CN108279338A - Household electrical appliance and solenoid actuated detection method and device for household electrical appliance - Google Patents
Household electrical appliance and solenoid actuated detection method and device for household electrical appliance Download PDFInfo
- Publication number
- CN108279338A CN108279338A CN201710007780.6A CN201710007780A CN108279338A CN 108279338 A CN108279338 A CN 108279338A CN 201710007780 A CN201710007780 A CN 201710007780A CN 108279338 A CN108279338 A CN 108279338A
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- Prior art keywords
- level signal
- control port
- signal
- electromagnet
- driving unit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/0802—Control mechanisms for pressure-cookers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/09—Safety devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/1253—Measuring galvano-magnetic properties
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Magnetically Actuated Valves (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Solenoid actuated detection method and device the invention discloses a kind of household electrical appliance and for household electrical appliance, the described method comprises the following steps：After receiving fault detect instruction, high level signal, low level signal or pwm signal are exported respectively to the first control port and the second control port；The level signal of the other end of electromagnet coil is obtained, and judges whether electromagnet, the first driving unit and the second driving unit break down according to the level signal of the other end of the signal of the first control port, the signal of the second control port and electromagnet coil.This method can effectively judge whether electromagnet and driving unit break down according to the signal of control port and the level signal of electromagnet coil, abnormal or damage occur to effectively avoid the problem that continuing to household electrical appliance caused by work when electromagnet or driving unit are damaged.
Description
Technical field
The present invention relates to household electrical appliance technical field, more particularly to a kind of solenoid actuated detection sides for household electrical appliance
Method, a kind of solenoid actuated detection device for household electrical appliance and a kind of household electrical appliance with the device.
Background technology
Currently, the household electrical appliance with pressure (such as electric cooker, electric pressure cooking saucepan) are largely all made using electromagnet on the market
For pressure control device.Therefore, the safety and reliability of solenoid actuated is particularly important.And most products on the market
There is no the working conditions of the driving circuit to electromagnet and electromagnet to be detected, when electromagnet or driving circuit abnormality,
It will cause system that can not obtain feedback signal because lacking safe and reliable testing mechanism, and then cause system that can not make corresponding position
Reason, causes certain risk.
For example, when controlling work of electromagnet, and actual electromagnetic iron has damaged, and can not normally be attracted, system is due to nothing
Method knows the working condition of electromagnet, will work on according to normal condition, so that exception occurs in final culinary art effect；
When controlling electromagnet disconnection, if electromagnet has damaged, it can not normally disconnect, product is caused to work always, so as to cause
Safety accident occurs.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, an object of the present invention is to provide a kind of solenoid actuated detection method for household electrical appliance, energy
It is enough effectively to judge whether electromagnet and driving unit occur according to the signal of control port and the level signal of electromagnet coil
There is exception to effectively avoid continuing to household electrical appliance caused by work when electromagnet or driving unit are damaged in failure
Or the problem of damage.
It is another object of the present invention to propose a kind of solenoid actuated detection device for household electrical appliance.
A further object of the present invention is to propose a kind of household electrical appliance.
To achieve the above object, one aspect of the present invention embodiment proposes a kind of solenoid actuated inspection for household electrical appliance
The driving circuit of survey method, the electromagnet includes the first driving unit and the second driving unit, and first driving unit is set
It sets between one end of electromagnet coil and default power supply, second driving unit is arranged in the another of the electromagnet coil
Between end and ground, it is also parallel with first resistor between one end of the electromagnet coil and the other end of the electromagnet coil,
First driving unit includes the first control port, and second driving unit includes the second control port, the method packet
Include following steps：After receiving fault detect instruction, high level signal, low level signal or PWM (Pulse are exported respectively
Width Modulation, pulse width modulation) signal is to first control port and second control port；Obtain institute
The level signal of the other end of electromagnet coil is stated, and according to the signal of first control port, second control port
Signal and the level signal of the other end of the electromagnet coil judge the electromagnet, first driving unit and described
Whether the second driving unit breaks down.
Solenoid actuated detection method according to the ... of the embodiment of the present invention for household electrical appliance refers to receiving fault detect
After order, high level signal, low level signal or pwm signal are exported respectively to the first control port and the second control port, and
The level signal of the other end of electromagnet coil is obtained, and according to the signal of the first control port, the letter of the second control port
Number and the level signal of the other end of electromagnet coil judge whether electromagnet, the first driving unit and the second driving unit occur
Failure.This method can effectively judge electromagnet and driving according to the signal of control port and the level signal of electromagnet coil
Whether unit breaks down, to effectively avoid continuing to household caused by work when electromagnet or driving unit are damaged
There is the problem of abnormal or damage in electric appliance.
According to one embodiment of present invention, the signal according to first control port, second control terminal
The level signal of the signal of mouth and the other end of the electromagnet coil judges the electromagnet, first driving unit and institute
State whether the second driving unit breaks down, including：When the signal of first control port and second control port is equal
For low level signal when, if the level signal of the other end of the electromagnet coil is high level signal, judge described the
One driving unit breaks down；When the level signal of first control port is high level signal and second control port
Level signal be low level signal when, if the level signal of the other end of the electromagnet coil be low level signal,
Judge that the electromagnet breaks down；When the signal of first control port and second control port is high level letter
Number when, if the level signal of the other end of the electromagnet coil be high level signal, judge second driving unit
It breaks down.
According to another embodiment of the invention, the signal according to first control port, second control
The level signal of the other end of the signal of port and the electromagnet coil judge the electromagnet, first driving unit and
Whether second driving unit breaks down, including：When having one in first control port and second control port
The signal of a control port is pwm signal, and the signal of another control port is high level signal, alternatively, first control
When the signal of port and second control port is pwm signal, if the level letter of the other end of the electromagnet coil
Number it is permanent High level signal with the same phase of the pwm signal or the level signal of the other end of the electromagnet coil and holds
The level signal of the other end of continuous first preset time or the electromagnet coil is to continue low level signal and continue described
First preset time then judges that the electromagnet, first driving unit or second driving unit break down.
According to one embodiment of present invention, first driving unit includes：First NPN triode, the first NPN
The base stage of triode is connected by second resistance with first control port, and the base stage of first NPN triode also passes through
3rd resistor is connected with the emitter of first NPN triode to be followed by describedly, and the collector of first NPN triode is logical
It is connected with the default power supply after crossing the 4th resistance；The base stage of first PNP triode, first PNP triode passes through the 5th
Resistance is connected with the collector of first NPN triode, the emitter of first PNP triode and the default power supply phase
Even, the collector of first PNP triode is connected with one end of the electromagnet coil.
According to one embodiment of present invention, second driving unit includes：Second NPN triode, the 2nd NPN
The base stage of triode is connected by the 6th resistance with second control port, and the base stage of second NPN triode also passes through
7th resistance is connected with the emitter of second NPN triode to be followed by describedly, the collector of second NPN triode with
The other end of the electromagnet coil is connected.
To achieve the above object, another aspect of the present invention embodiment proposes a kind of solenoid actuated for household electrical appliance
The driving circuit of detection device, the electromagnet includes the first driving unit and the second driving unit, first driving unit
It is arranged between one end of electromagnet coil and default power supply, second driving unit is arranged in the another of the electromagnet coil
The first electricity is also parallel between one end and ground, between one end of the electromagnet coil and the other end of the electromagnet coil
Resistance, first driving unit include the first control port, and second driving unit includes the second control port, the detection
Device includes：Acquiring unit, the level signal of the other end for obtaining the electromagnet coil；Control unit, the control
Unit is connected with the acquiring unit, first control port and second control port respectively, and described control unit is used
In after receiving fault detect instruction, output high level signal, low level signal or pwm signal to described first are controlled respectively
Port processed and second control port, and according to the signal of first control port, the signal of second control port
Judge that the electromagnet, first driving unit and described second drive with the level signal of the other end of the electromagnet coil
Whether moving cell breaks down.
Solenoid actuated detection device according to the ... of the embodiment of the present invention for household electrical appliance, control unit are receiving event
After barrier detection instruction, high level signal, low level signal or pwm signal to the first control port and second are exported respectively and is controlled
Port, and believed according to the level of the other end of the signal of the first control port, the signal of the second control port and electromagnet coil
Number judge whether electromagnet, the first driving unit and the second driving unit break down.The device can be according to control port
The level signal of signal and electromagnet coil effectively judges whether electromagnet and driving unit break down, to effectively avoid
Household electrical appliance caused by work are continued to when electromagnet or driving unit are damaged the problem of abnormal or damage occurs.
According to one embodiment of present invention, described control unit is according to the signal of first control port, described
The level signal of the other end of the signal of two control ports and the electromagnet coil judges the electromagnet, first driving
When whether unit and second driving unit break down, wherein when first control port and second control terminal
When the signal of mouth is low level signal, if the level signal of the other end of the electromagnet coil is high level signal, institute
It states control unit and then judges that first driving unit breaks down；When the level signal of first control port is high level
When the level signal of signal and second control port is low level signal, if the electricity of the other end of the electromagnet coil
Ordinary mail number is low level signal, and described control unit then judges that the electromagnet breaks down；When first control port and
When the signal of second control port is high level signal, if the level signal of the other end of the electromagnet coil is
High level signal, described control unit then judge that second driving unit breaks down.
According to another embodiment of the invention, described control unit is according to the signal of first control port, described
The level signal of the other end of the signal of second control port and the electromagnet coil judges that the electromagnet, described first drive
When whether moving cell and second driving unit break down, wherein when first control port and second control
The signal of control port is pwm signal there are one in port, and the signal of another control port is high level signal, alternatively, institute
When stating the signal of the first control port and second control port and being pwm signal, if the electromagnet coil is another
The level signal at end is to continue high electricity with the same phase of the pwm signal or the level signal of the other end of the electromagnet coil
Ordinary mail number and continue the first preset time or the electromagnet coil the other end level signal be continue low level signal
And continuing first preset time, described control unit then judges the electromagnet, first driving unit or described
Second driving unit breaks down.
According to one embodiment of present invention, first driving unit includes：First NPN triode, the first NPN
The base stage of triode is connected by second resistance with first control port, and the base stage of first NPN triode also passes through
3rd resistor is connected with the emitter of first NPN triode to be followed by describedly, and the collector of first NPN triode is logical
It is connected with the default power supply after crossing the 4th resistance；The base stage of first PNP triode, first PNP triode passes through the 5th
Resistance is connected with the collector of first NPN triode, the emitter of first PNP triode and the default power supply phase
Even, the collector of first PNP triode is connected with one end of the electromagnet coil.
