be realized, but an integrated IC chip and a matched peripheral circuit thereof, line controllers with different powers and specially customized peripheral devices (inductors) are required, the type selection of the peripheral circuit devices is strict, and the power of the air conditioner line controller is limited; the wire controller which can realize two-core power supply and communication in the market has small power, single function and insufficient display effect; for the wire controller with the display effect and the current increase caused by the function increase, the size and the type of the inductor are difficult to realize or the relay power supply and the communication requirement are additionally increased.
The present invention has been made in view of the above circumstances.
Disclosure of Invention
In order to solve the above problems in the prior art and to solve the problem that the existing air conditioner wire controller is limited by an integrated IC chip and a peripheral circuit matched with the integrated IC chip, the invention provides a power supply communication circuit of the air conditioner wire controller, which comprises a two-core bus connected between the air conditioner wire controller and an indoor unit, and is characterized in that the communication circuit and the power supply circuit between the air conditioner wire controller and the indoor unit share the two-core bus, and a controllable switch is arranged on the two-core bus; when the controllable switch is in a conducting state, the communication circuit does not work, and the indoor unit supplies power to the air conditioner wire controller through the power supply circuit; when the controllable switch is in a closed state, the power supply circuit does not work, and the indoor unit and the air conditioner wire controller are communicated through the communication circuit.
In a preferred embodiment of the above power supply communication circuit of the air conditioner wire controller, the communication circuit is a circuit formed by using an analog device.
In a preferred embodiment of the above-mentioned power supply communication circuit for an air conditioner wire controller, when the controllable switch is in a conducting state, the indoor unit can also charge a capacitor on the air conditioner wire controller through the power supply circuit.
In a preferred embodiment of the above-mentioned power supply communication circuit for an air conditioner wire controller, when the controllable switch is in an off state, the capacitor of the air conditioner wire controller is used for supplying power to the air conditioner wire controller.
In a preferred embodiment of the above power supply communication circuit of the air conditioner wire controller, the power supply circuit and the communication circuit can operate on the two-core bus in a time-sharing manner according to a preset time sequence.
In a preferred embodiment of the power supply communication circuit of the air conditioner wire controller, the controllable switch is a triode, and the triode is connected in parallel with a resistor; and under the condition that the triode is disconnected, the resistor plays a role in current limiting protection.
In a preferred embodiment of the above power supply communication circuit of the air conditioner wire controller, the type of the triode is selected according to the power of the air conditioner wire controller.
In a preferred embodiment of the power supply communication circuit of the air conditioner wire controller, the two-core bus comprises a first bus and a second bus, a relay is connected in series to the first bus, and the wire controller can perform switching between power supply and communication with the indoor unit through conduction of the triode in a state that the relay is conducted.
The power supply communication circuit of the air conditioner wire controller adopts simple electronic components to replace an integrated IC chip and a peripheral circuit thereof, can realize power supply and meet the communication requirement on an air conditioner indoor unit board and an air conditioner wire controller bus, and has low cost and no strict limitation of chip peripheral devices. In addition, the triode is switched on and off to realize power supply and communication switching, and the high-power air-conditioning wire controller and the low-power air-conditioning wire controller can be compatible by utilizing the selection of the universal triode, so that chip peripheral circuit devices such as inductors and the like do not need to be replaced or specially customized due to the power problem of the wire controller.
Drawings
FIG. 1 is a schematic diagram of the structure of the power supply communication circuit of the air conditioner wire controller of the present invention;
FIG. 2 is a schematic diagram of the communication and power supply mechanism of the power supply communication circuit of the air conditioner wire controller of the present invention;
fig. 3 is a detailed structural diagram of an embodiment of a power supply communication circuit of an air conditioner wire controller according to the present invention.
Detailed Description
In order to make the embodiments, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the embodiments are some, but not all embodiments of the present invention. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. Furthermore, it should be noted that the terms "first" and "second" in the present disclosure are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, the power supply communication circuit of the air conditioner line controller of the present invention includes a two-core bus (a first bus + a second bus) connected between the air conditioner line controller and the indoor unit, the communication circuit and the power supply circuit between the air conditioner line controller and the indoor unit share the two-core bus, and the two-core bus is provided with a controllable switch. When the controllable switch is in a conducting state, the communication circuit does not work, and the indoor unit supplies power to the air conditioner wire controller through the power supply circuit; when the controllable switch is in a closed state, the power supply circuit does not work, and the indoor unit and the air conditioner wire controller are communicated through the communication circuit. As an example, the controllable switch is a transistor, and the transistor is connected in parallel with a resistor. The resistor plays a role of current limiting protection under the condition that the triode is disconnected. The power supply and the communication of the invention are realized by adopting the same wire harness, and the mode of the power supply line and the communication line is replaced, thereby reducing the wire harness and reducing the failure rate of wiring.
