CN204287097U - A kind of blood glucose monitoring system - Google Patents
A kind of blood glucose monitoring system Download PDFInfo
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- CN204287097U CN204287097U CN201420232937.7U CN201420232937U CN204287097U CN 204287097 U CN204287097 U CN 204287097U CN 201420232937 U CN201420232937 U CN 201420232937U CN 204287097 U CN204287097 U CN 204287097U
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Abstract
The utility model discloses a kind of blood glucose monitoring system, comprise microcontroller, the blood sugar test circuit be connected with microcontroller, the temperature measurement circuit be connected with microcontroller, the memory circuit be connected with microcontroller, the voicefrequency circuit that is connected with microcontroller, voicefrequency circuit comprises earphone telecommunication circuit, audio frequency sound circuit, microphone circuit.The earphone telecommunication circuit of blood glucose monitoring system, audio frequency sound circuit, microphone circuit, realize not by means of only the equipment connection such as earphone cord and mobile phone transmission data, also can by the equipment transmission data such as sound wave and mobile phone.
Description
Technical field
The utility model relates to technical field of medical instruments, particularly relates to a kind of blood glucose monitoring system.
Background technology
Along with the development of electronic technology, electronics blood glucose monitoring system also starts to popularize gradually, is called that diabetes patient detects the common tool of blood sugar.
Electronics blood glucose monitoring system is also called electronic blood glucose meter, is a kind of smart electronics Medical Instruments of testing own blood glucose index easily, is generally applicable to the crowd that blood sugar is higher.Mainly comprise blood glucose monitoring system, test paper and syringe needle, syringe needle is used for puncturing nameless blood sampling, and test paper is for sucking sample of blood, and be linked in blood glucose monitoring system, blood glucose monitoring system draws glycemic index by test paper.
But current electronics blood glucose monitoring system show that glycemic index only realizes, in self display, not providing the ability with other devices communicatings, not being well positioned to meet the needs of user.
Utility model content
The object of the present embodiment utility model is to provide a kind of blood glucose monitoring system, realizes transmitting data with mobile phone.
The object of the present embodiment utility model is achieved through the following technical solutions:
A kind of blood glucose monitoring system, comprise microcontroller, the blood sugar test circuit be connected with microcontroller, the temperature measurement circuit be connected with microcontroller, the memory circuit be connected with microcontroller, the voicefrequency circuit that is connected with microcontroller, voicefrequency circuit comprises earphone telecommunication circuit, audio frequency sound circuit, microphone circuit.
Wherein, described blood sugar test circuit comprises the conversion of blood sugar electric current and amplifying circuit, and analog digital A/D changes shifting circuit.
Wherein, described blood glucose monitoring system also comprises: the mu balanced circuit be connected with microcontroller, is connected reference voltage circuit with blood sugar test circuit and mu balanced circuit, the lithium battery be connected with mu balanced circuit.
Wherein, described blood glucose monitoring system also comprises: the buzzer circuit be connected with microcontroller.
Wherein, described blood glucose monitoring system also comprises: the key circuit be connected with microcontroller.
Wherein, described blood glucose monitoring system also comprises: the display screen connecting circuit be connected with microcontroller
The technical scheme provided as can be seen from above-mentioned the present embodiment utility model, the earphone telecommunication circuit of blood glucose monitoring system, audio frequency sound circuit, microphone circuit, realize not by means of only the equipment connection such as earphone cord and mobile phone transmission data, also can by the equipment transmission data such as sound wave and mobile phone.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
The blood glucose monitoring system that Fig. 1 provides for the utility model embodiment forms schematic diagram one.
The blood glucose monitoring system that Fig. 2 provides for the utility model embodiment forms schematic diagram two.
Earphone telecommunication circuit schematic diagram in the blood glucose monitoring system that Fig. 3 provides for the utility model embodiment.
The blood glucose monitoring system sound intermediate frequency power amplification circuit schematic diagram that Fig. 4 provides for the utility model embodiment.
The blood glucose monitoring system sound intermediate frequency amplifying circuit power switch schematic diagram that Fig. 5 provides for the utility model embodiment.
Microphone circuit schematic diagram in the blood glucose monitoring system that Fig. 6 provides for the utility model embodiment.
