Eye protection device and method of controlling the same

Abstract

Provided are an eye protection device and a control method thereof. The eye protection device comprises a main control circuit module and an acquisition circuit module. The main control circuit module comprises a microprocessor. The acquisition circuit module comprises a plurality of light intensity acquisition units. Each light intensity acquisition unit comprises a first type light intensity sensor and a polarizer. The polarizer is arranged on the light entrance side of the first type light intensity sensor. The microprocessor comprises a judgment and output unit. The judgment and output unit is configured to judge whether incident light is polarized light according to a plurality of light intensity values obtained by the plurality of first type light intensity sensors, and further judge the type of a read object. The microprocessor is configured to output an eye protection prompt information according to the type of the read object. According to the present disclosure, the first type light intensity sensor with the polarizer is arranged, so that polarized light and natural light can be distinguished, and it can be judged whether the read object is a paper read object, so that the user can obtain the prompt information that is beneficial to vision protection.

Description

TECHNICAL FIELD

[0001] At least one embodiment of the present disclosure relates to an eye protection device and a control method thereof. BACKGROUND

[0002] In recent years, with the rapid development of science and technology information, various electronic products have emerged. In order to better protect vision, some eye protection devices have functions of measuring the distance between the human eye and the reading object, monitoring the eye use time and the eye use posture, etc., and the user can adjust according to the corresponding prompt information. SUMMARY

[0003] At least one embodiment of the present disclosure provides an eye protection device and a control method thereof.

[0004] At least one embodiment of the present disclosure provides an eye protection device, which comprises a main control circuit module and an acquisition circuit module, the main control circuit module comprises a microprocessor; the acquisition circuit module comprises a plurality of light intensity acquisition units, wherein the light intensity acquisition unit comprises a first type light intensity sensor and a polarizer, the polarizer is arranged on the light entrance side of the first type light intensity sensor, the microprocessor comprises a judgment and output unit, the judgment and output unit is configured to judge whether the incident light is polarized light according to a plurality of light intensity values obtained by the plurality of first type light intensity sensors, and further judge the type of the reading object, and the microprocessor is configured to output eye protection prompt information according to the type of the reading object.

[0005] For example, according to the eye protection device provided by at least one embodiment of the present disclosure, wherein the plurality of first type light intensity sensors are respectively connected with the microprocessor, the judgment and output unit is configured to determine the light intensity interval in which the plurality of light intensity values obtained by the plurality of first type light intensity sensors are located, and compare the maximum difference value of the plurality of light intensity values with the light intensity threshold value of the light intensity interval, so that the microprocessor obtains eye use environment information according to the comparison result and outputs eye protection prompt information accordingly.

[0006] For example, according to the eye protection device provided by at least one embodiment of the present disclosure, wherein the light intensity interval comprises a sum value interval, the judgment and output unit is configured to determine the sum value interval corresponding to the sum value of the plurality of light intensity values obtained by the plurality of first type light intensity sensors, and compare the maximum difference value of the plurality of light intensity values with the light intensity threshold value corresponding to the sum value interval, so that the microprocessor outputs eye protection prompt information according to the comparison result.

[0007] For example, the eye-care device according to at least one of the embodiments of the present disclosure, wherein the light intensity interval comprises a percentage interval, the judging and outputting unit is configured to determine a percentage interval corresponding to a difference percentage between a maximum light intensity value and a minimum light intensity value in the plurality of light intensity values obtained by the plurality of first-type light intensity sensors, and compare the maximum difference of the plurality of light intensity values with a light intensity threshold value corresponding to the percentage interval, so that the microprocessor outputs the eye-care prompt information according to the comparison result.

[0008] For example, the eye-care device according to at least one of the embodiments of the present disclosure, wherein the microprocessor is configured to output the prompt information that the incident light is from a non-paper reading material when the maximum difference of the plurality of light intensity values is greater than the light intensity threshold value.

[0009] For example, the eye-care device according to at least one of the embodiments of the present disclosure, wherein the extension directions of the light transmission axes of the plurality of polarizing plates are different.

[0010] For example, the eye-care device according to at least one of the embodiments of the present disclosure, wherein the plurality of first-type light intensity sensors comprises a first light intensity sensor and a second light intensity sensor, the light intensity signals respectively collected by the first light intensity sensor and the second light intensity sensor when the eye-care device is in the same posture are a group of light intensity collection signals, the judging and outputting unit is configured to judge according to at least two groups of light intensity collection signals, and when the judging and outputting unit obtains that the incident light is polarized light according to at least one group of light intensity collection signals, the microprocessor outputs the prompt information that the light intensity signal is from a non-paper reading material, the at least two groups of light intensity collection signals correspond to the eye-care device in different postures.

[0011] For example, the eye-care device according to at least one of the embodiments of the present disclosure, wherein the extension directions of the light transmission axes of the two polarizing plates respectively located on the light-incident side of the first light intensity sensor and the second light intensity sensor are perpendicular to each other.

[0012] For example, the eye-care device according to at least one of the embodiments of the present disclosure, wherein the number of the plurality of first-type light intensity sensors is not less than 3, the extension directions of the light transmission axes of the plurality of polarizing plates arranged on the light-incident side of the plurality of first-type light intensity sensors are parallel to the same plane, the plane is perpendicular to the light-incident direction of the first-type light intensity sensor, and the extension directions of the light transmission axes of at least three polarizing plates are different.

[0013] For example, the eye-care device according to at least one of the embodiments of the present disclosure, wherein the included angle between the extension directions of the light transmission axes of two adjacent polarizing plates is the same as the included angle between the extension directions of the light transmission axes of another two adjacent polarizing plates.

[0014] For example, the eye-care device according to at least one embodiment of the present disclosure, wherein the microprocessor is further configured to calibrate the light intensity values collected by the plurality of first-type light intensity sensors in a calibration phase, so that the initial light intensity values of the plurality of first-type light intensity sensors corresponding to natural light are substantially equal.

[0015] For example, the eye-care device according to at least one embodiment of the present disclosure, wherein the microprocessor is further configured to fit the light intensity curves of the plurality of first-type light intensity sensors in the calibration phase, so that the light intensity curves of the plurality of first-type light intensity sensors corresponding to natural light are substantially coincident.

[0016] For example, the eye-care device according to at least one embodiment of the present disclosure, wherein after the calibration phase and before determining the type of the reading object by using the eye-care device, the microprocessor is further configured to determine the light intensity interval and the light intensity threshold of the eye-care device.

[0017] For example, the eye-care device according to at least one embodiment of the present disclosure, wherein the plurality of first-type light intensity sensors are arranged at intervals, and the eye-care device further comprises a barrier located in the interval between adjacent first-type light intensity sensors.

[0018] For example, the eye-care device according to at least one embodiment of the present disclosure, wherein the eye-care device further comprises a second-type light intensity sensor connected to the microprocessor and configured to detect the intensity of ultraviolet light.

[0019] For example, the eye-care device according to at least one embodiment of the present disclosure, wherein the eye-care device further comprises a distance measuring sensor located in the acquisition circuit module and connected to the microprocessor, and the distance measuring sensor is configured to measure the distance between the distance measuring sensor and the reading object.

[0020] For example, the eye-care device according to at least one embodiment of the present disclosure, wherein the eye-care device further comprises a posture sensor located in the main control circuit module, and the posture sensor is connected to the microprocessor and configured to identify the user's posture.

[0021] For example, the eye-care device according to at least one embodiment of the present disclosure, wherein the eye-care device further comprises a battery management unit located in the acquisition circuit module, the battery management unit is configured to provide power to the main control circuit module and the acquisition circuit module, and detect the charging voltage and working voltage of the battery; a wireless transmission unit connected to the microprocessor and configured to send and receive wireless data; and an alarm module connected to the microprocessor and configured to issue an alarm prompt message.

[0022] For example, the number of the plurality of first type light intensity sensors is one of 3, 4, 5 and 6 according to the eye protection device provided by at least one embodiment of the present disclosure.

[0023] For example, the circuit structure connected with the microprocessor of the plurality of first type light intensity sensors is the same according to the eye protection device provided by at least one embodiment of the present disclosure.

[0024] The control method of the eye protection device provided by at least one embodiment of the present disclosure comprises: collecting a plurality of light intensity values by a plurality of first type light intensity sensors, the light entry side of the first type light intensity sensor is provided with a polarizer; determining whether the incident light is polarized light by a judgment and output unit in the microprocessor, and further determining the type of the read material; and outputting eye protection prompt information corresponding to the type of the read material by the microprocessor.

[0025] The control method of the eye protection device provided by at least one embodiment of the present disclosure, wherein the determination of whether the incident light is polarized light by the judgment and output unit in the microprocessor, and further determining the type of the read material comprises: determining the light intensity interval of the plurality of light intensity values obtained by the plurality of first type light intensity sensors, and comparing the maximum difference of the plurality of light intensity values with the light intensity threshold of the light intensity interval, so that the microprocessor obtains eye use environment information according to the comparison result and outputs eye protection prompt information accordingly.

[0026] The control method of the eye protection device provided by at least one embodiment of the present disclosure, wherein the outputting of the eye protection prompt information corresponding to the type of the read material by the microprocessor comprises: when the maximum difference of the plurality of light intensity values is greater than the light intensity threshold of the light intensity interval, the microprocessor outputs the prompt information that the light comes from non-paper read material.