Compared with the prior art, the power supply communication circuit of the air conditioner wire controller does not need to pass through an inductor, only needs to select a controllable switch such as a triode which is universal in the market, and has no strict current requirement on the air conditioner wire controller, so that the power supply and communication requirements of the wire controller with better display effect and richer functions can be realized. The communication circuit of the present invention is a circuit formed by analog devices (such as an optical coupler and a triode). Compared with the prior art, the power supply communication circuit can realize power supply and communication without adopting an integrated chip, and has no limitation on the type selection of peripheral electronic components.
Specifically, when the triode is conducted, the power supply circuit works, and at the moment, the indoor unit can directly supply power to the air conditioner wire controller and charge the capacitor of the air conditioner wire controller; when the triode is disconnected, the communication circuit works, the air conditioner wire controller utilizes the capacitance of the air conditioner wire controller to supply power, and the communication circuit carries out transceiving communication through a circuit formed by an optical coupler, a triode and other analog devices; after the communication is finished, the triode is normally conducted, and the indoor unit directly supplies power to the air conditioner wire controller and charges a capacitor of the air conditioner wire controller. The invention utilizes the on-off switching power supply circuit and the communication circuit of the triode, and only needs to replace the power supply triode with higher withstand voltage value and current value when the high-power line controller is carried. The power supply communication circuit does not need an IC chip, and simultaneously, a peripheral circuit strictly matched with the chip is saved.
More specifically, referring to fig. 2, in the power supply communication circuit of the air conditioner wire controller of the present invention, power supply and communication are switched in an interrupt timing manner, and work is divided on a two-core bus according to a preset time sequence. The normal communication mechanism is shown in fig. 2, when the synchronization signal is detected, the time is counted for 500us, the air conditioner wire controller sends data, the indoor unit counts the time for 500us, and the indoor unit receives and sends data. Idle is equivalent to no communication, which is the time of power supply. It should be noted that the power supply and communication timing can be determined by software and communication protocol according to the communication rate and the power supply time.
As an example, referring to fig. 1, a relay is connected in series to the first bus, and the line controller can switch between power supply and communication with the indoor unit by conduction of a transistor in a state where the relay is turned on. Thus, the purpose of simultaneously controlling a plurality of indoor units by using the line controller can be achieved. Specifically, under the condition that a plurality of indoor units exist, the indoor units realize the confirmation of a master indoor unit and a slave indoor unit (the master indoor unit is in a controlled state, and the slave indoor units are in other controlled states) in a dialing or automatic competition mode, at the moment, a relay of the master indoor unit is conducted, and the switching of power supply and communication data transmission for the line controller is realized through the conduction and the disconnection of a triode. That is, when there are a plurality of indoor units, and the line controller needs to control one of the indoor units a, the relay of the indoor unit a is turned on, and the relays of the other indoor units are turned off, so as to control the plurality of indoor units simultaneously by using the line controller.
In conclusion, the invention adopts simple electronic components to replace an integrated IC chip and a peripheral circuit thereof, can realize power supply and meet the requirement of communication on an air-conditioning indoor unit board and an air-conditioning line controller bus, and has low cost and no strict limitation of chip peripheral devices. In addition, the triode is switched on and off to realize power supply and communication switching, and the high-power air-conditioning wire controller and the low-power air-conditioning wire controller can be compatible by utilizing the selection of the universal triode, so that chip peripheral circuit devices such as inductors and the like do not need to be replaced or specially customized due to the power problem of the wire controller.
Those skilled in the art can understand that the types of the above components are matched according to actual application requirements, and an appropriate type is selected. In addition, besides the triode, other suitable components can be selected for the controllable switch of the invention, such as a diode, a field transistor and the like.
