CN209103560U - A kind of Virtual Reality Training System can be used for ray DR image checking - Google Patents

Abstract

The utility model discloses a kind of Virtual Reality Training Systems that can be used for ray DR image checking, and to obtain the sequencing campaign of ray DR imaging detection technology, the utility model can be used for teaching purpose and professional purpose.The system includes ray detection environment scene, ray detection basic equipment, ray detection workpiece and VR glasses etc., and Virtual Reality Training System project file imports VR glasses with Unity document form, carries out actual experience and interaction by wearing VR glasses.

Description

A kind of Virtual Reality Training System can be used for ray DR image checking

Technical field

The utility model belongs to DIGITAL RADIOGRAPHIC TECHNOLOGY field, is related to a kind of ray DR image checking of can be used for Virtual Reality Training System.

Background technique

Ray DR technology based on flat panel detector is current state-of-the-art X-ray Testing Technology, and checked object may be implemented Digitlization ray detection, tool has been widely used.But it is with high content of technology, price, complicated for operation, to ray detection personnel Overall qualities require height, and ray, to testing staff's nocuousness, industry is interior, and there is an urgent need to the people for being engaged in digital radiography Member carries out practicing training on operation.

Traditional ray detection simulation software has the function of training on operation, but that there are testing staff's participations is not high not Foot, testing staff can not participate in the operation overall process of ray DR imaging detection technology, lack experience on the spot in person, that is, immerse Property and interactivity, this needs, which develops, a kind of novel practices operation training method.VR technology can be by computer in reality Object simulated in real time, for user present a three-dimensional Virtual Space.Simulated training be always both at home and abroad it is military with An important topic in aerospace industry, such as the SIMNET Virtual Battlefield system of US Department of Defense Advanced Research Projects Agency DARPA, Virtual operation etc. on engineering in medicine carries out various simulated trainings by VR technology, attempts to reduce accident by simulation training.

With the site environment of computer simulation non-destructive testing, arriving testing staff " involvement " by a variety of sensing equipments should It detects in environment, realizes that testing staff directly naturally interacts with detection environment, allow testing staff as being personally on the scene, It can observe in time, without limitation, detect things in three-dimensional space.The training of ray DR image checking is carried out using the characteristic System simulation not only can be convenient testing staff and carry out DR detection simulated operation in the case where not entering DR detection environment, mentions Before carry out operation implementation, be effectively reduced the unexpected of detection and occur, while can be detected in the unapproachable closing of personnel The operation of ambient conditions Imitating, designs effective detection scheme.

But the report that simultaneously no-trump virtual reality technology is combined with industrial x-ray DR imaging detection technology both at home and abroad at present Road, the training for being directed to ray DR image checking also stay in traditional teaching pattern.Due to hardware such as equipment, place, funds Limitation, utilize true ray DR imaging system carry out personnel's training on operation limited time, there is no independent detection training Systematic research.

Utility model content

The utility model is provided a kind of based on virtual reality skill by ray DR technology and the virtual reality technology of organically blending The ray DR image checking training system and its operating method of art, testing staff can obtain with really test cognition, Ray DR image checking staff training can more efficiently be carried out.

Its technical solution is as follows:

A kind of Virtual Reality Training System can be used for ray DR image checking, including ray detection environment scene, ray Detect basic equipment, ray detection workpiece 10 and VR glasses 30.Ray detection environment scene includes ray computer room 1, lead protection door 2, door-locking system 3, lead protection door switch 16, testing staff 28；Lead protection door 2, door-locking system 3, lead protection door switch 16 are installed It is imported and exported on wall in ray computer room 1.Ray detection basic equipment includes X-ray machine X 4, X-ray machine X rack 5, cooling system 6, height Press generator 7, power-supply system 8, mechanical clamp 11, flat panel detector 12, flat panel detector support 13, gigabit network cable and power supply line 14, control line 15, X-ray machine X console 17, computer 27, high-tension cable 29；X-ray machine X 4 is fixed in X-ray machine X rack 5, energy It moves in the vertical direction, flat panel detector 12 is fixed in flat panel detector support 13, is oppositely arranged with X-ray machine X 4, can be along vertical Histogram is to movement；X-ray machine X 4 is connect with high pressure generator 7 by high-tension cable 29, and high pressure generator 7 and power-supply system 8 are by electric wire By piping connection, X-ray machine X 4 is connect with X-ray machine X console 17 by control line 15 for connection, X-ray machine X 4 and cooling system 6；Ray Detection workpiece 10 is fixed between X-ray machine X 4 and flat panel detector 12 by mechanical clamp 11；Flat panel detector 12 and computer 27 It is connected by gigabit network cable 14.X-ray machine X 4 launches cone beam 9 when working, and cone beam disappears when stopping working, ray Testing staff 28 is located at 1 outside of ray computer room when machine 4 works.X-ray machine X console 17 is pressed including tube voltage key 18, tube current Key 19, time for exposure key 20, large and small focus actuator 21, X-ray machine X scram button 22, green ray key open 23, red Ray key closes 24, controller key 25, exposure parameter liquid crystal display 26；Tube voltage key 18, tube current key 19, exposure Time button 20, large and small focus actuator 21, X-ray machine X scram button 22, green ray key are opened 23, red ray key and are closed 24, controller key 25, exposure parameter liquid crystal display 26, orange lamp 31 are mounted on 17 suitable position of X-ray machine X console.It penetrates Line machine console 17 and computer 27 are located at the outside of ray computer room 1.

Further, cone beam could be emitted when the door-locking system works normally, penetrated when testing staff presses red When line key pass or X-ray machine X scram button, X-ray machine X stops working immediately.

Further, the flat panel detector is DR plate.

The utility model has the beneficial effects that

The utility model is compared with traditional software and hardware, and the necessary component of Virtual Reality Training System is whole in addition to VR glasses It is present in Virtual Space, ray DR image checking training process must be implemented by VR glasses.

Detailed description of the invention

Fig. 1 is the structural schematic diagram for the Virtual Reality Training System that the utility model can be used for ray DR image checking；

Fig. 2 is DR image calculation flow chart.

1, ray computer room in the figure, 2, lead protection door, 3, door-locking system, 4, X-ray machine X, 5, X-ray machine X rack, 6, cooling System, 7, high pressure generator, 8, power-supply system, 9, cone beam, 10, workpiece, 11, mechanical clamp, 12, flat panel detector, 13, flat panel detector support, 14, gigabit network cable and power supply line, 15, control line, 16, lead protection door switch, 17, X-ray machine X control Platform, 18, tube voltage key, 19, tube current key, 20, time for exposure key, 21, large and small focus actuator, 22, X-ray machine X urgency Stop button, 23, green ray key open, 24, red ray key close, 25, controller key, 26, exposure parameter liquid crystal display Screen, 27, computer, 28, testing staff, 29, high-tension cable, 30, VR glasses, 31, orange lamp.

Specific embodiment

The technical solution of the utility model is described in more detail with reference to the accompanying drawings and detailed description.

(1) as shown in Figure 1, the Virtual Reality Training System that can be used for ray DR image checking includes ray detection environment field Scape, ray detection basic equipment, ray detection workpiece 10, functions of the equipments design ask friendship, DR image with realization, beam and workpiece Calculating, control system and VR glasses 30.Ray detection environment scene includes ray computer room 1, lead protection door 2, door-locking system 3, lead Protect door switch 16, testing staff 28.Basic equipment includes X-ray machine X 4, X-ray machine X rack 5, cooling system 6, high pressure generator 7, power-supply system 8, mechanical clamp 11, flat panel detector 12, flat panel detector support 13, gigabit network cable and power supply line 14, control Line 15, X-ray machine X console 17, computer 27, high-tension cable 29.

(2) according to ray detection laboratory scene, detecting field is directly carried out in Unity3D engine platform in 1:1 ratio Then scape three-dimensional modeling carries out material color applying to detection scene, restores ray computer room scene.

(3) in kind referring to ray detection laboratory basic equipment, using 3Dmax 3 d modeling software in 1:1 ratio into The three-dimensional modeling of the basic equipments models such as row X-ray machine X 4, flat panel detector 12, mechanical clamp 11 and X-ray machine X console 17, is penetrated Line machine 4 presses cylinder volume modeling, and flat panel detector 12 presses 200 μm of 200 μ m of unit size, and imaging array 1024 × 1024 models, X-ray machine X console is modeled by function button and liquid crystal display.Textures are rendered after basic equipment model modeling, are made outside it Sight is consistent with material object.All basic equipment model files are exported as into FBX format and are stored in Unity3D engine platform wound In Assets file under the detection scene project file folder built, the detecting field built in Unity3D is imported as Assets In scape, placement position is adjusted according to the object's position setting device model coordinate in reality.

(4) referring to ray detection workpiece material object 10, the three-dimensional modeling of workpiece, model file storage are carried out in the ratio of 1:1 For STL format.

(5) C# code is write in Unity3D platform, successively realizes following functions.Testing staff enters X-ray machine X operating room Before press lead protection door switch 16 on lead protection door, press " enabling " button, i.e., openable radiation protection lead door；It is pressed by " shutdown " Button can close protective lead door；Testing staff 28 grabs detection workpiece 10, installs workpiece before going to mechanical clamp 11 parallel, into Row transillumination arrangement, by any rotation that triangular apex is realized to STL format model along the spherical coordinates rotation of setting；In ray Focal spot size regulatory function key is arranged in large and small focus actuator on machine console 17, while tube voltage key 18, pipe electricity is arranged It flows the exposure parameters such as key 19, time for exposure key 20 and inputs key；When all parameter settings of X-ray machine X console finish, click Ray key "ON" starts to work triggering X-ray machine X 4, and the cone beam 9 that transmitting cone angle is 40 degree, ray is arrived across workpiece Up to flat panel detector 12, the orange lamp 31 of X-ray machine X console is always on orange light and flashes until the time for exposure ties during ray emission Beam.

(6) m × m unit is turned to by flat panel detector is discrete, unit size is set as a (unit: mm).

(7) center for connecting radiographic source center and each detector cells, determines ray l according to centre coordinate, reads Part model STL formatted file is detected, all triangular apex information, cycle calculations ray l and each triangle are obtained Intersection point, and whether intersection point is verified in triangle interior.Determine whether according to intersection point number is generated containing defective or cavity.

If (a) do not have intersection point, ray is not passed through workpiece；

If (b) only one intersection point, ray passes through a certain marginal position of workpiece just；

If (c) there are two intersection points, ray passes through the upper and lower surfaces of workpiece just, without internal flaw；

(d) if there is more than two intersection points, then judge inside workpiece existing defects or cavity.

(8) to same ray l, all intersection points in triangle interior are collected, antinode is carried out by negative direction of the x-axis coordinate Sequence.When intersection point number < 2, ray penetration length T=0；When intersection point number >=2, beam l is successively obtained in workpiece Segmentation penetration length be calculated as follows and currently penetrate according to line attenuation coefficient of the different workpieces material under different ray energies The radiation attenuation value I of harness.

(9) (7)-(8) are repeated, is finished until the radiation attenuation value of all detector cells all calculates.By m × m A radiation attenuation value combination is arranged in a matrix, and generates DR image according to Linear Mapping.

(10) above-mentioned work is integrated into Unity3D engine, in the ray computer room model of place in Unity3D engine Readjustment finds intersection algorithm, obtains the DR image of current location, and debugging is completed.

(11) debugging finish, by project file with Unity document form import Hololens glasses, carry out actual experience and Interaction.

The preferable specific embodiment of the above, only the utility model, the protection scope of the utility model are not limited to This, anyone skilled in the art can become apparent in the technical scope that the utility model discloses Technical solution simple change or equivalence replacement each fall in the protection scope of the utility model.

Claims (2)

1. a kind of Virtual Reality Training System that can be used for ray DR image checking, it is characterised in that: including ray detection environment Scene, ray detection basic equipment, ray detection workpiece and VR glasses；Ray detection environment scene includes that ray computer room, lead are anti- Door, door-locking system, lead protection door switch, testing staff are protected, lead protection door, door-locking system, lead protection door switch are mounted on ray Computer room is imported and exported on wall；Ray detection basic equipment includes X-ray machine X, X-ray machine X rack, cooling system, high pressure generator, electricity Source system, mechanical clamp, flat panel detector, flat panel detector support, gigabit network cable and power supply line, control line, X-ray machine X control Platform, computer, high-tension cable, X-ray machine X are fixed in X-ray machine X rack, can be moved in the vertical direction, flat panel detector is fixed on It in flat panel detector support, is oppositely arranged, can move in the vertical direction with X-ray machine X；X-ray machine X and high pressure generator are by high-voltage electricity Cable connection, high pressure generator and power-supply system are connected by electric wire, and X-ray machine X and cooling system are by piping connection, X-ray machine X and ray Console is connected by control line；Ray detection workpiece is fixed on the suitable position of X-ray machine X and flat panel detector by mechanical clamp； Flat panel detector and computer are connected by gigabit network cable；X-ray machine X launches cone beam when working, taper when stopping working Beam disappears, and testing staff is located at outside ray computer room when X-ray machine X works；X-ray machine X console includes tube voltage key, pipe Electric current key, time for exposure key, large and small focus actuator, X-ray machine X scram button, green ray key open, red ray Key pass, controller key, exposure parameter liquid crystal display；It is tube voltage key, tube current key, time for exposure key, large and small Focus actuator, X-ray machine X scram button, green ray key open, red ray key pass, controller key, exposure parameter liquid Crystal display screen is mounted on X-ray machine X console suitable position；X-ray machine X console and computer bit are in the outside of ray computer room.

2. the Virtual Reality Training System according to claim 1 that can be used for ray DR image checking, it is characterised in that:

The flat panel detector is image amplifier or DR plate.