CN215222532U

CN215222532U - Classroom light modulation device

Info

Publication number: CN215222532U
Application number: CN202121089072.XU
Authority: CN
Inventors: 钱杰
Original assignee: Wuxi Xinma Intelligent Technology Co ltd
Current assignee: Wuxi Xinma Intelligent Technology Co ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-12-17
Anticipated expiration: 2031-05-20

Abstract

The embodiment of the utility model discloses a classroom dimming device, which comprises a light brightness acquisition circuit, a signal transceiving circuit, a control circuit and a LED lamp to be controlled; the output end of the light brightness acquisition circuit is connected with the input end of the signal transceiving circuit; the output end of the signal transceiving circuit is connected with the input end of the control circuit; the driving output end of the control circuit is connected with the LED lamp to be controlled; the light brightness acquisition circuit comprises a photosensitive sensor U1, a capacitor C1, a resistor R1, a resistor R2 and a resistor R3, wherein a power supply end VCC of the photosensitive sensor U1 is connected with one end of the capacitor C1, and the other end of the capacitor C1 is connected with a ground end GND of the photosensitive sensor U1 and an analog-to-digital conversion end AD of the photosensitive sensor U1 and then grounded. The utility model discloses the illumination state of controlling the LED lamp is treated according to the luminance of each photosite in fact and is adjusted, has effectively reduced the injury of indoor light problem to student's eyesight, and simple structure, and is with low costs, suitable popularization and application.

Description

Classroom light modulation device

Technical Field

The embodiment of the utility model provides a classroom lighting technology field especially relates to a classroom device of adjusting luminance.

Background

As is known, eyestrain is caused by improper environment brightness, eyes are stimulated by too bright or too dark light in a classroom, and optic nerves are damaged, so that the eyes of teachers and students are dry and tired. In addition, when light and outdoor ambient light are superposed in a classroom, local too bright/too dark in the classroom is easily caused, so that the blackboard reflects light or a projector displays fuzziness, and the teaching and learning environments of teachers and students are influenced. Therefore, the traditional indoor lighting mode cannot provide proper and healthy light brightness for teachers and students. The above problems are urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a classroom lighting device to solve the above mentioned problems in the background art.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

a classroom dimming device comprises a light brightness acquisition circuit, a signal transceiving circuit, a control circuit and an LED lamp to be controlled; the light brightness acquisition circuit is arranged at a photosensitive point in the classroom; the output end of the light brightness acquisition circuit is connected with the input end of the signal transceiving circuit; the output end of the signal transceiving circuit is connected with the input end of the control circuit; the driving output end of the control circuit is connected with the LED lamp to be controlled; the light brightness acquisition circuit comprises a photosensitive sensor U1, a capacitor C1, a resistor R1, a resistor R2 and a resistor R3, wherein a power supply end VCC of the photosensitive sensor U1 is connected with one end of a capacitor C1, the other end of the capacitor C1 is connected with a ground end GND of the photosensitive sensor U1 and an analog-to-digital conversion end AD of the photosensitive sensor U1 and then grounded, a data end SDA of the photosensitive sensor U1 is connected with one end of the resistor R1, a clock signal end SCL of the photosensitive sensor U1 is connected with one end of the resistor R2, a detection end INT of the photosensitive sensor U1 is connected with one end of the resistor R3, and one end of the resistor R1, one end of the resistor R2 and the other end of the resistor R3 are connected and then connected with a power supply.

Preferably, the signal transceiver circuit comprises an RS485 transceiver U2, a single chip microcomputer U3, a bidirectional voltage regulator diode Z1, a resistor R4, and a capacitor C2; the receiver output enabling end RE and the driver output enabling end DE of the RS485 transceiver U2 are connected and then connected with the single chip microcomputer U3, the driver output/receiver input in-phase end A of the RS485 transceiver U2 is connected with one end of a resistor R3 and one end of a bidirectional voltage-stabilizing diode Z1 and then connected with a control circuit, the driver output/receiver input in-phase end B of the RS485 transceiver U2 is connected with the other end of a resistor R3 and the other end of the bidirectional voltage-stabilizing diode Z1 and then connected with the control circuit, one end of a capacitor C2 is connected with the ground end GND of the single chip microcomputer U3 and then grounded, and the other end of the capacitor C2 is connected with the power supply end VCC of the single chip microcomputer U3 and then connected with a power supply.

