Floor position positioning and marking method

Abstract

The invention discloses a floor position positioning and marking method, which belongs to the technical field of mobile equipment positioning and comprises the following steps: acquiring equipment environment information in real time, preprocessing the equipment environment information and then transmitting the equipment environment information to an online server, and comprehensively analyzing the equipment environment information by the online server to obtain horizontal positioning information of portable WiFi (Wireless Fidelity) equipment; acquiring air pressure information of the current height through an air pressure sensor, acquiring meteorological data of the corresponding position based on the horizontal positioning information, and correcting the air pressure information based on the meteorological data; constructing a linear mapping relation between the air pressure and the height, and obtaining vertical positioning information according to the corrected air pressure information; and based on the horizontal positioning information and the vertical positioning information, determining and marking the floor position of the equipment. According to the method, the GPS, the hotspot equipment, the base station and the IP are fused, the horizontal accurate positioning of the portable WiFi is realized, the vertical height is calibrated by using the barometer, and the positioning accuracy is improved in combination with environmental factor compensation.

Description

Technical Field

[0001] The invention belongs to the technical field of movable device positioning, and in particular relates to a floor position positioning and marking method. Background Art

[0002] A portable WiFi device, also known as a portable WiFi hotspot or mobile WiFi, is a portable device that can provide wireless network access. Portable WiFi devices are small and easy to carry, and can be conveniently used outdoors or when traveling. Most portable WiFi devices support multiple devices to connect at the same time, making it convenient for users to share the network with family or colleagues. They can convert the cellular network (3G / 4G / 5G) on the SIM card into a WiFi signal, so that devices that do not support cellular networks can also access the Internet. They are usually equipped with a rechargeable battery that can provide a long battery life, making them suitable for long-term use when out and about, bringing great convenience to life.

[0003] Since portable WiFi needs to be used in multiple scenarios, by locating portable WiFi devices, users can be provided with more accurate network services and their experience when using mobile networks can be enhanced. The positioning function can also help users find lost portable WiFi devices and reduce property losses. It can assist in indoor positioning and help users find the correct path in complex indoor environments such as shopping malls, airports, and museums. The positioning of portable WiFi devices is not only related to the daily use of individual users, but also to risk assessment and management of stakeholders. For example, dealers predict and avoid inventory risks by analyzing the distribution of equipment. Therefore, there is an urgent need for a floor location positioning and labeling method for portable WiFi. Summary of the invention

[0004] In order to solve the above technical problems, the present invention proposes a method for locating and marking floor positions to solve the problems existing in the above prior art.

[0005] To achieve the above object, the present invention provides a method for locating and marking floor positions, comprising:

[0006] Acquire device environment information in real time, pre-process the device environment information and transmit it to the online server, the online server conducts a comprehensive analysis on the device environment information and obtains the horizontal positioning information of the portable WiFi device;

[0007] Acquire the air pressure information of the current height through the air pressure sensor, obtain the meteorological data of the corresponding position based on the horizontal positioning information, and correct the air pressure information based on the meteorological data; construct a linear mapping relationship between air pressure and height, and obtain vertical positioning information according to the corrected air pressure information;

[0008] The floor location of the equipment is determined and marked based on the horizontal positioning information and the vertical positioning information.

[0009] Optionally, the device environment information includes GPS signal, hotspot information, base station information, and IP address; wherein the hotspot information includes address and signal strength, and the base station information includes area information and mobile base station ID.

[0010] Optionally, the process of preprocessing the device environment information includes: verifying the device environment information, filtering out abnormal values ​​and performing denoising; compressing and encrypting the denoised device environment information and transmitting it to an online server.

[0011] Optionally, the comprehensive analysis process includes: decrypting the received device environment information and splitting it into four categories of information according to the information type, and extracting the coordinate information of the portable WiFi device for each of the four categories of information; acquiring the current position image through a camera, and obtaining the current device scene through image analysis; assigning weights to the four categories of information according to the current device scene, normalizing the coordinate information of the portable WiFi device, and performing weighted operations based on the weights to obtain horizontal positioning information.

