CN102327113A - Temperature measurement head structure and thermometer - Google Patents
Temperature measurement head structure and thermometer Download PDFInfo
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- CN102327113A CN102327113A CN201110301832A CN201110301832A CN102327113A CN 102327113 A CN102327113 A CN 102327113A CN 201110301832 A CN201110301832 A CN 201110301832A CN 201110301832 A CN201110301832 A CN 201110301832A CN 102327113 A CN102327113 A CN 102327113A
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- heat carrier
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Abstract
The invention discloses a temperature measurement head structure and a thermometer. The temperature measurement head structure comprises a casing, a tubular heat conductor, a cap-shaped heat conductor, and an infrared sensor, wherein the front end of the casing and the front end of the cap-shaped heat conductor are provided with a detection hole respectively; the tubular heat conductor is located in the casing; the bottom surface of the infrared sensor is tightly clung to the end part of the tubular heat conductor and is located at the detection hole on the front end of the casing; the cap-shaped heat conductor surrounds the infrared sensor and is sheathed on the outer wall of the end part of the tubular heat conductor in a tight fit manner; the front detection hole of the cap-shaped heat conductor is located behind the detection hole on the front end of the casing; and the temperature measurement head structure includes an air gap for completely isolating the outer wall surface, the inner wall surface having the top surface corresponding to the cap-shaped heat conductor, and the inner bottom surface of the infrared sensor. The thermometer comprises a thermometer body and a temperature measurement head using the above temperature measurement head structure. The temperature measurement head structure is simple, can greatly improve the temperature measurement accuracy and reliability of the thermometer, and can be used for thermometer and other temperature measurement instruments.
Description
Technical field
The present invention relates to a kind of temperature measuring head structure of utilizing the infrared rays survey temperature, also relate to the clinical thermometer that uses this temperature measuring head structure.
Background technology
The infrared human body thermometry has obtained widespread, and it receives the radiating infrared ray of human body through infrared sensor, through obtaining the body temperature temperature after the temperature measuring circuit resume module.The infrared thermometer and the traditional mercurial thermometer that utilize the infrared human body thermometry to make compare, and have convenient measurement, quick, and do not contain Toxic matter hydrargyrum, can not pollute plurality of advantages to environment.
The operation principle of infrared thermometer is: the temperature difference that detects thermocouple self upper and lower surfaces through the thermocouple of sensor internal; When human body infrared when inciding the thermocouple upper surface; The upper surface temperature can receive infrared heating and raise; The thermocouple upper and lower surfaces produces the temperature difference, and thermocouple output thermoelectric voltage signal supplies infrared thermometer measuring circuit resume module to obtain human body temperature.
Because infrared thermometer can receive the interference of human body temperature in use, the temperature drift of existing infrared thermometer ubiquity is excessive, cause the inaccurate defective of thermometric.For example; When pick off being inserted in the auditory meatus take temperature; The human heat can be directly delivered to the window (upper surface) and the sidewall of pick off through the temperature measuring head structure, and then is delivered on the thermocouple of infrared thermometer sensor internal, makes thermocouple produce the temperature difference; And the generation error voltage signal, cause the measurement of bldy temperature error.Through people's ear testing human body temperature, because of the temperature difference of environment and people's ear is bigger, this measurement error will be very big under low temperature environment, surpasses 1 degree centigrade sometimes, seriously reduced the reliability and the accuracy of infrared thermometer.
Summary of the invention
One of technical problem that the present invention will solve is, a kind of temperature measuring head structure is provided, and significantly reduces the influence of measurand body temperature to measurement result accuracy.
Two of the technical problem that the present invention will solve is, a kind of clinical thermometer is provided, and adopts above-mentioned temperature measuring head structure, significantly improves reliable measurement property and accuracy in infrared thermometer.
