CN215414094U - Protection heating thermistor probe - Google Patents
Protection heating thermistor probe Download PDFInfo
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- CN215414094U CN215414094U CN202122205052.0U CN202122205052U CN215414094U CN 215414094 U CN215414094 U CN 215414094U CN 202122205052 U CN202122205052 U CN 202122205052U CN 215414094 U CN215414094 U CN 215414094U
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- straight pipe
- wall
- thermistor probe
- temperature
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- 239000000523 sample Substances 0.000 title claims abstract description 35
- 238000010438 heat treatment Methods 0.000 title claims abstract description 15
- 239000000428 dust Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 7
- 230000006978 adaptation Effects 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000004812 Fluorinated ethylene propylene Substances 0.000 claims 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims 1
- 229920009441 perflouroethylene propylene Polymers 0.000 claims 1
- 238000009529 body temperature measurement Methods 0.000 abstract description 16
- 230000001681 protective effect Effects 0.000 abstract description 15
- 238000005259 measurement Methods 0.000 abstract description 13
- 230000006378 damage Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- BJEOXOPPQIRFGG-UHFFFAOYSA-N 1,2-difluoroethane;prop-1-ene Chemical group CC=C.FCCF BJEOXOPPQIRFGG-UHFFFAOYSA-N 0.000 description 2
- QJGLDKKUHNLMCZ-UHFFFAOYSA-N 1,2-difluoropropane;ethene Chemical compound C=C.CC(F)CF QJGLDKKUHNLMCZ-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000000451 tissue damage Effects 0.000 description 2
- 231100000827 tissue damage Toxicity 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008081 blood perfusion Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 208000017520 skin disease Diseases 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 230000028016 temperature homeostasis Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model relates to the technical field of temperature measuring probes, and discloses a protective heating thermistor probe, which comprises a straight pipe, wherein a dustproof cover is movably connected with the inner wall of the top of the straight pipe, a temperature sensor is fixedly arranged on the inner wall of the bottom of the straight pipe, a protective heater is fixedly arranged on the inner wall of the bottom of the straight pipe, the protective heating thermistor probe can reduce the temperature difference between the temperature sensor and a lead wire and improve the accuracy of a temperature measuring result by introducing the protective heater into the design of the temperature measuring probe, the protective heater thermistor probe is applied to the skin of a human body, noninvasive, accurate, rapid and local measurement of heat conductivity can be realized, the temperature measuring accuracy is further improved, the dustproof cover is clamped with the straight pipe by arranging the dustproof cover on the inner wall of the top of the straight pipe, the dustproof cover can protect the inner cavity of the straight pipe and prevent dust from scattering into the straight pipe to damage the thermistor and influence the temperature measuring result, and the temperature measurement error is reduced.
Description
Technical Field
The utility model relates to the technical field of temperature measuring probes, in particular to a protective heating thermistor probe.
Background
Heat transfer to the human skin is mainly a heat conduction process, which is combined with a complex physiological process, in fact, the surface temperature of the human skin is caused by local metabolism of an individual, subcutaneous blood perfusion, heat exchange of the body with the surrounding air, and any change in these parameters can cause changes in the surface temperature and thermophysical properties of the skin, and in addition, the thermophysical properties of the skin can change even in a specific layer due to the influence of various factors such as body position, temperature, moisture content, disease, thermal denaturation and age. The measurement of thermal properties of the skin, including surface temperature, thermophysical properties and other physiological parameters, makes it possible to detect changes in physical state related to skin structure and activity, skin disorders, cosmetic conditions, thermoregulation and other physiological aspects.
As society develops and progresses, many researchers have attempted to establish effective techniques for measuring the thermophysical properties of biological tissues. Self-heating thermistor methods are considered to be one of the suitable techniques for measuring the thermal conductivity of biological tissues because of their high speed and simple equipment. This method uses a thermistor as a temperature sensor and a point heat source, however, it is an invasive method, resulting in tissue damage due to the insertion of the probe. Therefore, many researchers conclude that despite the many advantages of clinical trials, they cannot be performed using real human tissue for ethical reasons, and in order not to cause tissue damage, they have developed a surface probe consisting of a platinum thermistor with an insulating material, which is placed on the tissue surface and heated to a fixed temperature, while measuring the power to maintain this high temperature, although these methods allow non-invasive measurement of the thermal conductivity of biological tissue, the insulating material covering the probe affects the skin surface temperature and the temperature distribution within the tissue, and the temperature change of the tissue during the measurement leads to experimental errors in the thermal conductivity. Thus, this method is still not practical for medical diagnosis. We therefore propose a protective heating thermistor probe to solve the above problems.
