Vision detection method and vision detection device

Abstract

The invention relates to a vision testing method and a vision testing device.The vision testing method comprises the following steps that S1, a plurality of movable sighting marks for testing of a tester are set, a testing scheme is preset, and the testing scheme comprises the number of testing times, the number a1 of the sighting marks used in each time of testing and the single-time using time of the sighting marks; s2, when a tester arrives at the test position, executing the preset test scheme, and obtaining the number a2 of the sighting marks in the use state identified by the tester in each test; according to the vision testing method, the multiple movable sighting marks are arranged, the testing scheme is preset, errors caused by content fixing and memory effects in a traditional vision test are avoided, the randomness and difficulty of the test are increased due to the mobility of the sighting marks, the testing result can more truly reflect the vision level of a testee, and the testing efficiency is improved. Vision testing errors caused by repeated testing content are reduced, and the accuracy of vision testing is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vision detection, and more specifically, to a vision detection method and a vision detection device. Background Art

[0002] With the development of science and technology, mobile phones have become an indispensable smart mobile device in people's lives. Although mobile phones can provide many conveniences for people's lives, they also bring many adverse effects. Among them, eye health problems are the most obvious. For example, using mobile phones in the dark and staying up late to use mobile phones are becoming more and more common, which has also led to a gradual increase in the number of myopic people. Due to the rapid increase in myopia, some myopic people need to undergo multiple vision tests in a short period of time in order to quickly understand the changes in visual function.

[0003] At present, vision measurement usually adopts a static method to test vision, such as a traditional eye chart. The tester is required to look at the test chart statically and evaluate his vision level by identifying the symbol or letter "E" on the chart. Patent application number CN03252948 discloses a self-testing vision test device, which uses optical principles to scale the eye chart, greatly reducing the distance required for vision testing. The tester can change the eye chart dial for testing by shaking the hand wheel. However, the eye chart dial in the device and the traditional eye chart for testing have the problem of fixed content, and it is easy to produce memory after multiple tests, resulting in large errors in subsequent tests.

[0004] In view of this, it is indeed necessary to provide a technical solution to the above problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a vision detection method and a vision detection device in view of the above-mentioned defects of the prior art.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A method for visual acuity detection, comprising the following steps:

[0008] S1. Set a plurality of movable sight marks for the tester to detect, and preset a test plan, the test plan including the number of tests, the number of sight marks used in each test a1, and the single use time of the sight marks;

[0009] S2, when the tester arrives at the test location, the preset test plan is executed to obtain the number a2 of visual marks in use identified by the tester in each test;

[0010] S3, compare the value of a2 with the value of a1. When a2 is equal to a1, the test is considered successful, and the distance between the tester and the sight mark is obtained and recorded; when a2 is not equal to a1, the test is considered failed;

[0011] S4. After the test is finally determined to be failed in step S3, the distance between the tester and the sight mark is shortened by Ncm, and the test is repeated back to the node of step S2 until the test is determined to be successful.

[0012] As an improvement of the vision testing method, in step S2 and in step S3, when it is determined that the test has failed, the test plan is executed again, and in each test, the sight mark in use is controlled to move synchronously, entering the sight mark swing test, and continuing to obtain the a2 value and comparing it with a1 to determine whether the test is successful.

[0013] As an improvement of the vision testing method, in step S1, the testing scheme further includes an amplitude value of the synchronous movement of the sight mark to control the movement amplitude of the sight mark during the swing test.

[0014] A vision detection device adopts the above-mentioned vision testing method, the vision detection device includes a device body, a rotating component that can drive the device body to reciprocate and rotate and swing, and a plurality of test rods arranged on the device body, the test rods are movable sight marks, and the device body is provided with an adjustment component that cooperates with the test rods, and the adjustment component can drive the test rods to move and retract into the device body, and extend out from the device body to be in use.

[0015] As an improvement of the vision detection device, the device body has a plurality of slide grooves for installing the test rod, and the plurality of slide grooves are distributed at intervals along the edge of the device body.

[0016] As an improvement of the vision detection device, the adjustment component includes a magnet, a power supply module, and a first electromagnet and a second electromagnet respectively installed on the bottom and the slot of the slide groove; the magnet is arranged at the inner end of the test rod, and the magnet cooperates with the first electromagnet and the second electromagnet.

[0017] As an improvement of the vision detection device, it also includes a sensor, which is arranged on the device body, and the sensor is used to sense and obtain the distance between the device body and the tester.

[0018] As an improvement of the vision detection device, the device body also includes a control main board electrically connected to the rotating component and the adjusting component.

