CN104750004A - Automatic blind window control system - Google Patents

Abstract

The invention relates to an automatic blind window control system which comprises an illumination sensor, a motor and a controller. The illumination sensor is used for detecting illumination values of a current working face; the motor is used for adjusting the angle of a blind window; the controller is used for being connected with the illumination sensor and the motor, and when the illumination values detected by the illumination sensor are greater than the first illumination value, a first drive signal used for driving the motor is generated by the controller to reduce the angle of the blind window so as to reduce the illuminating values. By the above mode, the angle of the blind window can be automatically adjusted, and the automatic blind window control system has the advantages of simple structure and low cost.

Description

Shutter automatic control system

technical field

The invention relates to the field of blinds, in particular to an automatic control system for blinds.

Background technique

The types of sunshade louvers commonly used in the market are manual and electric. Manual blinds are easy to install and require little initial investment, and are generally chosen for installation in ordinary office buildings that do not have high requirements on the indoor environment. The disadvantage of manual blinds is that the angle of the blinds needs to be adjusted manually, otherwise it will not be able to play the role of shading and adjusting indoor light. The electric sunshade louver can be remotely controlled by a remote controller or a control panel, but it can only be controlled by human operation, which leads to low efficiency and often becomes a decoration because of laziness.

Contents of the invention

The object of the present invention is to provide an automatic shutter control system with simple structure, low cost, and the ability to automatically adjust the angle of the shutter.

In order to solve the above-mentioned technical problems, as an aspect of the present invention, a blinds automatic control system is provided, including: an illuminance sensor, used to detect the illuminance value of the current working surface; a motor, used to adjust the angle of the blinds; a controller, and The illuminance sensor is connected to the motor, and the controller generates a first driving signal for driving the motor when the illuminance value detected by the illuminance sensor is greater than the first illuminance value, so as to reduce the angle of the louver so as to reduce the illuminance value.

Preferably, the shutter automatic control system further includes an LED lamp connected to the controller for supplementing the indoor illuminance; if the illuminance value detected by the illuminance sensor cannot be greater than the second illuminance value by adjusting the angle of the shutter no matter what, Then the controller generates a second driving signal for turning on the LED lamp to turn on the LED lamp.

Preferably, the motor is a forward and reverse DC motor.

Preferably, the shutter automatic control system further includes a constant current source chip for supplying power to the LED lamp, and the constant current source chip is BP1360.

Preferably, the light sensor is BH1750.

Preferably, the controller is a STC89C52 single-chip microcomputer.

Preferably, the controller and the illuminance sensor are connected through an IIC bus.

Preferably, the shutter automatic control system also includes a liquid crystal display screen connected to the controller.

Due to the adoption of the above technical solution, the present invention can automatically adjust the angle of the shutter, and has the characteristics of simple structure and low cost.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Reference signs in the figure: 1, illuminance sensor; 2, motor; 3, controller; 4, LED lamp; 5, shutter.

Detailed ways

Embodiments of the invention are described in detail below, but the invention can be practiced in many different ways as defined and covered by the claims.

Please refer to Fig. 1, the present invention provides a kind of shutter automatic control system, comprises: illuminance sensor 1, is used for detecting the illuminance value of current working surface; Motor 2, is used for adjusting the angle of shutter 5; Controller 3, and illuminance sensor 1 is connected to the motor 2, and the controller 3 generates a first driving signal for driving the motor 2 when the illuminance value detected by the illuminance sensor 1 is greater than the first illuminance value, so as to reduce the angle of the blinds and thereby reduce the illuminance value.

Preferably, the controller 3 is a STC89C52 single-chip microcomputer. Preferably, the motor 2 is a forward and reverse DC motor. For example, the microcontroller can use DS1302 as a clock chip to provide time basis for the system. The single-chip microcomputer is also equipped with a crystal oscillator circuit and a reset and enable circuit to form the smallest single-chip microcomputer system. The illuminance sensor 1 can be connected with the P1.3, P1.4, and P1.5 pins of the STC89C52 microcontroller to control the data acquisition of the illuminance sensor 1.

In one embodiment, preferably, if the illuminance value detected by the illuminance sensor 1 exceeds 3000 lex, the angle of the blinds can be adjusted through the first driving signal to reduce the illuminance value, thereby avoiding direct sunlight and causing glare.

Due to the adoption of the above technical solution, the present invention can automatically adjust the angle of the shutter, and has the characteristics of simple structure and low cost.

Preferably, the shutter automatic control system also includes an LED lamp 4, connected to the controller 3, for supplementing the indoor illuminance; if the angle of the louver is adjusted anyway, the illuminance value detected by the illuminance sensor 1 cannot be greater than the second illuminance value, the controller 3 generates a second driving signal for turning on the LED lamp 4 to turn on the LED lamp 4 . In one embodiment, for example, on a cloudy day or in the evening, no matter how the shutter angle is adjusted, the illuminance value detected by the illuminance sensor 1 cannot exceed 200 lex. At this time, the second driving signal drives the LED lamp 4 to emit light to supplement the indoor illuminance.

Preferably, the shutter automatic control system further includes a constant current source chip for supplying power to the LED lamp 4, and the constant current source chip is BP1360. For example, the constant current source chip is connected to the PWM driving pin of the controller 3, so that the second driving signal can be provided to the LED lamp 4 through the PWM driving pin of the controller to drive it to emit light.

Among them, the BP1360 chip is a step-down constant current driver chip that drives high-brightness LEDs. It uses a small number of external components to provide a very cost-effective solution for vehicle-mounted LEDs, LED street lights, and solar LEDs. Its input voltage range is wide, from 5 volts to 30 volts. The chip receives 0.5-2.5v analog dimming and PWM dimming with a wide frequency range through the DIM pin. The built-in power switch can drive one 3-watt or multiple 1-watt lamp beads according to different input voltages, and The BP1360 chip includes over-temperature protection, LED short-circuit and open-circuit protection functions.

Preferably, the illuminance sensor 1 is BH1750. Digital illuminance sensor BH1750 (especially BH1750FVI) has the following characteristics: with IIC bus interface (f/s mode support), the spectral range is similar to the human eye; with wide range and high resolution, the measurement range is 1-63335lx, and the measurement accuracy 0.35lx; 50/60Hz light noise reject-function; little dependence on light sources (such as incandescent lamps, led lamps, halogen lamps, fluorescent lamps, etc.).

Preferably, the controller 3 is connected to the illuminance sensor 1 through an IIC bus. For example, BH1750 sensor can communicate with MCU through IIC bus.

Preferably, the blinds automatic control system also includes a liquid crystal display connected to the controller 3 . The LCD screen can be used to display the current light value or other information. For example, the LCD screen can be PG160128, etc.

The present invention can automatically adjust the angle of the louvers according to different outdoor conditions. For example, in winter, the angle of the louvers can be adjusted as large as possible, which is conducive to the entry of sunlight into the room, increasing the room temperature, making people more comfortable, and reducing the heat load of the air conditioner. To achieve the purpose of energy saving. And in the transitional season, since the air conditioner is not used, the lighting energy consumption can be effectively reduced by using the present invention.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (8)

1. A blinds automatic control system, characterized in that, comprising: An illuminance sensor (1), used to detect the illuminance value of the current working surface; The motor (2) is used to adjust the angle of the shutter; A controller (3), connected to the illuminance sensor (1) and the motor (2), the controller (3) generates when the illuminance value detected by the illuminance sensor (1) is greater than the first illuminance value The first driving signal is used to drive the motor (2) to reduce the angle of the blinds so as to reduce the illuminance value. 2. The blinds automatic control system according to claim 1, characterized in that, the blinds automatic control system also includes an LED lamp (4) connected to the controller (3) for supplementing indoor illumination; No matter how to adjust the angle of the blinds, the illuminance value detected by the illuminance sensor (1) cannot be greater than the second illuminance value, then the controller (3) generates a second illuminance value for turning on the LED lamp (4). A signal is driven to turn on the LED light (4). 3. The blinds automatic control system according to claim 1, characterized in that, the motor (2) is a forward and reverse DC motor. 4. The shutter automatic control system according to claim 1, characterized in that, the shutter automatic control system further comprises a constant current source chip for supplying power to the LED lamp (4), and the constant current source chip is BP1360. 5. The blinds automatic control system according to claim 1, characterized in that, the illuminance sensor (1) is BH1750. 6. The blinds automatic control system according to claim 1, characterized in that the controller (3) is a STC89C52 single-chip microcomputer. 7. The blinds automatic control system according to claim 1, characterized in that the controller (3) is connected to the illuminance sensor (1) through an IIC bus. 8. The blinds automatic control system according to claim 1, characterized in that, the blinds automatic control system further comprises a liquid crystal display connected to the controller (3).