CN218416727U - Learning environment monitoring circuit based on photochromic resolution - Google Patents
Learning environment monitoring circuit based on photochromic resolution Download PDFInfo
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- CN218416727U CN218416727U CN202222188806.0U CN202222188806U CN218416727U CN 218416727 U CN218416727 U CN 218416727U CN 202222188806 U CN202222188806 U CN 202222188806U CN 218416727 U CN218416727 U CN 218416727U
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Abstract
The utility model discloses a study environment monitoring circuit based on photochromic resolution, it includes electrical unit, central control unit, photochromic recognition unit and dimming unit, electrical unit, photochromic recognition unit and dimming unit all with the central control unit electric connection; the power supply unit is used for supplying power to the central control unit, the light color identification unit and the dimming unit, the light color identification unit is used for collecting light color parameters of a reading surface of a user, and the central control unit is used for receiving the light color parameters of the light color identification unit, comparing the light color parameters with preset parameters, and controlling the dimming unit to adjust brightness, color temperature or color rendering index according to a comparison result. The current desk lamp can be preset in a factory, is set to be in a proper light color, cannot be adjusted after leaving the factory, and is in an optimal state in real time through light color identification and light color adjustment of the light color identification unit, so that a user is ensured to have an optimal learning environment, and the eyesight of the user is protected.
Description
Technical Field
The utility model belongs to the technical field of study lamp, eyesight protection and LED, concretely relates to learning environment monitoring circuit based on photochromic resolution of protection eyesight.
Background
The LED lamp for reading and learning at present only aims at the light management of equipment per se for the light control of the learning process of students and different learning environments, does not have the capacity of intelligent adjustment, and generally adapts to the light brightness of different learning environments by manual adjustment of a user in the learning process. For example, in the prior art, the light control is generally realized by detecting the brightness of indoor light and adjusting the brightness of an LED through an adjusting circuit.
However, most of the environmental factors influencing reading and learning include the following factors, namely air environment, noise environment, light environment and sitting posture. Therefore, if the user wants to effectively protect eyesight when reading and studying, the user needs to adjust the illumination angle besides the light brightness, so as to ensure that the study reading materials are in the illumination range of the study lamp, and the adjustment of the optimal illumination angle during studying is a more complicated problem than the adjustment of the brightness.
SUMMERY OF THE UTILITY MODEL
The following presents a simplified summary of embodiments of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that the following summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.
In order to solve the technical problem, the present application provides a learning environment monitoring circuit based on light color discrimination, which includes a power supply unit, a central control unit, a light color identification unit and a dimming unit, wherein the power supply unit, the light color identification unit and the dimming unit are electrically connected to the central control unit; the power supply unit is used for supplying power to the central control unit, the light color identification unit and the dimming unit, the light color identification unit is used for collecting light color parameters of a reading surface of a user, the central control unit is used for receiving the light color parameters of the light color identification unit, comparing the light color parameters with preset parameters, and controlling the dimming unit to adjust brightness, color temperature and color rendering index according to a comparison result so as to ensure that the user has the best learning environment and protect the eyesight of the user.
Preferably, the central control unit comprises a single chip microcomputer LQFP48 and a capacitor C2, a VDD pin of the single chip microcomputer LQFP48 is connected with a voltage of 3.3V, a RESET pin of the single chip microcomputer LQFP48 is connected with the capacitor C2 in series and then grounded, and an RX1 pin and a TX1 pin of the single chip microcomputer LQFP48 are connected with the light color identification unit.
The light color identification unit is used for collecting and identifying light color parameters such as the illumination and the color temperature of the reading surface light of the user, and the light color parameters can also comprise light color parameters such as a red coordinate value, a green coordinate value and a blue coordinate value of the reading surface light.
The light color identification unit comprises an illuminance sensor and a color temperature sensor. The light color identification unit may further include an RGB color sensing module as required. As a specific example, the photochromic recognition unit selects the XYZ color sensor TCS3430 (or TSC 34725), collects photochromic signals (color RGB values, color temperatures, and illumination intensities) of the reading surface in real time, and obtains XYZ color coordinate values and color temperatures of RGB colors through signal processing and conversion by the central control unit.
In order to cooperate with the light color identification unit to identify the light color of the reading surface, the light color identification unit further comprises a camera, and the camera is used for identifying the orientation of the reading surface of the user.
