JP2009008953A - Simultaneous control system of device unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for simultaneously controlling lots of device units, such as LED devices, individually. <P>SOLUTION: The system includes a plurality of device units and a projecting means. An optical sensor is mounted on each of the device units, an image is projected to each optical sensor from the projecting means, and the states of the device units can be changed according to the signals received by the optical sensors. In such a configuration, the plurality of device units can be simultaneously controlled individually without requiring a special control program. In addition, without recognizing the positional information of each of the device units, a specific instruction can be given to the device unit disposed in a specific position. That is, the device units can be controlled individually by the contrast of light of a projected image in a two-dimensional position or the wavelength of the light. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a simultaneous control system for device units using projection means such as a projector, and more particularly to an illumination control system such as illumination composed of a large number of light emitting diodes (LEDs) and a control system for home appliances. .

  In recent years, light emitting diodes (LEDs) have been used in various situations in daily life, from street signs, traffic lights to lighting equipment, taking advantage of low power consumption, long life and low heat generation. It has become to. In particular, street lighting such as Christmas trees and ornaments, and lighting art using LEDs such as wearable fashion have increased their expressive power as device technology has improved. The Christmas tree and night street illuminations that shine a lot of LEDs touch the hearts of people, and wearable fashion with multiple small LEDs as decorations has led to a richer expression.

  However, the LED control in the current lighting art is very simple, and only switching on / off and simple interaction using a microcomputer and a sensor are incorporated. In addition, when controlling a LED using a microcomputer, it is necessary to write a program to each LED device. For large-scale illuminations where the number of LED devices is in the thousands or tens of thousands, the LED devices must be individually It is impossible to control it. In order to write a program to each LED device, that is, to enable individual setting and individual downloading of the program, each LED device is identified one by one, the arrangement of each device is grasped, and each It requires a very complicated and time consuming task of preparing programs and downloading different programs, and a system platform. For this reason, it is difficult to apply to large-scale illumination.

  Such a problem is also a problem common to so-called ubiquitous devices, which have been a hot topic these days. The so-called ubiquitous device is a small wearable device and is used in the meaning that exists everywhere. When a large number of people move indoors and outdoors to carry ubiquitous devices, each ubiquitous device is identified one by one, the arrangement of each device is grasped, a program for each is prepared, and each program is further separated. It is not easy to download. There is a method of providing an ID (identifier) to each ubiquitous device and downloading the program by wireless communication. However, when the operation of the program changes depending on the arrangement of the device, the processing becomes very complicated and difficult. Ubiquitous devices capable of wireless communication have already been developed. These devices can control individual devices or perform the same control all at once, but it is difficult to perform separate control all at once.

  On the other hand, research is being conducted on using a projector as a means for providing information as well as merely projecting an image. For example, a drawing guide system using a projector assists a person who draws a picture by projecting an existing picture onto a canvas. In addition, there are researches on the provision of information by invisible light using a projector capable of projecting infrared light, as well as video information and text information superimposed on invisible grit-like data on the light emitted from the projector. Has been done.

  Invisible light using a projector capable of projecting infrared light can present information depending on the degree to which the information acquirer wants to acquire information. For example, for those who do not need certain information, Information is presented so as not to be noticed, and detailed information can be presented to a person who needs a large amount of information (see Patent Document 1).

  In addition, a technique for detecting a position in a space using a projector is also known (see, for example, Patent Document 2).

JP 2005-62748 A JP 2006-250554 A

  The present invention is aimed at improving the expressive power of large-scale illumination, and considering the convenience of controlling a large number of ubiquitous devices with the spread of future ubiquitous devices, device units such as a large number of LED devices are grouped together. The purpose is to provide a system that can be individually controlled.

  In order to achieve the above object, a device unit simultaneous control system according to a first aspect of the present invention is a system including a plurality of device units and a projection unit, and the device unit includes an optical sensor. An image is projected from the projection means, and the state of the device unit can be changed by the light reception signal of the optical sensor.

  With such a configuration, individual control of a plurality of device units can be performed simultaneously without a special control program. In addition, it is possible to give a specific instruction to a device unit arranged at a specific position without recognizing the position information of each device unit. That is, the individual device units are individually controlled according to the brightness of light at the two-dimensional position of the projected image or the wavelength of light. Here, the two-dimensional position means a case where individual device units are arranged on a wall surface or a flat road, or arranged on an illumination tree or the like.

Further, the device unit is not limited to a device equipped with a microcomputer that can perform digital processing, but may be an analog processing that includes only a circuit that operates with current and voltage. The optical sensor is appropriately selected according to the use and the scene to be used, such as one that responds to visible light and one that responds to infrared rays.
In addition, by providing a photoelectric element such as a solar cell in the device unit, it is possible to operate by generating and charging from light.

  The projecting means is capable of projecting an image. Specifically, a projecting device such as a projector is connected to an external output of a personal computer (PC). Further, the projected image includes not only a still image but also a moving image.

  When an image of a specific pattern is projected from the projection means, each device unit arranged at the two-dimensional position to be projected depends on the presence or absence of the light received by the respective optical sensor or the wavelength of the light. The circuit will operate / inactivate.

  As described above, the device unit simultaneous control system of the present invention can individually control a large number of device units such as LED devices simultaneously using a projection unit such as a projector.

  The device unit simultaneous control system according to the second aspect of the present invention is a system composed of a plurality of device units and projection means, wherein the device unit includes an optical sensor and a microcomputer. A configuration in which an image is projected from the projection means, the microcomputer stores the light reception signal pattern of the optical sensor, the microcomputer reproduces the light reception signal pattern of the optical sensor, and the state of the device unit can vary depending on the reproduced light reception signal pattern It is characterized by that.

  An optical sensor and a microcomputer are mounted on the device unit, and a light reception signal pattern of the optical sensor is stored and reproduced, and the state of the device unit is changed by the reproduced light reception signal pattern. That is, when an image of a specific pattern is projected from the projection means, each device unit arranged at a two-dimensional position to be projected stores the light pattern received by the optical sensor in the memory of the microcomputer. Then, the light and darkness of the received light is interpreted as a 1/0 bit string, and the microcomputer reads the preamble signal and command from the pattern and executes the program.

Here, in the simultaneous control system of the device unit according to the second aspect, it is preferable to project a pattern image of the communication control signal including at least reproduction of the received light signal pattern, stop of reproduction, and parameter setting from the projection unit to the optical sensor.
You can change the operation without rewriting the program by replaying / stopping the program of each device unit and setting parameters, and it is possible to set operation parameters for a large number of devices all at once. The maintainability can be improved.
Projecting the pattern image of the communication control signal means projecting a predetermined pattern (such as a Morse code) from the projection unit to the device unit as an image within a predetermined time.

Moreover, it is preferable that a projection means projects an infrared light. Infrared light is invisible light, and its presence cannot be recognized only with the naked eye, so that it is possible to prevent the surrounding people from noticing the presence of an image projected on the device unit. Note that ultraviolet light may be used as invisible light. Another reason for projecting invisible light is to avoid the problem that when the visible light is irradiated, the device unit is illuminated by the light projected, and the light emitting operation becomes difficult to understand when the device unit emits light. It can also be mentioned.
In addition, when invisible light is projected as the projecting means, the optical sensor mounted on the device unit needs to correspond to it.

  Specifically, the projection means is preferably a projector. By connecting the projector to the external display output of the PC, it is possible to easily construct the projection means. In addition, projectors usually project visible light, but some projectors project infrared, ultraviolet or X-ray invisible light. In addition, for example, by attaching a lens for an infrared transmission filter to a projector that projects visible light, the projector can easily project infrared rays.

  Further, the projection means may be a laser device that can change the irradiation direction. When the distance between the device unit and the projection means is increased, it is preferable to project laser light from the laser device. However, since the device unit is arranged at a two-dimensional position, the laser beam needs to be capable of changing the irradiation direction. Specifically, laser light is projected onto all device units while two-dimensionally scanning vertically and horizontally.

The device unit simultaneous control system has a configuration in which camera means is further mounted on the projection means, the camera means images the device unit, analyzes the captured image, and transmits the result to the projection means. It is preferable.
When the camera unit is mounted on the projection unit, it is possible to receive information from the device unit. For example, in order to provide information from the device unit, information from the device unit is received by making the blinking of the LED correspond to 1/0.

Specifically, the device unit in the simultaneous control system of the above-described device units is preferably an illumination unit, particularly an illumination unit composed of a light emitting diode (LED). In addition, examples of the illumination unit include a device unit using a lamp and a laser diode (LD).
In addition, a system in which the device unit is a home appliance unit and the operating state of the home appliance unit varies depending on the image projected from the projection unit is also preferably used.

  According to the device unit simultaneous control system of the present invention, a device unit equipped with an optical sensor and a projection means such as a projector can be used to control a large number of device units simultaneously or to coordinate the operation of a plurality of device units. To make it work. In addition to providing the operation pattern of each device unit using the projection means, it is possible to provide position information to each device unit, assign an individual address, and transmit a command by infrared communication.

