CN105425196B - A kind of auto testing instrument being applied to intelligent electric meter production line - Google Patents

Abstract

The invention relates to an automatic tester applied to a smart meter production line. The tester includes a CF memory card, facial skin color detection equipment, blood sugar detection equipment, blood oxygen saturation detection equipment and an AVR32 chip. The CF memory card pre-stores Four skin color mean intervals and four blood oxygen saturation intervals are provided. The blood sugar detection device is used to detect the blood sugar data of the person being tested. The AVR32 chip combines the facial skin color detection device and the blood oxygen saturation The detection results of the detection device are matched with the contents of the CF memory card to respectively determine the skin color level and blood oxygen saturation level of the tested person. Through the present invention, it is possible to more accurately analyze and pre-warn multiple physiological parameters of the measured person.

Description

An automatic tester applied to the production line of smart meters

technical field

The invention relates to the field of electric meter production, in particular to an automatic tester applied to a smart electric meter production line.

Background technique

The work intensity of the smart meter production line is very high, and the personnel are often in high-intensity labor, so their physical condition is often sub-healthy. The blood oxygen saturation of normal human arterial blood is 98%, and that of venous blood is 75%. The metabolic process of the human body is a biological oxidation process, and the oxygen needed in the metabolic process enters the human blood through the respiratory system, combines with the hemoglobin (Hb) in the blood red blood cells to form oxyhemoglobin (HbO ₂ ), and then transports it to the human body In each part of the tissue cells. The ability of blood to carry and transport oxygen is measured by blood oxygen saturation. It can be seen that real-time monitoring of blood oxygen saturation is very important in clinical rescue.

The blood oxygen saturation measurement method in the prior art is mainly to first collect blood from the human body, and then use a blood gas analyzer to perform electrochemical analysis, measure blood oxygen partial pressure and calculate blood oxygen saturation. This method is cumbersome and cannot be monitored continuously. There are still some finger cot photoelectric sensors in the prior art. When measuring, you only need to put the sensor on the human finger, use the finger as a transparent container for hemoglobin, and use red light with a wavelength of 660nm and near-infrared light with a wavelength of 940nm as the incident light. The light source measures the intensity of light transmission through the tissue bed to calculate hemoglobin concentration and oxygen saturation.

However, the blood oxygen saturation detection schemes in the prior art all have the following defects: only blood oxygen saturation can be detected, and the detection object is relatively single; the detection mechanism is backward, the structure redundancy is too high, and the accuracy cannot meet the increasing Accuracy requirements; most importantly, the detection mechanism of blood oxygen saturation is unique, only one factor can be used to determine blood oxygen saturation, and the detection process is not scientific enough.

Therefore, the present invention proposes an automatic tester applied to the smart meter production line, which can improve the structure of the outdated blood oxygen saturation detection instrument, integrate blood glucose detection into blood oxygen saturation detection, and broaden the range of physiological parameters detected , improve the detection accuracy of blood oxygen saturation, in addition, it can also combine photoelectric sensing technology and image recognition technology to determine the concentration of blood oxygen saturation, thereby improving the detection effect of blood oxygen saturation instruments as a whole.

Contents of the invention

In order to solve the technical problems existing in the prior art, the present invention provides an automatic tester applied to the smart meter production line, optimizes the structure of the current blood oxygen saturation detection instrument, integrates blood sugar detection into the blood oxygen saturation detection, and improves The detection accuracy of blood oxygen saturation, at the same time, using targeted image recognition technology to identify the skin color of the tested person, using skin color as one of the factors for blood oxygen saturation detection, makes the detection result of blood oxygen saturation less sensitive Interference by a single factor.

According to one aspect of the present invention, an automatic tester applied to a smart meter production line is provided, the tester includes a CF memory card, facial skin color detection equipment, blood sugar detection equipment, blood oxygen saturation detection equipment and an AVR32 chip, the The CF memory card pre-stores four kinds of skin color mean ranges and four kinds of blood oxygen saturation ranges, the blood sugar detection device is used to detect the blood sugar data of the person under test, and the AVR32 chip combines the facial skin color detection device and The detection results of the blood oxygen saturation detection device are respectively matched with the contents of the CF memory card to determine the skin color level and blood oxygen saturation level of the tested person respectively.

More specifically, in the automatic tester applied to the smart meter production line, it includes: a CF memory card, which pre-stores the preset proportional coefficient, preset skin color weight, preset blood oxygen saturation weight, preset trade-off The lower limit threshold, the preset trade-off upper limit threshold and the facial gray scale range are used to separate the human face in the image from the background. Oxygen saturation intervals, the four skin color mean intervals correspond to four skin color grades respectively, and the four blood oxygen saturation intervals correspond to four blood oxygen saturation grades respectively; the image acquisition device includes a hemispherical transparent cover, an auxiliary lighting sub equipment and a CMOS camera, the hemispherical transparent cover is used to accommodate the auxiliary lighting sub-equipment and the CMOS camera, the auxiliary lighting sub-equipment provides auxiliary lighting for the shooting of the CMOS camera, and the CMOS camera is The person's face is taken to obtain the facial image of the person under test; the facial skin color detection device includes an adaptive recursive filter sub-device, a median filter sub-device, a scale transformation enhancement sub-device, a target segmentation sub-device, a skin color level recognition sub-device and a skin color extraction sub-device The adaptive recursive filtering sub-equipment is connected with the CMOS camera, and is used for adopting adaptive recursive filtering processing on the facial image of the tested person to filter out the Gaussian noise in the facial image of the tested person, obtained from Adaptive recursive filtering image; the median filtering sub-equipment is connected to the adaptive recursive filtering sub-equipment for performing median filtering processing on the adaptive recursive filtering image to filter out the adaptive recursive filtering image The scattering component of the median filter image is obtained; the scale transformation enhancement sub-device is connected to the median filter sub-equipment, and is used to perform scale transformation enhancement processing on the median filter image, so as to enhance the relationship between the target and the background in the image Contrast, to obtain an enhanced image; the target segmentation sub-device is connected to the scale transformation enhancement sub-device and the CF memory card respectively, and all pixels whose pixel grayscale value in the enhanced image is within the facial grayscale range Composing a face sub-image, the face sub-image is separated from the background of the measured person's face image; the skin color extraction sub-device is connected with the target segmentation sub-device, and for the face sub-image, the brightness of all its pixels Accumulate and divide by the quantity of all its pixels to obtain the target skin color mean value; the skin color level recognition sub-device is connected with the skin color extraction sub-device and the CF memory card respectively, and the target skin color mean value and four kinds of skin color mean value intervals Matching, the skin color grade corresponding to the average skin color interval of the output match is output as the target skin color grade; the enzyme electrode sensor includes three electrodes, a reference electrode, a counter electrode and a working electrode, and glucose oxidase is fixed on the working electrode, wherein, when When the measured blood sample of the tested person drops on the testing area of the working electrode, the glucose oxidase fixed on the working electrode reacts chemically with the glucose in the measured blood sample, and the response current on the working electrode is related to the glucose concentration in the measured blood sample. linear relationship; the amplifying circuit is connected with the enzyme electrode sensor, It is used to receive and amplify the response current on the working electrode; the low-pass filter is connected to the amplifying circuit and is used to receive and filter out the high-frequency components in the response current; the light-emitting diode is set on the capillary of the fingertip of the person under test. The blood vessel position is connected with the light source driving circuit, and is used to alternately emit infrared light and red light based on the light emitting control signal sent by the light source driving circuit; the light source driving circuit has a built-in timer, and is used to send light emitting control signals to the light emitting diode; The converter is arranged on the fingertip of the measured person and is located at the relative position of the light-emitting diode, and is used to receive the infrared light and the red light transmitted through the capillaries of the fingertip of the measured person, and transmit the infrared light and the red light The light is converted into an analog