JPS588031B2 - Inductive communication vehicle equipment - Google Patents

Description

Detailed Description of the Invention The present invention is equipped with an on-vehicle device that transmits a system number to a bus, and communicates with ground equipment at a certain point by electromagnetic induction, so that a corresponding bus approaches the bus at a bus stop. This invention relates to a guidance communication device for a bus approach display system that provides guidance and display of bus approach information.

Conventionally, the system number transmitted from the bus has been set by operating a digital switch provided in the setting section of the inductive communication vehicle-mounted device.

Such manual settings are prone to errors, and in the case of incorrect settings, a bus with a system number different from the one indicated on the guide will arrive.

The purpose of the present invention is to prevent incorrect setting of system numbers, which is one of the factors that affect system reliability.
The present invention provides an in-vehicle guidance communication device in which a system number is automatically set through communication between the ground and the vehicle.

Hereinafter, the present invention will be described in detail based on examples.

Figure 1 is the concept of the system, Figure 2 is the system configuration, and Figure 3 is the system configuration.
The figure shows communication means between the ground and the vehicle.

1 and 2 are buses equipped with on-vehicle equipment, and 3 is a roadside device for transmitting a predetermined system number to the on-vehicle equipment, which is installed at the bus exit of a business office or at the start/end point.

4 is a roadside device for receiving the system number transmitted from the on-vehicle device, and is installed at a predetermined position on the bus route in front of the bus stop.

Reference numeral 5 denotes a central processing unit that sends and receives signals to and from each roadside device and issues an approach signal to a display 6 installed at a bus stop, and is placed at a business office or the like.

The operation of this system is as follows.

In FIG. 1, first, when a bus 1 leaves an office, roadside equipment 3 installed at its exit transmits a predetermined system number in response to a command from a central processing unit 5.

The on-vehicle equipment on the bus 1 sets the system number by receiving the signal.

On the other hand, the roadside equipment 4 installed on the route receives the system number when the bus 2 passes that point, and sends it to the central processing unit 5.

Based on the received signal, the central processing unit 5 sends a display signal to the display 6 at the bus stop to display an approaching bus to notify passengers that a bus with a certain system number is approaching.

Further, a more detailed explanation will be added based on FIGS. 2 and 3.

In the figure, on-vehicle equipment mounted on a bus 1 or 2 includes a data storage section 10, an on-board communication section 11, and an on-board antenna 12.

When the on-board communication section 11 receives a trigger signal from the ground, it transmits the bus data stored in the data storage section 10, that is, the vehicle number and system number, to the ground.

The subsequent operation of the onboard equipment differs depending on the type of trigger signal transmitted from the ground.

In addition, Figure 3 A. The timing charts for road equipment 3 and 4 are shown respectively.

Now, if trigger signal a is received from the on-road device 3 at the bus exit of the business office, the receiving function of the onboard device will be disabled for a certain period of time after receiving change data from the ground, that is, a new system number. locked.

In this case, the system number is rewritten to a new one in the memory section 10.

On the other hand, when the trigger signal b is received from the on-road device 4 on the route, the receiving function of the on-vehicle device is locked for a certain period of time after the bus status is transmitted from the vehicle.

The road devices 3 and 4 each include transmission sections 30 and 40, road communication sections 31 and 41, and road antennas 32 and 42, respectively.

When the road equipment 3 at the exit of the business office receives bus data from the vehicle, the received data is sent from the transmission section 30 to the central processing unit 5 via the telephone line.

The central processing unit 5 is composed of an arithmetic processing section 50 and a line correspondence section 51, and the received data from each road device is collected via the line correspondence section 51.

The data received from the road equipment 3, that is, the vehicle number and system number, is checked against the bus schedule stored in advance in the arithmetic processing section 50, and the appropriate system number is sent out via the line correspondence section 51.

When the road device 3 receives the new system number at the transmission section, it transmits it from the road communication section 31 to the vehicle via the road antenna 32.

On the other hand, the road equipment 4 on the route sends the bus data received from onboard the vehicle to the central processing unit 5 from the transmission section 40 .

The arithmetic processing section 50 of the central processing unit transmits a display signal to the bus stop display 6 based on this received data.

The display device 6 is composed of a control section 60 and a display section 61.
The control unit 6 receives a display signal sent via the telephone line.
0 is driven, the chime on the display section 61 will sound and the lamp will light up according to a predetermined procedure.

As is clear from the above description, the present invention allows in-vehicle equipment installed on a bus to receive a system number from a roadside device installed at a business office or at a place where the system number is to be changed, such as at the start and end points of a bus on a route. By adding a function to store system numbers, it is possible to solve the problem of system number setting errors caused by human operations.

Furthermore, by driving the destination subtitle device of the bus using the system number received by the on-vehicle device, it is possible to automatically output subtitles for a predetermined destination.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a communication system using an inductive communication vehicle-mounted device according to one embodiment of the present invention, FIG. 2 is a block diagram of the device, and FIG. 3 is a timing chart of the same operation. 10...Storage section, 11...Onboard communication section.

Claims (1)

[Scope of Claims] 1. A vehicle is provided with a means for identifying a trigger signal from the ground and transmitting a stored system number to the ground by electromagnetic induction, and a means for storing a system number transmitted from the ground by electromagnetic induction. An inductive communication vehicle-mounted device characterized by: 2. The in-vehicle guidance communication device according to claim 1, wherein the storage system number of the storage means corresponds to the display of the bus destination subtitle device.