Specifically, the device unit is an LED device, and by using an LED device equipped with an optical sensor and a projector, a large number of LED devices can be controlled simultaneously and the operations of multiple LED devices can be linked to display a figure. Make it possible. In addition to giving a pattern of LED device operation using a projector, it is also possible to provide position information to each LED device, assign an individual address, blink a light, and send a command by infrared communication. Furthermore, it is possible to receive information from each LED device by photographing the blinking of the entire LED device using the camera means, and to achieve bidirectional simultaneous communication between the system side operating the projector and the LED device side. .
In particular, this system allows simultaneous control of LED devices from a personal computer connected to a projector, so if you play music from a personal computer together, you can control the LED device according to the music, and attach a sensor or camera to the computer. For example, it can be controlled according to the movements of people and things. In addition, the operator of the personal computer can manually operate the control content and control timing (by mouse click or keyboard operation).

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the scope of the present invention is not limited to the following examples and illustrated examples, and various changes and modifications can be made.

  FIG. 1 shows a functional block diagram of the simultaneous control system of the device unit of the present invention. This system consists of two components on the device unit side and the projection means side. The device unit side is composed of devices such as light sensors and LEDs, while the projection means side is composed of a projection device such as a projector and a PC that sends image signals thereto.

Next, the operation of the system of FIG. 1 will be described.
First, an image signal is sent from the PC to the projection device connected to the external display output of the PC. Next, an image is projected from the projection device onto a device unit group including a plurality of device units. The optical sensor of each device unit performs a detection operation according to the presence / absence of light irradiation, light / dark or light reception wavelength at each position, and sends a signal to a device corresponding to the optical sensor. Each device changes its state according to a signal from the optical sensor. As a result, multiple device units can be individually controlled at once without any special control program, and at the same time, the device unit can be specified at a specific position without recognizing the position information of each device unit. This instruction can be given.
In the system that implements the functional block diagram of FIG. 1, the device unit side is often composed only of analog circuits that operate with current and voltage.

On the other hand, FIG. 2 shows a functional block diagram of the system when a microcomputer is mounted on the device unit. Unlike the functional block diagram of FIG. 1, there is a microcomputer on the device unit side, the microcomputer processes the signal of the optical sensor as input data, and outputs an operation signal corresponding to the signal to the device.
More specifically, the microcomputer stores the light reception signal pattern of the optical sensor, the microcomputer reproduces the light reception signal pattern of the optical sensor, and changes the state of the device unit according to the reproduced light reception signal pattern. That is, the light and darkness of the light received by the optical sensor is interpreted as a 1/0 bit string, and the microcomputer reads the preamble signal and command from the bit string and executes the program to change the state of the device unit.

  In the following embodiment, the operation and usefulness of the system will be described in detail while showing an application example using the device unit simultaneous control system of the present invention.

In the first embodiment, a simultaneous control system of device units using LEDs and optical sensors as device units and using a projector and a PC as projection means will be described.
FIG. 3 schematically shows a state in which a large number of device units are arranged in an illumination tree on the street and an image is projected from a location away from the tree using a projector and a PC. The projector uses a type that projects infrared rays. The distance between the tree and the projector is about 10 to 20 m. The projector is mounted and arranged at a high place such as a utility pole, and is connected to a PC as an operation terminal by a cable.

  As shown in FIG. 4, an image of “a picture of Santa Claus on a sled” is projected on a PC screen using a projector. Since it is projected by infrared rays, the projected image is not observed with the naked eye. Since a large number of device units are arranged in the tree, in the device unit on which an image of “a picture of Santa Claus on a sled” is projected, the light sensor operates and the LED state changes from off to on. . Depending on the circuit of the device unit, it can be considered that the light is turned off and blinks, the light is turned on after the light is turned off, and the light is turned on.

In this "picture of Santa Claus riding on a sled" image, the part of the picture (white part on the PC screen) is irradiated with infrared rays, but the background part (black part on the PC screen) is irradiated with infrared rays. Not irradiated. Accordingly, there are a large number of device units decorated in the tree that are irradiated with infrared rays and those that are not irradiated depending on the arrangement location. The state of the irradiated device unit will fluctuate (LED blinking or lighting), but the state of the device unit that is not irradiated will not change.
Note that the image of “the picture of Santa Claus on the sled” does not have to be a still image, and may be a moving image that changes in real time. By changing the state of the device unit in real time, the moving image can be reproduced as it is. Furthermore, the image need not be a binary image.
For example, even for an 8-color image, a full-color LED is used, and 8 colors are made to correspond to the wavelength band of light to be irradiated, and the state change corresponding to the wavelength band on the device unit side (eight color changes, actual By constructing a circuit of 7 colors change because one is turned off, a color image can be expressed by LEDs.

