CN109632143B - Self-calibration thermometer - Google Patents
Self-calibration thermometer Download PDFInfo
- Publication number
- CN109632143B CN109632143B CN201910058214.7A CN201910058214A CN109632143B CN 109632143 B CN109632143 B CN 109632143B CN 201910058214 A CN201910058214 A CN 201910058214A CN 109632143 B CN109632143 B CN 109632143B
- Authority
- CN
- China
- Prior art keywords
- thermometer
- temperature
- calibration
- end cover
- self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/20—Clinical contact thermometers for use with humans or animals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/20—Clinical contact thermometers for use with humans or animals
- G01K13/223—Infrared clinical thermometers, e.g. tympanic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The present invention provides a self-calibrating thermometer, comprising: the thermometer comprises a thermometer body and an end cover, wherein the thermometer body is provided with a temperature measuring end, an accommodating space for accommodating the temperature measuring end is arranged in the end cover, and the end cover comprises an outer shell, an inner shell and a fixing point material positioned between the outer shell and the inner shell. According to the invention, the fixed point material in the end cover is melted by using heating methods such as a convenient hand covering method, a hydrothermal method and the like, so that the reproduction of a miniature fixed point is completed, the rapid calibration of temperature is realized, and the accuracy of temperature measurement is improved.
Description
Technical Field
The present invention relates to a thermometer, and more particularly to a thermometer capable of self-calibration.
Background
The thermometer is used for the diagnosis of the patient condition by doctors, particularly for the treatment of fever of infants, and the patients do not need to take antipyretic when the temperature is lower than 38.5 ℃. The world health organization recommends that the use of antipyretics is necessary only if the body temperature is higher than 38.5 ℃. In this case, it is important to accurately measure the body temperature of the patient. In addition, in the long-term monitoring of the daily body temperature, if the basic body temperature of a female is measured, the deviation of the daily temperature measurement is avoided under the condition of different dates, and at the moment, the requirement on the temperature measurement accuracy of the thermometer is provided.
However, in the common thermometers in the market, such as glass mercury thermometers, electronic thermometers, ear thermometers, multifunctional infrared thermometers, etc., among them, the glass mercury thermometers are easily damaged to cause mercury pollution, and when in use, due to the influence of many factors such as the age limit of the patient and the contact way, and the minimum scale is generally 0.1 ℃, the measurement accuracy is low; the electronic thermometer, the infrared thermometer and other thermometers obtain specific thermometers through the circuit, although the thermometers are relatively simple and convenient to use, temperature deviation can be generated in practical use, and the measured temperature is high or low, so that the accuracy of measurement is influenced.
Therefore, it is an urgent problem to provide a thermometer with a circuit structure, which can be calibrated quickly and conveniently to ensure the accuracy of measurement.
Disclosure of Invention
The invention aims to provide a thermometer with a calibration device, which can be quickly and conveniently calibrated in use and ensure the accuracy of measurement.
The present invention provides a self-calibrating thermometer, comprising: the thermometer comprises a thermometer body and an end cover, wherein the thermometer body is provided with a temperature measuring end, an accommodating space for accommodating the temperature measuring end is arranged in the end cover, and the end cover comprises an outer shell, an inner shell and a fixing point material positioned between the outer shell and the inner shell.
Wherein, the inner shell is formed with a calibration space, the calibration space has an opening, the temperature measuring end carries out calibration at the position of the opening.
Wherein, the inner shell is formed with a calibration space, the temperature measuring end carries out the calibration in the calibration space.
Wherein, the shell is a graphite crucible protective shell.
Wherein, the fixing point material is a metal or nonmetal material.
Wherein the fixing point material is any one of Rb, pyruvic acid, n-iodoalkane, inorganic hydrated salt or paraffin substance.
Wherein the calibration space is a blackbody cavity.
The thermometer comprises a thermometer body and is characterized in that a shell of the thermometer body comprises a display screen, a temperature measuring button and a calibration button.
The thermometer body is internally provided with a temperature display module, a calibration circuit and a temperature measuring circuit.
