CN111281334A

CN111281334A - Automatic tracking system for human eyes of computer optometry instrument

Info

Publication number: CN111281334A
Application number: CN202010140238.XA
Authority: CN
Inventors: 刘建初; 王继帅; 吴义清; 吴凡
Original assignee: Anhui Jumu Optical Technology Development Co Ltd
Current assignee: Anhui Jumu Optical Technology Development Co Ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-06-16

Abstract

The invention belongs to the technical field of medical optometry equipment, in particular to an automatic human eye tracking system of a computer optometry instrument, which comprises a display screen, a tester and a base; one side of the second sliding block, which is far away from the second sliding groove, is fixedly connected with a tester; the display screen is arranged on one side, far away from the second sliding block, of the tester through a support; a testing lens is arranged on one side of the tester away from the display screen; an information collection module, a test module and a data processing module are arranged in the tester; the information collection module collects face information through a camera and transmits the face information to the data processing module; the testing module is used for testing the degree of human eyes in cooperation with the testing lens; the data processing module is used for receiving information and transmitting the information to the display screen through an electric signal; the invention collects face information through an information collecting module in the tester, and then controls the rotation of the first stepping motor, the second stepping motor and the third stepping motor through electric signals, thereby quickly aligning the testing lens to human eyes.

Description

Automatic tracking system for human eyes of computer optometry instrument

Technical Field

The invention belongs to the technical field of medical optometry equipment, and particularly relates to an automatic human eye tracking system of a computer optometry instrument.

Background

The prior computer optometry instrument adopts an objective measurement mode, an infrared image is projected to the eye ground of a person to generate a scattering image on the retina of the eye of the person, the diopter of the eye is objectively calculated by analyzing a measurement image acquired by CXD, an operator lightly controls the front, back, left, right, upper and lower movements of the instrument with a hand during measurement to capture the pupil of the eye of the person to be measured, the pupil is aligned with the pupil of an eyeball, a measurement key is pressed down, a measurement result can be immediately displayed on a screen, the accuracy of the computer optometry instrument is influenced by a plurality of factors, such as the head and the eye of the person to be measured are not well matched, the eye looks at the inner target of the optometry instrument insufficiently concentrated, so that relaxation adjustment is insufficient, the accuracy of a diopter inspection result is inevitably influenced, even the diopter difference of repeated inspection is larger, particularly for children patients, the error of the test of the computer optometry instrument is larger, even the diopter, therefore, the existing computer optometry has extremely high requirements on operators, and the operators still need to pay attention to the matching conditions of the testee all the time while operating the instruments skillfully, and can obtain accurate measurement results only by quickly completing system actions such as capturing, aligning, keying and the like.

Chinese patent issued's a full-automatic computerized optometry appearance, patent number 201520329879, including the controller main part, characterized by is equipped with small-size display screen in controller main part front side, small-size display screen front side is equipped with position control pole, fixed knob around position control pole right side is equipped with, small-size display screen rear side is equipped with the imaging panel, the imaging panel rear side is equipped with the information processing chip, information processing chip upside is equipped with information receiver, information processing chip downside is equipped with internal memory, the internal memory rear side is equipped with the net twine interface, controller main part downside is equipped with the sliding column, the sliding column downside is equipped with the optometry appearance base, optometry appearance base downside is equipped with the support column. This simple structure, convenient to use can make medical staff convenient to carry out the optometry to the patient fast, has alleviateed medical personnel's the work degree of difficulty, nevertheless can't carry out the position change when this optometry appearance uses, thereby needs artifical change angle of initiative to look for best test angle, and the test result precision is not enough, and testing error is great.

In view of the above, the present company has developed an automatic eye tracking system for a computer optometry unit, which is used to solve the above problems.

