CN113749409A

CN113749409A - Intelligent learning table based on PWM dimming

Info

Publication number: CN113749409A
Application number: CN202111032588.5A
Authority: CN
Inventors: 李林峰; 许天成
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2021-12-07

Abstract

The invention discloses an intelligent learning table based on PWM dimming, which relates to the technical field of learning equipment and comprises a main body, wherein a table plate is arranged on the upper surface of the main body, a table frame is fixedly arranged on the upper surface of the table plate, a table lamp assembly is arranged in an inner cavity of the table frame, a shading assembly is arranged on the outer surface of the table lamp assembly, the table lamp assembly comprises an LED lamp bank, connecting rods are sleeved on two sides of the LED lamp bank, a loop bar is sleeved in the inner cavity of the connecting rods, a hand-pulling wheel is fixedly arranged at one end, far away from the connecting rods, of the loop bar, a limiting block is arranged on the outer surface of the hand-pulling wheel, and a sliding block is sleeved on the outer surface of the connecting rods; the intelligent learning table can adjust brightness according to light, and the student can turn off light after walking.

Description

Intelligent learning table based on PWM dimming

Technical Field

The invention relates to the technical field of learning equipment, in particular to an intelligent learning table based on PWM dimming.

Background

The used study table of student has passed through long-term development, and the kind of study table is various, and the function is more and more ripe, and the study table has the LED banks even, helps the student to gain better sight, and intelligence study table is more and more favored by numerous students.

Present intelligence study table desk lamp is fixed at a certain position of study table, can not carry out turned angle, accomodate and slide to the lamp, occupies study table position when not using, influences study table and uses and experience, and present intelligence study table can not adjust luminance according to light in addition, and the student can not close light by oneself after walking, therefore need to design an intelligence study table based on PWM adjusts luminance urgently and solve above-mentioned problem.

Disclosure of Invention

In order to solve the defects in the background art, the invention aims to provide the intelligent learning table based on PWM dimming, and the intelligent learning table lamp can rotate, store and slide a lamp and is stored in the inner cavity of the learning table when not used, so that students have good use experience;

meanwhile, when the intelligent learning desk is used, the brightness of the intelligent learning desk can be adjusted according to light, and the light of a student can be automatically turned off after the student walks.

The purpose of the invention can be realized by the following technical scheme:

an intelligent learning table based on PWM dimming comprises a main body and is characterized in that a table plate is arranged on the upper surface of the main body, a table frame is fixedly mounted on the upper surface of the table plate, a table lamp assembly is arranged in an inner cavity of the table frame, and a shading assembly is arranged on the outer surface of the table lamp assembly;

the desk lamp assembly comprises a LED lamp set, connecting rods are sleeved on two sides of the LED lamp set, sleeve rods are sleeved in inner cavities of the connecting rods, hand-dial wheels are fixedly mounted at one ends, away from the connecting rods, of the sleeve rods, limiting blocks are arranged on the outer surfaces of the hand-dial wheels, sliders are sleeved on the outer surfaces of the connecting rods, second fixing blocks are mounted on the outer surfaces of the sliders, second limiting grooves are formed in one sides, close to the hand-dial wheels, of the second fixing blocks, fixing frames are sleeved on the outer surfaces of the sliders, and the fixing frames and the table frame are fixedly connected.

Furthermore, the stopper has the multiunit, and evenly distributed is at the surface of hand thumb wheel, stopper and second spacing groove block, the inside of loop bar is provided with the spring.

Furthermore, the LED lamp bank is fixedly connected with the connecting rod, the sliding block is connected with the fixing frame in a sliding mode, and a square groove is formed in one side, close to the hand-pulling wheel, of the table frame.

Further, the shading assembly comprises two fixing rings, the two fixing rings are located at two ends of the LED lamp bank, the inner cavity of each fixing ring is sleeved with the rotating shaft, and the middle part of the rotating shaft is provided with a shading piece.

Furthermore, the lower surface of the LED lamp bank is provided with a first button, a second button, a third button and a power supply, a single chip microcomputer system is arranged inside the LED lamp bank, and the single chip microcomputer system comprises a button module, an illumination intensity acquisition module and a human body induction module.

The invention has the beneficial effects that:

1. the intelligent learning table lamp can rotate to adjust the irradiation angle, and is stored and slid, and when not in use, the intelligent learning table lamp is stored in the inner cavity of the learning table, so that students have good use experience;

2. the intelligent learning table can adjust the brightness according to the light, and the light of the student can be automatically turned off after the student walks.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the desk lamp assembly of the present invention;

FIG. 3 is a schematic view of the desk lamp assembly of the present invention;

FIG. 4 is a schematic view of the slider configuration of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 4 according to the present invention;

FIG. 6 is a flowchart of the overall process of the present invention;

fig. 7 is a block diagram schematic of the system of the present invention.

