CN104564759A - Finger-touch protection and alarm device of electric fan - Google Patents
Finger-touch protection and alarm device of electric fan Download PDFInfo
- Publication number
- CN104564759A CN104564759A CN201310497805.7A CN201310497805A CN104564759A CN 104564759 A CN104564759 A CN 104564759A CN 201310497805 A CN201310497805 A CN 201310497805A CN 104564759 A CN104564759 A CN 104564759A
- Authority
- CN
- China
- Prior art keywords
- circuit
- pin
- ne555ic1
- electric fan
- barking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a finger-touch protection and alarm device of an electric fan and relates to the technical field of protection and alarm for electric appliance. The finger-touch protection and alarm device is composed of a 555 time-base circuit, a contactless switch circuit connected with the 555 time-base circuit, a barking analog circuit connected with the 555 time-base circuit and a power circuit which provides stable working voltage for the 555 time-base circuit, the contactless switch circuit and the barking analog circuit. The finger-touch protection and alarm device of the electric fan has the advantages that when someone touches the metal mesh of the electric fan, the fans can be stopped timely and an alarm of barking sound can come out. Therefore, accidents can be avoided.
Description
Technical field
The present invention relates to the protection of a kind of electric type and warning device, specifically a kind of electric fan refers to touch protection and warning device.
Background technology
Electric fan on market, only has the function turned to speed governing.Although be provided with metal net mask outside electric fan blade, because the finger of child is comparatively thin, still finger can be inserted, there is potential safety hazard.Electric fan does not in the market have and touches power-off protection and warning function.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the invention provides a kind of electric fan and refer to touch protection and warning device, when there being people to touch the metal net mask of fan, fan will stall, and loudspeaker sends barking and reports to the police simultaneously.
The present invention realizes with following technical scheme: a kind of electric fan refers to touch warning device, this device comprises 555 ground mass circuit, the non-contact switch circuit be connected with 555 ground mass circuit, the barking mimic channel be connected with 555 ground mass circuit, provides the power circuit of stable operating voltage to 555 ground mass circuit, non-contact switch circuit and barking mimic channel.
Principle of work is: when there being people to touch the metal net mask of fan, and 555 ground mass circuit sending signals are to non-contact switch circuit, and non-contact switch circuit can allow the temporary transient dead electricity of fan stop operating, and the conducting of barking mimic channel sends barking and reports to the police.
Advantage of the present invention is: when there being people to touch the metal net mask of fan, can allow fan stall in time, sends barking simultaneously and reports to the police, effectively can avoid the generation of accident.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the present invention's electricity theory diagram;
Fig. 2 is circuit theory diagrams of the present invention.
As shown in Figure 1, electric fan refers to that touching warning device comprises 555 ground mass circuit, the non-contact switch circuit be connected with 555 ground mass circuit, the barking mimic channel be connected with 555 ground mass circuit, provides the power circuit of stable operating voltage to 555 ground mass circuit, non-contact switch circuit and barking mimic channel.
As shown in Figure 2,555 ground mass circuit comprise NE555IC1, resistance R1, R2 and electric capacity C1, C2; One end of R1 is connected with 2 pin of NE555IC1, the other end is connected with 4,8 pin of NE555IC1 simultaneously, one end of R2 is connected with 6,7 pin of NE555IC1 simultaneously, the other end is connected with 4,8 pin simultaneously, one end of C1 is connected with 2,6,7 pin of NE555IC1 simultaneously, the other end is connected by 5 pin of C2 with NE555IC1, and 2 pin of NE555IC1 contact with the metal cap TP of fan.
Non-contact switch circuit comprises transistor BG1, bidirectional triode thyristor CT, resistance R5, electric capacity C3 and adjustment potentiometer W.W is connected between the collector of BG1 and the G pole of CT, is connected in parallel on the two ends of W after R5, C3 series connection.Non-contact switch circuit is connected with 3 pin of NE555IC1 by the base stage of BG1.
Barking mimic channel comprises integrated circuit NS5608IC2, transistor BG2, BG3, resistance R5 and loudspeaker Y.The input pin of NS5608IC2 is connected with the emitter of BG2, between input pin and VSS pin, R5, VDD pin in parallel is connected to the collector of BG2 and one end of Y simultaneously, and output pin is connected with the base stage of BG3, the collector of BG3 is connected with the other end of Y, and emitter is connected with the VSS pin of NS5608IC2.Barking mimic channel is connected by 3 pin of resistance R3 with NE555IC1.
Power circuit comprises transformer B, fan motor DJ, bridge rectifier D 1 ~ D4, voltage stabilizing diode DW and electric capacity C5.The once end of B is connected with outside 220V AC power, and secondary terminals connects the input end of D1 ~ D4, between the output terminal being connected to D1 ~ D4 after C5, DW parallel connection.In power circuit, the primary side of B is connected with T1, T2 pole of CT in non-contact switch circuit by motor D J; In power circuit, the output terminal of bridge rectifier D1 ~ D4 connects 1,8 pin of NE555IC1 in 555 ground mass circuit; Output terminal in power circuit in bridge rectifier D1 ~ D4 is connected with VDD, VSS pin of NS5608IC2 in barking mimic channel.
When no one touches the metal net mask TP of fan, 555 ground mass circuit 3 pin output low levels, transistor BG1 conducting, control bidirectional triode thyristor CT conducting, thus have electric current by fan motor DJ, DJ is rotated, and its rotational speed depends on the voltage at DJ two ends.This voltage controls by CT conduction angle again.Adjustment potentiometer W can change the size of conduction angle, thus can change the size of air quantity of fan.If when someone touches fan metal net mask TP, then 555 pin export high level, transistor BG1 pipe is ended, force and control bidirectional triode thyristor CT cut-off, thus make fan stall, 3 pin also make transistor BG2 conducting simultaneously, trigger barking integrated circuit operation, and its output signal promotes loudspeaker Y and sends barking after transistor BG3 amplifies.When hand leaves metal net mask, after the time delay of R2C1,555 upsets reset, 3 pin output low levels, thus fan starts normal work.In addition, should notice that the metal net mask of fan and fuselage will have good insulativity when making.
This circuit achieves protection and the warning of electric fan cleverly; especially what is interesting is: when the hand of child touches metal net mask, fan also sends a burst of barking while dead electricity immediately, does not go to touch to warn child; after hand leaves metal net mask a few second, electric fan is sent a telegram in reply unlatching automatically.
Claims (3)
1. an electric fan refers to touch warning device, it is characterized in that: this device comprises 555 ground mass circuit, the non-contact switch circuit be connected with 555 ground mass circuit, the barking mimic channel be connected with 555 ground mass circuit, provides the power circuit of stable operating voltage to 555 ground mass circuit, non-contact switch circuit and barking mimic channel.
2. electric fan according to claim 1 refers to touch warning device, it is characterized in that: 555 described ground mass circuit comprise NE555IC1, resistance R1, R2 and electric capacity C1, C2; One end of R1 is connected with 2 pin of NE555IC1, the other end is connected with 4,8 pin of NE555IC1 simultaneously, one end of R2 is connected with 6,7 pin of NE555IC1 simultaneously, the other end is connected with 4,8 pin simultaneously, one end of C1 is connected with 2,6,7 pin of NE555IC1 simultaneously, the other end is connected by 5 pin of C2 with NE555IC1, and 2 pin of NE555IC1 contact with the metal cap TP of fan.
3. electric fan according to claim 1 refers to touch warning device, it is characterized in that: described non-contact switch circuit comprises transistor BG1, bidirectional triode thyristor CT, resistance R5, electric capacity C3 and adjustment potentiometer W; W is connected between the collector of BG1 and the G pole of CT, is connected in parallel on the two ends of W after R5, C3 series connection; Non-contact switch circuit is connected with 3 pin of NE555IC1 by the base stage of BG1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310497805.7A CN104564759A (en) | 2013-10-21 | 2013-10-21 | Finger-touch protection and alarm device of electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310497805.7A CN104564759A (en) | 2013-10-21 | 2013-10-21 | Finger-touch protection and alarm device of electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104564759A true CN104564759A (en) | 2015-04-29 |
Family
ID=53081609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310497805.7A Pending CN104564759A (en) | 2013-10-21 | 2013-10-21 | Finger-touch protection and alarm device of electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104564759A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832447A (en) * | 2015-05-26 | 2015-08-12 | 苏州达泰佳机械科技有限公司 | Finger touch alarming circuit of electric fan |
-
2013
- 2013-10-21 CN CN201310497805.7A patent/CN104564759A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832447A (en) * | 2015-05-26 | 2015-08-12 | 苏州达泰佳机械科技有限公司 | Finger touch alarming circuit of electric fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
|
| WD01 | Invention patent application deemed withdrawn after publication |