A spiral staircase personnel walking parameter measuring device and method

Abstract

The application discloses a kind of spiral stair personnel walking parameter measuring devices, comprising: stair assembly, including shell, stand, slide rail, spiral stair tread and corridor. Slide rail is installed on the surface of stand, and the height of each spiral stair tread is adjusted by slidingly connecting stand and spiral stair tread. Spiral stair tread includes upgoing spiral stair tread, downgoing spiral stair tread. Corridor connects last upgoing spiral stair tread and first downgoing spiral stair tread. Test component includes camera, trajectory positioning auxiliary, attitude measurement sensor, gait measurement sensor and computer. The application can carry out multiple spiral stair scene test personnel motion experiment, quickly and accurately obtain multiple basic motion parameters of test personnel and their mutual relationship, and provide sufficient and accurate data support for the verification of test personnel motion theory model in spiral stair scene, test personnel motion model and software development.

Description

Technical Field

[0001] This invention relates to the field of public safety technology, specifically to a system and method for measuring the walking parameters of people on a spiral staircase. Background Technology

[0002] Staircase structures are widely used in various densely populated public buildings and entertainment venues to achieve vertical transportation. With the increasing complexity of building structures and the continuous increase in building height, the forms of staircases have also diversified. Spiral staircases occupy little space, greatly saving building space, while also being lightweight, aesthetically pleasing, and easy to install and modify, thus attracting increasing attention. With the continuous development of my country's national economy, many public buildings, such as libraries, theaters, and exhibition centers, have widely adopted spiral staircase structures, achieving excellent architectural aesthetics while utilizing space and saving land area.

[0003] However, while meeting people's normal walking needs, staircase construction must also ensure their safety. In emergencies, staircases serve as vertical evacuation routes, playing a crucial role in the efficiency of evacuation within a building. When a large number of pedestrians appear in stairwells, congestion can easily occur, even leading to stampedes. This not only severely impacts pedestrian evacuation but also has the potential to cause mass casualties. Staircase-related stampedes typically begin with the movement and gathering of people, forming a high-density crowd. Minor disturbances or disturbances within this high-density crowd then generate interaction forces that ultimately cause instability and a stampede. From a technical perspective, preventing stampedes fundamentally requires understanding the characteristics and patterns of pedestrian movement, making early predictions of movement trends, and intervening appropriately to prevent the formation of high-density crowds.

[0004] Pedestrian movement on staircases is a complex dynamic process. Revealing the three-dimensional movement patterns of pedestrians on staircases is of great practical significance for alleviating congestion and managing vertical evacuation in emergencies. Currently, methods for studying pedestrian movement mainly include theoretical modeling and controlled experiments, with theoretical modeling being the primary approach. Pedestrian movement experiments can provide direct and reliable evidence for the development and verification of theoretical models. However, due to the scarcity of controlled experiments conducted on spiral staircases, coupled with the large and complex scene construction and data processing involved, the number of experiments that can be carried out is limited. This makes it difficult to construct and verify theoretical models for this type of staircase, which is detrimental to accurately studying the flow characteristics of test personnel on spiral staircases. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a device and method for measuring the walking parameters of people on spiral staircases. This device and method can conduct motion experiments on testers in various spiral staircase scenarios, quickly and accurately obtain a variety of basic motion parameters of testers and their interrelationships, and provide sufficient and accurate data support for the verification of theoretical models of tester motion in spiral staircase scenarios, as well as the development of tester motion models and software.

[0006] This invention provides a device for measuring the walking parameters of a spiral staircase, comprising: a staircase assembly including a housing, columns, slide rails, spiral staircase treads, and a connecting corridor. The housing has an accommodating space, within which the columns, slide rails, spiral staircase treads, and connecting corridor are installed. The columns are vertically installed within the accommodating space. The slide rails are mounted on the surface of the columns, slidably connecting the columns to the spiral staircase treads for adjusting the height of each tread. The spiral staircase treads include ascending spiral staircase treads and descending spiral staircase treads. The connecting corridor connects the last ascending spiral staircase tread and the first descending spiral staircase tread. A testing assembly includes a camera, a trajectory positioning aid, an attitude measurement sensor, a gait measurement sensor, and a computer. The camera is installed within the accommodating space. The trajectory positioning aid, attitude measurement sensor, and gait measurement sensor are mounted on the tester. The computer is wirelessly connected to the camera, attitude measurement sensor, and gait measurement sensor. The camera and trajectory positioning aid are used together to obtain the tester's movement trajectory data. The posture measurement sensor is used to obtain the tester's posture data, the gait measurement sensor is used to obtain the tester's gait data, and the computer is used to receive the tester's movement trajectory data, posture data, and gait data.

