CN209432956U - A kind of air conditioner outdoor unit control panel detecting tool - Google Patents
A kind of air conditioner outdoor unit control panel detecting tool Download PDFInfo
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- CN209432956U CN209432956U CN201821614578.6U CN201821614578U CN209432956U CN 209432956 U CN209432956 U CN 209432956U CN 201821614578 U CN201821614578 U CN 201821614578U CN 209432956 U CN209432956 U CN 209432956U
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Abstract
The utility model discloses a kind of air conditioner outdoor unit control panel detecting tools, including controller, display screen, the first current loop communication circuit, the second current loop communication circuit, relay；First current loop communication circuit and the second current loop communication circuit respectively include input terminal and output end；The output end of first current loop communication circuit connects zero curve, first current loop communication circuit input terminal connection relay it is normally closed/open stationary contact, the normal opening/closing stationary contact of the output end connection relay of second current loop communication circuit, the input terminal of second current loop communication circuit connects zero curve, the movable contact connection communication line of relay；Whether the coil of controller control relay powers on；Controller acquires the voltage signal of the first current loop communication circuit, the second current loop communication circuit respectively, controls display screen according to collected voltage signal and shows；After-sales staff knows whether outdoor unit control panel communicates normally by display screen, solves the problems, such as that the detection of outdoor unit control panel is inconvenient.
Description
Technical field
The utility model belongs to field of circuit technology, specifically, being to be related to a kind of air conditioner outdoor unit control panel detection work
Dress.
Background technique
Data are carried out according to the rule and agreement that have consulted between air conditioner indoor unit master control borad and outdoor unit master control borad
Exchange, realize communication.
When being detected using existing detecting tool after sale to air-conditioner outdoor unit master control borad, it usually needs carry out complicated
Wiring and setting, complicated for operation, detection is inconvenient, more demanding to after-sales staff.
Summary of the invention
The utility model provides a kind of air conditioner outdoor unit control panel detecting tool, solves the detection of outdoor unit control panel not
Just the problem of.
In order to solve the above technical problems, the utility model is achieved using following technical scheme:
A kind of air conditioner outdoor unit control panel detecting tool, the air conditioner outdoor unit control panel include outdoor controller, room
Outer machine current loop communication circuit, the outdoor unit current loop communication circuit include two input/output terminals: the first input/output terminal,
Second input/output terminal, the first input/output terminal connection communication line, second input/output terminal connect zero curve；The inspection
Surveying tooling includes controller, display screen, the first current loop communication circuit, the second current loop communication circuit, relay；Described first
Current loop communication circuit and the second current loop communication circuit respectively include input terminal and output end；The first current ring communication electricity
The output end on road connects the zero curve, the input terminal of first current loop communication circuit connect the relay it is normally closed/open
Stationary contact, the output end of second current loop communication circuit connect the normal opening/closing stationary contact of the relay, second electricity
The input terminal for flowing ring telecommunication circuit connects the zero curve, and the movable contact of the relay connects the communication line；The controller
Whether the coil of control relay powers on；The controller acquires the first current loop communication circuit, the second current ring communication respectively
The voltage signal of circuit, and display screen is controlled according to collected voltage signal and is shown.
Further, first current loop communication circuit includes the first optocoupler, the second optocoupler, the first triode；It is described
Controller connects the control terminal of the first triode, one end ground connection of the switch ways of first triode, the one or three pole
The other end of the switch ways of pipe connects the output end of the luminous end of the first optocoupler, the input terminal of the luminous end of first optocoupler
Connect DC power supply；The input terminal of the light-receiving end of first optocoupler connects the input terminal of the first current loop communication circuit, described
The output end of the light-receiving end of first optocoupler connects the input terminal of the luminous end of the second optocoupler, the luminous end of second optocoupler it is defeated
Outlet connects the output end of the first current loop communication circuit；The input terminal of the light-receiving end of second optocoupler connects controller, and
DC power supply is connected by the first pull-up resistor；The output end of the light-receiving end of second optocoupler is grounded.
Further, second current loop communication circuit includes third optocoupler, the 4th optocoupler, the second triode；Institute
The control terminal that controller connects the second triode is stated, one end of the switch ways of second triode is grounded, and the described 2nd 3
The output end of the luminous end of the other end connection third optocoupler of the switch ways of pole pipe, the input of the luminous end of the third optocoupler
End connection DC power supply；The input terminal of the light-receiving end of the third optocoupler connects the anode of the first charging capacitor, and described first fills
The cathode of capacitor connects the input terminal of the second current loop communication circuit, the anode connection firewire of first charging capacitor；Institute
The input terminal of the luminous end of output end the 4th optocoupler of connection of the light-receiving end of third optocoupler is stated, the luminous end of the 4th optocoupler
Output end connects the output end of the second current loop communication circuit；The input terminal of the light-receiving end of 4th optocoupler connects direct current
The output end in source, the light-receiving end of the 4th optocoupler is grounded by the first pull down resistor, and connects controller.