Wherein, a heating component is arranged on the end cover.
The self-calibration thermometer is characterized in that a micro fixed point is added on the basis of the original thermometer, and the result of measuring the temperature value of the fixed point by the thermometer is compared with the temperature value of the fixed point, so that the calibration of the thermometer can be completed, and the accurate measurement of the temperature can be realized.
Drawings
FIG. 1 is a schematic structural diagram of a self-calibrating thermometer according to a first embodiment of the invention;
fig. 2 is a schematic structural diagram of a self-calibrating thermometer according to a second embodiment of the invention.
Detailed Description
To facilitate an understanding of the present invention, embodiments of the present invention will be described below with reference to the accompanying drawings, and it will be understood by those skilled in the art that the following descriptions are provided only for the purpose of illustrating the present invention and are not intended to specifically limit the scope thereof.
For a common electronic thermometer, in order to ensure the accuracy of temperature measurement, avoid the damage to a temperature measurement end and ensure the safety in a non-use state, an end cover matched with the temperature measurement end is arranged at the end part of the thermometer, and the end cover is used for protecting the temperature measurement end.
The first embodiment is as follows:
as shown in fig. 1, a self-calibrating thermometer 1 in the first embodiment of the present invention is provided, preferably, the self-calibrating thermometer 1 is configured to measure temperature in a non-contact manner, for example, an ear thermometer structure or an infrared thermometer structure, the self-calibrating thermometer 1 includes a thermometer body 2 and an end cover 3, the self-calibrating thermometer 1 includes a temperature measuring end 4, the temperature measuring end is configured to measure temperature in a non-contact manner, preferably, in a radiation temperature measuring manner, an accommodating space 5 for accommodating the temperature measuring end is provided in the end cover 3, and in a non-temperature measuring state, the temperature measuring end of the self-calibrating thermometer 1 is located in the accommodating space 5. The thermometer comprises a thermometer body, and is characterized in that a temperature display module, a calibration circuit and a temperature measurement circuit are arranged in the thermometer body, and a display screen, a temperature measurement button and a calibration button are correspondingly formed on a shell of the thermometer body 1.
The end cap 3 comprises a housing 6, the housing 6 is preferably a graphite crucible protective housing, the housing 6 has an inner space in which a metallic or non-metallic fixing point material 10 is disposed, preferably the fixing point material 10 has a recurrence point temperature between 30-45 degrees celsius, preferably the metallic or non-metallic material may be: rb (triple point 39.26 deg.C), pyruvic acid (triple point 36.3 deg.C), n-iodoalkane (triple point 36.48 deg.C), inorganic hydrated salt (melting point 35-40 deg.C), and paraffin substance (36-40 deg.C). The fixing point material 10 surrounds the inner shell 7, the fixing point material 10 is filled between the outer shell and the inner shell 7, the inner shell 7 is formed with a calibration space 9, the calibration space 9 can be a black body cavity, the calibration space 9 is provided with an opening, the temperature measuring end 4 of the self-calibration thermometer 1 is calibrated at the opening position or within a preset range from the opening position or can enter the calibration space of the inner shell 7 through the opening, a heat insulation layer 8 is arranged around the opening, and the heat insulation layer 8 is preferably made of glass fiber, asbestos, silicate and the like. The heat insulation layer 8 can isolate the influence of external heat radiation on the calibration of the thermometer. A sealed space is formed among the heat insulation layer 8, the inner shell 7 and the outer shell 6, and a fixing point material 10 is arranged in the sealed space.
The fixing point material 10 in the end cover 3 has a specific thermodynamic temperature value, and the following steps are adopted in the use process:
before actually measuring temperature, when the thermometer is to be calibrated, the temperature measuring end 4 of the thermometer is inserted into the opening position of the calibration space or a preset range from the opening position, and a calibration module is started by pressing a calibration button on the thermometer body 2;
and then the end cover 3 is heated, so that the fixed point material in the end cover 3 is subjected to phase change, and the calibration module of the thermometer drives the temperature measuring circuit to acquire the temperature data of the temperature measuring end 4 in real time.