[0007] Preferably, there are two cameras, which are installed at the top of the accommodating space and point at the bottom of the accommodating space at vertical and 45-degree tilt angles, respectively.

[0008] Preferably, the trajectory positioning aid is mounted on the top of the tester's head. The attitude measurement sensor is mounted on the tester's chest. Two gait measurement sensors are mounted on the tester's left and right ankles, respectively.

[0009] Furthermore, the slide rail includes a slide groove, a pulley, and a pulley fixing member. The pulley and pulley fixing member are installed within the slide groove, and the pulley fixing member is installed below the pulley. One end of the pulley is installed within the slide groove, and the other end is screwed to the spiral stair tread, used to adjust the position of each spiral stair tread within the slide groove, thereby adjusting the height of each spiral stair tread. Several pulley fixing members are screwed to the slide groove at equal intervals. The height adjustment of each spiral stair tread by the pulley is a multiple of the distance between adjacent pulley fixing members.

[0010] A testing method using a spiral staircase pedestrian walking parameter measuring device includes the following steps:

[0011] Step 1: Adjust the height of each spiral staircase step and make the height difference between each spiral staircase step equal. Install trajectory positioning aids, attitude measurement sensors and gait measurement sensors on a group of testers. Each tester enters the measurement device at the same time interval, stepping over one spiral staircase step at a time. Starting from the upward spiral staircase step, passing through the connecting corridor, and exiting the measurement device from the downward spiral staircase step.

[0012] Step 2: Obtain motion trajectory data for each tester using trajectory positioning aids and cameras, obtain posture data for each tester using posture measurement sensors, and obtain gait data for each tester using gait measurement sensors;

[0013] Step 3: By analyzing the motion trajectory data of each tester, spatial trajectory data of each tester is obtained and further data processing is performed to obtain speed, density, flow rate data and forward distance and speed data. By analyzing the posture data of each tester, angle and angular velocity data of each tester are obtained. By analyzing the gait data of each tester, step frequency and stride length data of each tester are obtained.

[0014] Furthermore, in step 3, the specific method for obtaining the velocity, density, and flow rate data is as follows:

[0015] The computer receives video recorded by a camera and uses an image segmentation algorithm to extract the pixel coordinates of the test personnel trajectory positioning aid in each frame. Based on the image coordinates and actual size in the video, the extracted motion image coordinates of the test personnel are corrected to obtain the test personnel's true motion trajectory. Based on the test personnel's true motion trajectory, the displacement of the test personnel within any time interval is calculated, and the test personnel's motion speed is obtained accordingly. The density of the test personnel is measured using the Veno diagram method. Further calculation of the product of the test personnel density and the test personnel speed yields the test personnel flow rate. The Veno diagram consists of a set of continuous polygons composed of perpendicular bisectors of lines connecting two adjacent points. Based on the coordinates of the test personnel on the stair plane, each point is associated with its nearest neighbor region according to the nearest neighbor principle. According to this method, the individual area occupied by each test personnel can be obtained, which is the area of ​​the Thiessen polygon of that coordinate point in the Veno diagram. The reciprocal of its area is its density.

[0016] Tester speed v t The value is measured according to the following formula:

[0017]

[0018] In the formula, x t = (x, y, z) represents the coordinates of the tester at time t, and τ represents the sampling time interval;

[0019] Test personnel density ρ t The value is calculated according to the following formula:

[0020]

[0021] In the formula, A t Let represent the area of ​​the Thiessen polygon occupied by the traverser (i.e., the tester) in the Venn diagram at time t.

