JP2007318466A - Inter-car communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inter-car communication system to conduct an information transfer in each car of a train or among respective cars rapidly and efficiently by utilizing infrared rays. <P>SOLUTION: The inter-car communication systems are set up in respective coupling faces of a plurality of cars. A receiver 12 to receive infrared beams and a transmitter 13 to be connected to the receiver 12 and to transmit the infrared beams are set up to the coupling face of one end of the car. The receiver 16 to receive the infrared beams 14 transmitted from the transmitter 13 and the transmitter 17 to be connected to the receiver 16 and to transmit the infrared beams 18 toward the coupling face of one end of a followed car coupled to the car are set up to the coupling face of the other end of the car. A television set or the like to display an image by receiving the infrared beams transmitted from the transmitter 13 may be set up in the car. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a communication system in a train vehicle and between connected vehicles using an infrared communication device, and relates to an inter-vehicle communication system that can be widely used for a bullet train vehicle, a general commuter train vehicle, and the like. .

The train is operated while the conductor and the driver are always in contact. For this reason, the communication cable which connects between the connected vehicles is used. A communication cable used at a connecting portion of a vehicle needs strength and reliability to withstand vibration and external force. Therefore, the technique which performs communication in a train using an electromagnetic wave is also provided (refer patent document 1).
JP 2003-324377 A

Here, the conventional technique has the following problems to be solved.
Increasingly, conductors carry small computers (mobile terminals) for issuing tickets and managing reserved seats. The data created by the conductor by the ticket checking business or in-house ticket sales business may be stored in a computer, taken back to the conductor room, and uploaded from the terminal device of the communication network provided in the conductor room. This terminal device includes a wireless communication device, and communicates with the control center through an antenna laid along the track. However, in order to expand customer service and provide various information to passengers, a function of transmitting information from the control center to passengers in the vehicle in real time is desired. For this purpose, it is necessary to newly install a wireless LAN (local area network) or the like. However, when radio is used, the intensity of radio waves is suppressed in order to prevent leakage of interfering radio waves. Therefore, there is a problem that good communication is not frequently performed on railways with large external noise.

  The present invention has been made to solve the above-described problems, and provides an inter-vehicle communication system capable of quickly and efficiently transmitting information in each vehicle of a train or between vehicles using infrared rays. Objective.

In each embodiment of the present invention, the above-described problems are solved by the following configurations.
<Configuration 1>
An inter-vehicle communication system installed in a connecting portion of a vehicle, wherein a unit disposed on a connecting surface of one vehicle includes a transmitter that transmits an infrared beam to the other connected vehicle, and the other vehicle. A unit having a receiver for receiving an infrared beam and disposed on a connecting surface of the other vehicle includes a receiver for receiving an infrared beam transmitted from a transmitter of the one vehicle, and a receiver of the one vehicle. A vehicle-to-vehicle communication system comprising a transmitter for transmitting an infrared beam.

  Communication using a bidirectional infrared beam is performed at the connecting portion of the vehicle. This enables digital data communication between the vehicles without a connection cable. Since the upstream and downstream infrared beams are used independently, bidirectional communication is possible without a complicated signal separation circuit.

<Configuration 2>
In the inter-vehicle communication system according to Configuration 1, each of the units is formed by arranging the light emitting unit of the transmitter and the light receiving unit of the receiver so as to be aligned in a direction of the window glass of the vehicle. And a skirt-like sucker material that surrounds the periphery of the light receiving portion of the receiver and is in close contact with the window glass provided on the connecting surface of the vehicle.

  The light emitting part and the light receiving part are fixed to the opposing unit through the window glass by a skirt-like suction cup material that is in close contact with the window glass. The light emitting unit and the light receiving unit can be shielded from the outside air, and condensation of the light emitting unit, the light receiving unit, and the window glass can be prevented. Further, the light emitting part and the light receiving part can be stably fixed by the sucker material. Moreover, since the suction cup material elastically supports the light emitting part and the light receiving part, it has a cushioning effect.

<Configuration 3>
The inter-vehicle communication system according to Configuration 2, wherein a partition wall for blocking the infrared beam is provided between the light emitting unit of the transmitter and the light receiving unit of the receiver.