[0012] Optionally, the process of obtaining the coordinate information of the portable WiFi device based on the hotspot information includes:

[0013] Based on the relative position of the portable WiFi device and other hotspot devices, at least three data are selected from the hotspot information, and the three hotspot devices corresponding to the three data are extracted to obtain the distances between the portable WiFi device and the three hotspot devices, thereby obtaining a first distance, a second distance, and a third distance. With the hotspot device position as the center and the first distance, the second distance, and the third distance as the radius, circular areas are constructed respectively to determine whether the intersection of the three circular areas is unique. If it is unique, the coordinate information of the intersection is used as the coordinate information of the portable WiFi device. If it is not unique, the positioning error is minimized by the least squares method to obtain the optimal two-dimensional coordinate solution as the coordinate information of the portable WiFi device.

[0014] Optionally, the process of obtaining the first distance, the second distance, and the third distance includes:

[0015] The signal strengths of the three hotspot devices at the preset distances are respectively obtained as reference signal strengths;

[0016] Based on the signal strength corresponding to each of the three hotspot devices, the preset environmental attenuation factor and the reference signal strength, the distances between the three hotspot devices and the portable WiFi device are calculated to obtain a first distance, a second distance and a third distance.

[0017] Optionally, the process of determining the preset environmental attenuation factor includes:

[0018] Under the set environment, the signal strength data and reference signal strength data received by the three hotspot devices at different distances are collected respectively; the linear regression method is used to analyze the collected data to determine the size of the preset environmental attenuation factor, where the set environment refers to an environmental combination composed of different terrains, landforms, obstacle distribution, vegetation coverage, seasons and climates.

[0019] Optionally, the process of determining and marking the equipment floor location includes:

[0020] Based on the horizontal positioning information, the building information of the corresponding position is obtained, and the floor position of the equipment is obtained based on the building information and the vertical positioning information; a virtual building model is constructed based on the building information, the local coordinate system of the virtual building model is matched with the map coordinate system, and the horizontal positioning information and the floor position are marked on the virtual building model to complete the positioning and marking of the floor position.

[0021] Compared with the prior art, the present invention has the following advantages and technical effects:

[0022] The present invention proposes a method for positioning and marking floor positions, which obtains equipment environment information in real time, pre-processes the equipment environment information and transmits it to an online server, the online server performs a comprehensive analysis on the equipment environment information, obtains the horizontal positioning information of the portable WiFi device; obtains the air pressure information of the current height through the air pressure sensor, obtains the meteorological data of the corresponding position based on the horizontal positioning information, and corrects the air pressure information based on the meteorological data; constructs a linear mapping relationship between air pressure and height, and obtains vertical positioning information according to the corrected air pressure information; determines the floor position of the equipment based on the horizontal positioning information and the vertical positioning information and marks it. The present invention performs a comprehensive analysis on the equipment environment information through the online server, and can more accurately obtain the two-dimensional horizontal positioning information of the equipment; constructs a linear mapping relationship between air pressure and height, and provides a reliable method for converting air pressure values ​​into vertical heights. The air pressure information is corrected using meteorological data, which can reduce the influence of environmental factors such as temperature and humidity on air pressure measurement and improve the accuracy of vertical positioning. Combining the horizontal positioning information and the corrected vertical positioning information, the floor position of the equipment can be accurately determined. Compared with other high-precision positioning technologies, such as UWB or LiDAR, the method using air pressure sensors may have lower costs and is suitable for different buildings and multi-story structures, including office buildings, residences, shopping malls, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 The figure is a flow chart of a method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0027] Embodiment 1

[0028] like Figure 1 As shown, this embodiment provides a method for locating and marking floor positions, including:

[0029] Acquire device environment information in real time, pre-process the device environment information and transmit it to the online server. The online server conducts a comprehensive analysis of the device environment information to obtain the horizontal positioning information of the portable WiFi device;

[0030] Specifically, the portable WiFi device is equipped with a barometer and a camera;

[0031] In some specific examples, the device environment information includes GPS signal, hotspot information, base station information, and IP address; the hotspot information includes address and signal strength, and the base station information includes area information and mobile base station ID.

[0032] In some specific examples, the process of preprocessing the device environment information includes: verifying the device environment information, filtering out abnormal values ​​and performing denoising; compressing and encrypting the denoised device environment information and transmitting it to an online server.

