JP2004297334A - Location information measuring terminal device, and location information measuring method by radio tag, as well as program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a location information measuring terminal device capable of measuring location information at a place where electric waves do not reach, and preventing a location information conversion table from enlarging in order to eliminate maintenance works. <P>SOLUTION: The location information measuring terminal device notifies a radio tag to a location information conversion device via a mobile communication network to collect its location information (radio tag ID reading / transmitting unit 121 and location information receiving unit 122), and collects collectively at that time an ID and location information of the radio tag buried within a range of a predetermined distance to accumulate in an accumulator 13 (location information accumulation control unit 123). In addition, highly accurate location information is retrieved by using together with a satellite navigation system and complementing mutually (location information mutually complementing unit 125). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is connected to a position information conversion device via wireless communication, reads a wireless tag ID from a wireless tag embedded in an arbitrary place in a facility, transmits the wireless tag ID to the position information conversion device, and measures position information. The present invention relates to a position information measurement terminal device, a position information measurement method using a wireless tag, and a program.
[0002]
[Prior art]
2. Description of the Related Art A GPS device using a navigation radio wave by a GPS satellite (Global Positioning System) for positioning the current position is known. This GPS device receives navigation radio waves from a plurality of GPS satellites to detect its current position, and can detect its position (latitude / longitude / altitude) on a global scale. it can.
[0003]
According to the method using the GPS satellite, it was difficult to grasp the position information in a place where the reception intensity of the radio wave from the satellite falls, such as inside a building or an underground shopping mall. There has been proposed a method of using a PHS (registered trademark; Personal Handy Phone System) terminal to supplement the measurement of position information by measuring the electric field strength (see Patent Document 1).
When a GPS satellite is used, an error of about several meters occurs. For this, a method of correcting measurement of position information by reading a wireless tag embedded in a facility has been considered (Patent Document 2). reference). In addition, a system is proposed in which the wireless tag reader embedded in the facility detects the location information of a third party carrying the wireless tag, and requests the center to confirm the location information using a communication device connected to the wireless tag reader. (See Patent Document 3).
[0004]
[Patent Document 1]
JP-A-10-260241 [Patent Document 2]
JP 2003-16219 [Patent Document 3]
JP 2001-101588 A
[Problems to be solved by the invention]
However, according to the above-described position information positioning using the GPS satellites (including complementation with a PHS (registered trademark) terminal / wireless tag), there are the following problems. That is, in the method of performing complementation using a PHS (registered trademark) terminal, complementation cannot be performed in a place where radio waves of PHS (registered trademark) do not reach, and accurate position information cannot be measured. Also, in the method of complementing with wireless tags, when position information is located in a wide area, the number of wireless tags embedded in the facility increases, so it is not possible to convert the positional information of all wireless tags with a local terminal. It is difficult, and it is difficult for all the local terminals to follow the additional update of the wireless tag.
On the other hand, position information positioning using wireless tags has the following problems. That is, since the wireless tag reader is embedded in the facility, when position information is measured in a wide area, the number of wireless tag readers embedded in the facility increases, and the construction of infrastructure increases.
[0006]
The present invention has been made in view of the above circumstances, and notifies a position information conversion device of a wireless tag ID via wireless communication to collect the position information, and at that time, a wireless tag embedded within a predetermined distance range. By collecting the ID and its location information together, it is possible to measure the location information in places where radio waves do not reach, and also prevent the location information conversion table from becoming too large on the terminal side and eliminate the need for maintenance. It is an object of the present invention to provide a location information measuring terminal device, a location information measuring method using a wireless tag, and a program.
Further, it is also possible to provide a position information measuring terminal device, a position information measuring method using a wireless tag, and a program which enable highly reliable position information positioning by performing mutual complementation in combination with GPS navigation. Aim.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention is connected to a position information conversion device via wireless communication, reads an ID from a wireless tag embedded in an arbitrary place in a facility, and transmits the ID to the position information conversion device. A position information measuring terminal device for measuring position information by reading the ID of the wireless tag, and transmitting the ID to the position information conversion device via the wireless communication, a wireless tag ID reading transmission unit, A position information receiving unit that receives the position information of the wireless tag transmitted from the position information conversion device via the wireless communication, the ID of the wireless tag embedded within a predetermined distance range of the wireless tag, and the position information. And storing the received position information in a storage device, and extracting the position information when the position information corresponding to the read wireless tag is stored in the storage device, If not, the position information from the position information conversion device via the wireless communication via the wireless tag ID reading and transmitting unit, and the ID of the wireless tag embedded within a predetermined distance range of the wireless tag and its And a position information storage control unit that receives position information via a position information receiving unit and stores the position information in the storage device.
