CN101876669A - Device and runner blockage detection method - Google Patents
Device and runner blockage detection method Download PDFInfo
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- CN101876669A CN101876669A CN2009101357886A CN200910135788A CN101876669A CN 101876669 A CN101876669 A CN 101876669A CN 2009101357886 A CN2009101357886 A CN 2009101357886A CN 200910135788 A CN200910135788 A CN 200910135788A CN 101876669 A CN101876669 A CN 101876669A
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Abstract
The invention discloses a device which comprises a runner and a runner blockage detection system. The runner blockage detection system is arranged in the device and comprises a fan and a detection circuit, wherein the fan is arranged in the runner; the fan is driven by a specified voltage to rotate; and the detection circuit is electrically connected with the fan and detects a current value of the fan to judge the blockage degree of the runner.
Description
Technical field
The present invention is relevant for a kind of device and method, particularly relevant for a kind of runner blockage detection method and use the device of this runner blockage detection method.
Background technology
When the consumer normally uses electronic installation such as computing machine, can't do dust removal process to the box house of electronic installation termly according to environment for use.But dust is to use a big killer in life-span again for electronic product.In view of the situation, businessman can advise all that with medium the consumer does regular dedusting to the electronic product in using.Yet, just can start to do when expecting by the consumer for when setting about cleaning, remaining.
When deisgn product, specially add dust filter sometimes, as the electrostatic adhesion filter screen, to reduce the invasion of dust at the air inlet of electronic installation.But filter screen cleaning ground is too frequent, reduces dust degree of adhering to easily, causes dust can accumulate in the casing; Filter screen is cleared up ground very little, and the amount of dust that is attached on the filter screen is too big, can cause the radiating effect variation in the casing again, increases the interior temperature of casing of electronic installation, influences the serviceable life of the electronic package of electronic installation.
General common method for detecting all is a detecting electronic installation temperature inside, and temperature overheating will send alert news by the time, cleans filter screen to remind the user.Yet, because the change that influences the electronic installation internal temperature is because of a lot, electronic package in electronic installation generates heat when operation, the temperature such as the summer of environment for use is hotter, winter is colder, whether use in the cold air room etc. all can influence the temperature of electronic installation box house, so only judge by temperature whether this cleaning filter screen is not definitely objective.
Summary of the invention
The invention provides a kind of runner blockage detection method, whether it is blocked in order to the runner of detecting a device.
The invention provides a kind of device, whether it can utilize above-mentioned runner blockage detection method to detect its runner to be blocked.
The present invention proposes a kind of runner blockage detection method, whether a runner that is suitable for detecting in the device is obstructed, and be equiped with a fan in this device, and fan is arranged in runner, this runner blockage detection method comprises the following steps: a specific voltage is provided at least, makes the fan rotation; And a circuit for detecting is provided, this circuit for detecting is detected a current value of fan, and is judged the degree of being obstructed of runner by current value.
In an embodiment of runner blockage detection method of the present invention, more comprise according to the degree of the being obstructed decision of runner whether sending an alert news, the method for wherein sending alert news makes a lamp luminescence of device or utilizes loudspeaker ring sound for being presented in the display.
In an embodiment of runner blockage detection method of the present invention, more comprise and use a rotational speed governor to adjust the rotating speed of fan.
In an embodiment of runner blockage detection method of the present invention, the degree methods of being obstructed of judgement runner comprises sets up a database, and the data of the degree of being obstructed of the corresponding runner of current value of the interior storage of database fan.In addition, more store the data of the degree of being obstructed of the corresponding runner of current value of many corresponding fan different rotating speeds in the database.
The present invention proposes a kind of device in addition, and it comprises a runner and a runner blockage detection system.The runner blockage detection system is arranged in the device, and the runner blockage detection system comprises a fan and a circuit for detecting.Fan arrangement is in runner, and wherein a specific voltage drive fan is rotated, and circuit for detecting is electrically connected with fan, and a current value of circuit for detecting detecting fan is to judge the degree of being obstructed of runner.
In an embodiment of apparatus of the present invention, wherein circuit for detecting comprises an operational amplifier (operational amplifier), analogue-to-digital converters (analogy-digitalconverter) and a firmware (firmware), operational amplifier is in order to amplify a measured pressure drop, and analogue-to-digital converters are electrically connected with operational amplifier, pressure drop is converted to a digital signal, and firmware is electrically connected with analogue-to-digital converters, in order to the comparison digital signal, to judge the degree of being obstructed of runner.
In an embodiment of apparatus of the present invention, more comprise a filter screen that is disposed in the runner, wherein filter screen has a plurality of filter openings.In addition, filter screen can disassemble from runner.
In an embodiment of apparatus of the present invention, more comprise an attention device that is electrically connected with circuit for detecting, this attention device is in order to provide an alert news.
Based on above-mentioned, whether the runner that runner blockage detection method of the present invention can arrangement for detecting is obstructed, and cleans filter screen to promote radiating effect to remind the user.In addition, filter screen can disassemble from runner, increases the convenience that the user cleans filter screen.
For the above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended accompanying drawing to be described in detail below.
Description of drawings
Fig. 1 is the sectional perspective synoptic diagram of one of first embodiment of the invention device.
Fig. 2 is the block schematic diagram of device shown in Figure 1.
Fig. 3 is the circuit diagram of runner blockage detection shown in Figure 2 system.
Fig. 4 is the step synoptic diagram of the runner blockage detection method of one embodiment of the invention.
Fig. 5 is the broken line graph of table 1 flow passage aperture size and current value relation.
Fig. 6 utilizes monitoring software to show the synoptic diagram of rotating speed, intensity and the runner blockage degree of fan on display.
Fig. 7 is the broken line graph of table 2.
Fig. 8 is the partial schematic diagram of the device of second embodiment of the invention.
Embodiment
Below at first describe the first embodiment of the present invention in detail.
Fig. 1 is the sectional perspective synoptic diagram of one of first embodiment of the invention device, and Fig. 2 is the block schematic diagram of device shown in Figure 1.Please also refer to Fig. 1 and Fig. 2, this device 100 can be a main frame, and it comprises a runner 110 and a runner blockage detection system 120, and wherein runner blockage detection system 120 comprises a fan 122 and a circuit for detecting 124.Fan 122 is configured in the runner 110, and gives fan 122 1 specific voltages with drive fan 122 rotations.Circuit for detecting 124 is electrically connected with fan 122, and circuit for detecting 124 is in order to the current value of detecting fan 122, to judge the degree of being obstructed of runner 110.It should be noted that, the runner 110 of present embodiment be not be narrow sense utilize tube to be limited to the hypostazation runner, but be subjected to that specific voltage drives and rotate and when forming the forced flow of air-flow at fan 122, wind turnover fan 122 all can be defined as the runner 110 of present embodiment widely through part, and in order to allow the reader understand the runner 110 of present embodiment indication, therefore with dashed lines roughly indicates the possible range of runner 110 in Fig. 1.Fig. 3 is the circuit diagram of runner blockage detection shown in Figure 2 system.Please also refer to Fig. 2 and Fig. 3, circuit for detecting 124 comprises an operational amplifier 124a, an analogue-to-digital converters 124b and a firmware 124c, wherein operational amplifier 124a is in order to amplify a pressure drop, and this pressure drop is to offer the electric current of fan 122 voltage difference that resistance R 1 produced of flowing through, and just flows into the input voltage (V of resistance R 1
In) and through the output voltage (V after the resistance R 1
Out) between difference, and analogue-to-digital converters 124b is electrically connected with operational amplifier 124a, and in order to pressure drop is converted to digital signal, and firmware 124c is electrically connected with analogue-to-digital converters 124b, and utilize this digital signal to try to achieve the current value that is supplied to fan 122.Because it is known supplying with the magnitude of voltage of fan 122 and the resistance value of resistance R 1, thus as long as utilize formula V=IR to come computing, just can obtain supplying with the current value of fan 122, to judge the degree of being obstructed of runner 110.Wherein operational amplifier 124a can be a differential amplifier (Differential Amplifier), and the resistance value of resistance R 1 must be very little so as not to influence to the power supply of fan 122.