In the figure: 1. a main body; 2. a table plate; 3. a table frame; 4. a desk lamp assembly; 41. an LED lamp group; 42. a connecting rod; 43. a loop bar; 44. a hand-pulling wheel; 45. a limiting block; 46. a slider; 47. a second fixed block; 48. a second limit groove; 49. a fixed mount; 5. a shading component; 51. a fixing ring; 52. a rotating shaft; 53. a light shielding member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

The utility model provides an intelligence study table based on PWM adjusts luminance, as shown in fig. 1, including main part 1, the upper surface of main part 1 is provided with table subassembly 2, table subassembly 2 can be accomodate student's articles for use, the last fixed surface of table subassembly 2 installs table frame 3, the inner chamber of table frame 3 is provided with table lamp subassembly 4, table lamp subassembly 4 can shine light, and can accomodate, prevent occupation space, table lamp subassembly 4's surface is provided with shading components 5, shading components 5 can place the light that table subassembly 4 produced and shine on student's eyes.

As shown in fig. 3, the light shielding assembly 5 includes two fixing rings 51, two fixing rings 51 are provided, and the fixing rings 51 are located at two ends of the LED lamp set 41, a rotating shaft 52 is sleeved in an inner cavity of the fixing rings 51, a light shielding member 53 is provided in a middle portion of the rotating shaft 52, when the LED lamp set 41 emits light, the LED lamp set 41 is located at a high position, eyes of a student are irradiated when the student writes, the light shielding member 53 is pulled to shield part of light generated by the light shielding member 53 to the LED lamp set 41, eyes of the student are prevented from being damaged, the light shielding member 53 can be collected by rotating the rotating shaft 52, and light shielding is prevented from being shielded.

As shown in fig. 3, 4 and 5, the desk lamp assembly 4 includes an LED lamp set 41, connecting rods 42 are sleeved on two sides of the LED lamp set 41, a loop bar 43 is sleeved in an inner cavity of the connecting rods 42, a hand-pulling wheel 44 is fixedly mounted at one end of the loop bar 43 away from the connecting rods 42, a limiting block 45 is disposed on an outer surface of the hand-pulling wheel 44, a slider 46 is sleeved on an outer surface of the connecting rods 42, a second fixing block 47 is fixedly mounted on an outer surface of the slider 46, a second limiting groove 48 is disposed at one side of the second fixing block 47 close to the hand-pulling wheel 44, a fixing frame 49 is sleeved on an outer surface of the slider 46, the fixing frame 49 is fixedly connected with the desk frame 3, the limiting blocks 45 are provided with a plurality of groups and are uniformly distributed on the outer surface of the hand-pulling wheel 44, the limiting block 45 is engaged with the second limiting groove 48, a spring is disposed inside the loop bar 43, the LED lamp set 41 is fixedly connected with the connecting rods 42, the slider 46 is slidably connected with the fixing frame 49, a square groove is disposed at one side of the desk frame 3 close to the hand-pulling wheel 44, pulling slider 46 can drive LED banks 41 and contract, can pull out slider 46 from mount 49 when needing to use LED banks 41 to throw light on promptly, can push away slider 46 when not needing to use LED banks 41 to throw light on and accomodate the inner chamber of mount 49, drive LED banks 41 through rotating hand thumb wheel 44 and rotate, realize the angle modulation of light, pulling hand thumb wheel 44 makes stopper 45 and second spacing groove 48 break away from the block promptly, can rotate hand thumb wheel 44 so that adjust the angle of shining of LED banks 41 this moment, block through stopper 45 and second spacing groove 48, prevent to adjust the angle after LED banks 41 take place to rock.