The photochromic recognition unit further comprises a rotary support for placing an illumination sensor and a driving motor for driving the rotary support to rotate, the driving motor is electrically connected with the central control unit, the central control unit judges the inclination of the learning reading surface through the received image signal of the camera, so that the driving motor is controlled to rotate the rotary support to the learning reading surface of a user to obtain the most accurate illumination angle, the detection device can obtain the accurate illumination angle along with different placement positions/angles of the learning reading materials, and the optimal color temperature and color rendering index of the dimming unit are adjusted by the accurate illumination angle.
Preferably, the rotating support comprises a supporting plate and a connecting piece, the supporting plate and the connecting piece are connected with each other, the illumination sensor is placed on the supporting plate, and the connecting piece is connected with an output shaft of the driving motor. In different learning environments, the orientation angle of the illumination sensor is kept consistent with the reading surface of a user, and the illumination light is sampled to obtain the light color parameters such as the illumination, the color temperature (and the red coordinate value, the green coordinate value and the blue coordinate value) and the like of the orientation surface.
The central control unit obtains the light color parameters of the user reading surface through the light color identification unit, compares the light color parameters with preset parameters, controls the light modulation unit to adjust the white light or the green light or the red light to the optimal brightness, color temperature and color rendering index according to the comparison result, and intelligently and dynamically adjusts the light modulation unit according to the learning environment of the user to adjust the light modulation unit to the optimal state.
Further preferably, the learning environment monitoring circuit further comprises an air quality detection unit, and the air quality detection unit is electrically connected with the central control unit.
Preferably, the air quality detection unit includes a photocoupler for photoelectric emission and reflection media, an operational amplifier for judgment and comparison, and an alarm unit for warning, the photocoupler is used for reflecting an emission waveform in an environment where air is not obstructed, the operational amplifier is used for comparing a value of a current emission waveform with a preset judgment and comparison threshold value, and if the value exceeds the threshold value, the alarm unit warns.
Further, the dimming unit comprises a first switch circuit and a first LED module which are connected with each other, a second switch circuit and a second LED module which are connected with each other, and a third switch circuit and a third LED module which are connected with each other; the first switch circuit, the second switch circuit and the third switch circuit are all connected to the central control unit, the central control unit controls the on-off ratio of the first switch circuit, the second switch circuit or the third switch circuit by outputting PWM waves with different duty ratios, and the average current of the first LED module, the second LED module or the third LED module connected with the central control unit is adjusted, so that dimming and color mixing are achieved.
The current desk lamp can only be preset in a factory, set in a proper light color and cannot be adjusted after leaving the factory, but in the practical application process, because the placement positions of the learning reading materials are different, the optimal illumination angles are different, the positions of the learning reading materials can be changed continuously when a user learns, and light can generate a comprehensive effect with any object with color reflection, so that the user cannot be ensured to be just adaptive to the set light color when using the desk lamp.
Drawings
The invention may be better understood by referring to the following description in conjunction with the accompanying drawings, in which like reference numerals are used to designate like or similar parts throughout the figures thereof. The accompanying drawings, which are incorporated in and form a part of this specification, illustrate preferred embodiments of the present invention and, together with the detailed description, serve to explain the principles and advantages of the invention. In the drawings:
fig. 1 is a schematic diagram of a learning environment monitoring circuit according to embodiment 1 of the present invention;
FIG. 2 is a schematic circuit diagram of a central control unit and a dimming unit of the learning environment monitoring circuit according to the present embodiment;
FIG. 3 is a schematic circuit diagram of a light color identification unit of the learning environment monitoring circuit according to the present embodiment;
FIG. 4 is a schematic circuit diagram of a power supply unit of the learning environment monitoring circuit of the present embodiment;
fig. 5 is a schematic diagram of a learning environment monitoring circuit according to embodiment 2 of the present invention.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings. Elements and features described in one drawing or one embodiment of the invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that the figures and description omit representation and description of components and processes known to those of ordinary skill in the art that are not pertinent to the present invention for the sake of clarity.
In the description of the present invention, it is to be understood that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
Example 1
Referring to fig. 1, the learning environment monitoring circuit based on light color discrimination of the present embodiment includes a power supply unit, a central control unit, a light color identification unit, and a dimming unit, where the power supply unit, the light color identification unit, and the dimming unit are all electrically connected to the central control unit; the power supply unit supplies power to the central control unit, the light color identification unit and the dimming unit, the light color identification unit is used for collecting light color parameters of a reading surface of a user, the central control unit is used for receiving the light color parameters of the light color identification unit, comparing the light color parameters with preset parameters, and controlling the dimming unit to adjust brightness, color temperature or color rendering index according to a comparison result so as to ensure that the user has the best learning environment and protect the eyesight of the user.
