CN102094843A - Finger contact protecting and alarming device for electric fan - Google Patents
Finger contact protecting and alarming device for electric fan Download PDFInfo
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- CN102094843A CN102094843A CN2009102628921A CN200910262892A CN102094843A CN 102094843 A CN102094843 A CN 102094843A CN 2009102628921 A CN2009102628921 A CN 2009102628921A CN 200910262892 A CN200910262892 A CN 200910262892A CN 102094843 A CN102094843 A CN 102094843A
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- barking
- electric fan
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Abstract
The invention discloses a finger contact protecting and alarming device for an electric fan, which relates to the technical field of protection and alarm of electric appliances. The finger contact protecting and alarming device comprises a 555 groundmass circuit, a non-contact switch circuit connected with the 555 groundmass circuit, a barking imitation circuit connected with the 555 groundmass circuit, and a power circuit supplying a stable working voltage for the 555 groundmass circuit, the non-contact switch circuit and the barking imitation circuit. The finger contact protecting and alarming device has the benefit that: when a metal screen of the fan is touched by people, the fan can be stopped in time and gives barks for alarming, and thus accidents can be avoided.
Description
Technical field
The present invention relates to a kind of electric type protection and warning device, specifically is that a kind of electric fan refers to touch protection and warning device.
Background technique
Electric fan on the market only has the function that turns to speed governing.Though electric fan flabellum outside is equipped with the metal guard, because child's finger is thinner, still finger can be inserted, exist potential safety hazard.Electric fan does not in the market have and touches power-off protection and warning function.
Summary of the invention
At 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 the people touched the metal guard of fan, fan will stall, and loudspeaker sends the sound of barking and reports to the police simultaneously.
The present invention realizes with following technological scheme: a kind of electric fan refers to touch warning device, this device comprises 555 ground mass circuit, the non-contact switch circuit that is connected with 555 ground mass circuit, the acoustic simulation circuit of barking that is connected with 555 ground mass circuit provides the power circuit of stable operating voltage for 555 ground mass circuit, non-contact switch circuit and the acoustic simulation circuit of barking.
Working principle is: when the people touched the metal guard of fan, 555 ground mass circuit sending signals were given non-contact switch circuit, and non-contact switch circuit can allow the temporary transient dead electricity of fan stop operating, and the acoustic simulation circuit turn-on of barking sends the acoustic alarm of barking.
Advantage of the present invention is: when the people touches the metal guard of fan, can in time allow the fan stall, send the acoustic alarm of barking simultaneously, can effectively avoid the generation of accident.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
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 touch warning device and comprises 555 ground mass circuit, the non-contact switch circuit that is connected with 555 ground mass circuit, the acoustic simulation circuit of barking that is connected with 555 ground mass circuit provides the power circuit of stable operating voltage for 555 ground mass circuit, non-contact switch circuit and the acoustic simulation circuit of barking.
As shown in Figure 2,555 ground mass circuit comprise NE555IC1, resistance R 1, R2 and capacitor C 1, C2; The end of R1 and 2 pin of NE555IC1 are connected, the other end is connected with 4,8 pin of NE555IC1 simultaneously, the end of R2 is connected with 6,7 pin of NE555IC1 simultaneously, the other end is connected with 4,8 pin simultaneously, the end of C1 is connected with 2,6,7 pin of NE555IC1 simultaneously, the other end is connected by 5 pin of C2 and NE555IC1, and 2 pin of NE555IC1 and the metal covering TP of fan contact.
Non-contact switch circuit comprises transistor BG1, bidirectional triode thyristor CT, resistance R 5, capacitor C 3 and adjusts potentiometer W.W is connected between the G utmost point of the collector electrode of BG1 and CT, is connected in parallel on the two ends of W after R5, the C3 series connection.Non-contact switch circuit is connected by the base stage of BG1 and 3 pin of NE555IC1.
The acoustic simulation circuit of barking comprises intergrated circuit NS5608IC2, transistor BG2, BG3, resistance R 5 and loudspeaker Y.The input pin of NS5608IC2 is connected with the emitter of BG2, R5 in parallel between input pin and the VSS pin, VDD pin are connected to the collector electrode of BG2 and the end of Y simultaneously, and the base stage of output pin and BG3 is connected, the collector electrode of BG3 is connected with the other end of Y, and the VSS pin of emitter and NS5608IC2 is connected.The acoustic simulation circuit of barking is connected by 3 pin of resistance R 3 and NE555IC1.
Power circuit comprises transformer B, fan motor DJ, bridge rectifier D 1～D4, reference diode DW and capacitor C 5.The once end of B is connected with outside 220V ac power supply, and secondary terminals connects the input end of D1～D4, is connected between the output terminal of D1～D4 after C5, the DW parallel connection.The first side of B is connected with T1, the T2 utmost point of CT in the non-contact switch circuit by motor D J in the power circuit; The output terminal of bridge rectifier D1～D4 connects 1,8 pin of NE555IC1 in the 555 ground mass circuit in the power circuit; Output terminal in the power circuit among bridge rectifier D1～D4 is connected with VDD, the VSS pin of NS5608IC2 in the acoustic simulation circuit of barking.
When the no one touches the metal guard TP of fan, 555 ground mass circuit, 3 pin output low levels, transistor BG1 conducting, control bidirectional triode thyristor CT conducting, thus there is electric current to pass through fan motor DJ, make the DJ rotation, its rotational speed depends on the voltage at DJ two ends.This voltage is controlled by the CT angle of flow again.Adjust potentiometer W and can change the size of the angle of flow, thereby can change the size of air quantity of fan.If when having the people to touch fan metal guard TP, then 555 pin are exported high level, transistor BG1 pipe is ended, force control bidirectional triode thyristor CT to end, thereby make the fan stall, 3 pin also make transistor BG2 conducting simultaneously, trigger the intergrated circuit work of barking, and its output signal promotes loudspeaker Y and sends the sound of barking after transistor BG3 amplifies.When hand left the metal guard, after the time lag of R2C1,555 upsets resetted, 3 pin output low levels, thus fan begins proper functioning.In addition, when making, should notice that the metal guard of fan and fuselage will have good insulating properties.
This circuit has been realized the protection and the warning of electric fan cleverly; especially what is interesting is: when child's hand touched the metal guard, fan also sent the sound of barking for a moment immediately dead electricity the time, did not go to touch with the warning child; when hand leaves the metal guard after several seconds, the electric fan unlatching of sending a telegram in reply automatically.
Claims (5)
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 that is connected with 555 ground mass circuit, the acoustic simulation circuit of barking that is connected with 555 ground mass circuit provides the power circuit of stable operating voltage for 555 ground mass circuit, non-contact switch circuit and the acoustic simulation circuit of barking.
2. electric fan according to claim 1 refers to touch warning device, it is characterized in that: described 555 ground mass circuit comprise NE555IC1, resistance R 1, R2 and capacitor C 1, C2; The end of R1 and 2 pin of NE555IC1 are connected, the other end is connected with 4,8 pin of NE555IC1 simultaneously, and the end of R2 is connected with 6,7 pin of NE555IC1 simultaneously, and the other end is connected with 4,8 pin simultaneously, the end of C1 is connected with 2,6,7 pin of NE555IC1 simultaneously, and the other end is by C2 and NE555IC1
-5 pin connect, 2 pin of NE555IC1 and the metal covering TP of fan contact.
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 R 5, capacitor C 3 and adjusts potentiometer W; W is connected between the G utmost point of the collector electrode of BG1 and CT, is connected in parallel on the two ends of W after R5, the C3 series connection; Non-contact switch circuit is connected by the base stage of BG1 and 3 pin of NE555IC1.
4. electric fan according to claim 1 refers to touch warning device, it is characterized in that: the described acoustic simulation circuit of barking comprises intergrated circuit NS5608IC2, transistor BG2, BG3, resistance R 5 and loudspeaker Y; The input pin of NS5608IC2 is connected with the emitter of BG2, and R5 in parallel between input pin and the VSS pin, VDD pin are connected to the collector electrode of BG2 and the end of Y simultaneously; The base stage of output pin and BG3 is connected, and the collector electrode of BG3 is connected with the other end of Y, and the VSS pin of emitter and NS5608IC2 is connected; The acoustic simulation circuit of barking is connected by 3 pin of resistance R 3 and NE555IC1.
5. electric fan according to claim 1 refers to touch warning device, it is characterized in that: described power circuit comprises transformer B, fan motor DJ, bridge rectifier D 1～D4, reference diode DW and capacitor C 5; The once end of B is connected with outside 220V ac power supply, and secondary terminals connects the input end of D1～D4, is connected between the output terminal of D1～D4 after C5, the DW parallel connection; The first side of B is connected with T1, the T2 utmost point of CT in the non-contact switch circuit by motor D J in the power circuit; The output terminal of bridge rectifier D1～D4 connects 1,8 pin of NE555IC1 in the 555 ground mass circuit in the power circuit; Output terminal in the power circuit among bridge rectifier D1～D4 is connected with VDD, the VSS pin of NS5608IC2 in the acoustic simulation circuit of barking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102628921A CN102094843A (en) | 2009-12-14 | 2009-12-14 | Finger contact protecting and alarming device for electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102628921A CN102094843A (en) | 2009-12-14 | 2009-12-14 | Finger contact protecting and alarming device for electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102094843A true CN102094843A (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102628921A Pending CN102094843A (en) | 2009-12-14 | 2009-12-14 | Finger contact protecting and alarming device for electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102094843A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760803A (en) * | 2014-02-07 | 2014-04-30 | 深圳芯邦科技股份有限公司 | Control method, microprocessor, capacitive touch chip and electronic device |
| 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 |
-
2009
- 2009-12-14 CN CN2009102628921A patent/CN102094843A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760803A (en) * | 2014-02-07 | 2014-04-30 | 深圳芯邦科技股份有限公司 | Control method, microprocessor, capacitive touch chip and electronic device |
| CN103760803B (en) * | 2014-02-07 | 2016-06-29 | 深圳芯邦科技股份有限公司 | Control method, microprocessor, capacitance touching control chip and electronic equipment |
| 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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| C06 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110615 |