Arrangement method and system of passive wireless temperature sensor

Abstract

The application is suitable for the technical field of temperature detection, and particularly relates to a passive wireless temperature sensor arrangement method and system. The method comprises the following steps: obtaining a building model, dividing the building model into multiple arrangement intervals, and generating multiple arrangement interval models; importing the arrangement interval models, performing closed processing, dividing to obtain multiple arrangement spaces, and determining the number of sensors; constructing detection grids, performing signal transmission simulation, determining the signal coverage range when a reader is arranged in each detection grid, and obtaining transmission simulation data; based on the transmission simulation data, constructing a reader combination, determining the signal coverage under different reader combinations, screening out a reader combination meeting a preset condition, and determining the position of each sensor. The application analyzes the building model, intelligently determines the arrangement position of each sensor, ensures that each sensor can be detected by a reader, greatly improves the arrangement efficiency, and ensures the stability of operation.

Description

Technical Field

[0001] This invention belongs to the field of temperature detection technology, and particularly relates to a method and system for arranging a passive wireless temperature sensor. Background Technology

[0002] Passive wireless temperature sensors are devices that require no built-in power supply and are activated by external energy (such as radio waves). They accurately measure ambient temperature and wirelessly transmit the data to a reader or receiver. These sensors are small, easy to install, and suitable for applications where wiring is difficult or maintenance-free for extended periods, such as smart buildings, cold chain logistics, and industrial monitoring, providing an efficient and reliable temperature monitoring solution.

[0003] In smart buildings, in order to monitor the temperature of multiple areas within the building and control temperature regulation equipment, the existing passive wireless temperature sensors are mainly deployed manually and randomly. After installation, the limited transmission power of the reader affects the data reading of the sensor, resulting in reduced deployment efficiency and significantly increased deployment costs. Summary of the Invention

[0004] The purpose of this invention is to provide a method for arranging passive wireless temperature sensors, which aims to solve the problem that the arrangement of existing passive wireless temperature sensors mainly relies on manual random placement. After installation, the limited transmission power of the reader affects the data reading of the sensor, resulting in reduced sensor arrangement efficiency and significantly increased arrangement costs.

[0005] This invention is implemented as follows: a method for arranging a passive wireless temperature sensor, the method comprising:

[0006] Obtain the building model, divide the building model into multiple layout areas, and generate multiple layout area models. The projected area of ​​the layout area models on the horizontal plane does not exceed a preset value.

[0007] Import the layout interval model, enclose the walls in the layout interval model to divide it into multiple layout spaces, and determine the number of sensors in each layout space based on the area of ​​the layout space.

[0008] A detection grid is constructed based on the layout interval model. Signal transmission simulation is performed based on the detection grid to determine the signal coverage range when the reader is set in each detection grid, and the transmission simulation data is obtained.

[0009] Based on the transmitted analog data, a reader combination is constructed to determine the signal coverage under different reader combinations, and a reader combination that meets the preset conditions is selected to determine the location of each sensor.

[0010] Preferably, the step of importing the layout interval model, enclosing the walls in the layout interval model to divide it into multiple layout spaces, and determining the number of sensors in each layout space based on the area of ​​the layout space specifically includes:

[0011] Import the layout area model, and close the doors and windows in the layout area model to form multiple layout spaces;

[0012] Calculate the area of ​​the arrangement space, and divide the arrangement space that exceeds the preset value to obtain multiple sensor installation areas;

[0013] The number of sensors in each sensor installation area is determined according to the preset installation density, and the available installation range of each sensor is determined according to the preset installation interval.

[0014] Preferably, the steps of constructing a detection grid based on the arrangement interval model, performing signal transmission simulation based on the detection grid, determining the signal coverage range when setting up readers in each detection grid, and obtaining transmission simulation data specifically include:

[0015] A detection grid is constructed based on the layout interval model, and the entire layout interval model is divided into multiple detection grids;

[0016] The detection grid is filtered, and the detection grids that are more than the preset value away from the wall are removed. The point in the detection grid that is closest to the wall is selected as the setting point.

