Multi-floor personnel real-time positioning system based on UWB positioning

Abstract

The invention discloses a multi-floor personnel real-time positioning system based on UWB positioning, and belongs to the technical field of UWB positioning, and the system comprises a UWB base station module, a UWB label module, a central processor module, a positioning engine module, and a monitoring display module. In combination with efficient processing of the central processing unit module and the positioning engine module, real-time and accurate monitoring of positions of people in the multi-storey building is realized, electronic maps are integrated, position coordinate data are mapped to planar graphs of corresponding floors, and the positions of the people are displayed in real time in a point form. And historical track playback, electronic fence setting and alarm notification functions are supported, so that the efficiency, accuracy and real-time performance are greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of UWB positioning, and specifically refers to a multi-floor personnel real-time positioning system based on UWB positioning. Background Art

[0002] With the development of IoT technology and big data processing capabilities, data exchange, processing and display between devices have become more convenient and efficient;

[0003] However, the existing multi-layer real-time positioning system still has certain defects. The existing wireless positioning technologies used for multi-layer real-time positioning, such as Wi-Fi and Bluetooth, may be affected by signal attenuation, reflection and interference in a multi-floor environment, resulting in large variations in positioning accuracy between different floors. The ability of wireless signals to penetrate building materials such as concrete and metal is limited, which may lead to poor positioning effects between floors or behind thicker walls, or even inability to perform effective positioning. Some positioning technologies can only provide two-dimensional plane coordinates, but the acquisition of vertical position information is not accurate, and additional technical means are required to determine the specific floor where the user is located. The real-time performance is poor, especially when processing a large number of concurrent requests. The system's response speed and data update frequency may not meet the needs of efficient personnel management. Therefore, a multi-floor personnel real-time positioning system based on UWB positioning is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-floor personnel real-time positioning system based on UWB positioning to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-floor personnel real-time positioning system based on UWB positioning, comprising a UWB base station module, a UWB tag module, a central processing unit module, a positioning engine module, and a monitoring display module;

[0006] The UWB base station module is deployed at key locations on each floor, such as entrances and exits, elevators, corridors, etc., and is responsible for transmitting pulse signals and conducting two-way communication with tags;

[0007] The UWB tag module is worn by a person and receives and reflects the pulse signal sent by the base station in real time;

[0008] The central processing unit module processes the signal data received by the base station based on the round-trip time to accurately calculate the location information of the tag;

[0009] The positioning engine module collects data from all base stations and displays the specific locations of people on each floor in real time;

[0010] Among them, the monitoring display module provides an intuitive interactive interface for personnel to view the current location, and also supports historical trajectory playback, electronic fence setting, and alarm notification functions.

[0011] Among them, the UWB base station module determines the preliminary layout points of the base station according to the positioning accuracy requirements, signal coverage range and building structure characteristics, and installs and fixes the UWB base station equipment at the selected location according to the preset network plan to ensure that there is no obstruction between the base stations and the signal transmission is stable.

[0012] Among them, after the UWB base station module is installed, it measures and accurately determines the actual geographical coordinates of each base station, transmits the measured base station coordinate data to the central processor, sets the base station's operating frequency, transmission power, pulse repetition period and related parameters, turns on the base station, and starts sending ultra-wideband pulse signals at a preset frequency. It also monitors the base station's working status and signal quality in real time, determines the deployment location of the base station based on positioning accuracy, signal coverage and building structure characteristics, and ensures unobstructed and stable signal transmission between base stations, thereby improving the accuracy and reliability of the positioning system.

[0013] Among them, the UWB tag module is worn by the person, and the detailed information of the wearer, including name, department, and position, is imported into the central manager. The unique identifier (ID) reading interface of the tag is opened, and the ID number of each tag is automatically obtained by scanning. The ID of each tag is bound to the information of the corresponding person to ensure that the system can accurately identify the identity of the individual carrying the tag. After the tag is worn, the tag will automatically enter the receiving mode and start monitoring the UWB pulse signals emitted by the surrounding base stations. When the base station sends a signal, the tag will reflect it back after receiving the signal, so that the base station can record the time difference between the round trip signal. The binding of the tag and the wearer's information enables the system to accurately identify the individual identity, which is of great significance for personnel management and security monitoring.

[0014] Among them, when the pulse signal emitted by the UWB base station reaches the tag, the tag immediately reflects the signal back. After the base station receives the reflected signal, it uses the internal high-precision clock to accurately measure the round-trip time of the signal from transmission to reception, stores the measured time data locally, and sends it to the positioning engine. The central processor can quickly process the signal data received by the base station to achieve accurate positioning, thereby improving the response speed and efficiency of the system.

