JP2000349775A - Vehicle information transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle information transmitter which makes a loop-back transmission line unnecessary. SOLUTION: Vehicle information of a car of one other number by an information reception means for other-number vehicle 12 is received from a transmission line 8a, vehicle information of a car of its own number is added, and the vehicle information is transmitted to a transmission line 8b by an information transmission means for its own number vehicle 13. On the other hand, the vehicle information is received from a transmission line 9a by an information reception means 15 for other-number vehicle, the vehicle information of its own number vehicle is added by an information transmission means 16 for its own number vehicle, and the vehicle information is transmitted to the transmission line 9b. At the same time, reception detection means 11 and 14 are connected to the transmission lines 8a and 9a, respectively, reception from other-number vehicle is detected and, when there is no reception, the vehicle information of its own vehicle is periodically transmitted by the information transmission means 13 and 16 for its own-number vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle information transmitting apparatus having means for transmitting and receiving vehicle control information (hereinafter referred to as vehicle information) between each car.

[0002]

2. Description of the Related Art FIG. 5 is a block diagram showing an inter-vehicle transmission control system in a train described in Japanese Patent Application Laid-Open No. 1-274602. In FIG. 5, 1 is a vehicle, 1 to N
There is even a car. Reference numeral 2 denotes a vehicle information transmission device mounted on each vehicle. Reference numeral 3 denotes a closed-loop transmission path connecting the vehicle information transmission device 2. In order to construct the closed loop transmission path 3, car 1 and car N are provided with folded transmission lines TW11, TW
31 is required.

FIG. 6 is a diagram showing a flow of information in a conventional vehicle information transmission device. In FIG. 6, reference numerals 2 and 3 are the same as those in FIG. 4 is another car information receiving means for receiving information of another car, 5 is own car information creating means for creating information of own car, and 6 is own car which transmits information of the other car by adding information of own car. Information transmission means,
6 constitutes the vehicle information transmission device 2. In the vehicle information transmitting apparatus having the configuration shown in FIG. 6, an arbitrary car (in this case, the first car) transmits its own car number and vehicle information to the second car. The second car adds the car number and the vehicle information created for the own car to the received vehicle information and transmits it to the next car. The last car adds the car number and the vehicle information created by the own car to the received vehicle information and transmits it to the first car. N for car 1
By receiving the information from the car, the formation status and the vehicle information of each car are received.

[0004]

In the vehicle information transmission apparatus having the configuration shown in FIG. 5, a folded transmission line is required to form a closed loop. Therefore, a car with a new vehicle information transmission device cannot be connected to the first car and the Nth car. Further, it is impossible to make the first car and the Nth car as an intermediate vehicle without deleting the return transmission line.

In the configuration shown in FIG. 6, when the second car transmits vehicle information to the first car, the third car → the fourth car → the fifth car → N
There is a problem that it takes a long route from the first car to the first car, and it takes time to reach the data. In addition, since the information of the own car can be transmitted from any car, the timing of simultaneously transmitting each car is continuously generated. If they are transmitted at the same time, the load in the network increases, overflowing the processing capabilities of the own car information transmitting means and the other car information receiving means, and the transmission and reception become impossible.

The present invention has been made to solve the above-described problems, and has as its primary object to obtain a vehicle information transmission device having a short data arrival time. It is a second object of the present invention to provide a vehicle information transmission device that does not require a folded transmission line. A third object is to obtain a vehicle information transmission device that avoids simultaneous transmission of each car.

[0007]

In a vehicle information transmission apparatus according to the present invention, vehicle information of another car is received from a first transmission path for transmitting information in a first direction from a first car to a last car. First other car information receiving means, and first own car information transmitting means for transmitting vehicle information of the own car to the first transmission path, and vehicle information in a second direction from the last car to the first car. Second second car information receiving means for receiving vehicle information of the other car from the second transmission path for transmitting the second car information transmitting means for transmitting the vehicle information of the own car to the second transmission path It is provided. In addition, the vehicle has own car information creating means for creating vehicle information of the own car, and the first own car information transmitting means and the second own car information transmitting means transmit the vehicle information created by the own car information creating means. Things.

[0008] Further, there is provided first reception detecting means connected to the first transmission path for detecting the presence or absence of reception of vehicle information from another car, and receiving the vehicle information from another car by the first reception detection means. Is detected, the first own car information transmitting means adds the vehicle information of the own car to the vehicle information of the other car received by the first other car information receiving means, and transmits the first car information. When the reception detection means does not detect the reception of the vehicle information from the other car, the vehicle information of the own car is transmitted at predetermined time intervals. The vehicle further includes a second reception detecting unit connected to the second transmission path to detect whether vehicle information is received from another car, and the second reception detecting unit detects reception of vehicle information from another car. The second own car information transmitting means transmits the vehicle information of the own car added to the vehicle information of the other car received by the second other car information receiving means, and transmits the second reception detection information. When the means does not detect reception of vehicle information from another car, the vehicle information of the own car is transmitted at predetermined time intervals.

Further, the first reception detecting means and the second reception detecting means make no detection when there is no reception of vehicle information from another car for a predetermined time. The first reception detecting means mounted on the first car does not detect reception of vehicle information from another car.

Furthermore, the second reception detecting means mounted on the last car does not detect reception of vehicle information from another car.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a block diagram showing a vehicle information transmission device according to Embodiment 1 of the present invention. In the figure, reference numeral 1 denotes a vehicle, which is a leading car 1
There is from car No. to car No. N which is the last car. Reference numeral 2 denotes a vehicle information transmission device mounted on each vehicle. Reference numeral 8 denotes a first transmission line connecting the vehicle information transmission devices 2 of the respective cars and transmitting the vehicle information in the first direction from the first car to the Nth car, and 9 denotes a vehicle information transmission apparatus 2 of each car.
And a second transmission path for transmitting from the car N to the car 1 in the second direction. Since each car can have the same configuration, addition and division can be easily performed.

FIG. 2 is a configuration diagram showing a vehicle information transmission apparatus according to Embodiment 1 of the present invention. In the figure, reference numeral 2 is the same as that in FIG. 8a and 8b are partial transmission lines of the first transmission line 8, and 9a and 9b are partial transmission lines of the second transmission line 9. 10 is own car information creating means for creating information of the own car, 11 is first reception detecting means connected to the transmission path 8a and detecting reception of vehicle information from an adjacent car, and 12 is connected to the transmission path 8a. A first other car information receiving means for receiving information of another car, 13 is a transmission line 8
This is a first car information transmitting means connected to the terminal b and transmitting information about the own car. Reference numeral 14 denotes second reception detecting means connected to the transmission line 9a and detecting reception of vehicle information from an adjacent car, and reference numeral 15 denotes second other car information connected to the transmission line 9a and receiving information of another car. The receiving means 16 is a second car information transmitting means connected to the transmission line 9b and transmitting information about the car. 10 to 16 constitute the vehicle information transmission device 2. FIG. 3 is a diagram showing processing in the own car information transmission means of the vehicle information transmission device according to the embodiment of the present invention. FIG. 4 is a diagram showing processing in the reception detecting means of the vehicle information transmission device according to the embodiment of the present invention.

Next, the operation will be described. In FIG. 2, in the process of the second car, the vehicle information of the first car is received from the transmission path 8a, and the vehicle information of the second car is added to the received information and transmitted to the third car via the transmission path 8b. Also, the transmission line 9
The information of the car N is received from the car 3 from a, and the information of the car 2 is added to the received vehicle information, and the information is transmitted to the car 1 via the transmission line 9b. FIG. 3 shows a state of processing in the own car information transmitting means. When the reception detecting means 11 and 14 are in the state of the reception detection, the information of the own car is added to the received information of the other car and transmitted after waiting for the information of the other car. When the reception detection means 11 and 14 are in a state of no reception detection,
The information of the own car is transmitted at a constant cycle without waiting for the information of the other car. (Here, A second cycle). Therefore, it is possible to prevent simultaneous transmission from the vehicle even when there is no reception of the vehicle information of the other car. FIG. 4 shows a state of processing in the reception detecting means. If there is no detection of reception several times (here, 5 times) the own car information transmission cycle, no detection is performed. If the reception is detected even once, the state is that the reception is detected.

