JP3232923B2 - 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 a running position of a moving body such as a route bus by using an image or a sound.

[0002]

2. Description of the Related Art As a conventional moving body approach notification system, the following is known. That is, for example, a wireless device is installed at a bus and a bus stop, and when it is detected that the bus has arrived at the bus stop, the office is contacted via a telephone line. The business office notifies the next bus stop via the telephone line that the bus has left the previous bus stop.
Thereby, the passenger waiting at the bus stop can know the approach of the bus.

FIG. 6 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 business office. A wireless device is installed at each bus and at the bus stop. For example, when the bus 101a arrives at the bus stop 102a, the arrival is detected wirelessly and the business office 104 is contacted via the telephone line 103a. Then
The business office 104 notifies the bus stop, for example, the bus stop 102b, that the bus 101a stops next, via the telephone line 103b, for example, 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 a telephone line is required between each bus stop and the office, line construction is required when the bus stop is installed. For this reason, the system scale becomes large on routes with a wide operating range or routes with many buses and bus stops, and it takes time and cost to introduce the system. In addition, the system may not be able to be introduced to an existing bus stop where it is difficult to add telephone line construction or depending on geographical conditions.

[0005] Further, since communication between the bus stop and the business office uses a telephone line, a communication cost (line usage fee) is required each time the bus arrival is notified, and system operation costs are incurred.
Further, since the current running position of each bus is communicated to the next bus stop by a telephone line when departing from the bus stop, it is only known that the next bus stop has left the previous bus stop. Therefore, the passengers at the bus stop can predict the arrival time when the bus is within sight, but when the bus does not come within the sight line and the scheduled arrival time has passed, the current position of the bus is not known. Unable to predict arrival. For this reason, since accurate information services cannot be provided to bus users, there is a risk that passengers will use other transportation means.

SUMMARY OF THE INVENTION An object of the present invention is to provide a moving body approaching notification system in which the system construction is relatively simple and economical, and the running position of a moving body such as a bus can be recognized in real time.

[0007]

As shown in FIG. 1, the moving body approach notification system according to the first aspect of the present invention comprises a plurality of moving bodies X and a plurality of fixed stations Y using a position detection system using artificial satellites. System, wherein each mobile unit X
Are satellite communication means A for collecting position detection information from artificial satellites, and mobile object position detection means B for detecting the position of the mobile object X based on the position detection information collected by the satellite communication means A.
A moving body position information storage means C for storing position information of the moving body X detected by the moving body position detecting means B; a fixed station communication control means D for controlling communication with the fixed station Y; And fixed station communication means E for communicating with each fixed Y
The station is a fixed station position information input means F for inputting the position information of the fixed station Y, the position information of the fixed station Y input by the fixed station position information input means F, and the movement obtained by the mobile communication means I. Position information storage means G for storing position information of body X
Mobile communication control means H for controlling communication with mobile X, mobile communication means I for communicating with mobile X, map information storage means J for storing map information, position information storage means A notifying unit K for notifying the position information of the moving object X based on the position information stored in G and the map information stored in the map information storage unit J.

According to a second aspect of the present invention, there is provided a moving body approach notification system.
As shown in FIG. 2, in the system of the first aspect, the fixed station position information input means includes a satellite communication means A for collecting position detection information from an artificial satellite, and a fixed station based on the position detection information collected by the satellite communication means A. And a fixed station position detecting means L for detecting the position of Y. According to a third aspect of the present invention, in the system of the first or second aspect, the notifying means is a display device, and the position information of the moving object is converted into characters, symbols, illustration characters, and colors corresponding to the type of each moving object. , Brightness, and line type.

According to a fourth aspect of the present invention, there is provided a moving body approach notification system.
In the system according to the first or second aspect, the notification means is a voice. A moving object 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 means is a liquid crystal display.

[0010]

According to the first aspect of the invention, on the mobile side, the satellite communication means receives radio waves from artificial satellites and collects position detection information. Is detected, and this position information is stored in the moving body position information storage means.