The present invention solves the technical scheme that one of its technical problem adopts: construct a kind of temperature measuring head structure, comprise shell, tubular guidewire hot body, medicated cap shape heat carrier and infrared sensor, this shell front end and this medicated cap shape heat carrier front end are provided with respectively and detect the hole; This tubular guidewire hot body is positioned at this shell; The place, front-end detection hole of this shell is close to and is positioned in the bottom surface of this infrared sensor and this tubular guidewire hot body end; This medicated cap shape heat carrier surrounds this infrared sensor tight fit and is sleeved on this tubular guidewire hot body end outer wall, and the front-end detection hole of this medicated cap shape heat carrier is positioned at after the front-end detection hole of this shell; It is characterized in that,
Comprise air-gap, this air-gap is between the outer side wall surface of said infrared sensor and end face interior side-wall surface corresponding with said medicated cap shape heat carrier and inside bottom surface and outer side wall surface and the end face and corresponding interior side-wall surface and the inside bottom surface of said medicated cap shape heat carrier of the said infrared sensor of complete isolation.
In temperature measuring head structure of the present invention; Said infrared sensor comprises the circular fold that is positioned at its bottom surface one end; The end that said tubular guidewire hot body cooperates with this infrared sensor comprises the cavity that cooperates with said circular fold location, and said medicated cap shape heat carrier inboard comprises and cooperates the step end face that said infrared sensor is pressed on said tubular guidewire hot body end with the upper surface of said circular fold; Said cavity is located outer side wall surface and the end face and corresponding interior side-wall surface and the inside bottom surface of said medicated cap shape heat carrier that guarantees the said infrared sensor of the complete isolation of said air-gap with the cooperation location of said circular fold with the tight fit suit of said medicated cap shape heat carrier and said tubular guidewire hot body.
In temperature measuring head structure of the present invention; Said infrared sensor comprises the circular fold that is positioned at its bottom surface one end; The outside diameter of the end that the outside diameter of this circular fold and said tubular guidewire hot body and this infrared sensor cooperate equates, said medicated cap shape heat carrier inboard comprises and cooperates the step end face that said infrared sensor is pressed on said tubular guidewire hot body end with the upper surface of said circular fold; Outer side wall surface and the end face and corresponding interior side-wall surface and the inside bottom surface of said medicated cap shape heat carrier that guarantees the said infrared sensor of the complete isolation of said air-gap located with the cooperation of the medial wall of said medicated cap shape heat carrier in the lateral wall of said circular fold.
In temperature measuring head structure of the present invention, said circular fold comprises chamfering or the fillet that is positioned at its upper surface one side.
In temperature measuring head structure of the present invention; Said infrared sensor comprises the flanging that is positioned at its bottom surface one end; The end that said tubular guidewire hot body cooperates with this infrared sensor comprises the cavity that cooperates with said flanging location, and said medicated cap shape heat carrier inboard comprises with said hemmed upper surface and cooperates the step end face that said infrared sensor is pressed on said tubular guidewire hot body end; Said cavity and outer side wall surface and the end face and said medicated cap shape heat carrier corresponding interior side-wall surface and inside bottom surface of said hemmed cooperation location with the said infrared sensor of the tight fit suit location assurance complete isolation of said air-gap of said medicated cap shape heat carrier and said tubular guidewire hot body.
The present invention solves the technical scheme that two of its technical problem adopted: construct a kind of clinical thermometer, comprise the clinical thermometer body and be installed in the temperature measuring head on this clinical thermometer body; This temperature measuring head comprises shell, tubular guidewire hot body, medicated cap shape heat carrier and infrared sensor, and this shell front end and this medicated cap shape heat carrier front end are provided with respectively and detect the hole; This tubular guidewire hot body is positioned at this shell; The place, front-end detection hole of this shell is close to and is positioned in the bottom surface of this infrared sensor and this tubular guidewire hot body end; This medicated cap shape heat carrier surrounds this infrared sensor tight fit and is sleeved on this tubular guidewire hot body end outer wall, and the front-end detection hole of this medicated cap shape heat carrier is positioned at after the front-end detection hole of this shell; It is characterized in that,
Comprise air-gap, this air-gap is between the outer side wall surface of said infrared sensor and end face interior side-wall surface corresponding with said medicated cap shape heat carrier and inside bottom surface and outer side wall surface and the end face and corresponding interior side-wall surface and the inside bottom surface of said medicated cap shape heat carrier of the said infrared sensor of complete isolation.
