TW202009520A - Indoor positioning system transmitting the tag signal sent by the positioning tag to the positioning server through the first positioning base station in a transmission manner of stage-by-stage relay - Google Patents

Abstract

The invention is an indoor positioning system, which includes a positioning tag, a first positioning base station and a positioning server. The first positioning base station receives a tag signal sent by the positioning tag and generates a first base station signal to send. The positioning server receives the first base station signal and calculates positioning information according to the first base station signal. Since the indoor positioning system can be installed indoors, the position of the positioning tag can be located even in the indoor. In addition, since the tag signal sent by the positioning tag is transmitted to the positioning server through the first positioning base station in a transmission manner of stage-by-stage relay, this invention is more flexible in construction, facilitating the set-up work.

Description

Indoor positioning system

The invention is a positioning system, especially an indoor positioning system.

Maps are a common way for people to find directions to their destinations. With the development of technology, most mobile devices are usually equipped with electronic map software to provide users with directions to find destinations. When the user finds the direction of the destination through the electronic map in the mobile device, the first step is to confirm the user’s current location and display it in the electronic map in the mobile device, so as to provide the basis for the user to judge, and then Find directions to your destination.

At present, the commonly used positioning method is to use a global positioning system (GPS), which uses an electronic device to receive satellite signals for positioning, thereby confirming the location of the mobile device and displaying it on an electronic map.

However, using the global positioning system (GPS) positioning method, the satellite signal must be received in an outdoor open space for positioning. However, when the user is indoors, such as a building or a tunnel, the satellite signal is detected by the building or It is blocked by the mountain, and the user's mobile device cannot receive satellite signals for positioning. As a result, the user cannot confirm the current position, and therefore cannot confirm the direction to be followed. Therefore, the existing positioning method still needs further improvement.

In view of the shortcomings of existing positioning methods that cannot be used indoors, the present invention provides an indoor positioning system that allows users to locate indoors and calculate the current location.

The indoor positioning system includes: a positioning tag, sending a tag signal; wherein the tag signal contains a tag identification code; a first positioning base station; wherein when the first positioning base station receives the tag signal sent by the positioning tag , The first positioning base station calculates a first signal strength based on the tag signal sent by the positioning tag, and the first positioning base station sends a first base station signal; wherein the first base station signal includes a first base station identification code, including The tag identification code and the first signal strength; a positioning server; wherein when the positioning server receives the first base station signal, the positioning server calculates a positioning information according to the first base station signal.

The indoor positioning system mainly has the following functions: the positioning server can calculate the label position based on the obtained first base station signal, and the first base station signal can be obtained by wireless reception or by connection.

Since the first positioning base station of the indoor positioning system can be installed indoors, even if it is indoors, the indoor positioning system can still calculate the positioning information and locate the location of the positioning tag.

In addition, since the indoor positioning system transmits data to the positioning server through the first positioning base station through the first positioning base station via the first tag, the indoor positioning system can be more flexible in construction.

In the following, in conjunction with the drawings and preferred embodiments of the present invention, the technical means adopted by the present invention to achieve the intended purpose of the invention will be further described.

Referring to FIG. 1, the present invention is an indoor positioning system. A first preferred embodiment of the indoor positioning system includes a first positioning base station 11, a positioning tag 20, and a positioning server 30.

The positioning tag 20 sends a tag signal, and the tag signal includes a tag identification code.

When the first positioning base station 11 receives the tag signal sent by the positioning tag 20, the first positioning base station 11 calculates a first signal strength according to the tag signal sent by the positioning tag 20, and the first positioning base station 11 sends a The first base station signal. The first base station signal includes a first base station identification code, the tag identification code and the first signal strength. In the preferred embodiment, the first positioning base station 11 sends the first base station signal to the server 14 by broadcast or connection.

When the positioning server 30 receives the first base station signal, the positioning server 30 calculates positioning information according to the first base station signal.

Since the first positioning base station of the indoor positioning system can be installed indoors, even if it is indoors, the indoor positioning system can still calculate the positioning information and locate the location of the positioning tag. In addition, since the indoor positioning system transmits data to the positioning server through the first positioning base station through the first positioning base station via the first tag, the indoor positioning system can be more flexible in construction.