[0017] A virtual reader is set up at each setting point. The corresponding signal coverage range is determined based on the parameters of the virtual reader, and transmission simulation data is generated.

[0018] Preferably, the steps of constructing a reader combination based on transmitted analog data, determining the signal coverage under different reader combinations, selecting reader combinations that meet preset conditions, and determining the location of each sensor specifically include:

[0019] Select the corresponding number of readers according to the preset number of combined readers to construct a reader combination, and determine the signal coverage range of each reader based on the transmitted analog data;

[0020] Determine whether the signal coverage of each reader combination covers all available installation areas, and filter the reader combinations accordingly;

[0021] Adjust the sensor installation location within each available installation range based on the signal coverage of the remaining reader combination.

[0022] Preferably, the distance between any two sensors is greater than a preset value.

[0023] Another object of the present invention is to provide a passive wireless temperature sensor deployment system, the system comprising:

[0024] The model building module is used to acquire the building model, divide the building model into multiple layout areas, and generate multiple layout area models. The projected area of ​​the layout area model on the horizontal plane does not exceed a preset value.

[0025] The space division module is used to import the layout interval model, close the walls in the layout interval model, divide it into multiple layout spaces, and determine the number of sensors in each layout space based on the area of ​​the layout space.

[0026] The transmission simulation module is used to construct a detection grid based on the layout interval model, perform signal transmission simulation based on the detection grid, determine the signal coverage range when the reader is set in each detection grid, and obtain transmission simulation data.

[0027] The location module is used to construct reader combinations based on transmitted analog data, determine the signal coverage under different reader combinations, filter out reader combinations that meet preset conditions, and determine the position of each sensor.

[0028] Preferably, the space partitioning module includes:

[0029] The model closure unit is used to import the layout interval model and close the doors and windows in the layout interval model to form multiple layout spaces.

[0030] The installation area division unit is used to calculate the area of ​​the layout space and divide the layout space that exceeds the preset value to obtain multiple sensor installation areas.

[0031] The installation range identification unit is used to determine the number of sensors in each sensor installation area according to the preset installation density, and to determine the available installation range of each sensor according to the preset installation interval.

[0032] Preferably, the transmission simulation module includes:

[0033] Model partitioning unit is used to construct a detection grid based on the layout interval model, dividing the entire layout interval model into multiple detection grids;

[0034] The grid filtering unit is used to filter the detection grid, remove the detection grid that is more than a preset value away from the wall, and select the point in the detection grid that is closest to the wall as the setting point;

[0035] The analog data generation unit is used to set up a virtual reader at each setting point, determine the corresponding signal coverage range based on the parameters of the virtual reader, and generate transmission analog data.

[0036] Preferably, the location positioning module includes:

[0037] The signal simulation unit is used to select a corresponding number of readers to construct a reader combination according to a preset number of combined readers, and to determine the signal coverage range of each reader based on the transmitted simulation data.

[0038] The signal range filtering unit is used to determine whether the signal coverage of each reader combination covers all available installation areas, and to filter the reader combinations.

[0039] The sensor positioning unit is used to adjust the sensor installation position within each available installation range based on the signal coverage of the remaining reader combination.

[0040] Preferably, the distance between any two sensors is greater than a preset value.

[0041] This invention provides a method for arranging passive wireless temperature sensors. By analyzing a building model, the method intelligently determines the placement of each sensor, ensuring that each sensor can be detected by the reader, greatly improving the arrangement efficiency and guaranteeing operational stability. Attached Figure Description

[0042] Figure 1 A flowchart illustrating a method for arranging a passive wireless temperature sensor according to an embodiment of the present invention;

[0043] Figure 2 The flowchart illustrates the steps of importing a layout interval model, enclosing the walls in the layout interval model to divide it into multiple layout spaces, and determining the number of sensors in each layout space based on the area of ​​the layout space, as provided in this embodiment of the invention.

