JPS60216641A - Optical transmission system for mobile body - Google Patents

Abstract

PURPOSE:To improve the safety by providing respectively plural optical transceivers to a basic station and a mobile body and forming plural optical transmission lines and also making the base station movable so as to prevent the sudden interruption of a signal. CONSTITUTION:The base station 6 is formed movable. The base station 6 is provided with a fitting stand 7 of an optical transceiver at the basic station. The optical transceivers 3, 8 are provided on the stand 7. On the other hand, the mobile body 10 is provided with a fitting stand 4 for optical transceiver. The optical transceivers 2, 5 are provided on the stand 4. Optical paths 9, 13 are provided between the base station 6 and the mobile body 10. When the mobile body 10 advances in the direction of arrow 12, the optical path 9 is shut by an obstacle 11. In this case, the mobile body 10 is stopped and the base station 6 is moved in the direction toward which the optical path 9 is recovered. Since all the optical paths are not shut and the communication is kept, the high safety is kept.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a transmission system for carrying out inter-vassal tracing between a crisis point and a mobile object such as a robot.

[Prior art]

In order to give commands to moving objects, such as robots, it is necessary to establish a communication system with a base station; in some cases, the use of light as the transmission means of No. 18 may be affected by signals such as interference. However, if a moving object enters the shadow of another device, the light will be cut off and communication will not be possible, so a system that can deal with this is needed.

Conventionally, as this type of device, Japanese Patent Application Laid-Open No. 58-146150
There is something shown in the publication. In this example, a large number of optical terminal satellites are installed on the indoor wall to avoid the influence of shadows.

FIG. 1 is a configuration diagram showing the conventional system, in which (1) is the wall of the room, (2) is the optical transceiver on the robot side, (3) is the optical transceiver on the base station side, (9) is the optical path, IJO is a robot, αη
is an obstacle, and @ is the moving direction of the robot α0 shown for explanation.

Now, as the robot 91 moves in the direction of arrow (2), the optical path (9) between the transmitters and receivers (2) and (3) is suddenly interrupted by an obstacle (b). In this case, if a large number of optical transceivers (3) on the base station side are installed on the wall (1),
It is possible to switch to another optical path and secure communication, but this increases the number of base stations, making it uneconomical.In nuclear power plants, etc., where there are many obstacles (b), there are actually countless base stations. would be required and would be difficult to implement. Therefore, in reality, signal interruption is unavoidable, signal interruption occurs suddenly, and communication is not possible during switching, making it unsafe.0 [Summary of the Invention] ] This invention was made for the purpose of eliminating the above-mentioned drawbacks of the conventional system, and by creating a structure in which the base station side can be moved, the number of base stations can be reduced, and the number of optical paths can be reduced by at least two or more. By doing so, it is possible to detect in which direction the base station should move to escape from the shadow, thereby providing an economical system that takes less time to restore communications.

[Embodiments of the invention]

An embodiment of the present invention will be described below.

In Figure 2, (4) is the optical transceiver mounting base installed on the robot GO, and (5) is the robot optical transceiver mounting base (
(4) is the second transceiver installed in the base station, (6) is the base station mobile body, (7) is the optical transceiver mount provided in the base mobile body (6), and (8) is the base station optical transmitter/receiver. The second optical transceiver 0 provided on the mounting base (7) is an optical transmission line between the second transceiver (5) and (8) on the robot side and the base station.

Further, FIG. 3 shows further details of the mounting base (7).

Here, for convenience of explanation, it is assumed that both the base station (6) and the robot 0Q move within a quadratic plane. Normally, the base station (6) is stopped and the robot QO moves in the required direction (arrow (2)).
(indicated by ). It is assumed that the optical transmitter/receiver mounts (4) and (7) are automatically controlled to always face each other as long as at least one optical path is maintained. That is, in FIG. 3, the mounting base (7) has a structure that allows it to rotate freely.

Now, the robot QO is moving in the direction of the arrow @.
When the optical path (9) is cut off by an obstacle αυ, Kazuya stops moving, while the basic crisis station (6) transmits the optical transmitter/receiver (8), which has two optical paths. ) side.

This movement of the base station (6) allows optical paths that would otherwise be lost to be recombined and to be recovered quickly. However, if the loss of the optical path is due to another moving object, the movement of the dangerous station (6) may result in the loss of a new optical path (@) even if the optical path (9) is restored. In such a case, it is preferable to stop all movements with an alarm and guide the base station (6) to another communicable location using a completely different judgment, for example, manual operation.

In the above embodiment, the case of moving within a secondary plane was explained, but when moving in a three-dimensional space, an optical transmitter/receiver (b) is provided, the number of optical paths is three or more, and the arrangement is arranged in a fourth direction.
A similar effect can be achieved by making it three-dimensional as shown in the figure.

Also, when moving within a secondary plane, use the optical transmitter/receiver mounting base (4
) (7) Only the base station mobile object (6) or robot) may be able to move three-dimensionally on the QO0
Also, by having one transmitter and multiple receivers, most of the objectives can be achieved.

〔Effect of the invention〕

As described above, according to the present invention, since the base station side is movable, the number of base stations can be reduced, which is economical.
Since there are two or more optical paths instead of one, there is no sudden interruption of the signal, and there are young fruits that are highly safe.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional optical space propagation system, FIG. 2 is a block diagram showing an example of an optical space propagation system according to the present invention, and FIG. 3 is a partially detailed diagram of an optical transceiver mount according to the present invention.
FIG. 4 is a partially detailed view showing another embodiment of the invention. In the figure, (1) is the wall of the room, (2) is the optical transceiver on the robot side, (3) is the optical transceiver on the base side, (4) is the optical transceiver mount on the robot side, and (5) is the temperature sensor on the robot side. 2 optical transceiver, (6) a mobile unit on the base station side, (7) a mounting base for the base station side optical transceiver, (8) an optical transceiver on the base station side,
(9) is the optical path, σQ is the robot, αp is the obstacle, (6)
(2) is the movement direction of the robot (for explanation) 40, and (2) is the second
This is the optical path of the optical transceiver. In addition, in each figure, the same reference numerals indicate the same or corresponding parts.〇 Agent Masuo Ohmaki Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] In a system in which 1U transmission is performed by optical space propagation between a moving object equipped with an optical transceiver and a base station, the base station is made movable, and the optical transceiver on the base station side and the optical transceiver on the moving object side are What is claimed is: 1. An optical transmission system for a mobile body, characterized in that at least two sets of people are equipped with an FC machine and at least two sets of optical transmission lines are formed.