current signal respectively to obtain an analog infrared photocurrent and an analog red photocurrent; a current-voltage conversion circuit is connected with the photoelectric converter for performing current-voltage conversion on the analog infrared photocurrent and the analog red photocurrent respectively , to respectively obtain the analog infrared light voltage and the analog red light voltage; the signal amplifier is connected with the current-voltage conversion circuit, and is used to respectively amplify the analog infrared light voltage and the analog red light voltage, so as to obtain the analog infrared light amplification voltage and Analog red light amplified voltage; signal detection circuit, connected with the signal amplifier, including a DC signal detection sub-circuit and an AC signal detection sub-circuit, used to detect the DC component and the AC component in the analog infrared light voltage as the first DC The voltage and the first AC voltage output are also used to detect the DC component and the AC component in the analog red light voltage as the second DC voltage and the second AC voltage output; the analog-to-digital converter is connected to the signal detection circuit, It is used to perform analog-to-digital conversion on the first DC voltage, the first AC voltage, the second DC voltage and the second AC voltage to obtain the first digitized DC voltage, the first digitized AC voltage, the second digitized DC voltage and the second digitized DC voltage. Digitized AC voltage; blood oxygen saturation calculation circuit, connected to the analog-to-digital converter, divides the ratio of the second digitized AC voltage to the second digitized DC voltage by the ratio of the first digitized AC voltage to the first digitized DC voltage to obtain Obtain the ratio factor of absorbed light, and calculate the blood oxygen saturation based on the ratio factor of absorbed light, wherein the blood oxygen saturation is linearly related to the ratio factor of absorbed light; connected to calculate the blood glucose concentration of the person under test based on the preset proportional coefficient and the filtered response current, wherein the preset proportional coefficient is a ratio that determines the linear relationship between the response current on the working electrode and the glucose concentration in the measured blood sample; The AVR32 chip is also connected with the blood oxygen saturation calculation circuit to obtain the blood oxygen saturation; the AVR32 chip sends a blood sugar concentration too high identification signal when the blood sugar concentration is at the preset blood glucose upper limit concentration, and when the blood glucose concentration When the blood sugar lower limit concentration is preset, an identification signal of low blood sugar concentration is issued; wherein, the AVR32 chip matches the calculated blood oxygen saturation with the four blood oxygen saturation intervals, and matches the successfully matched blood oxygen saturation The blood oxygen saturation level corresponding to the degree interval is used as the target Mark the blood oxygen saturation level; wherein, the AVR32 chip multiplies the target skin color level by the preset skin color weight, multiplies the target blood oxygen saturation level by the preset blood oxygen saturation weight, and adds the two products to obtain For the total trade-off value, when the total trade-off value is less than or equal to the preset trade-off lower limit threshold, a hypoxemia identification signal is issued, and when the total trade-off value is greater than or equal to the preset trade-off upper limit threshold, an blood oxygen excess identification signal is issued. More specifically, in the automatic tester applied to the smart meter production line: adaptive recursive filtering sub-device, median filtering sub-device, scale transformation enhancement sub-device, target segmentation sub-device, skin color level recognition sub-device and The skin color extraction sub-equipment is realized by using different CPLD chips respectively. More specifically, in the automatic tester applied to the smart meter production line, the tester also includes: a wireless communication interface, connected to the AVR32 chip, for wirelessly sending the identification signal of excessive blood sugar concentration, blood sugar An identification signal of low concentration, an identification signal of hypoxemia or an identification signal of excess blood oxygen. More specifically, in the automatic tester applied to the smart meter production line: the wireless communication interface is a mobile communication device or a Bluetooth communication device. More specifically, in the automatic tester applied to a smart meter production line: the mobile communication device is a GPRS mobile communication device, a 3G mobile communication device or a 4G mobile communication device.

Description of drawings

Embodiments of the present invention will be described below in conjunction with the accompanying drawings, wherein:

FIG. 1 is a structural block diagram of a first embodiment of an automatic tester applied to a smart meter production line according to the present invention.

Reference signs: 1CF memory card; 2 facial skin color detection equipment; 3 blood sugar detection equipment; 4 blood oxygen saturation detection equipment; 5AVR32 chip

detailed description

An embodiment of an automatic tester applied to a smart meter production line of the present invention will be described in detail below with reference to the accompanying drawings.

Hypoxia has a huge impact on the body. Such as the impact on CNS, liver and kidney function. The first thing that occurs in hypoxia is a compensatory acceleration of heart rate, increased heart rate and cardiac output, and the circulatory system compensates for the lack of oxygen content in a high dynamic state. At the same time, blood flow redistribution occurs, and brain and coronary vessels are selectively expanded to ensure sufficient blood supply. However, in severe hypoxic conditions, due to the accumulation of lactic acid in the subendocardium, the synthesis of ATP decreases, resulting in myocardial inhibition, resulting in bradycardia, premature contraction, decreased blood pressure and cardiac output, and arrhythmias such as ventricular fibrillation Even stop.

Due to the harmfulness of hypoxia to people's bodies, blood oxygen saturation detection instruments have always been one of the key research and development topics of medical instrument developers. However, the current blood oxygen saturation detection instrument has a single detection object, high circuit structure redundancy, and insufficient detection mechanism, resulting in poor blood oxygen saturation detection and unable to meet the current needs of patients and doctors.

For this reason, the present invention builds an automatic tester applied to the smart meter production line, optimizes the structure of the current blood oxygen saturation detection instrument, integrates blood glucose concentration detection into the blood oxygen saturation detection, and more importantly, adopts high The high-precision image recognition technology recognizes the skin color of the person being tested, and takes the skin color as one of the factors in the detection of blood oxygen saturation, and comprehensively considers the detection results of blood oxygen saturation, thereby improving the intelligence level of medical testing instruments.

Fig. 1 is a structural block diagram of the first embodiment of an automatic tester applied to a smart meter production line of the present invention, the tester includes a CF memory card, facial skin color detection equipment, blood sugar detection equipment, blood oxygen saturation detection equipment and an AVR32 chip, the CF memory card pre-stores four skin color mean intervals and four blood oxygen saturation intervals, the blood glucose detection device is used to detect the blood glucose data of the person being tested, and the AVR32 chip stores the The detection results of the facial skin color detection device and the blood oxygen saturation detection device are respectively matched with the contents of the CF memory card to determine the skin color level and blood oxygen saturation level of the tested person respectively.

Next, the specific structure of the second embodiment of an automatic tester applied to a smart meter production line of the present invention will be further described.

The tester includes: a CF memory card, which pre-stores preset proportional coefficients, preset skin color weights, preset blood oxygen saturation weights, preset trade-off lower limit thresholds, preset trade-off upper limit thresholds, and facial gray scale ranges. The facial grayscale range is used to separate the human face in the image from the background, and the CF memory card also pre-stores four skin color mean intervals and four blood oxygen saturation intervals, and the four skin color average intervals correspond to four The skin color level, the four blood oxygen saturation intervals correspond to the four blood oxygen saturation levels respectively.

The tester includes: an image acquisition device, including a hemispherical transparent cover, an auxiliary lighting sub-device and a CMOS camera, the hemispherical transparent cover is used to accommodate the auxiliary lighting sub-device and the CMOS camera, and the auxiliary lighting sub-device The device provides auxiliary lighting for the shooting of the CMOS camera, and the CMOS camera shoots the face of the tested person to obtain the facial image of the tested person.

The tester includes: facial skin color detection equipment, including adaptive recursive filter sub-equipment, median filter sub-equipment, scale transformation enhancement sub-equipment, target segmentation sub-equipment, skin color grade recognition sub-equipment and skin color extraction sub-equipment; The adaptive recursive filtering sub-device is connected with the CMOS camera, and is used for adopting adaptive recursive filtering processing on the facial image of the tested person to filter out the Gaussian noise in the facial image of the tested person to obtain an adaptive recursive filtered image The median filtering sub-device is connected to the adaptive recursive filtering sub-device, and is used to perform median filtering processing on the adaptive recursive filtering image to filter out the scattering components in the adaptive recursive filtering image, Obtaining a median filter image; the scale transformation enhancement sub-device is connected to the median filter sub-equipment for performing scale transformation enhancement processing on the median filter image, so as to enhance the contrast between the target and the background in the image, and obtain an enhancement Image; the target segmentation sub-device is connected to the scale transformation enhancement sub-device and the CF memory card respectively, and all pixels whose pixel gray value in the enhanced image is within the gray range of the face form a face sub-image , the face sub-image is separated and obtained from the background of the subject’s face image; the skin color extraction sub-device is connected with the target segmentation sub-device, and for the face sub-image, the brightness of all its pixels is accumulated and divided by The quantity of all its pixels obtains the average value of target skin color; the skin color level recognition sub-equipment is respectively connected with the skin color extraction sub-equipment and the CF memory card, and the target skin color average value is matched with four kinds of skin color average value intervals, and the output matching The skin color level corresponding to the average skin color range of is output as the target skin color level.

The tester includes: an enzyme electrode sensor, including three electrodes: a reference electrode, a counter electrode and a working electrode, glucose oxidase is fixed on the working electrode, wherein, when the measured blood sample of the person being tested drops on the working electrode When testing the area, the glucose oxidase immobilized on the working electrode reacts chemically with the glucose in the measured blood sample, and the response current on the working electrode has a linear relationship with the glucose concentration in the measured blood sample.

The tester includes: an amplifying circuit connected to the enzyme electrode sensor for receiving and amplifying the response current on the working electrode; a low-pass filter connected to the amplifying circuit for receiving and filtering the response current The high-frequency component; the light-emitting diode, which is set at the capillary position of the fingertip of the person under test, is connected with the light source driving circuit, and is used to emit infrared light and red light alternately based on the light-emitting control signal sent by the light source driving circuit; the light source driving circuit, A built-in timer is used to send a light-emitting control signal to the light-emitting diode.

The tester includes: a photoelectric converter, arranged on the fingertip of the person under test, at a position opposite to the light-emitting diode, for receiving infrared light and red light transmitted through capillaries of the fingertip of the person under test, and The transmitted infrared light and the transmitted red light are respectively converted into analog current signals to obtain the simulated infrared photocurrent and the simulated red photocurrent; the current-voltage conversion circuit is connected with the photoelectric converter for the analog infrared photocurrent and the simulated red photocurrent. The photocurrents are respectively subjected to current-voltage conversion to obtain analog infrared photovoltage and analog red photovoltage respectively.

The tester includes: a signal amplifier connected to the current-voltage conversion circuit for amplifying the simulated infrared light voltage and the simulated red light voltage respectively to obtain the simulated infrared light amplification voltage and the simulated red light amplification voltage; signal detection A circuit, connected to the signal amplifier, including a DC signal detection subcircuit and an AC signal detection subcircuit, for detecting the DC component and the AC component in the analog infrared photovoltage to output as the first DC voltage and the first AC voltage, It is also used to detect the DC component and the AC component in the analog red light voltage to output as the second DC voltage and the second AC voltage; the analog-to-digital converter is connected to the signal detection circuit and is used for the first DC voltage, Analog-to-digital conversion is performed on the first AC voltage, the second DC voltage and the second AC voltage respectively to obtain the first digitized DC voltage, the first digitized AC voltage, the second digitized DC voltage and the second digitized AC voltage.

The tester includes: a blood oxygen saturation calculation circuit connected to the analog-to-digital converter, dividing the ratio of the second digitized AC voltage to the second digitized DC voltage by the ratio of the first digitized AC voltage to the first digitized DC voltage Ratio to obtain the absorbed light ratio factor, and calculate the blood oxygen saturation based on the absorbed light ratio factor, wherein the blood oxygen saturation has a linear relationship with the absorbed light ratio factor.

The tester includes: an AVR32 chip, which is connected to the low-pass filter and the CF memory card respectively, and calculates the blood glucose concentration of the person under test based on the preset proportional coefficient and the filtered response current, wherein the preset proportional coefficient In order to determine the ratio of the linear relationship between the response current on the working electrode and the glucose concentration in the measured blood sample; the AVR32 chip is also connected with the blood oxygen saturation calculation circuit to obtain the blood oxygen saturation; when the AVR32 chip When the blood glucose concentration is at the preset blood glucose upper limit concentration, an identification signal of too high blood glucose concentration is issued; when the blood glucose concentration is at the preset blood glucose lower limit concentration, an identification signal of too low blood glucose concentration is issued.

Wherein, the AVR32 chip matches the calculated blood oxygen saturation with the four blood oxygen saturation intervals, and takes the blood oxygen saturation level corresponding to the successfully matched blood oxygen saturation interval as the target blood oxygen saturation grade.

Wherein, the AVR32 chip multiplies the target skin color level by the preset skin color weight, multiplies the target blood oxygen saturation level by the preset blood oxygen saturation weight, and adds the two products to obtain the total weight value. When the total weight When the value is less than or equal to the preset trade-off lower limit threshold, a hypoxemia identification signal is issued, and when the total trade-off value is greater than or equal to the preset trade-off upper limit threshold, an excess blood oxygen identification signal is issued.

Optionally, in the tester: the adaptive recursive filtering sub-device, the median filtering sub-device, the scale transformation enhancement sub-device, the target segmentation sub-device, the skin color level identification sub-device and the skin color extraction sub-device respectively adopt different CPLDs chips; the tester also includes: a wireless communication interface, connected to the AVR32 chip, used to wirelessly send identification signals of high blood glucose concentration, low blood glucose concentration, insufficient blood oxygen, or excessive blood oxygen signal; the wireless communication interface is a mobile communication device or a Bluetooth communication device; the mobile communication device is a GPRS mobile communication device, a 3G mobile communication device or a 4G mobile communication device.

In addition, an analog-to-digital converter, namely an A/D converter, or ADC for short, usually refers to an electronic component that converts an analog signal into a digital signal. A common analog-to-digital converter converts an input voltage signal into an output digital signal. Since the digital signal itself has no practical significance, it only represents a relative size. Therefore, any analog-to-digital converter needs a reference analog quantity as a conversion standard, and the more common reference standard is the largest convertible signal size. The output digital quantity represents the magnitude of the input signal relative to the reference signal.

The resolution of an analog-to-digital converter refers to the number of discrete digital signal values it can output for an analog signal within the allowable range. These signal values are usually stored in binary numbers, so the resolution is often in bits, and the number of these discrete values is a power of 2. For example, an ADC with 8-bit resolution can encode an analog signal into 256 different discrete values (because 2^8=256), from 0 to 255 (i.e. unsigned integers) or from -128 to 127 (that is, signed integers), which one to use depends on the specific application.

Adopting an automatic tester applied to the smart meter production line of the present invention, aiming at the technical problems of backward structure of blood oxygen saturation detection instrument in the prior art, few detection objects and single detection mechanism, high-precision and targeted The image recognition equipment recognizes the skin color of the person being tested and integrates it into the blood oxygen saturation detection process. At the same time, blood glucose detection equipment is added and the existing detection structure is optimized to comprehensively improve the performance of the blood oxygen saturation detection instrument.

It can be understood that although the present invention has been disclosed above with preferred embodiments, the above embodiments are not intended to limit the present invention. For any person skilled in the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or to be modified into equivalent changes, etc. effective example. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention, which do not deviate from the technical solution of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims (1)

1. being applied to an auto testing instrument for intelligent electric meter production line, described tester includes that CF deposits Card storage, blee detection equipment, blood sugar test equipment, blood oxygen saturation detection equipment and AVR32 Chip, described Compact Flash has prestored four kinds of colour of skin mean value interval and four kinds of blood oxygen saturation districts Between, described blood sugar test equipment is used for detecting the blood glucose level data of tested personnel, described AVR32 The testing result of described blee detection equipment and described blood oxygen saturation detection equipment is divided by chip Do not mate with the content of described Compact Flash, with determine respectively tested personnel colour of skin grade and Blood oxygen saturation grade；

Described tester includes:

Compact Flash, has prestored preset ratio coefficient, has preset colour of skin weight, default blood oxygen saturation Degree weight, default balance lower threshold, default balance upper limit threshold and face tonal range, described Portion's tonal range is for by the human body face in image and background separation, and described Compact Flash is the most in advance Store four kinds of colour of skin mean value interval and four kinds of blood oxygen saturation intervals, described four kinds of colour of skin mean value interval The most corresponding four kinds of colour of skin grades, the most corresponding four kinds of blood oxygen saturations in described four kinds of blood oxygen saturation intervals Degree grade；

Image capture device includes domed transparent cover, floor light subset and CMOS camera, Described domed transparent cover is used for accommodating described floor light subset and described CMOS camera, institute State the shooting that floor light subset is described CMOS camera and floor light, described CMOS are provided Photographic head to tested personnel's face shots to obtain tested personnel's face-image；

Blee detection equipment includes self adaptation recursive filtering subset, medium filtering subset, chi Degree conversion enhancer equipment, Target Segmentation subset, colour of skin grade identification subset and skin cluster Equipment；Described self adaptation recursive filtering subset is connected with described CMOS camera, for described Tested personnel's face-image uses self adaptation recursive filtering to process, to filter described tested personnel's face figure Gaussian noise in Xiang, it is thus achieved that self adaptation recursive filtering image；Described medium filtering subset is with described Self adaptation recursive filtering subset connects, for described self adaptation recursive filtering image performs intermediate value filter Ripple processes, to filter the scattering composition in described self adaptation recursive filtering image, it is thus achieved that medium filtering figure Picture；Described change of scale enhancer equipment is connected with described medium filtering subset, in described Value filtering image performs change of scale enhancement process, to strengthen target and the contrast of background in image, Obtain and strengthen image；Described Target Segmentation subset and described change of scale enhancer equipment and described CF Storage card connects respectively, by grey scale pixel value in described enhancing image in described face tonal range All pixels composition face subimage, described face subimage is from the back of the body of described tested personnel's face-image Jing Chu separates acquisition；Described skin cluster subset is connected, for face with described Target Segmentation subset Portion's subimage, by cumulative for the brightness of its all pixels and quantity divided by its all pixels to obtain target Colour of skin average；Described colour of skin grade identification subset is deposited with described skin cluster subset and described CF Card storage connects respectively, described target colour of skin average is mated with four kinds of colour of skin mean value interval, output matching The colour of skin grade corresponding to colour of skin mean value interval as target colour of skin grade export；

Enzyme electrode sensor, including reference electrode, to pole electrode and three electrodes of working electrode, work Glucoseoxidase it is fixed with, wherein, when the tested blood sample of tested personnel is dropped in work electricity on electrode During the test zone of pole, glucoseoxidase fixing on working electrode and the glucose in tested blood sample Chemical reaction occurs, and the response current on working electrode is with the concentration of glucose in tested blood sample linearly Relation；

Amplifying circuit, is connected with described enzyme electrode sensor, for receiving and amplifying on working electrode Response current；

Low pass filter, is connected with described amplifying circuit, for receiving and filter the height in response current Frequently composition；

Light emitting diode, is arranged on tested personnel's finger fingertip blood capillary position, drives electricity with light source Road connect, for based on light source driving circuit send LED control signal, alternate emission infrared light and HONGGUANG；

Light source driving circuit, built-in timer, for sending light emitting control letter to described light emitting diode Number；

Optical-electrical converter, is arranged on tested personnel's finger fingertip, is positioned at the phase of described light emitting diode To position, it is used for the infrared light after receiving transmission tested personnel's finger fingertip blood capillary and HONGGUANG, and Transmitted infrared light and transmission HONGGUANG are respectively converted into analog current signal, to obtain simulation infrared electro Stream and simulation HONGGUANG electric current；

Current-to-voltage converting circuit, is connected with described optical-electrical converter, for simulation infrared light electric current Current/voltage conversion is carried out respectively, to obtain simulation infrared light voltage and mould respectively with simulation HONGGUANG electric current Intend red voltages；

Signal amplifier, is connected with described current-to-voltage converting circuit, for simulation infrared light voltage It is amplified respectively with simulation red voltages, amplifies voltage with acquisition simulation infrared light and simulation HONGGUANG is put Big voltage；

Signal deteching circuit, is connected with described signal amplifier, including direct current signal detection electronic circuit and Alternating current signal detection electronic circuit, for detect simulation infrared light voltage in flip-flop with exchange into Point, to export as the first DC voltage and the first alternating voltage, it is additionally operable to detection simulation red voltages In flip-flop and alternating component, to export as the second DC voltage and the second alternating voltage；

Analog-digital converter, is connected with described signal deteching circuit, for the first DC voltage, first Alternating voltage, the second DC voltage and the second alternating voltage carry out analog digital conversion respectively, to obtain first Digital DC voltage, the first Digital AC voltage, the second Digital DC voltage and the second numeral Change alternating voltage；

Blood oxygen saturation computing circuit, is connected with described analog-digital converter, by the second Digital AC electricity The ratio of pressure and the second Digital DC voltage is divided by the first Digital AC voltage and the first digitized The ratio of DC voltage is to obtain the absorbing light ratio factor, and calculates blood oxygen based on the absorbing light ratio factor Saturation, wherein, blood oxygen saturation is linear with the absorbing light ratio factor；

AVR32 chip, is connected respectively with described low pass filter and described Compact Flash, based in advance If proportionality coefficient and filtered response current calculate the blood sugar concentration of tested personnel, wherein, preset ratio Example coefficient is the top-stitching determining the response current on working electrode with the concentration of glucose in tested blood sample The ratio of sexual relationship；Described AVR32 chip is also connected with blood oxygen saturation computing circuit to obtain blood oxygen Saturation；Described AVR32 chip, when described blood sugar concentration is at default blood glucose upper concentration, sends blood Sugar excessive concentration identification signal, when described blood sugar concentration is at default blood glucose least concentration, sends blood glucose Concentration too low identification signal；

Wherein, described AVR32 chip will calculate the blood oxygen saturation and described four kinds of blood oxygen saturations that obtain Degree interval is mated, by the blood oxygen saturation grade corresponding to the blood oxygen saturation interval that the match is successful As target blood oxygen saturation grade；

Wherein, described AVR32 chip is by target colour of skin grade and default colour of skin multiplied by weight, by target Blood oxygen saturation grade and default blood oxygen saturation multiplied by weight, by two product addition to obtain total power Weighing apparatus value, when total trade-off value is less than or equal to when presetting balance lower threshold, sends hypoxemia identification signal, When total trade-off value is more than or equal to when presetting balance upper limit threshold, send blood oxygen excess identification signal；

Self adaptation recursive filtering subset, medium filtering subset, change of scale enhancer equipment, mesh Mark segmentation subset, colour of skin grade identification subset and skin cluster subset are respectively adopted different CPLD chip realizes；

Wireless communication interface, is connected with described AVR32 chip, too high for wireless transmission blood sugar concentration Identify signal, blood sugar concentration too low identification signal, hypoxemia identification signal or blood oxygen excess identification letter Number；

Described wireless communication interface is mobile communication equipment；

Described mobile communication equipment is that GPRS mobile communication equipment, 3G mobile communication equipment or 4G move Dynamic communication equipment.