CN105954007B - Delay test system and method for virtual implementing helmet acceleration movement - Google Patents
Delay test system and method for virtual implementing helmet acceleration movement Download PDFInfo
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- CN105954007B CN105954007B CN201610331542.6A CN201610331542A CN105954007B CN 105954007 B CN105954007 B CN 105954007B CN 201610331542 A CN201610331542 A CN 201610331542A CN 105954007 B CN105954007 B CN 105954007B
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- implementing helmet
- virtual implementing
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- rotating disk
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a kind of delay test system and method for virtual implementing helmet acceleration movement.Arc scale, virtual implementing helmet and camera arranged for interval successively along a straight line, it is fixedly mounted on controllable rotating disk, one side-lower of controllable rotating disk is equipped with servo motor, and the output shaft of servo motor is fixedly connected with controllable rotating disk, and virtual implementing helmet display screen shows virtual ruler；Servo motor drives controllable rotating disk to be rotated with constant angular velocity, the arc scale and virtual implementing helmet on controllable rotating disk are shot by camera, its scale amount is obtained to the virtual ruler interface analysis of virtual implementing helmet display screen in image, and then calculates the retardation for obtaining virtual implementing helmet.The present invention realizes the delay test of virtual implementing helmet acceleration movement, accurately measures system overall delay, can avoid caused visual angle error when shooting, improves system accuracies, final testing result is accurately reliable.
Description
Technical field
The present invention relates to a kind of test system and method, and virtual implementing helmet acceleration is used for more particularly, to a kind of
The delay test system and method for movement, virtual implementing helmet delay parameter is quantified, and can be set according to this for virtual implementing helmet
The standby delay Optimization that carries out reduces the spinning sensation of user.
Background technology
It is announced from March, 2014 Facebook with the manufacturer of 2,000,000,000 dollars of purchase virtual reality device Rift VR
Oculus rises, and virtual reality industry becomes one of current most popular industry, and numerous manufacturers, which fall over each other, puts into this industry, causes
Virtual reality technology is fast-developing.But there is Railway Project to annoying equipment vendors always always, wherein being related to virtual reality
The problem of industry lifeblood is the dizzy sense of user experience.However the condition for causing user dizzy has very much, such as user's constitution
Difference, eyesight difference, image definition difference, system delay time etc..It wherein can directly measure, and amendatory problem is to be
The whole delay of system.But since the thing that system delay is related to is complicated, and part delay can be offset by complicated algorithm, real
Border survey engineering more complicatedization, engineer is mostly based on estimation.If wanting to reduce system delay, need accurately to survey delay
Amount.
Invention content
In order to solve the problems, such as the not energetic test of virtual implementing helmet delay parameter, the object of the present invention is to provide
A kind of delay test system and method for virtual implementing helmet acceleration movement are accelerating for testing virtual implementing helmet
Spend the amount of delay in motion process.
The technical solution adopted by the present invention is as follows：
One, a kind of delay test system for virtual implementing helmet acceleration movement：
Including controllable rotating disk, arc scale, virtual implementing helmet, camera and host computer, arc scale virtually shows
The real helmet and camera arranged for interval successively along a straight line, are fixedly mounted on controllable rotating disk, one side-lower of controllable rotating disk
Equipped with servo motor, the output shaft of servo motor is fixedly connected with controllable rotating disk, servo motor, virtual implementing helmet and camera shooting
Head is connect with the host computer for being placed in outside, and virtual implementing helmet display screen shows virtual ruler.
The virtual implementing helmet is placed between arc scale and camera so that arc scale centre, virtual reality
Helmet center and camera center three point on a straight line, the display screen of virtual implementing helmet is towards camera.
When controllable rotating disk is static, the virtual implementing helmet display screen show match with arc scale it is virtual
The interface of scale.After scene being initialized i.e. under static position, the scene of display in the image helmet display screen that camera observes
In 0 degree of dial markings of 0 degree of dial markings of scale and arc scale coincide.
The camera is fixedly mounted on the controllable rotating disk top surface for being equipped with servo motor side, and arc scale fixes peace
Mounted in the controllable rotating disk top surface for not being equipped with servo motor side, arc scale height is higher than virtual implementing helmet so that camera shooting
Head takes the scale portion on virtual implementing helmet display screen and arc scale simultaneously.
Preferably, the virtual ruler interface (test scene) that the virtual implementing helmet display screen is presented is arc scale
Rotate a circle surrounded cylindrical surface around the rotation center of controllable rotating disk.
The arc scale be using the rotation center of its installation site to controllable rotating disk as the cylindrical surface of radius in cut
The part taken.