According to one embodiment of present invention, second driving unit includes：Second NPN triode, the 2nd NPN
The base stage of triode is connected by the 6th resistance with second control port, and the base stage of second NPN triode also passes through
7th resistance is connected with the emitter of second NPN triode to be followed by describedly, the collector of second NPN triode with
The other end of the electromagnet coil is connected.
In addition, the embodiment of the present invention also proposed a kind of household electrical appliance comprising the above-mentioned electricity for household electrical appliance
Magnet drives detection device.
The household electrical appliance of the embodiment of the present invention can be according to the signal of control port by above-mentioned driving detection device
Effectively judge whether electromagnet and driving unit break down with the level signal of electromagnet coil, to effectively avoid when electricity
Magnet or driving unit continue to household electrical appliance caused by work and the problem of abnormal or damage occur when being damaged, improve house
The safety and reliability of electrical appliance.
Description of the drawings
Fig. 1 is the flow chart of the solenoid actuated detection method according to the ... of the embodiment of the present invention for household electrical appliance；
Fig. 2 is the structural schematic diagram of the solenoid actuated detection device according to the ... of the embodiment of the present invention for household electrical appliance；
And
Fig. 3 is the circuit diagram of the solenoid actuated detection device according to an embodiment of the invention for household electrical appliance.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
With reference to the accompanying drawings come describe the embodiment of the present invention for household electrical appliance solenoid actuated detection method, be used for
The solenoid actuated detection device of household electrical appliance and the household electrical appliance with the device.
Fig. 1 is the flow chart of the solenoid actuated detection method according to the ... of the embodiment of the present invention for household electrical appliance.
In an embodiment of the present invention, as shown in Fig. 2, the driving circuit of electromagnet includes the first driving unit and the second drive
Moving cell, the first driving unit are arranged between one end of electromagnet coil and default power supply, and the second driving unit is arranged in electricity
Between the other end and ground of magnet coil, first is also parallel between one end of electromagnet coil and the other end of electromagnet coil
Resistance, the first driving unit include the first control port, and the second driving unit includes the second control port.Wherein, first resistor
For high resistance measurement.
In one embodiment of the invention, as shown in figure 3, the first driving unit may include：First NPN triode,
One PNP triode, second resistance to the 5th resistance.Wherein, the base stage of the first NPN triode passes through second resistance and the first control
Port is connected, and the base stage of the first NPN triode is grounded after being also connected with the emitter of the first NPN triode by 3rd resistor,
The collector of first NPN triode after the 4th resistance with default power supply by being connected.The base stage of first PNP triode passes through the 5th
Resistance is connected with the collector of the first NPN triode, and the emitter of the first PNP triode is connected with default power supply, the first PNP tri-
The collector of pole pipe is connected with one end of electromagnet coil.
Further, as shown in figure 3, the second driving unit may include：Second NPN triode, the 6th resistance and the 7th electricity
Resistance, wherein the base stage of the second NPN triode is connected by the 6th resistance with the second control port, the base stage of the second NPN triode
It is grounded after being also connected with the emitter of the second NPN triode by the 7th resistance, the collector and electromagnet of the second NPN triode
The other end of coil is connected.
It should be noted that an examples of the Fig. 3 only as the present invention, wherein the first driving unit and the second driving are single
Member can also use other circuit structures, not be limited here specifically.
As shown in Figure 1, the solenoid actuated detection method for being used for household electrical appliance may include following steps：
S1 exports high level signal, low level signal or pwm signal extremely respectively after receiving fault detect instruction
First control port and the second control port.
S2 obtains the level signal of the other end of electromagnet coil, and according to the signal of the first control port, the second control
The level signal of the signal of port and the other end of electromagnet coil judges electromagnet, the first driving unit and the second driving unit
Whether break down.
According to one embodiment of present invention, according to the signal of the first control port, the signal and electricity of the second control port
The level signal of the other end of magnet coil judges whether electromagnet, the first driving unit and the second driving unit break down,
Including：When the signal of the first control port and the second control port is low level signal, if electromagnet coil is another
The level signal at end is high level signal, then judges that the first driving unit breaks down；When the level signal of the first control port
When level signal for high level signal and the second control port is low level signal, if the electricity of the other end of electromagnet coil
Ordinary mail number is low level signal, then judges that electromagnet breaks down；When the signal of the first control port and the second control port is equal
For high level signal when, if the level signal of the other end of electromagnet coil be high level signal, judge second driving singly
Member breaks down.
Specifically, as shown in Fig. 2, Sol_Ctrl1 is the first control port, Sol_Ctrl2 is the second control port.When
When electromagnet, the first driving unit and the second driving unit are in normal, in the start-up operation instruction for receiving electromagnet,
Output high level signal is to the first control port and the second control port respectively, so that electromagnet is effectively attracted, electromagnet starts
Work.During work of electromagnet, high level signal or pwm signal can be exported to the second control port, continued simultaneously
High level signal is exported to the first control port, so that electromagnet is maintained at attracting state.When the stopping work for receiving electromagnet
When instructing, low level signal is exported respectively to the first control port and the second control port, so that electromagnet disconnects, electromagnet
It is stopped.
After the fault detect instruction for receiving electromagnet, when output low level signal respectively to the first control port and the
When two control ports, under normal circumstances, the first driving unit is off, and one end of electromagnet coil is disconnected with default power supply
It opens, while the second driving unit is off, the other end and the ground of electromagnet coil disconnect, at this time if in electromagnetism iron wire
The other end of circle detects high level signal, then may determine that the first driving unit breaks down, and such as the first driving unit is sent out
Raw short trouble.
When output high level signal is to the first control port, and exports low level signal to the second control port, normally
In the case of, the first driving unit is in the conduction state, and default power supply is applied to one end of electromagnet coil, at the second driving unit
In off-state, the other end and the ground of electromagnet coil disconnect, if detecting that the other end of electromagnet coil is low electricity at this time
Ordinary mail number then may determine that electromagnet breaks down, as open fault occurs for electromagnet.Special, if the electricity detected
Ordinary mail number is almost 0, then may be that the second driving unit breaks down, and such as short trouble occurs for the second driving unit.
When exporting high level signal to the first control port and the second control port respectively, under normal circumstances, first drives
Moving cell and the second driving unit are in conducting state, and electromagnet coil obtains electric actuation, if detecting electromagnetism iron wire at this time
The other end of circle is high level signal, then may determine that the second driving unit breaks down, and such as the second driving unit is opened
Road failure.
Further, as shown in figure 3, when the signal of the first control port and the second control port is low level signal
When, under normal circumstances, the first NPN triode, the first PNP triode and the second NPN triode are in cut-off state, at this time such as
Fruit detects that the level signal of the other end of electromagnet coil is high level signal, then may determine that the first driving unit occurs
Short trouble occurs for failure, such as the first PNP triode.
When the first control port is high level signal, and the second control port is low level signal, under normal circumstances, first
NPN triode and the first PNP triode are in conducting state, and the second NPN triode is off, at this time if detection
The other end to electromagnet coil is low level signal, then may determine that electromagnet breaks down, as electromagnet is opened a way
Failure.Special, may be that the second driving unit breaks down if the level signal detected is almost 0, such as second
Short trouble occurs for NPN triode.
When the signal of the first control port and the second control port is high level signal, under normal circumstances, the first NPN
Triode, the first PNP triode and the second NPN triode are in conducting state, and electromagnet coil obtains electric actuation, at this time if
It detects that the other end of electromagnet coil is high level signal, then may determine that the second driving unit breaks down, such as second
Open fault occurs for NPN triode.
When judging that electromagnet, the first driving unit or the second driving unit break down, related work circuit is also cut off
So that household electrical appliance are stopped, while sending out alarm by the display interface or sound module of household electrical appliance, with prompt
User repairs.
Therefore, the solenoid actuated detection method according to the ... of the embodiment of the present invention for household electrical appliance, can be according to control
The signal of port and the level signal of electromagnet coil effectively detect whether electromagnet and driving unit break down, so as to
With the working condition of comprehensive monitoring electromagnet and driving unit, and detecting that electromagnet or driving unit break down
Afterwards, it takes corresponding measure to be protected to household electrical appliance in time, is simultaneously emitted by the prompt that reports an error to remind user to repair, protects
Demonstrate,prove functional reliability and the safety of household electrical appliance.
It should be noted that high level, low level drive not only may be used in the first control port and the second control port
Flowing mode can also use the type of drive of pwm signal.
According to one embodiment of present invention, according to the signal of the first control port, the signal and electricity of the second control port
The level signal of the other end of magnet coil judges whether electromagnet, the first driving unit and the second driving unit break down,
Including：When in the first control port and the second control port there are one control port signal be pwm signal, another control terminal
The signal of mouth is high level signal, alternatively, when the signal of the first control port and the second control port is pwm signal, if
The level signal of the other end of electromagnet coil and the level signal of the same phase of pwm signal or the other end of electromagnet coil are
Permanent High level signal and continue the first preset time or electromagnet coil the other end level signal be continue low level
Signal and continue the first preset time, then judges that electromagnet, the first driving unit or the second driving unit break down.Its
In, the first preset time can be demarcated according to actual conditions.
Specifically, when the signal of the first control port is pwm signal, the signal of the second control port is high level signal
When or the signal of the first control port be high level signal, the signal of the second control port is pwm signal or the first control
The signal of port processed and the signal of the second control port are pwm signal, if detecting the electricity of the other end of electromagnet coil
Ordinary mail number and the same phase of pwm signal, or detect that the level signal of the other end of electromagnet coil is high level signal and continues
First preset time, or detect electromagnet coil the other end level signal be low level and continue first it is default when
Between, then judge that electromagnet, the first driving unit or the second driving unit break down, closes the first control port and at this time
The drive signal of two control ports, and the related work circuit for cutting off household electrical appliance is sent out simultaneously with being protected to household electrical appliance
Go out alarm, to remind user to repair.Wherein, the first preset time is more than the period of pwm signal.
In conclusion the solenoid actuated detection method according to the ... of the embodiment of the present invention for household electrical appliance, is receiving
After fault detect instruction, high level signal, low level signal or pwm signal to the first control port and second are exported respectively and is controlled
Port processed, and the level signal of the other end of electromagnet coil is obtained, and the signal according to the first control port, the second control
The level signal of the signal of port and the other end of electromagnet coil judges electromagnet, the first driving unit and the second driving unit
Whether break down.This method can effectively judge electromagnetism according to the signal of control port and the level signal of electromagnet coil
Whether iron and driving unit break down, to effectively avoid continuing to work when electromagnet or driving unit are damaged leading
There is the problem of abnormal or damage in the household electrical appliance of cause.
Fig. 2 is the structural schematic diagram of the solenoid actuated detection device according to the ... of the embodiment of the present invention for household electrical appliance.
As shown in Fig. 2, the driving circuit of electromagnet may include the first driving unit 10 and the second driving unit 20, wherein
First driving unit 10 is arranged between one end of 30 coil of electromagnet and default power supply VCC, and the setting of the second driving unit 20 exists
Between the other end and ground GND of 30 coil of electromagnet, between the other end of 30 coil of one end and electromagnet of 30 coil of electromagnet
It is also parallel with first resistor R1, the first driving unit 10 includes the first control port Sol_Ctrl1, and the second driving unit 20 includes
Second control port Sol_Ctrl2.Coil is damaged when in addition, electromagnet 30 powering off in order to prevent, in 30 line of electromagnet
Diode D1 is also parallel at circle, to carry out afterflow when electromagnet 30 powers off.
Solenoid actuated detection device may include acquiring unit 40 and control unit (not specifically illustrated in figure).Wherein, it obtains
Take unit 40 for obtain 30 coil of electromagnet the other end level signal, control unit respectively with acquiring unit 40, first
Control port Sol_Ctrl1 and the second control port Sol_Ctrl2 is connected, and control unit is used to receive fault detect instruction
Afterwards, high level signal, low level signal or pwm signal are exported respectively to the controls of the first control port Sol_Ctrl1 and second
Port Sol_Ctrl2, and according to the signal of the first control port Sol_Ctrl1, the second control port Sol_Ctrl2 signal and
Whether the level signal of the other end of 30 coil of electromagnet judges electromagnet 30, the first driving unit 10 and the second driving unit 20
It breaks down.
According to one embodiment of present invention, control unit is according to the signal of the first control port Sol_Ctrl1, the second control
The level signal of the other end of 30 coil of signal and electromagnet of port Sol_Ctrl2 processed judges that the driving of electromagnet 30, first is single
When whether member 10 and the second driving unit 20 break down, as the first control port Sol_Ctrl1 and the second control port Sol_
When the signal of Ctrl2 is low level signal, if the level signal for the other end that electromagnetism iron wire 30 encloses is high level signal, control
Unit processed then judges that the first driving unit 10 breaks down；When the level signal of the first control port Sol_Ctrl1 is high level
When the level signal of signal and the second control port Sol_Ctrl2 are low level signal, if the other end of 30 coil of electromagnet
Level signal be low level signal, control unit then judges that electromagnet 30 breaks down；As the first control port Sol_Ctrl1
When being high level signal with the signal of the second control port Sol_Ctrl2, if the level of the other end of 30 coil of electromagnet
Signal is high level signal, and control unit then judges that the second driving unit 20 breaks down.
Specifically, as shown in Fig. 2, when electromagnet 30, the first driving unit 10 and the second driving unit 20 are in just
Chang Shi, control unit export high level signal to the first control terminal respectively in the start-up operation instruction for receiving electromagnet 30
Mouth Sol_Ctrl1 and the second control port Sol_Ctrl2, so that electromagnet 30 is effectively attracted, electromagnet 30 is started to work.In electricity
In 30 course of work of magnet, high level signal or pwm signal can be exported to the second control port Sol_Ctrl2, while after
Continuous output high level signal is to the first control port Sol_Ctrl1, so that electromagnet 30 is maintained at attracting state.When receiving electricity
Magnet 30 be stopped instruction when, export low level signal respectively to the first control port Sol_Ctrl1 and the second control terminal
Mouth Sol_Ctrl2, so that electromagnet 30 disconnects, electromagnet 30 is stopped.
Control unit exports high level signal or low level letter respectively after the fault detect instruction for receiving electromagnet 30
Number to the first control port Sol_Ctrl1 and the second control port Sol_Ctrl2, to realize that solenoid actuated detects.
Wherein, when control unit exports low level signal to the first control port Sol_Ctrl1 and the second control terminal respectively
When mouthful Sol_Ctrl2, under normal circumstances, the first driving unit 10 is off, one end of 30 coil of electromagnet with it is default
Power supply VCC is disconnected, while the second driving unit 20 is off, and the other end and the ground GND of 30 coil of electromagnet are disconnected, this
The other end of the Shi Ruguo control units by acquiring unit 40 in 30 coil of electromagnet detects high level signal, then may determine that
Go out the first driving unit 10 to break down, such as short trouble occurs for the first driving unit 10.
