CN108278743A - The communicating circuit and the means of communication of convertible frequency air-conditioner - Google Patents
The communicating circuit and the means of communication of convertible frequency air-conditioner Download PDFInfo
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- CN108278743A CN108278743A CN201711390798.5A CN201711390798A CN108278743A CN 108278743 A CN108278743 A CN 108278743A CN 201711390798 A CN201711390798 A CN 201711390798A CN 108278743 A CN108278743 A CN 108278743A
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- control unit
- firewire
- relay
- alternating current
- conditioner
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Abstract
The invention discloses a kind of communicating circuit of convertible frequency air-conditioner and the means of communication, which includes：Including indoor unit electronic control unit, relay, firewire, the airborne press driver being arranged on the frequency-changeable compressor of outdoor unit；Wherein, indoor unit electronic control unit includes the first zero cross detection circuit and the first control unit of connection, and airborne press driver includes the second zero cross detection circuit and the second control unit of connection；Also relay and firewire are connect first control unit with the second control unit successively；First control unit is used for when the first zero cross detection circuit detects the zero-crossing of alternating current of firewire, and the break-make of relay is controlled according to default make and break period；Second control unit is used for when the second zero cross detection circuit detects the zero-crossing of alternating current of firewire, is carried out control operation according to the control of default make and break period, is realized that information is transmitted.Implementing the present invention can realize that indoor unit electronic control unit and the information of airborne press driver are transmitted on the basis of reducing communication hardware cost.
Description
Technical field
The present invention relates to field of air conditioning, more particularly to the communicating circuit and the means of communication of a kind of convertible frequency air-conditioner.
Background technology
With the increase of raising and environmental consciousness that people require comfort of air conditioner, convertible frequency air-conditioner increasingly obtains
The approval of people, but frequency changer, for determining frequency machine, cost is generally higher.Determining frequency machine outdoor unit does not have electric controller, outdoor
Electrical relay powers on the outdoor that compressor and wind turbine pass through indoor unit electric-controlled plate, specific connection diagram such as Fig. 1.Indoor unit is sentenced
When needing out press surely, electrical relay is set to be attracted, outdoor fan and press obtain electric operation.Frequency changer indoor unit and outdoor unit are all
There is controller, there is corresponding communicating circuit on inside and outside electric controller, to realize that the message exchange of the outer machine of interior machine is transmitted；Outdoor electricity
Control controls compressor and fan operation by the various temperature informations of indoor transmission and the temperature information of the outdoor detected, specifically
Connection diagram is shown in Fig. 2.
From the above, it can be seen that the communication of existing variable-frequency solutions needs the communication module electricity for having special on indoor outside plate
Road, hardware circuit constitutes complexity, of high cost.
Invention content
In view of this, the present invention is intended to provide the communicating circuit and the means of communication of a kind of convertible frequency air-conditioner, to reduce it is logical
The communication of convertible frequency air-conditioner internal-external machine is realized on the basis of news hardware cost.
Specifically, a kind of communicating circuit of convertible frequency air-conditioner of the present invention, including：Indoor unit electronic control unit, relay, fire
Line and the airborne press driver being arranged on the frequency-changeable compressor of outdoor unit；Wherein, indoor unit electronic control unit includes connection
The first zero cross detection circuit and the first control unit, airborne press driver include the second zero cross detection circuit and the of connection
Two control units；Also relay and firewire are connect first control unit with the second control unit successively；First control unit is used for
When the first zero cross detection circuit detects the zero-crossing of alternating current of firewire, the logical of relay is controlled according to default make and break period
It is disconnected；Second control unit is used for when the second zero cross detection circuit detects the zero-crossing of alternating current of firewire, according to default break-make
Period control carries out control operation, realizes that information is transmitted.
The communicating circuit of a kind of means of communication of convertible frequency air-conditioner of the present invention, the convertible frequency air-conditioner is the logical of above-mentioned convertible frequency air-conditioner
Interrogate circuit；The means of communication include：
First control unit is when the first zero cross detection circuit detects the zero-crossing of alternating current of firewire, according to default break-make
Period controls the break-make of relay；
Second control unit is when the second zero cross detection circuit detects the zero-crossing of alternating current of the firewire, according to described
Default make and break period control carries out control operation, realizes that information is transmitted.