In this embodiment, referring to fig. 2, the central control unit includes a single chip microcomputer LQFP48 and a capacitor C2, a VDD pin of the single chip microcomputer LQFP48 is connected to a voltage of 3.3V, a RESET pin of the single chip microcomputer LQFP48 is connected in series with the capacitor C2 and then grounded, and an RX1 pin and a TX1 pin of the single chip microcomputer LQFP48 are connected to the light color identification unit.
In order to cooperate with the light color identification unit to identify the light color of the reading surface, the light color identification unit further comprises a camera, and the camera is used for identifying the orientation and the direction of the reading surface of the user.
In addition, photochromic recognition unit still including the runing rest of placing illuminance sensor and drive runing rest pivoted driving motor, driving motor with central control unit electric connection, central control unit judges the eager inclination of study reading face through the image signal of camera received to control driving motor and rotate the runing rest to user's study reading face, in order to obtain the most accurate illumination angle, this detection device that makes can be along with the locating position/the angle difference of study reading thing, obtain its accurate illumination angle thereby adjust the light modulating unit to best colour temperature and color rendering index.
During the actual preparation, runing rest can comprise a backup pad and a connecting piece, backup pad and connecting piece interconnect, place in the backup pad illumination sensor, connecting piece and driving motor's output shaft. In different learning environments, the orientation angle of the illumination sensor is kept consistent with the reading surface of a user, and the illumination light is sampled to obtain the light color parameters such as the illumination, the color temperature (and the red coordinate value, the green coordinate value and the blue coordinate value) and the like of the orientation surface.
Referring to fig. 3, in the embodiment, the light color identification unit includes a light color sensor chip, a RED LED chip RED, a GREEN LED chip GREEN, a BLUE LED chip BLUE, a capacitor C2, a capacitor C28, a resistor R2, a resistor R8, a resistor R9, and a resistor R10, a first T1 pin of the light color sensor chip is connected to the RED LED chip RED after being connected to the resistor R8 in series, a second T1 pin of the light color sensor chip is connected to the GREEN LED chip GREEN after being connected to the resistor R9 in series, and a third T1 pin of the light color sensor chip is connected to the BLUE LED chip BLUE after being connected to the resistor R10 in series; one path of a 4.2V pin of the photochromic sensor chip is connected with a capacitor C2 in series and then is grounded, and the other path of the pin is connected to 4.2V voltage; a first CAMERA pin of the photochromic sensor chip is connected with an RX1 pin of the singlechip LQFP48, one path of a GND pin of the photochromic sensor chip is connected with a TX1 pin of the singlechip LQFP48, and the other path of the GND pin of the photochromic sensor chip is connected with a resistor R2 in series and then is grounded; a second CAMERA pin of the photochromic sensor chip is connected with the capacitor C28 in series and then is grounded; the SOUND pin of the photochromic sensor chip is grounded.
In this embodiment, the photochromic sensor chip selects the XYZ color sensor TCS3430 (or TSC 34725), collects the photochromic signals (color RGB values, color temperature, and illumination intensity) of the reading surface in real time, and obtains the XYZ color coordinate values and color temperature of the RGB colors after signal processing and conversion by the central control unit.
Referring to the schematic diagram of the dimming unit on the right of fig. 2, the dimming unit includes a first switching circuit and a first LED module connected to each other, a second switching circuit and a second LED module connected to each other, and a third switching circuit and a third LED module connected to each other; the first switch circuit, the second switch circuit and the third switch circuit are all connected to the central control unit, the central control unit controls the on-off ratio of the first switch circuit, the second switch circuit or the third switch circuit by outputting PWM waves with different duty ratios, and the average current of the first LED module, the second LED module or the third LED module connected with the central control unit is adjusted, so that dimming and color mixing are achieved.
As a preferred solution, the principle of the dimming unit is as follows: after an IO28 pin of the single chip microcomputer LQFP48 is connected with a resistor R31X in series, one path of the series resistor R30 is grounded, the other path of the series resistor R is connected with a grid electrode (G pole) of an MOS tube Q2, a source electrode (S pole) of the MOS tube Q2 is grounded, and a drain electrode (D pole) of the MOS tube Q2 is sequentially connected with a first light emitting diode and a first resistor in series. After an IO29 pin of the single chip microcomputer LQFP48 is connected with a resistor R45 in series, one path of the series resistor R7 is grounded, the other path of the series resistor R is connected with a grid electrode (G pole) of an MOS tube Q1, a source electrode (S pole) of the MOS tube Q1 is grounded, and a drain electrode (D pole) of the MOS tube Q1 is sequentially connected with a second light emitting diode and a second resistor in series. After an IO0 pin of the single chip microcomputer LQFP48 is connected with the resistor R44 in series, one path of the series resistor R11 is grounded, the other path of the series resistor R is connected with a grid electrode (G pole) of the MOS tube Q3, a source electrode (S pole) of the MOS tube Q3 is grounded, and a drain electrode (D pole) of the MOS tube Q3 is sequentially connected with the third light-emitting diode and the third resistor in series. The first light emitting diode is a white light LED, the second light emitting diode is a red light LED, the third light emitting diode is a green light LED, and the first light emitting diode, the second light emitting diode and the third light emitting diode can be one light emitting diode or a group of light emitting diodes. The first resistance is 10 ohms and the second and third resistances are both 10 ohms.
Referring to fig. 4, the power supply unit includes a transformer L2, a buck converter OC5864, a capacitor C1X, a capacitor C6X, a resistor R1, a resistor R21X, a resistor R22X, a diode D1, and an inductor L1X, a first terminal of the transformer L2 is connected to a first terminal of the resistor R1, an EN terminal of the buck converter OC5864, and a first terminal of the capacitor C1X, a second terminal of the transformer L2, a second terminal of the capacitor C1X, and a GND terminal of the buck converter OC5864 are grounded, a second terminal of the resistor R1 is connected to a VIN terminal of the buck converter OC5864, a SW terminal of the buck converter OC5864 is connected to a cathode of the diode D1 and a first terminal of the inductor L1X, an anode of the diode D1 is grounded, a second terminal of the inductor L1X is connected to a first terminal of the capacitor C6X and a first terminal of the resistor R21X, a second terminal of the capacitor R21X is grounded, and a second terminal of the resistor R22X is connected to a ground. The buck converter OC5864 is a monolithic buck-type switched-mode converter with a built-in power MOSFET.
The central control unit obtains the light color parameters of the reading surface of the user through the light color identification unit, compares the light color parameters with preset parameters, controls the dimming unit to adjust the white light or the green light or the red light to the optimal brightness, color temperature and color rendering index according to the comparison result, and outputs and displays information through the LCD information output unit, thereby ensuring that the user has the optimal learning environment and protecting the eyesight of the user.
Example 2
Referring to fig. 5, the learning environment monitoring circuit based on light color discrimination of the present embodiment includes a power supply unit, a central control unit, a light color identification unit, an air quality detection unit, and a dimming unit, where the power supply unit, the light color identification unit, the air quality detection unit, and the dimming unit are all electrically connected to the central control unit; the power supply unit supplies power to the central control unit, the light color identification unit, the air quality detection unit and the dimming unit, the light color identification unit is used for collecting light color parameters of a reading surface of a user, the air quality detection unit is used for detecting smoke, dust and PM2.5 harmful particles in a use environment, the central control unit is used for receiving the light color parameters of the light color identification unit, comparing the light color parameters with preset parameters, and controlling the dimming unit to adjust brightness, color temperature or color rendering index according to a comparison result, the central control unit is also used for receiving the air quality parameters of the air quality detection unit, comparing the air quality parameters with the preset parameters, and if the air quality parameters exceed a threshold value, giving an alarm prompt to ensure that the user has the best learning environment and protecting the eyesight of the user.
As a specific embodiment, the air quality detection unit comprises a photoelectric coupler used for photoelectric emission and reflection media, an operational amplifier used for judging and comparing, and an alarm unit used for alarming, wherein the photoelectric coupler is used for reflecting an emission waveform in an air unimpeded environment, the operational amplifier is used for comparing a numerical value of a current emission waveform with a preset judgment and comparison threshold value, and if the numerical value exceeds the threshold value, the alarm unit alarms.
The current desk lamp can only be preset in a factory, set in a proper light color and cannot be adjusted after leaving the factory, but in the practical application process, because the placement positions of the learning reading materials are different, the optimal illumination angles are different, the positions of the learning reading materials can be changed continuously when a user learns, and light can generate a comprehensive effect with any object with color reflection, so that the user cannot be ensured to be just adaptive to the set light color when using the desk lamp.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.
While the present invention has been disclosed above by the description of specific embodiments thereof, it should be understood that all of the embodiments and examples described above are illustrative and not restrictive. Various modifications, improvements or equivalents to the invention may be devised by those skilled in the art within the spirit and scope of the appended claims. Such modifications, improvements and equivalents are also intended to be included within the scope of the present invention.