Voltage of voltage regulation circuit diagram in the blood glucose monitoring system that Fig. 7 provides for the utility model embodiment.
Reference voltage circuit schematic diagram in the blood glucose monitoring system that Fig. 8 provides for the utility model embodiment.
The conversion of blood sugar electric current and amplifying circuit schematic diagram in the blood glucose monitoring system that Fig. 9 provides for the utility model embodiment.
A/D (analog to digital conversion) circuit diagram in the blood glucose monitoring system that Figure 10 provides for the utility model embodiment.
Temperature measurement circuit schematic diagram in the blood glucose monitoring system that Figure 11 provides for the utility model embodiment.
Memory circuit schematic diagram in the blood glucose monitoring system that Figure 12 provides for the utility model embodiment.
Buzzer circuit schematic diagram in the blood glucose monitoring system that Figure 13 provides for the utility model embodiment.
Cell voltage circuit diagram is measured in the blood glucose monitoring system that Figure 14 provides for the utility model embodiment.
Key circuit schematic diagram in the blood glucose monitoring system that Figure 15 provides for the utility model embodiment.
Display screen connecting circuit schematic diagram in the blood glucose monitoring system that Figure 16 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on embodiment of the present utility model, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection domain of the present utility model.
As shown in Figure 1, the embodiment of the present invention provides a kind of blood glucose monitoring system, comprise microcontroller 11, the blood sugar test circuit 12 be connected with microcontroller 11, the temperature measurement circuit 13 be connected with microcontroller 11, the memory circuit 14 be connected with microcontroller 11, the voicefrequency circuit 15 that is connected with microcontroller 11, voicefrequency circuit 15 comprises earphone telecommunication circuit 151, audio frequency sound circuit 152, microphone circuit 153.
The technical scheme provided as can be seen from above-mentioned the present embodiment utility model, the earphone telecommunication circuit of blood glucose monitoring system, audio frequency sound circuit, microphone circuit, realize not by means of only the equipment connection such as earphone cord and mobile phone transmission data, also can by the equipment transmission data such as sound wave and mobile phone.
Further, as shown in Figure 2, embodiment of the present invention blood glucose monitoring system, also comprise the mu balanced circuit 21 be connected with microcontroller 200, reference voltage circuit 22 is connected, the lithium battery 23 be connected with mu balanced circuit 21, the buzzer circuit 24 be connected with microcontroller 200 with blood sugar test circuit 201 and mu balanced circuit 21, the key circuit 25 be connected with microcontroller 200, the display screen connecting circuit 26 be connected with microcontroller 200.
Battery 23 adopts frivolous lithium battery, voltage at 3.8 ~ 6V, for other circuit are powered.
It will be understood by those skilled in the art that buzzer circuit 24 can connect hummer, key circuit 25 can connect multiple button, and display screen connecting circuit 26 can connect display screen.
For the ease of understanding, as shown in Figure 2, illustrate temperature measurement circuit 202, memory circuit 203, voicefrequency circuit 204.
The earphone telecommunication circuit 2041 of voicefrequency circuit 204 can frames connecting with headphone line, and the audio frequency sound circuit 2042 of voicefrequency circuit 204 can connect loudspeaker, and microphone circuit 2043 can connect microphone.
Specifically, microcontroller is single-chip microcomputer, and single-chip microcomputer model can be STM32F103RET6.
As shown in Figure 3, earphone telecommunication circuit:
The R of earphone heads is R channel wiring, and L is L channel wiring, and G is ground wire, and M is mic line.Mobile phone terminal L line is used for sending order, and R line is used for sending data, and M is in order to receive the data from blood glucose monitoring system; What blood glucose monitoring system end was corresponding receives single-chip microcomputer 4 pins respectively, wherein M and the pin PA5 (21 pin) with analog conversion function, R, L line connects 44, No. 45 common pin mobile phones respectively and transmits data by R, L two lines to blood glucose monitoring system, data, such mobile phone and the blood glucose monitoring system normal transmission data of blood glucose monitoring system are received by M line.
Specifically, audio frequency sound circuit, blood glucose monitoring system exports data (sound wave) by loudspeaker, and such mobile phone can collect these data, realizes mobile phone and blood glucose monitoring system transmission data.
As shown in Figure 4, audio frequency sound circuit, comprises audio power amplifying circuit:
Microcontroller is by having No. 20 pin (PA4) outputting analog signals of analog conversion function, accessing to audio input amplifier.
Because the analog voltage driving force directly after D/A (digital-to-analog conversion) conversion is very little, be not enough to drive loudspeaker to sound, so connect audio power amplifying circuit after simulating signal after D/A conversion to carry out power amplification to simulating signal.This circuit is primarily of LM386 chip and resistance capacitance composition.
Before sound signal is amplified, add the voltage follower and integrating circuit that are made up of amplifier LM358.Concrete connected mode as shown in Figure 4.8 pins of LM358 chip meet VCC_DEV, 4 pin ground connection, simultaneously between 8,4 pins, connect the nonpolar electric capacity of 0.1uF and the paster tantalum electric capacity of 10uF.Input end 1 pin connects integrating circuit, is the round and smooth of signal change.Signal exports ingoing power amplifying circuit from No. 7 pins after integration.
This power amplification circuit is made up of chip LM386 and peripheral resistance, electric capacity.Chip 1,8 pin indirect 10uF paster tantalum electric capacity, 1 pin connects tantalum capacitance cathode; 6 pin meet power supply VCC_DEV, simultaneously and connect the nonpolar electric capacity of 0.1uF and 10uF tantalum electric capacity, supply voltage are stablized; 2,4 pin ground connection; 7 pin be connected in series the nonpolar electric capacity of 0.1uF between ground; 3 pin are input pin, connect the output signal of front stage circuits; No. 5 is the output of amplified signal, and connect the positive pole of 10uF tantalum electric capacity CB15, its negative pole connects loudspeaker positive pole, connects resistance with ground simultaneously.
As shown in Figure 5, audio frequency sound circuit, also comprises audio amplifier circuit power switch:
In the standby state, although single-chip microcomputer enters low-power consumption mode, peripheral components does not have deenergization to equipment, still can consume electric energy.In order to reduce equipment power dissipation further, extension device service time, designing the power supply of corresponding power switch circuit to the larger device of peripheral power consumption and controlling.
The circuit of design as shown in Figure 5.Wherein SI_GATE connects No. 17 pins (PA3) of microcontroller, and the exportable low and high level of this pin controls the break-make of triode Q10.R72 is the pull down resistor of 10K, and under ensureing or non-configuration status unsettled at pin, NPN type triode Q3 disconnects, thus PMOS is disconnected, and does not power to voicefrequency circuit.D10 is germanium diode, and forward conduction voltage drop is about 0.2 ~ 0.3V.IC12 is SI9934 chip, and 1,3 pins connect the negative electrode of diode D10, and 2,4 pins are control end, connect the tie point of R74 and R73; 5,6,7,8 pins are for being output terminal, the power input of direct accessing to audio circuit.Its control method: when needs are by voice communication, signal SI_GATE is pulled to high level, now triode Q10 conducting, the collector of Q10 is pulled to about 0.7V, now the control end voltage of chip IC 12 is far below input terminal voltage, metal-oxide-semiconductor IC12 conducting, output voltage; When needing to close, signal SI_GATE is dragged down, Q10 disconnects, and IC12 control end voltage is driven high to VCC_BATTERY, and now MOS disconnects.
As shown in Figure 6, microphone circuit:
Employ digital microphone chip ADMP521 in this circuit, its inner integrated mic and ADC module, directly speech simulation signal conversion digital signal, then data can be transferred in microcontroller and process.This chip No. 2 pins connect with GND, choice for use left channel transfer data.CLK, DATA pin of chip connects 34, No. 36 pins of microcontroller respectively, is realized the data transmission of ADMP521 and microcontroller by these two pins.Microcontroller to receive after data this decoding data, obtains the data from mobile phone, then does other process.
Specifically, as shown in Figure 7, mu balanced circuit:
Voltage stabilizing chip adopts AMS1117-3.3, and by following circuit, lithium battery voltage being changed into 3.3V, is the power supplies such as single-chip microcomputer.Its circuit structure is as follows: 1 pin ground connection, the i.e. cathode of lithium battery of voltage stabilizing chip AMS1117; Meet the paster tantalum electric capacity C1 of nonpolar patch capacitor C2 and 4.7uF of 0.1uF before 3 pins, electric capacity C1 and C2 is connected in parallel; When circuit-board laying-out, C2 places near chip AMS1117.C1 and C2 mono-termination lithium battery anode, another termination cathode of lithium battery; 2 pin of AMS1117 meet the paster tantalum electric capacity C4 of nonpolar patch capacitor C3 and 10uF of 0.1uF; C3 and C4 is connected in parallel, one termination output voltage 3.3V, other end ground connection.
As shown in Figure 8, reference voltage circuit:
IC3 is controllable accurate source of stable pressure TL431, and there is a 2.5V reference voltage accurately its inside, and low reference pin voltage compares with output voltage VREF all the time, ensures that output voltage VREF stablizes.IC3 negative electrode connects output VREF, plus earth, low reference pin ground connection.Anode series resistance R20 meets supply voltage VCC.
Specifically, as shown in Figure 9, blood sugar test circuit, comprises the conversion of blood sugar electric current and amplifying circuit:
Wherein operational amplifier IC2A in-phase end connects bleeder circuit, and output terminal is connected feedback resistance R13 with backward end, regulates this resistance sizes, adjustable output voltage value.R11 and R12 forms bleeder circuit, reference voltage V REF dividing potential drop, makes IC2A in-phase end obtain about 300mV voltage.The in-phase end series resistor R14 of IC2A output terminal and rear class operational amplifier IC2B, simultaneously shunt-wound capacitance C11.C11, to its filter action of signal, reduces the interference of outer bound pair signal; R11 is in order to isolate IC2A and electric capacity C11.IC2B is designed to voltage follower, and its output terminal is connected with backward end, and homophase termination prime outputs signal, and can ensure like this to cause signal attenuation excessive because prime output signal is directly connected with metering circuit, measures the factors such as inaccurate.IC2B output terminal connects low-pass filter, and in order to filtering high frequency spurs component, make measured value more steady, measurement result is more accurate.
As shown in Figure 10, blood sugar test circuit, also comprises A/D (analog to digital conversion) circuit:
A/D changes the modulus conversion chip AD7685 of use 16 bit resolution, and 2,10 pins meet cell voltage VCC, and connects the electric capacity of 10uF and 0.1uF between ground, in order to filter out power noise, is that power supply is more stable, clean; No. 1 pin meets reference voltage V REF, and this voltage stabilization is reliable, provides stable reference source to modulus conversion chip; 3,4 pins connect the analog quantity of input, and wherein No. 3 pin IN+ connect the output of signal amplification circuit, and No. 4 pin IN-meet GND, through sampling, the conversion of chip self, can obtain corresponding digital quantity.6 ~ 9 pins are the digital interface of chip, connect single-chip microcomputer PB4, PB3, PB2, PB1 pin respectively.Single-chip microcomputer controls modulus conversion chip by PB1 ~ PB4 pin, makes it normally work, converts the analog quantity of the blood sugar concentration of measurement to digital quantity, and then reads out from modulus conversion chip and do post-processed.
Specifically, as shown in figure 11, temperature measurement circuit:
This circuit is bleeder circuit, and wherein R21 is negative tempperature coefficient thermistor, and R21 also can be posistor here.R22 is conventional, electric-resistance, and R22 two ends 0.1uF electric capacity in parallel, in order to filtering high frequency spurs, ensures signal stabilization.ADC1 connects single-chip microcomputer PA1 pin.Single-chip microcomputer can carry out ADC conversion to ADC1 point voltage, and the temperature-resistance table then contrasting negative tempperature coefficient thermistor compares, and determines current environmental temperature, then corrects the blood glucose value measured.
Specifically, as shown in figure 12, memory circuit:
Its chips is the storage space of AT24C64 storage chip, 8K byte, can supply the storage blood glucose level data of 4 months.With resistance R23 connection value GND after its address pins 1,2,3 is connected, circuit working is, each pin voltage is 0, then the address of chip is 0.8 pins meet supply voltage VCC.WP pin has defencive function, its series resistor R24 to GND, and chip operation is voltage is 0V, in read-write process, be in nonprotected state, can normally and single-chip microcomputer carry out data transmission.5, the 6 pins pin that series resistor and single-chip microcomputer have an IIC function respectively links, or is connected with common pin.Single-chip microcomputer is read and write this chip by IIC mode.
Specifically, as shown in figure 13, buzzer circuit.
3.3V active buzzer is selected in circuit.Be connected in series the resistance of one 47 ohm between the positive pole of hummer and VCC, negative pole connects with the collector of NPN triode.Transistor emitter ground connection, base stage meets 1K resistance R28.Another termination microcontroller of resistance R28 No. 62 pin PB9.When the level of PB9 is high level, triode ON, hummer sends alarm sound; The level of PB9 is low level, and triode disconnects, and hummer stops sounding.
As shown in figure 14, cell voltage circuit is measured:
When cell voltage being detected lower than 3.5V, microprocessor controls buzzer warning, simultaneously to show battery electric quantity lower for display screen, and prompting user charges the battery.
Specifically, as shown in figure 15, key circuit.
This blood glucose monitoring system is configured with 3 buttons, and one of them is for measuring button, and remaining is query key.The connected mode of three buttons is all the same, only describes one of them here.One end of button connects ground, and the other end is connected in series a resistance and is connected to VCC, simultaneously a button two ends electric capacity in parallel, in order to remove burr signal.When button unclamps, the voltage of PB5 point is VCC, to high level, microprocessor detect then thinks that button unclamps; But when button is pressed, the voltage of PB5 point is 0V, to low level, microprocessor detect then thinks that button is pressed, performs and operate accordingly.PB5, PB6, PB7 are microcontroller 57,58, No. 59 pins respectively.
Specifically, as shown in figure 16, display screen connecting circuit.
Display screen is selected and the LCD (Liquid Crystal Display, liquid crystal display) of port transmission data, and its data pin D0 ~ D7 connects the PC0 ~ PC7 of microcontroller respectively, i.e. 8,9,10,11,24,25,37, No. 38 pins; Chip selection signal connects No. 61 pin PB8 of microcontroller.This display screen mainly shows blood glucose value and unit, time and the corresponding step information of user.
Above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (6)
1. a blood glucose monitoring system, it is characterized in that, comprise microcontroller, the blood sugar test circuit be connected with microcontroller, the temperature measurement circuit be connected with microcontroller, the memory circuit be connected with microcontroller, the voicefrequency circuit that is connected with microcontroller, voicefrequency circuit comprises earphone telecommunication circuit, audio frequency sound circuit, microphone circuit.
2. blood glucose monitoring system according to claim 1, is characterized in that, described blood sugar test circuit comprises the conversion of blood sugar electric current and amplifying circuit, and analog digital A/D changes shifting circuit.
3. blood glucose monitoring system according to claim 2, is characterized in that, described blood glucose monitoring system also comprises: the mu balanced circuit be connected with microcontroller, is connected reference voltage circuit with blood sugar test circuit and mu balanced circuit, the lithium battery be connected with mu balanced circuit.
4. blood glucose monitoring system according to claim 3, is characterized in that, described blood glucose monitoring system also comprises: the buzzer circuit be connected with microcontroller.
5. blood glucose monitoring system according to claim 4, is characterized in that, described blood glucose monitoring system also comprises: the key circuit be connected with microcontroller.
6. blood glucose monitoring system according to claim 5, is characterized in that, described blood glucose monitoring system also comprises: the display screen connecting circuit be connected with microcontroller.
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| CN201420232937.7U CN204287097U (en) | 2014-05-07 | 2014-05-07 | A kind of blood glucose monitoring system |
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| CN201420232937.7U CN204287097U (en) | 2014-05-07 | 2014-05-07 | A kind of blood glucose monitoring system |
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| CN204287097U true CN204287097U (en) | 2015-04-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568814A (en) * | 2016-10-19 | 2017-04-19 | 中国科学院电子学研究所 | Electrochemical detector based on audio port of smartphone for power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568814A (en) * | 2016-10-19 | 2017-04-19 | 中国科学院电子学研究所 | Electrochemical detector based on audio port of smartphone for power supply |
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| CF01 | Termination of patent right due to non-payment of annual fee |