[0015] Among them, the positioning engine module receives the data transmitted by the central processing unit module, and calculates the straight-line distance between the base station and the tag through the formula d=c*TOF / 2, where c represents the speed of light, d represents the straight-line distance between the base station and the tag, and TOF represents the round-trip time from transmission to reception. The algorithm is used to accurately calculate the location information of the tag.

[0016] Among them, the positioning engine module obtains the optimal tag position through TOF. After the positioning engine completes the position calculation, it transmits the precise three-dimensional coordinate information of the tag in the form of a data packet in real time to the central management system. The central management system parses the received data packet and updates the location information of the corresponding tag in the database.

[0017] Among them, the monitoring display module integrates an electronic map to ensure that the map covers all floor plans, and performs mapping conversion of the three-dimensional coordinate system on each floor, maps the received position coordinate data to the corresponding electronic map, represents the personnel position in the form of points, continuously refreshes and updates the position mark of the personnel on the electronic map, realizes the real-time visualization of the personnel distribution and dynamic trajectory, and detects in real time in the background whether the personnel enters or leaves the designated area according to the preset electronic fence area. When the regional alarm condition is triggered, the system automatically issues an alarm prompt and highlights the involved areas and personnel on the map. The personnel position is intuitively displayed through the electronic map, realizing the real-time visualization of the personnel distribution and dynamic trajectory. According to the preset electronic fence area, the personnel position is monitored in real time, and an alarm is automatically issued when the alarm condition is triggered, thereby improving the intelligence level of security monitoring.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention adopts pulse communication through UWB technology, the signal transmission time is short and the energy is concentrated, and it has lower power consumption characteristics compared with continuous wave communication, so that the tag device can achieve long-term stable operation and longer service life;

[0020] 2. The present invention realizes two-way communication between the tag and the base station, updates the personnel location information in real time, and displays it in an intuitive way in the monitoring display module, so that managers can understand the distribution and dynamic trajectory of personnel on each floor at any time;

[0021] 3. The in-depth mining and analysis of historical trajectory data by the present invention can provide management with rich data analysis reports and support scientific and intelligent decision-making, such as optimizing resource allocation, improving work efficiency, and preventing safety hazards;

[0022] 4. The present invention uses UWB signals with a very wide frequency band, which can effectively suppress multipath effects and co-frequency interference in complex electromagnetic environments, ensuring stable and accurate positioning in a multi-floor environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a multi-floor personnel real-time positioning system based on UWB positioning according to the present invention;

[0024] Figure 2This is a flow chart of the operation of a multi-floor personnel real-time positioning system based on UWB positioning from outdoor to indoor;

[0025] Figure 3 The present invention is a UWB positioning flow chart of a multi-floor personnel real-time positioning system based on UWB positioning. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example

[0028] See also Figure 1-Figure 3 As shown, the present invention provides a technical solution: including a UWB base station module, a UWB tag module, a central processing unit module, a positioning engine module, and a monitoring display module;

[0029] The UWB base station module is deployed at key locations on each floor, such as entrances and exits, elevators, corridors, etc., and is responsible for transmitting pulse signals and conducting two-way communication with tags;

[0030] The UWB tag module is worn by a person and receives and reflects the pulse signal sent by the base station in real time;

[0031] The central processing unit module processes the signal data received by the base station based on the round-trip time to accurately calculate the location information of the tag;

[0032] The positioning engine module collects data from all base stations and displays the specific locations of people on each floor in real time;

[0033] Among them, the monitoring display module provides an intuitive interactive interface for personnel to view the current location, and also supports historical trajectory playback, electronic fence setting, and alarm notification functions.

[0034] Among them, the UWB base station module determines the preliminary layout points of the base station according to the positioning accuracy requirements, signal coverage range and building structure characteristics, and installs and fixes the UWB base station equipment at the selected location according to the preset network plan to ensure that there is no obstruction between the base stations and the signal transmission is stable.

[0035] Among them, after the UWB base station module is installed, it measures and accurately determines the actual geographical coordinates of each base station, transmits the measured base station coordinate data to the central processor, sets the base station's operating frequency, transmission power, pulse repetition period and related parameters, turns on the base station, and starts sending ultra-wideband pulse signals at a preset frequency. It also monitors the base station's working status and signal quality in real time, determines the deployment location of the base station based on positioning accuracy, signal coverage and building structure characteristics, and ensures unobstructed and stable signal transmission between base stations, thereby improving the accuracy and reliability of the positioning system.

