CN87208357U - Preheating electronic clinical thermometer - Google Patents
Preheating electronic clinical thermometer Download PDFInfo
- Publication number
- CN87208357U CN87208357U CN 87208357 CN87208357U CN87208357U CN 87208357 U CN87208357 U CN 87208357U CN 87208357 CN87208357 CN 87208357 CN 87208357 U CN87208357 U CN 87208357U CN 87208357 U CN87208357 U CN 87208357U
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- CN
- China
- Prior art keywords
- temperature
- circuit
- clinical thermometer
- probe
- temperature measurement
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- Expired - Lifetime
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- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
The utility model relates to a preheating electronic clinical thermometer is composed of a temperature probe and a circuit. The temperature probe is provided with a temperature sensor made of a thermistor or a PN junction, and a heating element. The related circuit preheats the temperature probe through the heating element in order to approach to the temperature scale measured. The heated thermometer shortens the time of temperature measurement when the temperature is measured. The utility model has the advantages of simple principle, low cost, high precision, convenient operation and short time of the temperature measurement. The preheating electronic clinical thermometer can be widely used for measuring the temperature of human bodies or animals.
Description
The present invention relates to a kind of clinical thermometer, particularly a kind of electronic thermometer that utilizes preheating method to realize quick take temperature.
No matter existing clinical thermometer is mercury clinical thermometer or ordinary electronic clinical thermometer, all needs the long thermometric time.And the existing a kind of clinical thermometer that can realize quick temperature measurement needs to adopt system controlled by computer can obtain good result.Obviously, such clinical thermometer technical sophistication, cost is higher, is difficult to apply.If without system controlled by computer, and realize quick temperature measurement with the method that adds modified value, though technology is simplified, error is bigger, and effect is bad.External several typical electronic clinical thermometer technical feature is seen " MEDICAL ELECTRONICS ", in June, 1986.
The objective of the invention is for the electronic thermometer of the quick take temperature of energy that a kind of technology is simple, with low cost, error is less is provided.
Recognize that at present the initial temperature of the temperature probe of clinical thermometer is one of key factor that influences thermometric speed.The present invention utilizes pre-heated thermometric mode.By the temperature probe preheating is realized the quick measurement of body temperature on a temperature value near body temperature.
If body temperature is t
1, the initial temperature of temperature probe is t
2, the thermal capacitance of measured body is C
1, the thermal capacitance of temperature probe is C
2, then the temperature value that records of temperature probe is:
t＝t
1－ (C
2)/(C
1+C
2) （t
1－t
2）
As seen, as (t
1-t
2) heal when big (t
1-t) also big, it is also longer promptly to reach the needed time of balance between temperature probe and the measured body, thereby makes the thermometric time lengthening.Otherwise, the thermometric time is shortened.
In order to shorten the thermometric time, the present invention has adopted preheating method to realize quick temperature measurement.Be that the present invention is made up of temperature probe (1), temperature measurement circuit (2), temperature display panel (3), thermometric switch (4), timing circuit (5), heating control circuit (6) and heater circuit (7).It is characterized in that having an energy to realize the temperature probe (1) of quick temperature measurement by preheating method.It is connected with temperature measurement circuit (2) with heater circuit (7) respectively by lead, temperature sensor (8), temperature measurement circuit (2), temperature display panel (3) constitutes the temperature measurement signal loop, temperature sensor (8), temperature measurement circuit (2), heating control circuit (6) and heater circuit (7) and heating element (9) constitute the heating signal loop.Wherein temperature probe (1) constitutes by having a temperature sensor (8) and the heating element (9) made from the thermistor or the PN junction of thermal characteristics.Temperature measurement circuit (2) is made up of three and half analog digital converters and relevant resistance.Temperature display circuit (3) is made up of three and half LCD panel, 3 1/2 N39, thermometric switch (4) is a pushbutton switch, timing circuit (5) is made of 14 binary string linage-counter/frequency dividers of CMOS integrated circuit and two J-K flip flop, heating control circuit (6) is made up of CMOS integrated circuit 4 Sheffer stroke gates 4 biconditional gates, and heater circuit (7) is made up of transistor and relevant resistance.Heating element (9) connects heater circuit (7) and passes through heating element (9) to temperature probe (1) preheating, makes the temperature of temperature probe (1) reach a setting value near measured body body temperature.Then, again temperature probe (1) is placed tested position.Therefore approaching with the temperature of measured body to the initial temperature of temperature probe (1), so temperature probe (1) can reach thermal equilibrium rapidly with measured body.Thereby realized quick temperature measurement.
The present invention uses through hospital clinical 150 examples, and when carrying out human oral cavity, anus thermometric, the thermometric time, error was ± 0.1 ℃ less than 30 seconds.Have quick, accurate, safe characteristics.
Below with reference to accompanying drawing invention is further described.
Fig. 1 is the temperature probe sectional view.This figure accompanying drawing that can make an abstract.
Fig. 2 is principle of the invention figure.
See figures.1.and.2, after energized, heater circuit (7) is started working.When the temperature of being experienced when the temperature sensor of being made by thermistor or PN junction (8) in the temperature probe (1) was lower than of setting near the temperature value of measured body mean body temperature, heater circuit (7) was heated temperature probe (1) by the heating element of being made by thermistor or PN junction (8) by lead (11).So temperature probe (1) is preheated on this temperature value near measured body body temperature very soon, and the guarantor connects constant.Then, temperature probe (1) is placed tested position, open thermometric switch (4), temperature measurement circuit (2) is started working, and by heating control circuit (6), heater circuit (7) is quit work.Simultaneously, timing circuit (5) to the thermometric process regularly.When finishing a measurement of bldy temperature (less than 30 seconds), temperature display panel (3) shows the body temperature numerical value that records.At this moment, temperature probe (1) returns automatically again and places under the preheat mode, prepares to measure next time.
Therefore simple, with low cost owing to the principle of the invention, as not to be subjected to natural environment temperature impact has higher practical value.
Claims (2)
1, a kind of pre-heated electronic thermometer of being formed by temperature probe [1], temperature measurement circuit [2], temperature display panel [3], thermometric switch [4], timing circuit [5], heating control circuit [6] and heater circuit [7], it is characterized in that having an energy to realize the temperature probe [1] of quick temperature measurement by preheating method, it connects with heater circuit [7] and temperature measurement circuit [2] respectively by lead, temperature sensor [8], temperature measurement circuit [2], temperature display panel [3] constitutes the temperature measurement signal loop; Temperature sensor [8], temperature measurement circuit [2], heating control circuit [6] and heater circuit [7] and heating element [9] constitute the heating signal loop.
2, the described clinical thermometer of claim 1, a temperature sensor (8) and a heating element (9) that its temperature probe (1) is made by thermistor or PN junction constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87208357 CN87208357U (en) | 1987-05-19 | 1987-05-19 | Preheating electronic clinical thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87208357 CN87208357U (en) | 1987-05-19 | 1987-05-19 | Preheating electronic clinical thermometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87208357U true CN87208357U (en) | 1988-09-21 |
Family
ID=4823641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87208357 Expired - Lifetime CN87208357U (en) | 1987-05-19 | 1987-05-19 | Preheating electronic clinical thermometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87208357U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443871C (en) * | 2001-04-11 | 2008-12-17 | 欧姆龙健康医疗事业株式会社 | Electronic thermometer |
| CN101187586B (en) * | 2006-11-15 | 2010-08-18 | 深圳迈瑞生物医疗电子股份有限公司 | Probe heating circuit of quick body temperature measuring device |
| CN104068831A (en) * | 2014-01-17 | 2014-10-01 | 胡晓存 | Intelligent thermometer |
-
1987
- 1987-05-19 CN CN 87208357 patent/CN87208357U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443871C (en) * | 2001-04-11 | 2008-12-17 | 欧姆龙健康医疗事业株式会社 | Electronic thermometer |
| CN101187586B (en) * | 2006-11-15 | 2010-08-18 | 深圳迈瑞生物医疗电子股份有限公司 | Probe heating circuit of quick body temperature measuring device |
| CN104068831A (en) * | 2014-01-17 | 2014-10-01 | 胡晓存 | Intelligent thermometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |