JPH08329388A - Bus location system - Google Patents

Abstract

PURPOSE: To turn off an approach display at a bus stop right before a bus reaches it. CONSTITUTION: The bus 10 temporarily stores a bus stop ID in a controller 12 when a bus stop guide unit 11 makes a guidance about a next bus stop 30 and sends it through a data transmitter receiver 13 in response to polling from a base station 20. The base station 20 sends a turn-on command for approach display to several following bus stops 30 corresponding to the bus stop ID and turns on corresponding lamps on display units 34 thorugh a data transmitter receiver 31 and a controller 33. The very small transmitter receiver 32 of the bus stop 30 sends its bus stop ID by radio with extremely small electric power. The bus 20 when entering a fine radio area receives the bus stop ID by the very small transmitter receiver 14 and compares it with the stored bus stop ID, and when they match each other, a turn-off command for approach display is sent to the bus stop 30 through the very small transmitter receiver 14 to turn off the corresponding lamp of the display unit 34 thorugh the very small transmitter receiver 32 and controller 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bus location system, and more particularly, to a bus which causes a base station which has received information indicating the next bus stop approaching from the bus by radio to cause the bus stop to indicate the approach of the bus. Regarding location system.

[0002]

2. Description of the Related Art In the conventional bus location system of this type, when a bus stop with a bus is operated and a bus stop guide is operated to broadcast a guide for the next bus stop on the bus,
The identification number of the corresponding next bus stop was transmitted to the base station by radio in response to the polling signal of the own bus from the base station. Upon receiving the response signal from the bus, the base station analyzes the identification number and sends an approach indication lighting command to the bus stop of the identification number or to a bus stop several points ahead of it, and at the same time, the base station The bus stop recognizes that the bus has passed, and transmits a command to turn off the approach display to the bus stop, thereby controlling the approach (lighting and turning off) of the bus.

[0003]

In the above-mentioned conventional bus location system, the bus is passed through the bus stop and the bus stop guide is operated to broadcast the guidance of the next bus stop before passing through the base station. Also, since the approach display at each bus stop can be turned off, the approach display at each bus stop has a problem that the display goes off after a while after the bus has passed the bus stop. That is, a passenger who arrives at the bus stop after the bus has passed may sometimes mistakenly think that the bus will come soon after seeing that the approach indicator is still lit.

[0004]

SUMMARY OF THE INVENTION The present invention provides a bus location system in which a base station wirelessly receives information indicating the next bus stop approaching from a bus and causes the bus stop to indicate the approach of the bus. , On the bus,
A first station for transmitting and receiving data wirelessly to and from the base station and a bus stop guide which outputs the identification number of the bus stop while providing voice guidance of the next bus stop.
Output from the bus-side wireless transceiver and the second bus-side wireless transceiver that transmits and receives data to and from the bus-stop only in the immediate area of the bus-stop by the low-power radio The stored identification number of the next bus stop is temporarily stored, and when the polling signal from the base station is received through the first wireless transceiver on the bus side, the stored identification number of the bus stop is returned, When the identification number of the bus stop is received from the bus stop through the bus-side wireless transceiver 2 of FIG. 2, it is collated with the stored identification number of the bus stop, and a bus-side control device that responds with an approach indication extinguishing command when they match is provided. , To the base station,
A wireless transceiver on the side of a base station that transmits and receives data to and from the bus and the bus station wirelessly, and an identification of the next bus station from the bus to which the polling signal is sent through the wireless transceiver on the base station side. When receiving the number, a base station-side control device that transmits a lighting instruction of an approach indication to at least one bus stop designated in advance corresponding to the identification number is provided, and the bus stop is wirelessly connected to the base station. The first wireless bus transceiver on the bus stop side that sends and receives data to and from the bus, and sends and receives data including the identification number of the own bus stop to and from the bus only within the immediate area of the own bus stop by the low power radio. Second to do
The bus station side wireless transceiver, an indicator that displays an approach indicating that the bus is approaching, and the display when the lighting instruction is received from the base station through the first bus station side wireless transceiver And a bus-stop-side control device that turns off the approach indication of the indicator when the turn-off indication of the indicator is turned on and the turn-off instruction is received from the bus through the second bus-stop-side wireless transceiver.

