CN100541959C - Fan electromotor control device and method thereof - Google Patents
Fan electromotor control device and method thereof Download PDFInfo
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- CN100541959C CN100541959C CNB2004100199435A CN200410019943A CN100541959C CN 100541959 C CN100541959 C CN 100541959C CN B2004100199435 A CNB2004100199435 A CN B2004100199435A CN 200410019943 A CN200410019943 A CN 200410019943A CN 100541959 C CN100541959 C CN 100541959C
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- fan electromotor
- fan
- microcontroller
- electromotor
- control
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Abstract
The invention discloses fan electromotor control device and method thereof, more detailed saying so about detecting the whether unusual of fan electromotor and controlling the fan electromotor control device of fan electromotor driving and the invention of method thereof.In the present invention, when detecting the defective mode of fan electromotor, the bad signal storage of fan electromotor to separately storage device, is forced to stop the driving of fan electromotor simultaneously.In addition, when power supply again after the addition,, then control fan electromotor not to drive if when detecting the bad signal that has fan electromotor in the storage device.Thus, when fan electromotor was in bad operating state, the control PCB that can prevent to be used to control fan electromotor was damaged.
Description
Technical field
The invention belongs to the refrigerator technical field of motors, more detailed saying so about whether and suitably to control the fan electromotor control device that fan electromotor drives and the invention of method thereof according to the abnormal operation of fan electromotor.
Background technology
The following describes the control method of fan electromotor in the prior art.Fig. 1 points out out the control structure figure that is used for fan electromotor control in the prior art.As shown in the figure, the fan electromotor control device in the prior art includes following several sections: be used for the power suppling part 50 of addition power supply to product; Be used to select the operating function temperature of refrigerator, the signal input part 10 of operation species etc.; Be used for showing the display part 20 of selected operating function to the user; Be used to pass on the fan electromotor 40 of fans drive required drive; Be used to export the microcontroller 30 that said fans motor 40 drives required control signal.Thus, the fan motor 40 by the control of microcontroller 30.
That is, shown in Fig. 1 b, when the arbitrary port in the port of microcontroller 30 receives fan electromotor when using the drive signal of BLDC motor as the present invention's one example, microcontroller 30 will detect the drive signal of fan electromotor 40.Subsequently, the drive signal to fan electromotor 40 output fan electromotors 40 is used for fan motor 40.As a result, the fan motor 40 by the drive signal of output.
In addition, the drive signal that receives in detecting microcontroller 30 has when unusual if be judged as fan electromotor 40, and microcontroller 30 will be exported the abnormality of fan electromotors 40 by the arbitrary port in a plurality of ports to display part 20.The defective mode that will show as a result, fan electromotor 40 by display part 20.
Fig. 2 points out out the state of a control figure of the fan electromotor in the prior art.As shown in Figure 2, the driving of fan electromotor 40 is carried out following in the prior art.At first, be added to power supply in the product and drive cool cycles, carry out heat exchange when making its compression refrigerant to produce cold air, the cold air of generation will supply in the refrigerator.At this moment, with fan motor 40 so that the cold air of cooling can effective supply in refrigerator.
As mentioned above, when fan electromotor 40 drivings and through behind the certain hour, microcontroller 30 will judge whether the operating frequency of fan electromotor reaches the benchmark job frequency.Preset in the microcontroller 30 as fiducial value be used to judge whether fan electromotor 40 work is in the benchmark job frequency of normal condition.Its result, when the operating frequency of fan electromotor 40 reaches the benchmark job frequency that presets, microcontroller 30 will be judged as fan electromotor 40 and be in the driven state.
On the contrary, if when the detection of the operating frequency of the fan electromotor 40 that receives in the microcontroller 30 when not reaching the benchmark job frequency, 30 of microcontrollers are judged as fan electromotor 40 and are in improper driving condition.
At this moment, microcontroller 30 is used to control fan electromotor 40 and stops to drive.After fan electromotor 40 stopped driving and process certain hour, the operating frequency that microcontroller 30 will be restarted fan electromotor 40 and drive controlling fan electromotor 40 reached certain operating frequency.
