CN1543034A - Fan protective device and method - Google Patents
Fan protective device and method Download PDFInfo
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- CN1543034A CN1543034A CNA031243142A CN03124314A CN1543034A CN 1543034 A CN1543034 A CN 1543034A CN A031243142 A CNA031243142 A CN A031243142A CN 03124314 A CN03124314 A CN 03124314A CN 1543034 A CN1543034 A CN 1543034A
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Abstract
This invention discloses a fan protection device and its related method, in which, the method can design stop times and long- time of stop times for the fan including the following steps: when abnormal things happen a. to stop operation of the fan b. to determine if said stop operation times are equal to those of designed c. to start the fan if they are not the same d. to judge if the fan operates normally e. to reset the stop times when it operates normally f. to carry out step (h) when said stop operation times are equal to the set one g. repeat steps from a to f and h. to stop the fan supply. This method can set the fan automatic restart times and unit circulation time of idle or restart.
Description
Technical field
The present invention relates to a kind of system protection device and method, and be meant a kind of protective device and method of system fan especially.
Background technology
In many electronic products, fan is main heat radiation instrument.When system temperature was too high, fan promptly can increase rotating speed to reduce the total system temperature, reaches the heat radiation purpose, and when system temperature drops to a particular value, fan promptly can rotate with a predetermined speed.
Can not burn for fear of total system traditionally, can in system, install a radiator fan additional usually and be protected because temperature is too high.For traditional radiator fan; when blocking because of foreign matter can not rotate the time; at this moment, the protective device of fan can force fan to shut down; after special time warp; fan row again starts automatically, if abnormality is not got rid of yet behind the starting fan, fan protector can force fan to shut down once more; after special time warp, row starts automatically again.In other words, the method for removing of conventional fan abnormality is to allow fan shut down, and restarts again, utilizes this cyclic process that stops to restart, and gets rid of abnormality.
Yet the method for removing of this traditionally fan abnormality can run into many difficulties, and at first, if the fan abnormality continues and can not solve, traditional practice is to allow fan be in the cyclic process that stops, starting always, easily causes the fan damage.Secondly, because fan in start-up course, needs bigger starting current, therefore, under this cyclic process that stops, starting, can cause the instability of system.
Above-mentioned traditional fan protector and method, the method for removing of its abnormality are got rid of by the cyclic process that fan stops, restarting.Yet the method for removing that tradition utilization stops, restarting owing to lack the criterion whether abnormality can be got rid of, easily causes the damage of fan.And under this cyclic process that stops, restarting,, can cause the instability of system owing to the big electric current of moment demand of starting fan.
Summary of the invention
Main purpose of the present invention is at above-mentioned shortcoming, has proposed a kind of fan protector and method, and whether its decidable abnormality can be got rid of, and avoids fan to be in the cyclic process that stops, restarting for a long time and causes damage.
Another object of the present invention is that a kind of fan protector and method are being provided, and the row again that can stop fan when abnormality can't be got rid of starts, and avoids simultaneously because of the unstable instability that causes total system of electric current.
To achieve these goals, the invention provides a kind of fan protection method, wherein this method can be set fan and stops number of times and stop number of times for a long time, is used in this fan when having abnormality to take place, and this method comprises the following step at least:
(a) allow this fan shut down;
(b) determine this number of times that shuts down whether to equal this setting and stop number of times;
(c) when being not equal to, this number of times that shuts down starts this fan when this setting stops number of times;
(d) judge whether fan runs well;
(e) this setting of resetting when this fan can run well stops number of times;
(f) when this number of times that shuts down equals this setting and stops number of times, execution in step (h);
(g) repeat (a) to (f) step; And
(h) interrupt this fan power supply.
The present invention also provides another fan protection method, and wherein this method can be set fan and stops number of times and stop number of times for a long time, is used in this fan when having abnormality to take place, and this method comprises the following step at least:
(a) allowing this fan carry out first shuts down;
(b) determine whether this first number of times that shuts down equals this setting and stop number of times;
(c) first shut down number of times when being not equal to this setting and stopping number of times when this, start this fan;
(d) first shut down number of times when equaling this setting and stopping number of times, execution in step (f) when this;
(e) repeat (a) to (d) step;
(f) allowing this fan carry out second shuts down;
(g) determine whether this second number of times that shuts down equals this and stop number of times for a long time;
(h) second shut down number of times when being not equal to this and stopping number of times for a long time when this, start this fan;
(i) second shut down number of times when equaling this and stopping number of times for a long time, execution in step (k) when this;
(j) repeat (a) to (i) step; And
(k) interrupt this fan power supply.
Correspondingly, the present invention also provides a kind of fan protector, and this fan protector can be set the automatic number of starts of a fan and stop number of times for a long time, is used in this fan when having abnormality to take place, and this fan protector comprises at least:
One control circuit is in order to control the stop and start of this fan;
One first counter, be connected in this control circuit, in order to count the number of starts of this fan, can produce a control signal when the automatic number of starts of fan that the number of starts of this first this fan that counter is counted equals to set, wherein this control signal can be sent to this control circuit and carry out shutting down of very first time length to control this fan; And
One second counter, be connected in this first counter in order to receive this control signal, and count this fan and carry out the very first time and stop number of times, when this very first time stop number of times equaling this setting stop number of times for a long time the time, this control circuit can interrupt the power supply of this fan.
In addition, the present invention also provides another fan protector, and this fan protector can be set the automatic number of starts of a fan and stop number of times for a long time, is used in this fan when having abnormality to take place, and this fan protector comprises at least:
One control circuit is in order to control the stop and start of this fan;
One first counter, be connected in this control circuit, in order to count the number of starts of this fan, can produce a control signal when the automatic number of starts of fan that the number of starts of this first this fan that counter is counted equals to set, wherein this control signal can be sent to this control circuit and carry out shutting down of very first time length to control this fan; And
One second counter, be connected in this first counter in order to receive this control signal, and count this fan and carry out the very first time and stop number of times, when this very first time stop number of times equaling this setting stop number of times for a long time the time, this control circuit can interrupt the power supply of this fan.
According to fan protection method of the present invention; can be to the capable more automatically actuated number of times of fan; be in the unit that stops, restarting with fan and set circulation timei, when fan has abnormality to take place, can stop fan running immediately; treat through the unit that sets after circulation timei; row starts fan automatically again, if this automatically actuated number of times reaches the automatic number of starts of accepting that sets; and the fan abnormality is not got rid of yet, and the present invention promptly can cut off fan power supply.Therefore the method according to this invention can be avoided fan to be in the cyclic process that stops, restarting for a long time and causes damage.Avoid causing the instability of total system simultaneously because of starting current.
Description of drawings
Fig. 1 is the first enforcement illustration of the fan protection flow process of preferred embodiment of the present invention;
Fig. 2 is the second enforcement illustration of the fan protection flow process of preferred embodiment of the present invention;
Fig. 3 is the fan protector skeleton diagram of preferred embodiment of the present invention;
Wherein, description of reference numerals is as follows:
101 to 113 steps
201 control IC
202 first counters
203 second counters
Embodiment
Do not limiting under spirit of the present invention and the range of application, below with a specific embodiment, introduce enforcement of the present invention; Those skilled in the art; after understanding spirit of the present invention; can use fan protector of the present invention and method in various heat abstractor; by fan protector of the present invention and method, can avoid fan to be in the cyclic process that stops, restarting for a long time and cause damage.Avoid the instability that switching caused of system simultaneously because of fan.Application of the present invention is when the preferred embodiment that is not limited only to the following stated.
As shown in Figure 1, be according to the fan protection method first embodiment flow chart of the present invention, the present invention utilizes a counter to judge whether the abnormality of fan really can't be got rid of.
