CN207181422U

CN207181422U - A kind of fast high-sensitive blood glucose meter

Info

Publication number: CN207181422U
Application number: CN201720383699.3U
Authority: CN
Inventors: 兰玲; 田伟; 邓微
Original assignee: Beijing Jishuitan Hospital
Current assignee: Beijing Jishuitan Hospital
Priority date: 2017-04-13
Filing date: 2017-04-13
Publication date: 2018-04-03
Anticipated expiration: 2027-04-13

Abstract

It the utility model is related to a kind of fast high-sensitive blood glucose meter, it is mainly by body (1), strip socket (2), low-power consumption microcontroller (3), OLED display screen (4) and keyboard (5) are formed, and high speed analog-to-digital conversion module (31), PLD (32) and high-speed digital-analog modular converter (33) are integrated with low-power consumption microcontroller.The blood glucose meter not only possesses accuracy of detection height, the advantages of rapid sensitive, while strong antijamming capability, is easy to debug, is not affected by temperature.

Description

A kind of fast high-sensitive blood glucose meter

Technical field

Medical electronics device industry field is the utility model is related to, specifically, the utility model is related to a kind of quick high Sensitivity blood glucose meter, effectively blood glucose meter can be avoided to receive external interference.

Background technology

Nowadays the quantity mesh benefit of diabetic increases.Counted according to U.S. CDC (CDC), 2007 Year, there were 23,600,000 diabetics in the U.S., and quantity is all continuing to increase every year.Over-burden in current medical health system, In the case of expensive, family's diagnostic equipment of high performance-price ratio has become the solution of very attractive.For example, now Domestic glucometer (BGM) product can be bought in any one pharmacy.

The development in blood glucose meter market has attracted to include Roche (Roche), Johnson ＆ Johnson, Bayer, Abbott and Home The extensive concern of many major companies and some small companies including DiagnostICs.Since blood glucose measurement preparing test paper.Often Criticize test paper and be equipped with a code chip, this chip includes the important informations such as the term of validity., can be by code if test paper is out of question Start to test in chip insertion blood glucose meter.First will be from testee there collection blood sample.Roche blood glucose meter independent is adopted with one Blood pen, appropriate blood can be collected under the conditions of as painless as possible and is used to test.The blood sample collected will concentrate release to exist The designated area of test paper, then the contact jaw of test paper is put into blood glucose meter.So, blood glucose meter can is started working.Greatly Can reads result on the lcd screen after about 5 seconds.Blood glucose meter is also known as blood-glucose meter, is a kind of electronics for measuring blood sugar level Device.

In addition, blood glucose meter has a photometer head, it the advantages of be that price is relatively cheap, shortcoming is that detecting head is exposed to air In, it is easy to it is contaminated, influences test result, error range is positive and negative 0.8 or so, and service life is shorter, typically two It is more accurately, to suggest that the patient that photoelectric type machine is used does primary calibration to maintenance station after 2 years within year.Typically Hospital has hospital's representative periodically to be maintained, and domestic glucometer will then arrive after service department and carry out bare headed maintenance.

In view of the above-mentioned problems, ad hoc count the technical solution of the utility model to improve the speed that blood glucose meter test result comes out And accuracy.

Utility model content

The utility model purpose be to provide it is a kind of can Rapid reading and the high blood glucose meter of sensitivity.

To achieve the above object, the utility model uses following technical proposals：

A kind of fast high-sensitive blood glucose meter, blood glucose meter include body 1, and body lower part sets strip socket 2, and inside is set There are low-power consumption microcontroller 3, the top of body 1 to be provided with OLED display screen 4, keyboard 5 is distributed with middle part, it is characterised in that low High speed analog-to-digital conversion module, PLD and high-speed digital-analog modular converter are integrated with power consumption microcontroller.

In addition, the blood glucose meter also includes switch 6.

The PLD also includes storage circuit.

The PLD is also integrated with digital phase-sensitive detector, accumulator, digital vco.

Blood glucose meter refers mainly to indicate sensitivity, precision, the degree of accuracy, stability, ranging scope etc..

