Portable visual rod cell dark adaptation function inspection device and use method

Abstract

The invention discloses a portable rod cell dark adaptation function inspection device and a using method, the portable rod cell dark adaptation function inspection device comprises an inspection terminal, a relay box and a transponder, the inspection terminal comprises a light-shading eyeshade, a bright view field and a display bin, the rear end of the bright view field is connected with the light-shading eyeshade, the front end of the bright view field is connected with the display bin, and the front and rear ends of the bright view field and the light-shading eyeshade are open; the rear end of the display bin is provided with an opening and is communicated with the bright view field, the display bin is internally connected with a sighting mark module, a brightness switching module and a camera, and a response result of a detected person is recorded and automatically detected by selecting automatic comparison with a pattern displayed by the display screen through the transponder. According to the invention, rapid dark adaptation inspection can be simultaneously carried out on multiple devices suitable for multiple persons, the brightness of a sighting mark can be adjusted during testing through the moving module, and the eye closing state of the tested person in the bright adaptation process is monitored through the camera.

Description

Technical Field

[0001] The invention belongs to the field of flight personnel detection, and in particular relates to a portable rod cell dark adaptation function inspection device and a use method. Background Art

[0002] Dark adaptation is a physiological and psychological phenomenon of human beings. When entering a dark place from a bright place, the eyes cannot see the surrounding objects at first, but gradually they can distinguish objects after adapting to the dark light. That is, the sensitivity of the visual cells to the dark light gradually increases. This adaptation process is dark adaptation. The dark adaptation time is used as the horizontal coordinate, and the logarithm of the illumination intensity is used as the vertical coordinate to obtain a dark adaptation curve. The dark adaptation process is related to the resynthesis of photosensitive pigments in the visual cells. People who are deficient in vitamin A have prolonged dark adaptation and may even suffer from night blindness. Diabetes may also cause abnormal dark adaptation. Pilots with abnormal dark adaptation are more likely to cause accidents. With the development of economy and society, some special industries also have special requirements for the dark adaptation ability of workers.

[0003] Therefore, a tool is needed to quickly test the dark adaptation ability of flight personnel. Summary of the invention

[0004] The purpose of the present invention is to provide a portable rod cell dark adaptation function inspection device and a use method, so as to realize automatic dark adaptation inspection of multiple people at the same time.

[0005] The objective of the present invention is achieved through the following technical means: a portable rod cell dark adaptation function inspection device, comprising an inspection terminal, a relay box and a transponder, wherein the inspection terminal comprises a shade eye mask, a bright field of view and a display chamber, wherein the rear end of the bright field of view is connected to the shade eye mask, and the front end is connected to the display chamber, the front and rear ends of the bright field of view and the shade eye mask are both open, the bright field of view and the shade eye mask are connected, the rear end of the display chamber is open and connected to the bright field of view, and a sight mark module, a brightness switching module and a camera are connected in the display chamber,

[0006] The sight mark module includes a control panel and a display screen connected to the control panel and facing the bright field;

[0007] The brightness switching module includes a mobile module and a dimming film mounting frame, the dimming film mounting frame is connected to the mobile module, and a plurality of dimming films with different light transmittances are arranged on the dimming film mounting frame;

[0008] The camera faces the rear end of the display compartment, and the relay box is electrically connected to the sight mark module, the brightness switching module and the transponder respectively;

[0009] The transponder is provided with a number of buttons corresponding to the images displayed on the display screen.

[0010] The inspection terminal is also connected to a fixed headset.

[0011] The bright field is coated with barium sulfate.

[0012] The inner wall at the rear end of the bright field is connected with a plurality of light source lamps that shine toward the front end.

[0013] The mobile module includes a mobile bracket, a driving motor, a lead screw and a bearing. The mobile bracket is concave-shaped. The driving motor is connected to the outer side of one side wall of the mobile bracket. The other side wall of the mobile bracket is connected to the bearing. The output end of the driving motor is connected to the lead screw, which passes through the side wall of the mobile bracket and is connected to the bearing.

[0014] The dimming film mounting frame includes a fixed block and a dimming film frame. The fixed block is provided with a lead screw hole matching the lead screw, the lead screw passes through the lead screw hole, the fixed block is connected to the dimming film frame, the dimming film frame is divided into several blocks, each block is connected to a dimming film with different transmittance.

[0015] It also includes a terminal storage box, on which a telescopic head support and a telescopic bracket that can be extended upward are arranged, and the terminal storage box is also provided with shockproof cotton.

[0016] The bottom surface of the movable bracket is also connected with a guide rail, and the bottom of the fixed block is also connected with a guide rail groove matching the guide rail, and the fixed block is placed on the guide rail through the guide rail groove.

[0017] A baffle is also connected to the rear of the control panel. The baffle has a hole at a position corresponding to the display screen and is connected to a narrow-band filter. The display screen is located between the control panel and the baffle.

[0018] During the dark test, after the tester wears the inspection terminal, the relay box sends instructions to the display screen of the sight mark module to control the display screen to display patterns. The tester presses the transponder button, and the relay box records the button results.

[0019] When switching the brightness level, the relay box controls the driving motor to rotate, and the lead screw rotates to drive the fixed block to move left and right, so that the first dimming film with different light transmittance can be moved to the back of the display screen;

[0020] During the bright test, the relay box controls the light source to turn on and uses the camera to detect whether the tester has closed their eyes.

[0021] The beneficial effects of the present invention are as follows: by automatically comparing the transponder selection with the pattern displayed on the display screen, the response results of the person being tested are recorded and automatically detected, and multiple devices can be used to perform rapid dark adaptation checks on multiple people at the same time. The brightness of the visual mark can be adjusted during the test through the mobile module, and the closed eye state of the person being tested during the light adaptation process can be monitored through the camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A state diagram for use with a portable device for examining the dark function of visual sensory cells;

[0023] Figure 2 To check the terminal structure diagram;

[0024] Figure 3 It is a schematic diagram of bright field structure;

[0025] Figure 4 It is a schematic diagram of the structure of the sight mark module;

[0026] Figure 5 This is a schematic diagram of the brightness switching module structure;

[0027] Figure 6 This is a schematic diagram of the terminal storage box structure;

[0028] Figure 7 is a schematic diagram of the transponder structure;

[0029] In the figure, 1 is a light shielding eye mask; 2 is a relay box; 3 is a bright field; 4 is a display compartment; 5 is a light source lamp; 6 is a sight mark module; 7 is a brightness switching module; 8 is a camera; 9 is a control board; 10 is a display screen; 11 is a mobile module; 12 is a fixed headband; 13 is a first dimming filter; 14 is a transponder; 15 is a mobile bracket; 16 is a driving motor; 17 is a lead screw; 18 is a bearing; 19 is a fixed block; 20 is a dimming filter rack; 21 is a terminal storage box; 22 is a telescopic head drag; 23 is a telescopic bracket; 24 is a baffle; 25 is a narrow band filter; 26 is a guide rail; 27 is a guide rail groove; 28 is a second dimming filter;

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0031] [Example 1]

[0032] like Figure 1 and Figure 2 As shown, a portable rod cell dark adaptation function inspection device includes an inspection terminal, a relay box 2 and a transponder 14, the inspection terminal includes a shading eye mask 1, a bright field 3 and a display compartment 4, the rear end of the bright field 3 is connected to the shading eye mask 1, and the front end is connected to the display compartment 4, the front and rear ends of the bright field 3 and the shading eye mask 1 are both open, the bright field 3 and the shading eye mask 1 are connected, the rear end of the display compartment 4 is open and connected to the bright field 3, and the display compartment 4 is connected with a sight mark module 6, a brightness switching module 7 and a camera 8,

[0033] The sight mark module 6 includes a control board 9 and a display screen 10 connected to the control board 9 and facing the bright field 3;

[0034] The brightness switching module 7 includes a moving module 11 and a dimming film mounting frame, the dimming film mounting frame is connected to the moving module 11, and a plurality of first dimming films 13 with different light transmittances are arranged on the dimming film mounting frame;

[0035] The camera 8 faces the rear end of the display compartment 4, and the relay box 2 is electrically connected to the visual mark module 6, the brightness switching module 7 and the transponder 14 respectively;

[0036] like Figure 7 As shown, the transponder 14 is provided with a plurality of buttons corresponding to the images displayed on the display screen 10 .

[0037] The relay box 2 is connected to multiple inspection terminals, each of which is also connected to a transponder 14. The relay box has a built-in relay module, a switch and a switching power supply; it is used to connect the video signal and control signal between the computer and the detection terminal, as well as the response signal of the transponder 14, and to supply power to the inspection terminal; 6 inspection terminals can be connected at the same time.

