JP3409490B2 - Moving body approach notification system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving body approach notification system for notifying the traveling position of a moving body such as a route bus by image or voice.

[0002]

2. Description of the Related Art The following is known as a conventional moving body approach notification system. That is, for example, a wireless device is installed in a bus and a bus stop, and when the arrival of the bus at the bus stop is detected, the business office is notified via a telephone line. The sales office informs the next bus stop via the telephone line that the bus has left the bus stop just before.
This allows passengers waiting at the bus stop to know the approach of the bus.

FIG. 5 is a block diagram showing an example of such a conventional system. In this figure, 101a to 101c are route buses, 102a to 102c are bus stops, and 103a to 103c.
Is a telephone line, and 104 is a sales office. A wireless device is installed in each bus and bus stop. When the bus 101a arrives at the bus stop 102a, for example, the arrival is detected wirelessly and the sales office 104 is contacted via the telephone line 103a. Then,
The business office 104 informs the bus stop where the bus 101a stops next, for example, the bus stop 102b via the telephone line 103b that the bus has left the bus stop 102a.

[0004]

However, the conventional moving body approach notification system as described above has the following problems. First, since the current traveling position of each bus is notified to the next bus stop by a telephone line when the bus stops at the next bus stop, the next bus stop only knows that the bus stop just before was left. Therefore, passengers at the bus stop can predict the arrival time if the bus stops are close and the bus is within the line of sight, but even if the bus stop is far away from the line of sight or the scheduled arrival time has passed due to traffic congestion, etc. If you don't see, you can't predict the bus arrival time because you don't know the current location of the bus. For this reason, accurate information services cannot be provided to bus users, and there is a risk that passengers may use other transportation means.

Further, since only the wireless communication between the bus stop and the bus is not relayed on the way, when the distance between the bus stops is long or the place where the radio wave environment is bad, the radio wave does not reach reliably and the traveling position of the bus is There are things I don't understand. In addition, a telephone line is required between each bus stop and the sales office, so line construction is required when installing the bus stop. For this reason, the system scale becomes large on routes with a wide range of operations and routes with many buses and bus stops, and it takes time and cost to introduce the system. In addition, it may not be possible to install the system at existing bus stops where it is difficult to add telephone line construction, or due to geographical conditions.

An object of the present invention is to provide a moving body approach notification system which has a relatively simple system construction and is economical, and which can show the traveling position of a moving body such as a bus in real time.

[0007]

As shown in FIG. 1, a mobile unit approach notification system according to the first aspect of the present invention moves a plurality of mobile units X having mobile stations and a plurality of fixed stations Y, which move according to a predetermined operation plan. A system composed of and each mobile unit X
Is a storage unit A that stores identification data for identifying itself, a communication unit C that communicates with another station, a distance determination unit D that determines the distance to the partner station based on the received data, and a communication unit C. When a call from the fixed station Y is received, it is determined whether or not the call is a call to itself by the identification data stored in the storage means A, and if it is a call to itself, the distance determination means D The fixed station Y and the mobile communication control means B for instructing the communication means C to return the distance information to the fixed station Y to the fixed station Y, and each fixed station Y stores a predetermined operation plan at the bus stop side. Storage means E and communication means F for mobile communication with the mobile X
And a notification means G for notifying distance information, and a corresponding mobile body X is called at a predetermined time based on the operation plan stored by the bus stop side storage means E, and the distance information between the corresponding mobile body X and the fixed station Y is obtained. The fixed station side communication control means H which receives from the corresponding mobile body X and instructs the notification means G to notify the distance between the corresponding mobile body X and the fixed station Y based on the distance information.
With.