[0008]
According to the present invention, when the position information storage control unit stores the position information received by the position information receiving unit in the storage device, and the storage device stores the position information corresponding to the read wireless tag. If the location information is extracted and not accumulated, if the location information is not stored, the location information is transmitted from the location information converter via wireless communication via the location information receiving unit, and within a predetermined distance range of, for example, a radius of several km square of the wireless tag. By fetching the ID of the wireless tag embedded in the device and its position information and storing it in the storage device, the position information can be measured in places where radio waves cannot reach, and the position information conversion table on the terminal side is enlarged. Thus, it is possible to provide a position information measuring terminal device that can prevent the occurrence of maintenance and does not require maintenance.
Here, the “facility” refers to a fixed place such as a road, a braille block, or a floor of each floor of a building, in which a wireless tag is embedded, and the wireless tag has a different ID in each place. Possess. The “wireless tag” is a tag (RFID: Radio Frequency Identification) that identifies and manages a person or an object using a minute wireless chip. The data is stored in a tag with a size of several centimeters, which is excellent in environmental protection, and communicates with the reader using radio waves or electromagnetic waves. In recent years, tags that can be used semi-permanently without a battery have also appeared due to wireless power transmission technology from the antenna side.
[0009]
Further, in the present invention, when the position information measurement by the satellite navigation system is not normal, the radio wave received from the position information conversion device is used together with a satellite navigation system that receives navigation radio waves from a satellite to measure position information. Complementing with the position information of the tag, a position information mutual complementing unit that complements with the position information measured by the satellite navigation system when the position information of the wireless tag received from the position information is not obtained, Features.
[0010]
According to the present invention, the position information mutual complementing unit complements the position information of the wireless tag received from the position information conversion device via wireless communication when the measurement of the position information by the satellite navigation system is not obtained, and A position information measurement terminal device that enables highly reliable position information positioning by supplementing the position information measured by the satellite navigation system when the position information of the wireless tag received from the information conversion device cannot be obtained. Can be provided.
[0011]
In order to solve the above-mentioned problem, the present invention is connected to a position information conversion device via wireless communication, reads an ID from a wireless tag embedded in an arbitrary place in a facility, and transmits the ID to the position information conversion device. A position information measuring method using a wireless tag for measuring position information by reading the ID of the wireless tag and transmitting the ID to the position information conversion device via the wireless communication; Receiving the position information of the wireless tag received from the conversion device via the wireless communication, the ID of the wireless tag embedded within a predetermined distance range of the wireless tag, and the position information, and the received position When the information is stored in the storage device, and the position information corresponding to the read wireless tag is stored in the storage device, the position information is extracted, and the position information is not stored. Capturing the position information from the position information conversion device via the wireless communication, the ID of the wireless tag embedded within a predetermined distance range of the wireless tag, and the position information, and storing the information in the storage device. It is characterized by the following.
[0012]
In order to solve the above-mentioned problem, the present invention is connected to a position information conversion device via wireless communication, reads an ID from a wireless tag embedded in an arbitrary place in a facility, and transmits the ID to the position information conversion device. A program used for a position information measuring terminal device that measures position information by reading the ID of the wireless tag, and transmitting the ID to the position information conversion device via the wireless communication; Receiving the position information of the wireless tag received from the position information conversion device via the wireless communication, the ID of the wireless tag embedded within a predetermined distance range of the wireless tag, and the position information; The stored location information is stored in the storage device, and if the storage device stores the location information corresponding to the read wireless tag, the location information is extracted and stored. If not, the position information, the ID of the wireless tag buried within a predetermined distance range of the wireless tag and the position information from the position information conversion device via the wireless communication are fetched and stored in the storage device. And causing the computer to execute the steps.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a diagram cited for explaining a system configuration of a position information positioning system to which a position information measuring terminal device of the present invention is connected.
In FIG. 1, reference numeral 1 denotes a position information measuring terminal device of the present invention, which is connected to a position information conversion device 2 via a mobile communication network 3. The position information conversion device 1 includes a wireless tag reader 11, a control device 12, a storage device 13, a mobile communication device 14, and a GPS receiver 15.
[0014]
The wireless tag 10 is embedded in various places in the facility such as a road, a Braille block, and a floor on each floor of a building, and each has a unique ID. The wireless tag reader 11 supplies the ID of the wireless tag 10 embedded in the facility to the reading control device 12.
If the ID read by the wireless tag reader 11 is not stored in the storage device 13, the control device 12 accesses the position information conversion device 2 via the mobile communication device 14 and the mobile communication network 3 and corresponds to the ID. , And the ID of the wireless tag buried within a predetermined distance range of, for example, several kilometers in radius and its position information. When the read ID is stored in the storage device 13, the position information is extracted from the storage device 13.
[0015]
The mobile communication device 14 transmits the ID received by the wireless tag reader 11 to the position information conversion device 2 and receives the position information received from the position information conversion device 2 and the position information corresponding to the surrounding wireless tag IDs. To the control device 12.
Here, it is assumed that the position information is not held locally by the position information measuring terminal device 1 but is held by the position information converting device 2 at the center, and the position information measuring terminal device 1 The ID is read, the ID is transmitted to the position information conversion device 2 via the mobile communication device 14 under the control of the control device 12, and the position information of the wireless tag is acquired from the position information conversion device 2. I have.
Note that the GPS receiver 15 receives the position information based on the GPS positioning and transfers it to the control device 12. Here, highly reliable position information is obtained by using the wireless tag positioning and the GPS positioning together and complementing each other. Details will be described later.
[0016]
FIG. 2 is a block diagram showing the internal configuration of the position information measuring terminal device of the present invention in a functionally developed manner, and mainly corresponds to the control device 12 shown in FIG.
The position information measuring terminal device of the present invention includes a wireless tag ID reading and transmitting unit 121, a position information receiving unit 122, a position information accumulation control unit 123, a GPS positioning unit 124, and a position information mutual complementing unit 125. .
The wireless tag ID reading and transmitting unit 121 has a function of reading the ID of the wireless tag 10 embedded in various places in the facility and transmitting the ID to the position information conversion device 2 via the mobile communication network 3. The receiving unit 122 has a function of receiving the position information of the wireless tag transmitted from the position information conversion device 2 via the mobile communication network 3, the ID of the wireless tag group embedded within a predetermined distance range, and the position information. Have.
[0017]
The position information storage control unit 123 stores the received position information in the storage device 13 and extracts the position information when the position information corresponding to the wireless tag 10 read by the storage device 13 is stored. If the wireless tag has not been stored, the position information is transmitted from the position information conversion device 2 via the mobile communication network 3 via the position information receiving unit 122 and the wireless tag group embedded within a predetermined distance range of the wireless tag 10. It has a function of taking in 10 IDs and their position information and storing them in the storage device 13.
According to the embodiment of the present invention, the positioning by the wireless tag and the positioning by the GPS satellite performed by the GPS positioning unit 124 are used together, and the position information mutual complementing unit 125 performs the measurement of the position information by the GPS positioning unit 124. Is not normal, the position information is supplemented with the position information of the wireless tag received from the position information conversion device 2, and when the position information of the wireless tag received from the position information conversion device 2 cannot be obtained, the position information is measured by the GPS positioning unit 124. It has a function to supplement with location information.
[0018]
FIG. 3 is a flowchart cited for explaining the operation of the position information measuring terminal device according to the present invention, and specifically shows a processing procedure of the position information measuring terminal program according to the present invention.
Hereinafter, the operation of the position information measuring terminal device of the present invention shown in FIG. 2 will be described in detail with reference to the flowchart shown in FIG.
[0019]
First, the wireless tag ID reading and transmitting unit 121 determines whether or not the wireless tag 10 is present based on whether or not the weak radio wave transmitted by the wireless tag 10 has been received (step S31). As a result, when the wireless tag 10 does not exist, the position information accumulation control unit 123 notifies the position information mutual complementing unit 125 that the wireless tag 10 does not exist. In response to this, the position information mutual complementing unit 125 performs the complementation by the GPS navigation positioning by receiving the position information from the GPS positioning unit 124 (Step S40).
[0020]
On the other hand, when the wireless tag 10 is present, the wireless tag ID reading and transmitting unit 121 reads the wireless tag ID (Step S32) and notifies the position information accumulation control unit 123. In response to this, the position information accumulation control unit 123 determines whether the position information corresponding to the received wireless tag ID already exists in the storage device 13 (Step S33). As a result, if the position information has already been stored, the position information is extracted from the storage device 13 (step S34). Then, it is determined whether or not the position information has been correctly extracted (step S35). If the position information cannot be extracted, complementation by GPS navigation positioning is performed (step S40). On the other hand, when the position information has been correctly extracted, the position information is provided (step S36).
[0021]
Next, in step S33, when there is no position information corresponding to the received wireless tag ID in the storage device 13, the wireless tag ID reading and transmitting unit 121 transmits the wireless tag ID to the position information conversion device 2 via the mobile communication network 3. (Step S37). The position information conversion device 2 is provided with a conversion table of the wireless tag ID and the position information, and is sequentially maintained. Here, the position information is indexed by the received ID of the wireless tag 10 and the position information is converted to the position information measurement terminal device 2. Send. At this time, a pair of a wireless tag ID embedded in a predetermined distance range of several km square and corresponding position information (hereinafter, referred to as a position information group) is also transmitted. This is a measure to be taken when the radio wave condition of the mobile communication network 3 is deteriorated.
[0022]
Next, the position information measuring terminal device 2 receives the position information and the position information group by the position information receiving unit 122, and stores the received position information in the storage device 13 under the control of the position information accumulation control unit 123. (Steps S38 and S39). FIG. 4 shows an example of the data configuration of the stored position information group. As shown in FIG. 4, wireless tag IDs and position information including latitude, longitude, and altitude are stored in pairs. Then, the position information is extracted from the storage device 13 (step S34). Then, it is determined whether or not the position information has been correctly extracted (step S35). If the position information cannot be extracted, complementation by GPS navigation positioning is performed (step S40). On the other hand, when the position information has been correctly extracted, the position information is provided (step S36).
[0023]
As described above, according to the present invention, the wireless tag 10 embedded in a fixed place in the facility communicates with the position information measuring terminal device 1 of the present invention whose position information is to be measured, and the ID of the received wireless tag is Is notified to the position information conversion device 2 to collect the position information. Also, by collecting information (position information group) indicating the relationship between the IDs of the surrounding wireless tags and the position information in one communication, the position can be accurately determined even in a place where the radio wave cannot reach depending on the radio wave condition of the mobile communication network 3. Information can be measured. The location information is not stored locally, and the center method (location information conversion device 2) is used. In the case of a wide area, the capacity of a conversion table indicating the relationship between the ID of the wireless tag and the location information becomes enormous, This is because enlargement of the storage device 13 and omission of data maintenance may occur.
[0024]
The mobile communication network 3 shown in FIG. 1 may be anything as long as it is wireless communication, and may be, for example, PHS (registered trademark), wireless LAN, Bluetooth (registered trademark), or the like.
[0025]
Further, the procedure executed by each of the wireless tag ID reading and transmitting unit 121, the position information receiving unit 122, the position information accumulation control unit 123, the GPS positioning unit 124, and the position information mutual complementing unit 125 illustrated in FIG. The position information measuring terminal device of the present invention is realized by recording the program on a recording medium, reading the program recorded on the recording medium into a computer system, and executing the program. Here, the computer system includes an OS and hardware such as peripheral devices.
[0026]
The “computer system” also includes a homepage providing environment (or a display environment) if a WWW system is used.
Further, the above program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the "transmission medium" for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
Further, the program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.
[0027]
As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiments, and includes a design and the like within a range not departing from the gist of the present invention.
[0028]
【The invention's effect】
As described above, according to the present invention, since the position information group of the wireless tags buried in the vicinity is stored in advance in the storage device, the radio wave of the mobile communication device such as PHS (registered trademark) does not reach. Even if there is no location and the location is blocked from the outside where satellite navigation such as GPS cannot be used, accurate location information can be provided within the range of the stored location information group. Further, since there is no need to constantly communicate with the position information conversion device using the mobile communication device, the effect obtained when the radio wave condition is poor is great.
Furthermore, since it is not necessary to store all the related information of the wireless tag ID and the location information in the terminal, the capacity of the storage device is small, and a large number of wireless tags that need to be embedded in roads or the like for infrastructure construction have been moved. Since it is very inexpensive as compared with a communication device, a wireless tag reader, or the like, infrastructure construction costs can be reduced. That is, only the user who wants to use the terminal needs to purchase and install the position information measuring terminal device including the wireless tag reader and the mobile communication device.
[Brief description of the drawings]
FIG. 1 is a diagram cited for explaining a system configuration of a position information positioning system to which a position information measuring terminal device of the present invention is connected.
FIG. 2 is a block diagram showing the internal configuration of the position information measuring terminal device of the present invention by developing the function;
FIG. 3 is a flowchart cited for explaining the operation of the position information measuring terminal device according to the present invention.
FIG. 4 is a diagram showing an example of a data configuration of a position information group stored in the storage device shown in FIGS. 1 and 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mobile information measuring terminal device, 2 ... Position information conversion device, 3 ... Mobile communication network, 10 ... Wireless tag, 11 ... Wireless tag reader, 12 ... Control device, 13 ... Storage device, 14 ... Mobile communication device, 15 ... GPS Receiver: 121: wireless tag ID reading / transmitting unit; 122: positional information receiving unit; 123: positional information accumulation control unit; 124: GPS positioning unit; 125: positional information mutual complementing unit

Claims (4)

A position information measuring terminal device connected to the position information conversion device via wireless communication, reading an ID from a wireless tag embedded in an arbitrary place in the facility, transmitting the ID to the position information conversion device, and measuring position information. And
A wireless tag ID reading and transmitting unit that reads the ID of the wireless tag and transmits the ID to the position information conversion device via the wireless communication;
A position information receiving unit that receives the position information of the wireless tag transmitted from the position information conversion device via the wireless communication, the ID of the wireless tag embedded within a predetermined distance range of the wireless tag, and the position information thereof When,
The received position information is stored in a storage device, and when the position information corresponding to the read wireless tag is stored in the storage device, the position information is extracted. Via the tag ID reading and transmitting unit, the position information from the position information conversion device via the wireless communication, and the ID of the wireless tag embedded within a predetermined distance range of the wireless tag and the position information to the position information receiving unit. A position information storage control unit that stores the information in the storage device;
A position information measuring terminal device comprising: Used together with a satellite navigation system that receives navigation radio waves from satellites and measures position information, and when the measurement of position information by the satellite navigation system is not normal, complements with the position information of the wireless tag received from the position information conversion device. And when the position information of the wireless tag received from the position information conversion device is not obtained, a position information mutual complementing unit that complements with the position information measured by the satellite navigation system,
The location information measuring terminal device according to claim 1, further comprising: The position information conversion device is connected via wireless communication, reads the ID from a wireless tag embedded in an arbitrary place in the facility, transmits the ID to the position information conversion device, and measures the position information by the wireless tag. A measuring method,
Reading the ID of the wireless tag and transmitting the ID to the position information conversion device via the wireless communication;
A step of receiving the position information of the wireless tag received from the position information conversion device via the wireless communication, and the ID and the position information of the wireless tag embedded in a predetermined distance range of the wireless tag,
The received position information is stored in a storage device, and when the position information corresponding to the read wireless tag is stored in the storage device, the position information is extracted. Capturing the position information from the position information conversion device via communication, and the ID and position information of the wireless tag embedded within a predetermined distance range of the wireless tag, and storing the captured information in the storage device;
A position information measuring method using a wireless tag, comprising: A position information measuring terminal device connected to the position information conversion device via wireless communication, reading an ID from a wireless tag embedded in an arbitrary place in the facility, transmitting the ID to the position information conversion device, and measuring position information. A program used for
Reading an ID of the wireless tag and transmitting the ID to the position information conversion device via the wireless communication;
Receiving the position information of the wireless tag received from the position information conversion device via the wireless communication, and the ID and the position information of the wireless tag embedded in a predetermined distance range of the wireless tag,
The received position information is stored in a storage device, and when the position information corresponding to the read wireless tag is stored in the storage device, the position information is extracted. Capturing the position information from the position information conversion device via communication, and the ID and the position information of the wireless tag embedded within a predetermined distance range of the wireless tag, and storing the information in the storage device;
Information measurement terminal program that causes a computer to execute the program.

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