This kind of protection heating thermistor probe, through introduced the protection heater in the temperature probe design, can reduce the difference in temperature between temperature sensor and the lead wire, the accuracy of temperature measurement result has been improved, will protect the heater thermistor probe and be applied to human skin, can realize the woundless to the thermal conductivity, it is accurate, quick and local measurement, further improve the temperature measurement accuracy, and the shield of joint between straight tube top inner wall setting and straight tube, make the shield not only can play the effect of protecting the straight tube inner chamber, prevent that the dust from scattering to causing in the straight tube thermistor to damage and influence the temperature measurement result, and two fastener of shield top inner wall swing joint can also play the elastic support effect to two lead wires, prevent the mutual contact between two lead wires, thereby reduce the temperature measurement error.
SUMMERY OF THE UTILITY MODEL
In order to achieve the purpose of non-invasive, accurate, rapid and local measurement of the thermal conductivity, the utility model provides the following technical scheme: a protective heating thermistor probe comprises a straight pipe, wherein a dustproof cover is movably connected to the inner wall of the top of the straight pipe, a temperature sensor is fixedly mounted on the inner wall of the bottom of the straight pipe, a protective heater is fixedly mounted on the inner wall of the bottom of the straight pipe, lead wires are fixedly mounted on the left side and the right side of the top of the protective heater, sliding blocks are movably connected to the left side and the right side of the inner wall of the dustproof cover, connecting rods are fixedly mounted on the tops of the two sliding blocks, wire clamps are fixedly mounted on the outer walls of the two connecting rods, and a first spring is fixedly mounted on one side, opposite to the two sliding blocks;
the equal fixed mounting in the left and right sides of shield has the second spring, the right side fixed mounting of second spring has the fixture block, the right side swing joint of fixture block has spacing dish, the right side fixed mounting of spacing dish has the connecting block.
The improved temperature measurement probe is characterized in that the straight pipe is made of ethylene propylene fluoride, the length of the straight pipe is twenty millimeters, the temperature sensor and the protection heater are all composed of oval glass coating thermistors, the short diameters of the two thermistors are four-to-three zero millimeters, the ethylene propylene fluoride material is not ignited, flame diffusion can be prevented, the abrasion resistance is good, the influence of external environment temperature on heat conductivity measurement is effectively prevented, the two thermistors can be used as the temperature sensor and a point heat source, the protection heater can reduce heat loss of a lead, and the probe can be allowed to provide more accurate surface temperature measurement when the temperature of the probe is higher than the environment temperature.
Preferably, through holes are formed in the left side and the right side of the dustproof cover, the two lead wires penetrate through the two through holes respectively and extend to the outer wall of the straight pipe, the tops of the two lead wires are electrically connected with a digital multimeter and a direct current power supply respectively, the lead wires are electrically connected with the external digital multimeter and the direct current power supply, voltage and current can be measured simultaneously, a user can conveniently apply current as protection heating through control, the direct current power supply can be connected to a personal computer, measurement data are recorded, and the applied voltage and current of the protection heater are controlled through a national instrument.
As optimization, two the fastener is made by the elastic rubber material, the relative one side outer wall swing joint of back of the body one side of two fastener respectively with two lead wires for two fastener can carry out the centre gripping to two lead wires respectively, and the fastener of elastic rubber material is non-conductive, avoids producing the error to the testing result.
As optimization, the inner wall of the top of the dustproof cover is provided with a movable groove and a sliding groove, the movable groove is matched with the two connecting rods, the sliding groove is matched with the two sliding blocks, the bottoms of the two connecting rods penetrate through the movable groove and are fixedly connected with the tops of the two sliding blocks respectively, so that the two sliding blocks can obtain elastic displacement through the support of the first spring, elastic supporting force is further provided for the two leads, the two leads can be prevented from being contacted with each other to generate measuring errors, and the two leads can be prevented from being bent due to swinging.