Fig. 4 is the step synoptic diagram of the runner blockage detection method of one embodiment of the invention.Please also refer to Fig. 1, Fig. 2 and Fig. 4, whether the runner 110 that runner blockage detection method is used for arrangement for detecting 100 is obstructed, and this runner blockage detection method comprises the following steps: specific voltage is provided so that fan 122 rotates, as step S110 at least; And the current value that utilizes circuit for detecting 124 detecting fans 122, and judge the degree of being obstructed of runner 110 by current value, as step S120.In addition, before providing specific voltage, can set up a database earlier to fan 122, and the data of the degree of being obstructed of the corresponding runner 110 of current value of the interior storage of database fan 122, as step S100.The above-mentioned degree of being obstructed by current value judgement runner 110 promptly is with measured current value and the comparison of the data in the database.
Then please refer to Fig. 2, Fig. 3 and Fig. 4, is that 12 volts (V) are the example explanation with the specific voltage that fan 122 is provided, and this specific voltage makes fan 122 with fixing rotational speed.Because fan 122 series resistor R1, so from the output voltage (V of resistance R 1
Out) meeting and input voltage (V originally
In) difference is arranged and form pressure drop, and operational amplifier 124a amplifies measured pressure drop.Belong to a kind of analog signal because of being still after the pressure drop amplification, so this analog signal is sent among the analog to digital signal converter 124b again, after via analog to digital signal converter 124b analog signal being converted to digital signal, again this digital signal is sent to firmware 124c, calculate current value and compare data in resulting current value and the database by firmware 124c, to judge the degree of being obstructed of runner 110.Subsidiary one carries, and the firmware 124c of present embodiment is independent of outside the analog to digital signal converter 124b, and in the embodiment that other does not indicate, firmware 124c is built among the analog to digital signal converter 124b in also can being.
Table 1 is under fixing rotating speed, the measured current value in aperture of different runners 110.Fig. 5 is the broken line graph of table 1 flow passage aperture size and current value relation.Wherein, the data of table 1 promptly are the data that can be stored in the database.
Under table 1, the fixed rotating speed, the current value that different flow passage aperture is measured.
Please also refer to table 1, Fig. 1 and Fig. 5, the X-axis of Fig. 5 is the degree that is capped of flow passage aperture, and Y-axis is a current value.Wherein, the degree that is capped of flow passage aperture can divide into nothing, special little, little, in, big, especially big and be capped fully, with the degree of congestion of expression runner 110." be capped " the whole runner of expression 110 fully and intactly covered, or in the runner 110 dirt accumulation is arranged, and the dust total blockage of gathering lives runner 110, make air-flow to pass through by foreign matter." nothing " represents that then runner 110 is unimpeded and is not blocked by foreign matter, or runner 110 interior also gathering of free from dust.
By table 1, Fig. 1 and Fig. 5 as can be known, when runner 110 be fully unimpeded and not by foreign body obstruction or do not have dirt accumulation in wherein the time, the turnover of air can be the load of fan 122, so need bigger current value come drive fan 122 to rotate.When foreign body obstruction runner 110 or dust adsorb gradually and accumulate in the runner 110, dust gather the pore size that can change runner 110, make intake reduce, this moment fan 122 load reduction, so current value diminishes gradually.When runner 110 is covered fully by foreign matter or is lived by the dust total blockage, will cause vacuum effect because there being the air-flow turnover, fan 122 can idle running, and then make current value descend.By above-mentioned result, the user just can judge the degree of congestion that is subjected to of runner 110 from the current value that is detected, to install then and 100 move to comparatively the place that ventilates, foreign matter be removed or clean the dust that accumulates in the runner 110 from runner 110, to keep the unimpeded of runner 110.
Please continue with reference to figure 2 and Fig. 4, device 100 can more comprise an attention device 130 that is electrically connected with circuit for detecting 124, and this attention device 130 can send alert news and warns the user.Specifically, when circuit for detecting 124 record runner 110 be subjected to degree of congestion can have influence on the normal use of device 100 time, circuit for detecting 124 can determine whether sending alert news with the caution user, as step S130 according to the degree of congestion that is subjected to of measured runner 110.At this moment, whether the user can determine will to install and 100 move to the place that comparatively ventilates, remove and hinder the dust that distinguished and admirable foreign matter or cleaning accumulate in runner 110.The kind of attention device 130 can be used according to user's demand.For example, attention device 130 can be a display, and can utilize a monitoring software to show measured current value by display when device 100 is used, and reaches and reminds the user to keep the unimpeded of runner 110.Fig. 6 utilizes monitoring software to show the synoptic diagram of rotating speed, intensity and the runner blockage degree of fan on display.Wherein, it is X that X RPM represents the rotating speed of fan 120, flows to the degree of being obstructed and the dust coverage rate promptly is a correspondence, and wherein the high more expression runner blockage of dust coverage rate degree is high more.In addition, attention device 130 also can be a loudspeaker, normally does the time spent when the degree of congestion that detects runner 110 can influence device 100, and the loudspeaker sound that can ring sends caution sound and reminds the user.Moreover attention device 130 also can be a light fixture, and light fixture can be luminous to remind the user.
Please continue to what deserves to be mentioned is that device 100 can more comprise in order to adjust a rotational speed governor 140 of fan 122 rotating speeds with reference to figure 2.Generally speaking, running time growth along with electronic package (not shown) in the device 100 such as display card etc., the heat that electronic package produced can make in the device 100 and heat up, and this moment, rotational speed governor 140 just can be adjusted the rotating speed of fan 122 at temperature in the device 100, for example increased or reduced.In the present embodiment, rotational speed governor 140 can comprise the temperature sensor in order to temperature in the sensing apparatus 100.Certainly, according to different demands, the user also can select for use other different types of sensor to replace.
Because of the rotating speed of fan 122 can be adjusted, so need in database, store the different rotating speed of many corresponding fans 120, the be obstructed data of degree of the corresponding runner 110 of the current value of fan 122.Table 2 is under the situation of the different rotating speeds of fan 122, the relation of the aperture of runner 110 and measured current value.Fig. 7 is the broken line graph of table 2.
Under table 2, the different rotating speeds, the relation of flow passage aperture and measured current value.
Please also refer to table 2 and Fig. 7, in table 2, to being first rotating speed, second rotating speed, the 3rd rotating speed and the 4th rotating speed in regular turn slowly, and the numerical value of table 1 promptly is to be that fixed rotating speed records with first rotating speed to rotating speed by fast.The expression mode of the size in aperture is identical with table 1, so repeat no more.As shown in Figure 7, rotating speed is slow more, and measured current value is also relatively more little.
Then please also refer to Fig. 2, Fig. 7 and table 2, what deserves to be mentioned is, when rotational speed governor 140 changes the rotating speed of fan 122, circuit for detecting 120 can detecting fans 122 electric current, this moment, firmware 124c can go for the degree of congestion of corresponding runner 110 according to the rotating speed of fan 122 and the current value that is detected.For example, the current value that circuit for detecting 120 records is about 65.4 milliamperes (mA), and close electric current has fan 122 when being especially big with the 3rd rotational speed and pore size 65 milliamperes, and fan 122 65.8 milliamperes when being " nothing " with second rotational speed and pore size, this moment, list also can't be differentiated the degree of being obstructed of runner 110 from current value, so need can differentiate the degree of being obstructed of runner 110 with reference to the rotating speed of fan 122 definitely.