When fan electromotor 40 reruns, microcontroller 30 will be measured the operating frequency of fan electromotor 40 again, and microcontroller 30 compares existing fan electromotor 40 operating frequencies and the benchmark job frequency that presets.
According to relatively judging, when microcontroller 30 judges that existing fan electromotor 40 operating frequencies reach the benchmark job frequency, judge that then fan electromotor 40 is in normal operating conditions, and control fan electromotor 40 continues to drive.
On the contrary, if when existing fan electromotor 40 operating frequencies be benchmark job frequency when following, then be judged as existing fan electromotor 40 driving conditions and be in abnormal condition.Then microcontroller 30 will be controlled in fan electromotor 40 certain hours and be in halted state.
In addition, after fan electromotor 40 stops driving and process certain hour, will restart the operating frequency that fan electromotor 40 is measured fan electromotor 40 simultaneously.As a result, when existing fan electromotor 40 operating frequencies are the benchmark job frequency that presets when above, microcontroller 30 will judge that fan electromotor 40 is in normal operating conditions, control fan electromotor 40 then and continue to drive.
On the contrary, if when existing fan electromotor 40 operating frequencies be the benchmark job frequency that presets when following, microcontroller 30 will judge that said fans motor 40 is in abnormality, control then in said fans motor 40 certain hours to be in halted state.
As mentioned above, after fan electromotor 40 drives again, the operating frequency and the benchmark job frequency of fan electromotor 40 are compared judgement, and when existing fan electromotor 40 operating frequencies did not reach the benchmark job frequency, the state that is judged as fan electromotor 40 was in improper abnormality.And when detecting the abnormality of fan electromotor 40 more than 5 times, the loose contact or the fan that then are judged as fan electromotor 40 outofkilters, support connecting portion are in restrained condition.As a result, behind addition power supply in the product, control still that fan electromotor 40 is in halted state and no longer drive.
But, the drive controlling of the fan electromotor in the prior art has following problem: in prior art, when fan electromotor is in abnormality, to again the addition power supply and restart fan electromotor, then judge again fan electromotor whether unusually, when if fan electromotor is in abnormality, then force to stop the driving of fan electromotor.Here, addition power supply and restart fan electromotor again, and then judge that the whether unusual operation of fan electromotor will need repeatedly to carry out.Therefore, need to force repeatedly to carry out the status checkout operation of fan electromotor, and then the loop that causes being used for fan motor may be damaged.
Summary of the invention
The object of the present invention is to provide can detect fan electromotor whether unusually, and suitably corresponding then fan electromotor control device and method thereof.
In order to achieve the above object, the fan electromotor control device among the present invention includes: fan electromotor is used to pass on the drive fan required drive; Microcontroller, inner setting have the benchmark job frequency of fan electromotor, detect the operating frequency of fan electromotor and compare with the benchmark job frequency, and when judging the fan electromotor outofkilter, the control fan electromotor stops to drive; Electricallyerasable ROM (EEROM) under the control of microcontroller, is used to store the bad signal of fan electromotor; Fan electromotor control device, when addition power supply again, if there is the bad signal of fan electromotor in the electricallyerasable ROM (EEROM), then microcontroller will be controlled fan electromotor and be under the state in the early stage and stop driving condition.
In addition, in order to achieve the above object, the method for controlling fan electromotor among the present invention may further comprise the steps: actuation step, fan motor; Detect step, after fan electromotor drove certain hour, whether the operating frequency that detects fan electromotor reached certain operating frequency; Determining step when the operating frequency that detects does not reach certain operating frequency, is judged the state outofkilter of fan electromotor in detecting step; Storing step, according to determining step, with the bad signal storage of fan electromotor in electricallyerasable ROM (EEROM); When the fan electromotor outofkilter, include the method for controlling fan electromotor of the 1st controlled step that stops the fan electromotor driving.
Here, in storing step of the present invention, when removing the defective mode of fan electromotor, the bad signal of the fan electromotor of storage is simultaneously deleted, and as feature.
Simultaneously, in method for controlling fan electromotor of the present invention, when addition power supply again,, then include the 2nd controlled step that the control fan electromotor drives separately if there is the bad signal of fan electromotor in the electricallyerasable ROM (EEROM).
