CN208476397U - Light luminance detector towards sight protectio - Google Patents
Light luminance detector towards sight protectio Download PDFInfo
- Publication number
- CN208476397U CN208476397U CN201821230106.0U CN201821230106U CN208476397U CN 208476397 U CN208476397 U CN 208476397U CN 201821230106 U CN201821230106 U CN 201821230106U CN 208476397 U CN208476397 U CN 208476397U
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- Prior art keywords
- resistance
- time base
- light
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Abstract
The utility model discloses a kind of light luminance detector towards sight protectio.Tool housing is internally provided with electronic component, 8 feet of 555 time base circuits in the electronic component are connected with by power switch with power supply VCC 6V, 8 feet of 555 time base circuits also with alarm module, LCD display module is connected, 2 feet and 6 feet of 555 time base circuits connect photo resistance one end, the fixing end of variable number resistance, the photo resistance other end is connected with LCD display module, 1 foot of 555 time base circuits, the adjustable end of variable number resistance and the cathode of green light are grounded, the anode of green light by second resistance respectively with 3 feet of 555 time base circuits, red light cathode is connected, red light anode is connected by resistance with alarm module.The utility model has positive effect to pre- myopia prevention, and whether the brightness of illumination that also can detecte lamps and lanterns reaches standard requirements.
Description
Technical field
The utility model relates to sight protectio technical fields, and in particular to a kind of light luminance towards sight protectio
Detector.
Background technique
The rate of myopia of present students in middle and primary schools is relatively high, and how to protect eye eyesight is that parent, student and school all close very much
The problem of note.Student eyesight decline a major reason be learn in the insufficient eye-using environment of light intensity the long period with
It reads.Based on above consideration, the utility model devises a kind of light luminance detector towards sight protectio, when light is strong
Inadequate alarm is spent, so that student be reminded to change the light intensity of eye-using environment to reach the standard value for using eye health requirements.
Utility model content
In view of the shortcomings of the prior art, the utility model aims to provide a kind of light towards sight protectio
Line brightness detection instrument learns prevention student under the inadequate environment of intensity of illumination and myopia is caused to have positive meaning, meanwhile,
Can also be with indoors and when outdoor lighting engineering construction, whether the brightness of illumination for detecting mounted lamp reaches standard requirements.
To achieve the goals above, the utility model is achieved through the following technical solutions: towards sight protectio
Light luminance detector, including tool housing and electronic component, tool housing are internally provided with electronic component, the electricity
Sub- component includes 555 time base circuits, LCD display module, alarm module, first resistor, second resistance, photo resistance, can be changed
Digital resistance, red light, green light and tool housing, 8 feet of 555 time base circuits are connected with by power switch with power supply VCC 6V,
8 feet of 555 time base circuits are also connected with alarm module, LCD display module, and 2 feet and 6 feet of 555 time base circuits connect photo resistance
One end, variable number resistance fixing end, the photo resistance other end is connected with LCD display module, 1 foot of 555 time base circuits, can
The cathode at the adjustable end and green light that become digital resistance is grounded, and the anode of green light is electric with base when 555 respectively by second resistance
3 feet, the red light cathode on road are connected, and red light anode is connected by resistance with alarm module；The 555 time base circuit models
NE555。
Preferably, the photo resistance model LXD5537.
Preferably, the variable number resistance model DS3902.
Preferably, the alarm module uses buzzer, model SUN-12095-5.
Preferably, the red light, green light are light emitting diode, model LNJ326W83RA.
The utility model has the following beneficial effects: the threshold value of (1) light intensity can need to be adjusted according to detection；
(2) alarm uses light emitting diode and buzzer (while having vision and auditory effect)；(3) there is one between threshold value TH- and TH+
Intermediate zone indicates light intensity still (red and green LED is bright simultaneously)；(4) power switch, instrument have been done
Power supply can be closed when not used to save the electric energy of battery；(5) numerical value of light intensity, ocular and clear are shown with LCD；(6) have
There is voice alarm function；(7) different applications needs different light intensity standard values, can increase light in the instrument
The default and memory function of strength standard value (threshold value).
Detailed description of the invention
It is described in detail the utility model with reference to the accompanying drawings and detailed description；
Fig. 1 is the circuit diagram of the utility model；
Fig. 2 is the operation instruction schematic diagram of the utility model.
Specific embodiment
To be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below
In conjunction with specific embodiment, the utility model is further described.
