CN109842091A - Drive control circuit and household appliance - Google Patents
Drive control circuit and household appliance Download PDFInfo
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- CN109842091A CN109842091A CN201910229606.5A CN201910229606A CN109842091A CN 109842091 A CN109842091 A CN 109842091A CN 201910229606 A CN201910229606 A CN 201910229606A CN 109842091 A CN109842091 A CN 109842091A
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Abstract
The present invention provides a kind of drive control circuit and household appliances; wherein; drive control circuit includes: the first protection circuit; for detecting the operating parameter of first assembly; and determined whether to generate Fisrt fault signal according to the operating parameter of first assembly, Fisrt fault signal is exported outward by the failure output pin of the first protection circuit；Second protection circuit; for detecting the operating parameter of the second component; and determined whether to generate the second fault-signal according to the operating parameter of the second component; second fault-signal is exported outward by the failure output pin of the second protection circuit; controller; by the second connection between interrupt pin and the failure output pin of the second protection circuit, a terminal is drawn by the second route；Unidirectional conducting switch, the first line being series between terminal and the failure output pin of the first protection circuit.Technical solution through the invention, the interface for reducing controller occupy, and are conducive to be promoted the miniaturization of drive control circuit and integrated.
Description
Technical field
The present invention relates to field of circuit technology, in particular to a kind of drive control circuit and a kind of household appliance.
Background technique
In general, the automatically controlled core of air conditioner is controller, and controller not only controls each hardware component operation, also to each
The operating status of hardware component is detected, and two interrupt interfaces of controller are respectively connected to the demagnetization protection electricity of compressor
(Fault Out, exception are defeated for the abnormal protection of road and IPM (Intelligent Power Module, intelligent power module)
Circuit out).
It is clear that needing to occupy two interfaces of controller in above-mentioned drive control circuit to detect IPM failure respectively
And compressor fault, this results in the hardware resource of controller excessively to be occupied, and is unfavorable for drive control circuit and further collects
At change and miniaturization.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, the first aspect of the present invention proposes a kind of drive control circuit.
The second aspect of the present invention proposes a kind of household appliance.
In view of this, the first aspect of the present invention provides a kind of drive control circuit, it is suitable for air conditioner, drive control
Circuit includes: the first protection circuit, is determined for detecting the operating parameter of first assembly, and according to the operating parameter of first assembly
Whether Fisrt fault signal is generated, and Fisrt fault signal is exported outward by the failure output pin of the first protection circuit；Second protects
Protection circuit for detecting the operating parameter of the second component, and determines whether to generate the second event according to the operating parameter of the second component
Hinder signal, the second fault-signal is exported outward by the failure output pin of the second protection circuit, controller, interrupt pin and second
It protects by the second connection between the failure output pin of circuit, a terminal is drawn by the second route；One-way conduction is opened
It closes, the first line being series between terminal and the failure output pin of the first protection circuit, wherein if generating Fisrt fault letter
Number and do not generate the second fault-signal, then unidirectional conducting switch control first line conducting, Fisrt fault signal triggering interrupt draws
Foot executes the first interrupt operation, if generating the second fault-signal and not generating Fisrt fault signal, the second fault-signal is through the
Two routes are transmitted to interrupt pin, and trigger interrupt pin and execute the second interrupt operation, and Fisrt fault signal and the second failure are believed
Number difference.
In the technical scheme, the first protection circuit generates Fisrt fault letter when detecting that first assembly breaks down
Number, and exported outward by the failure output pin of the first protection circuit to unidirectional conducting switch and the second protection circuit and existed
It detects and generates the second fault-signal when the second component breaks down, and is outside by the failure output pin of the second protection circuit
Output, wherein the holding of the excellent usually fault-signal of difference between the Fisrt fault signal and second fault-signal
Time, i.e. interrupt pin when receiving Fisrt fault signal and/or the second fault-signal, according to the retention time of fault-signal
Corresponding interrupt operation is executed, is occupied with reducing the interface of controller, is conducive to the miniaturization sum aggregate for promoting drive control circuit
Cheng Hua.