Sensitivity refers to the blood sugar concentration minimum change (susceptibility) that blood glucose meter can be measured, and is also referred to as resolution ratio； Precision is to weigh the index of instrument repeatability, refers to the minimum possible value that instrument itself measure blood sugar concentration can reach, by One group of measured value and the average deviation of average value represent, are also referred to as itself repeatable accuracy；The degree of accuracy refers to Instrument measuring true value Ability, i.e., the overall error compared with true value.

In addition to These parameters, power consumption, volume, cost also because considering blood glucose meter etc..It generally there are in the prior art Following concentration blood glucose meters：

Pocket blood glucose meter：Pocket blood glucose meter is invented since the 1970s, a drop capillary whole blood determination blood can be used Since sugar, it is possible to patient's self detecting blood sugar, rapid results, determine that treatment changes, shorten hospital day, it is thus regarded that being glycosuria A milestone in sick treatment history.Fast blood glucose meter due to can be by patient's Self-operating the advantages that, therefore diabetes association is not only Recommend self detecting blood sugar to be used by oneself for patient, and be set to inpatient's bedside inspection and be used, especially in emergency ward, operating room, provide special care to disease Room etc. is more applicable.And venous plasma measurement measure is mainly as diagnosing, correct pocket blood glucose meter, scientific research and other biochemical inspections are done Incidentally determined when looking into.

Biochemical blood glucose meter：Biochemical instruments with centrifuge separation blood obtain blood plasma after phlebotomizing, blood glucose meter slurry by with Portugal Grape carbohydrate oxidase reaction oxidizing glucose after produce hydrogen peroxide, with an other monitoring system determine hydrogen peroxide number, and Draw blood-sugar content.The mainly measurement of the advantages of biochemical instruments is very accurate, and shortcoming is that time of measuring is slow, could be obtained within usual second day To result；Blood using amount is more, generally wants 3000~5000 microlitres；Complex operation, only having received the people of professional training could operate；Machine Device is expensive, and only Partial Hospitals just have outfit.

But with requirement of the people to indexs such as the precision, stability and speed of blood glucose measurement, existing blood glucose meter is not It can meet to require.In this case, designing a kind of new blood glucose meter instrument has very big commercial value, can take into account height simultaneously The characteristic of speed measurement, and there is stability and high accuracy.

The utility model purpose is to provide a kind of fast high-sensitive blood glucose meter, and it is based on PLD, profit With basic logic unit therein realize measure loop reach with pure analog circuit identical effect, and be integrated into logic chip In.

Compared with existing newest blood glucose meter, its innovative point is, employs high speed analog-to-digital conversion module by acquisition Signal discrete, and traditional complicated huge Closed loop track analog hardware circuit has been integrated into a PLD It is central, realize the software implementation of hardware circuit.Because the unit scale of PLD is up to ten million gate leve, and can support more Road concurrent operation, can reach the equivalent measurement accuracy of analog hardware circuit, locking time and other effects, at the same again due to using What digital programmable was realized, therefore analog circuit temperature drift is not present, debugging is complicated, and production cost is high, bulky shortcoming.

The beneficial effects of the utility model：The utility model carries out high-acruracy survey to blood glucose.As a result of programmable The institute that logical device realizes the hardware circuit of traditional complexity is functional, not only possesses the phase locked track of analog hardware circuit realiration The advantages of precision is high, and real-time is good, while also possess the strong antijamming capability of digital programmable, be easy to debug, not by temperature Influence, cost it is low, the advantages of low in energy consumption, small volume.

Speed is fast：Its conversion frequency of the high speed analog-to-digital conversion module of use is high, therefore the response time is just received exactly equal to 10 Second；

Brief description of the drawings

Fig. 1 is the general frame of the utility model blood glucose meter, wherein 1- bodies, 2- strip sockets, 4-OLED display screens, 5- keyboards, 6- switches；

Embodiment

The utility model is further described according to following embodiments and accompanying drawing, what those skilled in the art can be appreciated that It is that following embodiments and accompanying drawing function only as the effect of explanation to the utility model.Without departing substantially from the utility model spirit Under the premise of, any improvement done to the utility model and replacement are within the scope of the utility model protection.

As shown in Figure 1, blood glucose meter includes body 1, and body lower part sets strip socket 2, is internally provided with low

Power consumption microcontroller 3, the top of body 1 are provided with OLED display screen 4, and keyboard 5 is distributed with middle part, it is characterised in that High speed analog-to-digital conversion module, PLD and high-speed digital-analog modular converter are integrated with low-power consumption microcontroller.

Blood glucose meter of the present utility model is mainly made up of signal transducer and measure loop.Collect strip socket 2 and gather blood The signal transducer of liquid information, then connects high speed analog-to-digital conversion module, and module connection PLD is described programmable Logical device is integrated with FIFO, digital phase-sensitive detector, digital integrator, modulated signal, digital vco, and forms inspection Survey time road, the measure loop interacts with low-power consumption microcontroller 3, and measure loop is connected with high-speed digital-analog modular converter, goes forward side by side Row power amplification.

Its measuring principle is similar with common blood glucose meter, the difference is that the utility model is reprocessed after signal is digitized.This Utility model realizes that digital hardware closed loop detects using basic logic unit inside PLD, by measure loop numeral Change, both remained the advantages of hardware closed-loop system high-speed measures, also remain the stability and high accuracy of signal digitized processing, All advantages of existing blood glucose meter are combined, it is also simple with circuit structure, greatly reduce the power consumption of system, volume and life The advantages that producing cost.

FIFO is a kind of storage circuit, and feature is the data first stored, is first read, maintains the sequencing of data. In the utility model, FIFO is as measure loop data input and the buffering of high speed analog-to-digital conversion module collection output.FIFO Mainly there is dual port RAM inside, for data storage, and read/write address generator, address code generation during for reading and writing data, also Free full signal generator.

Digital phase-sensitive detector can also be called phase discriminator, and output quantity is proportional to two phase differences with frequency input signal.Tradition Implementation has analog multiplier, and by signal multiplication post filtering, obtained DC voltage is proportional to input signal phase difference, advantage It is speed, circuit is simple.

The purpose of digital vco is output signal, and pumping signal senses after the conversion of high-speed digital-analog modular converter Device.Its core is also direct digital synthesis technique, and frequency adds modulated signal sine digital output by integrator output With control, centre frequency is determined by integrator, thus the sinusoidal digital quantity of modulated signal output should it is smaller as shown in FIG., will adjust Signal output processed and integrator output and the frequency control word as DDS, the output of voltage controlled oscillator be wobble frequency signal, center Frequency is determined by the output of digital integrator.

Blood glucose meter of the present utility model can obtain accurate blood sugar concentration information rapidly within 2~3 seconds.

Claims

A kind of 1. fast high-sensitive blood glucose meter, it is characterised in that：Including body (1), body (1) bottom sets strip socket (2), body (1) is internally provided with low-power consumption microcontroller (3), body (1) top is provided with OLED display screen (4), middle part It is furnished with keyboard (5), it is characterised in that high speed analog-to-digital conversion module, PLD are integrated with low-power consumption microcontroller With high-speed digital-analog modular converter；

PLD is also integrated with digital phase-sensitive detector, accumulator, digital vco；

The signal transducer of strip socket (2) collection blood information is collected, then connects high speed analog-to-digital conversion module, module connection PLD, the PLD are integrated with FIFO, digital phase-sensitive detector, digital integrator, modulation letter Number, digital vco, and form measure loop, the measure loop interacts with low-power consumption microcontroller (3), measure loop It is connected with high-speed digital-analog modular converter, and carries out power amplification.
2. fast high-sensitive blood glucose meter according to claim 1, it is characterised in that：The blood glucose meter also includes keyboard (5) right side is provided with switch (6).
3. fast high-sensitive blood glucose meter according to claim 1, it is characterised in that：PLD also includes depositing Storing up electricity road.