When control unit exports high level signal to the first control port Sol_Ctrl1, and low level signal is exported to the
When two control port Sol_Ctrl2, under normal circumstances, the first driving unit 10 is in the conduction state, and default power supply VCC is applied to
One end of 30 coil of electromagnet, the second driving unit 20 are off, and the other end and ground GND of 30 coil of electromagnet are disconnected
It opens, it, can be at this time if control unit detects that the other end of electromagnet coil is low level signal by acquiring unit 40
Judge that electromagnet 30 breaks down, as open fault occurs for electromagnet 30.Special, if the level signal detected is almost
It is 0, then may be that the second driving unit 20 breaks down, such as short trouble occurs for the second driving unit 20.
When control unit exports high level signal to the first control port Sol_Ctrl1 and the second control port Sol_ respectively
When Ctrl2, under normal circumstances, the first driving unit 10 and the second driving unit 20 are in conducting state, 30 coil of electromagnet
Electric actuation is obtained, at this time if control unit detects that the other end of 30 coil of electromagnet is believed for high level by acquiring unit 40
Number, then it may determine that the second driving unit 20 breaks down, such as open fault occurs for the second driving unit 20.
According to one embodiment of present invention, as shown in figure 3, the first driving unit 10 may include：First NPN triode
Q1, the first PNP triode Q2, second resistance R2,3rd resistor R3, the 4th resistance R4 and the 5th resistance R5.Wherein, the first NPN
The base stage of triode Q1 is connected by second resistance R2 with the first control port Sol_Ctrl1, the base stage of the first NPN triode Q1
GND, the current collection of the first NPN triode Q1 are grounded after being also connected with the emitter of the first NPN triode Q1 by 3rd resistor R3
Pole after the 4th resistance R4 with default power supply VCC by being connected.The base stage of first PNP triode Q2 passes through the 5th resistance R5 and first
The collector of NPN triode Q1 is connected, and the emitter of the first PNP triode Q2 is connected with default power supply VCC, tri- poles the first PNP
The collector of pipe Q2 is connected with one end of 30 coil of electromagnet.
Further, as shown in figure 3, the second driving unit 20 may include：Second NPN triode Q3, the 6th resistance R6 and
7th resistance R7.Wherein, the base stage of the second NPN triode Q3 passes through the 6th resistance R6 and the second control port Sol_Ctrl2 phases
Even, the base stage of the second NPN triode Q3 is grounded after being also connected with the emitter of the second NPN triode Q3 by the 7th resistance R7
The collector of GND, the second NPN triode Q3 are connected with the other end of 30 coil of electromagnet.
As shown in figure 3, the signal as the first control port Sol_Ctrl1 and the second control port Sol_Ctrl2 is low
When level signal, under normal circumstances, the first NPN triode Q1, the first PNP triode Q2 and the second NPN triode Q3 are in
Cut-off state, at this time if control unit detects that the level signal of the other end of 30 coil of electromagnet is by acquiring unit 40
High level signal then may determine that the first driving unit 10 breaks down, and such as short trouble occurs for the first PNP triode Q2.
When the first control port Sol_Ctrl1 is high level signal, the second control port Sol_Ctrl2 is low level signal
When, under normal circumstances, the first NPN triode Q1 and the first PNP triode Q2 are in conducting state, the second NPN triode Q3
It is off, at this time if control unit detects that the other end of 30 coil of electromagnet is low level by acquiring unit 40
Signal then may determine that electromagnet 30 breaks down, as open fault occurs for electromagnet 30.Special, if detect
Level signal is almost 0, then may be that the second driving unit 20 breaks down, and such as short trouble occurs for the second NPN triode Q3.
When the signal of the first control port Sol_Ctrl1 and the second control port Sol_Ctrl2 are high level signal,
Under normal circumstances, the first NPN triode Q1, the first PNP triode Q2 and the second NPN triode Q3 are in conducting state, electricity
30 coil of magnet obtains electric actuation, at this time if control unit detects that the other end of 30 coil of electromagnet is by acquiring unit 40
High level signal then may determine that the second driving unit 20 breaks down, and such as open fault occurs for the second NPN triode Q3.
Finally, control unit is when judging that electromagnet 30, the first driving unit 10 or the second driving unit 20 break down,
Also related work circuit is cut off so that household electrical appliance are stopped, while being sent out by the display interface of household electrical appliance or sound module
Go out alarm, to prompt user to repair.
Therefore, the solenoid actuated detection device according to the ... of the embodiment of the present invention for household electrical appliance, being capable of control port
Signal and the level signal of electromagnet coil effectively detect whether electromagnet and driving unit break down, so as to complete
The working condition of the monitoring electromagnet and driving unit of aspect, and after detecting that electromagnet or driving unit break down, and
Shi Caiyong corresponding measures are simultaneously emitted by the prompt that reports an error to remind user to repair, ensure house to be protected to household electrical appliance
The functional reliability of electrical appliance and safety.
It should be noted that the first control port Sol_Ctrl1 and the second control port Sol_Ctrl2 not only may be used
The type of drive of high level signal, low level signal can also use the type of drive of pwm signal.