  As described above, by selecting an image on the projection means side, a large number of device units can be individually controlled at the same time. In addition, no special circuit or program is required for individual control.

  Similarly, as shown in FIG. 5, a character image of “Merry Christmas” is projected on a PC screen using a projector. In the character image of “Merry Christmas”, the background portion (white portion on the PC screen) is irradiated with infrared rays, but the character portion (black portion on the PC screen) is not irradiated with infrared rays. Accordingly, there are a large number of device units decorated in the tree that are irradiated with infrared rays and those that are not irradiated depending on the arrangement location. The state of the irradiated device unit changes (for example, the LED is lit), but the state of the device unit that is not irradiated remains unchanged. A character is not formed in the portion where the LED is lit, but the lit portion causes the character to be raised (the LED outside the outline of the character is lit).

Next, in the second embodiment, an application example of this system relating to wearable fashion in which a large number of device units are sewn on clothes will be described. Similar to the first embodiment, an LED and an optical sensor are used as a device unit, and a projector and a PC are used as projection means.
FIG. 6 schematically shows how a person wearing wearable fashion walks and moves on the stage and projects a PC image from the chest to the abdomen of the clothes. On the left side of the figure, the letter “M” is projected from the projector. On the right side of the figure, the letter “T” is projected from the projector. By projecting various images and characters on the wearable fashion wearing many LED device units in this way with a projector, each device unit on the wearable fashion senses the irradiation and displays the LED. It can be made.

  In the third embodiment, an example will be described in which an LED device unit on which an optical sensor and a microcomputer (microcomputer) are mounted is simultaneously controlled using a projector and a PC. As shown in FIG. 7, when light is emitted from a projector to an LED device unit on which an optical sensor and a microcomputer are mounted, the optical sensor senses the irradiated light, and the microcomputer stores the information. Based on the stored information, the LED is turned on or blinked. By using the projector in this way, the operation of the LED can be changed without rewriting the microcomputer.

  By arranging a large number of the device units and outputting characters and figures drawn in black and white from the projector, it is possible to easily display the characters and figures with LEDs as shown in FIG. In the method of writing the program individually to the microcomputer, when displaying characters and figures, it is necessary to perform a very laborious work of writing a separate program to each device in consideration of the position of each device. However, by using this system, it is possible to set the operation pattern according to the place where the LED is placed up to the resolution level of the projector. In addition, since programming that considers the position is unnecessary, display can be performed much more easily than before. Furthermore, by adding a memory to the microcomputer side, it is possible to save the pattern of the irradiated light and reproduce the moving image later.

  When the projected image is 30 fps (frames / second), the projector can perform communication at 30 bps (bits / second) or less, so that animations such as MPEG, still images, animations such as PowerPoint, Flash, and graphics can be played back. It becomes possible. If this method is used, even a person who has no knowledge of programs can easily display characters and figures with illumination simply by drawing on a personal computer.

  In addition, the irradiated light can be adapted to both visible light and infrared light by changing the sensor. A CdS (cadmium sulfide) sensor is suitably used as the visible light sensor, and a phototransistor is preferably used as the infrared sensor. In the case of using infrared rays, irradiation can be performed by using an infrared projector. However, some ordinary projectors emit infrared rays together with visible light, and infrared rays that cut light other than a specific wavelength in such projectors. By cutting visible light by using a filter, it is possible to irradiate the device unit with only infrared rays.

  It is assumed that illumination is usually used in some darkness. However, when visible light is irradiated by the projector, the LED is illuminated by the light of the projector, and the blinking becomes difficult to understand. Therefore, in the case where pattern transmission by light irradiation and LED operation are performed simultaneously, it is more appropriate to irradiate infrared rays using an infrared sensor. Further, as a control using invisible light, it is possible to use ultraviolet rays if a projector capable of emitting ultraviolet rays is manufactured.

  Furthermore, if a device equipped with full-color LEDs is spread, it is possible to play a moving image. The optical sensor can detect light but cannot detect color, but transmits RGB information of an image separately using three projectors. For example, as shown in Table 1 below, RGB is divided for each wavelength, and the value of each sensor is input to each RGB using a sensor corresponding to each wavelength. In this way, it is possible to reproduce the color by receiving it in three colors.