Further, the anode of the cathode connection zener diode of first charging capacitor, the first charging electricity
The cathode of the anode connection zener diode of appearance.
Further, the first divider resistance is connected between the anode and cathode of first charging capacitor.
Further, the outdoor unit current loop communication circuit includes the 5th optocoupler, the 6th optocoupler, third transistor；Institute
The control terminal of outdoor controller connection third transistor is stated, one end ground connection of the switch ways of the third transistor is described
The other end of the switch ways of third transistor connects the output end of the luminous end of the 5th optocoupler, the luminous end of the 5th optocoupler
Input terminal connect DC power supply；The input terminal of the light-receiving end of 5th optocoupler connects the anode of the second charging capacitor, described
The cathode of second charging capacitor connects the second input/output terminal, the anode connection firewire of second charging capacitor；Described 5th
The output end of the light-receiving end of optocoupler connects the input terminal of the luminous end of the 6th optocoupler, the output end of the luminous end of the 6th optocoupler
Connect the first input/output terminal；The input terminal of the light-receiving end of 6th optocoupler connects outdoor controller, and passes through on second
Pull-up resistor connects DC power supply；The output end of the light-receiving end of 6th optocoupler is grounded.
Further, the outdoor unit current loop communication circuit includes the 7th optocoupler, the 8th optocoupler, the 4th triode；
The outdoor controller connects the control terminal of the 4th triode, one end ground connection of the switch ways of the 4th triode, institute
The output end of the luminous end of the other end the 8th optocoupler of connection of the switch ways of the 4th triode is stated, the 8th optocoupler shines
The input terminal at end connects DC power supply；The input terminal of the light-receiving end of 8th optocoupler connects the first input/output terminal, and described the
The output end of the light-receiving end of eight optocouplers connects the input terminal of the luminous end of the 7th optocoupler, the output of the luminous end of the 7th optocoupler
The second input/output terminal of end connection；The input terminal of the light-receiving end of 7th optocoupler connects DC power supply, the 7th optocoupler
The output end of light-receiving end is grounded by the second pull down resistor, and connects outdoor controller.
Further, the anode of the cathode connection clamp diode of second charging capacitor, the second charging electricity
The cathode of the anode connection clamp diode of appearance.
Further, the second divider resistance is connected between the anode and cathode of second charging capacitor.
Compared with prior art, the advantages and positive effects of the utility model are as follows: the air-conditioner outdoor unit control of the utility model
Making sheet detecting tool, controller control relay coil do not power on, the first current loop communication circuit and outdoor unit current ring communication
Circuit carries out communication test, and controller knows air-conditioner outdoor unit by the voltage signal of collected first current loop communication circuit
Whether control panel communicates normally with the first current loop communication circuit, and is sent to display screen and shows；Controller controls relay line
Circle powers on, and is switched to the second current loop communication circuit and outdoor unit current loop communication circuit carries out communication test, controller passes through
The voltage signal of collected second current loop communication circuit knows air conditioner outdoor unit control panel and the second current loop communication circuit
Whether communicate normally, and is sent to display screen and shows；After-sales staff is by display screen you can learn that whether outdoor unit control panel leads to
Letter is normal, in order to after-sales staff on-call maintenance or replacement, solves the problems, such as that the detection of outdoor unit control panel is inconvenient；Moreover, selling
Personnel only need will test tooling afterwards and outdoor unit control panel connects firewire, zero curve, communication line, are arranged without complicated,
It is easily operated, reduce detection difficulty after sale and cost.
After the detailed description of the utility model embodiment is read in conjunction with the figure, other features and advantages of the utility model
It will become clearer.
Detailed description of the invention
Fig. 1 is a kind of circuit theory of the embodiment for the air conditioner outdoor unit control panel detecting tool that the utility model is proposed
Figure；
Fig. 2 is that the circuit of another embodiment for the air conditioner outdoor unit control panel detecting tool that the utility model is proposed is former
Reason figure；
Fig. 3 is that the circuit of the another embodiment for the air conditioner outdoor unit control panel detecting tool that the utility model is proposed is former
Reason figure；
Fig. 4 is that the circuit of another embodiment of the air conditioner outdoor unit control panel detecting tool that the utility model is proposed is former
Reason figure.
Specific embodiment
Specific embodiment of the present utility model is described in more detail with reference to the accompanying drawing.
The air conditioner outdoor unit control panel detecting tool of the present embodiment, air conditioner outdoor unit control panel mainly include outdoor unit control
Device, outdoor unit current loop communication circuit, outdoor unit current loop communication circuit include two input/output terminals: the first input/output terminal
IO3, the second input/output terminal IO4；First input/output terminal IO3 connection communication line C, the second input/output terminal IO4 connection zero curve
N；The on-off of the outer machine current loop communication circuit of outdoor controller control room.
