CN103519890B - A kind of online laser beautifying freckle removing apparatus control system - Google Patents

Abstract

The invention discloses an online laser beauty and freckle removal instrument control system, which is composed of a processor module, a video input channel, a communication module, a digital input and output module, a sensor sampling channel, an LCD (Liquid Crystal Display) touch screen, and a power supply module. The processor module includes a front-end processor FPGA processor and a back-end processor OMAP138 processor, which is the core of data processing and control of other modules. The video input channel completes the image acquisition after shooting the face. The communication module includes 3 RS485 communication interfaces and 1 Ethernet interface. Digital input and output module (with a PWM wave output channel that controls the duty cycle of the current to control the laser intensity, etc. The sensor sampling channel includes 4 high-precision A/D converters and 4 low-speed A/D converters. LCD touch screen It supports video and image display, and can receive touch sensing. Users can manually set the parameters of the system through the touch screen, and at the same time see the condition of the face receiving beauty treatment from the screen.

Description

An online laser beauty and freckle removal instrument control system

technical field

The invention relates to a control system device of a laser beauty instrument, in particular to a control system of an online laser beauty and freckle removal instrument, which can be applied to medical equipment.

Background technique

Lasers can generate heat on biological tissues, and lasers mainly use the photothermal effect of the interaction between lasers and biological tissues in cosmetic applications. Such as laser skin rejuvenation, laser freckle removal. Lasers are being used more and more in the beauty world. Laser produces high-energy, precisely focused, monochromatic light with certain penetrating power, acts on human tissue and generates high heat locally to achieve the purpose of removing or destroying target tissue. Various pulsed lasers with different wavelengths can treat various diseases. A variety of vascular skin diseases and pigmentation, such as freckles, age spots, telangiectasia, etc., as well as tattoo removal, scar treatment, etc., have achieved good results.

The control system of the traditional laser beauty and freckle removal instrument has a single function and a large volume. It is difficult for some small and medium-sized beauty salons to afford the high price, and it lacks multi-angle video monitoring and the operation interface is not friendly enough.

Contents of the invention

The present invention overcomes the shortcomings of the traditional laser beauty and freckle removal instrument control system, such as single function, bulky size, high price that some small and medium-sized beauty salons are difficult to bear, lack of multi-angle video monitoring, and unfriendly operation interface, and provides a small , Superior performance, low cost online laser beauty and freckle removal instrument control system.

The online laser beauty and freckle removal instrument control system is characterized in that: the system consists of a processor module (110), a video input channel (120), a communication module (130), a digital input and output module (140), a sensor sampling channel (150), LCD (Liquid Crystal Display) touch screen (160), power supply module (170).

Wherein, the processor module (110) includes a front-end processor (111) and a back-end processor (112), which are core processing modules of system data. The processor module (110) is connected with the video input channel (120), the communication module (130), the digital input and output module (140), the sensor sampling channel (150), and the LCD touch screen (160).

The video input of the processor module (110) comes from the video input channel (120), which includes 4 video input channels, and the 4 video channels correspond to the analog video signals output by the 4 camera devices, and the digital signals processed by the video input channels A video signal is input to the processor module (110).

The communication module (130) includes 3 RS485 communication interfaces and 1 Ethernet interface.

The digital input and output module (140) includes 8 channels of PWM wave output channels and 16 channels of digital input and output interfaces. After level conversion, it is connected with the common I/O of the front-end processor (111) in the processor module (110). The PWM waveform output controls the intensity of the laser and the position movement of the laser probe by controlling the duty cycle of the current. The 16-way digital input and output interface outputs TTL level to switch external devices.

The sensor sampling channel (150) includes 4 high-precision A/D converters and 4 low-speed A/D converters. Communicate with the back-end processor (112) of the processor module (110) through the SPI protocol interface. The precise feedback of the position of the laser probe by the high-precision analog/digital converter is used by the back-end processor (112) to adjust the laser probe to an optimal position.

The LCD touch screen (160) supports video and image display, and can receive touch sensing, and the user can manually set the working parameters of the system through the touch screen, and at the same time see the condition of the face receiving beauty treatment from the screen.

The power supply module (170) supports the output voltage of the 15V power adapter, and converts the voltage value into various types of voltage values required by the system.