  For example, the peripheral edges of the light emitting part of the transmitter and the light receiving part of the receiver are surrounded by a separate skirt-like sucker material. Since the sucker partition is provided, the infrared beam output from the transmitter does not go around the receiver and interfere with communication.

<Configuration 4>
In the inter-vehicle communication system according to Configuration 1, a polarizing filter that transmits an infrared beam is disposed in each of the light emitting unit of the transmitter and the light receiving unit of the receiver arranged in the same direction, and the transmission The polarization angles of the polarizing filters arranged in the light emitting part of the transmitter and the light receiving part of the receiver are almost orthogonal to each other when viewed from the axial direction of the transmitted and received infrared beams, and the polarized light arranged in the light emitting part of the transmitter The polarization angle of the filter coincides with the polarization angle of the polarization filter arranged in the light receiving part of the receiver of the counterpart unit arranged opposite to the polarization angle of the polarization filter arranged in the light receiving part of the receiver. A vehicle-to-vehicle communication system characterized by being coincident with a polarization angle of a polarizing filter arranged in a light emitting part of a transmitter of a counterpart unit.

  There is a possibility that the infrared beam transmitted from the light emitting unit is reflected by the window glass of the opposite vehicle and input to the light receiving unit of the receiver of the same unit. In order to prevent this, the polarization angles of the polarizing filters of the light emitting unit of the transmitter and the light receiving unit of the receiver were adjusted.

<Configuration 5>
In the inter-vehicle communication system according to Configuration 1, the spread angle of the infrared beam transmitted from the light emitting unit of the transmitter and the mounting position of the unit are at least opposite receivers when the connecting surface of the opposing vehicle is at maximum displacement. The vehicle-to-vehicle communication system is selected so as to satisfy the condition that the infrared beam reaches the light receiving portion of the vehicle and the infrared beam is not directly emitted outside the connecting surface of the opposing vehicle.

  When a curve having the maximum curvature is bent, a state occurs in which the connecting surfaces of the opposing vehicles are displaced maximum. At this time, the divergence angle of the infrared beam is selected to be, for example, 5 to 20 degrees so that the infrared beam reaches at least the light receiving portion of the opposing receiver. On the other hand, when an infrared beam is directly radiated out of the connecting surface of the opposite vehicle, the disturbing infrared beam reaches other vehicles and other communication facilities along the track. Therefore, the divergence angle of the infrared beam and the mounting position of the unit are optimized and adjusted. As a result, communication using an infrared beam between vehicles is possible.

<Configuration 6>
A vehicle-to-vehicle communication system installed on each connection surface of a plurality of vehicles, the receiver receiving an infrared beam transmitted from a transmitter of another vehicle connected to the vehicle on one connection surface of the vehicle And a unit that is connected to the receiver and includes a transmitter that transmits an infrared beam to the inside of the vehicle. The infrared beam transmitted to the inside of the vehicle is connected to a connecting surface at the other end of the vehicle. A vehicle-to-vehicle communication system comprising a receiver for receiving and a transmitter connected to the receiver and transmitting an infrared beam toward another vehicle connected to the vehicle.

  It is a communication system that transmits an infrared beam in one direction between vehicles connected to a train. Here, the connecting surface of the vehicle is a surface facing the connected vehicle and has a window glass. A transmitter and a receiver are arranged to face each other through the window glass. In addition, if this system is provided for each one for upstream and downstream, bidirectional communication can be performed.

<Configuration 7>
In the inter-vehicle communication system according to Configuration 6, the transmitter has a television image signal superimposed on an infrared beam to be transmitted, and a television that receives the infrared beam and displays an image is disposed in the vehicle. A vehicle-to-vehicle communication system.

  The inter-vehicle communication system is preferably used for transmission of information necessary for operation. However, communication using infrared beams has a sufficiently wide bandwidth. Accordingly, it is possible to superimpose a television image signal on the infrared beam, perform a television broadcast in the vehicle, and transmit information such as advertisements and news to the passengers. This can be realized with only one-way communication.

<Configuration 8>
The inter-vehicle communication system according to Configuration 6, wherein the receiver that receives the infrared beam transmitted to the inside of the vehicle receives the infrared beam transmitted from the conductor PDA in the vehicle. Communications system.

