CN105353130A - Automatic tester applied to intelligent electric meter production line - Google Patents
Automatic tester applied to intelligent electric meter production line Download PDFInfo
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- CN105353130A CN105353130A CN201510750417.4A CN201510750417A CN105353130A CN 105353130 A CN105353130 A CN 105353130A CN 201510750417 A CN201510750417 A CN 201510750417A CN 105353130 A CN105353130 A CN 105353130A
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- 239000001301 oxygen Substances 0.000 claims abstract description 105
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 105
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/66—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving blood sugars, e.g. galactose
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
Abstract
The invention relates to an automatic tester applied to an intelligent electric meter production line. The tester includes a CF memory card, facial skin detection equipment, blood sugar detection equipment, blood oxygen saturation degree detection equipment and an AVR32 chip. The CF memory card prestores four skin color mean value intervals and four blood oxygen saturation degree intervals. The blood sugar detection equipment is used for detecting the blood sugar data of tested people. The AVR32 chip matches the detection results of the facial skin detection equipment and the blood oxygen saturation degree detection equipment with the content of the CF memory card respectively so as to determine the skin color grade and the blood oxygen saturation degree grade of the tested people. The automatic tester provided by the invention can perform analysis and early warning on a plurality of physiological parameters of the tested people more accurately.
Description
Technical field
The present invention relates to ammeter production field, particularly relate to a kind of auto testing instrument being applied to intelligent electric meter production line.
Background technology
The working strength of intelligent electric meter production line is very large, and personnel are often in highly intensive labour, and therefore condition is often in inferior health.The blood oxygen saturation of normal human's arterial blood is 98%, and venous blood is 75%.The metabolic processes of human body is biological oxidation process, and oxygen required in metabolic processes, be enter blood of human body by respiratory system, with the haemoglobin (Hb) in blood rbc, be combined into oxyhemoglobin (HbO
2), then be transported to partes corporis humani and divide in histocyte and go.Namely the ability that blood carries delivering oxygen is weighed by blood oxygen saturation.As can be seen here, the Real-Time Monitoring of blood oxygen saturation is extremely important in clinical rescue.
To measurement method of blood oxygen saturation mainly advanced row human blood collection in prior art, recycling blood gas analyzer carries out electrochemical analysis, measures blood oxygen pressure and calculates blood oxygen saturation.This Measures compare trouble, and can not continuous print monitoring be carried out.Also there are some finger cot type photoelectric sensors in prior art, during measurement, only need by sensor sleeve on finger, utilize finger as the transparent vessel of splendid attire haemoglobin, the ruddiness of use wavelength 660nm and the near infrared light of 940nm are as injecting light source, measure the light conductive strength by tissue bed, calculate hemoglobin concentration and blood oxygen saturation.
But all there is following defect in blood oxygen saturation detection scheme of the prior art: can only detect blood oxygen saturation, and the object of detection is more single; Testing mechanism falls behind, and structural redundancy is too high, and precision can not meet the accuracy requirement increasingly increased; Significantly, the detection mechanism of blood oxygen saturation is uniquely changed, can only by one because usually determining blood oxygen saturation, the inadequate science of testing process.
Therefore, the present invention proposes a kind of auto testing instrument being applied to intelligent electric meter production line, the structure of backward blood oxygen saturation detecting instrument can be improved, blood sugar test is dissolved in blood oxygen saturation detection, widens the scope of the physiological parameter of detection, improve the accuracy of detection of blood oxygen saturation, in addition, photoelectric sense technology and image recognition technology can also be combined the concentration determining blood oxygen saturation, thus, improve the Detection results of blood oxygen saturation instrument on the whole.
Summary of the invention
In order to solve the technical matters that prior art exists, the invention provides a kind of auto testing instrument being applied to intelligent electric meter production line, optimize the structure of current blood oxygen saturation detecting instrument, blood sugar test is incorporated in blood oxygen saturation detection, improve the accuracy of detection of blood oxygen saturation, simultaneously, the colour of skin of image recognition technology to tested personnel is targetedly adopted to identify, one of factor detect the colour of skin as blood oxygen saturation, makes the testing result of blood oxygen saturation not be subject to the interference of single factors.