Detecting tool mainly include controller, display screen, the first current loop communication circuit, the second current loop communication circuit,
Relay K3；First current loop communication circuit and the second current loop communication circuit respectively include input terminal and output end；First electricity
Flow the output end OUT3 connection zero curve N of ring telecommunication circuit, the input terminal IN3 connection relay of the first current loop communication circuit
Device K3 it is normally closed/open stationary contact, the normal opening/closing stationary contact of the output end OUT4 connection relay K3 of the second current loop communication circuit
The movable contact of point, input terminal IN14 connection the zero curve N, relay K3 of the second current loop communication circuit connects the communication line
C；Whether the coil of controller control relay K3 powers on；Controller controls the first current loop communication circuit, the second electric current respectively
The on-off of ring telecommunication circuit；Controller acquires the voltage letter of the first current loop communication circuit, the second current loop communication circuit respectively
Number, and display screen is controlled according to collected voltage signal and is shown, it is shown in Figure 1.
In the present embodiment, the normally closed stationary contact of the input terminal IN3 connection relay K3 of the first current loop communication circuit, the
The normally opened stationary contact of the output end OUT4 connection relay K3 of two current loop communication circuits.
The course of work are as follows:
The outer machine current loop communication circuit conducting of outdoor controller control room, controller control the first current ring communication electricity
Road, the conducting of the second current loop communication circuit, the coil of relay K3 do not power on, and the normally closed stationary contact and movable contact of relay K3 connects
It connects, at this point, the normally closed stationary contact of output end OUT3 connection zero curve N, input terminal IN3 through relay K3 of the first current loop communication circuit
Point, movable contact connection communication line C；First input/output terminal IO3 connection communication line C of outdoor unit current loop communication circuit, second
Input/output terminal IO4 connection zero curve N；Therefore, the input terminal IN3 of the first current loop communication circuit through relay K3, communication line C with
First input/output terminal IO3 connection of outdoor unit current loop communication circuit；The output end OUT3 of first current loop communication circuit is logical
Zero curve N is crossed to connect with the second input/output terminal IO4 of outdoor unit current loop communication circuit.
If the first current loop communication circuit and outdoor unit current loop communication circuit form electric current loop, controller is collected
The voltage signal of first current loop communication circuit is to communicate normal level (such as low level)；Then controller controls display screen, mentions
Show that outdoor unit control panel communicates normally with the first current loop communication circuit.
If the first current loop communication circuit and outdoor unit current loop communication circuit can not form electric current loop, controller acquisition
The voltage signal of the first current loop communication circuit arrived is the level (such as high level) of communication abnormality；Then controller controls relay
K3 coil powers on, and the normally opened stationary contact of relay K3 is connect with movable contact, at this point, the output end of the second current loop communication circuit
The input terminal IN14 of normally opened stationary contact, movable contact connection communication line C of the OUT4 through relay K3, the second current loop communication circuit connect
Meet zero curve N；Therefore, the input terminal IN14 of the second current loop communication circuit through zero curve N and outdoor unit current loop communication circuit the
Two input/output terminal IO4 connections；The output end OUT4 of second current loop communication circuit is through relay K3, communication line C and outdoor unit
First input/output terminal IO3 connection of current loop communication circuit.
If the second current loop communication circuit and outdoor unit current loop communication circuit form electric current loop, controller is collected
The voltage signal of second current loop communication circuit is to communicate normal level (such as high level)；Then controller controls display screen, mentions
Show that outdoor unit control panel communicates normally with the second current loop communication circuit.
If the second current loop communication circuit and outdoor unit current loop communication circuit can not form electric current loop, controller acquisition
The voltage signal of the second current loop communication circuit arrived is the level (such as low level) of communication abnormality；Then controller control display
Screen prompts outdoor unit control panel communication abnormality.
The air conditioner outdoor unit control panel detecting tool of the present embodiment, controller control relay coil do not power on, the first electricity
It flows ring telecommunication circuit and outdoor unit current loop communication circuit carries out communication test, controller is logical by collected first electric current loop
The voltage signal of letter circuit knows whether air conditioner outdoor unit control panel communicates normally with the first current loop communication circuit, and is sent to
Display screen is shown；Controller control relay coil powers on, and is switched to the second current loop communication circuit and outdoor unit electric current loop is logical
Believe that circuit carries out communication test, controller is known outside air conditioning chamber by the voltage signal of collected second current loop communication circuit
Whether machine control panel communicates normally with the second current loop communication circuit, and is sent to display screen and shows；After-sales staff passes through display
Screen, in order to after-sales staff on-call maintenance or replacement, solves outdoor unit you can learn that whether outdoor unit control panel communicates normally
The inconvenient problem of control panel detection；Moreover, after-sales staff only needs will test tooling and outdoor unit control panel connects firewire, zero
Line, communication line, it is easily operated without complicated setting, reduce detection difficulty after sale and cost.
The air conditioner outdoor unit control panel detecting tool of the present embodiment selects the first electricity by control relay whether powering on
It flows ring telecommunication circuit or the second current loop communication circuit and outdoor unit current loop communication circuit carries out communication test, without manual
Setting, no setting is required, and toggle switch is selected, and then the shell of detecting tool is not necessarily to reserve position of opening for toggle switch, only
Wiring hole need to be reserved, highly-safe, appearance is good.