Specifically, if generating Fisrt fault signal, but in the case where not generating second control signal, unidirectional conducting switch
First line conducting is controlled, so that the interrupt pin of Fisrt fault signal trigger controller, to execute the first interrupt operation, if raw
At the second fault-signal, but in the case where not generating Fisrt fault signal, the second fault-signal is through the second line transmission into
Disconnected pin simultaneously triggers the second interrupt operation of execution.
Optionally, the first protection circuit includes the demagnetization protection circuit of compressor, and the second protection circuit includes the exception of IPM
Circuit is protected, correspondingly, signal is protected in the demagnetization of Fisrt fault signal, that is, compressor, the second fault-signal, that is, IPM exception is defeated
The enabled interrupt pin of signal out, Fisrt fault signal and the second fault-signal, usually, Fisrt fault signal and the second event
Hindering signal is low level, drags down interrupt pin to execute interrupt operation, interrupt operation is usually to PFC (Power Factor
Correction, power factor correction module) processing scheme protected, and holding of the controller based on Fisrt fault signal
Difference between time and the retention time of the second fault-signal can determine that failure cause is compressor fault or IPM failure.
For example, the response time of the first interrupt operation emergency stop PFC is 13us~1013us, the second interrupt operation emergency stop PFC
Response time be 0.5us~16us.
In addition, the drive control circuit in above-mentioned technical proposal provided by the invention can also have following supplementary technology special
Sign:
In the above-mentioned technical solutions, further, a length of nanoscale when the holding of Fisrt fault signal, and Fisrt fault is believed
Number holding duration can be determined by controller timing.
In the technical scheme, a length of nanosecond when the holding of Fisrt fault signal, the holding duration can be by controller meters
When determine, controller can be according to keeping duration realize the identification to Fisrt fault signal.
In any of the above-described technical solution, further, when holding of the second fault-signal a length of Microsecond grade, and the and therefore
The holding duration of barrier signal can be determined by controller timing.
In the technical scheme, a length of Microsecond grade when the holding of the second fault-signal, the holding duration can be by controller meters
When determine, controller can be distinguished by the holding duration of the low level signal received Fisrt fault signal and the second failure letter
Number, to execute corresponding interrupt operation according to fault-signal.
In any of the above-described technical solution, further, the holding duration of the second fault-signal is greater than or equal to 25 microseconds.
In the technical scheme, the second protection circuit (abnormity protection circuit of IPM) is generally configured with latch function, to be promoted
The reliability of circuit is counted according to many experiments and is determined, the holding duration of the second fault-signal is greater than or equal to 25 delicate, controllers
Can not only accurately according to keep duration identify the second fault-signal, moreover it is possible in time and be dependably distinguished Fisrt fault signal and
Second fault-signal.
In any of the above-described technical solution, further, unidirectional conducting switch is diode switch, the yin of diode switch
Pole is connected to the failure output pin of the first protection circuit, and the anode of switching diode is connected to terminal, and Fisrt fault signal is
Low level signal, the second fault-signal are low level signal.
In the technical scheme, unidirectional conducting switch is specifically configured to diode switch, the cathode connection of diode switch
To the first protection circuit, that is, the output pin for the protective current that demagnetizes, the anode of diode switch is connected to terminal, and then is connected to
The interrupt pin of controller, the on state of unidirectional conducting switch determine whether first line is connected.
In any of the above-described technical solution, further, if generating Fisrt fault signal and not generating the second fault-signal,
Then unidirectional conducting switch is connected, to drag down interrupt pin, wherein interrupt pin drags down duration corresponding to Fisrt fault signal
Keep duration.
In the technical scheme, if generating Fisrt fault signal, but simultaneously without generating the second fault-signal, control
Unidirectional conducting switch conducting, interrupt pin by Fisrt fault signal down for low level state so that interrupt pin is touched
Hair executes the first interrupt operation, wherein the holding duration for dragging down duration and corresponding to Fisrt fault signal of interrupt pin, so that
Fisrt fault signal can be recognized accurately in controller.
In any of the above-described technical solution, further, if generating the second fault-signal and not generating Fisrt fault signal,
Then unidirectional conducting switch ends, and the second fault-signal drags down interrupt pin through the second route, wherein interrupt pin drags down duration
Holding duration corresponding to the second fault-signal.
