JPS6322652B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a communication device. Vehicles (automobiles, trains) and reinforced steel houses are covered with metal plates or metal grids, and it is often difficult to communicate using radio waves inside and outside these rooms.

2. Description of the Related Art Recently, there has been a tendency for vehicles to handle an increasing amount of information, so it is often necessary to install or remove communication devices and data processing devices inside the vehicle.
In this case, it is necessary to drill holes in the vehicle body and electrically connect the devices inside and outside the vehicle body, but this work is not easy. Further, there may be cases in which these communication devices, such as TV receivers, telephones, anti-theft devices, etc., are to be installed in a house, or in which it is desired to be installed or removed. In such cases, the work is not easy.

The present invention was made in response to the need, and its purpose is to provide an easily attachable and detachable communication device for communicating inside and outside an electromagnetically shielded structure. The configuration includes an in-flight communication device having an input/output terminal disposed in an electromagnetically shielded structure, and a first light beam coupled to the input/output terminal of the in-flight communication device, respectively.
an electrical and a first electrical/optical conversion element, a second electrical/optical converter that is optically coupled to these elements via a light-transmissive portion of the structure, and a second electrical/optical converter disposed outside the structure; Optical/electrical conversion elements and these second
Communication is performed between the inside of the structure and the outside world via an external device electrically connected to the conversion element of the structure.

According to the communication device of the present invention, electrical input/output signals of an in-flight communication device inside an electromagnetic wave shielding structure of a vehicle are converted into optical signals, which are transmitted through a light transmitting body such as a windshield and optically transmitted. The combined optical signal is converted back into an electrical signal and electrically coupled to outside communication equipment, including electromagnetic antennas, so it is necessary to drill holes in the vehicle body or break through concrete walls to transmit the signal to the vehicle body or house. There is no longer any need for electrical wiring work to connect the inside and outside of the aircraft, and it has become possible to easily connect communication equipment inside and outside the aircraft. Furthermore, if the internal/external optical coupler to be attached to a window glass or the like is made of a suction type, it can be more conveniently attached and detached.

A communication device according to the present invention will be explained with reference to FIG. In Figure 1, 1 is an in-flight communication device, 2 is an electrical input signal line to the in-flight communication device, 3 is an electrical output line from the in-flight communication device, 4 is a first optical-electrical converter, and 5 is a glass board, 6 is a first electrical/optical conversion element, 7 is a second electrical/optical conversion element, 8 is a second optoelectrical conversion element, 9 is an electrical output line of the external processing section, 10 is external electrical output line to the processing section, 11
Reference numeral 12 indicates an external processing unit, an external antenna or an external measuring device, and arrows indicate inside and outside the aircraft.

In FIG. 1, an electrical signal from a communication device 1 inside the aircraft is output to a first electrical-to-optical conversion element 6, where it is converted into an optical signal. In the case of a car, this optical signal output is optically coupled to a second optical-to-electrical conversion element 8 provided oppositely across the rear windshield 5, and the optical signal output is converted into an electrical signal output. The signal is input to the external processing section 11, where the signal is processed as is, amplified, or as required, and then supplied to the external antenna and output as electromagnetic waves.

Next, when an input radio wave from a communication device in the outside world is induced in the antenna outside the aircraft, it is amplified into an appropriate signal and the output is inputted to the second electrical-to-optical conversion element via the line 9. Convert to optical signal and send to window glass 5
The signal is optically coupled to a first optical-to-electrical conversion element 4 placed opposite to each other with the signal in between, and is converted into an electrical signal and input to the in-flight communication device 1 via the line 2. In this case, the power necessary for the processing section 11 outside the machine shall be supplied by an independent power source such as a battery.