[0033] In some specific instances, the comprehensive analysis process includes: decrypting the received device environment information and splitting it into four categories of information according to the information type, and extracting the coordinate information of the portable WiFi device from the four categories of information; acquiring the current position image through a camera, and obtaining the current device scene through image analysis; assigning weights to the four categories of information according to the current device scene, normalizing the coordinate information of the portable WiFi device, and performing weighted operations based on the weights to obtain horizontal positioning information.

[0034] In some specific examples, the process of obtaining the coordinate information of the portable WiFi device based on the hotspot information includes:

[0035] Based on the relative position of the portable WiFi device and other hotspot devices, at least three data are selected from the hotspot information, and the three hotspot devices corresponding to the three data are extracted to obtain the distances between the portable WiFi device and the three hotspot devices, thereby obtaining the first distance, the second distance, and the third distance. With the hotspot device position as the center and the first distance, the second distance, and the third distance as the radius, circular areas are constructed respectively to determine whether the intersection of the three circular areas is unique. If so, the coordinate information of the intersection is used as the coordinate information of the portable WiFi device. If not, the positioning error is minimized by the least squares method to obtain the optimal two-dimensional coordinate solution as the coordinate information of the portable WiFi device.

[0036] In some specific examples, the process of obtaining the first distance, the second distance, and the third distance includes:

[0037] The signal strengths of the three hotspot devices at the preset distances are respectively obtained as reference signal strengths;

[0038] Based on the signal strength corresponding to each of the three hotspot devices, the preset environmental attenuation factor and the reference signal strength, the distances between the three hotspot devices and the portable WiFi device are calculated to obtain a first distance, a second distance and a third distance.

[0039] In some specific examples, the process of determining the preset environmental attenuation factor includes:

[0040] Under the set environment, the signal strength data and reference signal strength data received by the three hotspot devices at different distances are collected respectively; the linear regression method is used to analyze the collected data to determine the size of the preset environmental attenuation factor, where the set environment refers to an environmental combination composed of different terrains, landforms, obstacle distribution, vegetation coverage, seasons and climates.

[0041] The air pressure information of the current altitude is obtained through the air pressure sensor, the meteorological data of the corresponding position is obtained based on the horizontal positioning information, and the air pressure information is corrected based on the meteorological data; a linear mapping relationship between air pressure and altitude is constructed, and vertical positioning information is obtained based on the corrected air pressure information;

[0042] The equipment floor location is determined and marked based on the horizontal and vertical positioning information.

[0043] In some specific examples, the process of determining and marking the equipment floor location includes:

[0044] The building information of the corresponding position is obtained based on the horizontal positioning information, and the floor position of the equipment is obtained based on the building information and the vertical positioning information. A virtual building model is constructed based on the building information, the local coordinate system of the virtual building model is matched with the map coordinate system, and the horizontal positioning information and the floor position are marked on the virtual building model to complete the positioning and marking of the floor position.

[0045] Specifically, when the vertical height and building information are known, marking the location of the portable device generally includes the following steps:

[0046] Choose an appropriate geographic coordinate system as a reference to ensure that all location data is based on the same coordinate system.

[0047] Collect equipment location data: including plane position and vertical height;

[0048] Combine the vertical height of the device with the floor information of the building. If the floor on which the device is located is known, the floor number can be used directly. If only the altitude is available, it may be necessary to match it with the vertical section of the building to determine the specific floor.

[0049] Use geographic information system (GIS) software or online map services (such as Google Maps, Amap) to mark the plane position and vertical height of the equipment on the map. 3D visualization: In 3D modeling software, mark the location of the equipment in the 3D model of the building according to the vertical height and floor information of the equipment. Display the location information of the equipment on the user interface, which can be a mark on a 2D map or a point in 3D space. When viewing a specific floor, click the corresponding position on the page to link to the 3D model display.

[0050] When marking location information, user privacy protection requirements should be taken into consideration to ensure that user sensitive information is not leaked.

