JPH04293328A - Automatic adjustment device for optical space transmission direction - Google Patents

Abstract

PURPOSE:To automatically adjust the transmission direction of each optical space transmitter by inputting a reception data received by a light receiving element of plural optical space devices and converted into an electric signal to an information processing unit respectively and allowing the information processor to control a gyro. CONSTITUTION:A transmission data 4A sent from a light emitting element 3A of one optical space transmitter 1A via a gyro 7A is received by m-sets of light receiving elements 5B1-5Bm of the other optical space transmitter 1B and converted into an electric signal. A reception data 6B being the electric signal is converted into a digital signal by m-sets of A/D converters 9B1-9Bm as a reception level signal and the signal is inputted to an information processor 8B. The processor 8B decides an optimum direction based on the reception level and a gyro 7B controlled by the processor 8B keeps an optimum direction of the other optical space transmitter 1B at all times. Furthermore, the optimum direction finding of the optical space transmitter 1B is accurately implemented.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic space optical transmission direction adjustment device for optical communication equipment that performs optical communication data transmission between space optical transmission equipment.

0002

2. Description of the Related Art FIG. 2 is a block diagram showing the configuration of an example of a conventional optical communication device. This conventional optical communication device converts electrical signal transmission data 2A, 2B into optical communication data 4A, 4B using light emitting elements 3A, 3B and transmits the data between two optical space transmission devices 1A, 1B. Optical communication is performed by receiving the transmitted optical communication data 4A, 4B by the light receiving elements 5A, 5B and converting the received data 6A, 6B into electric signals.

0003

[Problem to be Solved by the Invention] Setting the transmission direction of the optical space transmission devices 1A and 1B in the conventional optical communication device described above is done by a person deciding the optimum position at the time of setting. Changes are always made manually, so when installing devices 1A and 1B, the optimal direction for receiving optical communication data 4A and 4B and the direction for emitting light must be manually set, which takes a lot of time and There was a problem that positioning of the spatial transmission devices 1A and 1B could not be performed accurately. Furthermore, if there is an unintended positional shift, there is also the problem that data is transmitted with degraded transmission quality, especially at positions where the directivity angle is narrow.

0004

[Means for Solving the Problems] In order to solve the above-mentioned problems, the device of the present invention, as shown in FIG. 2A, 2B... are converted into optical communication data 4A, 4B... by light emitting elements 3A, 3B... and transmitted, and the transmitted optical communication data 4A, 4B... are received by each other. In an optical communication device that performs optical communication by receiving data by elements 5A, 5B, . . . and converting the received data into electric signals 6A, 6B, .
Optical communication data 4A, 4B... obtained by B...
gyros 7A, 7B, . ...and so on.

[0005]

[Operation] Electrical signal transmission data 2A, 2B... are transmitted to optical communication data 4A by light emitting elements 3A, 3B..., respectively.
, 4B, . . . and transmitted via the gyros 7A, 7B, . This transmitted optical communication data 4A, 4
B... are received by mutual light receiving elements 5A, 5B... and receive electric signal data 6A, 6B...
is converted to These received data 6A, 6B... are input to the information processing devices 8A, 8B..., respectively, and based on these, the gyros 7A, 7B... are controlled by the information processing devices 8A, 8B..., respectively. The transmission directions of the optical space transmission devices 1A, 1B, . . . are automatically adjusted.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing the configuration of one embodiment of the apparatus of the present invention. 1A and 1B are 2 that constitute an optical communication device.
2A and 2B are electric signal transmission data, 3A and 3B are light emitting elements that convert these transmission data 2A and 2B into optical communication data 4A and 4B, and transmit the data, 7A
, 7B is a gyro that adjusts the transmission direction of optical communication data 4A, 4B obtained by these light emitting elements 3A, 3B.

