A non-invasive and safe skin collagen detection system and method

Abstract

The present invention discloses a non-invasive and safe detection system for skin collagen, which includes a transmitting module, a receiving module and a microprocessor. The infrasound frequency band scanning modulation wave generator unit and the ultrasonic frequency band carrier wave generator unit in the transmitting module are both connected to the microprocessor. The infrasound frequency band scanning modulation wave generator unit and the ultrasonic frequency band carrier wave generator unit are both connected to the ultrasonic wave modulation driving circuit unit. The ultrasonic wave modulation driving circuit unit is connected to the ultrasonic wave transmitting head through a charge pump bootstrap boosting circuit. The receiving module includes a signal processing unit and an ultrasonic wave receiving head. The ultrasonic wave receiving head is connected to the microprocessor through the signal processing unit. The present invention also discloses a non-invasive and safe detection method for skin collagen. By adopting the above non-invasive and safe detection system for skin collagen and its method, the structure is simple, non-contact detection is adopted, the skin itself is not damaged, the detection is convenient and easy to implement, the cost is low, and it is safe without worry.

Description

Technical Field

[0001] The present invention relates to the technical field of skin detection, and in particular to a non-invasive and safe skin collagen detection system and method thereof. Background Art

[0002] Collagen is a very important connective tissue protein in human skin. The collagen fibers formed by collagen, together with elastic fibers in the dermis, form a reticular structure that can support the skin structure, maintain skin elasticity and toughness, retain skin moisture, and make the skin smoother, more delicate, and more elastic. It is one of the very important proteins for skin beauty. Therefore, the detection of skin collagen is one of the important detections in skin detection. According to the traditional skin collagen test principle, collagen has the characteristic of autofluorescence. Due to the differences in the types and cross-linking states of collagen structures, the fluorescence spectrum or intensity will change. Therefore, the content and structure of skin collagen can be determined according to the changes in the skin fluorescence spectrum state. However, in the fluorescence optical detection system among them, the equipment belongs to complex, expensive, and cumbersome precision instruments, with high costs. Summary of the Invention

[0003] The purpose of the present invention is to provide a non-invasive and safe skin collagen detection system and method thereof, which has a simple structure, adopts non-contact detection, does not damage the skin itself, is convenient and easy to detect, has low costs, and is safe.

[0004] To achieve the above purpose, the present invention provides a non-invasive and safe skin collagen detection system, including a transmitting module, a receiving module, and a microprocessor.

[0005] The transmitting module includes a subsonic frequency band scanning modulation wave generator unit, an ultrasonic frequency band carrier wave generator unit, an ultrasonic wave modulation driving circuit unit, a charge pump bootstrap boosting circuit, and an ultrasonic wave transmitting head. The ultrasonic wave transmitting head is connected to the charge pump bootstrap boosting circuit, the charge pump bootstrap boosting circuit is connected to the ultrasonic wave modulation driving circuit unit, both the subsonic frequency band scanning modulation wave generator unit and the ultrasonic frequency band carrier wave generator unit are connected to the ultrasonic wave modulation driving circuit unit, and both the subsonic frequency band scanning modulation wave generator unit and the ultrasonic frequency band carrier wave generator unit are connected to the microprocessor.

[0006] The receiving module includes a signal processing unit and an ultrasonic wave receiving head. The ultrasonic wave receiving head is connected to the signal processing unit, and the signal processing unit is connected to the microprocessor.

[0007] Preferably, the signal processing unit includes an amplification, filtering and demodulation circuit and a true RMS conversion circuit. The amplification, filtering and demodulation circuit is connected to the ultrasonic receiver, the amplification, filtering and demodulation circuit is connected to the true RMS conversion circuit, and the true RMS conversion circuit is connected to the microprocessor.

[0008] Preferably, the microprocessor is provided with a communication interface.

[0009] Preferably, the infrasound frequency band scanning modulation wave generator unit synthesizes a digital synthesis wave in the infrasound frequency band with a frequency of 0.5 - 20 Hz to modulate the high-frequency ultrasonic carrier wave. The waveform of the digital synthesis wave is a sine wave, a square wave or a triangular sawtooth wave.

[0010] Preferably, the ultrasonic frequency band carrier wave generator unit is used to modulate a carrier electromagnetic oscillation with a frequency of 40 KHz. The carrier electromagnetic oscillation is used to drive the ultrasonic modulation driving circuit unit to emit ultrasonic energy flux modulated by the digital synthesis wave in the infrasound frequency band.

[0011] A method for detecting skin collagen includes the following steps:

[0012] Step S1: Determine the position of the test point;

[0013] Step S2: The ultrasonic transmitter emits digital synthesis waves with different frequencies at a fixed frequency interval in a scanning manner to the test point, and at the same time, the ultrasonic receiver receives the reflection data at different transmission frequencies;

[0014] Step S3: Assemble the reflection data into a data curve of modulation spectrum and reflection intensity, and determine the modulation frequency corresponding to the peak depression of the data curve as the resonance frequency;

[0015] Step S4: Calculate the value of the collagen content according to the resonance frequency.

[0016] Preferably, in step S2, the infrasound frequency band scanning modulation wave generator unit synthesizes a digital synthesis wave in the infrasound frequency band with a frequency of 0.5 - 20 Hz, and gradually increases the frequency of the digital synthesis wave at an interval frequency of 0.1 Hz for scanning emission until the highest synthesis frequency of the set digital synthesis wave is reached. At the same time, the ultrasonic receiver performs scanning reception of the reflection data. The emission data is amplified, filtered and converted into true RMS value by the signal processing unit and then input into the microprocessor.

[0017] Preferably, the relationship between the resonance frequency and the collagen content is as follows:

[0018] f = k * h 2

[0019] Wherein, f is the resonance frequency, k is the proportionality coefficient, and h is the collagen content.

[0020] Therefore, the skin collagen non-invasive safety detection system and method with the above structure of the present invention have the following beneficial effects:

[0021] (1) The skin collagen non-invasive safety detection system of the present invention has a simple structure and low cost.

[0022] (2) At the same time, the skin collagen detection method of the present invention adopts non-contact detection, does not damage the skin itself, and is convenient and easy to operate.

[0023] The technical solution of the present invention will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of a skin collagen non-invasive safety detection system of the present invention;

[0025] Figure 2 It is a two-dimensional coordinate scanning map of the reflection data of the present invention.

[0026] REFERENCE SIGNS

[0027] 1. Infrasound frequency band scanning modulation wave generator unit; 2. Ultrasonic frequency band carrier generator unit; 3. Ultrasonic wave modulation drive circuit unit; 4. Charge pump bootstrap boost circuit; 5. Ultrasonic wave transmitting head; 6. Ultrasonic wave receiving head; 7. Amplification filtering demodulation circuit; 8. True RMS conversion circuit; 9. Microprocessor; 10. Communication interface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Embodiment

[0029] Figure 1 It is a schematic structural diagram of a skin collagen non-invasive safety detection system of the present invention. As shown in the figure, a skin collagen detection system includes a transmitting module, a receiving module, and a microprocessor 9.

[0030] The transmitting module includes an infrasound frequency band scanning modulation wave generator unit 1, an ultrasonic frequency band carrier generator unit 2, an ultrasonic wave modulation driving circuit unit 3, a charge pump bootstrap boost circuit 4, and an ultrasonic wave transmitting head 5. The ultrasonic wave transmitting head 5 is connected to the charge pump bootstrap boost circuit 4, the charge pump bootstrap boost circuit 4 is connected to the ultrasonic wave modulation driving circuit unit 3, both the infrasound frequency band scanning modulation wave generator unit 1 and the ultrasonic frequency band carrier generator unit 2 are connected to the ultrasonic wave modulation driving circuit unit 3. The infrasound frequency band scanning modulation wave generator unit 1 is used to generate an infrasound frequency band digital synthesis wave from 0.5 Hz to 20 Hz. The waveform of the digital synthesis wave can be a sine wave, a square wave, or a triangular sawtooth wave, and the infrasound frequency band digital synthesis wave from 0.5 Hz to 20 Hz is used as a baseband modulation signal. The ultrasonic frequency band carrier generator unit 2 is used to modulate a carrier electromagnetic oscillation with a standard frequency of 40 KHz. The carrier electromagnetic oscillation is used to drive the ultrasonic wave modulation driving circuit unit 3 to emit ultrasonic energy flux modulated by the digital synthesis wave in the infrasound frequency band outward. Both the infrasound frequency band scanning modulation wave generator unit 1 and the ultrasonic frequency band carrier generator unit 2 are connected to the microprocessor 9. The microprocessor 9 is used to control the infrasound frequency band digital synthesis wave to gradually increase at a frequency interval of 0.1 Hz, and perform a scanning emission of ultrasonic energy flux with different frequencies at the test point. In view of the fact that infrasound wave energy is harmful and dangerous to the human body, all the vibration wave energy involved in the present invention is limited within the intrinsically safe level range to ensure the safety of system use.

[0031] The receiving module includes a signal processing unit and an ultrasonic wave receiving head 6. The ultrasonic wave receiving head 6 is connected to the signal processing unit. The signal processing unit includes an amplification filtering demodulation circuit 7 and a true effective conversion circuit 8. The amplification filtering demodulation circuit 7 is connected to the ultrasonic wave receiving head 6, the amplification filtering demodulation circuit 7 is connected to the true effective conversion circuit 8, and the true effective conversion circuit 8 is connected to the microprocessor 9. The reflected data received by the ultrasonic wave receiving head 6 is amplified, filtered, and truly effectively converted and then input into the microprocessor for storage, calculation, and transmission, and the two-dimensional coordinate scanning map of the reflected data is drawn and presented. As Figure 2 shown, it is a graph with two high peaks sandwiching a low depression, and the frequency corresponding to the lowest position of the amplitude depression is exactly an absorption peak of a modulated ultrasonic wave corresponding to the measured skin. This frequency is the resonance frequency corresponding to the human skin, and the energy corresponding to this frequency ultrasonic wave is selectively resonantly absorbed by the human skin. As a biological macromolecule, collagen has low strength. Scientific research shows that the resonance frequency of collagen is almost proportional to the square of its content value. The resonance frequency can be measured by the absorption peak scanning method, and thus the collagen content of the measured skin can be determined. The microprocessor 9 is provided with a communication interface 10 for connecting to an upper computer for display and other calculations.

[0032] A non-invasive and safe detection method for skin collagen based on the above system, comprising the following steps:

[0033] Step S1: Determine the position of the test point.

[0034] Step S2: The ultrasonic transmitter 5 emits digital composite waves of different frequencies at a fixed frequency interval in a scanning manner to the test point, and at the same time, the ultrasonic receiver 6 receives the reflection data at different transmission frequencies. The infrasonic frequency band scanning modulation wave generator unit 1 synthesizes digital composite waves in the infrasonic frequency band with a frequency of 0.5 - 20 Hz, and emits them in a scanning manner by gradually increasing the frequency of the digital composite waves at an interval frequency of 0.1 Hz until reaching the highest synthesized frequency of the set digital composite wave. At the same time, the ultrasonic receiver 6 receives the reflection data in a scanning manner. The transmitted data is amplified, filtered, and subjected to true root mean square conversion by the signal processing unit and then input into the microprocessor 9.

[0035] Step S3: The microprocessor 9 aggregates the reflection data into a data curve of modulation spectrum and reflection intensity, and determines the modulation frequency corresponding to the peak depression of the data curve as the resonance frequency.

[0036] Step S4: Calculate the value of the collagen content according to the resonance frequency.

[0037] The relationship between the resonance frequency and the collagen content is as follows:

[0038] f = k * h 2

[0039] Wherein, f is the resonance frequency, k is the proportionality coefficient, and h is the collagen content.

[0040] Therefore, the present invention adopts a non-invasive and safe detection system and method for skin collagen with the above structure, which has a simple structure, adopts non-contact detection, does not damage the skin itself, is convenient and easy to operate, has low cost, and is safe.

[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A non-invasive and safe detection system for skin collagen, characterized in that: It includes a transmitting module, a receiving module, and a microprocessor. The transmitting module includes an infrasound frequency band scanning modulation wave generator unit, an ultrasonic frequency band carrier generator unit, an ultrasonic wave modulation driving circuit unit, a charge pump bootstrap boosting circuit, and an ultrasonic wave transmitting head. The ultrasonic wave transmitting head is connected to the charge pump bootstrap boosting circuit. The charge pump bootstrap boosting circuit is connected to the ultrasonic wave modulation driving circuit unit. Both the infrasound frequency band scanning modulation wave generator unit and the ultrasonic frequency band carrier generator unit are connected to the ultrasonic wave modulation driving circuit unit. Both the infrasound frequency band scanning modulation wave generator unit and the ultrasonic frequency band carrier generator unit are connected to the microprocessor. The infrasound frequency band scanning modulation wave generator unit synthesizes a digital synthesis wave in the infrasound frequency band with a frequency of 0.5 - 20 Hz to modulate the high-frequency ultrasonic carrier. The ultrasonic frequency band carrier generator unit is used to modulate a carrier electromagnetic oscillation with a frequency of 40 KHz. The carrier electromagnetic oscillation is used to drive the ultrasonic wave modulation driving circuit unit to emit ultrasonic energy flow modulated by the digital synthesis wave in the infrasound frequency band outward. The receiving module includes a signal processing unit and an ultrasonic wave receiving head. The ultrasonic wave receiving head is connected to the signal processing unit. The signal processing unit is connected to the microprocessor.

2. The non-invasive and safe skin collagen detection system according to claim 1, wherein: The signal processing unit includes an amplification filtering demodulation circuit and a true effective conversion circuit. The amplification filtering demodulation circuit is connected to the ultrasonic wave receiving head. The amplification filtering demodulation circuit is connected to the true effective conversion circuit. The true effective conversion circuit is connected to the microprocessor.

3. The non-invasive and safe skin collagen detection system according to claim 1, characterized in that: The microprocessor is provided with a communication interface.

4. The non-invasive and safe skin collagen detection system according to claim 1, characterized in that: The waveform of the digital synthesis wave is a sine wave, a square wave, or a triangular sawtooth wave.

5. The detection method of a non-invasive and safe detection system for skin collagen according to any one of claims 1-4, characterized in that, It includes the following steps: Step S1: Determine the position of the test point. Step S2: The ultrasonic wave transmitting head emits digital synthesis waves with different frequencies at a fixed frequency interval in a scanning manner to the test point, and at the same time, the ultrasonic wave receiving head receives the reflection data at different emission frequencies. In step S2, the infrasound frequency band scanning modulation wave generator unit synthesizes a digital synthesis wave in the infrasound frequency band with a frequency of 0.5 - 20 Hz, and gradually increases the frequency of the digital synthesis wave at an interval frequency of 0.1 Hz for scanning emission until reaching the highest synthesis frequency of the set digital synthesis wave. At the same time, the ultrasonic wave receiving head performs scanning reception of the reflection data. The emission data is input into the microprocessor after being amplified, filtered, and true root mean square value converted by the signal processing unit. Step S3: Assemble the reflection data into a data curve of the modulation spectrum and the reflection intensity, and determine that the modulation frequency corresponding to the peak depression of the data curve is the resonance frequency. Step S4: Calculate the value of the collagen content according to the resonance frequency. The relationship between the resonance frequency and the collagen content is as follows: f = k * h 2 Where, f is the resonance frequency, k is the proportionality coefficient, and h is the collagen content.

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