The fixed station communication control means instructs the fixed station communication means to wait for reception of a communication request from the fixed station. If there is a communication request from the fixed station side, the fixed station communication control means transmits the position information of the moving object stored in the moving object position information storage means via the fixed station communication means. On the other hand, on the fixed station side, the position information stored by the fixed station position information input means is stored in the position information storage means.

When the mobile communication control means instructs the mobile communication means to request communication with the mobile body, the fixed station communication means and the mobile station communication means communicate as described above. With this communication, the position information of the moving object is stored in the position information storage means on the fixed station side. The communication control means for mobile unit sequentially issues the communication request to the mobile units which need the position information, and stores the position information of the mobile unit in the position information storage unit.

The position information stored in the position information storage means and the map information stored in the map information storage means in advance are notified from the fixed station by the notification means. As described above, according to the first aspect, the current position of the moving object is notified in real time by a relatively simple system that does not require line construction.

Inventions 2 to 5 have the same function as described above, but have the following features. In the second aspect, the satellite communication means and the fixed station position detecting means have the same functions as those of the two means on the moving body side in the first aspect. Therefore, the position information of the fixed station is stored in the position information storage means without inputting the position information of the fixed station from the outside in advance. In invention 3,
Since the notification means is a display device, the position information can be seen with the eyes, and the position information is displayed by at least one of characters, symbols, illustration characters, colors, brightness, and line types, so that the type of the moving object can be easily determined. Be identified.

[0015] In the invention 4, since the notification means is a voice, the position information can be heard. In the fifth aspect, since the notification means is a liquid crystal display, the system can be constructed relatively easily.

[0016]

FIG. 3 is a block diagram showing an embodiment of a system according to the present invention. This embodiment is an example in which inventions 1 to 5 are combined. This system is
It comprises a bus (mobile) side device 01 and a bus stop (fixed station) side device 02. The current position of each bus-side device 01 and bus-stop-side device 02 is determined by a satellite positioning system using artificial satellites, so-called GPS (Global Posi).
detection system). In general, the number of buses and bus stops is plural, but in FIG.
It shows a car.

First, the bus-side device 01 is configured as follows. 1a is an antenna for receiving a position detection radio wave from an artificial satellite, 2a is an amplifier for amplifying the received radio wave, 3 is a bus side device for detecting the current running position of the bus based on the radio wave amplified by the amplifier 2a, and 3a. CP that controls
U, 4 is a ROM for storing data necessary for communication with the bus stop side device 02, 5 is a RAM for storing information on the current running position of the bus detected by the CPU 3, and 6 is a serial for communicating with the radio 7. The I / F 7 is a wireless device for communicating with a wireless device 8 of the bus stop side device 02 described later. In addition, as this radio, for example, a specific low-power radio or the like can be used.

Next, the bus stop side device 02 is constituted as follows. Similar to the bus-side device 01, 1b is an antenna for receiving a positioning radio wave from an artificial satellite, 2b is an amplifier for amplifying the received radio wave, and 10 is a bus stop based on the radio wave amplified by the amplifier 2b to detect the current position of the bus stop. In addition, the CPU controls the bus stop side device 02. 8 is a bus side device 0
1 is a wireless device for communicating with the wireless device 7, 9 is a serial I / F for communicating with the wireless device 8, 11 is a ROM for storing map information around the bus stop, and 12 is a wireless device for communicating with the bus side device. RA for storing data and detected position information
M and 13 are LCDs for displaying the traveling position of the bus, etc.
(Liquid crystal display) and 14 are audio devices having a speaker or the like for notifying the traveling position of the bus or the like by voice. As the ROM 11, for example, in addition to a general semiconductor memory, a CD-ROM, an IC card, a magneto-optical disk, or the like can be used.

FIG. 4 is a flowchart 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-side device 01 will be described. When the antenna 1a receives a radio wave from an artificial satellite, the amplifier 2a amplifies the signal (step S1), the CPU 3 detects the current traveling position of the bus (step S2), and outputs the detected position information to the RA.
It is stored in M5 (step S3). After the end of step S3, it waits for a communication request from the bus stop side device 02 (step S4). When there is a communication request from the bus stop side (branch Y), the bus side radio 7 communicates with the bus stop side radio 8 (step S5). At the time of this communication, the CPU 3 reads the travel position information of the bus stored in the RAM 5 in step S3, and transmits the information to the wireless device 8 on the bus stop side via the serial I / F 6 and the wireless device 7. After the communication, the process returns to step S1.