5A and 5B are optical communication data 4 of each other.
These light receiving elements 5A and 5B are each composed of n light receiving elements 5A1 to 5An and m light receiving elements 5B1 to 5Bn. . 9A and 9B are A/D converters that convert received data 6A and 6B into digital values (numerical values) as reception levels, and these A/D converters 9A and 9B are n A/D converters 9A1 to 9An, respectively. It consists of m A/D converters 9B1 to 9Bm.

8A and 8B are n A/D converters 9A1 to 9Am and m A/D converters 9, respectively.
The numerical values converted as reception levels obtained from B1 to 9Bm are input via interfaces 10A and 10B, and n light receiving elements 5A1 to 5An and m
The information processing device inputs the received data 6A, 6B obtained from the light receiving elements 5B1 to 5Bm, and includes a means for determining the optimal direction in which the reception level is maximized, and a means for determining the optimal direction in which the reception level is maximized, and a means for determining the optimal direction for each gyro 7A, 7B when the reception level reaches the maximum. It has means for instructing to stop these, and means for outputting control data 11A, 11B to inform each light emitting element 3A, 3B that the optimum direction has been determined.

[0009] Interfaces 10A and 10B are for transferring numerical values as reception levels obtained from n A/D converters 9A1 to 9An and m A/D converters 9B1 to 9Bm to information processing devices 8A and 8B, respectively. The memories 12A and 12B are for securing programs and data used in the information processing devices 8A and 8B, respectively.

[0010] In this embodiment having the above-described configuration, transmission data 2A of electrical signals to be transmitted from the optical space transmission device 1A is converted into optical communication data 4A by the light emitting element 3A, and transmitted via the gyro 7A. This optical communication data 4A is transmitted to m light receiving elements 5B1 of the optical space transmission device 1B.
~5Bm is converted into received electrical signal data 6B.

[0011] This received data 6B is converted into a digital value as a reception level by m A/D converters 9B1 to 9Bm, and is inputted to the information processing device 8B via the interface 10B, and the received data 6B is also input to this information processing device. It is input to 8B. While changing the direction of the optical space transmission device 1B, the information processing device 8B determines the optimal direction in which the smaller received level among the m received levels inputted thereto becomes the maximum, based on the received data 6B, and At this point, the gyro 7B is instructed to stop, and the optimal light receiving direction of the optical space transmission device 1B is set.

Here, the information processing device 8B outputs control data 11B indicating that the optimum direction of the optical space transmission device 1B has been determined together with the transmission data 2B sent to the light emitting element 3B, and the light emitting element 3B outputs the optical communication data 4B. Convert and send. The transmitted optical communication data 4B is converted into reception data 6A of electric signals by the n light receiving elements 5A1 to 5An of the optical space transmission device 1A.

This received data 6A is converted into a digital value as a received level by n A/D converters 9A1 to 9An, and is inputted to the information processing device 8A via an interface 10A and is processed by the control data 11A in the received data 6A. It is notified that the optimum direction of the optical space transmission device 1B has been determined. The information processing device 8A uses the timing of the control data 11A to set the optimum light receiving direction of the spatial optical transmission device 1A in the same manner as the method of determining the optimum light receiving direction of the spatial optical transmission device 1B.

In the present invention, one light-receiving element 5A and one A/D converter 9A, and one light-receiving element 5B and one A/D converter 9B of a plurality of optical space transmission devices 1A, 1B, . . . may be used. In this case, the information processing devices 8A and 8B of the optical space transmission devices 1A and 1B are configured to determine the optimal direction in which the reception level obtained from the A/D converters 9A and 9B is maximized. In addition, as in this embodiment, the light receiving elements 5A, 5B and the A/D converter 9A/9B
It is preferable to provide a plurality of each of them, because the optimum direction in which the smaller reception level among the plurality of reception levels is maximized is determined, and the number of trials can be reduced.

