CN205091895U - Classroom detecting light intensity eyeshield alarm - Google Patents
Classroom detecting light intensity eyeshield alarm Download PDFInfo
- Publication number
- CN205091895U CN205091895U CN201520898845.7U CN201520898845U CN205091895U CN 205091895 U CN205091895 U CN 205091895U CN 201520898845 U CN201520898845 U CN 201520898845U CN 205091895 U CN205091895 U CN 205091895U
- Authority
- CN
- China
- Prior art keywords
- resistance
- classroom
- pin
- diode
- electric capacity
- 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.)
- Expired - Fee Related
Links
Landscapes
- Measurement Of Radiation (AREA)
Abstract
The utility model discloses a classroom detecting light intensity eyeshield alarm, including resistance R3, optical coupler IC1, electric capacity C1 and buzzer B, electric capacity C1's one end linked switch S1, resistance R1, resistance R2 and resistance R3, switch S1's the other end VCC that connects, optical coupler IC1's pin 1 is connected to resistance R3's the other end, and triode V1's projecting pole, optical coupler IC1's pin 2 and optical coupler IC1's pin 4 are connected to electric capacity C1's the other end. The utility model discloses classroom detecting light intensity eyeshield alarm simple structure, components and parts are few, utilize and constitute the detecting light intensity component in photo resistance and the optical coupling, and the break -make through the control triode reaches the purpose of opening the buzzer and reporting to the police, in case the light intensity is less than the setting value and will sends the chimes of doom in the classroom in, the warning student turns on light to consequently effectively prevent myopia, have small, convenient to use and the strong advantage of interference immunity.
Description
Technical field
The utility model relates to a kind of alarm, specifically a kind of classroom light-intensity test eyeshield alarm.
Background technology
Illumination in classroom is the important power equipment in campus, be directly connected to the efficiency of used by students during reading study, the rate of myopia of current China student raises year by year, reason is greatly had just to be the attention degree of light intensity inadequate, study of reading a book under being in the environment of insufficient light for a long time causes, therefore the light intensity detector of inside, classroom seems particularly important, this electronic equipment is not all assembled in current most of campus, reason is that most of light intensity detector volume is large, it is inconvenient to use, and therefore needs to be improved.
Utility model content
The purpose of this utility model is to provide a kind of classroom light-intensity test eyeshield alarm, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of classroom light-intensity test eyeshield alarm, comprise resistance R3, photo-coupler IC1, electric capacity C1 and hummer B, one end connecting valve S1 of described electric capacity C1, resistance R1, resistance R2 and resistance R3, the other end of switch S 1 connects power supply VCC, the other end of resistance R3 connects the pin 1 of photo-coupler IC1, the emitter of the other end connecting triode V1 of electric capacity C1, the pin 2 of photo-coupler IC1 and the pin 4 of photo-coupler IC1, the other end of resistance R1 connects the negative electrode of diode D1, the base stage of triode V1 and the pin 3 of photo-coupler IC1, the other end of resistance R2 connects the anode of diode D1, the anode of diode D2, hummer B, the negative electrode of diode D2 connects the other end of hummer B and the collector of triode V1, the model of described photo-coupler IC1 is 4N25.
As preferred version of the present utility model: described diode D1 is red light-emitting diode, diode D2 is green light LED.
As preferred version of the present utility model: described resistance R3 is photoresistance.
Compared with prior art, the beneficial effects of the utility model are: the utility model classroom light-intensity test eyeshield alarm arrangement is simple, components and parts are few, utilize in photoresistance and optically-coupled and form light-intensity test element, the object of opening buzzer warning is reached by the break-make controlling triode, once light intensity will send chimes of doom lower than setting value in classroom, remind student to turn on light, thus effectively prevent myopia, therefore there is the advantage of little, the easy to use and strong interference immunity of volume.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of classroom light-intensity test eyeshield alarm.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of classroom light-intensity test eyeshield alarm, comprises sensors A, relay J, potentiometer RP1 and chip IC 1, one end of described resistance R1 connects electric capacity C1, transient voltage suppressor diode DW, projector A and 220V line voltage, the other end of resistance R1 connects the other end of electric capacity C1, the anode of diode D1 and the negative electrode of diode D3, the other end of projector A connects a central electrode of bidirectional thyristor Q1, another central electrode of bidirectional thyristor Q1 connects the other end of 220V line voltage and the other end of transient voltage suppressor diode DW, and the negative electrode of diode D1 connects electric capacity C2, electric capacity C3, the negative electrode of diode D4, the pin 4 of chip IC 1 and the pin 8 of chip IC 1, the control pole of bidirectional thyristor Q1 connects the negative electrode of diode D2, the other end of the anode contact resistance R2 of diode D2, resistance R2 connects the pin 3 of chip IC 1, and the pin 6 of chip IC 1 connects the pin 2 of chip IC 1, the other end of electric capacity C2 and resistance R3, the anode of diode D3 connects electric capacity C4, the other end of resistance R3, the other end of electric capacity C3, the anode of diode D4 and the pin 1 of chip IC 1, the model of described chip IC 1 is NE555.