At first when abnormality takes place, for example fan block because of the intervention of foreign matter situation the time, this moment, system can force fan to quit work, and also promptly entered step 101 and allowed fan be in halted state, and this moment, the length of dwell time can be set up on their own by the user.Then in step 102, calculate fan and stop number of times, method of the present invention is to utilize a counter to calculate, the initial value that is about to set subtracts 1, wherein initial value can set up the automatic number of starts of acceptable fan on their own by the user, and judge that in step 103 fan stops number of times and whether equals to set the acceptable number of times that stops, promptly whether the stored setting numerical value of counter has been 0.
If the stored setting numerical value of judging in step 103 of counter has been 0, represent that promptly fan is forced to the number of times that number of times out of service has reached setting, promptly fan all can not restart in this set point number, so this flow process meeting stop supplies fan electric power, allows fan quit work.On the other hand, if the stored setting numerical value right and wrong 0 of counter in that step 103 is judged then enter step 104, postpone after 1 second earlier, again at step 105 fan that resets automatically, and judge abnormality in step 106, promptly whether fan situation about blocking is got rid of, if get rid of yet, be that fan is when still being pinned by foreign matter, then get back to step 101 once more and allow fan be in halted state once more, wherein also can set up on their own the time of delay of step 104, for example postpone 3 seconds by the user.If remove in step 106 judgement abnormality, be that fan is not pinned by foreign matter and after can running well, promptly can enter the step 107 setting numerical value replacement (reset) that counter is stored and be user's set point, and allow the fan continuous running in step 108, get back to step 106 simultaneously and judge whether fan is blocked by foreign matter once more, if blocked by foreign matter again, then get back to step 101, otherwise repeating step 107 to 108 allows the fan continuous running.
In fact; the flow process of above-mentioned first embodiment also capable of being combined; promote the accuracy of judgement; as shown in Figure 2; be according to the fan protection method second embodiment flow chart of the present invention; wherein second embodiment utilizes two counters, is respectively that first and second counter judges whether the abnormality of fan really can't be got rid of.
At first when abnormality takes place, when for example fan because of the intervention of foreign matter blocking case took place, this moment, system can force fan to shut down, and promptly entered step 101 and allowed fan be in halted state, and this moment, the length of dwell time can be set up on their own by the user.Then in step 102, calculate fan and stop number of times, method of the present invention is to utilize one first counter to calculate, the initial value that is about to set subtracts 1, wherein initial value can set up the automatic number of starts of acceptable fan on their own by the user, and judge that in step 103 fan stops number of times and whether equals to set the acceptable number of times that stops, promptly whether the stored setting numerical value of first counter has been 0.
As if the stored setting numerical value right and wrong of judging in step 103 0 of first counter, then enter step 104, postpone after 1 second earlier, again at step 105 fan that resets automatically, and judge abnormality in step 106, promptly whether fan situation about blocking is got rid of, if get rid of yet, be fan when still being pinned, then get back to step 101 once more and allow fan be in halted state once more by foreign matter.If remove in step 106 judgement abnormality, be that fan is not pinned by foreign matter and after can running well, promptly can enter the step 107 setting numerical value replacement (reset) that counter is stored is 0, and allow the fan continuous running in step 108, get back to step 106 simultaneously and judge whether fan is blocked by foreign matter once more, if blocked by foreign matter again, then get back to step 101, otherwise repeating step 107 to 108 allows the fan continuous running.The number of times of cyclic process can be by the stored initial value decision of first counter that the user sets from step 101 to step 108, for example if the initial value that the user sets is 10, then step 101 to the cyclic process of step 108 is to the maximum 10 times, even through 10 times cyclic process, when the pinning situation of fan abnormality is not got rid of yet, then can carry out next circulation, at first initially directly loading once more in first counter that step 109 sets the user.
When fan through step 101 to step 108 cyclic process, if the fan-status abnormality do not get rid of yet, it is longer that the present invention can allow fan be in time of halted state, the number of times that wherein allows fan be in long halted state equally also can be set up on their own by the user.In step 110, calculate the number of times that fan is in long halted state, method of the present invention is to utilize one second counter to calculate, and is about to the initial value that second counter loaded and subtracts 1, and the fan that its initial value also sets up on their own for the user is in the number of times of long halted state.Then judge that in step 111 fan is in the number of times whether number of times of long halted state equals to set, promptly whether the stored setting numerical value of second counter has been 0.If the stored setting numerical value of being judged in step 111 of second counter is not 0, then enter step 112, postpone after 1 minute, at step 105 fan that resets automatically,, then enter step 113 again if the value that is read is 0, cut off the power supply of fan, certainly, also can be set up on their own to the long or short time by the user time of delay in step 112, for example is 2 minutes.
In this circulation if get back to step 106 once more, judge once more promptly whether the situation that fan blocks is got rid of, if do not get rid of yet, be that fan is when still being pinned by foreign matter, then getting back to step 101 once more allows fan be in halted state once more, if remove in step 106 judgement abnormality, be that fan is not pinned by foreign matter and after can running well, promptly can enter the step 107 setting numerical value replacement (reset) that first counter is stored and be user's set point, and allow the fan continuous running in step 108, get back to step 106 simultaneously and judge whether fan is blocked by foreign matter once more, if blocked by foreign matter again, then get back to step 101, otherwise repeating step 107 to 108 allows the fan continuous running.Otherwise fan gets final product normal operation.
In other words, the second embodiment of the present invention can be step 112 delay one minute and after step 105 restarts fan, and meeting repeating step 101 is to the cyclic process of step 108.If the number of times of this circulation reaches the stored initial value of first counter that the user sets once more, and the abnormality of fan is not got rid of yet, then the initial value that can once more the user be set loads in first counter once more, enter step 109 simultaneously the storage values of second counter is subtracted 1 once more, and judge in step 111 whether the stored setting numerical value of second counter has been 0, if 0 interrupts fan power supply, otherwise once more repeated execution of steps 101 to step 112.In other words, if the initial value 6 that first counter, 1 user sets, and the time of at every turn resetting automatically is 10 seconds, and the initial value 10 that the second counter user sets, and the time of at every turn resetting automatically is 1 minute, then again through after 20 minutes, if the abnormality of fan is not got rid of yet, fan power supply promptly can be cut off.
By above-mentioned invention; can avoid traditionally owing to lack the flow process of judging whether abnormality can be got rid of; and the situation that causes fan to damage; and can avoid under this cyclic process that stops, restarting; influence because of the big electric current of starting fan moment need; allow system be in long-term unsettled situation, and method of the present invention is not limited in above-mentioned two kinds of embodiment, can be by with the mixed use of first embodiment and obtain various protection flow process.
Be the fan protector skeleton diagram of preferred embodiment of the present invention as shown in Figure 3, please consult Fig. 2 simultaneously.When fan had abnormality to produce, control IC 201 can allow fan shut down, treat that the fan run down time arrives user's set point after, control IC 201 can be sent an automatically activated signal and give first counter 202.After the automatic number of starts that first counter 202 is counted reaches the number of times that sets, the signal that A is ordered will become " High " value, triggering signal as second counter 203, the signal that while A is ordered also can be sent to control IC 201 and postpone one minute signal to fan to produce, receive this when fan and postpone one minute signal, just can shut down one minute, then control IC 201 can be sent automatically activated signal again.And on the other hand, when second counter 203 counts up to the number of times that sets, just can trigger a stop signal, the power supply that interrupts fan is supplied with, and allows fan not rerun.Opposite, if first counter 202 or second counter 203 be in counting process, the fan abnormality is excluded, and after promptly fan can run well, control IC 201 promptly can be sent a normal signal reset first counter 202 and second counter 203.
Though the present invention discloses as above with preferred embodiment, be not in order to qualification the present invention, those skilled in the art, without departing from the spirit and scope of the present invention, the equivalent structure transformation of having done all is included in the claim of the present invention.
Claims (12)
1. fan protection method, wherein this method can be set fan and stops number of times and stop number of times for a long time, is used in this fan when having abnormality to take place, and this method comprises the following step at least:
(a) allow this fan shut down;
(b) determine this number of times that shuts down whether to equal this setting and stop number of times;
(c) when being not equal to, this number of times that shuts down starts this fan when this setting stops number of times;
(d) judge whether fan runs well;
(e) this setting of resetting when this fan can run well stops number of times;
(f) when this number of times that shuts down equals this setting and stops number of times, execution in step (h);
(g) repeat (a) to (f) step; And
(h) interrupt this fan power supply.
2. fan protection method, wherein this method can be set fan and stops number of times and stop number of times for a long time, is used in this fan when having abnormality to take place, and this method comprises the following step at least:
(a) allowing this fan carry out first shuts down;
(b) determine whether this first number of times that shuts down equals this setting and stop number of times;
(c) first shut down number of times when being not equal to this setting and stopping number of times when this, start this fan;
(d) first shut down number of times when equaling this setting and stopping number of times, execution in step (f) when this;
(e) repeat (a) to (d) step;
(f) allowing this fan carry out second shuts down;
(g) determine whether this second number of times that shuts down equals this and stop number of times for a long time;
(h) second shut down number of times when being not equal to this and stopping number of times for a long time when this, start this fan;
(i) second shut down number of times when equaling this and stopping number of times for a long time, execution in step (k) when this;
(j) repeat (a) to (i) step; And
(k) interrupt this fan power supply.
3. a fan protector is characterized in that, this fan protector can be set the automatic number of starts of a fan, is used in this fan when having abnormality to take place, and this fan protector comprises at least:
One control circuit is in order to control the stop and start of this fan; And
One first counter is connected in this control circuit, in order to count the number of starts of this fan;
Wherein when the automatic number of starts of fan that the number of starts of this first this fan that counter is counted equals to set, can produce a control signal and be sent to this control circuit and shut down a very first time to control this fan.
4. fan protector as claimed in claim 3 is characterized in that, this fan abnormality is if be excluded, and then this control circuit can send reset signal this first counter of resetting.
5. fan protector as claimed in claim 3 is characterized in that, this very first time length can be set up on their own by the user.
6. fan protector as claimed in claim 3 is characterized in that, also comprises one second counter, is connected in this first counter, in order to control the shut down number of times of this very first time of this fan.
7. fan protector as claimed in claim 6 is characterized in that, the shut down number of times of this very first time of this fan can be set up on their own by the user.
8. fan protector as claimed in claim 7 is characterized in that, when the number of times that shuts down when this fan equaled number of times that this user sets up on their own, this control circuit can interrupt the power supply of this fan.
9. fan protector as claimed in claim 6 is characterized in that, this fan abnormality is if be excluded, and then this control circuit can send reset signal this second counter of resetting.
10. a fan protector is characterized in that, this fan protector can be set the automatic number of starts of a fan and stop number of times for a long time, is used in this fan when having abnormality to take place, and this fan protector comprises at least:
One control circuit is in order to control the stop and start of this fan;
One first counter, be connected in this control circuit, in order to count the number of starts of this fan, can produce a control signal when the automatic number of starts of fan that the number of starts of this first this fan that counter is counted equals to set, wherein this control signal can be sent to this control circuit and carry out shutting down of very first time length to control this fan; And
One second counter, be connected in this first counter in order to receive this control signal, and count this fan and carry out the very first time and stop number of times, when this very first time stop number of times equaling this setting stop number of times for a long time the time, this control circuit can interrupt the power supply of this fan.
11. fan protector as claimed in claim 10 is characterized in that, the stopping time number average for a long time and can be set up on their own by the user of this first dwell time length, the automatic number of starts of this fan and this setting.
12. fan protector as claimed in claim 10 is characterized in that, this fan abnormality is if be excluded, and then this control circuit can send reset signal reset this first counter and this second counter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031243142A CN100466411C (en) | 2003-04-30 | 2003-04-30 | Fan protective device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031243142A CN100466411C (en) | 2003-04-30 | 2003-04-30 | Fan protective device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1543034A true CN1543034A (en) | 2004-11-03 |
| CN100466411C CN100466411C (en) | 2009-03-04 |
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ID=34321643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031243142A Expired - Lifetime CN100466411C (en) | 2003-04-30 | 2003-04-30 | Fan protective device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100466411C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269173A (en) * | 2011-06-10 | 2011-12-07 | 海信（北京）电器有限公司 | Control device and method of direct current fan for refrigerator |
| CN107893774A (en) * | 2017-12-18 | 2018-04-10 | 青岛海信激光显示股份有限公司 | A kind of laser projection device fan operation method |
| CN108073252A (en) * | 2016-11-18 | 2018-05-25 | 台达电子工业股份有限公司 | Fan assembly and apply its electronic device |
| CN108087315A (en) * | 2017-12-18 | 2018-05-29 | 青岛海信激光显示股份有限公司 | A kind of laser projection device fan operation method |
| CN110888751A (en) * | 2018-09-11 | 2020-03-17 | 广达电脑股份有限公司 | Computer and automatic protection method thereof |
| CN111779702A (en) * | 2020-06-30 | 2020-10-16 | 中车青岛四方机车车辆股份有限公司 | Clamping stagnation fault processing method and device |
| CN114876840A (en) * | 2021-07-13 | 2022-08-09 | 长城汽车股份有限公司 | Duty ratio control method and device in fan starting process and vehicle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6225911B1 (en) * | 1998-07-30 | 2001-05-01 | Canon Kabushiki Kaisha | Information processing apparatus and its control method for cooling inside apparatus with fan |
| TW444104B (en) * | 1999-10-21 | 2001-07-01 | Mitac Technology Corp | Fan protection device |
| US6532151B2 (en) * | 2001-01-31 | 2003-03-11 | Hewlett-Packard Company | Method and apparatus for clearing obstructions from computer system cooling fans |
-
2003
- 2003-04-30 CN CNB031243142A patent/CN100466411C/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269173A (en) * | 2011-06-10 | 2011-12-07 | 海信（北京）电器有限公司 | Control device and method of direct current fan for refrigerator |
| CN108073252B (en) * | 2016-11-18 | 2019-11-29 | 台达电子工业股份有限公司 | Fan assembly and the electronic device for applying it |
| CN108073252A (en) * | 2016-11-18 | 2018-05-25 | 台达电子工业股份有限公司 | Fan assembly and apply its electronic device |
| CN108087315B (en) * | 2017-12-18 | 2019-12-06 | 青岛海信激光显示股份有限公司 | Laser projection equipment fan operation method |
| CN107893774B (en) * | 2017-12-18 | 2019-11-05 | 青岛海信激光显示股份有限公司 | A kind of laser projection device fan operation method |
| CN108087315A (en) * | 2017-12-18 | 2018-05-29 | 青岛海信激光显示股份有限公司 | A kind of laser projection device fan operation method |
| CN107893774A (en) * | 2017-12-18 | 2018-04-10 | 青岛海信激光显示股份有限公司 | A kind of laser projection device fan operation method |
| CN110594185A (en) * | 2017-12-18 | 2019-12-20 | 青岛海信激光显示股份有限公司 | Laser projection equipment fan operation method |
| CN110594185B (en) * | 2017-12-18 | 2021-03-09 | 青岛海信激光显示股份有限公司 | Laser projection equipment fan operation method |
| CN110888751A (en) * | 2018-09-11 | 2020-03-17 | 广达电脑股份有限公司 | Computer and automatic protection method thereof |
| CN110888751B (en) * | 2018-09-11 | 2023-03-24 | 广达电脑股份有限公司 | Computer and automatic protection method thereof |
| CN111779702A (en) * | 2020-06-30 | 2020-10-16 | 中车青岛四方机车车辆股份有限公司 | Clamping stagnation fault processing method and device |
| CN111779702B (en) * | 2020-06-30 | 2022-03-01 | 中车青岛四方机车车辆股份有限公司 | Clamping stagnation fault processing method and device |
| CN114876840A (en) * | 2021-07-13 | 2022-08-09 | 长城汽车股份有限公司 | Duty ratio control method and device in fan starting process and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100466411C (en) | 2009-03-04 |
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