In the technical scheme, if generating the second fault-signal, but simultaneously without generating Fisrt fault signal, control
Unidirectional conducting switch cut-off, interrupt pin by the second fault-signal down for low level state so that interrupt pin is touched
Hair executes the second interrupt operation, wherein the holding duration for dragging down duration and corresponding to the second fault-signal of interrupt pin, so that
Controller can accurately distinguish Fisrt fault signal and the second fault-signal, and realization accurately identifies the second fault-signal.
In any of the above-described technical solution, further, if generating Fisrt fault signal and generating the second fault-signal,
Unidirectional conducting switch cut-off, the second fault-signal drag down interrupt pin through the second route, wherein interrupt pin drags down duration pair
It should be in the holding duration of the second fault-signal.
In the technical scheme, if generating Fisrt fault signal and the second fault-signal, unidirectional conducting switch simultaneously
Cut-off drags down interrupt pin by the second fault-signal, executes the second interrupt operation, i.e., ought occur simultaneously demagnetization protection failure and
When IPM failure, it is considered as and IPM failure occurs, it is preferential to execute the corresponding interrupt operation of IPM failure.
In any of the above-described technical solution, further, the first protection circuit is specifically included: sampling module, for acquiring
The coil current of first assembly；Whether comparison module, comparison module are greater than or equal to current threshold for detection coil electric current, than
Compared with the output end that an input terminal of module is connected to sampling module, another input terminal of comparison module accesses reference current,
The output end of comparison module is the failure output pin of the first protection circuit.
In the technical scheme, the first protection circuit includes sampling module and comparison module, passes through sampling module acquisition the
The coil current of one component, and collected coil current is sent to by the output end of sampling module one of comparison module
Input terminal, meanwhile, another input terminal of comparison module receives reference current, when comparison module confirms collected coil electricity
When flow valuve is greater than or equal to preset current threshold, Fisrt fault signal is exported by comparing the output end of module.
Wherein, the above-mentioned detection to coil current, on the one hand, for detecting whether hardware current reaches demagnetization current, separately
On the one hand, for detecting whether there are over current faults, and compressor to be caused to be burned out.
In any of the above-described technical solution, further, the second protection circuit specifically includes intelligent power module, intelligent function
Rate module is configured as the second assembly operating of driving, and detects the load signal of the second component, if intelligent power module is according to negative
Information carrying number determines the second component there are failure, then intelligent power module generates the second fault-signal, and through the second protection circuit
Failure output pin exports outward.
In the technical scheme, the second protection circuit is provided with intelligent power module, for driving the second assembly operating, together
When detect the load signal of the second component, intelligent power module (i.e. IPM and its abnormity protection circuit) can be negative according to what is detected
Information carrying number judges the second component with the presence or absence of failure, when intelligent power module determines that the second component there are when failure, generates second
Fault-signal is exported via failure output pin to the interrupt pin of controller, to trigger the second interrupt operation.
The second aspect of the present invention provides a kind of household appliance, including first assembly and the second component, such as any of the above-described
The drive control circuit provided in technical solution, the first protection circuit connection of drive control circuit to first assembly, and according to
The operating parameter of first assembly determines whether to generate Fisrt fault signal；Second protection circuit connection of drive control circuit is to the
Two components, and determined whether to generate the second fault-signal according to the operating parameter of the second component, wherein the control of drive control circuit
One interrupt pin of device processed can receive Fisrt fault signal and/or the second fault-signal, and controller is according to receiving
Fault-signal, which determines, executes corresponding interrupt operation.
In the technical scheme, household appliance includes the drive control circuit as provided in any of the above-described technical solution, because
This household appliance includes whole beneficial effects of the drive control circuit as provided in any of the above-described technical solution.Meanwhile family
Electric equipment further includes first assembly and the second component, and the first protection circuit connection of drive control circuit drives to first assembly
The second protection circuit connection to the second component of control circuit, and executed in corresponding by issuing corresponding fault-signal control
Disconnected operation, to ensure the stable operation of household appliance.
In the above-mentioned technical solutions, further, household appliance includes air conditioner, refrigerator, fan, cooking apparatus, shadow
At least one of sound equipment and cleaning equipment.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 shows the schematic diagram of drive control circuit according to an embodiment of the invention；
Fig. 2 shows the schematic diagrames of drive control circuit according to another embodiment of the invention；
Fig. 3 shows the schematic diagram of household appliance according to another embodiment of the invention.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 1 shows the schematic diagram of drive control circuit according to an embodiment of the invention.