As optimization, the mounting groove with two second spring looks adaptations is all seted up to the left and right sides inner wall of shield, and two fixture blocks are respectively through the left and right sides inner wall swing joint of two mounting grooves and shield for two fixture blocks can obtain elastic displacement through two second springs respectively, and make and can make two fixture blocks extend to in the mounting groove of the shield left and right sides after two second springs receive the extrusion.
As optimization, the inner walls of the left side and the right side of the straight pipe are provided with slots matched with the two clamping blocks, and the left side and the right side of the straight pipe are provided with limiting grooves matched with the two limiting discs. Relative one side of two connecting blocks runs through the left and right sides of straight tube respectively and with two spacing dish one side fixed connection that back on the back of the body mutually for when two fixture blocks received two second spring elastic support, can extend to in two slots of straight tube and then make the shield fixed, only need the user to press two connecting blocks respectively when needing to demolish the shield, make two connecting block relative movement, can extrude two fixture blocks and two second springs, make the shield lift off.
The utility model has the beneficial effects that:
1. this protection heating thermistor probe through having introduced the protection heater in the temperature probe design, can reduce the difference in temperature between temperature sensor and the lead wire, has improved the accuracy nature of temperature measurement result, will protect heater thermistor probe and be applied to human skin, can realize not having wound, accurate, quick and local measurement to the thermal conductivity, further improve the temperature measurement accuracy.
2. This protection heating thermistor probe, through the shield of joint between straight tube top inner wall setting and straight tube for the shield not only can play the effect to the protection of straight tube inner chamber, prevents that the dust from scattering to causing in the straight tube thermistor to damage and influence the temperature measurement result, and two fastener of shield top inner wall swing joint can also play the elastic support effect to two lead wires, prevents the mutual contact between two lead wires, arouses the temperature measurement error.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front cross-sectional view of the structure of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention;
FIG. 4 is an enlarged, cross-sectional, perspective view of the dust cap structure of the present invention;
FIG. 5 is an enlarged, longitudinal cross-sectional perspective view of the dust cap structure of the present invention;
FIG. 6 is an enlarged view of the structure at B in FIG. 5 according to the present invention.
In the figure: 1. a straight pipe; 2. a dust cover; 3. a temperature sensor; 4. protecting the heater; 5. a lead wire; 6. a slider; 7. a connecting rod; 8. wire clamps; 9. a first spring; 10. a second spring; 11. a clamping block; 12. a limiting disc; 13. and (4) connecting the blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2-3, a protection heating thermistor probe comprises a straight tube 1, a dust cover 2 is movably connected to the inner wall of the top of the straight tube 1, a temperature sensor 3 is fixedly installed on the inner wall of the bottom of the straight tube 1, a protection heater 4 is fixedly installed on the inner wall of the bottom of the straight tube 1, lead wires 5 are fixedly installed on the left side and the right side of the top of the protection heater 4, the straight tube 1 is made of ethylene fluoride propylene, the straight tube 1 is twenty millimeters in length, the temperature sensor 3 and the protection heater 4 are both formed by oval glass coating thermistors, the short diameters of the two thermistors are four or three millimeters at zero, the ethylene fluoride propylene material is not ignited, flame diffusion can be prevented, the abrasion resistance is excellent, the influence of external environment temperature on heat conductivity measurement can be effectively prevented, the two thermistors can be used as both the temperature sensor 3 and a point heat source, the protective heater 4 can not only reduce the heat loss of the lead 5, but also allow the probe to provide more accurate surface temperature measurement when the temperature is higher than the ambient temperature, through holes are arranged on the left side and the right side of the dustproof cover 2, the two lead 5 respectively penetrate through the two through holes and extend to the outer wall of the straight pipe 1, the tops of the two lead 5 are respectively electrically connected with a digital multimeter and a direct current power supply, the lead 5 is