CN113885225A - A kind of shading device and shading degree adjustment method - Google Patents
A kind of shading device and shading degree adjustment method Download PDFInfo
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- CN113885225A CN113885225A CN202010631340.XA CN202010631340A CN113885225A CN 113885225 A CN113885225 A CN 113885225A CN 202010631340 A CN202010631340 A CN 202010631340A CN 113885225 A CN113885225 A CN 113885225A
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- G02C7/101—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having an electro-optical light valve
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/113—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining or recording eye movement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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Abstract
The invention discloses a shading device and a shading degree adjusting method.A triggering signal generating component generates a corresponding triggering signal based on the biological characteristics of a user or after a specific equipment state appears; then when the controller detects the trigger signal, the controller generates a corresponding control instruction according to the trigger signal; the liquid crystal driving assembly controls the liquid crystal unit of the shielding component based on the liquid crystal according to the control instruction so as to adjust the shading degree of the shielding component based on the liquid crystal, thus the shading degree of the shading device can be automatically adjusted, manual adjustment of a user is not needed, and the use of the user is facilitated.
Description
Technical Field
The invention relates to the field of shading equipment, in particular to a shading device and a shading degree adjusting method.
Background
Eyes are important photosensitive organs, and excessive ambient light can cause physiological discomfort of human eyes, so the shading products are produced at the same time. Most of the existing shading products adopt a complete shading mode, so that under the condition of dark light, the visibility is reduced, and a user cannot see the external environment clearly; and the small part needs to adjust the shading degree manually by the user, so that the use is inconvenient for the user.
Disclosure of Invention
The invention aims to provide a shading device and a shading degree adjusting method, which aim to solve the problems that the existing shading products adopt a complete shading mode, so that the visibility is reduced under the condition of dark light, and a user cannot see the external environment clearly; or the shading degree needs to be adjusted manually by the user, which causes the problem of inconvenient use of the user.
In a first aspect, according to an embodiment of the present invention, there is provided a shade apparatus including:
a liquid crystal-based shielding member;
a trigger signal generating component for generating a corresponding trigger signal based on the biological characteristics of the user or after a specific device state appears;
the controller is used for generating a corresponding control instruction according to the trigger signal when the trigger signal is detected;
and the liquid crystal driving assembly is used for controlling the liquid crystal unit of the shielding component based on the liquid crystal according to the control instruction so as to adjust the light shading degree of the shielding component based on the liquid crystal.
Specifically, the biological feature is a head bioelectric signal or an eye posture signal, the trigger signal generating component is a head bioelectric signal collecting component or an eye detector, and the head bioelectric signal collecting component or the eye detector is specifically configured to generate a corresponding trigger signal according to the head bioelectric signal.
Specifically, the head bioelectric signal component is an electromyographic signal collector, the head bioelectric signal is an eye electromyographic signal collected by the electromyographic signal collector, the electromyographic signal collector is specifically configured to filter and extract the electromyographic signal to obtain eye characteristic data, the eye state is determined according to the eye characteristic data of the user, if the eye state is an open eye state, a trigger signal for reducing the light shielding degree is generated, and if the eye state is a closed eye state, a trigger signal for improving the light shielding degree is generated.
Specifically, the trigger signal generating component is an eyeball detector, the biological feature is an eye posture signal, and the eyeball detector is specifically configured to extract the eye posture signal to obtain eye movement condition data and eyelid covering eyeball proportion data, determine an eye state according to the eye movement condition data of the user and the eyelid covering eyeball proportion data, generate a trigger signal for reducing the light shielding degree if the eye state is an open eye state, and generate a trigger signal for improving the light shielding degree if the eye state is a closed eye state.
Specifically, the head bioelectric signal acquisition part is a brain wave signal acquisition part, and the head bioelectric signal is a brain wave signal acquired by the brain wave signal acquisition part; the brain wave signal acquisition component is specifically used for extracting feature data of the brain wave signal and generating a corresponding trigger signal according to the feature data.
Specifically, the trigger signal generating component is an equipment state acquiring device, and the equipment state acquiring device is specifically configured to generate a corresponding trigger signal after a specific equipment state occurs.
Specifically, the liquid crystal-based shielding component is at least one, and the liquid crystal driving assembly is connected with the liquid crystal-based shielding component.
In a second aspect, according to an embodiment of the present invention, there is provided a shading degree adjusting method of a shading device, including:
the trigger signal generation component generates a corresponding trigger signal based on the biological characteristics of the user or after a specific equipment state appears;
when the controller detects the trigger signal, the controller generates a corresponding control instruction according to the trigger signal;
and the liquid crystal driving component controls the liquid crystal unit of the liquid crystal-based shielding component according to the control instruction so as to adjust the light shading degree of the liquid crystal-based shielding component.