Please refer to FIG. 2. In a second preferred embodiment of the present invention, the indoor positioning system further includes a second positioning base station 12.

When the second positioning base station 12 receives the first base station signal, the second positioning base station 12 sends a second base station signal; wherein the second base station signal includes a second base station identification code and the first base station identification code , The tag identification code and the first signal strength. When the positioning server 30 receives the second base station signal, the positioning server 30 calculates a positioning information according to the second base station signal.

Since the first positioning base station 11 and the second positioning base station 12 of the indoor positioning system can be installed indoors, even if indoors, the first positioning base station 11 or the second positioning base station 12 of the indoor positioning system can still be Receiving the tag signal sent by the positioning tag 11, and the positioning server 30 can calculate the positioning information according to the first base station signal or the second base station signal sent by the first positioning base station 11 or the second positioning base station 12, and further The position of the positioning label 11 is located.

，該第二定位基站12發送的第二基站訊號可表示為：

。For example, the first base station identification code of the first positioning base station 11 is L001, and the label identification code of the positioning tag 20 received by the first positioning base station 11 is T001, and the first positioning base station 11 The signal strength is -45dB. The second base station identification code of the second positioning base station 12 is L002, and the second signal strength calculated by the second positioning base station 12 is -59dB. The first base station signal sent by the first positioning base station 11 can be expressed as:

, The second base station signal sent by the second positioning base station 12 can be expressed as:

.

In the preferred embodiment, the first positioning base station 11 and the second positioning base station 12 transmit and receive through Bluetooth, WiFi, Lora or NBIOT technology.

Further, referring to FIG. 3, the indoor positioning system further includes a third positioning base station 13, and when the third positioning base station 13 receives the second base station signal, the third positioning base station 13 sends a third Base station signal. The third base station signal 15 includes a third base station identification code, the second base station identification code, the second signal strength, the first base station identification code, the tag identification code and the first signal strength. When the positioning server 30 receives the third base station signal, the positioning server 30 calculates the positioning information according to the third base station signal.

The indoor positioning system extends the distribution distance of the first positioning base station 11 and the second positioning base station 12 through the third positioning base station 13, and the first positioning base station 11 or the second positioning is transmitted in a level-by-level relay transmission manner The data received by the base station 12 is further returned to the positioning server 30, thereby increasing the flexibility in constructing the indoor positioning system.

The third positioning base station 13 can also receive, please refer to FIG. 4, when the third positioning base station 13 receives the label signal and the second base station signal, the third positioning base station 13 sends according to the positioning label Calculates a third signal strength, and the third positioning base station 13 sends a third base station signal. The third base station signal includes a third base station identification code, the third signal strength, the second base station identification code, the second signal strength, the first base station identification code, the tag identification code and the first signal strength .

When the positioning server 30 receives the third base station signal, since the third base station signal includes the first signal strength, the second signal strength, and the third signal strength, and the signal strength can represent each base station and the The distance of the positioning tag 20. Therefore, the positioning server 30 can calculate the positioning information through a triangulation method according to the signal of the third base station.

，該第二定位基站12發送的第二基站訊號可表示為：

，該第三定位基站13發送的第三基站訊號可表示為：

。For example, the first base station identification code of the first positioning base station 11 is L001, and the label identification code of the positioning tag 20 received by the first positioning base station 11 is T001, and the first positioning base station 11 The signal strength is -45dB. The second base station identification code of the second positioning base station 12 is L002, and the first signal strength calculated by the second positioning base station 12 is -59dB. The third base station identification code of the third positioning base station 13 is L003. The first base station signal sent by the first positioning base station 11 can be expressed as:

, The second base station signal sent by the second positioning base station 12 can be expressed as:

The third base station signal sent by the third positioning base station 13 can be expressed as:

.

Further, the positioning server 30 stores a positioning information comparison table. When the positioning server 30 receives the second base station signal or the first base station signal, the positioning server 30 generates a lookup table based on the second base station signal or the first base station signal and according to the positioning information comparison table The positioning information.

