JP4277730B2 - Position information communication device and communication system - Google Patents

Description

  The present invention relates to a position information communication apparatus and a communication system capable of acquiring position information of its own apparatus and transmitting position information to the other communication apparatus in response to a position information request from another communication apparatus.

Conventionally, in response to a position information request (inquiry) from another communication device, a pedestrian portable terminal as a position information communication device that acquires the position information of the own device and transmits the position information to the other communication device It has been known. For example, as disclosed in Patent Document 1, position information is exchanged with an in-vehicle terminal that is another communication device. In this case, the portable terminal for pedestrians acquires the position information of its own device from the GPS satellite and transmits the position information to the in-vehicle terminal in response to the inquiry from the in-vehicle terminal. When receiving the position information from the mobile terminal for pedestrians in the in-vehicle terminal, for example, the position of the mobile terminal for pedestrians is displayed on the display device, or if the mobile terminal for pedestrians is located nearby, the driver is voiced. The vehicle is warned, or the vehicle is decelerated and controlled to ensure safety.
JP 7-306995 A

However, in-vehicle terminals periodically make inquiries and receive responses (position information) from a large number of mobile terminals for pedestrians successively. However, if there are too many responses, communication failure may occur. In this case, the pedestrian often walks in a safe place as seen from the vehicle or is in a safe place, and it does not require much position information reception.
The present invention has been made in view of the above circumstances, and its purpose is to execute or cancel position information transmission to other communication devices according to the surrounding situation of the own device. It is an object of the present invention to provide a position information communication device and a communication system that can minimize communication concentration on the device.

According to the position information communication device of the first aspect of the present invention, it is determined whether or not it is necessary to transmit the position information. When the own apparatus is electrically or mechanically connected to or installed in another device, transmission is not required. and determining transmission necessity determination means, when a location information request, and no response when being judged transmitted sending unnecessary location information when it is determined that the transmission necessity by the transmission necessity determining means Since the transmission control means is provided, transmission can be made unnecessary when the own apparatus is electrically or mechanically connected or installed to another device, and communication concentration on the partner communication apparatus can be reduced.

According to the position information communication device of the invention of claim 2, it is determined whether or not transmission is required for the position information, and it is determined that transmission is not required when it is determined from the altitude signal of the GPS signal that the own device is on a pedestrian bridge. A transmission necessity determination means that transmits position information when there is a request for position information, and transmission when no transmission is required when it is determined that transmission is required by the transmission necessity determination means. Since the control means is provided, transmission of position information can be made unnecessary when the own apparatus is on the pedestrian bridge, and communication concentration with respect to the partner communication apparatus can be reduced.

According to the position information communication device of the invention of claim 3, it is determined whether or not the position information needs to be transmitted, and transmission is not required when the own apparatus is in a park, a building, a kindergarten, or a vehicle. and a determining transmission necessity determination means, when a location information request, and no response when being judged transmitted sending unnecessary location information when it is determined that the transmission necessity by the transmission necessity determining means Since the transmission control means is provided, transmission can be made unnecessary when the own apparatus is in a park, a building, a kindergarten, or a vehicle, and communication concentration on the partner communication apparatus can be reduced.

  First, FIG. 1 shows a pedestrian portable terminal 1 which is a position information communication device according to the present invention and an in-vehicle terminal 10 which is another communication device. The pedestrian portable terminal 1 and the in-vehicle terminal 10 constitute a communication system M. The pedestrian portable terminal 1 is carried by, for example, a pedestrian A shown in FIG. 2, and a control device 2 including a CPU and a GPS signal transmitted from a GPS satellite via an antenna 3. Communication with a communication device such as a GPS receiver 4 that receives the data, a memory device 5 that stores a control program for the portable terminal 1 for pedestrians, and other portable terminals for pedestrians or an in-vehicle terminal 10 that will be described later. And a radio data device 6, an antenna 7, an external connector 8, and a map data memory 9 storing a map database. The wireless device 6 is composed of, for example, Bluetooth. The map database stored in the map data memory 9 holds a road map base, a roadway with a sidewalk, a roadway without a sidewalk, a sidewalk, the width thereof, a building or facility, its size, a pedestrian bridge, and the like. . This map data memory 9 may be a built-in type, an external type, or may be acquired from an Internet server.

This pedestrian portable terminal 1 is given a machine name uniquely representing it by a user setting or the like, and is stored in the memory device 5. The control device 2 functions as a transmission permission determination unit and a transmission control unit as described later.
On the other hand, the in-vehicle terminal 10 includes a control device 11 including a CPU, a GPS receiver 13 that receives a GPS signal transmitted from a GPS satellite via an antenna 12, destination setting, route search, and map A navigation system 14 for controlling display control, vehicle position / direction recognition, etc., a memory device 15 storing map data and related facility data, a control program for the terminal 10 as a whole, a map and vehicle position display, A display device 16 composed of, for example, a liquid crystal display that controls route display and pedestrian position display, a speaker 17 for outputting route guidance, warnings, and the like, and a camera 18 for recognizing images of pedestrians, for example. A wireless device 19 for communicating with the pedestrian mobile terminal 1, an antenna 20 and an external connector 21 are provided. In addition, the said control apparatus 11 carries out data communication with the vehicle control apparatus of the own vehicle.

  Operations of the pedestrian portable terminal 1 and the in-vehicle terminal 10 will be described. First, an outline will be described with reference to FIG. The in-vehicle terminal 10 periodically performs an inquiry scan (S1) with respect to the unspecified pedestrian mobile terminal 1, and the pedestrian mobile terminal 1 that has received this inquiry determines whether transmission is necessary ( S2) If the transmission is necessary, position information is transmitted (response, S3), and the in-vehicle terminal 10 maps the position of the pedestrian portable terminal 1 (the position of the pedestrian A) based on the position information. At the same time, it is displayed on the display device 15. In this case, the in-vehicle terminal 10 may use position information for vehicle control. Moreover, if transmission is unnecessary, the portable terminal 1 for pedestrians performs a non-response process (S4).

  Next, the control operation of the control device 2 of the pedestrian portable terminal 1 will be described with reference to FIGS. FIG. 3 shows the contents of the transmission control process (transmission control means). When there is an inquiry from the in-vehicle terminal 10 (step P1), the control device 2 executes a transmission necessity determination process (transmission necessity determination means). The contents of this are shown in FIG. First, a position signal (GPS signal) is received from a GPS satellite and reception processing is performed (step Q1). Then, the map database is read from the map data memory 9 (step Q2), the received position signal is matched with the map database and the current position of the own machine (step Q3), and whether or not the current position is on the sidewalk (step Q4), If it is a sidewalk, it is judged whether it is within 1 m from a roadway (step Q5). That is, as shown in FIG. 7, it is determined that the road information and the sidewalk in the vicinity of the road 1m are considered as dangerous zones when viewed from the vehicle (step Q7). (Step Q6). In this case, it is determined that a roadway without a sidewalk is also a dangerous zone, that is, position information needs to be transmitted, and only a pedestrian bridge (which is calculated from the GPS signal height signal even on the roadway) or a sidewalk is a safety zone, that is, position information. It is determined that transmission is unnecessary.

If it is determined in step P3 in FIG. 3 that transmission is necessary (“YES”), an inquiry response process, that is, position information data transmission is performed in response to the inquiry from the in-vehicle terminal 10 (step P4). As shown in FIG. 5, the position information data is obtained by adding position information, position positioning time, moving direction, moving speed, and the like to the name of the own machine.
If it is determined in step P3 that transmission is not required ("NO"), no response processing is performed (step P5).

Thus, according to the portable terminal 1 for pedestrians of the present embodiment, it is determined whether or not transmission is required for the position information, and when there is a position information request from the in-vehicle terminal 10, the position is determined to be required for transmission. Since information is transmitted and no response is made when it is determined that transmission is unnecessary, position information can be transmitted only when necessary, and communication concentration on the in-vehicle terminal 10 can be reduced.
Furthermore, according to the present embodiment, since it is configured to determine whether transmission is necessary according to the current position situation around the own device, for example, a position where a pedestrian carrying the own device is safe with respect to the vehicle It is possible to determine that transmission is not necessary when the situation (for example, a position situation isolated from the roadway), and it is possible to determine that transmission is necessary when it is dangerous. Therefore, only position information in a dangerous situation as viewed from the vehicle is received, and the minimum necessary communication can be achieved with the in-vehicle terminal 10.

