CN112486325A - Pedestrian simulation equipment based on closed space evaluation system - Google Patents
Pedestrian simulation equipment based on closed space evaluation system Download PDFInfo
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- 238000004088 simulation Methods 0.000 title claims abstract description 99
- 238000011156 evaluation Methods 0.000 title claims abstract description 26
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- 210000002414 leg Anatomy 0.000 claims description 33
- 230000008859 change Effects 0.000 claims description 15
- 230000033001 locomotion Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000007405 data analysis Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 210000000689 upper leg Anatomy 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000011160 research Methods 0.000 abstract description 8
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- 238000010276 construction Methods 0.000 abstract 1
- 210000003128 head Anatomy 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 6
- 210000001508 eye Anatomy 0.000 description 6
- 238000005457 optimization Methods 0.000 description 6
- 230000004424 eye movement Effects 0.000 description 3
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
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- G—PHYSICS
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- G06F30/00—Computer-aided design [CAD]
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Abstract
The invention discloses pedestrian simulation equipment based on a closed space evaluation system, which relates to the technical field of intelligent transportation and comprises a wearable head display, a distance measuring ring, a mainframe box, a leg sensing device, a circular base and a ball sensor, wherein the mainframe box is arranged on the edge of the circular base, the distance measuring ring is arranged on the mainframe box, the mainframe box comprises a mainframe, the mainframe comprises an evaluation simulation system, the evaluation simulation system comprises a data processing module, a road network simulation module, a virtual reality simulation module and a data output module, and the equipment can be widely applied to traffic behavior simulation experiments, is simple in platform construction and easy to operate. The equipment realizes the integrated design of the pedestrian simulation instrument and traffic simulation software, and experimenters can freely walk in a virtual environment by using the pedestrian simulation equipment and are not limited by the field size. In addition, the equipment can provide pedestrian behavior simulation evaluation under a specific traffic environment for scientific research personnel, is simple and convenient to operate, and is not as tedious as a traditional traffic simulation mode.
Description
Technical Field
The invention relates to the technical field of intelligent traffic, in particular to pedestrian simulation equipment based on a closed space evaluation system.
Background
Pedestrian safety is a crucial issue for road planners, and particularly in the face of complex traffic conditions, road resources should be reasonably allocated to improve traffic efficiency and fully consider the experience of road users. For researchers, the behavior pattern of pedestrians is an important issue in the research field, and an emerging research means is also needed to support the experiment.
Along with the progress of virtual reality technology and the popularization of VR equipment, high research cost can be greatly reduced, but the existing virtual reality pedestrian simulation equipment has no leg induction device and distance measuring ring design, cannot accurately reflect the action track by depending on single base simulation equipment, and cannot ensure the safety of experimenters in the experimental process; in addition, no integrated equipment integrating a pedestrian simulation instrument and traffic simulation software is available in the market, and in the past, scientific researchers only can analyze a set walking route and cannot simulate an unknown traffic environment to obtain TTC data.
The device can simplify research steps, reduce the difficulty of setting scene experiments in the real world, widen the research space, and is beneficial to large-scale popularization because researchers are not limited by the laboratory environment.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide pedestrian simulation equipment based on a closed space evaluation system.
The invention adopts the following technical scheme for solving the technical problems:
the invention provides pedestrian simulation equipment based on a closed space evaluation system, which comprises a wearable head display, a distance measuring ring, a mainframe box, a leg sensing device, a circular base and a ball sensor, wherein the mainframe box is arranged on the edge of the circular base, the distance measuring ring is arranged on the mainframe box, the mainframe box comprises a mainframe, the mainframe comprises an evaluation simulation system, the evaluation simulation system comprises a data processing module, a road network simulation module, a virtual reality simulation module and a data output module, wherein,
a plurality of ball grooves are uniformly embedded in the surface of the round base, a ball is arranged in each ball groove, the leg sensing device is arranged on the leg of the person to be measured, wherein,
the ball sensor is used for calculating the displacement change and the walking speed of the ball in the vertical and horizontal directions according to photoelectric pulse signals generated when the ball rolls and then outputting the displacement change and the walking speed to the data processing module;
the distance measuring ring is used for monitoring the distance between an experimenter and the boundary of the circular base in real time and outputting the boundary distance to the virtual reality simulation module;
the leg sensing device is used for storing the leg lifting amplitude and direction change of the experimenter and outputting the leg lifting amplitude and direction change to the data processing module;
the wearable head display is used for measuring the eye activity data of the experimenter and outputting the eye activity data to the data output module;
the data processing module is used for collecting track data provided by the ball sensor, the track data comprises displacement change and walking speed, meanwhile, the track data is calibrated according to leg lifting amplitude and direction change provided by the leg sensing device, and the calibrated track data is transmitted to the virtual reality simulation module; the virtual reality simulation module is also used for directly transmitting the received boundary distance provided by the ranging ring to the virtual reality simulation module;
the road network simulation module is used for building a traffic environment model and synchronizing the traffic environment model to the virtual reality simulation module in real time;
the virtual reality simulation module is used for building a virtual reality environment by using the traffic environment model provided by the road network simulation module and transmitting the virtual reality environment to the wearable head display; the system is also used for receiving the track data provided by the data processing module, realizing synchronous reduction of experimenters in the virtual reality environment, generating character coordinate points and transmitting the character coordinate points to the road network simulation module; the device is also used for reminding the experimenter to retreat or adjust the direction to be away from the boundary when the received boundary distance is smaller than a preset distance value; the road network simulation module generates a relative motion track of the vehicle and the character according to the received character coordinate points and transmits the relative motion track to the data output module;
the data output module is used for calculating TTC data according to the relative motion track of the vehicle and the character transmitted by the receiving road network simulation module; the data output module receives the eye activity data output by the wearable head display.
As a further optimization scheme of the pedestrian simulation equipment based on the closed space evaluation system, the road network simulation module is used for building a traffic environment model and is connected with the virtual reality simulation module through an API port.
As a further optimization scheme of the pedestrian simulation equipment based on the closed space evaluation system, elastic binding bands are arranged on two sides of the leg sensing device to enable an experimenter to fix the leg sensing device on the outer sides of two thighs, a gyroscope sensor is arranged inside the leg sensing device to record leg lifting amplitude and walking direction of the experimenter each time, and the leg lifting amplitude and the walking direction are transmitted to a host through Bluetooth.
As a further optimization scheme of the pedestrian simulation equipment based on the closed space evaluation system, the distance measuring ring comprises a plurality of infrared sensors.
The pedestrian simulation equipment further comprises a touch display screen, wherein the touch display screen is embedded in the mainframe box and used for carrying out test setting and operation.
As a further optimization scheme of the pedestrian simulation equipment based on the closed space evaluation system, the ball sensor comprises a plurality of grating signal sensors, a pair of mutually vertical rotating shafts is arranged in the ball, and the tail end of each rotating shaft is provided with one grating signal sensor.
As a further optimization scheme of the pedestrian simulation equipment based on the closed space evaluation system, the road network simulation module is based on traffic microscopic simulation software PTV VISSIM and serves as a traffic data analysis platform.
As a further optimization scheme of the pedestrian simulation equipment based on the closed space evaluation system, the traffic environment model comprises roads, vehicles and signal phases.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
(1) the equipment can be widely applied to traffic behavior simulation experiments, and the platform is simple to build and easy to operate;
(2) the device can freely walk in a virtual environment, is not limited by site size, is simple and convenient to operate, and is not as fussy as a traditional traffic simulation mode.
Drawings
FIG. 1 is a schematic diagram of the instrument configuration.
Fig. 2 is a cross-sectional view of the instrument.
Fig. 3 is a schematic diagram of an evaluation simulation system.
The reference numerals in the figures are to be interpreted:
1-wearable head display, 2-distance measuring ring, 3-touch display screen, 4-mainframe box, 5-leg induction device, 6-ball, 7-round base, 8-infrared sensor, 9-mainframe, 10-rotating shaft, 11-grating signal sensor, and 12-ball groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
A pedestrian simulation device based on a closed space evaluation system is disclosed, as shown in figures 1 and 2, and comprises a circular base 7, balls 6, a leg sensing device 5, a distance measuring ring 2, a touch display screen 3, a wearable head display 1, a mainframe box 4, an infrared sensor 8, a mainframe 9, a rotating shaft 10, a grating signal sensor 11 and ball grooves 12, wherein the circular base 7 is internally provided with a plurality of ball grooves 12, each ball groove 12 is internally provided with one ball 6, the leg sensing device 5 is used for storing the leg lifting angle and height of an experimenter and transmitting data to the mainframe 9 through Bluetooth, the mainframe box 4 comprises a mainframe 9 internally provided with an evaluation simulation system, as shown in figure 3, and composed of a data processing module, a road network simulation module, a virtual reality simulation module and a data output module, the wearable head display 1 is composed of an internally provided with a display screen and an eye movement acquisition module, for providing storage of experimenter eye activity data and completing interaction with host computer 9.
The even embedding several ball groove 12 in circular base 7 surface, every ball groove 12 embeds there is a ball 6, supply the experimenter to step on towards all directions, the ball is the colloid ball that can four looks pivoted, when the people is walking, it rotates to drive the spin, the ball can drive a pair of mutually perpendicular's pivot when rolling and rotate (be the X, Y pivot respectively), end in the pivot is equipped with grating signal sensor, the photoelectric pulse signal that the sensor produced reflects the displacement change at perpendicular and horizontal direction of spin, transmit this data for host computer 9 through the bluetooth again.
The distance measuring ring 2 is provided with a plurality of infrared sensors, the distance between an experimenter and the boundary of the base can be monitored in real time, data are transmitted to the host machine 9 through the Bluetooth, the boundary distance is converted into a virtual wall body in a traffic virtual environment through the processing of the host machine 9, when the experimenter is close to the boundary, the wall body is materialized in the environment to remind the experimenter to retreat or adjust the direction to keep away from the boundary, and the safety is guaranteed.
An evaluation simulation system is arranged in the host, interaction of pedestrian walking and traffic simulation software based on a virtual reality technology (VR) is realized, and effective data is output for subsequent traffic analysis.
The wearable head display 1 is internally provided with a gyroscope sensor and an eye movement sensor, can record head movements of an experimenter each time, detects horizontal and vertical movements of eyeballs and transmits the horizontal and vertical movements to the host computer 9 through Bluetooth.
The evaluation simulation system arranged in the host machine 9 is composed of a data processing module, a road network simulation module, a virtual reality simulation module and a data output module.
The data processing module processes the track data (displacement change and walking speed) provided by the ball sensor 6 and the leg lifting amplitude and direction change provided by the leg sensing device 5, combines the two by an algorithm, calibrates the track data of an experimenter, and transmits the calibrated data to the virtual reality simulation module; the boundary distances provided for the ranging ring 3 are transmitted directly to the virtual reality simulation module.
The road network simulation module is used as a traffic data analysis platform based on traffic microscopic simulation software PTV VISSIM and is used for building traffic environment models (roads, vehicles, signal phases and the like) and simulating traffic environments; in addition, the road network simulation module is connected with the virtual reality simulation module through an API port, so that real-time synchronization of the models is realized; the road network simulation module is used for receiving the figure coordinate point data returned by the virtual reality simulation module, generating a relative motion track of the vehicle and the figure and then transmitting the track to the data output module.
The virtual reality simulation module provides a virtual reality simulation platform based on Unity 3D, builds a virtual reality environment by using a traffic environment model provided by the road network simulation module, and feeds back image information to the wearable head display 1 through Bluetooth, so that an experimenter can experience a highly realistic traffic environment in an immersive manner; the virtual reality module is used for receiving the track data provided by the data processing module, realizing synchronous reduction of an experimenter in a virtual reality environment, generating a character coordinate point and transmitting the character coordinate point to the road network simulation module.
The data output module is used for receiving the relative motion track of the vehicle and the character transmitted by the road network simulation module and calculating TTC (time to collision) data; the data output module receives the eye activity data output by the wearable head display.
The virtual reality simulation module converts the boundary distance provided by the distance measuring ring 2 into a virtual wall in a traffic virtual environment, and when an experimenter is close to the boundary, the wall is materialized in the environment to remind the experimenter to retreat or adjust the direction to be far away from the boundary, so that the safety is ensured.
The data output module receives the relative motion track of the vehicle and the character transmitted by the road network simulation module and calculates TTC (time to collision) data; the data output module receives the eye activity data output by the wearable head display for subsequent research.
The touch display screen 3 is embedded in the mainframe box 4 and used for carrying out test setting and operation.
The evaluation method of the pedestrian simulation equipment in the closed space comprises the following steps:
s1: and debugging a road network simulation module and making a traffic simulation environment. Selecting traffic microscopic simulation software, building a road network model, inputting parameters, and setting different scene schemes, wherein the scene schemes comprise traffic flow, driving paths and signal timing schemes.
S2: and debugging the virtual reality simulation module, and connecting the road network simulation module. And selecting a character model as a mirror image mapping model of an experimenter in a game engine, debugging the virtual environment of the road network, and increasing the reality sense of the experiment.
S3: and (5) carrying out an experiment, so that an experimenter wears the equipment to carry out the experiment according to the experiment requirement.
S4: and (6) outputting and analyzing data. Path trajectory data, ttc (time to collision) data and eye movement reaction data of an experimenter in a virtual reality scene through equipment are collected through a data output module of a host and used for subsequent research.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (8)
1. A pedestrian simulation device based on a closed space evaluation system is characterized by comprising a wearable head display, a distance measuring ring, a mainframe box, a leg sensing device, a circular base and a ball sensor, wherein the mainframe box is arranged on the edge of the circular base, the distance measuring ring is arranged on the mainframe box, the mainframe box comprises a mainframe, the mainframe comprises an evaluation simulation system, the evaluation simulation system comprises a data processing module, a road network simulation module, a virtual reality simulation module and a data output module, wherein,
a plurality of ball grooves are uniformly embedded in the surface of the round base, a ball is arranged in each ball groove, the leg sensing device is arranged on the leg of the person to be measured, wherein,
the ball sensor is used for calculating the displacement change and the walking speed of the ball in the vertical and horizontal directions according to photoelectric pulse signals generated when the ball rolls and then outputting the displacement change and the walking speed to the data processing module;
the distance measuring ring is used for monitoring the distance between an experimenter and the boundary of the circular base in real time and outputting the boundary distance to the virtual reality simulation module;
the leg sensing device is used for storing the leg lifting amplitude and direction change of the experimenter and outputting the leg lifting amplitude and direction change to the data processing module;
the wearable head display is used for measuring the eye activity data of the experimenter and outputting the eye activity data to the data output module;
the data processing module is used for collecting track data provided by the ball sensor, the track data comprises displacement change and walking speed, meanwhile, the track data is calibrated according to leg lifting amplitude and direction change provided by the leg sensing device, and the calibrated track data is transmitted to the virtual reality simulation module; the virtual reality simulation module is also used for directly transmitting the received boundary distance provided by the ranging ring to the virtual reality simulation module;
the road network simulation module is used for building a traffic environment model and synchronizing the traffic environment model to the virtual reality simulation module in real time;
the virtual reality simulation module is used for building a virtual reality environment by using the traffic environment model provided by the road network simulation module and transmitting the virtual reality environment to the wearable head display; the system is also used for receiving the track data provided by the data processing module, realizing synchronous reduction of experimenters in the virtual reality environment, generating character coordinate points and transmitting the character coordinate points to the road network simulation module; the device is also used for reminding the experimenter to retreat or adjust the direction to be away from the boundary when the received boundary distance is smaller than a preset distance value; the road network simulation module generates a relative motion track of the vehicle and the character according to the received character coordinate points and transmits the relative motion track to the data output module;
the data output module is used for calculating TTC data according to the relative motion track of the vehicle and the character transmitted by the receiving road network simulation module; the data output module receives the eye activity data output by the wearable head display.
2. The pedestrian simulation device based on the closed space assessment system according to claim 1, wherein the road network simulation module is used for building a traffic environment model and is connected with the virtual reality simulation module through an API port.
3. The pedestrian simulation device based on the closed space assessment system according to claim 1, wherein the leg sensing device is provided with elastic bands at two sides for fixing the experimenter on the outer sides of two thighs, a gyroscope sensor is arranged inside the leg sensing device, the leg lifting amplitude and the walking direction of the experimenter are recorded each time, and the leg lifting amplitude and the walking direction are transmitted to the host through Bluetooth.
4. The closed space assessment system based pedestrian simulation apparatus of claim 1, wherein the ranging ring comprises a plurality of infrared sensors.
5. The pedestrian simulation device based on the enclosed space assessment system according to claim 1, further comprising a touch display screen embedded in the main chassis for experimental setup and operation.
6. The pedestrian simulation device based on the closed space assessment system according to claim 1, wherein the ball sensor comprises a plurality of grating signal sensors, a pair of mutually perpendicular rotating shafts are arranged in the ball, and one grating signal sensor is arranged at the end of each rotating shaft.
7. The closed space assessment system-based pedestrian simulation device according to claim 1, wherein said road network simulation module is based on traffic microscopic simulation software PTV VISSIM as a traffic data analysis platform.
8. The pedestrian simulation device based on the closed space assessment system according to claim 1, wherein the traffic environment model comprises road, vehicle, signal phase.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114724429A (en) * | 2022-03-10 | 2022-07-08 | 上海犀客信息科技有限公司 | Intelligent step pedal device for training child to return home independently |
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| CN104820763A (en) * | 2015-05-25 | 2015-08-05 | 西华大学 | Traffic accident three-dimensional simulation method based on microscopic traffic simulation software (VISSIM) |
| CN109658768A (en) * | 2018-12-27 | 2019-04-19 | 交通运输部科学研究院 | A kind of more people of virtual reality are the same as scene mixed traffic flow Simulation Experimental Platform |
| CN110379244A (en) * | 2019-07-25 | 2019-10-25 | 昆明理工大学 | It is a kind of to intend the very VR Universal moving platform of solid landform and its control system and method |
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- 2020-12-09 CN CN202011447308.2A patent/CN112486325A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104820763A (en) * | 2015-05-25 | 2015-08-05 | 西华大学 | Traffic accident three-dimensional simulation method based on microscopic traffic simulation software (VISSIM) |
| CN109658768A (en) * | 2018-12-27 | 2019-04-19 | 交通运输部科学研究院 | A kind of more people of virtual reality are the same as scene mixed traffic flow Simulation Experimental Platform |
| CN110379244A (en) * | 2019-07-25 | 2019-10-25 | 昆明理工大学 | It is a kind of to intend the very VR Universal moving platform of solid landform and its control system and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114724429A (en) * | 2022-03-10 | 2022-07-08 | 上海犀客信息科技有限公司 | Intelligent step pedal device for training child to return home independently |
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