CN1472535A - Controller of portable blood sugar instrument - Google Patents
Controller of portable blood sugar instrument Download PDFInfo
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- CN1472535A CN1472535A CNA031169864A CN03116986A CN1472535A CN 1472535 A CN1472535 A CN 1472535A CN A031169864 A CNA031169864 A CN A031169864A CN 03116986 A CN03116986 A CN 03116986A CN 1472535 A CN1472535 A CN 1472535A
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Abstract
The controller has its connection as connecting reaction test signal port to A/D converter through amplifier, connecting chip microcomputer with A/D converter, crystal display, storage and clock supervisor, connecting output VBAT of voltage minotor to I/O mouth P5.0 of chip microcomputer, connecting V+ and Vout foot of level polarity converter to the eighth and the fourth foot of amplifier separately, connecting Vref foot of A/D converter to output foot of voltage stabilizer and connecting I/O mouth P 6.6 of chip microcomputer with voltage monitor, reaction test signal port and bottom module output. Two power sources in different voltage are provided by power supervisor for connecting abovesaid devices separately.
Description
Technical field
The present invention relates to a kind of blood glucose meter controller, particularly a kind of portable glucose meter controller belongs to medical instruments field.
Background technology
Traditional blood-glucose content detection is finished on large-scale Biochemical Analyzer, and sense cycle is grown, the need blood volume is big, cost is high, complicated operation, is unfavorable for patient's self-monitoring.Portable glucose meter can overcome above-mentioned defective, finishes the fast and convenient detection of blood sugar concentration, realize patient's blood sugar self-monitoring, and blood using amount is few.Portable glucose meter comprises test glucose oxidase electrode and two parts of blood glucose meter controller.Find that by literature search the Sun Jianzai of HUST " instrumental technique and sensor " writes articles " development of portable intelligent blood glucose monitoring system " on (6,17-20,1998), this article system introduction a kind of portable blood sugar tester.This tester is a core with the 89C51 singlechip chip, comprises parts such as LCD, V/F converter, constant potential metering circuit, multicircuit switch, temperature and resistance, measuring resistance, supply voltage monitoring and battery.This article in view of the temperature sensitivity of glucose oxidase, has carried out temperature compensation to test result with the glucose content in the glucose enzyme electrode measurement blood, to improve measuring accuracy; In addition, come the bucking-out system measuring error by self-correcting.Self-correcting is by multiway analog switch sequential carrying out between enzyme electrode, thermistor, 10K Ω measuring resistance and the zero load of measuring socket, because the complicacy of calibration circuit, the hardware cost of whole instrument is higher.On the other hand, the leakage current of multiway analog switch and conducting resistance then can be brought extra measuring error, and the soft alignment that the present invention adopts is fully different with it on technology path and enforcement means.On the complete machine performance, there are deficiencies such as function singleness, cost performance be low in the portable blood sugar tester of document introduction, and lack continuous historical test data and, can not realize monitored for prolonged periods of time, tracking and the contrast of user blood sugar concentration when Pretesting access, reproduction capability constantly.
Summary of the invention
Purpose of the present invention overcomes the deficiencies in the prior art, provide a kind of cost performance height, simple to operate, calibrate the controller of low-power consumption blood glucose meter easily, make it can finish output signal collection of blood sugar test element and data processing fast and accurately, history data store and back track function are provided simultaneously, make the user be able to that the blood sugar situation is carried out Continuous Tracking and monitor.
The present invention is achieved by the following technical solutions, the present invention mainly comprises: one-chip computer, storer, timer manager, LCD, analog to digital converter, amplifier, the electrical level polar converter, voltage stabilizer, power supervisor, voltage monitor, reaction test signal port and key-press module, wherein, the reaction test signal port links to each other with analog to digital converter through amplifier, three I/O pins of analog to digital converter, be CLK, Dout and CS respectively with one-chip computer in the P5.3 of P5 mouth, P5.6 links to each other with P5.5, three I/O pins of LCD, be WR, DATA and CS respectively with one-chip computer in I/O mouth P5.1, P5.2 links to each other with P6.7, three I/O pins of storer, be WC, SCL and SDA respectively with one-chip computer in I/O mouth P6.2, P6.3 links to each other with P6.4, three I/O pins of timer manager, be SCLK, I/O and RESET respectively with one-chip computer in I/O mouth P6.1, P5.6 links to each other with P6.5, the output VBAT of voltage monitor links to each other with the I/O mouth P5.0 of one-chip computer, the V+ of electrical level polar converter and Vout pin link to each other with the 4th pin with the 8th of amplifier respectively, the Vref pin of the output pin connection mode number converter of voltage stabilizer, voltage monitor and reaction test signal port, the output of key-press module links to each other with the I/O mouth P6.6 of one-chip computer, power supervisor provides the two-way voltage swing different power supplys, wherein one the tunnel and one-chip computer, storer, timer manager, LCD and analog to digital converter link to each other, other one the tunnel and amplifier, the electrical level polar converter, voltage stabilizer, voltage monitor links to each other.
Adopt 1K resistance to link to each other between the pin VDD of LCD and VLCD, sampling resistor in the reaction test signal port is that grade of errors is 1% 60K precision resistance, voltage stabilizer is respectively 3K fixed resistance, 2.2K adjustable resistance and 33K fixed resistance for the resistance in the series loop that the Vref pin of analog to digital converter provides reference voltage, and voltage stabilizer is respectively 10K fixed resistance, 2.2K adjustable resistance and 100 Ω fixed resistances for the resistance in the series loop that reaction test signal port 11 provides response voltage.
Described singlechip CPU adopts the EM78P458 cake core; LCD adopts the HT1621 cake core; Storer E
2PROM adopts the HT24LC08 cake core; Timer manager adopts the HT1380 cake core.
The present invention has substantive distinguishing features and marked improvement, and the present invention has mainly adopted four technical measures: 1) realizing under the prerequisite of required function, adopting that function is strong, compact conformation and cheap components and parts.2) by increasing the data base administration that the hardware capability module has realized the historical test data record of blood sugar concentration.3) design the lowering apparatus power consumption by optimizing power supply.4) make full use of software function and simplify hardware circuit, be user-friendly to.The present invention has adopted abovementioned technology to make the portable glucose meter controller, has multiple functional, compact conformation, is convenient for carrying, advantages of simple operation.
Description of drawings
Fig. 1 structural representation of the present invention
Fig. 2 circuit circuit diagram of the present invention
Embodiment
As depicted in figs. 1 and 2, the present invention includes: one-chip computer 1, storer 2, timer manager 3, LCD 4, analog to digital converter 5, amplifier 6, electrical level polar converter 7, voltage stabilizer 8, power supervisor 9, voltage monitor 10, reaction test signal port 11 and key-press module 12; Wherein, at first by the start of key-press module 12 control instruments, start back instrument is in the detection waiting status, and apply a certain size constant operating voltage at the enzyme electrode two ends by reaction test signal port 11, reaction beginning back is imported the kinetic current signal Ix of enzyme electrode by reaction test signal port 11, after amplifier 6 amplifies, send into analog to digital converter 5 and be converted to digital quantity, read transformation result by one-chip computer 1 again and finish the calculating of concentration of glucose, by LCD 4 test result is shown at last.In order to save the instrument volume, adopted number of pins few, based on the serial a/d and the LCD of spi bus, in addition, in order further to improve the cost performance of instrument, one-chip computer has adopted novel inexpensive, low-power scm EM78P458.
As shown in Figure 2, circuit circuit diagram of the present invention has also additionally increased by two independently functional modules except that comprising the basic test circuit, i.e. storer 2 and timer manager 3.The introducing of these two functional modules is preserved the blood glucose test result of (as three months) in a period of time and test as historical record constantly one by one, the user only need can conveniently inquire about former test result by key-press module 12 during operation, has made things convenient for the Continuous Tracking supervision of user to blood sugar concentration.
In addition, in order to reduce power consumption, the present invention has designed two voltage out-put supply managers 9, wherein one tunnel output 3.3V voltage is given one-chip computer 1, storer 2, timer manager 3, LCD 4 and analog to digital converter 5, other one tunnel output 5V voltage is given amplifier 6, electrical level polar converter 7, voltage stabilizer 8, voltage monitor 10 reaches the purpose that reduces power consumption by the operating voltage that reduces chips more than half.Adopt 3.3V voltage rather than the required 5V voltage of conventional digital chip to power to the charged module under the system hibernates state (comprising one-chip computer 1 and timer manager 3), further reduced the system power dissipation under the park mode.
The present invention makes full use of software function, has reduced hardware cost.For example, calibration function is exactly to be realized by software, has promptly adopted test result offset correction method to come the calibration testing result in program.
Claims (6)
1, a kind of portable glucose meter controller, comprise: one-chip computer (1), LCD (4), analog to digital converter (5), amplifier (6), electrical level polar converter (7), voltage stabilizer (8), voltage monitor (10), reaction test signal port (11) and key-press module (12), it is characterized in that also comprising: storer (2), timer manager (3), power supervisor (9), wherein, reaction test signal port (11) links to each other with analog to digital converter (5) through amplifier (6), three I/O pins of analog to digital converter (5), be CLK, Dout and CS respectively with one-chip computer (1) in the P5.3 of P5 mouth, P5.6 links to each other with P5.5, three I/O pins of LCD (4), be WR, DATA and CS respectively with one-chip computer (1) in I/O mouth P5.1, P5.2 links to each other with P6.7, three I/O pins of storer (2), be WC, SCL and SDA respectively with one-chip computer (1) in I/O mouth P6.2, P6.3 links to each other with P6.4, three I/O pins of timer manager (3), be SCLK, I/O and RESET respectively with one-chip computer (1) in I/O mouth P6.1, P5.6 links to each other with P6.5, the output VBAT of voltage monitor (10) links to each other with the I/O mouth P5.0 of one-chip computer (1), the V+ of electrical level polar converter (7) and Vout pin link to each other with the 4th pin with the 8th of amplifier (6) respectively, the Vref pin of the output pin connection mode number converter (5) of voltage stabilizer (8), voltage monitor (10) and reaction test signal port (11), the output of key-press module (12) links to each other with the I/O mouth P6.6 of one-chip computer (1), power supervisor (9) provides the two-way power supply, wherein one the tunnel with one-chip computer (1), storer (2), timer manager (3), LCD (4) and analog to digital converter (5) link to each other, other one the tunnel with amplifier (6), electrical level polar converter (7), voltage stabilizer (8), voltage monitor (10) links to each other.
2, portable glucose meter controller according to claim 1 is characterized in that, adopts 1K resistance to link to each other between the pin VDD of LCD (4) and VLCD; Sampling resistor in the reaction test signal port (11) is that grade of errors is 1% 60K precision resistance; Voltage stabilizer (8) is respectively 3K fixed resistance, 2.2K adjustable resistance and 33K fixed resistance for the resistance in the polyphone loop that the Vref pin of analog to digital converter (5) provides reference voltage; Voltage stabilizer (8) is respectively 10K fixed resistance, 2.2K adjustable resistance and 100 Ω fixed resistances for the resistance in the polyphone loop that reaction test signal port (11) provides response voltage.
3, portable glucose meter controller according to claim 1 is characterized in that, described one-chip computer (1) CPU adopts the EM78P458 cake core.
4, portable glucose meter controller according to claim 1 is characterized in that, described LCD (4) adopts the HT1621 cake core.
5, portable glucose meter controller according to claim 1 is characterized in that, described storer (2) E
2PROM adopts the HT24LC08 cake core.
6, portable glucose meter controller according to claim 1 is characterized in that, described timer manager (3) adopts the HT1380 cake core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03116986 CN1234322C (en) | 2003-05-16 | 2003-05-16 | Controller of portable blood sugar instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03116986 CN1234322C (en) | 2003-05-16 | 2003-05-16 | Controller of portable blood sugar instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1472535A true CN1472535A (en) | 2004-02-04 |
| CN1234322C CN1234322C (en) | 2006-01-04 |
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ID=34152646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03116986 Expired - Fee Related CN1234322C (en) | 2003-05-16 | 2003-05-16 | Controller of portable blood sugar instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1234322C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304844C (en) * | 2004-12-09 | 2007-03-14 | 上海交通大学 | Portable blood sugar meter with blood sugar concentration trend curve display |
| CN102008294A (en) * | 2010-06-29 | 2011-04-13 | 上海杰人信息科技有限公司 | Electronic terminal with disease detecting function |
| CN102854230A (en) * | 2012-09-04 | 2013-01-02 | 南京工业大学 | Biological detector |
| CN103389333A (en) * | 2013-07-19 | 2013-11-13 | 东南大学 | Composite nano-material-modified electrode-based novel blood sugar rapid-detection device |
| CN104619239A (en) * | 2012-09-25 | 2015-05-13 | 泰尔茂株式会社 | Biological information measurement device and method for controlling same |
-
2003
- 2003-05-16 CN CN 03116986 patent/CN1234322C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304844C (en) * | 2004-12-09 | 2007-03-14 | 上海交通大学 | Portable blood sugar meter with blood sugar concentration trend curve display |
| CN102008294A (en) * | 2010-06-29 | 2011-04-13 | 上海杰人信息科技有限公司 | Electronic terminal with disease detecting function |
| CN102854230A (en) * | 2012-09-04 | 2013-01-02 | 南京工业大学 | Biological detector |
| CN102854230B (en) * | 2012-09-04 | 2014-08-13 | 南京工业大学 | Biological detector |
| CN104619239A (en) * | 2012-09-25 | 2015-05-13 | 泰尔茂株式会社 | Biological information measurement device and method for controlling same |
| CN104619239B (en) * | 2012-09-25 | 2017-03-08 | 泰尔茂株式会社 | Biometric information measuring device and its control method |
| CN103389333A (en) * | 2013-07-19 | 2013-11-13 | 东南大学 | Composite nano-material-modified electrode-based novel blood sugar rapid-detection device |
| CN103389333B (en) * | 2013-07-19 | 2016-03-30 | 东南大学 | A kind of blood sugar device for fast detecting based on composite nanometer material modified electrode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1234322C (en) | 2006-01-04 |
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Granted publication date: 20060104 Termination date: 20110516 |