Fan electromotor control device among the present invention and method thereof have following effect: when detecting the fan electromotor outofkilter, the bad signal data of fan electromotor is stored in separately storage device, forces to stop the driving of fan electromotor simultaneously.In addition, telegram in reply or power card are had no progeny and are resupplied under the state of power supply after having a power failure, and are stored in the bad signal data of the fan electromotor in the storage device, be used to control fan electromotor and stop to drive under the situation of having preserved.Thereby, under the situation of fan electromotor outofkilter, can prevent to be used to control PCB that fan electromotor drives and be damaged owing to for no reason driving.
Description of drawings
Fig. 1 a, 1b point out out the control structure figure that is used for fan electromotor control in the prior art.
Fig. 2 points out out the state of a control figure of the fan electromotor in the prior art.
Fig. 3 a, 3b point out out the control structure figure that is used for fan electromotor control among the present invention.
Fig. 4 points out out the action control flow chart that is used for fan electromotor control among the present invention.
The symbol description of drawing major part:
100: signal input part 110: display part
120: microcontroller 130: fan electromotor
140: electricallyerasable ROM (EEROM) EEPROM 150: power suppling part
Embodiment
Describe fan electromotor control device and method thereof among the present invention below in detail.Fig. 3 a, 3b point out out the control structure figure that is used for fan electromotor control among the present invention.
Shown in Fig. 3 a, the control structure among the present invention is by forming as the lower part: be used for the power suppling part 150 of addition power supply to product; Be used to select the operating function temperature of refrigerator, the signal input part 100 of operation species etc.; Be used for showing the display part 110 of selected operating function to the user; Be used to pass on the fan electromotor 130 of fans drive required drive; Be used to store the electricallyerasable ROM (EEROM) 140 of the abnormality respective signal of fan electromotor 130; Be used to export the microcontroller 120 that said fans motor 130 drives required control signal.
Electricallyerasable ROM (EEROM) 140 is used to store the whether bad state of fan electromotor 130.That is, microcontroller 120 receives the driving condition of fan electromotor 130, and then whether unusually the driving of judgement fan electromotor 130.When judging that fan electromotor 130 is in abnormality, microcontroller 120 is passed on the fan electromotor abnormal signal to electricallyerasable ROM (EEROM) 140.The abnormal signal that will have as a result, fan electromotor in the electricallyerasable ROM (EEROM) 140.Wherein, the data that have in the electricallyerasable ROM (EEROM) 140 are even if also can keep/store under the disconnected state of power card.
Fig. 3 b points out out the loop diagram of annexation between microcontroller in the control structure and the electricallyerasable ROM (EEROM) in detail.Shown in Fig. 3 b, the 1st port to the 4 ports of microcontroller 120 respectively with the 1st port to the 4 ports of electricallyerasable ROM (EEROM) 140.
Wherein, be connected with the 1st resistance R 1 on the connecting line of the 1st port of the 1st port of microcontroller 120 and electricallyerasable ROM (EEROM) 140; Be connected with the 2nd resistance R 2 on the connecting line of the 2nd port of microcontroller 120 and the 2nd port of electricallyerasable ROM (EEROM) 140; Be connected with the 3rd resistance R 3 on the connecting line of the 3rd port of microcontroller 120 and the 3rd port of electricallyerasable ROM (EEROM) 140; Be connected with the 4th resistance R 4 on the connecting line of the 4th port of microcontroller 120 and the 4th port of electricallyerasable ROM (EEROM) 140.
In addition, the 5th port of electricallyerasable ROM (EEROM) 140 is connected with the 1st capacitor C 1 with the 8th port.One side joint ground of the 1st capacitor C 1, opposite side is the addition power supply then.
Shown in Fig. 3 b, electricallyerasable ROM (EEROM) 140 receives the fan electromotor abnormal signal of output in the microcontroller 120 and stores the abnormal signal of fan electromotor.When power card is had no progeny addition again, microcontroller 120 will read in the fan electromotor abnormal signal that has in the electricallyerasable ROM (EEROM) 140.Its result, fan electromotor 130 operating states that microcontroller 120 will detect before the outage are in abnormality, thereby prevent that fan electromotor 130 from continuing to drive.
As mentioned above, in the method for controlling fan electromotor of the present invention, when fan electromotor 130 takes place will control fan electromotor 130 and stop to drive when unusual, thereby can prevent that the control PCB that power supply is used to control fan electromotor 130 drivings again during addition from being damaged.
Fig. 4 points out out the action control flow chart that is used for fan electromotor control among the present invention.
Power supply is added to refrigerator fuselage the 200th step, and microcontroller 120 detects data the 210th step that has in the electricallyerasable ROM (EEROM) 140.
Subsequently, judge whether in the 210th step microcontroller 120 has bad signal the 220th step of fan electromotor in the electricallyerasable ROM (EEROM) 140 detected data.
In the 220th step, when in electricallyerasable ROM (EEROM) 140 detected data, not detecting the abnormal signal of fan electromotor, then control fan electromotor 130 and continue to drive.
At first, carry out the heat exchange operation of refrigerator cool cycles for fan motor 130.When carrying out cool cycles and carrying out heat exchange operation, the cold air of cooling will supply in the refrigerator.At this moment, fan begins to drive so that cool-air feed in refrigerator, is required power fan motor 130 the 230th step of reception and registration fans drive simultaneously.Fan electromotor 130 drives by the operating frequency that presets, and operating frequency then is set in the microcontroller 120.
As mentioned above, when fan electromotor 130 drives, microcontroller 120 will detect the state of fan electromotor 130.For this reason, when fan electromotor 130 drives, the activation point corresponding voltage value of fan electromotor 130 will be communicated in the microcontroller 120.Thus, microcontroller 120 will detect the activation point corresponding voltage value of fan electromotor 130, and then can detect the driving condition of fan electromotor 130.That is, be set with in the microcontroller 120 fan electromotor 130 under perfect condition magnitude of voltage and the magnitude of voltage under the abnormality.When fan electromotor 130 drives, microcontroller 120 will detect the corresponding voltage value that is received, and then can detect the state of fan electromotor 130.
When fan electromotor 130 is in normal condition, will carries out the 200th step to the 230 steps repeatedly and be used for fan motor 130.
But during fan electromotor 130 drove, if when the value that microcontroller 120 receives is judged as the magnitude of voltage of fan electromotor 130 when being in abnormality, microcontroller 120 was communicated to detected abnormal signal in the electricallyerasable ROM (EEROM) 140.Simultaneously, electricallyerasable ROM (EEROM) 140 receives the abnormal signal of fan electromotor 130, and the abnormal signal of storage fan electromotor 130.
Thus, in the 210th step, microcontroller 120 detects the state that is stored in the fan electromotor abnormal signal in the electricallyerasable ROM (EEROM) 140 and grasps fan electromotor simultaneously.Judged result at 120 pairs of fan electromotor 130 states of microcontroller, the 220th step when if microcontroller 120 detects fan electromotor 130 outofkilters, the state of fan electromotor 130 is controlled to be bad demonstration the 240th step by display part 110, and while microcontroller 120 will be controlled the driving of fan electromotor 130 and stop action the 250th step of fan electromotor 130 immediately.Subsequently, even if addition again behind the deenergization, the bad signal of fan electromotor that is stored in the electricallyerasable ROM (EEROM) 140 can be not deleted yet, thereby can stop the driving of fan electromotor 130 immediately.
In addition, when the user finds that fan electromotor 130 is in unusual driving condition, can carry out the maintenance service of fan electromotor then.For this reason, the user can import the particular key separately that presets or by manual operation, with the whether bad record deletion of fan electromotor 130.That is, the whether bad erasure signal of fan electromotor of user input will be communicated in the microcontroller 120, and above-mentioned then microcontroller 120 is stored in fan electromotor record of bad behavior in the electricallyerasable ROM (EEROM) 140 with deletion.After its result, user find the whether bad of fan electromotor 130 and take appropriate measures, when addition power supply again and again during fan motor 130, because the record of bad behavior of fan electromotor 130 deleted fully, so fan electromotor 130 driven once more.
As mentioned above, whether be provided with defective mode that separately storage device is used to store fan electromotor among the present invention, thereby when the driving of fan electromotor is in abnormality, can stores the defective mode of fan electromotor and force to stop the driving of fan electromotor.In addition, behind addition power supply again, also can detect the bad signal of the fan electromotor that is stored in the storage device, so the control fan electromotor be in stop driving condition and with this as basic fundamental thought.
Right among the present invention is not confined to aforesaid example, but is decided by the record in the request scope.In the interest field of putting down in writing in not exceeding request scope of the present invention, the operator of relevant industries can carry out various deformation and improvement to it.
Claims (3)
1, a kind of fan electromotor control device is characterized in that including: fan electromotor is used to pass on the drive fan required drive; Microcontroller, inner setting have the benchmark job frequency of fan electromotor, detect the operating frequency of fan electromotor and compare with the benchmark job frequency, and when judging the fan electromotor outofkilter, the control fan electromotor stops to drive; Electricallyerasable ROM (EEROM) under the control of microcontroller, is used to store the bad signal of fan electromotor; Fan electromotor control device, when addition power supply again, if there is the bad signal of fan electromotor in the electricallyerasable ROM (EEROM), then microcontroller will be controlled fan electromotor and be under the state in the early stage and stop driving condition.
2, a kind of method for controlling fan electromotor is characterized in that may further comprise the steps: actuation step, fan motor; Detect step, after fan electromotor drove certain hour, whether the operating frequency that detects fan electromotor reached certain operating frequency; Determining step when the operating frequency that detects does not reach certain operating frequency, is judged the state outofkilter of fan electromotor in detecting step; Storing step, according to determining step, with the bad signal storage of fan electromotor in electricallyerasable ROM (EEROM); When the fan electromotor outofkilter, include the 1st controlled step that stops the fan electromotor driving; When addition power supply again,, then include the 2nd controlled step that the control fan electromotor drives separately if there is the bad signal of fan electromotor in the electricallyerasable ROM (EEROM).
3, according to the described method for controlling fan electromotor of claim 2, it is characterized in that: in storing step, when removing the defective mode of fan electromotor, the bad signal of the fan electromotor of storage is simultaneously deleted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100199435A CN100541959C (en) | 2004-07-12 | 2004-07-12 | Fan electromotor control device and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100199435A CN100541959C (en) | 2004-07-12 | 2004-07-12 | Fan electromotor control device and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1722559A CN1722559A (en) | 2006-01-18 |
| CN100541959C true CN100541959C (en) | 2009-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100199435A Expired - Fee Related CN100541959C (en) | 2004-07-12 | 2004-07-12 | Fan electromotor control device and method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN100541959C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269159A (en) * | 2010-06-07 | 2011-12-07 | 宇达电脑（上海）有限公司 | Health detection method and device for fan |
| US8665576B2 (en) | 2012-07-27 | 2014-03-04 | Hewlett-Packard Development Company, L.P. | Fuse circuits |
| CN102853625A (en) * | 2012-09-21 | 2013-01-02 | 合肥美菱股份有限公司 | Starting method of direct current brushless motor of air-cooled refrigerator |
| CN104155607B (en) * | 2014-08-07 | 2017-03-29 | 合肥美的电冰箱有限公司 | The detection circuit of refrigerator fan motor stall, refrigerator and its control method |
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2004
- 2004-07-12 CN CNB2004100199435A patent/CN100541959C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1722559A (en) | 2006-01-18 |
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| C14 | Grant of patent or utility model | ||
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| ASS | Succession or assignment of patent right |
Owner name: TAIZHOU LG ELECTRONICS FREEZER CO., LTD. Free format text: FORMER OWNER: LG ELECTRONICS ( TIANJIN ) ELECTRICAL APPLIANCES CO., LTD. Effective date: 20091225 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091225 Address after: Yingbin Road, Taizhou Economic Development Zone, No. 2 Patentee after: Taizhou LG Electronics Refrigerator Co., Ltd. Address before: Beichen District, Tianjin Xing Lake Road Patentee before: LG Electronic (Tianjin) Electrical Appliance Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20140712 |
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| EXPY | Termination of patent right or utility model |