CN209678359U - A kind of automatic hand dryer - Google Patents
A kind of automatic hand dryer Download PDFInfo
- Publication number
- CN209678359U CN209678359U CN201920122919.6U CN201920122919U CN209678359U CN 209678359 U CN209678359 U CN 209678359U CN 201920122919 U CN201920122919 U CN 201920122919U CN 209678359 U CN209678359 U CN 209678359U
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- China
- Prior art keywords
- circuit
- electromagnetic relay
- single chip
- stc89c52 single
- connect
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Abstract
The utility model discloses a kind of automatic hand dryers, it include STC89C52 single chip, infrared photoelectric switch, relay circuit, hair dryer circuit and the display circuit connecting respectively with STC89C52 single chip, infrared photoelectric switch select infrared ray scattered reflection type optoelectronic switch.The utility model realizes control using STC89C52 single chip, has many advantages, such as that high reliablity, performance are good, stability is high, the speed of service is fast；The setting of utility model works time is by LCD1602 liquid crystal display real-time display；The utility model by infrared photoelectric switch incude both hands close and leave it is logical, to realize automatic starting and close；The utility model is additionally provided with hair dryer circuit, can be more humanized and more energy efficient according to the variation of weather temperature, unrestricted choice cold wind or hot wind.
Description
Technical field
The utility model relates to High Voltage Circuit Breaker, specifically a kind of automatic hand dryer.
Background technique
It is well known that environmental protection is one of most concerned topic of contemporary people, then, a hommization, it is convenient, intelligence from
Dynamic hand dryer has important role to people's quality of life is improved, and let us feels pleasant during use.Automatic dry hand
Device development prospect is good, it can effectively control the diffusion of germ, and automatic hand dryer has health, intelligence, environmental protection, stabilization
The features such as.Existing hand dryer mostly uses greatly 555 timers and digital integrated electronic circuit, it may appear that job stability is not high, electromagnetism
More serious, the disadvantages of discrete component is more and not humanized enough is interfered, feasibility is not strong.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of automatic hand dryers, are realized using STC89C52 single chip
The advantages of there is performance to stablize for control, electromagnetism interference.
The technical solution of the utility model are as follows:
A kind of automatic hand dryer includes STC89C52 single chip, the infrared ray connecting respectively with STC89C52 single chip
Optoelectronic switch, relay circuit, hair dryer circuit and display circuit, the infrared photoelectric switch select infrared ray diffusing reflection
Type optoelectronic switch；The relay circuit includes NPN triode Q1 and electromagnetic relay JDQ1, the STC89C52 mono-
Piece machine is connect by NPN triode Q1 with one end of electromagnetic relay JDQ1 coil, the other end of electromagnetic relay JDQ1 coil
Ground connection, one end of the contact electromagnetic relay JDQ1 are connect with the positive pole of hair dryer driving motor MG1, electromagnetic relay JDQ1
The other end of contact connects power supply, the power cathode ground connection of hair dryer driving motor MG1；The hair dryer circuit includes
There is the hot wind being separately connected with STC89C52 single chip to start switch, cold wind starts switch and heating starting circuit, the electricity
Thermal starting circuit includes NPN triode Q2, electromagnetic relay JDQ2 and heater strip, and the STC89C52 single chip passes through
NPN triode Q2 is connect with one end of electromagnetic relay JDQ2 coil, the other end ground connection of electromagnetic relay JDQ2 coil, electromagnetism
One end of the contact relay JDQ2 and one end of heater strip connect, the other end connection power supply electricity of the contact electromagnetic relay JDQ2
Source, the other end ground connection of heater strip.
Reset circuit, clock circuit and power supply are also connected in the STC89C52 single chip, to form list
The minimum system of piece machine.
The display circuit selects LCD1602 LCD MODULE.
The advantages of the utility model:
The utility model realizes control using STC89C52 single chip, and with high reliablity, performance is good, stability is high, fortune
The advantages that scanning frequency degree is fast；The setting of utility model works time is by LCD1602 liquid crystal display real-time display；The utility model
By infrared photoelectric switch incude both hands close and leave it is logical, to realize automatic starting and close；The utility model is also
It is provided with hair dryer circuit, can be according to the variation of weather temperature, unrestricted choice cold wind or hot wind, more hommization, and more save
Energy.
Detailed description of the invention
Fig. 1 is the structural block diagram of the utility model.
Fig. 2 is the circuit diagram of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
See that Fig. 1 and Fig. 2, a kind of automatic hand dryer include STC89C52 single chip U1, respectively with STC89C52 single chip
Infrared photoelectric switch U2, relay circuit 3, hair dryer circuit 4 and the display circuit 5 of U1 connection, infrared photoelectric switch U2
Infrared ray scattered reflection type optoelectronic switch is selected, display circuit 5 selects LCD1602 LCD MODULE U3；
Relay circuit 3 includes NPN triode Q1 and electromagnetic relay JDQ1, and STC89C52 single chip passes through NPN tri-
Pole pipe Q1 is connect with one end of electromagnetic relay JDQ1 coil, the other end ground connection of electromagnetic relay JDQ1 coil, electromagnetism relay
One end of the contact device JDQ1 is connect with the positive pole of hair dryer driving motor MG1, the other end of the contact electromagnetic relay JDQ1
Connect power supply, the power cathode ground connection of hair dryer driving motor MG1；
Hair dryer circuit include that the hot wind being separately connected with STC89C52 single chip starts switch, cold wind starts switch and
Heating starting circuit, electric heating start-up circuit include NPN triode Q2, electromagnetic relay JDQ2 and heater strip PJ, STC89C52
Single-chip microcontroller is connect by NPN triode Q2 with one end of electromagnetic relay JDQ2 coil, electromagnetic relay JDQ2 coil it is another
End ground connection, one end of the contact electromagnetic relay JDQ2 connect with one end of heater strip PJ, the contact electromagnetic relay JDQ2 it is another
End connection power supply, the other end ground connection of heater strip PJ.
