The present disclosure relates to the field of display technology, and more particularly to an intelligent light reflection adjusting device, an adjusting method thereof, and an anti-dazzle rearview mirror.
Dazzle refers to a visual condition which may cause visual discomfort and reduce the visibility of objects due to an unfavorable brightness distribution or extreme brightness contrast in space or time in the visual field. The bright feeling which cannot be adapted by human eyes in the visual field may cause people disgusting, uncomfortable or even blind. In the visual field, too high brightness occurs in a local area or brightness changes too fast will result in dazzle, which causing human eyes discomfort, and dazzle is one of the important causes of visual fatigue. Dazzle can be caused by the reflection of outdoor light on the lens or other surfaces, it has a certain impact on the eyes and cause eye discomfort. In driving or outdoor sports, dazzle is very likely to lead to sudden accidents, and thus endanger people's lives and properties.
The embodiment according to the present disclosure provides an intelligent light reflection adjusting device comprising: a light sensing module, a processing module, a power supply module and a light reflection module, wherein,
The light sensing module is used for converting a light signal sensed in a first direction into a first electrical signal, converting a light signal sensed in a second direction into a second electrical signal, and outputting the first electrical signal and the second electrical signal to the processing module;
The processing module is used for matching an absolute value of the difference between the first electric signal and the second electric signal with a plurality of preset sections and outputting a control signal corresponding to the matched preset section to the power supply module;
The power supply module is used for converting the control signal into a power supply signal and outputting the power supply signal to the light reflection module; and
The light reflection module is used for reducing the transmittance of the reflected light signal under control of the power supply signal.
The embodiment according to the present disclosure provides an anti-dazzle rearview mirror comprising the intelligent light reflection adjusting device provided in the embodiment according to the present disclosure.
The embodiment according to the present disclosure provides an adjusting method of the intelligent light reflection adjusting device provided in the embodiment according to the present disclosure, comprising:
Converting a light signal sensed in a first direction into a first electrical signal, converting a light signal sensed in a second direction into a second electrical signal;
Matching an absolute value of the difference between the first electric signal and the second electric signal with a plurality of preset sections and outputting a control signal corresponding to the matched preset section;
Converting the control signal into a power supply signal; and
Reducing the transmittance of the reflected light signal under control of the power supply signal.
Hereinafter, specific embodiments of the intelligent light reflection adjusting device, the adjusting method thereof, and the anti-dazzle rearview mirror will be described in detail with reference to the accompanying drawings.
The embodiment according to the present disclosure provides an intelligent light reflection adjusting device, as shown in
In the intelligent light reflection adjusting device provided by the embodiment according to the present disclosure, a light sensing module converts the light signals sensed in the first direction and the second direction into electrical signals; the processing module calculates the converted electrical signals and matches with the preset sections and determines the corresponding control signal according to the matching result. The power supply module converts the control signal into a power supply signal; and the light reflection module can reduce the transmittance of the reflected light under control of the power supply signal, thereby reducing the intensity of the light entering human eyes and preventing dazzle from causing harm to human beings.
In the implementation, in the intelligent light reflection adjusting device provided by the embodiment according to the present disclosure, the processing module is used for: calculating an absolute value of the difference between the first electrical signal and the second electrical signal; setting a preset threshold, dividing the range from zero to the preset threshold into N preset sections, wherein N is a positive integer; matching the absolute value with the preset sections, determining the preset section corresponding to the absolute value, and outputting a control signal corresponding to the preset section to the power supply module. Specifically, a preset threshold value M is set and 0−M is divided into a plurality of preset sections. When the absolute values of the difference between the electrical signals corresponding to the light signals of the first direction and the second direction in different preset sections, different control signals are determined, and the different control signals are converted into different power supply signals, so that the light reflection module can reduce the transmittance of the reflected light in different degrees under the control of different power supply signals, and can also save energy while avoiding dazzle.
In the implementation, in the intelligent light reflection adjusting device provided by the embodiment according to the present disclosure, the N preset sections are equally divided sections, and the endpoint values of each of the preset sections are In=(M/N)*n, wherein M represents the preset threshold, N indicates the number of preset sections, and n is a positive integer. s shown in
In the implementation, in the intelligent light reflection adjusting device provided by the embodiment according to the present disclosure, the processing module can further be used for: when the first electrical signal and/or the second electrical signal are determined to be greater than the preset threshold, outputting a preset control signal to the power supply module, wherein the preset control signal is used to be converted by the power supply module into a preset power supply signal and outputted to the light reflection module; when the absolute value is determined to be less than the minimum endpoint value, outputting a zero-level control signal to the power supply module, wherein the zero-level control signal is used to turn off the power supply module so that the power supply module does not output a power supply signal to the light reflection module. When the intensities of the light signals in the first direction and the second direction (e.g., the front and the rear of the vehicle during driving) are greater than the preset threshold, that is, one of the light signals sensed in the front and in the rear, or both is greater than the preset threshold, the preset control signal is output to the power supply module, and the power module generates the corresponding preset power supply signal and outputs it to the light reflection module, and controls the light reflection module to turn on the maximum anti-dazzle mode, that is, the transmittance of the reflected light is minimized. When the absolute value of the difference between the electrical signals corresponding to the front and rear light signal intensities is smaller than the minimum endpoint value I1, zero-level control signal is output to the power supply module, then the power supply module will not output power supply signal to the light reflection module, which does not need to adjust the transmittance of reflected light. Thus, energy-saving control of intelligent light reflection adjusting device can be achieved.
