CN102865241A - Fan operational monitoring method based on fan operation current detection - Google Patents
Fan operational monitoring method based on fan operation current detection Download PDFInfo
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- CN102865241A CN102865241A CN2012103602761A CN201210360276A CN102865241A CN 102865241 A CN102865241 A CN 102865241A CN 2012103602761 A CN2012103602761 A CN 2012103602761A CN 201210360276 A CN201210360276 A CN 201210360276A CN 102865241 A CN102865241 A CN 102865241A
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Abstract
The invention discloses a fan operational monitoring method based on fan operation current detection. The fan operational monitoring method is implemented by building a fan operational monitoring device based on the fan operation current detection. The fan operational monitoring device consists of a fan operational current sampling circuit (1), a fan blocking rotation detection circuit (2), a fan rotation stopping detection circuit (3), a driving circuit (4) and an alarming circuit (5). Running alternating-current current of a fan is detected through the fan operational current sampling circuit (1), the alternating current is converted into setting direct current, the setting direct-current voltage is compared with standard voltage in the fan blocking rotation detection circuit (2) and the fan rotation stopping detection circuit (3), the driving circuit (4) outputs driving signals, and the alarming circuit (5) gives out acousto-optic alarming signals. The fan operational monitoring method is simple in theory, low in cost and reliable to use.
Description
Technical field
The present invention relates to a kind of fan operation monitoring method, particularly a kind of fan operation monitoring method based on the fan operation current detecting.
Background technique
Blower fan is cooling, venting gas appliance commonly used in the weaponry; if blower fan breaks down and does not in time find in the equipment normal course of operation; weaponry will freely not break down owing to the bad or exhaust of heat radiation; but fire hazard or other major accidents when serious; the lighter causes weaponry to be shut down; severe one can cause the weaponry paralysis, can't finish training or combat duty.Therefore the blower fan of keypoint part operation in the weaponry being carried out monitoring running state, is a kind of means that guarantee the normal operation of weaponry, also is the means that prevent from causing owing to fan trouble other faults of weaponry.
At present, the method for monitoring fan operation state comprises: Ocular estimate, rotating speed detection method.Ocular estimate is mainly monitored the running state of blower fan by the operator of weaponry, find that fan operation is unusual, takes immediately corresponding measure; The rotating speed detection method is utilized speed measurement device exactly, detects the running speed of blower fan, if fault is arranged, just sends alarm signal.
Ocular estimate monitoring fan operation reliability is relatively poor, and for the blower fan that can't estimate, then the method is invalid.Whether the rotating speed detection method can only detect blower fan and turn round, and can't locate blower fan is stall or stall, is unfavorable for taking timely and effectively measure to fix a breakdown, and speed detector needs the mounting point of characteristic simultaneously, also is unfavorable for using in weaponry.
Summary of the invention
The object of the invention is to provide a kind of fan operation monitoring method based on the fan operation current detecting, solves the blower fan automatic monitoring hard problem of keypoint part operation in the weaponry.
A kind of fan operation monitoring method based on the fan operation current detecting, its concrete steps are:
The first step is built the fan operation monitoring device based on the fan operation current detecting
Fan operation monitoring device based on the fan operation current detecting comprises: fan operation current sampling circuit, blower fan lock-rotor detection circuit, blower fan stall testing circuit, drive circuit and warning circuit.The output terminal of fan operation current sampling circuit is connected with blower fan stall testing circuit with the input end of blower fan lock-rotor detection circuit that the input end printed conductor is connected respectively, the output terminal of blower fan lock-rotor detection circuit is connected output terminal and is connected with the input end printed conductor of drive circuit respectively with blower fan stall testing circuit, and the defeated output terminal of drive circuit is connected with the input end printed conductor of warning circuit.
Second step fan operation current sampling circuit detects the fan operation electric current
In the fan operation current sampling circuit, the alternating current (a.c.) during with fan operation is converted to alternating voltage, and this ac voltage rectifier is become the VDC of adjusting.This VDC of adjusting is delivered to blower fan lock-rotor detection circuit and the blower fan stall testing circuit of rear end.
The 3rd step blower fan lock-rotor detection circuit output stall signal
The blower fan lock-rotor detection circuit receives the VDC of adjusting from the fan operation current sampling circuit, the blower fan locked-rotor voltage of this adjust VDC and setting is compared, VDC is greater than the blower fan stall voltage of setting if adjust, illustrate that blower fan is in the stall state, then the blower fan lock-rotor detection circuit is exported the positive voltage trouble signal, and this positive voltage trouble signal is delivered to the drive circuit of rear end.
The 4th step blower fan stall testing circuit output stall signal
Blower fan stall testing circuit receives the VDC of adjusting from the fan operation current sampling circuit, the blower fan stall voltage of this adjust VDC and setting is compared, VDC is less than the blower fan stall voltage of setting if adjust, illustrate that blower fan is in stop state, then blower fan stall testing circuit is exported the positive voltage trouble signal, and this positive voltage trouble signal is delivered to the drive circuit of rear end.