Wherein, it is also connected with reset circuit, clock circuit and power supply on STC89C52 single chip U1, to form list
The minimum system of piece machine.
Reset circuit includes electrolytic capacitor C1 and resistance R3, the anode connection power supply VCC of electrolytic capacitor C1, resistance
One end of R3 is grounded, and the cathode of electrolytic capacitor C1, the other end pin 9 corresponding with STC89C52 single chip U1 of resistance R3 connect
It connects.
Clock circuit includes capacitor C3, capacitor C4 and crystal oscillator Y1, one end of capacitor C3 and crystal oscillator Y1
One end with STC89C52 single chip U1 built in the input terminal XTAL1 of inverting amplifier connect, one end of capacitor C4 and crystal
The other end of oscillator Y1 with STC89C52 single chip U1 built in the output end XTAL2 of inverting amplifier connect, capacitor C3's
The other end of the other end and capacitor C4 are grounded.
Working principle of the utility model is:
When the infrared ray that infrared photoelectric switch U2 collects user emits signal, STC89C52 single chip U1 is given
The base stage of NPN triode Q1 exports high level, and NPN triode Q1 conducting, electromagnetic relay JDQ1, which is powered, to be closed, hair dryer driving
Motor MG1 energization starting outlet air carries out dry hand；User according to the usage requirement, press hot wind start switch or cold wind starting open
It closes, hot wind starts switch when pressing, and STC89C52 single chip U1 exports high level, NPN triode to the base stage of NPN triode Q2
Q2 conducting, electromagnetic relay JDQ2, which is powered, to be closed, and heater strip PJ, which is powered, starts heating, is realized hot air drying hand, is opened when pressing cold wind
Dynamic switch, STC89C52 single chip U1 export low level to the base stage of NPN triode Q2, and NPN triode Q2 is disconnected, and heater strip is not
Work；When hot wind, which starts switch, to be pressed, only when the infrared photoelectric switch U2 infrared ray for collecting user emits signal
When, STC89C52 single chip U1 exports high level to the base stage of NPN triode Q2, makes when infrared photoelectric switch U2 is not acquired
When the infrared ray of user emits signal, STC89C52 single chip U1 gives the base stage of NPN triode Q2 to export low level always.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (3)
1. a kind of automatic hand dryer, it is characterised in that: include STC89C52 single chip, connect respectively with STC89C52 single chip
Infrared photoelectric switch, relay circuit, hair dryer circuit and display circuit, the infrared photoelectric switch is selected infrared
Line scattered reflection type optoelectronic switch；The relay circuit includes NPN triode Q1 and electromagnetic relay JDQ1, described
STC89C52 single chip is connect by NPN triode Q1 with one end of electromagnetic relay JDQ1 coil, electromagnetic relay JDQ1 line
The other end of circle is grounded, and one end of the contact electromagnetic relay JDQ1 is connect with the positive pole of hair dryer driving motor MG1, electromagnetism
The other end of the contact relay JDQ1 connects power supply, the power cathode ground connection of hair dryer driving motor MG1；The electricity is blown
Wind-powered electricity generation road includes that the hot wind being separately connected with STC89C52 single chip starts switch, cold wind starts switch and heating starting electricity
Road, the heating starting circuit include NPN triode Q2, electromagnetic relay JDQ2 and heater strip, the STC89C52
Single-chip microcontroller is connect by NPN triode Q2 with one end of electromagnetic relay JDQ2 coil, electromagnetic relay JDQ2 coil it is another
End ground connection, one end of the contact electromagnetic relay JDQ2 and one end of heater strip connect, the other end of the contact electromagnetic relay JDQ2
Connect power supply, the other end ground connection of heater strip.
2. a kind of automatic hand dryer according to claim 1, it is characterised in that: also connect in the STC89C52 single chip
It is connected to reset circuit, clock circuit and power supply, to form the minimum system of single-chip microcontroller.
3. a kind of automatic hand dryer according to claim 1, it is characterised in that: the display circuit selects LCD1602
LCD MODULE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920122919.6U CN209678359U (en) | 2019-01-24 | 2019-01-24 | A kind of automatic hand dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920122919.6U CN209678359U (en) | 2019-01-24 | 2019-01-24 | A kind of automatic hand dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209678359U true CN209678359U (en) | 2019-11-26 |
Family
ID=68599922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920122919.6U Expired - Fee Related CN209678359U (en) | 2019-01-24 | 2019-01-24 | A kind of automatic hand dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209678359U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114468823A (en) * | 2022-02-21 | 2022-05-13 | 安徽理工大学 | Automatic hand dryer based on single chip microcomputer |
-
2019
- 2019-01-24 CN CN201920122919.6U patent/CN209678359U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114468823A (en) * | 2022-02-21 | 2022-05-13 | 安徽理工大学 | Automatic hand dryer based on single chip microcomputer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191126 Termination date: 20210124 |