Disclosure of Invention

The invention provides an automatic eye tracking system of a computer optometry instrument, which aims to make up the defects of the prior art and solve the problems that the prior computer optometry instrument can accurately test only by the precise matching of testers and the prior computer optometry instrument is easy to generate errors due to the shaking of the head during optometry.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an automatic tracking system for human eyes of a computer optometry instrument, which comprises a touch screen, a tester and a base, wherein the touch screen is arranged on the base; the upper surface of the base is fixedly connected with a support column through a bolt; the support columns are arranged in a hollow mode; one side of the support column close to the base is fixedly connected with a first stepping motor; a first lead screw is rotatably connected inside the supporting column; the rotating shaft of the first stepping motor penetrates through the supporting column; the rotating shaft of the first stepping motor is positioned in the cavity of the support column, and one end of the rotating shaft is fixedly connected with the first lead screw; a movable column is connected inside the supporting column cavity in a sliding manner; the moving column is in threaded connection with the first lead screw; the movable column extends out of the inner cavity of the support column; one end of the movable column, which is positioned outside the inner cavity of the support column, is fixedly connected with a first sliding table; a first sliding chute is formed in the first sliding table; a second lead screw is rotatably connected inside the first sliding chute; one side of the first sliding table, which is close to the moving column, is fixedly connected with a first power box; a second stepping motor is fixedly connected in the first power box; the rotating shaft of the second stepping motor penetrates through the first power box; the rotating shaft of the second stepping motor is positioned at one end outside the first power box and is in transmission with the second lead screw through a belt pulley; the second lead screw is positioned in the first sliding chute and is connected with a first sliding block through threads; one side of the first sliding block, which is far away from the first sliding chute, is fixedly connected with a second sliding table; a second sliding chute is formed in one side, away from the first sliding table, of the second sliding table; the second sliding groove and the first sliding groove are arranged at an angle of 90 degrees in the horizontal direction; a third screw rod is rotationally connected in the second sliding groove; one side of the second sliding table, which is close to the first sliding table, is fixedly connected with a second power box; the second power box is fixedly connected with a third stepping motor; the third stepping motor and a third lead screw are in transmission through a belt pulley; the third screw rod is positioned in the second sliding groove and is connected with a second sliding block in a threaded manner; one side of the second sliding block, which is far away from the second sliding groove, is fixedly connected with a tester; the touch screen is arranged on one side, far away from the second sliding block, of the tester through a support; a testing lens is arranged on one side of the tester away from the touch screen; an information collection module, a test module and a data processing module are arranged in the tester; the information collection module collects face information through a camera and then transmits the face information to the data processing module; the testing module is used for testing the degree of human eyes in cooperation with the testing lens; the data processing module is used for receiving information and transmitting the information to the touch screen through an electric signal;

when the tester works, a computer photometer program is positioned in an automatic testing module by using a touch screen, an information collecting module positioned in the tester automatically collects face information through a camera, the information is transmitted to a data processing module, the data processing module determines the position of a human eye and then determines the moving distance, a signal is transmitted to a first stepping motor, the first stepping motor rotates, so that a first lead screw fixedly connected with the first stepping motor rotates in an inner cavity of a supporting column at a constant speed, the first lead screw rotating at the constant speed slides in the inner cavity of the supporting column through the meshing between threads, the moving column can be controlled to slide up and down in the inner cavity of the supporting column by controlling the forward rotation and the reverse rotation of the first stepping motor, the tester is effectively moved up and down, a second stepping motor in a first power box is controlled to rotate, the second stepping motor drives a second lead screw to rotate at a constant speed through the transmission of a belt pulley, the second screw rod rotating at a constant speed drives the first sliding block to rotate at a constant speed in the first sliding groove through threaded engagement, so that the tester fixed in relative position with the first sliding block can move back and forth relative to the base, the third stepping motor in the second power box is controlled to rotate at the same time, the third stepping motor drives the third screw rod to rotate at a constant speed through the transmission of a belt pulley, the third screw rod rotating at a constant speed drives the second sliding block to rotate at a constant speed in the second sliding groove through threaded engagement, so that the tester fixed in relative position with the second sliding block can move back and forth relative to the base, the first stepping motor, the second stepping motor and the third stepping motor are rotated at the same time, the tester can effectively move freely in three axes of X, Y, Z relative to the base, and the test lens on the tester can be quickly aligned with human eyes to be measured, meanwhile, the focusing function in the computer and the test module in the tester are matched, data measurement can be rapidly carried out on human eyes, and compared with a manual alignment test lens for testing, the three-degree-of-freedom automatic human eye alignment function enables the test of the computer photometer to be faster and more accurate, and meanwhile, the belt pulley is used for transmission, so that the tester is more stable and higher in precision when horizontally moved left and right and back and forth, and the test precision is effectively improved.

Preferably, one end of the moving column close to the first sliding table is fixedly connected with an auxiliary plate; the lower surface of one end of the auxiliary plate, which is far away from the moving column, is fixedly connected with an air cylinder; the extending end of the cylinder penetrates through the auxiliary plate and is fixedly connected with a forehead support; the forehead support is of an irregular annular structure and is used for fixing the head of a tester during testing;

when the tester works, the moving column moves up and down relative to the supporting column through the rotation of the first stepping motor, the moving column drives the auxiliary plate to move in the same direction when moving up and down, so that the forehead support moves up and down, the forehead support moves to the equal horizontal position of the head of the tester, the tester puts the head into the forehead support, so that the camera positioned in the tester can quickly acquire information of a human face, when the information is transmitted back, the tester is translated in the front-back and left-right directions through the second stepping motor and the third stepping motor, so that the tester can quickly align the testing lens to the eyes of a person to be tested, and simultaneously, after the head is put into the forehead support due to the distance difference of the eyes, when the eyes to be tested are not at the same position with the testing lens in the vertical direction, the air cylinder works through a signal fed back by the data processing module, so that the vertical position of the forehead support, and then make the position more accurate between personnel and the test camera lens to strengthen the precision to people's eye test.

Preferably, a third sliding groove is formed in the forehead support corresponding to the chin; the third sliding chute is in a T-shaped design; a chin rest is arranged in the third sliding groove; a fourth sliding groove is formed in the two sides of the forehead support close to the third sliding groove; the fourth sliding groove is communicated with the third sliding groove; a rotating rod is hinged in the fourth sliding groove; the number of the rotating rods is two, and the rotating rods are symmetrically designed; the during operation, put into the forehead with the head and hold in the palm, the chin is placed and is held in the palm the chin to the inside extrusion of third spout, thereby make chin rest extrusion dwang, the dwang rotates the centre gripping in the head both sides, thereby the edgewise is fixed the head, especially to younger child, can prevent effectively that its head from rocking when measuring, thereby influence measuring precision, the settlement that the chin rest can reciprocate simultaneously can also play the effect of fine setting when focusing eyes of people and test camera lens.

Preferably, the surface of one side, opposite to the two rotating rods, is wrapped with a rubber layer; the during operation, the chin is being held in the palm the extrusion to the chin to make the dwang rotate in the fourth spout, thereby make the dwang centre gripping play fixed effect in head both sides to the head, the parcel can increase effectively with the area of contact of head on the rubber layer on dwang surface this moment, make fixed effect more obvious, rubber layer and head soft contact simultaneously can also improve tester's use body and feel, the travelling comfort of reinforcing device.

Preferably, one end of the tester, which is far away from the touch screen, is provided with symmetrically designed fifth sliding chutes; the fifth sliding grooves are all connected with test lenses in a sliding manner; a shading ring is fixedly connected to one side of the test lens, which is far away from the tester; the shading ring is made of elastic rubber material; a double-end electric push rod is fixedly connected between the two fifth sliding grooves; the during operation, the tester places the head in the volume holds in the palm, the dwang of both sides is held in the palm the extrusion by the chin and is fixed the head, information acquisition module is with facial information transmission to information processing module this moment, and then adjust the tester position, make two test camera lenses aim at with people's eye, test two eyes simultaneously, can effectually accelerate test speed, double-end electric putter's settlement can be effectively to adjusting between two test camera lenses simultaneously, thereby make the error between test camera lens and the people's eye littleer, and the settlement of anti-dazzling ring can make test camera lens and the soft contact of people's face portion on the one hand, on the other hand shelters from disturbing light, make the test result more accurate.

Preferably, the forehead support is fixedly connected with a smooth iron sheet corresponding to the forehead part; the during operation is placed the forehead on the iron sheet, utilizes the lower temperature of indisputable piece ice to make the tester produce the stimulated reaction to quick messenger's tester attention is concentrated, makes the pupil focus, thereby makes the test result more accurate.

The invention has the following beneficial effects:

1. according to the automatic eye tracking system of the computer optometry instrument, the first stepping motor, the second stepping motor and the third stepping motor are arranged to control the first lead screw, the second lead screw and the third lead screw to rotate forwards and backwards so that the computer optometry instrument can move in three degrees of freedom, and the information acquisition module in the tester can be used for rapidly aligning the tester with the eyes of a person to be measured, so that errors in manual operation are reduced, and the test result is more accurate.