[0019] As an improvement of the vision detection device, the rotating assembly includes a mounting seat, a gear mounted on the mounting seat and a driver. The device body is rotatably connected to the mounting seat and is provided with arc-shaped teeth that mesh with the gear. The driver can drive the gear to rotate reciprocatingly to drive the device body to swing reciprocatingly.

[0020] As an improvement of the vision detection device, it also includes a linear moving component, the output end of which is connected to the rotating component to drive the device body to move linearly to adjust the distance between the device and the tester.

[0021] As an improvement of the vision detection device, the linear moving component includes a bracket and a guide rod, a screw rod, and a drive motor arranged on the bracket. The guide rod is arranged parallel to the screw rod and is slidingly connected to the rotating component. The screw rod is threadedly connected to the rotating component. The drive motor can drive the screw rod to rotate to control the movement of the device body.

[0022] The beneficial effects of the present invention are as follows: the vision test method sets a plurality of movable sight marks and presets a test scheme. Through the preset test scheme, including the number of tests, the number of sight marks and the single use time, the method can be personalized according to the needs and vision conditions of different testers, thereby improving the pertinence and effectiveness of the test. The tester's vision level can be accurately assessed in a relatively short time, reducing the fatigue and discomfort caused by repeated tests and long-term static gaze; and avoiding the errors caused by content fixation and memory effect in traditional vision tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0024] Figure 1 is a flow chart of the vision testing method;

[0025] Figure 2 It is one of the structural schematic diagrams of the vision detection device;

[0026] Figure 3 is a cross-sectional view of a portion of the structure of the vision detection device;

[0027] Figure 4 is a side view of the vision detection device;

[0028] Figure 5 This is the second structural schematic diagram of the vision detection device;

[0029] Figure 6 It is a structural schematic diagram of the test rod of the vision detection device.

[0030] In the figure: 1. device body; 11. slide slot; 2. test rod; 3. rotating assembly; 31. mounting base; 32. gear; 33. arc teeth; 34. driver; 4. adjustment assembly; 41. magnet; 42. power module; 43. first electromagnet; 44. second electromagnet; 5. sensor; 61. bracket; 62. guide rod; 63. screw rod; 64. drive motor. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0032] like Figure 1 As shown, a vision detection method, the steps are as follows:

[0033] S1. Set a plurality of movable sight marks for the tester to detect, and preset a test plan, the test plan including the number of tests, the number of sight marks used in each test a1, and the single use time of the sight marks;

[0034] S2, when the tester arrives at the test location, the preset test plan is executed to obtain the number a2 of visual marks in use identified by the tester in each test;

[0035] S3, compare the value of a2 with the value of a1. When a2 is equal to a1, the test is considered successful, and the distance between the tester and the sight mark is obtained and recorded; when a2 is not equal to a1, the test is considered failed;

[0036] S4. After the test is finally determined to have failed in step S3, the distance between the tester and the sight mark is shortened by Ncm, and the process is then traced back to the node of step S2 and the test is repeated until the test is determined to have succeeded.

[0037] According to the number of movable sight marks set, the corresponding test scheme is preset, and the a1 value in the test scheme shall not be higher than the number of movable sight marks set. When the tester moves to the test position, the test scheme is executed, and the a2 value obtained in each test in the test scheme is compared with the corresponding a1 value set. If the a2 value obtained in any test is equal to the a1 value, the test is judged to be successful; if the a2 value obtained in the test is not equal to the a1 value, the test is judged to be failed, which means that the distance between the sight mark and the tester is too large, resulting in the sight mark in the eyes of the tester. The image is too small or blurred, making it difficult for the tester to accurately identify the number of sight marks, and the test is judged to be failed. Therefore, after shortening the distance between the tester and the sight mark by Ncm, go back to the step S2 node and retest until the test is judged to be successful.

[0038] This vision test method sets multiple movable sight marks and presets the test plan. Through the preset test plan, including the number of tests, the number of sight marks and the single use time, the method can be personalized according to the needs and vision conditions of different testers, thereby improving the pertinence and effectiveness of the test. The tester's vision level can be accurately assessed in a relatively short time, reducing the fatigue and discomfort caused by repeated tests and long-term static gaze. It avoids the errors caused by content fixation and memory effect in traditional vision tests.

[0039] In addition, by regularly using this method for vision testing, it can help the tester understand his or her vision condition in a timely manner, so that he or she can take corresponding protective measures, such as adjusting eye habits, conducting vision training, etc., which helps prevent and slow down vision loss.

[0040] In a further embodiment, in step S3, when it is determined that the test has failed, the test plan is executed again, and in each test, the sight mark in use is controlled to move synchronously, entering the sight mark swing test, and continuing to obtain the a2 value and comparing it with a1 to determine whether the test is successful.

