JPWO2015040687A1 - Positioning signal radiation parameter setting method and positioning system - Google Patents

Abstract

A simple method for optimizing the radiation parameters of a positioning signal transmitter is provided. A setting method for setting a radiation parameter of a positioning signal in a positioning signal transmitter, using a mobile terminal including a positioning unit, a data communication unit, a control unit, and a user interface unit as a setting tool The radiation parameter of the positioning signal in the positioning signal transmitter is optimized. Thereby, the operation | work which optimizes a radiation parameter according to the propagation environment of a positioning signal can be made efficient.

Description

  The present invention relates to a setting method for optimizing a radiation parameter of a positioning signal in a positioning system using wireless communication, and a positioning system to which this setting method is applied.

  In recent years, indoor positioning systems using indoor GPS (IMES: Indoor Messaging System), wireless LAN, UWB-IR (Ultra Wideband-Impulse Radio), ultrasonic waves, and the like have attracted attention (see, for example, Patent Document 1). In general, in an indoor positioning system, a current position is estimated by receiving a positioning signal transmitted from a positioning signal transmitter (or transmitter / receiver) installed on a wall, ceiling, or the like by a mobile terminal or the like that the user has. As for position estimation, a method using signal strength, arrival time, direction of arrival, and the like, and a method for directly placing position information on a signal are known.

JP 2009-85928 A

  In indoor positioning systems such as those described above, when signals that propagate through space, such as electromagnetic waves and sound waves, are used, the quality of signal transmission and reception is greatly affected by the conditions of the propagation environment such as the position and material of the ceiling, walls, and fixtures. receive. Therefore, the radiation parameter when the positioning signal transmitter transmits the positioning signal needs to be optimized according to the propagation environment. Furthermore, the requirements for the area of reception of each positioning signal differ depending on the content of the location information service provided by using the positioning system. In order to construct a positioning system that meets the service requirements, the radiation parameter Adjustment is required.

  However, when a positioning system is built in a wide range of buildings (for example, airports, stations, underground shopping areas, etc.), the number of positioning signal transmitters installed becomes enormous, and therefore the radiation parameters of individual positioning signal transmitters It is desirable that the means for performing the optimization be as simple as possible.

  Therefore, the present invention has been made in view of such a demand, and a typical object thereof is to provide a simple method for optimizing a radiation parameter of a positioning signal transmitter.

  The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

  Of the inventions disclosed in the present application, the outline of typical ones will be briefly described as follows.

  (1) A typical positioning signal radiation parameter setting method is a setting method for setting a positioning signal radiation parameter in a positioning signal transmitter. The positioning signal radiation parameter setting method uses a mobile terminal having a positioning unit, a data communication unit, a control unit, and a user interface unit as a setting tool, and emits a positioning signal in the positioning signal transmitter. Optimize parameters.

  More preferably, in the positioning signal radiation parameter setting method, an operator having the mobile terminal stands at at least one reference point in a reception area, and the mobile terminal and the positioning signal transmitter are connected by a data communication line. It is performed in the performed state. In particular, a first step of measuring a reception level of the positioning signal at the mobile terminal while sweeping a radiation parameter of the positioning signal of the positioning signal transmitter, and a reception level of the positioning signal at the mobile terminal are defined. And a second step of selecting the radiation parameter so as to be a value equal to or greater than the value.

  Alternatively, in the positioning signal radiation parameter setting method, an operator having the mobile terminal stands at at least one reference point in a reception area, and the mobile terminal and the positioning signal transmitter are connected by a data communication line. Done in the state. In particular, a first step of receiving the positioning signal of the positioning signal transmitter at the mobile terminal and recording the reception level in a memory in the mobile terminal; and an optimal radiation parameter based on the reception level at the mobile terminal A second step of calculating a value and transmitting an optimum value of this radiation parameter to the positioning signal transmitter.

  (2) A typical positioning system includes a positioning signal transmitter, a positioning unit, a data communication unit, a control unit, and a user interface unit, and optimizes radiation parameters of the positioning signal in the positioning signal transmitter. And a mobile terminal used as a setting tool.

  More preferably, the positioning system is used in a state where an operator having the mobile terminal stands at at least one reference point in a reception area and the mobile terminal and the positioning signal transmitter are connected by a data communication line. It is done. In particular, the positioning signal transmitter sweeps the radiation parameter of the positioning signal, and during the sweep, the mobile terminal measures the reception level of the positioning signal, and the mobile terminal receives the positioning signal reception level. The radiation parameter is selected so that the value is equal to or greater than a specified value.

  Alternatively, the positioning system is used in a state in which an operator having the mobile terminal stands at at least one reference point in a reception area and the mobile terminal and the positioning signal transmitter are connected by a data communication line. In particular, the mobile terminal receives the positioning signal of the positioning signal transmitter, records this reception level in a memory in the mobile terminal, and the mobile terminal calculates an optimum value of a radiation parameter based on the reception level. The optimum value of the radiation parameter is transmitted to the positioning signal transmitter.

  Among the inventions disclosed in the present application, effects obtained by typical ones will be briefly described as follows.

  In other words, a typical effect is that the work of optimizing the radiation parameter according to the propagation environment of the positioning signal can be made efficient.

5 is a flowchart showing an example of a processing flow of a radiation parameter setting method in the positioning system according to Embodiment 1 of the present invention. In the positioning system which concerns on Embodiment 1 of this invention, it is a schematic diagram which shows an example of the mode of the radiation parameter setting operation | work. In the positioning system which concerns on Embodiment 1 of this invention, it is a block diagram which shows an example of a positioning signal transmitter. In the positioning system which concerns on Embodiment 1 of this invention, it is a block diagram which shows an example of a mobile terminal. In the positioning system which concerns on Embodiment 2 of this invention, it is a block diagram which shows an example of a positioning signal transmitter. In the positioning system which concerns on Embodiment 2 of this invention, it is a block diagram which shows an example of a mobile terminal. In the positioning system which concerns on Embodiment 2 of this invention, it is a block diagram which shows an example of an array antenna apparatus. In the positioning system which concerns on Embodiment 2 of this invention, it is a layout figure which shows an example of an array antenna. In the positioning system which concerns on Embodiment 2 of this invention, it is a characteristic view which shows an example of the radiation pattern calculation result of an array antenna. In the positioning system which concerns on Embodiment 3 of this invention, it is a schematic diagram which shows an example of the user interface screen of a mobile terminal. It is a flowchart which shows an example of the processing flow of the setting method of a radiation parameter in the positioning system which concerns on Embodiment 4 of this invention.

  In the following embodiments, when it is necessary for the sake of convenience, the description will be divided into a plurality of sections or embodiments. However, unless otherwise specified, they are not irrelevant and one is the other. There are some or all of the modifications, details, supplementary explanations, and the like. Further, in the following embodiments, when referring to the number of elements (including the number, numerical value, quantity, range, etc.), especially when clearly indicated and when clearly limited to a specific number in principle, etc. Except, it is not limited to the specific number, and may be more or less than the specific number.

  Further, in the following embodiments, the constituent elements (including element steps and the like) are not necessarily indispensable unless otherwise specified and apparently essential in principle. Needless to say. Similarly, in the following embodiments, when referring to the shapes, positional relationships, etc. of the components, etc., the shapes are substantially the same unless otherwise specified, or otherwise apparent in principle. And the like are included. The same applies to the above numerical values and ranges.

[Outline of the embodiment]
First, an outline of the embodiment will be described. In the outline of the present embodiment, as an example, the description will be given with parentheses corresponding constituent elements, reference numerals and the like in parentheses.

  (1) A typical positioning signal radiation parameter setting method of the present embodiment is a setting method for setting a positioning signal radiation parameter in a positioning signal transmitter (positioning signal transmitters 1 and 1A). The positioning signal radiation parameter setting method uses a mobile terminal (mobile terminals 2 and 2A) having a positioning unit, a data communication unit, a control unit, and a user interface unit as a setting tool, and uses the positioning signal. Optimize the radiation parameters of the positioning signal at the transmitter.

  More preferably, in the positioning signal radiation parameter setting method, an operator having the mobile terminal stands at at least one reference point in a reception area, and the mobile terminal and the positioning signal transmitter are connected by a data communication line. It is performed in the performed state. In particular, a first step (S105) of measuring a reception level of the positioning signal at the mobile terminal while sweeping a radiation parameter of the positioning signal of the positioning signal transmitter, and reception of the positioning signal at the mobile terminal And a second step (S108) of selecting the radiation parameter so that the level becomes a value equal to or higher than a specified value.

  Alternatively, in the positioning signal radiation parameter setting method, an operator having the mobile terminal stands at at least one reference point in a reception area, and the mobile terminal and the positioning signal transmitter are connected by a data communication line. Done in the state. In particular, the mobile terminal receives the positioning signal of the positioning signal transmitter and records the reception level in a memory in the mobile terminal (S205), and the mobile terminal emits radiation based on the reception level. A second step (S208, 209) of calculating an optimum value of the parameter and transmitting the optimum value of the radiation parameter to the positioning signal transmitter.

  (2) A typical positioning system of the present embodiment includes a positioning signal transmitter (positioning signal transmitters 1 and 1A), a positioning unit, a data communication unit, a control unit, and a user interface unit, Mobile terminals (mobile terminals 2 and 2A) used as setting tools for optimizing the radiation parameters of the positioning signals in the positioning signal transmitter.

  More preferably, the positioning system is used in a state where an operator having the mobile terminal stands at at least one reference point in a reception area and the mobile terminal and the positioning signal transmitter are connected by a data communication line. It is done. In particular, the positioning signal transmitter sweeps the radiation parameter of the positioning signal, and during the sweep, the mobile terminal measures the reception level of the positioning signal, and the mobile terminal receives the positioning signal reception level. The radiation parameter is selected so that the value is equal to or greater than a specified value.

  Alternatively, the positioning system is used in a state in which an operator having the mobile terminal stands at at least one reference point in a reception area and the mobile terminal and the positioning signal transmitter are connected by a data communication line. In particular, the mobile terminal receives the positioning signal of the positioning signal transmitter, records this reception level in a memory in the mobile terminal, and the mobile terminal calculates an optimum value of a radiation parameter based on the reception level. The optimum value of the radiation parameter is transmitted to the positioning signal transmitter.

  Hereinafter, each embodiment based on the outline | summary of embodiment mentioned above is described in detail based on drawing. Note that components having the same function are denoted by the same reference symbols or related symbols in principle throughout the drawings for describing the embodiments, and the repetitive description thereof will be omitted.

[Embodiment 1]
The positioning system according to the first embodiment and the radiation parameter setting method in this positioning system will be described with reference to FIGS. The positioning system according to the present embodiment is applied to an indoor positioning system.

<Radiation parameter setting method in positioning system>
The processing flow of the radiation parameter setting method in the present embodiment will be described with reference to the flowchart of FIG. 1 and the schematic diagram of FIG.

  FIG. 2 is a schematic diagram showing an example of a radiation parameter setting operation. The positioning system according to the present embodiment includes a positioning signal transmitter 1 and a mobile terminal 2 used as a setting tool for setting a radiation parameter of the positioning signal in the positioning signal transmitter 1.

  The positioning signal transmitter 1 is installed on an indoor ceiling or wall. Preferably, the positioning signal 3 is stopped in the initial state, and the data communication signal by the data communication line 4 is in a connection waiting state. However, the positioning signal 3 does not necessarily have to be stopped at the time of installation work or for the convenience of maintenance during the period from installation to radiation parameter setting work.

  The radiation parameter setting operation is performed by a worker 60 having the mobile terminal 2 standing at at least one reference point (preferably a plurality of reference points) in the positioning area 50 that is a reception area, and the mobile terminal 2 and the positioning signal transmitter 1 Are executed in a state where they are connected by the data communication line 4.

  The work flow of the radiation parameter setting method will be described with reference to FIG. FIG. 1 is a flowchart illustrating an example of a processing flow of a radiation parameter setting method.

  First, the worker 60 connects the data communication line 4 between the mobile terminal 2 as a radiation parameter setting tool and the positioning signal transmitter 1 (S101). The connection of the data communication line 4 with the mobile terminal 2 causes the positioning signal transmitter 1 to switch to the “parameter setting mode” and to receive a command from the mobile terminal 2 (S102).

  Next, the worker 60 moves to a reference point (preferably near the boundary of the positioning area 50) in the positioning area 50, which is a reception area requested by the location information service (S104), and "positioning signal measurement command" Execute. When the “positioning signal measurement command” is executed, the positioning signal transmitter 1 sweeps the radiation parameter of the positioning signal 3, and the mobile terminal 2 measures the reception level of the positioning signal 3 during the sweep (S105).

  By this process, the relationship between the radiation parameter at the reference point and the reception level is obtained. The radiation parameters are preferably the transmission power of the positioning signal 3, the radiation direction, the main beam half width, the polarization angle, and the like. The reception level is preferably RSSI (Received Signal Strength Indication), SNR (Signal-Noise Ratio), CNR (Carrier-Noise Ratio), or the like. Although there may be only one reference point, it is desirable that a plurality of points are taken so as to cover the entire positioning region 50.

  When a plurality of reference points are taken, the mobile terminal 2 first sets the count value i of the reference point to the initial value “1” (S103), and moves the operator 60 with the mobile terminal 2 to the positioning area It is moved to the i-th reference point within 50 (S104). Thereafter, the positioning signal transmitter 1 sweeps the radiation parameter of the positioning signal 3, and the mobile terminal 2 measures the reception level of the positioning signal 3 (S105). Then, in the mobile terminal 2, it is determined whether measurement is completed at all reference points (S106). If the result of this determination is that it has not been completed (S106-no), the count value i is incremented (i ← i + 1) (S107), the process returns to S104, and the worker 60 with the mobile terminal 2 is placed in the positioning area 50. The same processing is repeated by moving to the (i + 1) th reference point. This is repeated until the measurement at all reference points is completed.

  When the processing of the “positioning signal measurement command” at all the reference points is completed (S106-yes), when the “radiation parameter optimization command” is executed in the mobile terminal 2, based on the measurement result at each reference point, Optimization of the radiation parameters is performed (S108). The optimization is executed so that the reception level is equal to or higher than a specified value at all reference points. Here, the specified value is, for example, a value 6 dB larger than the minimum reception sensitivity of the positioning signal 3 in the mobile terminal 2.

  Here, the optimization process may be performed by the processor on the mobile terminal 2 side, and only the optimized radiation parameters may be sent to the positioning signal transmitter 1 by data communication. The mobile terminal 2 receives the positioning signal 3. The level measurement value may be sent to the positioning signal transmitter 1 and the optimization process may be executed by the processor on the positioning signal transmitter 1 side.

  Thereafter, the positioning signal transmitter 1 sets the optimized radiation parameter, switches to the “normal mode”, disconnects the data communication line 4 and starts transmission of the positioning signal 3 (S109).

<Positioning signal transmitter>
FIG. 3 is a block diagram showing an example of the positioning signal transmitter 1 in the present embodiment. The positioning signal transmitter 1 includes a positioning unit 5 (LOC), a positioning signal antenna 5a, a data communication unit 7 (TRANS), a data communication antenna 7a, and a control unit 8 (CONT-U). .

  The positioning unit 5 is preferably a communication means using an RF signal having a frequency mainly in the UHF band to the SHF band, such as IMES, wireless LAN, UWB-IR, or the like, or a communication means using ultrasonic waves, infrared rays, visible light, or the like. . When the positioning unit 5 is a communication means using ultrasonic waves, infrared rays, or visible light, the positioning signal antenna 5a is a radiator and a light emitting unit, respectively.

  The data communication unit 7 is preferably a wireless device based on a communication standard such as wireless LAN, Bluetooth (registered trademark, not shown below), specific low power wireless, and the like.

  By using the same communication means for positioning and data communication, one wireless device may serve as both the positioning unit 5 and the data communication unit 7. IMES, wireless LAN, UWB-IR, etc. are applicable to the communication means used here, for example. By configuring the positioning unit 5 and the data communication unit 7 with a single wireless device, it is possible to reduce the size and cost of the device.

  The control unit 8 interprets a command sent from the mobile terminal 2 via the data communication unit 7 and controls the operation (e.g., radiation parameter) of the positioning unit 5. In addition, the status of the positioning unit 5 is transmitted to the mobile terminal 2 via the data communication unit 7.

<mobile computer>
FIG. 4 is a block diagram showing an example of the mobile terminal 2 in the present embodiment. The mobile terminal 2 includes a positioning unit 9 (LOC), a positioning signal antenna 10, a data communication unit 11 (TRANS), a data communication antenna 12, a control unit 13 (CONT-U), and a user interface unit 14. (UI).

  The positioning unit 9 is preferably a communication unit using an RF signal having a frequency mainly in the UHF band to the SHF band, such as IMES, wireless LAN, UWB-IR, or the like, or a communication unit using ultrasonic waves, infrared rays, visible light, or the like. . When the positioning unit 9 is a communication unit using ultrasonic waves, infrared rays, or visible light, the positioning signal antennas 10 are a receiver and a light receiving unit, respectively.

  The data communication unit 11 is preferably a wireless device based on a communication standard such as wireless LAN, Bluetooth, or specific low power wireless.

  By using the same communication means for positioning and data communication, one wireless device may serve as both the positioning unit 9 and the data communication unit 11. IMES, wireless LAN, UWB-IR, etc. are applicable to the communication means used here, for example. By configuring the positioning unit 9 and the data communication unit 11 with a single wireless device, it is possible to reduce the size and cost of the device.

  The control unit 13 controls operations of the positioning unit 9 and the data communication unit 11.

  The user interface unit 14 has two functions of an input user interface and an output user interface. For example, the input user interface may be a keyboard and the output user interface may be a separate device such as a liquid crystal display, or a single device may be used as both an input user interface and an output user interface by using a touch panel display or the like. good.

  In the mobile terminal 2, the control unit 13 controls operations of the positioning unit 9 and the data communication unit 11 in accordance with a command input from the user interface unit 14 by the worker 60.

<Effect of Embodiment 1>
According to the positioning system according to the present embodiment described above and the radiation parameter setting method in this positioning system, the radiation parameter of the positioning signal in the positioning signal transmitter 1 is optimized by using the mobile terminal 2 as a setting tool. Can be Thereby, a simple method for optimizing the radiation parameter of the positioning signal transmitter 1 can be provided. As a result, it is possible to improve the efficiency of optimizing the radiation parameters in accordance with the positioning signal propagation environment. More details are as follows.

  (11) In the present embodiment, in the state where the worker 60 having the mobile terminal 2 stands at the reference point of the positioning area 50 and the mobile terminal 2 and the positioning signal transmitter 1 are connected by the data communication line, Parameters are set. First, the reception level of the positioning signal at the mobile terminal 2 is measured while sweeping the radiation parameter of the positioning signal of the positioning signal transmitter 1. Furthermore, the radiation parameter is selected so that the reception level of the positioning signal at the mobile terminal 2 becomes a value equal to or higher than a specified value. Then, the positioning signal transmitter 1 can set the radiation parameter selected so that the reception level of the positioning signal is equal to or higher than the specified value at all reference points.

  (12) The positioning signal of the positioning signal transmitter 1 can be a positioning signal based on a communication method such as indoor GPS, wireless LAN, UWB-IR, or the like.

  (13) As a positioning signal radiation parameter in the positioning signal transmitter 1, radiation parameters such as a positioning signal transmission power, a radiation direction, a main beam half width, and a polarization angle can be targeted.

  (14) As the reception level at the mobile terminal 2, reception levels such as RSSI, SNR, and CNR can be targeted.

  (15) The user interface unit 14 of the mobile terminal 2 can be a user interface such as a touch panel display.

[Embodiment 2]
A positioning system according to the second embodiment and a radiation parameter setting method in this positioning system will be described with reference to FIGS. In the present embodiment, a more specific example of the indoor positioning system will be described with respect to the first embodiment described above. In the following, differences from Embodiment 1 described above will be mainly described.

<Positioning signal transmitter>
FIG. 5 is a block diagram showing an example of a positioning signal transmitter 1A in the present embodiment. In the positioning signal transmitter 1A shown in FIG. 5, the positioning unit 5 is an IMES transmitter 5A (IMES-TRANS), and the data communication unit 7 is Bluetooth (7A). The control unit 8 includes a micro control unit 8A (MCU) and a memory 8B (MEM). The positioning signal antenna 5a is an array antenna device 15, and the control circuit 16 (CONT-C) controls the parameters of each antenna element.

  Each block of the positioning signal transmitter 1A shown in FIG. 5 may be separately modularized and connected by a parent board or the like, or all the blocks may be mounted on a single printed board. .

<mobile computer>
FIG. 6 is a block diagram showing an example of the mobile terminal 2A in the present embodiment. In the mobile terminal 2A shown in FIG. 6, the positioning unit 9 is a GPS receiver 9A (GPS-REC) capable of receiving an IMES signal, and the data communication unit 11 is Bluetooth (11A). The control unit 13 includes a microprocessing unit 13A (MPU), and the user interface unit 14 includes a touch screen 14A (TS).

  The operator 60 can operate using the touch screen 14A. The mobile terminal 2A is installed with dedicated application software for performing radiation parameter setting work, and is devised so that a simple operation can be performed by inputting and outputting the work flow in an interactive manner. The mobile terminal 2A may be a dedicated terminal for performing this work, but preferably uses a commercially available tablet terminal or smartphone equipped with a GPS reception function, a Bluetooth communication function, or the like. In that case, the application software can be created using an open development environment such as Android (registered trademark).

<Array antenna device>
FIG. 7 is a block diagram showing an example of the array antenna apparatus 15 in the present embodiment. The array antenna device 15 includes a main antenna element 21, sub antenna elements 22-1 to 2-4, and a control circuit 16. The control circuit 16 includes power distributors 23 and 24 (DIV), amplitude adjusters 25 and 27 (A), a variable phase shifter 26 (φ), and a control micro control unit 28 (MCU). To do.

  The micro control unit 28 sets the amplitude of the positioning signal from the IMES transmitter 5A and the amplitudes and phase shifts of the sub antenna elements 22-1 to 2-4 according to the command from the micro control unit 8A of the positioning signal transmitter 1A. . The amplitude of the positioning signal from the IMES transmitter 5A is set by adjusting the amplitude adjuster 27. In the sub antenna elements 22-1 to 2-4, the amplitude is set by adjustment of the amplitude adjuster 25, and the phase shift is set by variable of the variable phase shifter 26. By appropriately selecting these values, the maximum gain and the half width of the main beam of the radio wave radiated from the array antenna device 15 can be controlled.

<Layout of array antenna>
FIG. 8 is a layout diagram showing an example of the array antenna of the array antenna device 15 shown in FIG. The array antenna includes a main antenna element 21 and sub antenna elements 22-1 to 2-4.

  The sub antenna elements 22-1 to 2-4 are arranged rotationally symmetric about the main antenna element 21. The distance d between the main antenna element 21 and the sub antenna elements 22-1 to 2-4 is ¼ of the wavelength of the carrier wave of the IMES signal. That is, it is about 47.6 mm. In FIG. 8, the array antenna is arranged on the printed circuit board 29, and each antenna element may be a chip antenna or a pattern antenna.

<Radiation pattern calculation result of array antenna>
FIG. 9 is a characteristic diagram illustrating an example of a radiation pattern calculation result of the array antenna illustrated in FIGS. 7 and 8. In FIG. 9, the horizontal axis represents the radiation angle (Elevation angle) of the antenna, the vertical axis represents the gain (Directivity), and each graph is normalized by the power in the maximum radiation direction.

_{E 1} a supply voltage of the main antenna element 21, when the power supply voltage of the sub antenna 22-1～4 and _{E 2,} by changing the E 1 / _{E 2} to 0-3, the array antenna apparatus 15 emits The half width of the main beam of the radio wave can be controlled. In the example of FIG. 9, when E ₁ / E ₂ = 3, the half width of the main beam is narrowed and the directivity is the sharpest (strong), and the half width of the main beam is widened as E ₁ / E ₂ is reduced. Is weak.

  In the configuration of the present embodiment, the positioning signal transmitter 1A according to the work flow described in the above-described first embodiment using the maximum gain of the positioning signal antenna (array antenna device 15) and the half width of the main beam as the radiation parameters. Optimization of the radiation parameters can be performed. In addition to the main beam half width, the transmission power, the radiation direction, the polarization angle, and the like of the positioning signal 3 are also targeted as the radiation parameters.

<Effect of Embodiment 2>
According to the positioning system according to the present embodiment described above and the radiation parameter setting method in the positioning system, the effect similar to that of the first embodiment described above can be obtained in a more specific example of the indoor positioning system. it can. Further, the effects different from those of the first embodiment are as follows.

  (21) As positioning signal transmitter 1A, positioning unit 5 is IMES transmitter 5A, data communication unit 7 is Bluetooth (7A), control unit 8 is micro control unit 8A and memory 8B, and positioning signal antenna 5a is an array antenna device. 15 and the control circuit 16 can be used respectively.

  (22) As the mobile terminal 2A, the positioning unit 9 uses a GPS receiver 9A, the data communication unit 11 uses Bluetooth (11A), the control unit 13 uses a microprocessing unit 13A, and the user interface unit 14 uses a touch screen 14A. it can.

[Embodiment 3]
A positioning system according to Embodiment 3 and a radiation parameter setting method in this positioning system will be described with reference to FIG. In the present embodiment, dedicated application software (user interface) operating on the mobile terminal 2 will be described with respect to the first and second embodiments described above. In the following, differences from Embodiments 1 and 2 described above will be mainly described.

<User interface screen of mobile terminal>
FIG. 10 is a schematic diagram showing an example of a user interface screen of the mobile terminal 2 in the present embodiment. In FIG. 10, a user interface (UI) screen is assumed to be a touch screen.

  The application software is already provided with a map of the service area, the installation position and ID of the positioning signal transmitter 1, the receiving area of the positioning signal 3, and the like according to the specifications of the position information service. The map displayed on the UI screen includes information such as the store (florist) 31, the reception area 32 in the location information service, the installation position and ID (33) of the positioning signal transmitter 1, A list 34 of radio signals from the positioning signal transmitter 1 received by the mobile terminal 2 is also displayed. The list 34 displays the ID (Received ID) and signal strength (Signal strength) of the positioning signal being received. In addition to the received signal strength (RSSI), SNR, CNR, and the like are also targeted as reception levels.

  When the worker 60 moves in the service area with the mobile terminal 2, the ID signal transmitted from the data communication unit (for example, wireless LAN) of the positioning signal transmitter 1 is received, and the positioning signal transmitter 1 having the ID is received. Display a map of the area where it is installed. A list 34 of IDs and signal strengths received at that position is also displayed.

  For example, when the operator 60 wants to adjust the radiation parameter of the positioning signal transmitter 1 (setting position and ID 33) covering the reception area 32 near the florist shop 31, the icon (setting position) of the positioning signal transmitter 1 on the map And ID33) may be touched. With this operation, the mobile terminal 2 connects the positioning signal transmitter 1 (setting position and ID 33) with ID: 1234 (signal strength: 101) to the data communication line, and the positioning signal transmitter 1 switches to the parameter setting mode. .

  Thereafter, a “positioning signal measurement command” button 35 (Measurement) appears on the UI screen, and the operator 60 preliminarily selects an appropriate reference point (the reference point is also displayed on the map of the UI screen) on the map of the UI screen. If the “positioning signal measurement command” button 35 is touched, the positioning signal transmitter 1 and the mobile terminal 2 start measurement in conjunction with each other.

  When the measurement at the first reference point is completed, a “positioning signal measurement command” button 35 and a “radiation parameter optimization command” button 36 (Optimization) appear on the UI screen. If you want to further measure at a different reference point, move to that reference point and touch the “Positioning signal measurement command” button 35, or if you want to finish the measurement and proceed to optimization of the radiation parameter The “command” button 36 may be touched.

<Effect of Embodiment 3>
According to the positioning system according to the present embodiment described above and the radiation parameter setting method in this positioning system, in the example of dedicated application software that operates on the mobile terminal 2, the same as in the first embodiment described above. An effect can be obtained. Further, the effects different from those of the first embodiment are as follows.

  (31) Touch for displaying a service area map, positioning signal transmitter 1 installation position and ID, positioning signal 3 receiving area, positioning signal ID and RSSI (SNR, CNR, etc.) being received as a user interface screen A screen or the like can be used.

[Embodiment 4]
A positioning system according to the fourth embodiment and a radiation parameter setting method in this positioning system will be described with reference to FIG. In the present embodiment, another example of the radiation parameter setting method will be described with respect to the above-described first to third embodiments. In the following, differences from Embodiments 1 to 3 described above will be mainly described.

<Radiation parameter setting method>
FIG. 11 is a flowchart showing an example of the processing flow of the radiation parameter setting method in the present embodiment.

  First, the worker 60 connects the data communication line 4 between the mobile terminal 2 as a radiation parameter setting tool and the positioning signal transmitter 1 (S201). By connecting the data communication line 4 with the mobile terminal 2, the positioning signal transmitter 1 is set to the “reference mode” (S202). In this “reference mode”, the radiation parameter is preferably set so that the reception area is the largest. For example, the transmission signal intensity is maximum, the beam width is maximum, and so on.

  Hereinafter, a case will be described in which a plurality of reference points in the positioning area 50, which is a reception area requested by the location information service, are taken so as to cover the entire positioning area 50.

  When a plurality of reference points are taken, the mobile terminal 2 first sets the reference point count value i to “1” (S203), and the operator 60 with the mobile terminal 2 is placed in the positioning area 50. Move to the i-th reference point (S204). Thereafter, the mobile terminal 2 receives the positioning signal 3 and records the reception level in the memory in the mobile terminal 2 (S205). Then, in the mobile terminal 2, it is determined whether measurement is completed at all reference points (S206). If the result of this determination is that it has not been completed (S206-no), the count value i is incremented (i ← i + 1) (S207), the process returns to S204, and the worker 60 with the mobile terminal 2 is placed in the positioning area 50. The same processing is repeated by moving to the (i + 1) th reference point. This is repeated until the measurement at all reference points is completed.

  When the processing of the “positioning signal measurement command” is completed at all the reference points (S206-yes), the mobile terminal 2 calculates the optimum value of the radiation parameter based on the measured reception level (S208). Then, the optimal value of the radiation parameter is transmitted from the mobile terminal 2 to the positioning signal transmitter 1 (S209). The radiation parameters are preferably the transmission power of the positioning signal 3, the radiation direction, the main beam half width, the polarization angle, and the like. The reception level is preferably RSSI, SNR, CNR, or the like.

  The calculation of the optimum value is executed so that the reception level is equal to or higher than the specified value at all reference points. Here, the specified value is, for example, a value 6 dB larger than the minimum reception sensitivity of the positioning signal 3 in the mobile terminal 2. Here, the optimum value may be calculated by the processor on the mobile terminal 2 side, and the optimum value of the radiation parameter may be sent to the positioning signal transmitter 1, but the mobile terminal 2 measures the reception level measured at each reference point. It may be sent to the signal transmitter 1 and the calculation of the optimum value of the radiation parameter may be performed by the processor on the positioning signal transmitter 1 side.

  Thereafter, the positioning signal transmitter 1 sets the radiation parameter to an optimum value, switches to the normal mode, disconnects the data communication line 4 and starts transmission of the positioning signal 3 (S210).

<Effect of Embodiment 4>
According to the positioning system according to the present embodiment described above and the radiation parameter setting method in this positioning system, in another example of the radiation parameter setting method, the same effect as in the first embodiment described above can be obtained. it can. Further, the effects different from those of the first embodiment are as follows.

  (41) In the present embodiment, in a state where an operator having the mobile terminal 2 stands at the reference point of the positioning area 50 and the mobile terminal 2 and the positioning signal transmitter 1 are connected by a data communication line, the radiation parameter Is set. First, the mobile terminal 2 receives the positioning signal of the positioning signal transmitter 1 and records this reception level in the memory in the mobile terminal 2. Further, the mobile terminal 2 calculates an optimum value of the radiation parameter based on the reception level, and transmits the optimum value of the radiation parameter to the positioning signal transmitter 1. Then, the positioning signal transmitter 1 can set the radiation parameter with the optimum value transmitted from the mobile terminal 2.

  (42) In the present embodiment, it is not necessary to sweep the radiation parameter when measuring the reception level, so that the measurement time can be shortened. Furthermore, since it is not necessary to perform communication between the mobile terminal 2 and the positioning signal transmitter 1 each time the reception level is measured, the processing can be simplified.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the present invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say. For example, the above-described first to fourth embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. . Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment. Furthermore, the form which combines each embodiment can also be changed as the scope of the present invention.

DESCRIPTION OF SYMBOLS 1,1A ... Positioning signal transmitter 2, 2A ... Mobile terminal 3 ... Positioning signal 4 ... Data communication line 5 ... Positioning part 5A ... IMES transmitter 5a ... Positioning signal antenna (radiator, light emitting part)
7 ... Data communication unit 7A ... Bluetooth
7a ... Data communication antenna 8 ... Control unit 8A ... Micro control unit 8B ... Memory 9 ... Positioning unit 9A ... GPS receiver 10 ... Positioning signal antenna (receiver, light receiving unit)
11: Data communication unit 11A: Bluetooth
DESCRIPTION OF SYMBOLS 12 ... Antenna for data communication 13 ... Control part 13A ... Microprocessing unit 14 ... User interface part 14A ... Touch screen 15 ... Array antenna device 16 ... Control circuit 21 ... Main antenna element 22-1-4 ... Sub antenna element 23 ... Electric power Distributor 24 ... Power distributor 25 ... Amplitude adjuster 26 ... Variable phase shifter 27 ... Amplitude adjuster 28 ... Micro control unit 29 ... Printed circuit board 31 ... Store (florist)
32 ... Receiving area for location information service 33 ... Installation position and ID of positioning signal transmitter
34 ... List of positioning signal IDs and signal strengths being received 35 ... "Positioning signal measurement command" button 36 ... "Radiation parameter optimization command" button 50 ... Positioning region 60 ... Worker

Claims (15)

A setting method for setting a radiation parameter of a positioning signal in a positioning signal transmitter,
Radiation of positioning signal that optimizes the radiation parameter of the positioning signal in the positioning signal transmitter using a mobile terminal having a positioning unit, a data communication unit, a control unit, and a user interface unit as a setting tool Parameter setting method. In the positioning signal radiation parameter setting method according to claim 1,
In a state where an operator having the mobile terminal stands at at least one reference point in the reception area and the mobile terminal and the positioning signal transmitter are connected by a data communication line,
A first step of measuring a reception level of the positioning signal at the mobile terminal while sweeping a radiation parameter of the positioning signal of the positioning signal transmitter;
A second step of selecting the radiation parameter such that a reception level of the positioning signal at the mobile terminal is a value equal to or higher than a specified value;
A positioning signal radiation parameter setting method. In the positioning signal radiation parameter setting method according to claim 2,
When a plurality of the reference points are taken,
In the first step, the count value i of the reference point is set to an initial value in the mobile terminal, the worker holding the mobile terminal is moved to the i-th reference point in the positioning area, and the positioning is performed. The signal transmitter sweeps the radiation parameter of the positioning signal, the mobile terminal measures the reception level of the positioning signal, and determines whether the measurement is completed at all reference points in the mobile terminal, If not completed, the count value i is incremented, the worker holding the mobile terminal is moved to the i-th reference point in the positioning area, and the same process is repeated, Repeat until the measurement is complete,
In the second step, when the processing at all the reference points is completed, the reception level of the positioning signal at the mobile terminal is set at all the reference points based on the measurement results at the respective reference points. A positioning signal radiation parameter setting method, wherein the radiation parameter is selected so as to be equal to or greater than a specified value. In the positioning signal radiation parameter setting method according to claim 3,
After the second step, the positioning signal transmitter sets the radiation parameter selected so that the reception level of the positioning signal is not less than a specified value at all reference points, and disconnects the data communication line. A positioning signal radiation parameter setting method comprising a third step of starting transmission of the positioning signal. In the positioning signal radiation parameter setting method according to claim 1,
In a state where an operator having the mobile terminal stands at at least one reference point in the reception area and the mobile terminal and the positioning signal transmitter are connected by a data communication line,
A first step of receiving the positioning signal of the positioning signal transmitter at the mobile terminal and recording the reception level in a memory in the mobile terminal;
A second step of calculating an optimum value of the radiation parameter based on the reception level at the mobile terminal and transmitting the optimum value of the radiation parameter to the positioning signal transmitter;
A positioning signal radiation parameter setting method. In the positioning signal radiation parameter setting method according to claim 5,
When a plurality of the reference points are taken,
In the first step, the reference value count value i is set to an initial value at the mobile terminal, the worker with the mobile terminal is moved to the i-th reference point in a positioning area, and the mobile terminal The terminal receives the positioning signal, records the reception level in a memory in the mobile terminal, and determines whether measurement is completed at all reference points in the mobile terminal, and if not completed, Increment the count value i, move the worker with the mobile terminal to the i-th reference point in the positioning area, repeat the same process, repeat until the measurement at all reference points is completed,
In the second step, when the processing at all reference points is completed, the mobile terminal calculates an optimum value of the radiation parameter based on the reception level measured at each reference point, and the mobile terminal A positioning signal radiation parameter setting method for transmitting an optimum value of the radiation parameter to a positioning signal transmitter. In the positioning signal radiation parameter setting method according to claim 6,
After the second step, the positioning signal transmitter sets the optimum radiation parameter transmitted from the mobile terminal, disconnects the data communication line, and starts transmission of the positioning signal. A positioning signal radiation parameter setting method. In the positioning signal radiation parameter setting method according to claim 1,
The positioning signal radiation parameter setting method, wherein the positioning signal is based on at least one communication method of indoor GPS, wireless LAN, and UWB-IR. In the positioning signal radiation parameter setting method according to claim 1,
The positioning parameter radiation parameter setting method, wherein the radiation parameter is at least one of transmission power, radiation direction, main beam half width, and polarization angle of the positioning signal. In the positioning signal radiation parameter setting method according to claim 1,
The positioning signal radiation parameter setting method, wherein the reception level is at least one of RSSI, SNR, and CNR. In the positioning signal radiation parameter setting method according to claim 1,
The positioning parameter radiation parameter setting method, wherein the user interface unit is a touch panel display. In the positioning signal radiation parameter setting method according to claim 11,
The user interface screen of the user interface unit includes a service area map, an installation position and ID of the positioning signal transmitter, a receiving area of the positioning signal, an ID and a reception level of the positioning signal being received, and the positioning signal transmitter Touch to display at least one of a “positioning signal measurement command” button that starts measurement in conjunction with the mobile terminal and a “radiation parameter optimization command” button that finishes the measurement and optimizes the radiation parameter Radiation parameter setting method for positioning signal, which is a screen. A positioning signal transmitter,
A mobile terminal comprising a positioning unit, a data communication unit, a control unit, and a user interface unit, and used as a setting tool for optimizing a radiation parameter of a positioning signal in the positioning signal transmitter;
Having a positioning system. The positioning system according to claim 13,
In a state where an operator having the mobile terminal stands at at least one reference point in the reception area and the mobile terminal and the positioning signal transmitter are connected by a data communication line,
The positioning signal transmitter sweeps the radiation parameter of the positioning signal, and during the sweep, the mobile terminal measures the reception level of the positioning signal,
The positioning system, wherein the mobile terminal selects the radiation parameter so that a reception level of the positioning signal becomes a value equal to or higher than a specified value. The positioning system according to claim 13,
In a state where an operator having the mobile terminal stands at at least one reference point in the reception area and the mobile terminal and the positioning signal transmitter are connected by a data communication line,
The mobile terminal receives the positioning signal of the positioning signal transmitter, records this reception level in a memory in the mobile terminal,
The positioning system, wherein the mobile terminal calculates an optimum value of a radiation parameter based on the reception level and transmits the optimum value of the radiation parameter to the positioning signal transmitter.