  PDA (Personal Digital Assistace) is a personal portable information terminal having a personal computer function. Used for transmission of business information by the conductor. Business information can be managed by receiving the infrared beam transmitted by the conductor PDA.

<Configuration 9>
In the inter-vehicle communication system according to Configuration 6, a receiver that receives an infrared beam transmitted to the inside of the vehicle receives an infrared beam transmitted from a monitor camera disposed in the vehicle. Inter-vehicle communication system.

  When the monitor camera with an infrared transmitter is arranged at the upper part of the train door, the infrared beam is propagated along the ceiling of the vehicle. Therefore, the infrared video signal can be steadily transmitted without being obstructed by a human body or luggage. It is optimal as a communication system that transmits video signals for crime prevention and safety confirmation to specific locations inside and outside the train.

<Configuration 10>
The inter-vehicle communication system according to Configuration 6, wherein a transmitter that transmits an infrared beam to the inside of the vehicle at one end of the vehicle and a receiver that receives the infrared beam transmitted to the interior of the vehicle at the other end of the vehicle An inter-vehicle communication system characterized in that a light-transmitting pipe through which an infrared beam is inserted is provided between the two.

  It is advisable to provide a light-transmitting pipe at an arbitrary location so that the transmitted infrared beam is not blocked by a hanging advertisement or luggage in the vehicle. Since the light transmission pipe can transmit an infrared beam having an effective intensity by narrowing down, it may have a small diameter.

  Hereinafter, embodiments of the present invention will be described in detail for each example.

FIG. 1 is a side view of a train using the inter-vehicle communication system of the present invention, and FIG. 2 is a longitudinal sectional view of the vehicle.
As shown in the figure, the two vehicles 1 and 1 are connected by a connecting portion 2. Conventionally, a flexible cable has been used for communication between the vehicles at the connecting portion. On the other hand, in the present invention, inter-vehicle communication units 3, 4, and 5 are arranged on the connection surface of each vehicle 1. Each of these units includes an infrared beam transmitter and receiver. The unit 3 and the unit 4 communicate with each other using the infrared beam 11 at a connecting portion between the connected vehicles. Unit 4 and unit 5 communicate with each other using an infrared beam 14 in the vehicle. As will be described later, one-way communication and two-way communication are possible in the vehicle front-rear direction. The vehicle-to-vehicle communication system using the infrared beam 11 will be described in Embodiments 1 to 4. A vehicle-to-vehicle communication system using the infrared beam 14 will be described below in the fifth embodiment.

FIG. 3 is a plan view of the connected vehicles as seen from above.
As shown in this figure, the unit 3 and the unit 4 are fixed to the portion of the window glass 21 so that they can be seen through from both sides in the connecting portion 2 of the vehicle. The infrared beam 11 is transmitted and received through the window glass 21.

FIG. 4 is a perspective view of a unit installed at a connecting portion of the vehicle.
In this figure, one unit 4 is suspended and fixed from a ceiling portion at one end of the vehicle 1. In the figure, only the connecting surface of this vehicle is shown by a broken line. The two units 3 and 4 are arranged so as to face each other, and are suspended from the ceiling portion of each vehicle using a support bar 7. Further, the unit 4 is fixed so that one surface thereof is in close contact with the window glass 21 of the vehicle 1. The unit 3 is also fixed to the other vehicle in the same manner. In this example, the infrared beam 11 </ b> A is transmitted from the unit 3 to the unit 4, and the infrared beam 11 </ b> B is transmitted from the unit 4 to the unit 3. In this way, bidirectional communication is realized by using two independent infrared beams 11A and 11B.

FIG. 5 is an explanatory diagram of a configuration example of the unit, in which (a) is an exploded perspective view of the unit, and (b) is a side view of the unit fixed to the window glass.
The unit 3 includes a transmitter and a receiver inside. An infrared beam 11A is transmitted from the light emitting unit 3A of the transmitter to the other connected vehicle. In addition, the light receiving unit 3B of the receiver is irradiated with an infrared beam 11B from the other vehicle. The light receiving unit 3B of the receiver receives this infrared beam 11B.