In the present embodiment, the first current loop communication circuit mainly includes the first optocoupler IC11, the second optocoupler IC12, first
Triode N11, it is shown in Figure 1.The control terminal of pin 4-35-TX the first triode of connection N11 of controller, the one or three pole
One end of the switch ways of N11 pipe is grounded, and the other end of the switch ways of the first triode N11 passes through resistance R28 connection first
The input terminal of the output end of the luminous end of optocoupler IC11, the luminous end of the first optocoupler IC11 connects DC power supply；First optocoupler
The input terminal of the light-receiving end of IC11 connects the input terminal IN3 of the first current loop communication circuit, the light-receiving end of the first optocoupler IC11
Output end connects the input terminal of the luminous end of the second optocoupler IC12, and the output end of the luminous end of the second optocoupler IC12 passes through resistance
The output end OUT3 of R16 the first current loop communication circuit of connection；The input terminal of the light-receiving end of second optocoupler IC12 passes through resistance R33
The pin 4-36-RX of controller is connected, the input terminal of the light-receiving end of the second optocoupler IC12 is straight by the first pull-up resistor R27 connection
Galvanic electricity source；The output end of the light-receiving end of second optocoupler IC12 is grounded.
The pin 4-35-TX of controller exports the control terminal of high level to the first triode N11, the first triode N11's
The luminous end of switch ways conducting, the first optocoupler IC11 shines.If the light-receiving end of the second optocoupler IC12 turns off, controller
Pin 4-36-RX receives high level signal, illustrates outdoor unit control panel communication abnormality.If the light-receiving end of the second optocoupler IC12
Conducting, then the pin 4-36-RX of controller receives low level signal, illustrates that outdoor unit control board communications are normal.That is, controller
Pin 4-36-RX be used to acquire the voltage signal of the first current loop communication circuit, and according to the low and high level control received
Display screen shows whether outdoor unit control panel is normal.The first electric current loop is constructed by the first optocoupler, the second optocoupler, the first triode
Telecommunication circuit, circuit structure is simple, be easy to implement, cost is relatively low, and easily controllable.
In the present embodiment, the second current loop communication circuit mainly includes third optocoupler IC13, the 4th optocoupler IC14, second
Triode N12, it is shown in Figure 1.The control terminal of pin 4-37-TX1 the second triode of connection N12 of controller, the two or three pole
One end of the switch ways of pipe N12 is grounded, the hair of the other end connection third optocoupler IC13 of the switch ways of the second triode N12
The input terminal of the output end at light end, the IC13 luminous end of third optocoupler passes through resistance R32 connection DC power supply；Third optocoupler IC13
The input terminal of light-receiving end connect the anode of the first charging capacitor E3, it is logical that the cathode of the first charging capacitor E3 connects the second electric current loop
Believe the anode connection firewire L of the input terminal IN14, the first charging capacitor E3 of circuit；The output end of the light-receiving end of third optocoupler IC13
The input terminal of the luminous end of the 4th optocoupler IC14 is connected, it is logical that the output end of the luminous end of the 4th optocoupler IC14 connects the second electric current loop
Believe the output end OUT4 of circuit；The input terminal of the light-receiving end of 4th optocoupler IC14 connects DC power supply, the 4th optocoupler IC14 by
The output end at light end is grounded by the first pull down resistor R29, and the output end of the light-receiving end of the 4th optocoupler IC14 is connected by resistance R31
Meet the pin 4-38-RX1 of controller.
The pin 4-37-TX1 of controller exports the control terminal of high level to the second triode N12, the second triode N12's
The luminous end of switch ways conducting, third optocoupler IC13 shines.If the light-receiving end of the 4th optocoupler IC14 turns off, controller
Pin 4-38-RX1 receives low level signal, illustrates outdoor unit control panel communication abnormality.If the light of the 4th optocoupler IC14
End conducting, then the pin 4-38-RX1 of controller receives high level signal, illustrates that outdoor unit control board communications are normal.That is, control
The pin 4-38-RX1 of device processed is used to acquire the voltage signal of the second current loop communication circuit, and according to the low and high level received
It controls display screen and shows whether outdoor unit control panel is normal.Pass through third optocoupler, the 4th optocoupler, the second electricity of the second triode building
Ring telecommunication circuit is flowed, circuit structure is simple, be easy to implement, cost is relatively low, and easily controllable.
The anode of the cathode connection zener diode ZD1 of first charging capacitor E3, the anode connection of the first charging capacitor E3
The cathode of zener diode ZD1.Zener diode ZD1 plays pressure stabilization function, guarantees the voltage of the first charging capacitor E3, avoids the
The voltage fluctuation of one charging capacitor E3.
The first divider resistance R13 is connected between the anode and cathode of the first charging capacitor E3.First divider resistance R13
With partial pressure effect, the voltage of the first charging capacitor E3 is avoided to fill too high.
There are two types of circuit structures for the outdoor unit current loop communication circuit of air conditioner outdoor unit control panel.
The circuit structure one of outdoor unit current loop communication circuit: outdoor unit current loop communication circuit mainly includes the 5th optocoupler
IC15, the 6th optocoupler IC16, third transistor N13, referring to shown in Fig. 1, Fig. 2.The pin 1_17_TX_ of outdoor controller
The control terminal of insider connection third transistor N13, one end ground connection of the switch ways of third transistor N13, third transistor
Output end of the other end of the switch ways of N13 by the luminous end of the 5th optocoupler IC15 of resistance R22 connection, the 5th optocoupler IC15
Luminous end input terminal connect DC power supply；The input terminal of the light-receiving end of 5th optocoupler IC15 connects the second charging capacitor E4's
Anode, the cathode of the second charging capacitor E4 connect the anode connection firewire of the second input/output terminal IO4, the second charging capacitor E4；
The output end of the light-receiving end of 5th optocoupler IC15 connects the input terminal of the luminous end of the 6th optocoupler IC16, the hair of the 6th optocoupler IC16
The output end at light end connects the first input/output terminal IO3 by resistance R24, R20；The input terminal of the light-receiving end of 6th optocoupler IC16
Pass through the pin 1_14_RX_insider of resistance R30 connection outdoor controller, the input terminal of the light-receiving end of the 6th optocoupler IC16
Pass through the second pull-up resistor R26 connection DC power supply；The output end of the light-receiving end of 6th optocoupler IC16 is grounded.
The pin 1_17_TX_insider of outdoor controller exports the control terminal of high level to third transistor N13, the
The switch ways of three triode N13 are connected, and the luminous end of the 5th optocoupler IC15 shines.If the light-receiving end of the 6th optocoupler IC16 closes
Disconnected, then the pin 1_14_RX_insider of outdoor controller receives high level signal.If the light of the 6th optocoupler IC16
End conducting, then the pin 1_14_RX_insider of outdoor controller receives low level signal.Pass through the 5th optocoupler, the 6th
Optocoupler, third transistor construct outdoor unit current loop communication circuit, and circuit structure is simple, be easy to implement, cost is relatively low, Er Qieyi
In control.
The circuit structure two of outdoor unit current loop communication circuit: outdoor unit current loop communication circuit mainly includes the 7th optocoupler
IC17, the 8th optocoupler IC18, the 4th triode N14 etc.；Referring to shown in Fig. 3, Fig. 4.The pin 2-26- of outdoor controller
The control terminal of the 4th triode N14 of COMM-TX connection, one end ground connection of the switch ways of the four or three pole N14 pipe, the 4th triode
The other end of the switch ways of N14 connects the output end of the luminous end of the 8th optocoupler IC18, the luminous end of the 8th optocoupler IC18
Input terminal passes through resistance R3 connection DC power supply；The input terminal of the light-receiving end of 8th optocoupler IC18 connects the first input/output terminal
IO3, the output end of the light-receiving end of the 8th optocoupler IC18 connect the input terminal of the luminous end of the 7th optocoupler IC17, the 7th optocoupler IC17
Luminous end output end connect the second input/output terminal IO4；The input terminal of the light-receiving end of 7th optocoupler IC17 connects direct current
The output end in source, the light-receiving end of the 7th optocoupler IC17 is grounded by the second pull down resistor R5, the light-receiving end of the 7th optocoupler IC17
Output end passes through the pin 2-27-COMM-RX of resistance R8 connection outdoor controller.
The pin 2-26-COMM-TX of outdoor controller exports the control terminal of high level to the 4th triode N14, and the 4th
The switch ways of triode N14 are connected, and the luminous end of the 8th optocoupler IC18 shines.If the light-receiving end of the 7th optocoupler IC17 closes
Disconnected, then the pin 2-27-COMM-RX of outdoor controller receives low level signal.If the light-receiving end of the 8th optocoupler IC18
Conducting, then the pin 2-27-COMM-RX of outdoor controller receives high level signal.By the 7th optocoupler, the 8th optocoupler,
4th triode constructs outdoor unit current loop communication circuit, and circuit structure is simple, be easy to implement, cost is relatively low, and is easy to control
System.
The anode of the cathode connection clamp diode D8 of second charging capacitor E4, the positive connection clamp of the second charging capacitor E4
The cathode of position diode D8.Clamp diode D8 plays a protective role, when relay K3 is powered on, is powered off switching, i.e., the first electricity
When flowing ring telecommunication circuit and the switching of the second current loop communication circuit, there is electric energy impact in circuit, the effect of clamp diode D8 is
Impact is absorbed, the second charging capacitor E4 is protected.
The second divider resistance R11 is connected between the anode and cathode of the second charging capacitor E4.Second divider resistance R11
With partial pressure effect, the voltage of the second charging capacitor E4 is avoided to fill too high.Certainly, R15, R14 also effect having the same.
In the following, the specific detection process of the detecting tool of the present embodiment is described in detail.