The 5th step drive circuit output fan trouble drives signal
After drive circuit receives the positive voltage trouble signal of blower fan lock-rotor detection circuit or blower fan stall testing circuit.In drive circuit, the positive voltage trouble signal of blower fan lock-rotor detection circuit or blower fan stall testing circuit is first through time-delay, inrush current when avoiding fan starting and the disturbance that occurs once in a while, compare respectively with setting voltage again, if the positive voltage trouble signal is greater than setting voltage, drive circuit output drive signal then.
The 6th step warning circuit sends alarm signal
The drive circuit output drive signal makes the actuating of relay of warning circuit, drives alarm, warning light action.
So far, finish a kind of fan operation monitoring method based on the fan operation current detecting.
This method is simple, practical, reliable, with low cost.Suit in weaponry, extensively to adopt, can improve the operational safety of weaponry.
Description of drawings
A kind of fan operation monitoring device structural drawing based on the fan operation current detecting of Fig. 1.
1. fan operation current sampling circuit 2. blower fan lock-rotor detection circuits 3. blower fan stall testing circuits 4. drive circuits
5. warning circuit.
Embodiment
A kind of fan operation monitoring method based on the fan operation current detecting, its concrete steps are:
The first step is built the fan operation monitoring device based on the fan operation current detecting
Fan operation monitoring device based on the fan operation current detecting comprises: fan operation current sampling circuit 1, blower fan lock-rotor detection circuit 2, blower fan stall testing circuit 3, drive circuit 4 and warning circuit 5.The output terminal of fan operation current sampling circuit 1 is connected with the input end printed conductor of drive circuit 4 with the output terminal that the input end printed conductor that the input end of blower fan lock-rotor detection circuit 2 is connected with blower fan stall testing circuit is connected, the output terminal of blower fan lock-rotor detection circuit 2 is connected with blower fan stall testing circuit respectively, and the output terminal of drive circuit defeated 4 is connected with the input end printed conductor of warning circuit 5.
Second step fan operation current sampling circuit 1 detects the fan operation electric current
In fan operation current sampling circuit 1, the alternating current (a.c.) during with fan operation is converted to alternating voltage, and this ac voltage rectifier is become the VDC of adjusting.This VDC of adjusting is sent to blower fan lock-rotor detection circuit 2 and the blower fan stall testing circuit 3 of rear end.
The 3rd step blower fan lock-rotor detection circuit 2 output stall signals
The VDC of adjusting that blower fan lock-rotor detection circuit 2 receives from the fan operation current sampling circuit, the blower fan locked-rotor voltage of this adjust VDC and setting is compared, in the VDC of adjusting during greater than the blower fan stall voltage set, blower fan is in the stall state, then blower fan lock-rotor detection circuit 2 is exported the positive voltage trouble signals, and this positive voltage trouble signal is delivered to the drive circuit 4 of rear end.
The 4th step blower fan stall testing circuit 3 output stall signals
The VDC of adjusting that blower fan stall testing circuit 3 receives from fan operation current sampling circuit 1, the blower fan stall voltage of this adjust VDC and setting is compared, in the VDC of adjusting during less than the blower fan stall voltage set, blower fan is in stop state, then blower fan stall testing circuit defeated 3 goes out the positive voltage trouble signal, and this positive voltage trouble signal is delivered to the drive circuit 4 of rear end.
The 5th step drive circuit 4 output fan troubles drive signal
After drive circuit 4 receives the positive voltage trouble signal of blower fan lock-rotor detection circuit 2 or blower fan stall testing circuit 3.In drive circuit 4, the positive voltage trouble signal of blower fan lock-rotor detection circuit 2 or blower fan stall testing circuit 3 is first through time-delay, inrush current when avoiding fan starting and the disturbance that occurs once in a while, compare respectively with setting voltage again, if the positive voltage trouble signal is greater than setting voltage, then the drive circuit output drive signal 4.
The 6th step warning circuit 5 sends alarm signal
So far, finish a kind of fan operation monitoring method based on the fan operation current detecting.