[0041] The mobility of the sight mark increases the randomness and difficulty of the test, making the test results more realistically reflect the tester's vision level. When the tester makes an identification error, the test method of synchronous movement of the sight mark is introduced, which not only increases the diversity of the test, but also helps to dynamically evaluate the tester's vision, especially the ability to process dynamic visual information.

[0042] In a further embodiment, as in step S3, after the test is determined to be successful, in order to further improve the accuracy of the test, the distance between the tester and the sight mark is extended by Ncm, and then the test is traced back to the step S2 node, and the test is repeated until the test is determined to be failed, and the data of the tester when the test is finally determined to be successful is used as the test result. And the test scheme with the most tests a2=a1, in which the distance between the tester and the sight mark is the tester's optimal visual distance. In this way, the visual limit value of the tester and the tester's optimal visual distance are obtained, and the accuracy and comprehensiveness of the test results are improved.

[0043] Furthermore, in step S3, if the tester identifies the correct number of sight marks used in one test, the test is considered successful and the distance between the tester and the sight mark is recorded.

[0044] Specifically, when N>0, the tester can correctly identify the number of sight marks, indicating that his vision level is in line with expectations under the current test conditions. The recorded spacing data can be used as an important basis for evaluating the tester's vision. The spacing between the sight marks and the tester can also be increased as needed to obtain more accurate test data and detect the tester's vision limit. The recorded spacing data can be used as a benchmark for subsequent vision monitoring, which helps to detect vision changes in a timely manner and take corresponding measures. Once the tester successfully identifies the number of sight marks used, the current test can be ended immediately without the need for additional testing or adjustments, thereby improving the efficiency of the test.

[0045] Furthermore, if the test subject identifies correctly in one test but incorrectly in the other tests, this data can provide a basis for subsequent adjustments to the personalized test plan to better suit the test subject's vision condition and needs.

[0046] Furthermore, in step S1, the test scheme also includes an amplitude value of synchronous movement of the sight mark to control the movement amplitude of the sight mark during the swing test. By setting the amplitude value of synchronous movement of the sight mark, it can be ensured that the movement range and speed of the sight mark remain consistent during each swing test, thereby standardizing the test conditions and improving the accuracy and comparability of the test results. By adjusting the amplitude value of the movement of the sight mark, the difficulty of the test can be adjusted individually according to the tester's vision and test requirements. For testers with better vision, the movement amplitude can be increased to increase the challenge of the test; for testers with poorer vision, the movement amplitude can be reduced to reduce the difficulty of the test.

[0047] The setting of synchronous movement of sight marks may make some vision problems that are difficult to detect in static tests appear in dynamic tests, thereby improving the sensitivity and specificity of the test. It is helpful to detect vision problems in a timely manner and take appropriate intervention measures.

[0048] In a further embodiment, the a2 value may be obtained by voice recognition. After a single test is completed, the tester outputs the number of visual marks in use through voice, and the a2 value is obtained after receiving and recognizing the voice.

[0049] The method of voice recognition is to set up a voice recognition module, which includes at least a microphone and a voice recognition chip. The microphone is used to collect the tester's voice commands and can convert the tester's voice signal into an electrical signal for subsequent processing. The voice recognition chip is responsible for processing and recognizing the collected voice signal. The voice recognition chip analyzes the voice signal through a built-in algorithm to obtain the a2 value and output it externally.

[0050] In some other embodiments, the a2 value may be obtained by data input. After a single test is completed, the tester manually inputs the number of visual marks identified as being in use to obtain the a2 value.

[0051] The data input method is specifically to set a data input module including an input keyboard, and manually control the keyboard to input the number a2 of visual marks in use identified by the tester, so as to obtain the a2 value and output it externally.

[0052] It should be noted that the vision recognition method also uses a data storage module and a data processing module. The data storage module is used to receive the acquired a2 value and send it to the data processing module, and store the recorded distance value between the tester and the sight mark; the data processing module is used to receive the a2 value sent by the data storage module, and compare it with the preset a1 value, and determine whether the test is successful to complete the data processing. The values ​​of the test plan can be preset by the data processing module, including but not limited to the number of tests, the number of sight marks a1 used in each test, the single use time of the sight mark, the amplitude value of the synchronous movement of the sight mark, and the value of N.

[0053] The data storage module may include a storage hard disk and a storage controller. The storage hard disk is a solid state drive (SSD) or a hard disk drive (HDD). In the data storage module, an appropriate number and specification of SSDs or HDDs may be selected according to demand to form a storage array, such as a RAID array, to improve data reliability and read and write performance. The storage controller is responsible for managing the read and write operations of the SSD or HDD to ensure that data can be stored efficiently and accurately on the storage medium.

[0054] The data processing module is a processor (CPU) or a digital signal processor (DSP), which is responsible for executing complex computing tasks and data processing algorithms, and is used to process various information in the test plan and compare and analyze the information, and draw conclusions according to the preset algorithm.

[0055] In some other embodiments, the movable sight mark can be a plurality of marks on the display, and when the marks are controlled to emit light, they are in use; when the sight mark is swung for testing, the marks emitting light are controlled to move back and forth to form a swung state, so that the tester can perform the swung test.

[0056] The present invention is further described below through specific implementation modes:

[0057] Example 1

[0058] Test method: Preset the test plan, and the single use time of each sight mark is 10 seconds. At the beginning of the test, the initial distance between the tester A and the sight mark is set to 100cm. Obtain the a2 value in each test; compare the a2 value with the a1 value. When a2 is equal to a1, the test is considered successful, and the distance between the tester and the sight mark is obtained and recorded; when a2 is not equal to a1, the test is considered failed.

[0059] This test plan is used to test testers A, B, C, and D. The test results are shown in the following table:

[0060] Table 1 is one of the vision test data tables of testers A, B, C, and D.

[0061]

[0062] In this embodiment, five movable sight marks are set by a preset test scheme, and vision tests are performed on testers A, B, C, and D. In the test scheme, each sight mark is used for 10 seconds at a time, and the tester's vision level is determined based on his or her response.

[0063] Tester A successfully identified all the visual signs presented in the three tests, indicating that tester A had good vision at the current test distance and was able to accurately identify the visual signs. The test successfully recorded the distance between the tester and the visual signs, 100 cm, and the number of correct identifications, 3 times. This distance can be used as a reference for evaluating his vision level.

[0064] Test subject B successfully identified all the visual signs in the first two tests, but failed to accurately identify all the visual signs in the third test; despite this, since the first two tests were successfully identified, the test was also determined to be successful, and the interval of 100 cm and the number of correctly identified tests, 2, were recorded; it can be considered that test subject B has good visual recognition ability in most cases.

[0065] Tester C only successfully identified all visual marks in the first test. According to the determination method of a2=a1, tester C is still determined to have succeeded in the test and the distance of 100 cm and the number of correctly identified tests are recorded as 1; and this reflects that this is the maximum visual distance of tester C.

[0066] Tester D failed to accurately identify all sight marks in three tests, indicating that the visual acuity of tester D at the current test distance was not enough to clearly identify all sight marks; the test was considered a failure; the distance was recorded as 100 cm and the number of correctly identified tests was 0. At the same time, according to the test plan, a reminder can be given to shorten the distance between the tester and the sight mark, and retest.

[0067] Example 2

[0068] Test method: Preset the test plan, and the single use time of each sight mark is 10 seconds. At the beginning of the test, the initial distance between tester A and the sight mark is set to 100cm. Obtain the a2 value in each test; compare the a2 value with the a1 value. When a2 is equal to a1, the test is considered successful, and the distance between the tester and the sight mark is obtained and recorded; when a2 is not equal to a1, the test is considered to have failed; if the test is finally determined to have failed, shorten the distance between the tester and the sight mark by Ncm, N = 10cm; go back to step S2 node and retest until the test is determined to have succeeded.

[0069] This test plan is used to test testers A, B, C, and D. The test results are shown in the following table:

[0070] Table 2 is the second table of vision test data of testers A, B, C, and D

[0071]

[0072] In this embodiment, the vision detection method is further optimized. Not only is the test scheme preset, including the single use time of each sight mark is 10 seconds, but also when the tester fails to accurately identify all sight marks, the distance between the tester and the sight mark is shortened to retest until the test is successful. In this way, a more detailed vision assessment is performed on testers A, B, C, and D.

[0073] In all three tests, test subject A successfully identified all the visual signs presented even at the initial distance, and the test was considered successful. The distance of 100 cm and the number of correctly identified tests were recorded as 3 times, indicating that test subject A's vision was in good condition at this viewing distance and there was no need to adjust the test distance.

[0074] Tester B successfully identified all visual signs in the first two tests, but failed to identify them completely accurately in the third test; the test was judged to be successful, and the spacing of 100 cm and the number of tests correctly identified 2 times were recorded.

[0075] Tester C only successfully identified all visual marks in the first test among the three tests. According to the determination method of a2=a1, tester C is still determined to have succeeded in the test and the distance of 100 cm and the number of correctly identified tests, 1, are recorded; and this reflects that this is the maximum visual distance of tester C.

[0076] Tester D failed to successfully identify all sight marks in three tests at the initial distance, but after shortening the distance to 90cm and retesting, tester D successfully identified all sight marks in use in three tests, and recorded the distance of 90cm and the number of tests correctly identified 3 times. This verified the visual acuity level of tester D and provided key data for his visual acuity assessment; it also showed that tester A's visual acuity was in good condition at this viewing distance, and there was no need to adjust the test distance.

[0077] Example 3

[0078] Test method: Preset the test plan, and the single use time of each sight mark is 10 seconds. At the beginning of the test, the initial distance between the tester A and the sight mark is set to 110cm. Get the a2 value in each test; compare the a2 value with the a1 value. When a2 and a1 are equal, the test is considered successful, and the distance between the tester and the sight mark is obtained and recorded; when a2 and a1 are not equal, the test is considered to have failed, and then the test is repeated, and the sight mark swing test is entered; the a2 value in the sight mark swing test is obtained and compared with the a1 value again; if the test is still judged to have failed, the distance between the tester and the sight mark is shortened by Ncm, N=10cm; go back to the step S2 node and retest until the test is determined to be successful.

[0079] This test plan is used to test testers A, B, C, and D. The test results are shown in the following table:

[0080] Table 3 is the third table of vision test data of testers A, B, C, and D

[0081]

[0082]

[0083] In this embodiment, the vision detection method is further optimized, and a sight mark swing test is introduced. When the test subject fails to accurately identify all sight marks, the test is re-evaluated by shortening the spacing and performing a sight mark swing test until the test is successful. In this way, the vision of test subjects A, B, C, and D is tested and evaluated.

[0084] In all three tests, test subject A successfully identified all the visual signs presented even at the initial distance, and the test was considered successful. The distance of 110 cm and the number of correctly identified tests were recorded as 3 times, indicating that test subject A's vision was in good condition at this viewing distance and there was no need to adjust the test distance.

[0085] Test subject B was unable to completely and accurately identify the sight marks in the static test at a spacing of 110 cm. However, after entering the sight mark swing test, he successfully identified all the sight marks in the first two tests. The test was judged to be successful, and the spacing of 110 cm and the number of correct identification tests were recorded twice.

[0086] Tester C failed in three static tests at a distance of 110 cm and entered the visual mark swing test, but failed in all three tests. By shortening the distance to 100 cm and re-executing the test plan, only the first test of the three static tests at a distance of 110 cm successfully recognized all the visual marks. According to the determination method of a2=a1, tester C was still determined to have succeeded in the test and the distance of 100 cm and the number of correctly identified tests were recorded as 1; this reflects that this is the maximum visual distance of tester C.

[0087] When the distance was 110 cm, tester D failed in both the static test and the sight mark swing test. After shortening the distance to 100 cm, he failed to identify the sight marks correctly in the three static tests. However, in the sight mark swing test, he accurately identified the number of sight marks in use in the first two tests. The test was judged to be successful, and the distance of 100 cm and the number of correct identification tests were recorded as 2.

[0088] After testing Examples 1-3, it is concluded that this vision detection method significantly improves the accuracy and reliability of the test by presetting the test scheme, introducing movable sight marks and a dynamic spacing adjustment mechanism. Compared with traditional static vision tests, this method can more truly reflect the tester's vision level and reduce errors caused by content fixation and memory effects. The test scheme supports personalized adjustments based on the needs and vision conditions of different testers, including the number of tests, the number of sight marks, the single use time, and the spacing, etc., which improves the pertinence and effectiveness of the test. The sight mark swing test link introduced in Example 3 makes the test not only limited to static vision assessment, but also covers dynamic vision assessment, and more comprehensively understands the visual ability of the tester. The test can not only accurately obtain the tester's vision level, but also record the optimal spacing and vision limit between the tester and the sight mark, providing comprehensive data support for subsequent vision monitoring and health care.

[0089] In another embodiment, if Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the present application provides a vision detection device, which adopts the above-mentioned vision testing method, including a device body 1, a rotating component 3 that can drive the device body 1 to rotate and swing back and forth, and 5 test rods 2 arranged on the device body 1. The test rods 2 serve as movable sight marks. The device body 1 is provided with an adjusting component 4 that cooperates with the test rods 2. The adjusting component 4 can drive the test rods 2 to move and retract into the device body 1, as well as extend outward from the device body 1 to be in use.

[0090] Specifically, five test rods 2 are located at the upper part of the device body 1, and all serve as movable sight marks. The rotating component 3 is connected and matched with the lower part of the device body 1, and the five test rods 2 and the device body 1 form a palm shape. The test rods 2 extend and retract to simulate the expansion and contraction of the fingers of the palm. The test rods 2 are in the use state after being extended. When it is necessary to use this device to test the eyesight of the tester, the device can be moved to a preset distance from the tester first, and then driven by the adjustment component 4 to make some or all of the test rods 2 extend to the use state, thereby simulating the fingers in the expanded state, and the tester observes and identifies the number of test rods 2 in the use state; if the identification is correct, the distance between the tester and the device body 1 at this time is recorded; if the identification is wrong, the rotating component 3 is started according to the demand to drive the device body 1 to swing back and forth, thereby driving the test rods 2 in the use state to swing synchronously, so as to simulate the swinging action of the fingers after expansion, and the tester identifies the number of test rods 2 that swing synchronously, so as to perform the sight mark swing test; to achieve the purpose of detecting the strength of their eyesight.

[0091] This detection device can flexibly adjust the amount of extension of the test rod 2 and the swing of the device body 1 according to the test requirements, provide a personalized testing experience, and conduct vision tests on the tester by simulating the dynamic changes of fingers. It also reduces the repeatability of vision test content for the same tester and improves the accuracy of vision testing. In addition, during the test, there is no need to use one's own palm for testing, which reduces labor costs and improves test efficiency. It also increases the fun and interactivity of the test process, which helps to improve the tester's participation and enthusiasm.

[0092] Specifically, the speech recognition module, the data input module, the data storage module and the data processing module are all arranged in the device body 1. In other implementations, the speech recognition module, the data input module, the data storage module and the data processing module can also be connected to the device body 1 in an external manner.

[0093] In other embodiments, the structure of the adjustment component further includes a spring, a locking mechanism, and a trigger mechanism. The spring is installed inside the test rod 2, and the test rod 2 is locked in the device body 1 through the locking mechanism. When the test rod 2 needs to be extended, the trigger mechanism releases the locking mechanism, and the elastic force of the spring causes the test rod 2 to automatically extend. When retracting, the test rod 2 is pushed back and re-locked by an external force (such as manual or motor drive).

[0094] In other embodiments, the structure of the adjustment component also includes a reduction motor, a connecting rod mechanism, and a guide rail. The reduction motor drives the connecting rod mechanism to move. The connecting rod mechanism is connected to the test rod 2. Through the set connecting rod transmission path, the test rod 2 can be extended or retracted. This structure can control the movement range of the test rod 2 by adjusting the length and angle of the connecting rod.

[0095] In other embodiments, the number of the test sticks 2 can be set to 2, 3, 4, 6, 7 or 8 as required.

[0096] Furthermore, the device body 1 has five slide grooves 11 for installing the test rod 2, and the five slide grooves 11 are distributed at intervals along the edge of the device body 1. Specifically, the five slide grooves 11 are distributed evenly or at specific intervals along the edge of the device body 1, so that the test rod 2 can move along the track of the slide grooves 11, and the stability and accuracy of the test rod 2 during the movement are ensured.

[0097] In some embodiments of the present application, the adjustment component 4 includes a magnet 41, a power module 42, and a first electromagnet 43 and a second electromagnet 44 respectively installed at the bottom and the slot of the slide slot 11. The magnet 41 is arranged at the inner end of the test rod 2, and the magnet 41 cooperates with the first electromagnet 43 and the second electromagnet 44.

[0098] Specifically, the bottom and the slot mouth of the slide slot 11 are respectively provided with a first electromagnet 43 and a second electromagnet 44 with opposite magnetic forces. A magnet 41 is provided at the inner end of each test rod 2. The magnet 41 is located between the first electromagnet 43 and the second electromagnet 44. The power supply module 42 provides electrical energy to the first electromagnet 43 and the second electromagnet 44 to generate a magnetic field, and the power on and off of the first electromagnet 43 and the second electromagnet 44 and the magnetic force direction can be adjusted.

[0099] When it is necessary to extend the preset corresponding number of test rods 2, the power module 42 energizes the first electromagnet 43 and the second electromagnet 44 in the corresponding chute 11. At this time, the magnetism of the first electromagnet 43 is the same as that of the magnet 41, and the magnetism of the second electromagnet 44 is opposite to that of the magnet 41. Due to the magnetic principle that like repels like and opposites attract, the first electromagnet 43 and the second electromagnet 44 drive the magnet 41 to move toward the slot of the chute 11 through magnetic force until the second electromagnet 44 and the magnet 41 are attracted, so that the test rod 2 extends outward and is in an unfolded state for observation and detection by the tester. However, when it is necessary to retract the preset number of test rods 2, the power module 42 adjusts the magnetism of the first electromagnet 43 to be opposite to that of the magnet 41, and adjusts the magnetism of the second electromagnet 44 to be the same as that of the magnet, and pushes the magnet 41 to move toward the bottom of the chute 11, so that the test rod 2 retracts into the chute 11 and is in a contracted state. The power module 42 can adjust the power on and off of the first electromagnet 43 and the second electromagnet 44 and the direction of the magnetic force, so as to achieve precise control of the extension and retraction of the test rod 2.

[0100] In addition, by setting a corresponding number of first electromagnets 43 and second electromagnets 44 to cooperate with the magnet 41 of the test rod 2, the purpose of extending and retracting the test rod 2 can be achieved, thereby reducing production costs, simplifying the structure, and not requiring the use of too many driving elements (such as motors, cylinders, electric push rods, etc.). At the same time, it also reduces the weight of the device body 1 and reduces the operating load of the rotating component 3.

[0101] In some embodiments of the present application, a sensor 5 is further included, which is arranged on the device body 1, and the sensor 5 is used to sense and obtain the distance between the device body 1 and the tester. The sensor 5 can continuously monitor the distance between the device body 1 and the tester. The sensor 5 is an infrared sensor 5. The measured distance information is converted into an electrical signal or other easily processable signal form, and transmitted to the control main board for viewing by the staff, and the staff can adjust the position of the device according to the detected distance.

[0102] The sensor 5 enables the device to sense the position change of the tester, and adjust the state of the test stick 2 or issue a prompt accordingly, thereby realizing intelligent interaction with the tester.

[0103] In other embodiments, the sensing method of the sensor 5 can be set to infrared sensing method, ultrasonic sensing method, laser ranging sensing method, etc. according to needs).

[0104] In some embodiments of the present application, the device body 1 also includes a control mainboard electrically connected to the rotating component 3 and the adjusting component 4. The control mainboard receives the user's operating instructions, and accurately controls the operation of the rotating component 3 and the adjusting component 4 through circuit connection, so as to achieve efficient data transmission and control signal transmission. When the user needs the device to swing, the number of test rods 2 extended once and multiple times can be preset by controlling the mainboard, and it can be determined whether to swing, so as to form a detection plan and archive it in the control mainboard. The control mainboard sends instructions to the rotating component 3 and the power module 42 according to the corresponding detection plan. After the power module 42 receives the instruction signal, it uses magnetic force to drive the corresponding test rod 2 to extend and retract. After the rotating component 3 receives the instruction signal, it drives the device body 1 to swing back and forth at the corresponding time point. The centralized control of the control mainboard improves the degree of automation of the device and reduces manual intervention.

[0105] In some embodiments of the present application, the control mainboard includes a data storage module. By adding the data storage module to the control mainboard, the test data and test results of the tester are recorded to facilitate subsequent analysis and comparison.

[0106] In some embodiments of the present application, the rotating component 3 includes a mounting base 31, a gear 32 mounted on the mounting base 31 and a driver 34. The device body 1 is rotatably connected to the mounting base 31 and is provided with arc-shaped teeth 33 that mesh with the gear 32. The driver 34 can drive the gear 32 to rotate reciprocatingly to drive the device body 1 to swing reciprocatingly.

[0107] Specifically, the driver 34 is a motor. After the driver 34 is started, power is generated and transmitted to the gear 32, driving the gear 32 to rotate; the gear 32 is meshed with the arc-shaped teeth 33 on the device body 1, thereby converting the rotational motion of the gear 32 into the swing of the device body 1. Therefore, the detection device controls the driver 34, and the gear 32 reciprocates (forward and reverse), thereby enabling the device body 1 to achieve reciprocating swinging motion. The dynamic test method can more comprehensively evaluate the tester's vision, including the visual response ability to different moving directions and speed changes. By adjusting the parameters of the driver 34, such as the rotation speed and rotation direction, the swing speed and frequency of the device body 1 can be easily controlled to meet different test requirements.

[0108] It should be noted that the arc-shaped teeth 33 are formed by a plurality of teeth arranged at intervals along the lower edge of the device body 1 .

[0109] In some embodiments of the present application, Figure 5 As shown, it also includes a linear moving component, the output end of which is connected to the rotating component 3, and is used to drive the device body 1 to move linearly to adjust the distance between the device and the tester.

[0110] In some embodiments of the present application, the linear moving component includes a bracket 61 and a guide rod 62, a screw rod 63, and a drive motor 64 arranged on the bracket 61. The guide rod 62 and the screw rod 63 are arranged in parallel and are slidingly connected to the rotating component 3. The screw rod 63 is threadedly connected to the rotating component 3. The drive motor 64 can drive the screw rod 63 to rotate to control the movement of the device body 1.

[0111] Specifically, the screw rod 63 is threadedly connected to the mounting base 31. When the distance between the test rod 2 and the tester needs to be adjusted, the drive motor 64 can be started to drive the screw rod 63 to rotate. Since the screw rod 63 and the rotating component 3 are threadedly connected, the rotational movement of the screw rod 63 will be converted into a linear movement of the rotating component 3, thereby driving the device body 1 to move. The guide rod 62 guides the rotating component 3 to ensure the stability and accuracy of the moving process.

[0112] The setting of the linear moving component can accurately adjust the distance between the device and the tester as needed, ensuring that the test is performed at an optimal distance, thereby improving the accuracy and comfort of the vision test.

[0113] In other embodiments, the structure of the linear motion component can also be set as a cylinder drive structure, a hydraulic cylinder drive structure, a linear motor structure or a chain / belt drive structure to drive the device body 1 to move linearly to adjust the distance between the device and the tester.

[0114] In some embodiments of the present application, both the mounting base 31 and the linear moving assembly are provided with a level. The two levels are used to monitor the horizontality of the device body 1 in the vertical and longitudinal directions to maintain the stability of the device body 1 during operation and ensure a good test effect. This is to solve the problem that during manual testing, the human hand will be tired due to long-term swinging, resulting in the palm being tilted when shaking.

[0115] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A method for visual acuity detection, characterized in that: Here are the steps: S1. Set a plurality of movable sight marks for the tester to detect, and preset a test plan, the test plan including the number of tests, the number of sight marks used in each test a1, and the single use time of the sight marks; S2, when the tester arrives at the test location, the preset test plan is executed to obtain the number a2 of visual marks in use identified by the tester in each test; S3, compare the value of a2 with the value of a1. When a2 is equal to a1, the test is considered successful, and the distance between the tester and the sight mark is obtained and recorded; when a2 is not equal to a1, the test is considered failed; S4. After the test is finally determined to have failed in step S3, the distance between the tester and the sight mark is shortened by Ncm, and the process is then traced back to the node of step S2 and the test is repeated until the test is determined to have succeeded.

2. The vision testing method according to claim 1, characterized in that: In step S2 and step S3, when it is determined that the test fails, the test plan is executed again, and in each test, the sight mark in use is controlled to move synchronously, entering the sight mark swing test, and continuing to obtain the a2 value and compare it with a1 to determine whether the test is successful.

3. The vision testing method according to claim 2, characterized in that: In the step S1, the test scheme also includes an amplitude value of the synchronous movement of the sight mark to control the movement amplitude of the sight mark during the swing test.

4. A vision detection device, characterized in that: The vision testing method according to any one of claims 1 to 3 is adopted, wherein the vision detection device includes a device body, a rotating component capable of driving the device body to rotate and swing back and forth, and a plurality of test rods arranged on the device body, wherein the test rods are movable sight marks, and an adjustment component cooperating with the test rods is arranged on the device body, wherein the adjustment component can drive the test rods to move and retract into the device body, as well as extend outward from the device body to be in use.

5. The vision detection device according to claim 4, characterized in that: The device body has a plurality of slide grooves for installing the test rods, and the plurality of slide grooves are distributed at intervals along the edge of the device body.

6. The vision detection device according to claim 5, characterized in that: The adjustment component includes a magnet, a power module, and a first electromagnet and a second electromagnet respectively installed at the bottom and the slot of the slide slot. The magnet is arranged at the inner end of the test rod, and the magnet cooperates with the first electromagnet and the second electromagnet.

7. The vision detection device according to claim 6, characterized in that: It also includes a sensor, which is arranged on the device body, and is used to sense and obtain the distance between the device body and the tester.

8. The vision detection device according to any one of claims 4 to 7, characterized in that: The device body also includes a control mainboard electrically connected to the rotating component and the adjusting component.

9. The vision detection device according to claim 8, characterized in that: The rotating assembly includes a mounting seat, a gear mounted on the mounting seat and a driver. The device body is rotatably connected to the mounting seat and is provided with arc-shaped teeth meshing with the gear. The driver can drive the gear to rotate reciprocatingly to drive the device body to swing reciprocatingly.

10. The vision detection device according to claim 9, characterized in that: It also includes a linear motion component for adjusting the distance between the device body and the tester, the linear motion component includes a bracket and a guide rod, a screw rod, and a drive motor arranged on the bracket, the guide rod is arranged parallel to the screw rod and is slidingly connected to the rotating component, the screw rod is threadedly connected to the rotating component, and the drive motor can drive the screw rod to rotate to control the movement of the device body.

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