Described diode D2 is light emitting diode.Described resistance R3 is photoresistance.
Principle of work of the present utility model is: photoresistance R3 is a kind of photosensitive element. its resistance changes according to strong and weak change with ambient light.When bright and clear, the resistance of R3 is less, therefore photo-coupler IC1 conducting, and the light emitting diode of its inside is lit, inner photosensitive triode ON, and green LED D2 is lit; Now, the current potential of V1 base stage reduces and ends, and red light emitting diodes D2 is in extinguishing shape. and the hummer B in parallel with light emitting diode D2 is also in noiseless shape.When insufficient light, contrary with above-mentioned condition, the dividing potential drop on the larger .R3 of resistance of R3 is also larger.Photo-coupler IC1 is not enough to conducting, and V1 ends, and green LED D1 extinguishes; Now, the higher and conducting of the current potential of V1 base stage, red light emitting diodes D2 is lit, and hummer B emits beam not enough prompting sound.
Claims (3)
1. a classroom light-intensity test eyeshield alarm, comprise resistance R3, photo-coupler IC1, electric capacity C1 and hummer B, it is characterized in that, one end connecting valve S1 of described electric capacity C1, resistance R1, resistance R2 and resistance R3, the other end of switch S 1 connects power supply VCC, the other end of resistance R3 connects the pin 1 of photo-coupler IC1, the emitter of the other end connecting triode V1 of electric capacity C1, the pin 2 of photo-coupler IC1 and the pin 4 of photo-coupler IC1, the other end of resistance R1 connects the negative electrode of diode D1, the base stage of triode V1 and the pin 3 of photo-coupler IC1, the other end of resistance R2 connects the anode of diode D1, the anode of diode D2, hummer B, the negative electrode of diode D2 connects the other end of hummer B and the collector of triode V1, the model of described photo-coupler IC1 is 4N25.
2. a kind of classroom light-intensity test eyeshield alarm according to claim 1, it is characterized in that, described diode D1 is red light-emitting diode, and diode D2 is green light LED.
3. a kind of classroom light-intensity test eyeshield alarm according to claim 1, it is characterized in that, described resistance R3 is photoresistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898845.7U CN205091895U (en) | 2015-11-12 | 2015-11-12 | Classroom detecting light intensity eyeshield alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898845.7U CN205091895U (en) | 2015-11-12 | 2015-11-12 | Classroom detecting light intensity eyeshield alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205091895U true CN205091895U (en) | 2016-03-16 |
Family
ID=55482561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520898845.7U Expired - Fee Related CN205091895U (en) | 2015-11-12 | 2015-11-12 | Classroom detecting light intensity eyeshield alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205091895U (en) |
-
2015
- 2015-11-12 CN CN201520898845.7U patent/CN205091895U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204466718U (en) | A kind of safe and reliable high pressure Mouse killing trap | |
| CN205091895U (en) | Classroom detecting light intensity eyeshield alarm | |
| CN204887585U (en) | Turn over and swash formula LED drive circuit | |
| CN204741597U (en) | Dual supply LED light | |
| CN204929328U (en) | Energy -conserving LED of reputation | |
| CN206118132U (en) | Gate illumination LED control circuit | |
| CN205430723U (en) | Intelligence constant current LED drive circuit | |
| CN204652748U (en) | A kind of LED drive circuit | |
| CN209676546U (en) | A kind of infrared control light switch circuit and switch | |
| CN104427686A (en) | Lamp and control circuit thereof | |
| CN203329358U (en) | Remote control car warning lamp circuit | |
| CN107221132A (en) | A kind of light-metering warning circuit for sight protectio | |
| CN203289709U (en) | An illumination control device | |
| CN204859655U (en) | LED breathes lamp circuit | |
| CN204539593U (en) | A kind of Light control road lamp | |
| CN202303027U (en) | Automatic illuminating lamp for book cabinet | |
| CN203675378U (en) | Constant current driving LED circuit | |
| CN203884054U (en) | A portable emergency LED energy saving fluorescent lamp | |
| CN205648080U (en) | LED white light lamp control circuit | |
| CN210641101U (en) | Water lamp | |
| CN103458552A (en) | LED lamp and start control circuit thereof | |
| CN204795784U (en) | Luminous menu board control circuit | |
| CN205454150U (en) | LED intelligence electrical source controller | |
| CN204859662U (en) | LED constant -current drive circuit | |
| CN208476397U (en) | Light luminance detector towards sight protectio |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160316 Termination date: 20161112 |