In clinical thermometer of the present invention; Said infrared sensor comprises the circular fold that is positioned at its bottom surface one end; The end that said tubular guidewire hot body cooperates with this infrared sensor comprises the cavity that cooperates with said circular fold location, and said medicated cap shape heat carrier inboard comprises and cooperates the step end face that said infrared sensor is pressed on said tubular guidewire hot body end with the upper surface of said circular fold; Said cavity is located outer side wall surface and the end face and corresponding interior side-wall surface and the inside bottom surface of said medicated cap shape heat carrier that guarantees the said infrared sensor of the complete isolation of said air-gap with the cooperation location of said circular fold with the tight fit suit of said medicated cap shape heat carrier and said tubular guidewire hot body.
In clinical thermometer of the present invention; Said infrared sensor comprises the circular fold that is positioned at its bottom surface one end; The outside diameter of the end that the outside diameter of this circular fold and said tubular guidewire hot body and this infrared sensor cooperate equates, said medicated cap shape heat carrier inboard comprises and cooperates the step end face that said infrared sensor is pressed on said tubular guidewire hot body end with the upper surface of said circular fold; Outer side wall surface and the end face and corresponding interior side-wall surface and the inside bottom surface of said medicated cap shape heat carrier that guarantees the said infrared sensor of the complete isolation of said air-gap located with the cooperation of the medial wall of said medicated cap shape heat carrier in the lateral wall of said circular fold.
In clinical thermometer of the present invention, said circular fold comprises chamfering or the fillet that is positioned at its upper surface one side.
In clinical thermometer of the present invention; Said infrared sensor comprises the flanging that is positioned at its bottom surface one end; The end that said tubular guidewire hot body cooperates with this infrared sensor comprises the cavity that cooperates with said flanging location, and said medicated cap shape heat carrier inboard comprises with said hemmed upper surface and cooperates the step end face that said infrared sensor is pressed on said tubular guidewire hot body end; Said cavity and outer side wall surface and the end face and said medicated cap shape heat carrier corresponding interior side-wall surface and inside bottom surface of said hemmed cooperation location with the said infrared sensor of the tight fit suit location assurance complete isolation of said air-gap of said medicated cap shape heat carrier and said tubular guidewire hot body.
The temperature measuring head structure and the clinical thermometer of embodiment of the present invention compare with prior art, and its beneficial effect is:
1. through between medicated cap shape heat carrier and infrared sensor, air-gap being set, utilize the good heat-insulating property of air, prevent that the measured body heat is delivered to infrared sensor through shell and medicated cap shape heat carrier
On, thereby prevented the thermometric error that causes because of the measured body heat effectively, improve the temperature survey accuracy and the reliability of clinical thermometer greatly;
2. simple in structure, exchange the significantly raising of certainty of measurement for increase manufacturing cost seldom;
3. this temperature measuring head structure not only can be used on the clinical thermometer, can also be used on other temperature measuring sets that utilize the infrared rays survey measurand temperature that measurand sends.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the cutaway view of a kind of embodiment of temperature measuring head structure of the present invention.
Fig. 2 is the I portion enlarged drawing of Fig. 1.
The specific embodiment
Temperature measuring head structure embodiment one
Like Fig. 1, shown in Figure 2; Temperature measuring head structure 10 of the present invention comprises shell 14 materials such as (adopt usually process) plastic cement, aluminum pipe 13 (also can adopt other tubular guidewire hot body such as copper pipe etc.), copper medicated cap 12 (also can adopt other medicated cap shape heat carriers such as aluminum medicated cap etc.) and infrared sensor 11, and the front end of the front end of shell 14 and copper medicated cap 12 is provided with respectively and detects the hole.Aluminum pipe 13 location and installation are in shell 14; The place, front-end detection hole of shell 14 is close to and is positioned in the end of the bottom surface of infrared sensor 11 and aluminum pipe 13; It (can be interference fits that copper medicated cap 12 surrounds infrared sensor 11 tight fits; Also can be interference fit, down together) be sleeved on the end outer wall of aluminum pipe 13, the detection hole of copper medicated cap 12 front ends is positioned at after the front-end detection hole of shell 14.Between corresponding interior side-wall surface 122 of the outer side wall surface 112 of infrared sensor 11 and end face 113 and copper medicated cap 12 and inside bottom surface 123, air-gap 20 is set; Make between interior side-wall surface that outer side wall surface and end face and the copper medicated cap 12 of infrared sensor 11 is corresponding and the inside bottom surface by these air-gap 20 complete isolation; Be delivered on the infrared sensor 11 through copper medicated cap 12 from the heat of shell 14 preventing, cause thermometric error.