Two, a kind of time-delay test method for virtual implementing helmet acceleration movement：
Using above system, host computer sends motor control signal control servomotor and drives controllable rotating disk with constant
Angular speed a is rotated, and shoots the arc scale and virtual implementing helmet on controllable rotating disk by camera, shooting image passes
It is sent in host computer that the virtual ruler interface of virtual implementing helmet display screen in image analyze and obtains its scale amount, root
It carries out calculating the retardation for obtaining virtual implementing helmet according to scale amount.
In the controllable rotating disc spins, the moment instantaneous scale amount twice that measures is marked using following formula calculating
Measure variation error：
Wherein, β1Indicate the angular speed at the first moment, β2Indicate that the angular speed at the second moment, t indicate the time at moment twice
Interval,Indicate the scale amount at the first moment,Indicate the scale amount at the second moment；
Then, the delay time for obtaining virtual implementing helmet is calculated using following formula：
Wherein, a indicates the angular acceleration of controllable rotating disc spins.
In the system, virtual location and arc scale where the virtual ruler that virtual implementing helmet display screen is presented away from
From coincidence.
The present invention by controllable rotating disk can rate controlling rotation make virtual reality system generate delay angle, by observation prolong
When angle, bring formula calculation system into and be totally delayed.
Virtual implementing helmet is built-in with acceleration transducer, and the present invention brings virtual existing for acceleration transducer therein
The display delayed of the real helmet is detected.
The servo motor connects Serve Motor Control circuit board, its rotating speed is controlled by Serve Motor Control circuit board.
Serve Motor Control circuit board carries out accurate adjusting realization using pid algorithm by comparing the difference of desired speed and present speed
Servo motor rotating speed is accurately controlled.
The beneficial effects of the invention are as follows：
Its rotating disk control accuracy of present system is high, and system zero-lag response rotation operates and accurately measures the angle of rotation
Speed, high-precision rotation and measurement will not be to measure to bring error, final testing result accurately reliable.
The present invention can avoid caused visual angle error when shooting, improves system accuracies, makes final measurement more
Reliably.
By system possessed by virtual implementing helmet, totally delay reappears and detects its detailed delay time to the present invention, for contracting
The short virtual implementing helmet system delay time lays the first stone.
Description of the drawings
Fig. 1 is virtual implementing helmet time-delay detection system schematic diagram.
Fig. 2 is scale and arc scale quarter in the display screen observed in camera when embodiment controllable rotating disk is static
Spend schematic diagram.
Scale and arc scale in the display screen observed in camera when Fig. 3 is embodiment controllable rotating disc spins are carved
Spend schematic diagram.
Fig. 4 is the delay-angle schematic diagram generated after controllable rotating disc spins.
In figure：Controllable rotating disk 1, arc scale 2, virtual implementing helmet 3, camera 4, host computer 5.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment invention is further described in detail.
As shown in Figure 1, the present invention includes controllable rotating disk 1, arc scale 2, virtual implementing helmet 3, camera 4 and computer
Host 5, arc scale 2, virtual implementing helmet 3 and camera 4 arranged for interval successively along a straight line, is fixedly mounted on controllable rotating
On disk 1,1 one side-lower of controllable rotating disk is equipped with servo motor, and the output shaft of servo motor is fixedly connected with controllable rotating disk 1,
Servo motor, virtual implementing helmet 3 and camera 4 are connect with the host computer 5 for being placed in outside, and virtual implementing helmet 3 is shown
Screen display is shown with virtual ruler.
Virtual implementing helmet 3 is placed between arc scale 2 and camera 4 so that 2 center of arc scale, virtual reality head
4 center three point on a straight line of 3 center of helmet and camera, the display screen of virtual implementing helmet 3 is towards camera 4.
Camera 4 is fixedly mounted on 1 top surface of controllable rotating disk for being equipped with servo motor side, and arc scale 2 is fixedly mounted
In 1 top surface of controllable rotating disk for not being equipped with servo motor side, 2 height of arc scale is higher than virtual implementing helmet 3 so that camera shooting
First 4 take the scale portion on 3 display screen of virtual implementing helmet and arc scale 2 simultaneously.
The embodiment of the present invention is as follows：
Host computer 5 is sent motor control signal control servomotor and controllable rotating disk 1 is driven to be carried out with constant angular velocity a
Rotation shoots arc scale 2 and virtual implementing helmet 3 on controllable rotating disk 1 by camera 4, and shooting image is transmitted to electricity
Analysis is carried out to the virtual ruler interface of 3 display screen of virtual implementing helmet in image in brain server 5 and obtains its scale amount, according to mark
Measurement carries out calculating the retardation for obtaining virtual implementing helmet 3.