One, assume that outdoor unit current loop communication circuit uses circuit structure one, referring to shown in Fig. 1, Fig. 2:
(1) controller control relay K3 coil powers on, and selects the second current loop communication circuit, shown in Figure 2；Control
The pin 4-37-TX1 of device exports high level, and the luminous end of third optocoupler IC13 shines.The pin 1_17_ of outdoor controller
TX_insider exports high level, the switch ways conducting of third transistor N13, and the luminous end of the 5th optocoupler IC15 shines.
Second input of the input terminal IN4 of second current loop communication circuit through zero curve N and outdoor unit current loop communication circuit
Output end IO4 connection；The output end OUT4 of second current loop communication circuit is through relay K3, communication line C and outdoor unit electric current loop
First input/output terminal IO3 connection of telecommunication circuit, it is shown in Figure 2；Second current loop communication circuit and outdoor unit electric current loop
Telecommunication circuit can not form electric current loop.
The light-receiving end of 4th optocoupler IC14 turns off, and the pin 4-38-RX1 of controller receives low level signal, illustrates room
Outer machine control panel and the second current loop communication circuit communication abnormality, and shown by display screen, prompt after-sales staff.
The light-receiving end of 6th optocoupler IC16 turns off, and the pin 1_14_RX_insider of outdoor controller receives high electricity
Ordinary mail number illustrates outdoor unit control panel and the second current loop communication circuit communication abnormality.
(2) controller controls relay K3 coil blackout, selects the first current loop communication circuit, shown in Figure 1；Control
The pin 4-35-TX of device exports high level, the switch ways conducting of the first triode N11, the luminous end hair of the first optocoupler IC11
Light.The pin 1_17_TX_insider of outdoor controller exports high level, and the switch ways of third transistor N13 are connected, the
The luminous end of five optocoupler IC15 shines.
The input terminal IN3 of first current loop communication circuit is through relay K3, communication line C and outdoor unit current loop communication circuit
The first input/output terminal IO3 connection；The output end OUT3 of first current loop communication circuit is logical through zero curve N and outdoor unit electric current loop
Believe the second input/output terminal IO4 connection of circuit；First current loop communication circuit and outdoor unit current loop communication circuit form electricity
Flow ring.The current path of electric current loop are as follows: the anode of the second charging capacitor E4 → the 5th optocoupler IC15 light-receiving end → the 6th optocoupler
The input/output terminal of luminous end → R20, R24 → first IO3 → communication line C → relay K3 → input terminal IN3 → the first of IC16
The light-receiving end of optocoupler IC11 → second optocoupler IC12 luminous end → resistance R16 → output end OUT3 → zero curve N → second is inputted
The cathode of the charging capacitor of output end IO4 → second E4.Due to there is electric current in electric current loop, the luminous end of the second optocoupler IC12 shines,
The luminous end of 6th optocoupler IC16 shines.
Since the luminous end of the second optocoupler IC12 shines, the light-receiving end conducting of the second optocoupler IC12, the pin 4- of controller
36-RX receives low level signal, illustrates that outdoor unit control panel communicates normally with the first current loop communication circuit, and pass through display
Screen display, prompts after-sales staff.
Since the luminous end of the 6th optocoupler IC16 shines, the light-receiving end conducting of the 6th optocoupler IC16, outdoor controller
Pin 1_14_RX_insider receives low level signal, illustrates that outdoor unit control panel is communicated with the first current loop communication circuit
Normally.
Two, assume that outdoor unit current loop communication circuit uses circuit structure two, referring to shown in Fig. 3, Fig. 4:
(1) controller controls relay K3 coil blackout, selects the first current loop communication circuit, shown in Figure 3；Control
The pin 4-35-TX of device exports high level, the switch ways conducting of the first triode N11, the luminous end hair of the first optocoupler IC11
Light.The pin 2-26-COMM-TX of outdoor controller exports high level, and the switch ways of the 4th triode N14 are connected, and the 8th
The luminous end of optocoupler IC18 shines.
The input terminal IN3 of first current loop communication circuit is through relay K3, communication line C and outdoor unit current loop communication circuit
The first input/output terminal IO3 connection；The output end OUT3 of first current loop communication circuit is logical through zero curve N and outdoor unit electric current loop
Believe the second input/output terminal IO4 connection of circuit, it is shown in Figure 3；First current loop communication circuit and outdoor unit electric current loop are logical
Letter circuit can not form electric current loop.
The light-receiving end of second optocoupler IC12 turns off, and the pin 4-36-RX of controller receives high level signal, illustrates outdoor
Machine control panel and the first current loop communication circuit communication abnormality, and shown by display screen, prompt after-sales staff.
The light-receiving end of 7th optocoupler IC17 turns off, and the pin 2-27-COMM-RX of outdoor controller receives low level letter
Number, illustrate outdoor unit control panel and the first current loop communication circuit communication abnormality.