According to one embodiment of present invention, control unit is according to the signal of the first control port Sol_Ctrl1, the second control
The level signal of the other end of 30 coil of signal and electromagnet of port Sol_Ctrl1 processed judges that the driving of electromagnet 30, first is single
When whether member 10 and the second driving unit 20 break down, wherein when the first control port Sol_Ctrl1 and the second control port
The signal of control port is pwm signal there are one in Sol_Ctrl2, and the signal of another control port is high level signal, or
When the signal of person, the first control port Sol_Ctrl1 and the second control port Sol_Ctrl2 are pwm signal, if electromagnet
The level signal of the other end of 30 coils and the level signal of the other end of 30 coil of the same phase of pwm signal or electromagnet are to hold
Continue high level signal and the level signal for continuing the other end of 30 coil of the first preset time or electromagnet is to continue low level
Signal and continue the first preset time, control unit then judges electromagnet 30, the first driving unit 10 or the second driving unit
20 break down.
Specifically, when the signal of the first control port Sol_Ctrl1 is pwm signal, the second control port Sol_Ctrl2
Signal is when being high level signal or the signal of the first control port Sol_Ctrl1 is high level signal, the second control port
The signal of Sol_Ctrl2 is pwm signal or the signal and the second control port Sol_ of the first control port Sol_Ctrl1
The signal of Ctrl2 is pwm signal, if control unit detects the other end of 30 coil of electromagnet by acquiring unit 40
Level signal and the same phase of pwm signal, or detect 30 coil of electromagnet the other end level signal be high level signal and
Continue the first preset time, or detects that the level signal of the other end of 30 coil of electromagnet is low level and continues first in advance
If the time, then judge that electromagnet 30, the first driving unit 10 or the second driving unit 20 break down, at this point, control unit
The drive signal of the first control port Sol_Ctrl1 and the second control port Sol_Ctrl2 are closed, and cuts off the phase of household electrical appliance
It closes operating circuit and is simultaneously emitted by alarm to be protected to household electrical appliance, to remind user to repair.Wherein, first
Preset time is more than the period of pwm signal.
Solenoid actuated detection device according to the present invention for household electrical appliance, control unit are receiving fault detect
After instruction, high level signal, low level signal or pwm signal to the first control port and the second control port are exported respectively,
And judged according to the level signal of the other end of the signal of the first control port, the signal of the second control port and electromagnet coil
Whether electromagnet, the first driving unit and the second driving unit break down.The device can according to the signal of control port and
The level signal of electromagnet coil effectively judges whether electromagnet and driving unit break down, to effectively avoid working as electromagnetism
Iron or driving unit continue to household electrical appliance caused by work and the problem of abnormal or damage occur when being damaged.
In addition, the embodiment of the present invention also proposed a kind of household electrical appliance comprising the above-mentioned electricity for household electrical appliance
Magnet drives detection device.
The household electrical appliance of the embodiment of the present invention can be according to the signal of control port by above-mentioned driving detection device
Effectively judge whether electromagnet and driving unit break down with the level signal of electromagnet coil, to effectively avoid when electricity
Magnet or driving unit continue to household electrical appliance caused by work and the problem of abnormal or damage occur when being damaged, improve house
The safety and reliability of electrical appliance.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (11)
1. a kind of solenoid actuated detection method for household electrical appliance, which is characterized in that the driving circuit packet of the electromagnet
The first driving unit and the second driving unit are included, first driving unit is arranged in one end of electromagnet coil and default power supply
Between, second driving unit is arranged between the other end and ground of the electromagnet coil, and the one of the electromagnet coil
First resistor is also parallel between end and the other end of the electromagnet coil, first driving unit includes the first control terminal
Mouthful, second driving unit includes the second control port, be the described method comprises the following steps：
After receiving fault detect instruction, high level signal, low level signal or pwm signal are exported respectively to described first
Control port and second control port；
The level signal of the other end of the electromagnet coil is obtained, and according to the signal of first control port, described
The level signal of the other end of the signal of two control ports and the electromagnet coil judges the electromagnet, first driving
Whether unit and second driving unit break down.
2. being used for the solenoid actuated detection method of household electrical appliance as described in claim 1, which is characterized in that described according to institute
State the level signal of the other end of the signal of the first control port, the signal of second control port and the electromagnet coil
Judge whether the electromagnet, first driving unit and second driving unit break down, including：
When the signal of first control port and second control port is low level signal, if the electromagnet
The level signal of the other end of coil is high level signal, then judges that first driving unit breaks down；
When the level signal that the level signal of first control port is high level signal and second control port is low
When level signal, if the level signal of the other end of the electromagnet coil is low level signal, the electromagnet is judged
It breaks down；
When the signal of first control port and second control port is high level signal, if the electromagnet
The level signal of the other end of coil is high level signal, then judges that second driving unit breaks down.
3. being used for the solenoid actuated detection method of household electrical appliance as described in claim 1, which is characterized in that described according to institute
State the level signal of the other end of the signal of the first control port, the signal of second control port and the electromagnet coil
Judge whether the electromagnet, first driving unit and second driving unit break down, including：
When in first control port and second control port there are one control port signal be pwm signal, it is another
The signal of a control port is high level signal, alternatively, the signal of first control port and second control port is equal
For pwm signal when, if the level signal of the other end of the electromagnet coil and the same phase of the pwm signal or the electricity
The level signal of the other end of magnet coil is permanent High level signal and continues the first preset time or the electromagnetism iron wire
The level signal of the other end of circle be continue low level signal and continue first preset time, then judge the electromagnet,
First driving unit or second driving unit break down.