[0005]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. Under the control of the base station 20, a plurality (only one is shown) of buses 10 are operating on a route where a plurality of (only one is shown) bus stops 30 are provided. The bus 10 performs a guidance broadcast by voice of the next bus stop on the bus by a driver's operation, and outputs a bus stop identification number (hereinafter referred to as a bus stop ID) 11 of the bus stop, and a base station wirelessly. A data transmitter / receiver 13 that transmits and receives data to and from the station 20 and each bus stop 3 by a low-power radio.
A special small transceiver 14 that transmits and receives data to and from the bus stop only in the area nearest 0, and a memory (not shown) for the identification number (bus stop ID) of the next bus stop output from the bus stop guide 11. When the polling signal from the base station 20 is received through the data transmitter / receiver 13, the stored bus stop ID is responded, and the bus stop ID of the bus stop 30 is received from the bus stop 30 through the special small transmitter / receiver. The control device 12 is provided which collates with the stored bus stop ID and responds with an approach display extinguishing command when they match. The base station 20 transmits / receives data to / from the bus 10 and the bus stop 30 wirelessly, and the bus stop ID of the next bus stop from the bus 10 to which the polling signal is sent via the data transmitter / receiver 21.
Is received, the control device 22 that transmits a lighting instruction for approach display to at least one bus stop 30 designated in advance corresponding to the bus stop ID is provided. The bus stop 30 transmits / receives data to / from the data transmitter / receiver 31 that wirelessly transmits / receives data to / from the base station 20, and to / from the bus 10 only in the immediate vicinity of the bus stop 30 itself by wireless with low power. Bus 1 having a small transceiver 32 and a lamp and a lamp driving circuit (neither shown)
Indicator 34 for displaying an approach indicating that 0 is approaching
When the lighting instruction is received from the base station 20 through the data transceiver 31, the approach indicator lamp of the display 34 is turned on, and when the turn-off instruction is received from the bus 10 through the extra small transceiver 32, the approach indicator lamp of the indicator 34 is turned on. And a control device 33 for turning off the light.

As the special small transceiver 14 of the bus 10 and the special small transceiver 32 of the bus stop 30, wireless equipment of so-called specific small power (output of 10 mW or less) can be used. The reach of radio waves between the bus 10 and the bus stop 30 is 50
The goal is to be able to turn off the approach indicator within m, and the adjustment is performed by changing the direction of the antenna of the small transceiver 32 on the bus stop 30 side or changing the reception sensitivity. In addition, the data transmission is performed in a start-stop synchronization and a data rate of 120.
It is performed with 0 bps, a data length of 8 bits, and a start bit and a stop bit of 1 bit each.

Next, the operation will be described. When the bus 10 departs (including passage) from the stop 30 where the bus 10 is located, the driver operates the bus stop guide 11 to guide the next bus stop 30 to the bus 1
Broadcast within 0. At this time, the bus stop guide 11 outputs the bus stop ID of the corresponding bus stop 30 to the control device 12, and the control device 12 temporarily stores the bus stop ID. The stored content of the bus stop ID is overwritten each time it is output from the bus stop guide 11. When the data transceiver 13 detects a polling signal from the base station 20 for its own bus, the control device 12 transmits the stored bus stop ID to the base station 20 as a response signal. At the base station 20,
The data transmitter / receiver 21 receives the response signal from the bus 10, the control device 22 reads the bus stop ID, and refers to the correspondence database of the reception bus stop ID stored in advance and the bus stop ID of the lighting command destination bus stop. Thus, the approach display lighting command is transmitted through the data transmitter / receiver 21 to the bus stop 30 corresponding to the bus stop ID or to the bus stop 30 several points away from the bus stop 30. The bus stop 30 to which the lighting command is transmitted depends on how many minutes (minutes) before the estimated arrival time of the bus 10 at each bus stop 30, the approach indicator is turned on, that is, the bus stop. It is determined according to the distance between the stops 30 and the traveling speed of the bus 10. For example, the bus stop IDs of the first to nth bus stops 30 are “1”, “2”, ...
When set to “n”, the reception bus stop IDs are “2” and “3”
The bus stop IDs of the lighting command transmission destination bus stops respectively corresponding to “2”, “3”, “4”, “5” and “4”,
If the data is stored in the database as "5" and "6", the bus stop ID "2" is output when the bus 10 operates the bus stop guide 11 after leaving the first bus stop 30, and the second stop which is the next stop. Bus stop 30 and 3 ahead
The approach indicator lamps of the fourth and fifth bus stops 30 are turned on. Further, when the bus 10 departs from the second bus stop 30 and operates the bus stop guide 11, the bus stop ID “3” is output, and the next next stop is the fourth bus stop 30.
And the approach indicator lamps of the fifth and sixth bus stops 30 ahead of that are turned on. It should be noted that the lighting instruction for the approach display of the same bus 10 to each bus stop 30 may be sent at least once (for example, the second and third bus stops), and may be sent in duplicate (for example, the fourth and fifth bus stops). Bus stop).

In the bus station 30, when the data transceiver 31 receives a lighting instruction from the base station 20 as a signal indicating the approach of the bus, the control device 33 turns on the corresponding lamp of the display 34. On the other hand, the special small transceiver 32 of the bus stop 30
Transmits the bus stop ID of its own bus stop by wireless with very small power that can reach only the nearest area (for example, within 50 m). When the above-mentioned bus 10 approaches this bus stop 30 and enters the wireless area of low power, the special small transceiver 1
At 4, the bus stop ID from the bus stop 30 is received and sent to the control device 12. The controller 12 compares this bus stop ID with the bus stop ID of the next bus stop stored in advance. If the bus stop IDs do not match, the control device 12 recognizes that the approaching bus stop is different from the target bus stop and does nothing, but if the bus stop IDs match, the approaching bus stop is the target bus stop. Recognizing that, the special small transceiver 14 sends an instruction to turn off the approach display to the bus stop 30.
To send through. Bus stop 30 is a small transceiver 3
When the turn-off command is received from the bus 10 as a signal indicating the approach of the bus at 2, the control device 33 turns off the corresponding lamp of the display 34.

[0009]

As described above, in the bus location system of the present invention, the first radio station transceiver on the bus stop side receiving the lighting instruction of the approach indication from the base station on the bus stop side and the immediate area of the own bus stop. The second bus stop side wireless transceiver that sends the identification number of its own bus stop to the bus and receives the approach indication extinguishing command from the bus only to the base station on the bus side to the next bus stop identification number The second bus side wireless transceiver that receives the bus stop identification number from the first bus side wireless transmitter / receiver and the bus stop identification number only from within the immediate vicinity of the bus stop and sends the approach indication extinguishing command to the bus stop When the bus operates the bus stop indicator and recognizes the next bus stop, it sends the identification number of the bus stop to the base station and the bus stop or the bus stop via the base station. Approaching at each bus stop by turning on the approaching indicator on the indicator at the bus stop several places away and turning off the approaching indicator when the bus approaches the nearest bus stop and the received identification number matches The display can be turned on when the target bus approaches a bus stop several points in front, and can be turned off just before arriving at the own bus stop. It is possible to prevent misidentification of.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

[Explanation of symbols]

 10 Bus 11 Bus Stop Guide 12, 22, 33 Control Device 13, 21, 31 Data Transceiver 14, 32 Extra Small Transceiver 20 Base Station 30 Bus Stop 34 Display

Claims (1)

[Claims] 1. A bus location system, wherein a base station, which has received information indicating a next bus stop approaching from a bus wirelessly, causes the bus stop to display an approaching indication of the bus, wherein: A bus stop guide that provides voice guidance of the bus stop and outputs the identification number of the bus stop, a first wireless transceiver on the bus side that wirelessly transmits and receives data to and from the base station, and a small amount of power A second bus-side wireless transceiver that wirelessly transmits and receives data to and from the bus stop only within the immediate area of the bus stop, and an identification number of the next bus stop output from the bus stop guide. When the polling signal from the base station is received through the first radio transceiver on the first bus side, the identification number of the bus stop stored is applied. Then, when the identification number of the bus stop is received from the bus stop through the second wireless transceiver on the bus side, it is collated with the stored identification number of the bus stop, and when it matches, a bus side control that responds with an instruction to turn off the approach display And a base station side wireless transceiver that wirelessly transmits and receives data to and from the bus and the bus stop, and a destination of the polling signal through the base station side wireless transceiver. A base station-side control device that, when receiving an identification number of the next bus stop from the bus, transmits a lighting instruction of an approach display to at least one bus stop designated in advance corresponding to the identification number; A first bus station-side wireless transceiver that wirelessly transmits and receives data to and from the base station at the station;
The bus is approaching the second bus stop side wireless transceiver that transmits and receives data including the identification number of the own bus stop to and from the bus only in the immediate area of the own bus stop by wireless of low power. When the lighting command is received from the base station through the indicator for indicating that there is an approach indication and the wireless transceiver on the side of the first bus stop, the approach indication of the indicator is turned on and the second bus stop side A bus location system, comprising: a bus stop side controller that turns off the approach display of the display when the turn-off command is received from the bus through a wireless transceiver.