[0044] Figure 3 The flowchart of the steps for constructing a detection grid based on an arrangement interval model, performing signal transmission simulation based on the detection grid, determining the signal coverage range when setting up readers in each detection grid, and obtaining the transmission simulation data is provided in the embodiments of the present invention.

[0045] Figure 4 The flowchart illustrates the steps of constructing a reader combination based on transmitted analog data, determining the signal coverage under different reader combinations, selecting reader combinations that meet preset conditions, and determining the location of each sensor, as provided in this embodiment of the invention.

[0046] Figure 5 This is an architecture diagram of a passive wireless temperature sensor arrangement system provided in an embodiment of the present invention;

[0047] Figure 6 An architecture diagram of a space partitioning module provided in an embodiment of the present invention;

[0048] Figure 7 An architecture diagram of a transmission simulation module provided in an embodiment of the present invention;

[0049] Figure 8 This is an architecture diagram of a location positioning module provided in an embodiment of the present invention. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0051] like Figure 1 The diagram shows a flowchart of a method for arranging a passive wireless temperature sensor according to an embodiment of the present invention. The method includes:

[0052] S100, Obtain the building model, divide the building model into multiple layout intervals, and generate multiple layout interval models. The projected area of ​​the layout interval models on the horizontal plane does not exceed a preset value.

[0053] In this step, a building model is obtained. When multiple passive wireless temperature sensors (hereinafter referred to as sensors) need to be installed in a smart building, a three-dimensional model of the corresponding smart building is obtained, i.e., the building model. The location of the walls and the location of doors, windows or other openings inside the building are recorded in the building model. The building model is divided into multiple placement areas to facilitate the planning of sensor locations. When dividing, it can be based on area or floor. For example, the area of ​​the same floor is divided into a placement area. The building model is divided accordingly to obtain multiple placement area models. The projected area of ​​the placement area model on the horizontal plane does not exceed a preset value. The sensors can be SAW sensors or RFID sensors.

[0054] S200: Import the layout interval model, enclose the walls in the layout interval model to divide it into multiple layout spaces, and determine the number of sensors in each layout space based on the area of ​​the layout space.

[0055] In this step, the layout interval model is imported and loaded. During planning, features such as walls in the layout interval model are processed, and openings such as doors and windows are closed, thereby forming multiple closed layout spaces within the layout interval model. Sensors are set up in the layout spaces. The number of sensors is determined by the projected area of ​​the layout space. The larger the projected area, the more sensors are set up, that is, the more sampling points are set up in the space.

[0056] S300 constructs a detection grid based on the layout interval model, performs signal transmission simulation based on the detection grid, determines the signal coverage range when the reader is set in each detection grid, and obtains transmission simulation data.

[0057] In this step, a detection grid is constructed based on the layout interval model. In order to determine the signal coverage area when the reader is set in different locations, the layout interval model is divided into multiple detection grids. Each detection grid is regarded as a location where a reader is installed. Then, based on the parameter information of the reader and the location information of the wall, the signal strength at each location when the reader is set in the detection grid is calculated, and the transmission simulation data is obtained accordingly.

[0058] S400 constructs a reader combination based on transmitted analog data, determines the signal coverage under different reader combinations, selects reader combinations that meet preset conditions, and determines the position of each sensor.

[0059] In this step, a reader combination is constructed based on the transmitted simulated data. Since the area of ​​each layout interval model is large and there are obstacles (such as walls) within the layout interval model, setting a single reader cannot meet the requirement of reading data from all sensors. Therefore, multiple readers may need to be set up within a layout interval model. Multiple detection grids are randomly selected, and a virtual reader is set up in each detection grid to determine the signal coverage range under this reader combination, so as to determine whether the reading requirements are met. Under the premise of determining the reader combination, the position of the sensor is further adjusted so that the sensor is located in the area with the strongest signal to ensure the stability of data transmission.