The communicating circuit and the means of communication of the convertible frequency air-conditioner of the present invention, on the basis of determining automatically controlled in frequency machine, without increasing
Additional hardware cost, original frequency Electrical Control can be directly as the automatically controlled uses in interior of frequency changer, and online line is logical without increasing
Line is interrogated, exploitation and hardware material cost all have substantial degradation.
Description of the drawings
It is incorporated into specification and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and with
Principle for explaining the present invention together is described.In the drawings, similar reference numeral is for indicating similar element.Under
Attached drawing in the description of face is some embodiments of the present invention, rather than whole embodiments.Those of ordinary skill in the art are come
It says, it without creative efforts, can be obtain other attached drawings according to these attached drawings.
Fig. 1 determines machine electric appliance connection diagram inside and outside frequency machine to be existing；
Fig. 2 is machine electric appliance connection diagram inside and outside existing frequency changer；
Fig. 3 is a kind of structural schematic diagram of the communicating circuit of convertible frequency air-conditioner provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the communicating circuit of another convertible frequency air-conditioner provided in an embodiment of the present invention；
Fig. 5 is the Content of communciation oscillogram of communicating circuit shown in Fig. 4；
Fig. 6 is a kind of flow chart of the means of communication of convertible frequency air-conditioner provided in an embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.It needs
Illustrate, in the absence of conflict, the features in the embodiments and the embodiments of the present application mutually can be combined arbitrarily.
The communicating circuit and system for the convertible frequency air-conditioner that implementation that the invention will now be described in detail with reference to the accompanying drawings is related to.
As shown in figure 3, the present invention is to improve the efficiency of air-conditioning, it is existing determine frequency machine on the basis of, by the fixed frequency compression in outdoor
Machine is changed to frequency-changeable compressor, and press controller is integrated on compressor block；Indoor unit need to only be provided to compressor
220V power supplys, airborne press driver can control press according to certain frequency self-adapting operation.To solve in some cases,
Indoor unit needs to give press controller certain frequency order, allows press to be run according to the interior confidential frequency asked, for example defrost.This
When just need indoor unit to carry out certain information transmission with airborne press driver.It is explained below in conjunction with specific embodiment specific
Communication process.
Embodiment one：
Shown in Figure 4, a kind of communicating circuit of convertible frequency air-conditioner includes：Indoor unit electronic control unit, relay, firewire, with
And the airborne press driver being arranged on the frequency-changeable compressor of outdoor unit；Wherein, the indoor unit electronic control unit includes connection
The first zero cross detection circuit and the first control unit, the airborne press driver include connection the second zero cross detection circuit
With the second control unit；Also the relay and the firewire connect first control unit with second control unit successively
It connects；
First control unit is used to detect the alternating current zero passage of the firewire in first zero cross detection circuit
When point, the break-make of the relay is controlled according to default make and break period；
Second control unit is used to detect the alternating current zero passage of the firewire in second zero cross detection circuit
When point, control operation is carried out according to the default make and break period control, realizes that information is transmitted.
When specific operation, the airborne press driver can also include：Reduction voltage circuit, the firewire pass through the decompression
Circuit is connect with second control unit, and the reduction voltage circuit is used to after reducing the voltage on the firewire be input to described
Second control unit.
The airborne press driver can also include：Voltage hold circuit connect with second control unit, is used for
Electric energy is stored, when the relay disconnects, for the airborne press driver power supply.
The communicating circuit of convertible frequency air-conditioner further includes relay drive circuit, and first control unit passes through the relay
Driving circuit connects the relay.
The period of the alternating current can be 0.02 second.Conducting duration in the default make and break period is equal to or more than institute
State 3 times of the period of alternating current.
The function of communicating circuit each section of convertible frequency air-conditioner is：First control unit Mcu1 and the second control unit Mcu2,
Output for controlling or detecting each module or input signal；First and second zero cross detection circuit, for detecting 220V exchanges
The zero crossing of electricity, with synchronous communication sequential；Relay drive circuit, for driving relay；Relay, for being switched on or off
220V firewires (L)；Voltage hold circuit, when relay disconnects, is supplied for storing electric energy to airborne press drive circuit
Electricity；220V voltages are converted into the low-voltage input signal that Mcu2 can be detected by reduction voltage circuit；The communicating circuit of convertible frequency air-conditioner
The course of work is summarized as follows：
Indoor：Relay-operating time T1；First control unit MCU1 breaks relay after detecting zero cross signal
ETAD expected time of arrival and departure T2, wherein T2 are the integral multiples of 50Hz ac periods；The turn-off time point of relay is broken when detecting zero passage
It opens.After MCU1 detects zero cross signal, it is the integral multiple of 50Hz ac periods to send valid data bit T3, wherein T3,
And T3 >=3t (t indicates the period of 50Hz alternating currents).For example, attracting electric relay T3 timetables registration is according to 1, when disconnecting relay T2
Between indicate data 0, and the time point of actuation and the disconnection of relay be when detecting zero passage be attracted or disconnect, specific waveform is such as
Shown in Fig. 5.