The moving body approach notification system according to the second aspect of the invention is
As shown in FIG. 1, the system is composed of a plurality of mobile units (X1 to Xn) equipped with mobile stations and a plurality of fixed stations Y that move according to a predetermined operation plan, and each mobile unit (X1
To Xn), a storage unit A that stores identification data for identifying itself, a communication unit C that communicates with another station, a distance determination unit D that determines the distance to the partner station based on the received data, and a communication unit When the means C receives a call from the fixed station Y, it is determined whether the call is a call to itself by the identification data stored in the storage means A, and it is determined that the call is not made to the own mobile station X1. In the case of the communication command, the communication unit itself becomes a relay mobile unit and communicates with the corresponding mobile unit X1 called by the data received from the fixed station Y,
Mobile communication control means B for instructing the communication means C to send back the distance information between the fixed station and itself and the distance information between the mobile X1 and itself by the distance determination means, The fixed station Y includes a bus stop storage unit E that stores a predetermined operation plan, a mobile communication unit F that communicates with mobile units (X1 to Xn), a notification unit G that notifies distance information, and a bus stop storage. When the corresponding mobile unit X1 is called at a predetermined time based on the operation plan stored by the means E and communication with the corresponding mobile unit X1 is not possible, the other mobile units (X2 to Xn) other than the corresponding mobile unit X are relay mobile units. (X2-Xn)
As a relay mobile body (X2
~ Xn) and the fixed station Y, and the distance information between the relay mobiles (X2 to Xn) and the corresponding mobile X1 are received, and the corresponding mobile X1 and the fixed station Y are received based on the distance information.
The fixed station side communication control means H for instructing the informing means G to inform the distance to and.

The mobile unit approach notification system according to the third aspect of the invention is
As shown in FIG. 1, the system is composed of a plurality of mobile units (X1 to Xn) equipped with mobile stations and a plurality of fixed stations Y that move according to a predetermined operation plan, and each mobile unit (X1
To Xn), a storage unit A that stores identification data for identifying itself, a communication unit C that communicates with another station, a distance determination unit D that determines the distance to the partner station based on the received data, and a communication unit When the means C receives a call from the fixed station Y, it is judged whether the call is a call to itself by the identification data stored in the storage means A. If you cannot communicate with the corresponding mobile unit X1 called by the communication command,
The relay mobile body X2 itself calls another relay mobile body (X3 to Xn), relays at least one other relay mobile body (X3 to Xn), communicates with the corresponding mobile body X1, and determines the distance. The distance information between the fixed station Y and the self X2 by the means, the distance information between the other relay mobiles (X3 to Xn) and the self X2, the distance information between the relay mobiles (X3 to Xn) other than itself, and the corresponding information. Relay mobile unit (X that communicates with mobile unit X1
3 to Xn) and mobile communication control means B for instructing the communication means C to return the distance information between the corresponding mobile body X1 to the fixed station Y, and each fixed station Y has a predetermined operation plan. Bus stop side storage means E for storing and mobile bodies (X1 to Xn)
The mobile unit X1 for communicating with the mobile unit X, the reporting unit G for reporting the distance information, and the mobile unit X1 at a predetermined time based on the operation plan stored by the bus stop storage unit E,
When the mobile unit X1 cannot communicate with the mobile unit X1, the mobile units (X2 to Xn) other than the mobile unit X1 are relay mobile units (X2).
2 to Xn) are called in a predetermined order and the distance information between the relay mobile unit X2 and the fixed station Y, which have been able to communicate, each relay mobile unit (X3).
To Xn) and distance information between the relay mobile unit (X3 to Xn) communicating with the corresponding mobile unit X and the corresponding mobile unit X1, and based on the distance information, the corresponding mobile unit X1 and the fixed station Y are received. The fixed station side communication control means H for instructing the informing means G to inform the distance to and.

The moving body approach notification system according to the fourth aspect of the present invention is
In the system according to any one of the inventions 1 to 3, the notification means G is a display device. A mobile unit approach notification system according to a fifth aspect of the present invention is the system according to any one of the first to third aspects, wherein the notification unit G is a voice device. A mobile unit approach notification system according to a sixth aspect of the present invention is the system of the fourth aspect, wherein the display device is a liquid crystal display.

According to a seventh aspect of the present invention, there is provided a moving body approach notification system,
In any one of the first to sixth aspects of the invention, the mobile communication means and the fixed-station-to-mobile communication means are specified low power radios.

[0012]

According to the first aspect of the invention, the fixed station side communication control means instructs the paired mobile communication means to call the corresponding mobile body at a predetermined time based on the operation plan stored in the bus stop side storage means. On the mobile side, when the communication means receives a call from the fixed station, the mobile communication control means
Whether the call is a call to itself is determined by the identification data stored in the storage means, and if it is a call to itself, the distance determination means returns the distance information between the fixed station and itself to the fixed station. The communication means is instructed to do so. The fixed station side, which has received the distance information returned from the mobile body side, instructs the notification means to notify the distance between the mobile body and the fixed station based on the distance information. As a result, the traveling position of the moving body is notified in real time.

According to the second aspect of the invention, as in the first aspect of the invention, the fixed station calls the corresponding mobile unit, but when the mobile unit cannot directly communicate with the corresponding mobile unit, another mobile unit is called and the mobile unit with which the mobile unit can communicate with the corresponding mobile unit. The distance information to the body is received, and the distance between the fixed station and the corresponding mobile body is notified based on the distance information and the distance information between the mobile body and the fixed station that can communicate. Thereby, the traveling position of the moving body is notified in real time, as in the first aspect.

According to the third aspect of the invention, as in the second aspect of the invention, when the fixed station calls the corresponding mobile unit, but cannot communicate with the first mobile unit that has called first, the fixed station calls the second mobile unit via the next mobile unit. Similarly, the distance information is received, and the distance between the fixed station and the corresponding moving body is notified based on the distance information.
As a result, the traveling position of the moving body is notified, as in the second aspect.

Further, by using the display device according to the invention 4 as the display device and the audio device according to the invention 5 as the notification means in the system according to any one of the inventions 1 to 3, the moving body can be relatively easily manufactured. The traveling position of is notified in real time. Further, according to the sixth aspect, by using the liquid crystal display as the display device according to the fourth aspect, the traveling position of the moving body is more easily notified.

According to invention 7, invention 1 to invention 6
The distance information can be easily obtained by using the specified low power radio as the communication means of the mobile body and the communication means for the mobile body of the fixed station in any one of the above-mentioned systems. Is notified.

[0017]

2 is a block diagram showing the configuration of an embodiment of the system according to the present invention. In addition, this embodiment is an example in which the inventions 1 to 6 are combined. This system
It is composed of a bus (moving body) side device 01 and a bus stop (fixed station) side device 02. The number of buses and bus stops is generally plural, but the figure shows one.

First, the bus side device 01 is constructed as follows. C performs communication control, determines the distance between the bus or the bus stop and itself based on the radio waves received from the other bus side or the bus stop side, and further controls the bus side device 01.
PU, ROM 2 that stores its own system number, data required when communicating at bus stops and buses, the relationship between the strength and distance of received radio waves, and control programs, and 3 communicates between buses. RA that stores time data
M and 4 are serial I / Fs for communicating with a wireless device, and 5 is a bus side wireless device for communicating with a bus stop or a wireless device on the bus side, which uses a specific low power wireless device or the like.

Next, the bus stop side device 02 is constructed as follows. Reference numeral 6 denotes a bus stop side wireless device for communicating with a bus side wireless device, which uses a specific low power wireless device or the like. Reference numeral 7 is a serial I / F for communicating with a wireless device, and 8 is communication control, and the presence / absence and number of relays, distance information between buses or between buses and bus stops are read from the bus stop, based on data received from the bus side. A CPU that determines the distance to the bus and further controls the bus stop side device 02, 9 is a ROM that stores the bus operation timetable for each system, the relationship between the number of relays and the distance from the bus stop, and a control program RAM for storing bus data, 11 is a timer for timekeeping to issue a transmission request to the bus at a fixed interval before the scheduled arrival time according to the bus operation timetable, and 12 is a liquid crystal for displaying the traveling position of the bus. The display 13 is an audio device equipped with a speaker or the like for informing the running position of the bus by voice.

FIG. 3 is a flow chart showing the operation of the main part of the present invention. The operation will be described with reference to FIG.
First, the operation of the bus stop side device 02 will be described. On the bus stop side, the CPU 8 determines whether or not it is a fixed time before the scheduled arrival time of the relevant bus based on the bus operation timetable for each system read from the ROM 9 and the timer 11 (step S1). If yes (branch Y), the CPU 8 requests the bus stop side wireless device 6 to communicate with the bus side wireless device via the serial I / F 7 (step S2).

Next, it is judged whether or not the bus can be communicated with the corresponding bus (step S3), and when the bus can be communicated (branch Y), the distance from the bus stop is notified by the display 12 and the audio device 13 by the data from the bus. (Step S
4). When communication is not possible (branch N), a bus that can be called is sequentially found from the bus closest to the bus stop or the bus farthest from the bus operating timetable of another system (step S5). If there is a communicable bus, a command is transmitted to the bus to communicate with the corresponding bus and to transmit the distance to the bus (step S6). In this way
When the distance from the relevant bus cannot be obtained from the bus stop by relaying one bus, the data of the relevant bus is further relayed to receive the data of the relevant bus (step S7), and the relayed buses are connected to each other and to the fixed station. The distance from the bus stop is calculated from the distance data, and the distance is displayed in the same manner and is also announced by voice (step S8).