[0060] like Figure 2 As shown, in a preferred embodiment of the present invention, the steps of importing the layout interval model, enclosing the walls in the layout interval model to divide it into multiple layout spaces, and determining the number of sensors in each layout space based on the area of ​​the layout space specifically include:

[0061] S201, Import the layout interval model, and close the doors and windows in the layout interval model to form multiple layout spaces.

[0062] In this step, the layout interval model is imported. Since the original layout interval model records various openings, including doors or windows, the positions of the openings are filled to form complete walls. Then the entire layout interval model will form multiple closed layout spaces.

[0063] S202, calculate the area of ​​the arrangement space, and divide the arrangement space with an area exceeding the preset value to obtain multiple sensor installation areas.

[0064] In this step, the area of ​​the arrangement space is calculated. First, the arrangement space is projected onto a horizontal plane to convert it into a plan. The dimensions of the plan are then calculated to obtain the projected area of ​​the arrangement space on the horizontal plane. Based on a preset range, it is determined whether the arrangement space needs to be further divided. For example, if the preset range is 30 square meters, then when the projected area exceeds 30 square meters, it is further divided into multiple sensor installation areas. The projected area of ​​each sensor installation area does not exceed 30 square meters. When dividing, the arrangement space is divided equally along the vertical direction. Each sensor installation area includes walls.

[0065] S203, determine the number of sensors in each sensor installation area according to the preset installation density, and determine the available installation range of each sensor according to the preset installation interval.

[0066] In this step, the number of sensors in each sensor installation area is determined according to the preset installation density. Specifically, one sensor can be installed in each sensor area, or multiple sensors can be installed to ensure the installation effect. The available installation range of each sensor is determined according to the preset installation interval. The installation interval can be 5 meters, that is, the distance between any two sensors is greater than 5 meters. The available installation range is the location of the wall surface in the sensor installation area.

[0067] like Figure 3 As shown, in a preferred embodiment of the present invention, the steps of constructing a detection grid based on an interval model, performing signal transmission simulation based on the detection grid, determining the signal coverage range when setting up readers in each detection grid, and obtaining transmission simulation data specifically include:

[0068] S301, constructs a detection grid based on the layout interval model, and divides the entire layout interval model into multiple detection grids.

[0069] In this step, a detection grid is constructed based on the layout interval model. The detection grid is a cube of a preset size, such as a cube with a side length of 10cm. The layout interval model is divided into multiple detection grids according to the size of the detection grid.

[0070] S302, filter the detection grid, remove the detection grid that is more than the preset value away from the wall, and select the point in the detection grid that is closest to the wall as the setting point.

[0071] In this step, the detection grid is filtered. Since the reader needs to be installed close to the wall for easy installation, if the detection grid is too far from the wall, it will increase the difficulty of installation. Therefore, by filtering the detection grid, only the detection grid within 20cm of the wall is retained. The retained detection grid is the setting point, which is used to set the virtual reader.

[0072] S303 sets up a virtual reader at each setting point, determines the corresponding signal coverage range based on the parameters of the virtual reader, and generates transmission simulation data.

[0073] In this step, a virtual reader is set up at each setting point. The reader's parameters are retrieved to determine its transmission power or signal strength. The wall information of the current smart building is obtained, and the wall absorption rate of the signal is determined based on the wall information. The center of the setting point is used as the transmission point, and simulated signals are transmitted to all directions from the transmission point as the source. Based on the absorption rate of the simulated signal in the air and in the wall, the signal strength loss of the signal passing through the air or wall at the corresponding distance is calculated to determine the signal strength value at each location in the entire space. The signal strength data at each location is recorded to obtain the transmission simulation data.

[0074] like Figure 4 As shown, in a preferred embodiment of the present invention, the steps of constructing a reader combination based on transmitted analog data, determining the signal coverage under different reader combinations, selecting reader combinations that meet preset conditions, and determining the location of each sensor specifically include:

[0075] S401: Select the corresponding number of readers according to the preset number of combined readers to construct a reader combination, and determine the signal coverage range of each reader according to the transmitted analog data.