The virtual ruler interface (test scene) that 3 display screen of virtual implementing helmet is presented is arc scale around controllable rotating disk
1 rotation center rotates a circle surrounded cylindrical surface, and arc scale is in the rotation of its installation site to controllable rotating disk 1
The heart is the part intercepted in the cylindrical surface of radius, the imaginary circles cylinder and arc scale 2 that 3 display screen of virtual implementing helmet is presented
It overlaps.Scale minimum scale in the test scene of specific implementation is 0.001 degree, and arc scale minimum scale is 0.0009 degree,
The precision of measurement is 0.0001 degree.
When controllable rotating disk 1 is static, initialization is carried out so that virtual ruler matches with arc scale 2 to system, that is, is taken the photograph
0 degree of dial markings of scale in scene as shown in the image helmet display screen that head observes and 0 degree of graduated scale of arc scale
Line coincides, as shown in Figure 2.
As shown in Figure 3 certain prolong is produced to after right rotation with constant acceleration a in virtual implementing helmet system
Late, since direction of rotation is to right rotation, when reading, is subject to 0 graduation mark and 1 graduation mark on right side, the same vernier calliper of scale pronunciation
Ruler number reading method.
Assuming that the time interval recorded twice is t, the angular speed of first record is ω1, the angular speed of second of record
For ω2, using angle as scale amount, the angle of first record is θ1, the angle of second of record is θ2, then：
Actual angle variable quantity
The angle variable quantity Δ θ observed in the helmet2=θ2-θ1
Therefore it measures the scale amount recorded twice and acquisition scale amount variation error is calculated using following formula：
Angle change error is
Wherein, ω1Indicate the angular speed at the first moment, ω2Indicate the angular speed at the second moment, t indicate moment twice when
Between be spaced, θ1Indicate the scale amount at the first moment, θ2Indicate the scale amount at the second moment.
Then, following formula of the structure comprising system delay time is solved：
ωt 2-ω1 2=2a θ
ωt=ω1+at
It solves and obtains the delay time that following formula calculates acquisition virtual implementing helmet 3：
By error angleSubstituting into formula can obtain:
Wherein, a indicates the angular acceleration of 1 rotation of controllable rotating disk.
Embodiment test process data measured is as follows：
A=10 °/s, t=2s, ω1=0, ω2=20, θ1=0, θ2=19.9981
Substitute into following formula：
It is computed Δ t=0.0194935886896179278136768263998, is approximately equal to 0.0195s i.e. 19.5ms, by
This then can determine that the helmet delay time is 19.5ms, and it is more accurate relatively to pass through the delay value that data are estimated.
Claims (9)
1. a kind of delay test system for virtual implementing helmet acceleration movement, it is characterised in that：Including controllable rotating disk
(1), arc scale (2), virtual implementing helmet (3), camera (4) and host computer (5), arc scale (2), virtual reality head
Helmet (3) and camera (4) arranged for interval successively along a straight line, are fixedly mounted on controllable rotating disk (1), controllable rotating disk (1)
One side-lower is equipped with servo motor, and the output shaft of servo motor is fixedly connected with controllable rotating disk (1), and servo motor virtually shows
The real helmet (3) and camera (4) are connect with host computer (5), and virtual implementing helmet (3) display screen shows virtual ruler,
The display screen of virtual implementing helmet (3) is towards camera (4).
2. a kind of delay test system for virtual implementing helmet acceleration movement according to claim 1, feature
It is：The virtual implementing helmet (3) is placed between arc scale (2) and camera (4) so that arc scale (2) center,
Virtual implementing helmet (3) center and camera (4) center three point on a straight line.
3. a kind of delay test system for virtual implementing helmet acceleration movement according to claim 1, feature
It is：When controllable rotating disk (1) is static, the virtual implementing helmet (3) display screen is shown to match with arc scale (2)
Virtual ruler interface.
4. a kind of delay test system for virtual implementing helmet acceleration movement according to claim 1, feature
It is：The camera (4) is fixedly mounted on controllable rotating disk (1) top surface for being equipped with servo motor side, arc scale (2)
It is fixedly mounted on controllable rotating disk (1) top surface for not being equipped with servo motor side, arc scale (2) is highly higher than virtual reality head
Helmet (3).
5. a kind of delay test system for virtual implementing helmet acceleration movement according to claim 1, feature
It is：The virtual ruler interface that described virtual implementing helmet (3) display screen is presented is arc scale around controllable rotating disk (1)
Rotation center rotates a circle surrounded cylindrical surface.
6. a kind of delay test system for virtual implementing helmet acceleration movement according to claim 1, feature
It is：The arc scale be using the rotation center of its installation site to controllable rotating disk (1) as the cylindrical surface of radius in section
The part taken.
7. a kind of time-delay test method for virtual implementing helmet acceleration movement, it is characterised in that：
Using any system of claim 1~6, host computer (5) sends motor control signal control servomotor and drives
Controllable rotating disk (1) is rotated with constant angular velocity a, and the arc scale on controllable rotating disk (1) is shot by camera (4)
(2) it is transmitted in host computer (5) to virtual implementing helmet in image (3) display screen with virtual implementing helmet (3), shooting image
Virtual ruler interface carry out analysis and obtain its scale amount, according to scale amount calculate and obtain virtual implementing helmet (3) and prolong
Chi Liang.
8. a kind of time-delay test method for virtual implementing helmet acceleration movement according to claim 7, feature
It is：In the controllable rotating disk (1) rotates, the moment instantaneous scale amount twice that measures is marked using following formula calculating
Measure variation error：
Wherein, β1Indicate the angular speed at the first moment, β2Indicate that the angular speed at the second moment, t indicated between the time at moment twice
Every,Indicate the scale amount at the first moment,Indicate the scale amount at the second moment；
Then, the delay time for obtaining virtual implementing helmet (3) is calculated using following formula：
Wherein, a indicates the angular acceleration that controllable rotating disk (1) rotates.
9. a kind of time-delay test method for virtual implementing helmet acceleration movement according to claim 7, feature
It is：In the system, the virtual location where the virtual ruler that virtual implementing helmet (3) display screen is presented and arc scale
(2) distance overlaps.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020107586A1 (en) * | 2018-11-26 | 2020-06-04 | 歌尔股份有限公司 | Detection system and method for parameters of optical module |
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| CN106768856B (en) * | 2016-11-15 | 2019-03-15 | 北京小米移动软件有限公司 | A kind of determination method and device of traveling time delay |
| CN106644396B (en) * | 2016-12-16 | 2019-06-25 | 捷开通讯(深圳)有限公司 | The detection device and detection method of the delay time of VR glasses |
| CN106644397B (en) * | 2016-12-16 | 2019-06-21 | 捷开通讯(深圳)有限公司 | The detection device and detection method of the delay time of VR device |
| CN106441810B (en) * | 2016-12-16 | 2019-07-26 | 捷开通讯(深圳)有限公司 | The detection device and detection method of the delay time of VR equipment |
| CN106596051B (en) * | 2016-12-19 | 2019-01-08 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of Airborne HUD and head show delayed test device and method |
| CN109584263B (en) * | 2017-09-25 | 2023-11-24 | 京东方科技集团股份有限公司 | Testing method and system of wearable device |
| CN109147059B (en) * | 2018-09-06 | 2020-09-25 | 联想(北京)有限公司 | Method and equipment for determining delay value |
| CN109696190B (en) * | 2018-12-29 | 2020-09-18 | 北京理工大学 | Method for measuring rotation delay of VR helmet based on gradient coding |
| CN109737997B (en) * | 2018-12-29 | 2020-10-20 | 北京理工大学 | Rotation delay measuring method of virtual reality head-mounted display equipment |
| CN109696189B (en) * | 2018-12-29 | 2020-10-23 | 北京理工大学 | Rotation delay measuring method of VR helmet based on encoder |
| CN109696191B (en) * | 2018-12-29 | 2020-06-30 | 北京理工大学 | Movement delay measurement method of virtual reality head-mounted display equipment |
| CN109696188B (en) * | 2018-12-29 | 2020-07-21 | 北京理工大学 | Rotation delay measuring method of VR helmet based on laser tube |
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| KR100753182B1 (en) * | 2001-07-05 | 2007-09-03 | (주)미디어스페이스 | Virtual reality system which has multi user interface and its controlling method |
| JP4481209B2 (en) * | 2005-04-08 | 2010-06-16 | 日本電信電話株式会社 | Electrical stimulation device and virtual reality sensation device |
| US7973786B2 (en) * | 2007-01-16 | 2011-07-05 | Motorola Solutions, Inc. | System and method for managing interaction in a virtual environment |
| KR101576294B1 (en) * | 2008-08-14 | 2015-12-11 | 삼성전자주식회사 | Apparatus and method to perform processing a sound in a virtual reality system |
| CN103268194B (en) * | 2013-04-18 | 2016-01-20 | 广州视睿电子科技有限公司 | A kind of method of testing and testing tool time delay of interactive intelligent tablet computer |
| US20160019720A1 (en) * | 2014-07-15 | 2016-01-21 | Ion Virtual Technology Corporation | Method for Viewing Two-Dimensional Content for Virtual Reality Applications |
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| WO2020107586A1 (en) * | 2018-11-26 | 2020-06-04 | 歌尔股份有限公司 | Detection system and method for parameters of optical module |
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