JPS588030B2 - Idoutai no Unkojiyoukiyouhiyoujihoushiki - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a system for automatically displaying the operating status of a bus at a bus stop or the like.

The operation status of route buses and the like is affected by road conditions and other factors, and they often cannot always operate according to the scheduled timetable.

Therefore, passengers waiting for a bus at a bus stop have the inconvenience of not knowing when the bus will arrive if it is out of visible distance, and even when the bus approaches, it is difficult to determine the destination of the bus or the route it will take. Therefore, it is desirable to display this information at the bus stop.

The present invention has been made in view of the above points, and is provided with a means for emitting an identification signal in the form of radio waves indicating the type of the bus, such as its destination, whether it is on a transit route, etc. The purpose of this system is to receive the radio waves at the location, detect the identification signal, and display this at the bus stop to notify passengers of information regarding the operating status of the bus.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of a device provided on a bus applied to the present invention, in which 1 is an identification signal generation circuit, 2 is a modulation and transmission circuit, 3 is a drive control circuit, and 4 is a transmission circuit. It's an antenna.

Further, as shown in FIG. 2, first signal identification circuits 11 and 21 are installed at positions along the route of the bus, for example, at stops m and n.
, receiving antennas 12, 22, receiving and demodulating circuits 13, 2
3. A device M, N is provided consisting of a second signal identification circuit 14, 24, a display drive logic circuit 15, 25 and a display 16.26.

In addition, as shown in the figure, this display 16.26 shows the bus stop m, n1 of the own station, the route names A, B, C of the buses stopping at the stops m, n, and the names of the route A, B, C. A display such as "Exited XX stop (two stops ahead)" is displayed at the corresponding lower position, and these displays are written in advance on a nameplate or the like.

In addition, a lighting section 17.27 consisting of lamps 17a to 17c and 27a to 27c is provided below the display "Leaving XX stop (two stops ahead)".

Although FIG. 2 shows two nearby stops m and n, similar devices are provided at each of the other stops.

Next, the operation of this embodiment will be explained.

First, the bus driver etc. should turn the drive switch (not shown) to "O".
When the user operates ``N'', the drive control circuit 3 becomes operational 9, and the identification signal generation circuit 1 and modulation and transmission circuit 2 also become operational.

Then, the identification signal generation circuit 1 generates a predetermined identification signal that is determined in accordance with the type of bus, such as the preset route of the bus.

This identification signal may be a combination of tones (for example, 1000 Hz and 11100 Hz for some types of buses) to prevent equipment malfunctions due to interference or urban noise.
and two-frequency tones).

The identification signal generated from the identification signal generation circuit 1 is introduced into the modulation and transmission circuit 2.

Here, a predetermined carrier wave (for example, 15
A carrier wave with a certain frequency of about 0 to 400 MHz) is modulated (
After being subjected to FM modulation (for example, FM modulation), the antenna 4 continuously emits weak radio waves while the bus is running until the aforementioned drive switch is turned OFF.

Therefore, when the bus is farther away than the stops m and n, the reception and demodulation circuits 13 and 23 provided at the stops m and n do not respond.

However, when the bus approaches the stop one stop before the bus on the traveling route, for example, considering stop n, the bus approaches stop m (here, stop m is the stop one stop before stop n).

), when the bus approaches, the antenna 12 captures the radio waves radiated from the bus, introduces them to the reception and demodulation circuit 13, and demodulates them.

The demodulated signal (identification signal) is transmitted to bus stop n by wired transmission means such as cable 5 and introduced into signal identification circuit 21 of device N.

When the identification signal is detected by this signal identification circuit 21, the output signal of this signal identification circuit 21 is sent to the display drive logic circuit 25.
is applied to

This display drive logic circuit 25 includes, for example, lamps 27a to 27a.
27c, and when the output of the first signal identification circuit 21 is applied to the set terminal of the flip-flop, it enters the set state, and while this state is maintained, the display 26 lighting section 27
The predetermined lamps 27a to 27c are turned on.

In addition, the first signal identification circuit 21 selects the flip-flop corresponding to the route of the bus by detecting the identification signal and sets it in a set state.

For example, when a bus on transit route A approaches stop m, an identification signal indicating this is transmitted from the reception and demodulation circuit 13 to device N at stop n via cable 5, and based on this identification signal, the first signal is The identification circuit 21 detects that a bus on the transit route A approaches the stop m, and turns on the lamp 2 of the lighting section 27.
The flip-flop corresponding to the route A of the display drive logic circuit 25 is selected so as to light up the lamp 27a, and this flip-flop is held in the set state, and the lamp 27a is turned on.

If this display device 26 is attached to the guide sign board installed at stop n, it will alert passengers waiting for the bus at stop n.
It is possible to provide information that the bus is approaching the next stop m, as well as information such as the bus's destination and transit route.

Then, when the bus approaches stop n, the receiving antenna 22
Radio waves are captured by the receiver and demodulator 23, and received and demodulated by the receiver and demodulator circuit 23.

This demodulated signal (identification signal) is introduced into the second signal identification circuit 24 and is transmitted via the cable 5 to drive a display installed at the next stop 0 (not shown). .

When an identification signal is detected by this signal identification circuit 24, the output signal of this signal identification circuit 24 is sent to the display drive logic circuit 25.
is applied to

For example, according to the previous example, the identification signal received and demodulated when the bus on transit route A approaches is sent to the signal identification circuit 24.
When detected, the signal identification circuit 24 selects the flip-flop corresponding to route A of the display driving logic circuit 25, and applies an output signal to the reset terminal of this flip-flop to place the flip-flop in a reset state.

Therefore, the lamp 27a of the lighting section 27 of the display 26 is turned off.

In addition, multiple types of buses (for example, buses on multiple routes)
At a stop where a train stops, the number of flip-flops in the display drive logic circuit and the number of lamps in the lighting section are required to be equal to the number of types, and the signal identification circuit distinguishes these types and selects the flip-flops corresponding to the type. However, it goes without saying that it would be better to control the blinking of the lamp.

Furthermore, although the demodulated signal is transmitted as is when transmitting the signal to the next stop, the demodulated signal may be identified and regenerated before being transmitted.

Furthermore, the display was configured to start operating when the bus approaches the previous stop, but if the distance between the stops is particularly long, the display may be activated at an appropriate position between the stops, such as when the bus approaches the previous stop. It is also possible to install a receiving antenna, a receiving and demodulating circuit, etc. that should be installed at the previous stop at a position that is more than a visible distance away, and to start operating the display when the bus approaches this position.

Various other modifications are possible without departing from the gist of the invention.

As described above, according to the present invention, the operating status of the bus is automatically displayed at the bus stop, which is extremely useful in practice.

[Brief explanation of drawings]

FIG. 1 is a circuit configuration diagram of an embodiment of a device installed on a bus to which the present invention is applied, and FIG. 2 is a circuit configuration diagram of an embodiment of a device installed at a bus stop to which the present invention is applied. It is. DESCRIPTION OF SYMBOLS 1...Identification signal generation circuit, 2...Modulation and transmission circuit, 4...Transmission antenna, 11, 2
1...First signal identification circuit, 12, 22...
...Receiving antenna, 13,23...Reception and demodulation circuit, 14,24...Second signal identification circuit, 15,25...Display drive logic circuit ,16,
26...Indicator.

Claims (1)

[Claims] 1. A bus is equipped with a transmitting means that emits radio waves modulated by an identification signal representing the type of the bus, and a bus is provided at a stop along the route of the bus and receives the radio waves emitted by the transmitting means. a display device that displays the type of the bus; and a display drive device that controls the display operation of the display device, and the display drive device is arranged at a stop on the route of the bus before the bus stop. Based on the identification signal obtained by the receiving means of the stop located at the station, the bus type is displayed on the display of the own station, and the identification signal obtained by the receiving means of the stop of the own station is displayed. A bus operation status display method, characterized in that the display of the bus type on the own station's display is terminated based on the identification signal.