According to an aspect of the present invention, provide a kind of auto testing instrument being applied to intelligent electric meter production line, described tester comprises Compact Flash, blee checkout equipment, blood sugar test equipment, blood oxygen saturation checkout 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 intervals, described blood sugar test equipment is used for detecting the blood glucose level data of tested personnel, the testing result of described blee checkout equipment and described blood oxygen saturation checkout equipment is mated with the content of described Compact Flash by described AVR32 chip respectively, to determine colour of skin grade and the blood oxygen saturation grade of tested personnel respectively.
More specifically, a kind ofly be applied in the auto testing instrument of intelligent electric meter production line described, comprise: Compact Flash, prestore preset ratio coefficient, preset colour of skin weight, preset blood oxygen saturation weight, preset balance lower threshold, preset balance upper limit threshold and facial tonal range, described facial tonal range is used for the human body face in image and background separation, described Compact Flash has also prestored 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 are corresponding four kinds of colour of skin grades respectively, described four kinds of blood oxygen saturations interval corresponding four kinds of blood oxygen saturation grades respectively, image capture device comprises domed transparent cover, floor light subset and CMOS camera, described domed transparent cover is for holding described floor light subset and described CMOS camera, described floor light subset provides floor light for the shooting of described CMOS camera, described CMOS camera to tested personnel's face shots to obtain tested personnel's face-image, blee checkout equipment comprises self-adaptation recursive filtering subset, medium filtering subset, change of scale enhancer equipment, Target Segmentation subset, colour of skin grade recognin equipment and skin cluster subset, described self-adaptation recursive filtering subset is connected with described CMOS camera, for adopting the process of self-adaptation recursive filtering to described tested personnel's face-image, with the Gaussian noise in tested personnel's face-image described in filtering, obtains self-adaptation recursive filtering image, described medium filtering subset is connected with described self-adaptation recursive filtering subset, for performing medium filtering process to described self-adaptation recursive filtering image, with the scattering composition in self-adaptation recursive filtering image described in filtering, obtains medium filtering image, described change of scale enhancer equipment is connected with described medium filtering subset, strengthening process, to strengthen the contrast of object and background in image, obtaining and strengthening image for performing change of scale to described medium filtering image, described Target Segmentation subset is connected respectively with described change of scale enhancer equipment and described Compact Flash, the all pixels of grey scale pixel value in described facial tonal range in described enhancing image are formed facial subimage, and described facial subimage is separated from the background of described tested personnel's face-image and obtains, described skin cluster subset is connected with described Target Segmentation subset, for facial subimage, the brightness of its all pixel to be added up and divided by the quantity of its all pixel to obtain target colour of skin average, described colour of skin grade recognin equipment is connected respectively with described skin cluster subset and described Compact Flash, described target colour of skin average mated with four kinds of colour of skin mean value interval, the colour of skin grade corresponding to colour of skin mean value interval of output matching exports as target colour of skin grade, enzyme electrode sensor, comprise contrast electrode, to pole electrode and working electrode three electrodes, working electrode is fixed with glucose oxidase, wherein, when the tested blood sample of tested personnel is dropped in the test zone of working electrode, glucose generation chemical reaction in glucose oxidase fixing on working electrode and tested blood sample, the concentration of glucose in the response current on working electrode and tested blood sample is linear, amplifying circuit, is connected with described enzyme electrode sensor, for receiving and amplifying the response current on working electrode, low-pass filter, is connected with described amplifying circuit, for receive and filtering response current in radio-frequency component, light emitting diode, is arranged on tested personnel's finger fingertip capillary position, is connected with light source driving circuit, for the LED control signal sent based on light source driving circuit, and alternate emission infrared light and ruddiness, light source driving circuit, built-in timer, for sending LED control signal to described light emitting diode, photoelectric commutator, be arranged on tested personnel's finger fingertip, be positioned at the relative position of described light emitting diode, for receiving the infrared light after transmission tested personnel finger fingertip capillary and ruddiness, and transmitted infrared light and transmit red light are converted to analog current signal respectively, to obtain simulation infrared light electric current and simulation ruddiness electric current, current-to-voltage converting circuit, is connected with described photoelectric commutator, for carrying out current/voltage conversion respectively to simulation infrared light electric current and simulation ruddiness electric current, to obtain simulation infrared light voltage and simulation red voltages respectively, signal amplifier, is connected with described current-to-voltage converting circuit, for amplifying respectively with simulation red voltages simulation infrared light voltage, amplifies voltage to obtain simulation infrared light amplification voltage and to simulate ruddiness, signal deteching circuit, be connected with described signal amplifier, comprise direct current signal and detect electronic circuit and alternating current signal detection electronic circuit, for detecting flip-flop in simulation infrared light voltage and alternating component, to export as the first DC voltage and the first alternating voltage, also for detecting flip-flop in simulation red voltages and alternating component, to export as the second DC voltage and the second alternating voltage, analog to digital converter, be connected with described signal deteching circuit, for carrying out analog to digital conversion respectively to the first DC voltage, the first alternating voltage, the second DC voltage and the second alternating voltage, to obtain the first Digital DC voltage, the first Digital AC voltage, the second Digital DC voltage and the second Digital AC voltage, blood oxygen saturation computing circuit, be connected with described analog to digital converter, the ratio of the second Digital AC voltage and the second Digital DC voltage is absorbed the light ratio value factor divided by the ratio of the first Digital AC voltage and the first Digital DC voltage to obtain, and calculate blood oxygen saturation based on the absorption light ratio value factor, wherein, blood oxygen saturation is linear with the absorption light ratio value factor, AVR32 chip, be connected respectively with described low-pass filter and described Compact Flash, the blood sugar concentration of tested personnel is calculated based on preset ratio coefficient and filtered response current, wherein, preset ratio coefficient is the ratio determining linear relationship between response current on working electrode and the concentration of glucose in tested blood sample, described AVR32 chip is also connected to obtain blood oxygen saturation with blood oxygen saturation computing circuit, described AVR32 chip, when described blood sugar concentration is at default blood sugar upper concentration, sends the too high identification signal of blood sugar concentration, when described blood sugar concentration is at default blood sugar least concentration, sends the too low identification signal of blood sugar concentration, wherein, described AVR32 chip mates calculating the blood oxygen saturation obtained with described four kinds of blood oxygen saturation intervals, using 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 trade-off value, when total trade-off value is less than or equal to default balance lower threshold, send hypoxemia identification signal, when total trade-off value is more than or equal to default balance upper limit threshold, send blood oxygen excess identification signal.More specifically, be a kind ofly applied in the auto testing instrument of intelligent electric meter production line described: self-adaptation recursive filtering subset, medium filtering subset, change of scale enhancer equipment, Target Segmentation subset, colour of skin grade recognin equipment and skin cluster subset adopt different CPLD chips to realize respectively.More specifically, a kind ofly be applied in the auto testing instrument of intelligent electric meter production line described, described tester also comprises: wireless communication interface, be connected with described AVR32 chip, for the too high identification signal of wireless transmission blood sugar concentration, the too low identification signal of blood sugar concentration, hypoxemia identification signal or blood oxygen excess identification signal.More specifically, be a kind ofly applied in the auto testing instrument of intelligent electric meter production line described: described wireless communication interface is mobile communication equipment or Bluetooth communication equipment.More specifically, be a kind ofly applied in the auto testing instrument of intelligent electric meter production line described: described mobile communication equipment is GPRS mobile communication equipment, 3G mobile communication equipment or 4G mobile communication equipment.
Accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
Fig. 1 is a kind of block diagram being applied to the first embodiment of the auto testing instrument of intelligent electric meter production line of the present invention.
Reference numeral: 1CF storage card; 2 blee checkout equipments; 3 blood sugar test equipment; 4 blood oxygen saturation checkout equipments; 5AVR32 chip
Embodiment
Below with reference to accompanying drawings a kind of embodiment being applied to the auto testing instrument of intelligent electric meter production line of the present invention is described in detail.
Anoxic has tremendous influence to body.Such as to CNS, the impact of Liver and kidney function.What first occur during hypoxemia is that compensatory heart rate accelerates, and heartbeat and cardiac output increase, and the circulation system is with the deficiency of the compensatory oxygen content of hyperkinetic state.Produce blood flow reallocation, brain and the expansion of crown cardioselective are to ensure that enough blood supplies simultaneously.But when serious hypoxic condition, because lactic acid under the internal membrane of heart is piled up, ATP synthesize reduction, generation myocardiac inhibition, and cause bradycardia, proiosystole, blood pressure drops and cardiac output reduce, and the arrhythmia cordis and even stop fighting such as to quiver in the room of appearance.
Because anoxic is to the harmfulness of people's health, blood oxygen saturation detecting instrument is one of problem of Medical Instruments developer emphasis research and development always.But current blood oxygen saturation detecting instrument detected object is single, circuit structure redundance is high and it is comprehensive not to detect mechanism, causes the poor effect that blood oxygen saturation detects, cannot meet the current demand of patient and hospital.
For this reason, the present invention has built a kind of auto testing instrument being applied to intelligent electric meter production line, optimize the structure of current blood oxygen saturation detecting instrument, blood sugar concentration is detected and incorporates in blood oxygen saturation detection, more crucially, the colour of skin of high-precision image recognition technology to tested personnel is adopted to identify, one of factor detect the colour of skin as blood oxygen saturation, consider the testing result of blood oxygen saturation, thus improve the intelligent level of medical detecting Instrument.
Fig. 1 is a kind of block diagram being applied to the first embodiment of the auto testing instrument of intelligent electric meter production line of the present invention, described tester comprises Compact Flash, blee checkout equipment, blood sugar test equipment, blood oxygen saturation checkout 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 intervals, described blood sugar test equipment is used for detecting the blood glucose level data of tested personnel, the testing result of described blee checkout equipment and described blood oxygen saturation checkout equipment is mated with the content of described Compact Flash by described AVR32 chip respectively, to determine colour of skin grade and the blood oxygen saturation grade of tested personnel respectively.
Then, continue to be further detailed a kind of concrete structure being applied to the second embodiment of the auto testing instrument of intelligent electric meter production line of the present invention.
Described tester comprises: Compact Flash, prestore preset ratio coefficient, preset colour of skin weight, preset blood oxygen saturation weight, preset balance lower threshold, preset balance upper limit threshold and facial tonal range, described facial tonal range is used for the human body face in image and background separation, described Compact Flash has also prestored 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 are corresponding four kinds of colour of skin grades respectively, described four kinds of blood oxygen saturations interval corresponding four kinds of blood oxygen saturation grades respectively.
Described tester comprises: image capture device, comprise domed transparent cover, floor light subset and CMOS camera, described domed transparent cover is for holding described floor light subset and described CMOS camera, described floor light subset provides floor light for the shooting of described CMOS camera, described CMOS camera to tested personnel's face shots to obtain tested personnel's face-image.
Described tester comprises: blee checkout equipment, comprises self-adaptation recursive filtering subset, medium filtering subset, change of scale enhancer equipment, Target Segmentation subset, colour of skin grade recognin equipment and skin cluster subset; Described self-adaptation recursive filtering subset is connected with described CMOS camera, for adopting the process of self-adaptation recursive filtering to described tested personnel's face-image, with the Gaussian noise in tested personnel's face-image described in filtering, obtains self-adaptation recursive filtering image; Described medium filtering subset is connected with described self-adaptation recursive filtering subset, for performing medium filtering process to described self-adaptation recursive filtering image, with the scattering composition in self-adaptation recursive filtering image described in filtering, obtains medium filtering image; Described change of scale enhancer equipment is connected with described medium filtering subset, strengthening process, to strengthen the contrast of object and background in image, obtaining and strengthening image for performing change of scale to described medium filtering image; Described Target Segmentation subset is connected respectively with described change of scale enhancer equipment and described Compact Flash, the all pixels of grey scale pixel value in described facial tonal range in described enhancing image are formed facial subimage, and described facial subimage is separated from the background of described tested personnel's face-image and obtains; Described skin cluster subset is connected with described Target Segmentation subset, for facial subimage, the brightness of its all pixel to be added up and divided by the quantity of its all pixel to obtain target colour of skin average; Described colour of skin grade recognin equipment is connected respectively with described skin cluster subset and described Compact Flash, described target colour of skin average mated with four kinds of colour of skin mean value interval, the colour of skin grade corresponding to colour of skin mean value interval of output matching exports as target colour of skin grade.
Described tester comprises: enzyme electrode sensor, comprise contrast electrode, to pole electrode and working electrode three electrodes, working electrode is fixed with glucose oxidase, wherein, when the tested blood sample of tested personnel is dropped in the test zone of working electrode, glucose generation chemical reaction in glucose oxidase fixing on working electrode and tested blood sample, the concentration of glucose in the response current on working electrode and tested blood sample is linear.
Described tester comprises: amplifying circuit, is connected with described enzyme electrode sensor, for receiving and amplifying the response current on working electrode; Low-pass filter, is connected with described amplifying circuit, for receive and filtering response current in radio-frequency component; Light emitting diode, is arranged on tested personnel's finger fingertip capillary position, is connected with light source driving circuit, for the LED control signal sent based on light source driving circuit, and alternate emission infrared light and ruddiness; Light source driving circuit, built-in timer, for sending LED control signal to described light emitting diode.
Described tester comprises: photoelectric commutator, be arranged on tested personnel's finger fingertip, be positioned at the relative position of described light emitting diode, for receiving the infrared light after transmission tested personnel finger fingertip capillary and ruddiness, and transmitted infrared light and transmit red light are converted to analog current signal respectively, to obtain simulation infrared light electric current and simulation ruddiness electric current; Current-to-voltage converting circuit, is connected with described photoelectric commutator, for carrying out current/voltage conversion respectively to simulation infrared light electric current and simulation ruddiness electric current, to obtain simulation infrared light voltage and simulation red voltages respectively.
Described tester comprises: signal amplifier, is connected with described current-to-voltage converting circuit, for amplifying respectively with simulation red voltages simulation infrared light voltage, amplifies voltage to obtain simulation infrared light amplification voltage and to simulate ruddiness; Signal deteching circuit, be connected with described signal amplifier, comprise direct current signal and detect electronic circuit and alternating current signal detection electronic circuit, for detecting flip-flop in simulation infrared light voltage and alternating component, to export as the first DC voltage and the first alternating voltage, also for detecting flip-flop in simulation red voltages and alternating component, to export as the second DC voltage and the second alternating voltage; Analog to digital converter, be connected with described signal deteching circuit, for carrying out analog to digital conversion respectively to the first DC voltage, the first alternating voltage, the second DC voltage and the second alternating voltage, to obtain the first Digital DC voltage, the first Digital AC voltage, the second Digital DC voltage and the second Digital AC voltage.
Described tester comprises: blood oxygen saturation computing circuit, be connected with described analog to digital converter, the ratio of the second Digital AC voltage and the second Digital DC voltage is absorbed the light ratio value factor divided by the ratio of the first Digital AC voltage and the first Digital DC voltage to obtain, and calculate blood oxygen saturation based on the absorption light ratio value factor, wherein, blood oxygen saturation is linear with the absorption light ratio value factor.
Described tester comprises: AVR32 chip, be connected respectively with described low-pass filter and described Compact Flash, the blood sugar concentration of tested personnel is calculated based on preset ratio coefficient and filtered response current, wherein, preset ratio coefficient is the ratio determining linear relationship between response current on working electrode and the concentration of glucose in tested blood sample; Described AVR32 chip is also connected to obtain blood oxygen saturation with blood oxygen saturation computing circuit; Described AVR32 chip, when described blood sugar concentration is at default blood sugar upper concentration, sends the too high identification signal of blood sugar concentration, when described blood sugar concentration is at default blood sugar least concentration, sends the too low identification signal of blood sugar concentration.
Wherein, described AVR32 chip mates calculating the blood oxygen saturation obtained with described four kinds of blood oxygen saturation intervals, using 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 trade-off value, when total trade-off value is less than or equal to default balance lower threshold, send hypoxemia identification signal, when total trade-off value is more than or equal to default balance upper limit threshold, send blood oxygen excess identification signal.
Alternatively, in described tester: self-adaptation recursive filtering subset, medium filtering subset, change of scale enhancer equipment, Target Segmentation subset, colour of skin grade recognin equipment and skin cluster subset adopt different CPLD chips to realize respectively; Described tester also comprises: wireless communication interface, is connected with described AVR32 chip, for the too high identification signal of wireless transmission blood sugar concentration, the too low identification signal of blood sugar concentration, hypoxemia identification signal or blood oxygen excess identification signal; Described wireless communication interface is mobile communication equipment or Bluetooth communication equipment; Described mobile communication equipment is GPRS mobile communication equipment, 3G mobile communication equipment or 4G mobile communication equipment.
In addition, analog to digital converter and A/D converter, or be called for short ADC, typically referring to one by analog-signal transitions is the electronic component of digital signal.Common analog to digital converter an input voltage signal is converted to a digital signal exported.Because digital signal itself does not have practical significance, only represent a relative size.Therefore any one analog to digital converter all needs one with reference to the standard of analog quantity as conversion, more common normative reference is maximum convertible signal magnitude.The digital quantity exported then represents the size of input signal relative to reference signal.
The resolution of analog-digital converter refers to, for the simulating signal in allowed band, it can export the number of discrete digital signal value.These signal values store with binary number usually, and therefore resolution is through commonly using bit as unit, and the number of these discrete values is power exponents of 2.Such as, simulating signal can be encoded into 256 different discrete values (because 2^8=256) by analog-digital converter with 8 bit resolutions, from 0 to 255 (i.e. signless integers) or from-128 to 127 (i.e. signed integers), any as use, then depend on concrete application.
Adopt a kind of auto testing instrument being applied to intelligent electric meter production line of the present invention, for in prior art, blood oxygen saturation detecting instrument structure is backward, detected object is few and detect the single technical matters of mechanism, refer to high precision, the targetedly image recognition apparatus colour of skin to tested personnel to identify, and be dissolved in the testing process of blood oxygen saturation, simultaneously, add blood sugar test equipment and optimize existing detection architecture, thus improving the performance of blood oxygen saturation detecting instrument comprehensively.
Be understandable that, although the present invention with preferred embodiment disclose as above, but above-described embodiment and be not used to limit the present invention.For any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the technology contents of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (6)
1. one kind is applied to the auto testing instrument of intelligent electric meter production line, described tester comprises Compact Flash, blee checkout equipment, blood sugar test equipment, blood oxygen saturation checkout 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 intervals, described blood sugar test equipment is used for detecting the blood glucose level data of tested personnel, the testing result of described blee checkout equipment and described blood oxygen saturation checkout equipment is mated with the content of described Compact Flash by described AVR32 chip respectively, to determine colour of skin grade and the blood oxygen saturation grade of tested personnel respectively.
2. be applied to the auto testing instrument of intelligent electric meter production line as claimed in claim 1, it is characterized in that, described tester comprises:
Compact Flash, prestore preset ratio coefficient, preset colour of skin weight, preset blood oxygen saturation weight, preset balance lower threshold, preset balance upper limit threshold and facial tonal range, described facial tonal range is used for the human body face in image and background separation, described Compact Flash has also prestored 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 are corresponding four kinds of colour of skin grades respectively, described four kinds of blood oxygen saturations interval corresponding four kinds of blood oxygen saturation grades respectively;
Image capture device comprises domed transparent cover, floor light subset and CMOS camera, described domed transparent cover is for holding described floor light subset and described CMOS camera, described floor light subset provides floor light for the shooting of described CMOS camera, described CMOS camera to tested personnel's face shots to obtain tested personnel's face-image;
Blee checkout equipment comprises self-adaptation recursive filtering subset, medium filtering subset, change of scale enhancer equipment, Target Segmentation subset, colour of skin grade recognin equipment and skin cluster subset; Described self-adaptation recursive filtering subset is connected with described CMOS camera, for adopting the process of self-adaptation recursive filtering to described tested personnel's face-image, with the Gaussian noise in tested personnel's face-image described in filtering, obtains self-adaptation recursive filtering image; Described medium filtering subset is connected with described self-adaptation recursive filtering subset, for performing medium filtering process to described self-adaptation recursive filtering image, with the scattering composition in self-adaptation recursive filtering image described in filtering, obtains medium filtering image; Described change of scale enhancer equipment is connected with described medium filtering subset, strengthening process, to strengthen the contrast of object and background in image, obtaining and strengthening image for performing change of scale to described medium filtering image; Described Target Segmentation subset is connected respectively with described change of scale enhancer equipment and described Compact Flash, the all pixels of grey scale pixel value in described facial tonal range in described enhancing image are formed facial subimage, and described facial subimage is separated from the background of described tested personnel's face-image and obtains; Described skin cluster subset is connected with described Target Segmentation subset, for facial subimage, the brightness of its all pixel to be added up and divided by the quantity of its all pixel to obtain target colour of skin average; Described colour of skin grade recognin equipment is connected respectively with described skin cluster subset and described Compact Flash, described target colour of skin average mated with four kinds of colour of skin mean value interval, the colour of skin grade corresponding to colour of skin mean value interval of output matching exports as target colour of skin grade;
Enzyme electrode sensor, comprise contrast electrode, to pole electrode and working electrode three electrodes, working electrode is fixed with glucose oxidase, wherein, when the tested blood sample of tested personnel is dropped in the test zone of working electrode, glucose generation chemical reaction in glucose oxidase fixing on working electrode and tested blood sample, the concentration of glucose in the response current on working electrode and tested blood sample is linear;
Amplifying circuit, is connected with described enzyme electrode sensor, for receiving and amplifying the response current on working electrode;
Low-pass filter, is connected with described amplifying circuit, for receive and filtering response current in radio-frequency component;
Light emitting diode, is arranged on tested personnel's finger fingertip capillary position, is connected with light source driving circuit, for the LED control signal sent based on light source driving circuit, and alternate emission infrared light and ruddiness;
Light source driving circuit, built-in timer, for sending LED control signal to described light emitting diode;
Photoelectric commutator, be arranged on tested personnel's finger fingertip, be positioned at the relative position of described light emitting diode, for receiving the infrared light after transmission tested personnel finger fingertip capillary and ruddiness, and transmitted infrared light and transmit red light are converted to analog current signal respectively, to obtain simulation infrared light electric current and simulation ruddiness electric current;
Current-to-voltage converting circuit, is connected with described photoelectric commutator, for carrying out current/voltage conversion respectively to simulation infrared light electric current and simulation ruddiness electric current, to obtain simulation infrared light voltage and simulation red voltages respectively;
Signal amplifier, is connected with described current-to-voltage converting circuit, for amplifying respectively with simulation red voltages simulation infrared light voltage, amplifies voltage to obtain simulation infrared light amplification voltage and to simulate ruddiness;
Signal deteching circuit, be connected with described signal amplifier, comprise direct current signal and detect electronic circuit and alternating current signal detection electronic circuit, for detecting flip-flop in simulation infrared light voltage and alternating component, to export as the first DC voltage and the first alternating voltage, also for detecting flip-flop in simulation red voltages and alternating component, to export as the second DC voltage and the second alternating voltage;
Analog to digital converter, be connected with described signal deteching circuit, for carrying out analog to digital conversion respectively to the first DC voltage, the first alternating voltage, the second DC voltage and the second alternating voltage, to obtain the first Digital DC voltage, the first Digital AC voltage, the second Digital DC voltage and the second Digital AC voltage;
Blood oxygen saturation computing circuit, be connected with described analog to digital converter, the ratio of the second Digital AC voltage and the second Digital DC voltage is absorbed the light ratio value factor divided by the ratio of the first Digital AC voltage and the first Digital DC voltage to obtain, and calculate blood oxygen saturation based on the absorption light ratio value factor, wherein, blood oxygen saturation is linear with the absorption light ratio value factor;
AVR32 chip, be connected respectively with described low-pass filter and described Compact Flash, the blood sugar concentration of tested personnel is calculated based on preset ratio coefficient and filtered response current, wherein, preset ratio coefficient is the ratio determining linear relationship between response current on working electrode and the concentration of glucose in tested blood sample; Described AVR32 chip is also connected to obtain blood oxygen saturation with blood oxygen saturation computing circuit; Described AVR32 chip, when described blood sugar concentration is at default blood sugar upper concentration, sends the too high identification signal of blood sugar concentration, when described blood sugar concentration is at default blood sugar least concentration, sends the too low identification signal of blood sugar concentration;
Wherein, described AVR32 chip mates calculating the blood oxygen saturation obtained with described four kinds of blood oxygen saturation intervals, using 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 trade-off value, when total trade-off value is less than or equal to default balance lower threshold, send hypoxemia identification signal, when total trade-off value is more than or equal to default balance upper limit threshold, send blood oxygen excess identification signal.
3. be applied to the auto testing instrument of intelligent electric meter production line as claimed in claim 2, it is characterized in that: self-adaptation recursive filtering subset, medium filtering subset, change of scale enhancer equipment, Target Segmentation subset, colour of skin grade recognin equipment and skin cluster subset adopt different CPLD chips to realize respectively.
4. be applied to the auto testing instrument of intelligent electric meter production line as claimed in claim 2, it is characterized in that, described tester also comprises: wireless communication interface, be connected with described AVR32 chip, for the too high identification signal of wireless transmission blood sugar concentration, the too low identification signal of blood sugar concentration, hypoxemia identification signal or blood oxygen excess identification signal.
5. be applied to the auto testing instrument of intelligent electric meter production line as claimed in claim 2, it is characterized in that: described wireless communication interface is mobile communication equipment or Bluetooth communication equipment.
6. be applied to the auto testing instrument of intelligent electric meter production line as claimed in claim 5, it is characterized in that: described mobile communication equipment is GPRS mobile communication equipment, 3G mobile communication equipment or 4G mobile communication equipment.
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