Claims (10)
1. Study environmental monitoring circuit based on photochromic discernment, its characterized in that: the intelligent light control system comprises a power supply unit, a central control unit, a light color identification unit and a light modulation unit, wherein the power supply unit, the light color identification unit and the light modulation unit are electrically connected with the central control unit; the power supply unit is used for supplying power to the central control unit, the light color identification unit and the dimming unit, the light color identification unit is used for collecting light color parameters of a reading surface of a user, and the central control unit is used for receiving the light color parameters of the light color identification unit, comparing the light color parameters with preset parameters and controlling the dimming unit to adjust brightness, color temperature or color rendering index according to a comparison result; the light color identification unit comprises an illuminance sensor and a color temperature sensor.
2. The learning environment monitoring circuit based on light color resolution of claim 1, wherein: the light color identification unit further comprises an RGB color sensing module.
3. The learning environment monitoring circuit based on light color resolution of claim 1, wherein: the photochromic recognition unit further comprises a camera, and the camera is used for recognizing the orientation of the reading surface of the user.
4. The light color resolution-based learning environment monitoring circuit of claim 3, wherein: the photochromic recognition unit further comprises a rotating support for placing the illumination sensor and a driving motor for driving the rotating support to rotate, the driving motor is electrically connected with the central control unit, and the central control unit judges the inclination of the learning reading surface through the received image signal of the camera so as to control the driving motor to rotate the rotating support to the learning reading surface of a user.
5. The photochromic-resolving-based learning environment monitoring circuit of claim 4, wherein: the rotary support comprises a supporting plate and a connecting piece, the supporting plate is connected with the connecting piece, the illumination sensor is placed on the supporting plate, and the connecting piece is connected with an output shaft of the driving motor.
6. The learning environment monitoring circuit based on light color resolution of claim 1, wherein: the central control unit comprises a single chip microcomputer LQFP48 and a capacitor C2, a VDD pin of the single chip microcomputer LQFP48 is connected with 3.3V voltage, a RESET pin of the single chip microcomputer LQFP48 is connected with the capacitor C2 in series and then grounded, and an RX1 pin and a TX1 pin of the single chip microcomputer LQFP48 are connected with the light color identification unit.
7. The light color resolution-based learning environment monitoring circuit of claim 6, wherein: the light color identification unit comprises a light color sensor chip, a RED LED chip RED, a GREEN LED chip GREEN, a BLUE LED chip BLUE, a capacitor C2, a capacitor C28, a resistor R2, a resistor R8, a resistor R9 and a resistor R10, wherein a first T1 pin of the light color sensor chip is connected with the RED LED chip RED after being connected with the resistor R8 in series, a second T1 pin of the light color sensor chip is connected with the GREEN LED chip GREEN after being connected with the resistor R9 in series, and a third T1 pin of the light color sensor chip is connected with the BLUE LED chip BLUE after being connected with the resistor R10 in series; one path of a 4.2V pin of the photochromic sensor chip is connected with a capacitor C2 in series and then is grounded, and the other path of the pin is connected to 4.2V voltage; a first CAMERA pin of the photochromic sensor chip is connected with an RX1 pin of the single chip microcomputer LQFP48, one path of a GND pin of the photochromic sensor chip is connected with a TX1 pin of the single chip microcomputer LQFP48, and the other path of the GND pin of the photochromic sensor chip is connected with a resistor R2 in series and then is grounded; a second CAMERA pin of the photochromic sensor chip is connected with a capacitor C28 in series and then is grounded; the SOUND pin of the photochromic sensor chip is grounded.
8. The light color resolution-based learning environment monitoring circuit of claim 7, wherein: the photochromic sensor chip is implemented by a color sensor TCS 3430.
9. The learning environment monitoring circuit based on light color resolution of claim 1, wherein: the learning environment monitoring circuit further comprises an air quality detection unit, and the air quality detection unit is electrically connected with the central control unit.
10. The learning environment monitoring circuit based on light color resolution of claim 9, wherein: the air quality detection unit comprises a photoelectric coupler used for photoelectric emission and reflection media, an operational amplifier used for judging and comparing and an alarm unit used for alarming, the photoelectric coupler is used for reflecting an emission waveform in an air non-blocking environment, the operational amplifier is used for comparing the value of the current emission waveform with the preset reflection threshold value, and if the value exceeds the threshold value, the alarm unit alarms.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222188806.0U CN218416727U (en) | 2022-08-19 | 2022-08-19 | Learning environment monitoring circuit based on photochromic resolution |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222188806.0U CN218416727U (en) | 2022-08-19 | 2022-08-19 | Learning environment monitoring circuit based on photochromic resolution |
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| CN218416727U true CN218416727U (en) | 2023-01-31 |
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