[0076] In this step, a corresponding number of readers are selected according to the preset number of combined readers to construct a reader combination. The number of combined readers is determined based on the projected area of ​​the layout interval model. If multiple area intervals are set, a corresponding number of combined readers are set for each area interval. For example, if the area is 80-100 square meters, the number of combined readers is 3, that is, three readers are set in this layout interval model. Then, three readers are randomly selected from all possible locations of the readers to form a reader combination. For example, if readers A, B, and C are selected, the signal strength in each area when these three readers work simultaneously can be obtained by querying the transmission simulation data.

[0077] S402, determine whether the signal coverage of each reader combination covers all available installation areas, and filter the reader combinations.

[0078] S403 adjusts the sensor installation position within each available installation range based on the signal coverage of the remaining reader combination.

[0079] In this step, it is determined whether the signal coverage of each reader combination covers all available installation areas. If the signal coverage of a certain reader combination is small, and some available installation areas are not within the signal coverage area, it means that some sensors cannot be detected, and the reader combination is deleted. During the filtering process, the reader combination with the fewest readers is selected, and the reader combination with the shortest distance between the readers and the wall is chosen as the final reader configuration. Based on this, the number of readers and their installation locations are determined, and the corresponding signal coverage area is also determined. At this point, all available installation areas are within the signal coverage area. The relationship between each available installation area and the signal coverage area is then determined. The overlapping area is defined as the location where the signal strength within the overlapping area is higher than a preset value, and the sensor is installed at the location where the signal strength is higher than the preset value. If there is no area where the signal strength is higher than the preset value, the sensor will be placed at the overlapping position within the signal coverage area of ​​the reader. The signal strength of the reader at the overlapping position will not be lower than the minimum signal strength value. When the sensor is placed in the overlapping area, if a single reader cannot successfully read the data of the sensor, it means that the energy transmitted to the sensor by the reader is insufficient for the sensor to work. At this time, the two sets of sensors corresponding to the overlapping area work synchronously and read the data of the sensor at the same time. When the external energy provided by the two sets of readers arrives at the same time, it will increase the energy received by the sensor, thereby driving the sensor to work and complete the data reading.

[0080] like Figure 5 As shown, this is an embodiment of the present invention providing a passive wireless temperature sensor deployment system, the system comprising:

[0081] The model building module 100 is used to acquire a building model, divide the building model into multiple layout intervals, and generate multiple layout interval models. The projected area of ​​the layout interval models on the horizontal plane does not exceed a preset value.

[0082] In this system, the model building module 100 acquires a building model. When multiple passive wireless temperature sensors (hereinafter referred to as sensors) need to be installed in a smart building, the corresponding three-dimensional model of the smart building is acquired, i.e., the building model. The location of the walls and the location of doors, windows or other openings inside the building are recorded in the building model. The building model is divided into multiple placement areas to facilitate the planning of sensor locations. When dividing, it can be based on area or floor. For example, the area of ​​the same floor is divided into a placement area. The building model is divided accordingly to obtain multiple placement area models. The projected area of ​​the placement area model on the horizontal plane does not exceed a preset value. The sensor can be a SAW sensor or an RFID sensor.

[0083] The space division module 200 is used to import the layout interval model, enclose the walls in the layout interval model, divide it into multiple layout spaces, and determine the number of sensors in each layout space based on the area of ​​the layout space.

[0084] In this system, the space division module 200 imports the layout interval model and loads it. During planning, features such as walls in the layout interval model are processed, and openings such as doors and windows are closed, thereby forming multiple closed layout spaces within the layout interval model. Sensors are set up in the layout spaces. The number of sensors is determined by the projected area of ​​the layout space. The larger the projected area, the more sensors are set up, that is, the more sampling points are set up in the space.

[0085] The transmission simulation module 300 is used to construct a detection grid based on the layout interval model, perform signal transmission simulation based on the detection grid, determine the signal coverage range when the reader is set in each detection grid, and obtain transmission simulation data.

[0086] In this system, the transmission simulation module 300 constructs a detection grid based on the layout interval model. In order to determine the signal coverage area when the reader is set in different locations, the layout interval model is divided into multiple detection grids. Each detection grid is regarded as a location where a reader is installed. Based on the parameter information of the reader and the location information of the wall, the signal strength at each location when the reader is set in the detection grid is calculated, and the transmission simulation data is obtained accordingly.

[0087] The location module 400 is used to construct a reader combination based on transmitted analog data, determine the signal coverage under different reader combinations, filter out reader combinations that meet preset conditions, and determine the position of each sensor.

[0088] In this system, the location module 400 constructs a reader combination based on transmitted analog data. Since the area of ​​each layout interval model is large and there are obstacles (such as walls) within the layout interval model, setting a single reader cannot meet the requirement of reading data from all sensors. Therefore, multiple readers may need to be set up within a layout interval model. Multiple detection grids are randomly selected, and a virtual reader is set up in each detection grid to determine the signal coverage range under this reader combination, so as to determine whether the reading requirement is met. Under the premise of determining the reader combination, the position of the sensor is further adjusted so that the sensor is located in the area with the strongest signal to ensure the stability of data transmission.

[0089] like Figure 6 As shown, in a preferred embodiment of the present invention, the space partitioning module 200 includes:

[0090] Model closing unit 201 is used to import the layout interval model and close the doors and windows in the layout interval model to form multiple layout spaces.

[0091] In this module, the model closure unit 201 imports the layout interval model. Since the original layout interval model records various openings, including doors or windows, the positions of the openings are filled to form complete walls. Then the entire layout interval model will form multiple closed layout spaces.

[0092] The installation area division unit 202 is used to calculate the area of ​​the arrangement space and divide the arrangement space with an area exceeding the preset value to obtain multiple sensor installation areas.

[0093] In this module, the installation area division unit 202 calculates the area of ​​the layout space. First, the layout space is projected onto a horizontal plane to convert it into a plan view. The dimensions of the plan view are calculated to obtain the projected area of ​​the layout space on the horizontal plane. The layout space is further divided according to a preset interval range. For example, if the preset interval range is 30 square meters, then when the projected area exceeds 30 square meters, it is further divided into multiple sensor installation areas. The projected area of ​​each sensor installation area does not exceed 30 square meters. When dividing, the layout space is divided equally along the vertical direction. Each sensor installation area includes a wall.

[0094] The installation range identification unit 203 is used to determine the number of sensors in each sensor installation area according to the preset installation density, and to determine the available installation range of each sensor according to the preset installation interval.

[0095] In this module, the installation range identification unit 203 determines the number of sensors in each sensor installation area according to the preset installation density. Specifically, one sensor can be installed in each sensor area, or multiple sensors can be installed to ensure the installation effect. The available installation range of each sensor is determined according to the preset installation interval. The installation interval can be 5 meters, that is, the distance between any two sensors is greater than 5 meters. The available installation range is the location of the wall surface in the sensor installation area.

[0096] like Figure 7 As shown, in a preferred embodiment of the present invention, the transmission simulation module 300 includes:

[0097] Model partitioning unit 301 is used to construct a detection grid based on the layout interval model, dividing the entire layout interval model into multiple detection grids.

[0098] In this module, the model partitioning unit 301 constructs a detection grid based on the layout interval model. The detection grid is a cube of a preset size, such as a cube with a side length of 10cm. The layout interval model is divided into multiple detection grids according to the size of the detection grid.

[0099] The grid filtering unit 302 is used to filter the detection grid, remove the detection grid that is more than a preset value away from the wall, and select the point in the detection grid that is closest to the wall as the setting point.

