CN117979415A - Low-power-consumption wireless transmission and positioning system and method - Google Patents
Low-power-consumption wireless transmission and positioning system and method Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a low-power consumption wireless transmission and positioning system and a method, comprising the following steps: the Bluetooth beacon is used for sending beacon information to a Bluetooth module of the terminal equipment; the Bluetooth module of the terminal equipment is used for acquiring beacon information after being awakened, sending the beacon information to the microcontroller, completing the sending and entering a dormant state; the microcontroller of the terminal equipment is used for waking up the wireless module when the beacon information is acquired, transmitting the beacon information to the gateway equipment through the wireless module, and enabling the wireless module to enter a dormant state after the transmission is completed; and the gateway equipment is used for determining the longitude and latitude corresponding to the beacon information after receiving the beacon information and determining the positioning information of the terminal equipment according to the longitude and latitude and the beacon information. And the position positioning with low power consumption and high precision is realized.
Description
Technical Field
The invention relates to the technical field of low-power-consumption transmission positioning, in particular to a low-power-consumption wireless transmission and positioning system and method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Most of the current positioning schemes are realized by GPS, WIFI, BLE and other technologies, the consumption of power consumption is huge in the use process, the equipment powered by a battery cannot be used for a long time, the dependence of GPS and WIFI on signal base stations is large, and the type of positioning scheme in areas which cannot be covered by some base stations has higher deviation in positioning accuracy based on normal positioning.
Therefore, the positioning method based on the Bluetooth technology is generated, but when the positioning is performed by the Bluetooth technology, the data transmission distance is limited, and the approximate position of the beacon in the map is displayed by the map mark only by the Bluetooth beacon and the indoor map visualization mode, so that the positioning is realized, and the positioning precision is lower.
Disclosure of Invention
In order to solve the problems, the invention provides a low-power-consumption wireless transmission and positioning system and a method, which can realize accurate positioning and enlarge the positioning range while ensuring low power consumption.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first aspect, a low power wireless transmission and positioning system is provided, including:
The Bluetooth beacon is used for sending beacon information to a Bluetooth module of the terminal equipment;
The Bluetooth module of the terminal equipment is used for acquiring beacon information after being awakened, sending the beacon information to the microcontroller, completing the sending and entering a dormant state;
the microcontroller of the terminal equipment is used for waking up the wireless module when the beacon information is acquired, transmitting the beacon information to the gateway equipment through the wireless module, and enabling the wireless module to enter a dormant state after the transmission is completed;
And the gateway equipment is used for determining the longitude and latitude corresponding to the beacon information after receiving the beacon information and determining the positioning information of the terminal equipment according to the longitude and latitude and the beacon information.
Further, the microcontroller of the terminal device is configured to trigger wake-up by an external timer when the terminal device actively transmits beacon information to the gateway device, and actively wake-up the bluetooth module after wake-up; when the gateway equipment actively acquires the beacon information around the terminal equipment, the gateway equipment is actively awakened by the wireless module, and after the gateway equipment is awakened, a request for acquiring the beacon information is sent to the Bluetooth module to awaken the Bluetooth module.
Further, the wireless module is configured to, when the gateway device actively acquires beacon information around the terminal device, be in a sleep cycle wake-up state, when a wake-up interval is reached, actively wake-up to detect an air preamble, and actively wake-up the microcontroller, and when it is detected that an effective preamble exists in the air, reset the next wake-up time, and reenter the sleep state.
Further, the beacon information sent by the Bluetooth beacon comprises a signal incidence angle and a signal strength;
Gateway equipment, which is used for determining each position information of the terminal equipment according to each beacon information and the longitude and latitude corresponding to the beacon information; when only one piece of beacon information is acquired, adding the position information of the terminal equipment and the longitude and latitude corresponding to the beacon information to acquire the positioning information of the terminal equipment; when a plurality of beacon information is acquired, a plurality of position information of the terminal equipment is placed in a coordinate system constructed by taking longitude and latitude corresponding to one of the beacon information as an origin, a plurality of position coordinates of the terminal equipment are acquired, and coordinates of points with the same distance as each position coordinate are calculated; and adding the coordinates of the point and the longitude and latitude of the origin of the coordinate system where the coordinates are located to obtain the positioning information of the terminal equipment.
