CN103815879B - Electronic clinical thermometer and precision regulation method thereof - Google Patents
Electronic clinical thermometer and precision regulation method thereof Download PDFInfo
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- CN103815879B CN103815879B CN201410080146.1A CN201410080146A CN103815879B CN 103815879 B CN103815879 B CN 103815879B CN 201410080146 A CN201410080146 A CN 201410080146A CN 103815879 B CN103815879 B CN 103815879B
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- glass rod
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- clinical thermometer
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Abstract
The present invention relates to a kind of medical apparatus and instruments.The inconvenience existing when reading for solving tradition clinical thermometer, the present invention provides a kind of electronic clinical thermometer, including a tradition clinical thermometer, described traditional clinical thermometer includes vacuole and is connected fixing glass rod with vacuole, glass rod is provided with graduation mark, it is characterized in that: described vacuole wall is contained within critesistor, be contained within the carbon film wire being connected with critesistor at glass rod bar wall, this carbon film wire extends to glass rod rear end and is connected with the electrode of rear end；Also include that an intelligent controller, described electrode are connected with intelligent controller, be provided with LED display window on the surface of intelligent controller.This electronic clinical thermometer reading is directly perceived, convenient, it is ensured that the accuracy of electronic surveying.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, specifically refer to a kind of electronic clinical thermometer and precision regulation method thereof.
Background technology
When tradition clinical thermometer operation principle is to survey body temperature, the hydrargyrum in vacuole, volumetric expansion of being heated, hydrargyrum can be risen to pipe certain position interior by neck portion, and when reaching thermal balance with body temperature, mercury column is constant.Body temperature reading is carried out now by the scale on clinical thermometer glass wall, owing to the scale interval on glass wall is less, it is inconvenient for when reading, needs constantly to rotate clinical thermometer and utilize the enlarging function of glass wall that mercury column is amplified, even so, also easily mistake is caused when reading.
Summary of the invention
The inconvenience existing when reading for solving tradition clinical thermometer, the present invention provides a kind of and improves formed electronic clinical thermometer on the basis of tradition clinical thermometer.
For realizing above-mentioned technical purpose, the technical solution used in the present invention is: electronic clinical thermometer, including a tradition clinical thermometer, described traditional clinical thermometer includes vacuole and is connected fixing glass rod with vacuole, glass rod is provided with graduation mark, it is characterized in that: described vacuole wall is contained within critesistor, be contained within the carbon film wire being connected with critesistor at glass rod bar wall, this carbon film wire extends to glass rod rear end and is connected with the electrode of rear end；Also include that an intelligent controller, described electrode are connected with intelligent controller, be provided with LED display window on the surface of intelligent controller.
Described intelligent controller include pedestal and with the display block that pedestal is fixed as one, be provided with Intelligent control board inside pedestal, bottom described pedestal, be provided with the glass rod that caves in insert chamber, at the bottom of glass rod inserts the chamber in chamber, be provided with electrode jack；Described LED display window is positioned on display block.
Described Intelligent control board includes CPU module and display module, described CPU module uses LPC2142 chip, described display module uses MC14489 chip, the magnitude of voltage at its two ends is delivered to AD0.1 input pin formation digital signal after chip internal A/D changes of LPC2142 chip by described critesistor by electrode, this digital signal delivers to MC14489 chip by the serial port of LPC2142 chip after treatment, MC14489 chip drives LED shown on LED display window by numerical value.
Described intelligent controller surface is provided with and arranges button, and this intelligent controller can adjust the show value of LED display window to adjust certainty of measurement with the temperature value shown by glass rod high scale line as reference value by arranging button.
Described arrange button include " SET " key, "+" key and " " key.
A kind of intelligent controller is for the method for adjustment of this electronic clinical thermometer precision, the temperature range of 32-42 DEG C is calculated in units of 1 DEG C the temperature of per unit and the function ratio of critesistor both end voltage change, it is designated as K0, 10 K0 values are deposited in processor, then shown temperature value is adjusted to the temperature value shown by glass rod bar wall high scale line, calculate the function ratio of the temperature between the lowerinteger value that the temperature value after adjustment is adjacent and the change of critesistor both end voltage, it is designated as K1, calculate the function ratio of the temperature between the big integer value that the temperature value after adjustment is adjacent and the change of critesistor both end voltage, it is designated as K2, K0=((K1+K2)/2+K0)/2.
After this electronic clinical thermometer employing said structure, when measuring body temperature, reading is directly perceived, convenient, the result of electronic surveying can be compared with conventional temperature meter reading simultaneously, and by comparison result, the precision of electronic surveying can be adjusted, it is ensured that the accuracy of electronic surveying.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of this electronic clinical thermometer.
Accompanying drawing 2 is the structural representation of intelligent controller.
Accompanying drawing 3 is the electronic-circuit diagram of intelligent controller.
Accompanying drawing 4 is the characteristic curve of critesistor resistance and temperature.
Accompanying drawing 5 controls program flow diagram for intelligent controller.
Accompanying drawing 6 adjusts subroutine flow chart for intelligent controller precision.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.
As shown in Figure 1, electronic clinical thermometer, including a tradition clinical thermometer, described traditional clinical thermometer includes vacuole 1 and is connected fixing glass rod 2 with vacuole, and glass rod is provided with graduation mark 3.
As shown in Figure 1, being contained within critesistor 4 at vacuole wall, be contained within the carbon film wire 5 being connected with critesistor at glass rod bar wall, this carbon film wire 5 extends to glass rod rear end and is connected with the electrode 6 of rear end.
As shown in accompanying drawing 1 and accompanying drawing 2, also include an intelligent controller 7, this intelligent controller 7 includes pedestal 7-1 and the display block 7-2 being fixed as one with pedestal, Intelligent control board it is provided with inside pedestal, bottom described pedestal, it is provided with a glass rod caved in inserts chamber 7-11, at the bottom of glass rod inserts the chamber in chamber, it is provided with electrode jack 7-12, LED display window 7-21 be positioned on display block 7-2.
As shown in accompanying drawing 1 and accompanying drawing 2, the tail end of the glass rod 2 of clinical thermometer is inserted in the insertion chamber 7-11 of intelligent controller base, electrode 6 achieves the connection of critesistor 4 and intelligent controller 7 in being inserted into electrode jack 7-12, the resistance of critesistor 4 produces change according to the change of ambient temperature, and intelligent controller 7 calculates ambient temperature according to the change of this resistance and shown on LED display window 7-21 by this temperature value.
According to foregoing description, intelligent controller should comprise a Single Chip Microcomputer (SCM) system, and single-chip microcomputer can be selected for Multiple Type, such as MSC51 series, PIC series etc..In the present embodiment, preferred ARM microprocessor LPC2142 of single-chip microcomputer, the preferred MC14489 of display module, and as a example by above two chip, carry out the detailed description of circuit.
As shown in Figure 3, + 5V power supply is connect again after resistance R4 on critesistor NTC series winding, taking NTC both end voltage and send into the AD0.1(P0.28 of LPC2142) pin carries out A/D conversion, and the result of conversion carries out showing in real time of temperature by synchronizations, full duplex serial SPI interface (MOS, Scko, Sselo pin in accompanying drawing) output to MC14489.
As shown in Figure 4, critesistor resistance is an exponential curve with the characteristic curve of temperature, therefore the magnitude of voltage at critesistor two ends and the characteristic curve of temperature corresponding be also an exponential curve, it is non-linear bigger, in less demanding being normally applied, often make temperature within the specific limits linear with resistance it is assumed that to simplify calculating.Frequently with computing formula be: T=T0-KVt, wherein T is for treating testing temperature, T0 is the temperature parameter (as shown in T0 in accompanying drawing 6) relevant with critesistor, Vt is the voltage at critesistor two ends, K is the linear scale of temperature and Vt, it follows that after determining T0, K and Vt value, it is easy to calculate the ambient temperature residing for critesistor.And with reference to the accompanying drawings shown in 6, after critesistor is selected, its T0 value, it was determined that Vt value can obtain by measuring, it is critical only that the determination of K value, the determination of K value are directly connected to the precision measured.Owing to Vt and temperature characterisitic are to use the linear relationship supposed to calculate, therefore the excursion of temperature is the least, and it is closer to linear relationship.In the calculating of the present embodiment, the excursion of temperature is determined between 32-42 DEG C, this range of temperature is divided into 10 sections with 1 DEG C, every section takes single K value and calculates, K value is identified as K0-1, K0-2 ... .K0-10, Vt determines 11 some place values between 32-42 DEG C, is identified as V32, V33 ... V42.As when the Vt value recorded is between 36-37 DEG C, now V37 < Vt < V36, K value selectes K0-5, now T=T0-K0-5*Vt accordingly.
Seen from the above description, although the excursion of temperature is divided into 10 parts, corresponding K value is identified as K0-1, K0-2 ... K0-10, but in the excursion of 1 DEG C, Vt and temperature characterisitic are still exponential curve, the most still can cause the error between electronic surveying and physical measurement, for reducing this error further, present embodiments provide a kind of method that electronic surveying precision adjusts.
As shown in accompanying drawing 1 and accompanying drawing 2, it is provided with on intelligent controller surface and button 8 is set, arrange button include " SET " key, "+" key and " " key, during adjustment, with the temperature value shown by glass rod high scale line as reference value, by " SET " key, "+" show value of LED display window is adjusted to physical measurements values by the united application of key and " " key.
After LED reality window show value adjusts, in the processing method within intelligent controller it is: be 36.5 DEG C with measured T value, as a example by physical measurements values is 36.8 DEG C, the T value of LED display window is adjusted to 36.8 DEG C.The Vt value determined inside intelligent controller is between V37-V36, and K value is defined as K0-5, needs to redefine the value of K0-5 after now adjusting, and according to the assignment statement in computer program, the assignment formula of K0-5 is: K0-5=((K1+K2)/2+K0-5)/2.Wherein K1=(Vt-V37)/2, K2=(V36-Vt)/2.In like manner, when the Vt value recorded is between other two some place values, K value is redefined with reference to said method.
Thus can draw a kind of intelligent controller method of adjustment for this electronic clinical thermometer precision, the temperature range of 32-42 DEG C is calculated in units of 1 DEG C the temperature of per unit and the function ratio of critesistor both end voltage change, it is designated as K0, 10 K0 values are deposited in processor, then shown temperature value is adjusted to the temperature value shown by glass rod bar wall high scale line, calculate the function ratio of the temperature between the lowerinteger value that the temperature value after adjustment is adjacent and the change of critesistor both end voltage, it is designated as K1, calculate the function ratio of the temperature between the big integer value that the temperature value after adjustment is adjacent and the change of critesistor both end voltage, it is designated as K2, K0=((K1+K2)/2+K0)/2.
Accompanying drawing 5 and accompanying drawing 6 show that this intelligent controller controls program flow diagram and precision adjusts subroutine flow chart.
As shown in Figure 5, intelligent controller obtain electric after first carry out initialization process, then A/D conversion is started, the Vt value recorded is converted to temperature value send LED display module to and show, determine whether when LED shows to carry out precision adjustment, as adjusted, call precision and adjust subprogram, otherwise go to A/D conversion and be circulated.
As shown in Figure 6, when carrying out precision and adjusting, read adjusted value, determine that Vt point position is interval, calculate aforesaid K1 and K2 respectively, again the K value that this some position is interval is carried out assignment.
Using above-mentioned precision regulation method, the error result of electronic surveying and physical measurement can be decreased between 0.05 DEG C substantially, and when using one decimal of reservation to show, electronic surveying result can keep consistent with physical measurements.
This electronic clinical thermometer due to be tradition clinical thermometer on the basis of improve, the result of electronic surveying can be compared with conventional temperature meter reading, clinical thermometer glass rod and intelligent controller are socket connection mode, when after glass rod or vacuole generation breakage, can directly be replaced, readjust certainty of measurement by the adjustment button on intelligent controller.
Claims (2)
1. electronic clinical thermometer, including a tradition clinical thermometer, described traditional clinical thermometer includes vacuole and is connected fixing glass rod with vacuole, glass rod is provided with graduation mark, it is characterized in that: described vacuole wall is contained within critesistor, be contained within the carbon film wire being connected with critesistor at glass rod bar wall, this carbon film wire extends to glass rod rear end and is connected with the electrode of rear end；Also include that an intelligent controller, described electrode are connected with intelligent controller, be provided with LED display window on the surface of intelligent controller；Described intelligent controller include pedestal and with the display block that pedestal is fixed as one, be provided with Intelligent control board inside pedestal, bottom described pedestal, be provided with the glass rod that caves in insert chamber, at the bottom of glass rod inserts the chamber in chamber, be provided with electrode jack；Described LED display window is positioned on display block；Described Intelligent control board includes CPU module and display module, described CPU module uses LPC2142 chip, described display module uses MC14489 chip, the magnitude of voltage at its two ends is delivered to AD0.1 input pin formation digital signal after chip internal A/D changes of LPC2142 chip by described critesistor by electrode, this digital signal delivers to MC14489 chip by the serial port of LPC2142 chip after treatment, MC14489 chip drives LED shown on LED display window by numerical value；Described intelligent controller surface is provided with and arranges button, and this intelligent controller can adjust the show value of LED display window to adjust certainty of measurement with the temperature value shown by glass rod high scale line as reference value by arranging button；Described arrange button include " SET " key, "+" key and " " key.
null2. the method for adjustment of the electronic clinical thermometer precision described in a claim 1，The temperature range of 32-42 DEG C is calculated in units of 1 DEG C the temperature of per unit and the function ratio of critesistor both end voltage change，It is designated as K0，10 K0 values are deposited in processor，Then shown temperature value is adjusted to the temperature value shown by glass rod bar wall high scale line，Calculate the function ratio of the temperature between the lowerinteger value that the temperature value after adjustment is adjacent and the change of critesistor both end voltage，It is designated as K1，Calculate the function ratio of the temperature between the big integer value that the temperature value after adjustment is adjacent and the change of critesistor both end voltage，It is designated as K2，Calculate the K0 value made new advances and be designated as K0 '，K0 '=((K1+K2)/2+K0)/2,Original K0 value K0 ' is replaced.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410080146.1A CN103815879B (en) | 2014-03-06 | 2014-03-06 | Electronic clinical thermometer and precision regulation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410080146.1A CN103815879B (en) | 2014-03-06 | 2014-03-06 | Electronic clinical thermometer and precision regulation method thereof |
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| CN103815879A CN103815879A (en) | 2014-05-28 |
| CN103815879B true CN103815879B (en) | 2016-08-24 |
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| CN108225609A (en) * | 2017-12-29 | 2018-06-29 | 赵明灯 | A kind of temperature patch based on LED digital display screen displays temperatures |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395478A (en) * | 2000-01-18 | 2003-02-05 | 爱德华兹生命科学公司 | Device and method measuring temp. of patient |
| CN103385700A (en) * | 2013-08-02 | 2013-11-13 | 王卫东 | High-precision rapid self-calibration wireless electronic thermometer |
| CN203943652U (en) * | 2014-03-06 | 2014-11-19 | 曲新艳 | Electronic clinical thermometer |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395478A (en) * | 2000-01-18 | 2003-02-05 | 爱德华兹生命科学公司 | Device and method measuring temp. of patient |
| CN103385700A (en) * | 2013-08-02 | 2013-11-13 | 王卫东 | High-precision rapid self-calibration wireless electronic thermometer |
| CN203943652U (en) * | 2014-03-06 | 2014-11-19 | 曲新艳 | Electronic clinical thermometer |
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Inventor after: Liu Xianghong Inventor after: Lang Yujie Inventor after: Li Xiaoying Inventor after: Kang Lili Inventor after: Zhuang Yuanhua Inventor before: Qu Xinyan Inventor before: Qu Xiangyun |
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Effective date of registration: 20160718 Address after: 250022 Ji'nan Road, Shandong, No. ten, No. 23976 Applicant after: Jinan Children's Hospital Address before: 264300 Shandong city of Weihai province Rongcheng Chengshan Avenue East No. 101 Applicant before: Qu Xinyan |
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Inventor after: Yan Jun Inventor after: Wang Fengyan Inventor before: Liu Xianghong Inventor before: Lang Yujie Inventor before: Li Xiaoying Inventor before: Kang Lili Inventor before: Zhuang Yuanhua |
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Effective date of registration: 20170818 Address after: 153000, Yichun friendship zone, Xinjie street, Tiedong Committee, Heilongjiang 5 Co-patentee after: Wang Fengyan Patentee after: Yan Jun Address before: 250022 Ji'nan Road, Shandong, No. ten, No. 23976 Patentee before: Jinan Children's Hospital |
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Effective date of registration: 20180319 Address after: Haimen Changle Town Jiangsu city of Nantong Province on the 226100 Road No. 207 Patentee after: HAIMEN THE YUECAI TEXTILE TECHNOLOGY Co.,Ltd. Address before: 153000, Yichun friendship zone, Xinjie street, Tiedong Committee, Heilongjiang 5 Co-patentee before: Wang Fengyan Patentee before: Yan Jun |
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