[0027] The control method of the eye protection device provided by at least one embodiment of the present disclosure, wherein before the collecting of the plurality of light intensity values by the plurality of first type light intensity sensors, the control method of the eye protection device further comprises a calibration stage, in which the light intensity values collected by the plurality of first type light intensity sensors are calibrated by a calibration unit, so that the initial light intensity values corresponding to natural light of the plurality of first type light intensity sensors are substantially equal.

[0028] The control method of the eye protection device provided by at least one embodiment of the present disclosure, wherein in the calibration stage, before the collecting of the plurality of light intensity values by the plurality of first type light intensity sensors, the control method of the eye protection device further comprises a fitting process, in which the light intensity curves of the plurality of first type light intensity sensors are fitted by the microprocessor, so that the light intensity curves corresponding to natural light of the plurality of first type light intensity sensors are substantially coincided.

[0029] According to the control method of the eye protection device provided by at least one embodiment of the present disclosure, after the calibration stage and before determining the type of the reading object by using the eye protection device, the control method further comprises determining the light intensity interval and the light intensity threshold of the eye protection device, comprising: collecting N groups of initial light intensity signals corresponding to natural light by using the plurality of first type light intensity sensors, N being a positive integer; calculating the sum value of the initial light intensity value corresponding to each group of initial light intensity signals; arranging the sum values of the N groups of initial light intensity values in sequence; dividing the light intensity interval according to the distribution of the N sum values; and setting the difference between the maximum initial light intensity value and the minimum initial light intensity value in the same group of initial light intensity values in each light intensity interval as the light intensity threshold of the light intensity interval.

[0030] According to the control method of the eye protection device provided by at least one embodiment of the present disclosure, the determination of the light intensity interval and the light intensity threshold of the eye protection device further comprises: calculating the difference percentage between the maximum initial light intensity value and the minimum initial light intensity value corresponding to each group of initial light intensity signals; arranging the difference percentages of the plurality of groups of initial light intensity values in sequence in the light intensity interval divided according to the distribution of the N sum values; dividing the difference percentage interval according to the distribution of the plurality of groups of difference percentages in each light intensity interval; and setting the difference between the maximum initial light intensity value and the minimum initial light intensity value in the same group of initial light intensity values in each difference percentage interval as the light intensity threshold of the light intensity interval.

[0031] According to the control method of the eye protection device provided by at least one embodiment of the present disclosure, the control method further comprises: measuring the distance between the eye protection device and the reading object by using the distance measuring sensor; identifying the user's posture by using the posture sensor; and sending the corresponding distance information and posture information to the display component by the microprocessor. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, but not limit the present disclosure.

[0033] Figure 1 The overall schematic diagram of the eye protection device provided by at least one embodiment of the present disclosure.

[0034] Figure 2 The partial schematic diagram of the eye protection device provided by at least one embodiment of the present disclosure.

[0035] Figure 3 The distribution diagram of the light intensity data collected in the calibration stage of the eye protection device provided by at least one embodiment of the present disclosure.

[0036] Figure 4A partial structural schematic diagram of an eye protection device provided in at least one embodiment of the present disclosure.

[0037] Figure 5 A schematic diagram corresponding to the extension direction of the pass axis of the polarizer of the eye protection device. Figure 4

[0038] Figure 6 A partial structural schematic diagram of another eye protection device provided in at least one embodiment of the present disclosure.

[0039] Figure 7 A schematic diagram corresponding to the extension direction of the pass axis of the polarizer of the eye protection device. Figure 6

[0040] Figure 8A A whole schematic diagram of an eye protection device provided in at least one embodiment of the present disclosure.

[0041] Figure 8B A schematic diagram of an eye protection device provided in at least one embodiment of the present disclosure when being detected.

[0042] Figure 9 A partial circuit schematic diagram of a first type of light intensity sensor in at least one embodiment of the present disclosure.

[0043] Figure 10 A partial connection circuit diagram of a first type of light intensity sensor and a microprocessor in at least one embodiment of the present disclosure.

[0044] Figure 11 A flow schematic diagram of a control method of an eye protection device provided in at least one embodiment of the present disclosure.

[0045] Figure 12 A flow schematic diagram of determining a light intensity threshold in a control method of an eye protection device in at least one embodiment of the present disclosure. DETAILED DESCRIPTION

[0046] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without any creative effort belong to the protection scope of the present disclosure.

[0047] ​​Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the meanings as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terms "first", "second", and similar terms are used to distinguish one element from another, and are not necessarily used to describe a sequential or chronological order. The terms "comprises", "comprising", "includes", "including" and the like can mean encompassing, containing or subsumed of the elements listed after such terms and not exclude other elements.

[0048] The terms "vertical", "parallel", and "same" used in the embodiments of the present disclosure include the strict "vertical", "parallel", "same" and the "approximately vertical", "approximately parallel", "approximately same" with certain errors, which, considering the measurement and the error related to the measurement of a specific quantity (that is, the limitation of the measurement system), represent the acceptable deviation range for the specific value determined by the person skilled in the art. The "center" in the embodiments of the present disclosure can include the position strictly located at the geometric center and the position of the approximate center located within a small area around the geometric center.

[0049] With the rapid development of science and technology, computers, mobile phones, tablets and other electronic devices have entered people's daily life. Teenagers and children inevitably come into contact with such electronic devices at an early stage of growth. Some survey results show that the probability of myopia among teenagers is relatively high, and the main reasons include incorrect reading habits and unsatisfactory lighting environment not meeting national standards.

[0050] In view of the incorrect reading habits of teenagers and children, the usual solution is to use auxiliary equipment for forced correction, but this way is not convenient to operate. Subsequently, some intelligent electronic devices that can measure distance, angle and other physical parameters have also gradually appeared. These devices can prompt the user's reading posture.

[0051] However, the various eye protection devices currently appearing in the market are difficult to effectively identify the type of reading material, that is, they cannot accurately and efficiently identify whether the user is watching electronic devices such as mobile phones and computers or paper books. Correspondingly, due to the different types of reading materials, the user's safe eye parameters are different, for example, the light intensity environment, eye use time and eye use distance for electronic screens and paper reading materials may be different.

[0052] Based on this, at least one embodiment of the present disclosure provides an eye protection device, which includes a main control circuit module and a data acquisition circuit module. The main control circuit module includes a microprocessor; the data acquisition circuit module includes multiple light intensity acquisition units, each light intensity acquisition unit including a first type of light intensity sensor and a polarizer. The polarizer is disposed on the light incident side of the first type of light intensity sensor. The microprocessor includes a judgment and output unit, which is configured to determine whether the incident light is polarized light based on multiple light intensity values ​​corresponding to the multiple first type of light intensity sensors, and then determine the type of the object being read. The microprocessor is configured to output eye protection prompt information based on the type of the object being read.

[0053] The eye protection device provided in at least one embodiment of this disclosure, by setting a polarizer on the light-incident side of each first type of light intensity sensor, can determine the type of the reading object based on the intensity of natural light incident and the intensity of polarized light incident, and then output corresponding eye protection prompts through a microprocessor, which helps to reduce the user's eye fatigue and protect the user's vision.

[0054] The eye protection device and its control method provided in the embodiments of this disclosure are described below with reference to the accompanying drawings.

[0055] Figure 1 This is an overall schematic diagram of an eye protection device provided in at least one embodiment of the present disclosure.

[0056] like Figure 1 As shown, at least one embodiment of this disclosure provides an eye protection device 01, which includes a data acquisition circuit module 10 and a main control circuit module 20. For example, the data acquisition circuit module 10 and the main control circuit module 20 are electrically connected to each other. The data acquisition circuit module 10 includes a plurality of light intensity acquisition units 100. For example, the light intensity acquisition unit 100 may include a first type of light intensity sensor 101 and a polarizer (not shown in the figure), and the polarizer is disposed on the light-incident side of the first type of light intensity sensor 101. For example, the data acquisition circuit module 10 is installed at the transmitting end and the receiving end of the eye protection device 01, and the main control circuit module 20 is installed inside the eye protection device 01. For example, the data acquisition circuit module 10 and the main control circuit module 20 can be connected by a flexible flat cable (FFC), but are not limited thereto.

[0057] like Figure 1As shown, the master control circuit module 20 includes a microprocessor 21, and the first type light intensity sensor 101 can receive incident light and feed back the obtained light intensity to the microprocessor 21. The microprocessor 21 includes a judgment and output unit 211 configured to judge whether the incident light is polarized light according to the light intensity values obtained by the first type light intensity sensor 101, and further judge the type of the read object, and the microprocessor 21 is configured to output eye protection prompt information according to the type of the read object. For example, the light intensity value obtained by the first type light intensity sensor 101 refers to the light intensity value generated by the first type light intensity sensor 101 according to the collected incident light.

[0058] For example, as shown in Figure 1 For example, the incident light can refer to the light incident from the read object to the eye protection device 01, for example, when the read object is a paper book, the incident light is natural light. For example, when the read object comes from electronic devices such as mobile phones and computers that emit polarized light, the incident light is polarized light. For example, the judgment and output unit 211 is provided with a light intensity interval, and each light intensity interval corresponds to a light intensity threshold. The judgment and output unit 211 can determine the light intensity interval in which the light intensity values obtained by the plurality of first type light intensity sensors 101 are located, and compare the light intensity values with the light intensity threshold corresponding to the light intensity interval, and further determine the type of the incident light according to the comparison result.

[0059] For example, as shown in Figure 1 For example, the microprocessor 21 can output corresponding eye protection prompt information to the user according to the type of the read object. For example, the eye protection prompt information can include the distance between the human eye and the read object, the reading posture of the user, and the like. Therefore, the user can timely adjust according to the eye protection prompt information, which is beneficial to reduce the risk of visual fatigue, myopia, and the like. For example, the microprocessor 21 can also provide the user with daily reports, weekly reports, monthly reports, and behavior warnings, but is not limited thereto.

[0060] As shown in Figure 1 As shown, the eye protection device 01 provided by at least one embodiment of the present disclosure can judge the type of the read object according to the intensity of the natural light and the polarized light after being incident by setting a polarizer on the light incident side of each first type light intensity sensor 101, and further output corresponding eye protection prompt information through the microprocessor 21, which is beneficial to reduce the visual fatigue of the user and protect the vision of the user. The system of the eye protection device has strong reliability and anti-interference ability.

[0061] For example, as shown in Figure 1As shown, before the eye protection device 01 works, the microprocessor 21 is configured to calibrate the eye protection device 01. According to the characteristics of natural light, the vibration intensity of natural light in each direction is the same, so when the natural light passes through the polarizer arranged on the light entrance side of each first type light intensity sensor 101, the light intensity will become half of the intensity of the incident light. Therefore, when the incident light is natural light, the light intensity values of the plurality of first type light intensity sensors 101 received by the microprocessor 21 are basically the same. According to the characteristics of polarized light, the light intensity values of the polarized light after passing through the polarizer on the light entrance side of the plurality of first type light intensity sensors 101 are not completely the same, so they can be distinguished from natural light. Based on this principle, in the calibration stage, the microprocessor 21 is also configured to calibrate the light intensity values collected by the plurality of first type light intensity sensors 101, so that the initial light intensity values of the plurality of first type light intensity sensors 101 corresponding to natural light are basically equal, so that the detection results of the plurality of first type light intensity sensors 101 have higher accuracy.

[0062] Figure 2 A partial schematic view of an eye protection device provided by at least one embodiment of the present disclosure; Figure 3 A distribution diagram of light intensity data collected by an eye protection device provided by at least one embodiment of the present disclosure in a calibration stage.

[0063] For example, as shown in FIG. 1, the eye protection device 01 includes a plurality of first type light intensity sensors 101. For example, the plurality of first type light intensity sensors 101 can include a first light intensity sensor 1011 and a second light intensity sensor 1012. The first light intensity sensor 1011 and the second light intensity sensor 1012 correspond to the same posture of the eye protection device 01 and collect a group of light intensity signals. Figure 2 For example, as shown in FIG. 1, the eye protection device 01 includes a plurality of first type light intensity sensors 101. For example, the plurality of first type light intensity sensors 101 can include a first light intensity sensor 1011 and a second light intensity sensor 1012. The first light intensity sensor 1011 and the second light intensity sensor 1012 correspond to the same posture of the eye protection device 01 and collect a group of light intensity signals.

[0064] For example, as shown in FIG. 1, the eye protection device 01 includes a plurality of first type light intensity sensors 101. For example, the plurality of first type light intensity sensors 101 can include a first light intensity sensor 1011 and a second light intensity sensor 1012. The first light intensity sensor 1011 and the second light intensity sensor 1012 correspond to the same posture of the eye protection device 01 and collect a group of light intensity signals. Figure 2 and Figure 3As shown, during the calibration phase, natural light is used as the incident light, and nine sets of initial light intensity values ​​are collected using the first light intensity sensor 1011 and the second light intensity sensor 1012. Of course, the number of initial light intensity values ​​is not limited to nine sets; for example, more than nine sets of initial light intensity values ​​can be collected to improve calibration accuracy. For example, a main control chip is provided in the microprocessor 21, and the initial light intensity values ​​collected by multiple sets of the first type of light intensity sensor 101 can be recorded in the main control chip. Light intensity curve N1 represents the light intensity value curve formed by sequentially connecting the light intensity values ​​collected by the first light intensity sensor 1011; light intensity curve N2 represents the light intensity value curve formed by sequentially connecting the light intensity values ​​collected by the second light intensity sensor 1012; and light intensity curve N3 represents the light intensity value curve formed by sequentially connecting the differences corresponding to each set of light intensity values ​​(for example, the difference between the light intensity values ​​of the first light intensity sensor 1011 and the second light intensity sensor 1012).

[0065] For example, such as Figures 1-3 As shown, the microprocessor 21 is also configured to fit the light intensity curves of multiple first-type light intensity sensors 101 during the calibration phase, so that the light intensity curves of the multiple first-type light intensity sensors 101 corresponding to natural light substantially coincide. For example, for the same set of light intensity value data, the microprocessor 21 can add the light intensity value in light intensity value curve N2 to the light intensity value corresponding to light intensity value curve N3, thereby making the light intensity value curve of the fitted second light intensity sensor 1012 substantially coincide with the light intensity value curve N1. For example, a control program can be set in the main control chip of the microprocessor 21 to realize the above fitting process, but it is not limited to this. Thus, when natural light is used as the incident light, the light intensity values ​​obtained by the multiple calibrated first-type light intensity sensors 101 are substantially the same, thereby the multiple first-type light intensity sensors 101 have high accuracy in acquiring light intensity values.

[0066] Table 1 is a table of light intensity data collected by the eye protection device provided in at least one embodiment of this disclosure during the stage of determining the light intensity threshold.

[0067] Table 1

[0068]

[0069] For example, such as Figure 1 As shown, after calibrating the multiple first-type light intensity sensors 101 in the eye protection device 01, and before using the eye protection device 01 to determine the type of the reading material, the microprocessor 21 in the eye protection device 01 is also configured to determine the light intensity range and light intensity threshold of the eye protection device 01.

[0070] For example, such as Figure 1 , Figure 2and Table 1, two first-type light intensity sensors are arranged in the eye protection device 01. First, the first-type light intensity sensor 1011 and the first-type light intensity sensor 1012 are configured to respectively collect a plurality of groups of light intensity data, and the microprocessor 21 can determine the light intensity difference value, the difference percentage, and the light intensity sum value in each group of light intensity data. For example, the light intensity interval can include a sum value interval, that is, according to the distribution of a plurality of sum values of a plurality of groups of light intensity values, a plurality of groups of light intensity data with a similar distribution of light intensity sum values are divided into the same interval. For example, taking the light intensity interval in Table 1 as an example, the light intensity sum value in the first light intensity interval 301 is 100-400, the light intensity sum value in the second light intensity interval 302 is 420-610, and the light intensity sum value in the third light intensity interval 303 is greater than 700. For example, the light intensity threshold value in the light intensity interval refers to the maximum difference value of the light intensity value in the interval. For example, the maximum difference value of the light intensity value in the first light intensity interval 301 is 31, the maximum difference value of the light intensity value in the second light intensity interval 302 is 13.75, and the maximum difference value in the third light intensity interval 303 is 14.75. The maximum difference value of the light intensity value in each light intensity interval corresponds to the light intensity threshold value.

[0071] Further, as shown in Table 1, Figure 1 Further, as shown in Table 1, the light intensity interval can also include a percentage interval, that is, after dividing the interval according to the sum value distribution, the microprocessor 21 can further divide the difference percentage interval according to the distribution of the difference percentage of a plurality of groups of light intensity values. For example, a plurality of groups of light intensity values with similar difference percentage fluctuations can be placed in the same difference percentage interval in the same light intensity interval after dividing according to the sum value distribution, and the maximum difference value of the light intensity value in the difference percentage interval corresponding to the difference percentage interval is taken as the light intensity threshold value. For example, in the first light intensity interval 301, the difference percentage fluctuations of the third to fifth groups of light intensity values are similar, and the difference percentage interval corresponding to the third to fifth groups of light intensity values can be divided into the same difference percentage interval, and the maximum difference value of the light intensity value in the difference percentage interval, that is, 31, is taken as the light intensity threshold value. For example, in the second light intensity interval 302, the difference percentage fluctuations of the sixth and seventh groups of light intensity values are similar and greater than 1%, and the difference percentage interval corresponding to the sixth and seventh groups of light intensity values can be divided into the same difference percentage interval, and the maximum difference value of the light intensity value in the difference percentage interval, that is, 13.75, is taken as the light intensity threshold value. For example, the similar difference percentage fluctuations of a plurality of groups of light intensity values in the same light intensity interval are for the light intensity interval. By further dividing the percentage interval based on the sum value interval, the judgment result of the judgment and output unit can be more accurate.

[0072] It should be noted that it is not necessary to set the difference percentage interval, and in some embodiments of the present disclosure, only the maximum difference of the plurality of light intensity values of the plurality of first type light intensity sensors 101 can be compared with the light intensity threshold corresponding to the sum interval to determine the type of the read material.