Press side：For first control unit MCU2 then according to zero cross signal, detection judgement time T2 and T3 complete decoding school
It tests, to realize that interior machine and the information of airborne press driver transmit.
The present embodiment indoor unit is not increasing additional hardware circuit, only utilizes and originally determined electrical relay on the press of frequency machine
And the online line firewire (L) of internal-external machine and zero cross detection circuit, realize in machine and airborne press driver communication.The program
It directly borrows the indoor Electrical Control of fixed frequency to be not necessarily to increase the indoor and outdoor communicating circuit that current frequency changer needs, utilizes the relay for determining frequency machine
The communication with airborne compressor drive can be completed in device and original online line, without Electrical Control structure in change, without increasing
Indoor and outdoor connection can reduce the development cost and hardware material cost of frequency changer to greatest extent.
Embodiment two：
Shown in Figure 6, a kind of means of communication of convertible frequency air-conditioner are applied to the communicating circuit of above-mentioned convertible frequency air-conditioner, above-mentioned
The explanation of communicating circuit is also applied for the present embodiment；The means of communication include：
First control unit is when the first zero cross detection circuit detects the zero-crossing of alternating current of firewire, according to default break-make
Period controls the break-make of relay；
Second control unit is when the second zero cross detection circuit detects the zero-crossing of alternating current of the firewire, according to described
Default make and break period control carries out control operation, realizes that information is transmitted.
Specifically, first control unit is when the first zero cross detection circuit detects the zero-crossing of alternating current of firewire,
According to default make and break period control relay break-make the step of include：
First control unit is when the first zero cross detection circuit detects the zero-crossing of alternating current of firewire, according to default
Make and break period controls the first preset duration of disconnection of relay；First preset duration is the first integral multiple of the alternating current
Cycle duration；
First control unit is when the first zero cross detection circuit detects the zero-crossing of alternating current of firewire, according to default
Make and break period controls the second preset duration of conducting of relay；First preset duration and the second preset duration and be described
Default make and break period, second preset duration are the second integral multiple cycle duration of the alternating current.
The present embodiment is to utilize original room for determining frequency machine determining frequency indoor unit in the case where not increasing additional hardware circuit
Electrical relay and online line firewire (L) and zero cross detection circuit on outer machine realize interior Electrical Control and airborne press driver
Communication.The program directly borrows the indoor Electrical Control of fixed frequency, without electromechanical control box structure in change, without increasing indoor and outdoor communication
Line can reduce the development cost and hardware material cost of frequency changer to greatest extent.
It will appreciated by the skilled person that realizing all or part of step/units/modules of above-described embodiment
It can be completed by the relevant hardware of program instruction, foregoing routine can be stored in computer read/write memory medium, should
When being executed, it includes the step corresponded in above-described embodiment each unit to execute to program；And storage medium above-mentioned includes：ROM、
The various media that can store program code such as RAM, magnetic disc or optical disc.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical solution and advantageous effect
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the present invention
Within the scope of shield.
Claims (10)
1. a kind of communicating circuit of convertible frequency air-conditioner, including indoor unit electronic control unit, relay and firewire, which is characterized in that institute
The communicating circuit for stating convertible frequency air-conditioner further includes：The airborne press driver being arranged on the frequency-changeable compressor of outdoor unit；
Wherein, the indoor unit electronic control unit includes the first zero cross detection circuit and the first control unit of connection, described airborne
Press driver includes the second zero cross detection circuit and the second control unit of connection；First control unit is also described successively
Relay and the firewire are connect with second control unit；
First control unit is used for when first zero cross detection circuit detects the zero-crossing of alternating current of the firewire,
The break-make of the relay is controlled according to default make and break period；
Second control unit is used for when second zero cross detection circuit detects the zero-crossing of alternating current of the firewire,
Control operation is carried out according to the default make and break period control, realizes that information is transmitted.
