CN110664379A - Device for collecting human head skin image - Google Patents

Abstract

The invention discloses a device for collecting human head skin images, which comprises a motor driving unit, an LED driving unit, a main control unit, a camera unit, a HUB concentrator unit and an upper computer, wherein the motor driving unit is connected with the LED driving unit; the motor driving unit drives the stepping motor to drive the camera to realize automatic focusing; the LED driving unit controls the LED light source to provide light source for the camera; the main control unit is in communication connection with the LED driving unit and the motor driving unit and is used for controlling motor movement and the LED light source, and the main control unit is connected to the upper computer through the HUB concentrator unit to perform data interaction; the camera unit collects images, and the images are connected through the HUB concentrator unit and transmitted to the upper computer; the HUB concentrator unit connects the main control unit and the camera unit to an upper computer through a USB bus; the host computer passes through HUB concentrator unit and gathers the image of camera unit to connect main control unit, control step motor and LED light source through HUB concentrator unit. The invention has small electric image data acquisition and detection error.

Description

Device for collecting human head skin image

Technical Field

The invention relates to the technical field of image detection and analysis, in particular to a device for acquiring a human head skin image.

Background

At present, hair is one of the important outward signs of body health as a commonly used skin assistor. The professional scalp detector can help everybody to intuitively and quickly know the hair condition and the bald condition of the everybody, know the health state of the hair follicles of the everybody in time and prevent and stop the bald. According to the traditional head skin detection camera, manual focusing is needed for obtaining a head skin image, and the operation is troublesome; the visual area is few, only can be checked locally, and the overall hair growth condition of the human head cannot be reflected comprehensively.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a device for collecting a human head skin image, which adopts an automatic focusing mode instead of a traditional manual focusing mode, reduces the complexity of a user for obtaining the head skin image, enlarges a visual area for detection, and facilitates a detection system to analyze the whole state of the head skin.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a device for collecting human head skin images comprises a motor driving unit, an LED driving unit, a main control unit, a camera unit, a HUB concentrator unit and an upper computer; the motor driving unit is used for driving a stepping motor, and the stepping motor drives the camera to move forward and backward to realize automatic focusing; the LED driving unit is used for controlling the LED light source to be in an off or on state and providing a light source for the camera; the main control unit is in communication connection with the LED driving unit and the motor driving unit and is used for controlling the motor motion and the state of the LED light source, and the main control unit is connected to the upper computer through the HUB concentrator unit and performs data interaction with the upper computer; the camera unit is used for collecting images, is connected to an upper computer through the HUB concentrator unit and transmits the images to the upper computer; the HUB concentrator unit connects the main control unit and the camera unit to the upper computer through a USB bus; the upper computer collects images of the camera unit through the HUB concentrator unit and is connected with the main control unit through the HUB concentrator unit, and therefore the stepping motor and the LED light source are controlled.

In the above technical solution, the motor driving unit includes a motor driving chip U1, U2, a voltage step-down chip U4, and terminals P1, P2, and P3, U1 is used to control a stepping motor a for implementing a zoom function of the camera, U2 is used to control a stepping motor B for implementing a focus function of the camera, U4 is used to reduce 5V to 3.3V, and terminal P1 is used to select a power supply of U1, U2 to be 5V or 3.3V, and is connected to an I/O pin of the main control unit through the terminal P2, and is connected to the stepping motor A, B through the terminal P3. The chip model of the motor driving chips U1 and U2 is L293 DD.

In the above technical solution, the LED driving unit includes LED driving chips U1, U2, U3; an EN pin of the U1 is pulled down to GND through a resistor R1, the U1 is in an off state by default, and the LED is turned off; the EN is connected to the resistor R7, the other end of the resistor R7 is connected to a control signal R-DIM, the R-DIM is connected to an IO pin of the main control unit, the main control unit outputs a high level to the R-DIM, the LED is turned on, the main control unit outputs a low level to the R-DIM, the LED is turned off, an FB pin of the U1 is connected to the resistor R2, and the other end of the resistor R2 is connected to GND and used for adjusting the brightness of the LED; the FB pin of U1 is connected to the RGB-end of CN1 at the same time, the IN pin of U1 is connected to +5V of the power, one end of inductance L1 is connected to +5V of the power, another end is connected to SW pin of U1, one end of Schottky diode D1 is connected to SW pin of U1, another end is connected to RGB + end of CN1, terminal CN1 is connected to positive and negative poles of LED; an EN pin of the U2 is pulled down to GND through a resistor R3, the U2 is in an off state by default, and the LED is turned off; EN is connected to a resistor R8, the other end of the resistor R8 is connected to a control signal G-DIM, the G-DIM is connected to an IO pin of a main control unit, the main control unit outputs a high level to the G-DIM, an LED is turned on, the main control unit outputs a low level to the G-DIM, and the LED is turned off; the FB pin of U2 is connected to resistor R4, the other end of resistor R4 is connected to GND for adjusting the brightness of the LED, the FB pin of U2 is simultaneously connected to the FP-end of CN1, and the IN pin of U2 is connected to +5V power supply; one end of the inductor L2 is connected to +5V of the power supply, and the other end is connected to the SW pin of U2; one end of the Schottky diode D2 is connected to the SW pin of U2, the other end is connected to the FP + end of CN1, and the terminal CN1 is connected to the positive and negative electrodes of the LED; an EN pin of the U3 is pulled down to GND through a resistor R5, the U3 is in an off state by default, and the LED is turned off; EN is connected to a resistor R9, the other end of the resistor R9 is connected to a control signal B-DIM, the B-DIM is connected to an IO pin of a main control unit, the main control unit outputs a high level to the B-DIM, an LED is turned on, the main control unit outputs a low level to the B-DIM, and the LED is turned off; the FB pin of U3 is connected to a resistor R6, the other end of the resistor R6 is connected to GND for adjusting the brightness of the LED, the FB pin of U3 is simultaneously connected to the UV-end of CN1, and the IN pin of U3 is connected to +5V power supply; one end of the inductor L3 is connected to +5V of the power supply, and the other end is connected to the SW pin of U3; one end of the schottky diode D3 is connected to the SW pin of U3, the other end is connected to the UV + terminal of CN1, and the terminal CN1 is connected to the anode and cathode of the LED. The LED driving chips U1, U2 and U3 are MP3302 DJ-LE-Z.

In the above technical solution, the main control unit includes a main control chip U8 for controlling the motor unit and the LED lamp driving unit, a resistor R16 and a capacitor C8 form a power-on reset circuit of U8, the capacitor C10 is a power filter capacitor of U8, the capacitor is a bypass capacitor of a VCAP pin of U8, the U8 is connected to a control pin of the motor driving unit through a P6 port, and is connected to a control pin of the LED driving unit through R-DIM, G-DIM, and B-DIM, TXD and RXD pins of U8 are connected to RXD and TXD pins of U7, and the USB serial port chip U7 is connected to the HUB circuit of the HUB through UD + and UD-. The chip model of the main control chip U8 is STM8S103F3P 6.

In the above technical solution, the camera unit includes a DSP main control chip U2, a photosensitive chip U1, and an EEPROM chip U3; the button S1 is a photographing button, one end of the button S1 is connected to GND, the other end is connected to a V3.3 power supply through a resistor R2, and the button S1 is pressed to photograph; the resistors R3, R4 and R5 are pull-up resistors of U3, and the camera unit is connected to the HUB HUB unit through a CON-USB port.

In the above technical solution, the HUB unit includes a HUB control chip U5; the crystal oscillator X1 provides an oscillation source for U5; an OVCJ pin of U5 is a +5V power supply pulled up through a resistor R10, an XRSTJ pin of U5 is connected to VDD33_ O through a resistor R14, a BUSM pin of U5 is connected to a +5V power supply through a resistor R15, and a HUB HUB unit is connected to a USB serial port conversion chip U7 of a main control unit through a CON 3; connecting to a camera unit through a CON 2; connected to an upper computer through a CON 1. The chip model of the HUB control chip U5 is FE1.1S.

The invention has the beneficial effects that: the automatic focusing mode is adopted to replace manual focusing, so that the complexity of manual focusing is greatly reduced, the use threshold of a user is reduced, and market expansion is won. The maximum visible area of the image is increased from 2CM to 10CM, the visible area of the image is increased by 5 times, and the head skin state can be analyzed globally. The detection error is reduced, the accuracy of the detection result is improved, and the method is more persuasive.

Drawings

Fig. 1 is a schematic block diagram of the present invention.

Fig. 2 is a schematic circuit diagram of the motor driving unit of the present invention.

Fig. 3 is a schematic circuit diagram of the LED driving unit of the present invention.

Fig. 4 is a circuit schematic of the master control unit of the present invention.

Fig. 5 is a schematic circuit diagram of the camera unit of the present invention.

Fig. 6 is a circuit schematic of the HUB unit of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, a schematic block diagram of a device for acquiring a head skin image, the device is composed of a motor driving unit, an LED driving unit, a main control unit, a camera unit, a HUB unit and a tablet computer. The embodiment adopts a tablet personal computer as an upper computer. The motor driving unit is used for driving the stepping motor, and the stepping motor drives the camera to move forward and backward, so that the automatic focusing function is realized. The LED driving unit is used for controlling the LED light source to be in an off or on state and providing a light source for the camera. The main control unit is connected with the LED driving unit and the motor driving unit and used for controlling the motor motion and the state of the LED lamp, and the main control unit is connected to the tablet personal computer through the HUB concentrator unit and used for data interaction with the tablet personal computer. The camera unit is used for gathering the image, is connected to the panel computer through HUB concentrator unit, transmits the image to the panel computer. The HUB unit connects the main control unit and the camera unit to the tablet computer through a USB bus. The tablet computer gathers the image of camera unit through the HUB concentrator to connect the main control unit through HUB concentrator unit, thereby control motor and LED light source.

As shown in fig. 2, which is a circuit diagram of the motor driving unit, the stepping motor is controlled by two motor driving chips L293DD, i.e., U1 and U2, and U1 is used for controlling the stepping motor to realize the zoom function of the camera; the U2 is used for controlling the stepping motor to realize the focusing function of the camera. Connected to the stepper motor through terminal P3. Connected to the I/O pin of the master unit through terminal P2. U4 is used for reducing voltage to 3.3V from 5V, capacitors C1 and C3 are filter capacitors on the power supply input side of U4, and capacitors C2 and C4 are filter capacitors on the power supply output side of U4. The terminal P1 is used for selecting the power supply of U1 and U2 to be 5V or 3.3V.

As shown in fig. 3, the circuit of the LED driving unit is a three-way LED driving circuit composed of three MP3302DJ-LE-Z, i.e., U1, U2, and U3, the three-way LED driving principle is the same, and the driving principle is analyzed by selecting U1. An EN pin of the U1 is pulled down to GND through a resistor R1, the U1 is in a closed state by default, the LED is turned off, the EN is connected to the resistor R7, the other end of the resistor R7 is connected to a control signal R-DIM, the R-DIM is connected to an IO pin of a main control unit, the main control unit outputs a high level to the R-DIM, and the LED is turned on; the main control unit outputs low level to the R-DIM, and the LED is turned off. The FB pin of the U1 is connected to a resistor R2, and the other end of the resistor R2 is connected to GND for adjusting the brightness of the LED.

The FB pin of U1 is connected to the RGB-terminals of CN1 at the same time. The IN pin of U1 is connected to +5V power supply, and capacitor C1 acts as a filter capacitor for the IN pin of U1. One end of the inductor L1 is connected to +5V of the power supply, and the other end is connected to the SW pin of U1; one end of the schottky diode D1 is connected to the SW pin of U1, and the other end is connected to the RGB + terminal of CN 1. Terminal CN1 is connected to the positive and negative poles of the LED. An EN pin of the U2 is pulled down to GND through a resistor R3, the U2 is in an off state by default, and the LED is turned off; EN is connected to a resistor R8, the other end of the resistor R8 is connected to a control signal G-DIM, the G-DIM is connected to an IO pin of a main control unit, the main control unit outputs a high level to the G-DIM, an LED is turned on, the main control unit outputs a low level to the G-DIM, and the LED is turned off; the FB pin of U2 is connected to resistor R4, the other end of resistor R4 is connected to GND for adjusting the brightness of the LED, the FB pin of U2 is simultaneously connected to the FP-end of CN1, and the IN pin of U2 is connected to +5V power supply; one end of the inductor L2 is connected to +5V of the power supply, and the other end is connected to the SW pin of U2; one end of the Schottky diode D2 is connected to the SW pin of U2, the other end is connected to the FP + end of CN1, and the terminal CN1 is connected to the positive and negative electrodes of the LED; an EN pin of the U3 is pulled down to GND through a resistor R5, the U3 is in an off state by default, and the LED is turned off; EN is connected to a resistor R9, the other end of the resistor R9 is connected to a control signal B-DIM, the B-DIM is connected to an IO pin of a main control unit, the main control unit outputs a high level to the B-DIM, an LED is turned on, the main control unit outputs a low level to the B-DIM, and the LED is turned off; the FB pin of U3 is connected to a resistor R6, the other end of the resistor R6 is connected to GND for adjusting the brightness of the LED, the FB pin of U3 is simultaneously connected to the UV-end of CN1, and the IN pin of U3 is connected to +5V power supply; one end of the inductor L3 is connected to +5V of the power supply, and the other end is connected to the SW pin of U3; one end of the schottky diode D3 is connected to the SW pin of U3, the other end is connected to the UV + terminal of CN1, and the terminal CN1 is connected to the anode and cathode of the LED. The LED driving chips U1, U2 and U3 are MP3302 DJ-LE-Z.

As shown in fig. 4, U8 is used to control the motor unit and the LED lamp driving unit, which is a main control unit circuit. The resistor R16 and the capacitor C8 form a power-on reset circuit of U8. Capacitor C10 is the power filter capacitor of U8, and the capacitor is the bypass capacitor of the VCAP pin of U8. The U8 is connected to the control pins of the motor drive unit through the P6 port. The LED lamp driving circuit is connected to a control pin of an LED lamp driving unit through R-DIM, G-DIM and B-DIM. The TXD, RXD pins of U8 are connected to the RXD, TXD pins of U7. U7 is connected to the HUB HUB circuitry through UD + and UD-.

As shown in fig. 5, the circuit of the camera unit is composed of a DSP main control chip U2, a light sensing chip U1 and an EEPROM chip U3. The button S1 is a photographing button, one side of the button S1 is connected to GND, the other side is connected to a V3.3 power supply through a resistor R2, and the button S1 is pressed to photograph. The capacitors C12, C17, C18, C20, C22 and C14 are filter capacitors of V3.3; the capacitors C13 and C15 are filter capacitors of V1.8; the capacitors C7, C8 and C9 are filter capacitors of AVDD 33; the capacitors C5 and C6 are filter capacitors of AVDD 5. The resistors R3, R4 and R5 are pull-up resistors of U3. The camera unit circuit is connected to the HUB unit circuit through the CON-USB port.

As shown in FIG. 6, in the HUB HUB circuit, the capacitors C12, C13 and C14 are power filter capacitors of U5; the crystal oscillator X1 provides an oscillation source for U5; the OVCJ pin of U5 is powered by +5V pulled up through resistor R10 and filtered through capacitor C4. The XRSTJ pin of U5 is connected to VDD33_ O through resistor R14, and capacitor C5 is the filter capacitor of VDD33_ O. The BUSM pin of U5 is connected to the +5V supply through resistor R15. The HUB unit is connected to the U7 of the master unit circuit through CON 3; connecting to a camera unit through a CON 2; connected to the tablet computer through CON 1.

The above examples are intended to illustrate rather than to limit the invention, and all equivalent changes and modifications made by the methods described in the claims of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A device for collecting human head skin images is characterized in that: the LED driving system comprises a motor driving unit, an LED driving unit, a main control unit, a camera unit, a HUB concentrator unit and an upper computer; the motor driving unit is used for driving a stepping motor, and the stepping motor drives the camera to move forward and backward to realize automatic focusing; the LED driving unit is used for controlling the LED light source to be in an off or on state and providing a light source for the camera; the main control unit is in communication connection with the LED driving unit and the motor driving unit and is used for controlling the motor motion and the state of the LED light source, and the main control unit is connected to the upper computer through the HUB concentrator unit and performs data interaction with the upper computer; the camera unit is used for collecting images, is connected to an upper computer through the HUB concentrator unit and transmits the images to the upper computer; the HUB concentrator unit connects the main control unit and the camera unit to the upper computer through a USB bus; the upper computer collects images of the camera unit through the HUB concentrator unit and is connected with the main control unit through the HUB concentrator unit, and therefore the stepping motor and the LED light source are controlled.

2. The apparatus for acquiring the skin image of the head of the human body according to claim 1, wherein: the motor driving unit comprises a motor driving chip U1, a U2, a voltage reduction chip U4, terminals P1, P2 and P3, U1 is used for controlling a stepping motor A for realizing the zooming function of the camera, U2 is used for controlling a stepping motor B for realizing the focusing function of the camera, U4 is used for reducing 5V to 3.3V, a terminal P1 is used for selecting the power supply of U1 and U2 to be 5V or 3.3V, the power supply is connected to an I/O pin of the main control unit through the terminal P2, and the power supply is connected to the stepping motor A, B through the terminal P3.

3. A device for acquiring an image of the skin of a human head according to claim 2, wherein: the chip model of the motor driving chips U1 and U2 is L293 DD.

4. The apparatus for acquiring the skin image of the head of the human body according to claim 1, wherein: the LED driving unit comprises LED driving chips U1, U2 and U3; an EN pin of the U1 is pulled down to GND through a resistor R1, the U1 is in an off state by default, and the LED is turned off; the EN is connected to the resistor R7, the other end of the resistor R7 is connected to a control signal R-DIM, the R-DIM is connected to an IO pin of the main control unit, the main control unit outputs a high level to the R-DIM, the LED is turned on, the main control unit outputs a low level to the R-DIM, the LED is turned off, an FB pin of the U1 is connected to the resistor R2, and the other end of the resistor R2 is connected to GND and used for adjusting the brightness of the LED; the FB pin of U1 is connected to the RGB-end of CN1 at the same time, the IN pin of U1 is connected to +5V of the power, one end of inductance L1 is connected to +5V of the power, another end is connected to SW pin of U1, one end of Schottky diode D1 is connected to SW pin of U1, another end is connected to RGB + end of CN1, terminal CN1 is connected to positive and negative poles of LED; an EN pin of the U2 is pulled down to GND through a resistor R3, the U2 is in an off state by default, and the LED is turned off; EN is connected to a resistor R8, the other end of the resistor R8 is connected to a control signal G-DIM, the G-DIM is connected to an IO pin of a main control unit, the main control unit outputs a high level to the G-DIM, an LED is turned on, the main control unit outputs a low level to the G-DIM, and the LED is turned off; the FB pin of U2 is connected to resistor R4, the other end of resistor R4 is connected to GND for adjusting the brightness of the LED, the FB pin of U2 is simultaneously connected to the FP-end of CN1, and the IN pin of U2 is connected to +5V power supply; one end of the inductor L2 is connected to +5V of the power supply, and the other end is connected to the SW pin of U2; one end of the Schottky diode D2 is connected to the SW pin of U2, the other end is connected to the FP + end of CN1, and the terminal CN1 is connected to the positive and negative electrodes of the LED; an EN pin of the U3 is pulled down to GND through a resistor R5, the U3 is in an off state by default, and the LED is turned off; EN is connected to a resistor R9, the other end of the resistor R9 is connected to a control signal B-DIM, the B-DIM is connected to an IO pin of a main control unit, the main control unit outputs a high level to the B-DIM, an LED is turned on, the main control unit outputs a low level to the B-DIM, and the LED is turned off; the FB pin of U3 is connected to a resistor R6, the other end of the resistor R6 is connected to GND for adjusting the brightness of the LED, the FB pin of U3 is simultaneously connected to the UV-end of CN1, and the IN pin of U3 is connected to +5V power supply; one end of the inductor L3 is connected to +5V of the power supply, and the other end is connected to the SW pin of U3; one end of the schottky diode D3 is connected to the SW pin of U3, the other end is connected to the UV + terminal of CN1, and the terminal CN1 is connected to the anode and cathode of the LED.

5. The apparatus for acquiring the skin image of the head of the human body according to claim 4, wherein: the LED driving chips U1, U2 and U3 are MP3302 DJ-LE-Z.

6. The apparatus for acquiring the skin image of the head of the human body according to claim 1, wherein: the main control unit comprises a main control chip U8 used for controlling the motor unit and the LED lamp driving unit, a resistor R16 and a capacitor C8 form a power-on reset circuit of the U8, the capacitor C10 is a power supply filter capacitor of the U8, the capacitor is a bypass capacitor of a VCAP pin of the U8, the U8 is connected to a control pin of the motor driving unit through a P6 port and is connected to a control pin of the LED driving unit through R-DIM, G-DIM and B-DIM, TXD and RXD pins of the U8 are connected to RXD and TXD pins of the U7, and the USB serial port conversion chip U7 is connected to a HUB concentrator circuit through UD + and UD-.

7. The apparatus for acquiring the skin image of the head of the human body as claimed in claim 6, wherein: the chip model of the main control chip U8 is STM8S103F3P 6.

8. The apparatus for acquiring the skin image of the head of the human body according to claim 1, wherein: the camera unit comprises a DSP main control chip U2, a photosensitive chip U1 and an EEPROM chip U3; the button S1 is a photographing button, one end of the button S1 is connected to GND, the other end is connected to a V3.3 power supply through a resistor R2, and the button S1 is pressed to photograph; the resistors R3, R4 and R5 are pull-up resistors of U3, and the camera unit is connected to the HUB HUB unit through a CON-USB port.

9. The apparatus for acquiring the skin image of the head of the human body according to claim 1, wherein: the HUB unit comprises a HUB control chip U5; the crystal oscillator X1 provides an oscillation source for U5; an OVCJ pin of U5 is a +5V power supply pulled up through a resistor R10, an XRSTJ pin of U5 is connected to VDD33_ O through a resistor R14, a BUSM pin of U5 is connected to a +5V power supply through a resistor R15, and a HUB HUB unit is connected to a USB serial port conversion chip U7 of a main control unit through a CON 3; connecting to a camera unit through a CON 2; connected to an upper computer through a CON 1.

10. The apparatus for acquiring the skin image of the head of the human body according to claim 1, wherein: the chip model of the HUB control chip U5 is FE1.1S.

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