JP2004364208A - Optical axis adjustment method for remote infrared ray communication system and apparatus therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical axis adjustment apparatus and an optical axis adjustment method for a remote infrared ray communication system capable of positioning a transceiver with a simple operation. <P>SOLUTION: A camera 15 for transmitting an image signal is mounted on either of at least a pair of transceivers 13, 14 arranged facing each other and takes photographs toward the other transceiver 14. The monitor of a computer terminal 20 receiving the image signal from the camera 15 displays the photographed image of the camera 15 in real time. The camera 15 and the transceiver 13 with the camera 15 mounted thereon are turned to change their directions until the image of a middle part of the other transceiver 14 is displayed on the center position of the monitor screen while the monitor screen is viewed. A camera with a zoom lens can be used for the camera 15, first photographs the object in a wide angle mode and then photographs the object next in a telescopic mode. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a remote infrared communication system that adjusts the optical axis of both transceivers by positioning the transceivers that are opposed to each other at an interval of 1 to 3 km when constructing a remote infrared communication system. The present invention relates to an optical axis adjusting method and an apparatus therefor.
[0002]
[Prior art]
As shown in FIG. 5, two transceivers 13 and 14 of the infrared communication system are arranged facing each other on the roofs of two buildings 10 and 11 separated from each other by about 1 to 3 km to perform communication between the two transceivers. This has been achieved. In this case, it is necessary to position the opposing transceivers 13 and 14 such that infrared rays are accurately emitted to the other transceiver.
[0003]
Conventionally, when performing this positioning, a signal is transmitted from one side to the other party, a signal is returned from the other party, and the transmission / reception level is optimized to optimize the transmission / reception level. Is checked, and then the correct direction of the transceiver is adjusted using a sighting device equipped with a telephoto lens or the like (Patent Document 1).
[0004]
[Patent Document 1]
JP-A-9-26840 [0005]
[Problems to be solved by the invention]
By the way, the conventional techniques as described above have the following problems to be solved.
The method of transmitting a signal from one side to the other party and detecting the return of the signal from the other party to optimize the transmission / reception level is time-consuming and inefficient. In addition, the method of using a sighting device with binoculars, telephoto lenses, etc., requires very advanced technology for its operation, and also performs position correction work while communicating wirelessly at each installation location of both transceivers. It had to be done and required two or more people with coordination skills.
[0006]
The present invention has been made in view of the above points, and an object of the present invention is to provide an optical axis adjusting device and an optical axis adjusting method for a remote infrared communication system that can perform positioning of a transceiver with a simple operation. I do.
[0007]
[Means for Solving the Problems]
The present invention employs the following configuration to solve the above points.
<Configuration 1>
A camera for transmitting an image signal is attached to one of at least one pair of transceivers arranged opposite to each other, an image is shot toward the other transceiver, and the image signal from the camera is received on a monitor of a computer terminal. The shooting screen of the camera is projected in real time, and the direction of the camera and the transceiver equipped with it is changed until the image of the center of the other transceiver is projected at the center position of the screen of the monitor. An optical axis adjustment method for a remote infrared communication system.
[0008]
For example, a digital camera mounted on the top of one of the transceivers captures an image of the other transceiver that is located at a distance of about 1 to 3 km. Then, while watching the image of the other transceiver on the monitor of a computer terminal such as a personal computer connected to the digital camera, the camera and the other camera are displayed until the image of the center of the other transceiver is displayed at the center position of the monitor screen. By turning the transmitter / receiver equipped with the appropriate direction and changing its direction, one of the transmitter / receivers is positioned. If necessary, the camera is mounted on the other transceiver, and the same operation is performed to position the other transceiver. In this way, the optical axis of the system is adjusted by positioning the transmitters of both transceivers so that infrared rays are accurately emitted to the other receivers.
According to this method, the work for positioning does not require a plurality of people at the same time. That is, it can be performed alone. In addition, compared to a positioning method using a conventional aiming machine, the operation is extremely easy, skill is not required, and positioning can be performed with high accuracy. In addition, since positioning is performed using only an image of the appearance of the other transceiver, the orientation of the other transceiver does not necessarily need to be positioned with high accuracy in the initial stage. That is, high-precision positioning can be performed only by the positioning operation of one of the transceivers. After the positioning work is completed, both may transmit and receive infrared light signals to optimize the final position.