[0051] This embodiment uses an online server to conduct a comprehensive analysis of the device environment information, and can more accurately obtain the two-dimensional horizontal positioning information of the device; construct a linear mapping relationship between air pressure and altitude, provide a reliable method for converting air pressure values ​​into vertical heights, and use meteorological data to correct air pressure information, which can reduce the impact of environmental factors such as temperature and humidity on air pressure measurement and improve the accuracy of vertical positioning. Combining the horizontal positioning information and the corrected vertical positioning information, the floor position of the device can be accurately determined. Compared with other high-precision positioning technologies, such as UWB or lidar, the method using air pressure sensors may have lower costs and is suitable for different buildings and multi-story structures, including office buildings, residences, shopping malls, etc.

[0052] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for locating and marking floor positions, characterized in that: The following steps are involved: Acquire device environment information in real time, pre-process the device environment information and transmit it to the online server, the online server conducts a comprehensive analysis on the device environment information and obtains the horizontal positioning information of the portable WiFi device; The device environment information includes GPS signal, hotspot information, base station information, and IP address; The hotspot information includes address and signal strength, and the base station information includes area information and mobile base station ID; The comprehensive analysis process includes: decrypting the received device environment information and dividing it into four categories of information according to the information type, respectively extracting the coordinate information of the portable WiFi device from the four categories of information; obtaining the current position image through the camera, and obtaining the current device scene through image analysis; assigning weights to the four categories of information according to the current device scene, normalizing the coordinate information of the portable WiFi device, and performing weighted calculation based on the weights to obtain horizontal positioning information; Acquire the air pressure information of the current height through the air pressure sensor, obtain the meteorological data of the corresponding position based on the horizontal positioning information, and correct the air pressure information based on the meteorological data; construct a linear mapping relationship between air pressure and height, and obtain vertical positioning information according to the corrected air pressure information; The floor location of the equipment is determined and marked based on the horizontal positioning information and the vertical positioning information.

2. The method for locating and marking floor positions according to claim 1, characterized in that: The process of preprocessing the device environment information includes: verifying the device environment information, filtering out abnormal values ​​and performing denoising; compressing and encrypting the denoised device environment information and transmitting it to an online server.

3. The method for locating and marking floor positions according to claim 1, characterized in that: The process of obtaining the coordinate information of the portable WiFi device based on the hotspot information includes: Based on the relative position of the portable WiFi device and other hotspot devices, at least three data are selected from the hotspot information, and the three hotspot devices corresponding to the three data are extracted to obtain the distances between the portable WiFi device and the three hotspot devices, thereby obtaining a first distance, a second distance, and a third distance. With the hotspot device position as the center and the first distance, the second distance, and the third distance as the radius, circular areas are constructed respectively to determine whether the intersection of the three circular areas is unique. If it is unique, the coordinate information of the intersection is used as the coordinate information of the portable WiFi device. If it is not unique, the positioning error is minimized by the least squares method to obtain the optimal two-dimensional coordinate solution as the coordinate information of the portable WiFi device.

4. The method for locating and marking floor positions according to claim 3, characterized in that: The process of obtaining the first distance, the second distance, and the third distance includes: The signal strengths of the three hotspot devices at the preset distances are respectively obtained as reference signal strengths; Based on the signal strength corresponding to each of the three hotspot devices, the preset environmental attenuation factor and the reference signal strength, the distances between the three hotspot devices and the portable WiFi device are calculated to obtain a first distance, a second distance and a third distance.

5. The method for locating and marking floor positions according to claim 4, characterized in that: The process of determining the preset environmental attenuation factor includes: Under the set environment, the signal strength data and reference signal strength data received by the three hotspot devices at different distances are collected respectively; the linear regression method is used to analyze the collected data to determine the size of the preset environmental attenuation factor, where the set environment refers to an environmental combination composed of different terrains, landforms, obstacle distribution, vegetation coverage, seasons and climates.

6. The method for locating and marking floor positions according to claim 1, characterized in that: The process of determining and marking the equipment floor location includes: Based on the horizontal positioning information, the building information of the corresponding position is obtained, and the floor position of the equipment is obtained based on the building information and the vertical positioning information; a virtual building model is constructed based on the building information, the local coordinate system of the virtual building model is matched with the map coordinate system, and the horizontal positioning information and the floor position are marked on the virtual building model to complete the positioning and marking of the floor position.

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