[0022] Test personnel flow J t The value is calculated according to the following formula:

[0023] J t =v t ·ρ t

[0024] Furthermore, in step 3, the specific method for obtaining the forward distance and velocity data is as follows:

[0025] The computer receives the recorded video and uses an image segmentation algorithm to extract the pixel coordinates of the tester's trajectory positioning aid in each frame. Based on the image coordinates in the video and the actual size, the extracted motion image coordinates of the tester are corrected to obtain the tester's true motion trajectory. Based on the true motion trajectory, the displacement of the tester within any time interval is calculated, and the tester's speed is determined accordingly. For the trajectories of multiple testers, the distance between consecutive testers and the tester's speed v are calculated by statistically analyzing the position coordinates of consecutive testers. t The value is measured according to the following formula:

[0026]

[0027] In the formula, x t = (x, y, z) represents the coordinates of the tester at time t, and τ represents the sampling time interval;

[0028] The forward distance L of the tester is measured according to the following formula:

[0029]

[0030] In the formula, Let r1 be the radial arc of the tester i and the tester in front of it on the xy plane, and r2 be the inner diameter of the spiral stair tread and r3 be the outer diameter of the spiral stair tread.

[0031] Furthermore, in step 3, the specific method for obtaining the angle and angular velocity data is as follows:

[0032] The angle α of the tester's movement in the x-axis direction x The value is measured according to the following formula:

[0033]

[0034] Where, α x It is the axial movement angle of the tester in the x-direction, d x = (1, 1, 0) is the unit vector along the x-axis, d i =(d i，x d i，y d i，z ) represents the direction of movement of tester i;

[0035] The angular velocity ω of the tester's motion in the x-axis direction x The value is measured according to the following formula:

[0036]

[0037] The angular velocity γ of the tester in the xy plane x-yIt is measured according to the following formula:

[0038]

[0039] Among them, o t =d t ⊙u, u=(1,1,0) represents the projection of the tester's movement direction at time t onto the xy plane, where the xy plane is perpendicular to the axis of the column, and ⊙ is the Hadamard product operator.

[0040] Furthermore, in step 3, the specific method for obtaining the step frequency and step size data is as follows:

[0041] The tester's step frequency f was measured according to the following formula:

[0042]

[0043] In the formula, t s It is the moment when the tester's foot steps on the s-th level spiral staircase tread, which is also the moment when the tester's foot speed drops to 0. The unilateral step frequency is calculated based on the unilateral data.

[0044] The tester's step size l is measured according to the following formula:

[0045] l = ||x s+1 -x s ||

[0046] In the formula, x s = (x, y, z) are the coordinates of the tester's step on the s-th spiral staircase tread, with the step determined by the position of the toes.

[0047] The beneficial effects of this invention are as follows:

[0048] 1. This invention provides a spiral staircase walking parameter measurement system for testing personnel's movement on stairs, targeting the macroscopic and microscopic characteristics of such movement. This system can conduct motion experiments on personnel in various spiral staircase scenarios, quickly and accurately obtaining multiple basic motion parameters of the personnel and their interrelationships. It provides sufficient and accurate data support for verifying theoretical models of personnel movement in spiral staircase scenarios, and for developing motion models and software for personnel.

[0049] 2. This invention effectively solves the problems of difficulty in obtaining motion parameters and low motion accuracy for testers in spiral staircases. It can be used to conduct experiments on staircases with different tread heights and obtain accurate motion data of testers, providing assistance for the design of spiral staircase devices in public places. Attached Figure Description

[0050] Figure 1This is a schematic diagram of the staircase component in the spiral staircase personnel walking parameter measuring device in an embodiment of the present invention.

[0051] Figure 2 This is a schematic diagram of the slide rail structure in the staircase assembly according to an embodiment of the present invention.

[0052] Figure 3 This is a schematic diagram showing the disassembled structure of the slide rail in the staircase assembly according to an embodiment of the present invention.

[0053] Figure 4 This is a schematic diagram of the structural parameters in an embodiment of the present invention.

[0054] Figure 5 This is a logic block diagram of the testing method in an embodiment of the present invention.

[0055] Figure 6 This is a schematic diagram of the test component in the spiral staircase personnel walking parameter measuring device in an embodiment of the present invention.

[0056] Figure 7 This is a spatiotemporal trajectory diagram obtained in an embodiment of the present invention.

[0057] Figure 8 This is a velocity and density diagram obtained in an embodiment of the present invention.

[0058] Figure 9 This is a flow rate and density diagram obtained in an embodiment of the present invention.

[0059] Figure 10 This is a diagram showing the forward distance and velocity obtained in an embodiment of the present invention.

[0060] Figure 11 This is a graph showing the relationship between velocity and angular velocity obtained in an embodiment of the present invention.

[0061] Figure 12 This is a graph of foot movement data obtained in an embodiment of the present invention.

[0062] Figure 13 This is a step frequency and step length diagram obtained in an embodiment of the present invention.

[0063] Reference numerals: 1-Staircase assembly; 11-Housing; 111-Accommodation space; 12-Column; 13-Slide rail; 131-Slide groove; 132-Pulley; 133-Pulley fixing component; 14-Spiral stair tread; 141-Upward spiral stair tread; 142-Downward spiral stair tread; 15-Connecting corridor; 2-Test assembly; 21-Camera; 22-Trajectory positioning auxiliary component; 23-Attitude measurement sensor; 24-Gait measurement sensor; 25-Computer. Detailed Implementation

[0064] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0065] like Figure 1 , 2 As shown in Figures 3 and 6, a spiral staircase pedestrian walking parameter measuring device includes a staircase assembly 1, comprising a housing 11, columns 12, slide rails 13, spiral staircase treads 14, and a connecting corridor 15. The housing 11 has an accommodating space 111, within which the columns 12, slide rails 13, spiral staircase treads 14, and connecting corridor 15 are installed. The columns 12 are vertically installed within the accommodating space 111. A slide rail 13 is mounted on the surface of the column 12, slidably connecting the column 13 to the spiral stair tread 14. This slide rail 13 is used to adjust the height of each spiral stair tread 14. The slide rail 13 includes a groove 131, a pulley 132, and a pulley fixing member 133. The pulley 132 and pulley fixing member 133 are installed within the groove 131, and the pulley fixing member 133 is installed below the pulley 132. One end of the pulley 132 is installed within the groove 131, and the other end is screwed to the spiral stair tread 14. This allows adjustment of the position of each spiral stair tread 14 within the groove 131, thereby adjusting the height of each spiral stair tread 14. Several pulley fixing members 132 are screwed to the groove 133 at equal intervals. The height adjustment of each spiral stair tread 14 by the pulley 132 is a multiple of the distance between adjacent pulley fixing members 132. The spiral stair tread 14 includes an upward spiral stair tread 141 and a downward spiral stair tread 142. The connecting corridor 15 connects the last ascending spiral staircase tread 141 with the first descending spiral staircase tread 142.

[0066] Test component 2 includes a camera 21, a trajectory positioning aid 22, an attitude measurement sensor 23, a gait measurement sensor 24, and a computer 25. The camera 21 is mounted at the top of the accommodating space 21, pointing vertically and at a 45-degree angle towards the bottom of the accommodating space 21. The trajectory positioning aid 22, attitude measurement sensor 23, and gait measurement sensor 24 are mounted on the tester's body. The trajectory positioning aid 22 is mounted on the tester's head, the attitude measurement sensor 23 is mounted on the tester's chest, and there are two gait measurement sensors 24, mounted on the tester's left and right ankles respectively. The computer 25 is wirelessly connected to the camera 21, attitude measurement sensor 23, and gait measurement sensor 24. The camera 21 and trajectory positioning aid 22 are used together to obtain the tester's motion trajectory data, the attitude measurement sensor 23 is used to obtain the tester's attitude data, the gait measurement sensor 24 is used to obtain the tester's gait data, and the computer 25 is used to receive the tester's motion trajectory data, attitude data, and gait data.

[0067] Figure 2 , 3 Here is a detailed view of slide rail 13. Figure 4 This is a dimension drawing of the spiral stair tread 14, where h is the height between adjacent spiral stair treads 14, r1 is the inner diameter of the spiral stair tread 14, and r2 is the outer diameter of the spiral stair tread 14.

[0068] A test method using a spiral staircase walking parameter measurement device, the logic block diagram of which is as follows: Figure 5 As shown, it includes the following steps:

[0069] Step 1: Adjust the height of each spiral staircase tread 14 and make the height difference between each spiral staircase tread 14 equal. Install the trajectory positioning auxiliary device 22, attitude measurement sensor 23 and gait measurement sensor 24 on a group of test personnel. Each test personnel enters the measurement device at the same time interval, stepping over one spiral staircase tread 14 at a time. Starting from the upward spiral staircase tread 141, passing through the connecting corridor 15, and exiting the measurement device from the downward spiral staircase tread 142.

[0070] The experimental setup was divided into a measurement area and a waiting area. The measurement area housed the measurement device of this embodiment. During the experiment, testers wore trajectory positioning aids 22 of corresponding colors while waiting in the waiting area. After the experiment began, the testers entered the spiral staircase in a queue to participate in the test. Two high-definition cameras, with a resolution of 1080×720 pixels and a frame rate of 25, were mounted at the top of the accommodating space 111 to record the entire experimental process from above.

[0071] Step 2: Obtain motion trajectory data for each tester through trajectory positioning aid 22 and camera 21, obtain posture data for each tester through posture measurement sensor 23, and obtain gait data for each tester through gait measurement sensor 24.

[0072] Step 3: By analyzing the motion trajectory data of each tester, spatial trajectory data of each tester is obtained and further data processing is performed to obtain speed, density, flow rate data and forward distance and speed data. By analyzing the posture data of each tester, angle and angular velocity data of each tester are obtained. By analyzing the gait data of each tester, step frequency and stride length data of each tester are obtained.

[0073] Trajectories are extracted from video data to obtain corresponding spatiotemporal trajectory maps, such as... Figure 7 As shown.

[0074] Based on the obtained trajectory data, further calculations can be performed to obtain the speed, density, and flow rate data of the test personnel during the movement process. The specific method is as follows:

[0075] Computer 25 receives the recorded video and uses an image segmentation algorithm to extract the pixel coordinates of the test personnel trajectory positioning aid in each frame. Based on the image coordinates and actual size in the video, the extracted test personnel motion image coordinates are corrected to obtain the test personnel's true motion trajectory. Based on the test personnel's true motion trajectory, the displacement of the test personnel within any time interval is calculated, and the test personnel's motion speed is obtained accordingly. The test personnel density is measured using the Veno diagram method. Further calculation of the product of the test personnel density and the test personnel speed yields the test personnel flow rate. The Veno diagram consists of a set of continuous polygons composed of perpendicular bisectors of lines connecting two adjacent points. Based on the coordinates of the test personnel on the stair plane, each point is associated with its nearest neighbor region according to the nearest neighbor principle. According to this method, the individual area occupied by each test personnel is the area of ​​the Thiessen polygon of that coordinate point in the Veno diagram, and the reciprocal of its area is its density.

[0076] Tester speed v t The value is measured according to the following formula:

[0077]

[0078] In the formula, x t = (x,y,z) represents the coordinates of the tester at time t, and τ represents the sampling time interval;

[0079] Test personnel density ρ t The value is calculated according to the following formula:

[0080]

[0081] In the formula, A t This represents the area of ​​the Thiessen polygon occupied by the traveler at time t.

[0082] Test personnel flow J t The value is calculated according to the following formula:

[0083] J t =v t ·ρ t

[0084] Plotting velocity and density diagrams as follows Figure 8 As shown, the flow rate and density diagrams are as follows: Figure 9 As shown.

[0085] Calculate the forward distance of the test personnel to obtain the correlation between forward distance and speed, as follows:

[0086] Computer 25 receives the recorded video and uses an image segmentation algorithm to extract the pixel coordinates of the tester's trajectory positioning aid in each frame. Based on the image coordinates in the video and the actual size, the extracted motion image coordinates of the tester are corrected to obtain the tester's true motion trajectory. Based on the true motion trajectory, the displacement of the tester within any time interval is calculated, and the tester's speed is determined accordingly. For the trajectories of multiple testers, the distance between consecutive testers and the tester's speed v are calculated by statistically analyzing the position coordinates of consecutive testers. t The value is measured according to the following formula:

[0087]

[0088] In the formula, x t = (x, y, z) represents the coordinates of the tester at time t, and τ represents the sampling time interval;

[0089] The forward distance L of the tester is measured according to the following formula:

[0090]

[0091] In the formula, Let r1 be the radial radius of tester i and its forward tester projected onto the xy plane, and r2 be the inner diameter of spiral stair tread 14 and the outer diameter of spiral stair tread 14. The forward distance and velocity diagram are obtained as follows: Figure 10 As shown.

[0092] By analyzing personnel posture data and calculating the angular changes of the test personnel's movement, the relationship between the changes in speed and angle during the test personnel's movement is obtained. The specific method is as follows:

[0093] The angle α of the tester's movement in the x-axis direction x The value is measured according to the following formula:

[0094]

[0095] Where, α x It is the axial movement angle of the tester in the x-direction, d x = (1, 1, 0) is the unit vector along the x-axis, d i =(d i，x d i，y d i，z ) represents the direction of movement of tester i;

[0096] The angular velocity ω of the tester's motion in the x-axis direction x The value is measured according to the following formula:

[0097]

[0098] The angular velocity γ of the tester in the xy plane x-y It is measured according to the following formula:

[0099]

[0100] Among them, o t =d t ⊙u, u=(1,1,0), represents the projection of the tester's direction of motion at time t onto the xy-plane, where the xy-plane is perpendicular to the axis of column 12, and ⊙ is the Hadamard product operator. Plot the relationship between velocity and angular velocity changes, as shown below. Figure 11 As shown.

[0101] The specific method for obtaining gait frequency and stride length data by analyzing the gait data of test subjects is as follows:

[0102] Gait measurement sensors can output real-time coordinate data of the tester's feet, such as foot movement data. Figure 12 As shown, the tester's step frequency f was measured according to the following formula:

[0103]

[0104] In the formula, t s The moment when the tester's foot steps on the S-level spiral staircase tread 14 is the moment when the tester's foot speed drops to 0. The unilateral step frequency is calculated based on the unilateral data.

[0105] The tester's step size l is measured according to the following formula:

[0106] l = ||x s+1 -x s ||

[0107] In the formula, x s = (x, y, z) represents the coordinates of the tester's step on the s-th level spiral staircase tread 14, with the toe position determining the step. The resulting step frequency and step length graph are shown below. Figure 13 As shown.

[0108] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A device for measuring the walking parameters of a spiral staircase, characterized in that, include: The staircase assembly (1) includes a shell (11), columns (12), slide rails (13), spiral staircase treads (14), and connecting corridors (15). The housing (11) has an accommodating space (111) in which the column (12), slide rail (13), spiral stair tread (14) and connecting corridor (15) are installed; The column (12) is vertically installed within the accommodating space (111); The slide rail (13) is installed on the surface of the column (12) to slide the column (12) and the spiral stair tread (14) for adjusting the height of each spiral stair tread (14); The spiral stair treads (14) include an upward spiral stair tread (141) and a downward spiral stair tread (142). The connecting corridor (15) connects the last ascending spiral staircase tread (141) and the first descending spiral staircase tread (142); The test component (2) includes a camera (21), a trajectory positioning aid (22), an attitude measurement sensor (23), a gait measurement sensor (24), and a computer (25). The camera (21) is installed in the accommodating space (111); The trajectory positioning aid (22), attitude measurement sensor (23) and gait measurement sensor (24) are installed on the test personnel; The computer (25) is wirelessly connected to the camera (21), the posture measurement sensor (23), and the gait measurement sensor (24); Among them, the camera (21) and the trajectory positioning aid (22) are used together to obtain the motion trajectory data of the test personnel, the posture measurement sensor (23) is used to obtain the posture data of the test personnel, and the gait measurement sensor (24) is used to obtain the gait data of the test personnel; the computer (25) is used to receive the motion trajectory data, posture data and gait data of the test personnel, and obtain speed, density, flow and forward distance data by analyzing the motion trajectory data of each test personnel, obtain angle and angular velocity data of each test personnel by analyzing the posture data of each test personnel, and obtain step frequency and step length data of each test personnel by analyzing the gait data of each test personnel.

2. The spiral staircase pedestrian walking parameter measuring device as described in claim 1, characterized in that: The slide rail (13) includes a slide groove (131), a pulley (132) and a pulley fixing member (133). The pulley (132) and the pulley fixing member (133) are installed in the slide groove (131), and the pulley fixing member (133) is installed below the pulley (132). One end of the pulley (132) is installed in the groove (131), and the other end is screwed to the spiral stair tread (14) for adjusting the position of each spiral stair tread (14) in the groove (131) and thus adjusting the height of each spiral stair tread (14). Several of the pulley fixing members (133) are connected to the slide groove (131) by screws at equal intervals; The pulley (132) adjusts the height of each spiral stair tread (14) by a multiple of the distance between adjacent pulley fixing parts (133).

3. A testing method using a spiral staircase walking parameter measuring device as described in any one of claims 1-2, characterized in that, Includes the following steps: Step 1: Adjust the height of each spiral staircase tread (14) and make the height difference between each spiral staircase tread (14) equal. Install the trajectory positioning auxiliary device (22), attitude measurement sensor (23) and gait measurement sensor (24) on a group of testers. Each tester enters the measurement device in turn, stepping over one spiral staircase tread (14) at a time. Starting from the upward spiral staircase tread (141), passing through the connecting corridor (15), and exiting the measurement device from the downward spiral staircase tread (142); Step 2: Obtain motion trajectory data for each tester through trajectory positioning aid (22) and camera (21), obtain posture data for each tester through posture measurement sensor (23), and obtain gait data for each tester through gait measurement sensor (24); Step 3: By analyzing the motion trajectory data of each tester, we obtain speed, density, flow rate and forward distance data. By analyzing the posture data of each tester, we obtain angle and angular velocity data. By analyzing the gait data of each tester, we obtain step frequency and stride length data.

4. The testing method for a spiral staircase walking parameter measuring device as described in claim 3, characterized in that: In step 3, the specific method for obtaining speed data by analyzing the motion trajectory data of each tester is as follows: The computer (25) receives the video recorded by the camera (21), uses an image segmentation algorithm to extract the pixel coordinates of the test personnel trajectory positioning aid in each frame, corrects the extracted test personnel motion image coordinates according to the image coordinates and actual size in the video, and obtains the test personnel's real motion trajectory. Based on the test personnel's real motion trajectory, the displacement of the test personnel in any time interval is calculated, and the test personnel's motion speed is obtained based on the displacement. The formula is as follows: In the formula, To test the speed of the personnel, Let be the coordinates of the tester at time t. This represents the sampling time interval.

5. The testing method for a spiral staircase walking parameter measuring device as described in claim 4, characterized in that: In step 3, the density of test personnel is measured using the Vinograph method, and the calculation formula is as follows: In the formula, This represents the traverser in the Venn diagram, i.e., the tester, in... t The area occupied by the Thiessen polygon at any given moment. This indicates the density of test personnel.

6. The testing method for a spiral staircase walking parameter measuring device as described in claim 5, characterized in that: In step 3, the formula for calculating the flow of test personnel is as follows: In the formula, To test the flow of people.

7. The testing method for a spiral staircase walking parameter measuring device as described in claim 3, characterized in that: In step 3, the formula for calculating the forward distance is as follows: In the formula, The forward distance of the tester. For testers The radial radius of the test subject's projection onto the xy-plane, The inner diameter of the spiral stair tread (14) is... The outer diameter of the spiral stair tread (14).

8. The testing method for a spiral staircase walking parameter measuring device as described in claim 3, characterized in that: In step 3, the specific method for obtaining the angle and angular velocity data is as follows: The angle of motion of the tester in the x-axis direction The calculation formula is as follows: in, It is the axial movement angle of the tester in the x-direction. The x-axis is the unit vector. Let i be the direction of movement of the tester. The angular velocity of the tester's motion in the x-axis direction The calculation formula is as follows: Angular velocity of the tester in the xy plane The calculation formula is as follows: in, , represents the projection of the tester's movement direction at time t onto the xy plane, the xy plane being perpendicular to the axis of the column (12), and ⊙ being the Hadamard product operator.

9. The testing method for a spiral staircase walking parameter measuring device as described in claim 3, characterized in that: In step 3, the tester's step frequency The calculation formula is as follows: In the formula, The moment when the tester's foot lands on the s-th spiral staircase tread (14) is the moment when the speed of the tester's foot drops to 0.

10. The testing method for a spiral staircase walking parameter measuring device as described in claim 3, characterized in that: In step 3, the tester's step length l The calculation formula is as follows: In the formula, The coordinates of the tester's step on the spiral stair tread (14) at level s are the toe positions.

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