JP2008052331A - Bus location system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bus location system for surely transmitting boarding and alighting information of a passenger and the alighting location information of the bus. <P>SOLUTION: An on-vehicle unit 21 installed in a bus 22 receives radio tag information 5a to be transmitted by a radio tag 11a, and when the radio tag information has been continuously received by the on-vehicle unit a predetermined number of times or more with a predetermined level of reception electric field intensity or more, the radio tag information is determined as the information of the radio tag 11a carried by a passenger onboard, and the on-vehicle unit 21 transmits the radio tag information 5a via a relay unit 31 for radio relay to a host computer 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a bus location system, and more particularly to a bus location system having a function of grasping a bus user's getting on and off of a bus and position information.

As disclosed in Japanese Patent Application Laid-Open No. 10-124798, the conventional bus location system is composed of a bus-side device 8 mounted on the bus 22 and a stop-side device 9 mounted on the bus stop.

Here, as shown in FIG. 4, the bus side device 8 includes an ID unit 81 that generates a bus ID and a stop ID that stops next, a communication control unit 82 that outputs data of the ID unit 81 to the transmitter 83, and communication. The transmitter 83 is configured to transmit the output from the control unit 82 to the bus stop. Further, the stop side device 9 includes a receiver 91 for receiving a radio signal transmitted from the transmitter 83 of the bus side device 8, a level detection unit 92 for detecting the received electric field strength, and an analysis and device for information of the received signal. It comprises a control unit 93 that controls the whole, and a display unit 94 that notifies the approach of the bus.

The bus-side device 8 sequentially transmits wireless signals. When the bus 22 approaches the stop 32a, the stop 32a enters the reception range of the wireless signal from the transmitter 83, so that the receiver 91 receives the wireless signal. . Then, the stop ID received by the receiver 91 and the own stop ID are collated. If this stop ID and the own stop ID match, it is displayed that the bus specified by the bus ID is approaching this stop 32a.

As the bus 22 approaches the stop 32a, the received electric field strength of the radio signal received by the receiver 91 increases, so that the received electric field strength detected by the level detector 92 is such that the bus 22 can be seen from the bus stop 32a. When the level corresponding to the approached distance is reached, the approach display is no longer necessary. When the bus 22 departs from the stop 32a and heads for the next stop 32b, the bus side device 8 sends the ID of the next stop 32b and the bus ID from the transmitter 83, and the above operation is repeated.
JP-A-10-124798

However, as described above, the conventional bus location system is a system only for the indication of the approach of the bus, and is a safe and reliable service for bus users for the purpose of measures against rapid aging or deterioration of public safety. It did not correspond.

The present invention solves such problems, and enables passenger information, passenger boarding / alighting information, boarding bus information, boarding bus position information, and monitoring of passengers by sending emergency reports from boarding buses, An object of the present invention is to provide a bus location system capable of reliably transmitting information.

In order to achieve the above object, the bus location system according to claim 1 is a vehicle-mounted device for wireless communication installed on a bus, a repeater for wireless relay installed at a bus stop or an arbitrary position, and the bus. In the bus location system configured by a host installed at the headquarters capable of grasping the operation status, at least information identifying the individual passenger transmitted from a wireless tag carried by a passenger on the bus And / or transmitting to the host via the repeater.

In order to achieve the above object, the bus location system according to claim 2 is the bus location system according to claim 1, wherein the in-vehicle device has a predetermined transmission message of its own station ID (tag ID) held by the wireless tag. When the reception electric field level is continuously received for a predetermined number of times or more, the periodic transmission message is transmitted to the host by adding a local station ID (bus ID) held by the in-vehicle device.

In order to achieve the above object, the bus location system according to claim 3 is the bus location system according to claim 1 or 2, characterized in that the in-vehicle device, the relay device, and the wireless tag use the same frequency. To do.

In order to achieve the above object, a bus location system according to claim 4 is characterized in that in the bus location system according to claim 1 or 2, specific low power is used for the in-vehicle device and the relay device.

In order to achieve the above object, the bus location system according to claim 5 is the bus location system according to claim 1 or 2, characterized in that the repeater is configured by an ad hoc network.

According to the first aspect of the present invention, since it is possible to place (ID) information of a passenger carrying a wireless tag on the bus location system, the position information of the passenger can be grasped, and the safety information of the bus user is protected by the guardian. Etc. can be provided.

According to the second aspect of the present invention, it is possible to grasp whether the passenger carrying the wireless tag is getting on the bus or getting off the bus, so that it is possible to grasp the passenger's dynamic state.

According to the third aspect of the invention, since the relay tag can directly receive the ID information of the wireless tag, it becomes possible to grasp the location of the passenger regardless of whether the bus gets on or off, and provides more detailed location information. it can.

According to the fourth aspect of the present invention, it is possible to save power in the system.

According to the fifth aspect of the present invention, the communication path can be automatically reconstructed even when a part of the repeater has a failure, so that information can be reliably transmitted to the host.

A preferred embodiment according to this embodiment will be described in detail with reference to FIGS.

The wireless tag 11 is carried by a passenger and includes an emergency button 111, a buzzer 112, a memory 113, a control unit 114, and a wireless unit 115. The in-vehicle device installed on the bus 22 includes an emergency button 211, a memory 212, a wireless tag reader (not shown), a control unit 214, and a wireless unit 215. The relay station 31 installed as a bus station 32 or a relay station between the bus stations includes a display unit 311, a control unit 313, a radio unit 314, and a gateway 315 (only a relay unit connected to the IP network is mounted).

In the wireless tag 11, the control unit 114 reads the ID stored in the memory 113 and outputs the ID to the wireless unit 115. The wireless unit 115 converts the data of the control unit 114 into a wireless signal, and sequentially transmits the wireless tag information 5. When the emergency button 111 is pressed in an abnormal situation, the control unit 114 sounds the buzzer 112 and outputs information obtained by adding an emergency signal to the wireless tag information 5.

When the in-vehicle device 21 receives the wireless tag information 5a, the wireless unit 215 of the in-vehicle device 21 outputs the received wireless tag information 5a and the received electric field strength to the control unit 214. The control unit 214 determines that only the wireless tag information received at a predetermined level or higher and continuously received for a predetermined number of times is information on the wireless tag mounted on the bus, and writes the information in the memory 212. In addition, the control unit 214 periodically outputs the in-vehicle device ID stored in the memory 212 and the onboard RFID tag information as the bus information 6 to the wireless unit 215. The wireless unit 215 converts the information of the control unit 214 into a wireless signal, and sends the bus information 6 to the repeater 31a. In addition, when the emergency button 211 of the in-vehicle device 21 is pressed, the in-vehicle device 21 transmits information with an emergency signal added to the bus information 6 to notify that an emergency has occurred in or around the bus.

When the repeater 31b receives the repeater information 7a from another repeater, the wireless unit 314 outputs the received repeater information 7a to the control unit 313. Based on the relay route stored in the memory 312, the control unit 313 outputs the relay unit information 7 b in which the own relay unit ID and the transmission destination relay unit ID are added to the relay unit information 7 a to the wireless unit 314. The radio unit 314 converts the repeater information 7b into a radio signal and sends it to the next repeater 31c. Further, when connected to the IP network like the relay 31 e, the control unit 313 outputs the relay information 7 e to the gateway 315. The gateway 315 sends the relay machine information 7e to the host computer 4.

When the repeater 31a receives the bus information 6 that is equal to or greater than the received electric field intensity corresponding to the distance from which the bus can be visually recognized from the bus stop, the control unit 313 returns the relevant route on which the in-vehicle device ID of the received bus information 6 approaches Judge whether the bus operates. In the case of a bus that operates, the approach display on the display unit 311 is turned off. In addition, the bus approach information is sent to the repeater installed at the previous bus stop. The relay station that has received the bus approach information displays the approach information on the display unit 311.

Further, based on the relay route stored in the memory 312, the relay station information 7 a in which the local station ID and the destination relay station ID are added to the bus information 6 is transmitted to the bus information 6. When the relay device 31 e receives the bus information 6, the control unit 313 outputs the relay device information 7 e in which the own relay device ID is added to the bus information 6 to the gateway 315. The gateway 315 sends the relay machine information 7e to the host computer 4.

When the repeater 31 receives the wireless tag information 5 having a predetermined received electric field strength or higher, the same operation as when the bus information 6 is received is performed.

When the relay device 31 receives emergency information, the emergency information is sent to the host computer 4 with the highest priority for all communications.

The host computer 4 analyzes the received RFID tag information 5, the bus information 6, the relay information 7 and the received electric field intensity added to each information, and transmits the passenger position, bus getting on / off, bus position, emergency information. Providing users with location and other information using a homepage or e-mail.

In this system, the wireless tag 11, the in-vehicle device 21, and the relay device 31 may perform communication using radio waves of the same frequency. Moreover, you may use specific low power for the vehicle equipment 21 and the relay machine 31. FIG. Further, between the repeaters, an ad hoc network that can maintain the communication path as much as possible even when a failure occurs in the wireless line may be configured.

Although the embodiment has been described in detail above, the present invention is not limited to such an embodiment. For example, the detailed configuration, communication means, and the like can be arbitrarily changed without departing from the gist of the present invention.

It is a system configuration figure for explaining an example of operation of a bus location system of the present invention. It is a figure which shows one Embodiment of an apparatus structure required for the bus location system of this invention. It is a figure for demonstrating the operation example of the conventional bus location system. It is a figure which shows one Embodiment of an apparatus structure required for the conventional bus location system.

Explanation of symbols

11a to 11b Radio tag 111 Radio tag emergency button 112 Radio tag buzzer 113 Radio tag memory 114 Radio tag control unit 115 Radio tag radio unit 12a to 12b Passenger 21 In-vehicle device 211 In-vehicle device emergency button 212 In-vehicle device emergency button Memory 214 Control unit of in-vehicle device 215 Radio unit of in-vehicle device 22 Bus 31a to 31e Relay unit 311 Display unit of relay device 312 Memory of relay device 313 Control unit of relay device 314 Radio unit of relay device 315 Gateway of relay device 4 Host Computer 5a-5b RFID tag information 6 Bus information (including RFID tag information)
7a-7e Repeater information (including bus information and wireless tag information)

Claims (5)

  By an in-vehicle device for wireless communication installed on a bus, a relay device for wireless relay installed at a bus stop or arbitrary position, and a host installed at the headquarters capable of grasping the operation status of the bus In the configured bus location system, transmitting at least information identifying an individual passenger transmitted from a wireless tag carried by a passenger of the bus to the host via the in-vehicle device and / or the relay device. Bus location system characterized by When the in-vehicle device continuously receives a periodic transmission message of its own station ID (tag ID) held by the wireless tag at a predetermined reception electric field level or more for a predetermined number of times, the on-vehicle device holds the periodic transmission message. 2. The bus location system according to claim 1, wherein the local station ID (bus ID) to be transmitted is transmitted to the host. The bus location system according to claim 1 or 2, wherein the in-vehicle device, the relay device, and the wireless tag use the same frequency. 3. The bus location system according to claim 1, wherein specific low power is used for the in-vehicle device and the relay device. 3. The bus location system according to claim 1, wherein the relay station is configured by an ad hoc network.

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