[0038] like Figure 3 As shown, both the front and rear ends of the shading eye mask 1 and the bright field 3 are open. When in use, wear the detection terminal and look from the rear end of the shading eye mask through the bright field 3 to the visual mark module 6 in front.

[0039] The display chamber 4 has only a rear end opening connected to the bright field 3 and a front end closed.

[0040] The display screen 10 is connected to the rear side of the control panel 9 and faces the rear, that is, the direction of the eye shield 1 .

[0041] In the display chamber 4, a mobile module 11 is arranged behind the display screen 10. The dimming film mounting frame on the mobile module 11 is located directly behind the display screen 10. The dimming film on the mobile module 11 just covers the display screen 10. The dimming film mounting frame is driven to move by the mobile module 11, so that the dimming films with different light transmittances are moved to the rear of the display screen 10, thereby realizing the switching of brightness levels.

[0042] Specifically, it includes the adaptation gear (bright adaptation process occlusion), neutral gear (0.64×10 -2 cd / m 2 , that is, the grid here is empty and no light-dimming film is installed), 1% transmittance file (0.64×10 -4 cd / m 2 ).

[0043] The control panel 9 is electrically connected to the relay box 2, and the relay box 2 controls the display screen 10 to display an arrow in a certain direction of up, down, left, or right. The transponder 14 is correspondingly provided with buttons representing up, down, left, or right. Based on whether the displayed direction is consistent with the direction in which the button of the transponder 14 is pressed, it can be known whether the person being tested has been identified correctly.

[0044] Camera 8 uses a Poe camera, facing backward, to detect the eye-closing state of the person being tested during the light adaptation process.

[0045] The shading eye mask uses the HTC Vive CE VR eye replacement eye mask, which has been widely used in the market, is safe and comfortable, and has good shading effect.

[0046] The inspection terminal is also connected to a fixed headband 12. The headband 12 is fixed by setting a plurality of buckles on the light shielding eye mask 1, the bright field 3 or the display chamber 4, and the entire inspection terminal is fixed on the head of the person being tested by the fixed headband 12. The headband is made of elastic bands and Velcro, and the tightness can be adjusted. When used with the inspection terminal, it can be removed for easy use.

[0047] The bright field 3 is coated with barium sulfate.

[0048] The inner wall at the front end of the bright field 3 is connected with a plurality of light source lamps 5 facing the rear end.

[0049] The shell of the bright field 3 is made of polymer material using additive printing technology, and barium sulfate is sprayed inside to improve reflection uniformity. The observation surface is equipped with 4 warm white LED light source lamps 5 as light sources. Specifically, the light source lamps 5 are installed at the four corners of the inner wall on the front side of the bright field 3, facing backward, that is, the direction of the person to be tested.

[0050] like Figure 4 As shown, the control panel 9 controls the pattern display of the display screen 10;

[0051] Bright adaptation lamp, i.e., the light source lamp 5 turns on and off;

[0052] And the moving mechanism moves to switch the brightness.

[0053] like Figure 5 As shown, the mobile module 11 includes a mobile bracket 15, a drive motor 16, a lead screw 17 and a bearing 18. The mobile bracket 15 is concave-shaped, the drive motor 16 is connected to the outer side of one side wall of the mobile bracket 15, and the other side wall of the mobile bracket 15 is connected to the bearing 18. The output end of the drive motor 16 is connected to the lead screw 17, and the lead screw 17 passes through the side wall of the mobile bracket 15 and is connected to the bearing 18;

[0054] The dimming film mounting frame includes a fixed block 19 and a dimming film frame 20. The fixed block 19 is provided with a lead screw hole matching the lead screw 17. The lead screw 17 passes through the lead screw hole. The fixed block 19 is connected to the dimming film frame 20. The dimming film frame 20 is divided into several blocks, each of which is connected to a dimming film with different transmittance.

[0055] The movable bracket 15 is in a concave shape as a whole, and the two ends of the bottom are upwardly protruding side walls.

[0056] The drive motor 16 is connected to the outside of one side wall, with the output end facing the other side wall, and the output end is connected to the lead screw 17. The lead screw 17 passes through the near side wall, and the other end is connected to the bearing 18 of the far side wall. The other end of the lead screw is fixed to the other side wall through the bearing 18 without affecting the rotation of the lead screw 17.

[0057] A lead screw hole is formed on the fixing block 19, and the lead screw 17 passes through the lead screw hole. The lead screw 17 is driven to rotate by the driving motor 16 in forward and reverse directions, so that the fixing block 19 moves left and right.

[0058] In actual use, the dimming film frame 20 can be made into an L-shape, so that the horizontal bottom is connected to the top of the fixed block 19, and the vertical rear end is connected to the first dimming film 13 and protrudes backward. In this way, the sight mark module 6 can be set above the movable bracket 15, and the vertical part protruding backward is behind the sight mark module 6. The two are stacked together, saving space in the display bin 4.

[0059] The dimming film frame 20 is connected to the top of the fixed block 19. The whole is a rectangular frame on a vertical plane, and is divided into three small frames on the left, middle and right by vertical partition columns. Each small frame is connected to a dimming film of different gears. By moving left and right, different dimming films can be moved to the rear of the display screen 10.

[0060] like Figure 6 As shown, it also includes a terminal storage box 21, on which a telescopic head support 22 and a telescopic bracket 23 that can be extended upward are provided, and the terminal storage box 21 is also provided with shockproof cotton.

[0061] The terminal storage box 21 can be placed on the desktop to serve as a test terminal stand, reducing the fatigue of the test personnel during the test; the retractable head 22 and the retractable stand 23 can be adjusted by the knobs on both sides of the box; after the test is completed, the test terminal and the transponder 14 can be stored in the box, which is equipped with EVA shockproof cotton to prevent damage to the equipment during transportation. The retractable stand 23 is used to place the test terminal.

[0062] A guide rail 26 is also connected to the bottom surface of the movable bracket 15 , and a guide rail groove 27 matching the guide rail 26 is also connected to the bottom of the fixed block 19 , and the fixed block 19 is placed on the guide rail 26 through the guide rail groove 27 .

[0063] A guide rail 26 is provided on the bottom surface of the movable bracket 15, and a matching guide rail groove 27 is connected to the bottom of the fixed block 19, so that the fixed block 19 moves along the guide rail 26 when moving left and right, thereby ensuring stability during the movement.

[0064] A baffle 24 is also connected to the rear of the control board 9 . The baffle 24 has a hole at a position corresponding to the display screen 10 and is connected to a narrow-band filter 25 . The display screen 10 is located between the control board 9 and the baffle 24 .

[0065] Behind the control panel 9, that is, in the direction close to the person being tested, a light-proof baffle 24 is provided, with a hole in the middle of the baffle 24 and a narrow-band filter 25 for filtering light of other wavelengths. The hole and the narrow-band filter 25 are located directly behind the display screen 10, and their shapes and sizes match.

[0066] The display screen 10 is located between the control panel 9 and the baffle 24 , and the baffle 24 is connected to the control panel 9 .

[0067] A second dimming film 28 is connected to the opening of the baffle 24. The size and shape of the second dimming film 28 match the display screen 10. The second dimming film 28 is also installed at the opening of the baffle 24 and is located behind the narrow-band filter 25.

[0068] The mobile module 11 is located behind the baffle 24, and the first dimming film 13 on the mobile module 11 is naturally located behind the second dimming film 28.

[0069] The light emitted by the display screen 10 passes through the narrowband filter 25, the second dimming film 28 and the first dimming film 13 on the dimming film holder 20 and is observed by the tester. In actual use, since the dimming film holder 20 may just move to a neutral position, the light only passes through the narrowband filter 25 and the second dimming film 28.

[0070] It also includes an aviation aluminum box filled with molded foam for placing the terminal storage box 21, which is not only convenient for the storage and preservation of the entire inspection equipment, but also convenient for field carrying, thus protecting the entire product.

[0071] During the dark test, after the tester wears the inspection terminal, the relay box 2 sends a command to the display screen 10 of the sight mark module 6 to control the display screen 10 to display a pattern. The tester presses the button of the transponder 14, and the relay box 2 records the button result;

[0072] When switching the brightness level, the relay box 2 controls the driving motor 16 to rotate, and the lead screw 17 rotates to drive the fixing block 19 to move left and right, so that the first dimming film 13 with different light transmittances can be moved to the back of the display screen;

[0073] During the bright test, the relay box 2 controls the light source lamp 5 to turn on, and uses the camera 8 to detect whether the tester closes his eyes.

[0074] When in use, multiple detection terminals are connected to the relay box 2, the relay box 2 controls the display screen 10 to display the pattern, the person being tested wears the detection terminal, presses the button of the transponder 14, the camera 8 monitors the eye closure of the tester during the light adaptation test, and saves the test data in the relay box 2.

[0075] When it is necessary to turn on or off the light source lamp 5 and switch the brightness level, the light source lamp 5 and the driving motor 16 are controlled by the relay box 2 .

Claims

1. A portable device for testing the dark adaptation function of rod photoreceptors, characterized in that: The device comprises an inspection terminal, a relay box (2) and a transponder (14); the inspection terminal comprises a light shielding eye mask (1), a bright field of view (3) and a display chamber (4); the rear end of the bright field of view (3) is connected to the light shielding eye mask (1), and the front end is connected to the display chamber (4); the front and rear ends of the bright field of view (3) and the light shielding eye mask (1) are both open; the bright field of view (3) and the light shielding eye mask (1) are connected; the rear end of the display chamber (4) is open and connected to the bright field of view (3); a sight mark module (6), a brightness switching module (7) and a camera (8) are connected inside the display chamber (4); The sight mark module (6) comprises a control panel (9) and a display screen (10) connected to the control panel (9) and facing the bright field (3); The brightness switching module (7) comprises a mobile module (11) and a dimming film mounting frame, the dimming film mounting frame is connected to the mobile module (11), and a plurality of first dimming films (13) with different light transmittances are arranged on the dimming film mounting frame; The camera (8) faces the rear end of the display compartment (4), and the relay box (2) is electrically connected to the visual mark module (6), the brightness switching module (7) and the transponder (14) respectively; The transponder (14) is provided with a plurality of keys corresponding to the images displayed on the display screen (10).

2. A portable rod cell dark adaptation function testing device according to claim 1, characterized in that: The inspection terminal is also connected to a fixed headset (12).

3. A portable rod cell dark adaptation function testing device according to claim 1, characterized in that: The bright field (3) is coated with barium sulfate.

4. A portable rod cell dark adaptation function testing device according to claim 1, characterized in that: The inner wall at the front end of the bright field (3) is connected to a plurality of light source lamps (5) facing the rear end.

5. The portable rod cell dark adaptation function testing device according to claim 1, characterized in that: The mobile module (11) comprises a mobile bracket (15), a driving motor (16), a lead screw (17) and a bearing (18); the mobile bracket (15) is concave-shaped; the driving motor (16) is connected to the outer side of one side wall of the mobile bracket (15); the other side wall of the mobile bracket (15) is connected to the bearing (18); the output end of the driving motor (16) is connected to the lead screw (17); the lead screw (17) passes through the side wall of the mobile bracket (15) and is connected to the bearing (18); The dimming film mounting frame comprises a fixed block (19) and a dimming film frame (20). The fixed block (19) is provided with a lead screw hole matching with a lead screw (17). The lead screw (17) passes through the lead screw hole. The fixed block (19) is connected to the dimming film frame (20). The dimming film frame (20) is divided into a plurality of blocks, and each block is connected to a dimming film with a different light transmittance.

6. A portable rod cell dark adaptation function testing device according to claim 1, characterized in that: It also comprises a terminal storage box (21), on which a telescopic head support (22) and a telescopic bracket (23) that can be extended upward are arranged, and the terminal storage box (21) is also provided with shockproof cotton.

7. A portable rod cell dark adaptation function testing device according to claim 5, characterized in that: The bottom surface of the movable bracket (15) is also connected to a guide rail (26), and the bottom of the fixed block (19) is also connected to a guide rail groove (27) matching the guide rail (26), and the fixed block (19) is placed on the guide rail (26) through the guide rail groove (27).

8. The portable rod cell dark adaptation function testing device according to claim 1, characterized in that: A baffle (24) is also connected to the rear of the control panel (9), the baffle (24) has a hole at a position corresponding to the display screen (10) and is connected to a narrow-band filter (25), and the display screen (10) is located between the control panel (9) and the baffle (24).

9. A method for using a portable rod cell dark adaptation function testing device, characterized in that: During the dark test, after the tester wears the inspection terminal, a command is sent to the display screen (10) of the sight mark module (6) through the relay box (2), and the display screen (10) is controlled to display a pattern. The tester presses a button on the transponder (14), and the relay box (2) records the button result. When the brightness gear is switched, the relay box (2) controls the driving motor (16) to rotate, and the lead screw (17) rotates to drive the fixed block (19) to move left and right, so that the first dimming film (13) with different light transmittances moves to the rear of the display screen; During the open test, the relay box (2) controls the light source lamp (5) to turn on, and detects the tester's eye closure through the camera (8).

Images