From the above, under the situation that fan 122 rotates with fixed rotating speed, the runner blockage detection method of present embodiment be not be with the more temperature of variable as with reference to become because of, but judge the degree of being obstructed of runner merely with the pore size of runner.In addition, consider that electronic package can make temperature increase in the device 100, need to adjust the rotating speed of fan 122 to increase radiating effect, so in database, store under many different rotating speeds, the data of the aperture of different runners and measured current value, simultaneously reference rotation velocity and measured current value just can be learnt the degree of congestion that is subjected to of runner.So compared to known technology, the change of the runner blockage detection method of present embodiment is because of simple and few, and can not be subjected to external environment and the change that changes because of, so comparatively objective and accurate.So, be difficult for taking place when the user sets about clearing up runner 110, find that the dirt accumulation degree in the runner 110 is slight, need also to be not enough to cleaning in fact.
Though the device 100 of present embodiment is to be the example explanation with the main frame, but other electronic installation of installing electronic package is arranged or do not install in the device of electronic package yet can external present embodiment the runner blockage detection system, utilize the runner blockage method of present embodiment to detect the degree of being obstructed of its runner.
Below describe the second embodiment of the present invention in detail.
The present embodiment and first embodiment are roughly the same, and same or similar part just repeats no more.Fig. 8 is the partial schematic diagram of the device of second embodiment of the invention.Please refer to Fig. 8, the difference of the present embodiment and first embodiment is: the device 200 of present embodiment more comprises a filter screen 250 that is disposed in the runner 110, and this filter screen 250 has a plurality of filter openings 252, and filter screen 250 can disassemble from installing 200.For example, the filter screen 250 and the electronic package 260 of present embodiment fit together, and this electronic package 260 is a display card (video graphic array (VGA) display card).
The filter screen 250 of present embodiment can be an electrostatic adhesion filter screen, and fan 122 has air-flow when rotating and passes filter screen 250 with in-out apparatus 200, and in the broadest sense, air-flow in-out apparatus 200 can form runner 110, and swim in suspended particles or dust in the air-flow, just can be adsorbed on the filter screen 250.
Identical with first embodiment, the device 200 of present embodiment also is to utilize the runner blockage detection method of first embodiment to detect the degree of congestion of runner 110, and runner degree of congestion herein is the dust degree of absorption on the filter screen 250.Method relevant for the degree of congestion of detecting runner 110 describes in detail in first embodiment, just repeats no more in present embodiment.
Moreover filter screen 250 is removably 200 to fit together with device, for example utilizes mutual engaging, close-fitting or the sliding mode such as establish of structure.So when attention device 130 (being shown in Fig. 2) sent alerting and notifies the user to clean filter screen 250, the user can disassemble filter screen 250 easily from installing 200, or extract out outside device 200, carry out the cleaning of filter screen 250.
Though the fan of above-mentioned two embodiment is respectively to be installed in power supply unit and display card, present technique field personnel also can be installed in fan other place of device according to actual demand.
In sum, the reference that the present invention gets runner blockage detection method becomes because of more known simple and less, and can not be subjected to external environment and the change that changes because of, so measured result is objective and accurate than known technology.In addition, installing runner blockage detection system in device just can this runner blockage method measures and learns the degree of congestion of the runner of device, device moved to the ventilation, to remove the dust on the filter opening that accumulates in the dust in the device or be adsorbed on filter screen.Owing to utilize the measured result of this runner blockage method comparatively objective, thus do not have the user with filter screen when device disassembles, find that the dust degree of absorption of filter screen need also to be not enough to cleaning in fact, the user is had ease of use.Moreover filter screen removably is assembled on the device, allows the user easily filter screen be extracted out from device or to clean after device disassembles.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention, to have in any affiliated technical field and know the knowledgeable usually, without departing from the spirit and scope of the invention; when doing a little change and retouching, protection scope of the present invention should be defined with claim and is as the criterion.
Claims (11)
1. runner blockage detection method, whether a runner that is used for detecting a device is obstructed, and is equiped with a fan in the described device, and described fan is arranged in described runner, and described runner blockage detection method comprises:
One specific voltage is provided, makes described fan rotation; And
One circuit for detecting is provided, and described circuit for detecting is detected a current value of described fan, and is judged the degree of being obstructed of described runner by described current value.