Further, the gateway device determines the location information of the terminal device according to the beacon information and the longitude and latitude corresponding to the beacon information, which comprises the following steps:
Determining a signal intensity distance according to the signal intensity; establishing a coordinate system by taking longitude and latitude corresponding to the beacon information as an origin; forming a right triangle by the terminal equipment and the origin and coordinate axes of the coordinate system; and determining the position information of the terminal equipment according to the signal intensity distance, the signal incidence angle and the sine and cosine theorem of the triangle.
Further, the gateway device calculates the coordinates of the point having the same distance from each position coordinate as follows:
When two beacon information is acquired, calculating to acquire two position coordinates, and averaging the two position coordinates to acquire the coordinates of the point with the same distance as each position coordinate;
When the obtained beacon information is more than or equal to three beacon information, three position coordinates are selected from all the obtained position coordinates, and according to the three position coordinates, the center coordinates of an inscribed circle of which the three position coordinates form a triangle are obtained through calculation, wherein the center coordinates are coordinates of points with the same distance with each position coordinate.
Further, the longitude and latitude database is used for storing the longitude and latitude of the Bluetooth beacon, and updating the longitude and latitude stored in the longitude and latitude database after the position of the Bluetooth beacon changes;
And the gateway equipment is used for acquiring the longitude and latitude corresponding to the beacon information from the longitude and latitude database.
In a second aspect, a low-power wireless transmission and positioning method is provided, including:
sending beacon information to a Bluetooth module of the terminal equipment through a Bluetooth beacon;
When the Bluetooth module of the terminal equipment is awakened, acquiring beacon information, sending the beacon information to the microcontroller, completing the sending, and entering a dormant state;
when the microcontroller of the terminal equipment acquires the beacon information, waking up the wireless module, transmitting the beacon information to the gateway equipment through the wireless module, and enabling the wireless module to enter a dormant state after the transmission is completed;
after receiving the beacon information, the gateway equipment determines the longitude and latitude corresponding to the beacon information, and determines the positioning information of the terminal equipment according to the longitude and latitude and the beacon information.
In a third aspect, an electronic device is provided that includes a memory and a processor, and computer instructions stored on the memory and running on the processor, which when executed by the processor, perform the steps of a low power wireless transmission and positioning method.
In a fourth aspect, a computer readable storage medium is provided for storing computer instructions that, when executed by a processor, perform the steps of a low power wireless transmission and positioning method.
Compared with the prior art, the invention has the beneficial effects that:
1. The invention uses the Bluetooth and wireless low-power consumption techniques to transfer information, and continuously switches the low-power consumption state through the Bluetooth module and the wireless module to enable the power consumption of the whole system to reach a lowest balance state, thereby realizing the low power consumption of the system.
2. The invention carries out the transmission of the beacon information by adding a wireless technology, expands the positioning range, is not only limited in the room, but also can provide positioning in the mountain areas of the jungle where some base stations are rare.
3. The invention can obtain the longitude and latitude of the terminal equipment through the beacon information, and can determine the position of the terminal equipment according to the longitude and latitude of the terminal equipment and the longitude and latitude corresponding to the beacon information, thereby realizing the accurate positioning of the terminal equipment.
4. The invention acquires the longitude and latitude corresponding to the beacon information from the longitude and latitude database, the longitude and latitude in the longitude and latitude database can be updated in real time, the position of the terminal equipment can be updated and increased according to the longitude and latitude, the error is smaller and smaller, when the number of beacons and the longitude and latitude are enough, even cm-level error can be realized, and the position positioning precision is further improved.
Additional aspects of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
Fig. 1 is a schematic diagram of longitude and latitude determination of an embodiment disclosed terminal device.
Detailed Description
The invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Example 1
In this embodiment, a low power wireless transmission and positioning system is disclosed, comprising:
The Bluetooth beacon is used for sending beacon information to a Bluetooth module of the terminal equipment;
The Bluetooth module of the terminal equipment is used for acquiring beacon information after being awakened, sending the beacon information to the microcontroller, completing the sending and entering a dormant state;
the microcontroller of the terminal equipment is used for waking up the wireless module when the beacon information is acquired, transmitting the beacon information to the gateway equipment through the wireless module, and enabling the wireless module to enter a dormant state after the transmission is completed;
And the gateway equipment is used for determining the longitude and latitude corresponding to the beacon information after receiving the beacon information and determining the positioning information of the terminal equipment according to the longitude and latitude and the beacon information.