In the present embodiment; Be to adopt following structure to guarantee by air-gap 20 complete isolation between interior side-wall surface that the outer side wall surface of infrared sensor 11 and end face and copper medicated cap 12 are corresponding and the inside bottom surface: as shown in Figure 2; Be positioned at its bottom surface one end at infrared sensor 11 circular fold 111 is set; The cavity 131 that cooperates with this circular fold 111 location is set in the end that aluminum pipe 13 cooperates with infrared sensor 11; Cooperates the step end face 121 that infrared sensor 11 is pressed on aluminum pipe 13 ends inboard setting of copper medicated cap 12 with the upper surface 114 of this circular fold 111, cavity 131 and the cooperation of circular fold 111 are located with copper medicated cap 12 and are located corresponding medial wall table 122 of the outer side wall surface 112 that guarantees air-gap 20 complete isolation infrared sensors 11 and end face 113 and copper medicated cap 12 and inside bottom surface 123 with the tight fit suit of aluminum pipe 13.
Temperature measuring head structure embodiment two
The temperature measuring head structure of present embodiment and the temperature measuring head structure of embodiment one are basic identical; Difference only is; Be to adopt following structure to guarantee by air-gap 20 complete isolation between interior side-wall surface that the outer side wall surface of infrared sensor 11 and end face and copper medicated cap 12 are corresponding and the inside bottom surface: infrared sensor 11 comprises the circular fold that is positioned at its bottom surface one end; The outside diameter of this circular fold equates with the outside diameter of aluminum pipe 13 with the end of these infrared sensor 11 cooperations; The inboard of copper medicated cap 12 comprises with the upper surface of this circular fold and cooperating infrared sensor pressure 11 tight step end faces in aluminum pipe 13 ends; The medial wall of the lateral wall of this circular fold and copper medicated cap 12 cooperate outer side wall surface 112 and end face 113 that location (can be movingly, also can be tight fit) guarantees air-gap 20 complete isolation infrared sensors 11 and copper medicated cap 12 corresponding interior side-wall surface 122 and inside bottom surface 123.
For the ease of copper medicated cap 12 assembling, be positioned at its upper surface one side at the circular fold of infrared sensor 11 chamfering or fillet (not shown) are set with infrared sensor 11.
Temperature measuring head structure embodiment three
The temperature measuring head structure of present embodiment and the temperature measuring head structure of embodiment one are basic identical; Difference only is; Be to adopt following structure to guarantee by air-gap 20 complete isolation between interior side-wall surface that the outer side wall surface of infrared sensor 11 and end face and copper medicated cap 12 are corresponding and the inside bottom surface: infrared sensor 11 comprises that the flanging that is positioned at its bottom surface one end (can be a symmetry flanging spaced apart; It also can be asymmetric flanging spaced apart; Can also be one section flanging); The end that aluminum pipe 13 cooperates with this infrared sensor 11 comprises the cavity that cooperates with this flanging location; The inboard of copper medicated cap 12 comprises with this hemmed upper surface and cooperates the step end face that infrared sensor 11 is pressed on aluminum pipe 13 ends, interior side-wall surface 122 and inside bottom surface 123 that outer side wall surface 112 and the end face 113 that this cavity and this hemmed cooperation location guarantee air-gap 20 complete isolation infrared sensors 11 with the tight fit suit location of aluminum pipe 13 with copper medicated cap 12 and copper medicated cap 12 are corresponding.
Clinical thermometer of the present invention comprises the clinical thermometer body and is installed in the temperature measuring head on this clinical thermometer body.The clinical thermometer body comprises housing, temperature measuring circuit module, battery, switch, display screen etc., and is open by prior art, repeats no more at this.Temperature measuring head adopts above-mentioned temperature measuring head structure of the present invention, and temperature measuring head structure and variation as above-mentioned thereof are also repeated no more at this.
