CN207799878U - Vision protection device for desk lamp and the desk lamp with the vision protection device - Google Patents
Vision protection device for desk lamp and the desk lamp with the vision protection device Download PDFInfo
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- CN207799878U CN207799878U CN201820056065.1U CN201820056065U CN207799878U CN 207799878 U CN207799878 U CN 207799878U CN 201820056065 U CN201820056065 U CN 201820056065U CN 207799878 U CN207799878 U CN 207799878U
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- Prior art keywords
- desk lamp
- illuminance
- controller
- protection device
- vision protection
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Abstract
The utility model is related to for desk lamp vision protection device and with the desk lamp of the vision protection device.A kind of vision protection device for desk lamp; the vision protection device includes sitting posture detection circuit, illuminance detection circuit, alarm and controller; sitting posture detection circuit is connected to controller, measures the distance between desk lamp and user and the distance between desk lamp and user are sent to controller；Illuminance detection circuit is connected to controller, detects the illuminance of desk lamp and the illuminance of desk lamp is sent to controller；Alarm is connected to controller, and alarm is sent out according to the control of controller；Outside the predetermined range, triggering alarm sends out alarm to illuminance of the controller in response to the distance between desk lamp and user less than predetermined value or in response to desk lamp.
Description
Technical field
The utility model is related to field of desk, and in particular to a kind of to be regarded for the vision protection device of desk lamp and with this
It tries hard to keep the desk lamp of protection unit.
Background technology
The rate of myopia ranking the second in the world in China at present, according to statistics, China's pupil's rate of myopia is up to 34.17%, middle school student
It is 56.59%, and the rate of myopia of graduate is up to 73.9%, teen-age visual problems are increasingly severe.Authority's research refers to
Go out, writes, the fault read, the excessively weak and too strong of light are the main reason for leading to myopia.If can be learnt
With work when ambient light illumination and sitting posture control protection eyesight optimum condition under, then will substantially reduce rate of myopia.
The brightness of traditional desk lamp be it is certain, cannot with the variation of ambient light adjust automatically；Eyesight at this stage is protected
Although the design of protection unit increases detection and warning function, but be not combined with desk lamp.
Utility model content
To solve the above-mentioned problems, have the utility model proposes one kind and brightness, detection use are adjusted according to ambient light
The vision protection device of the functions such as family sitting posture, sound-light alarm.
According to the utility model, a kind of vision protection device for desk lamp is provided, the vision protection device includes sitting
Appearance detection circuit, illuminance detection circuit, alarm and controller, sitting posture detection circuit are connected to controller, measure desk lamp with
The distance between desk lamp and user are simultaneously sent to controller by the distance between user；Illuminance detection circuit is connected to control
Device detects the illuminance of desk lamp and the illuminance of desk lamp is sent to controller；Alarm is connected to controller, according to controller
Control and send out alarm；Controller is in response to the distance between desk lamp and user less than predetermined value or in response to the light of desk lamp
Outside the predetermined range, triggering alarm sends out alarm to illumination.
Optionally, the vision protection device further includes display device, and the display device is connected to controller and from control
Device processed receives and the numerical value of the illuminance of display the distance between desk lamp and user or desk lamp.
Optionally, the vision protection device further includes mode selection button, user by the mode selection button come
Selection automatically regulates the illuminance or the manually illuminance of adjustable desk lamp of desk lamp.
Optionally, when user automatically regulates the illuminance of desk lamp by mode selection button selection, controller
The illuminance of desk lamp is maintained within the preset range.
Optionally, controller using the lasting length of cycle square wave high level come change be output to desk lamp analog voltage it is big
It is small, to control the illuminance of desk lamp.
Optionally, when selecting the manually illuminance of adjustable desk lamp by the mode selection button, controller is only rung
In the distance between desk lamp and user alarm should be sent out less than the predetermined value.
Optionally, the vision protection device further includes the illuminance increase button for the illuminance of manual adjustable desk lamp
Reduce button with illuminance.
Optionally, the predetermined value is 25 centimetres, and the preset range is 700 luxs to 1000 luxs.
Optionally, the alarm includes at least one of audio alarm and light alarm.
According to the utility model, a kind of desk lamp is provided, the desk lamp is equipped with the vision protection device.
Compared with prior art, vision protection device according to the present utility model makes desk lamp possess according to ambient light tune
Save the functions such as brightness, detection user sitting posture, sound-light alarm reduces rate of myopia to protect the eyesight of user.
Description of the drawings
By describing embodiment below in conjunction with the accompanying drawings, the above-mentioned and/or other objects and advantages of the utility model will become
It is clearer, wherein：
Fig. 1 shows the structure diagram of the vision protection device for desk lamp of embodiment according to the present utility model；
Fig. 2 shows the circuit diagrams of the illuminance detection circuit of embodiment according to the present utility model；
Fig. 3 shows the circuit diagram of the sitting posture detection circuit of embodiment according to the present utility model；
Fig. 4 shows the single-chip data acquisition of embodiment according to the present utility model and the circuit diagram of display circuit；
Fig. 5 shows the circuit diagram of the sound light alarming circuit of embodiment according to the present utility model；
Fig. 6 shows the operation processing of the vision protection device of embodiment according to the present utility model.
Specific implementation mode
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, below in conjunction with the accompanying drawings and have
Body embodiment is described in further detail the utility model.
Fig. 1 shows structural frames Figure 100 of the vision protection device for desk lamp of embodiment according to the present utility model.
The vision protection device for desk lamp may include sitting posture detection circuit 101, illuminance detection circuit 102, button 103, mould
Number converter (A/D) 104, controller 105, driving circuit 106, alarm 107 and display device 108.
As shown in Figure 1, sitting posture detection circuit 101 is connected to controller 105, and measure between desk lamp 109 and user
Then the distance between desk lamp 109 and user are sent to controller 105 by distance.Illuminance detection circuit 102 is connected to control
Device 105, and the illuminance of desk lamp 109 is detected, the illuminance of desk lamp 109 is then sent to controller 105.Alarm 107
It is connected to controller 105 by driving circuit 106, alarm is sent out according to the control of controller 105.Controller 105 can respond
Outside the predetermined range in the illuminance of the distance between desk lamp 109 and user less than predetermined value or in response to desk lamp 109, it touches
Hair alarm 107 sends out alarm.Display device 108 is connected to controller 105, and receives and show desk lamp 109 from controller 105
The numerical value of the illuminance of the distance between user or desk lamp 109.In one embodiment, the predetermined value can be 25 lis
Rice, the preset range can be 700 luxs (Lx) to 1000 luxs.Alarm 107 can make a sound alarm and light police
At least one of report.
Controller 105 may include but be not limited to microcontroller, ARM, FPGA etc..In one embodiment, the sight protectio
The controller of device can be STC90C516RD+ microcontrollers, and C language can be used and write target system software.Illuminance is examined
Slowdown monitoring circuit 102 monitoring of environmental illuminance and can be converted into electric signal in real time, and electric signal is then passed through analog-digital converter 104
It is transferred in controller 105.Button 103 may include mode selection button, to carry out the switching of automatic mode and manual mode.It presses
Key 103 may also include illuminance and increase button and illuminance reduction button, to realize the hand of the size to the illuminance of desk lamp 109
It is dynamic to adjust.
Fig. 2 shows the circuit diagrams 200 of the illuminance detection circuit 102 of embodiment according to the present utility model.Such as Fig. 2 institutes
Show, illuminance detection circuit 102 may include illuminance sensor (for example, silicon photocell etc.) and signal conditioning circuit.Signal tune
Reason circuit may include that operational amplifier, operational amplifier are filtered at amplification the electric signal obtained by illuminance sensor
Reason.In one embodiment, illuminance is converted into electric current output by illuminance detection sensor, and current range is about 0.1mA-
0.3mA.Then, circuit flows through stream voltage conversion circuit, converts electrical current into voltage and is amplified.Illuminance detection sensor
The relational expression of the output voltage U of output current I and operational amplifier is as follows：
U=500 × I (1)
The electric current that illuminance detection sensor generates is converted into voltage and by 500 times of the voltage amplification, the signal is subsequent
It is sent to analog-digital converter 104 and controller 105, to realize the acquisition and measurement of illuminance.
Fig. 3 shows the circuit diagram 300 of the sitting posture detection circuit of embodiment according to the present utility model.As shown in figure 3, sitting
HC-SR04 modules can be used in appearance detection circuit 101, and the module includes ultrasonic transmitter, receiver and control circuit.It is described
The basic functional principle of module is that I/O port TRIG triggers ranging, provides the high level signal of at least 10 μ s；Module sends 8 automatically
The square wave of 40KHz has detected whether signal return automatically；If there is signal returns, then one high electricity is exported by I/O port ECHO
Flat, which is exactly ultrasonic wave from the time for being emitted to return.
Sitting posture detection sensor and the calculation formula of the distance between user are as follows：
D=CT/2 (2)
Wherein, D is the distance between sitting posture detection sensor and user (unit：m)；C is the transmission of sound wave in the medium
Rate (unit：m/s)；T is the time difference (unit sent between the time and the time for receiving ultrasonic wave of ultrasonic wave：s).
In other embodiments, sitting posture detection sensor can also be infrared distance sensor or laser distance sensor
Deng.
Fig. 4 shows the single-chip data acquisition of embodiment according to the present utility model and the circuit diagram 400 of display circuit.
As shown in figure 4, in one embodiment, controller 105 can be used STC90C516RD+ microcontrollers, detection high level it is lasting when
Between (that is, ultrasonic wave from the time for being emitted to return), carry out calculation process and obtain distance.Display device 108 can be liquid crystal
Display screen (LCD), the LCD can display distance in real time.It is inputted by button 103 to determine desk lamp brightness regulation pattern, to light
The voltage value that illumination detection circuit 102 exports is sampled, and feeds back to the microcontroller, the monolithic by A/D converter 105
Machine is adjusted processing to voltage value, converts voltage value to corresponding illuminance.In addition, liquid crystal display can also be in real time
The ambient light illumination of display at this time.Controller 105 can be output to desk lamp using the lasting length of cycle square wave high level to change
109 analog voltage size, to control bright dark (that is, the size of illuminance) of desk lamp 109.
As shown in figure 4, A/D conversions can pass through the I of PCF85912C bus communications are realized.PCF8591 is a kind of with I2C
8 A/D conversion chips of bus interface and internal circuit always, in the message transmitting procedure with microcontroller, PCF8591 is only
Can realize that A/D is converted using clock line SCL and data line SDA, clock line SCL and data line SDA can respectively with microcontroller
P2.1 and P2.0 mouthfuls connection.In one embodiment, silicon photocell is subjected to mould by the voltage signal that opto-electronic conversion obtains
Number conversion, be read out by microcontroller and judged the size of the voltage signal, to obtain desk lamp illuminance size.
As shown in figure 4, provided with 4 mutually independent buttons (including " Automatic " button, " Manual " button,
"+" button and "-" button), wherein " Automatic " button and " Manual " button are for carrying out automatic mode and manually
The mode selection button of the switching of pattern, "+" button and "-" button are namely for realizing to the big of the illuminance of desk lamp 109
The small illuminance adjusted manually increases button and illuminance reduces button.As shown in figure 4, this four buttons respectively with microcontroller
P1.1-P1.4 mouths connection.In addition, LCD1602 liquid crystal displays can be used in liquid crystal display, between display user and desk lamp
Distance and ambient light illumination, D0-D7 mouthfuls of the data line of LCD1602 can by latch respectively with the P0.1-P0.7 of microcontroller
Mouth connection, the port RS, E of LCD1602 can be connect with P2.6 and 2.7 mouthful of microcontroller respectively.
In other embodiments, A/D converter 105 and display device 109 can also be that by its of similar functions
Its device.Mode selection button can also be single button, for example, the selection of pressing or bounce by the single button is adopted
Manual adjustment mode is still used with automatic adjustment pattern.In addition, the illuminance for manual adjustment mode increases button and light
Illumination reduces the control piece (for example, knob etc.) that button can also be other forms.
Fig. 5 shows the circuit diagram 500 of the sound light alarming circuit of embodiment according to the present utility model.As shown in figure 5, report
The sound light alarming circuit including light emitting diode and buzzer can be used in alert device 107.In one embodiment, it is examined when by sitting posture
When slowdown monitoring circuit measured distance value is less than given numerical value, a low level signal can be sent to sound light alarming circuit by controller 105,
At this point, triode can be switched on, buzzer can make a sound alarm, and light emitting diode can be lit, to remind the user of desk lamp
Adjust sitting posture.