Fig. 2 shows the schematic diagrames of drive control circuit according to another embodiment of the invention.
As depicted in figs. 1 and 2, in the embodiment of first aspect present invention, a kind of drive control circuit is provided, is applicable in
In air conditioner, drive control circuit includes: the first protection circuit 10, and the operation for detecting first assembly 104 (shown in Fig. 3) is joined
Number, and determined whether to generate Fisrt fault signal according to the operating parameter of first assembly 104, Fisrt fault signal is by the first protection
The failure output pin of circuit 10 exports outward；Second protection circuit 20, for detecting the fortune of the second component 204 (shown in Fig. 3)
Row parameter, and determined whether to generate the second fault-signal according to the operating parameter of the second component 204, the second fault-signal is by second
The failure output pin of protection circuit 20 exports outward, controller 30, and interrupt pin and the failure of the second protection circuit 20 export
By the second connection between pin, a terminal is drawn by the second route；Unidirectional conducting switch 40 is series at terminal and
First line between the failure output pin of one protection circuit 10, wherein if generating Fisrt fault signal and not generating second
Fault-signal, then unidirectional conducting switch 40 controls first line conducting, and Fisrt fault signal triggers interrupt pin and executes in first
Disconnected operation, if generating the second fault-signal and not generating Fisrt fault signal, the second fault-signal through the second line transmission extremely
Interrupt pin, and trigger interrupt pin and execute the second interrupt operation, Fisrt fault signal is different from the second fault-signal.
In the technical scheme, the first protection 10 first assembly of circuit, 104 first assembly 104 is detecting first assembly
104 generate Fisrt fault signal when breaking down, and are exported outward by the failure output pin of the first protection circuit 10 to list
Guide opens up pass 40 and the second protection circuit 20 to be occurred in detection 204 second the 204 to the second component of component 204 of the second component
The second fault-signal, and the failure output pin outside o controller 30 for protecting circuit 20 by second are generated when failure,
In, the retention time of the excellent usually fault-signal of difference between the Fisrt fault signal and second fault-signal, i.e.,
Interrupt pin executes phase when receiving Fisrt fault signal and/or the second fault-signal, according to the retention time of fault-signal
The interrupt operation answered is occupied with reducing the interface of controller 30, is conducive to be promoted the miniaturization of drive control circuit and integrated.
Specifically, if generating Fisrt fault signal, but in the case where not generating second control signal, unidirectional conducting switch
40 control first line conductings, so that the interrupt pin of Fisrt fault signal trigger controller 30, to execute the first interrupt operation,
If generating the second fault-signal, but in the case where not generating Fisrt fault signal, the second fault-signal is through the second line transmission
To interrupt pin and trigger the second interrupt operation of execution.
Optionally, as shown in Fig. 2, circuit 102, the second protection electricity are protected in the demagnetization that the first protection circuit 10 includes compressor
Road 20 includes the abnormity protection circuit of IPM, correspondingly, signal, the second failure are protected in the demagnetization of Fisrt fault signal, that is, compressor
The enabled interrupt pin of the abnormal output signal of signal, that is, IPM, Fisrt fault signal and the second fault-signal, usually, the
One fault-signal and the second fault-signal are low level, drag down interrupt pin to execute interrupt operation, interrupt operation is usually
To the processing scheme that PFC (Power Factor Correction, power factor correction module) is protected, and controller 30
Retention time based on Fisrt fault signal and the difference between the retention time of the second fault-signal, can determine failure cause
For compressor fault or IPM failure.
For example, the response time of the first interrupt operation emergency stop PFC is 13us~1013us, the second interrupt operation emergency stop PFC
Response time be 0.5us~16us.
In addition, the drive control circuit in above-mentioned technical proposal provided by the invention can also have following supplementary technology special
Sign:
In the above-mentioned technical solutions, further, a length of nanoscale when the holding of Fisrt fault signal, and Fisrt fault is believed
Number holding duration can by 30 timing of controller determine.
In the technical scheme, a length of nanosecond when the holding of Fisrt fault signal, the holding duration can be by controllers 30
Timing determines that controller 30 can realize the identification to Fisrt fault signal according to duration is kept.
In any of the above-described technical solution, further, when holding of the second fault-signal a length of Microsecond grade, and the and therefore
The holding duration for hindering signal can be determined by 30 timing of controller.
In the technical scheme, a length of Microsecond grade when the holding of the second fault-signal, the holding duration can be by controllers 30
Timing determines that controller 30 can distinguish Fisrt fault signal and the second event by the holding duration of the low level signal received
Hinder signal, to execute corresponding interrupt operation according to fault-signal.
In any of the above-described technical solution, further, the holding duration of the second fault-signal is greater than or equal to 25 microseconds.
In the technical scheme, the second protection circuit 20 (abnormity protection circuit of IPM) is generally configured with latch function, to mention
The reliability for rising circuit is counted according to many experiments and is determined, the holding duration of the second fault-signal is greater than or equal to 25 delicate, controls
Device 30 accurately can not only identify the second fault-signal according to holding duration, moreover it is possible in time and be dependably distinguished Fisrt fault letter
Number and the second fault-signal.
In any of the above-described technical solution, further, unidirectional conducting switch 40 is diode switch, diode switch
Cathode is connected to the failure output pin of the first protection circuit 10, and the anode of switching diode is connected to terminal, Fisrt fault letter
Number be low level signal, the second fault-signal be low level signal.
In the technical scheme, unidirectional conducting switch 40 is specifically configured to diode switch, and the cathode of diode switch connects
It is connected to the first protection circuit 10, that is, the output pin for the protective current that demagnetizes, the anode of diode switch is connected to terminal, Jin Erlian
It is connected to the interrupt pin of controller 30, the on state of unidirectional conducting switch 40 determines whether first line is connected.
In any of the above-described technical solution, further, if generating Fisrt fault signal and not generating the second fault-signal,
Then unidirectional conducting switch 40 is connected, to drag down interrupt pin, wherein interrupt pin drags down duration corresponding to Fisrt fault signal
Holding duration.
In the technical scheme, if generating Fisrt fault signal, but simultaneously without generating the second fault-signal, control
Unidirectional conducting switch 40 be connected, interrupt pin by Fisrt fault signal down for low level state so that interrupt pin quilt
Triggering executes the first interrupt operation, wherein the holding duration for dragging down duration and corresponding to Fisrt fault signal of interrupt pin, with
Allow controller 30 that Fisrt fault signal is recognized accurately.
In any of the above-described technical solution, further, if generating the second fault-signal and not generating Fisrt fault signal,
Then unidirectional conducting switch 40 ends, and the second fault-signal drags down interrupt pin through the second route, wherein when dragging down of interrupt pin
The long holding duration for corresponding to the second fault-signal.
In the technical scheme, if generating the second fault-signal, but simultaneously without generating Fisrt fault signal, control
Unidirectional conducting switch 40 end, interrupt pin by the second fault-signal down for low level state so that interrupt pin quilt
Triggering executes the second interrupt operation, wherein the holding duration for dragging down duration and corresponding to the second fault-signal of interrupt pin, with
So that controller 30 is accurately distinguished Fisrt fault signal and the second fault-signal, realizes the accurate knowledge to the second fault-signal
Not.
In any of the above-described technical solution, further, if generating Fisrt fault signal and generating the second fault-signal,
Unidirectional conducting switch 40 ends, and the second fault-signal drags down interrupt pin through the second route, wherein interrupt pin drags down duration
Holding duration corresponding to the second fault-signal.
In the technical scheme, if generating Fisrt fault signal and the second fault-signal, unidirectional conducting switch simultaneously
40 cut-offs drag down interrupt pin by the second fault-signal, execute the second interrupt operation, i.e., demagnetization protection failure ought occur simultaneously
When with IPM failure, it is considered as and IPM failure occurs, it is preferential to execute the corresponding interrupt operation of IPM failure.
In any of the above-described technical solution, further, the first protection circuit 10 is specifically included: sampling module, for adopting
Collect the coil current of first assembly 104；Whether comparison module, comparison module are greater than or equal to current threshold for detection coil electric current
Value, an input terminal of comparison module are connected to the output end of sampling module, another input terminal of comparison module accesses reference
Electric current, the output end of comparison module are the failure output pin of the first protection circuit 10.
