CN210961930U

CN210961930U - Skin mirror image acquisition circuit

Info

Publication number: CN210961930U
Application number: CN201921509839.2U
Authority: CN
Inventors: 计政江; 李华海; 常俊
Original assignee: BEIJING DEMAT JIEKANG TECHNOLOGY DEVELOPMENT CO LTD
Current assignee: BEIJING DEMAT JIEKANG TECHNOLOGY DEVELOPMENT CO LTD
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-07-10
Anticipated expiration: 2029-09-11

Abstract

The utility model belongs to the technical field of the electronic technology and specifically relates to indicate a skin mirror image acquisition circuit, include the skin mirror and install the image acquisition regulation and control circuit on the skin mirror, image acquisition regulation and control circuit includes main control MCU, CMOS image collector, AD conversion module, the module of adjusting luminance, wireless communication module and display screen, CMOS image collector is used for gathering the image of the position that the skin mirror was observed, convert the image of gathering into digital signal and with this digital signal input main control MCU via AD conversion module again, the module of adjusting luminance that is used for adjusting the position that CMOS image collector gathered the image, the utility model provides a pair of skin mirror image acquisition circuit, through the voltage of adjusting white light L ED1 and ruddiness L ED2 to adjust white light L ED1 and ruddiness L ED 2's luminance, solved the bulky problem of skin mirror image acquisition circuit.

Description

Skin mirror image acquisition circuit

Technical Field

The utility model belongs to the technical field of the electron technique and specifically relates to indicate a dermatoscope image acquisition circuit.

Background

With the acceleration of the information age, the world enters the age of digital information, more forms of information are stored in various media in a digital manner, more and more information starts to be converted from a traditional analog storage and processing manner to a digital storage and processing manner, image information is one of the most important information sources of human beings, image acquisition technology and image processing technology for improving image quality also start to be converted to digital, and before the advent of digital computers, the common characteristic of image processing is that image information is processed in a traditional analog manner, and since the first digital computer comes out, with the development and maturity of computer technology, digital image acquisition and processing become a rapidly-developing subject.

The image acquisition needs the light to be matched, the method basically adopted in the prior art achieves the purpose of adjusting the brightness of light by arranging a plurality of L ED lamps and adjusting the number of the L ED lamps, but the method causes more L ED lamps integrated in the image acquisition circuit, and further causes the problems of larger volume and increased weight of the image acquisition circuit.

Disclosure of Invention

The utility model provides a skin mirror image acquisition circuit to prior art's problem is through the voltage of adjusting white light L ED1 and ruddiness L ED2 to adjust white light L ED1 and ruddiness L ED 2's luminance, the problem that skin mirror image acquisition circuit volume is big has been solved.

In order to solve the technical problem, the utility model adopts the following technical scheme that a skin mirror image acquisition circuit comprises a skin mirror and an image acquisition regulation and control circuit arranged on the skin mirror, the image acquisition regulation and control circuit comprises a main control MCU, a CMOS image collector, an A/D conversion module, a dimming module, a wireless communication module and a display screen, the CMOS image collector is used for collecting images at the observed position of the skin mirror, the collected images are converted into digital signals through the A/D conversion module and are input into the main control MCU, the main control MCU transmits the received digital signals to the display screen through the wireless communication module, the dimming module is used for adjusting the brightness of the position where the images are collected by the CMOS image collector, the dimming module comprises a voltage supply unit, a white light L ED1, a red light L ED2, an MOS tube M2, the MOS tube M2, an adjustable resistor R2, a control switch S2 and a control switch S2, the white light is connected with the drain of the adjustable MOS tube M2 after passing through the anode of the white light MCU 2, the white light is connected with the MOS tube 2, the drain of the adjustable resistor, the MOS tube 2 is electrically connected with the MOS transistor, the cathode of the MOS transistor 2, the MOS transistor is electrically connected with the MOS transistor S2, the cathode of the MOS transistor S2, the adjustable resistor of the MOS transistor S2, the MOS transistor is connected with the cathode of the MOS transistor S2, the cathode of the MOS transistor S2, the LED switch of the LED switch is electrically connected with the LED switch 2, the LED switch of the LED.

Preferably, a signal amplification module is connected between the CMOS image collector and the a/D conversion module, and the signal amplification module is configured to amplify an image signal collected by the CMOS image collector, and then convert the image signal into a digital signal through the a/D conversion module.

Preferably, the signal amplification module comprises an operational amplifier X1, a resistor R3 and a resistor R4, wherein the in-phase end of the operational amplifier X1 is electrically connected with the output end of the CMOS image collector through the resistor R1, the inverting end of the operational amplifier X1 is connected with a reference voltage Vref through the resistor R2, and the output end of the operational amplifier X1 is electrically connected with the input end of the a/D conversion module.

Preferably, the reset end of the main control MCU is connected to a reset switch S3.

Preferably, the output end of the main control MCU is electrically connected with a memory.

Preferably, the input end of the main control MCU is electrically connected with a temperature sensor, the output end of the main control MCU is electrically connected with a protection unit, the temperature sensor is used for detecting the temperature of the CMOS image collector, and the protection unit is used for disconnecting the power supply voltage of the CMOS image collector.

Preferably, the protection unit includes a MOS transistor M3, a gate of the MOS transistor M3 is electrically connected to an output terminal of the main control MCU, a drain of the MOS transistor M3 is connected to a supply voltage of the CMOS image acquirer, and a source of the MOS transistor M3 is electrically connected to a voltage terminal of the CMOS image acquirer.

The utility model has the advantages that:

the utility model provides a skin mirror image acquisition circuit, in using, when the master control MCU detects that control switch S1 is closed, then the master control MCU output drive signal is to MOS pipe M1, make MOS pipe M1 switch on, white light L ED1 is bright this moment, thereby the image on the skin mirror can be gathered to the CMOS image collector, the image of gathering carries out analog-to-digital conversion after the AD conversion module and inputs master control MCU, the master control MCU sends the image data that receives to the display screen through the wireless communication module again, for the user looks over, when the image luminance that the CMOS image collector gathered is not enough, accessible adjusting knob K1 changes the resistance of adjustable resistance R1, thereby change the voltage on white light L ED1, and then adjust the luminance of white light 2, make the CMOS image collector can gather the image that luminance is suitable, increase ruddiness L ED2, let the user can change the colour of light according to actual need, and then gather the image of different light, this skin mirror image acquisition circuit, through adjusting white light ED L ED1 or the red light volume 1 that the red light volume 4624 and red light integrated with the luminous volume 4624 that the luminous volume increase, thereby the red light volume 4624 and the integrated problem of the integrated lamp that the red light has avoided the ED 465 to increase.

Drawings

Fig. 1 is a flow chart of the structure of the present invention.

Fig. 2 is a schematic circuit diagram of the dimming module of the present invention.

Fig. 3 is a schematic circuit diagram of the signal amplification module of the present invention.

Fig. 4 is the circuit connection schematic diagram of the main control MCU, the temperature sensor, the protection unit and the CMOS image collector of the present invention.

The reference numerals in fig. 1 to 4 include:

the device comprises a 1-CMOS image collector, a 2-A/D conversion module, a 3-dimming module, a 4-wireless communication module, a 5-display screen, a 6-voltage supply unit, a 7-signal amplification module, an 8-memory, a 9-temperature sensor and a 10-protection unit.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention will be described in detail with reference to the accompanying drawings.

The skin mirror image acquisition circuit provided by the embodiment, as shown in fig. 1 and fig. 2, includes a skin mirror and an image acquisition regulation and control circuit installed on the skin mirror, the image acquisition regulation and control circuit includes a main control MCU, a CMOS image acquirer 1, an a/D conversion module 2, a dimming module 3, a wireless communication module 4 and a display screen 5, the CMOS image acquirer 1 is configured to acquire an image at a position observed by the skin mirror, the acquired image is converted into a digital signal by the a/D conversion module 2 and the digital signal is input to the main control MCU, the main control MCU transmits the received digital signal to the display screen 5 by the wireless communication module 4, the dimming module 3 is configured to adjust the brightness at the position where the CMOS image acquirer 1 acquires the image, the dimming module 3 includes a voltage supply unit 6, a white light ED 28 ED1, a white light ED L ED2, an MOS transistor M2, an adjustable resistor R2, a control switch S2, a drain of the white light led 2, an adjustable resistor M2, an adjustable resistor, a drain of the MOS transistor M2, a drain of the white light transistor M2, an adjustable resistor, a gate of the MOS transistor M2, an adjustable resistor, a red light transistor M2, a red light transistor M switch, a gate of the adjustable resistor, a red light transistor M switch, a red light transistor 2, a red light transistor M switch, a gate of a red light transistor, a gate of an adjustable resistor, a red light transistor M2, a red light transistor, a.