In the implementation, in the intelligent light reflection adjusting device provided by the embodiment according to the present disclosure, the control signal outputted by the processing module to the power supply module may be a pulse signal; and the duty ratio of the pulse signal may be obtained by the following formula: Dm=(m/N)*T; where Dm indicates the duty ratio of the pulse signal, T indicates the period of the pulse signal, and m represents the mth preset section. As an example, the general pulse signal is shown in
In addition, as shown in
In the implementation, in the intelligent light reflection adjusting device provided by the embodiment according to the present disclosure, as shown in
In the implementation, in the intelligent light reflection adjusting device provided by the embodiment according to the present disclosure, as shown in
In the implementation, in the intelligent light reflection adjusting device provided by the embodiment according to the present disclosure, as shown in
In the implementation, in the intelligent light reflection adjusting device provided by the embodiment according to the present disclosure, as shown in
Based on the same inventive concept, the embodiment according to the present disclosure provides an anti-dazzle rearview mirror comprising the intelligent light reflection adjusting device provided in the embodiment according to the present disclosure. In particular, the intelligent light reflection adjusting device can be integrated in the rearview mirror of an automobile, and control the reflected light transmittance according to light intensities on the rearview mirror from the car in front and the car in rear (coressponding to the first direction and the second direction), achieving a combination of anti-dazzle and display at the same time, while also saving energy.
Based on the same inventive concept, the embodiment according to the present disclosure provides an adjusting method of the intelligent light reflection adjusting device provided in the embodiment according to the present disclosure, as shown in
In S101, a light signal sensed in a first direction is converted into a first electrical signal, converting a light signal sensed in a second direction into a second electrical signal.
In S102, an absolute value of the difference between the first electric signal and the second electric signal is matched with a plurality of preset sections and outputting a control signal corresponding to the matched preset section.
In S103, the control signal is converted into a power supply signal.
In S104, the transmittance of the reflected light signal is reduced under control of the power supply signal.
In the adjusting method of the intelligent light reflection adjusting device provided in the embodiment according to the present disclosure, by converting the light signals sensed in the first direction and the second direction into electrical signals; calculating the converted electrical signals and matching them with the preset sections; and determining the corresponding control signals according to the matching result, the control signals are converted into power supply signals; and the transmittance of the reflected light is reduced under the control of the power supply signals, thereby reducing the intensity of the light entering human eyes and preventing dazzle from causing harm to human beings. That is, the reflected light transmittance is adjusted according to the strength of the front and rear lights, to achieve a smart anti-dazzle function.
In the implementation, in the adjusting method provided in the embodiment according to the present disclosure, step S102 may include: calculating an absolute value of the difference between the first electrical signal and the second electrical signal; setting a preset threshold, dividing the range from zero to the preset threshold into N preset sections, wherein N is a positive integer; and matching the absolute value with the preset sections, determining the preset section corresponding to the absolute value, and outputting a control signal corresponding to the preset section. In particular, the preset threshold may be divided into a plurality of preset sections, so that according to the different determined preset sections in which the absolute value of the difference between the light signals of the first direction and the second direction is located, corresponding control signal is output. The corresponding control signal generates the corresponding power supply signal, and then the light reflection module can reduce the transmittance of reflected light at different amplitudes in correspondence with the different power supply signals, achieving both the purpose of anti-dazzle and energy saving.
In the implementation, in the adjusting method provided in the embodiment according to the present disclosure, the N preset sections are equally divided sections, and the endpoint values of each of the preset sections are In=(M/N)*n, wherein M represents the preset threshold, N indicates the number of preset sections, and n is a positive integer. 0−M is equally divided into N sections, and the endpoint values of each of the preset sections are In=(M/N)*n, from small to large are I1, I2, I3, I4 . . . In; and the corresponding equally divided sections are the first preset section [I1 I2], the second preset section [I1 I2], the third preset section [I1 I2] . . . and the mth preset section [In−1 In], respectively. The absolute value of the difference between the electrical signals corresponding to the light signals of the first direction and the second direction is calculated as such and the preset section as described above in which the absolute value locates is determined. A preset section corresponds to a control signal, so that the control signal corresponding to the determined preset section is output, and the control signal is converted into a corresponding power supply signal. Then, the transmittance of the reflected light is reduced under the control of the power supply signals, and it can also save energy while avoiding dazzle.
In the implementation, the adjusting method provided in the embodiment according to the present disclosure also may comprise: when the first electrical signal and/or the second electrical signal are determined to be greater than the preset threshold, outputting a preset control signal to the power supply module, wherein the preset control signal is used to be converted by the power supply module into a preset power supply signal and outputted to the light reflection module; when the absolute value is determined to be less than the minimum endpoint value, outputting a zero-level control signal to the power supply module, wherein the zero-level control signal is used to turn off the power supply module so that the power supply module does not output a power supply signal to the light reflection module. When the intensities of the light signals in the first direction and the second direction (e.g., the front and the rear of the vehicle during driving) are greater than the preset threshold, that is, one of the light signals sensed in the front and in the rear, or both is greater than the preset threshold, the preset control signal is output, and the corresponding preset power supply signal is generated in accordance with the preset control signal, then the maximum anti-dazzle mode is turn on, that is, the transmittance of the reflected light is minimized. When the absolute value of the difference between the electrical signals corresponding to the front and rear light signal intensities is smaller than the minimum endpoint value Ii, zero-level control signal is output to the power supply module, which does not need to adjust the transmittance of reflected light. This can achieve energy-saving control of intelligent light reflection adjusting device.
The adjusting process of the intelligent light reflection adjusting device provided in the embodiment according to the present disclosure may be as shown in
In S201, the light signals sensed in a first direction and a second direction are converted into a first electrical signal and a second electrical signal, respectively.
In S202, it is determined whether or not the first electric signal and/or the second electric signal is greater than the preset threshold value. If Yes, then step S203 is executed; otherwise, step S204 is executed.
In S203, the preset control signal is output, and the maximum anti-dazzle mode is turned on.
In S204, it is determed whether or not the absolute value of the difference between the first electric signal and the second electric signal is smaller than the minimum endpoint value. If Yes, the step S205 is executed; otherwise, step S206 is executed.
In S205, zero-level control signal is output, and the anti-dazzle mode is not turned on.
In S206, it is determined a preset section in which the absolute value of the difference between the first electrical signal and the second electrical signal is located and outputting a corresponding control signal in accordance with the determined preset section, and the control signal is converted into a power supply signal and the transmittance of the reflected light is reduced under the control of the power supply signal.
In the implementation, in the adjusting method provided in the embodiment according to the present disclosure, the control signal is a pulse signal; and the duty ratio of the pulse signal is obtained by the following formula: Dm=(m/N)*T; where Dm indicates the duty ratio of the pulse signal, T indicates the period of the pulse signal, and m indicates the mth preset section. Specially, the pulse signal corresponding to the duty ratio is output according to the preset section corresponding to the absolute value of the difference between the electrical signals corresponding to the light signal intensity of the first direction and the second direction, and then the corresponding power supply signal is output under the control of the corresponding pulse signal of the duty ratio. The transmittance of the reflected light can be correspondingly decreased under the control of the power supply signal to achieve anti-dazzle function.
The embodiment according to the present disclosure provides an intelligent light reflection adjusting device, an adjusting method thereof, and an anti-dazzle rearview mirror. The intelligent light reflection adjusting device comprises: a light sensing module, a processing module, a power supply module and a light reflection module, wherein the light sensing module is used for converting a light signal sensed in a first direction into a first electrical signal, converting a light signal sensed in a second direction into a second electrical signal, and outputting the first electrical signal and the second electrical signal to the processing module; the processing module is used for matching an absolute value of the difference between the first electric signal and the second electric signal with a plurality of preset sections and outputting a control signal corresponding to the matched preset section to the power supply module; the power supply module is used for converting the control signal into a power supply signal and outputting to the light reflection module; and the light reflection module is used for reducing the transmittance of the reflected light signal under control of the power supply signal. Such an intelligent light reflection adjusting device converts the light signals sensed in the first direction and the second direction into electrical signals through a light sensing module; calculates the converted electrical signals by the processing module and matches with the preset sections; and determines the corresponding control signal according to the matching result. The power supply module converts the control signal into a power supply signal; and the light reflection module can reduce the transmittance of the reflected light under control of the power supply signal, thereby reducing the intensity of the light entering human eyes and preventing dazzle from hurting human eyes.
It will be apparent to those skilled in the art that various changes and modifications can be made in this disclosure without departing from the spirit and scope of the present disclosure. In this way, the present disclosure is intended to embrace such variations and variations if these modifications and variations of this disclosure are within the scope of the present disclosure and the equivalents thereof.
Number | Date | Country | Kind |
---|---|---|---|
201610483590.7 | Jun 2016 | CN | national |
This application is the 371 application of PCT Application No. PCT/CN2017/083754, filed May 10, 2017, which is based upon and claims priority to Chinese Patent Application No. 201610483590.7, filed Jun. 27, 2016, the entire contents of which are incorporated herein by reference.
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/CN17/83754 | 5/10/2017 | WO | 00 |