In the explanation of the above figure, examples in which 4, 6, 7, and 8 use photoelectric and electric/optical conversion elements have been explained, but in other embodiments, electricity is used in the on-board communication device 1 and the external processing section.・Built-in optical and optical/electrical conversion elements, lines 2, 3, 9, and 10 are composed of optical fibers, 4,
It is also possible to configure 6, 7, and 8 with optical couplers. When coupling via a glass window using only an optical coupler, an optical fiber is used instead of an electrical conductor, so the influence of external noise is further reduced. In yet another embodiment, one of the opposing devices across the glass plate 5 may be a simple optical coupler, and the opposing side may be a photoelectric conversion element or an electrical/optical conversion element.

In the above explanation, 12 has been explained in the case of communication using an external antenna, etc., but the external device transmits various physical quantities such as abnormalities in the road surface, speed, inter-vehicle distance, etc.
It may also be a sensor for measurement.

When handling measurement information, the in-flight communication device 1 may include a data processing device and a data display device. Further, in the present invention, the optically coupled element attached to the glass of a vehicle is not fixedly attached, but is detachably attached using a suction cup or the like, thereby further increasing its usefulness.

According to the communication device according to the present invention, there is no need for drilling holes in vehicles or houses to introduce electric wires, etc.
It can be installed immediately if necessary, and can be easily removed if necessary. Therefore, the installation work is easy, and it is also convenient when the communication device is a rental device or a device for temporary installation.

[Brief explanation of the drawing]

FIG. 1 shows a block diagram of a communication device according to the present invention. In the diagram, 1: in-flight communication device, 2, 3, 9, 1
0 is an electric or optical conductor, 4: first photoelectric conversion element, 5: window glass, 6: first electric or optical conversion element, 7: second electric/optical conversion element, 8: second Optical/electrical conversion element, 11: external processing section, 12: external antenna, respectively.

Claims (1)

[Scope of Claims] 1. An in-flight communication device having an input/output terminal disposed within an electromagnetically shielded structure, a first optical/electrical device coupled to the input/output terminal of the in-flight communication device, and a first an electrical/optical conversion element; a second electrical/optical conversion element and a second optical/electrical conversion element optically coupled to these conversion elements via the light-transmitting portion of the structure;
A communication device characterized in that communication is performed between the inside of the structure and the outside world via an external device electrically connected to these second conversion elements. 2. The first device characterized in that the electromagnetically shielded structure is a vehicle and the light transmitting portion is a window glass.
Communication device described in Section 1. 3. The in-flight communication device is a transmitter/receiver, and its input terminal is connected to a first optical-electrical conversion element, and its output terminal is connected to a first electric-optical conversion element, and the above-mentioned first optical-electrical conversion element is connected to the In this case, a second electricity-to-light conversion element is provided which is arranged to face each other through a window glass and is optically coupled, and the second electricity-to-light conversion element is coupled to the output of the external device. A second light-to-light conversion element is provided, which is arranged to face the first light-to-light conversion element through a window glass and optically coupled, and the second light-to-light conversion element is used as an input to an external device. 3. The communication device according to claim 2, wherein the in-flight transceiver is optically coupled to the external device to communicate with the outside world. 4 The first optical/electrical conversion element and the second electrical/electric conversion element
Optical coupling between the optical conversion elements and between the first electrical/optical conversion element and the second optical/electrical conversion element is achieved by an optical coupler placed facing each other through a window glass, 4. A communication device according to claim 3, characterized in that it is implemented using a continuous optical fiber. 5. The communication device according to claim 4, wherein the optical coupler is removably attached to a window glass. 6 The above-mentioned in-flight communication device is a receiver, and an optical-to-electrical conversion element is connected to the input terminal of the receiver, and an electric-to-optical conversion device is optically coupled to the optical-to-electrical conversion element through a window glass. 3. The communication device according to claim 2, wherein the electric/optical conversion element is attached to an output of an external device having a receiving antenna. 7. The communication device according to claim 1, wherein the on-board device includes a data processing device and a data display device, and the external device includes a sensor for detecting a physical quantity.