(2) controller control relay K3 coil powers on, and selects the second current loop communication circuit, shown in Figure 4；Control
The pin 4-37-TX1 of device exports high level, and the luminous end of third optocoupler IC13 shines.The pin 2-26- of outdoor controller
COMM-TX exports high level, the switch ways conducting of the 4th triode N14, and the luminous end of the 8th optocoupler IC18 shines.
Second input of the input terminal IN4 of second current loop communication circuit through zero curve N and outdoor unit current loop communication circuit
Output end IO4 connection；The output end OUT4 of second current loop communication circuit is through relay K3, communication line C and outdoor unit electric current loop
First input/output terminal IO3 connection of telecommunication circuit, it is shown in Figure 4；Second current loop communication circuit and outdoor unit electric current loop
Telecommunication circuit forms electric current loop.The current path of electric current loop are as follows: the anode of the first charging capacitor E3 → third optocoupler IC13 by
Light end → the 4th optocoupler IC14 luminous end → R12 → output end OUT4 → relay K3 → input and output of communication line C → first
Hold light-receiving end → the 7th optocoupler IC17 luminous end → second input/output terminal IO4 → zero of the optocoupler IC18 of IO3 → R10 → the 8th
Line N → the charging capacitor of input terminal IN4 → first E3 cathode.Due to having electric current, the luminous end of the 4th optocoupler IC14 in electric current loop
It shines, the luminous end of the 7th optocoupler IC17 shines.
Since the luminous end of the 4th optocoupler IC14 shines, the light-receiving end conducting of the 4th optocoupler IC14, the pin 4- of controller
38-RX1 receives high level signal, illustrates that outdoor unit control panel communicates normally with the second current loop communication circuit, and by aobvious
Display screen is shown, prompts after-sales staff.
Since the luminous end of the 7th optocoupler IC17 shines, the light-receiving end conducting of the 7th optocoupler IC17, outdoor controller
Pin 2-27-COMM-RX receives high level signal, illustrates that outdoor unit control panel communicates just with the second current loop communication circuit
Often.
For the ease of the connection of outdoor unit control panel and detecting tool, in the present embodiment, it is additionally provided with terminal block CN2,
Terminal block CN2 is separately connected firewire L, zero curve N, communication line C, ground wire PE.Outdoor unit control panel and detecting tool respectively with terminal
Arrange CN2 connection, to realize the connection with firewire L, zero curve N, communication line C, ground wire PE respectively, and then realize outdoor unit control panel and
The connection of detecting tool.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model,
It should also belong to the protection scope of the utility model.
Claims (9)
1. a kind of air conditioner outdoor unit control panel detecting tool, it is characterised in that:
The air conditioner outdoor unit control panel includes outdoor controller, outdoor unit current loop communication circuit, the outdoor unit electric current
Ring telecommunication circuit includes two input/output terminals: the first input/output terminal, the second input/output terminal, first input/output terminal
Connection communication line, second input/output terminal connect zero curve；
The detecting tool includes controller, display screen, the first current loop communication circuit, the second current loop communication circuit, relay
Device；
First current loop communication circuit and the second current loop communication circuit respectively include input terminal and output end；
The output end of first current loop communication circuit connects the zero curve,
The input terminal of first current loop communication circuit connect the relay it is normally closed/open stationary contact,
The output end of second current loop communication circuit connects the normal opening/closing stationary contact of the relay,
The input terminal of second current loop communication circuit connects the zero curve,
The movable contact of the relay connects the communication line；Whether the coil of the controller control relay powers on；
The controller acquires the voltage signal of the first current loop communication circuit, the second current loop communication circuit respectively, and according to
Collected voltage signal control display screen is shown.
2. detecting tool according to claim 1, it is characterised in that: first current loop communication circuit includes the first light
Coupling, the second optocoupler, the first triode；
The controller connects the control terminal of the first triode, and one end ground connection of the switch ways of first triode is described
The other end of the switch ways of first triode connects the output end of the luminous end of the first optocoupler, the luminous end of first optocoupler
Input terminal connect DC power supply；
The input terminal of the light-receiving end of first optocoupler connects the input terminal of the first current loop communication circuit, first optocoupler
The output end of light-receiving end connects the input terminal of the luminous end of the second optocoupler, the output end connection of the luminous end of second optocoupler the
The output end of one current loop communication circuit；The input terminal of the light-receiving end of second optocoupler connects controller, and passes through on first
Pull-up resistor connects DC power supply；The output end of the light-receiving end of second optocoupler is grounded.
3. detecting tool according to claim 1, it is characterised in that: second current loop communication circuit includes third light
Coupling, the 4th optocoupler, the second triode；
The controller connects the control terminal of the second triode, and one end ground connection of the switch ways of second triode is described
The output end of the luminous end of the other end connection third optocoupler of the switch ways of second triode, the luminous end of the third optocoupler
Input terminal connect DC power supply；
The input terminal of the light-receiving end of the third optocoupler connects the anode of the first charging capacitor, the cathode of first charging capacitor
Connect the input terminal of the second current loop communication circuit, the anode connection firewire of first charging capacitor；The third optocoupler
The output end of light-receiving end connects the input terminal of the luminous end of the 4th optocoupler, the output end connection of the luminous end of the 4th optocoupler the
The output end of two current loop communication circuits；The input terminal of the light-receiving end of 4th optocoupler connects DC power supply, the 4th light
The output end of the light-receiving end of coupling is grounded by the first pull down resistor, and connects controller.