  In this way, using projectors, displaying messages with illumination, displaying pictures on the Christmas tree, playing images and videos with a large number of LEDs spread out, etc., a complex that could not be realized with conventional illumination It is possible to perform a proper operation.

  In addition to receiving a light pattern by a projector and LED blinking, it is also possible to send a command by blinking light. The command is transmitted by receiving the light brightness and darkness as 1 and 0 pulses by the microcomputer and interpreting them. An example of transmission is shown in FIG. For example, a black screen is projected for 1 second or longer, and the device 1 is notified of the start of command transmission by irradiating a set of 1 and 0 three times. One second later, data is transmitted by a normal method of serial communication. The data consists of a start bit, 8-bit information bits, parity, and stop bits. If you want to continue sending data, send it within 1 second. Here, the start bit and stop bit indicate the start and end of data, and the parity bit is for confirming whether data can be transmitted accurately. A command can be transmitted by making such a pulse wave readable by a microcomputer.

  In the case of a device equipped with an infrared sensor, a command can be transmitted by infrared communication. An infrared remote controller is often used as an infrared communication. An infrared remote controller transmits information to a device by placing a pulse wave on infrared light modulated to about 38 kHz. If the microcomputer can read infrared pulse waves generated by pressing buttons such as remote control ON / OFF, volume, recording, etc., LED on / off and volume (brightness) in the same way as TV operations. Recording (pattern storage) can be performed.

  An example of the command is shown in Table 2 below, and an example of the parameters in the command is shown in Table 3 below. Such a command is sent to the device by sending a 1-byte command ID and a 1-byte parameter as information in the manner described above.

  When handling a large number of device units, it is difficult to switch each device unit and adjust the volume using a variable resistor. However, if this method is used, even if the number of device units increases, if the device units are arranged in the range of the resolution of the projector, commands can be transmitted to them all at once.

Next, setting of the position information of the device unit will be described. By transmitting the above-described command, it is possible to give position information to the device unit. A plurality of LEDs are arranged and irradiated with a specific pattern of light. The optical sensor stores the blinking pattern of light in the microcomputer as position information represented by a bit string.
Here, when the command ID in Table 2 is 1 and the parameter in Table 3 is loc, that is, using “set loc val”, the value of “val” is set to blink the light of this specific pattern. The command gives position information to the device. For example, when 64 devices are arranged in 8x8, each device unit emits light of a different blinking pattern by irradiating light of six pattern images (1) to (6) as shown in FIG. The group of patterns that receive light and receive light becomes 2->4->8->16->32-> 64, and all devices can simultaneously acquire position information. This is because a command can be transmitted in a fixed time to device units arranged in the resolution range of the projector no matter how many device units are increased.

  Although acquisition of position information is a very important issue in ubiquitous devices, this system using a projector can be said to be a low-cost and high-performance technique in the usage situation of LEDs that can assume a certain degree of darkness. . In addition, by using this system, it is possible to assign individual addresses to individual devices. Addressing a large number of small devices is generally costly, but can be realized at a very low cost by using this system.

  Next, reception of information by using camera means will be described. It is possible to receive information from the device unit by photographing the blinking of the LED by the camera means. In the above description, information is transmitted by regarding the brightness of the light emitted from the projector as a 1/0 bit string, but providing information from the device unit side is performed by blinking the LED corresponding to 1/0. . Then, the system side information is received by photographing the blinking of the LED using the camera means. Even when information is received from a large number of devices by photographing with the camera means, information from all devices can be obtained simultaneously.

By receiving the blinking of the LED by the camera means, the sensor value and the address of each device unit can be obtained. The sensor value or address 1 is turned on and 0 is turned off, and the value is transmitted to the system side by blinking. By receiving the blinking by the camera means, the addresses and sensor values of all the device units can be received at the same time by the system side.
However, when there is a device unit with a sensor value or address of 0, only the device unit is not lit up and cannot be detected on the system side. Therefore, in order to solve the problem, parity bit 1 is given in addition to the bit string of the sensor value and address. By adding this 1 bit, a device unit having a value of 0 is also lit only once and can be detected.

  In receiving this information, the above-described command “get addr” (command ID = 2) is used. FIG. 11 shows an example of address reception when there are three device units (LED1, LED2, LED3). As in the case of acquisition of position information, even if the number of device units received is large, the information in a fixed time is not received for the device units arranged in the camera resolution range of the camera means. Reception is possible. The LED blinking speed is set in consideration of the frame rate of the camera means.