Preferably, the classroom dimming device further comprises NB-IOT communication circuitry; one end of the NB-IOT communication circuit is connected with the control circuit, and the other end of the NB-IOT communication circuit is connected with the network server.

Preferably, twelve photosites are arranged in the classroom, and each photosite is provided with the light brightness acquisition circuit.

The embodiment of the utility model provides a classroom light modulation device can treat the illumination state of control LED lamp according to the luminance of each photosite and adjust, has effectively reduced the injury of indoor light problem to student's eyesight, simple structure moreover, and is with low costs, suitable popularization and application.

Drawings

Fig. 1 is a structural diagram of a classroom dimming device provided by an embodiment of the present invention;

fig. 2 is a diagram of a circuit structure for collecting light brightness provided by an embodiment of the present invention;

fig. 3 is a structural diagram of a signal transceiver circuit provided in an embodiment of the present invention;

fig. 4 is a structural diagram of a control circuit provided in an embodiment of the present invention;

fig. 5 is a diagram of an NB-IOT communication circuit structure provided in an embodiment of the present invention;

fig. 6 is a circuit structure diagram of an LED lamp provided by an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, fig. 1 is a structural diagram of a classroom dimming device according to an embodiment of the present invention.

The classroom dimming device 100 in this embodiment specifically includes a light brightness acquisition circuit 101, a signal transceiver circuit 102, a control circuit 103, and an LED lamp 104 to be controlled. Light brightness acquisition circuit 101 sets up the sensitization point department in the classroom, and the classroom sensitization point position of different structures is all inequality in this embodiment, adjusts the sensitization point position according to actual conditions is nimble. The output end of the light brightness acquisition circuit 101 is connected with the input end of the signal transceiver circuit 102, and the light brightness signal of the photosite where the light brightness acquisition circuit is located is acquired in real time through the light brightness acquisition circuit 101, converted and output to the signal transceiver circuit 102. The output end of the signal transceiver circuit 102 is connected with the input end of the control circuit 103, and transmits the received data to the control circuit 103 through RS485 communication. The driving output end of the control circuit 103 is connected to the LED lamp 104 to be controlled, and outputs a Pulse Width Modulation (PWM) signal to control the LED lamp 104 to be controlled to execute a corresponding illumination state after processing the received light brightness information of each photosite.

For example, as shown in fig. 2 in this embodiment, the light brightness acquiring circuit 101 includes a photosensitive sensor U1, a capacitor C1, a resistor R1, a resistor R2, and a resistor R3, a power source terminal VCC of the photosensitive sensor U1 is connected to one end of the capacitor C1, the other end of the capacitor C1 is connected to the ground terminal GND of the photosensitive sensor U1 and the analog-to-digital conversion terminal AD of the photosensitive sensor U1 and then grounded, a data terminal SDA of the photosensitive sensor U1 is connected to one end of the resistor R1, a clock signal terminal SCL of the photosensitive sensor U1 is connected to one end of the resistor R2, a detection terminal INT of the photosensitive sensor U1 is connected to one end of the resistor R3, and one end of the resistor R1, one end of the resistor R2, and the other end of the resistor R3 are connected and then connected to a power supply. For example, in the present embodiment, as shown in fig. 3, the signal transceiver circuit 102 includes an RS485 transceiver U2, a single chip U3, a bidirectional zener diode Z1, a resistor R4, and a capacitor C2; the receiver output enabling end RE and the driver output enabling end DE of the RS485 transceiver U2 are connected with the single chip microcomputer U3, the driver output/receiver input in-phase end A of the RS485 transceiver U2 is connected with one end of a resistor R3 and one end of a bidirectional voltage-stabilizing diode Z1 and then connected with a control circuit 103, the driver output/receiver input in-phase end B of the RS485 transceiver U2 is connected with the other end of a resistor R3 and the other end of the bidirectional voltage-stabilizing diode Z1 and then connected with the control circuit 103, one end of a capacitor C2 is connected with a ground end GND of the single chip microcomputer U3 and then grounded, and the other end of the capacitor C2 is connected with a VCC power supply end of the single chip microcomputer U3 and then connected with a power supply source. Illustratively, in the present embodiment, as shown in fig. 4, the control circuit 103 includes a single chip microcomputer U4. Illustratively, in the present embodiment, the classroom lighting device 100 further includes an NB-IOT (Narrow Band Internet of Things) communication circuit, and as shown in fig. 5, the NB-IOT communication circuit 105 includes an NB-IOT module U5. The NB-IOT communication circuit 105 has one end connected to the control circuit 103 and the other end connected to the web server 106, and the NB-IOT communication circuit 105 can realize remote control of the classroom lighting apparatus 100 by an external terminal device. For example, the circuit structure of the LED lamp 104 in the present embodiment is shown in fig. 6. Illustratively, twelve photosites are provided in the classroom in the present embodiment, and each photosite is provided with the light intensity collecting circuit 101.