Because the temperature plateau value of the adopted fixed point material is in the range close to the temperature of the human body, the fixed point material is heated and melted in the heating process, the calibration module collects the temperature change curve, and the temperature measuring circuit of the thermometer records the melting process of the fixed point to obtain the melting curve.
A calibration module in the thermometer obtains a slope section with the minimum change as a phase change temperature plateau by calculating the slope of a melting curve, the phase change temperature value of a fixed point is calibrated and known before leaving a factory, the difference between the display value of the thermometer and the temperature plateau value is obtained at the moment, and calibration is realized by correcting the calibration module.
The calibrated thermometer can be used for measuring body temperature, and accurate measurement of the temperature of a human body can be realized by pressing a temperature measuring button.
The end cover 3 can be heated by a convenient hand covering method, namely the end cover is covered by hands, the temperature of a human body is transmitted to a fixed point material of the end cover, the phase change of the material is realized, and the temperature is calibrated; the method of hot water heating can also be adopted, water with a certain temperature is added into the container, the temperature of the water is transferred to the fixed point material of the end cover, the phase change of the material is realized, and the temperature is calibrated; as a further alternative, a heating film may be disposed on the end cap, and the end cap may be heated by an external power supply or a battery, and the temperature is transferred to the material at the fixing point of the end cap to achieve phase change of the material. Further preferably, a heating assembly is provided on the end cap.
Example two:
as shown in fig. 2, it is preferable that the self-calibrating thermometer 1 is configured to measure temperature in a contact manner, the self-calibrating thermometer includes a thermometer body and an end cover, the self-calibrating thermometer includes a temperature measuring end 4, the temperature measuring end is configured to measure temperature in a contact manner, an accommodating space for accommodating the temperature measuring end is provided in the end cover 3, and the temperature measuring end of the self-calibrating thermometer is located in the accommodating space in a non-temperature measuring state. The thermometer comprises a thermometer body, and is characterized in that the thermometer body is internally provided with a temperature display module, a calibration circuit and a temperature measurement circuit, and a display screen, a temperature measurement button and a calibration button are correspondingly formed on a shell of the thermometer body.
The end cap 3 comprises a housing, preferably a graphite crucible protective housing, having an interior space in which is disposed a metallic or non-metallic anchor point material 10, preferably the anchor point material 10 has a recurrence point temperature between 30-45 degrees celsius, preferably the metallic or non-metallic material may be: rb (triple point 39.26 deg.C), pyruvic acid (triple point 36.3 deg.C), n-iodoalkane (triple point 36.48 deg.C), inorganic hydrated salt (melting point 35-40 deg.C), and paraffin substance (36-40 deg.C). Any one of the above materials is selected as a fixed point material, the recurring temperature of the fixed point material is close to the body temperature, the fixed point material 10 surrounds the inner shell, the fixed point material 10 is filled between the outer shell and the inner shell, the inner shell 7 is formed with a calibration space, the calibration space can be a containing space of a temperature measuring end, the temperature measuring end 4 of the self-calibration thermometer 1 can be inserted into the calibration space of the inner shell, the temperature measuring end 4 is in contact with the inner shell to realize the measurement of the temperature of the fixed point material, the fixed point material 10 in the end cover 3 has a specific thermodynamic temperature value, and the following steps are adopted in the using process:
before actually measuring temperature, when the thermometer is to be calibrated, inserting a temperature measuring end 4 of the thermometer into a calibration space, contacting the temperature measuring end 4 with an inner shell, and starting a calibration module by pressing a calibration button on a thermometer body 2;
and then the end cover 3 is heated, so that the fixed point material in the end cover 3 is subjected to phase change, and the calibration module of the thermometer drives the temperature measuring circuit to acquire the temperature data of the temperature measuring end 4 in real time.
Because the temperature plateau value of the adopted fixed point material is in the range close to the temperature of the human body, the fixed point material is heated and melted in the heating process, the calibration module collects the temperature change curve, and the temperature measuring circuit of the thermometer records the melting process of the fixed point to obtain the melting curve.
A calibration module in the thermometer obtains a slope section with the minimum change as a phase change temperature plateau by calculating the slope of a melting curve, the phase change temperature value of a fixed point is calibrated and known before leaving a factory, the difference between the display value of the thermometer and the temperature plateau value is obtained at the moment, and calibration is realized by correcting the calibration module.
The calibrated thermometer can be used for measuring body temperature, and accurate measurement of the temperature of a human body can be realized by pressing a temperature measuring button.
The end cover 3 can be heated by a convenient hand covering method, namely the end cover is covered by hands, the temperature of a human body is transmitted to a fixed point material of the end cover, the phase change of the material is realized, and the temperature is calibrated; the method of hot water heating can also be adopted, water with a certain temperature is added into the container, the temperature of the water is transferred to the fixed point material of the end cover, the phase change of the material is realized, and the temperature is calibrated; as a further alternative, a heating film may be disposed on the end cap, and the end cap may be heated by an external power supply or a battery, and the temperature is transferred to the material at the fixing point of the end cap to achieve phase change of the material. Further preferably, a heating assembly is provided on the end cap.
Therefore, the thermometer, such as a contact type thermometer or a non-contact type thermometer, can finish the calibration of the thermometer by comparing the result of the temperature value of the fixed point obtained by measurement with the temperature value of the fixed point stored in the calibration module. Thus, a thermometer can be used to perform temperature measurement with high accuracy.
The fixed point of the invention melts the metal or nonmetal substances in the fixed point by using heating methods such as a convenient hand covering method, a hydrothermal method and the like to finish the reproduction of the miniature fixed point, and compared with the traditional fixed point calibration method, the fixed point calibration method has the advantages of simple structure, practicality, rapidness, convenience and small volume.
It is to be understood that while the present invention has been described in conjunction with the preferred embodiments thereof, it is not intended to limit the invention to those embodiments. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (6)
1. A self-calibrating thermometer, comprising: clinical thermometer body and end cover, the clinical thermometer body has the temperature measurement end have the accommodation space that is used for this temperature measurement end of holding in the end cover, its characterized in that: the end cover comprises an outer shell, an inner shell and a fixing point material positioned between the outer shell and the inner shell, wherein the reproduction point temperature of the fixing point material is between 30 and 45 ℃; the inner shell is provided with a calibration space, the calibration space is provided with an opening, and the temperature measuring end is calibrated at the position of the opening or is calibrated in the calibration space; a heat insulation layer is arranged around the opening, and the heat insulation layer is made of glass fiber; the shell of the thermometer body comprises a display screen, a temperature measuring button and a calibration button; the end cover is covered by hands, and the temperature of a human body is transmitted to a fixed point material of the end cover to realize the phase change of the material; or the temperature of the water is transferred to the fixed point material of the end cover by adopting a hot water heating method, so that the phase change of the material is realized; the material of the fixed point is heated to melt, a calibration module in the thermometer body collects a temperature change curve, and a temperature measuring circuit of the thermometer records the melting process of the fixed point to obtain a melting curve; the calibration module in the thermometer obtains the slope section with the minimum change as a phase change temperature plateau by calculating the slope of the melting curve, obtains the difference between the display value of the thermometer and the temperature plateau value, and realizes calibration by correcting the calibration module.
2. The self-calibrating thermometer of claim 1 wherein: the shell is a graphite crucible protective shell.
3. The self-calibrating thermometer of claim 1 wherein: the fixing point material is a metal or nonmetal material.
4. The self-calibrating thermometer of claim 1 wherein: the fixing point material is any one of Rb, pyruvic acid, n-iodoalkane, inorganic hydrated salt or paraffin substance.
5. The self-calibrating thermometer of claim 2 wherein: the calibration space is a blackbody cavity.
6. The self-calibrating thermometer of claim 1 wherein: a heating component is arranged on the end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910058214.7A CN109632143B (en) | 2019-01-22 | 2019-01-22 | Self-calibration thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910058214.7A CN109632143B (en) | 2019-01-22 | 2019-01-22 | Self-calibration thermometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109632143A CN109632143A (en) | 2019-04-16 |
| CN109632143B true CN109632143B (en) | 2020-07-21 |
Family
ID=66063054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910058214.7A Active CN109632143B (en) | 2019-01-22 | 2019-01-22 | Self-calibration thermometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109632143B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974896B (en) * | 2019-03-27 | 2020-07-28 | 德州尧鼎光电科技有限公司 | Water triple point miniature calibration source chip |
| CN110887584B (en) * | 2019-11-11 | 2022-05-10 | 德州尧鼎光电科技有限公司 | Miniature water triple-point bottle and manufacturing method thereof |
| CN113884221A (en) * | 2021-09-29 | 2022-01-04 | 棒糖科技(杭州)股份有限公司 | Self-temperature-calibration thermometer component and self-temperature-calibration method |
| CN114659674B (en) * | 2022-03-16 | 2024-07-30 | 歌尔股份有限公司 | Temperature measurement function calibration method, system, device, charging base and medium |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3499310A (en) * | 1968-05-27 | 1970-03-10 | Alcor Aviat | Self-calibrating temperature sensing probe and probe - indicator combination |
| JP2987459B1 (en) * | 1998-12-11 | 1999-12-06 | 工業技術院長 | Temperature fixed point crucible, temperature fixed point device and thermometer calibration method |
| CN201488830U (en) * | 2009-07-23 | 2010-05-26 | 台湾亿力速股份有限公司 | Electronic thermometer |
| CN105942988B (en) * | 2016-05-17 | 2019-03-05 | 杭州欧汇科技有限公司 | Electronic thermometer and calibration method based on it |
| CN207528369U (en) * | 2017-08-02 | 2018-06-22 | 维灵（杭州）信息技术有限公司 | A kind of electronic thermometer calibrating installation |
| CN108827498A (en) * | 2018-07-02 | 2018-11-16 | 江苏省疾病预防控制中心 | A kind of mercury clinical thermometer mark slot |
-
2019
- 2019-01-22 CN CN201910058214.7A patent/CN109632143B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109632143A (en) | 2019-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109632143B (en) | Self-calibration thermometer | |
| US7479116B2 (en) | Temperature measurement device | |
| US7981046B2 (en) | Temperature measurement device | |
| JP3333353B2 (en) | Temperature measuring device | |
| US4487208A (en) | Fast response thermoresistive temperature sensing probe | |
| EP1857795B1 (en) | Tympanic thermometer | |
| US8657487B2 (en) | Mini-cell, on-orbit, temperature re-calibration apparatus and method | |
| EP2295943A1 (en) | Radiation thermometer calibration | |
| EP0411121A4 (en) | Optical thermometer | |
| EP0562039A4 (en) | ||
| JPH04109928A (en) | Thermometer | |
| US6939035B2 (en) | System for calibrating thermometers | |
| CN209459772U (en) | Accurate foldable digital thermometer of temperature measurement | |
| Wang et al. | A digital thermometer with fast response and high precision | |
| Hagart-Alexander | Temperature measurement | |
| CN105910731A (en) | Micro fixing point device based on eutectic point | |
| CN212567742U (en) | Body temperature sensor calibrating device | |
| US20120128031A1 (en) | Electronic Clinical Thermometer | |
| CN208818350U (en) | A kind of infrared radiation thermometer | |
| CN216283957U (en) | Ear thermometer and probe of temperature measuring device | |
| WO2015022898A1 (en) | Electronic thermometer | |
| McEvoy et al. | New blackbody standard for the evaluation and calibration of tympanic ear thermometers at the NPL, United Kingdom | |
| JPH0241698B2 (en) | ||
| JPS6293639A (en) | Method and apparatus for rapidly measuring heat conductivity | |
| Grodzinsky et al. | Technical Accuracy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |