CN206147061U - Speed regulation voltage switching circuit and power panel - Google Patents
Speed regulation voltage switching circuit and power panel Download PDFInfo
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- CN206147061U CN206147061U CN201620727449.2U CN201620727449U CN206147061U CN 206147061 U CN206147061 U CN 206147061U CN 201620727449 U CN201620727449 U CN 201620727449U CN 206147061 U CN206147061 U CN 206147061U
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- 238000004088 simulation Methods 0.000 claims description 25
- 239000004065 semiconductor Substances 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 14
- 230000000087 stabilizing effect Effects 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
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- 239000000853 adhesive Substances 0.000 description 1
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Abstract
The utility model discloses a speed governing voltage switching circuit and power strip, wherein, speed governing voltage switching circuit includes: a power supply unit for supplying power; the switching unit is connected with the power supply unit and used for switching between different speed regulation voltage input signal sources; the control unit is connected between the power supply unit and the switching unit and used for controlling the switching-on and switching-off of the switching unit and the power supply unit according to an input gating signal so as to enable the switching unit to switch according to the switching-on and switching-off. The test can be carried out on various speed regulation modes of the air conditioner direct current brushless motor, and the test efficiency is improved. And circuit faults caused by misoperation in manual switching can be avoided, and the reliability of detection is improved.
Description
Technical field
This utility model is related to direct-current air conditioner technical field, more particularly to a kind of speed electric switching circuit and power supply
Plate.
Background technology
DC brushless motor speed governing in air-conditioning is realized generally by the way of adjustment speed electric, i.e., by adjusting direct current
The driving voltage of brushless electric machine is realizing the purpose of controlled motor rotating speed.For example：Speed electric is adjusted by bleeder circuit to realize
Speed governing is simulated in open loop.Often only possesses open loop simulation speed-regulating function in existing test power supply frock.
But, at present can using various modes of speed regulation in air-conditioning different types of DC brushless motor adjust
Speed.In project development and production test procedure, if the mode of speed regulation of motor is not open loop simulation mode of speed regulation, can only root
Test power supply frock is changed according to the mode of speed regulation of motor.Exploitation and production efficiency are had a strong impact on.
The content of the invention
In view of this, this utility model embodiment provides a kind of speed electric switching circuit and power panel, existing to solve
Different modes of speed regulation needs the technical problem for changing test fixture in technology.
In a first aspect, this utility model embodiment provides a kind of speed electric switching circuit, including：
Power subsystem, the power subsystem is used to provide power supply；
Switch unit, is connected with the power subsystem, and the switch unit is used in the different speed electric of air conditioner motor
Switch between input signal source；
Control unit, described control unit is connected between the power subsystem and the switch unit and is connected, the control
Unit processed is used to control the break-make of the switch unit and the power subsystem according to the gating signal of input, so that described cut
Change unit to be switched over according to break-make.
Further, the switch unit includes：Relay or optical coupled switch.
Further, described control unit, including：
Active switching devices, the active switch part is used to control the switch unit according to the gating signal of input
Break-make.
Further, the active switching devices are audion, and the base stage of the audion is defeated with the gating signal
Go out end to be connected, the colelctor electrode of the audion is connected respectively with power subsystem and switch unit, the transmitting of the audion
Pole is grounded.
Further, the active switching devices are metal-oxide-semiconductor,
The grid of the metal-oxide-semiconductor is connected with the outfan of the gating signal, the source electrode of the metal-oxide-semiconductor respectively with power supply
Unit is connected with switch unit, the grounded drain of the metal-oxide-semiconductor.
Further, described control unit also includes:Filtering subunit, the filtering subunit is used to filter gating signal
In high-frequency signal；The filtering subunit is connected respectively with the input and earth terminal of the gating signal.
Further, the filtering subunit includes：The resistance being connected in parallel and electric capacity, the resistance being connected in parallel and
Electric capacity is connected respectively with the input and earth terminal of gating signal.
Further, if the switch unit includes relay, the switch unit also includes：
Electric current releasing unit, the electric current releasing unit is used in relay short circuit, release relay coil
The electric current of generation.
Further, the electric current releasing unit, including：In parallel diode and electric capacity, the diode in parallel and
Electric capacity first end is connected with the first end of the coil of the relay, the diode in parallel and the end of electric capacity second with it is described
Second end of the coil of relay is connected, the input end grounding of the diode.
Further, the circuit also includes：Divider resistance, the first end of the divider resistance is connected with power subsystem
Connect, the second end and the described control unit and switch unit of the divider resistance are respectively connected with.
Further, the circuit also includes：Bi-directional voltage stabilizing diode, the first end of the bi-directional voltage stabilizing diode with
Power subsystem is connected, and the second end and the described control unit and switch unit of the bi-directional voltage stabilizing diode are respectively connected with.
Second aspect, this utility model embodiment additionally provides a kind of power panel, including：
First input interface, for receiving open loop simulation speed electric signal；With
Second input interface, for receiving the speed electric signal of speed adjusting plate output；With
The speed electric switching circuit that above-described embodiment is provided.
Speed electric switching circuit and power panel that this utility model embodiment is provided, by the gating signal according to input
The break-make of the switch unit and the power subsystem is controlled, so that switch unit can be in different speed electric input letters
Switch between number source.For various modes of speed regulation of air conditioner direct current brushless motor all can be tested, test is improve
Efficiency.And the fault caused because of the maloperation of appearance in manual switching can be avoided, improve the reliability of detection.
Description of the drawings
It is of the present utility model by reading the detailed description made to non-limiting example made with reference to the following drawings
Other features, objects and advantages will become more apparent upon：
Fig. 1 is the structural representation of the speed electric switching circuit that this utility model embodiment one is provided；
Fig. 2 is open loop simulation speed electric signal electricity in the speed electric switching circuit that this utility model embodiment one is provided
The structural representation on road；
Fig. 3 is the speed electric switching circuit composition structural representation that this utility model embodiment two is provided；
Fig. 4 is the speed electric switching circuit composition structural representation that this utility model embodiment three is provided；
Fig. 5 is the interface connection diagram of the power panel that this utility model example IV is provided.
Specific embodiment
With reference to the accompanying drawings and examples the utility model is described in further detail.It is understood that herein
Described specific embodiment is used only for explanation this utility model, rather than to restriction of the present utility model.Further need exist for
It is bright, for the ease of description, the part related to this utility model rather than full content are illustrate only in accompanying drawing.
Embodiment one
Fig. 1 is the structural representation of the speed electric switching circuit that this utility model embodiment one is provided.The present embodiment is carried
For speed electric switching circuit can be provided on the power panel of air conditioner direct current brushless motor, and can be input into inhomogeneity
The speed electric of type is switched over.Referring to Fig. 1, the speed electric switching circuit includes：
Power subsystem, the power subsystem is used to provide power supply；Switch unit, is connected with the power subsystem, described to cut
Unit is changed for switching between different speed electric input signal sources；Control unit, described control unit is connected to
It is connected between the power subsystem and the switch unit, described control unit is used for according to the gating signal control of input
The break-make of switch unit and the power subsystem, so that the switch unit is switched over according to break-make.
Wherein, power subsystem can be low-tension supply, for providing low tension for switching circuit.Exemplary, the electricity
Source unit can export+15V voltages.
One kind that control unit can be selected in active switching devices and single-chip microcomputer, above-mentioned device can be according to the letter of input
Number, control the conducting of power subsystem and switch unit.
Switch unit can realize that the switching switch can be accessed not according to present power-up condition selecting using switching switch
Same speed electric input signal source.
Not only can be switched between two speed electric input signal sources using above-mentioned technical proposal, and by multiple
Foregoing circuit and corresponding input source are realized being switched between two or more speed electric input signal source, its operation principle
It is identical with the above, will not be described here.
Fig. 2 is open loop simulation speed electric signal electricity in the speed electric switching circuit that this utility model embodiment one is provided
The structural representation on road.Generally the mode of speed regulation of air conditioner direct current brushless motor is that mode of speed regulation is simulated in open loop.Speed governing is simulated in open loop
Mode can simulate speed electric signal circuit and be adjusted by the open loop of Fig. 2.Referring to Fig. 2, divider resistance R11 with can power transformation
Resistance R10 series connection, and constitute loop, open loop simulation speed electric output interface VSP1 and variable resistance with 15V power supplys and earth terminal
Resistance adjustment end be connected.By adjusting variable-resistance resistance, there is phase in the voltage for making variable-resistance resistance adjustment end
The change answered, so realize adjustment open loop simulation speed electric purpose additionally, also can at variable-resistance resistance adjustment end and
Shunt capacitance C13 and polar capacitor C12 between earth terminal, can reduce open loop simulation when variable-resistance resistance value is adjusted
The voltage pulsation of speed electric output interface VSP1.
The speed electric switching circuit that the present embodiment is provided, by the gating signal according to input the switch unit is controlled
With the break-make of the power subsystem so that switch unit can be cut between different speed electric input signal sources
Change.For various modes of speed regulation of air conditioner direct current brushless motor all can be tested, the efficiency of test is improve.And can avoid because
The fault that the maloperation occurred in manual switching causes, improves the reliability of detection.
Fig. 2 is open loop simulation speed electric signal electricity in the speed electric switching circuit that this utility model embodiment one is provided
The structural representation on road.Generally the mode of speed regulation of air conditioner direct current brushless motor is that mode of speed regulation is simulated in open loop.Speed governing is simulated in open loop
Mode can simulate speed electric signal circuit and be adjusted by the open loop of Fig. 2.Referring to Fig. 2, divider resistance R11 with can power transformation
Resistance R10 series connection, and constitute loop, open loop simulation speed electric output interface VSP1 and variable resistance with 15V power supplys and earth terminal
Resistance adjustment end be connected.By adjusting variable-resistance resistance, there is phase in the voltage for making variable-resistance resistance adjustment end
The change answered, so realize adjustment open loop simulation speed electric purpose additionally, also can at variable-resistance resistance adjustment end and
Shunt capacitance C13 and polar capacitor C12 between earth terminal, can reduce open loop simulation when variable-resistance resistance value is adjusted
The voltage pulsation of speed electric output interface VSP1.
Embodiment two
Fig. 3 is the speed electric switching circuit composition structural representation that this utility model embodiment two is provided, in this enforcement
In example, control unit is specifically optimized for audion, the base stage of the audion is connected with the outfan of the gating signal,
The colelctor electrode of the audion is connected respectively with power subsystem and switch unit, the grounded emitter of the audion.And will
Switch unit is specifically optimized for relay.Referring to Fig. 3, the speed electric switching circuit, including：
Power subsystem, can export+15V voltages.The power subsystem respectively with the colelctor electrode of audion and relay
Input is connected.
The base stage of audion is connected with the outfan KEY4 of the gating signal, the grounded emitter of audion.
The input of relay is connected with power subsystem, the output head grounding of relay.The switch of relay is used to lead to
Disconnect the connection of ring simulation speed electric output interface VSP1 and speed electric input interface.
With reference to the course of work of fast voltage commutation circuit the speed electric switching circuit that the present embodiment is provided is made into
The description of one step.
If without the input of other speed electrics, in the outfan KEY4 not output signals of gating signal.In gating
The outfan KEY4 of signal not output signal when, the base stage no signal of audion, audion be in cut-off state.Relay K2 leads to
The connection with power subsystem is crossed, in "on" position, adhesive is switched by relay K2, connect open loop simulation speed electric output
Mouth VSP1 is connected with speed electric input interface.And then to motor control panel output open loop simulation speed electric signal.
If the input of other speed electrics, then outfan KEY4 output signals of gating signal.In gating signal
During outfan KEY4 output signals, the base stage of audion has input voltage signal, and audion is in the conduction state.Power subsystem leads to
Cross audion to be directly grounded, make relay be in short-circuit condition.Relay K2 is power failure state, is beaten by relay K2 switches
Open, open loop simulation speed electric output interface VSP1 is disconnected with speed electric input interface, and then to motor control panel output
Other speed electric signals, for example：Closed loop PWM speed-regulating signal and closed-loop simulation speed-regulating signal etc..
In a preferred implementation of the present embodiment, described control unit also includes:Filtering subunit, the filtering
Subelement is used to filter the high-frequency signal in gating signal；The filtering subunit respectively with the input of the gating signal and
Earth terminal is connected.RC in parallel plays the role of in circuit high-frequency signal of decaying, i.e., the high-frequency signal in gating signal is produced
The effect of filtering.
In another preferred implementation of the present embodiment, switch unit also includes：Electric current releasing unit, the electric current
Releasing unit is used in relay short circuit, the electric current that release relay coil is produced.The electric current releasing unit difference
It is connected with the two ends of relay.Electric current releasing unit, including：The diode D12 and electric capacity C32 of parallel connection, two poles in parallel
Pipe D12 and electric capacity C32 first ends are connected with the first end of the coil of the relay K2, the diode D12 in parallel and
The ends of electric capacity C32 second are connected with the second end of the coil of the relay K2, the input end grounding of the diode D12.
In the outfan KEY4 output signals of gating signal, relay K2 forms the coil in short circuit, but relay K2
Electric current can be generated in original magnetic field, the base stage of audion can be affected.To avoid the impact to transistor base.In parallel
Diode D12 and electric capacity C32 can discharge relay coil electromagnetism sensing produce electric current.Additionally, the circuit is also
Including：Divider resistance R50, the first end of the divider resistance R50 is connected with power subsystem, and the of the divider resistance R50
Two ends are respectively connected with described control unit and switch unit.By divider resistance R50, transistor base can be effectively adjusted
With the magnitude of voltage at relay end, the purpose of protection audion and relay is realized.
In a preferred implementation of the present embodiment, the circuit also includes：Bi-directional voltage stabilizing diode D13, it is described
The first end of bi-directional voltage stabilizing diode D13 is connected with power subsystem, second end of the bi-directional voltage stabilizing diode D13 with it is described
Control unit and switch unit are respectively connected with.Bi-directional voltage stabilizing diode has the effect of bi-directional voltage stabilizing, such as two voltage stabilizings two
Pole pipe is reversely contacted, it is possible to achieve overvoltage protection is carried out to the device in circuit.
Embodiment three
Fig. 4 is that the speed electric switching circuit that this utility model embodiment three is provided constitutes structural representation, the present embodiment
Based on above-described embodiment, in the present embodiment, control unit is specifically optimized for metal-oxide-semiconductor, the grid of the metal-oxide-semiconductor and institute
The outfan for stating gating signal is connected, and the source electrode of the metal-oxide-semiconductor is connected respectively with power subsystem and switch unit, described
The grounded drain of metal-oxide-semiconductor..And switch unit is specifically optimized for optical coupled switch.Referring to Fig. 4, the speed electric switching circuit,
Including：
Power subsystem, can export+15V voltages.The power subsystem is defeated with the source electrode of metal-oxide-semiconductor and optical coupled switch respectively
Enter end to be connected.
The grid of metal-oxide-semiconductor is connected with the outfan KEY4 of the gating signal, the grounded drain of metal-oxide-semiconductor.
The input of relay is connected with power subsystem, the output head grounding of relay.The switch of relay is used to lead to
Disconnect the connection of ring simulation speed electric output interface VSP1 and speed electric input interface.
With reference to the course of work of fast voltage commutation circuit the speed electric switching circuit that the present embodiment is provided is made into
The description of one step.
If without the input of other speed electrics, in the outfan KEY4 not output signals of gating signal.In gating
The outfan KEY4 of signal not output signal when, the grid no signal of metal-oxide-semiconductor, metal-oxide-semiconductor be in cut-off state.Optical coupled switch passes through
With the connection of power subsystem, in "on" position, speed electric output interface VSP1 and speed electric input interface are simulated in open loop
Connection.And then to motor control panel output open loop simulation speed electric signal.
If the input of other speed electrics, then outfan KEY4 output signals of gating signal.In gating signal
During outfan KEY4 output signals, the grid of metal-oxide-semiconductor has input voltage signal, and metal-oxide-semiconductor is in the conduction state.Power subsystem passes through
Metal-oxide-semiconductor is directly grounded, and makes optical coupled switch be in short-circuit condition., open loop simulation speed electric output interface VSP1 is made with speed governing electricity
Pressure input interface disconnects, and then exports other speed electric signals to motor control panel.
As shown in figure 4, described control unit also includes:Filtering subunit, for filtering gating signal in high-frequency signal.
The circuit also equally includes divider resistance R50 and bi-directional voltage stabilizing diode D13, and its effect is identical with principle above-described embodiment,
Will not be described here.
Example IV
Present embodiments provide a kind of power panel.Different speed electric modes can be tested.The power panel includes：
First input interface, for receiving open loop simulation speed electric signal；With the second input interface, for receive speed adjusting plate output
Speed electric signal；The speed electric switching circuit provided with above-described embodiment.Fig. 5 is that this utility model example IV is provided
The interface connection diagram of power panel.Two interfaces of power panel are respectively referring to Fig. 5, J1 and J2.In the present embodiment, J1 connects
For connecting open loop simulation speed electric signal, J2 interfaces are used to connect other speed electric signals mouth, for example：Closed loop PWM is adjusted
Fast signal and closed-loop simulation speed-regulating signal etc..Exemplary, J2 interfaces can be used for connection and produce closed loop PWM speed-regulating signal or closed loop
The small-sized speed adjusting plate of simulation speed-regulating signal.When J2 interfaces are not inserted into small-sized speed adjusting plate, power panel accesses the speed governing electricity of J1 interfaces
Pressure signal.When J2 interfaces insert small-sized speed adjusting plate, the single-chip microcomputer on small-sized speed adjusting plate exports a high level signal extremely automatically
KEY4 interfaces so that the speed electric switching circuit on power panel realizes cut-out J1 interfaces according to the high level signal of KEY4 interfaces
Speed electric signal, connect J2 interfaces speed electric signal.The automatic switchover of speed-regulating signal is realized, speed governing can be avoided again
Signal is disorderly.
Note, above are only preferred embodiment of the present utility model and institute's application technology principle.Those skilled in the art's meeting
Understand, this utility model is not limited to specific embodiment described here, can carry out for a person skilled in the art various bright
Aobvious change, readjust and substitute without departing from protection domain of the present utility model.Therefore, although by above example
This utility model is described in further detail, but this utility model is not limited only to above example, without departing from
In the case that this utility model is conceived, more other Equivalent embodiments can also be included, and scope of the present utility model is by appended
Right determine.
Claims (12)
1. a kind of speed electric switching circuit, it is characterised in that include：
Power subsystem, the power subsystem is used to provide power supply；
Switch unit, is connected with the power subsystem, and the switch unit is used in the different speed electric input of air conditioner motor
Switch between signal source；
Control unit, described control unit is connected between the power subsystem and the switch unit and is connected, and the control is single
Unit is used to control the break-make of the switch unit and the power subsystem according to the gating signal of input, so that the switching is single
Unit switches over according to break-make.
2. circuit according to claim 1, it is characterised in that the switch unit includes：Relay or optical coupled switch.
3. circuit according to claim 1, it is characterised in that described control unit, including：
Active switching devices, the active switch part is used to control the logical of the switch unit according to the gating signal of input
It is disconnected.
4. circuit according to claim 3, it is characterised in that the active switching devices are audion, the audion
Base stage be connected with the outfan of the gating signal, the colelctor electrode of the audion respectively with power subsystem and switch unit
It is connected, the grounded emitter of the audion.
5. circuit according to claim 3, it is characterised in that the active switching devices are metal-oxide-semiconductor,
The grid of the metal-oxide-semiconductor is connected with the outfan of the gating signal, the source electrode of the metal-oxide-semiconductor respectively with power subsystem
It is connected with switch unit, the grounded drain of the metal-oxide-semiconductor.
6. the circuit according to claim 4 or 5, it is characterised in that described control unit also includes:Filtering subunit, institute
State the high-frequency signal that filtering subunit is used to filter in gating signal；The filtering subunit is defeated with the gating signal respectively
Enter end to be connected with earth terminal.
7. circuit according to claim 6, it is characterised in that the filtering subunit includes：The resistance that is connected in parallel and
Electric capacity, the resistance being connected in parallel and electric capacity are connected respectively with the input and earth terminal of gating signal.
8. circuit according to claim 2, it is characterised in that if the switch unit includes relay, the switching
Unit also includes：
Electric current releasing unit, the electric current releasing unit is used in relay short circuit, and release relay coil is produced
Electric current.
9. circuit according to claim 8, it is characterised in that the electric current releasing unit, including：In parallel diode and
Electric capacity, the diode in parallel and electric capacity first end are connected with the first end of the coil of the relay, the parallel connection
Diode and the end of electric capacity second are connected with the second end of the coil of the relay, the input end grounding of the diode.
10. circuit according to claim 1, it is characterised in that the circuit also includes：Divider resistance, the partial pressure electricity
The first end of resistance is connected with power subsystem, the second end and described control unit and the switch unit difference phase of the divider resistance
Connection.
11. circuits according to claim 1, it is characterised in that the circuit also includes：Bi-directional voltage stabilizing diode, it is described
The first end of bi-directional voltage stabilizing diode is connected with power subsystem, and the second end of the bi-directional voltage stabilizing diode is single with the control
Unit and switch unit are respectively connected with.
12. a kind of power panels, it is characterised in that include：
First input interface, for receiving open loop simulation speed electric signal；With
Second input interface, for receiving the speed electric signal of speed adjusting plate output；With
The arbitrary described speed electric switching circuit of claim 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620727449.2U CN206147061U (en) | 2016-07-08 | 2016-07-08 | Speed regulation voltage switching circuit and power panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620727449.2U CN206147061U (en) | 2016-07-08 | 2016-07-08 | Speed regulation voltage switching circuit and power panel |
Publications (1)
| Publication Number | Publication Date |
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| CN206147061U true CN206147061U (en) | 2017-05-03 |
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ID=58616802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620727449.2U Active CN206147061U (en) | 2016-07-08 | 2016-07-08 | Speed regulation voltage switching circuit and power panel |
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| Country | Link |
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| CN (1) | CN206147061U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054077A (en) * | 2016-07-08 | 2016-10-26 | 珠海格力电器股份有限公司 | Speed regulation voltage switching circuit and power panel |
-
2016
- 2016-07-08 CN CN201620727449.2U patent/CN206147061U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054077A (en) * | 2016-07-08 | 2016-10-26 | 珠海格力电器股份有限公司 | Speed regulation voltage switching circuit and power panel |
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