In the technical scheme, the first protection circuit 10 includes sampling module and comparison module, is acquired by sampling module
The coil current of first assembly 104, and collected coil current is sent to by comparison module by the output end of sampling module
An input terminal, meanwhile, another input terminal of comparison module receives reference current, when comparison module confirm it is collected
When coil current value is greater than or equal to preset current threshold, Fisrt fault signal is exported by comparing the output end of module.
Wherein, the above-mentioned detection to coil current, on the one hand, for detecting whether hardware current reaches demagnetization current, separately
On the one hand, for detecting whether there are over current faults, and compressor to be caused to be burned out.
In any of the above-described technical solution, further, the second protection circuit 20 specifically includes intelligent power module 202,
Intelligent power module 202 is configured as driving the second component 204 operation, and detects the load signal of the second component 204, if intelligence
Power module 202 determines the second component 204 there are failure according to load signal, then intelligent power module 202 generates the second failure
Signal, and the failure output pin through the second protection circuit 20 exports outward.
In the technical scheme, as shown in Fig. 2, the second protection circuit 20 is provided with intelligent power module 202, for driving
The operation of second component 204, while the load signal of the second component 204 is detected, intelligent power module 202 (i.e. IPM and its abnormal guarantor
Protection circuit) the second component 204 can be judged according to the load signal detected with the presence or absence of failure, when intelligent power module 202 is true
Fixed second component 204 generates the second fault-signal, exports via failure output pin to the interruption of controller 30 there are when failure
Pin, to trigger the second interrupt operation.
Fig. 3 shows the schematic diagram of household appliance according to another embodiment of the invention.
As shown in figure 3, household appliance according to another embodiment of the invention, comprising: first assembly 104 and second group
Part 204, as the first protection circuit 10 of the drive control circuit provided in any of the above-described technical solution, drive control circuit connects
To first assembly 104, and determined whether to generate Fisrt fault signal according to the operating parameter of first assembly 104；Drive control electricity
The second protection circuit 20 on road is connected to the second component 204, and determines whether generation the according to the operating parameter of the second component 204
Two fault-signals, wherein an interrupt pin of the controller 30 of drive control circuit can receive Fisrt fault signal and/
Or second fault-signal, controller 30 is determined according to the fault-signal received executes corresponding interrupt operation.
In this embodiment, household appliance includes the drive control circuit as provided in any of the above-described technical solution, therefore
The household appliance includes whole beneficial effects of the drive control circuit as provided in any of the above-described technical solution.Meanwhile household electrical appliances
Equipment further includes first assembly 104 and the second component 204, and the first protection circuit 10 of drive control circuit is connected to first assembly
104, the second protection circuit 20 of drive control circuit is connected to the second component 204, is controlled by issuing corresponding fault-signal
Corresponding interrupt operation is executed, to ensure the stable operation of household appliance.
Typically, the interrupt pin trigger signal of controller is low level signal, when the abnormity protection circuit of IPM exports
Signal is high level signal, and the demagnetization of compressor protection circuit output signal is low level signal, then can be drawn by diode
The interrupt pin of low controller, trigger controller execute the first interrupt processing (operation), when demagnetization protection circuit output signal is
High level signal, and the abnormity protection circuit output signal of IPM is low level signal, the interruption for directly dragging down controller is drawn
Foot, trigger controller execute the second interrupt processing (operation).
The design invention is to detect the time span that input interrupt pin is pulled low by controller to protect to distinguish its signal
Type is protected, because the output signal of demagnetization protection circuit is a signal for fast quick-recovery, and the output extremely of IPM module is that have one
It fixes time the signal of holding, therefore in the execution interrupt function of controller, a threshold value can be set, when interrupting input pin quilt
When the time dragged down is less than threshold value, can determine that can when the time that interruption input pin is pulled low being greater than threshold value for demagnetization protection
It is determined as IPM module exception output protection.
Wherein, it can be MCU (micro-control unit), CPU (central processing unit), Digital Signal Processing that controller 30, which can be,
Chip, single-chip microcontroller and embedded device etc..
In one embodiment of the invention, further, household appliance includes air conditioner, refrigerator, fan, cooking pot
At least one of tool, audio-visual devices and cleaning equipment.
The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, the present invention provides a kind of drive control circuit and
One interrupt pin of household appliance, controller can receive Fisrt fault signal and the second fault-signal, the Fisrt fault
The retention time of the excellent usually fault-signal of difference between signal and second fault-signal, i.e. interrupt pin are receiving
When Fisrt fault signal and/or the second fault-signal, corresponding interrupt operation is executed according to the retention time of fault-signal, to subtract
The interface of few controller occupies, and is conducive to the miniaturization for promoting drive control circuit and integrated.
In description of the invention, term " multiple " then refers to two or more, unless otherwise restricted clearly, term
The orientation or positional relationship of the instructions such as "upper", "lower" is to be merely for convenience of retouching based on orientation or positional relationship described in attached drawing
It states the present invention and simplifies description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention；Term " connection ", " installation ", " fixation " etc. should all
It is interpreted broadly, for example, " connection " may be fixed connection or may be dismantle connection, or integral connection；It can be straight
Connect it is connected, can also be indirectly connected through an intermediary.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the description of the present invention, the description meaning of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Refer to that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present invention, schematic expression of the above terms are not necessarily referring to identical embodiment or example.And
And the particular features, structures, materials, or characteristics of description can be in any one or more of the embodiments or examples with suitable
Mode combines.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of drive control circuit, the drive control circuit is suitable for air conditioner, which is characterized in that the drive control electricity
Road includes:
First protection circuit, determines for detecting the operating parameter of first assembly, and according to the operating parameter of the first assembly
Whether Fisrt fault signal is generated, and the Fisrt fault signal is defeated outward by the failure output pin of the first protection circuit
Out；
Second protection circuit, determines for detecting the operating parameter of the second component, and according to the operating parameter of second component
Whether second fault-signal is generated, and second fault-signal is defeated outward by the failure output pin of the second protection circuit
Out,
Controller passes through the second connection between the interrupt pin and the failure output pin of the second protection circuit,
One terminal is drawn by second route；
Unidirectional conducting switch, the First Line being series between the terminal and the failure output pin of the first protection circuit
Road,
Wherein, if generating the Fisrt fault signal and not generating second fault-signal, the unidirectional conducting switch control
The first line conducting is made, the Fisrt fault signal triggers the interrupt pin and executes the first interrupt operation, if generating institute
It states the second fault-signal and does not generate Fisrt fault signal, then second fault-signal is through second line transmission to described
Interrupt pin, and trigger the interrupt pin and execute the second interrupt operation, the Fisrt fault signal and second failure are believed
Number difference.
2. drive control circuit according to claim 1, which is characterized in that
A length of nanoscale when the holding of the Fisrt fault signal, and the holding duration of the Fisrt fault signal can be described
Controller timing determines.
3. drive control circuit according to claim 1, which is characterized in that
A length of Microsecond grade when the holding of second fault-signal, and described and the holding duration of fault-signal can be described
Controller timing determines.
4. drive control circuit according to any one of claim 1 to 3, which is characterized in that
The holding duration of second fault-signal is greater than or equal to 25 microseconds.
5. drive control circuit according to any one of claim 1 to 3, which is characterized in that
The unidirectional conducting switch is diode switch, and the cathode of the diode switch is connected to the first protection circuit
Failure output pin, the anode of the switching diode are connected to the terminal,
The Fisrt fault signal is low level signal, and second fault-signal is low level signal.
6. drive control circuit according to claim 2, which is characterized in that
If generating the Fisrt fault signal and not generating second fault-signal, the unidirectional conducting switch conducting, with
The interrupt pin is dragged down,
Wherein, the holding duration for dragging down duration and corresponding to the Fisrt fault signal of the interrupt pin.
7. drive control circuit according to claim 3, which is characterized in that
If generating second fault-signal and not generating the Fisrt fault signal, the unidirectional conducting switch cut-off, institute
It states the second fault-signal and drags down the interrupt pin through second route,
Wherein, the holding duration for dragging down duration and corresponding to second fault-signal of the interrupt pin.