[0009]
<Configuration 2>
In the optical axis adjustment method for a remote infrared communication system according to Configuration 1, a camera with a zoom lens is used as the camera, and the other transceiver is first photographed at a wide angle. When the direction is changed and a part of the image of the other transceiver is displayed on the monitor screen of the computer terminal, the camera is zoomed and the other transceiver is photographed in telephoto. The optical axis of the remote infrared communication system, wherein the direction of the camera and the transceiver equipped with the camera is changed until an image of the center of the other transceiver is displayed at the center position of the screen of the computer terminal. Adjustment method.
[0010]
This is an optical axis adjustment method when the direction of the transceiver is further finely adjusted as compared with the method of the first configuration.
For example, an image of the center of the other transceiver taken by a digital camera is projected at the center position of the monitor screen of the computer terminal, and after positioning to some extent, the image is zoomed up and the enlarged image is displayed. Based on the monitor screen of the computer terminal, the positioning adjustment is performed.
According to the method of Configuration 2, since the imaging is performed at a wide angle in the first stage, it is easy to catch the other remote transmitter / receiver, and then the imaging is performed at a telephoto position. It becomes possible to do.
[0011]
<Configuration 3>
Computer having a stand for supporting a transceiver, a camera mounted outside the transceiver and transmitting an image signal, and a monitor for receiving an image signal transmitted from the camera and displaying the same image as the camera in real time An optical axis adjusting device for a remote infrared communication system, comprising: a terminal; and a rotation mechanism disposed on the stand and configured to rotate the camera and a transceiver equipped with the camera.
[0012]
3 is an apparatus for performing the method of Configurations 1 and 2.
Any camera can be used as long as it can transmit a captured image as an electronic medium, and a digital camera, a video camera, or the like can be used. In order to rotate the camera and the transceiver mounted with the camera, for example, a stand supporting the transceiver is provided with a rotating mechanism including a well-known gear transmission and an electric motor for driving the same. Just fine. The rotating mechanism may be a mechanism for manually rotating the camera and the transceiver without using an electric motor.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described using specific examples.
FIG. 1 is a perspective view showing an apparatus for performing the method of the present invention.
In FIG. 1, the transmitter / receiver 13 has a built-in transmitter 13A and receiver 13B, and is supported by a stand 18 having a rod portion 26. The stand 18 is provided with a mounting bolt insertion hole 18A used for installation on the roof of a building or the like. The rod portion 26 of the stand 18 has an intermediate part separated into an upper part and a lower part, and is connected via a rotating mechanism 19 so as to be relatively rotatable. The rotating mechanism 19 includes a well-known gear transmission and an electric motor for driving the same, or is configured to rotate the upper part of the rod portion 26 by a manual rotation driving force of the well-known gear transmission. ing. Due to the rotation of the upper part of the rod part 26, the transceiver 13 attached to it is also rotated at the same time.
[0014]
A camera 15 is arranged above the transceiver 13, and is detachably mounted with a tightening screw 17. The front directions of the camera 15 and the transceiver 13 match each other. The camera 15 is a digital camera or a video camera, and has a function of transmitting a captured image as an image signal. The image signal is transmitted to a computer terminal 20 such as a personal computer connected via a communication cable.
The computer terminal 20 has a monitor that receives an image signal transmitted from the camera and displays a shooting screen of the camera in real time.
[0015]
The usage status of the above-described device will be described with reference to FIGS.
In FIG. 2, for example, a digital camera 15 for transmitting an image signal is attached to one of the two transceivers 13 and 14 arranged facing each other. The camera 15 photographs the direction of the transceiver 14 of the other party, transmits this image signal to the computer terminal 20, and projects the photographing screen of the camera on the monitor of the computer terminal in real time.
[0016]
FIG. 3 shows a state where an image signal transmitted from the camera 15 is projected on a screen of the computer terminal 20. That is, the situation shown in FIG. 2 is in the early stage of shooting, and the shooting range 16 of the camera is out of the installation position of the transceiver 14 of the other party. For this reason, as shown in FIG. 3A, the image 22 of the transceiver 14 of the other party is hardly reflected on the monitor screen of the computer terminal 20. Here, while watching the monitor screen, the rotation mechanism 19 is driven until the image of the center of the other transceiver 14 is displayed at the center position 24 of the monitor screen of the computer terminal 20 so that the upper part of the rod part 26 is displayed. The camera rotates and changes the direction of the camera and the transceiver on which the camera is mounted.