As shown in FIG. 5, in addition to using the triangular positioning method for positioning, the indoor positioning system can also be positioned by pattern matching (Pattern Matching). During sample comparison training, a user can carry one The mobile device 40 carries an electronic map for mobile training. The mobile device 40 does not need to be connected to the positioning server 30. It only needs to receive the base station signals sent by each base station to find out the signal strength corresponding to each location. After the training is completed, the information is uploaded to the positioning server 30 and stored as the positioning information comparison table. Therefore, when the positioning server 30 receives the first signal strength, the second signal strength, or the third signal strength, it can obtain the positioning information through a lookup table according to the positioning information comparison table.

As shown in FIG. 6, the indoor positioning system further includes a positioning base station gateway 50. When the positioning base station gateway 50 receives the first base station signal, the second base station signal, or the third base station signal, The positioning base station gateway 50 transmits the second base station signal to the positioning server 30 via a network 60. When the positioning server 30 receives the first base station signal, the second base station signal, or the third base station signal, the positioning server 30 calculates the positioning information according to the second base station signal.

With the setting of the positioning base station gateway 50, the first positioning base station 11, the second positioning base station 12, or the third positioning base station 13 can pass through the positioning base station gateway 50 and the remote positioning server 30 Communicate, so the positioning server 30 can be directly installed in the remote machine room without the need to find another place in the area to be received, thereby reducing the installation cost.

In addition, other users use the mobile device 40 to receive the first base station signal sent by the first positioning base station 11, the second positioning base station 12, or the third positioning base station 13 through the network 60 and the positioning base station gateway 50 , The second base station signal or the third base station signal, and can operate like the positioning server 30 to calculate the positioning information. In the preferred embodiment, the positioning base station gateway 50 is connected to the positioning server 30 via WiFi, 3G or 4G mobile network.

Further, the tag signal further includes communication information, the first base station signal further includes the communication information, and the second base station signal further includes the communication information. In this way, the positioning tag 20 can communicate with the positioning server 30 by sending and receiving. In addition, the positioning server 30 sends the communication information, and sends it to the positioning tag via the second positioning base station 12 and the first positioning base station 11, and the positioning tag 20 receives the communication information. In this way, the administrator Communication data can be sent to the user of the positioning tag 20 through the positioning server 30, so that the user can perform accurate operations according to the received communication data. Because bidirectional communication is required, the first base station signal further includes a communication direction information, and the second base station signal also includes the communication direction information. With the communication direction information, when the positioning server 30 receives a signal, it can determine whether the communication information is sent by the positioning server 30 to the positioning tag 20 or returned by the positioning tag 20 through the communication direction information therein Passed back.

或

，該第二定位基站12廣播的第二基站訊號可表示為：

或

。For example, the first base station identification code of the first positioning base station 11 is L001, and the label identification code of the positioning tag 20 received by the first positioning base station 11 is T001, and the first positioning base station 11 The signal strength is -45dB. The second base station identification code of the second positioning base station 12 is L002, and the first signal strength calculated by the second positioning base station 12 is -59dB. The second base station identification code of the third positioning base station 13 is L003. In the communication direction information, D1 stands for backward delivery, and D2 stands for forward delivery. The communication information is "please check gate A". The first base station signal sent by the first positioning base station 11 can be expressed as:

or

The second base station signal broadcast by the second positioning base station 12 can be expressed as:

or

.

，該第二定位基站12發送的第二基站訊號可表示為：

。In the preferred embodiment, the communication information includes a power message, a distress message or a text message. For example, the first base station identification code of the first positioning base station 11 is L001, and the label identification code of the positioning tag 20 received by the first positioning base station 11 is T001, and the first positioning base station 11 The signal strength is -45dB. The second base station identification code of the second positioning base station 12 is L002, and the first signal strength calculated by the second positioning base station 12 is -59dB. The third base station identification code of the third positioning base station 13 is L003. The power message is 90, and the distress message is 0. The first base station signal sent by the first positioning base station 11 can be expressed as:

, The second base station signal sent by the second positioning base station 12 can be expressed as:

.

Please refer to FIG. 7, the indoor positioning system further includes a first transceiver unit 111 and a second transceiver unit 112.

The first transceiver unit 111 is electrically connected to the first positioning base station 11. When the first transceiving unit 111 receives the tag signal sent by the positioning tag, the first transceiving unit 111 transmits the tag signal to the first positioning base station 11.