  As shown in (b), the unit 3 is fixed in close contact with a window glass 21 disposed on the connecting surface of the vehicle. A skirt-like sucker material 8 is attached to the unit 3. The unit 3 is a unit in which the light emitting unit 3A of the transmitter and the light receiving unit 3B of the receiver are aligned in the same direction and are arranged side by side. The suction cup material 8 has a shape surrounding the periphery of the light emitting unit 3A of the transmitter and the light receiving unit 3B of the receiver. The suction cup material 8 is in close contact with the window glass 21 and fills the gap between the unit 3 and the window glass 21.

  The light emitting unit 3 </ b> A and the light receiving unit 3 </ b> B of the unit 3 do not have to be in close contact with the window glass 21. Since the gaps between the light emitting part 3A and the light receiving part 3B of the unit 3 and the window glass 21 are covered with the skirt-like suction cup material 8, it is possible to prevent the occurrence of condensation. The sucker material 8 is made of an elastic material such as rubber. Since the suction cup material 8 has elasticity, vibration transmitted from the window glass 21 to the unit 3 is absorbed. In this example, the periphery of the light emitting unit 3A of the transmitter and the light receiving unit 3B of the receiver are individually surrounded by the suction cup material 8. That is, the partition wall 8A is provided between them. Therefore, the infrared beam transmitted from the light emitting unit 3A does not enter the light receiving unit 3B.

FIG. 6 is an explanatory diagram of a modification of the light emitting unit and the light receiving unit of the unit.
In (a) of the figure, polarizing filters 9A and 9B are arranged in the light emitting part and the light receiving part of the unit 3, respectively. The polarization angles of the polarizing filter 9A disposed in the light emitting section of the transmitter and the polarizing filter 9B disposed in the light receiving section are substantially orthogonal to each other when viewed from the axial direction of the transmitted and received infrared beam. The configuration of the other unit is the same. The polarization angle of the polarizing filter 9A arranged in the light emitting part of the transmitter is made to coincide with the polarization angle of the polarizing filter 9B arranged in the light receiving part of the receiver of the counterpart unit arranged oppositely.

  In this way, the infrared beam communication between the transmitter and the receiver arranged opposite to each other is enabled, and the infrared beam transmitted by itself is prevented from jumping into the light receiving portion of the receiver that is reflected by the window glass. The example shown in FIG. 6B is also the same, and uses polarizing filters 9C and 9D whose polarization angles are inclined 45 degrees each other. Accordingly, the polarization angles of the polarizing filter 9C and the polarizing filter 9D are substantially orthogonal to each other when viewed from the axial direction of the transmitted and received infrared beam. This also prevents the jumping of the infrared beam by the same handling.

FIG. 7 is a plan view showing a state of the vehicle when traveling on a curve.
As shown in the drawing, when the two vehicles 1 and 1 travel along a curve, the connecting portion 2 is displaced on the connecting surface of the vehicles. In this case, if the transmitted infrared beam 11 does not reach the receiver of the opposite unit, data communication is interrupted.

FIG. 8 is an explanatory diagram showing the positional relationship between two units in the connecting portion of the vehicle.
(A) of a figure is the top view which looked at the part of the window glass 21A and 21B in the connection surface of a vehicle from the top. The unit 3 is tightly fixed to the window glass 21A. The unit 4 is tightly fixed to the window glass 21B. An infrared beam 11A is transmitted from the unit 3. An infrared beam 11B is transmitted from the unit 4. Thus, each infrared beam 11A, 11B has a certain spread angle. In the connecting portion where the distance between the vehicles is about 1 m, an angle of 5 degrees to 20 degrees was the optimum range.

  This infrared beam is preferably transmitted using an elliptical light emitting LED, for example. (B) is a characteristic diagram of an elliptical light emitting LED. As shown in the figure, the elliptical light emitting LED transmits a beam that is wide in the horizontal direction and narrow in the vertical direction. An elliptic lens that is long in the horizontal direction is integrated with the LED. The horizontal beam angle is α, and the vertical beam angle is β. α is preferably set to plus or minus 20 degrees, and β is preferably set to plus or minus 20 degrees. As a result, as shown in FIG. 7, even when the vehicle passes through a curve, the infrared beam is always irradiated to the light receiving unit of the opposing unit, and communication is not interrupted. Further, if the vertical beam angle that is not affected by the displacement is set small, there is an effect that unnecessary energy is not emitted in the vertical direction.

FIG. 9 is an explanatory diagram showing the state of the infrared beam when passing a curve.
As shown in this figure, for example, the infrared beam 11B transmitted from the light emitting section of the unit 4 has a predetermined spread angle, so that at least the receiver of the opposing unit 3 even when the connecting surface of the opposing vehicle is at maximum displacement. To the light receiving part. On the other hand, for example, when the distance between the connecting portions is 1 meter, if the spread angle α of the infrared beam 11B is too wide, the infrared beam 11B jumps out in the direction of the arrow X. This irradiates other trains passing each other with the infrared beam 11B, which causes various communication problems. Therefore, the spread angle α is limited to an angle at which light does not leak out. When the mounting position of the unit 4 approaches the side surface 1S of the vehicle, the infrared beam 11B jumps out in the direction of the arrow X even if the spread angle α is narrow. Therefore, it is preferable that the mounting positions of the units 3 and 4 are also determined so as to satisfy the condition that an infrared beam is not directly emitted outside the connecting surface of the opposing vehicle when the connecting surface of the opposing vehicle is maximum displaced.

FIG. 10 is a circuit block diagram of the inter-vehicle communication system as described above.
As shown in the figure, each vehicle 1, 1 has units 3, 4, 5, 6 disposed at both ends thereof. These units are all fixed to the connecting surface of the vehicle. Each has a receiver and a transmitter, and as shown in the figure, bidirectional communication in the direction of the arrow is possible. In this embodiment, communication between vehicles is performed by an infrared beam. The thick arrow is the infrared beam. In-vehicle communication is performed using a communication cable connecting the receiver and the transmitter. In this way, any two-way large-capacity digital data communication can be performed, for example, from the conductor of the conductor to the driver's vehicle or in the opposite direction.

FIG. 11 is an explanatory diagram illustrating an inter-vehicle communication system according to a fifth embodiment.
In the above embodiment, the system for transmitting and receiving digital data from the front to the rear end of the train vehicle or in the opposite direction has been described. However, the infrared beam has a very wide band and high information transmission capability. And even if it is radio | wireless communication and it uses several communication terminals, a branch connection part etc. are unnecessary. Therefore, it can be used for transmission / reception of data to / from various information devices provided in each vehicle.

  In the embodiment shown in the figure, a unit having two transmitters and two receivers is disposed on the connecting surface portion of each vehicle. All bidirectional digital data communication is performed using an infrared beam. That is, the infrared beam 11 transmitted from a vehicle (not shown) on the right side of the figure is received by the receiver 12. The signal becomes an infrared beam 14 by the transmitter 13 and propagates inside the vehicle. This infrared beam 14 is received by the receiver 16 at the left end of the vehicle 1. This signal is transmitted by the transmitter 17. The infrared beam 18 transmitted from the transmitter 17 is received by the receiver 19 of the adjacent vehicle. In this way, the infrared beam 14 transmitted from the transmitter 13 can be received inside the vehicle 1 by various information terminals and the data can be used. In addition, infrared beams transmitted from various information terminals existing inside the vehicle 1 can be received by the receiver 16 and the data can be used. This embodiment will be described below.

FIG. 12 is an explanatory diagram illustrating an inter-vehicle communication system according to a fifth embodiment.
This inter-vehicle communication system is installed on each connecting surface of a plurality of vehicles 10A, 10B, 10C, and is configured as follows. That is, a receiver 12 that receives the infrared beam 11 and a transmitter 13 that is connected to the receiver 12 and transmits the infrared beam 14 are installed on a connecting surface at one end of the vehicle 10B.

  The receiver 16 that receives the infrared beam 14 transmitted from the transmitter 13 is connected to the connecting surface at the other end of the same vehicle 10B, and the next vehicle 10C connected to the receiver 16 and connected to the vehicle 10B. A transmitter 17 for transmitting the infrared beam 18 is installed. A third receiver 19 is installed on the connecting surface at one end of the next vehicle 10C. The fifth embodiment introduces a one-way communication system, and the next sixth embodiment introduces a two-way communication system.