Next, the operation of the bus stop side device 02 will be described. As in the operation of the bus-side device 01, the antenna 1b
Receives the radio wave from the artificial satellite, the amplifier 2b amplifies (step S6), the CPU 10 detects the position of the bus stop (step S7), and stores the position information in the RAM 12 (step S8). Steps S6 to S so far
8 may be used only when the bus stop is installed at a predetermined place.

Steps S9 to S13 form a communication loop. In this loop, the bus stop side sequentially communicates with the bus side to receive and store the positional information of each communicated bus. The communication target bus is, for example, a system bus passing through a bus stop. That is, the bus stop side device 02
CPU 10 requests the wireless device 8 to communicate with the bus-side wireless device 7 via the serial I / F 9 (step S1).
0).

Upon receiving the communication request, the bus-side wireless device 7 that has been waiting for the communication request in step S4 on the bus side communicates with the bus-stop-side wireless device 8 as described above (the bus-side step S5 and the bus stop). Side step S11). The wireless device 8 that has received the position information from the bus side receives the C via the serial I / F 9.
The data is sent to the PU 10, and the CPU 10 stores the bus position information in the RAM 12 (step S12).

The CPU 10 repeats this operation for the buses corresponding to the bus stops stored in the ROM 11, and stores the positions of the buses near the bus stop in the RAM 12.
Thus, the process exits the communication loop and proceeds to step S14. It should be noted that information that a bus that could not communicate is not traveling in the communication range is stored. Next, the bus position information stored in the RAM 12 as described above and R
The map around the bus stop stored in OM11 and the LCD
(Step S14), and furthermore, the running position of the bus is notified by voice via a speaker (step S15), and the step on the bus stop side is terminated.

The operation on the bus stop side may be performed at a predetermined time interval using, for example, a timer, or the operation may be started from outside the system when the bus leaves the bus stop. FIG. 5 is a diagram showing an example of the operation state of the present invention. 15 is an artificial satellite, 16 and 17 are bus stops, and 18 is a bus. The solid line is a radio wave from an artificial satellite, and the dotted line is a radio wave between a bus and a bus stop. Although there are a plurality of artificial satellites and buses that emit radio waves for position measurement, only one is shown in the figure.

At the time of installation, the bus stops 16 and 17 are
And receives the radio wave from the device to detect the position. The bus 18 receives radio waves from artificial satellites and detects and stores the running position of the bus. The bus stop side requests position information for the buses of the system and stores the position information of the bus with which communication was possible. Then, the position of the bus is displayed together with the map of the surrounding area stored at the bus stop side, and is also notified by voice.

Thus, the passengers waiting at the bus stop can know the traveling position of the bus for the system accurately, so that the most suitable bus can be used. In the above-described embodiment, the bus stop side also detects the position using the radio wave of the artificial satellite. However, since the position of the bus stop is often fixed, the bus stop position is input to the bus stop side device in advance and stored. May be.

In addition, a display for displaying an image may be used for displaying the traveling position of the bus in addition to the liquid crystal display. Furthermore, when there are many systems and buses passing through the same bus stop, for example, the bus position is displayed with a system number or color-coded illustration, the display of the closest bus blinks, or Different routes may be distinguished by the type of line.

In the embodiment, the moving object is a bus.
In addition, the present invention can be applied to vehicles having a relatively large number of services such as taxis.

[0029]

According to the first aspect of the present invention, the current position of a mobile unit (for example, a bus) is detected by using a positioning system using an artificial satellite, and this position information is collected wirelessly by a fixed station (for example, a bus stop) and the surroundings are collected. Notify with images etc. along with map information. Therefore, the current position of the moving object can be accurately and in real time, and the service to the user is improved.