4. the solenoid actuated detection method as claimed in any one of claims 1-3 for household electrical appliance, which is characterized in that
First driving unit includes：
The base stage of first NPN triode, first NPN triode is connected by second resistance with first control port,
The base stage of first NPN triode be also connected with the emitter of first NPN triode by 3rd resistor be followed by it is described
Ground, the collector of first NPN triode after the 4th resistance with the default power supply by being connected；
First PNP triode, the collection that the base stage of first PNP triode passes through the 5th resistance and first NPN triode
Electrode is connected, and the emitter of first PNP triode is connected with the default power supply, the current collection of first PNP triode
Pole is connected with one end of the electromagnet coil.
5. being used for the solenoid actuated detection method of household electrical appliance as claimed in claim 4, which is characterized in that described second drives
Moving cell includes：
The base stage of second NPN triode, second NPN triode is connected by the 6th resistance with second control port,
The base stage of second NPN triode be also connected with the emitter of second NPN triode by the 7th resistance be followed by it is described
The collector on ground, second NPN triode is connected with the other end of the electromagnet coil.
6. a kind of solenoid actuated detection device for household electrical appliance, which is characterized in that the driving circuit packet of the electromagnet
The first driving unit and the second driving unit are included, first driving unit is arranged in one end of electromagnet coil and default power supply
Between, second driving unit is arranged between the other end and ground of the electromagnet coil, and the one of the electromagnet coil
First resistor is also parallel between end and the other end of the electromagnet coil, first driving unit includes the first control terminal
Mouthful, second driving unit includes the second control port, and the detection device includes：
Acquiring unit, the level signal of the other end for obtaining the electromagnet coil；
Control unit, described control unit respectively with the acquiring unit, first control port and second control terminal
Mouthful be connected, described control unit be used for receive fault detect instruction after, respectively export high level signal, low level signal or
Person's pwm signal is to first control port and second control port, and according to the signal of first control port, institute
The level signal for stating the signal of the second control port and the other end of the electromagnet coil judges the electromagnet, described first
Whether driving unit and second driving unit break down.
7. being used for the solenoid actuated detection device of household electrical appliance as claimed in claim 6, which is characterized in that the control is single
Member is according to the other end of the signal of first control port, the signal of second control port and the electromagnet coil
When level signal judges whether the electromagnet, first driving unit and second driving unit break down, wherein
When the signal of first control port and second control port is low level signal, if the electromagnet
The level signal of the other end of coil is high level signal, and described control unit then judges that event occurs for first driving unit
Barrier；
When the level signal that the level signal of first control port is high level signal and second control port is low
When level signal, if the level signal of the other end of the electromagnet coil is low level signal, described control unit if, is sentenced
The electromagnet that breaks breaks down；
When the signal of first control port and second control port is high level signal, if the electromagnet
The level signal of the other end of coil is high level signal, and described control unit then judges that event occurs for second driving unit
Barrier.
8. being used for the solenoid actuated detection device of household electrical appliance as claimed in claim 6, which is characterized in that the control is single
Member is according to the other end of the signal of first control port, the signal of second control port and the electromagnet coil
When level signal judges whether the electromagnet, first driving unit and second driving unit break down, wherein
When in first control port and second control port there are one control port signal be pwm signal, it is another
The signal of a control port is high level signal, alternatively, the signal of first control port and second control port is equal
For pwm signal when, if the level signal of the other end of the electromagnet coil and the same phase of the pwm signal or the electricity
The level signal of the other end of magnet coil is permanent High level signal and continues the first preset time or the electromagnetism iron wire
The level signal of the other end of circle is to continue low level signal and continue first preset time, and described control unit then judges
The electromagnet, first driving unit or second driving unit break down.
9. the solenoid actuated detection device for household electrical appliance as described in any one of claim 6-8, which is characterized in that
First driving unit includes：
The base stage of first NPN triode, first NPN triode is connected by second resistance with first control port,
The base stage of first NPN triode be also connected with the emitter of first NPN triode by 3rd resistor be followed by it is described
Ground, the collector of first NPN triode after the 4th resistance with the default power supply by being connected；
First PNP triode, the collection that the base stage of first PNP triode passes through the 5th resistance and first NPN triode
Electrode is connected, and the emitter of first PNP triode is connected with the default power supply, the current collection of first PNP triode
Pole is connected with one end of the electromagnet coil.
10. being used for the solenoid actuated detection device of household electrical appliance as claimed in claim 9, which is characterized in that described second
Driving unit includes：
The base stage of second NPN triode, second NPN triode is connected by the 6th resistance with second control port,
The base stage of second NPN triode be also connected with the emitter of second NPN triode by the 7th resistance be followed by it is described
The collector on ground, second NPN triode is connected with the other end of the electromagnet coil.
11. a kind of household electrical appliance, which is characterized in that include as described in any one of claim 6-10 for household electrical appliance
Solenoid actuated detection device.
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| CN201710007780.6A CN108279338B (en) | 2017-01-05 | 2017-01-05 | Household appliance and electromagnet driving detection method and device for household appliance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710007780.6A CN108279338B (en) | 2017-01-05 | 2017-01-05 | Household appliance and electromagnet driving detection method and device for household appliance |
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| CN108279338B CN108279338B (en) | 2020-06-05 |
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| CN108279338B (en) | 2020-06-05 |
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