The second transceiver unit 112 is electrically connected to the first positioning base station 11. When the first transceiver unit 111 receives the tag signal and transmits it to the first positioning base station 11, the first positioning base station 11 calculates the strength of the first signal according to the tag signal sent by the positioning tag, and further passes the second The transceiver unit 112 sends the first base station signal for the second positioning base station 12 to receive.

By the arrangement of the first transceiver unit 111 and the second transceiver unit 112, and the first transceiver unit 111 and the second transceiver unit 112 are connected to the first positioning base station 11 by an extension line, the first One locates the receiving range of the base station 11 and can effectively reduce the number of transmission stages.

In addition, when the second positioning base station 12 receives the first base station signal, the second positioning base station 12 further calculates a base station signal strength based on the first base station signal sent by the first positioning base station 11, and the second positioning base station 12 Send the second base station signal. The second base station signal further includes the signal strength of the base station.

When the positioning server 30 receives the second base station signal, the positioning server 30 further determines whether to generate a retraining reminder information according to the signal strength of the base station. Further, after receiving the first base station signal and calculating the base station signal strength, the second positioning base station 12 transmits the base station signal strength to the positioning server 30, and the positioning server 30 determines the base station signal strength If there is a change, if so, the positioning server 30 can confirm whether to generate the retraining reminder information according to the judgment result.

Or, after the second positioning base station 12 receives the first base station signal and calculates the signal strength of the base station, the second positioning base station 12 can determine whether the signal strength of the base station has changed, and if so, the judgment result Send to the positioning server 30. The positioning server 30 can confirm whether to generate the retraining reminder information according to the judgment result.

Because the indoor environment may change, such as indoor furniture moving or adding a new wall, which may result in obstruction or moving the position of the locator due to other constructions, this will cause errors when positioning through the sample comparison method. Therefore, When the indoor environment changes, you need to re-train the sample comparison. The positioning server 30 of the indoor positioning system can further determine whether to generate the retraining reminder information according to the strength of the base station signal in the second base station signal to remind the user that the sample comparison training needs to be performed again.

Because when the indoor environment changes, the signal strength between the first positioning base station 11 and the second positioning base station 12 will also change. Therefore, the positioning server 30 can calculate the signal strength of the base station according to the signal of the first base station received by the second positioning base station 12 to determine whether the signal strength of the base station changes, thereby confirming that the first positioning base station 11 and the second Locate whether the environment between the base stations 12 has changed, and then remind the user to perform sample comparison training.

In addition, as shown in FIG. 1, when the positioning server 30 receives the first base station signal, the positioning server 30 may further calculate a base station signal strength based on the first base station signal sent by the first positioning base station 11, And the positioning server 30 further determines whether to generate a retraining reminder information according to the signal strength of the base station.

In other words, the positioning server 30 can determine whether the distance to the first positioning base station 11 has been changed or whether there is an obstruction between the first positioning base station 11 according to the received first base station signal, and then determine whether to restart Sample comparison training.

The above is only the preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed in the preferred embodiment as above, it is not intended to limit the present invention. Anyone who is familiar with this technology Personnel, within the scope of not departing from the technical solution of the present invention, when the technical contents disclosed above can be used to make some modifications or modifications to equivalent embodiments of equivalent changes, but any content that does not depart from the technical solution of the present invention, according to the present invention Technical essence Any simple modifications, equivalent changes and modifications to the above embodiments still fall within the scope of the technical solution of the present invention.

11‧‧‧First positioning base station 111‧‧‧First transceiver unit 112‧‧‧Secondary transceiver unit 12‧‧‧Second positioning base station 13‧‧‧ Third positioning base station 20‧‧‧Location tag 30‧‧‧ Positioning server 40‧‧‧Mobile device 50‧‧‧Location base station gateway 60‧‧‧Network

FIG. 1 is a schematic diagram of a first preferred embodiment of the indoor positioning system of the present invention.

2 is a schematic diagram of a second preferred embodiment of the indoor positioning system of the present invention.

FIG. 3 is a schematic diagram of the third preferred embodiment of the indoor positioning system of the present invention in a first use state.

4 is a schematic diagram of the third preferred embodiment of the indoor positioning system of the present invention in a second use state.

5 is a schematic diagram of the indoor positioning system of the present invention when performing sample training.