2. according to the described runner blockage detection method of claim 1, it is characterized in that also comprise according to the degree of the being obstructed decision of described runner whether sending an alert news.
3. according to the described runner blockage detection method of claim 2, it is characterized in that the method for sending described alert news is to be shown in the display, to make a lamp luminescence of described device or to utilize loudspeaker ring sound.
4. according to the described runner blockage detection method of claim 1, it is characterized in that, also comprise and use a rotational speed governor, to adjust the rotating speed of described fan.
5. according to the described runner blockage detection method of claim 1, it is characterized in that, the degree methods of being obstructed of judging described runner comprises sets up a database, and stores the data of the degree of being obstructed of the corresponding described runner of described current value of described fan in the described database.
6. according to the described runner blockage detection method of claim 5, it is characterized in that, more store the data of the degree of being obstructed of the corresponding described runner of described current value of many described fan different rotating speeds of correspondence in the described database.
7. device comprises:
One runner;
One runner blockage detection system is arranged in the described device, and described runner blockage detection system comprises:
One fan is disposed in the described runner, and wherein a specific voltage drives described fan rotation; And
One circuit for detecting is electrically connected with described fan, and described circuit for detecting is detected a current value of described fan, to judge the degree of being obstructed of described runner.
8. according to the described device of claim 7, it is characterized in that described circuit for detecting comprises:
One operational amplifier is in order to amplify a measured pressure drop;
One analogue-to-digital converters are electrically connected with described operational amplifier, so that described pressure drop is converted to a digital signal; And
One firmware is electrically connected with described analogue-to-digital converters, in order to compare described digital signal, to judge the degree of being obstructed of described runner.
9. according to the described device of claim 7, it is characterized in that, also comprise a filter screen, be disposed in the described runner, wherein said filter screen has a plurality of filter openings.
10. according to the described device of claim 9, it is characterized in that described filter screen can disassemble from described runner.
11., it is characterized in that according to the described device of claim 1, also comprise an attention device, be electrically connected with described circuit for detecting, in order to an alert news to be provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101357886A CN101876669A (en) | 2009-04-29 | 2009-04-29 | Device and runner blockage detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101357886A CN101876669A (en) | 2009-04-29 | 2009-04-29 | Device and runner blockage detection method |
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|---|---|
| CN101876669A true CN101876669A (en) | 2010-11-03 |
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ID=43019278
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101357886A Pending CN101876669A (en) | 2009-04-29 | 2009-04-29 | Device and runner blockage detection method |
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| CN (1) | CN101876669A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122964A (en) * | 2014-07-15 | 2014-10-29 | 深圳雅图数字视频技术有限公司 | Dust screen detection method and device in radiating system |
| WO2017088445A1 (en) * | 2015-11-27 | 2017-06-01 | 小米科技有限责任公司 | Service life calculation method and apparatus thereof |
| CN109644577A (en) * | 2016-12-13 | 2019-04-16 | 华为技术有限公司 | The unit and method of the radiating state of monitoring device |
-
2009
- 2009-04-29 CN CN2009101357886A patent/CN101876669A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122964A (en) * | 2014-07-15 | 2014-10-29 | 深圳雅图数字视频技术有限公司 | Dust screen detection method and device in radiating system |
| WO2017088445A1 (en) * | 2015-11-27 | 2017-06-01 | 小米科技有限责任公司 | Service life calculation method and apparatus thereof |
| US10247654B2 (en) | 2015-11-27 | 2019-04-02 | Xiaomi Inc. | Method and device for calculating consumed lifespan |
| EP3187241B1 (en) * | 2015-11-27 | 2020-02-19 | Xiaomi Inc. | Method and device for calculating consumed lifespan |
| CN109644577A (en) * | 2016-12-13 | 2019-04-16 | 华为技术有限公司 | The unit and method of the radiating state of monitoring device |
| CN109644577B (en) * | 2016-12-13 | 2020-05-08 | 华为技术有限公司 | Device, device and method for monitoring heat dissipation state of device |
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Application publication date: 20101103 |