As shown in fig. 6 and 7, the lower surface of the LED lamp set 41 is provided with a first button, a second button, a third button and a power supply, the LED lamp set 41 is internally provided with a single chip microcomputer system and a thermistor, the single chip microcomputer system comprises a button module, an illumination intensity acquisition module and a human body induction module, the LED lamp set 41 realizes the adjustment of the light intensity of the desk lamp by combining the single chip microcomputer technology and the PWM dimming technology, the duty ratio of PWM is controlled by the single chip microcomputer, thereby changing the voltage to realize the adjustment of the brightness of the light, automatically inducing the light to be turned on when the human body is in the range of the desk lamp and the ambient light is weak, and the brightness of the lamp is automatically adjusted along with the change of the ambient light, once the person leaves the range of the desk lamp, namely, the infrared pyroelectric sensor can not detect people, the light is automatically turned off after one minute, when the ambient light is strong, the resistance value of the photosensitive resistor is small, and the sensor signal processing circuit can perform corresponding processing; when the light of the surrounding environment is weak, such as cloudy days or at night, the resistance value of the photoresistor is increased, the sensor signal processing circuit transmits the received signal to the singlechip control circuit, so as to control the desk lamp and the human body infrared sensing module, which is an automatic control module based on infrared technology, when a person enters the sensing range, the sensor outputs a high level, when the person leaves the sensing range, the sensor automatically delays to close the high level and outputs a low level, in addition, the pyroelectric infrared sensor adopts a repeatable triggering mode, namely after the high level is sensed and output, if the person moves in the sensing range in the delay time period, the output of the pyroelectric infrared sensor keeps the high level all the time, the sensing module automatically delays for a delay time period after detecting each movement of the human body, and the time of the last movement is taken as the starting point of the delay time, the high level is delayed to be changed into the low level until the person leaves, firstly, judging whether a first key is pressed down, if so, switching the control mode, namely, changing the manual mode into the automatic mode, and changing the automatic mode into the manual mode; and then, according to the current working mode, carrying out different processing, if the current working mode is the automatic mode, firstly judging whether the existence of a person is detected in the past one minute, if the existence of the person is detected, reading the data of the system, further calculating the illumination intensity of the current space environment, then adjusting the brightness of the desk lamp in real time according to different illumination intensity sizes, realizing the effect that the darker the light is, the brighter the desk lamp is, directly turning off the desk lamp if the person is not detected, if the current working mode is the manual mode, respectively judging whether a key two and a key three are pressed down, if the key two is pressed down, reducing the brightness of the desk lamp, and if the key three is pressed down, increasing the brightness of the desk lamp.

When using, it can drive LED banks 41 and rotate to rotate hand thumb wheel 44, realize the angle modulation to LED banks 41, can pull slider 46, make LED banks 41 slide and accomodate, cover the light that LED banks 41 produced through pulling anti-dazzling screen 53, can prevent that student's eyes from receiving the light irradiation that LED banks 41 produced, LED banks 41 combines together through single chip microcomputer technology and PWM dimming technique and realizes the regulation of desk lamp light intensity, utilize single chip microcomputer control PWM's duty cycle, thereby change the size of voltage and realize the regulation of light luminance, when the human body is at the within range of desk lamp and when ambient light is relatively weak, the auto-induction is turned on the lamp, and the luminance of lamp is along with ambient light's change and auto-control, in case the people leaves the desk lamp scope, infrared heat release sensor detects no man-hour, the automatic light-out after a minute.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. An intelligent learning table based on PWM dimming comprises a main body (1) and is characterized in that a table plate (2) is arranged on the upper surface of the main body (1), a table frame (3) is fixedly installed on the upper surface of the table plate (2), a table lamp assembly (4) is arranged in an inner cavity of the table frame (3), and a shading assembly (5) is arranged on the outer surface of the table lamp assembly (4);

desk lamp subassembly (4) include LED banks (41), connecting rod (42) have been cup jointed to the both sides of LED banks (41), loop bar (43) have been cup jointed to the inner chamber of connecting rod (42), the one end fixed mounting that connecting rod (42) were kept away from in loop bar (43) has hand wheel (44), the surface of hand wheel (44) is provided with stopper (45), slider (46) have been cup jointed to the surface of connecting rod (42), the external fixed surface of slider (46) installs second fixed block (47), second fixed block (47) have been close to one side of hand wheel (44) and have been seted up second spacing groove (48), mount (49) have been cup jointed to the surface of slider (46), and mount (49) and table frame (3) fixed connection.

2. The intelligent learning table based on PWM dimming of claim 1, wherein the limiting blocks (45) have multiple groups and are uniformly distributed on the outer surface of the hand-pulling wheel (44), the limiting blocks (45) are engaged with the second limiting grooves (48), and the loop bar (43) is internally provided with a spring.

3. The intelligent learning table based on PWM dimming according to claim 1, wherein the LED lamp set (41) is fixedly connected with the connecting rod (42), the sliding block (46) is slidably connected with the fixed frame (49), and a square groove is formed in one side, close to the hand-operated wheel (44), of the table frame (3).

4. The intelligent learning table based on PWM dimming according to claim 1, wherein the light shielding assembly (5) comprises two fixing rings (51), the fixing rings (51) are located at two ends of the LED lamp set (41), an inner cavity of each fixing ring (51) is sleeved with a rotating shaft (52), and a light shielding piece (53) is arranged in the middle of each rotating shaft (52).

5. The intelligent learning table based on PWM dimming according to claim 4, wherein a first button, a second button, a third button and a power supply are arranged on the lower surface of the LED lamp set (41), a single chip microcomputer system is arranged inside the LED lamp set (41), and the single chip microcomputer system comprises a button module, an illumination intensity acquisition module and a human body induction module.