[0100] In this module, the grid filtering unit 302 filters the detection grid. Since the reader needs to be installed close to the wall for easy installation, if the detection grid is too far from the wall, it will increase the installation difficulty. Therefore, by filtering the detection grid, only the detection grid within 20cm of the wall is retained. The retained detection grid is the setting point, which is used to set the virtual reader.

[0101] The analog data generation unit 303 is used to set a virtual reader at each setting point, determine the corresponding signal coverage range according to the parameters of the virtual reader, and generate transmission analog data.

[0102] In this module, the simulation data generation unit 303 sets up a virtual reader at each setting point, retrieves the reader's parameters, determines the reader's transmission power or transmission signal strength, obtains the wall information of the current smart building, determines the wall's signal absorption rate based on the wall information, and transmits simulated signals in all directions with the center of the setting point as the transmission point as the source. Based on the absorption rate of the simulated signal in the air and in the wall, it calculates the signal strength loss of the signal passing through the air or wall at the corresponding distance to determine the signal strength value at each location in the entire space. The signal strength data at each location is recorded to obtain the transmission simulation data.

[0103] like Figure 8 As shown, in a preferred embodiment of the present invention, the location positioning module 400 includes:

[0104] The signal simulation unit 401 is used to select a corresponding number of readers to construct a reader combination according to a preset number of combined readers, and to determine the signal coverage range of each reader based on the transmitted simulation data.

[0105] In this module, the signal simulation unit 401 selects a corresponding number of readers to construct a reader combination based on the preset number of combined readers. The number of combined readers is determined according to the projected area of ​​the layout interval model. If multiple area intervals are set, a corresponding number of combined readers is set for each area interval. For example, if the area is 80-100 square meters, the number of combined readers is 3, that is, three readers are set in the layout interval model. Then, three readers are randomly selected from all possible locations of the readers to form a reader combination. For example, if readers A, B and C are selected, the signal strength in each area when the three readers work simultaneously can be known by querying the transmission simulation data.

[0106] The signal range filtering unit 402 is used to determine whether the signal coverage of each reader combination involves all available installation areas, and to filter the reader combinations.

[0107] Sensor positioning unit 403 is used to adjust the sensor installation position within each available installation range based on the signal coverage of the remaining reader combination.

[0108] In this module, the signal range filtering unit 402 determines whether the signal coverage of each reader combination involves all available installation areas. If the signal coverage of a certain reader combination is small, and some available installation areas are not within the signal coverage, it means that some sensors cannot be detected, so the reader combination is deleted. When completing the filtering, the reader combination with the fewest readers is selected, and the reader combination with the shortest distance between the reader and the wall is selected as the final configuration scheme of the reader. Based on this, the number of readers and their installation positions are determined, and the corresponding signal coverage is also determined accordingly. At this time, all available installation areas are within the signal coverage. The overlapping area between each available installation area and the signal coverage is determined, and the position where the signal strength in the overlapping area is higher than the preset value is used as the installation position of the sensor. If there is no area where the signal strength is higher than the preset value, the sensor is set at the superposition position of the reader's signal coverage, and the signal strength of the reader at the superposition position is not lower than the minimum signal strength value.

[0109] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for arranging passive wireless temperature sensors, characterized in that, The method includes: Obtain the building model, divide the building model into multiple layout areas, and generate multiple layout area models. The projected area of ​​the layout area models on the horizontal plane does not exceed a preset value. Import the layout interval model, enclose the walls in the layout interval model to divide it into multiple layout spaces, and determine the number of sensors in each layout space based on the area of ​​the layout space. A detection grid is constructed based on the layout interval model. Signal transmission simulation is performed based on the detection grid to determine the signal coverage range when the reader is set in each detection grid, and the transmission simulation data is obtained. Based on the transmitted analog data, a reader combination is constructed to determine the signal coverage under different reader combinations, and a reader combination that meets the preset conditions is selected to determine the location of each sensor. The steps of constructing reader combinations based on transmitted analog data, determining the signal coverage under different reader combinations, selecting reader combinations that meet preset conditions, and determining the location of each sensor specifically include: Select the corresponding number of readers according to the preset number of combined readers to construct a reader combination, and determine the signal coverage range of each reader based on the transmitted analog data; Determine whether the signal coverage of each reader combination covers all available installation areas, and filter the reader combinations accordingly; Adjust the sensor installation location within each available installation range based on the signal coverage of the remaining reader combination; The steps of constructing a detection grid based on a layout interval model, simulating signal transmission based on the detection grid, determining the signal coverage range when setting up readers in each detection grid, and obtaining transmission simulation data specifically include: A detection grid is constructed based on the layout interval model, and the entire layout interval model is divided into multiple detection grids; The detection grid is filtered, and the detection grids that are more than the preset value away from the wall are removed. The point in the detection grid that is closest to the wall is selected as the setting point. A virtual reader is set up at each setting point. The corresponding signal coverage range is determined based on the parameters of the virtual reader, and transmission simulation data is generated.