  A television 24 that receives the infrared beam 14 transmitted from the transmitter 13 and displays an image can be disposed in the vehicle. Therefore, various contents such as advertisements and news can be transmitted to the passengers through the television 24. In a conductor room (not shown), content distributed from the control center can be received, and the content can be transmitted to the televisions of all vehicles using an infrared beam.

  Further, the conductor can use the PDA 26 in the vehicle. The PDA 26 can receive the infrared beam 14 transmitted from the transmitter 13 and receive information related to the sale of a boarding ticket and the issue of a designated ticket. Further, when a boarding ticket or a designated ticket is issued in the vehicle, an infrared beam can be transmitted and received by the receiver 16. Therefore, it is possible to transmit information related to conductor operations in real time to the control center.

  Moreover, you may arrange | position the monitor camera 22 with an infrared transmitter in a vehicle. When the monitor camera 22 with an infrared transmitter is arranged at the upper part of the train door, the infrared beam can be transmitted to the receiver without being obstructed by a human body or luggage. Images captured by the monitor cameras 22 of all vehicles can be displayed on the display of the conductor compartment. In either case, if a transceiver is placed on the front and rear connection surfaces of the vehicle and infrared beams are transmitted and received using the space near the ceiling, good in-vehicle communication that does not require wiring becomes possible.

FIG. 13 is an explanatory diagram illustrating the inter-vehicle communication system according to the sixth embodiment.
This inter-vehicle communication system is installed on each connecting surface of a plurality of vehicles 30A, 30B, 30C, and is configured as follows. That is, the transmitter / receiver 32 that receives the infrared beam 31 from the vehicle 30A is arranged on the connecting surface at one end of the vehicle 30B. In addition, a transmitter / receiver 36 that transmits an infrared beam 49 to the vehicle 30A is disposed. The transceiver 32 has a receiver 33 and a transmitter 34. The transceiver 33 has a transmitter 37 and a receiver 38.

  A transmitter / receiver 42 that transmits an infrared beam 51 to the vehicle 30C is disposed on the connecting surface at the other end of the vehicle 30B. Further, a transceiver 45 that receives the infrared beam 50 from the vehicle 30C is arranged. The transceiver 45 transmits an infrared beam 48 into the vehicle 30B. The transceiver 42 has a receiver 43 and a transmitter 44. The transceiver 45 has a transmitter 46 and a receiver 47. Similarly, a receiver 52 and a transmitter 54 are provided on the connecting surface at one end of the vehicle 30C.

  In this embodiment, infrared beams are transmitted and received bi-directionally between a plurality of vehicles such as trains. Here, an arbitrary number of light-transmitting pipes 61 are arranged at arbitrary locations so that the transmitted infrared beam is not blocked by a hanging advertisement or luggage in the vehicle. The light transmission pipe 61 may be of a configuration that is substantially linear and reflects the infrared beam on the inner surface. It may be a metal pipe or a plastic pipe. For example, if only the infrared beam is allowed to pass and is not used in the vehicle, a light transmission pipe continuous from one end to the other end of the vehicle may be used. Since the pipe does not require strength or high reflection characteristics, the in-vehicle communication path can be formed at a very low cost.

  On the other hand, as described above, a discontinuous light pipe may be used to appropriately emit an infrared beam into the vehicle and receive an infrared beam transmitted from a terminal device in the vehicle. If a condenser lens is arranged at the input end of the infrared beam, the beam spread of the infrared beam can be compensated.

It is a side view of a train using the inter-vehicle communication system of the present invention. It is a longitudinal cross-sectional view of the vehicle using the communication system between vehicles of this invention. It is the top view which looked at the connected vehicle from the top. It is a perspective view of the unit installed in the connection part of vehicles. It is explanatory drawing of the structural example of a unit, (a) is a disassembled perspective view of a unit, (b) is a side view of the state which fixed the unit to the window glass. It is explanatory drawing of the modification of the light emission part of a unit, and a light-receiving part. It is a top view which shows the state of the vehicle at the time of drive | working a curve. It is explanatory drawing which shows the positional relationship of the two units in the connection part of a vehicle. It is explanatory drawing which shows the state of the infrared beam at the time of curve passing. It is a circuit block diagram of the above-mentioned communication system between vehicles. It is explanatory drawing which shows the communication system between vehicles of Example 5. FIG. It is explanatory drawing which shows the communication system between vehicles of Example 5. FIG. It is explanatory drawing which shows the communication system between vehicles of Example 6. FIG.