Claims (1)
1. fan operation monitoring method based on the fan operation current detecting is characterized in that concrete steps are:
The first step is built the fan operation monitoring device based on the fan operation current detecting
Fan operation monitoring device based on the fan operation current detecting comprises: fan operation current sampling circuit (1), blower fan lock-rotor detection circuit (2), blower fan stall testing circuit (3), drive circuit (4) and warning circuit (5); The output terminal of fan operation current sampling circuit (1) is connected 3 with the input end of blower fan lock-rotor detection circuit (2) with blower fan stall testing circuit respectively) the input end printed conductor be connected, the output terminal of blower fan lock-rotor detection circuit (2) is connected 3 with blower fan stall testing circuit) output terminal be connected with the input end printed conductor of drive circuit (4) respectively, the output terminal of drive circuit defeated (4) is connected with the input end printed conductor of warning circuit (5);
Second step fan operation current sampling circuit (1) detects the fan operation electric current
In fan operation current sampling circuit (1), the alternating current (a.c.) during with fan operation is converted to alternating voltage, and this ac voltage rectifier is become the VDC of adjusting; This VDC of adjusting is sent to blower fan lock-rotor detection circuit (2) and the blower fan stall testing circuit (3) of rear end;
The 3rd step blower fan lock-rotor detection circuit (2) output stall signal
Blower fan lock-rotor detection circuit (2) receives the VDC of adjusting from the fan operation current sampling circuit, the blower fan locked-rotor voltage of this adjust VDC and setting is compared, in the VDC of adjusting during greater than the blower fan stall voltage set, blower fan is in the stall state, then blower fan lock-rotor detection circuit (2) is exported the positive voltage trouble signal, and this positive voltage trouble signal is delivered to the drive circuit (4) of rear end;
The 4th step blower fan stall testing circuit (3) output stall signal
Blower fan stall testing circuit (3) receives the VDC of adjusting from fan operation current sampling circuit (1), the blower fan stall voltage of this adjust VDC and setting is compared, in the VDC of adjusting during less than the blower fan stall voltage set, blower fan is in stop state, then blower fan stall testing circuit defeated (3) goes out the positive voltage trouble signal, and this positive voltage trouble signal is delivered to the drive circuit (4) of rear end;
The 5th step drive circuit (4) output fan trouble drives signal
After drive circuit (4) receives the positive voltage trouble signal of blower fan lock-rotor detection circuit (2) or blower fan stall testing circuit (3); In drive circuit (4), the positive voltage trouble signal of blower fan lock-rotor detection circuit (2) or blower fan stall testing circuit (3) is first through time-delay, inrush current when avoiding fan starting and the disturbance that occurs once in a while, compare respectively with setting voltage again, if the positive voltage trouble signal is greater than setting voltage, drive circuit output drive signal (4) then;
The 6th step warning circuit (5) sends alarm signal
Drive circuit (4) output drive signal makes the actuating of relay of warning circuit (5), drives alarm, warning light action;
So far, finish a kind of fan operation monitoring method based on the fan operation current detecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103602761A CN102865241A (en) | 2012-09-25 | 2012-09-25 | Fan operational monitoring method based on fan operation current detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103602761A CN102865241A (en) | 2012-09-25 | 2012-09-25 | Fan operational monitoring method based on fan operation current detection |
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| CN102865241A true CN102865241A (en) | 2013-01-09 |
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| CN2012103602761A Pending CN102865241A (en) | 2012-09-25 | 2012-09-25 | Fan operational monitoring method based on fan operation current detection |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928140A (en) * | 2016-04-27 | 2016-09-07 | 北京栉风科技有限公司 | Method and device for detecting cleanliness degree of filter element |
| CN107317307A (en) * | 2017-06-09 | 2017-11-03 | 惠州市德赛西威汽车电子股份有限公司 | A kind of motor rotation blockage detection method and device |
| CN107797065A (en) * | 2017-10-19 | 2018-03-13 | 佘德勇 | Frequency conversion fan low speed operation troubles detects warning circuit |
| CN108757535A (en) * | 2018-05-30 | 2018-11-06 | 天津平高智能电气有限公司 | Fan operation monitoring method, system and blower fan system |
| CN109323330A (en) * | 2018-10-30 | 2019-02-12 | 青岛海尔空调器有限总公司 | A kind of air conditioner indoor unit, control method, control device |
| CN109303477B (en) * | 2017-07-28 | 2021-12-07 | 浙江绍兴苏泊尔生活电器有限公司 | Control method of cooking appliance |
| CN114635865A (en) * | 2022-02-28 | 2022-06-17 | 漳州科华电气技术有限公司 | Fan warning method, terminal and storage medium |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928140A (en) * | 2016-04-27 | 2016-09-07 | 北京栉风科技有限公司 | Method and device for detecting cleanliness degree of filter element |
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| CN107317307A (en) * | 2017-06-09 | 2017-11-03 | 惠州市德赛西威汽车电子股份有限公司 | A kind of motor rotation blockage detection method and device |
| CN109303477B (en) * | 2017-07-28 | 2021-12-07 | 浙江绍兴苏泊尔生活电器有限公司 | Control method of cooking appliance |
| CN107797065A (en) * | 2017-10-19 | 2018-03-13 | 佘德勇 | Frequency conversion fan low speed operation troubles detects warning circuit |
| CN108757535A (en) * | 2018-05-30 | 2018-11-06 | 天津平高智能电气有限公司 | Fan operation monitoring method, system and blower fan system |
| CN109323330A (en) * | 2018-10-30 | 2019-02-12 | 青岛海尔空调器有限总公司 | A kind of air conditioner indoor unit, control method, control device |
| CN114635865A (en) * | 2022-02-28 | 2022-06-17 | 漳州科华电气技术有限公司 | Fan warning method, terminal and storage medium |
| CN114635865B (en) * | 2022-02-28 | 2023-10-27 | 漳州科华电气技术有限公司 | Fan alarm method, terminal and storage medium |
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Application publication date: 20130109 |