2. the communicating circuit of convertible frequency air-conditioner as described in claim 1, which is characterized in that the airborne press driver also wraps
It includes：Reduction voltage circuit, the firewire are connect by the reduction voltage circuit with second control unit, and the reduction voltage circuit is used for will
Voltage on the firewire is input to second control unit after reducing.
3. the communicating circuit of convertible frequency air-conditioner as claimed in claim 1 or 2, which is characterized in that the airborne press driver is also
Including：Voltage hold circuit is connect with second control unit, for storing electric energy, when the relay disconnects, for institute
State airborne press driver power supply.
4. the communicating circuit of convertible frequency air-conditioner as claimed in claim 3, which is characterized in that further include relay drive circuit, institute
It states the first control unit and the relay is connected by the relay drive circuit.
5. the communicating circuit of convertible frequency air-conditioner as claimed in claim 4, which is characterized in that the period of the alternating current is 0.02
Second.
6. the communicating circuit of convertible frequency air-conditioner as claimed in claim 5, which is characterized in that the conducting in the default make and break period
Duration is equal to or more than 3 times of the period of the alternating current.
7. a kind of means of communication of convertible frequency air-conditioner, which is characterized in that the communicating circuit of the convertible frequency air-conditioner is in claim 1-6
The communicating circuit of any one of them convertible frequency air-conditioner；The means of communication include：
First control unit is when the first zero cross detection circuit detects the zero-crossing of alternating current of firewire, according to default make and break period
Control the break-make of relay；
Second control unit is when the second zero cross detection circuit detects the zero-crossing of alternating current of the firewire, according to described default
Make and break period control carries out control operation, realizes that information is transmitted.
8. the means of communication as claimed in claim 7, which is characterized in that first control unit is in the first zero cross detection circuit
When detecting the zero-crossing of alternating current of firewire, according to default make and break period control relay break-make the step of include：
First control unit is when the first zero cross detection circuit detects the zero-crossing of alternating current of firewire, according to default break-make
Period controls the first preset duration of disconnection of relay；First preset duration is the first integer doubling time of the alternating current
Duration；
First control unit is when the first zero cross detection circuit detects the zero-crossing of alternating current of firewire, according to default break-make
Period controls the second preset duration of conducting of relay；First preset duration and the second preset duration and be described default
Make and break period, second preset duration are the second integral multiple cycle duration of the alternating current.
9. the means of communication as claimed in claim 8, which is characterized in that the period of the alternating current is 0.02 second.
10. the means of communication as claimed in claim 9, which is characterized in that second integral multiple is more than or equal to 3 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711390798.5A CN108278743B (en) | 2017-12-21 | 2017-12-21 | Communication circuit and communication method of variable frequency air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711390798.5A CN108278743B (en) | 2017-12-21 | 2017-12-21 | Communication circuit and communication method of variable frequency air conditioner |
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| Publication Number | Publication Date |
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| CN108278743A true CN108278743A (en) | 2018-07-13 |
| CN108278743B CN108278743B (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711390798.5A Active CN108278743B (en) | 2017-12-21 | 2017-12-21 | Communication circuit and communication method of variable frequency air conditioner |
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Cited By (2)
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| CN110762808A (en) * | 2019-10-31 | 2020-02-07 | 广东美的制冷设备有限公司 | Drive control circuit and air conditioner |
| CN115076938A (en) * | 2022-06-23 | 2022-09-20 | 海信（广东）空调有限公司 | Indoor and outdoor unit communication circuit, air conditioner and communication control method of air conditioner |
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| Publication number | Publication date |
|---|---|
| CN108278743B (en) | 2020-10-09 |
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Effective date of registration: 20210108 Address after: 266101 Haier Industrial Park, 1 Haier Road, Shandong, Qingdao Patentee after: QINGDAO HAIER TECHNOLOGY Co.,Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee before: QINGDAO HAIER TECHNOLOGY Co.,Ltd. |
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Address after: 266101 Haier Road, Laoshan District, Qingdao, Qingdao, Shandong Province, No. 1 Patentee after: Qingdao Haier Technology Co., Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Shandong, Qingdao Patentee before: Qingdao Haier Technology Co., Ltd. Patentee before: Haier Zhijia Co.,Ltd. |
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