[0036] Among them, the UWB tag module is worn by the person, and the detailed information of the wearer, including name, department, and position, is imported into the central manager. The unique identifier (ID) reading interface of the tag is opened, and the ID number of each tag is automatically obtained by scanning. The ID of each tag is bound to the information of the corresponding person to ensure that the system can accurately identify the identity of the individual carrying the tag. After the tag is worn, the tag will automatically enter the receiving mode and start monitoring the UWB pulse signals emitted by the surrounding base stations. When the base station sends a signal, the tag will reflect it back after receiving the signal, so that the base station can record the time difference between the round trip signal. The binding of the tag and the wearer's information enables the system to accurately identify the individual identity, which is of great significance for personnel management and security monitoring.

[0037] Among them, when the pulse signal emitted by the UWB base station reaches the tag, the tag immediately reflects the signal back. After the base station receives the reflected signal, it uses the internal high-precision clock to accurately measure the round-trip time of the signal from transmission to reception, stores the measured time data locally, and sends it to the positioning engine. The central processor can quickly process the signal data received by the base station to achieve accurate positioning, thereby improving the response speed and efficiency of the system.

[0038] Among them, the positioning engine module receives the data transmitted by the central processing unit module, and calculates the straight-line distance between the base station and the tag through the formula d=c*TOF / 2, where c represents the speed of light, d represents the straight-line distance between the base station and the tag, and TOF represents the round-trip time from transmission to reception. The algorithm is used to accurately calculate the location information of the tag.

[0039] Among them, the positioning engine module obtains the optimal tag position through TOF. After the positioning engine completes the position calculation, it transmits the precise three-dimensional coordinate information of the tag in the form of a data packet in real time to the central management system. The central management system parses the received data packet and updates the location information of the corresponding tag in the database.

[0040] Among them, the monitoring display module integrates an electronic map to ensure that the map covers all floor plans, and performs mapping conversion of the three-dimensional coordinate system on each floor, maps the received position coordinate data to the corresponding electronic map, represents the personnel position in the form of points, continuously refreshes and updates the position mark of the personnel on the electronic map, realizes the real-time visualization of the personnel distribution and dynamic trajectory, and detects in real time in the background whether the personnel enters or leaves the designated area according to the preset electronic fence area. When the regional alarm condition is triggered, the system automatically issues an alarm prompt and highlights the involved areas and personnel on the map. The personnel position is intuitively displayed through the electronic map, realizing the real-time visualization of the personnel distribution and dynamic trajectory. According to the preset electronic fence area, the personnel position is monitored in real time, and an alarm is automatically issued when the alarm condition is triggered, thereby improving the intelligence level of security monitoring.

[0041] In this example, specifically: the UWB tag module is worn by the person, and the detailed information of the wearer is imported into the central manager, including name, department, and position, and the unique identifier (ID) reading interface of the tag is opened, and the ID number of each tag is automatically obtained by scanning, and the ID of each tag is bound to the information of the corresponding person to ensure that the system can accurately identify the identity of the individual carrying the tag. After the tag is worn, the tag will automatically enter the receiving mode and start monitoring the UWB pulse signals emitted by the surrounding base stations. When the base station sends a signal, the tag will reflect it back after receiving the signal, so that the base station can record the time difference between the round trip signal. The binding of the tag and the wearer's information enables the system to accurately identify the individual identity, which is of great significance for personnel management and security monitoring.

[0042] In this example, specifically: the positioning engine module receives the data transmitted by the central processing unit module, calculates the straight-line distance between the base station and the tag by using the formula d=c*TOF / 2, where c represents the speed of light, d represents the straight-line distance between the base station and the tag, and TOF represents the round-trip time from transmission to reception. The location information of the tag is accurately calculated by the algorithm, and the positioning engine module obtains the optimal tag position through TOF. After the positioning engine completes the position calculation, it transmits the precise three-dimensional coordinate information of the tag in the form of a data packet in real time to the central management system. The central management system parses the received data packet and updates the location information of the corresponding tag in the database.

[0043] Working principle: According to the building structure and positioning requirements, UWB base stations are deployed at key locations on each floor, and precise coordinate measurement, parameter setting and signal quality monitoring are performed. A unique UWB tag is assigned and bound to each person who needs to be positioned. The UWB base station sends an ultra-wideband pulse signal at a preset frequency. The UWB tag worn on the person receives the signal and immediately reflects it back. The base station calculates the distance information by recording the round-trip time difference of the signal.