[0073] For example, as shown in FIG. 1, the plurality of first type light intensity sensors 101 are respectively connected to the microprocessor 21, and the determination and output unit 211 is configured to determine the light intensity interval in which the plurality of light intensity values corresponding to the plurality of first type light intensity sensors 101 are located, and compare the maximum difference of the plurality of light intensity values with the light intensity threshold of the light intensity interval, so that the microprocessor 21 obtains the eye protection environment information according to the comparison result and outputs the eye protection prompt information accordingly. Figure 1

[0074] For example, as shown in FIG. 1, the plurality of first type light intensity sensors 101 are respectively connected to the microprocessor 21, and the determination and output unit 211 is configured to determine the light intensity interval in which the plurality of light intensity values corresponding to the plurality of first type light intensity sensors 101 are located, and compare the maximum difference of the plurality of light intensity values with the light intensity threshold of the light intensity interval, so that the microprocessor 21 obtains the eye protection environment information according to the comparison result and outputs the eye protection prompt information accordingly. Figure 1 For example, as shown in FIG. 1, the plurality of first type light intensity sensors 101 are respectively connected to the microprocessor 21, and the determination and output unit 211 is configured to determine the light intensity interval in which the plurality of light intensity values corresponding to the plurality of first type light intensity sensors 101 are located, and compare the maximum difference of the plurality of light intensity values with the light intensity threshold of the light intensity interval, so that the microprocessor 21 obtains the eye protection environment information according to the comparison result and outputs the eye protection prompt information accordingly. For example, as shown in FIG. 1, the plurality of first type light intensity sensors 101 are respectively connected to the microprocessor 21, and the determination and output unit 211 is configured to determine the light intensity interval in which the plurality of light intensity values corresponding to the plurality of first type light intensity sensors 101 are located, and compare the maximum difference of the plurality of light intensity values with the light intensity threshold of the light intensity interval, so that the microprocessor 21 obtains the eye protection environment information according to the comparison result and outputs the eye protection prompt information accordingly.

[0075] For example, as shown in FIG. 1, the plurality of first type light intensity sensors 101 are respectively connected to the microprocessor 21, and the determination and output unit 211 is configured to determine the light intensity interval in which the plurality of light intensity values corresponding to the plurality of first type light intensity sensors 101 are located, and compare the maximum difference of the plurality of light intensity values with the light intensity threshold of the light intensity interval, so that the microprocessor 21 obtains the eye protection environment information according to the comparison result and outputs the eye protection prompt information accordingly. Figure 1When the light intensity interval of the eye protection device 01 is a percentage interval, the determining and outputting unit 211 can determine the percentage interval according to the difference percentage between the maximum light intensity value and the minimum light intensity value of the plurality of light intensity values corresponding to the plurality of first type light intensity sensors 101, and compare the maximum difference of the plurality of light intensity values with the light intensity threshold value corresponding to the percentage interval, so that the microprocessor outputs the eye protection prompt information according to the comparison result. For example, when the maximum difference of the plurality of light intensity values is greater than the light intensity threshold value corresponding to the light intensity interval, the microprocessor 21 obtains the information that the incident light is polarized light, so as to determine that the user is reading electronic reading materials. For example, when the maximum difference of the plurality of light intensity values is less than or equal to the light intensity threshold value corresponding to the light intensity interval, the microprocessor 21 can obtain the information that the incident light is natural light, so as to determine that the user is reading paper reading materials, and the microprocessor 21 can output the corresponding eye protection prompt information according to the type of the reading materials, so as to facilitate the user to adjust the viewing state in time.

[0076] Figure 4 A partial structure schematic diagram of an eye protection device provided by at least one embodiment of the present disclosure; Figure 5 Corresponding to Figure 4 A schematic diagram of the extension direction of the pass axis of the polarizer of the eye protection device in the embodiment.

[0077] For example, as shown in Figure 1 The light intensity collecting unit 100 can include the first type light intensity sensor 101, and the extension direction of the pass axis of the polarizer arranged on the light entrance side of the plurality of first type light intensity sensors 101 is different, so as to distinguish natural light and polarized light.

[0078] For example, as shown in Figure 1 , Figure 2 and Figure 4 The number of the first type light intensity sensors 101 in the light intensity collecting unit 100 can be 2. The plurality of first type light intensity sensors 101 can include a first light intensity sensor 1011 and a second light intensity sensor 1012, and the light intensity signals collected by the first light intensity sensor 1011 and the second light intensity sensor 1012 when the eye protection device 01 is in the same posture are a group of light intensity collection signals. The determining and outputting unit 211 is configured to determine according to at least two groups of light intensity collection signals, and when the determining and outputting unit 211 obtains the information that the incident light is polarized light according to at least one group of light intensity collection signals, the microprocessor outputs the prompt information that the light intensity signal comes from non-paper reading materials, and the at least two groups of light intensity collection signals correspond to the eye protection device 01 in different postures.

[0079] Specifically, when the incident light is natural light, the light intensity values ​​collected by the first light intensity sensor 1011 and the second light intensity sensor 1012 are basically equal, and both are half of the incident light. For example, when the incident light is polarized light, the light intensity value after the incident light passes through the deflector satisfies the following formula:

[0080] L=(L0)×(cos 2 μ)

[0081] In the formula, L is the light intensity value after passing through the polarizer, L0 is the initial light intensity value, and μ is the angle between the incident light and the transmission axis of the polarizer.

[0082] For example, such as Figure 4 and Figure 5 As shown, the angle between the polarization direction of the polarized light and the transmission axis of the polarizer 1011A on the incident side of the first light intensity sensor 1011 can be μ1, and the angle between the polarization direction of the polarized light and the transmission axis of the polarizer 1012A on the incident side of the second light intensity sensor 1012 can be μ2. Only when the angles between the polarization direction of the polarized light and the transmission axes of the polarizers 1011A and 1012A are equal, i.e., μ1 = μ2, are the light intensity values ​​obtained by the first light intensity sensor 1011 and the second light intensity sensor 1012 equal. At this time, the angle bisectors of the transmission axes of the polarizers 1011A and 1012A are the same as the polarization direction of the polarized light, and the judgment and output unit 211 can obtain the result that the incident light is polarized light. For example, when the eye protection device 01 changes its posture, that is, when μ1 and μ2 are not equal, the light intensity values ​​obtained by the first light intensity sensor 1011 and the second light intensity sensor 1012 are not equal.

[0083] Therefore, as Figure 1 and Figure 4 As shown, when the number of first-type light intensity sensors 101 in the light intensity acquisition unit 100 is 2, at least two eye protection devices 01 in different postures are needed to detect the light intensity. When the light intensity values ​​obtained by at least one set of first light intensity sensors 1011 and second light intensity sensors 1012 are different, the microprocessor 21 will output a prompt message that the light intensity signal comes from a non-paper reading material. This setting can make the output signal of the microprocessor 21 more accurate, thereby improving the user experience.

[0084] For example, such as Figure 1 , Figure 4 and Figure 5As shown, when the number of the first type light intensity sensors 101 in the light intensity collecting unit 100 is 2, the extension direction of the light transmission axis of the polarizer 1011A located at the light entering side of the first light intensity sensor 1011 is P1, the extension direction of the light transmission axis of the polarizer 1012A located at the light entering side of the second light intensity sensor 1012 is P2, and the extension direction P1 and the extension direction P2 are perpendicular to each other, which is beneficial for design and assembly, but is not limited thereto. For example, in some embodiments of the present disclosure, the angle between the extension direction P1 and the extension direction P2 can also not be 90°, for example, can be at least one of 70°-85°, 70°-80°, and 75°-88°, so that the light intensity collecting unit 100 has a flexible design form, which can be set according to design requirements.

[0085] For example, as shown in Figure 4 The light intensity sensor shown is provided with two first type light intensity sensors 101, so that the occupied space can be saved, which is beneficial for making the light intensity sensor small in size, light in weight, and easy to wear.

[0086] Figure 6 Another partial structure schematic diagram of an eye protection device provided by at least one embodiment of the present disclosure; Figure 7 The extension direction of the light transmission axis of the polarizer corresponding to Figure 6 The extension direction of the light transmission axis of the polarizer corresponding to

[0087] For example, in some embodiments, three or more first type light intensity sensors 101 can also be provided in the eye protection device to improve the judgment ability of the eye protection device and simplify the control process.

[0088] For example, as shown in Figure 6 and Figure 7 As shown, the eye protection device can include a third light intensity sensor 1013, a fourth light intensity sensor 1014, and a fifth light intensity sensor 1015, the extension direction of the light transmission axis of the polarizer 1013A located at the light entering side of the third light intensity sensor 1013 is P3, the extension direction of the light transmission axis of the polarizer 1014A located at the light entering side of the fourth light intensity sensor 1014 is P4, and the extension direction of the light transmission axis of the polarizer 1015A located at the light entering side of the fifth light intensity sensor 1015 is P5. As shown in Figure 7 The extension direction P3, the extension direction P4, and the extension direction P5 are different from each other, and are all parallel to the same plane, which is perpendicular to the light entering direction of the plurality of first type light intensity sensors 101.

[0089] For example, as shown in Figure 6 and Figure 7As shown, in this way, when the incident light is natural light, the light intensity values obtained by the third light intensity sensor 1013, the fourth light intensity sensor 1014 and the fifth light intensity sensor 1015 are substantially equal, so that the maximum difference in the same group of light intensity values is less than the corresponding light intensity threshold. When the incident light is polarized light, since the polarization direction of the polarized light cannot be equal to the extension direction P3, the extension direction P4 and the extension direction P5 at the same time, the light intensity values obtained by the third light intensity sensor 1013, the fourth light intensity sensor 1014 and the fifth light intensity sensor 1015 are not equal, so that the maximum difference in the same group of light intensity values is greater than the corresponding light intensity threshold. Therefore, for the light intensity sensor provided with three first type light intensity sensors 101, the type of incident light can be identified only by detecting a group of light intensity values, so that the detection efficiency can be effectively improved.

[0090] For example, as shown in FIG. 1, the extension direction of the light transmission axis of the first polarizer 1001 is the extension direction P1, the extension direction of the light transmission axis of the second polarizer 1002 is the extension direction P2, and the extension direction of the light transmission axis of the third polarizer 1003 is the extension direction P3. The extension direction of the light transmission axis of the fourth polarizer 1004 is the extension direction P4, and the extension direction of the light transmission axis of the fifth polarizer 1005 is the extension direction P5. Figure 7 As shown, the included angle between the extension direction of the light transmission axis of the two adjacent polarizers is the same as the included angle between the extension direction of the light transmission axis of the other two adjacent polarizers, that is, the angle between the extension direction P3 and the extension direction P4, the angle between the extension direction P4 and the extension direction P5, and the angle between the extension direction P3 and the extension direction P5 are equal to each other, and are all 120°. In this way, the arrangement of the third light intensity sensor 1013, the fourth light intensity sensor 1014 and the fifth light intensity sensor 1015 has symmetry, which is beneficial to simplify the design process. However, the embodiments of the present disclosure are not limited thereto, for example, the angle between the extension direction P3 and the extension direction P4, the angle between the extension direction P4 and the extension direction P5, and the angle between the extension direction P3 and the extension direction P5 can also not be completely equal, and can be set according to design requirements.

[0091] For example, in some embodiments of this disclosure, the number of first-type light intensity sensors 101 in the eye protection device can be one of 3, 4, 5, and 6, so that the eye protection device has a more flexible design. When the number of first-type light intensity sensors in the eye protection device is greater than 3, the polarization directions of the polarizers disposed on the light-incident side of each first-type light intensity sensor are different, and each extension direction is parallel to the same plane, which is perpendicular to the light-incident direction of the multiple first-type light intensity sensors 101. When the incident light is natural light, the light intensity values ​​of the multiple first-type light intensity sensors 101 are basically equal, so that the maximum difference in the same set of light intensity values ​​is less than its corresponding light intensity threshold. When the incident light is polarized light, since the polarization direction of the polarized light cannot be the same as the extension direction of the transmission axis of the polarizer on the light-incident side of each first-type light intensity sensor at the same time, the light intensity values ​​obtained by the multiple first-type light intensity sensors are not equal, so that the maximum difference in the same set of light intensity values ​​is greater than its corresponding light intensity threshold, so that the judgment and output unit can judge the incident light as polarized light accordingly.

[0092] For example, such as Figure 4 and Figure 6 As shown, multiple first-type light intensity sensors 101 are spaced apart, and the eye protection device 01 also includes a partition 111 located in the interval between adjacent first-type light intensity sensors 101. For example, as Figure 4 As shown, the eye protection device includes an end cap 110A, and the end cap 110A includes multiple hollow portions, in which polarizers 1011A and 1012A can be respectively disposed. For example, the portion of the end cap 110A located between two adjacent hollow portions can serve as a partition portion 111. For example, as... Figure 6 As shown, the eye protection device includes an end cap 110B, which has multiple cutouts. Polarizers 1013A, 1014A, and 1015A can be disposed in the cutouts respectively. For example, the portion of the end cap 110B located between two adjacent cutouts can serve as a baffle 111. The baffle 111 reduces the risk of light crosstalk, enabling the first type of light intensity sensor 101 to accurately detect the type of light.

[0093] Figure 8A This is an overall schematic diagram of an eye protection device provided in at least one embodiment of the present disclosure.

[0094] For example, Figure 2 It can be from Figure 8A The front view shown is for observation in the X direction. For example, the eye protection device may also include a second type of light intensity sensor 102, which is integrated with a microprocessor 21 (see...). Figure 1) connected to the microprocessor 21 and configured to detect the intensity of ultraviolet light. For example, the second type light intensity sensor 102 can detect the intensity of ultraviolet light and transmit the intensity information of ultraviolet light to the microprocessor 21, and the microprocessor 21 can output eye protection prompt information about the intensity of ultraviolet light to the user to reduce the risk of injury to the user's eyes and the risk of disease caused by excessive intensity of ultraviolet light. For example, the model of the second type light intensity sensor 102 in the eye protection device can be LTR-390 UV ultraviolet sensor, but is not limited thereto.

[0095] Figure 8B A schematic diagram of the eye protection device provided by at least one embodiment of the present disclosure is shown when detecting. The polarizer 1001 is located on the side of the first type light intensity sensor 101 close to the read object 210, and the first type light intensity sensor 101 is connected to the microprocessor 21. For example, the first type light intensity sensor 101 can be connected to the master chip of the microprocessor 21, but is not limited thereto. For example, the battery management unit 214 is connected to the microprocessor 21 and the first type light intensity sensor 101, respectively, to provide a stable voltage signal. For example, the light from the surface of the read object 210 can irradiate the polarizer 1001 of the eye protection device, and then the first type light intensity sensor 101 obtains the corresponding light intensity value to judge the type of the read object through the judgment and output unit in the microprocessor 21. The judgment process of the judgment and output module is described in the foregoing embodiments and will not be repeated here.

[0096] For example, as shown in Figure 1 and Figure 2 , the eye protection device 01 further comprises a distance measuring sensor 103, which is located in the acquisition circuit module 10 and connected to the microprocessor 21. For example, the distance measuring sensor 103 is configured to measure the distance between the distance measuring sensor 103 and the read object, for example, it can detect the eye use vertical distance between the user and the mobile phone, computer or book, but is not limited thereto. For example, the distance measuring sensor 103 can be a time-of-flight distance measuring sensor. For example, the principle of the distance measuring sensor 103 can be to measure the time difference between the light emitted to the object (for example, the read object) and then reflected back to the distance measuring sensor. The distance between the distance measuring sensor 103 and the measured object is obtained by multiplying the time difference by the speed of light and dividing by 2. For example, the distance measuring sensor 103 can be electrically connected to the microprocessor 21 through IIC (Inter-Integrated Circuit, Inter-Integrated Circuit) and transmit distance data. For example, the model of the distance measuring sensor 103 in the eye protection device 01 can be VL6180 distance measuring sensor, but is not limited thereto.

[0097] For example, as shown in Figure 1As shown, the eye protection device 01 can also include a wireless transmission part 213 connected with the microprocessor, and a display component, the wireless transmission part 213 is configured to send and receive wireless data. For example, the wireless transmission part 213 can include a Bluetooth wireless transmission component, and the display component can include a host computer (such as a WeChat applet of a mobile phone), and the microprocessor 21 can transmit the distance data to the display component through the Bluetooth wireless transmission component for the user to refer to and adjust the eye distance in time.

[0098] For example, as shown in the figure, Figure 1 As shown, the eye protection device 01 also includes a posture sensor 212, which is located in the main control circuit module 20 and connected with the microprocessor 21. For example, the posture sensor 212 is configured to identify the posture of the user, for example, the posture sensor 212 can identify the sitting, lying, lying and other postures of the user, and assist in judging the sleep data. For example, the posture sensor 212 can include a three-axis accelerometer and other motion sensors, and obtain three-dimensional posture and orientation data through the internal processor. For example, the posture sensor 212 can be electrically connected with the microprocessor 21 through IIC, and transmit posture data. For example, the microprocessor 21 can transmit the posture data to the display component through the wireless transmission part 213 for the user to refer to and adjust the reading posture in time.

[0099] For example, as shown in the figure, Figure 1 As shown, the eye protection device 01 also includes a battery management part 214, which is located in the main control circuit module 20, and the battery management part 214 is configured to provide power to the main control circuit module 20 and the acquisition circuit module 10, and detect the charging voltage and working voltage of the battery. For example, the charging voltage of the battery in the eye protection device 01 can be 4.2V-4.5V. For example, the working voltage of the battery can be 3.7V-4V, but not limited to this. For example, the battery management part 214 can include a charging and discharging mode for managing the eye protection device, setting a reasonable charging time and discharging time, and controlling the effective use time of the eye protection device. For example, the battery management part 214 can be provided with a battery charging and discharging chip to control the charging current within a reasonable range, for example, the charging current can be 15mA-18mA, but not limited to this. For example, the charging voltage, working voltage and charging current and other information detected by the battery management part 214 are not sent to the host computer through the wireless transmission part 213, but are stored in the battery charging and discharging chip for battery management.

[0100] For example, as shown in the figure, Figure 1As shown, the eye protection device 01 further comprises an alarm module 215, which is located in the main control circuit module 20 and is configured to issue an alarm prompt information. For example, the alarm module 215 can be a buzzer, but is not limited thereto. For example, the alarm module 215 can be electrically connected with the microprocessor 21 and issue the alarm prompt information under the control of the microprocessor 21. For example, the user can timely adjust the distance from the reading object and the reading posture and the like according to the alarm prompt sound issued by the alarm module 215, but is not limited thereto.

[0101] For example, as shown in FIG. 1, the eye protection device 01 further comprises a plurality of first type light intensity sensors 101, which are arranged on the display component 10 and are configured to detect the intensity of the natural light. Figure 2 As shown, the microprocessor 21 can set the type of the reading object fed back by the plurality of first type light intensity sensors 101, the distance from the reading object transmitted by the distance measuring sensor 103, and the posture information of the user detected by the posture sensor 212 in the same data packet, and send to the display component through the wireless transmission part 213, so that the user can timely adjust to reduce the risk of myopia caused by improper and excessive use of eyes, so that the child's vision can be more safely and efficiently protected. At the same time, the eye protection device provided by the embodiment of the present disclosure has high real-time performance, can correctly identify the eye behavior of the user, meet the use requirements of the user scene, and realize the functions of automatic detection of distance, light intensity, ultraviolet rays, indoor and outdoor detection, and automatic alarm and reminder.

[0102] For example, in some embodiments of the present disclosure, a timer is further arranged in the eye protection device, and the eye protection device can control the optimal use time of the user through the timer after judging the type of the reading object. For example, the optimal use time can be set according to the intensity of the incident light and the intensity of the ambient light. For example, the optimal use time for electronic devices and paper reading objects can be different. For example, the light intensity is different indoors and outdoors, and the optimal use time also has differences. When the user exceeds the optimal use time corresponding to the type of the reading object, the timer can remind the user to rest and control the reasonable outdoor activity time to reduce the risk of excessive use of eyes.

[0103] Figure 9 A partial circuit diagram of the first type light intensity sensor in at least one embodiment of the present disclosure; Figure 10 A partial connection circuit diagram of the first type light intensity sensor and the microprocessor in at least one embodiment of the present disclosure.

[0104] For example, in some embodiments of the present disclosure, the circuit connection structure of each first type light intensity sensor in the eye protection device can be the same, so as to make the intensity values of the natural light corresponding to each first type light intensity sensor substantially the same. For example, as shown in FIG. 1, the plurality of first type light intensity sensors 101 are electrically connected with the microprocessor 21 through the same connection circuit. Figure 9As shown, the local circuit of the eye protection device can be located on the detection current plate of the first type of light intensity sensor, but is not limited thereto. The local circuit includes a first input end 401, a resistor 402, a capacitor 403, a second input end 404, a first output end 405, a second output end 406, a third output end 407, and a fourth output end 408. For example, the first output end 404 is connected to the battery management unit to receive an input voltage from the battery management unit, for example, the input voltage can be 1.8V, but is not limited thereto. For example, the resistor 402 and the capacitor 403 can function as a filter to make the signal transmission in the circuit more stable. For example, the resistance value of the resistor 402 can be 22 ohms, the capacitor 403 can be 1 μF, the accuracy is 10%, and the withstand voltage is 10V, but is not limited thereto. For example, the first type of light intensity sensor 101 receives an input signal through the second input end 404, and the first output end 404 can be used as a ground terminal, but is not limited thereto. For example, the first type of light intensity sensor 101 can feed back state information to the microcontroller through the second output end 406. For example, when the first type of light intensity sensor 101 collects a light intensity signal, the first type of light intensity sensor 101 feeds back a high level signal of the state information through the second output end 406, so that the microcontroller can perform a light intensity value reading operation. For example, when the microcontroller completes the reading operation, the first type of light intensity sensor 101 feeds back a low level signal of the state information through the second output end 406. For example, the third output end 407 is configured to transmit a data signal, for example, the output end can provide a data signal. The fourth output end 408 is configured to output a level signal corresponding to the data signal, for example, the output end can provide a clock signal.

[0105] For example, as shown in FIG. 4, the second type of light intensity sensor 102 can be configured to transmit a data signal through the third output end 407, and the fourth output end 408 can be configured to output a level signal corresponding to the data signal. Figure 9 and Figure 10As shown, the microprocessor includes a first receiving end 501, a second receiving end 502, a third receiving end 503, a fourth receiving end 504, a first output end 505, and a second output end 506. For example, the first receiving end 501 and the second receiving end 502 can receive an input voltage from the battery management unit, for example, the input voltage can be 1.8V, but is not limited thereto. For example, the microprocessor is further provided with a first resistor 509 and a second resistor 510 to stabilize the signal. For example, the third receiving end 503 of the microprocessor can be connected with the third output end 407 of the first type light intensity sensor 101, and the fourth receiving end 504 of the microprocessor can be connected with the fourth output end 408 of the first type light intensity sensor 101. For example, the microprocessor further includes a first transistor 507 and a second transistor 508. For example, when the signal received by the third receiving end 503 of the microprocessor is high, the first transistor 507 is not conductive, and the first output end 505 of the microprocessor outputs a signal corresponding to the high level; on the contrary, the first output end 505 of the microprocessor outputs a signal corresponding to the low level, so as to realize the conversion of high and low levels.

[0106] Figure 11 A flowchart of a control method of an eye protection device is provided for at least one embodiment of the present disclosure.

[0107] As Figure 11 shown, at least one embodiment of the present disclosure further provides a control method of an eye protection device, including the following steps:

[0108] S101: Collecting a plurality of light intensity values by a plurality of first type light intensity sensors, the light entrance side of the first type light intensity sensor being provided with a polarizer;

[0109] S102: Using a judgment and output unit in a microprocessor to judge whether the incident light is polarized light, and further judging the type of the read object;

[0110] S103: Outputting eye protection prompt information corresponding to the type of the read object by the microprocessor.

[0111] For example, as Figure 1 shown, the eye protection device 01 can include a first type light intensity sensor 101 and a microprocessor 21, and the first type light intensity sensor 101 is connected with the microprocessor 21. The plurality of light intensity values collected by the plurality of first type light intensity sensors can be sent to the microprocessor 21.

[0112] For example, as Figure 1As shown, the light-incident side of the first-type light intensity sensor is provided with a polarizer, and the microprocessor 21 has a judging and outputting unit to judge the type of the read object according to the plurality of light intensity values from the first-type light intensity sensor 101. For example, when the judging and outputting unit obtains that the read object comes from natural light according to the plurality of light intensity values, the type of the read object can be judged as a paper book; when the judging and outputting unit obtains that the read object comes from polarized light according to the plurality of light intensity values, the type of the read object can be judged as an electronic device emitting polarized light, for example, a mobile phone, a computer, etc., at this time, the microprocessor can output corresponding eye protection prompt information to the user accordingly. For example, the eye protection prompt information output by the microprocessor can not only include the type of the read object, but also include the user's posture, the eye distance, and other related information, which are not limited by the embodiments of the present disclosure.

[0113] The control method of the eye protection device provided by at least one embodiment of the present disclosure can identify the type of the incident light according to the light intensity value of the incident light of the first-type light intensity sensor 101, and further judge whether the read object is a paper book or an electronic device emitting polarized light, and meanwhile, output corresponding eye protection prompt information through the microprocessor, which is conducive to reducing the visual fatigue of the user and protecting the vision of the user.

[0114] For example, before step S101, the control method of the eye protection device 01 further includes a calibration stage. In the calibration stage, the light intensity values collected by the plurality of first-type light intensity sensors 101 are calibrated by a calibration unit, so that the initial light intensity values of the plurality of first-type light intensity sensors 101 corresponding to natural light are substantially equal, so that the detection results of the plurality of first-type light intensity sensors 101 have higher accuracy. For example, the calibration unit can be located in the master control chip in the microprocessor, but is not limited thereto.

[0115] For example, as shown in Figure 2 For example, as shown in

[0116] For example, as shown in Table 3, during the calibration phase, natural light is used as the incident light, and nine sets of initial light intensity values ​​are collected using the first light intensity sensor 1011 and the second light intensity sensor 1012, but this is not limited to these. For example, the initial light intensity values ​​collected by the first type of light intensity sensor 101 can be recorded in the main control chip, and the microprocessor 21 can sequentially generate light intensity value curve N1, which is a sequential connection of the light intensity values ​​collected by the first light intensity sensor 1011; light intensity value curve N2, which is a sequential connection of the light intensity values ​​collected by the second light intensity sensor 1012; and light intensity value curve N3, which is a sequential connection of the differences corresponding to each set of light intensity values ​​(e.g., the difference between the light intensity values ​​of the first light intensity sensor 1011 and the light intensity values ​​of the second light intensity sensor 1012).

[0117] Then, the control method for the eye protection device also includes a fitting process. During the fitting process, the microprocessor can fit the light intensity curves of multiple first-type light intensity sensors so that the light intensity curves of the multiple first-type light intensity sensors corresponding to natural light substantially overlap. For example, for the same set of light intensity value data, the microprocessor 21 can add the light intensity value in light intensity curve N2 to the light intensity value corresponding to light intensity curve N3, thereby making the fitted light intensity value curve of the second light intensity sensor 1012 substantially overlap with the light intensity value curve N1. For example, a control program can be set in the main control chip of the microprocessor 21 to implement the above fitting process, but it is not limited to this.

[0118] Therefore, when natural light is used as the incident light, the light intensity values ​​obtained by the multiple calibrated first-type light intensity sensors 101 are basically the same, thus enabling the multiple first-type light intensity sensors 101 to have high accuracy when collecting light intensity values.

[0119] Figure 12 This is a schematic flowchart illustrating the process of determining a light intensity threshold in the control method of an eye protection device in at least one embodiment of the present disclosure.

[0120] For example, such as Figure 12 As shown, after the calibration stage and before using the eye protection device to determine the type of incident light, it is necessary to determine the light intensity range and light intensity threshold by a microprocessor for subsequent determination of the type of reading material. This includes the following steps:

[0121] S201: Use multiple first-type light intensity sensors 101 to collect N sets of initial light intensity signals corresponding to natural light, where N is a positive integer;

[0122] S202: Calculate the sum of the initial light intensity values ​​corresponding to each group of initial light intensity signals;

[0123] S203: The sum of N initial light intensity values ​​arranged in sequence;

[0124] S204: divide the light intensity intervals according to the distribution of the N sum values; and

[0125] S205: set the difference between the maximum initial light intensity value and the minimum initial light intensity value in the same group of initial light intensity values in each light intensity interval as the light intensity threshold of the light intensity interval.

[0126] For example, as shown in Table 1, two first-type light intensity sensors are arranged in the eye protection device 01. For example, with natural light as the incident light, 10 groups of light intensity data are collected by the first-type light intensity sensor 1011 and the first-type light intensity sensor 1012. The sum value of the initial light intensity, the light intensity difference value, and the difference percentage of each group of light intensity data are determined by the judgment and output unit. For example, the light intensity interval can include a sum value interval, i.e., an interval divided according to the distribution of the multiple sum values of the multiple groups of light intensity values, but is not limited thereto. For example, the light intensity threshold in the light intensity interval refers to the difference between the maximum light intensity value and the minimum light intensity value in the interval.

[0127] For example, as shown in Table 1, according to the distribution of the multiple sum values of the groups of light intensity values, the sum values of the 10 groups of initial light intensity values are arranged in order. Table 1 is an example of arranging in ascending order of the sum values, but is not limited thereto. Then, the microprocessor can divide multiple sum value intervals according to this, for example: a first light intensity interval 301 with a light intensity sum value of 100-400, a second light intensity interval 302 with a light intensity sum value of 420-610, and a third light intensity interval 303 with a light intensity sum value greater than 700. At the same time, the microprocessor determines the difference between the maximum light intensity value and the minimum light intensity value in each light intensity interval as the corresponding light intensity threshold, i.e., the light intensity threshold corresponding to the first light intensity interval 301 is 31, the light intensity threshold corresponding to the second light intensity interval 302 is 13.75, and the light intensity threshold corresponding to the third light intensity interval 303 is 14.75.

[0128] For example, as shown in Table 1, after dividing the intervals according to the sum value distribution, the judgment and output unit 211 can further divide the difference percentage interval according to the distribution of the difference percentage of the multiple groups of light intensity values. For example, the judgment and output unit 211 can divide the multiple groups of light intensity values with similar difference percentage fluctuations into the same difference percentage interval in the same light intensity interval, and take the maximum difference of the light intensity values corresponding to the difference percentage interval as the light intensity threshold. That is, the judgment and output unit can further divide the sum value interval according to the distribution of the difference percentage on the basis of the sum value interval.

[0129] For example, as shown in Table 1, in the first light intensity interval 301, the fluctuation of the difference percentage of the light intensity values of the 3rd to 5th groups is similar (i.e. the values are close), and thus the difference percentage interval corresponding to the light intensity values of the 3rd to 5th groups can be divided into the same difference percentage interval, and the maximum light intensity difference of the light intensity values in the difference percentage interval, i.e. 31, is taken as the light intensity threshold; the difference percentage interval corresponding to the light intensity values of the 1st to 2nd groups in the first light intensity interval 301 is divided into the same difference percentage interval, and the maximum light intensity difference of the light intensity values in the difference percentage interval, i.e. 3, is taken as the light intensity threshold. For example, in the second light intensity interval 302, the fluctuation of the difference percentage of the light intensity values of the 6th to 7th groups is similar, both greater than 1%, and thus the difference percentage interval corresponding to the light intensity values of the 6th to 7th groups can be divided into the same difference percentage interval, and the maximum difference of the light intensity values in the difference percentage interval, i.e. 13.75, is taken as the light intensity threshold; and the difference percentage interval corresponding to the light intensity values of the remaining 8th to 9th groups is divided into the same difference percentage interval, and the maximum difference of the light intensity values in the difference percentage interval, i.e. 2.75, is taken as the light intensity threshold. The similar fluctuation of the difference percentage of the light intensity values of multiple groups in the same light intensity interval is for the light intensity interval. By dividing the percentage interval again on the basis of the sum interval, the determination result of the determination and output unit can be more accurate.

[0130] For example, in step S102, the determination and output unit in the microprocessor determines whether the incident light is polarized light, and further determines the type of the read object can include: determining the light intensity interval in which the multiple light intensity values obtained by the multiple first-type light intensity sensors 101 are located, and comparing the maximum difference of the multiple light intensity values with the light intensity threshold of the light intensity interval, so that the microprocessor 21 obtains the eye protection environment information according to the comparison result and outputs the eye protection prompt information accordingly.

[0131] For example, as shown in Table 1, when the determination and output unit determines the light intensity interval of the eye protection device 01 and the corresponding light intensity threshold, the eye protection device 01 can enter the determination stage. That is, the determination and output unit can determine the light intensity interval in which the sum of the multiple light intensity values of the multiple first-type light intensity sensors 101 is located, and compare the maximum difference of the multiple light intensity values with the light intensity threshold corresponding to the light intensity interval. Thus, in step S103, the microprocessor 21 can output the corresponding eye protection prompt information according to the type of the read object.

[0132] For example, as shown in Table 1, when the determination and output unit determines the light intensity interval of the eye protection device 01 and the corresponding light intensity threshold, the eye protection device 01 can enter the determination stage. That is, the determination and output unit can determine the light intensity interval in which the sum of the multiple light intensity values of the multiple first-type light intensity sensors 101 is located, and compare the maximum difference of the multiple light intensity values with the light intensity threshold corresponding to the light intensity interval. Thus, in step S103, the microprocessor 21 can output the corresponding eye protection prompt information according to the type of the read object. Figure 1As shown in Table 1, when the maximum difference between multiple light intensity values ​​is greater than the light intensity threshold corresponding to that light intensity range, the microprocessor 21 obtains information that the incident light is polarized light, thereby determining that the user's reading material is not paper-based, such as an electronic book. For example, when the maximum difference between multiple light intensity values ​​is less than or equal to the light intensity threshold corresponding to that light intensity range, the microprocessor 21 obtains information that the incident light is natural light, thereby determining that the user is reading a paper-based book, and can then send the user corresponding eye protection reminder information.

[0133] For example, such as Figure 1 As shown, the control method of the eye protection device provided in at least one embodiment of this disclosure further includes: measuring the distance between the distance sensor 103 and the reading material using a distance sensor 103; identifying the user's posture using a posture sensor; and sending the corresponding distance information and posture information to the mobile terminal display component via the microprocessor 21.

[0134] For example, such as Figure 1 As shown, the microprocessor in the eye protection device can control the ranging sensor 103 to measure the distance between itself and the object being read, such as detecting the vertical viewing distance between the user and a mobile phone, computer, or book. For example, the microprocessor can also control the posture sensor 212 to recognize the user's posture, such as sitting, lying down, or reclining, and can assist in judging sleep data. The microprocessor can set the type of the object being read fed back by multiple first-type light intensity sensors 101, the distance information between the ranging sensor 103 and the object being read transmitted by it, and the user's posture information detected by the posture sensor 212 into a single data packet, and transmit it to the display unit via the wireless transmission unit 213 for the user to adjust accordingly.

[0135] For example, the structure of the eye protection device involved in the control method provided in the embodiments of this disclosure can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0136] The eye-care device of the embodiments of the present application can further include one or more processors and one or more memories. The processor can process data signals and can include various computing structures, such as a complex instruction set computer (CISC) architecture, a reduced instruction set computer (RISC) architecture, or a structure implementing a combination of multiple instruction sets. The memory can store instructions and / or data for execution by the processor. The instructions and / or data can include code for implementing some or all of the functions of one or more devices described in the embodiments of the present application. For example, the memory can include dynamic random access memory (DRAM), static random access memory (SRAM), flash memory, optical memory, or other memory well known to those skilled in the art.

[0137] In some embodiments of the present application, the eye-care device includes code and programs stored in the memory; the processor can execute the code and programs to implement some or all of the functions of the eye-care device as described above.

[0138] In some embodiments of the present application, the eye-care device can be a special hardware device for implementing some or all of the functions of the eye-care device as described above. For example, the eye-care device can be a circuit board or a combination of multiple circuit boards for implementing the functions as described above. In the embodiments of the present application, the circuit board or the combination of multiple circuit boards can include: (1) one or more processors; (2) one or more non-transitory computer-readable memories connected to the processor; and (3) firmware stored in the memory and executable by the processor.

[0139] The following points need to be explained:

[0140] (1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can be referred to the general design.

[0141] (2) In the case of no conflict, the features in the same and different embodiments of the present disclosure can be combined with each other.

[0142] The above description is only exemplary embodiments of the present disclosure, and is not intended to limit the protection scope of the present disclosure, and the protection scope of the present disclosure is determined by the appended claims.

Claims

1. An eye protection device, comprising: The main control circuit module includes a microprocessor; The data acquisition circuit module includes multiple light intensity acquisition units. The light intensity acquisition unit includes a first type of light intensity sensor and a polarizer, wherein the polarizer is disposed on the light incident side of the first type of light intensity sensor. The microprocessor includes a judgment and output unit, which is configured to determine whether the incident light is polarized light based on multiple light intensity values ​​obtained from multiple first-type light intensity sensors, and thus determine the type of the object being read. The microprocessor is configured to output eye-protection tips based on the type of the reading material. Multiple type-1 light intensity sensors are respectively connected to the microprocessor. The judgment and output unit is configured to determine the light intensity range in which the multiple light intensity values ​​obtained by the plurality of first-type light intensity sensors fall, and compare the maximum difference between the multiple light intensity values ​​with the light intensity threshold of the light intensity range, so that the microprocessor obtains eye-use environment information based on the comparison result and outputs eye protection prompt information accordingly. The light intensity range includes a sum value range. The judgment and output unit is configured to determine the sum range corresponding to the sum of multiple light intensity values ​​obtained by the plurality of first-type light intensity sensors, and compare the maximum difference of the plurality of light intensity values ​​with the light intensity threshold corresponding to the sum range, so that the microprocessor outputs eye protection prompt information based on the comparison result.

2. The eye protection device according to claim 1, wherein, The light intensity range includes a percentage range. The judgment and output unit is configured to determine the percentage difference range corresponding to the percentage difference between the maximum light intensity value and the minimum light intensity value among the multiple light intensity values ​​obtained by the multiple first-type light intensity sensors, and compare the maximum difference of the multiple light intensity values ​​with the light intensity threshold corresponding to the percentage range, so that the microprocessor outputs eye protection prompt information based on the comparison result.

3. The eye protection device according to claim 1 or 2, wherein, The microprocessor is configured to output a prompt message indicating that the incident light is from a non-paper reading material when the maximum difference between the plurality of light intensity values ​​is greater than the light intensity threshold.

4. The eye protection device according to claim 1 or 2, wherein, The transmission axes of the multiple polarizers extend in different directions.

5. The eye protection device according to claim 4, wherein, The plurality of first-type light intensity sensors include a first light intensity sensor and a second light intensity sensor. When the first light intensity sensor and the second light intensity sensor are in the same posture of the eye protection device, the light intensity signals collected by them respectively constitute a set of light intensity acquisition signals. The judgment and output unit is configured to make a judgment based on at least two sets of light intensity acquisition signals. When the judgment and output unit determines that the incident light is polarized light based on at least one set of light intensity acquisition signals, the microprocessor outputs a prompt message that the light intensity signal comes from a non-paper reading material. The at least two sets of light intensity acquisition signals correspond to the eye protection device in different postures.

6. The eye protection device according to claim 5, wherein, The transmission axes of the two polarizers located on the light-incident sides of the first and second light-incident sensors extend perpendicularly to each other.

7. The eye protection device according to claim 4, wherein, The number of the plurality of first-type light intensity sensors is not less than 3. The transmission axes of the plurality of polarizers disposed on the light-incident side of the plurality of first-type light intensity sensors extend parallel to the same plane, the plane being perpendicular to the light-incident direction of the first-type light intensity sensors, and the transmission axes of at least three of the polarizers extend in different directions.

8. The eye protection device according to claim 7, wherein, The angle between the extension directions of the transmission axes of two adjacent polarizers is the same as the angle between the extension directions of the transmission axes of two other adjacent polarizers.

9. The eye protection device according to claim 1 or 2, wherein, The microprocessor is also configured to calibrate the light intensity values ​​collected by the plurality of first-type light intensity sensors during the calibration phase, so that the initial light intensity values ​​of the plurality of first-type light intensity sensors corresponding to natural light are substantially equal.

10. The eye protection device according to claim 9, wherein, The microprocessor is also configured to fit the light intensity curves of the plurality of first-type light intensity sensors during the calibration phase, such that the light intensity curves of the plurality of first-type light intensity sensors correspond to natural light substantially overlap.

11. The eye protection device according to claim 9, wherein, After the calibration phase, and before using the eye protection device to determine the type of the reading material, the microprocessor is also configured to determine the light intensity range and light intensity threshold of the eye protection device.

12. The eye protection device according to claim 1 or 2, wherein, The plurality of first-type light intensity sensors are spaced apart, and the eye protection device further includes a partition, which is located in the interval between adjacent first-type light intensity sensors.

13. The eye protection device according to claim 1 or 2 further includes a second type of light intensity sensor, the second type of light intensity sensor being connected to the microprocessor and configured to detect the intensity of ultraviolet light.

14. The eye protection device according to claim 1 or 2, further comprising: A distance sensor, located in the acquisition circuit module and connected to the microprocessor, is configured to measure the distance between itself and the object being read.

15. The eye protection device according to claim 1 or 2, further comprising: An attitude sensor is located in the main control circuit module. The attitude sensor is connected to the microprocessor and is configured to recognize user postures.

16. The eye protection device according to claim 1 or 2, further comprising: A battery management unit, located in the acquisition circuit module, is configured to provide power to the main control circuit module and the acquisition circuit module, and to detect the charging voltage and operating voltage of the battery. The wireless transmission unit, connected to the microprocessor, is configured to transmit and receive wireless data; as well as An alarm module, connected to the microprocessor, is configured to issue alarm notification information.

17. The eye protection device according to claim 7, wherein, The number of multiple Type I light intensity sensors is one of 3, 4, 5, or 6.

18. The eye protection device according to claim 1 or 2, wherein, The circuit structure of the multiple Type I light intensity sensors connected to the microprocessor is the same.

19. A method for controlling an eye protection device, comprising: Multiple light intensity values ​​are collected by multiple first-type light intensity sensors, and a polarizer is provided on the light incident side of the first-type light intensity sensor. The microprocessor uses a judgment and output unit to determine whether the incident light is polarized based on the multiple light intensity values, and then determines the type of the object being read. as well as The microprocessor outputs eye-protection tips corresponding to the type of the book being read. The step of using the judgment and output unit in the microprocessor to determine whether the incident light is polarized light based on the multiple light intensity values, and then determining the type of the object being read, includes: The system determines the light intensity range in which multiple light intensity values ​​obtained from the plurality of first-type light intensity sensors fall, and compares the maximum difference between the multiple light intensity values ​​with the light intensity threshold of the light intensity range. This allows the microprocessor to obtain eye-use environment information based on the comparison result and output eye-protection prompts accordingly. The control method further includes determining the light intensity range and light intensity threshold of the eye protection device. The determination of the light intensity range and light intensity threshold of the eye protection device includes: The plurality of first-type light intensity sensors are used to collect N sets of initial light intensity signals corresponding to natural light, where N is a positive integer; Calculate the sum of the initial light intensity values ​​corresponding to each set of initial light intensity signals; The sum of the N initial light intensity values ​​are arranged in sequence; Divide the light intensity intervals according to the distribution of N sum values; The difference between the maximum and minimum initial light intensity values ​​in the same set of initial light intensity values ​​within each light intensity interval is set as the light intensity threshold for that light intensity interval.

20. The control method for the eye protection device according to claim 19, wherein, The step of outputting eye-protection prompts corresponding to the type of the read material via the microprocessor includes: When the maximum difference between the plurality of light intensity values ​​is greater than the light intensity threshold of the light intensity range, the microprocessor outputs a prompt message indicating that the incident light is from a non-paper reading material.

21. The control method for the eye protection device according to claim 20, wherein, Before acquiring multiple light intensity values ​​through multiple first-type light intensity sensors, the control method of the eye protection device further includes a calibration phase. During the calibration phase, the light intensity values ​​collected by the plurality of first-type light intensity sensors are calibrated by the calibration unit so that the initial light intensity values ​​of the plurality of first-type light intensity sensors corresponding to natural light are substantially equal.

22. The control method for the eye protection device according to claim 21, wherein, Before acquiring multiple light intensity values ​​using multiple first-type light intensity sensors during the calibration phase, the control method for the eye protection device also includes a fitting process. During the fitting process, the microprocessor fits the light intensity curves of the plurality of first-type light intensity sensors so that the light intensity curves of the plurality of first-type light intensity sensors corresponding to natural light basically overlap.

23. The control method for the eye protection device according to claim 22, wherein the determination of the light intensity range and light intensity threshold of the eye protection device is performed after the calibration stage and before the type of the reading material is determined using the eye protection device.

24. The control method for the eye protection device according to claim 19, wherein determining the light intensity range and light intensity threshold of the eye protection device further includes: Calculate the percentage difference between the maximum and minimum initial light intensity values ​​corresponding to each set of initial light intensity signals; Within the light intensity intervals divided according to the distribution of N sum values, the percentage difference of multiple sets of the initial light intensity values ​​is arranged in sequence; The difference percentage intervals are divided according to the distribution of multiple sets of difference percentages in each of the light intensity intervals; The difference between the maximum and minimum initial light intensity values ​​in the same set of initial light intensity values ​​within each of the said difference percentage intervals is set as the light intensity threshold for that light intensity interval.

25. The control method for the eye protection device according to any one of claims 19-24, further comprising: The distance between the object being read and the distance sensor is measured. Use attitude sensors to identify user posture; as well as The microprocessor sends the corresponding distance and attitude information to the display component.

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