In other embodiments, also can be used can realize other warning circuits of warning function, for example, utilizing loud speaker
It alarms.Alternatively, remind user in other ways by the sound light alarming circuit, for example, make LED flash or
Person makes buzzer play music.
Fig. 6 shows the operation processing 600 of the vision protection device of embodiment according to the present utility model.As described above,
The vision protection device may include that mode selection button, user can select to automatically regulate by the mode selection button
The illuminance of desk lamp 109 or the manually illuminance of adjustable desk lamp 109.When user is selected certainly by the mode selection button
When the illuminance of dynamic ground adjustable desk lamp 109, the illuminance of desk lamp 109 can be maintained at preset range (for example, 700 by controller 105
Lux to 1000 luxs) within, pulse width modulation (PWM) light regulating technology can be used in controller 105, passes through cycle square wave
The lasting length of high level is output to the analog voltage size of desk lamp 109 to change, to control the illuminance of desk lamp 109.Specifically
For, the duration of the high level is longer, and the analog voltage for being output to desk lamp 109 is bigger, then the illuminance of desk lamp 109 is got over
Greatly；The duration of the high level is shorter, and the analog voltage for being output to desk lamp 109 is smaller, then the illuminance of desk lamp 109 is got over
It is small.When selecting the manually illuminance of adjustable desk lamp 109 by the mode selection button, controller 105 can be only in response to
The distance between desk lamp 109 and user are less than predetermined value (for example, 25 centimetres) and send out alarm.
With reference to Fig. 6, when desk lamp 109 is opened, processing 600 starts from step 601.In step 602, controller 105 into
Row initialization.In step 603, the distance between user and desk lamp X are measured by sitting posture detection circuit 101.In step 604, lead to
Cross illuminance (that is, ambient light illumination) L that illuminance detection circuit 102 detects desk lamp.It is followed by subsequent processing 600 and proceeds to step 605,
In step 605, controller 105 judges whether the distance between user and desk lamp X are less than 25 centimetres.If determining X in step 605
Less than 25 centimetres, then handles 600 and proceed to step 606.In step 606, processing 600 makes alarm send out alarm, to remind platform
The user of lamp adjusts sitting posture.If determining that X is greater than or equal to 25 centimetres in step 605, processing 600 proceeds to step 607,
Step 607, the distance between user and desk lamp at this time are shown by display device.
After step 607, processing 600 proceeds to step 608, in step 608, button detection is carried out, in step 609
Determine whether " Manual " button is pressed.It is true in step 611 if determining that " Manual " button is pressed in step 609
Whether fixed " Automatic " button is pressed.If determining that " Manual " button is not pressed or in step in step 608
611 determination " Automatic " buttons are pressed, then desk lamp enters automatic adjustment pattern.If determined in step 611
" Automatic " button is not pressed, then desk lamp enters manual adjustment mode.
After entering automatic adjustment pattern, in step 610, whether processing 600 determines the illuminance L of desk lamp in 700 Le
Ke Si is between 1000 luxs.If determining the illuminance L of desk lamp in 700 luxs to 1000 Le in step 610 processing 600
Gram between this, then handles 600 and proceed to step 614, otherwise handle 600 and proceed to step 612.In step 614, processing 600 is protected
The illuminance for holding desk lamp is constant.In step 612, processing 600 determines whether the illuminance L of desk lamp is less than 700 luxs.If
Step 612 processing 600 determines that the illuminance L of desk lamp is less than 700 luxs, then handles 600 and proceed to step 616, otherwise handle
600 proceed to step 615.In step 615, processing 600 makes the illuminance of desk lamp reduce.In step 616, processing 600 makes desk lamp
Illuminance increase.
After entering manual adjustment mode, processing 600 determines "+" button (that is, illuminance increase button) in step 613
Whether it is pressed.If determining that "+" button is pressed in step 613, in step 620, processing 600 makes the illuminance of desk lamp increase
Greatly.If determining that "+" button is not pressed in step 613, "-" button (that is, illuminance reduction button) is determined in step 617
Whether it is pressed.If determining that "-" button is pressed in step 617, in step 618, processing 600 makes the illuminance of desk lamp subtract
It is small.If determining that "-" button is not pressed in step 617, in step 619, processing 600 makes the illuminance of desk lamp keep not
Become.After step 614,615,616,618,619 and 620, in step 621, current ambient lighting is shown by display device
It spends (that is, illuminance of desk lamp).After step 621, processing 600 returns to step 603.The constantly cycle of processing 600 carries out, directly
Until desk lamp is closed.
Compared with prior art, vision protection device according to the present utility model makes desk lamp possess according to ambient light tune
Save the functions such as brightness, detection user sitting posture, sound-light alarm reduces rate of myopia to protect the eyesight of user.
Embodiment in above-described embodiment can be further combined or replace, and embodiment is only to this practicality
Novel preferred embodiment is described, and is not defined to the conception and scope of the utility model, is not departing from this practicality
Under the premise of new design thought, various change and change that those skilled in the art make the technical solution of the utility model
Into belonging to the scope of protection of the utility model.
Claims (10)
1. a kind of vision protection device for desk lamp, which is characterized in that the vision protection device include sitting posture detection circuit,
Illuminance detection circuit, alarm and controller,
Sitting posture detection circuit is connected to controller, measures the distance between desk lamp and user and by the distance between desk lamp and user
It is sent to controller；
Illuminance detection circuit is connected to controller, detects the illuminance of desk lamp and the illuminance of desk lamp is sent to controller；
Alarm is connected to controller, and alarm is sent out according to the control of controller；
Illuminance of the controller in response to the distance between desk lamp and user less than predetermined value or in response to desk lamp is in predetermined model
Other than enclosing, triggering alarm sends out alarm.
2. vision protection device as described in claim 1, which is characterized in that the vision protection device further includes display dress
It sets, the display device is connected to controller and the light of the distance between desk lamp and user or desk lamp is received and shown from controller
The numerical value of illumination.
3. vision protection device as described in claim 1, which is characterized in that the vision protection device further includes model selection
Button, user select to automatically regulate the illuminance or manually adjustable desk lamp of desk lamp by the mode selection button
Illuminance.
4. vision protection device as claimed in claim 3, which is characterized in that when user is selected by the mode selection button
When automatically regulating the illuminance of desk lamp, the illuminance of desk lamp is maintained within the preset range by controller.
5. vision protection device as claimed in claim 4, which is characterized in that controller is lasting using cycle square wave high level
Length is output to the analog voltage size of desk lamp to change, to control the illuminance of desk lamp.
6. vision protection device as claimed in claim 3, which is characterized in that manual when being selected by the mode selection button
When the illuminance of ground adjustable desk lamp, controller sends out police only in response to the distance between desk lamp and user less than the predetermined value
Report.
7. vision protection device as claimed in claim 6, which is characterized in that the vision protection device further includes for manual
The illuminance of the illuminance of adjustable desk lamp increases button and illuminance reduces button.
8. vision protection device as described in claim 1, which is characterized in that the predetermined value is 25 centimetres, the predetermined model
It encloses for 700 luxs to 1000 luxs.
9. vision protection device as described in claim 1, which is characterized in that the alarm includes in audio alarm and light alarm
At least one.
10. a kind of desk lamp, which is characterized in that the desk lamp installation is protected just like the eyesight described in any one of claim 1-9
Protection unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820056065.1U CN207799878U (en) | 2018-01-12 | 2018-01-12 | Vision protection device for desk lamp and the desk lamp with the vision protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820056065.1U CN207799878U (en) | 2018-01-12 | 2018-01-12 | Vision protection device for desk lamp and the desk lamp with the vision protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207799878U true CN207799878U (en) | 2018-08-31 |
Family
ID=63271864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820056065.1U Expired - Fee Related CN207799878U (en) | 2018-01-12 | 2018-01-12 | Vision protection device for desk lamp and the desk lamp with the vision protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207799878U (en) |
-
2018
- 2018-01-12 CN CN201820056065.1U patent/CN207799878U/en not_active Expired - Fee Related
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| 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: 20180831 Termination date: 20210112 |