[0044] The central processor module receives the time data measured by each base station and uses the speed of light multiplied by the round-trip time to get a preliminary distance estimate. The positioning engine module uses a multi-point positioning algorithm and combines the distance information of multiple base stations to accurately calculate the three-dimensional spatial position of the tag. After the positioning engine completes the position solution, it transmits the result to the central management system in real time, and the central management system updates the location information of the corresponding tag in the database. The monitoring and display module maps this location information to an electronic map to form an intuitive personnel distribution map and dynamic trajectory. The monitoring and display module has an electronic fence function. When a person enters or leaves a designated area, the system automatically triggers an alarm and highlights it on the map.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0046] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A multi-floor personnel real-time positioning system based on UWB positioning, characterized by: Including UWB base station module, UWB tag module, central processing unit module, positioning engine module, monitoring display module; The UWB base station module is deployed at key locations on each floor, such as entrances and exits, elevators, corridors, etc., and is responsible for transmitting pulse signals and conducting two-way communication with tags; The UWB tag module is worn by a person and receives and reflects the pulse signal sent by the base station in real time; The central processing unit module processes the signal data received by the base station based on the round-trip time to accurately calculate the location information of the tag; The positioning engine module collects data from all base stations and displays the specific locations of people on each floor in real time; Among them, the monitoring display module provides an intuitive interactive interface for personnel to view the current location, and also supports historical trajectory playback, electronic fence setting, and alarm notification functions.

2. A multi-floor personnel real-time positioning system based on UWB positioning according to claim 1, characterized in that: The UWB base station module determines the preliminary layout points of the base stations according to the positioning accuracy requirements, signal coverage range and building structure characteristics, and installs and fixes the UWB base station equipment at the selected location according to the preset network plan to ensure that there is no obstruction between the base stations and the signal transmission is stable.

3. The multi-floor personnel real-time positioning system based on UWB positioning according to claim 1 is characterized by: After the UWB base station module is installed, it measures and accurately determines the actual geographic coordinates of each base station, transmits the measured base station coordinate data to the central processor, sets the base station's operating frequency, transmission power, pulse repetition period and other related parameters, turns on the base station, starts sending ultra-wideband pulse signals at a preset frequency, and monitors the base station's operating status and signal quality in real time.

4. The multi-floor personnel real-time positioning system based on UWB positioning according to claim 1 is characterized by: The UWB tag module is worn by the person, and the detailed information of the wearer, including name, department, and position, is imported into the central manager. The unique identifier (ID) reading interface of the tag is opened, and the ID number of each tag is automatically obtained by scanning. The ID of each tag is bound to the information of the corresponding person to ensure that the system can accurately identify the identity of the individual carrying the tag. After the tag is worn, the tag will automatically enter the receiving mode and start monitoring the UWB pulse signals emitted by the surrounding base stations. When the base station sends a signal, the tag will reflect it back after receiving the signal, so that the base station can record the time difference of the round-trip signal.

5. The multi-floor personnel real-time positioning system based on UWB positioning according to claim 1 is characterized by: When the pulse signal emitted by the UWB base station reaches the tag, the tag immediately reflects the signal back. After receiving the reflected signal, the base station uses the internal high-precision clock to accurately measure the round-trip time of the signal from transmission to reception, stores the measured time data locally, and sends it to the positioning engine.

6. The multi-floor personnel real-time positioning system based on UWB positioning according to claim 1 is characterized by: The positioning engine module receives the data transmitted by the central processing unit module and calculates the straight-line distance between the base station and the tag through the formula d=c*TOF / 2, where c represents the speed of light, d represents the straight-line distance between the base station and the tag, and TOF represents the round-trip time from transmission to reception. The algorithm is used to accurately calculate the location information of the tag.

7. The multi-floor personnel real-time positioning system based on UWB positioning according to claim 1 is characterized by: The positioning engine module obtains the optimal tag position through TOF. After the positioning engine completes the position calculation, it transmits the precise three-dimensional coordinate information of the tag in the form of a data packet in real time to the central management system. The central management system parses the received data packet and updates the location information of the corresponding tag in the database.

8. The multi-floor personnel real-time positioning system based on UWB positioning according to claim 1 is characterized by: The monitoring and display module integrates an electronic map to ensure that the map covers all floor plans, and performs mapping conversion of the three-dimensional coordinate system on each floor, maps the received position coordinate data to the corresponding electronic map, represents the personnel position in the form of points, continuously refreshes and updates the position marks of personnel on the electronic map, realizes real-time visualization of personnel distribution and dynamic trajectory, and detects whether personnel enter or leave the designated area in real time in the background according to the preset electronic fence area. When the regional alarm condition is triggered, the system automatically issues an alarm prompt and highlights the involved areas and personnel on the map.

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