According to this embodiment, the optical communication daily 4A transmitted from the light emitting element 3A of one optical space transmission device 1A via the gyro 7A is transmitted to the m of the other optical space transmission device 1B.
The light receiving elements 5B1 to 5Bm receive the light and convert it into an electrical signal, and the reception data 6B of this electrical signal is transmitted to the m light receiving elements 5B1 to 5Bm.
/D converters 9B1 to 9Bm convert it into a digital value as a reception level, and this value is sent to the information processing device 8B.
The device 8B determines the optimum direction based on the reception level, and the gyro 7 controlled by the device 8B
B allows the other optical space transmission device 1 to be transmitted without human intervention.
The optimum direction of the optical space transmission device 1B can be maintained at all times, and the positioning of the optical space transmission device 1B in the optimum direction can be performed using the received data 6.
The level of B allows you to do it accurately. Further, in the same way, the optimal direction of one optical space transmission device 1A can be always maintained and its positioning can be performed accurately.

[0016]

As described above, according to the present invention, electrical signal transmission data 2A, 2B, etc. are transmitted between light emitting elements 3A, 3B, etc. between a plurality of optical space transmission devices 1A, 1B, etc.・
・The optical communication data 4A, 4B... are converted into optical communication data 4A, 4B... and transmitted, and the transmitted optical communication data 4A, 4B... are received by each other's light receiving elements 5A, 5B... and converted into electrical signals. In an optical communication device that performs optical communication by converting received data 6A, 6B..., optical communication data 4A, 4 obtained by each of the light emitting elements 3A, 3B...
Gyros 7A, 7B... that adjust the transmission direction of B...
and information processing devices 8A, 8B, etc. that control these gyros 7A, 7B, etc. based on the received data 6A, 6B, etc. of the electrical signals, so multiple optical space transmissions are possible. Light receiving elements 5A, 5B of devices 1A, 1B...
Received data 6A received by and converted into an electrical signal
, 6B, . . . are input to the information processing devices 8A, 8B, and based on these, the information processing devices 8A, 8B, . It becomes possible to automatically adjust the transmission direction of... Therefore, even if there is an unintended positional shift, data can be transmitted without degrading the transmission quality, even at positions where the directivity angle is particularly narrow.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of one embodiment of the device of the present invention.

FIG. 2 is a block diagram showing the configuration of an example of a conventional optical communication device.

[Explanation of symbols]

1A, 1B... Optical space transmission device 2A, 2B... Transmission data 3A, 3B... Light emitting element 4A, 4B... Optical communication data 5A, 5B... Light receiving element 6A, 6B... Received data 7A, 7B... Gyro 8A, 8B... Information processing device

Claims (3)

[Claims] [Claim 1] A plurality of optical space transmission devices (1A, 1B,
...), the electrical signal transmission data (2A, 2B
) is converted into optical communication data (4A, 4B...) by a light emitting element (3A, 3B...) and transmitted, and this transmitted optical communication data (4A, 4B...) is In an optical communication device that performs optical communication by receiving data from each other's light receiving elements (5A, 5B, . . . ) and converting the received data into electric signal reception data (6A, 6B, . . . ), each of the light emitting elements (3A, . , 3B...) obtained by optical communication data (
Gyro (7) that adjusts the transmission direction of
A, 7B...) and the reception data of each of the electrical signals (6
A, 6B...) based on these gyros (7A,
Information processing device (8A, 8B...) that controls the information processing device (7B...)
An automatic optical space transmission direction adjustment device consisting of ・). 2. The received data (6A, 6B...) of the electric signal obtained from each light receiving element (5A, 5B...) is converted into a digital value as a reception level, and ) input to the A/D converter (
9A, 9B...), and each information processing device (8A, 8
B...) includes a means to determine the optimal direction where the reception level is maximum, and a means to determine the optimal direction for each gyro (
7A, 7B...) to stop them, and control data (11A, 11B...) to notify each light emitting element (3A, 3B...) that the optimal direction has been determined.
.). The automatic spatial optical transmission direction adjusting device according to claim 1, further comprising means for outputting the following. Claim 3: Each optical space transmission device (1A, 1B...
) photodetector (5A, 5B) and A/D converter (9
3. The optical space transmission direction automatic adjustment device according to claim 2, wherein a plurality of each of A/9B) are provided.