KR20000018861A - Apparatus and method for adjusting an automatic intensity of illumination of an indoor lighting equipment - Google Patents

Abstract

PURPOSE: An apparatus for adjusting an automatic intensity of illumination is provided to maintain an indoor lighting at an optimum state by controlling the indoor lighting individually according to a brightness of a light. CONSTITUTION: The automatic intensity-of-illumination adjusting apparatus comprises: a sensor part for sensing an output voltage varied according to a variation of an external brightness; an infrared ray sensor part for sensing a location of a worker; a central processing part for receiving data from the sensor parts to process the received data; a display part for displaying the above-mentioned procedure.

Description

Automatic illuminance control device and method for indoor lighting equipment

In the past, the concept of an intelligent concept was introduced in large buildings and buildings to maintain optimal lighting throughout the building. However, only the luminaire at the worker's location is automatically turned on and the luminaire at the worker's place is automatically turned on. There was no function to turn off. In addition, it was not possible to automatically adjust the illuminance of the lighting fixtures according to the changing indoor illuminance according to the season and weather. Moreover, the installation and maintenance of the central control unit having such a function in the old building has a disadvantage of being expensive.

Therefore, the present invention is to overcome the disadvantages described above, the infrared sensor unit for detecting the position of the illuminance sensor unit and the worker output voltage changes according to the change in the external brightness and the data received from the illumination sensor unit and the infrared sensor unit for processing An automatic illuminance control device for an indoor lighting device comprising a central processing unit, a lighting control unit for controlling lighting according to a processing result of the central processing unit, and a display unit displaying the above process;

The method of realizing this includes the steps of initializing the CPU and the device, inspecting the supervisory block, comparing the previous data with the previous data, and turning on / off the corresponding power by using the changed data, and storing the current lighting state and again. Returning to an input value of comparing the previous data with the previous data;

The step of initializing the CPU and the device to detect the external illuminance and to compare the specified value with the specified value to determine the power on / off, and to display the current illuminance and the output value to detect the external illuminance It is implemented through the automatic dimming control method of the indoor lighting device, characterized in that consisting of the step of returning to the input value.

1 is a block diagram of a system

2 is a flow chart of the system

3 is a block diagram of an illuminance sensor

4 is a block diagram of an infrared sensor unit

5 is an interface block diagram of the CPU of the sensor unit;

6 is a block diagram of a controller

7 is a block diagram of a lighting control unit

The present invention is composed of an infrared sensor unit, an illumination sensor unit, an illumination control unit, a display, a central processing unit to configure the device for sensing the illumination of the room and the position of the worker to control the optimum environment.

Infrared sensor unit and illuminance sensor unit are used to detect the worker and the external environment, respectively, and the illuminance sensor is used to detect the external brightness and the infrared sensor is used to detect the worker. The central processing unit processes each individual information coming from these two sensors, and the lighting control unit controls the lighting to an optimal environment.

The lighting apparatus automatic control device and method through the illumination sensor unit in detail as follows.

The light sensor sends an output voltage to the A / D converter that varies with external brightness, and the A / D converter converts the voltage to digital. The converted digital data is transferred to the central processing unit at a predetermined time using a CPU internal timer. This data is converted into data for display on the LCD in the central processing unit, and compared with a preset reference value to control the illumination according to the result. This threshold can be changed by user access to the system.

3 is a block diagram of an illuminance sensor unit.

An automatic lighting apparatus control method and method through the infrared sensor unit are as follows.

The infrared sensor is attached to the luminaire to detect the worker's position and output 0V or 5V depending on the detection result.

In this way, it is easy to recognize which lights to turn on / off depending on whether the worker is detected and the system is easily operated in the central processing unit even when there are many lights to be controlled.

4 is a block diagram of an infrared sensor unit.

The interface between the central processing unit and the illuminance sensor unit and the central processing unit and the infrared sensor unit is operated in the following manner.

First, the sensing result of the infrared sensor unit is encoded by using an encoding device (for example, 74148), and the result is connected to a port of the serial input / output unit. The CPU takes the data of the serial input / output unit at a certain time and compares it with previous data, and if it is different, decodes the data again to control (on / off) the lighting and drives a relay through the serial input / output unit to turn on the corresponding lighting. off. In this case, the serial I / O can process and encode 8 bits at a time, so the sensing result that one port can accept is 16 per port. The serial I / O unit has three ports, so the maximum number of sensors that can be installed is 48.

5 is an interface block diagram of a sensor unit and a CPU.

The CPU receives data from each port at certain times and compares it with previous data. If the data is the same as the previous data, there is no need to control the lighting, so read the external brightness to use the system efficiently. You can also access the system via the keyboard if you want to control any lighting.

The operation of the central processing unit is described in detail as follows.

It is a block that executes control and program of data and on / off decision display of the whole system. It is composed of interface with CPU, RAM, power, and sub block.

The entire system is driven by a single 5V supply, simplifying the design of the supply.

Figure 6 shows the central processing block diagram.

The CPU used is 8751, which reduces the circuit size by eliminating ROM. RAM is used for data storage, a keyboard is used for user input, and an additional circuit is added for interfacing with the underlying block. In the controller, the CPU executes an instruction according to a program.

Figure 6 shows a diagram of the controller.

The LCD display is used to indicate various situations, and the keyboard is used to set the threshold and manual on / off mode using the interrupt of the CPU. When the keyboard is pressed, the CPU is interrupted and the CPU executes the interrupt routine if it can accept the interrupt.

The LCD can be used by directly connecting to the CPU with the addition of simple logic.

If the keyboard is pressed, it first checks which key was pressed, and if it is the corresponding key, performs the subroutine, otherwise returns to it and continue with the original work. The subroutine writes new data to the RAM and turns on / off the lighting if the mode is set.

The operation of the lighting control unit will be described in detail as follows.

The lighting controller receives a command from the CPU to operate the corresponding lighting device. Data from the CPU is written to the serial input / output unit, and the serial input / output unit outputs data to the connected decoder, decoded, and connected to the SSR. 6SSR is controllable at 5V. The switch is turned on when 5V is input to SSR and turned off when 0V is input. This means that the data written to the serial I / O can turn on / off the lighting. After the lighting is turned on / off in this way, the CPU stores new data in RAM and waits for new data to come in.

By the above operation, the present invention can control the indoor lighting individually according to the brightness of the indoor light to keep the indoor light in an optimal state and individually control the lighting fixtures according to the brightness of the light, and can be used for a long time in the office or at home. It automatically cuts off the power of lighting fixtures when moving, which saves energy.

Claims (2)

The illuminance sensor unit outputs the output voltage depending on the change in the external brightness. An infrared sensor unit for detecting a worker's position; A central processing unit for receiving and processing data of the illuminance sensor unit and the infrared sensor unit; An illumination control unit for controlling illumination according to a processing result of the central processing unit; Automatic illumination control device of the indoor lighting device, characterized in that consisting of a display unit for displaying the above process Initializing the CPU and the device, inspecting the supervisory block and comparing it with previous data, and turning on / off the corresponding power by using the changed data, saving the current lighting state, and inspecting the supervisory block again, the previous data And returning to the input of the comparing step with: Determining external illuminance by receiving the step value of initializing the CPU and the device and comparing the specified value with the step of determining the power on / off and displaying the current illuminance and detecting the external illuminance of the output value. A method for automatically adjusting the illumination of an indoor lighting device, characterized by consisting of steps back to the value.