CN105459865B - A kind of vehicle-mounted heel row that there is intelligence to adjust display function headrest and implementation method - Google Patents

Abstract

The present invention discloses a kind of vehicle-mounted heel row that there is intelligence to adjust display function headrest and implementation method, vehicle-mounted heel row is rested the head on, and it includes heel row head rest body, ARM processing system modules in heel row head rest body, microprocessor unit, display panel module unit, brightness impression unit are arranged on, the brightness impression unit, microprocessor unit, ARM processing system modules, display panel module unit are sequentially connected.Brightness impression unit is provided in the vehicle-mounted heel row head restraint systems of the present invention, ambient brightness is detected according to brightness impression unit, and realizes that intelligence adjusts screen intensity.

Description

A vehicle rear headrest with intelligent adjustment and display function and its realization method

technical field

The invention relates to the field of vehicle electronics, in particular to a vehicle rear headrest with an intelligent adjustment and display function and a realization method.

Background technique

With the continuous improvement of social living standards and the continuous improvement of scientific and technological levels, people have more and more electronic devices around them, and various computers, mobile phones, and car entertainment systems have entered people's life circles. Do not turn on these electronic products; and the myopia of human eyes has increased significantly. One of the biggest reasons is the long-term excessive use of electronic device screen radiation, which causes eye discomfort, myopia and other damage.

At present, most of the rear headrest devices in the car are manually set to adjust the brightness. Few people will adjust the brightness during use. There are also some low-end headrest products whose screen brightness is directly fixed and cannot be adjusted. These details are easy. Ignored by users, it is easy to cause eye fatigue and cause myopia and other problems.

Therefore, the prior art still needs to be improved and developed.

Contents of the invention

In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a vehicle rear headrest with an intelligent adjustment display function and its implementation method, aiming to solve the problem that the screen brightness of the existing vehicle rear headrest cannot be automatically adjusted.

Technical scheme of the present invention is as follows:

A vehicle-mounted rear headrest with intelligent adjustment and display function, which includes a rear headrest body, an ARM processing system module, a microprocessor unit, a display screen module unit, and a brightness sensing unit arranged on the rear headrest body. The brightness sensing unit, the microprocessor unit, the ARM processing system module, and the display module unit are connected in sequence.

In the vehicle-mounted rear headrest with intelligent adjustment and display function, the microprocessor unit is connected to the display screen module unit through a display backlight drive unit.

The vehicle-mounted rear headrest with intelligent adjustment and display function, wherein the display screen module unit includes a display screen, and the brightness sensing unit is arranged on the display screen.

In the vehicle-mounted rear headrest with intelligent adjustment and display function, the position of the brightness sensing unit on the display screen is set as a transparent material.

The vehicle-mounted rear headrest with intelligent adjustment and display function, wherein, the ARM processing system module is provided with a CPU module, and an Audio processing module, a power adapter module, and a DDR module connected to the CPU module storage module.

A method for realizing a vehicle-mounted rear headrest with an intelligent adjustment and display function as described above, comprising the steps of:

The brightness sensing unit samples the current ambient brightness from time to time and outputs the AD value, and the sampled AD value is sent to the microprocessor unit, and the microprocessor unit performs calculation comparison with the preset environment value, and sends the calculation comparison result to ARM for processing The system module executes the corresponding adjustment screen parameter value task through the ARM processing system module.

The implementation method, wherein, the microprocessor unit is connected to the display module unit through a display backlight drive unit, and the microprocessor unit outputs a PWM pulse width signal to the display backlight drive unit, through the The display backlight driving unit controls the display brightness of the display module unit.

In the implementation method described above, the display screen module unit includes a display screen, and the brightness sensing unit is arranged on the display screen.

In the implementation method described above, the position of the brightness sensing unit on the display screen is set as a transparent material.

The implementation method, wherein, the microprocessor unit communicates with the ARM processing system module through a serial port.

Beneficial effects: the vehicle-mounted rear headrest system of the present invention is provided with a brightness sensing unit, which detects ambient brightness according to the brightness sensing unit, and realizes intelligent adjustment of screen brightness.

Description of drawings

FIG. 1 is a schematic structural view of a preferred embodiment of a vehicle rear headrest with intelligent adjustment and display functions according to the present invention.

Detailed ways

The present invention provides a vehicle-mounted rear headrest with intelligent adjustment and display function and its implementation method. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Please refer to Fig. 1. Fig. 1 is a structural schematic diagram of a preferred embodiment of a vehicle-mounted rear headrest with intelligent adjustment and display function according to the present invention. As shown in the figure, it includes a rear headrest body, and The ARM processing system module 20, the microprocessor unit 30, the display module unit 10, and the brightness sensing unit 40 are sequentially connected to each other.

The microprocessor unit 30 is connected to the display screen module unit 10 through a display backlight driving unit 50 .

The display screen module unit 10 includes a display screen, and the brightness sensing unit 40 is disposed on the display screen.

The position of the brightness sensing unit 40 on the display screen is set as a transparent material.

The brightness sensing unit 40 is provided with a light sensor, and the light sensor can be selected as MAX44009 model, which is an analog/digital output device, can work in the power supply voltage range of 3.0V to 3.6V, and the working frequency is 10~100kHz , the temperature range of 0~70℃, it can work well under various brightness. The light sensor has a signal converter (such as a photodiode or a Cds photoresistor) for converting optical signals into electrical signals, a signal amplification and adjustment device, and an analog-to-digital converter (ADC), which can convert all signal amplification and adjustment devices and The analog-to-digital converter is integrated in a small package, such as 2mm×2mm (UTDFN package). The photodiode is a discrete photodiode that includes one or more operational amplifiers: one for current-to-voltage conversion and possibly a second stage for additional gain. The photodiode also includes a branch circuit for power supply, ensuring a highly reliable signal chain. In order to reduce the interference of infrared rays, the light sensor can use two photodiodes, one adopts an element sensitive to visible light and infrared light, and the other adopts an element only sensitive to infrared light, and finally subtracts it from the response value of the former The latter response value minimizes the influence of infrared light and results in an accurate visible light response.

The brightness sensing unit 40 is installed on the display screen (such as the panel of the display screen), which is the best position for ambient brightness sampling, and the panel at the position of the brightness sensing unit 40 is a transparent material, which ensures that the ambient brightness will not be affected by any The shading and attenuation of the brightness sensing unit 40 will not affect the light around the brightness sensing unit 40, which is consistent with the actual ambient brightness, ensuring the accuracy of the brightness sensing unit 40 sampling the ambient brightness. In order to better reflect the humanization and meet the usage habits and needs of different people, the system is designed with optional adjustment methods. If you choose intelligent adjustment, the system will automatically close the manual setting. If you choose to close the intelligent adjustment, the system will automatically open the manual setting to provide users with Manual adjustment, the system defaults to intelligent adjustment.

The system turns on the intelligent adjustment function by default (that is, the brightness sensing unit 40). The brightness sensing unit 40 samples the current ambient brightness from time to time and outputs an AD value. The sampled AD value is sent to the microprocessor unit 30, and the microprocessor unit 30 Perform calculation comparison with the preset current environment value, send the calculation comparison result to the ARM processing system module 20 , and execute the corresponding task of adjusting the screen parameter value through the ARM processing system module 20 .

Specifically, the microprocessor unit 30 outputs a PWM pulse width signal to the display backlight drive unit 50, and the PWM pulse width signal can adjust the current output from the display backlight drive unit 50 to the display screen module unit 10 to control the display screen. Brightness, to realize the intelligent adjustment of the brightness of the display screen.

The other way of the microprocessor unit 30 communicates with the ARM processing system module 20 through the serial port mode to realize the alternation of information. Execute the corresponding task of adjusting screen parameters, specifically the ARM processing system module 20 adjusts the video RGB three-primary color signals of each functional state, and outputs the adjusted video RGB three-primary color signals to the display screen module unit for image display, so that the image The display becomes soft, etc., reducing eye fatigue. Through the vehicle-mounted rear row head of the present invention, it can be judged whether it is daytime, cloudy or night, so as to intelligently adjust the brightness and color temperature of the display screen of the system and reduce visual fatigue.

For example, the ambient brightness is divided into multiple levels in advance, such as five levels from low to high: the first level, the second level, the third level, the fourth level, and the fifth level (the five levels are all ranges) , the five levels correspond to different brightness and color temperature of the display screen. When it is detected that the current ambient brightness belongs to a certain level, it controls to adjust the display screen to the corresponding brightness and color temperature. For example, the brightness range of the display screen is from 0 to 100, then when the current environment brightness belongs to the first level, the display brightness is adjusted to 20, if the current environment brightness belongs to the second level, the display brightness is adjusted to 40, if the current When the environment brightness belongs to the third level, the display brightness is adjusted to 60; if the current environment brightness belongs to the fourth level, the display brightness is adjusted to 80; if the current environment brightness belongs to the fifth level, the display brightness is adjusted to 100. Correspondingly, the color temperature is also adjusted according to the above method. The first level corresponds to a color temperature of 3500K, the second level corresponds to a color temperature of 5000K, the third level corresponds to a color temperature of 6500K, the fourth level corresponds to a color temperature of 8000K, and the fifth level corresponds to a color temperature of 9500K.

The ARM processing system module 20 is provided with a CPU module, which is connected to the Audio processing module, power adapter module, DDR storage module, Video&RGB processing module, etc. of the CPU module. The ARM processing system module 10 may specifically be an ARM10E processor, which adopts a memory structure in which instructions and data are separated, with a 32×16MAC inside and an SDP coprocessor interface, and the VFP10 (vector floating point unit) is seven levels Pipeline structure, the system clock is 300MHz clock. The display screen module 10 includes at least one display screen, and the display screen can adopt a capacitive touch screen, and the size of the display screen can be integrally adapted to the rear headrests, and should not exceed the size of the rear headrests. For example, if two display screens are set, the size of the two display screens can be 7-14 inches, such as 10 inches.

Based on the above system, the present invention also provides a method for realizing the vehicle-mounted rear headrest with intelligent adjustment and display function as described above, which includes the steps of:

The brightness sensing unit samples the current ambient brightness from time to time and outputs the AD value, and the sampled AD value is sent to the microprocessor unit, and the microprocessor unit performs calculation comparison with the preset environment value, and sends the calculation comparison result to ARM for processing The system module executes the corresponding adjustment screen parameter value task through the ARM processing system module.

Further, the microprocessor unit is connected to the display screen module unit through a display backlight drive unit, the microprocessor unit outputs a PWM pulse width signal to the display backlight drive unit, and the display is controlled by the display backlight drive unit. Display brightness of the screen module unit.

Further, the display screen module unit includes a display screen, and the brightness sensing unit is arranged on the display screen.

Further, the position of the brightness sensing unit on the display screen is set as a transparent material.

Further, the ARM processing system module is provided with a central processor module, and an Audio processing module, a power adapter module, and a DDR storage module connected to the central processor module.

It should be understood that the application of the present invention is not limited to the above examples, and those skilled in the art can make improvements or transformations according to the above descriptions, and all these improvements and transformations should belong to the protection scope of the appended claims of the present invention.

Claims (6)

1. a kind of vehicle-mounted heel row that there is intelligence to adjust display function headrest, which is characterized in that including heel row head rest body, setting ARM processing system modules, microprocessor unit in heel row head rest body, display panel module unit, brightness impression unit, institute Brightness impression unit, microprocessor unit, ARM processing system modules, display panel module unit is stated to be sequentially connected；

Ambient brightness is divided into five grades by the microprocessor unit in advance, and each grade corresponds to different brightness of display screen respectively And colour temperature, the brightness range of display screen are 0 to 100, the first estate brightness of display screen is adjusted to 20, colour temperature 3500K, the second grade Brightness of display screen is adjusted to 40, and colour temperature 5000K, tertiary gradient brightness of display screen is adjusted to 60, and colour temperature 6500K, the fourth estate is shown Display screen brightness adjustment is 80, and colour temperature 8000K, the 5th grade brightness of display screen is adjusted to 100, colour temperature 9500K；

The display panel module unit includes a display screen, and the brightness impression unit setting is on a display screen；

The position of brightness impression unit is set as transparent material on the display screen；

The brightness impression unit is provided with a light sensor;The light sensor, which has, converts optical signals into telecommunications Number signal adapter, signal amplification regulating device and analog-digital converter；

The light sensor uses two photodiodes, the use element all sensitive to visible ray and infrared light, separately One use is only to the element of infrared photaesthesia；The photodiode further includes branch circuit；The photodiode, packet Include multiple operational amplifiers；

The regulative mode of brightness impression unit is adjusted for intelligence or manual setting, is defaulted as intelligent adjusting；

Microprocessor unit output all the way PWM pulse width signals arrive display backlight driving unit, another way by way of serial ports and Arm processor system module communicates, and operation comparing result is sent to ARM processing system modules, passes through institute by microprocessor unit It states ARM processing system modules and performs to adjust and shield ginseng value task, by ARM processing system modules to the video RGB tri- of each functional status Primary colour signal is adjusted, and the video RGB tristimulus signals after adjustment are output to display panel module unit progress image and are shown Show.

2. the vehicle-mounted heel row that there is intelligence to adjust display function headrest according to claim 1, which is characterized in that described micro- Processor unit connects the display panel module unit by a display backlight driving unit.

3. the vehicle-mounted heel row that there is intelligence to adjust display function headrest according to claim 1, which is characterized in that described A CPU module is equipped in ARM processing system modules and is connected to the Audio processing of the CPU module Module, power adaptation module, DDR memory modules.

4. a kind of implementation method of the vehicle-mounted heel row that there is intelligence to adjust display function headrest as described in claim 1, special Sign is, including step：

Brightness impression unit constantly samples current ambient brightness and exports AD values, and the AD values sampled are transported to micro- place Device unit is managed, operation comparison is carried out by microprocessor unit and default environment value, operation comparing result is sent to ARM processing systems System module passes through the ARM processing system modules and performs corresponding adjusting screen ginseng value task；

Ambient brightness is divided into five grades by the microprocessor unit in advance, and each grade corresponds to different brightness of display screen respectively And colour temperature, the brightness range of display screen are 0 to 100, the first estate brightness of display screen is adjusted to 20, colour temperature 3500K, the second grade Brightness of display screen is adjusted to 40, and colour temperature 5000K, tertiary gradient brightness of display screen is adjusted to 60, and colour temperature 6500K, the fourth estate is shown Display screen brightness adjustment is 80, and colour temperature 8000K, the 5th grade brightness of display screen is adjusted to 100, colour temperature 9500K；

The display panel module unit includes a display screen, and the brightness impression unit setting is on a display screen；

The position of brightness impression unit is set as transparent material on the display screen；

The brightness impression unit is provided with a light sensor;The light sensor, which has, converts optical signals into telecommunications Number signal adapter, signal amplification regulating device and analog-digital converter；

The light sensor uses two photodiodes, the use element all sensitive to visible ray and infrared light, separately One use is only to the element of infrared photaesthesia；The photodiode further includes branch circuit；The photodiode, packet Include multiple operational amplifiers；

The regulative mode of brightness impression unit is adjusted for intelligence or manual setting, is defaulted as intelligent adjusting；

Microprocessor unit output all the way PWM pulse width signals arrive display backlight driving unit, another way by way of serial ports and Arm processor system module communicates, and operation comparing result is sent to ARM processing system modules, passes through institute by microprocessor unit It states ARM processing system modules and performs to adjust and shield ginseng value task, by ARM processing system modules to the video RGB tri- of each functional status Primary colour signal is adjusted, and the video RGB tristimulus signals after adjustment are output to display panel module unit progress image and are shown Show.

5. implementation method according to claim 4, which is characterized in that the microprocessor unit is driven by a display backlight Moving cell connects the display panel module unit, and microprocessor unit output PWM pulse width signals to the display backlight drives Moving cell passes through the display brightness of the display backlight driving unit control display screen modular unit.

6. implementation method according to claim 5, which is characterized in that the microprocessor unit by serial mode with ARM processing system modules are communicated.