8. drive control circuit according to claim 3, which is characterized in that
If generating the Fisrt fault signal and generating second fault-signal, the unidirectional conducting switch cut-off is described
Second fault-signal drags down the interrupt pin through second route,
Wherein, the holding duration for dragging down duration and corresponding to second fault-signal of the interrupt pin.
9. drive control circuit according to any one of claim 1 to 3, which is characterized in that the first protection circuit
It specifically includes:
Sampling module, for acquiring the coil current of first assembly；
Comparison module, the comparison module is for detecting whether the coil current is greater than or equal to current threshold, the comparison
One input terminal of module is connected to the output end of the sampling module, another input terminal of the comparison module accesses reference
Electric current, the output end of the comparison module are the failure output pin of the first protection circuit.
10. drive control circuit according to any one of claim 1 to 3, which is characterized in that
The second protection circuit specifically includes intelligent power module, and the intelligent power module is configured as the second component of driving
Operation, and the load signal of second component is detected,
If the intelligent power module according to the load signal determines second component, there are failure, the intelligent powers
Module generates the second fault-signal, and the failure output pin through the second protection circuit exports outward.
11. a kind of household appliance characterized by comprising
First assembly and the second component；
Drive control circuit as described in any one of claims 1 to 10,
First protection circuit connection of the drive control circuit is to first assembly, and according to the operating parameter of the first assembly
Determine whether to generate Fisrt fault signal；
The second protection circuit connection to the second component of the drive control circuit, and according to the operating parameter of second component
Determine whether to generate the second fault-signal,
Wherein, an interrupt pin of the controller of the drive control circuit can receive the Fisrt fault signal and/
Or second fault-signal, the controller is determined according to the fault-signal received executes corresponding interrupt operation.
12. household appliance according to claim 11, which is characterized in that
The household appliance includes at least one in air conditioner, refrigerator, fan, cooking apparatus, audio-visual devices and cleaning equipment
Kind.
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| CN201910229606.5A CN109842091B (en) | 2019-03-25 | 2019-03-25 | Drive control circuit and household electrical appliance |
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| CN201910229606.5A CN109842091B (en) | 2019-03-25 | 2019-03-25 | Drive control circuit and household electrical appliance |
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| CN109842091B CN109842091B (en) | 2020-06-05 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200990578Y (en) * | 2006-12-29 | 2007-12-12 | 青岛海信空调有限公司 | Air conditioner DC brushless electric machine automatic regulating speed and measuring speed controller |
| CN101093092A (en) * | 2006-06-21 | 2007-12-26 | 科群科技股份有限公司 | Air conditioner |
| JP2008061339A (en) * | 2006-08-30 | 2008-03-13 | Matsushita Electric Ind Co Ltd | Inverter circuit |
| CN102263544A (en) * | 2011-07-15 | 2011-11-30 | 武汉理工大学 | IGBT driving circuit with electrification protection |
| CN204179642U (en) * | 2014-10-27 | 2015-02-25 | 青岛海尔科技有限公司 | A kind of device for overcurrent protection and air-conditioning |
| CN104868436A (en) * | 2015-05-21 | 2015-08-26 | 浙江大学 | Connecting protection system for seabed observational network |
-
2019
- 2019-03-25 CN CN201910229606.5A patent/CN109842091B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093092A (en) * | 2006-06-21 | 2007-12-26 | 科群科技股份有限公司 | Air conditioner |
| JP2008061339A (en) * | 2006-08-30 | 2008-03-13 | Matsushita Electric Ind Co Ltd | Inverter circuit |
| CN200990578Y (en) * | 2006-12-29 | 2007-12-12 | 青岛海信空调有限公司 | Air conditioner DC brushless electric machine automatic regulating speed and measuring speed controller |
| CN102263544A (en) * | 2011-07-15 | 2011-11-30 | 武汉理工大学 | IGBT driving circuit with electrification protection |
| CN204179642U (en) * | 2014-10-27 | 2015-02-25 | 青岛海尔科技有限公司 | A kind of device for overcurrent protection and air-conditioning |
| CN104868436A (en) * | 2015-05-21 | 2015-08-26 | 浙江大学 | Connecting protection system for seabed observational network |
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| CN109842091B (en) | 2020-06-05 |
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