CN205913354U - A non-invasive blood glucose detection device - Google Patents

Abstract

The utility model provides a there is not blood sugar detection device of wound, include: the device comprises an infrared illumination light source module, a Sagnac interference optical module without a moving mirror, a convergent objective, an infrared photoelectric sensor array module and a data processing and analyzing module; the infrared illumination light source module irradiates a detected human body detection part to obtain a light beam with the detected human body blood sugar concentration; the light beam forms an optical interference signal through a Sagnac interference optical module without a movable mirror; the optical interference signal is focused by the infrared objective lens and then captured by the infrared photoelectric sensor array module, and the focused optical interference signal is converted into a digital electric signal with interference information; the data processing and analyzing module carries out Fourier transform on the digital electric signal to obtain a spectral distribution signal, and carries out signal analysis on the spectral distribution signal to obtain the blood glucose concentration information of the detected human body. The noninvasive blood glucose detection device has the characteristics of complete noninvasive property, no side effect, real-time rapidness, accurate result and the like.

Description

A non-invasive blood glucose detection device

technical field

The utility model relates to the fields of optical engineering and medical testing instruments, in particular to a non-invasive blood sugar testing device.

Background technique

Blood sugar is an important indicator of human health, and changes in blood sugar can be used as an important reference for disease prevention and diagnosis. People need to do regular testing of their own blood sugar, especially diabetics, need to have a real-time and accurate grasp of their own blood sugar. At present, the relatively mature measurement methods are biochemical blood glucose measurement and minimally invasive blood glucose detection, both of which require blood sampling of human blood, which brings pain to the body, and the detection operation is relatively complicated, which has great impact on the patient's psychological pain and disease. Infection brings disadvantages. Non-invasive blood glucose detection uses the effect of low-frequency ultrasound on the skin to measure and infer the blood glucose concentration by collecting a small amount of skin permeate, but the accuracy of this method is not high to a certain extent.

In recent years, with the development of optical technology in the field of medical testing, many non-invasive blood sugar detection methods based on optical technology have appeared, such as the use of near-infrared light to detect various signs and indicators such as human blood sugar and hemoglobin. However, due to near-infrared light The transmission is strong, the signal-to-noise ratio obtained is not high, and the detection has certain limitations; or, some calculate the attenuation coefficient of the human body medium through the difference of the light intensity of the near-infrared light, so as to infer the blood sugar level of the human body , however, when using this method to infer the blood glucose concentration, it is easy to be interfered by the outside world, and requires high processing technology and operation.

Utility model content

The technical problem to be solved by the utility model is to provide a non-invasive blood sugar detection device, which can quickly and accurately measure the blood sugar concentration information of the human body.

The technical solution adopted by the utility model is that the non-invasive blood sugar detection device includes: an infrared illumination light source module, a non-moving mirror Sagnac interference optical module, a converging objective lens, an infrared photoelectric sensor array module, and a data processing and analysis module;

The infrared illumination light source module is used to irradiate the detected part of the human body to obtain the light beam with the blood sugar information of the measured human body; the Sagnac interference optical module without moving mirror is used to carry out the sub-amplitude interference of the light beam to obtain the blood sugar information of the measured human body the optical interference signal; the converging objective lens is used to focus the optical interference signal; the infrared photoelectric sensor array module is located on the focal plane of the converging objective lens, and the infrared photoelectric sensor array module is used to convert the focused optical interference signal It is a digital electrical signal; the data processing and analysis module is used to perform Fourier transform on the digital electrical signal to obtain a spectral distribution signal, and perform signal analysis on the spectral distribution signal to obtain blood glucose concentration information of the measured human body.

Further, the infrared illumination light source module uses transmitted infrared light and/or diffusely reflected infrared light as the illumination light source.

Further, the mirrorless Sagnac interference optical module includes: a beam receiving end, a transflective beam splitter, a first reflecting surface, a second reflecting surface, and a beam emitting end;

The mirrorless Sagnac interference optical module is used to perform sub-amplitude interference on the light beam to obtain the optical interference signal of the blood glucose information of the measured human body, including:

The light beam is transmitted to the transflective beam splitter through the beam receiving end; the transflective beam splitter divides the light beam into a transmitted beam and a reflected beam; the transmitted beam passes through the first A reflective surface is reflected to the second reflective surface, and then reflected to the transflective beam splitter through the second reflective surface, and interferes with the reflected light beam on the transflective beam splitter, The optical interference signal of blood glucose information of the measured human body is obtained; the optical interference signal is emitted from the light beam emitting end.

Further, the semi-transparent and semi-reflective beam splitter is coated with a semi-transparent and semi-reflective film working in the infrared band; the first reflective surface and the second reflective surface are coated with an infrared reflective film for suppressing visible light and ultraviolet rays. Light.

Further, the infrared photoelectric sensor array module includes an infrared detector sensor, and the wavelength detectable by the infrared detector sensor corresponds to the wavelength of the infrared light used as the illumination light source in the infrared illumination light source module.

Further, the center of the beam emitting end, the center of the converging objective lens and the center of the infrared photoelectric sensor array module are placed on the same straight line.

Further, the infrared photoelectric sensor array module is connected to the data processing and analysis module through a universal serial bus.

By adopting the above-mentioned technical scheme, the utility model has at least the following advantages:

The non-invasive blood sugar detection device described in the utility model can obtain the spectral absorption information with the blood sugar concentration of the measured human body in real time by irradiating the detected human body detection parts with infrared multi-band beams, successively through the non-moving mirror Sagnac interference optical module and Fu The Lie transform performs real-time spectral analysis on the spectral absorption information, so that the blood sugar concentration information of the measured human body can be quickly and accurately obtained; the non-invasive blood sugar detection device has completely non-invasive, no side effects, no consumables, real-time fast, accurate results, etc. features.

Description of drawings

FIG. 1 is a schematic diagram of the composition and structure of a non-invasive blood glucose detection device according to the first embodiment of the present invention;

Fig. 2 is a schematic diagram of the composition and structure of the non-invasive blood glucose detection device of the second embodiment of the present invention;

FIG. 3 is a schematic diagram of the composition and structure of a non-invasive blood glucose detection device according to a third embodiment of the present invention.

detailed description

In order to further explain the technical means and effects of the utility model to achieve the intended purpose, the utility model will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

In the first embodiment of the present utility model, a non-invasive blood sugar detection device, as shown in Figure 1, includes the following components:

Infrared illumination light source module 1, mirrorless Sagnac interference optical module 2, converging objective lens 3, infrared photoelectric sensor array module 4, and data processing and analysis module 5;

The infrared illumination light source module 1 is used to irradiate the detection part 6 of the human body to obtain the light beam with the blood sugar information of the human body to be measured; The optical interference signal of human blood sugar information; the converging objective lens 3 is used to focus the optical interference signal; the infrared photoelectric sensor array module 4 is located on the focal plane of the converging objective lens, and the infrared photoelectric sensor array module 4 is used to focus the focused The optical interference signal is converted into a digital electrical signal; the data processing and analysis module 5 is used to perform Fourier transform on the digital electrical signal to obtain a spectral distribution signal, and perform signal analysis on the spectral distribution signal to obtain the measured human body Blood glucose concentration information;

The data processing and analysis module 5 can be implemented by a personal PC, and the data processing and analysis process is completed by existing signal analysis software installed in the personal PC, so it will not be described in detail here.

Specifically, the infrared illumination light source module 1 uses transmitted infrared light and/or diffuse infrared light as an illumination light source.

Mirrorless Sagnac interference optical module 2, including the following components: beam receiving end 7, transflective beam splitter 8, first reflective surface 9, second reflective surface 10, and beam exit 11; The beam plate 8 is coated with a semi-transparent and semi-reflective film working in the infrared band; the first reflective surface 9 and the second reflective surface 10 are coated with an infrared reflective film for suppressing visible light and ultraviolet light.

Further, the non-moving mirror Sagnac interference optical module 2 is used to perform sub-amplitude interference on the light beam to obtain the optical interference signal of the blood glucose information of the measured human body, specifically including:

The light beam is transmitted to the transflective beam splitter 8 through the beam receiving end 7; the transflective beam splitter 8 divides the light beam into a transmitted beam and a reflected beam; the transmitted beam passes through The first reflective surface 9 is reflected to the second reflective surface 10, and then reflected to the transflective beam splitter 8 through the second reflective surface 10, and interferes with the reflected light beam on the transflective beam splitter 8, The optical interference signal of blood glucose information of the measured human body is obtained; the optical interference signal is emitted from the beam emitting end 11 .

The infrared photoelectric sensor array module 4 includes an infrared detector sensor, the wavelength of which can be detected by the infrared detector sensor corresponds to the wavelength of the infrared light used as the irradiation light source in the infrared illumination light source module 1 .

The center of the beam emitting end 11, the center of the converging objective lens 3 and the center of the infrared photoelectric sensor array module 4 are placed on the same straight line.

The infrared photoelectric sensor array module 4 is connected with the data processing and analysis module 5 through a universal serial bus.

The second embodiment of the utility model is a non-invasive blood sugar detection device, as shown in Figure 2, which includes the following components:

Transmission infrared light source 1, mirrorless Sagnac interference optical module 2, infrared objective lens 3, silicon CCD array sensor 4 and microcomputer 5 with algorithm software;

Through the transmission infrared light source 1 to irradiate the detected human body detection part 6, the light beam with the blood sugar information of the measured human body is transmitted; the light beam passes through the mirrorless Sagnac interference optical module 2 to form an optical interference signal; the optical interference signal passes through After the infrared objective lens 3 is focused, it is captured by the silicon CCD array sensor 4 located on the focal plane of the infrared objective lens 3; the silicon CCD array sensor 4 converts the focused optical interference signal into a digital electrical signal with interference information; with algorithm software The microcomputer 5 performs Fourier transform on the digital electrical signal to obtain a spectral distribution signal, and performs signal analysis on the spectral distribution signal to obtain blood glucose concentration information of the measured human body.

Specifically, the transmitted infrared light source 1 uses a tungsten lamp as the irradiation light source, and has a continuous emission spectrum in the infrared working spectrum with a wavelength of 0.8 μm to 1 μm; the transmitted infrared light source 1 has a strong penetrating power to human tissue and can be fully absorbed.

Mirrorless Sagnac interference optical module 2, including the following components: beam receiving end 7, transflective beam splitter 8, first reflective surface 9, second reflective surface 10, and beam emitting end 11; first reflective surface 9 Both the second reflective surface 10 and the transflective beam splitter 8 can work under the transmitted infrared light with a wavelength of 0.8 μm to 1 μm; Reflective film: the first reflective surface 9 and the second reflective surface 10 are coated with an infrared reflective film for suppressing visible light and ultraviolet light.

Further, the optical beam passes through the mirrorless Sagnac interference optical module 2 to form an optical interference signal, including:

The light beam is transmitted to the transflective beam splitter 8 through the beam receiving end 7; the transflective beam splitter 8 divides the light beam into a transmitted beam and a reflected beam; the transmitted beam passes through The first reflective surface 9 is reflected to the second reflective surface 10, and then reflected to the transflective beam splitter 8 through the second reflective surface 10, and interferes with the reflected light beam on the transflective beam splitter 8, The optical interference signal of blood glucose information of the measured human body is obtained; the optical interference signal is emitted from the beam emitting end 11 .

Place the center of the transmission infrared light source 1, the center of the measured human body detection part 6 and the center of the beam receiving end 7 on the same straight line; the center of the beam emitting end 11, the center of the infrared objective lens 3 and the center of the silicon CCD array sensor 4 placed on the same straight line.

The silicon CCD array sensor 4 is connected with a microcomputer 5 with algorithm software through a universal serial bus.

The third embodiment of the utility model is a non-invasive blood glucose detection device, as shown in Figure 3, which specifically includes the following components:

Diffuse reflection infrared light source 1, non-moving mirror Sagnac interference optical module 2, infrared objective lens 3, mercury cadmium telluride infrared detector line array sensor 4 and microcomputer 5 with algorithm software;

Irradiate the detected human body detection part 6 through the diffuse reflection infrared light source 1, and diffusely reflect the light beam with the blood sugar information of the measured human body; the light beam passes through the mirrorless Sagnac interference optical module 2 to form an optical interference signal; the optical interference After the signal is focused by the infrared objective lens 3, it is captured by the mercury cadmium telluride infrared detector line sensor 4 located on the focal plane of the infrared objective lens 3; the mercury cadmium telluride infrared detector line sensor 4 converts the focused optical interference signal into a band A digital electrical signal with interference information; a microcomputer 5 with algorithm software performs Fourier transform on the digital electrical signal to obtain a spectral distribution signal, and performs signal analysis on the spectral distribution signal to obtain the blood glucose concentration of the measured human body information.

Specifically, the diffuse reflection infrared light source 1 adopts an integrating sphere diffuse reflection infrared light source, and has a continuous emission spectrum in the infrared working band with a wavelength of 7 μm to 12 μm; the penetration ability of the diffuse reflection infrared light source 1 is very weak, so the use of superficial tissue The reflection information is detected.

Mirrorless Sagnac interference optical module 2, including the following components: beam receiving end 7, transflective beam splitter 8, first reflective surface 9, second reflective surface 10, and beam emitting end 11; first reflective surface 9 And the second reflective surface 10 is a reflector that can work in the thermal infrared band; the transflective beam splitter 8 is coated with a semi-transparent and semi-reflective film that works in the infrared band; the first reflective surface 9 and the second reflective surface 10 Coated with an infrared reflective coating for suppression of visible and ultraviolet light.

Further, the optical beam passes through the mirrorless Sagnac interference optical module 2 to form an optical interference signal, including:

The light beam is transmitted to the transflective beam splitter 8 through the beam receiving end 7; the transflective beam splitter 8 divides the light beam into a transmitted beam and a reflected beam; the transmitted beam passes through The first reflective surface 9 is reflected to the second reflective surface 10, and then reflected to the transflective beam splitter 8 through the second reflective surface 10, and interferes with the reflected light beam on the transflective beam splitter 8, The optical interference signal of blood glucose information of the measured human body is obtained; the optical interference signal is emitted from the beam emitting end 11 .

The center of the beam emitting end 11, the center of the infrared objective lens 3 and the center of the HgCdTe infrared detector line sensor 4 are placed on the same straight line.

The mercury cadmium telluride infrared detector line array sensor 4 is connected with the microcomputer 5 with algorithm software through a universal serial bus.

The non-invasive blood sugar detection device introduced in the embodiment of the utility model can obtain the spectral absorption information with the blood sugar concentration of the measured human body in real time by irradiating the detection part of the human body with infrared multi-band beams, and successively pass through the non-moving mirror Sagnac interference optical module And the Fourier transform performs real-time spectral analysis on the spectral absorption information, so as to quickly and accurately obtain the blood sugar concentration information of the measured human body; the non-invasive blood sugar detection device has completely non-invasive, no side effects, no consumables, real-time fast, and results Accurate and other characteristics.

Through the description of the specific implementation, it should be possible to gain a deeper and more specific understanding of the technical means and effects of the utility model to achieve the intended purpose. new restrictions.

Claims (7)

1. a kind of noninvasive dynamics monitoring device is it is characterised in that include: infrared illumination source module, no index glass sagnac interfere Optical module, convergence object lens, infrared photoelectric sensor array module and data process＆analysis module；

Infrared illumination source module is used for irradiating tested human detection position, obtains the light wave with tested human body blood glucose information Bundle；No index glass sagnac interferometric optical module is used for for described light beam carrying out amplitude-splittine interference, obtains tested blood sugar for human body letter The optical interference signal of breath；Assemble object lens to be used for being focused described optical interference signal；Infrared photoelectric sensor array mould Block is located on the focal plane of described convergence object lens, and described infrared photoelectric sensor array module is used for the optical interference after focusing on Signal is converted to digital electric signal；Data process＆analysis module is used for for described digital electric signal carrying out Fourier transformation, obtains To spectral distribution signal, and signal analysis are carried out to described spectral distribution signal, obtain the blood sugar concentration information of tested human body.

2. noninvasive dynamics monitoring device according to claim 1 is it is characterised in that described infrared illumination source module adopts Transmitted infrared light and/or diffuse-reflectance infrared light are as radiation source.

3. noninvasive dynamics monitoring device according to claim 1 is it is characterised in that described no index glass sagnac interferometric optical Module, comprising: beam reception end, semi-transparent semi-reflecting beam-splitting board, the first reflecting surface, the second reflecting surface and light beam ejecting end；

Described no index glass sagnac interferometric optical module is used for for described light beam carrying out amplitude-splittine interference, obtains tested human body blood The optical interference signal of sugared information, comprising:

Described light beam is launched to semi-transparent semi-reflecting beam-splitting board by beam reception end；Described semi-transparent semi-reflecting beam-splitting board is by described light wave Bundle is divided into through Beam bundle and a branch of the reflected beams；Described transmitted light beam through the first reflective surface to the second reflecting surface, then Through described second reflective surface to described semi-transparent semi-reflecting beam-splitting board, and with described the reflected beams in described semi-transparent semi-reflecting beam-splitting board On interfere, obtain the optical interference signal of tested human body blood glucose information；Described optical interference signal projects end-fire from light beam Go out.

4. noninvasive dynamics monitoring device according to claim 3 is it is characterised in that be coated with described semi-transparent semi-reflecting beam-splitting board It is operated in the semi-transparent semi-reflecting film of infrared band；It is coated with infrared reflection film, for pressing down on described first reflecting surface and the second reflecting surface Visible ray processed and ultraviolet light.

5. noninvasive dynamics monitoring device according to claim 2 is it is characterised in that described infrared photoelectric sensor array mould Block comprises Infrared Detectorss sensor, the wavelength that described Infrared Detectorss sensor can detect and described infrared illumination source In module, the wavelength of the infrared light as radiation source is corresponding.

6. noninvasive dynamics monitoring device according to claim 3 it is characterised in that by the center of described light beam ejecting end, The center at the described center and described infrared photoelectric sensor array module assembling object lens is positioned on same straight line.

7. noninvasive dynamics monitoring device according to claim 6 is it is characterised in that described infrared photoelectric sensor array mould Block is connected by USB (universal serial bus) with described data process＆analysis module.