When the rotating mechanism 19 is driven electrically, a simulation is performed on a computer in which the center of the other transceiver shown on the monitor screen of the computer terminal is moved to the center position of the monitor screen. Based on this, the rotation mechanism may be automatically driven for a predetermined time by a timer built in the terminal.
[0017]
In the process of changing the directions of the camera and the transceiver, the image 22 of the other party's transceiver 14 shown in FIG. 3B is displayed on the monitor screen, and further, as shown in FIG. The image 22 at the center of the transceiver 14 is displayed. When the image shown in FIG. 3C is obtained in this way, the positioning of one transceiver 13 ends. Next, the camera 15 is attached to the other transceiver 14, and the operation is performed in the same manner as in the case of the transceiver 13 to position the transceiver 14.
[0018]
By using a camera with a zoom lens as the camera, the direction of the transceiver can be further finely adjusted.
That is, the camera is first shot at a wide angle, the camera 15 and the transceiver 13 are turned around, and when a part of the image of the other transceiver 14 is displayed on the monitor screen of the computer terminal 20, the camera 15 is zoomed. Then, the photographing of the other transceiver 14 is performed in telephoto. With the image enlarged at the telephoto, the camera 15 and the transceiver 13 are turned until the image of the center of the other transceiver 14 is projected at the center position 24 of the monitor screen of the computer terminal 20. Change the positioning adjustment.
According to this method, the wide-angle shooting is performed in the first stage, so that the other remote transmitter / receiver can be easily captured, and then the shooting is performed at the telephoto, so that high-precision positioning can be performed.
[0019]
After the positioning of the two transceivers 13 and 14 is completed, as shown in FIG. 4, the transmitters 13A and 14A emit infrared light to the receivers 13B and 14B of the other party to transmit and receive signals. Then, final position optimization is performed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a main part of an embodiment of an apparatus according to the present invention.
FIG. 2 is an explanatory diagram of a use situation of an embodiment of the present invention.
FIGS. 3A and 3B are views showing the usage of an embodiment of the present invention, wherein FIG. 3A is an explanatory diagram of an initial stage, FIG. 3B is an explanatory diagram of a middle stage, and FIG. 3C is an explanatory diagram of a final stage.
FIG. 4 is an explanatory diagram of a situation of a use result of one embodiment of the present invention.
FIG. 5 is an explanatory diagram of a remote infrared communication system.
[Explanation of symbols]
13, 14 Transceiver 15 Camera 18 Stand 19 Rotation mechanism 20 Computer terminal 26 Rod part

Claims (3)

A camera for transmitting an image signal is attached to one of the at least one pair of transceivers arranged facing each other, and an image is shot toward the other transceiver,
On the monitor of the computer terminal that has received the image signal from the camera, project the shooting screen of the camera in real time,
A remote infrared communication system, characterized in that the direction of the camera and the transceiver mounted with the camera is changed until an image of the center of the other transceiver is displayed at the center position of the screen of the monitor. Optical axis adjustment method. The optical axis adjusting method for a remote infrared communication system according to claim 1,
Using a camera with a zoom lens as the camera, first, perform the camera shooting of the other transceiver at a wide angle, change the orientation of one transceiver together with the camera, and on the monitor screen of the computer terminal, When a part of the image of the transceiver is displayed, the other camera is photographed in telephoto by zooming the camera, and in this state, the center of the other transceiver is positioned at the center position of the screen of the computer terminal. An optical axis adjusting method for a remote infrared communication system, wherein the camera and the transceiver mounted with the camera are changed in direction until an image of the unit is displayed. A stand for supporting the transceiver,
A camera mounted on the outside of the transceiver and transmitting an image signal;
A computer terminal having a monitor that receives an image signal transmitted from the camera and projects the same image as the camera in real time,
An optical axis adjusting device for a remote infrared communication system, comprising: a rotating mechanism disposed on the stand for rotating the camera and a transceiver mounted with the camera.

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