6 is a schematic diagram of a fourth preferred embodiment of the indoor positioning system of the present invention.

7 is a schematic diagram of a fifth preferred embodiment of the indoor positioning system of the present invention.

11‧‧‧First positioning base station

20‧‧‧Locating label

30‧‧‧Positioning server

Claims (11)

An indoor positioning system includes: a positioning tag that transmits a tag signal; wherein the tag signal includes a tag identification code; a first positioning base station; wherein when the first positioning base station receives the tag signal sent by the positioning tag , The first positioning base station calculates a first signal strength based on the tag signal sent by the positioning tag, and the first positioning base station sends a first base station signal; wherein the first base station signal includes a first base station identification code, The tag identification code and the first signal strength; a positioning server; wherein when the positioning server receives the first base station signal, the positioning server calculates a positioning information according to the first base station signal. The indoor positioning system according to claim 1, further comprising: a second positioning base station; wherein when the second positioning base station receives the first base station signal, the second positioning base station sends a second base station signal; wherein The second base station signal includes a second base station identification code, the first base station identification code, the tag identification code and the first signal strength; wherein when the positioning server receives the second base station signal, the positioning servo The device calculates a piece of positioning information according to the signal of the second base station. The indoor positioning system according to claim 2, wherein when the second positioning base station receives the tag signal and the first base station signal, the second positioning base station calculates a second signal strength based on the tag signal sent by the positioning tag , And the second positioning base station sends a second base station signal; wherein the second base station signal includes a second base station identification code, the second signal strength, the first base station identification code, the tag identification code, and the first Signal strength. The indoor positioning system according to claim 2, wherein the positioning server stores a positioning information comparison table; when the positioning server receives the second base station signal or the first base station signal, the positioning server according to the first Two base station signals or the first base station signal, and the positioning information is generated through a lookup table according to the positioning information comparison table. The indoor positioning system according to claim 2, further comprising: a positioning base station gateway; wherein when the positioning base station gateway receives the second base station signal, the positioning base station gateway uses a network to The second base station signal is transmitted to the positioning server; wherein when the positioning server receives the second base station signal, the positioning server calculates the positioning information according to the second base station signal. The indoor positioning system according to claim 2, wherein: the tag signal further includes communication information; the first base station signal further includes the communication information; and the second base station signal further includes the communication information. The indoor positioning system according to claim 6, wherein the communication information includes a power information, or a distress message or a text message. The indoor positioning system according to claim 2, further comprising: a first transceiving unit electrically connected to the first positioning base station; wherein when the first transceiving unit receives the tag signal sent by the positioning tag, the first The transceiver unit transmits the tag signal to the first positioning base station; a second transceiver unit is electrically connected to the first positioning base station; wherein when the first transceiver unit receives the tag signal and transmits it to the first positioning base station , The first positioning base station calculates the first signal strength according to the tag signal sent by the positioning tag, and further sends the first base station signal through the second transceiver unit for the second positioning base station to receive. The indoor positioning system according to claim 1, further comprising: a second positioning base station; wherein when the second positioning base station receives the signal of the first base station, the second positioning base station sends a signal according to the first positioning base station The first base station signal calculates a base station signal strength, and the second positioning base station sends a second base station signal; wherein the second base station signal further includes the base station signal strength; when the positioning server receives the second base station signal At this time, the positioning server further determines whether to generate a retraining reminder information according to the signal strength of the base station. The indoor positioning system according to claim 2, wherein: when the second positioning base station receives the first base station signal, the second positioning base station further calculates a base station based on the first base station signal sent by the first positioning base station Signal strength, and transmits the signal strength of the base station to the positioning server, the positioning server determines whether the signal strength of the base station has changed, and if so, the positioning server determines whether to generate the retraining reminder information according to the judgment result . The indoor positioning system according to claim 1, further comprising: a second positioning base station; when the second positioning base station receives the signal of the first base station, the second positioning base station further sends according to the first positioning base station The first base station signal calculates the signal strength of a base station, and the second positioning base station directly determines whether the signal strength of the base station has changed. If so, the judgment result is sent to the positioning server, and the positioning server determines the signal strength based on the judgment result. Confirm whether to generate a retraining reminder message.

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