Next, the operation of the bus side device 01 will be described. When the bus side receives the data from the bus stop (step S9), the bus side determines whether or not the bus stop side is requesting its own data from the system number and the bus number stored in the ROM 2 (step S10). When the data is requested (branch Y), the distance data between the bus stop and itself determined by the radio wave intensity from the bus stop is transmitted to the bus stop side (step S11). When the data of its own is not requested (branch N), the data of the bus for which transmission is requested is read out, communication is performed with respect to the bus (step S12), and the data of the corresponding bus is transmitted to the bus stop side (step S13). ). At this time, the distance between the buses is determined by the strength of the radio wave of the other party received by each bus.

Although FIG. 3 shows both the relevant bus side and the other bus side, the operation is the same as described above.
That is, when the bus is the corresponding bus, the data is transmitted (step S11), and when the bus is another bus, the data is communicated with the bus (step S12). FIG. 4 is a diagram showing an example of the operating state of the present invention. 14 is a bus stop, and 15, 16 and 17 are buses. Dotted lines indicate radio waves between buses and between bus stops and between buses.

As described above, when the bus stop side device 02 installed at the bus stop 14 approaches the scheduled arrival time of the bus, it communicates with the corresponding bus to display the distance to the bus stop and inform it by voice. When the communication with the applicable bus is not possible, the data of the applicable bus is received by relaying the communicable bus, and the distance from the bus stop is displayed and voiced. This allows a person waiting at the bus stop to know how far away the bus is from the bus stop.

[0025]

According to the invention 1, in response to a call from a fixed station (for example, a bus stop), a mobile body (for example, a bus) determines the distance from the fixed station and returns the distance information to the fixed station,
Since the fixed station notifies the distance between the fixed station and the moving body based on the distance information, the traveling position of the moving body can be notified in real time. Therefore, for example, the traveling position of the bus can be known at the bus stop, and accurate information service can be provided to the user.

According to the second aspect of the invention, the distance information can be obtained via another mobile unit even when the mobile unit of the first aspect cannot directly communicate with the mobile unit, so that the position of the mobile unit can be reliably notified. Further, according to the third aspect, when communication with the next moving body that is first called in the second aspect cannot be performed, distance information can be obtained via the next moving body.
Even if the mobile unit and the fixed station are far from each other, the position of the mobile unit can be reliably notified.

Further, according to the invention 4, since the display device is used as the notification means, the current position of the moving body can be easily seen. Further, according to the fifth aspect, since the voice is used as the notification means, the current position of the moving body can be heard by the voice, and the notification can be performed even when the image display is difficult to see due to the ambient conditions.

According to the sixth aspect of the invention, since the liquid crystal display is used as the notifying means in the fourth aspect of the invention, power saving and downsizing of the fixed station side device can be achieved. Furthermore, according to the invention 7,
Since the communication means of the mobile body and the communication means for the mobile body of the fixed station are the specific low power radio, the system construction is relatively simple and economical, and the distance information can be easily obtained.

[Brief description of drawings]

FIG. 1 is a diagram of a complaint approaching system of a moving body approach notification system according to the present invention

FIG. 2 is a configuration block diagram showing a mobile unit approach notification system according to an embodiment of the present invention.

FIG. 3 is a flowchart showing the operation according to the invention of FIG.

FIG. 4 is a diagram showing an embodiment of a moving body approach notification system based on the invention of FIG.

FIG. 5 is a diagram showing an example of a conventional moving body approach notification system.

[Explanation of symbols]

1, 8 ... CPU, 2, 9 ... ROM, 3, 10 ... RAM,
4, 7 ... Serial I / F, 5 ... Bus side radio, 6 ... Bus stop side radio, 11 ... Timer, 12 ... Display, 13
... audio device, 14 ... bus stop, 15, 16, 17 ... bus.

─────────────────────────────────────────────────── --Continued from the front page (56) Reference JP-A-6-301895 (JP, A) JP-A-6-282796 (JP, A) JP-A-5-67296 (JP, A) JP-A-62-1 271197 (JP, A) JP 62-186400 (JP, A) JP 59-25437 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G08G 1/123-1 /13

Claims (7)

(57) [Claims] 1. A system comprising a plurality of mobile units each having a mobile station and a plurality of fixed stations, which move according to a predetermined operation plan, each mobile unit identifying data for identifying itself. Storage means for storing the information, communication means for communicating with other stations, distance determination means for determining the distance to the other station from the received data, and when the communication means receives a call from a fixed station, the call is Communication is performed to determine whether or not the call is to the self by the identification data stored in the storage means, and when it is a call to the self, communication is made so that the distance information between the fixed station and the self by the distance determination means is returned to the fixed station. The fixed station is provided with a mobile communication control means for instructing the means, and each fixed station notifies the bus stop side storage means for storing a predetermined operation plan, the mobile communication means for communicating with the mobile body, and the distance information. Based on the operation means stored in the notification means and the bus stop side storage means, the corresponding mobile body is called at a predetermined time, the distance information between the mobile body and the fixed station is received from the corresponding mobile body, and based on the distance information. And a fixed-station-side communication control means for instructing the notification means to notify the distance between the mobile and the fixed station. 2. A system composed of a plurality of mobile units each having a mobile station and a plurality of fixed stations, which move according to a predetermined operation plan, wherein each mobile unit has identification data for identifying itself. Storage means for storing the information, communication means for communicating with other stations, distance determination means for determining the distance to the other station from the received data, and when the communication means receives a call from a fixed station, the call is Whether or not it is a call to itself is determined by the identification data stored in the storage means, and if it is not a call to itself but a communication command with the corresponding mobile body, it becomes a relay mobile body and receives from the fixed station. The communication means is instructed to communicate with the mobile station called by the data, and to return the distance information between the fixed station and itself by the distance determination means and the distance information between the mobile station and itself to the fixed station. Each fixed station has a bus stop storage means for storing a predetermined operation plan, a mobile communication means for communicating with a mobile body, an informing means for informing distance information, and a bus stop for each fixed station. If the corresponding mobile body is called at a predetermined time based on the operation plan stored by the side storage means and communication with the corresponding mobile body is not possible, another mobile body other than the corresponding mobile body is called as a relay mobile body in a predetermined order and communication is possible. The notification means receives the distance information between the relay mobile unit and the fixed station and the distance information between the relay mobile unit and the corresponding mobile unit, and notifies the distance between the corresponding mobile unit and the fixed station based on the distance information. A mobile unit approach notification system, comprising: fixed station side communication control means for giving an instruction to the mobile station. 3. A system comprising a plurality of mobile units each having a mobile station and a plurality of fixed stations, which move according to a predetermined operation plan, each mobile unit identifying data for identifying itself. Storage means for storing the information, communication means for communicating with other stations, distance determination means for determining the distance to the other station from the received data, and when the communication means receives a call from a fixed station, the call is If it is not a call to itself, and it is not possible to communicate with the corresponding mobile body called by the communication command from the fixed station, it will relay itself. As a mobile unit, another relay mobile unit is called, at least one other relay mobile unit is relayed to communicate with the corresponding mobile unit, distance information between the fixed station and itself by the distance determining unit, Communication means for returning to the fixed station the distance information between the relay mobile body and the relay mobile body, the distance information between the relay mobile bodies other than itself, and the distance information between the relay mobile body communicating with the mobile body and the mobile body. Each fixed station has a bus stop side storage means for storing a predetermined operation plan, a mobile communication means for communicating with the mobile body, and a notifying means for notifying distance information. Then, when the corresponding mobile body is called at a predetermined time based on the operation plan stored by the bus stop side storage means, and when communication with the corresponding mobile body is not possible, other mobile bodies other than the corresponding mobile body are called as relay mobile bodies in a predetermined order. , The distance information between the relay mobile unit and the fixed station that can communicate, the distance information between each relay mobile unit, and the distance information between the relay mobile unit and the corresponding mobile unit that have communicated with the corresponding mobile unit are received, and based on the distance information Applicable Mobile approach warning system characterized by comprising a fixed station side communication control means for instructing to notification means to notify the distance between the body and the fixed station. 4. The moving body approach notification system according to any one of claims 1 to 3, wherein the notification means is a display device. 5. A mobile unit approach notification system according to any one of claims 1 to 3, wherein the notification means is a voice device. 6. The moving body approach notification system according to claim 4, wherein the display device is a liquid crystal display. 7. The system according to any one of claims 1 to 6, wherein the communication means of the mobile body and the communication means for the mobile body of the fixed station are based on specific low power radio. Mobile approach notification system.