Specifically, the biometric feature is a head bioelectric signal or an eye posture signal, the trigger signal generating component is a head bioelectric signal collecting component or an eyeball detector, and the trigger signal generating component generates a corresponding trigger signal based on the biometric feature of the user, including: and the head bioelectrical signal acquisition component or the eyeball detector generates a corresponding trigger signal according to the head bioelectrical signal or the eye posture signal.
Specifically, the trigger signal generating component is an equipment state acquiring device; the trigger signal generating component generates a corresponding trigger signal after a specific device state appears, and the trigger signal generating component comprises: and the equipment state acquisition device generates a corresponding trigger signal after a specific equipment state appears.
The embodiment of the invention provides a shading device and a shading degree adjusting method, wherein a triggering signal generating component generates a corresponding triggering signal based on the biological characteristics of a user or after a specific equipment state appears; then when the controller detects the trigger signal, the controller generates a corresponding control instruction according to the trigger signal; the liquid crystal driving assembly controls the liquid crystal unit of the shielding component based on the liquid crystal according to the control instruction so as to adjust the shading degree of the shielding component based on the liquid crystal, thus the shading degree of the shading device can be automatically adjusted, manual adjustment of a user is not needed, and the use of the user is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a structural diagram of a light shielding device according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for adjusting a shading degree of a shading device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a first aspect, according to an embodiment of the present invention, as shown in fig. 1, there is provided a shade apparatus including: a liquid crystal-based shielding member 1; a trigger signal generating component 3, for generating a corresponding trigger signal based on the biological characteristics of the user or after a specific device state appears; the controller 4 is used for generating a corresponding control instruction according to the trigger signal when the trigger signal is detected; and the liquid crystal driving assembly 2 is used for controlling the liquid crystal unit of the liquid crystal-based shielding component 1 according to the control instruction so as to adjust the light shading degree of the liquid crystal-based shielding component 1.
The liquid crystal-based shielding member 1 may be a liquid crystal array having liquid crystal cells, and the liquid crystal driving assembly 2 may control the liquid crystal-based shielding member 1 according to a control command to adjust a light shielding degree thereof. Wherein, one mode that liquid crystal drive assembly 2 control shelters from part 1 based on liquid crystal is for changing indiscriminate light transmissivity, and liquid crystal drive assembly 2 adjusts electric field intensity according to control command to make the liquid crystal unit take place to deflect and influence the transmissivity of light, in order to reach the purpose of adjusting the shading degree, the deflection direction of liquid crystal unit is not restricted, can be clockwise, can anticlockwise, also can be other modes. In another implementation mode, the liquid crystal driving assembly 2 adjusts the electric field strength according to the control instruction, so as to adjust the chromatic light transmittance of the liquid crystal unit to affect the transmittance of light, thereby achieving the purpose of adjusting the shading degree. Of course, other control methods may be adopted, and this embodiment is not strictly limited.
The shape of the liquid crystal-based light shielding member 1 is set according to actual requirements, and may be square, circular, or elliptical, and the like, and this embodiment is not limited strictly.
In the light shielding device provided by the embodiment, firstly, the trigger signal generating part 3 generates a corresponding trigger signal based on the biological characteristics of a user or after a specific device state appears; then when the controller 4 detects the trigger signal, the controller 4 generates a corresponding control instruction according to the trigger signal; the liquid crystal driving assembly 2 controls the liquid crystal unit of the shielding component 1 based on the liquid crystal according to the control instruction so as to adjust the shading degree of the shielding component 1 based on the liquid crystal, thus the shading degree of the shading device can be automatically adjusted, manual adjustment of a user is not needed, and the use by the user is facilitated.
In an embodiment, the biological feature is a head bioelectric signal or an eye posture signal, the trigger signal generating component 3 is a head bioelectric signal acquiring component or an eye detector, and the head bioelectric signal acquiring component or the eye detector is specifically configured to generate a corresponding trigger signal according to the head bioelectric signal or the eye posture signal.
In a possible implementation manner, the head bioelectric signal collecting component is an electromyographic signal collector, the head bioelectric signal is an eye electromyographic signal collected by the electromyographic signal collector, the electromyographic signal collector is specifically configured to filter and extract the electromyographic signal to obtain eye feature data, the eye state is determined according to the eye feature data, if the eye state is an open eye state, a trigger signal for reducing the light shielding degree is generated, and if the eye state is a closed eye state, a trigger signal for improving the light shielding degree is generated.
The electromyographic signal collector collects an analog signal of the potential difference generated by eye movement along with time by using the electrodes, and performs analog-to-digital conversion on the obtained analog signal through the analog-to-digital conversion channel to obtain a digital signal, namely the collected electromyographic signal.
In the implementation mode, an electromyographic signal is filtered and extracted through an electromyographic signal collector to obtain eye characteristic data, and then the extracted eye characteristic data is matched with preset eye characteristic data, wherein the preset eye characteristic data comprises eye characteristic data in an eye opening state and eye characteristic data in an eye closing state, so that the eye state is determined, namely if the preset eye characteristic data matched with the extracted eye characteristic data is the eye characteristic data in the eye opening state, the eye state is determined to be in the eye opening state; if the preset eye feature data matched with the extracted eye feature data is the eye feature data in the eye closing state, the eye state is determined to be in the eye closing state, then when the controller 4 detects the trigger signal for reducing the light shielding degree, a control instruction for reducing the light shielding degree is generated, and the liquid crystal driving assembly 2 reduces the light shielding degree of the light shielding component 1 based on the control instruction for reducing the light shielding degree. If the eye state is the closed eye state, a trigger signal for increasing the light shielding degree is generated, and then when the controller 4 detects the trigger signal for increasing the light shielding degree, a control command for increasing the light shielding degree is generated, and the liquid crystal driving unit 2 increases the light shielding degree of the light shielding member 1 based on the control command for increasing the light shielding degree. The user can set the threshold value of the shading degree, namely the maximum value and the minimum value of the shading degree according to the requirement of the user, and the larger the shading degree is, the smaller the light transmission is; the smaller the light shielding degree, the greater the transmittance. In this way, the liquid crystal driving assembly 2 can control the light shielding degree of the light shielding member 1 based on the liquid crystal to reach the threshold value so as to meet the light shielding requirements of different users.
In another possible implementation manner, the trigger signal generating component is an eyeball detector, the biological feature is an eye posture signal, the eyeball detector is specifically configured to extract the eye posture signal to obtain eyeball movement condition data and eyelid coverage ratio data, determine an eye state according to the eyeball movement condition data and the eyelid coverage ratio data, generate a trigger signal that reduces a light-shielding degree if the eye state is an open eye state, and generate a trigger signal that improves the light-shielding degree if the eye state is a closed eye state.
In the implementation mode, the eyeball detector can be used for determining the current eyeball movement state data of the user and the proportion data of the eyelid covering the eyeball, then the current eyeball movement state data of the user is matched with the preset eyeball movement state data, wherein the eyeball movement state data comprises eyeball rotation data and eyeball non-rotation data, and the proportion data of the current eyelid covering the eyeball of the user is compared with a preset proportion threshold value, so that the eye state is determined, namely if the preset eyeball movement state data matched with the current eyeball movement state data of the user is the eyeball rotation data, and the proportion data of the current eyelid covering the eyeball of the user is larger than or equal to the preset proportion threshold value, the eye state is determined to be the eye closing state; if the preset eyeball movement condition data matched with the current eyeball movement condition data of the user is eyeball rotation data and the proportion data of the current eyelid covering eyeballs of the user is smaller than a preset proportion threshold value, determining that the eye state is an eye opening state; if the preset eyeball movement condition data matched with the current eyeball movement condition data of the user is eyeball non-rotation data and the proportion data of the eyeball covered by the current eyelid of the user is smaller than a preset proportion threshold value, determining that the eye state is a closed eye state; if the preset eye movement condition data matched with the current eye movement condition data of the user is the non-rotation data of the eyes and the proportion data of the eye covered by the current eyelid of the user is greater than or equal to the preset proportion threshold value, the eye state is determined to be the eye opening state, then when the controller 4 detects the trigger signal for reducing the shading degree, a control instruction for reducing the shading degree is generated, and the liquid crystal driving assembly 2 reduces the shading degree of the shading component 1 based on the liquid crystal according to the control instruction for reducing the shading degree. If the eye state is the closed eye state, a trigger signal for increasing the light shielding degree is generated, and then when the controller 4 detects the trigger signal for increasing the light shielding degree, a control command for increasing the light shielding degree is generated, and the liquid crystal driving unit 2 increases the light shielding degree of the light shielding member 1 based on the control command for increasing the light shielding degree. The user can set the threshold value of the shading degree, namely the maximum value and the minimum value of the shading degree according to the requirement of the user, and the larger the shading degree is, the smaller the light transmission is; the smaller the light shielding degree, the greater the transmittance. In this way, the liquid crystal driving assembly 2 can control the light shielding degree of the light shielding member 1 based on the liquid crystal to reach the threshold value so as to meet the light shielding requirements of different users.
The two implementation modes determine that the eyes are in an eye opening state or an eye closing state according to the eye feature data of the user, and then adjust the shading degree of the shading component 1 based on the liquid crystal according to the state of the eyes, so that the aim of automatically adapting the shading degree to the eye state can be fulfilled, the requirements of different eye states on the shading degree can be met, and the automatic adjustment of the shading degree is realized.
In still another implementation, the head bioelectric signal collecting means is a brain wave signal collecting means, and the head bioelectric signal is a brain wave signal collected by the brain wave collecting means; the brain wave signal acquisition component is specifically used for extracting feature data of brain wave signals and generating corresponding trigger signals according to the feature data.
When a human body user has different control requirements, the human body can send out brain waves with different frequencies, the brain wave signal acquisition component can acquire brain wave signals of the user in real time, then characteristic data, namely frequency domain characteristic data and time domain characteristic data, are extracted from the brain wave signals, whether the frequency domain characteristic data and the time domain characteristic data are in preset frequency bands is judged, the preset frequency bands comprise a frequency band for reducing the shading degree and a frequency band for improving the shading degree, if the frequency characteristic data and the time domain characteristic data are in the frequency band for reducing the shading degree, signals for reducing the shading degree are generated, then when the controller 4 detects a trigger signal for reducing the shading degree, a control instruction for reducing the shading degree is generated, and the liquid crystal driving component 2 reduces the shading degree of the shading component 1 based on the liquid crystal according to the control instruction for reducing the shading degree. If the frequency domain characteristic data and the time domain characteristic data are in the frequency band for increasing the light shielding degree, a trigger signal for increasing the light shielding degree is generated, then when the controller 4 detects the trigger signal for increasing the light shielding degree, a control instruction for increasing the light shielding degree is generated, and then the liquid crystal driving assembly 2 increases the light shielding degree of the light shielding member 1 based on the control instruction for increasing the light shielding degree. The user can set the threshold value of the shading degree, namely the maximum value and the minimum value of the shading degree according to the requirement of the user, and the larger the shading degree is, the smaller the light transmission is; the smaller the light shielding degree, the greater the transmittance. In this way, the liquid crystal driving assembly 2 can control the light shielding degree of the light shielding member 1 based on the liquid crystal to reach the threshold value so as to meet the light shielding requirements of different users.
In the implementation mode, the brain wave signal is used for controlling the shading degree of the shading component, so that the limitation of eye movement can be broken through, the shading degree can be automatically reduced even in the eye opening state, the flexibility of automatically adjusting the shading degree is improved, and the requirements of users can be met.
In another embodiment, the trigger signal generating component 3 is a device state acquiring device, and the device state acquiring device is specifically configured to generate a corresponding trigger signal after a specific device state occurs.
The user may set a specific device state through a setting button on the device state obtaining apparatus, or may send a setting instruction of the specific device state through a terminal device (such as a mobile phone or a tablet computer), and the setting instruction is sent to the device state obtaining apparatus by a wireless network to complete the setting.
The specific device status includes, but is not limited to, setting a preset time period and setting an action signal generated after the preset time period, and the device status acquiring means may be, but is not limited to, a timer. Taking a specific device status as a preset time period and a corresponding action signal, taking the device status acquiring device as a timer as an example, the preset time period may be one, for example, the preset time period is 5 minutes, and the corresponding action signal is an action signal for reducing the light shielding degree, so that after the timer is 5 minutes, the action signal for reducing the light shielding degree appears, and accordingly a trigger signal for reducing the light shielding degree is generated, and then when the controller 4 detects the trigger signal for reducing the light shielding degree, a control instruction for reducing the light shielding degree is generated, and the liquid crystal driving assembly 2 reduces the light shielding degree of the liquid crystal-based light shielding member 1 according to the control instruction for reducing the light shielding degree. Certainly, the preset time interval may be two or more than two, for example, the first preset time interval is 3 minutes, the corresponding action signal is an action signal for reducing the light shielding degree, the second preset time interval is 4 minutes, and the corresponding action signal is an action signal for increasing the light shielding degree, so that the action signal for reducing the light shielding degree appears after the timer is 3 minutes, the trigger signal for reducing the light shielding degree is correspondingly generated, then the controller 4 generates a control instruction for reducing the light shielding degree when detecting the trigger signal for reducing the light shielding degree, and the liquid crystal driving assembly 2 reduces the light shielding degree of the light shielding member 1 based on the control instruction for reducing the light shielding degree; then, after 4 minutes, an operation signal for increasing the light shielding degree appears, a trigger signal for increasing the light shielding degree is generated accordingly, a trigger signal for increasing the light shielding degree is generated, then, when the controller 4 detects the trigger signal for increasing the light shielding degree, a control command for increasing the light shielding degree is generated, and the liquid crystal driving assembly 2 increases the light shielding degree of the light shielding member 1 based on the control command for increasing the light shielding degree.
The device state acquisition device is used for controlling the shading degree of the shading part, so that the limitation of eye movement can be broken through, the shading degree can be automatically reduced no matter in an eye opening state or an eye closing state, the flexibility of automatically adjusting the shading degree is improved, and the requirements of users can be met.
In the above embodiment, the liquid crystal-based shutter member 1 is at least one, and the liquid crystal driving unit 2 is connected to the liquid crystal-based shutter member 1.
The shielding device of the present embodiment can be applied to a shielding eye mask, and the two liquid crystal-based shielding members 1 are respectively used as shielding lenses covering the eyes. The liquid crystal driving assembly 2 is arranged between the two shielding parts 1 based on liquid crystal, so that the liquid crystal driving assembly 2 can be used as a connecting piece of the two shielding parts, the connecting piece does not need to be additionally arranged, the number of parts is reduced, and the structure is more compact. The trigger signal generating part 3 is located inside the liquid crystal based shielding part 1, which facilitates the acquisition of the biometric features of the user.
In a second aspect, according to an embodiment of the present invention, as shown in fig. 2, there is provided a shading degree adjusting method of a shading device, including:
step 201: the trigger signal generation means 3 generates a corresponding trigger signal based on a biometric characteristic of the user or upon the occurrence of a particular device state.
Step 202: when the controller 4 detects the trigger signal, the controller 4 generates a corresponding control instruction according to the trigger signal.
Step 203: the liquid crystal driving assembly 2 controls the liquid crystal cell of the liquid crystal-based shielding member 1 according to the control instruction to adjust the degree of light shielding of the liquid crystal-based shielding member 1.
In an embodiment, for the refinement and extension of the above embodiments, the biometric characteristic is a head bioelectric signal or an eye posture signal, the trigger signal generating component is a head bioelectric signal acquiring component or an eye finder, and step 201 includes: and the head bioelectrical signal acquisition component or the eyeball detector generates a corresponding trigger signal according to the head bioelectrical signal or the eye posture signal.
In a possible implementation manner, the head bioelectric signal collecting component is an electromyographic signal collector, and the head bioelectric signal is an eye electromyographic signal collected by the electromyographic signal collector, and the steps of the above embodiment specifically include: the electromyographic signal collector filters and extracts the electromyographic signals to obtain eye characteristic data, the eye state is judged according to the eye characteristic data, if the eye state is open, a trigger signal for reducing the shading degree is generated, and if the eye state is closed, a trigger signal for improving the shading degree is generated.
In another possible implementation manner, the trigger signal generating component is an eye finder, and the biological feature is an eye posture signal, and the steps of the above embodiment specifically include: the eyeball detector extracts the eye posture signal to obtain eyeball movement condition data and eyelid covering eyeball proportion data, the eye state is judged according to the eyeball movement condition data and the eyelid covering eyeball proportion data, if the eye state is an open eye state, a trigger signal for reducing the shading degree is generated, and if the eye state is a closed eye state, a trigger signal for improving the shading degree is generated.
In yet another possible implementation manner, the head bioelectric signal collecting means is a brain wave signal collecting means, and the head bioelectric signal is a brain wave signal collected by the brain wave collecting section; the brain wave signal acquisition component is specifically used for extracting feature data of brain wave signals and generating corresponding trigger signals according to the feature data.
In another embodiment, for the refinement and extension of the above embodiment, the trigger signal generating component 3 is a device state acquiring apparatus, and step 201 includes: the device state acquisition device generates a corresponding trigger signal after a specific device state appears.
It should be noted that, the descriptions of the steps in the method provided in the foregoing embodiment may refer to the corresponding descriptions in the embodiment of the shielding apparatus, and are not repeated herein.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
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| CN109716411A (en) * | 2016-09-08 | 2019-05-03 | 福特汽车公司 | Method and apparatus to monitor the activity level of driver |
| CN107505745A (en) * | 2017-09-21 | 2017-12-22 | 钱月珍 | Electronics eyeshade |
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