CN207527789U - A kind of HomeBus interface circuits - Google Patents
A kind of HomeBus interface circuits Download PDFInfo
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- CN207527789U CN207527789U CN201721546161.6U CN201721546161U CN207527789U CN 207527789 U CN207527789 U CN 207527789U CN 201721546161 U CN201721546161 U CN 201721546161U CN 207527789 U CN207527789 U CN 207527789U
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- homebus
- switch
- interface circuits
- interfaces
- impedance circuit
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Abstract
The utility model discloses a kind of HomeBus interface circuits, it is arranged between air-conditioning microprocessor and HomeBus interfaces, the air-conditioning microprocessor is connect with HomeBus interfaces, the HomeBus interface circuits include impedance circuit and first switch, and the first switch is connected in parallel after connecting with impedance circuit with HomeBus interfaces.A kind of HomeBus interface circuits of the utility model, by setting impedance circuit and first switch, when air-conditioning microprocessor and HomeBus interfaces carry out long haul communication, impedance circuit is accessed in circuit by first switch, impedance circuit short circuit is to reduce signal reflex, the stability of signal transmission is improved, to realize long haul communication.
Description
Technical field
The utility model is related to HomeBus interface fields, especially a kind of HomeBus interface circuits.
Background technology
In modern central air conditioner system, line control machine is generally all communicated using HomeBus interfaces with air-conditioner host, due to
Air-conditioner host is often mounted on outdoor, and in the case of long range cabling, signal attenuation can be generated, it between the two can not be just
Often communicated.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide a kind of HomeBus interface circuits, for
During telecommunication, the signal stabilization between HomeBus interfaces and air-conditioning microprocessor is improved, realizes long haul communication.
Technical solution is used by the utility model：A kind of HomeBus interface circuits, be arranged on air-conditioning microprocessor and
Between HomeBus interfaces, the air-conditioning microprocessor is connect with HomeBus interfaces, and the HomeBus interface circuits include impedance
Circuit and first switch, the first switch are connected in parallel after connecting with impedance circuit with HomeBus interfaces.
Further, the HomeBus interface circuits further include fuse, the HomeBus interfaces by fuse with
Air-conditioning microprocessor connects.
Further, the HomeBus interface circuits further include second switch, and the second switch and the fuse are simultaneously
Connection connection.
Further, the first switch and/or second switch are toggle switch.
Further, the first switch and second switch are 2 toggle switch.
Further, the HomeBus interface circuits further include protection circuit, the protection circuit and HomeBus interfaces
It is connected in parallel.
Further, the protection circuit includes the first varistor, the second varistor, the first zener diode and the
Two zener diodes, one end of first varistor and the first connecting pin of HomeBus interfaces, the one of the second varistor
End connection；The other end of first varistor is connect with one end of the first zener diode；Second varistor
The other end is connect with one end of the second zener diode；The other end of first zener diode and the second zener diode
The second connection end connection of the other end, HomeBus interfaces.
Further, the impedance circuit includes first resistor and the first capacitance, and the first resistor and the first capacitance are simultaneously
Connection connection.
The beneficial effects of the utility model are：
A kind of HomeBus interface circuits of the utility model, by setting impedance circuit and first switch, in air-conditioning microprocessor
When device carries out long haul communication with HomeBus interfaces, impedance circuit is accessed in circuit by first switch, impedance circuit short circuit
To reduce signal reflex, the stability of signal transmission is improved, to realize long haul communication.
Description of the drawings
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is an a kind of specific embodiment structure diagram of HomeBus interface circuits of the utility model；
Fig. 2 is an a kind of specific embodiment circuit diagram of HomeBus interface circuits of the utility model.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.
A kind of HomeBus interface circuits, are arranged between air-conditioning microprocessor and HomeBus interfaces, air-conditioning microprocessor
It is connect with HomeBus interfaces, HomeBus interface circuits include impedance circuit and first switch, first switch and impedance circuit string
It is connected in parallel after connection with HomeBus interfaces.A kind of HomeBus interface circuits of the utility model, by setting impedance circuit and
One switch when air-conditioning microprocessor and HomeBus interfaces carry out long haul communication, accesses impedance circuit, impedance circuit short circuit
To reduce signal reflex, the stability of signal transmission is improved, to realize long haul communication.With reference to figure 1, Fig. 1 is the utility model
A kind of one specific embodiment structure diagram of HomeBus interface circuits, first switch is toggle switch, is controlled by toggle switch
Whether impedance circuit processed is accessed in circuit, easy to operate, and reliability is high.
It is a kind of HomeBus interfaces of the utility model with reference to figure 1 and Fig. 2, Fig. 2 as being further improved for technical solution
One specific embodiment circuit diagram of circuit, first switch are the toggle switch SP1 of 2, and impedance circuit includes first resistor
RP1 and the first capacitance CP1, first resistor RP1 and the first capacitance CP1 are connected in parallel, in the present embodiment, first after being connected in parallel
Resistance RP1 and first capacitance CP1 one end are connect with the second connection end HomebusA of HomeBus interfaces, and the other end is opened with dial-up
Close one end connection of the first switch of SP1, the other end of the first switch of toggle switch and the first connecting pin of HomeBus interfaces
HomebusB connections.In the case of long haul communication, by connecting toggle switch SP1, impedance circuit is accessed, is realized
75ohm between the second connection end Homebus A of first connecting pin Homebus B and HomeBus interfaces of HomeBus interfaces
Impedance matching improves signal quality, realizes long range normal communication.
As being further improved for technical solution, fuse F1 is further included with reference to figure 1 and Fig. 2, HomeBus interface circuit,
In the present embodiment, the first connecting pin HomebusB of HomeBus interfaces is connect by fuse F1 with air-conditioning microprocessor, i.e., logical
The JP2 interfaces crossed in Fig. 2 are connect with air-conditioning microprocessor.Take a policy silk, it is ensured that when electric current is excessive, fuse is blown, electricity
Road is disconnected, other circuits is protected not damaged by high current.
As being further improved for technical solution, second switch is further included with reference to figure 1 and Fig. 2, HomeBus interface circuit,
Second switch is connected in parallel with fuse.In the present embodiment, second switch is toggle switch, and first switch and second switch share
The toggle switch SP1 of one 2, first switch and second switch are respectively a switch of 2 toggle switch.Toggle switch
The second switch of SP1 is connected in parallel on the both ends of fuse F1.Fuse F1 be burned cause communication disconnect in the case of, by closing
The second switch of toggle switch SP1 is closed, fuse F1 is bypassed, system restores communication, enables the system to continue communication work；
Protection circuit ensures that HomeBus interfaces are without damage in external lightning surge interference, ensures normal communication, is won for system repairing
The time is obtained, avoids generating unnecessary loss.
As being further improved for technical solution, protection circuit is further included with reference to figure 1 and Fig. 2, HomeBus interface circuit,
Protection circuit is connected in parallel with HomeBus interfaces.Protect circuit include the first varistor VDR1, the second varistor VDR2,
The of one end of first zener diode DP1 and the second zener diode DP2, the first varistor VDR1 and HomeBus interfaces
One end connection of one connecting pin HomebusB, the second varistor VDR2；The other end of first varistor VDR1 and first is surely
Press one end connection of diode DP1；The other end of second varistor VDR2 is connect with one end of the second zener diode DP2；
The second connection end of the other end of the other end of first zener diode DP1 and the second zener diode DP2, HomeBus interfaces
HomebusA connections.It is more than 360V, varistor action, the first zener diode DP1 and the in the interference of external surge
Two zener diode DP2 are the first connecting pin HomebusB and second connection end HomebusA maximum voltages clamper in 700V, guarantor
Demonstrate,prove the stabilization of circuit voltage.
It is that the preferable of the utility model is implemented to be illustrated, but the invention is not limited to the reality above
Example is applied, those skilled in the art can also make various equivalent variations without departing from the spirit of the present invention
Or replace, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (8)
1. a kind of HomeBus interface circuits, are arranged between air-conditioning microprocessor and HomeBus interfaces, the air-conditioning microprocessor
Device is connect with HomeBus interfaces, which is characterized in that the HomeBus interface circuits include impedance circuit and first switch, described
First switch is connected in parallel after connecting with impedance circuit with HomeBus interfaces.
2. HomeBus interface circuits according to claim 1, which is characterized in that the HomeBus interface circuits further include
Fuse, the HomeBus interfaces are connect by fuse with air-conditioning microprocessor.
3. HomeBus interface circuits according to claim 2, which is characterized in that the HomeBus interface circuits further include
Second switch, the second switch are connected in parallel with the fuse.
4. HomeBus interface circuits according to claim 3, which is characterized in that the first switch and/or second switch
For toggle switch.
5. HomeBus interface circuits according to claim 3, which is characterized in that the first switch and second switch are
One 2 toggle switch.
6. HomeBus interface circuits according to claim 1, which is characterized in that the HomeBus interface circuits further include
Circuit is protected, the protection circuit is connected in parallel with HomeBus interfaces.
7. HomeBus interface circuits according to claim 5, which is characterized in that it is pressure-sensitive that the protection circuit includes first
Resistance, the second varistor, the first zener diode and the second zener diode, one end of first varistor with
First connecting pin of HomeBus interfaces, one end connection of the second varistor；The other end and first of first varistor
One end connection of zener diode；The other end of second varistor is connect with one end of the second zener diode；It is described
The other end of first zener diode is connect with the other end of the second zener diode, the second connection end of HomeBus interfaces.
8. HomeBus interface circuits according to any one of claims 1 to 7, which is characterized in that the impedance circuit includes
First resistor and the first capacitance, the first resistor and the first capacitance are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721546161.6U CN207527789U (en) | 2017-11-15 | 2017-11-15 | A kind of HomeBus interface circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721546161.6U CN207527789U (en) | 2017-11-15 | 2017-11-15 | A kind of HomeBus interface circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207527789U true CN207527789U (en) | 2018-06-22 |
Family
ID=62582428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721546161.6U Active CN207527789U (en) | 2017-11-15 | 2017-11-15 | A kind of HomeBus interface circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207527789U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111854071A (en) * | 2020-06-09 | 2020-10-30 | 海信（山东）空调有限公司 | Switch input circuit and air conditioner |
| CN112303805A (en) * | 2020-10-19 | 2021-02-02 | 青岛海信日立空调系统有限公司 | Communication circuit and air conditioner |
| CN112303806A (en) * | 2020-10-19 | 2021-02-02 | 青岛海信日立空调系统有限公司 | Communication circuit and air conditioner |
-
2017
- 2017-11-15 CN CN201721546161.6U patent/CN207527789U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111854071A (en) * | 2020-06-09 | 2020-10-30 | 海信（山东）空调有限公司 | Switch input circuit and air conditioner |
| CN112303805A (en) * | 2020-10-19 | 2021-02-02 | 青岛海信日立空调系统有限公司 | Communication circuit and air conditioner |
| CN112303806A (en) * | 2020-10-19 | 2021-02-02 | 青岛海信日立空调系统有限公司 | Communication 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 |
| CN112303805B (en) * | 2020-10-19 | 2023-11-28 | 青岛海信日立空调系统有限公司 | Communication circuit and air conditioner |
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