The embodiment of the utility model provides a technical scheme can adjust according to the illumination state of each photosite treating the control LED lamp, has effectively reduced the injury of indoor light problem to student's eyesight, simple structure moreover, and is with low costs, suitable popularization and application.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A classroom dimming device is characterized by comprising a light brightness acquisition circuit, a signal transceiving circuit, a control circuit and an LED lamp to be controlled; the light brightness acquisition circuit is arranged at a photosensitive point in the classroom; the output end of the light brightness acquisition circuit is connected with the input end of the signal transceiving circuit; the output end of the signal transceiving circuit is connected with the input end of the control circuit; the driving output end of the control circuit is connected with the LED lamp to be controlled; the light brightness acquisition circuit comprises a photosensitive sensor U1, a capacitor C1, a resistor R1, a resistor R2 and a resistor R3, wherein a power supply end VCC of the photosensitive sensor U1 is connected with one end of a capacitor C1, the other end of the capacitor C1 is connected with a ground end GND of the photosensitive sensor U1 and an analog-to-digital conversion end AD of the photosensitive sensor U1 and then grounded, a data end SDA of the photosensitive sensor U1 is connected with one end of the resistor R1, a clock signal end SCL of the photosensitive sensor U1 is connected with one end of the resistor R2, a detection end INT of the photosensitive sensor U1 is connected with one end of the resistor R3, and one end of the resistor R1, one end of the resistor R2 and the other end of the resistor R3 are connected and then connected with a power supply.

2. The classroom dimming device as claimed in claim 1, wherein the signal transceiving circuit comprises an RS485 transceiver U2, a single chip microcomputer U3, a bidirectional zener diode Z1, a resistor R4, and a capacitor C2; the receiver output enabling end RE and the driver output enabling end DE of the RS485 transceiver U2 are connected and then connected with the single chip microcomputer U3, the driver output/receiver input in-phase end A of the RS485 transceiver U2 is connected with one end of a resistor R3 and one end of a bidirectional voltage-stabilizing diode Z1 and then connected with a control circuit, the driver output/receiver input in-phase end B of the RS485 transceiver U2 is connected with the other end of a resistor R3 and the other end of the bidirectional voltage-stabilizing diode Z1 and then connected with the control circuit, one end of a capacitor C2 is connected with the ground end GND of the single chip microcomputer U3 and then grounded, and the other end of the capacitor C2 is connected with the power supply end VCC of the single chip microcomputer U3 and then connected with a power supply.

3. The classroom dimming device as described in claim 2, further comprising an NB-IOT communication circuit; one end of the NB-IOT communication circuit is connected with the control circuit, and the other end of the NB-IOT communication circuit is connected with the network server.

4. The classroom dimming device as claimed in any one of claims 1 to 3, wherein twelve photosites are provided in the classroom, each photosite having the light intensity collection circuit mounted thereon.