  Next, bidirectional communication using camera means and a projector will be described. FIG. 12 shows a schematic diagram of two-way communication using camera means and a projector in this system. As mentioned above, in addition to transmitting information from the projector to the device unit using the camera in this system, the camera can also receive information from the device unit, enabling simultaneous bidirectional communication between the system and the device unit. It becomes.

The device unit simultaneous control system of the present invention can be used in applications such as Christmas trees and illuminations in streets and homes, night illumination parades at theme parks, wearable fashion, and electric bulletin boards in towns.
Since this system can set the operation of individual LEDs by irradiating light with a projector, it can be used for various lighting arts in this way, so that it is easy to produce more complex and expressive light. It can be done.

  In addition, using this system, it is possible to sense only a specific place and answer a value by light or wireless communication, or drive only a sensor at a specific place to acquire data. For example, when a sensor is embedded in a wall, when a crack or discoloration occurs, it can be used to acquire information such as vibration response and humidity in the vicinity. In addition, this system gives sensor data with light to simulate a sensor network, or gives acceleration sensor data to a sensor device attached to a wall or floor with light. It can also be used for data propagation operation confirmation experiments.

  Furthermore, this system is useful for providing location information to sensors and sensor robots scattered on the floor. In the case of robots, it is possible to perform control such as arranging them in a line, gathering them in the center, arranging them in a wide array, or moving only some robots.

  In addition, this system plays sounds from a specific location, or places ubiquitous devices equipped with sound sources in clubs and live houses at various locations in the room so that the music and show progress from each location in the room. It is particularly useful for sound effects systems, such as making sounds at various times.

Functional block diagram of the device unit simultaneous control system of the present invention Functional block diagram of the system when a microcomputer is installed in the device unit Schematic diagram showing how many device units are placed in the tree and images are projected from a location away from the tree using a projector and a PC The figure which shows a mode that the picture image of "the picture which Santa Claus rides on a sled" is projected using a projector The figure which shows a mode that the character image of "Merry Christmas" is projected using a projector. Schematic diagram showing a person wearing a wearable fashion walking and moving, and projecting a PC image on the clothes with a projector The figure which shows the mode of control of LED with the projector The figure which shows the mode of the control which cooperates with respect to a lot of LED Example of command transmission Example of pattern image for obtaining device unit position information Time chart of command (eg get command) Schematic diagram of bidirectional communication using camera means and projector

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Device unit 2 Projection means 3 Optical sensor 4 Device 5 LED
6 Microcomputer
7 Projection device (projector)
8 PC
9 Camera 10 Tree 12 Trainer (clothing)

Claims (10)

  A system comprising a plurality of device units and projection means, wherein a light sensor is mounted on the device unit, an image is projected from the projection means on the light sensor, and a light reception signal of the light sensor is used to project the device unit. A simultaneous control system of device units characterized by changing states.   A system comprising a plurality of device units and projecting means, wherein an optical sensor and a microcomputer are mounted on the device unit, an image is projected onto the optical sensor from the projecting means, and the microcomputer A device unit simultaneous control system, wherein a light reception signal pattern is stored, the microcomputer reproduces the light reception signal pattern of the optical sensor, and the state of the device unit varies depending on the reproduced light reception signal pattern.   The device unit simultaneous control system according to claim 2, wherein a pattern image of a communication control signal including at least reproduction, reproduction stop, and parameter setting of a light reception signal pattern is projected from the projection unit to the optical sensor.   The device unit simultaneous control system according to claim 1, wherein the projection unit projects infrared light.   5. The device unit simultaneous control system according to claim 1, wherein the projecting unit is a projector.   5. The simultaneous control system of a device unit according to claim 1, wherein the projection unit is a laser device capable of changing an irradiation direction.   The camera means is mounted on the projection means, and the camera means images the device unit, analyzes the captured image, and transmits the result to the projection means. The simultaneous control system of the device unit described in 1.   The device unit simultaneous control system according to claim 1, wherein the device unit is a lighting unit, and a lighting state of the lighting unit varies depending on an image projected from the projection unit. An electrical decoration control system.   The illumination control system according to claim 8, wherein the illumination unit is configured by a light emitting diode (LED).   It is a simultaneous control system of the device unit in any one of Claims 1 thru | or 7, Comprising: The said device unit is a household appliance unit, The operating state of the said household appliance unit fluctuates with the image projected from the said projection means. Home appliance control system characterized by