2. According to the automatic tracking system for the human eyes of the computer optometry instrument, the forehead support, the chin support and the rotating rod are arranged, the rotating rod is extruded by utilizing the downward movement of the chin support, the rotating rod rotates in the fourth sliding groove, the rotating rod is clamped on two sides of the head, and the head is fixed, so that the problem that the precision of a test result is reduced due to the shaking of the head during testing is solved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a front view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a cross-sectional view of the forehead rest;

in the figure: the device comprises a touch screen 1, a tester 2, a base 3, a support column 4, a first stepping motor 41, a first lead screw 42, a moving column 43, a first sliding table 5, a first sliding groove 51, a second lead screw 52, a first power box 53, a second stepping motor 54, a first sliding block 55, a second sliding table 6, a second sliding groove 61, a third lead screw 62, a second power box 63, a third stepping motor 64, a second sliding block 65, an auxiliary plate 7, a cylinder 71, a forehead support 72, a third sliding groove 73, a chin support 74, a fourth sliding groove 75, a rotating rod 76, a fifth sliding groove 8, a test lens 81 and a shading ring 82.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 3, the automatic tracking system for human eyes of a computer optometry instrument comprises a touch screen 1, a tester 2 and a base 3; the upper surface of the base 3 is fixedly connected with a support column 4 through a bolt; the support column 4 is arranged in a hollow manner; one side of the supporting column 4 close to the base 3 is fixedly connected with a first stepping motor 41; a first lead screw 42 is rotatably connected inside the supporting column 4; the rotating shaft of the first stepping motor 41 penetrates through the supporting column 4; the rotating shaft of the first stepping motor 41 is positioned at one end in the cavity of the support column 4 and fixedly connected with a first lead screw 42; a movable column 43 is connected inside the cavity of the support column 4 in a sliding manner; the moving column 43 is in threaded connection with the first lead screw 42; the movable column 43 extends to the outside of the inner cavity of the support column 4; one end of the movable column 43, which is positioned outside the inner cavity of the support column 4, is fixedly connected with a first sliding table 5; a first sliding chute 51 is formed in the first sliding table 5; a second screw 52 is rotatably connected inside the first chute 51; a first power box 53 is fixedly connected to one side of the first sliding table 5 close to the moving column 43; the first power box 53 is fixedly connected with a second stepping motor 54; the rotating shaft of the second stepping motor 54 penetrates through the first power box 53; the rotating shaft of the second stepping motor 54 is positioned at one end outside the first power box 53 and is in transmission with the second lead screw 52 through a belt pulley; the second lead screw 52 is positioned in the first sliding groove 51 and is connected with a first sliding block 55 through threads; one side of the first sliding block 55, which is far away from the first sliding groove 51, is fixedly connected with a second sliding table 6; a second sliding chute 61 is formed in one side, away from the first sliding table 5, of the second sliding table 6; the second sliding groove 61 and the first sliding groove 51 are arranged at 90 degrees in the horizontal direction; a third lead screw 62 is rotatably connected in the second sliding groove 61; one side of the second sliding table 6, which is close to the first sliding table 5, is fixedly connected with a second power box 63; the second power box 63 is fixedly connected with a third stepping motor 64; the third stepping motor 64 and the third lead screw 62 are in transmission through a belt pulley; a second sliding block 65 is connected to the third lead screw 62 in the second sliding groove 61 through an internal thread; one side of the second sliding block 65, which is far away from the second sliding groove 61, is fixedly connected with the tester 2; the touch screen 1 is arranged on one side, far away from the second sliding block 65, of the tester 2 through a bracket; a testing lens 81 is arranged on one side of the tester 2 away from the touch screen 1; an information collection module, a test module and a data processing module are arranged in the tester 2; the information collection module collects face information through a camera and then transmits the face information to the data processing module; the testing module is used for testing the degree of human eyes by matching with the testing lens 81; the data processing module is used for receiving information and transmitting the information to the touch screen 1 through an electric signal;

when the tester works, a computer photometer program is positioned in an automatic testing module by using the touch screen 1, an information collecting module positioned in the tester 2 automatically collects face information through a camera, then the information is transmitted to a data processing module, the data processing module determines the position of a human eye and then determines the moving distance, a signal is transmitted to a first stepping motor 41, the first stepping motor 41 rotates, so that a first lead screw 42 fixedly connected with the first stepping motor 41 rotates in the inner cavity of a supporting column 4 at a constant speed, the first lead screw 42 rotating at the constant speed slides in the inner cavity of the supporting column 4 through the meshing between threads, the moving column 43 can be controlled to slide up and down in the inner cavity of the supporting column 4 by controlling the forward rotation and the reverse rotation of the first stepping motor 41, the tester 2 is effectively moved up and down, and meanwhile, a second stepping motor 54 in a first power box 53 is controlled to rotate, the second stepping motor 54 drives the second lead screw 52 to rotate at a constant speed through the transmission of a belt pulley, the second lead screw 52 rotating at a constant speed drives the first sliding block 55 to rotate at a constant speed in the first sliding groove 51 through threaded engagement, so that the tester 2 fixed in position relative to the first sliding block 55 can move back and forth relative to the base 3, and simultaneously controls the third stepping motor 64 in the second power box 63 to rotate, the third stepping motor 64 drives the third lead screw 62 to rotate at a constant speed through the transmission of the belt pulley, the third lead screw 62 rotating at a constant speed drives the second sliding block 65 to rotate at a constant speed in the second sliding groove 61 through threaded engagement, so that the tester 2 fixed in position relative to the second sliding block 65 can move back and forth relative to the base 3, and simultaneously rotates the first stepping motor 41, the second stepping motor 54 and the third stepping motor 64, can make tester 2 carry out X, Y, Z triaxial free movement for base 3 effectively, thereby the quick test lens 81 with on the tester 2 aims at the measuring people's eye that awaits measuring, the function of focusing in the cooperation computer simultaneously and the test module in the tester 2, can be quick carry out data measurement to the people's eye, compare and aim at test lens 81 in the manual work and test, the automatic people's eye of three degrees of freedom aims at the function and makes the test of computer photometer quicker, it is accurate, use the belt pulley to transmit simultaneously, make tester 2 about, more steady when the front and back translation, the precision is higher, thereby improve the test precision effectively.

As an embodiment of the present invention, an auxiliary plate 7 is fixedly connected to one end of the moving column 43 close to the first sliding table 5; the lower surface of one end of the auxiliary plate 7, which is far away from the moving column 43, is fixedly connected with an air cylinder 71; the extending end of the cylinder 71 penetrates through the auxiliary plate 7 and is fixedly connected with a forehead support 72; the forehead support 72 is of an irregular annular structure and is used for fixing the head of a tester during testing;

when the tester works, the moving column 43 moves up and down relative to the supporting column 4 through the rotation of the first stepping motor 41, the moving column 43 drives the auxiliary plate 7 to move in the same direction when moving up and down, so that the forehead support 72 moves up and down, the forehead support 72 moves to the equal horizontal position of the head of the tester, the tester puts the head into the forehead support 72, so that the camera positioned in the tester 2 can quickly acquire information of the human face, when the information is transmitted back, the tester 2 is translated in the front-back and left-right directions through the second stepping motor 54 and the third stepping motor 64, so that the tester 81 can be quickly aligned with the eyes of the person to be measured, and simultaneously, after the head is put into the forehead support 72 due to the distance difference of the human eyes, when the eyes to be measured are not at the same position with the tester 81 in the vertical direction, the air cylinder 71 works through the signal fed back by the data processing module, therefore, the position of the forehead support 72 in the vertical direction is adjusted, so that the position between a person and the test lens 81 is more accurate, and the accuracy of human eye test is enhanced.

As an embodiment of the present invention, a third sliding slot 73 is formed at a position of the forehead support 72 corresponding to the chin; the third sliding groove 73 is in a T-shaped design; a chin rest 74 is arranged in the third sliding groove 73; a fourth sliding groove 75 is formed in the two sides of the forehead support 72 close to the third sliding groove 73; the fourth chute 75 is communicated with the third chute 73; a rotating rod 76 is hinged in the fourth sliding groove 75; the number of the rotating rods 76 is two, and the rotating rods are symmetrically designed; during operation, put into the forehead with the head and hold in the palm 72 in, the chin is placed and is held in the palm 74 with the chin to the inside extrusion of third spout 73 on the chin rest, thereby make chin rest 74 extrusion dwang 76, the dwang 76 rotates the centre gripping in the head both sides, thereby fix the head from the side, especially to younger child, can prevent effectively that its head from rocking when measuring, thereby influence measuring precision, the setting that chin rest 74 can reciprocate simultaneously can also be to the effect that fine setting was played when focusing with test lens 81 to the people's eye.

In one embodiment of the present invention, the opposite surfaces of the two rotating rods 76 are covered with rubber layers; the during operation, the chin is being pushed the chin rest 74 to make dwang 76 rotate in fourth spout 75, thereby make the dwang 76 centre gripping play fixed effect in the head both sides, the parcel can increase effectively with the area of contact of head on the rubber layer on dwang 76 surface this moment, make fixed effect more obvious, rubber layer and head soft contact simultaneously can also improve tester's use body and feel, the travelling comfort of reinforcing device.

As an embodiment of the invention, one end of the tester 2, which is far away from the touch screen 1, is provided with symmetrically designed fifth sliding chutes 8; the fifth sliding grooves 8 are all connected with test lenses 81 in a sliding manner; a shading ring 82 is fixedly connected to one side of the test lens 81, which is far away from the tester 2; the shading ring 82 is made of elastic rubber material; a double-end electric push rod is fixedly connected between the two fifth sliding grooves 8; during operation, the tester places the head in the forehead holds in the palm 72, the dwang 76 of both sides is held in the palm 74 extrusion by the chin and is fixed the head, information acquisition module is with facial information transmission to information processing module this moment, and then adjust tester 2 positions, make two test camera lens 81 aim at with people's eye, test two eyes simultaneously, can effectual quickening test speed, double-end electric putter's settlement can be effectively to adjusting between two test camera lens 81 simultaneously, thereby make the error between test camera lens 81 and the people's eye littleer, and the settlement of anti-dazzling ring 82 can make test camera lens 81 and people's face soft contact on the one hand, on the other hand shelters from disturbing light, make the test result more accurate.

As an embodiment of the invention, a smooth iron sheet is fixedly connected to the forehead support 72 corresponding to the forehead part; the during operation is placed the forehead on the iron sheet, utilizes the lower temperature of indisputable piece ice to make the tester produce the stimulated reaction to quick messenger's tester attention is concentrated, makes the pupil focus, thereby makes the test result more accurate.

The specific working process is as follows:

when the tester works, a computer photometer program is positioned in an automatic testing module by using the touch screen 1, an information acquisition module positioned in the tester 2 automatically acquires face information through a camera, then the information is transmitted to a data processing module, the data processing module determines the position of a human eye and then determines the moving distance, a signal is transmitted to a first stepping motor 41, the first stepping motor 41 rotates, so that a first lead screw 42 fixedly connected with the first stepping motor 41 rotates in the inner cavity of a supporting column 4 at a constant speed, the first lead screw 42 rotating at the constant speed slides in the inner cavity of the supporting column 4 through the meshing between threads, the moving column 43 can be controlled to slide up and down in the inner cavity of the supporting column 4 by controlling the forward rotation and the reverse rotation of the first stepping motor 41, the tester 2 is effectively moved up and down, and meanwhile, a second stepping motor 54 in a first power box 53 is controlled to rotate, the second stepping motor 54 drives the second lead screw 52 to rotate at a constant speed through the transmission of a belt pulley, the second lead screw 52 rotating at a constant speed drives the first sliding block 55 to rotate at a constant speed in the first sliding groove 51 through threaded engagement, so that the tester 2 fixed in relative position with the first sliding block 55 can move back and forth relative to the base 3, and simultaneously controls the third stepping motor 64 in the second power box 63 to rotate, the third stepping motor 64 drives the third lead screw 62 to rotate at a constant speed through the transmission of the belt pulley, the third lead screw 62 rotating at a constant speed drives the second sliding block 65 to rotate at a constant speed in the second sliding groove 61 through threaded engagement, so that the tester 2 fixed in relative position with the second sliding block 65 can move back and forth relative to the base 3, a tester places the head in the forehead support 72, and the rotating rods 76 at both sides are pressed by the chin support 74 to fix the head, at this time, the information acquisition module transmits the facial information to the information processing module, and then adjusts the position of the tester 2, so that the two test lenses 81 are aligned with human eyes.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A computer optometry appearance people eye automatic tracking system which characterized in that: comprises a touch screen (1), a tester (2) and a base (3); the upper surface of the base (3) is fixedly connected with a support column (4) through a bolt; the supporting columns (4) are arranged in a hollow mode; one side of the supporting column (4) close to the base (3) is fixedly connected with a first stepping motor (41); a first lead screw (42) is rotatably connected inside the supporting column (4); the rotating shaft of the first stepping motor (41) penetrates through the supporting column (4); the rotating shaft of the first stepping motor (41) is positioned in the cavity of the supporting column (4), and one end of the rotating shaft is fixedly connected with a first lead screw (42); a movable column (43) is connected in the cavity of the support column (4) in a sliding manner; the moving column (43) is in threaded connection with the first lead screw (42); the movable column (43) extends out of the inner cavity of the support column (4); one end of the movable column (43) positioned outside the inner cavity of the support column (4) is fixedly connected with a first sliding table (5); a first sliding chute (51) is formed in the first sliding table (5); a second screw rod (52) is rotatably connected inside the first sliding groove (51); one side of the first sliding table (5) close to the moving column (43) is fixedly connected with a first power box (53); a second stepping motor (54) is fixedly connected in the first power box (53); the rotating shaft of the second stepping motor (54) penetrates through the first power box (53); the rotating shaft of the second stepping motor (54) is positioned at one end outside the first power box (53) and is in transmission with the second lead screw (52) through a belt pulley; the second lead screw (52) is positioned in the first sliding groove (51) and is connected with a first sliding block (55) through threads; one side of the first sliding block (55) far away from the first sliding chute (51) is fixedly connected with a second sliding table (6); a second sliding chute (61) is formed in one side, away from the first sliding table (5), of the second sliding table (6); the second sliding groove (61) and the first sliding groove (51) are arranged at an angle of 90 degrees in the horizontal direction; a third screw rod (62) is rotationally connected with the second sliding groove (61); one side of the second sliding table (6) close to the first sliding table (5) is fixedly connected with a second power box (63); a third stepping motor (64) is fixedly connected in the second power box (63); the third stepping motor (64) and a third lead screw (62) are in transmission through a belt pulley; the third screw rod (62) is positioned in the second sliding groove (61) and is connected with a second sliding block (65) in a threaded manner; one side of the second sliding block (65), which is far away from the second sliding groove (61), is fixedly connected with a tester (2); the touch screen (1) is arranged on one side, far away from the second sliding block (65), of the tester (2) through a support; a testing lens (81) is arranged on one side of the tester (2) far away from the touch screen (1); an information collection module, a test module and a data processing module are arranged in the tester (2); the information collection module collects face information through a camera and then transmits the face information to the data processing module; the testing module is used for testing the degree of human eyes by matching with a testing lens (81); the data processing module is used for receiving information and transmitting the information to the touch screen (1) through an electric signal.

2. The computerized optometry instrument human eye automatic tracking system of claim 1, wherein: one end of the moving column (43) close to the first sliding table (5) is fixedly connected with an auxiliary plate (7); the lower surface of one end of the auxiliary plate (7) far away from the moving column (43) is fixedly connected with an air cylinder (71); the extending end of the cylinder (71) penetrates through the auxiliary plate (7); the extension end of the cylinder (71) is positioned at one end of the upper surface of the auxiliary plate (7) and is fixedly connected with a forehead support (72); the forehead support (72) is of an irregular annular structure and is used for fixing the head of a tester during testing.

3. The computerized optometry instrument human eye automatic tracking system of claim 2, wherein: a third sliding groove (73) is formed in the forehead support (72) corresponding to the chin; the third runner (73) is of T-shaped design; a chin rest (74) is arranged in the third sliding groove (73); a fourth sliding chute (75) is formed in the two sides of the forehead support (72) close to the third sliding chute (73); the fourth sliding chute (75) is communicated with the third sliding chute (73); a rotating rod (76) is hinged in the fourth sliding groove (75); the number of the rotating rods (76) is two, and the rotating rods are symmetrically designed.

4. The computerized optometry instrument human eye automatic tracking system of claim 3, wherein: the surface of one side of each of the two rotating rods (76) opposite to each other is wrapped with a rubber layer.

5. The computerized optometry instrument human eye automatic tracking system of claim 1, wherein: one end of the tester (2) far away from the touch screen (1) is provided with symmetrically designed fifth sliding chutes (8); the fifth sliding grooves (8) are internally and respectively connected with a test lens (81) in a sliding manner; a shading ring (82) is fixedly connected to one side of the test lens (81) far away from the tester (2); the shading ring (82) is made of elastic rubber material; and a double-end electric push rod is fixedly connected between the two fifth sliding grooves (8).

6. The computerized optometry instrument human eye automatic tracking system of claim 2, wherein: the forehead support (72) is fixedly connected with a smooth iron sheet corresponding to the forehead part.