Explanation of symbols

1 Vehicle 11, 14, 18 Infrared beam 12, 16, 19 Receiver 13, 17 Transmitter

Claims (10)

A vehicle-to-vehicle communication system installed at a connecting portion of a vehicle,
The unit arranged on the connecting surface of one vehicle has a transmitter that transmits an infrared beam to the other connected vehicle, and a receiver that receives the infrared beam from the other vehicle,
The unit arranged on the connecting surface of the other vehicle has a receiver for receiving an infrared beam transmitted from the transmitter of the one vehicle and a transmitter for transmitting an infrared beam to the receiver of the one vehicle. A vehicle-to-vehicle communication system. The inter-vehicle communication system according to claim 1,
Each unit is formed by aligning the light emitting unit of the transmitter and the light receiving unit of the receiver in the direction of the window of the vehicle, and surrounds the periphery of the light emitting unit of the transmitter and the light receiving unit of the receiver. A vehicle-to-vehicle communication system comprising a skirt-like suction cup material that is in close contact with the window glass provided on the connecting surface of the vehicle. The inter-vehicle communication system according to claim 2,
A vehicle-to-vehicle communication system, wherein a partition wall for blocking the infrared beam is provided between a light emitting unit of the transmitter and a light receiving unit of the receiver. The inter-vehicle communication system according to claim 1,
Polarizing filters that transmit infrared beams are respectively arranged in the light emitting unit of the transmitter and the light receiving unit of the receiver arranged in the same direction, and the light emitting unit of the transmitter and the light receiving unit of the receiver are arranged in the same direction. The polarization angles of the arranged polarizing filters are almost orthogonal to each other when viewed from the axial direction of the transmitted and received infrared beam,
The polarization angle of the polarization filter disposed in the light emitting section of the transmitter matches the polarization angle of the polarization filter disposed in the light receiving section of the receiver of the counterpart unit disposed opposite to the transmitter.
The polarization angle of the polarization filter arranged in the light receiving part of the receiver is the same as the polarization angle of the polarization filter arranged in the light emission part of the transmitter of the counterpart unit arranged opposite to each other. system. The inter-vehicle communication system according to claim 1,
The spread angle of the infrared beam transmitted from the light emitting unit of the transmitter and the mounting position of the unit are such that the infrared beam reaches at least the light receiving unit of the opposing receiver when the connecting surface of the opposing vehicle is displaced maximum. The vehicle-to-vehicle communication system is selected so as to satisfy the condition that the infrared beam is not directly emitted outside the connecting surface of the opposing vehicle. An inter-vehicle communication system installed on each connection surface of a plurality of vehicles,
A receiver that receives an infrared beam transmitted from a transmitter of another vehicle connected to the vehicle, and a receiver that is connected to the receiver and transmits the infrared beam to the interior of the vehicle, on a connecting surface at one end of the vehicle Install a unit that includes a transmitter
A receiver for receiving an infrared beam transmitted to the inside of the vehicle on a connecting surface at the other end of the vehicle, and an infrared beam directed to another vehicle connected to the receiver and connected to the vehicle. An inter-vehicle communication system comprising a transmitter for transmission. The inter-vehicle communication system according to claim 6,
An inter-vehicle communication system, wherein the transmitter superimposes a television image signal on an infrared beam to be transmitted, and a television for receiving the infrared beam and displaying an image is disposed in the vehicle. The inter-vehicle communication system according to claim 6,
The inter-vehicle communication system, wherein the receiver that receives the infrared beam transmitted to the inside of the vehicle receives the infrared beam transmitted from the conductor PDA in the vehicle. The inter-vehicle communication system according to claim 6,
The inter-vehicle communication system, wherein a receiver that receives an infrared beam transmitted to the inside of the vehicle receives an infrared beam transmitted from a monitor camera disposed in the vehicle. The inter-vehicle communication system according to claim 6,
An infrared beam is inserted between a transmitter that transmits an infrared beam into the vehicle at one end of the vehicle and a receiver that receives the infrared beam transmitted into the vehicle at the other end of the vehicle. A vehicle-to-vehicle communication system characterized in that a light transmission pipe is provided.

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