electrically connected with the external digital multimeter and the direct current power supply, the voltage and the current can be measured simultaneously, a user can conveniently control the applied current to serve as protective heating by controlling the applied current, the direct current power supply can be connected to a personal computer, the measured data is recorded, the applied voltage and the applied current of the protective heater 4 are controlled by a national instrument, the left side and the right side of the inner wall of the dustproof cover 2 are movably connected with slide blocks 6, connecting rods 7 are fixedly arranged on the tops of the two slide blocks 6, and wire clamps 8 are fixedly arranged on the outer walls of the two connecting rods 7, the two wire clamps 8 are both made of elastic rubber materials, one side of each wire clamp 8 which is opposite to the other side is respectively and movably connected with the outer wall of the corresponding side of the two leads 5, so that the two wire clamps 8 can respectively clamp the two leads 5, the wire clamp 8 made of elastic rubber is not conductive, errors on the detection result are avoided, the first spring 9 is fixedly arranged on one opposite side of the two sliding blocks 6, the inner wall of the top of the dustproof cover 2 is provided with a movable groove and a sliding groove, the movable groove is matched with the two connecting rods 7, the sliding groove is matched with the two sliding blocks 6, the bottoms of the two connecting rods 7 penetrate through the movable groove and are respectively fixedly connected with the tops of the two sliding blocks 6, the two sliders 6 can obtain elastic displacement through the support of the first spring 9, and further provide elastic support force for the two leads 5, so that measurement errors caused by mutual contact between the leads 5 can be prevented, and the two leads 5 can be prevented from being bent due to swinging.
Referring to fig. 5-6, the second springs 10 are fixedly installed on both left and right sides of the dust cap 2, the fixture blocks 11 are fixedly installed on the right side of the second springs 10, the inner walls of both left and right sides of the dust cap 2 are respectively provided with mounting grooves adapted to the two second springs 10, the two fixture blocks 11 are respectively movably connected to the inner walls of both left and right sides of the dust cap 2 through the two mounting grooves, so that the two fixture blocks 11 can respectively obtain elastic displacement through the two second springs 10, and the two second springs 10 are pressed to extend the two blocks 11 into the mounting grooves on the left and right sides of the dust cap 2, the right side swing joint of fixture block 11 has spacing dish 12, and the right side fixed mounting of spacing dish 12 has connecting block 13, and the slot with two fixture block 11 looks adaptations is all seted up to the left and right sides inner wall of straight tube 1, and the spacing groove with two spacing dish 12 looks adaptations is all seted up to the left and right sides of straight tube 1. Relative one side of two connecting blocks 13 runs through the left and right sides of straight tube 1 respectively and with two spacing dish 12 one side fixed connection that backs on the back of the body, make when two fixture blocks 11 receive two second spring 10 elastic support, can extend to in two slots of straight tube 1 and then make shield 2 fixed, only need the user to press two connecting blocks 13 respectively when needing to demolish shield 2, make two connecting blocks 13 relative movement, can extrude two fixture blocks 11 and two second spring 10, make shield 2 lift off.
When in use, please refer to fig. 1-6, the bottoms of the two leads 5 are respectively electrically connected with the left and right sides of the top of the protection heater 4, the tops of the two leads 5 pass through the through hole of the dust cap 2 and are electrically connected with the external digital multimeter and the direct current power supply, at this time, the dust cap 2 is pressed downwards from the top of the straight tube 1 to the inner wall of the straight tube 1, at this time, the clamping blocks 11 at the two sides of the outer part of the dust cap 2 are just clamped into the slots at the two sides of the inner wall of the straight tube 1, so as to complete the clamping between the dust cap 2 and the straight tube 1, at this time, the opposite sides of the two wire clamps 8 are respectively clamped with the outer walls at the opposite sides of the two leads 5, so as to elastically support the two leads 5, prevent the two leads 5 from contacting with each other, and serve as the point heat source of the protection heater 4 by controlling the external applied current, and finally, the bottom of the temperature sensor 3 is directly contacted with the skin part to be measured of the user, measurements were taken and recorded.