Referring to Fig.1, present embodiment uses following technical scheme: the light luminance detector towards sight protectio,
Including tool housing and electronic component, tool housing is internally provided with electronic component, and the electronic component includes 555
Time base circuit U1, LCD display module U2, alarm module U3, first resistor R1, second resistance R2, photo resistance R3, variable number
Resistance Rp, red light LED1, green light LED2 and tool housing, 8 feet of 555 time base circuit U1 with pass through power switch S1 and power supply
VCC 6V is connected, and 8 feet of 555 time base circuit U1 are also connected with alarm module U3, LCD display module U2,555 time base circuit U1's
2 feet and 6 feet connect the fixing end of the one end photo resistance R3, variable number resistance Rp, the photo resistance R3 other end and LCD display module
U2 is connected, and 1 foot, the adjustable end of variable number resistance Rp and the cathode of green light LED2 of 555 time base circuit U1 is grounded, green light
The anode of LED2 is connected with 3 feet of 555 time base circuit U1, red light LED1 cathode respectively by second resistance R2, and red light LED1 is just
Pole is connected by resistance R1 with alarm module U3；The 555 time base circuit U1 model NE555.
It is worth noting that, the photo resistance R3 model LXD5537.
It is worth noting that, the variable number resistance Rp model DS3902.
It is worth noting that, the alarm module U3 uses buzzer, model SUN-12095-5.
In addition, the red light LED1, green light LED2 are light emitting diode, model LNJ326W83RA.
As shown in Fig. 2, the instrument of present embodiment is able to detect the light intensity of student's eye-using environment, when bright journey
Instrument just will call the police (the luminous buzzer call simultaneously of red light emitting diodes) when degree is lower than threshold value (TH-) of design；Work as light
When degree reaches the standard value (threshold value TH+) of setting or more, green LED shines, and buzzer does not pipe.
This instrument learns prevention student under the inadequate environment of intensity of illumination and myopia is caused to have positive meaning.Together
When, it can also be with indoors and when outdoor lighting engineering construction, whether the brightness of illumination for detecting mounted lamp reaches standard requirements.
Main component in the instrument of present embodiment is a photo resistance, and resistance value can be strong with light
It spends and changes (resistance value is small when light is strong otherwise resistance value is big), photo resistance is divided with a potentiometer, gained voltage input to 555
Time base circuit, the output driving light emitting diode and buzzer of 555 time base circuits.
This instrumentation method is as follows: first according to functional requirement design schematic diagram, determining the electronics member needed in circuit
Device.Then, it is determined that the model of electronic component (light emitting diode, buzzer, 555 time base circuits etc.).Further according to use
The parameters such as direct current source value and light emitting diode, buzzer, the voltage of 555 time base circuits, electric current determine the resistance value of current-limiting resistance.
Next, have purchased electronic component and one verifying circuit is realized according to schematic diagram with the method for plug wire on bread board,
Practice have shown that verifying, circuit is working properly to have reached design requirement.Finally, electronic component is welded on circuit boards, and do
One easy shell.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (5)
1. the light luminance detector towards sight protectio, which is characterized in that including tool housing and electronic component, outside instrument
Shell is internally provided with electronic component, and the electronic component includes 555 time base circuits (U1), LCD display module (U2), report
Alert module (U3), first resistor (R1), second resistance (R2), photo resistance (R3), variable number resistance (Rp), red light
(LED1), green light (LED2) and tool housing, 8 feet of 555 time base circuits (U1) with pass through power switch (S1) and power supply VCC
6V is connected, and 8 feet of 555 time base circuits (U1) are also connected with alarm module (U3), LCD display module (U2), 555 time base circuits
(U1) 2 feet and 6 feet connect the fixing end of the one end photo resistance (R3), variable number resistance (Rp), photo resistance (R3) other end
It is connected with LCD display module (U2), 1 foot of 555 time base circuits (U1), the adjustable end of variable number resistance (Rp) and green light
(LED2) cathode is grounded, and the anode of green light (LED2) passes through 3 of second resistance (R2) respectively with 555 time base circuits (U1)
Foot, red light (LED1) cathode are connected, and red light (LED1) anode is connected by resistance (R1) with alarm module (U3)；Described 555
Time base circuit (U1) model NE555.
2. the light luminance detector according to claim 1 towards sight protectio, which is characterized in that the photosensitive electricity
Hinder (R3) model LXD5537.
3. the light luminance detector according to claim 1 towards sight protectio, which is characterized in that described can parameter
Word resistance (Rp) model DS3902.
4. the light luminance detector according to claim 1 towards sight protectio, which is characterized in that the alarm mould
Block (U3) uses buzzer, model SUN-12095-5.
5. the light luminance detector according to claim 1 towards sight protectio, which is characterized in that the red light
(LED1), green light (LED2) is light emitting diode, model LNJ326W83RA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821230106.0U CN208476397U (en) | 2018-08-01 | 2018-08-01 | Light luminance detector towards sight protectio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821230106.0U CN208476397U (en) | 2018-08-01 | 2018-08-01 | Light luminance detector towards sight protectio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208476397U true CN208476397U (en) | 2019-02-05 |
Family
ID=65209149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821230106.0U Expired - Fee Related CN208476397U (en) | 2018-08-01 | 2018-08-01 | Light luminance detector towards sight protectio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208476397U (en) |
-
2018
- 2018-08-01 CN CN201821230106.0U patent/CN208476397U/en not_active Expired - Fee Related
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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: 20190205 Termination date: 20190801 |