Further, the front-end processor (111), that is, the so-called FPGA processor, performs video synthesis on the collected 4-channel video, converts it into 1-channel video signal, completes image denoising, and transmits this channel of signal to the back-end The processor (112) reduces the data processing amount of the back-end processor (112), so that the back-end processor (112) has enough resources to perform image filtering and extract image features such as dark spots and melanomas of facial skin.

At the same time, the digital input and output module (140) is directly controlled by the FPGA processor without the participation of the OMAP138 processor.

Furthermore, the LCD touch screen outputs RGB through the LCD controller of the OMAP138 processor, outputs TTL level RGB data signals in parallel, converts them into serial LVDS (Low Voltage Differential Signaling) signals, and inputs them to the LCD touch screen for display. The LCD touch screen (160) supports multi-interface display. When displaying facial images, it can simultaneously display the images of the left part of the face, the right part of the face, the front of the face, and the images of the four directions below the face.

The invention has the advantages of adopting an embedded design, integrating the required functions of the laser beauty and speckle removing instrument in a smaller volume space, and having low cost and superior performance.

Description of drawings

Fig. 1 is a system structure block diagram of the present invention;

Fig. 2 is a schematic block diagram of the video acquisition orientation of the present invention;

Fig. 3 is a schematic block diagram of the working part of the processor module of the present invention;

Detailed ways

The concrete implementation process of the present invention is described below in conjunction with accompanying drawing:

As shown in Figure 1, an online laser beauty and freckle removal instrument control system consists of a processor module (110), a video input channel (120), a communication module (130), a digital input and output module (140), and a sensor sampling channel (150) ), LCD (Liquid Crystal Display) touch screen (160), and power module (170).

Wherein, the processor module (110) includes a front-end processor (111) and a back-end processor (112), which are core processing modules of system data. The processor module (110) is connected with the video input channel (120), the communication module (130), the digital input and output module (140), the sensor sampling channel (150), and the LCD touch screen (160). Preferably, the front-end processor (111) is an FPGA processor of Xilinx, preferably, the back-end processor (112) is an OMAP138 processor of TI, and the two processors are divided in data processing.

The video input of the processor module (110) comes from the video input channel (120), which includes 4 video input channels, and the 4 video channels correspond to the analog video signals output by the 4 camera devices.

The communication module (130) includes 3 RS485 communication interfaces and 1 Ethernet interface. RS485 communication can prevent interference when transmitting and receiving data externally. Ethernet enables interconnection between devices and data sharing.

The digital input and output module (140) includes 8 channels of PWM wave output channels and 16 channels of digital input and output interfaces. The PWM waveform output controls the intensity of the laser and the position movement of the laser probe by controlling the duty cycle of the current. The 16-way digital input and output interface outputs TTL level to switch external devices.

The sensor sampling channel (150) includes 4 high-precision A/D converters and 4 low-speed A/D converters. The accurate feedback of the position of the laser probe by the high-precision analog/digital converter enables the back-end processor (112) to adjust the optimal position of the laser probe. The low-speed A/D converter measures the external environment where the beauty instrument works, such as temperature and humidity.

The LCD touch screen (160) supports video and image display, and can receive touch sensing, and the user can manually set the working parameters of the system through the touch screen, and at the same time see the condition of the face receiving beauty treatment from the screen. In addition to the above, the LCD touch screen (160) also supports multi-interface display. When displaying facial images, it can simultaneously display the images of the left part of the face, the right part of the face, the front of the face, and the images below the face. The LCD touch screen outputs RGB through the LCD controller of the OMAP138 processor, outputs the RGB data signal of TTL level in parallel, converts it into a serial LVDS (Low Voltage Differential Signaling) signal, and inputs it to the LCD touch screen display, overcoming the problem of TTL level mode Disadvantages such as large power consumption and large EMI electromagnetic interference when transmitting broadband high bit rate data

The power supply module (170) supports the output voltage of the 15V power adapter, and converts the voltage value into various types of voltage values required by the system.

As shown in Figure 2, the 4 channels of analog video of the video input channel (120) come from cameras (121) in different orientations, and the digital signal output by the FPGA can control the moving orientation of the camera, and the cameras are aimed at different parts of the face. The obtained image is processed by OMAP138 to quickly locate the location of skin problems such as melanoma and dark spots, and the effect of removing freckles is achieved by moving the laser probe (122) and controlling the laser intensity.

As shown in Figure 3, the front-end processor (111), that is, the so-called FPGA processor, performs video synthesis on the collected 4-way video and converts it into a 1-way video signal, and the FPGA performs preprocessing of the video image, including the video signal of interest. Region extraction, normalization processing, smoothing processing, and preliminary denoising of the image are completed, and this signal is sent to the back-end processor (112), reducing the data processing amount of the back-end processor (112). Therefore, the back-end processor (112) has sufficient resources to perform image filtering and extract image features such as dark spots and melanomas of the facial skin. The back-end processor (112) adopts the method of edge detection combined with clustering and segmentation for video image feature extraction, that is, using the color clustering and segmentation algorithm to segment according to the difference between the RGB of dark spots and melanoma and the RGB of normal skin, and then The color diffusion and morphological expansion methods are used to determine the edges of dark spots and melanomas. After completing the logical positioning of the black dot, OMAP138 transmits the corresponding data to the FPGA processor, and the FPGA processor controls the input and output module (140) to output PWM waveforms, move the position of the laser probe, and control the laser intensity of the probe at the same time.

Claims (4)

1. An on-line laser beauty and freckle removal instrument control system is characterized in that: the system consists of a processor module (110), a video input channel (120), a communication module (130), a digital input and output module (140), and a sensor sampling channel (150), an LCD (Liquid Crystal Display) touch screen (160), and a power module (170) form; Wherein, described processor module (110) comprises front-end processor (111) and back-end processor (112), and it is the core processing module of system data, processor module (110) and video input channel (120), The communication module (130), the digital input and output module (140), the sensor sampling channel (150), and the LCD touch screen (160) are connected, and the front-end processor (111) adopts the FPGA processor of Xilinx Company, and the back-end processor (112) Using TI's OMAP138 processor, the two processors are divided in data processing; The video input channel (120) includes 4 video input channels, and the 4 video channels correspond to the analog video signals output by the 4 camera devices; The communication module (130) includes 3 RS485 communication interfaces (131) and 1 Ethernet interface (132); RS485 communication can prevent interference when externally transmitting and receiving data; Ethernet realizes interconnection between devices and data sharing ; Described digital input and output module (140) has included 8 road PWM wave output channels, 16 road digital input and output interfaces, after level shifting, with the common I/O of the front-end processor (111) in the processor module (110) The O port is connected; the PWM waveform output controls the intensity of the laser and the position of the laser probe by controlling the duty cycle of the current; 16 digital input and output interfaces output TTL levels to switch external devices; Described sensor sampling channel (150) has included 4 road high-precision analog/digital converters, 4 road low-speed analog/digital converters, through SPI protocol interface and the back-end processor (112 of processor module (110) ) for communication; the high-precision analog/digital converter provides accurate feedback on the position of the laser probe, and the back-end processor (112) adjusts the laser probe to the best position with this; the low-speed analog/digital converter measures the working position of the beauty instrument external environment, the external environment includes temperature and humidity; The LCD touch screen (160) supports video and image display, and can receive touch sensing, the user can manually set the parameters of the system work through the touch screen, and at the same time see the situation of the face receiving the beauty treatment from the screen; The power supply module (170) supports the output voltage of the 15V power adapter, and converts the voltage value into various types of voltage values required by the system. 2. system as claimed in claim 1, is characterized in that: front-end processor (111), just FPGA processor, carries out video synthesis to the 4 road videos of collection, changes into 1 road video signal, completes the denoising of image , and transmit this signal to the back-end processor (112), reducing the data processing capacity of the back-end processor (112), so that the back-end processor (112) has enough resources to perform image filtering and extract facial skin Image features, the image features include dark spots, melanoma. 3. system as claimed in claim 1, is characterized in that: described digital input and output module (140) is directly controlled by FPGA processor, does not need back-end processor, just the participation of OMAP138 processor. 4. The system according to claim 1, characterized in that: the LCD touch screen (160) supports multi-interface display, and when displaying facial images, it can simultaneously display the left part of the human face, the right part of the human face, and the For the images in the front and four directions below the face, the LCD touch screen outputs TTL level RGB data signals in parallel through the back-end processor, that is, the LCD controller of the OMAP138 processor, and then converts them into serial LVDS (Low Voltage Differential Signaling) signal input to LCD touch screen display.