In the case of the first car, the vehicle information is not received from the transmission line 8a, so that no reception is detected, and the own vehicle information transmitting means 13 transmits the vehicle information from the transmission line 8b at regular time intervals. Will continue to do so. In the case of the Nth car, there is no reception of the vehicle information from the transmission path 9a, so that there is no reception detection, and the own car information transmission means 16 continues to transmit the vehicle information from the transmission path 9b at fixed time intervals. Become.

If car 0 is connected before car 1,
Car No. 0 becomes the leading car, so the car No. 0 reception detection means 11
Indicates that there is no detection of reception from the transmission line 8a,
The car number information transmitting means 13 of the car number transmits the vehicle information of the car number 0 to the transmission line 8b at regular intervals. At this time, the reception detection means 11 of the first car detects the reception, and the own car information transmission means 13
Is in a state of waiting for other car information from car 0. In this way, the number 0 car can be easily added. If Car 1 is split, Car 2 will be the new leading car and 2
The reception of the vehicle information from the transmission line 8a of the car no longer occurs, and the reception detection unit 11 is in a state of no detection. At this time, 2
The car number information transmission means 13 of the car number transmits the vehicle information of the car number 2 to the car number 3 via the transmission line 8b at regular time intervals. Thus, the division of the first car can be easily performed. As a result, a system is constructed in which the first car transmits the vehicle information of the own car to the No. N side and the No. N car transmits the vehicle information of the own car to the first car side, and the intermediate car receives the information and transmits the information of the own car. . In the above-described embodiment, the first transmission line 8 and the second transmission line 9 are described as separate ones for ease of description. It can also be applied to a system that shares.

[0016]

Since the present invention is configured as described above, it has the following effects. First other car information receiving means for receiving vehicle information of another car from a first transmission path for transmitting information in a first direction from a first car to a last car, and A first own car information transmitting means for transmitting vehicle information, and a second receiving car information of another car from a second transmission path for transmitting vehicle information in a second direction from the last car to the first car. Since other car information receiving means and the second car information transmitting means for transmitting the car information of the own car to the second transmission path, the vehicle information can be transmitted and received separately in two directions, all To the vehicle at the shortest distance. In addition, the vehicle has own car information creating means for creating vehicle information of the own car, and the first own car information transmitting means and the second own car information transmitting means transmit the vehicle information created by the own car information creating means. Therefore, transmission can be performed in two directions using one own car information creating unit.

[0017] Further, there is provided first reception detecting means connected to the first transmission path for detecting the presence or absence of reception of vehicle information from another car, and receiving the vehicle information from the other car by the first reception detection means. Is detected, the first own car information transmitting means adds the vehicle information of the own car to the vehicle information of the other car received by the first other car information receiving means, and transmits the first car information. When the reception detection means does not detect the reception of the vehicle information from the other car, the vehicle information of the own car is transmitted at predetermined time intervals, so that simultaneous transmission to the first transmission path can be avoided. The vehicle further includes a second reception detecting unit connected to the second transmission path to detect whether vehicle information is received from another car, and the second reception detecting unit detects reception of vehicle information from another car. The second own car information transmitting means transmits the vehicle information of the own car added to the vehicle information of the other car received by the second other car information receiving means, and transmits the second reception detection information. When the means does not detect the reception of the vehicle information from the other car, the vehicle information of the own car is transmitted at predetermined time intervals, so that simultaneous transmission to the second transmission path can be avoided.

Further, the first reception detection means and the second reception detection means make no detection when there is no reception of vehicle information from another car for a predetermined time, so that it is possible to reliably determine that there is no detection. . In addition, since the first reception detection means mounted on the first car does not detect the reception of vehicle information from other cars, the return transmission line of the first car can be unnecessary, and additional vehicles can be added to the first car. Can be split.

Furthermore, the second reception detecting means mounted on the last car does not detect the reception of vehicle information from another car, so that the return transmission line of the last car can be omitted, and The addition and division of vehicles can be done on the tail car.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a vehicle information transmission device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing a vehicle information transmission device according to Embodiment 1 of the present invention.

FIG. 3 is a diagram showing processing in the own car information transmitting means of the vehicle information transmitting apparatus according to the first embodiment of the present invention.

FIG. 4 is a diagram showing processing in reception detection means of the vehicle information transmission device according to the first embodiment of the present invention.

FIG. 5 is a block diagram showing a conventional vehicle information transmission device.

FIG. 6 is a configuration diagram illustrating a conventional vehicle information transmission device.

[Explanation of symbols]

8, 9 transmission line, 10 own car information creation means, 11, 1
4 reception detecting means, 12, 15 other car information receiving means,
13, 16 Own car information transmission means.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenshige Emoto 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Masayuki Takeyama 2-3-2 Marunouchi, Chiyoda-ku, Tokyo F term in Mitsubishi Electric Corporation (reference) 5H115 PC07 PG01 QN12 SF30 SL02 SL05 5K033 AA04 AA09 BA06 CA13 CB01 DA12

Claims (7)

[Claims] (1) N from the first car to the last car (N
Is a vehicle information transmission device mounted on each vehicle of a train to which (positive integers greater than 1) vehicles are connected and configured to transmit / receive vehicle information to / from other vehicles via a transmission path. A first other car information receiving means for receiving vehicle information of another car from a first transmission path for transmitting information in a first direction from a car to a last car, a vehicle of the own car in the first transmission path First own car information transmitting means for transmitting information, second second car for receiving vehicle information of another car from a second transmission path for transmitting vehicle information in a second direction from the last car to the first car A vehicle information transmission apparatus comprising: information receiving means; and second own car information transmitting means for transmitting vehicle information of the own car to the second transmission path. 2. A self-vehicle information creating means for creating vehicle information of the own-vehicle, wherein the first own-vehicle information transmitting means and the second own-vehicle information transmitting means comprise a vehicle created by the own-vehicle information creating means. The vehicle information transmission device according to claim 1, wherein the vehicle information transmission device transmits information. 3. A vehicle, comprising: a first reception detecting means connected to the first transmission line for detecting presence / absence of reception of vehicle information from another car, wherein the first reception detection means detects vehicle information from the other car. When the reception is detected, the first own car information transmitting means adds the vehicle information of the own car to the vehicle information of the other car received by the first other car information receiving means, and transmits the information. The vehicle information of the own car is transmitted at predetermined time intervals when the first reception detecting means does not detect the reception of the vehicle information from the other car.
Or the vehicle information transmission device according to claim 2. And a second reception detecting means connected to the second transmission path for detecting presence / absence of reception of vehicle information from another car, wherein the second reception detection means detects vehicle information from the other car. When the reception is detected, the second own car information transmitting means adds the own car information to the vehicle information of the other car received by the second other car information receiving means, and transmits the information. The vehicle information of the own car is transmitted every predetermined time when the second reception detecting means does not detect the reception of the vehicle information from the other car.
The vehicle information transmission device according to claim 3. 5. The first reception detection means and the second reception detection means perform no detection when no vehicle information is received from another car for a predetermined time. The vehicle information transmission device according to any one of claims 1 to 4. 6. The vehicle according to claim 1, wherein the first reception detecting means mounted on the first car does not detect reception of vehicle information from another car. Information transmission device. 7. The vehicle according to claim 1, wherein the second reception detecting means mounted on the last car does not detect reception of vehicle information from another car. Vehicle information transmission device.