2. The method for arranging the passive wireless temperature sensor according to claim 1, characterized in that, The steps of importing the layout interval model, enclosing the walls in the layout interval model to divide it into multiple layout spaces, and determining the number of sensors in each layout space based on the area of ​​the layout space specifically include: Import the layout area model, and close the doors and windows in the layout area model to form multiple layout spaces; Calculate the area of ​​the arrangement space, and divide the arrangement space that exceeds the preset value to obtain multiple sensor installation areas; The number of sensors in each sensor installation area is determined according to the preset installation density, and the available installation range of each sensor is determined according to the preset installation interval.

3. The method for arranging the passive wireless temperature sensor according to claim 1, characterized in that, The distance between any two sensors is greater than the preset value.

4. A passive wireless temperature sensor deployment system, characterized in that, The system includes: The model building module is used to acquire the building model, divide the building model into multiple layout areas, and generate multiple layout area models. The projected area of ​​the layout area model on the horizontal plane does not exceed a preset value. The space division module is used to import the layout interval model, close the walls in the layout interval model, divide it into multiple layout spaces, and determine the number of sensors in each layout space based on the area of ​​the layout space. The transmission simulation module is used to construct a detection grid based on the layout interval model, perform signal transmission simulation based on the detection grid, determine the signal coverage range when the reader is set in each detection grid, and obtain transmission simulation data. The location module is used to construct reader combinations based on transmitted analog data, determine the signal coverage under different reader combinations, filter out reader combinations that meet preset conditions, and determine the position of each sensor. The location positioning module includes: The signal simulation unit is used to select a corresponding number of readers to construct a reader combination according to a preset number of combined readers, and to determine the signal coverage range of each reader based on the transmitted simulation data. The signal range filtering unit is used to determine whether the signal coverage of each reader combination covers all available installation areas, and to filter the reader combinations. A sensor positioning unit is used to adjust the sensor installation position within each available installation range based on the signal coverage of the remaining reader combination. The transmission simulation module includes: Model partitioning unit is used to construct a detection grid based on the layout interval model, dividing the entire layout interval model into multiple detection grids; The grid filtering unit is used to filter the detection grid, remove the detection grid that is more than a preset value away from the wall, and select the point in the detection grid that is closest to the wall as the setting point; The analog data generation unit is used to set up a virtual reader at each setting point, determine the corresponding signal coverage range based on the parameters of the virtual reader, and generate transmission analog data.

5. The passive wireless temperature sensor arrangement system according to claim 4, characterized in that, The space partitioning module includes: The model closure unit is used to import the layout interval model and close the doors and windows in the layout interval model to form multiple layout spaces. The installation area division unit is used to calculate the area of ​​the layout space and divide the layout space that exceeds the preset value to obtain multiple sensor installation areas. The installation range identification unit is used to determine the number of sensors in each sensor installation area according to the preset installation density, and to determine the available installation range of each sensor according to the preset installation interval.

6. The passive wireless temperature sensor arrangement system according to claim 4, characterized in that, The distance between any two sensors is greater than the preset value.

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