The satellite positioning system is open to the public free of charge, and communication between mobile and fixed stations is also wireless, so no line work is required. If a specific low-power radio is used, no line usage fee is required. Thus, an economical system can be constructed relatively easily. According to Inventions 2 to 5, in addition to the effects of Invention 1, the following effects are further obtained. In a second aspect, the fixed station position information input means in the first aspect is constituted by a satellite communication means and a fixed station position detecting means. Therefore, since the position of the fixed station can be easily detected in the same manner as the position detection on the moving body side, it is convenient when the fixed station side such as a bus stop is moved to another place.

In the third aspect, since the display device is used as the notification means, the current position of the moving object can be seen in the image. Furthermore, since the position information of the moving object is displayed in characters, symbols, illustration characters, colors, luminances, and line types corresponding to the type of the moving object, identification is possible when the number of moving objects such as bus lines or the number of buses is large. It will be easier. According to the fourth aspect, since the voice is used as the notification means, the current position of the moving object can be heard with a speaker or the like. Therefore, when an image display is difficult to see due to ambient conditions or the like, or when a person who is blind is notified.

In the invention 5, since the liquid crystal display is used as the notifying means, the power saving and downsizing of the fixed station device can be achieved.

[Brief description of the drawings]

FIG. 1 is a diagram corresponding to a claim of a moving body approach notification system according to the first invention.

FIG. 2 is a diagram corresponding to a claim of the moving object approach notification system according to the second aspect of the present invention.

FIG. 3 is a configuration block diagram showing a moving body approach notification system according to an embodiment of the present invention;

FIG. 4 is a flowchart showing an operation based on the invention of FIG. 3;

5 is a diagram of an embodiment of a moving object approach notification system based on the invention of FIG. 3;

FIG. 6 is a diagram showing an example of a conventional moving body approach notification system.

[Explanation of symbols]

01: bus side device, 02: bus stop side device, 1a, 1b ...
Antennas, 2a, 2b ... amplifier, 3,10 ... CPU,
4, 11 ROM, 5, 12 RAM, 6, 9 serial IF, 7, 8 radio, 13 LCD, 14 audio device, 15 satellite, 16, 17 bus stop, 18 bus.

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁷ identification code FI // G08G 1/127 H04B 7/26 106A (58) Field surveyed (Int. Cl. ⁷ , DB name) G08G 1/0969- 1/137 G01C 21/00 G01S 5/14 H04B 7/26

Claims (5)

(57) [Claims] 1. A system comprising a plurality of mobile units and a plurality of fixed stations using a position detection system based on artificial satellites, wherein each mobile unit collects position detection information from artificial satellites. Means, moving object position detecting means for detecting the position of the moving object based on the position detecting information collected by the satellite communication means, and moving object position information storing means for storing the position information of the moving object detected by the moving object position detecting means And fixed-station communication control means for controlling communication with the fixed station; and fixed-station communication means for communicating with the fixed station. Each fixed station inputs fixed-station position information for inputting fixed-station position information. Means, position information storage means for storing the position information of the fixed station input by the fixed station position information input means, and the position information of the mobile object obtained by the anti-mobile communication means, and controlling communication with the mobile object. Pair Mobile communication control means; mobile communication means for communicating with the mobile; map information storage means for storing map information; position information stored in the position information storage means; and map information stored in the map information storage means. A moving body approach notification system, comprising: a notifying unit for notifying the position information of the moving body based on the map information. 2. The system according to claim 1, wherein the fixed station position information input means collects position detection information from the artificial satellite, and the position of the fixed station is determined based on the position detection information collected by the satellite communication means. A moving body approach notification system, comprising: a fixed station position detecting means for detecting. 3. The system according to claim 1, wherein the notifying means is a display device, and the position information of the moving object is represented by a character, a symbol, an illustration character, a color, and a luminance corresponding to the type of each moving object. A moving object approach notification system, wherein the information is displayed by identifying at least one of the line types. 4. A moving object approach notification system according to claim 1, wherein the notification means is a voice. 5. A moving body approach notification system according to claim 1, wherein the notification means is a liquid crystal display.