CN102928347A - Detection method for dust on filter screen - Google Patents
Detection method for dust on filter screen Download PDFInfo
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- CN102928347A CN102928347A CN2012104112115A CN201210411211A CN102928347A CN 102928347 A CN102928347 A CN 102928347A CN 2012104112115 A CN2012104112115 A CN 2012104112115A CN 201210411211 A CN201210411211 A CN 201210411211A CN 102928347 A CN102928347 A CN 102928347A
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Abstract
The invention provides a detection method for dust on a filter screen. The detection method comprises the following steps of: regularly emitting reflected light or direct light or sound waves to the filter screen; detecting the intensity values of the reflected light or the sound waves reflected by the filter screen, or detecting the intensity values of the direct light or the sound waves which pass through the filter screen; judging whether the detected intensity values of the reflected light or the direct light or the sound waves exceed a preset value; and if so, indicating that the filter screen is blocked, and immediately sending a warning signal. The detection method is applied without the influence of wind speed, wind pressure and leakproofness and is widely applicable. According to the detection method, various ventilation environments can be supported, and the problem that the ordinary filter screen dust sensor cannot detect the dust degree of the filter screen under the conditions of low wind speed, lower wind pressure and lower leakproofness can be effectively solved.
Description
Technical field
The present invention relates to a kind of filter screen dust detection field, particularly relate to a kind of detection method that under the bad condition of low wind speed, low blast, leakproofness, effectively detects the problem filter screen dust of filter screen dust degree that solves.
Background technology
In order to prevent the dust access arrangement, keep simultaneously Air Flow in the equipment, filter screen be widely used in equipment on the air port.When the dust of filter screen reaches a certain amount of, need in time to change, otherwise will block because of the air channel, cause the heat interchange failure, cause the interior temperature of equipment sharply to rise, cause adverse consequences.
Present filter screen dust sensor mainly is two classes, one class is by the detection of blast on the filter screen being judged filter screen dust degree, another kind of is by the detection of wind speed on the filter screen being judged filter screen dust degree, this two class is only suitable for large-scale airduct and uses, and environment for use needs good leak tightness, otherwise can not effectively use.Therefore, then be necessary to propose a kind of detection method of filter screen dust, to solve the problem that effectively detects filter screen dust degree under the bad condition of low wind speed, low blast, leakproofness, real be present problem anxious to be resolved.
Summary of the invention
The shortcoming of prior art in view of the above the object of the present invention is to provide a kind of detection method of filter screen dust, to solve the problem that effectively detects filter screen dust degree under the bad condition of low wind speed, low blast, leakproofness.
Reach for achieving the above object other relevant purposes, the invention provides a kind of detection method of filter screen dust, it comprises: 1) regularly send reflected light or sound wave to filter screen; 2) detect reflected light that filter screen is reflected back or the intensity level of sound wave, and judge whether the reflected light that detects or the intensity level of sound wave surpass a preset value, if not, then repeat this step and carry out and detect action, if then proceed to step 3); 3) send an alarm signal.
In addition, above-mentioned steps 2) in the catoptrical intensity level that is reflected back of filter screen detect by the reflection type optical electric explorer and obtain.The intensity level of the sound wave that filter screen is reflected back above-mentioned steps 2) detects by acoustic detector and obtains.
Preferably, above-mentioned steps 3) in further comprise: the reflected light that detects of record or the intensity level of sound wave.This reflected light can for example be infrared light.
For realizing above-mentioned identical purpose, the present invention also provides a kind of detection method of filter screen dust, and it comprises: 4) regularly send direct light or sound wave to filter screen; 5) detect the direct light pass behind the filter screen or the intensity level of sound wave, and judge whether the direct light that detects or the intensity level of sound wave surpass a preset value, if not, then repeat this step and carry out and detect action, if then proceed to step 6); 6) send an alarm signal.
In addition, above-mentioned steps 5) in pass the direct light behind the filter screen intensity level detect by the direct light type photodetector and obtain.Above-mentioned steps 5) intensity level that passes the sound wave behind the filter screen in detects by acoustic detector and obtains.
Preferably, above-mentioned steps 6) in further comprise: the direct light that detects of record or the intensity level of sound wave.
As mentioned above, the detection method of filter screen dust of the present invention mainly is to utilize the reflection type optical electric explorer to the different principle of different densities dust reflected value on the filter screen, regularly send reflected light or direct light or sound wave to filter screen, and use the reflection type optical electric explorer to detect to slip through the net the reflected light that is reflected back or the intensity level of sound wave, perhaps detect the direct light pass behind the filter screen or the intensity level of sound wave, then, whether the reflected light that judgement detects or the intensity level of direct light or sound wave surpass a preset value, if, at once send an alarm signal, solved at low wind speed, low blast, the plain gauze dust sensor can't detect the problem of filter screen dust degree under the bad condition of leakproofness, and realize that cost is low, easy for installation, applicability is extensive, has good economic benefit.
Description of drawings
Fig. 1 is the operating process synoptic diagram of the first embodiment that is shown as the detection method of filter screen dust of the present invention.
Fig. 2 is the operating process synoptic diagram of the second embodiment that is shown as the detection method of filter screen dust of the present invention.
The element numbers explanation
S10 ~ S40, S10 ' ~ S40 ' step
Embodiment
Below by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this instructions.The present invention can also be implemented or be used by other different embodiment, and the every details in this instructions also can be based on different viewpoints and application, carries out various modifications or change under the spirit of the present invention not deviating from.
The first embodiment
Seeing also Fig. 1, is the operational flowchart of the first embodiment that shows the detection method of filter screen dust of the present invention, below namely is example take reflected light as infrared light, and the operation steps of the detection method of filter screen dust of the present invention is elaborated.
At first execution in step S10 regularly sends infrared light to filter screen.Then, carry out step S20.
In step S20, the intensity level of the infrared light that the detection filter screen is reflected back.Then, carry out step S30.Particularly, the intensity level of the infrared light that is reflected back of this filter screen detects by the reflection type optical electric explorer and obtains
In step S30, judge whether the intensity level of the infrared light that detects surpasses a preset value, if, illustrate that then filter screen blocks, and proceed to step S40, if not, then be back to step S20, continue to carry out the detection action.
In step S40, send an alarm signal.Preferably, can also record in this stage the intensity level of the infrared light that detects, so that the usefulness of analysis is checked in follow-up conduct.
What need be explained is herein, adopt infrared light to carry out as reflected light in the present embodiment and detect operation, but not as limit, also can adopt the reflected light outside the infrared light, perhaps, the employing sound wave substitutes reflected light and carries out the detection operation, and the intensity level of sound wave obtains by the acoustic detector detection.
The second embodiment
See also Fig. 2, it is the operating process synoptic diagram of the second embodiment of detection method that shows the present invention's filter screen dust, wherein, the assembly identical or approximate with the detection method (as shown in Figure 1) of the filter screen dust of previous embodiment is to represent with identical or approximate element numbers, and omit detailed narration, so that the explanation of this case is clearer understandable.
The maximum difference of the detection method of the detection method of the filter screen dust of the second embodiment and the filter screen dust of the first embodiment is that the detection method of the filter screen dust of the first embodiment is to adopt infrared light to carry out as reflected light to detect operation; And the detection method (as shown in Figure 2) of the filter screen dust of the second embodiment is to adopt direct light to carry out to detect operation, with respect to the first embodiment, except the light source difference that sends, and because light source is different, so that detection mode and check point are also different, among the step S20 of the first embodiment, the detection of the intensity level of the infrared light that filter screen is reflected back is to detect at the homonymy that sends light source (infrared light), and obtain the intensity level of infrared light by the reflection type optical electric explorer, and the detection of passing the intensity level of the direct light behind the filter screen among the step S20 ' of the second embodiment is to detect at the opposite side that sends light source (direct light), and obtains the intensity level of direct light by the direct light type photodetector.
What need be explained is to adopt direct light to carry out detection in the present embodiment and operate, but not as limit, also can adopt the alternative direct light of sound wave to carry out to detect and operate, and the intensity level of sound wave obtains by the acoustic detector detection herein.
In sum, the detection method of filter screen dust of the present invention mainly is regularly to send reflected light or direct light or sound wave to filter screen, and detect the slip through the net reflected light that is reflected back or the intensity level of sound wave, perhaps detect the direct light pass behind the filter screen or the intensity level of sound wave, then, whether the reflected light that judgement detects or the intensity level of direct light or sound wave surpass a preset value, if, show that then filter screen blocks, at once send an alarm signal, use the present invention, be not subjected to the wind speed height, blast height and the bad impact of environment for use good leak tightness, widely applicable, can support various ventilated environments, can effectively solve at low wind speed, low blast, the plain gauze dust sensor can't detect the problem of filter screen dust degree under the bad condition of leakproofness, and reflection type optical electric explorer used in the present invention is the low-cost general-purpose device that is usually used in obstacle detection, and volume is little, cost is low, it is also convenient to install, and has good economic benefit.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not is used for restriction the present invention.Any person skilled in the art scholar all can be under spirit of the present invention and category, and above-described embodiment is modified or changed.Therefore, have in the technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of finishing under disclosed spirit and the technological thought, must be contained by claim of the present invention.
Claims (9)
1. the detection method of a filter screen dust is characterized in that, the detection method of described filter screen dust comprises:
1) regularly sends reflected light or sound wave to filter screen;
2) detect reflected light that filter screen is reflected back or the intensity level of sound wave, and judge whether the reflected light that detects or the intensity level of sound wave surpass a preset value, if not, then repeat this step and carry out and detect action, if then proceed to step 3);
3) send an alarm signal.
2. the detection method of filter screen dust according to claim 1 is characterized in that: the catoptrical intensity level that filter screen is reflected back above-mentioned steps 2) detects by the reflection type optical electric explorer and obtains.
3. the detection method of filter screen dust according to claim 1 is characterized in that: the intensity level of the sound wave that filter screen is reflected back above-mentioned steps 2) detects by acoustic detector and obtains.
4. the detection method of filter screen dust according to claim 1 is characterized in that: further comprise above-mentioned steps 3): the reflected light that record detects or the intensity level of sound wave.
5. according to claim 1, the detection method of 2 or 4 described filter screen dusts, it is characterized in that: described reflected light is infrared light.
6. the detection method of a filter screen dust is characterized in that, the detection method of described filter screen dust comprises:
4) regularly send direct light or sound wave to filter screen;
5) detect the direct light pass behind the filter screen or the intensity level of sound wave, and judge whether the direct light that detects or the intensity level of sound wave surpass a preset value, if not, then repeat this step and carry out and detect action, if then proceed to step 6);
6) send an alarm signal.
7. the detection method of filter screen dust according to claim 6 is characterized in that: the intensity level that passes the direct light behind the filter screen above-mentioned steps 5) detects by the direct light type photodetector and obtains.
8. the detection method of filter screen dust according to claim 6 is characterized in that: the intensity level that passes the sound wave behind the filter screen above-mentioned steps 5) detects by acoustic detector and obtains.
9. the detection method of filter screen dust according to claim 6 is characterized in that: further comprise above-mentioned steps 6): the direct light that record detects or the intensity level of sound wave.
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015176439A1 (en) * | 2014-05-21 | 2015-11-26 | 中兴通讯股份有限公司 | Method, system and apparatus for detecting blockage of dust filter |
| CN105223113A (en) * | 2015-09-28 | 2016-01-06 | 国家电网公司 | A kind of electrical control dish cabinet dust detection |
| CN105572003A (en) * | 2014-11-10 | 2016-05-11 | 江苏美的清洁电器股份有限公司 | Control method of dust concentration detection component for dust collector |
| CN105651673A (en) * | 2015-12-31 | 2016-06-08 | 北京怡和嘉业医疗科技有限公司 | Efficiency detecting device and efficiency detecting method of filter core, and respirator |
| CN106274384A (en) * | 2016-08-15 | 2017-01-04 | 深圳市永兴元科技有限公司 | The reminding method of screen replacing, air conditioning for automobiles and Cloud Server |
| CN106442252A (en) * | 2016-08-31 | 2017-02-22 | 广东美的制冷设备有限公司 | Method and system for detecting filth blockage in dust filtration mesh for filtering ambient light and household appliances |
| CN106645196A (en) * | 2016-12-15 | 2017-05-10 | 广东威创视讯科技股份有限公司 | Dust detector of projection lens and dust remover |
| CN107219172A (en) * | 2017-05-17 | 2017-09-29 | 深圳市美好创亿医疗科技有限公司 | The detection method of gas filter material strainability |
| CN107478612A (en) * | 2017-09-20 | 2017-12-15 | 安费诺(常州)连接系统有限公司 | For detecting the sensor and method of filter laying dust |
| CN107478616A (en) * | 2017-07-18 | 2017-12-15 | 广东美的制冷设备有限公司 | Screen pack laying dust detection method, household electrical appliances and computer-readable recording medium |
| CN108169094A (en) * | 2017-12-04 | 2018-06-15 | 广东美的制冷设备有限公司 | Strainer mesh cleanliness detection method, sensor and airhandling equipment |
| CN108317663A (en) * | 2017-12-21 | 2018-07-24 | 珠海格力电器股份有限公司 | Reminding method, system and the device of return air strainer situation |
| CN108333149A (en) * | 2018-02-08 | 2018-07-27 | 芜湖美智空调设备有限公司 | Strainer mesh cleanliness detection method and strainer mesh cleanliness sensor, airhandling equipment |
| CN108733535A (en) * | 2017-04-25 | 2018-11-02 | 北京小米移动软件有限公司 | Clean method and device, the electronic equipment of electronic equipment Air Filter |
| CN109512355A (en) * | 2019-01-02 | 2019-03-26 | 珠海格力电器股份有限公司 | Dish-washing machine |
| CN109717506A (en) * | 2017-10-27 | 2019-05-07 | 北京新长征天高智机科技有限公司 | A kind of control system and method improving Winnowing box stalk label rejecting rate |
| CN110438723A (en) * | 2018-05-03 | 2019-11-12 | 无锡小天鹅电器有限公司 | Cylinder assembly, washing-drying integral machine, dryer and drying control method |
| CN110892204A (en) * | 2017-07-06 | 2020-03-17 | 近藤工业株式会社 | Filter clogging measuring device for air conditioning equipment and air conditioning equipment |
| CN112179823A (en) * | 2020-08-31 | 2021-01-05 | 珠海格力电器股份有限公司 | Filth blockage detection method, device, equipment and storage medium |
| CN112316625A (en) * | 2020-10-23 | 2021-02-05 | 移康智能科技（上海）股份有限公司 | Sound wave dust removal and drainage system with learning capacity |
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| CN105572003A (en) * | 2014-11-10 | 2016-05-11 | 江苏美的清洁电器股份有限公司 | Control method of dust concentration detection component for dust collector |
| CN105572003B (en) * | 2014-11-10 | 2018-10-19 | 江苏美的清洁电器股份有限公司 | The control method of dust concentration detection components for dust catcher |
| CN105223113A (en) * | 2015-09-28 | 2016-01-06 | 国家电网公司 | A kind of electrical control dish cabinet dust detection |
| CN105651673A (en) * | 2015-12-31 | 2016-06-08 | 北京怡和嘉业医疗科技有限公司 | Efficiency detecting device and efficiency detecting method of filter core, and respirator |
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| CN106442252A (en) * | 2016-08-31 | 2017-02-22 | 广东美的制冷设备有限公司 | Method and system for detecting filth blockage in dust filtration mesh for filtering ambient light and household appliances |
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| CN107219172A (en) * | 2017-05-17 | 2017-09-29 | 深圳市美好创亿医疗科技有限公司 | The detection method of gas filter material strainability |
| CN110892204A (en) * | 2017-07-06 | 2020-03-17 | 近藤工业株式会社 | Filter clogging measuring device for air conditioning equipment and air conditioning equipment |
| CN110892204B (en) * | 2017-07-06 | 2022-04-26 | 剑桥过滤器有限公司 | Filter clogging measuring device for air conditioning equipment and air conditioning equipment |
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| CN107478612A (en) * | 2017-09-20 | 2017-12-15 | 安费诺(常州)连接系统有限公司 | For detecting the sensor and method of filter laying dust |
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| CN108169094A (en) * | 2017-12-04 | 2018-06-15 | 广东美的制冷设备有限公司 | Strainer mesh cleanliness detection method, sensor and airhandling equipment |
| CN108169094B (en) * | 2017-12-04 | 2020-08-04 | 广东美的制冷设备有限公司 | Filter screen cleanliness detection method, sensor and air treatment equipment |
| CN108317663A (en) * | 2017-12-21 | 2018-07-24 | 珠海格力电器股份有限公司 | Reminding method, system and the device of return air strainer situation |
| CN108333149A (en) * | 2018-02-08 | 2018-07-27 | 芜湖美智空调设备有限公司 | Strainer mesh cleanliness detection method and strainer mesh cleanliness sensor, airhandling equipment |
| WO2019153665A1 (en) * | 2018-02-08 | 2019-08-15 | 芜湖美智空调设备有限公司 | Filter screen cleanliness detection method, filter screen cleanliness sensor and air treatment apparatus |
| CN110438723A (en) * | 2018-05-03 | 2019-11-12 | 无锡小天鹅电器有限公司 | Cylinder assembly, washing-drying integral machine, dryer and drying control method |
| CN110438723B (en) * | 2018-05-03 | 2022-03-25 | 无锡小天鹅电器有限公司 | Barrel assembly, washing and drying integrated machine, clothes dryer and drying control method |
| CN109512355A (en) * | 2019-01-02 | 2019-03-26 | 珠海格力电器股份有限公司 | Dish-washing machine |
| CN112179823A (en) * | 2020-08-31 | 2021-01-05 | 珠海格力电器股份有限公司 | Filth blockage detection method, device, equipment and storage medium |
| CN112316625A (en) * | 2020-10-23 | 2021-02-05 | 移康智能科技（上海）股份有限公司 | Sound wave dust removal and drainage system with learning capacity |
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Application publication date: 20130213 |