In particular, since it is determined that transmission is necessary when the aircraft is located in the roadway and its vicinity, it is determined that transmission is necessary when a pedestrian or bicycle is in a dangerous zone for traffic, and position information is transmitted. The necessary minimum communication can be achieved while ensuring the safety of the mobile user of the pedestrian mobile terminal 1.
FIG. 8 shows a second embodiment of the present invention. In this embodiment, the configuration as the position information transmission necessity determination means is different from that of the first embodiment. That is, the transmission necessity determination unit determines that transmission is not necessary when the own device is located in a specific area. Wireless devices Ea, Eb, Ec, Ed, which are communication devices for site area determination, are installed at corners of sites such as parks and kindergartens. When receiving radio waves from Ea, Eb, Ec, Ed, it is determined that the mobile terminal 1 for pedestrians is in a specific area such as a park or a kindergarten. Further, when the user goes out of the site like the carrier D, the radio wave reception from the radio devices Ea and Ed is lost, so that it is determined that the user has gone out of the site and it is determined that transmission is necessary. Therefore, in the case of the carrier D, the position information is transmitted when there is an inquiry from the in-vehicle terminal 10 (vehicle), and not transmitted in the case of the carrier C.

In this case, both the transmission necessity determination result related to the specific area and the transmission necessity determination result related to the current position situation of the first embodiment may be used (transmission necessity determination result priority).
In addition, the specific area is not limited to the above-described site, and can be applied when the vehicle is in a specific area such as a vehicle such as a bus.
FIG. 9 shows a third embodiment of the present invention. In this case, the pedestrian portable terminal 1 is provided with a transmission necessity setting switch 22 as an external input means, and the control device 2 determines that transmission is necessary if the transmission necessity setting switch 22 is input and set to transmission necessity. If the input is set so that transmission is unnecessary, it is determined that transmission is unnecessary. In this way, there is an advantage that the necessity of transmission can be set by the user's intention, for example.

1) When a radio wave from a specific communication device is received, it may be determined that transmission is unnecessary. For example, when receiving radio waves from road infrastructure, it is determined that the vehicle is located on the sidewalk, so there is no need to send location information. Also, as mentioned above, a communication device for determining the park area, a bus, etc. since the position information is also when receiving radio waves from unrelated communication device to the location information of a medium is unnecessary, the unnecessary sent in such a case can be satisfactorily determined.

  2) When the portable terminal 1 for pedestrians is stored or installed in a dedicated installation device when brought into the vehicle, or when it is connected to a charger for power charging, transmission of position information is not performed. It is unnecessary. In consideration of this, the transmission necessity determination unit may determine that transmission is not necessary when the transmission necessity determination unit is electrically or mechanically connected to or installed in another device.

The block diagram of the electrical constitution of the portable terminal for pedestrians and a vehicle-mounted terminal which shows 1st Example of this invention The figure for demonstrating the communication state of a vehicle and a pedestrian Flow chart for explaining transmission control processing Flowchart for explaining transmission necessity determination processing Diagram for explaining transmission data Sequence for explaining the outline of communication The figure which shows the classification of transmission necessity in the present position situation Schematic of the state of communication showing a second embodiment of the present invention FIG. 1 equivalent view showing a third embodiment of the present invention.

Explanation of symbols

In the drawings, M is a communication system, 1 is a portable terminal for pedestrians (position information communication device), 2 is a control device (transmission necessity determination means, transmission control means), 10 is an in-vehicle terminal (other communication devices), 22 Indicates a transmission necessity setting switch (external input means).

Claims (3)

In response to a position information request from another communication device, the position information communication device is capable of acquiring the position information of the own device and transmitting the position information to the other communication device,
A transmission necessity determination means for determining whether transmission is necessary for the position information, and determining that transmission is not required when the own apparatus is electrically or mechanically connected to or installed in another device;
Transmission control means for transmitting position information when it is determined that transmission is required by the transmission necessity determination means when there is a request for position information, and for not responding when it is determined that transmission is not required. A location information communication device characterized by that. In response to a position information request from another communication device, the position information communication device is capable of acquiring the position information of the own device and transmitting the position information to the other communication device,
A transmission necessity determination unit that determines whether transmission is necessary for the position information, and determines that transmission is not necessary when it is determined from the altitude signal of the GPS signal that the aircraft is on a pedestrian bridge;
Transmission control means for transmitting position information when it is determined that transmission is required by the transmission necessity determination means when there is a request for position information, and for not responding when it is determined that transmission is not required. A location information communication device characterized by that. In response to a position information request from another communication device, the position information communication device is capable of acquiring the position information of the own device and transmitting the position information to the other communication device,
A transmission necessity determination means for determining whether transmission is necessary for the position information, and determining that transmission is not required when the own apparatus is in a park, a building, a kindergarten, or a vehicle;
Transmission control means for transmitting position information when it is determined that transmission is required by the transmission necessity determination means when there is a request for position information, and for not responding when it is determined that transmission is not required. A location information communication device characterized by that.

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