4. detecting tool according to claim 3, it is characterised in that: the cathode of first charging capacitor connects pressure stabilizing two
The anode of pole pipe, the cathode of the anode connection zener diode of first charging capacitor.
5. detecting tool according to claim 3, it is characterised in that: first charging capacitor anode and cathode it
Between be connected with the first divider resistance.
6. detecting tool according to claim 1, it is characterised in that: the outdoor unit current loop communication circuit includes the 5th
Optocoupler, the 6th optocoupler, third transistor；
The control terminal of the outdoor controller connection third transistor, a termination of the switch ways of the third transistor
Ground, the other end of the switch ways of the third transistor connect the output end of the luminous end of the 5th optocoupler, the 5th optocoupler
Luminous end input terminal connect DC power supply；
The input terminal of the light-receiving end of 5th optocoupler connects the anode of the second charging capacitor, the cathode of second charging capacitor
Connect the second input/output terminal, the anode connection firewire of second charging capacitor；The output of the light-receiving end of 5th optocoupler
The input terminal of the luminous end of the 6th optocoupler of end connection, the output end of the luminous end of the 6th optocoupler connect the first input and output
End；The input terminal of the light-receiving end of 6th optocoupler connects outdoor controller, and connects direct current by the second pull-up resistor
Source；The output end of the light-receiving end of 6th optocoupler is grounded.
7. detecting tool according to claim 1, it is characterised in that: the outdoor unit current loop communication circuit includes the 7th
Optocoupler, the 8th optocoupler, the 4th triode；
The outdoor controller connects the control terminal of the 4th triode, a termination of the switch ways of the 4th triode
Ground, the other end of the switch ways of the 4th triode connect the output end of the luminous end of the 8th optocoupler, the 8th optocoupler
Luminous end input terminal connect DC power supply；
The input terminal of the light-receiving end of 8th optocoupler connects the first input/output terminal, the output of the light-receiving end of the 8th optocoupler
The input terminal of the luminous end of the 7th optocoupler of end connection, the output end of the luminous end of the 7th optocoupler connect the second input and output
End；The input terminal of the light-receiving end of 7th optocoupler connects DC power supply, and the output end of the light-receiving end of the 7th optocoupler passes through
Second pull down resistor ground connection, and connect outdoor controller.
8. detecting tool according to claim 6, it is characterised in that: the cathode of second charging capacitor connects clamper two
The anode of pole pipe, the cathode of the anode connection clamp diode of second charging capacitor.
9. detecting tool according to claim 6, it is characterised in that: second charging capacitor anode and cathode it
Between be connected with the second divider resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821614578.6U CN209432956U (en) | 2018-09-30 | 2018-09-30 | A kind of air conditioner outdoor unit control panel detecting tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821614578.6U CN209432956U (en) | 2018-09-30 | 2018-09-30 | A kind of air conditioner outdoor unit control panel detecting tool |
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|---|---|
| CN209432956U true CN209432956U (en) | 2019-09-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848934A (en) * | 2019-11-22 | 2020-02-28 | 广州视源电子科技股份有限公司 | Test system for current loop communication circuit and air conditioner |
-
2018
- 2018-09-30 CN CN201821614578.6U patent/CN209432956U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848934A (en) * | 2019-11-22 | 2020-02-28 | 广州视源电子科技股份有限公司 | Test system for current loop communication circuit and air conditioner |
| CN110848934B (en) * | 2019-11-22 | 2022-01-28 | 广州视源电子科技股份有限公司 | Test system for current loop communication circuit and air conditioner |
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Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee after: CAOS Chuangzhi IOT Technology Co.,Ltd. Patentee after: QINGDAO DINGXIN ELECTRONICS TECHNOLOGY Co.,Ltd. Patentee after: FOSHAN SHUNDE HAIER INTELLIGENT ELECTRONIC Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee before: QINGDAO HAIER INTELLIGENT ELECTRONICS Co.,Ltd. Patentee before: QINGDAO DINGXIN ELECTRONICS TECHNOLOGY Co.,Ltd. Patentee before: FOSHAN SHUNDE HAIER INTELLIGENT ELECTRONIC Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee after: CAOS Chuangzhi IOT Technology Co.,Ltd. Patentee after: QINGDAO DINGXIN ELECTRONICS TECHNOLOGY CO.,LTD. Patentee after: Foshan Shunde Haier Intelligent Electronic Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee before: CAOS Chuangzhi IOT Technology Co.,Ltd. Patentee before: QINGDAO DINGXIN ELECTRONICS TECHNOLOGY CO.,LTD. Patentee before: FOSHAN SHUNDE HAIER INTELLIGENT ELECTRONIC CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder |