TWI542896B - Radiation parameter setting method of positioning signal - Google Patents

Description

Radiation parameter setting method of positioning signal

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

In recent years, indoor positioning systems using indoor GPS (IMES: Indoor Messaging System), wireless LAN, UWB-IR (Ultra Wide Band-Impulse Radio), and ultrasonic waves have been attracting attention (see, for example, Patent Document 1). Generally, in an indoor positioning system, a current position is estimated by receiving a positioning signal transmitted from a positioning signal transmitter (or a transmitter) provided on a wall or a ceiling, such as a mobile terminal held by a user. Position estimation is a method of using signal strength, arrival time, arrival direction, etc., or a method of directly carrying position information on a signal.

[Previous Technical Literature] [Patent Literature]

Patent Document 1: Japanese Laid-Open Patent Publication No. 2009-85928

In the indoor positioning system as described above, when a signal propagating in space such as an electromagnetic wave or an acoustic wave is used, the signal is transmitted and received depending on the conditions of the propagation environment such as the position or material of the ceiling, the wall, and the daily appliance. Quality is greatly affected. Therefore, the radiation parameters when the positioning signal transmitter transmits the positioning signal must be optimized in accordance with the propagation environment. Furthermore, depending on the content of the location information service provided by the location system, The requirements for the width of the receiving area of each positioning signal are different, and the positioning parameters must be adjusted in order to construct a positioning system consistent with the service requirements.

However, in the case of constructing a positioning system in a wide-ranging building (for example, an airport, a station, an underground street, etc.), since the number of positioning signal transmitters provided is relatively large, it is preferable to perform radiation of each positioning signal transmitter. The mechanism for optimizing the parameters is as simple as possible.

Accordingly, the present invention has been made in view of such a need, and a representative object thereof is to provide a simple method of optimizing the radiation parameters of a positioning signal transmitter.

The above and other objects and novel features of the present invention will be apparent from the description and appended claims.

A brief description of the representative of the invention disclosed in the present invention will be described below.

(1) A method for setting a radiation parameter of a representative positioning signal is a method for setting a radiation parameter of a positioning signal of a positioning signal transmitter. The radiological parameter setting method of the positioning signal is to use a positioning unit, a data communication unit, a control unit, and a mobile terminal of the user's face as a setting tool to optimize the radiation parameters of the positioning signal of the positioning signal transmitter.

More preferably, the radio frequency parameter setting method of the positioning signal is performed by the operator holding the mobile terminal standing at at least one reference point of the receiving area, and connecting the state of the mobile terminal and the positioning signal transmitter by a data communication line. Go on. In particular, the first step is: measuring the receiving level of the positioning signal in the mobile terminal while scanning the radiation parameter of the positioning signal of the positioning signal transmitter; and the second step The radiation parameter is selected such that the reception level of the positioning signal in the mobile terminal becomes a value equal to or greater than a predetermined value.

Alternatively, the method for setting the radiation parameter of the positioning signal is to hold the above mobile terminal The operator of the terminal stands at at least one reference point in the receiving area, and is connected in a state where the data communication line is connected to the mobile terminal and the positioning signal transmitter. In particular, the first step is: the first step of receiving, by the mobile terminal, the positioning signal of the positioning signal transmitter, and recording the receiving level in a memory in the mobile terminal; and the second step The mobile terminal calculates an optimal value of the radiation parameter based on the received level, and transmits the optimal value of the radiation parameter to the positioning signal transmitter.

(2) A representative positioning system includes: a positioning signal transmitter; and a mobile terminal having a positioning unit, a data communication unit, a control unit, and a user interface, and as a radiation of a positioning signal of the positioning signal transmitter The parameter optimization tool is used.

More preferably, the positioning system is used when the operator holding the mobile terminal stands at at least one reference point in the receiving area and connects the mobile terminal and the positioning signal transmitter by a data communication line. In particular, the positioning signal transmitter scans the radiation parameter of the positioning signal, and during the scanning, the mobile terminal measures the receiving level of the positioning signal, and the mobile terminal sets the receiving level of the positioning signal to a value equal to or greater than a predetermined value. The above radiological parameters are selected in a manner.

Alternatively, the positioning system is used when the operator holding the mobile terminal stands at at least one reference point in the receiving area and is connected to the mobile terminal and the positioning signal transmitter by a data communication line. In particular, the mobile terminal receives the positioning signal of the positioning signal transmitter, and records the receiving level in a memory in the mobile terminal, and the mobile terminal calculates an optimal value of the radiation parameter based on the receiving level, and The optimum value of the radiation parameter is sent to the above positioning signal transmitter.

The effects obtained by the representative of the invention disclosed in the present invention will be briefly described as follows.

That is, the representative effect is to make it possible to optimize the operation of optimizing the radiation parameters in accordance with the propagation environment of the positioning signal.

1‧‧‧ Positioning signal transmitter

1A‧‧‧ Positioning signal transmitter

2‧‧‧Mobile terminal

2A‧‧‧Mobile terminals

3‧‧‧ Positioning signal

4‧‧‧data communication lines

5‧‧‧ Positioning Department

5A‧‧‧IMES transmitter

5a‧‧‧Anatomy signal antenna (radiator, light-emitting unit)

7‧‧‧Information and Communication Department

7A‧‧‧Bluetooth

7a‧‧‧Data communication antenna

8‧‧‧Control Department

8A‧‧‧Micro Control Unit

8B‧‧‧ memory

9‧‧‧ Positioning Department

9A‧‧‧GPS receiver

10‧‧‧ Positioning signal antenna (receiver, light receiving unit)

11‧‧‧Information and Communication Department

11A‧‧‧Bluetooth

12‧‧‧Data communication antenna

13‧‧‧Control Department

13A‧‧‧Microprocessing unit

14‧‧‧Users face

14A‧‧‧ touch screen

15‧‧‧Array antenna device

16‧‧‧Control circuit

21‧‧‧Main antenna components

22-1~4‧‧‧Auxiliary antenna elements

23‧‧‧Power distributor

24‧‧‧Power distributor

25‧‧‧Amplitude adjuster

26‧‧‧Variable Phase Shifter

27‧‧‧Amplitude adjuster

28‧‧‧Micro Control Unit

29‧‧‧Printing substrate

31‧‧‧ shop (flower shop)

32‧‧‧Receiving area in location information service

33‧‧‧Setting position and ID of the positioning signal transmitter

34‧‧‧List of ID and signal strength of the positioning signal in reception

35‧‧‧"Location Signal Measurement Command" button

36‧‧‧"Radio Parameter Optimization Command" button

50‧‧‧Location area

60‧‧‧ Operators

D‧‧‧distance

S101~S109‧‧‧Steps

S201~S210‧‧‧Steps

Fig. 1 is a flow chart showing an example of a processing flow of a method of setting a radiation parameter in the positioning system according to the first embodiment of the present invention.

Fig. 2 is a schematic view showing an example of a setting operation of a radiation parameter in the positioning system according to the first embodiment of the present invention.

Fig. 3 is a block diagram showing an example of a positioning signal transmitter in the positioning system according to the first embodiment of the present invention.

Fig. 4 is a block diagram showing an example of a mobile terminal in the positioning system according to the first embodiment of the present invention.

Fig. 5 is a block diagram showing an example of a positioning signal transmitter in the positioning system according to the second embodiment of the present invention.

Fig. 6 is a block diagram showing an example of a mobile terminal in the positioning system according to the second embodiment of the present invention.

Fig. 7 is a block diagram showing an example of an array antenna device in the positioning system according to the second embodiment of the present invention.

Fig. 8 is a layout view showing an example of an array antenna in the positioning system according to the second embodiment of the present invention.

Fig. 9 is a characteristic diagram showing an example of a calculation result of a radiation pattern of an array antenna in the positioning system according to the second embodiment of the present invention.

Fig. 10 is a schematic view showing an example of a user interface screen of the mobile terminal in the positioning system according to the third embodiment of the present invention.

Fig. 11 is a flow chart showing an example of a processing flow of a method of setting a radiation parameter in the positioning system according to the fourth embodiment of the present invention.

In the following embodiments, for the sake of convenience, a plurality of parts or embodiments will be described as necessary, but unless otherwise specified, they are not If there is no relationship with each other, there is a relationship between one or all of the changes, details, supplementary explanations, etc. of one of the other. In addition, in the following embodiments, when the number of elements (including the number, the numerical value, the quantity, the range, and the like) is mentioned, the case is not specifically limited to a specific number, and the like is not specifically described. The number limited to the specific number may be a specific number or more.

Further, in the following embodiments, the constituent elements (including the element steps and the like) are of course not necessary except for the case where it is specifically indicated and the case where it is considered to be essential in principle. Similarly, in the following embodiments, when the shape, the positional relationship, and the like of the constituent elements and the like are mentioned, except for the case where it is specifically indicated and the case where it is considered that the principle is not the case, it is substantially similar or similar to the shape or the like. Wait. This point is also the same for the above values and ranges.

[Summary of Embodiments]

First, the outline of the embodiment will be described. In the outline of the present embodiment, constituent elements, symbols, and the like corresponding to the embodiments will be described in the parentheses as an example.

(1) The radiation parameter setting method of the representative positioning signal of the present embodiment is a method for setting the radiation parameters of the positioning signals of the positioning signal transmitters (positioning signal transmitters 1, 1A). The radio frequency parameter setting method of the positioning signal uses a positioning unit, a data communication unit, a control unit, and a user-facing mobile terminal (mobile terminal 2, 2A) as a setting tool to set a positioning signal of the positioning signal transmitter. The radiation parameters are optimized.

More preferably, the radio frequency parameter setting method of the positioning signal is performed by the operator holding the mobile terminal standing at at least one reference point of the receiving area, and connecting the state of the mobile terminal and the positioning signal transmitter by a data communication line. Go on. In particular, the first step (S105) is to measure the radiation parameter of the positioning signal of the positioning signal transmitter while measuring the positioning signal in the mobile terminal. And the second step (S108), wherein the radiation parameter is selected such that a receiving level of the positioning signal in the mobile terminal is a value equal to or greater than a predetermined value.

Alternatively, the radio parameter setting method of the positioning signal is performed when the operator holding the mobile terminal stands at at least one reference point of the receiving area, and connects the mobile terminal and the positioning signal transmitter with a data communication line. get on. In particular, the method has the following steps: a first step (S205), wherein the mobile terminal receives the positioning signal of the positioning signal transmitter, and records the receiving level in a memory in the mobile terminal; and a second step ( S208, 209), wherein the mobile terminal calculates an optimal value of the radiation parameter based on the receiving level, and sends the optimal value of the radiation parameter to the positioning signal transmitter.

(2) A representative positioning system of the present embodiment includes: a positioning signal transmitter (positioning signal transmitter 1, 1A); and a mobile terminal (mobile terminal 2, 2A) including a positioning unit, a data communication unit, and a control unit. And the user interface, and is used as a setting tool for optimizing the radiation parameters of the positioning signal of the positioning signal transmitter.

More preferably, the positioning system is used when the operator holding the mobile terminal stands at at least one reference point in the receiving area and connects the mobile terminal and the positioning signal transmitter by a data communication line. In particular, the positioning signal transmitter scans the radiation parameter of the positioning signal, and during the scanning, the mobile terminal measures the receiving level of the positioning signal, and the mobile terminal sets the receiving level of the positioning signal to a predetermined value or more. The value of the way to select the above radiation parameters.

Alternatively, the positioning system is used when the operator holding the mobile terminal stands at at least one reference point in the receiving area and is connected to the mobile terminal and the positioning signal transmitter by a data communication line. In particular, the mobile terminal receives the positioning signal of the positioning signal transmitter, and records the receiving level in a memory in the mobile terminal, and the mobile terminal calculates an optimal value of the radiation parameter based on the receiving level, and The optimum value of the radiation parameter is sent to the above positioning signal transmitter.

Hereinafter, each embodiment based on the outline of the above embodiment will be described in detail based on the drawings. In the drawings, the same reference numerals are attached to the components having the same functions, and the description thereof will be omitted.

[Embodiment 1]

The positioning system of the first embodiment and the method of setting the radiation parameters of the positioning system will be described with reference to Figs. 1 to 4 . The positioning system of this embodiment is applied to an indoor positioning system.

<How to set the radiation parameters of the positioning system>

The processing flow of the setting method of the radiation parameter of the present embodiment will be described using the flowchart of Fig. 1 and the schematic diagram of Fig. 2.

Fig. 2 is a schematic view showing an example of a case where a setting operation of a radiation parameter is performed. The positioning system of the present embodiment includes a positioning signal transmitter 1 and a mobile terminal 2, which are used as a setting tool for setting a radiation parameter of a positioning signal of the positioning signal transmitter 1.

The positioning signal transmitter 1 is installed in a ceiling or a wall of an indoor room. Preferably, in the initial state, the positioning signal 3 is stopped, and the data communication signal formed by the data communication line 4 is in a state of waiting for connection. However, the positioning signal 3 does not have to be stopped depending on whether the maintenance is performed during the setting operation or during the period from the setting to the radiation parameter setting operation.

The setting operation of the radiation parameter is performed by the operator 60 holding the mobile terminal 2 standing at at least one reference point (preferably a plurality of reference points) of the positioning area 50 in the receiving area, and the mobile terminal is connected by the data communication line 4. 2 is executed in the state of the positioning signal transmitter 1.

The flow of the operation of the setting method of the radiation parameters will be described based on Fig. 1 . Fig. 1 is a flow chart showing an example of a processing flow of a method of setting a radiation parameter.

First, the operator 60 is connected to the data communication line 4 between the mobile terminal 2, which is a setting tool of the radiation parameter, and the positioning signal transmitter 1, (S101). By the connection with the data communication line 4 of the mobile terminal 2, the positioning signal transmitter 1 is switched to the "parameter setting mode", and the command from the mobile terminal 2 is accepted (S102).

Next, the operator 60 moves to a reference point (preferably near the boundary of the positioning area 50) in the positioning area 50 which is the receiving area requested by the location information service (S104), and executes the "positioning signal measurement command". When the "positioning signal measurement command" is executed, the positioning signal transmitter 1 scans the radiation parameters of the positioning signal 3, and during the scanning, the mobile terminal 2 performs measurement of the reception level of the positioning signal 3 (S105).

By this processing, the relationship between the radiation parameter of the reference point and the reception level can be obtained. The radiation parameter is preferably the transmission power of the positioning signal 3, the radiation direction, the main beam half-value width, the polarization angle, and the like. Further, the reception level is preferably RSSI (Received Signal Strength Indication), SNR (Signal-Noise Ratio), CNR (Carrier-Noise Ratio), and the like. The reference point may be only one, but it is preferable to use a plurality of points in such a manner as to cover the entire positioning area 50.

When the complex point reference point is used, the mobile terminal 2 first sets the count value i of the reference point to "1" of the initial value (S103), and causes the operator 60 holding the mobile terminal 2 to move to the positioning area 50. The i-th reference point (S104). Thereafter, the positioning signal transmitter 1 scans the radiation parameters of the positioning signal 3, and the mobile terminal 2 measures the receiving level of the bit signal 3 (S105). Then, at the mobile terminal 2, it is judged whether or not the measurement is completed at all the reference points (S106). When the result of the determination is that the result is not completed (S106-no), the count value i is incremented (i←i+1) (S107), and the process returns to S104 to move the operator 60 holding the mobile terminal 2 to the positioning. The same processing is repeated for the (i+1)th reference point in the area 50. 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 (S106-yes), after the "radiation parameter optimization command" is executed by the mobile terminal 2, the radiation parameters are executed based on the measurement results at the respective reference points. Optimization (S108). The optimization is performed in such a manner that all the reference points have the reception level become a predetermined value or more. Here, the predetermined value is a value which is 6 dB larger than the lowest reception sensitivity of the positioning signal 3 in the mobile terminal 2, for example.

Here, the processor on the mobile terminal 2 side can perform optimization processing, and only the optimized radiological parameters are sent to the positioning signal transmitter 1 by data communication, and the mobile terminal 2 can also make the positioning signal 3 The received level measurement value is sent to the positioning signal transmitter 1, and the processing of the optimization is performed 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", and cuts off the data communication line 4 to start 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 of the 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 mechanism that mainly uses an RF signal of a frequency of a UHF band to an SHF band, such as an IMES, a wireless LAN, or a UWB-IR, or a communication mechanism that uses ultrasonic waves, infrared rays, visible light, or the like. When the positioning unit 5 is a communication mechanism using ultrasonic waves, infrared rays, or visible light, the positioning signal antenna 5a serves as a radiator and a light-emitting portion, respectively.

The data communication unit 7 is preferably a wireless device based on communication specifications such as wireless LAN, Bluetooth (registered trademark, hereinafter omitted), and specific small power wireless.

It is also possible to have one wireless device function as both the positioning unit 5 and the data communication unit 7 by using the same communication mechanism for positioning and data communication. For the communication mechanism used here, for example, IMES, wireless LAN, UWB-IR, or the like can be applied. By constituting the positioning unit 5 and the data communication unit 7 by one wireless device, it is expected that the size and cost of the device can be reduced.

The control unit 8 interprets the command transmitted from the mobile terminal 2 via the data communication unit 7, and controls the operation (radiation parameter, etc.) of the positioning unit 5. Moreover, the status of the positioning unit 5 and the like are transmitted to the mobile terminal 2 via the data communication unit 7.

<mobile terminal>

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

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

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

It is also possible to have one wireless device function as both the positioning unit 9 and the data communication unit 11 by using the same communication mechanism for positioning and data communication. For the communication mechanism used here, for example, IMES, wireless LAN, UWB-IR, or the like can be applied. By constituting the positioning unit 9 and the data communication unit 11 by one wireless device, it is expected that the size and cost of the device can be reduced.

The control unit 13 controls the operation of the positioning unit 9 or the material communication unit 11.

The user interface 14 has two functions of inputting a user interface and outputting a user interface. For example, the input user interface may be a keyboard, the output user interface may be a liquid crystal display, and the device may be a different device, and the input user interface and the output user interface may be combined by one device by using a touch panel display or the like. .

In the mobile terminal 2, the control unit 13 controls the operation of the positioning unit 9 or the material communication unit 11 based on an instruction input by the operator 60 from the user interface 14.

<Effect of Embodiment 1>

According to the positioning system of the present embodiment described above and the method of setting the radiation parameters of the positioning system, the radiation parameters of the positioning signal of the positioning signal transmitter 1 can be optimized by using the mobile terminal 2 as a setting tool. Thereby, a simple method of optimizing the radiation parameters of the positioning signal transmitter 1 can be provided. As a result, it is possible to streamline the operation of optimizing the radiation parameters in accordance with the propagation environment of the positioning signal. More details are as follows.

(11) In the present embodiment, the operator 60 holding the mobile terminal 2 stands at the reference point of the positioning area 50, and the mobile terminal 2 and the positioning signal are connected by the data communication line. The radiation parameter is set in the state of the delivery machine 1. First, the reception level of the positioning signal in the mobile terminal 2 is measured while scanning the radiation parameters of the positioning signal of the positioning signal transmitter 1. Furthermore, the radiation parameter is selected such that the reception level of the positioning signal in the mobile terminal 2 becomes a value equal to or greater than a predetermined value. Then, the positioning signal transmitter 1 can be set to a radiation parameter selected such that the reception level of the positioning signal is equal to or higher than the predetermined value of all the reference points.

(12) As the positioning signal of the positioning signal transmitter 1, a positioning signal using a communication method such as indoor GPS, wireless LAN, or UWB-IR can be used as a target.

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

(14) As the reception level in the mobile terminal 2, the reception levels of RSSI, SNR, CNR, and the like can be targeted.

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

[Embodiment 2]

The positioning system of the second embodiment and the method of setting the radiation parameters of the positioning system will be described with reference to Figs. 5 to 9 . In the present embodiment, a more specific example of the indoor positioning system will be described with respect to the first embodiment. Hereinafter, differences from the above-described first embodiment will be mainly described.

<positioning signal transmitter>

Fig. 5 is a block diagram showing an example of the positioning signal transmitter 1A of 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). Further, 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 parameters of the respective antenna elements are controlled by the control circuit 16 (CONT-C).

Each block of the positioning signal transmitter 1A shown in FIG. 5 can be modularized and connected by a mother board or the like, or can be realized by mounting all the blocks on one printed circuit board.

<mobile terminal>

Fig. 6 is a block diagram showing an example of the mobile terminal 2A of the embodiment. In the mobile terminal 2A shown in FIG. 6, the positioning unit 9 is a GPS receiver 9A (GPS-REC) that can receive an IMES signal, and the data communication unit 11 is a Bluetooth (11A). Further, a micro processing unit 13A (MPU) is provided as the control unit 13, and a touch panel 14A (TS) is provided as the user interface 14 .

The operator 60 can operate using the touch screen 14A. In the mobile terminal 2A, a dedicated application software for setting a radiation parameter is installed, and it is possible to perform an easy operation by inputting and outputting a workflow in a dialog format. The mobile terminal 2A may be a dedicated terminal for performing the present operation, but it is preferably a commercially available tablet terminal or smart phone equipped with a GPS receiving function or a Bluetooth communication function. In this case, the application software system 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 device 15 of the embodiment. The array antenna device 15 includes a main antenna element 21, sub antenna elements 22-1 to 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 micro control unit 28 (MCU) for control.

The micro control unit 28 sets the amplitude of the positioning signal from the IMES transmitter 5A and the amplitude and phase shift of the sub antenna elements 22-1 to 4 in accordance with a 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 the adjustment of the amplitude adjuster 27. In the sub-antenna elements 22-1 to 4, the amplitude is set by the adjustment of the amplitude adjuster 25, and the phase shift is set by the variable phase shifter 26. By appropriately selecting the equivalent value, the maximum gain of the electric wave radiated from the array antenna device 15 and the main beam half value width can be controlled.

<Layout of Array Antenna>

Fig. 8 is a layout view showing an example of an array antenna of the array antenna device 15 shown in Fig. 7. The array antenna includes a main antenna element 21 and sub antenna elements 22-1 to 4.

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

<Architectural Radiation Pattern Calculation Results>

Fig. 9 is a characteristic diagram showing an example of the calculation result of the radiation pattern of the array antenna shown in Figs. 7 and 8. In FIG. 9, the horizontal axis represents the Elevation angle of the antenna, and the vertical axis represents the gain. Each graph is normalized by the power of the maximum radiation direction.

When the power supply voltage of the main antenna element 21 is E ₁ and the power supply voltage of the sub antenna elements 22-1 to 4 is E ₂ , the array antenna can be controlled by changing E ₁ /E ₂ by 0 to 3. The main beam of the radio wave radiated by the device 15 has a half value width. In the example of Fig. 9, when E ₁ /E ₂ =3, the half-value width of the main beam is narrowed, and the directivity is sharpest (strong). As E ₁ /E ₂ becomes smaller, the half-value width of the main beam becomes wider. Directivity is weak.

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

<Effects of Embodiment 2>

According to the positioning system of the present embodiment described above and the method of setting the radiation parameters of the positioning system, in a more specific example of the indoor positioning system, the same effects as those of the above-described first embodiment can be obtained. Further, the effects different from the above-described first embodiment are as follows.

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

(22) As the mobile terminal 2A, the GPS receiver 9A can be used for the positioning unit 9, the Bluetooth (11A) can be used for the data communication unit 11, the microprocessor unit 13A can be used for the control unit 13, and the touch is applied to the user interface 14 Screen 14A.

[Embodiment 3]

The positioning system of the third embodiment and the method of setting the radiation parameters of the positioning system will be described with reference to FIG. In the present embodiment, a dedicated application software (user interface) that operates on the mobile terminal 2 will be described with respect to the above-described first and second embodiments. Hereinafter, differences from the above-described first and second embodiments will be mainly described.

<user interface screen of mobile terminal>

Fig. 10 is a schematic view showing an example of a user interface screen of the mobile terminal 2 of the embodiment. In FIG. 10, the user interface (UI) screen is set as a touch screen.

In the application software, the map of the service area, the setting position and ID of the positioning signal transmitter 1, the receiving area of the positioning signal 3, and the like are given according to the specifications of the location information service. The map displayed on the UI screen includes information such as a shop (flower shop) 31, a receiving area 32 in the location information service, a setting position of the positioning signal transmitter 1, and an ID (33), and currently displays the mobile terminal 2 simultaneously. A list 34 of wireless signals from the positioning signal transmitter 1. In the list 34, the ID (Received ID) and the signal strength (Signal strength) of the positioning signal being received are displayed. Further, as the reception level, in addition to the received signal strength (RSSI), SNR, CNR, and the like are also targeted.

When the operator 60 holds the mobile terminal 2 moving within the service area, it receives the ID information transmitted by the data communication unit (for example, the wireless LAN) of the positioning signal transmitter 1, and displays the vicinity of the positioning signal transmitter 1 having the ID. Map of it. Also, a list 34 of IDs and signal strengths received at the location is also displayed.

For example, the operator 60 wants to adjust the receiving area 32 near the shop 31 covering the flower shop. In the case of locating the radiation parameters of the signal transmitter 1 (set position and ID 33), it is only necessary to touch the icon (set position and ID 33) of the positioning signal transmitter 1 on the map. With this operation, the mobile terminal 2 connects the positioning signal transmitter 1 (set position and ID 33) of ID: 1234 (signal strength: 101) with the data communication line, and the positioning signal transmitter 1 switches to the parameter setting mode.

Thereafter, when the "positioning signal measurement command" button 35 (Measurement) appears on the UI screen, the operator 60 moves to the appropriate reference point of the receiving area 32 shown on the map (the reference point can also be displayed in advance on the UI screen). When the "positioning signal measurement command" button 35 is touched on the map, the positioning signal transmitter 1 and the mobile terminal 2 interlock to start measurement.

When the measurement at the first reference point is completed, the "positioning signal measurement command" button 35 and the "radiation parameter optimization command" button 36 (Optimization) appear on the UI screen. If you want to further measure at different reference points, you can touch the "positioning signal measurement command" button 35 by moving to the reference point. If you want to end the measurement and enter the optimization of the radiation parameters, you only need to touch the radiation. The parameter optimization command button 36 is sufficient.

<Effects of Embodiment 3>

According to the positioning system of the present embodiment described above and the method of setting the radiation parameters of the positioning system, the same effects as those of the first embodiment described above can be obtained by the example of the application software dedicated to the operation of the mobile terminal 2. Further, the effects different from the above-described first embodiment are as follows.

(31) As the user interface screen, a map showing the service area, a setting position and ID of the positioning signal transmitter 1, a receiving area of the positioning signal 3, an ID of the positioning signal in reception, and RSSI (SNR, CNR, etc.) can be used. Touch screen, etc.

[Embodiment 4]

The positioning system of the fourth embodiment and the method of setting the radiation parameters of the positioning system will be described with reference to Fig. 11 . In the present embodiment, the radiation is applied to the above-described first to third embodiments. Another example of the parameter setting method will be described. Hereinafter, differences from the above-described first to third embodiments will be mainly described.

<How to set the radiation parameters>

Fig. 11 is a flow chart showing an example of the processing flow of the method of setting the radiation parameters of the embodiment.

First, the operator 60 connects the data communication line 4 between the mobile terminal 2, which is a setting tool of the radiation parameter, and the positioning signal transmitter 1, (S201). The positioning signal transmitter 1 is set to the "reference mode" by the connection with the data communication line 4 of the mobile terminal 2 (S202). In the "reference mode", it is preferable to set the radiation parameter so that the receiving area is the widest. For example, the transmitted signal strength is the largest, the beam width is the largest, and the like.

Hereinafter, a description will be given of a case where a reference point in the positioning area 50, which is a receiving area required by the location information service, is a plurality of points so as to cover the entire positioning area 50.

When the complex point reference point is used, the mobile terminal 2 first sets the count value i of the reference point to "1" (S203), and moves the operator 60 holding the mobile terminal 2 to the position in the positioning area 50. Reference point i (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, at the mobile terminal 2, it is judged whether or not the measurement is completed at all the reference points (S206). When the result of the determination is that the result is not completed (S206-no), the count value i is incremented (i←i+1) (S207), and the process returns to S204 to move the operator 60 holding the mobile terminal 2 to the positioning. The same processing is repeated for the (i+1)th reference point in the area 50. This is repeated until the measurement at all reference points is completed.

At the time point 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 optimum value of the radiation parameter is transmitted from the mobile terminal 2 to the positioning signal transmitter 1 (S209). The radiation parameter is preferably the transmission power of the positioning signal 3, the radiation direction, the main beam half-value width, the polarization angle, and the like. Moreover, the receiving level is preferably RSSI, SNR, CNR et al.

The calculation of the optimum value is performed in such a manner that all the reference points make the reception level become a predetermined value or more. Here, the predetermined value is a value which is 6 dB larger than the lowest reception sensitivity of the positioning signal 3 in the mobile terminal 2, for example. Here, the processor on the mobile terminal 2 side can perform the calculation of the optimal value, and send the optimal value of the radiation parameter to the positioning signal transmitter 1, and can also make the receiving level of the mobile terminal 2 measured at each reference point. It is sent to the positioning signal transmitter 1 to calculate the optimum value of the radiation parameter by the processor on the side of the signal transmitter 1 .

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

<Effects of Embodiment 4>

According to the positioning system of the present embodiment described above and the method of setting the radiation parameters of the positioning system, in another example of the method of setting the radiation parameters, the same effects as those of the above-described first embodiment can be obtained. Further, the effects different from the above-described first embodiment are as follows.

(41) In the present embodiment, the operator holding the mobile terminal 2 stands at the reference point of the positioning area 50, and the radiation parameter is performed in a state where the mobile terminal 2 and the positioning signal transmitter 1 are connected by the data communication line. set up. First, the positioning signal of the positioning signal transmitter 1 is received by the mobile terminal 2, and the receiving level is recorded in the memory in the mobile terminal 2. Furthermore, 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 be set to the radiation parameter of the optimum value transmitted from the mobile terminal 2.

(42) In the present embodiment, when the reception level is measured, since the radiation parameter is not required to be scanned, the measurement time can be shortened. Furthermore, the processing can be simplified by not requiring communication between the mobile terminal 2 and the positioning signal transmitter 1 each time the reception level is measured.

The invention completed by the inventors has been specifically described above based on the embodiments, but The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit and scope of the invention. For example, the above-described first to fourth embodiments are described in detail in order to explain the present invention in an easy-to-understand manner, and are not limited to those having all of the constituents described. Further, a part of the configuration of one embodiment may be replaced with a configuration of another embodiment, and a configuration of another embodiment may be added to the configuration of a certain embodiment. Further, addition, removal, and replacement of other configurations may be performed for one of the configurations of the respective embodiments. Further, combinations of the embodiments may be changed to the scope of the invention.

S101~S109‧‧‧Steps

Claims (9)

A method for setting a radiation parameter of a positioning signal, which is used for setting a radiation parameter of a positioning signal of a positioning signal transmitter; using a mobile terminal including a positioning unit, a data communication unit, a control unit, and a user interface as a setting tool, Optimizing the radiation parameter of the positioning signal of the positioning signal transmitter; and the operator holding the mobile terminal stands at at least one reference point of the receiving area, and connects the mobile terminal and the positioning signal by a data communication line In the state of the transmitter, the method includes the following steps: the first step of measuring the receiving level of the positioning signal in the mobile terminal while scanning the radiation parameter of the positioning signal of the positioning signal transmitter; and the second step The radiation parameter is selected such that the reception level of the positioning signal in the mobile terminal is equal to or greater than a predetermined value; wherein, in the case of using the plurality of reference points, the first step is The mobile terminal sets the count value i of the reference point to an initial value to hold the movement The operator moves to the i-th reference point in the positioning area, the positioning signal transmitter scans the radiation parameter of the positioning signal, the mobile terminal measures the receiving level of the positioning signal, and then determines whether the mobile terminal determines whether When the measurement is completed at all the reference points, the count value i is incremented, and the operator holding the mobile terminal is moved to the i-th reference point in the positioning area, and the same processing is repeated. Repeating until the measurement at all the reference points is completed; and the second step is to complete the processing at all the reference points, based on the measurement results at the respective reference points, at the mobile terminal, so that the mobile terminal The radiation parameter is selected such that the reception level of the positioning signal is equal to or greater than a predetermined value of all the reference points. The method for setting a radiation parameter of the positioning signal of claim 1, comprising the third step, after the second step, the positioning signal transmitter is configured to set the receiving position of the positioning signal to The radiological parameters selected by the method in which all the reference points are equal to or greater than a predetermined value are cut off, and the transmission of the positioning signal is started. A method for setting a radiation parameter of a positioning signal, which is used for setting a radiation parameter of a positioning signal of a positioning signal transmitter; using a mobile terminal including a positioning unit, a data communication unit, a control unit, and a user interface as a setting tool, Optimizing the radiation parameter of the positioning signal of the positioning signal transmitter; and the operator holding the mobile terminal stands at at least one reference point of the receiving area, and connects the mobile terminal and the positioning signal by a data communication line In the state of the transmitter, the method includes the following steps: the first step of receiving, by the mobile terminal, the positioning signal of the positioning signal transmitter, and recording the receiving level in a memory in the mobile terminal; and a step of calculating, by the mobile terminal, an optimal value of the radiation parameter based on the received level, and transmitting the optimal value of the radiation parameter to the positioning signal transmitter; wherein, when a plurality of the reference points are used, The first step is that the mobile terminal sets the count value i of the reference point to an initial value to hold Above the operator of said mobile terminal moves to i-th reference point within the location area, said mobile terminal receives the positioning signal, the received level recorded in memory within said mobile terminal, then the mobile terminal to the judgment Whether the measurement is completed at all the reference points, and if the situation is not completed, the count value i is incremented, and the operator holding the mobile terminal is moved to the i-th reference point in the positioning area, and the same is repeated. Processing, repeating until the measurement at all the reference points is completed; and the second step is to calculate the time of processing at all the reference points, and calculate the most the radiation parameters based on the received levels measured by the mobile terminals at the reference points. Preferably, the optimal value of the radiation parameter is transmitted from the mobile terminal to the positioning signal transmitter. A method for setting a radiation parameter of a positioning signal according to claim 3, comprising a third step, wherein the third step is after the second step, and the positioning signal transmitter is set to an optimum value transmitted from the mobile terminal. The transmission of the above positioning signal is started by radiating the parameters and cutting off the above data communication line. The method for setting a radiation parameter of a positioning signal according to any one of claims 1 to 4, wherein the positioning signal is formed by at least one of indoor GPS, wireless LAN, and UWB-IR. The radiation parameter setting method of the positioning signal according to any one of claims 1 to 4, wherein the radiation parameter is at least one of a transmission power, a radiation direction, a main beam half-value width, and a polarization angle of the positioning signal. The method for setting a radiation parameter of a positioning signal according to any one of claims 1 to 4, wherein the receiving level is at least one of RSSI, SNR, and CNR. The method for setting a radiation parameter of a positioning signal according to any one of claims 1 to 4, wherein the user interface is a touch panel display. The radio parameter setting method of the positioning signal of claim 8, wherein the user interface image of the user interface displays a map of a service area, a setting position and an ID of the positioning signal transmitter, a receiving area of the positioning signal, and a receiving The ID and the receiving level of the above positioning signal are used to make the above positioning The "signal signal measurement command" button that the signal transmitter starts to measure in conjunction with the mobile terminal, and at least one of the "radiation parameter optimization command" buttons that end the measurement and optimize the radiation parameters.