Referring to fig. 3 as a specific embodiment, fig. 3 is a detailed structural diagram of an embodiment of a power supply communication circuit of an air conditioner wire controller according to the present invention. As shown in fig. 3, in this embodiment, the power supply communication circuit of the air conditioner line controller uses an analog circuit component to replace the integrated chip, and uses simple components such as an optocoupler and a triode to replace the integrated chip and the peripheral circuit of the integrated chip. Power supply and communication are realized by the same wiring harness, the mode of a power supply line and a communication line is replaced, wiring harnesses are reduced, and the failure rate of wiring is reduced. The high-power wire controller can be carried without the limitation of a peripheral circuit of an integrated chip. The triode is conducted, and the indoor unit of the air conditioner directly supplies power to the wire controller and charges the capacitor of the wire controller. And the triode is turned off, the communication circuit works and receives and transmits data. The communication and power supply work in a bus division manner according to a time sequence and are realized by adopting an interruption timing mode. The power supply and communication time sequence can be determined by software according to the communication speed and the power supply time. And matching the component selection according to the actual condition.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (6)
1. A power supply communication circuit of an air conditioner wire controller comprises a two-core bus connected between the air conditioner wire controller and an indoor unit, and is characterized in that the two-core bus is shared by the communication circuit and the power supply circuit between the air conditioner wire controller and the indoor unit, a controllable switch is arranged on the two-core bus, and the controllable switch is a triode;
when the controllable switch is in a conducting state, the communication circuit does not work, and the indoor unit supplies power to the air conditioner wire controller through the power supply circuit;
when the controllable switch is in an off state, the power supply circuit does not work, and the indoor unit and the air conditioner wire controller are communicated through the communication circuit;
wherein the two-core bus comprises a first bus and a second bus, the first bus is connected with a relay in series,
and under the state that the relay is conducted, the wire controller can realize the switching between power supply and communication of the indoor unit through the conduction or non-conduction of the triode.
2. The power supply communication circuit of an air conditioner wire controller according to claim 1, wherein the communication circuit is a circuit composed by using analog devices.
3. The power supply communication circuit of claim 2, wherein when the controllable switch is in the on state, the indoor unit is further capable of charging a capacitor on the air conditioner wire controller through the power supply circuit.
4. The air conditioner drive-by-wire power supply communication circuit of claim 3, wherein when the controllable switch is in an off state, a capacitor of the air conditioner drive-by-wire is used to power the air conditioner drive-by-wire.
5. The power supply communication circuit of an air conditioner wire controller according to claim 3, wherein the power supply circuit and the communication circuit can operate in time division on the two-core bus according to a preset timing.
6. The power supply communication circuit of claim 1, wherein the type of the transistor is selected according to the power level of the air conditioner wire controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810558810.7A CN109028508B (en) | 2018-06-01 | 2018-06-01 | Power supply communication circuit of air conditioner wire controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810558810.7A CN109028508B (en) | 2018-06-01 | 2018-06-01 | Power supply communication circuit of air conditioner wire controller |
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| CN109028508A CN109028508A (en) | 2018-12-18 |
| CN109028508B true CN109028508B (en) | 2021-03-23 |
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| CN111306745B (en) * | 2020-03-02 | 2021-11-12 | 广东美的暖通设备有限公司 | Power supply circuit, control method, air conditioner, and computer-readable storage medium |
| CN111442511B (en) * | 2020-04-08 | 2021-10-26 | 广东美的暖通设备有限公司 | Air conditioner communication control method and device and computer readable storage medium |
| CN111829151B (en) * | 2020-07-29 | 2021-11-30 | 青岛海信日立空调系统有限公司 | Air conditioner |
| CN112268357B (en) * | 2020-10-12 | 2022-06-10 | 青岛海信日立空调系统有限公司 | Air conditioner communication control circuit and air conditioner |
| CN112303806B (en) * | 2020-10-19 | 2023-11-17 | 青岛海信日立空调系统有限公司 | Communication circuit and air conditioner |
| CN113915742B (en) * | 2021-09-08 | 2023-12-22 | 青岛海尔空调电子有限公司 | Communication control method and device for multi-split air conditioning system |
| CN114738942B (en) * | 2022-03-29 | 2024-09-13 | 青岛海尔空调电子有限公司 | Wire controller and control method and device of air conditioning system thereof |
| CN116678089A (en) * | 2023-05-29 | 2023-09-01 | 珠海格力电器股份有限公司 | Control circuit, method, wire controller for air conditioner, air conditioner and storage medium |
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Effective date of registration: 20210111 Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant after: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC Co.,Ltd. |
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