Preferably, the wireless communication module 4 mentioned in this embodiment may be one of a bluetooth module, a WIFI module or a 4G communication module, the main control MCU may adopt a single chip or a control chip such as an FPGA, and the a/D conversion module 2 is prior art.

Specifically, in combination with fig. 2, when the main control MCU is used, when the main control MCU detects that the control switch S1 is closed, the main control MCU outputs a driving signal to the MOS transistor M1 to turn on the MOS transistor M1, and at the time, the white light L ED1 is bright, so that the CMOS image acquirer 1 can acquire an image on the dermoscope, the acquired image is subjected to analog-to-digital conversion by the a/D conversion module 2 and then input to the main control MCU, and the main control MCU transmits the received image data to the display screen 5 through the wireless communication module 4 for a user to view, when the image brightness acquired by the CMOS image acquirer 1 is insufficient, the resistance value of the adjustable resistor R1 is changed by the adjustment knob K1 to change the voltage on the white light ED1, so that the brightness of the white light L0 ED 9 is adjusted, so that the CMOS image acquirer 1 can acquire an image with proper brightness, the red light L ED2 is added, so that the user can replace the color of light according to actual needs, further acquire images of different light, the red light L ED2 is adjusted by the brightness adjustment knob K2, the specific adjustment mode, the red light collection L is more convenient for acquiring images, and the red light collection L can be used for the skin image collection of the skin with the same color of the skin by the skin with the skin ED 3659light collection integrated circuit L, so that the red light collection of the red light collection L and the skin can be obtained by the skin with the high brightness of the skin by the skin integrated light collection efficiency of the skin integrated light collection 365959365936.

In the skin mirror image acquisition circuit provided in this embodiment, as shown in fig. 1 and fig. 3, a signal amplification module 7 is connected between the CMOS image acquirer 1 and the a/D conversion module 2, and the signal amplification module 7 is configured to amplify an image signal acquired by the CMOS image acquirer 1, and then convert the image signal into a digital signal through the a/D conversion module 2; the signal amplification module 7 comprises an operational amplifier X1, a resistor R1 and a resistor R2, wherein the in-phase end of the operational amplifier X1 is electrically connected with the output end of the CMOS image collector 1 after passing through the resistor R1, the reverse-phase end of the operational amplifier X1 is connected with a reference voltage Vref after passing through the resistor R2, and the output end of the operational amplifier X1 is electrically connected with the input end of the A/D conversion module 2.

Specifically, after the image is collected, the image is easily affected by various noises and the like in the transmission process, so that the signal amplification module 7 is added to amplify the image signal, the influence of the noises can be reduced, and the image transmission is more stable; referring to fig. 3, the values of the resistor R3 and the resistor R4 are equal, the values of the feedback resistor R5 and the feedback resistor R6 are equal, that is, the input resistor selects a resistor with the same specification, the feedback resistor selects a resistor with the same specification, the operational amplifier X1 adopts a differential operational amplifier, the input end of the differential operational amplifier is in a single-ended input state, one end of the operational amplifier X1 is a single-ended input variable electrical signal, that is, the output electrical signal of the CMOS image collector 1, and the other end of the operational amplifier X1 uses the reference voltage Vref to keep the voltage stable with high reliability, that is, the reference voltage Vref is used for comparison to keep the stability of the signal amplification process, and the principle similar to differential input is. The differential operational amplifier is used as an electric signal processing part acquired by the CMOS image acquisition device 1, so that an electric signal with single-ended change is changed into a differential signal with double-ended change, the dynamic range of the signal is improved, the input requirement of rear-end high-speed differential AD sampling is met, the anti-interference, anti-noise and anti-electromagnetic interference capabilities of the signal are improved, and the image acquisition quality is ensured on hardware. In addition, the reference voltage Vref can be obtained by converting the power supply voltage through a voltage stabilization chip, which is partially a prior art.

In the dermoscope image capturing circuit provided by this embodiment, as shown in fig. 1, the reset end of the main control MCU is connected to a reset switch S3.

Specifically, the master MCU is reset through the reset switch S3, so that the circuit parameters of the dermoscope image acquisition circuit can be readjusted.

In the skin mirror image capturing circuit provided by this embodiment, as shown in fig. 1, an output end of the main control MCU is electrically connected to a memory 8.

Specifically, the images collected by the CMOS image collector 1 may be stored in the memory 8, which facilitates to view all the images.

As shown in fig. 1 and 4, an input end of a main control MCU is electrically connected to a temperature sensor 9, an output end of the main control MCU is electrically connected to a protection unit 10, the temperature sensor 9 is configured to detect a temperature of a CMOS image collector 1, and the protection unit 10 is configured to disconnect a power supply voltage of the CMOS image collector 1; the protection unit 10 comprises an MOS tube M3, the grid of the MOS tube M3 is electrically connected with the output end of the main control MCU, the drain of the MOS tube M3 is connected with the power supply voltage of the CMOS image collector 1, and the source of the MOS tube M3 is electrically connected with the voltage end of the CMOS image collector 1.

Specifically, when the CMOS image collector 1 is in a normal working condition, the main control MCU outputs a turn-on signal to the MOS transistor M3, and the MOS transistor M3 is turned on, so that the CMOS image collector 1 can be powered on to work normally; after the CMOS image collector 1 is used for a long time, if the temperature exceeds the normal set value of the temperature sensor 9, the main control MCU stops outputting the on signal, the MOS transistor M3 is turned off, and the CMOS image collector 1 stops working when no voltage is supplied. The protection unit 10 and the temperature sensor 9 can protect the CMOS image acquirer 1 in real time and prevent it from being damaged.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, but all the technical solutions of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a dermatoscope image acquisition circuit, includes the dermatoscope and installs the image acquisition regulation and control circuit on the dermatoscope, its characterized in that: the image acquisition regulation and control circuit comprises a main control MCU, a CMOS image collector, an A/D conversion module, a dimming module, a wireless communication module and a display screen, wherein the CMOS image collector is used for collecting images of the positions observed by the skin mirror, the A/D conversion module is used for converting the collected images into digital signals and inputting the digital signals into the main control MCU, the main control MCU is used for transmitting the received digital signals to the display screen through the wireless communication module, and the dimming module is used for adjusting the brightness of the positions where the images are collected by the CMOS image collector;

the dimming module comprises a voltage supply unit, a white light L ED1, a red light L ED2, a MOS tube M2, an adjustable resistor R2, a control switch S2 and a control switch S2, wherein an anode of the white light 2 ED2 is connected with a drain of the MOS tube M2 after passing through the adjustable resistor R2, an anode of the red light 2 ED2 is connected with a drain of the MOS tube M2 after passing through the adjustable resistor R2, a source of the MOS tube M2 and a source of the MOS tube M2 are respectively and electrically connected with a voltage output end of the voltage supply unit, a gate of the MOS tube M2 is electrically connected with a first output end of the main control MCU, a gate of the MOS tube M2 is electrically connected with a second output end of the MCU, a cathode of the white light 2 and a cathode of the red light 2 ED2 are respectively and grounded, a resistance adjusting end of the adjustable resistor R2 is connected with a knob K2, and a resistance adjusting end of the control switch S2, and an input end of the control switch S2.

2. The dermatoscope image acquisition circuit of claim 1, wherein: and a signal amplification module is connected between the CMOS image collector and the A/D conversion module, and is used for amplifying the image signals collected by the CMOS image collector and converting the image signals into digital signals through the A/D conversion module.

3. A dermoscopic image acquisition circuit according to claim 2 wherein: the signal amplification module comprises an operational amplifier X1, a resistor R3 and a resistor R4, wherein the in-phase end of the operational amplifier X1 is electrically connected with the output end of the CMOS image collector after passing through the resistor R1, the reverse-phase end of the operational amplifier X1 is connected with a reference voltage Vref after passing through a resistor R2, and the output end of the operational amplifier X1 is electrically connected with the input end of the A/D conversion module.

4. The dermatoscope image acquisition circuit of claim 1, wherein: and the reset end of the main control MCU is connected with a reset switch S3.

5. The dermatoscope image acquisition circuit of claim 1, wherein: and the output end of the main control MCU is electrically connected with a memory.

6. The dermatoscope image acquisition circuit of claim 1, wherein: the input end of the main control MCU is electrically connected with a temperature sensor, the output end of the main control MCU is electrically connected with a protection unit, the temperature sensor is used for detecting the temperature of the CMOS image collector, and the protection unit is used for disconnecting the power supply voltage of the CMOS image collector.

7. The dermatoscope image acquisition circuit of claim 6, wherein: the protection unit comprises an MOS tube M3, the grid electrode of the MOS tube M3 is electrically connected with the output end of the main control MCU, the drain electrode of the MOS tube M3 is connected with the power supply voltage of the CMOS image collector, and the source electrode of the MOS tube M3 is electrically connected with the voltage end of the CMOS image collector.