Method and equipment for adjusting light intensity

[0075] The specific implementation manners of the present application will be described in further detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the application, but are not used to limit the scope of the application.

[0076] Those skilled in the art understand that in the embodiments of the present application, the size of the sequence number of the following steps does not mean the order of execution. The order of execution of each step should be determined by its function and internal logic, and it does not apply to this application. The implementation process of the embodiment constitutes any limitation.

[0077] figure 1 It is a flowchart of a light intensity adjustment method according to an embodiment of the present application, and the method can be implemented on, for example, a light intensity adjustment device. Such as figure 1 As shown, the method includes:

[0078] S120: Acquire EEG information corresponding to at least one eye of the user;

[0079] S140: Determine the power percentage of the EEG information in the predetermined frequency band in the EEG information;

[0080] S160: Adjust the luminous intensity of a light-emitting device at least according to the power ratio and a reference value.

[0081] The method described in the embodiment of the present application obtains EEG information corresponding to at least one eye of the user, determines the power proportion of the EEG information of a predetermined frequency band in the EEG information, and then at least according to the power proportion and a reference value Adjust the luminous intensity of a light-emitting device. The method adjusts the luminous intensity of the light-emitting device according to the EEG information of at least one eye of the user, thereby avoiding dependence on ambient light, and more truly reflecting the comfort level of the eye during viewing, which is beneficial to improve user experience.

[0082] The functions of the steps S120, S140, and S160 will be described in detail below in conjunction with specific implementations.

[0083] S120: Acquire EEG information corresponding to at least one eye of the user.

[0084] Wherein, the EEG information corresponding to the at least one eye is EEG information affected by the optic nerve, so that when the light stimulates the eye, the EEG information will change. The EEG information can be as follows figure 2 The 10/20 system shown is collected from Fz, Cz, Pz, or Oz locations, or close to the Fz, Cz, Pz, or Oz locations.

[0085] S140: Determine the power percentage of the EEG information in the predetermined frequency band in the EEG information.

[0086] Wherein, the EEG information of the predetermined frequency band is EEG information that is greatly affected by light, and can be EEG information of any frequency band between 5 Hz and 9 Hz (may include 5 Hz and 9 Hz), for example, it can be 6-8 Hz. EEG information, or, for example, 7-9 Hz EEG information.

[0087] The power ratio may be the ratio of the power of the brain electrical information in the predetermined frequency band to the power of the brain electrical information. In this step, for example, Fourier transform of the EEG information can be performed to convert it to the frequency domain, and then the power ratio of EEG information of the predetermined frequency band can be calculated and determined; or, the EEG information can also be obtained by filtering. The EEG information of the predetermined frequency band is then calculated, and the power percentage is calculated.

[0088] S160: Adjust the luminous intensity of a light-emitting device at least according to the power ratio and a reference value.

[0089] Wherein, the light-emitting device may be, for example, any device that can emit light, such as a display device with a display screen, a lamp, and the like. The lamps may be LED lamps, fluorescent lamps, incandescent lamps, etc., for example. Since the situation of the display device is relatively complicated, the following description will be given by taking the light-emitting device as the display device.

[0090] In the course of research, the inventor found that the proportion of the power will change with the change of light intensity. Specifically, such as image 3 As shown, when the light is dark, the power of the EEG information of 5-9 Hz is relatively high; when the brightness gradually increases, the power percentage is gradually reduced. Therefore, the power ratio can actually reflect the light intensity. In this embodiment, it is based on this principle to realize the adjustment of the luminous intensity of the light-emitting device.

[0091] One of the main purposes of adjusting the luminous intensity of the light-emitting device in step S160 is to make the user's eyes feel comfortable, that is, the brightness is moderate. Therefore, in an embodiment, the method further includes:

[0092] S150: Determine the reference value.

[0093] In an embodiment, the reference value is the power percentage of the EEG information of the predetermined frequency band when at least one eye of the user perceives the light to be moderate, that is, when the EEG information of the predetermined frequency band is When the power ratio of the information is the reference value, the user feels that the luminous intensity of the corresponding light-emitting device is moderate.

[0094] In another embodiment, the reference value is the light intensity value when at least one eye of the user perceives the light to be moderate, that is to say, when the light intensity felt by the user’s eyes is the reference value Value, the user feels that the luminous intensity of the corresponding light-emitting device is moderate.

[0095] Those skilled in the art understand that whether the reference value is the power ratio of the EEG information in the predetermined frequency band or the light intensity value, it can be determined through experiments. For example, during the experiment, the luminous intensity of the light-emitting device is gradually changed, and when the user feels comfortable, the corresponding light intensity value and the power ratio of the EEG information of the predetermined frequency band are recorded, and calculated based on the experimental results similar to the above experiments. The average value can determine the reference value.

[0096] The inventor found in the research process that the reference value will vary from user to user, that is to say, different users feel that the light intensity value is different when the brightness is moderate. Correspondingly, the power of the EEG information in the predetermined frequency band The proportion is also different. Therefore, in an embodiment, the step S150 further includes:

[0097] S150': Determine the reference value according to the user.

[0098] In the course of research, the inventor also discovered that the reference value varies with the type of displayed content. The type of the displayed content can be divided into text, picture and other content, for example. That is, for the same user, when viewing different types of display content, the light intensity values ​​that make the user feel that the brightness is moderate are different, and correspondingly, the power ratio of the EEG information of the predetermined frequency band is also different. Therefore, in an embodiment, the step S150 further includes:

[0099] S150": Determine the reference value according to the type of display content of the light-emitting device.

[0100] In this embodiment, the user may be subjected to preliminary experiments on different types of display content, and then the reference value can be determined for each type of display content.

[0101] Those skilled in the art understand that the method can also determine the reference value according to the type of the user and the displayed content at the same time.

[0102] As described above, the reference value may be the power ratio of the EEG information in the predetermined frequency band when at least one eye of the user perceives the light to be moderate. Accordingly, the step S160 may further include:

[0103] S161: In response to the power ratio being higher than the reference value, increase the luminous intensity of the light-emitting device;

[0104] S162: In response to the power accounted for being lower than the reference value, reduce the luminous intensity of the light-emitting device.

[0105] In this embodiment, the luminous intensity of the light-emitting device may be adjusted incrementally or decrementally according to a predetermined step size according to the comparison result of the power ratio and the reference value, and the luminous intensity can be adjusted It will cause the change of the power ratio of the EEG information of the predetermined frequency band. By repeatedly executing the method, the amplitude value can be gradually adjusted to be close to the reference value, and the luminous intensity can be adjusted to a moderate intensity. . The advantage of this adjustment method is that the amount of calculation is low.

[0106] In addition, in order to avoid adjusting the luminous intensity of the light-emitting device too frequently, the step S160 further includes:

[0107] S163: In response to the absolute value of the difference between the power ratio and the reference value being less than a threshold, stop adjusting the luminous intensity of the light-emitting device.

[0108] The threshold may be set according to user requirements. For example, when the user is more sensitive to the luminous intensity, the threshold may be set to be smaller. In addition, this step S163 is not necessarily executed after the steps S161 and S162, and it may also be executed before the steps S161 and S162.

[0109] As described above, the reference value may also be the light intensity value when at least one eye of the user perceives the light to be moderate. Accordingly, the step S160 may further include:

[0110] S161': In response to the light intensity value corresponding to the power ratio being higher than the reference value, reduce the luminous intensity of the light-emitting device;

[0111] S162': In response to the light intensity value corresponding to the power ratio being lower than the reference value, increase the luminous intensity of the light-emitting device.

[0112] In this embodiment, it is necessary to first determine the light intensity value corresponding to the power percentage, and then adjust the light intensity value based on the comparison result of the light intensity value and the reference value. The light intensity value corresponding to the power percentage may be determined according to a predetermined correspondence relationship. For example, in the training experiment stage, the luminous intensity of the light-emitting device is continuously changed and the power proportion of the EEG information of the predetermined frequency band of the user is recorded, so as to obtain Figure 4 Shown is a curve of correspondence between luminous intensity and power ratio. According to this curve, the light intensity value corresponding to the power percentage can be easily obtained.

[0113] In addition, in this embodiment, the step S160 may further include:

[0114] S163': In response to the absolute value of the difference between the light intensity value corresponding to the power percentage and the reference value being less than a threshold value, stop adjusting the luminous intensity of the light-emitting device.

[0115] Similarly, the step S163' is not necessarily executed after the steps S161' and S162', it may also be executed before the steps S161' and S162'.

[0116] As mentioned above, the method can predetermine the corresponding relationship between the luminous intensity and the power percentage, and according to the corresponding relationship, the power percentage and the reference value, it can be calculated to determine the effect of the light-emitting device The adjustment amount of the luminous intensity of the light-emitting device can further adjust the luminous intensity of the light-emitting device to an intensity that the user feels comfortable in one step. Specifically, in an implementation manner, the step S160 may include:

[0117] S161": Determine an intensity difference value according to the power ratio, the reference value and a predetermined corresponding relationship;

[0118] S162": Adjust the luminous intensity according to the intensity difference.

[0119] In this embodiment, the reference value may be the power percentage of the EEG information of the predetermined frequency band when at least one eye of the user perceives the light to be moderate, or it may be the light or dark perceived by at least one eye of the user. Moderate light intensity value.

[0120] Suppose the predetermined corresponding relationship is as Figure 4 In the corresponding curve shown, it is assumed that the reference value is the power percentage of the EEG information of the predetermined frequency band when at least one eye of the user perceives the light to be moderate, and the reference value corresponds to Figure 4 At the point R2, it is assumed that the current detected power of the EEG information of the predetermined frequency band of the at least one eye corresponds to Figure 4 In the R1 point, according to the corresponding relationship curve, it can be obtained that the luminous intensity value corresponding to R2 is L2, the luminous intensity value corresponding to R1 is L1, and the intensity difference is ΔL=L1-L2. Therefore, the luminous intensity of the light-emitting device can be reduced by ΔL in the step S162".

[0121] Still assuming that the corresponding relationship is as Figure 4 In the corresponding curve shown, it is assumed that the reference value is the light intensity value when at least one eye of the user perceives the light to be moderate, and the reference value corresponds to Figure 4 At the point L2, it is assumed that the power ratio of the EEG information of the predetermined frequency band of the at least one eye currently detected corresponds to Figure 4 In the middle of the R1 point, according to the corresponding relationship curve, the luminous intensity value corresponding to R1 can be obtained as L1, and the intensity difference is ΔL=L1-L2. Therefore, the luminous intensity of the light-emitting device can be reduced by ΔL in the step S162".

[0122] In this embodiment, an intensity difference is determined according to the power ratio, the reference value, and a predetermined corresponding relationship, and then the luminous intensity of the light-emitting device can be quickly adjusted according to the intensity difference to a moderate user perception Its strength lies in its fast adjustment speed.

[0123] The method may of course be executed at a predetermined time interval, for example, the EEG information is obtained every 1 minute, and the EEG information is adjusted according to the power ratio of the EEG information of the predetermined frequency band and the reference value. The luminous intensity of the luminaire. However, this adjustment method may lead to higher energy consumption and is not very necessary.

[0124] Therefore, in an embodiment, the step S120 further includes:

[0125] S120': In response to the user starting to watch the display content of the light-emitting device, and/or the type of the display content is changed, obtain the brain electrical information.

[0126] That is, when the user starts to watch the display content of the light-emitting device, and/or when the type of the display content is changed, the execution of the method is triggered. Therefore, the frequency of execution of the method can be reduced, and energy consumption can be reduced. Wherein, the type of the displayed content may include: text, image, and other content.

[0127] In addition, the user's eye movements such as blinking may generate noise on the EEG information. Therefore, in an implementation manner, the method may further include:

[0128] S130: Extract the target EEG information corresponding to the target eye movement type from the EEG information.

[0129] Correspondingly, the step S140 further includes:

[0130] S140': Determine the power percentage of the EEG information of the predetermined frequency band in the target EEG information.

[0131] Those skilled in the art understand that the eye movements of the human eye can be roughly divided into three types: horizontal saccade, fixation and blinking. Blinking generally causes noise. Therefore, the target eye movement type in the step S130 may be, for example, horizontal glance or fixation.

[0132] In the step S140', the power percentage of the EEG information in the predetermined frequency band may be determined according to the target EEG information. That is to say, in this embodiment, the essence is to select some specific EEG information from the initially obtained EEG information, and then calculate the power proportion of the EEG information in the predetermined frequency band according to the specific EEG information, so that Improve the execution accuracy of the method.

[0133] In addition, embodiments of the present application also provide a computer-readable medium, including computer-readable instructions that perform the following operations when executed: figure 1 The operations of steps S120, S140, and S160 of the method in the illustrated embodiment.

[0134] In summary, the method adjusts the luminous intensity of the light-emitting device according to the EEG information corresponding to at least one eye of the user, which can avoid dependence on ambient light, and can more truly reflect the comfort level of the eyes during viewing, which is beneficial to improve user experience.

[0135] Figure 5 It is a schematic diagram of the module structure of the light intensity adjustment device according to an embodiment of the present invention. The light intensity adjustment device can be used as a functional module in a wearable device such as a smart helmet, and of course can also be used as an independent terminal device for users to use . Such as Figure 5 As shown, the light intensity adjusting device 500 may include:

[0136] An acquisition module 510, configured to acquire EEG information corresponding to at least one eye of the user;

[0137] A power percentage determining module 520, configured to determine the power percentage of EEG information in a predetermined frequency band in the EEG information;

[0138] An adjustment module 530 is used to adjust the luminous intensity of a light-emitting device at least according to the power ratio and a reference value.

[0139] The light intensity adjustment device described in the embodiment of the present application obtains EEG information corresponding to at least one eye of the user, and then determines the power proportion of the EEG information of a predetermined frequency band in the EEG information, and finally at least according to the power proportion And a reference value to adjust the luminous intensity of a luminous device. In the process of adjusting the luminous intensity of the light-emitting device, the device can avoid dependence on ambient light, and can more truly reflect the comfort level of the eyes in the viewing process, which is beneficial to improve user experience.

[0140] The light intensity adjustment device may be the same as or different from the light emitting device. In the case where the two are different, the light intensity adjusting device may communicate with the light emitting device to control and adjust the light emitting intensity of the light emitting device.

[0141] Hereinafter, the functions of the obtaining module 510, the power ratio determining module 520, and the adjusting module 530 will be described in detail in conjunction with specific implementation manners.

[0142] The acquiring module 510 is configured to acquire EEG information corresponding to at least one eye of the user.

[0143] Wherein, the EEG information corresponding to the at least one eye is EEG information affected by the optic nerve, so that when the light stimulates the eye, the EEG information will change. The EEG information can be as follows figure 2 The 10/20 system shown is collected from Fz, Cz, Pz, or Oz locations, or close to the Fz, Cz, Pz, or Oz locations.

[0144] The power proportion determining module 520 is used to determine the power proportion of the EEG information of a predetermined frequency band in the EEG information.

[0145] Wherein, the EEG information of the predetermined frequency band is EEG information that is greatly affected by light, and can be EEG information of any frequency band between 5 Hz and 9 Hz (may include 5 Hz and 9 Hz), for example, it can be 6-8 Hz. EEG information, or, for example, 7-9 Hz EEG information.

[0146] The power ratio may be the ratio of the power of the brain electrical information in the predetermined frequency band to the power of the brain electrical information. In this step, for example, Fourier transform of the EEG information can be performed to convert it to the frequency domain, and then the power ratio of EEG information of the predetermined frequency band can be calculated and determined; or, the EEG information can also be obtained by filtering. The EEG information of the predetermined frequency band is then calculated, and the power percentage is calculated.

[0147] The adjustment module 530 is configured to adjust the luminous intensity of a light-emitting device at least according to the power ratio and a reference value.

[0148] Wherein, the light-emitting device may be, for example, any device that can emit light, such as a display device with a display screen, a lamp, and the like. The lamps may be LED lamps, fluorescent lamps, incandescent lamps, etc., for example. Since the situation of the display device is relatively complicated, the following description will be given by taking the light-emitting device as the display device.

[0149] One main purpose of adjusting the luminous intensity of the light-emitting device is to make the user's eyes feel comfortable, that is, the brightness is moderate. Therefore, in one embodiment, see Image 6 , The device 500 further includes:

[0150] A reference value determining module 540 is used to determine the reference value.

[0151] In an embodiment, the reference value is the power percentage of the EEG information of the predetermined frequency band when at least one eye of the user perceives the light to be moderate, that is, when the EEG information of the predetermined frequency band is When the power ratio of the information is the reference value, the user feels that the luminous intensity of the corresponding light-emitting device is moderate.

[0152] In another embodiment, the reference value is the light intensity value when at least one eye of the user perceives the light to be moderate, that is to say, when the light intensity felt by the user’s eyes is the reference value Value, the user feels that the luminous intensity of the corresponding light-emitting device is moderate.

[0153] Those skilled in the art understand that whether the reference value is the power ratio of the EEG information in the predetermined frequency band or the light intensity value, it can be determined through experiments. For example, during the experiment, the luminous intensity of the light-emitting device is gradually changed, and when the user feels comfortable, the corresponding light intensity value and the power ratio of the EEG information of the predetermined frequency band are recorded, and calculated based on the experimental results similar to the above experiments. The average value can determine the reference value.

[0154] The inventor found in the research process that the reference value will vary from user to user, that is to say, different users feel that the light intensity value is different when the brightness is moderate. Correspondingly, the power of the EEG information in the predetermined frequency band The proportion is also different. Therefore, in an embodiment, the reference value determining module 540 is configured to determine the reference value according to the user.

[0155] In the course of research, the inventor also discovered that the reference value varies with the type of displayed content. The type of the displayed content can be divided into text, picture and other content, for example. That is, for the same user, when viewing different types of display content, the light intensity values ​​that make the user feel that the brightness is moderate are different, and correspondingly, the power ratio of the EEG information of the predetermined frequency band is also different. Therefore, in one embodiment, the reference value determining module 540 is configured to determine the reference value according to the type of display content of the light-emitting device.

[0156] In this embodiment, the user may be subjected to preliminary experiments on different types of display content, and then the reference value may be determined for each type of display content.

[0157] Those skilled in the art understand that the method can also determine the reference value according to the type of the user and the displayed content at the same time.

[0158] As described above, the reference value may be the power percentage of the EEG information of the predetermined frequency band when at least one eye of the user perceives the light to be moderate. Accordingly, the adjustment module 530 is configured to respond to If the power ratio is higher than the reference value, the luminous intensity of the light-emitting device is increased, and in response to the power ratio is lower than the reference value, the luminous intensity of the light-emitting device is reduced.

[0159] In this embodiment, the luminous intensity of the light-emitting device may be adjusted incrementally or decrementally according to a predetermined step size according to the comparison result of the power ratio and the reference value, and the luminous intensity can be adjusted It will cause the change of the power ratio of the EEG information of the predetermined frequency band. By repeating the operation, the amplitude value can be gradually adjusted to be close to the reference value, and the luminous intensity can be adjusted to a moderate intensity. . The advantage of this adjustment method is that the amount of calculation is low.

[0160] In addition, in order to avoid adjusting the luminous intensity of the light-emitting device too frequently, the adjustment module 530 is further configured to stop the adjustment in response to the absolute value of the difference between the power ratio and the reference value being less than a threshold. The luminous intensity of the light-emitting device.

[0161] The threshold may be set according to user requirements. For example, when the user is more sensitive to the luminous intensity, the threshold may be set to be smaller.

[0162] As described above, the reference value may also be the light intensity value when at least one eye of the user perceives the light to be moderate. Correspondingly, in another embodiment, the adjustment module 530 is configured to respond to If the light intensity value corresponding to the power proportion is higher than the reference value, the luminous intensity of the light-emitting device is reduced, and in response to the light intensity value corresponding to the power proportion being lower than the reference value, the The luminous intensity of the luminaire.

[0163] In this embodiment, it is necessary to first determine the light intensity value corresponding to the power percentage, and then adjust the light intensity value based on the comparison result of the light intensity value and the reference value. The light intensity value corresponding to the power percentage may be determined according to a predetermined correspondence relationship. For example, in the training experiment stage, the luminous intensity of the light-emitting device is continuously changed and the power proportion of the EEG information of the predetermined frequency band of the user is recorded, so as to obtain Figure 4 Shown is a curve of correspondence between luminous intensity and power ratio. According to this curve, the light intensity value corresponding to the power ratio can be easily obtained.

[0164] In addition, the adjustment module 530 is further configured to stop adjusting the luminous intensity of the light-emitting device in response to the absolute value of the difference between the light intensity value corresponding to the power percentage and the reference value being less than a threshold.

[0165] As mentioned above, the device may pre-determine the correspondence between the luminous intensity and the power ratio, and according to the correspondence, and the power ratio and the reference value, it can be calculated to determine that the light emitting device is The adjustment amount of the luminous intensity of the light-emitting device can further adjust the luminous intensity of the light-emitting device to an intensity that the user feels comfortable in one step. Specifically, in one embodiment, see Figure 7 , The adjustment module 530 includes:

[0166] An intensity difference determining unit 531, configured to determine an intensity difference value according to the power ratio, the reference value, and a predetermined corresponding relationship;

[0167] An adjustment unit 532 is used to adjust the luminous intensity according to the intensity difference.

[0168] In this embodiment, the reference value may be the power percentage of the EEG information of the predetermined frequency band when at least one eye of the user perceives the light to be moderate, or it may be the light or dark perceived by at least one eye of the user. Moderate light intensity value.

[0169] Suppose the predetermined corresponding relationship is as Figure 4 In the corresponding curve shown, it is assumed that the reference value is the power percentage of the EEG information of the predetermined frequency band when at least one eye of the user perceives the light to be moderate, and the reference value corresponds to Figure 4 At the point R2, it is assumed that the current detected power of the EEG information of the predetermined frequency band of the at least one eye corresponds to Figure 4 In the R1 point, according to the corresponding relationship curve, the luminous intensity value corresponding to R2 can be obtained as L2, the luminous intensity value corresponding to R1 is L1, and the intensity difference is ΔL=L1-L2. Thus, the luminous intensity of the light-emitting device can be reduced by ΔL.

[0170] Still assuming that the corresponding relationship is as Figure 4 In the corresponding curve shown, it is assumed that the reference value is the light intensity value when at least one eye of the user perceives the light to be moderate, and the reference value corresponds to Figure 4 At the point L2, it is assumed that the power ratio of the EEG information of the predetermined frequency band of the at least one eye currently detected corresponds to Figure 4 In the middle of the R1 point, according to the corresponding relationship curve, the luminous intensity value corresponding to R1 can be obtained as L1, and the intensity difference is ΔL=L1-L2. Thus, the luminous intensity of the light-emitting device can be reduced by ΔL.

[0171] In this embodiment, an intensity difference is determined according to the power ratio, the reference value, and a predetermined corresponding relationship, and then the luminous intensity of the light-emitting device can be quickly adjusted according to the intensity difference to a moderate user perception Its strength lies in its fast adjustment speed.

[0172] Of course, the device may execute at predetermined time intervals, for example, obtain the EEG information every 1 minute, and adjust the EEG information according to the power ratio of the EEG information of the predetermined frequency band and the comparison result of the reference value. The luminous intensity of the luminaire. However, this adjustment method may lead to higher energy consumption and is not very necessary.

[0173] Therefore, in one embodiment, the obtaining module 510 is configured to obtain the brain electrical information in response to the user starting to watch the display content of the light-emitting device, and/or the type of the display content is changed.

[0174] That is, when the user starts to watch the display content of the light-emitting device, and/or when the type of the display content is changed, the execution of the method is triggered. Therefore, the frequency of execution of the method can be reduced, and energy consumption can be reduced. Wherein, the type of the displayed content may include: text, image, and other content.

[0175] In addition, the user's eye movements such as blinking may cause noise to the EEG information. Therefore, in an embodiment, see Figure 8 , The device 500 further includes:

[0176] An extraction module 550, configured to extract target EEG information corresponding to the target eye movement type from the EEG information;

[0177] The power percentage determining module 520 is configured to determine the power percentage of the EEG information of the predetermined frequency band in the target EEG information.

[0178] Those skilled in the art understand that the eye movements of human eyes can be roughly divided into three types: horizontal saccade, fixation and blinking. Blinking generally causes noise, so the target eye movement type can be, for example, horizontal saccade or fixation.

[0179] In the power percentage determining module 520, the power percentage of the EEG information of the predetermined frequency band may be determined according to the target EEG information. That is to say, in this embodiment, the essence is to select some specific EEG information from the initially obtained EEG information, and then calculate the power ratio of the EEG information in the predetermined frequency band according to the specific EEG information, so that Improve the execution accuracy of the method.

[0180] An application scenario of the light intensity adjustment method and device described in the embodiments of the application may be as follows: the user wears a smart helmet to play a game. After loading the game interface, the brightness of the display is a little high, and the user feels a little dazzling. The EEG sensor collects the EEG information corresponding to the user’s eyes, calculates the power percentage of the EEG information at 5-9 Hz based on the collected EEG information, and compares the power percentage with a reference value to identify the current power percentage. The ratio is lower than the reference value, so the smart helmet is controlled to lower the display brightness.

[0181] The hardware structure of a user equipment in an embodiment of the application is as Picture 9 Shown. The specific embodiments of this application do not limit the specific implementation of the user equipment, see Picture 9 , The device 900 may include:

[0182] A processor (processor) 910, a communications interface (Communications Interface) 920, a memory (memory) 930, and a communication bus 940. among them:

[0183] The processor 910, the communication interface 920, and the memory 930 communicate with each other through the communication bus 940.

[0184] The communication interface 920 is used to communicate with other network elements.

[0185] The processor 910 is configured to execute the program 932, and specifically can execute the above figure 1 The relevant steps in the method embodiment shown.

[0186] Specifically, the program 932 may include program code, and the program code includes computer operation instructions.

[0187] The processor 910 may be a central processing unit CPU, or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0188] The memory 930 is used to store the program 932. The memory 930 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), for example, at least one disk memory. The program 932 can specifically perform the following steps:

[0189] Obtaining EEG information corresponding to at least one eye of the user;

[0190] Determining the power ratio of the EEG information in the predetermined frequency band in the EEG information;

[0191] The luminous intensity of a light-emitting device is adjusted at least according to the power ratio and a reference value.

[0192] For the specific implementation of the steps in the program 932, reference may be made to the corresponding steps or modules in the above-mentioned embodiments, which will not be repeated here. Those skilled in the art can clearly understand that, for convenience and concise description, the specific working process of the devices and modules described above can be referred to the corresponding process description in the foregoing method embodiment, which will not be repeated here.

[0193] A person of ordinary skill in the art may realize that the units and method steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

[0194] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a controller, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program code .

[0195] The above implementations are only used to illustrate the application, not to limit the application. Those of ordinary skill in the relevant technical fields can also make various changes and modifications without departing from the spirit and scope of the application. Therefore, all The equivalent technical solutions also belong to the scope of this application, and the scope of patent protection of this application should be defined by the claims.