CN103615785A - Method and device for judging air conditioner filter screen cleanliness with duty ratio of direct current motor - Google Patents
Method and device for judging air conditioner filter screen cleanliness with duty ratio of direct current motor Download PDFInfo
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- CN103615785A CN103615785A CN201310606791.8A CN201310606791A CN103615785A CN 103615785 A CN103615785 A CN 103615785A CN 201310606791 A CN201310606791 A CN 201310606791A CN 103615785 A CN103615785 A CN 103615785A
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Abstract
The invention relates to air conditioners, in particular to a device for judging air conditioner filter screen cleanliness with the duty ratio of a direct current motor. The device aims to solve the problems that in the prior art, the cost of judging the air conditioner filter screen cleanliness is high, and effective judgment cannot be achieved. The device for judging the air conditioner filter screen cleanliness with the duty ratio of the direct current motor comprises a direct current motor rotating speed collecting module and a central processing module, and the direct current motor rotating speed collecting module is used for collecting the rotating speed of the direct current motor in the work process and sending the rotating speed to the central processing module. The central processing module calculates the real-time duty ratio value of the direct current motor in the work process according to the rotating speed sent by the direct current motor rotating speed collecting module and compares the difference value of the duty ratio value and a preset standard duty ratio and the high limit value of a preset duty ratio difference value, and whether an air conditioner filter screen is clean or not is judged according to a result. The central processing module is connected with the direct current motor rotating speed collecting module. The invention further provides a method for judging the air conditioner filter screen cleanliness with the duty ratio of the direct current motor. The method and device are suitable for the air conditioners.
Description
Technical field
The present invention relates to air-conditioning, particularly indoor fan adopts the air-conditioning of direct current generator.
Background technology
After air-conditioning filter net is dirty, directly affect the performance of air-conditioner.Judging in the method for air-conditioning filter net cleanliness factor both at home and abroad at present, generally adopt the variation of blower fan electric current to judge that whether screen pack is dirty, the method need to increase current inductor, and cost is high, cannot effectively implement.
Summary of the invention
The object of the invention is to judge that in order to solve prior art air-conditioning filter net cleanliness factor cost is high, cannot effectively judge the problem of air-conditioning filter net cleanliness factor.
For achieving the above object, the invention provides a kind of device that utilizes direct current generator dutycycle judgement air-conditioning filter net cleanliness factor, comprising:
DC motor speed acquisition module, the rotating speed while working for gathering direct current generator also passes to central processing module;
Central processing module, the rotating speed transmitting according to DC motor speed acquisition module calculates the real-time dutycycle numerical value of direct current generator work, the difference of this dutycycle numerical value and the standard dutycycle that sets in advance and the ceiling value of default duty cycle difference are compared, according to result, judge the whether cleaning of air-conditioning filter net;
Described central processing module is connected with described DC motor speed acquisition module.
Further, also comprise display module, for the judged result of output display central processing module, whether air-conditioning filter net is clean, and described display module is connected with central processing module.
Particularly, described display module is LED lamp or digital display tube or display.
Particularly, described central processing module is micro-control unit.
The present invention also provides a kind of method of utilizing direct current generator dutycycle judgement air-conditioning filter net cleanliness factor, comprises the steps:
A., direct current generator corresponding standard duty ceiling value of duty cycle difference when during normal operation under different rotating speeds is set in central processing module;
B. DC motor speed acquisition module gathers the real-time rotate speed of direct current generator to central processing module;
C. central processing module calculates direct current generator dutycycle according to the real-time rotate speed of direct current generator, calculate the difference of this dutycycle and default standard dutycycle, and the ceiling value of this difference and default duty cycle difference is compared, according to result, judge that whether air-conditioning filter net is clean.
Particularly, in step c, if the difference of the direct current generator dutycycle calculating and default direct current generator dutycycle is greater than the ceiling value of default duty cycle difference, show that air-conditioning filter net is unholiness.
Further, also comprise the steps: whether clean result outputs to display module to central processing module shows by the air-conditioning filter net of judgement after step c.
The invention has the beneficial effects as follows: a kind of method and apparatus is provided, can passes through the variation of direct current generator dutycycle, effectively judge the cleanliness factor of air-conditioning filter net, saved judgement cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the device that utilizes direct current generator dutycycle judgement air-conditioning filter net cleanliness factor of embodiment.
The specific embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is further described.
The device that utilizes direct current generator dutycycle judgement air-conditioning filter net cleanliness factor of the present invention, comprises DC motor speed acquisition module and central processing module.Rotating speed when DC motor speed acquisition module is worked for gathering direct current generator also passes to central processing module; The rotating speed that central processing module transmits according to DC motor speed acquisition module calculates the real-time dutycycle numerical value of direct current generator work, the difference of this dutycycle numerical value and the standard dutycycle that sets in advance and the ceiling value of default duty cycle difference are compared, according to result, judge the whether cleaning of air-conditioning filter net; Central processing module is connected with DC MOTOR CONTROL module and DC motor speed acquisition module respectively.
The method of utilizing direct current generator dutycycle judgement air-conditioning filter net cleanliness factor of the present invention, comprise the steps: the first step, direct current generator corresponding standard duty ceiling value of duty cycle difference when during normal operation under different rotating speeds is set in central processing module; Second step, DC motor speed acquisition module gathers the real-time rotate speed of direct current generator to central processing module; Is last, central processing module calculates direct current generator dutycycle according to the real-time rotate speed of direct current generator, calculate the difference of this dutycycle and default standard dutycycle, and the ceiling value of this difference and default duty cycle difference is compared, according to result, judge that whether air-conditioning filter net is clean.
Embodiment
In conjunction with Fig. 1, describe the workflow of utilizing the device of direct current generator dutycycle judgement air-conditioning filter net cleanliness factor of the present invention in detail.
When cleanliness of filter screen changes, the load of direct current generator just changes, the variation ratio that cleanliness factor changes ratio and dutycycle has functional relation, if the difference of two dutycycles surpasses a certain proportion of time, illustrate that significant change has occurred in direct current generator load, cleanliness of filter screen is very poor.
First user arranges direct current generator corresponding standard duty ceiling value of duty cycle difference when during normal operation under different rotating speeds in central processing module.After air-conditioning is opened, user can arrange the rotating speed of direct current generator as required, DC motor speed acquisition module gathers the real-time rotate speed of direct current generator to central processing module, central processing module calculates the dutycycle of direct current generator according to the rotating speed obtaining, the ceiling value of the difference of the difference of this dutycycle and default standard dutycycle and default dutycycle is compared, if difference is greater than the ceiling value of duty cycle difference, the cleanliness factor that air-conditioning filter net is described is very poor, now, central processing module sends to display module by the poor object information of air-conditioning filter net cleanliness factor and shows.
Claims (7)
1. the device that utilizes direct current generator dutycycle judgement air-conditioning filter net cleanliness factor, is characterized in that, comprising:
DC motor speed acquisition module, the rotating speed while working for gathering direct current generator also sends to central processing module;
Central processing module, the rotating speed sending according to DC motor speed acquisition module calculates the real-time dutycycle numerical value of direct current generator work, the difference of this dutycycle numerical value and the standard dutycycle that sets in advance and the ceiling value of default duty cycle difference are compared, according to result, judge whether cleaning of air-conditioning filter net;
Described central processing module is connected with described DC motor speed acquisition module.
2. the device that utilizes direct current generator dutycycle judgement air-conditioning filter net cleanliness factor as claimed in claim 1, it is characterized in that, also comprise display module, for the judged result of output display central processing module, be whether air-conditioning filter net is clean, described display module is connected with central processing module.
3. the device that utilizes direct current generator dutycycle judgement air-conditioning filter net cleanliness factor as claimed in claim 2, is characterized in that, described display module is LED lamp or digital display tube or display.
4. the device that utilizes direct current generator dutycycle judgement air-conditioning filter net cleanliness factor as described in claim 1 or 2 or 3, is characterized in that, described central processing module is micro-control unit.
5. the method for utilizing direct current generator dutycycle judgement air-conditioning filter net cleanliness factor, is characterized in that, comprises the steps:
A., direct current generator corresponding standard duty ceiling value of duty cycle difference when during normal operation under different rotating speeds is set in central processing module;
B. DC motor speed acquisition module gathers the real-time rotate speed of direct current generator to central processing module;
C. central processing module calculates direct current generator dutycycle according to the real-time rotate speed of direct current generator, calculate the difference of this dutycycle and default standard dutycycle, and the ceiling value of this difference and default duty cycle difference is compared, according to result, judge that whether air-conditioning filter net is clean.
6. the method for utilizing direct current generator dutycycle judgement air-conditioning filter net cleanliness factor as claimed in claim 5, it is characterized in that, in step c, if the difference of the direct current generator dutycycle calculating and default direct current generator dutycycle is greater than the ceiling value of default duty cycle difference, show that air-conditioning filter net is unholiness.
7. the direct current generator dutycycle of utilizing as described in claim 5 or 6 judges the method for air-conditioning filter net cleanliness factor, it is characterized in that, also comprise the steps: whether clean result outputs to display module to central processing module shows by the air-conditioning filter net of judgement after step c.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310606791.8A CN103615785B (en) | 2013-11-25 | 2013-11-25 | Direct current generator dutycycle is utilized to judge method and the device of air-conditioning filter net cleanliness factor |
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| CN201310606791.8A CN103615785B (en) | 2013-11-25 | 2013-11-25 | Direct current generator dutycycle is utilized to judge method and the device of air-conditioning filter net cleanliness factor |
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| CN103615785A true CN103615785A (en) | 2014-03-05 |
| CN103615785B CN103615785B (en) | 2015-11-04 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833050A (en) * | 2015-04-28 | 2015-08-12 | 广东美的制冷设备有限公司 | Air regulator as well as detection device and detection method for dust deposition degree of filter screen of air conditioner regulator |
| CN104990201A (en) * | 2015-05-29 | 2015-10-21 | 广东美的制冷设备有限公司 | Method and device for detecting filth blockage of air conditioner |
| WO2016011617A1 (en) * | 2014-07-23 | 2016-01-28 | 中山大洋电机股份有限公司 | Filter screen clogging detection method for air supply device and air supply device using same |
| CN105352027A (en) * | 2014-08-21 | 2016-02-24 | 广东美的制冷设备有限公司 | Air conditioner indoor unit and filth blockage control method thereof |
| CN105841295A (en) * | 2016-03-28 | 2016-08-10 | 海信（山东）空调有限公司 | Filter screen service life detecting method and device |
| CN108079701A (en) * | 2016-11-21 | 2018-05-29 | 苏州三星电子有限公司 | A kind of detection method and system of filter screen dust accumulation degree |
| CN108286772A (en) * | 2017-12-21 | 2018-07-17 | 珠海格力电器股份有限公司 | Air conditioning control method, device and air-conditioning |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105841295A (en) * | 2016-03-28 | 2016-08-10 | 海信（山东）空调有限公司 | Filter screen service life detecting method and device |
| CN108079701A (en) * | 2016-11-21 | 2018-05-29 | 苏州三星电子有限公司 | A kind of detection method and system of filter screen dust accumulation degree |
| CN108079701B (en) * | 2016-11-21 | 2020-11-06 | 苏州三星电子有限公司 | Method and system for detecting dust deposition degree of filter screen |
| CN108286772A (en) * | 2017-12-21 | 2018-07-17 | 珠海格力电器股份有限公司 | Air conditioning control method, device and air-conditioning |
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| CN103615785B (en) | 2015-11-04 |
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