In summary, the protective heater 4 is introduced into the design of the temperature measuring probe, can reduce the temperature difference between the temperature sensor 3 and the lead 5, improve the accuracy of the temperature measurement result, apply the protective heater 4 thermistor probe to the skin of the human body, can realize non-invasive, accurate, rapid and local measurement of thermal conductivity, further improve the accuracy of temperature measurement, the dustproof cover 2 clamped with the straight pipe 1 is arranged on the inner wall of the top of the straight pipe 1, so that the dustproof cover 2 not only can protect the inner cavity of the straight pipe 1 and prevent dust from scattering into the straight pipe 1 to cause damage to the thermistor and influence the temperature measurement result, and two fastener 8 of 2 top inner walls swing joint of shield can also play the elastic support effect to two lead wires 5, prevent to contact each other between two lead wires 5, arouse the temperature measurement error.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (7)
1. A protection heating thermistor probe, includes straight tube (1), its characterized in that: the temperature control device comprises a straight pipe (1), a dust cover (2) and leads (5), wherein the inner wall of the top of the straight pipe (1) is movably connected with a dust cover (2), the inner wall of the bottom of the straight pipe (1) is fixedly provided with a protection heater (4), the left side and the right side of the top of the protection heater (4) are fixedly provided with leads (5), the left side and the right side of the inner wall of the dust cover (2) are movably connected with sliders (6), the tops of the two sliders (6) are fixedly provided with connecting rods (7), the outer walls of the two connecting rods (7) are fixedly provided with wire clamps (8), and one opposite side of the two sliders (6) is fixedly provided with a first spring (9);
the equal fixed mounting in both sides has second spring (10) about shield (2), the right side fixed mounting of second spring (10) has fixture block (11), the right side swing joint of fixture block (11) has spacing dish (12), the right side fixed mounting of spacing dish (12) has connecting block (13).
2. A protected heated thermistor probe according to claim 1, characterized in that: the material of straight tube (1) is made by fluorinated ethylene propylene, and the length of straight tube (1) is twenty millimeters, and temperature sensor (3) and protection heater (4) all are oval glass coating thermistor and constitute, and two thermistors' minor diameter is four millimeters at zero point and three millimeters.
3. A protected heated thermistor probe according to claim 1, characterized in that: the left side and the right side of the dustproof cover (2) are provided with through holes, the two lead wires (5) penetrate through the two through holes respectively and extend to the outer wall of the straight pipe (1), and the tops of the two lead wires (5) are electrically connected with a digital multimeter and a direct-current power supply respectively.
4. A protected heated thermistor probe according to claim 1, characterized in that: two fastener (8) are made by the elastic rubber material, the one side of carrying on the back of the body of two fastener (8) respectively with the relative one side outer wall swing joint of two lead wires (5).
5. A protected heated thermistor probe according to claim 1, characterized in that: the inner wall of the top of the dustproof cover (2) is provided with a movable groove and a sliding groove, the movable groove is matched with the two connecting rods (7), the sliding groove is matched with the two sliding blocks (6), and the bottoms of the two connecting rods (7) penetrate through the movable groove and are fixedly connected with the tops of the two sliding blocks (6) respectively.
6. A protected heated thermistor probe according to claim 1, characterized in that: the left and right sides inner wall of shield (2) all seted up with the mounting groove of two second spring (10) looks adaptations, two fixture blocks (11) are respectively through the left and right sides inner wall swing joint of two mounting grooves and shield (2).
7. A protected heated thermistor probe according to claim 1, characterized in that: the inner walls of the left side and the right side of the straight pipe (1) are provided with slots matched with the two clamping blocks (11), and the left side and the right side of the straight pipe (1) are provided with limiting grooves matched with the two limiting discs (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122205052.0U CN215414094U (en) | 2021-09-13 | 2021-09-13 | Protection heating thermistor probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122205052.0U CN215414094U (en) | 2021-09-13 | 2021-09-13 | Protection heating thermistor probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215414094U true CN215414094U (en) | 2022-01-04 |
Family
ID=79665643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122205052.0U Expired - Fee Related CN215414094U (en) | 2021-09-13 | 2021-09-13 | Protection heating thermistor probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215414094U (en) |
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2021
- 2021-09-13 CN CN202122205052.0U patent/CN215414094U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220104 |