CN203672831U - Portable high precision blood glucose concentration measuring instrument - Google Patents
Portable high precision blood glucose concentration measuring instrument Download PDFInfo
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- CN203672831U CN203672831U CN201420056812.3U CN201420056812U CN203672831U CN 203672831 U CN203672831 U CN 203672831U CN 201420056812 U CN201420056812 U CN 201420056812U CN 203672831 U CN203672831 U CN 203672831U
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- 239000008280 blood Substances 0.000 title claims abstract description 28
- 210000004369 blood Anatomy 0.000 title claims abstract description 28
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 title claims abstract description 10
- 239000008103 glucose Substances 0.000 title claims abstract description 10
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 12
- 230000003321 amplification Effects 0.000 claims abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000005259 measurement Methods 0.000 abstract description 18
- 238000004891 communication Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000002848 electrochemical method Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
本实用新型公开了一种便携式高精度血糖浓度测量仪，包括微处理器控制单元、电流电压转换单元、数控放大单元、滤波处理单元、参考电压单元、温度传感单元、蓝牙无线收发单元、参考电极电压输出单元、触摸式LCD液晶显示单元以及供电单元；所述参考电压单元、温度传感单元、蓝牙无线收发单元、参考电极电压输出单元以及触摸式LCD液晶显示单元均与微处理器控制单元相连；所述电流电压转换单元经数控放大单元和滤波处理单元后与微处理器控制单元相连，同时数控放大单元与微处理器控制单元相连；所述供电单元为其余各个单元供电。本实用新型具有更高的血糖测量精度，并且能够更方便地与手机、电脑等实现无线通讯。
The utility model discloses a portable high-precision blood glucose concentration measuring instrument, which comprises a microprocessor control unit, a current and voltage conversion unit, a numerical control amplification unit, a filter processing unit, a reference voltage unit, a temperature sensing unit, a bluetooth wireless transceiver unit, a reference Electrode voltage output unit, touch-type LCD liquid crystal display unit and power supply unit; The reference voltage unit, temperature sensing unit, Bluetooth wireless transceiver unit, reference electrode voltage output unit and touch-type LCD liquid crystal display unit are all connected with the microprocessor control unit connected; the current-voltage conversion unit is connected to the microprocessor control unit after the numerical control amplification unit and the filter processing unit, and the numerical control amplification unit is connected to the microprocessor control unit at the same time; the power supply unit supplies power to the other units. The utility model has higher blood sugar measurement accuracy, and can realize wireless communication with mobile phones, computers and the like more conveniently.
Description
Technical field
The utility model relates to a kind of measurement of blood sugar concentration instrument, relates in particular to a kind of portable high-accuracy measurement of blood sugar concentration instrument.
Background technology
Existing various blood sugar concentration detectors on the market at present, wherein applying maximum is to utilize electrochemical method to detect, its principle is that blood sugar concentration is converted to proportional electric current, and then calculates corresponding blood sugar concentration by measuring electric current.Generally, the method affects two aspects that mainly contain of last measuring accuracy: the one, blood sugar concentration is converted to the precision of proportional electric current, the impact of its main tested person test paper and temperature is larger, and the former is relevant to manufacturer, and the latter is relevant to the temperature measurement accuracy of surveying instrument; The 2nd, the measuring accuracy of electric current, it depends primarily on the design of metering circuit.In addition, current blood glucose meter all utilizes microprocessor to process, and has certain difference with the microprocessor cost performance of producer, thereby also the measuring accuracy to blood-sugar detecting instrument and cost have a certain impact.And traditional detector carries out communication by data line and miscellaneous equipment, even there is no the export function of data etc., be not easy to the variation of long term monitoring individual blood sugar concentration.
Utility model content
For prior art above shortcomings, the purpose of this utility model is just to provide a kind of portable high-accuracy measurement of blood sugar concentration instrument, can effectively solve existing blood glucose meter measuring accuracy low, poor stability, inconvenient problem with use; There is higher blood glucose measurement precision, and can realize wireless telecommunications with mobile phone, computer etc. more easily.
To achieve these goals, the technical solution adopted in the utility model is such: a kind of portable high-accuracy measurement of blood sugar concentration instrument, is characterized in that: comprise microprocessor control unit, current/voltage converting unit, numerical control amplifying unit, filter processing unit, reference voltage unit, temperature sensing unit, blue teeth wireless Transmit-Receive Unit, reference electrode voltage output unit, touch LCD liquid crystal display and power supply unit;
Described reference voltage unit, temperature sensing unit, blue teeth wireless Transmit-Receive Unit, reference electrode voltage output unit and touch LCD liquid crystal display are all connected with microprocessor control unit;
Described current/voltage converting unit is connected with microprocessor control unit after filter processing unit through numerical control amplifying unit, and the amplifying unit of numerical control is simultaneously connected with microprocessor control unit;
Described power supply unit is all the other unit power supplies.
Further, described microprocessor control unit comprises 32-bit microprocessor STM32F103RD and peripheral circuit, and wherein STM32F103RD has A/D modular converter, 384K byte flash memory, 2 12 D/A modular converters and a real-time clock RTC of 3 12.
Further, described numerical control amplifying unit comprises programmable gain amplifier PGA112 and peripheral circuit.
Further, described blue teeth wireless Transmit-Receive Unit comprises bluetooth module BF10-I and peripheral circuit.
Compared with prior art, the utlity model has following advantage:
1, chosen the liquid crystal that high-precision amplifying, high-precision low-power consumption amplifier and low-power consumption show, therefore its have low in energy consumption, volume is little, integrated level is high, stable performance and measuring accuracy advantages of higher.
2
,the measurement of little electric current is had to higher survey precision, and measure according to input current size automatic switchover multiple, obtain higher measuring accuracy the identical molds number conversion figure place in the situation that to realize.
3
,introduce temperature compensation, simultaneously to because a series of errors of resistance error, several piece amplifying unit and microprocessor internal analog to digital conversion etc. are revised, thereby made the measuring accuracy of this instrument obtain further raising.
4
,adopted Bluetooth wireless transmission module, realization easily and mobile phone, computer etc. are realized the wireless transmission of data.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of microprocessor control unit;
Fig. 3 is the circuit theory diagrams of numerical control amplifying unit;
Fig. 4 is the circuit theory diagrams of blue teeth wireless Transmit-Receive Unit;
Fig. 5 is the circuit theory diagrams of reference voltage unit.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment: referring to Fig. 1, a kind of portable high-accuracy measurement of blood sugar concentration instrument, comprises microprocessor control unit, current/voltage converting unit, numerical control amplifying unit, filter processing unit, reference voltage unit, temperature sensing unit, blue teeth wireless Transmit-Receive Unit, reference electrode voltage output unit, touch LCD liquid crystal display and power supply unit; Described reference voltage unit, temperature sensing unit, blue teeth wireless Transmit-Receive Unit, reference electrode voltage output unit and touch LCD liquid crystal display are all connected with microprocessor control unit; Described current/voltage converting unit is connected with microprocessor control unit after filter processing unit through numerical control amplifying unit, and the amplifying unit of numerical control is simultaneously connected with microprocessor control unit; Described power supply unit is all the other unit power supplies.
Measuring instrument overall work is mainly under the control of 32-bit microprocessor STM32F103RD, obtain user profile from touch LCD, realize the measurement of blood sugar concentration by microprocessor control numerical control amplifying unit, blue teeth wireless Transmit-Receive Unit and touch LCD liquid crystal display etc., and preservation of measurement result, transmission, demonstration etc.This measurement of blood sugar concentration instrument, adopts high-performance integrated chip and microprocessor, so be easy to miniaturization, commercialization.
Described microprocessor control unit comprises 32-bit microprocessor STM32F103RD and peripheral circuit, and wherein STM32F103RD has A/D modular converter, 384K byte flash memory, 2 12 D/A modular converters and a real-time clock RTC of 3 12.Utilize in microprocessor the reference electrode that can be three electrode measurements with D/A conversion to export different reference voltages; The voltage transitions after filter processing unit is digital value to reference voltage, current/voltage inside to change realization with A/D; The real-time clock RTC of interior band obtains the real-time demonstration of time and the time of measurement result; The serial ports of interior band etc. can be realized and communicating with bluetooth module; The 384K byte flash memory of interior band, on the one hand can, for storage program, approximately need 100K byte, other for store test results (need 10 bytes to calculate by each result, at least can store 29000 records, this can meet the demands completely).In addition, microprocessor sends corresponding data or control signal according to the information of touch-screen input to other parts simultaneously; Controlling LCD liquid crystal realizes the demonstration of various relevant informations and carries out data transmission etc. by blue teeth wireless Transmit-Receive Unit.
Referring to Fig. 2, node R efVoltOut, RefVoltIn are connected with reference voltage unit output node with the input node of reference electrode voltage output unit respectively; Node M easureVoltageIn is connected with the output node of filter processing unit; Node TempVin is connected with the corresponding output node of temperature sensing unit; Node PGA112CS, PGA112DIO, PGA112SCLK are connected with corresponding node in numerical control amplifying unit respectively; Node B FRX, BFTX, BFMODE, BFINT, BFBaudRateSet1---BFBaudRateSet4, BFChannelSet1---BFChannelSet6 are connected with the corresponding node in receiving element with wireless transmission respectively; Node DD0---DD7, LCD_DI, LCD_RW, LCD_E, LCD_CSA, LCD_CSB, LCD_REST, LCD_Control, TCS, TDOUT, TDIN, TCLK, TBUSY, TPENIRQ are connected with corresponding node in touch LCD liquid crystal display respectively; Interface ISP is connected with outside serial ports, for the programming of microprocessor; Hummer Buzz, under the control of microprocessor, sends prompt tone when realization has button to press; Interface Boot is connected with outside, enters running status or programming state for controlling microprocessor after powering on; Supply node AV3.0V, AV3.3V, DV3.3V, DGND, AGND respectively with high-precision power 3.0V, analog power 3.3V in power supply unit, digital power 3.3V, digitally, be connected in analog, for this unit provides working power.
Referring to Fig. 3, described numerical control amplifying unit comprises programmable gain amplifier PGA112 and peripheral circuit.Mainly under the control of microprocessor, to realize 1,2,4,8,16,32,64 and 128 several enlargement factor controls, to reach maximal accuracy.Node PGA112CS, PGA112DIO, PGA112SCLK are connected with corresponding node in microprocessor control unit respectively; Node IToVoltIn is connected with the corresponding node in current/voltage converting unit; Node R efVoltIn is connected with the corresponding node in reference electrode voltage output unit; Node Vout is connected with the input node in filter processing unit; Supply node AV3.3V, DV3.3V, AGND, DGND respectively with analog power 3.3V, digital power 3.3V in power supply unit, in analog, be digitally connected, for this unit provides working power.
Referring to Fig. 4, described blue teeth wireless Transmit-Receive Unit comprises bluetooth module BF10-I and peripheral circuit.Be primarily implemented under the control of microprocessor the wireless transmission of carrying out data with universal blue tooth equipment connections such as the Bluetooth adapter of computer, PDA, mobile phones.Node B FRX, BFTX, BFMODE, BFINT, BFBaudRateSet1---BFBaudRateSet4, BFChannelSet1---BFChannelSet6 are connected with the corresponding node in microprocessor control unit respectively; Supply node DV3.3V, DGND respectively with digital power 3.3V in power supply unit, be digitally connected, for this unit provides working power.
Referring to Fig. 5, reference voltage unit is mainly the precision of raising per pass A/D conversion and designs.All to be the reference voltage that A/D changes with the supply voltage of analog input due to the value of changing with A/D in STM32F103RD, consider consistance between analog power Possible waves and disparate modules etc., select a high precision 3V reference voltage chip ADR363B, its output voltage noise peak peak value is only 6.8 V, voltage accuracy ± 3mV, temperature coefficient is only 9 ppm/ ℃, and exported together with STM32F103RD be node R efVoltIn analog input be connected, using as with reference to use.Can avoid well the interference of supply voltage introducing and solve well the consistency problem of measuring between disparate modules and improve measuring accuracy etc. by the method.Supply node AV5.0V, AGND respectively with analog power 5.0V in power supply unit, be connected in analog, for this unit provides working power.
In use procedure, user is by information such as the input test of touch LCD liquid crystal display, preservations, microprocessor control unit is by D/A modular converter output changing voltage, then be delivered to test paper by reference to electrode voltage output unit, by A/D modular converter, output voltage is gathered simultaneously, in real time output voltage is proofreaied and correct, thus the precision of raising output voltage; And then assurance measuring accuracy.Current/voltage converting unit is to amplify by numerical control amplifying unit after voltage by current conversion, the enlargement factor of this numerical control amplifying unit is by microprocessor control unit control, signal after amplification is input to the A/D modular converter of microprocessor control unit after filter processing unit, thereby realize the electric current of measuring input, further utilize the direct corresponding relation of electric current and blood sugar concentration to calculate corresponding blood sugar concentration, under the control of microprocessor control unit, demonstrate the information such as blood sugar concentration by touch LCD liquid crystal display, also can carry out data communication by blue teeth wireless Transmit-Receive Unit and other peripheral hardware.Meanwhile, the temperature of temperature sensing unit Real-time Collection measurement environment, to carry out temperature correction to image data in real time; Reference voltage unit, for the A/D modular converter in microprocessor provides stable voltage, to improve the precision of A/D modular converter, thereby further improves overall measuring accuracy.
The realization of the utility model patent utilization operational amplifier is converted to proportional electric current with electrochemical method by blood sugar concentration and is further converted to corresponding magnitude of voltage, and use 12 A/D of 32-bit microprocessor control programmable amplifier and interior band to change, realize its magnitude of voltage is converted to corresponding digital value, utilize reference value and the linear correction value of external reference voltage under the value of A/D conversion, different amplification that microprocessor is set to revise result simultaneously, and then draw accurate blood glucose concentration value.On the other hand by outwards changing and provide a reference voltage into the three-electrode method measurement in electrochemical method with D/A in microprocessor.Finally, under the control of microprocessor, preserve, show result, and transmit measurement result etc. by bluetooth radio module; Thereby the preservation of the measurement result of being more convenient for and checking.
Finally it should be noted that, above embodiment is only in order to the technical solution of the utility model to be described but not restriction technologies scheme, those of ordinary skill in the art is to be understood that, those are modified to the technical solution of the utility model or are equal to replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of claim scope of the present utility model.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420056812.3U CN203672831U (en) | 2014-01-29 | 2014-01-29 | Portable high precision blood glucose concentration measuring instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420056812.3U CN203672831U (en) | 2014-01-29 | 2014-01-29 | Portable high precision blood glucose concentration measuring instrument |
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| CN203672831U true CN203672831U (en) | 2014-06-25 |
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| CN201420056812.3U Expired - Fee Related CN203672831U (en) | 2014-01-29 | 2014-01-29 | Portable high precision blood glucose concentration measuring instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092497A (en) * | 2015-08-26 | 2015-11-25 | 重庆医科大学 | Individual blood sugar concentration detecting device and data processing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092497A (en) * | 2015-08-26 | 2015-11-25 | 重庆医科大学 | Individual blood sugar concentration detecting device and data processing method thereof |
| CN105092497B (en) * | 2015-08-26 | 2017-10-27 | 重庆医科大学 | The data processing method of individuation blood sugar concentration detection means |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20150129 |
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| EXPY | Termination of patent right or utility model |