CN104251530B - A kind of air-conditioning communication bus distribution protection device and method - Google Patents
A kind of air-conditioning communication bus distribution protection device and method Download PDFInfo
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Abstract
The invention discloses a kind of air-conditioning communication bus distribution protection device, including power module, communication receiving/transmission return circuit module, connection overvoltage detection module, order circuit controlling switch module and central controller module.Power module is powered by central controller module for modules；Communication receiving/transmission return circuit module is connected by the first connection and the second connection with indoor set；Connection overvoltage detection module is connected with connection, and whether have over-pressed signal, send over-pressed indication signal to central controller module when there is over-pressed signal if detecting on connection；Central controller module receives over-pressed indication signal, and sends out code to order circuit controlling switch module；Order circuit controlling switch module disconnects the connection of communication receiving/transmission return circuit module and connection according to the out code.Present invention also offers a kind of air-conditioning communication bus distribution guard method, protection is realized by the break-make in communication control loop automatically in air-conditioner set wrong wire distribution.
Description
Technical field
The present invention relates to air-conditioning technical field, and in particular to air-conditioning communication bus distribution protects field, more particularly to a kind of
Air-conditioning communication bus distribution protection device and method.
Background technology
Because air-conditioning installs complexity, wrong wire distribution is can hardly be avoided, and an outdoor machine of air-conditioner can allow to connect more air-conditionings
Indoor set.The connection of air-conditioner set connects (as shown in Figure 1) according to hand-in-hand mode, and power line internal-external machine shares an electricity
Source, if there is connection and power line short circuit or the wrong of a unit, it may result in whole unit order circuit and electricity
Source line short circuit, computer board cause all interior machine computer boards all to damage, mass loss because access forceful electric power causes to burn
Greatly.
In order to solve the above problems, current way is that power outlet and socket communication are divided into two, is being communicated in addition
Inline fuse is protected on loop.But power outlet separates with socket communication, the probability of mis-wired, nothing are only reduction of
Method fundamentally solves this problem；The inline fuse on order circuit, misconnection enter forceful electric power and still result in computer board damage,
Need also exist for changing computer board.
The content of the invention
It is an object of the invention to propose a kind of air-conditioning communication bus distribution protection device, when air-conditioner set wrong wire distribution,
Protection is realized by the break-make in communication control loop automatically.
In a first aspect, the invention provides a kind of air-conditioning communication bus distribution protection device, the device include power module,
Communication receiving/transmission return circuit module, connection overvoltage detection module, order circuit controlling switch module and central controller module；
Wherein, power module is powered by central controller module for modules；
Communication receiving/transmission return circuit module is connected by the first connection and the second connection with indoor set, for carrying out outdoor unit
With the communication of indoor set；
Connection overvoltage detection module is connected with the connection, whether has over-pressed letter on the connection for detecting
Number, over-pressed indication signal is sent to the central controller module when there is over-pressed signal；
Central controller module receives the over-pressed indication signal, and sends closing to order circuit controlling switch module and refer to
Order；
Order circuit controlling switch module is connected with the communication receiving/transmission return circuit module, the connection, according to the pass
Instruction is closed, disconnects the connection of the communication receiving/transmission return circuit module and the connection.
Further, the order circuit controlling switch module includes the first relay module and the second relay module,
The relay module includes relay drive circuit and relay switch, and wherein relay drive circuit controls with the center
Device module is connected, and electric current is provided for relay switch；Relay switch is connected with the connection, is received for disconnecting the communication
Send out the connection of return circuit module and the connection.
Further, the relay drive circuit includes first resistor, second resistance and triode, wherein, the first electricity
Resistance input is connected with the central controller module, and first resistor output end connects with second resistance input and transistor base
Connect, transistor emitter and second resistance output head grounding, transistor collector are connected with the relay switch.
Further, the relay switch is electromagnetic relay switch, including diode, electromagnet and electromagnet are opened
Close, the positive pole of diode and one end of electromagnet be connected with the relay drive circuit, the negative pole of diode and electromagnet
The other end is connected with voltage source, and electromagnet switch is connected with the connection.
Further, the connection overvoltage detection module includes the 5th resistance, photoelectrical coupler, the 6th resistance, the 7th
One input of resistance, the 8th resistance and triode, wherein photoelectrical coupler is connected with the 5th resistance output end, and the 5th resistance is defeated
Another input for entering end and photoelectrical coupler is connected to the voltage signal received on communication receiving/transmission return circuit module on connection, light
The output end connection voltage of electric coupler, another output end connect the 6th resistance input；The base stage of triode and the 6th electricity
Resistance output end is connected with the 7th resistance input, and emitter stage and the 7th resistance output head grounding, colelctor electrode and the 8th resistance are defeated
Go out end with central controller controls module to be connected；8th resistance input connects voltage.
Further, the air-conditioning communication bus distribution protection device also includes malfunction coefficient module, is controlled with the center
Device module connection processed, receives the communication failure signal that the central controller module is sent and shows failure.
Further, the malfunction coefficient module can in the following manner at least one of show failure：Sound,
Word, flashing light.
Second aspect, present invention also offers a kind of air-conditioning communication bus distribution guard method, this method includes：
After air-conditioner set is powered, detects and whether there is over-pressed signal on connection；
When over-pressed signal is not present on connection, order circuit controlling switch closure；
When air-conditioning normal communication controls, continue to whether there is over-pressed signal on detection connection；
When over-pressed signal on connection be present, order circuit controlling switch disconnects.
Further, described when over-pressed signal on connection be present, order circuit controlling switch, which disconnects, also further wraps
Include：Connection malfunction coefficient.
Further, the mode of the malfunction coefficient includes at least one in the following manner：Sound, word, flashing light.
The present invention detects whether have over-pressed signal on connection in real time by using connection overvoltage detection module, once go out
Existing over-pressed signal, cuts off order circuit immediately, while carrying out malfunction coefficient, solves air-conditioner set and electricity during wrong wire distribution occurs
Brain plate because access forceful electric power cause to burn the problem of, and then the effect of automatic protection computer board.
Brief description of the drawings
Fig. 1 is Organization Chart in air-conditioner set cabling of the prior art.
Fig. 2 is the structure chart of the air-conditioning communication bus distribution protection device in first embodiment of the invention.
Fig. 3 is the communication receiving/transmission loop circuit figure in the embodiment of the present invention.
Fig. 4 is the connection overvoltage measure loop circuit diagram in the embodiment of the present invention.
Fig. 5 is the order circuit controlling switch circuit diagram in the embodiment of the present invention.
Fig. 6 is the structure chart of the air-conditioning communication bus distribution protection device in second embodiment of the invention.
Fig. 7 is the flow chart of the air-conditioning communication bus distribution guard method in third embodiment of the invention.
Fig. 8 is the flow chart of the air-conditioning communication bus distribution guard method in fourth embodiment of the invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Figure 2 illustrates the air-conditioning communication bus distribution protection device in first embodiment of the invention, the device includes
Power module 201, communication receiving/transmission return circuit module 202, connection overvoltage detection module 203, order circuit controlling switch module 204
With central controller module 205.
Wherein, power module 201 is powered by central controller module 205 for modules.
Communication receiving/transmission return circuit module 202, communication receiving/transmission return circuit module pass through the first connection and the second connection and interior
Machine connects, for carrying out the communication of outdoor unit and indoor set.
As shown in figure 3, communication receiving/transmission loop and over-pressed measure loop, order circuit controlling switch circuit and central controller
It is connected, the data-in port (Din.A, Din.B) in communication receiving/transmission loop receives the signal of central controller, data output end
With being grounded (GND) after a capacitance connection, over-pressed measure loop receives on FPDP (DAT.A, DAT.B) mouth (data-out)
Whether signal has over-pressed signal to detect on connection, when there is over-pressed signal, order circuit controlling switch circuit disconnects, and makes to lead to
The connection of news transmitting-receiving return circuit module and indoor set disconnects, and strong voltage is entered less than on computer board.
The connection overvoltage detection module of connection overvoltage detection module 203 connects with first connection and the second connection
Connect, whether have over-pressed signal on connection for detecting, send over-pressed indication signal to the center when there is over-pressed signal
Controller module 205.
Wherein, as shown in figure 4, connection overvoltage measure loop includes the 5th resistance R5, photoelectrical coupler IC1, the 6th electricity
Hinder R6, the 7th resistance R7, the 8th resistance R8 and triode N4, wherein a photoelectrical coupler IC1 input and the 5th resistance R5
Output end connects, and the 5th resistance input R5 and photoelectrical coupler IC1 another input is connected to communication receiving/transmission return circuit module
Voltage signal on upper reception connection, a photoelectrical coupler IC1 output end connection+5V voltages, another output end connection the
Six resistance R6 inputs；Triode N4 base stage B is connected with the 6th resistance R6 output ends and the 7th resistance R7 inputs, transmitting
Pole E and the 7th resistance R7 output head groundings, colelctor electrode C are connected with the 8th resistance R8 output ends and central controller (MCU) module
Connect；8th resistance R8 input connection+5V voltages.
Central controller module 205 receives the over-pressed indication signal, and is sent to order circuit controlling switch module 204
Out code.
Order circuit controlling switch module 204 disconnects the communication receiving/transmission return circuit module and institute according to the out code
State the connection of connection.
Wherein, order circuit controlling switch module 204 includes the first relay drive circuit 2041, the first relay switch
2042nd, the second relay drive circuit 2043 and the second relay switch 2044, wherein the first relay drive circuit 2041,
Two relay drive circuits 2043 are connected with the central controller module 203, be the first relay switch 2042 and second after
Electric switch 2044 provides electric current；First relay switch 2042 and the second relay switch 2044 and first connection,
Second connection connects, for disconnecting the connection of the communication receiving/transmission return circuit module 205 and the connection.As shown in figure 5, the
One relay drive circuit includes first resistor R1, triode N1 and second resistance R2, wherein, first resistor R1 inputs and institute
Central controller module connection is stated, first resistor R1 output ends are connected with second resistance R2 inputs and triode N1 base stage B,
Triode N1 emitter Es and second resistance R2 output head groundings, triode N1 colelctor electrodes C connect with first relay switch
Connect.First relay switch is electromagnetic relay switch, including diode D1, electromagnet RL2 and electromagnet switch P, diode
D1 positive pole and electromagnet RL2 one end are connected with first relay drive circuit 2041, diode D1 negative pole and electricity
The magnet RL2 other end is connected with+12V voltage sources, and electromagnet switch P is connected with the connection.Second relay driving
Circuit includes 3rd resistor R3, triode N2 and the 4th resistance R4, wherein, 3rd resistor R3 inputs and the central controller
Module is connected, and 3rd resistor R3 output ends are connected with the base stage B of the 4th resistance R4 inputs and triode N2, triode N2 transmittings
Pole E and the 4th resistance R4 output head groundings, triode N2 colelctor electrodes C are connected with the relay switch 2044.Second relay
Switch is electromagnetic relay switch, including diode D2, electromagnet RL2 and electromagnet switch Q, diode D2 positive pole and electromagnetism
Body RL2 one end is connected with second relay drive circuit, diode D2 negative pole and the electromagnet RL2 other end with+
12V voltage sources connect, and electromagnet switch Q is connected with the connection.
First embodiment provided by the invention by using connection overvoltage detection module detect in real time on connection whether
There is over-pressed signal, once there is over-pressed signal, cut off order circuit immediately.First embodiment of the invention can be missed in air-conditioner set
During distribution, protection can be realized automatically by the break-make in communication control loop.
Figure 6 illustrates the air-conditioning communication bus distribution protection device in first embodiment of the invention, the device includes
Power module 601, communication receiving/transmission return circuit module 602, connection overvoltage detection module 604, order circuit controlling switch module
604th, central controller module 605 and malfunction coefficient module 606.
Wherein, power module 601 is powered by central controller module 605 for modules.
Communication receiving/transmission return circuit module 602, communication receiving/transmission return circuit module pass through the first connection and the second connection and interior
Machine connects, for carrying out the communication of outdoor unit and indoor set.
As shown in figure 3, communication receiving/transmission loop and over-pressed measure loop, order circuit controlling switch circuit and central controller
It is connected, the data-in port (Din.A, Din.B) in communication receiving/transmission loop receives the signal of central controller, data output end
With being grounded (GND) after a capacitance connection, over-pressed measure loop receives on FPDP (DAT.A, DAT.B) mouth (data-out)
Whether signal has over-pressed signal to detect on connection, when there is over-pressed signal, order circuit controlling switch circuit disconnects, and makes to lead to
The connection of news transmitting-receiving return circuit module and indoor set disconnects, and strong voltage is entered less than on computer board.
Connection overvoltage detection module 603 is connected with first connection and the second connection, for detecting connection
On whether have over-pressed signal, over-pressed indication signal is sent to the central controller module 605 when there is over-pressed signal.
Wherein, as shown in figure 4, connection overvoltage measure loop includes the 5th resistance R5, photoelectrical coupler IC1, the 6th electricity
Hinder R6, the 7th resistance R7, the 8th resistance R8 and triode N4, wherein a photoelectrical coupler IC1 input and the 5th resistance R5
Output end connects, and the 5th resistance input R5 and photoelectrical coupler IC1 another input is connected to communication receiving/transmission return circuit module
Voltage signal on upper reception connection, a photoelectrical coupler IC1 output end connection+5V voltages, another output end connection the
Six resistance R6 inputs；Triode N4 base stage B is connected with the 6th resistance R6 output ends and the 7th resistance R7 inputs, transmitting
Pole E and the 7th resistance R7 output head groundings, colelctor electrode C are connected with the 8th resistance R8 output ends and central controller (MCU) module
Connect；8th resistance R8 input connection+5V voltages.
Central controller module 605 receives the over-pressed indication signal, and is sent to order circuit controlling switch module 604
Out code.
Order circuit controlling switch module 604 disconnects the communication receiving/transmission return circuit module and institute according to the out code
State the connection of connection.
Wherein, order circuit controlling switch module 604 includes the first relay drive circuit 6041, the first relay switch
6042nd, the second relay drive circuit 6043 and the second relay switch 6043, wherein the first relay drive circuit 6041,
Two relay drive circuits 6043 are connected with the central controller module 603, be the first relay switch 6042 and second after
Electric switch 6044 provides electric current；First relay switch 6042, the second relay switch 6044 and the communication receiving/transmission loop
Module 605 connects, for disconnecting the connection of the communication receiving/transmission return circuit module 605 and the central controller module 603.Such as figure
Shown in 4, the first relay drive circuit includes first resistor R1, triode N1 and second resistance R2, wherein, first resistor R1 is defeated
Enter end to be connected with the central controller module, first resistor R1 output ends and second resistance R2 inputs and triode N1 base
Pole B connections, triode N1 emitter Es and second resistance R2 output head groundings, triode N1 colelctor electrodes C and first relay
Switch connection.First relay switch is electromagnetic relay switch, including diode D1, electromagnet RL2 and electromagnet switch P,
Diode D1 positive pole and electromagnet RL2 one end are connected with first relay drive circuit 2041, and diode D1's is negative
Pole and electromagnet the RL2 other end are connected with+12V voltage sources, and electromagnet switch P is connected with the connection.Second relay
Device drive circuit includes 3rd resistor R3, triode N2 and the 4th resistance R4, wherein, 3rd resistor R3 inputs and the center
Controller module is connected, and 3rd resistor R3 output ends are connected with the base stage B of the 4th resistance R4 inputs and triode N2, triode
N2 emitter Es and the 4th resistance R4 output head groundings, triode N2 colelctor electrodes C are connected with the relay switch 2044.Second
Relay switch is electromagnetic relay switch, including diode D2, electromagnet RL2 and electromagnet switch Q, diode D2 positive pole
It is connected with electromagnet RL2 one end with second relay drive circuit, diode D2 negative pole and electromagnet RL2's is another
End is connected with+12V voltage sources, and electromagnet switch Q is connected with the connection.
Malfunction coefficient module 606, it is connected with the central controller module 603, receives the central controller module 603
The communication failure signal of transmission simultaneously shows failure.Malfunction coefficient module 606 show failure mode have many kinds, can choose with
One or more under type：Sound, word, flashing light.For example, it may be sound or sound and word, may be used also
To be word and flashing light.
Second embodiment provided by the invention by using connection overvoltage detection module detect in real time on connection whether
There is over-pressed signal, once there is over-pressed signal, cut off order circuit immediately, and carry out malfunction coefficient.The present invention second is implemented
Example can automatically realize protection in air-conditioner set wrong wire distribution by the break-make in communication control loop.With first embodiment
Compare, the embodiment carries out malfunction coefficient, can inform related personnel's timely processing.
The air-conditioning communication bus distribution guard method in third embodiment of the invention, this method include in the figure 7：
After step 701, air-conditioner set are powered, order circuit controlling switch acquiescence disconnects.
Whether over-pressed signal is detected in step 702, connection.
Whether by connection overvoltage measure loop (as shown in Figure 4), detecting on connection has over-pressed signal.Connection mistake
Pressure measure loop includes the 5th resistance R5, photoelectrical coupler IC1, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8 and three poles
Pipe N4, wherein photoelectrical coupler IC1 an input are connected with the 5th resistance R5 output ends, the 5th resistance input R5 and photoelectricity
Coupler IC1 another input is connected to the voltage signal received on communication receiving/transmission return circuit module on connection, photoelectric coupling
A device IC1 output end connection+5V voltages, another output end connect the 6th resistance R6 inputs；Triode N4 base stage B and
Six resistance R6 output ends are connected with the 7th resistance R7 inputs, emitter E and the 7th resistance R7 output head groundings, colelctor electrode C
It is connected with the 8th resistance R8 output ends and central controller (MCU) module；8th resistance R8 input connection+5V voltages.
Step 703, when over-pressed signal is not present on connection, order circuit controlling switch closure.
Step 704, when air-conditioning normal communication controls, continue detect connection on whether there is over-pressed signal.
During air-conditioning normal communication, detect in real time on connection and whether there is over-pressed signal.
Step 705, when over-pressed signal on connection be present, order circuit controlling switch remains open.
When there is over-pressed signal, order circuit controlling switch disconnects, and the connection of communication receiving/transmission loop and connection is broken
Open.
Whether 3rd embodiment provided by the invention has over-pressed signal by detecting in real time on connection, once there is overvoltage
Signal, order circuit is cut off immediately.Third embodiment of the invention can pass through communication control in air-conditioner set wrong wire distribution
The break-make in loop realizes protection automatically.
The air-conditioning communication bus distribution guard method in third embodiment of the invention, this method include in fig. 8：
After step 801, air-conditioner set are powered, order circuit controlling switch acquiescence disconnects.
Whether over-pressed signal is detected in step 802, connection.
Whether by connection overvoltage measure loop (as shown in Figure 4), detecting on connection has over-pressed signal.Connection mistake
Pressure measure loop includes the 5th resistance R5, photoelectrical coupler IC1, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8 and three poles
Pipe N4, wherein photoelectrical coupler IC1 an input are connected with the 5th resistance R5 output ends, the 5th resistance input R5 and photoelectricity
Coupler IC1 another input is connected to the voltage signal received on communication receiving/transmission return circuit module on connection, photoelectric coupling
A device IC1 output end connection+5V voltages, another output end connect the 6th resistance R6 inputs；Triode N4 base stage B and
Six resistance R6 output ends are connected with the 7th resistance R7 inputs, emitter E and the 7th resistance R7 output head groundings, colelctor electrode C
It is connected with the 8th resistance R8 output ends and central controller (MCU) module；8th resistance R8 input connection+5V voltages.
Step 803, when over-pressed signal is not present on connection, order circuit controlling switch closure.
Step 804, when air-conditioning normal communication controls, continue detect connection on whether there is over-pressed signal.
During air-conditioning normal communication, detect in real time on connection and whether there is over-pressed signal.
Step 805, when over-pressed signal on connection be present, order circuit controlling switch disconnect.
When there is over-pressed signal, order circuit controlling switch disconnects, and the connection of communication receiving/transmission loop and connection is broken
Open.
Step 806, when over-pressed signal be present on detection connection, when order circuit controlling switch disconnects, carry out connection
Malfunction coefficient.The mode of malfunction coefficient has many kinds, can choose one or more in the following manner：Sound, word, sudden strain of a muscle
Lamp.For example, it may be sound or sound and word, can also be word and flashing light.
Whether fourth embodiment provided by the invention has over-pressed signal by detecting in real time on connection, once there is overvoltage
Signal, order circuit is cut off immediately.Fourth embodiment of the invention can pass through communication control in air-conditioner set wrong wire distribution
The break-make in loop realizes protection automatically.Compared with 3rd embodiment, the embodiment carries out malfunction coefficient, can inform related personnel
Timely processing.
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (9)
1. a kind of air-conditioning communication bus distribution protection device, it is characterised in that the device includes power module, communication receiving/transmission loop
Module, connection overvoltage detection module, order circuit controlling switch module and central controller module；
Wherein, power module is powered by central controller module for modules；
Communication receiving/transmission return circuit module is connected by the first connection and the second connection with indoor set, for carrying out outdoor unit and room
The communication of interior machine；
Connection overvoltage detection module is connected with the connection, whether has over-pressed signal on the connection for detecting,
Have and send over-pressed indication signal to the central controller module during over-pressed signal；
Central controller module receives the over-pressed indication signal, and sends out code to order circuit controlling switch module；
Order circuit controlling switch module, including the first relay module and the second relay module, the relay module bag
Relay drive circuit and relay switch are included, wherein the relay drive circuit is connected with the central controller module,
Electric current is provided for the relay switch；The relay switch is connected with the connection, for disconnecting the communication receiving/transmission
The connection of return circuit module and the connection, the order circuit controlling switch module and the communication receiving/transmission return circuit module, institute
Connection connection is stated, according to the out code, disconnects the connection of the communication receiving/transmission return circuit module and the connection.
2. air-conditioning communication bus distribution protection device according to claim 1, it is characterised in that the relay driving electricity
Road includes first resistor, second resistance and triode, wherein, first resistor input is connected with the central controller module,
First resistor output end is connected with second resistance input and transistor base, and transistor emitter terminates with second resistance output
Ground, transistor collector are connected with the relay switch.
3. air-conditioning communication bus distribution protection device according to claim 1, it is characterised in that the relay switch is
Electromagnetic relay switch, including diode, electromagnet and electromagnet switch, the positive pole of diode and one end of electromagnet with it is described
Relay drive circuit connects, and the negative pole of diode and the other end of electromagnet be connected with voltage source, electromagnet switch with it is described
Connection is connected.
4. air-conditioning communication bus distribution protection device according to claim 1, it is characterised in that the connection overvoltage inspection
Surveying module includes the 5th resistance, photoelectrical coupler, the 6th resistance, the 7th resistance, the 8th resistance and triode, wherein photoelectric coupling
One input of device is connected with the 5th resistance output end, and another input of the 5th resistance input and photoelectrical coupler is connected to
The voltage signal on connection is received on communication receiving/transmission return circuit module, the output end connection voltage of photoelectrical coupler is another defeated
Go out the 6th resistance input of end connection；The base stage of triode is connected with the 6th resistance output end and the 7th resistance input, hair
Emitter-base bandgap grading and the 7th resistance output head grounding, colelctor electrode are connected with the 8th resistance output end and central controller controls module；The
Eight resistance inputs connect voltage.
5. air-conditioning communication bus distribution protection device according to claim 1, it is characterised in that described device also includes event
Hinder display module, be connected with the central controller module, receive the communication failure signal that the central controller module is sent
And show failure.
6. air-conditioning communication bus distribution protection device according to claim 5, it is characterised in that the malfunction coefficient module
In in the following manner at least one of show failure：Sound, word, flashing light.
7. a kind of air-conditioning communication bus distribution guard method, total applied to air-conditioning according to any one of claims 1 to 6 communication
Line distribution protection device, it is characterised in that this method includes：
After air-conditioner set is powered, detects and whether there is over-pressed signal on connection；
When over-pressed signal is not present on connection, order circuit controlling switch closure；
When air-conditioning normal communication controls, continue to whether there is over-pressed signal on detection connection；
When over-pressed signal on connection be present, order circuit controlling switch disconnects.
8. air-conditioning communication bus distribution guard method according to claim 7, it is characterised in that described to be deposited when on connection
In over-pressed signal, order circuit controlling switch, which disconnects, to be still further comprised：Connection malfunction coefficient.
9. air-conditioning communication bus distribution guard method according to claim 8, it is characterised in that the side of the malfunction coefficient
Formula includes at least one in the following manner：Sound, word, flashing light.
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| CN107143964B (en) * | 2016-03-01 | 2021-01-12 | 珠海格力电器股份有限公司 | Starting circuit for starting air conditioner and air conditioner |
| CN110410936B (en) * | 2019-07-23 | 2021-07-30 | 宁波奥克斯电气股份有限公司 | Multi-split system fault detection method and device and multi-split system |
| CN112283875B (en) * | 2020-10-26 | 2022-04-22 | Tcl空调器(中山)有限公司 | Air conditioner, communication circuit of air conditioner internal and external machines and fault detection method of communication circuit |
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| CN87200492U (en) * | 1987-01-15 | 1988-05-11 | 张钧男 | Automatic man-apparatus preventer for domestic electric-appliance |
| CN1135032A (en) * | 1995-03-30 | 1996-11-06 | 三菱电机株式会社 | Control apparatus for multi-air-conditioner |
| CN1321054A (en) * | 2000-04-24 | 2001-11-07 | 三洋电机株式会社 | Communication system of air conditioner |
| CN1871786A (en) * | 2003-10-21 | 2006-11-29 | 松下电器产业株式会社 | Facilities equipment communication circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104251530A (en) | 2014-12-31 |
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