JP2004028642A - Position detection display method and position detection communication system and program of group detection object radio terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect quickly and surely the position (the relative position or the absolute position) of a plurality of radio terminals regarded as one group. <P>SOLUTION: Information of each relative position of a plurality of position detection portable terminals 1 (hereafter, described as radio terminals A-C) which is a detection object as a group is acquired and displayed. First of all, the radio terminal A transmits by radio information including a self-radio terminal ID. The radio terminals B, C receiving the radio transmission transmit by radio information including a self-radio terminal ID to the radio terminal A. The radio terminal A receiving the radio transmission performs screen display of relative position information between the radio terminal ID of the radio terminals B, C and the self-radio terminal ID together with a map read out from a storage device 16 on a liquid crystal display (LCD) 16. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a position detection display method, a position detection communication system, and a program for detecting an absolute position and a relative position of a moving object, a portable item, or the like of a group and displaying the detected position on a screen or a synthesized voice.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as an example of a position detection communication system that detects a current moving position of a moving object (for example, a vehicle or a person) of this type, a global positioning system (GPS) is adopted (for example, a car navigation system). , Portable GPS receivers) are known.
[0003]
A device employing this GPS receives GPS radio waves from at least three (or four) GPS satellites flying in the sky, and obtains absolute position information (two-dimensional information of latitude and longitude) of the receiving point from a difference in arrival time. Or three-dimensional information of latitude, longitude and altitude).
[0004]
By the way, since the GPS radio wave has a high use frequency band and is a linear characteristic in the radio wave propagation or the reception of a weak reception electric field strength (the reception signal level is low), particularly, indoors such as in underground facilities, etc. (Reception), it is difficult to apply it to a position detecting device.
[0005]
For this reason, a position detection communication system has been proposed in which a weak radio wave or infrared transmitter is mounted on a GPS receiver to acquire absolute position information of a mobile object (in particular, a person) or a portable article indoors (for example, Japanese Patent Application Laid-Open No. H11-163873). 2000-11648 "Position detecting system and position detecting device").
[0006]
FIG. 18 is a block diagram showing a configuration example of such a conventional position detection communication system.
[0007]
Referring to FIG. 18, for example, in a portable wireless terminal for this position detection, when the GPS receiver 101 is outdoors, the GPS radio wave transmitted by each of at least three (or four) GPS satellites in the sky is transmitted to an antenna GPS Ant. And outputs the GPS reception signal to the position calculation unit 103.
[0008]
The position calculation unit 103 to which the GPS reception signal is input performs the position calculation and the moving velocity direction calculation from each processing of the spectrum despreading, the distance measurement, the Doppler measurement, and the orbit data for the GPS reception signal, and performs the current absolute position, that is, , And outputs two-dimensional information of latitude and longitude (or three-dimensional information of latitude, longitude and altitude).
[0009]
Further, the position calculation unit 103 selects the outdoor map information read from the map information storage unit 104 to read the absolute position information, and displays the current position on the map as well as moving the screen on the display unit 105.
[0010]
On the other hand, indoors (inside the facility), the infrared position ID receiving unit 102 receives infrared rays including an identification code (ID) indicating the position from a position ID transmitter (not shown) installed at various places in the facility. The infrared signal (position ID information) is output to the position calculation unit 103.
[0011]
Upon receiving the position ID information, the position calculating unit 103 selects indoor map information from the map information storage unit 104 based on the position-related information included in the position ID information, and displays the current position on the map. (Calculation). The display information (current position) is displayed on the screen of the display unit 105 on a map.
[0012]
As described above, even with the conventional position detection communication system, the current position of the position detection portable wireless terminal outdoors and indoors is determined.
[0013]
[Problems to be solved by the invention]
However, the above conventional example has the following problem.
(1) In the conventional example, although the absolute position of each of the plurality of position detecting portable wireless terminals is determined, a part or all of the plurality of position detecting portable wireless terminals is regarded as one group for position detection (grouping and Notation) is not possible.
[0014]
(2) In the conventional example, although the absolute position of each of the position detection portable wireless terminals, either indoors or outdoors, can be determined, grouping over indoors and outdoors cannot be performed.
[0015]
The present invention has been made in view of the above circumstances, and enables position detection (grouping) in which some or all of a plurality of wireless terminals are regarded as one group. It is an object of the present invention to provide a method for detecting and displaying a position of a wireless terminal to be detected by a group, a position detecting communication system, and a program, which can quickly and surely detect a relative position and an absolute position of a detection target of a mobile terminal or a portable item.
[0016]
In addition, the present invention enables grouping over indoors and outdoors, and enables quick and reliable detection of the relative position and absolute position of a detection target such as a person or a portable object over a wide range by grouping. It is an object of the present invention to provide a method for detecting and displaying a position of a group detection target wireless terminal, a position detecting communication system, and a program.
[0017]
[Means for Solving the Problems]
A method for detecting and displaying the position of a group detection target wireless terminal of the present invention that achieves the above object obtains and displays information on the relative position of each of a plurality of wireless terminals that are detection targets as a group. A step in which one of the wireless terminals of the terminal wirelessly transmits information including its own wireless terminal identification code (ID); and a step in which the other wireless terminal of the plurality of wireless terminals receiving the wireless transmission transmits its own wireless terminal ID. Wirelessly transmitting the information including the wireless terminal, and the wireless terminal on one side having received the wireless transmission has a step of displaying relative position information between the wireless terminal ID of the other wireless terminal and the own wireless terminal ID. Features.
[0018]
Further, the position detection and display method of the group detection target wireless terminal of the present invention is to acquire and display information on the absolute position of each of a plurality of wireless terminals to be detected as a group, The step of measuring the absolute position of each of the wireless terminals on the side and the other side, the step of wirelessly transmitting the absolute position obtained by this measurement to each of the wireless terminals on the one and other sides, and receiving the wireless transmission The wireless terminal on one side displays absolute position information including the absolute position of the wireless terminal on the other side and the absolute position of the own wireless terminal.
[0019]
Further, the position detection and display method of a group detection target wireless terminal of the present invention obtains and displays information on the relative position and the absolute position of each of a plurality of wireless terminals to be detected as a group, and displays the information. A step in which each of the wireless terminals on one side and the other side of the terminal measures an absolute position; a step in which one wireless terminal wirelessly transmits information on its own wireless terminal ID and the absolute position of its own wireless terminal; A step in which the other wireless terminal that has received the transmission wirelessly transmits information on the own wireless terminal ID and the absolute position of the own wireless terminal, and the one wireless terminal that has received the wireless transmission is the other wireless terminal And displaying the relative position and absolute position information including the wireless terminal ID and the absolute position, and the own wireless terminal ID and the absolute position.
[0020]
According to the above-described method of the present invention, it is possible to perform position detection (grouping) in which some or all of a plurality of wireless terminals are regarded as one group. As a result, the position of the absolute position and the relative position of the detection target, for example, a person or a portable item, can be quickly and reliably detected by this grouping.
[0021]
Further, according to the present invention, since the relative position information and the absolute position information are integrally obtained, the grouping can be performed over an indoor area and an outdoor area. The position detection of the absolute position and the relative position can be quickly and reliably performed over a wide range.
[0022]
The position detection communication system of the present invention that achieves the above object obtains and displays information on the relative position of each of a plurality of wireless terminals including one side and the other side that are detection targets as a group. The wireless terminal displays the relative position information including the information including the wireless terminal ID and the reception time of the other wireless terminal and the information including the own wireless terminal ID and the reception time, together with the map, and displays the other wireless terminal. The terminal is characterized in that it displays relative position information including information including the wireless terminal ID and the reception time of the received wireless terminal on one side and information including the own wireless terminal ID and the reception time together with the map.
[0023]
Further, the position detection communication system of the present invention acquires and displays information on the absolute position of each of a plurality of wireless terminals including one side and the other side which are detection targets as a group, and one of the wireless terminals Measuring the absolute position of the own wireless terminal, and wirelessly receiving the absolute position from the wireless terminal on the other side and information including the measurement time of the absolute position, and determining the absolute position and the measurement time of the wireless terminal on the other side. , And the absolute position information including the absolute position of the own wireless terminal and the information including the measurement time are displayed together with the map, and the other wireless terminal displays the absolute position of one wireless terminal and the absolute position of the absolute position. The information including the measurement time is wirelessly received, and the information including the absolute position of the wireless terminal on one side and the measurement time, and the absolute position of the measured own wireless terminal and the absolute position information including the information including the measurement time are obtained. Map and It is characterized in that the display also.
[0024]
Further, the position detection communication system of the present invention obtains and displays information on the absolute position and relative position of each of a plurality of wireless terminals including one side and the other side which are detection targets as a group. The wireless terminal measures the absolute position of the own wireless terminal, and wirelessly receives information including the measurement time of the other wireless terminal, the wireless terminal ID and the absolute position, and includes the reception time of the other wireless terminal. Information and the wireless terminal ID and the absolute position, and the information including the measurement time of the absolute position at the own wireless terminal, the own wireless terminal ID and the absolute position, the relative position information and the absolute position information are displayed together with the map, and The other wireless terminal receives the information including the measurement time of the one wireless terminal and the wireless terminal ID and the absolute position, and the information including the measurement time, the own wireless terminal ID, and the absolute value of the own wireless terminal. Relative position information consisting of the position and absolute position information is characterized by displaying together with the map.
[0025]
According to the above-described position detection communication system of the present invention, the same operation and effect as those of the above-described method can be obtained.
[0026]
The program of the present invention that achieves the above object is configured such that one side of the wireless terminal receives the relative information including the wireless terminal ID of the other wireless terminal and the reception time, and the information including the own wireless terminal ID and the reception time. A process of displaying the position information together with the map, and the other wireless terminal receives the wireless terminal ID of the one wireless terminal and information including the reception time, and relative position information including information including the own wireless terminal ID and the reception time. Is displayed on a map together with a map.
[0027]
Further, the program of the present invention includes a process in which one wireless terminal measures the absolute position of its own wireless terminal, a process of wirelessly receiving information including the absolute position and the measurement time from the other wireless terminal, Displaying the absolute position information of the information including the absolute position and the measurement time of the wireless terminal, and the absolute position information of the information including the absolute position and the measurement time of the own wireless terminal together with the map; The process includes wirelessly receiving information including the absolute position and the measurement time of the wireless terminal, information including the absolute position and the measurement time of one wireless terminal, and information including the absolute position and the measurement time of the measured own wireless terminal. This is for causing a computer to execute control of processing for displaying absolute position information together with a map.
[0028]
Further, the program according to the present invention includes a process in which one wireless terminal measures the absolute position of its own wireless terminal, a process in which information including a reception time of the other wireless terminal, a wireless terminal ID and an absolute position are wirelessly received. Information including the reception time of the other wireless terminal, the wireless terminal ID and the absolute position, and information including the measurement time of the absolute position of the own wireless terminal, the relative position information including the own wireless terminal ID and the absolute position, and the absolute position information. The process of displaying the position information together with the map, the other wireless terminal receiving the information including the measurement time of the one wireless terminal and the wireless terminal ID and the absolute position, and the information including the reception time and the own wireless terminal ID And a process of displaying the relative position information including the measured absolute position of the wireless terminal and the absolute position information together with the map.
[0029]
According to the above-described program of the present invention, the present invention can be provided as an information recording medium, for example, package software, and the processing of the present invention can be executed by an apparatus equipped with an MPU or the like. The performance is improved.
[0030]
The following is a preferred embodiment in the technical idea of the above-described method of detecting and displaying the position of the group detection target wireless terminal.
[0031]
The wireless terminal on the other side further includes a step of displaying relative position information including a wireless terminal ID of the wireless terminal on one side and a wireless terminal ID of the wireless terminal on the other side.
[0032]
Further, the other-side wireless terminal receives (a) only the absolute position of the one-side wireless terminal, or the absolute position information and the wireless terminal ID, and (b) only the absolute position information of the own wireless terminal, or And (b) displaying the absolute position information including the absolute position information of the own wireless terminal and the own wireless terminal ID.
[0033]
In addition, the one and the other wireless terminals transmit their own wireless terminal IDs at regular intervals.
[0034]
Further, the one and other wireless terminals transmit the absolute positions measured at regular intervals.
[0035]
The one and other wireless terminals add information including the reception time of the wireless terminal ID to the own wireless terminal ID, transmit the information, and display the reception time in addition to the relative position information.
[0036]
Further, the wireless terminals on one side and the other side add information including the measurement time of the absolute position and transmit the information, and display the measurement time in addition to the absolute position information.
[0037]
Further, the one-side and the other-side wireless terminals store relative position information, and when acquiring the next relative position, the one-side wireless terminal ID or the other-side wireless terminal ID corresponding to the relative position is stored. The method further includes a step of determining whether or not the information is present in the relative position information and displaying the information.
[0038]
Further, the one-side and the other-side wireless terminals store absolute position information, and when acquiring the next absolute position, the one-side wireless terminal ID or the other-side wireless terminal ID corresponding to the absolute position is stored. The method further includes a step of determining whether or not the absolute position information is present in the absolute position information and displaying the determined absolute position information.
[0039]
Further, the wireless terminals on one side and the other side perform transmission using an omnidirectional antenna.
[0040]
Further, the display is one or both of a screen display and a synthesized voice display.
[0041]
At the time of the above display, a map is displayed.
[0042]
Further, one or both of the one and the other radio terminals receive radio reception with an antenna having directional characteristics, and determine and display the direction of the transmission side from the reception signal level corresponding to the electric field strength in this reception. The method further includes the step of:
[0043]
Further, at the time of wireless reception of one or both of the one-side wireless terminal and the other-side wireless terminal, a distance between the one-side wireless terminal and the other-side wireless terminal is calculated from a reception signal level corresponding to a reception electric field strength. The method further includes a step of acquiring the information.
[0044]
Further, information indicating a detection target group that has performed position detection of a plurality of wireless terminals is added together with the wireless terminal ID.
[0045]
Further, the wireless terminals on one side and the other side measure the absolute position of two-dimensional information composed of latitude and longitude or three-dimensional information composed of latitude, longitude and altitude when measuring their respective absolute positions.
[0046]
In addition, the map is map information stored in advance in the wireless terminal, or map information obtained from the map information provided by the map database device on the communication network by the wireless terminal through communication means provided in the wireless terminal. Information.
[0047]
Further, the following is a preferred embodiment in the technical idea of the position detection communication system described above.
[0048]
The map is map information stored in the wireless terminal in advance, or map information provided by a map database device on a communication network, the map information being captured by the wireless terminal through communication means provided in the wireless terminal. is there.
[0049]
In the above-mentioned wireless terminal, the communication means for performing wireless communication is an internal or externally connected communication means.
[0050]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a method for detecting and displaying a position of a group detection target wireless terminal, a position detection communication system, and a program according to the present invention will be described with reference to the drawings. In the present embodiment, the configuration and the arrangement are merely schematically shown to the extent that the present invention can be understood. Hereinafter, a preferred configuration example of the present invention will be described, but each configuration, signal processing and transmission method, numerical conditions, and the like are merely preferred examples. Therefore, the present invention is not limited to the following embodiments, but is applicable to various forms based on the description of the present invention including the claims.
[0051]
Further, in each of the following embodiments, the same or similar reference numerals are given to the common components, and the same components are not described again.
[0052]
Furthermore, in the following description, the notation of “relative position and absolute position” of the present invention including the claims is referred to as “relative position information and absolute position information”, and the present invention including the claims is also described. Is described as "relative position information list and absolute position information list" in the following description.
[0053]
(Configuration of First Embodiment and Operation of Each Unit)
FIG. 1 is a block diagram schematically showing the entire configuration of the first embodiment of the present invention.
[0054]
Referring to FIG. 1, in the position detecting portable wireless terminal 1 of the first embodiment, each of a plurality of portable terminals is carried by a person who is active in a certain area, and the presence state of the person in the area ( It is used for grasping the position of a person or a person who has been lost or stolen.
[0055]
This position detecting portable wireless terminal 1 (corresponding to the “one and other wireless terminals” of the present invention including the claims) receives at least three (or four) GPS satellites SS flying in the sky. Antenna Ant1 for receiving GPS radio waves, GPS receiving unit 10, wireless transmitting / receiving unit 12, (corresponding to "communication means" of the present invention including the claims), antenna Ant2, control unit 14, storage device 16, a liquid crystal display (LCD) 18, a keypad 20, and a reception electric field intensity detection unit 21 are connected to a bus line Bus for control, address, and data transfer.
[0056]
The wireless transmission / reception unit 12 of the position detection portable wireless terminal 1 performs the same operation as a PHS (Personal Handyphone System) type portable telephone capable of performing mutual communication (so-called transceiver function) and connecting to a public communication network. Do.
[0057]
The operation of the PHS mobile phone is known, and a detailed description is omitted. For example, an operation is performed as a cellular PHS system of the ARIB-28 standard (TDMA / TDD transmission system). In this operation, in addition to the mutual communication (transceiver) function, it is possible to capture map information through a digital public network as shown in FIG.
[0058]
Note that the configuration of various communication devices that operate as a transceiver can be applied to the wireless transmission / reception unit 12 of the position detection portable wireless terminal 1. When performing grouping in a relatively wide range (for example, grouping when a specific manager wants to obtain location information (existence status) including entry and exit in this area of a business person who operates in a certain outdoor area) Requires relatively large transmission power, and grouping in a narrow range (for example, grouping for acquiring position information when a portable item is lost or stolen in a building) includes, for example, a weak radio frequency A configuration based on a hopping method (Bluetooth) is also possible.
[0059]
Next, the antenna Ant1 in FIG. 1 receives the GPS radio waves Wa, Wb, Wc, and Wd from the GPS satellite SS by the planar receiving element, and transmits the received signal to the GPS receiving unit 10.
[0060]
The GPS radio waves Wa to Wd receive at least three waves when acquiring only two-dimensional information (latitude and longitude), and at least four waves when acquiring only three-dimensional information (latitude, longitude and altitude). Receive the waves.
[0061]
The GPS receiving unit 10 performs position calculation and moving speed direction calculation based on spectrum despreading, distance measurement, Doppler measurement, and orbit data processing for the GPS reception signal from the antenna Ant1, and calculates the absolute position of the current reception point (two-dimensional information or 3D information).
[0062]
The wireless transmission / reception unit 12 performs communication (transceiver communication) for performing grouping with the other position detection portable wireless terminals 1 (at least two devices). This communication is transmitted with power that allows communication depending on the geographical range of the grouping. Further, as described below, when the direction (relative position) of the other position detecting portable terminal 1 is measured with the directivity of the antenna Ant2, the directional characteristics can be easily obtained and the multiplex radio wave propagation (multi The frequency band is selected in consideration of the measurement failure due to the path).
[0063]
The control unit 14 performs control (control on the GPS receiving unit 10, the wireless transmitting / receiving unit 12, the storage device 16, and the received electric field intensity detecting unit 21) according to the first embodiment described in detail below.
[0064]
The storage device 16 stores an identification code (ID) assigned to the position detection portable wireless terminal (hereinafter, appropriately referred to as own wireless terminal) 1, and further stores the detected relative position information and absolute position information. The indoor and outdoor map information for detecting the relative position information and the absolute position information (corresponding to the "map information stored in the wireless terminal" of the present invention including the claims) is stored in advance.
[0065]
A liquid crystal display (LCD) 18 displays indoor and outdoor map information, relative position information and absolute position information by grouping, and processing data related to control of the control unit 14 on a screen.
[0066]
The keypad 20 switches various settings. For example, the control section 14 outputs a grouping start instruction and an instruction input signal for switching the antenna Ant2 (see FIG. 4) in omnidirectional reception or directional reception.
[0067]
The reception electric field strength detection section 21 outputs a signal of the reception electric field strength for calculating an approximate distance from another position detection portable wireless terminal 1 based on a reception signal level from the wireless transmission / reception section 12 (claims). Corresponding to “calculate and obtain the distance to the wireless terminal on one side or the other side” of the present invention including the range of (1).
[0068]
FIG. 2 is a block diagram showing a detailed configuration example of the control unit 14 in FIG.
[0069]
Referring to FIG. 2, the control unit 14 includes an MPU (Microprocessing Unit) 30, an input / output (I / O) circuit 31, a memory 33, an I / O circuit 34, a timer circuit 35, a data I / O And an O circuit 36.
[0070]
The MPU 30 controls the processing in the control unit 14.
[0071]
The MPU 30 includes a CPU, a ROM, and a working RAM. The ROM has a program for executing the processing of the first embodiment (corresponding to the program of the present invention including the claims). ) Is stored, and this program is executed by the CPU through working processing of the RAM.
[0072]
The input / output (I / O) circuit 31 performs control with the bus line Bus in the position detecting portable wireless terminal 1 shown in FIG. 1 and input / output of addresses and data.
[0073]
The memory 33 stores an identification code for each of the position detecting portable wireless terminals 1 (ID, and an identification code for each of the position detecting portable wireless terminals 1 as appropriate, "wireless terminal ID"), and various types of information in the first embodiment. Processing data (for example, relative position information and absolute position information) is stored.
[0074]
The I / O circuit 34 performs reading of indoor or outdoor map information from the storage device 16 in FIG. 1 and input / output processing for storing or overwriting new map information.
[0075]
The timer circuit 35 counts time and calendar (day, month, etc.) and interrupts the MPU 30 at a preset time. For example, as described in detail below, a certain time (period) is measured, the interruption is performed, and the transmission time of the position detecting portable terminal 1 is output (see “Constant” of the present invention including the claims). Time and reception time ").
[0076]
The I / O circuit 36 performs data input / output processing with the liquid crystal display 18 and the keypad 20 in FIG.
[0077]
FIG. 3 is a block diagram illustrating a functional configuration of the position detection portable wireless terminal 1 according to the first embodiment.
[0078]
Referring to FIG. 3, this functional configuration corresponds to a case where the first embodiment is configured by, for example, a DSP (Digital Signal Processor).
[0079]
In this functional configuration, details such as an antenna are omitted from illustration, and GPS signal reception, absolute position calculation, own terminal absolute position information holding, data communication, relative position calculation, relative position and other terminal absolute position information holding , And each unit that performs each process of display.
[0080]
In the process of receiving a GPS signal, a GPS radio wave (see FIG. 1) including position-related information from a GPS satellite (see FIG. 1) is received, and the GPS reception signal is sent to the process for calculating an absolute position.
[0081]
In the process of calculating the absolute position, the current position is calculated from the position information of the GPS reception signal and the map information stored in the map information. In addition, the calculated current position is transmitted to display and own terminal absolute position information holding.
[0082]
In the own terminal absolute position information holding process, the current position from the absolute position calculation is held together with the time data from the not shown time counting process, and this absolute position information is sent to the data communication process.
[0083]
In the relative position calculation process, relative position information is generated (calculated) based on information from the data communication, and this information is transmitted to display, relative position information, and holding of other terminal absolute position information.
[0084]
In the process of holding the relative position information and the absolute position information of the other terminal, the information in the process of calculating the relative position is held together with the time data, and this data is sent to the display process.
[0085]
In the process of storing map information, outdoor and indoor map information is sent out for display together with relative position information and absolute position information and for position calculation.
[0086]
In the display process, a map is displayed together with the absolute position information and the relative position information.
[0087]
In the data communication processing, the transmission data from the position detecting portable wireless terminal 1 not shown is received by an antenna not shown (see FIG. 1), and the own terminal absolute position information holding, relative position calculation, relative position and other terminal absolute The processing data for holding the position information is transmitted to another position detecting portable wireless terminal 1 (not shown) through an antenna (see FIG. 1).
[0088]
FIG. 4 is a perspective view showing a specific configuration example of the antenna Ant2 in the position detection portable wireless terminal 1.
[0089]
Referring to FIG. 4, the antenna Ant2 includes two types of antennas. As a specific configuration example, the position detection portable wireless terminal 1 can communicate with another position detection portable wireless terminal by using the omnidirectional antenna 60 (“Omnidirectional antenna of the present invention including the claims”). ), The antenna 61 disposed on the printed circuit board PC in order for the position detecting portable wireless terminal 1 to measure the direction of another position detecting portable wireless terminal from its antenna directivity. (Corresponding to the “antenna having directional characteristics” of the present invention including the range).
[0090]
Further, in the configuration example of FIG. 4, a switch 62 that is connected to a feeder line of the antennas 60 and 61 and performs selection switching of the antennas 60 and 61 according to an instruction from the keypad 20 is provided. A reflector T for forming antenna directivity is arranged behind the antenna element (below the figure).
[0091]
The omnidirectional antenna 60 has omnidirectional radiation characteristics as a so-called whip antenna.
[0092]
In this example, the antenna 61 is a dipole antenna, and the radiation directivity characteristic Bp is formed by the function of the reflector T, and the direction of the maximum reception sensitivity Bs is the direction in which the other position detection portable wireless terminal 1 exists. is there.
[0093]
The configuration shown in FIGS. 1 to 4 is an example in which the appearance is the same as that of, for example, a mobile phone. However, when the detection target is, for example, a countermeasure against loss or theft of a wristwatch, a wallet, or the like. Therefore, it is required to reduce the size of the wristwatch or wallet. In this case, for example, only the omnidirectional antenna 60 shown in FIG. 4 is particularly miniaturized and arranged, and the antenna 61 having directional characteristics is not arranged. In this case, the following directions will not be measured.
[0094]
In addition, regardless of the configuration using the dipole antenna and the reflector T, the antenna 61 having directivity may be any antenna that can obtain directivity and can be easily mounted on the position detecting portable wireless terminal 1. A type antenna may be used. For example, a circular polarization helical may be used. Further, in this configuration example, the antenna 61 having directivity built in the position detection portable wireless terminal 1 is used. However, a detachable external antenna configuration may be adopted. The antenna may have a directivity fixed to the housing.
[0095]
(Overall operation of the first embodiment)
FIG. 5 is a sequence diagram showing the overall operation of the first embodiment.
[0096]
Referring to FIG. 5, this sequence is an example in which three position detecting portable wireless terminals 1 (here, three position detecting portable wireless terminals 1 are grouped. Are appropriately described as wireless terminals A, B, and C (corresponding to “one-side and other-side wireless terminals” of the present invention including the claims).
[0097]
Here, the wireless terminal A is, for example, for a sales manager who is active in a certain outdoor area, and the wireless terminals B, C are described for a salesperson. The manager and the salesperson in the certain area are regarded as a group, and the position information (relative position information and absolute position information of the existence status, the direction) including the entrance and exit in the certain area is detected by each of the wireless terminals A to C ( Grouping).
[0098]
Further, in the detection (grouping) of relative position information, absolute position information, and orientation in a small area, for example, in the case of loss or theft of a portable device in a building, the wireless terminal A is used for an administrator, and two portable devices are used. The wireless terminals B and C are mounted on the wireless terminal, and the wireless terminals B and C are detection targets. When the terminal is lost or stolen, the wireless terminal A detects the wireless terminals B and C, and the manager finds the portable item from the relative position information, the absolute position information, and the direction.
[0099]
Referring to FIGS. 3 and 5, in the relative position calculation process, information such as the identification code (wireless terminal ID) of the own wireless terminal A is transmitted (broadcast) from the data communication process. The wireless terminals B and C that have received the information such as the wireless terminal ID by the data communication processing hold the received data by the relative position processing and the other terminal absolute position information holding processing.
[0100]
Each of the wireless terminals B and C simultaneously broadcasts (broadcasts) the wireless terminal ID, and the wireless terminal A receives it. The wireless terminal A holds the received data (see the relative position information list in FIG. 9). From this relative position information, the relative position relationship between the own wireless terminal A and the wireless terminals B and C is determined.
[0101]
Next, when the GPS reception signal can be received outdoors or the like, the map information in the map information storage processing is acquired by the position calculation processing based on the position-related information included in the GPS reception signal, and the current position (absolute position information) is obtained. ) Is calculated. This absolute position information is displayed on the screen in the display processing.
[0102]
The absolute position information is held together with the time data in the own terminal absolute position information holding processing (see the absolute position information list in FIG. 10). The absolute position information and the time data are transmitted from the own wireless terminal A to surrounding wireless terminals B and C together with the own wireless terminal ID and the like through data communication processing.
[0103]
The wireless terminals B and C hold the absolute position information and time data received in the data communication processing, the own wireless terminal ID of the wireless terminal A, and the like in the relative position processing and the other terminal absolute position information holding processing (FIG. 11). (Refer to the relative position information and the absolute position information list) and display on the screen by the display processing.
[0104]
As a result, in the own radio terminals A to C, the absolute positions of the other radio terminals located in the respective surroundings are determined.
[0105]
Also, for example, the approximate distance between the own wireless terminal A and the wireless terminals B and C can be estimated from the received electric field strength when the wireless terminals A to C have the same transmission power.
[0106]
By continuously performing the relative position detection and the absolute position detection processing, even if the absolute positions of the wireless terminals A to C change (for example, the wireless terminals A to C are positioned and move in the vehicle). If the relative positions of the wireless terminals A to C do not change, the wireless terminals A to C can be recognized (grouped) as one group.
[0107]
FIG. 6 is a flowchart showing a processing procedure in the operation of the first embodiment, and FIG. 7 is a flowchart showing a processing procedure of a subroutine in FIG.
[0108]
The processing procedure shown in FIG. 6 is a processing procedure corresponding to the program execution in the control unit 14 shown in FIG.
[0109]
FIG. 8 is a diagram for explaining the positions of the wireless terminals A to C and their service areas, FIG. 9 is a diagram showing a relative position information list, and FIG. 10 is a diagram showing an absolute position information list. It is. FIG. 11 is a diagram showing the relative position information and the absolute position information list.
[0110]
Hereinafter, description will be made with reference to the configuration of FIGS.
[0111]
First, the acquisition of the relative position information list shown in FIG. 9 will be described.
[0112]
Wireless terminal A is set so that control unit 14 operates as a grouping mode and a transceiver in response to an instruction input from keypad 20 (step S1 in FIG. 6 (hereinafter, notation of FIG. 6 is omitted)). Further, it is set to acquire relative position information or absolute position information (step S2).
[0113]
Next, the wireless terminal A reads the own wireless terminal ID stored in the storage device 16 in advance under the control of the control unit 14 (step S3), and further, the wireless terminal A performs the grouping with the wireless terminals B and C. (Referred to as a grouping ID as appropriate) is read out (step S4).
[0114]
Next, the wireless terminal A transmits (broadcasts) the grouping ID together with its own wireless terminal ID from the wireless transmitting / receiving unit 12 and the antenna Ant2 (step S5). In the simultaneous transmission in this case, the switch 62 selects the omni-directional antenna 60 shown in FIG. 4 under the control of the control unit 14, and as shown in FIG. You. In this case, the wireless terminal A is used while being held vertically.
[0115]
Upon receiving the wireless terminal ID and the grouping ID from the wireless terminal A (step S6), the wireless terminals B and C output the received data to the storage device 16 via the antenna Ant2, the wireless transmission / reception unit 12, and the control unit 14. Then, it is stored here (step S7).
[0116]
Next, the wireless terminals B and C that have received the grouping ID read out their own wireless terminal IDs from the storage device 16 under the control of the control unit 14 (step S8), and simultaneously broadcast (broadcast) through the wireless transmission / reception unit 12 and the antenna Ant2. (Step S9).
[0117]
Only the wireless terminal A receives the wireless terminal IDs from the wireless terminals B and C via the antenna Ant2 and the wireless transmitting / receiving unit 12 (step S10), and the wireless terminal A controls the received wireless terminal IDs from the wireless terminals B and C. The data is output to the storage device 16 under the control of the unit 14, and is stored here (step S11).
[0118]
As shown in the relative position information list of FIG. 9, the data stored in the storage device 16 is associated with the time “17:20:00 seconds on March 14, xxx,...” And the wireless terminal ID “0000 0001…”. Is remembered. In this storage, the current time from the timer circuit 35 shown in FIG. 2 is added every time the MPU 30 takes in the GPS reception signal from the GPS reception unit 10.
[0119]
The relative position information list of FIG. 9 is displayed on the screen of the liquid crystal display 18 of the own wireless terminal A. Further, on the liquid crystal display 18 of the own wireless terminal A, the control unit 14 reads the indoor or outdoor map information stored in advance in the storage device 16 (step S12), and displays it on the screen together with the relative position information (step S13). Thus, the wireless terminals B and C having a relative positional relationship with the own wireless terminal A are determined.
[0120]
Next, acquisition of the absolute position information list shown in FIG. 10 will be described.
[0121]
When the wireless terminal A is set to acquire the relative position information in step S2, the control unit 14 fetches the GPS reception signal from the GPS reception unit 10 with this setting (steps S20 and S21), and further, the control unit 14 performs a position calculation and a moving speed azimuth calculation process from the spectrum despreading, the distance measurement, the Doppler measurement, and the trajectory data processing (step S22), and outputs this current absolute position information to the storage device 16, and FIG. The current time from the timer circuit 35 is added and stored every time the MPU 30 takes in the GPS reception signal from the GPS receiver 10 (steps S23 and S24).
[0122]
The absolute position information measured in this manner is transmitted and received between each of the wireless terminals A to C according to the sequence shown in FIG. 5 (this routine is not shown in FIG. 7).
[0123]
As shown in FIG. 10, the absolute position information list stored in the storage device 16 of each of the wireless terminals A to C includes the time “17:21:00 on March 14, xxx ...” and the latitude data “35 / 41 / 12.340 ... "and longitude data" 139/42 / 47.916 ... "are stored correspondingly.
[0124]
Since the time in the absolute position information list is performed after the relative position information list shown in FIG. 9 is obtained, the time is sequentially later than the time when the relative position information is obtained.
[0125]
The control unit 14 of each of the wireless terminals A to C reads the indoor or outdoor map information stored in advance in the storage device 16 in the absolute position information list in FIG. It is displayed (step S26). As a result, the absolute positions of the wireless terminals A to C in the grouping are determined.
[0126]
Note that the wireless terminal ID is not stored in the absolute position information list in this case. That is, the absolute positions of the wireless terminals A to C are not known. The wireless terminal ID for each absolute position information is stored in a relative position information and absolute position information list described below.
[0127]
Next, the relative position information and the absolute position information list are obtained.
[0128]
The instruction to start acquiring the relative position information and the absolute position information list may be either input from the keypad 20 or automatically set in the control unit 14 in advance.
[0129]
After the start of the acquisition of the relative position information and the absolute position information list (step S30), the absolute position information and the time data stored in the storage device 16 are read out under the control of the control unit 14 (step S31), and wireless transmission and reception are performed. Simultaneous transmission is performed from the unit 12 and the antenna Ant2 to the wireless terminals B and C (step S32).
[0130]
The wireless terminals B and C receive the absolute position information and the time data from the wireless terminal A via the antenna Ant2 and the wireless transmitting and receiving unit 12 (step S33), and receive the absolute position information and the time data and the wireless terminal A's wireless terminal ID. Are stored in the storage device 16 in association with the relative position information stored in advance. In other words, it is stored in association with the wireless terminal ID (step S34).
[0131]
As shown in FIG. 11, the absolute position information stored in the storage device 16 includes the time “17:21:00 on March 14, xxx,...”, The wireless terminal ID “0000 0001…”, and the latitude data “35”. /41/12.340 ... "and longitude data" 139/42 / 47.916 ... "are stored correspondingly. The time in this storage is the acquisition time of the position information shown in FIG.
[0132]
The wireless terminals B and C also simultaneously transmit the stored absolute position information and time data, and are received by the wireless terminal A. That is, transmission and reception are performed between the wireless terminals A to C according to the sequence shown in FIG. 5 (this routine is not shown in FIG. 7).
[0133]
Then, the control unit 14 reads the indoor or outdoor map stored in the storage device 16 in advance (step S35), and the relative position information and the absolute position information list shown in FIG. The screen is displayed (step S36).
[0134]
Note that the corresponding wireless terminal ID may be displayed on the screen on the latitude and longitude on this map.
[0135]
As a result, the wireless terminals B and C having the relative position and the absolute position with the own wireless terminal A are determined.
[0136]
Note that the position display on the map here is processed by a V-ROM or the like not shown in FIG. 2, but this processing is processing for displaying the position of the moving object on the map on a map by a car navigation device or the like. And its detailed description is omitted.
[0137]
In addition, since the data amount of the map information is large, only the character data shown in FIGS. 9 to 11 may be displayed on the screen without displaying the map.
[0138]
Next, a process of measuring the azimuth of the wireless terminals B and C in the relative position information will be described.
[0139]
In the azimuth measurement process, for example, the approximate distance between the own wireless terminal A and the wireless terminals B and C is determined from the received electric field strength when the transmission power is the same for all the wireless terminals A to C. The reception electric field strength is obtained by measuring the reception electric field intensity (reception signal level) / distance actually measured using the antenna Ant2 and the reception electric field intensity meter in advance and storing the measured value in the storage device 16.
[0140]
More specifically, in the case of the azimuth measurement processing (step S40), the reception signal level at the time of communication between the wireless terminals A to C is detected by the reception electric field strength detection unit 21 shown in FIG. 1 (step S41). The control unit 14 that has received the received electric field strength reads out the received electric field strength (received signal level) / distance data stored in the storage device 16 (step S42), and reads the wireless terminals A to A from the received electric field strength in the current communication. The distance data between C is acquired (step S43).
[0141]
The distance data is displayed on the relative position information and the absolute position information list shown in FIGS. 9 to 11 on the screen corresponding to the wireless terminal IDs of the wireless terminals A to C (step S44).
[0142]
By continuously performing the relative position detection and the absolute position detection processing, even if the absolute positions of the wireless terminals A to C change (for example, the wireless terminals A to C are positioned and move in the vehicle). In this case, if the relative positions of the wireless terminals A to C do not change, the wireless terminals A to C can be detected (grouped) as being recognized as one group.
[0143]
(Advantages of the first embodiment)
As described above, according to the first embodiment, the relative positions and the absolute positions of the wireless terminals B and C existing around the own wireless terminal A are determined by the communication between the wireless terminals A to C (note that the wireless terminals A to C communicate with each other). , The relative positions and the absolute positions of the wireless terminals existing around each of the wireless terminals B and C are also determined in the same manner as described above.)
[0144]
Further, since the absolute position and the distance can be obtained, even when the positions of the wireless terminals A to C are displayed on the map, it is easy to grasp the positions.
[0145]
Further, by selecting the relative position information and the absolute position information, for example, the portable terminal such as a wristwatch, a wallet, or the like, is equipped with the wireless terminals A to C (for example, finding the position such as theft), You can also simply check that it is located nearby.
[0146]
(Configuration of Second Embodiment and Operation of Each Unit)
FIG. 12 is a block diagram illustrating a functional configuration of the position detection portable wireless terminal 1 according to the second embodiment.
[0147]
Referring to FIG. 12, as in the first embodiment, this functional configuration corresponds to a case where the functional configuration is, for example, a DSP (Digital Signal Processor). In this functional configuration, a data comparison process corresponding to the second embodiment is provided between the display process of the first embodiment shown in FIG. 3 and the relative position and other terminal absolute position information holding.
[0148]
In the data comparison process, the latest absolute position information from the relative position information and the other terminal absolute position information holding process is compared with the absolute position information that is one time older. If the result of this comparison is different, the result is displayed on the screen by display processing.
[0149]
The configuration using the MPU according to the second embodiment is the same as the configuration shown in FIGS. The processing of the overall operation of the second embodiment described below is executed by the program (corresponding to the program of the present invention including the claims) mounted on the ROM as described above.
[0150]
(Overall operation of the second embodiment)
FIG. 13 is a diagram for explaining relative position information according to the second embodiment.
[0151]
Since the functional operation here is the same as in the first embodiment, only different parts will be described below.
[0152]
12 and 13, the wireless terminal A holds the wireless terminal IDs of the wireless terminals B and C and the acquisition time thereof in the relative position and other wireless terminal absolute position information holding processing. This information is held in the data comparison process, and after a predetermined time, the information in the relative position and other wireless terminal absolute position information holding process changes, and the information shown in FIG. 13, that is, the information of the wireless terminal C of the wireless terminal ID “0000 0030” No relative position information has been obtained.
[0153]
As a result, it is determined that the wireless terminal C is not located within a distance (service area) at which communication with the own wireless terminal A is possible, and this information is displayed on a screen in a display process.
[0154]
In the relative position and other terminal absolute position information holding processing, when the absolute position information list shown in FIG. 3 is held, the absolute position immediately before the wireless terminal A (wireless terminal ID “0000 0030”) leaves is also determined. Also display on the screen.
[0155]
Note that, in the second embodiment, in the configuration examples of FIGS. 1 and 2, the control unit 14 of the wireless terminal A sets the wireless terminal IDs of the wireless terminals B and C and the acquisition time thereof at regular intervals. Investigation is performed, and if there is a change, control is performed to display on the liquid crystal display 18 that the relative position information of the wireless terminal C has not been obtained. The other steps are the same as the processing procedure (flow chart) shown in FIG. 6 in the first embodiment, and the duplicated illustration and description thereof will be omitted.
[0156]
In the second embodiment, only the acquisition of the relative position information list shown in FIG. 13 has been described. However, the acquisition of the absolute position information list shown in FIG. 10 described in the first embodiment, and the relative position information shown in FIG. The information and the absolute position information list can be applied as they are.
[0157]
(Advantages of the second embodiment)
As described above, according to the second embodiment, the relative position information of each device is checked at regular intervals (or constant intervals), and the wireless terminal that has left the grouping can be easily found. In this case, for example, when the wireless terminals A to C are mounted on a wristwatch, a wallet, or the like, it is possible to quickly and surely check for theft, loss, and the like.
[0158]
When the absolute position information is also held, a more specific location that has been stolen or lost can be found by displaying the absolute position information immediately before that on the screen.
[0159]
(Explanation of modified examples)
FIG. 14 is a diagram for explaining measurement of the azimuth (relative position information) of each of the wireless terminals B and C from the wireless terminal A.
[0160]
Referring to FIG. 14, the measurement of this azimuth in the relative position information is performed by the reception electric field strength detection unit 21 to which the reception signal from the radio reception unit 12 shown in FIG. Is rotated in the horizontal direction left and right (in the directions of outlined arrows Ma and Mb) as shown in FIG. Then, the control unit 14 takes in the received signal level and sends it out to the liquid crystal display 18, which displays the received signal level as a numerical value or a bar graph indicating the received signal level. The user of the position detecting portable wireless terminal 1 determines the direction of the maximum received signal level from the contents shown in the figure.
[0161]
When this direction is indicated as an azimuth, the azimuth (for example, north-northeast) is checked by using a azimuth magnet or the like, and is input from the keypad 20 shown in FIG. It is displayed in addition to the relative position information and the absolute position information list shown in FIG.
[0162]
As a result, the more accurate positions of the wireless terminals B and C from the own wireless terminal A by the grouping are determined based on the directions.
[0163]
It should be noted that the more accurate positions of the other wireless terminals from the wireless terminals B and C are also determined based on the directions.
[0164]
FIG. 15 is a block diagram showing a main configuration of a modified example (synthesized voice output) of the position detecting portable wireless terminal 1 shown in FIG.
[0165]
Referring to FIG. 15, in this example, a synthesized voice signal output circuit 70 and a speaker 70a are added to the configuration of FIG.
[0166]
In this example, the relative position information list shown in FIG. 9 to the relative position information list and the absolute position information list shown in FIG. 11 and the relative position information list shown in FIG. Corresponding to the “synthesized voice display” of the present invention including the range of
[0167]
As a result, for example, in an environment such as at night when the screen of the liquid crystal display 18 cannot be seen, the relative position information and the absolute position information can be easily and quickly determined by the synthesized voice.
[0168]
FIG. 16 is a block diagram showing a modification (acquisition of map information from a network) of the configuration of the first and second embodiments.
[0169]
Referring to FIG. 16, in this example, a map database (D / B) device 82 is arranged on a communication network 80. The map D / B device 82 includes a network communication device 82a and a database device 82b. The network communication device 82a transmits the indoor or outdoor map information stored in the database device 82b in advance to the position detecting portable wireless terminal 1 through the installed communication protocol.
[0170]
In this configuration, indoor and outdoor map information stored in the map database device 82 is stored in the storage device 16 in FIG. 1 of the position detecting portable wireless terminal 1 from the communication network 80 and the cell base station 80a to a wireless section (air). (Corresponding to “map information provided from a map database device on a communication network” of the present invention including the claims).
[0171]
It should be noted that the position detection portable wireless terminal 1 needs to have installed therein a utility program and a communication protocol for taking in indoor and outdoor map information from the communication network 80.
[0172]
As a result, even if the position detecting portable wireless terminal 1 does not include the storage device 16 having a relatively large storage capacity, the storage device having a small storage capacity can fetch the latest and necessary indoor and outdoor map information as needed. Become like
[0173]
FIG. 17 is a block diagram showing a further modification (using an external mobile phone) of the configuration of the first and second embodiments.
[0174]
Referring to FIG. 17, the wireless transmission / reception unit 12 in the position detecting portable wireless terminal 1 of FIG. 1 is not provided. An interface (I / F) circuit 90 is connected to the bus line Bus.
[0175]
Further, the I / F circuit 90 includes, for example, a mobile telephone 91 (“externally connected communication” (Corresponding to "means") (not shown).
[0176]
In this configuration, the operation is the same as in the first and second embodiments, but the degree of freedom in the configuration (design) of the position detecting portable wireless terminal 1 is obtained.
[0177]
In the above-described first and second embodiments and the modified examples, the wireless terminals A to C have been described with examples in which the GPS receivers 10 are provided, respectively. Either one may be equipped. In this case, a sequence process is performed in which the absolute position information measured by the GPS receiver 10 is regarded as the absolute positions (latitude, longitude) of all the wireless terminals A to C. Also in this case, although the measurement accuracy of the absolute position is deteriorated, the GPS receiver 10 having a relatively large circuit scale and a large signal processing scale may not be provided, and, for example, the power consumption of the built-in battery is reduced. Also, the degree of freedom of the configuration (design) of the position detecting portable wireless terminal 1 can be obtained.
[0178]
Further, in the first and second embodiments and the modified examples described above, the two-dimensional information of the latitude and the longitude is described as the absolute position information. However, the GPS receiver 10 transmits the GPS radio waves from at least four GPS satellites. , It is possible to acquire altitude information at the positions of the wireless terminals A to C. In this case, the position status of each of the wireless terminals A to C can be determined more accurately.
[0179]
Furthermore, in the above-described first and second embodiments, the grouping has been described by using only one of them. However, it is also possible to detect (group) a large number of position detecting portable wireless terminals 1 into a plurality of sections. In this case, a plurality of wireless terminal IDs are assigned in advance for each position detecting portable wireless terminal 1.
[0180]
Then, grouping is performed to divide a plurality of wireless terminal IDs into a plurality. In this case, a “grouping name (corresponding to“ information indicating a group ”of the present invention including the claims)” is assigned to each grouping, and the grouping is performed. Therefore, one wireless terminal may be grouped over a plurality of groupings.
[0181]
As a result, it is possible to group the sales persons (the holders of the position detection portable wireless terminal 1) operating in a certain area as described above for each different sales item.
[0182]
【The invention's effect】
As is apparent from the above description, according to the present invention, it is possible to perform position detection (grouping) in which a part or all of a plurality of wireless terminals are regarded as one group. It is possible to quickly and reliably detect the absolute position and the relative position of the detection target which is a portable item.
[0183]
Further, according to the present invention, relative position information and absolute position information can be integrally obtained, and grouping can be performed over indoors and outdoors. By this grouping, for example, absolute detection of a detection target such as a person or a portable item is performed. There is an effect that the position of the position and the relative position can be detected quickly and reliably over a wide range.
[Brief description of the drawings]
FIG. 1 is a block diagram schematically showing an overall configuration of a first embodiment of the present invention.
FIG. 2 is a block diagram illustrating a detailed configuration example of a control unit in FIG.
FIG. 3 is a block diagram illustrating a functional configuration of the position detection portable wireless terminal according to the first embodiment.
FIG. 4 is a perspective view showing a specific configuration example of an antenna in the position detection portable wireless terminal of the first embodiment.
FIG. 5 is a sequence diagram showing an overall operation of the first embodiment.
FIG. 6 is a flowchart showing a processing procedure in the operation of the first embodiment.
FIG. 7 is a flowchart showing a processing procedure of a subroutine in FIG. 6;
FIG. 8 is a diagram for explaining a position of a position detecting portable wireless terminal and a service area thereof in the first embodiment.
FIG. 9 is a diagram for explaining relative position information in the first embodiment.
FIG. 10 is a diagram for explaining absolute position information in the first embodiment.
FIG. 11 is a diagram for describing relative position information and absolute position information in the first embodiment.
FIG. 12 is a block diagram illustrating a functional configuration of a position detecting portable wireless terminal according to a second embodiment.
FIG. 13 is a diagram for explaining relative position information in the second embodiment.
FIG. 14 is a diagram for explaining azimuth measurement of another position detecting portable wireless terminal from the position detecting portable wireless terminal in the first and second embodiments.
FIG. 15 is a block diagram showing a main configuration of a modified example (synthesized voice output) of the position detecting portable wireless terminal shown in FIG.
FIG. 16 is a block diagram showing a modification (acquisition of map information from a network) of the configuration of the first and second embodiments.
FIG. 17 is a block diagram showing a modification (using an external mobile phone) of the configuration of the first and second embodiments.
FIG. 18 is a block diagram showing a configuration of a conventional position detection communication system.
[Explanation of symbols]
1 Position detection portable wireless terminal
10 GPS receiver
12 Wireless transceiver
14 Control unit
16 Storage device
18 Liquid Crystal Display (LCD)
21 Received electric field strength detector
30 MPU
35 Timer circuit
60,61 antenna
70 Synthesized voice signal output circuit
82 Map Database (D / B) Device
AC wireless terminal
Ant1, Ant2 Antenna
Bp radiation directivity
Bs reception maximum sensitivity
SS GPS satellite

Claims (9)

A position detection and display method for a group detection target wireless terminal that acquires and displays information on the relative position of each of a plurality of wireless terminals that are detection targets as a group,
A step in which one of the plurality of wireless terminals wirelessly transmits information including an own wireless terminal identification code (ID);
A step of wirelessly transmitting information including the own wireless terminal ID by a wireless terminal on the other side of the plurality of wireless terminals receiving the wireless transmission;
A step in which the one-side wireless terminal receiving the wireless transmission displays relative position information between the wireless terminal ID of the other-side wireless terminal and its own wireless terminal ID;
A method for detecting and displaying the position of a group detection target wireless terminal, comprising: A position detection and display method for a group detection target wireless terminal that acquires and displays information on the absolute position of each of a plurality of wireless terminals that are detection targets as a group,
A step of measuring the absolute position of each of the one and the other wireless terminals in the plurality of wireless terminals,
A step of wirelessly transmitting the absolute position obtained by this measurement to each of the wireless terminals on one side and the other side,
The one-side wireless terminal receiving the wireless transmission, the absolute position of the other-side wireless terminal, and the step of displaying absolute position information consisting of the absolute position of its own wireless terminal,
A method for detecting and displaying the position of a group detection target wireless terminal, comprising: A position detection and display method for a group detection target wireless terminal that acquires and displays information on the relative position and the absolute position of each of a plurality of wireless terminals that are detection targets as a group,
A step of measuring the absolute position of each of the one and the other wireless terminals in the plurality of wireless terminals,
A step in which the one-side wireless terminal wirelessly transmits information on the own wireless terminal ID and the absolute position of the own wireless terminal;
A step in which the other wireless terminal that has received the wireless transmission wirelessly transmits information of the own wireless terminal ID and the absolute position of the own wireless terminal,
A step in which the one-side wireless terminal that has received the wireless transmission displays information on a relative position and an absolute position including the wireless terminal ID and the absolute position of the other-side wireless terminal and the own wireless terminal ID and the absolute position. When,
A method for detecting and displaying the position of a group detection target wireless terminal, comprising: A position detection communication system that obtains and displays information on a relative position of each of a plurality of wireless terminals including one side and the other side that are detection targets as a group,
The one wireless terminal,
Information including the wireless terminal ID and the reception time of the received wireless terminal on the other side and relative position information including information including the own wireless terminal ID and the reception time are displayed together with a map, and
The other wireless terminal,
Information including the wireless terminal ID and the reception time of the received wireless terminal on the one side, and relative position information including information including the own wireless terminal ID and the reception time are displayed together with a map,
A position detection communication system characterized by the above-mentioned. A position detection communication system that obtains and displays information on the absolute position of each of a plurality of wireless terminals including one side and the other side that are detection targets as a group,
The one wireless terminal,
The absolute position of the own wireless terminal is measured, and the absolute position from the other wireless terminal and information including the measurement time of the absolute position are wirelessly received, and the absolute position and the measured time of the other wireless terminal are determined. Information including, and absolute position information consisting of information including the absolute position of the own wireless terminal and the measurement time is displayed together with a map, and
The other wireless terminal,
The absolute position of the one-side wireless terminal and the information including the measurement time of the absolute position are wirelessly received, the information including the absolute position and the measurement time of the one-side wireless terminal, and the measured absolute position of the own wireless terminal. And absolute position information including information including the measurement time is displayed together with the map.
A position detection communication system characterized by the above-mentioned. A position detection communication system that acquires and displays information on absolute positions and relative positions of a plurality of wireless terminals each including one side and the other side that are detection targets as a group,
The one wireless terminal,
It measures the absolute position of its own wireless terminal, and wirelessly receives information including the measurement time of the other wireless terminal, the wireless terminal ID and the absolute position, and wirelessly receives the information including the reception time of the other wireless terminal. The terminal ID and the absolute position, and the information including the measurement time of the absolute position in the own wireless terminal, the own wireless terminal ID and the absolute position, the relative position information and the absolute position information are displayed together with the map, and,
The other wireless terminal,
The received information and the wireless terminal ID and the absolute position including the measurement time of the one-side wireless terminal, and the relative position information including the information including the measurement time, the own wireless terminal ID and the measured absolute position of the own wireless terminal, and Displaying absolute location information with a map,
A position detection communication system characterized by the above-mentioned. One of the wireless terminals
A process for displaying, together with the map, information including the wireless terminal ID and the reception time of the received wireless terminal on the other side, and relative position information including information including the own wireless terminal ID and the reception time,
The other wireless terminal,
A process of displaying information including the wireless terminal ID and the reception time of the received wireless terminal on one side and relative position information including information including the own wireless terminal ID and the reception time together with a map;
Program that causes a computer to execute the control of the computer. One wireless terminal is
A process of measuring the absolute position of the own wireless terminal,
Wireless reception processing of the information including the absolute position and the measurement time from the other wireless terminal;
Information including the absolute position of the other wireless terminal and the measurement time, and processing for displaying the absolute position information of the information including the absolute position and the measurement time of the own wireless terminal together with a map,
The other wireless terminal
A process of wirelessly receiving the absolute position of one of the wireless terminals and information including the measurement time,
A process of displaying information including the absolute position of the one wireless terminal and the measurement time, and absolute position information including information including the measured absolute position of the own wireless terminal and the measurement time together with the map,
Program that causes a computer to execute the control of the computer. One wireless terminal is
A process of measuring the absolute position of the own wireless terminal,
A process of wirelessly receiving information including the reception time of the other-side wireless terminal, the wireless terminal ID, and the absolute position;
Relative position information and absolute position including information including the reception time of the other wireless terminal, the wireless terminal ID and the absolute position, information including the measurement time of the absolute position of the own wireless terminal, the own wireless terminal ID, and the absolute position Displaying information along with the map;
The other wireless terminal
The received information including the measurement time of the one-side wireless terminal and the wireless terminal ID and the absolute position, and the relative position information including the information including the reception time, the own wireless terminal ID and the measured absolute position of the own wireless terminal, and A process of displaying the absolute position information together with the map,
Program that causes a computer to execute the control of the computer.

Images