The embodiment also provides a longitude and latitude database, which is used for storing the longitude and latitude of the Bluetooth beacon, and updating the longitude and latitude stored in the longitude and latitude database after the position of the Bluetooth beacon changes. Arranging a proper amount of Bluetooth beacons in advance in an area to be positioned, setting a unique identifier for each Bluetooth beacon, acquiring the longitude and latitude of each arranged Bluetooth beacon, and storing the longitude and latitude of the Bluetooth beacon into a longitude and latitude database. Specific:
And opening the Bluetooth function of the mobile terminal equipment, starting Bluetooth ibeacon (accurate positioning technology based on Bluetooth) software, scanning the Bluetooth beacon by scanning an ibeacon data packet under a broadcast channel, selecting and updating the longitude and latitude of the current Bluetooth beacon into a longitude and latitude database by the mobile terminal equipment when the mobile terminal equipment scans the current Bluetooth beacon, and confirming to generate a unique identifier of the Bluetooth beacon by UUID, major and minor.
After the Bluetooth beacon is distributed, the longitude and latitude database contents can be uploaded to a cloud server from the mobile terminal equipment through an MQTT (message queue telemetry transport protocol) for storage, and the gateway equipment is uploaded to the line through the MQTT and then downloads and updates the longitude and latitude database to the local from the cloud.
When the terminal equipment needs to be positioned, the microcontroller of the terminal equipment determines the position of the terminal equipment by acquiring beacon information sent by Bluetooth beacons around the equipment.
The microcontroller of the terminal equipment is used for triggering the wake-up by the external timer when the terminal equipment actively transmits the beacon information to the gateway equipment, and actively waking up the Bluetooth module after the wake-up; when the gateway equipment actively acquires the beacon information around the terminal equipment, the gateway equipment is actively awakened by the wireless module, and after the gateway equipment is awakened, a request for acquiring the beacon information is sent to the Bluetooth module to awaken the Bluetooth module.
And the wireless module is used for actively waking up the microcontroller when detecting that the effective preamble exists in the air, resetting the next wake-up time and reentering the sleep state.
The embodiment discloses a system, when a terminal device moves in a positioning area, capable of realizing that the terminal device automatically triggers a reporting mechanism at intervals, and actively reports beacon information acquired by a Bluetooth module of the terminal device to a microcontroller. Specific:
When the terminal equipment moves in the positioning area, the reporting mechanism is automatically triggered at intervals, when the equipment needs to actively report the current beacon information and the current position, an external timer triggers a microcontroller which wakes up the terminal equipment, the microcontroller actively wakes up a BLE (Bluetooth) module to start scanning, the beacon information sent by surrounding Bluetooth beacons is acquired, the acquired beacon information is returned to an internal buffer area of the microcontroller through a serial peripheral, and the BLE module reenters a low-power-consumption sleep state.
The gateway device of the system disclosed in this embodiment may also actively acquire beacon information sent by bluetooth beacons around the terminal device, and the specific process is as follows:
When the gateway equipment actively acquires beacon information around the equipment, the gateway equipment uses the LoRa module to send a long preamble, the LoRa module of the terminal equipment is in a sleep period awakening state, when the LoRa module of the terminal equipment reaches an awakening interval, the gateway equipment actively awakens to detect an air preamble, when the existence of an effective preamble in the air is detected, the next awakening time is reset to be two code element transmission time, and then the gateway equipment reenters the sleep state with low power consumption.
When the two code element time is up, the LoRa actively wakes up the microcontroller, and sends a request for acquiring the beacon information to the Bluetooth module through the serial peripheral after the microcontroller wakes up, when the Bluetooth module acquires the request, the Bluetooth module wakes up the Bluetooth module and scans the surrounding beacon information, and after the acquisition is completed, the beacon information is returned to the microcontroller and enters a low-power-consumption dormant state again.
The microcontroller of the terminal device disclosed in this embodiment is configured to package the beacon information when the beacon information is acquired, wake up the wireless module through the serial peripheral interface, send the package information to the gateway device through the wireless module, and then the wireless module enters a sleep state with low power consumption.
The gateway device disclosed in this embodiment is configured to determine, after receiving the beacon information, a longitude and latitude corresponding to the beacon information, and determine positioning information of the terminal device according to the longitude and latitude and the beacon information. Specific:
And the gateway equipment is used for acquiring the longitude and latitude corresponding to the beacon information from the longitude and latitude database.
The terminal device may acquire only one beacon information or may acquire a plurality of beacon information, and the terminal device transmits all the beacon information to the gateway device. So that the gateway device can acquire the beacon information or beacon information.
The beacon information sent by the Bluetooth beacon comprises a signal incidence angle and signal intensity;
Gateway equipment, which is used for determining each position information of the terminal equipment according to each beacon information and the longitude and latitude corresponding to the beacon information; when only one piece of beacon information is acquired, adding the position information of the terminal equipment and the longitude and latitude corresponding to the beacon information to acquire the positioning information of the terminal equipment; when a plurality of beacon information is acquired, a plurality of position information of the terminal equipment is placed in a coordinate system constructed by taking longitude and latitude corresponding to one of the beacon information as an origin, a plurality of position coordinates of the terminal equipment are acquired, and coordinates of points with the same distance as each position coordinate are calculated; and adding the coordinates of the point and the longitude and latitude of the origin of the coordinate system where the coordinates are located to obtain the positioning information of the terminal equipment.
The gateway equipment determines the position information of the terminal equipment according to the beacon information and the longitude and latitude corresponding to the beacon information, and the process is as follows:
Determining a signal intensity distance according to the signal intensity; establishing a coordinate system by taking longitude and latitude corresponding to the beacon information as an origin; forming a right triangle by the terminal equipment and the origin and coordinate axes of the coordinate system; and determining the position information of the terminal equipment according to the signal intensity distance, the signal incidence angle and the sine and cosine theorem of the triangle.
The gateway device calculates the coordinates of the same point as each position coordinate distance as follows:
When two beacon information is acquired, calculating to acquire two position coordinates, and averaging the two position coordinates to acquire the coordinates of the point with the same distance as each position coordinate;
When the obtained beacon information is more than or equal to three beacon information, three position coordinates are selected from all the obtained position coordinates, and according to the three position coordinates, the center coordinates of an inscribed circle of which the three position coordinates form a triangle are obtained through calculation, wherein the center coordinates are coordinates of points with the same distance with each position coordinate.
As shown in fig. 1, taking the example of acquiring the beacon information sent by the bluetooth beacon a, the process of determining the location information of the terminal device by the gateway device according to the beacon information and the latitude and longitude corresponding to the beacon information is described:
determining the distance between the terminal equipment and a Bluetooth beacon for transmitting the beacon information through signal intensity, wherein the distance is called as signal intensity distance for short; establishing a coordinate system by taking a Bluetooth beacon A as an origin; assuming that the position information of the terminal equipment is (X4, Y4), the vertical distance between the terminal equipment and the Y axis of the coordinate system is X4, the vertical distance between the terminal equipment and the X axis of the coordinate system is Y4, the terminal equipment is connected with the origin of the coordinate system, and a perpendicular line is drawn to the Y axis through the terminal equipment, so that a right triangle can be obtained, and the angle a between the hypotenuse of the right triangle and the Y axis can be known through the signal incidence angle, wherein the angle a=90° -the signal incidence angle, and the X4 and the Y4 can be obtained through the sine theorem and the cosine theorem of the triangle: x4=sin < a > Z, y4=cos < a > Z; z is the signal strength distance, so: x4=sin × (90 ° -signal incidence angle) signal intensity distance; y4=cos # (90 ° -signal incidence angle) signal intensity distance, so the position information (X4, Y4) of the terminal device can be obtained according to the signal intensity distance, the signal incidence angle, and the sine and cosine theorem of the triangle.
When the gateway device acquires only one piece of beacon information, the location information (X4, Y4) of the terminal device determined by the beacon information is added to the longitude and latitude corresponding to the beacon information, and the location information of the terminal device can be obtained.
When the gateway equipment acquires a plurality of beacon information, constructing a plurality of coordinate systems by taking longitude and latitude corresponding to each beacon information as an origin, calculating and acquiring the position information of the terminal equipment in each coordinate system according to each beacon information, unifying all the position information into the coordinate system constructed by taking the longitude and latitude corresponding to one of the beacon information as the origin, and acquiring the position coordinate of each position information in the coordinate system; when the gateway equipment acquires two beacon information, two position coordinates are correspondingly acquired, the two position coordinates are averaged to acquire the coordinates of a point with the same distance as that of each position coordinate, and the coordinates of the point are added with the longitude and latitude of the origin of a coordinate system where the coordinates are positioned to acquire positioning information of the terminal equipment; when the gateway equipment obtains three or more beacon information, three or more position coordinates are correspondingly obtained, three position coordinates are selected from all the position coordinates, the circle center coordinates of an inscribed circle of which the three position coordinates form a triangle are obtained through calculation according to the three position coordinates, the circle center coordinates are coordinates of points with the same distance as each position coordinate, and the coordinates of the points are added with the longitude and latitude of the origin of a coordinate system where the coordinates are located, so that positioning information of the terminal equipment is obtained.
In order to simplify the calculation amount, when the gateway device acquires a plurality of beacon information, the gateway device determines circles which respectively take longitude and latitude corresponding to the beacon information as circle centers and take signal strength distances as radiuses; when the gateway equipment acquires two beacon information, judging whether two constructed circles have an intersection point or two intersection points, and when judging that the two circles have the intersection point, calculating to acquire the position information of the terminal equipment by using one of the beacon information, and adding the position information and longitude and latitude corresponding to the beacon information to acquire the positioning information of the terminal equipment; when the gateway equipment acquires the beacon information which is more than or equal to three, judging whether a plurality of circles constructed have a common intersection point, when the common intersection point exists, calculating and acquiring the position information of the terminal equipment by using one of the beacon information, and adding the position information and longitude and latitude corresponding to the beacon information to acquire the positioning information of the terminal equipment.
The embodiment discloses a system which combines two low-power consumption technologies of LoRa and Bluetooth, and enables the power consumption of the whole system to reach a lowest balance state by continuously switching the low-power consumption states; through longitude and latitude database management, beacon positions can be continuously enriched and optimized in the area, so that the most accurate positioning effect can be achieved in the minimum number of beacons in the whole area, and cm errors can be realized in theory according to the bluetooth beacons.
The embodiment discloses a system, which does not need to rely on network base station positioning and can accurately position in places with severe environments or less coverage of base stations.
Example 2
In this embodiment, a low power consumption wireless transmission and positioning method is disclosed, including:
sending beacon information to a Bluetooth module of the terminal equipment through a Bluetooth beacon;
When the Bluetooth module of the terminal equipment is awakened, acquiring beacon information, sending the beacon information to the microcontroller, completing the sending, and entering a dormant state;
when the microcontroller of the terminal equipment acquires the beacon information, waking up the wireless module, transmitting the beacon information to the gateway equipment through the wireless module, and enabling the wireless module to enter a dormant state after the transmission is completed;
after receiving the beacon information, the gateway equipment determines the longitude and latitude corresponding to the beacon information, and determines the positioning information of the terminal equipment according to the longitude and latitude and the beacon information.
Example 3
In this embodiment, an electronic device is disclosed that includes a memory and a processor, and computer instructions stored on the memory and running on the processor, which when executed by the processor, perform the steps of a low power wireless transmission and positioning method disclosed in embodiment 1.
Example 4
In this embodiment, a computer readable storage medium is disclosed for storing computer instructions that, when executed by a processor, perform the steps of a low power wireless transmission and positioning method disclosed in embodiment 1.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (10)
1. A low power wireless transmission and positioning system, comprising:
The Bluetooth beacon is used for sending beacon information to a Bluetooth module of the terminal equipment;
The Bluetooth module of the terminal equipment is used for acquiring beacon information after being awakened, sending the beacon information to the microcontroller, completing the sending and entering a dormant state;
the microcontroller of the terminal equipment is used for waking up the wireless module when the beacon information is acquired, transmitting the beacon information to the gateway equipment through the wireless module, and enabling the wireless module to enter a dormant state after the transmission is completed;
And the gateway equipment is used for determining the longitude and latitude corresponding to the beacon information after receiving the beacon information and determining the positioning information of the terminal equipment according to the longitude and latitude and the beacon information.
2. The low power consumption wireless transmission and positioning system as claimed in claim 1, wherein the microcontroller of the terminal device is configured to trigger wake-up by an external timer when the terminal device actively transmits beacon information to the gateway device, and actively wake-up the bluetooth module after wake-up; when the gateway equipment actively acquires the beacon information around the terminal equipment, the gateway equipment is actively awakened by the wireless module, and after the gateway equipment is awakened, a request for acquiring the beacon information is sent to the Bluetooth module to awaken the Bluetooth module.
3. The low power wireless transmission and positioning system of claim 1 wherein the wireless module is configured to, when the gateway device actively acquires beacon information around the terminal device, stay in a sleep cycle awake state, when an awake interval is reached, actively wake up to detect an over-the-air preamble, and actively wake up the microcontroller, and when an active preamble is detected to exist over-the-air, reset a next awake time, and reenter the sleep state.
4. The low power wireless transmission and positioning system of claim 1 wherein the beacon information transmitted by the bluetooth beacon includes a signal incidence angle and a signal strength;
Gateway equipment, which is used for determining each position information of the terminal equipment according to each beacon information and the longitude and latitude corresponding to the beacon information; when only one piece of beacon information is acquired, adding the position information of the terminal equipment and the longitude and latitude corresponding to the beacon information to acquire the positioning information of the terminal equipment; when a plurality of beacon information is acquired, a plurality of position information of the terminal equipment is placed in a coordinate system constructed by taking longitude and latitude corresponding to one of the beacon information as an origin, a plurality of position coordinates of the terminal equipment are acquired, and coordinates of points with the same distance as each position coordinate are calculated; and adding the coordinates of the point and the longitude and latitude of the origin of the coordinate system where the coordinates are located to obtain the positioning information of the terminal equipment.
5. The low power consumption wireless transmission and positioning system according to claim 4, wherein the gateway device determines the location information of the terminal device according to the beacon information and the latitude and longitude corresponding to the beacon information by:
Determining a signal intensity distance according to the signal intensity; establishing a coordinate system by taking longitude and latitude corresponding to the beacon information as an origin; forming a right triangle by the terminal equipment and the origin and coordinate axes of the coordinate system; and determining the position information of the terminal equipment according to the signal intensity distance, the signal incidence angle and the sine and cosine theorem of the triangle.
6. The low power wireless transmission and positioning system of claim 4 wherein the gateway device calculates the coordinates of points at the same distance from each location coordinate as:
When two beacon information is acquired, calculating to acquire two position coordinates, and averaging the two position coordinates to acquire the coordinates of the point with the same distance as each position coordinate;
When the obtained beacon information is more than or equal to three beacon information, three position coordinates are selected from all the obtained position coordinates, and according to the three position coordinates, the center coordinates of an inscribed circle of which the three position coordinates form a triangle are obtained through calculation, wherein the center coordinates are coordinates of points with the same distance with each position coordinate.
7. The low power consumption wireless transmission and positioning system according to claim 1, wherein the longitude and latitude database is used for storing the longitude and latitude of the bluetooth beacon, and updating the longitude and latitude stored in the longitude and latitude database when the position of the bluetooth beacon changes;
And the gateway equipment is used for acquiring the longitude and latitude corresponding to the beacon information from the longitude and latitude database.
8. The low-power wireless transmission and positioning method is characterized by comprising the following steps:
sending beacon information to a Bluetooth module of the terminal equipment through a Bluetooth beacon;
When the Bluetooth module of the terminal equipment is awakened, acquiring beacon information, sending the beacon information to the microcontroller, completing the sending, and entering a dormant state;
when the microcontroller of the terminal equipment acquires the beacon information, waking up the wireless module, transmitting the beacon information to the gateway equipment through the wireless module, and enabling the wireless module to enter a dormant state after the transmission is completed;
after receiving the beacon information, the gateway equipment determines the longitude and latitude corresponding to the beacon information, and determines the positioning information of the terminal equipment according to the longitude and latitude and the beacon information.
9. An electronic device comprising a memory and a processor, and computer instructions stored on the memory and running on the processor, which when executed by the processor, perform the steps of a low power wireless transmission and positioning method of claim 8.
10. A computer readable storage medium storing computer instructions which, when executed by a processor, perform the steps of a low power wireless transmission and positioning method of claim 8.
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| CN202311802469.2A CN117979415A (en) | 2023-12-25 | 2023-12-25 | Low-power-consumption wireless transmission and positioning system and method |
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