Claims (10)
1. a temperature measuring head structure comprises shell, tubular guidewire hot body, medicated cap shape heat carrier and infrared sensor, and this shell front end and this medicated cap shape heat carrier front end are provided with respectively and detect the hole; This tubular guidewire hot body is positioned at this shell; The place, front-end detection hole of this shell is close to and is positioned in the bottom surface of this infrared sensor and this tubular guidewire hot body end; This medicated cap shape heat carrier surrounds this infrared sensor tight fit and is sleeved on this tubular guidewire hot body end outer wall, and the front-end detection hole of this medicated cap shape heat carrier is positioned at after the front-end detection hole of this shell; It is characterized in that,
Comprise air-gap, this air-gap is between the outer side wall surface of said infrared sensor and end face interior side-wall surface corresponding with said medicated cap shape heat carrier and inside bottom surface and outer side wall surface and the end face and corresponding interior side-wall surface and the inside bottom surface of said medicated cap shape heat carrier of the said infrared sensor of complete isolation.
2. temperature measuring head structure as claimed in claim 1; It is characterized in that; Said infrared sensor comprises the circular fold that is positioned at its bottom surface one end; The end that said tubular guidewire hot body cooperates with this infrared sensor comprises the cavity that cooperates with said circular fold location, and said medicated cap shape heat carrier inboard comprises and cooperates the step end face that said infrared sensor is pressed on said tubular guidewire hot body end with the upper surface of said circular fold; Said cavity is located outer side wall surface and the end face and corresponding interior side-wall surface and the inside bottom surface of said medicated cap shape heat carrier that guarantees the said infrared sensor of the complete isolation of said air-gap with the cooperation location of said circular fold with the tight fit suit of said medicated cap shape heat carrier and said tubular guidewire hot body.
3. temperature measuring head structure as claimed in claim 1; It is characterized in that; Said infrared sensor comprises the circular fold that is positioned at its bottom surface one end; The outside diameter of the end that the outside diameter of this circular fold and said tubular guidewire hot body and this infrared sensor cooperate equates, said medicated cap shape heat carrier inboard comprises and cooperates the step end face that said infrared sensor is pressed on said tubular guidewire hot body end with the upper surface of said circular fold; Outer side wall surface and the end face and corresponding interior side-wall surface and the inside bottom surface of said medicated cap shape heat carrier that guarantees the said infrared sensor of the complete isolation of said air-gap located with the cooperation of the medial wall of said medicated cap shape heat carrier in the lateral wall of said circular fold.
4. temperature measuring head structure as claimed in claim 3 is characterized in that, said circular fold comprises chamfering or the fillet that is positioned at its upper surface one side.
5. temperature measuring head structure as claimed in claim 1; It is characterized in that; Said infrared sensor comprises the flanging that is positioned at its bottom surface one end; The end that said tubular guidewire hot body cooperates with this infrared sensor comprises the cavity that cooperates with said flanging location, and said medicated cap shape heat carrier inboard comprises with said hemmed upper surface and cooperates the step end face that said infrared sensor is pressed on said tubular guidewire hot body end; Said cavity and outer side wall surface and the end face and said medicated cap shape heat carrier corresponding interior side-wall surface and inside bottom surface of said hemmed cooperation location with the said infrared sensor of the tight fit suit location assurance complete isolation of said air-gap of said medicated cap shape heat carrier and said tubular guidewire hot body.
6. a clinical thermometer comprises the clinical thermometer body and is installed in the temperature measuring head on this clinical thermometer body; This temperature measuring head comprises shell, tubular guidewire hot body, medicated cap shape heat carrier and infrared sensor, and this shell front end and this medicated cap shape heat carrier front end are provided with respectively and detect the hole; This tubular guidewire hot body is positioned at this shell; The place, front-end detection hole of this shell is close to and is positioned in the bottom surface of this infrared sensor and this tubular guidewire hot body end; This medicated cap shape heat carrier surrounds this infrared sensor tight fit and is sleeved on this tubular guidewire hot body end outer wall, and the front-end detection hole of this medicated cap shape heat carrier is positioned at after the front-end detection hole of this shell; It is characterized in that,
Comprise air-gap, this air-gap is between the outer side wall surface of said infrared sensor and end face interior side-wall surface corresponding with said medicated cap shape heat carrier and inside bottom surface and outer side wall surface and the end face and corresponding interior side-wall surface and the inside bottom surface of said medicated cap shape heat carrier of the said infrared sensor of complete isolation.
7. clinical thermometer as claimed in claim 6; It is characterized in that; Said infrared sensor comprises the circular fold that is positioned at its bottom surface one end; The end that said tubular guidewire hot body cooperates with this infrared sensor comprises the cavity that cooperates with said circular fold location, and said medicated cap shape heat carrier inboard comprises and cooperates the step end face that said infrared sensor is pressed on said tubular guidewire hot body end with the upper surface of said circular fold; Said cavity is located outer side wall surface and the end face and corresponding interior side-wall surface and the inside bottom surface of said medicated cap shape heat carrier that guarantees the said infrared sensor of the complete isolation of said air-gap with the cooperation location of said circular fold with the tight fit suit of said medicated cap shape heat carrier and said tubular guidewire hot body.
8. clinical thermometer as claimed in claim 6; It is characterized in that; Said infrared sensor comprises the circular fold that is positioned at its bottom surface one end; The outside diameter of the end that the outside diameter of this circular fold and said tubular guidewire hot body and this infrared sensor cooperate equates, said medicated cap shape heat carrier inboard comprises and cooperates the step end face that said infrared sensor is pressed on said tubular guidewire hot body end with the upper surface of said circular fold; Outer side wall surface and the end face and corresponding interior side-wall surface and the inside bottom surface of said medicated cap shape heat carrier that guarantees the said infrared sensor of the complete isolation of said air-gap located with the cooperation of the medial wall of said medicated cap shape heat carrier in the lateral wall of said circular fold.
9. clinical thermometer as claimed in claim 8 is characterized in that, said circular fold comprises chamfering or the fillet that is positioned at its upper surface one side.
10. clinical thermometer as claimed in claim 6; It is characterized in that; Said infrared sensor comprises the flanging that is positioned at its bottom surface one end; The end that said tubular guidewire hot body cooperates with this infrared sensor comprises the cavity that cooperates with said flanging location, and said medicated cap shape heat carrier inboard comprises with said hemmed upper surface and cooperates the step end face that said infrared sensor is pressed on said tubular guidewire hot body end; Said cavity and outer side wall surface and the end face and said medicated cap shape heat carrier corresponding interior side-wall surface and inside bottom surface of said hemmed cooperation location with the said infrared sensor of the tight fit suit location assurance complete isolation of said air-gap of said medicated cap shape heat carrier and said tubular guidewire hot body.
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| CN201110301832A CN102327113A (en) | 2011-09-28 | 2011-09-28 | Temperature measurement head structure and thermometer |
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| CN201110301832A CN102327113A (en) | 2011-09-28 | 2011-09-28 | Temperature measurement head structure and thermometer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107224274A (en) * | 2016-03-23 | 2017-10-03 | 原相科技股份有限公司 | Wearable device |
| US10670465B2 (en) | 2015-03-20 | 2020-06-02 | Pixart Imaging Inc. | Wearable infrared temperature sensing device |
| US10732049B2 (en) | 2015-03-20 | 2020-08-04 | Pixart Imaging Inc. | Thermopile module |
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| CN201572085U (en) * | 2009-07-01 | 2010-09-08 | 曹亮 | Detector of infrared thermometer |
| CN202277330U (en) * | 2011-09-28 | 2012-06-20 | 深圳市东迪欣科技有限公司 | Temperature measuring head structure and thermometer |
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| US6749334B2 (en) * | 2002-08-09 | 2004-06-15 | Radiant Innovation Inc. | Ear thermometer probe structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US10670465B2 (en) | 2015-03-20 | 2020-06-02 | Pixart Imaging Inc. | Wearable infrared temperature sensing device |
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Application publication date: 20120125 |