CN106725354A - A kind of body temperature trans structure of the built-in AD conversion of quick thermal balance - Google Patents
A kind of body temperature trans structure of the built-in AD conversion of quick thermal balance Download PDFInfo
- Publication number
- CN106725354A CN106725354A CN201611107605.6A CN201611107605A CN106725354A CN 106725354 A CN106725354 A CN 106725354A CN 201611107605 A CN201611107605 A CN 201611107605A CN 106725354 A CN106725354 A CN 106725354A
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- metal shell
- body temperature
- conversion
- circuit board
- detection chip
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0271—Thermal or temperature sensors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/16—Details of sensor housings or probes; Details of structural supports for sensors
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a kind of body temperature trans structure of the quick built-in AD conversion of thermal balance；Including a metal shell, circuit board is provided with metal shell, detection chip is provided with circuit board, PN junction temperature sensor and AD conversion module are provided with detection chip, heat-conducting glue is filled between circuit board and metal shell, circuit board both sides are arranged with multiple heat conduction nails in parallel, and heat conduction nail two ends are connected with metal shell.Heat-conducting glue between metal shell of the present invention and circuit board and heat conduction nail, improve the efficiency of heat transfer, reduce the time of body temperature detection, reach the thermally equilibrated time and improve 38.9% than ordinary construction.The heat conductivility of probe for detecting temperature is drastically increased using integrated form detection chip, while the stability that improve probe ensures uniformity higher；The built-in OP amplifiers of detection chip and AD conversion module, body temperature data signal is exported by pin, increases the stability of signal, while being easy to body temperature trans compatible in different temperature sensing products.
Description
Technical field
The present invention relates to clinical thermometer field, more particularly to a kind of body temperature trans knot of the built-in AD conversion of quick thermal balance
Structure.
Background technology
Clinical thermometer in the market is usually mercury clinical thermometer, electronic thermometer, infrared thermometer.Mercury body temperature
Test period of meter takes around five minutes, and the testing time is very long, while mercury clinical thermometer belongs to fragile article, and mercury is
Pollution of the heavy metal to environment is very serious；Electronic thermometer product solves the problems, such as heavy metal pollution, existing electronic type
Using the detection method of thermistor more than clinical thermometer, the arrangement of temperature sensor being made up of thermistor is simply cheap, but
Discrete type is big in technique in process of production for it, and the ratio of precision of detection temperature is relatively low（Error is at ± 0.3 DEG C）, due to the pass of material
System, the performance of the temperature sensor of thermistor composition can be with the change of time and environment, and test data can produce drift, therefore
Electronic thermometer using thermistor cannot effectively ensure the precision of temperature detection；Infrared thermometer has without dirt
The features such as contaminating, detect quick, but have the disadvantage that precision is low, production cost is high.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art to provide a kind of the high-precision of quick built-in AD conversion of thermal balance
Degree body temperature trans frame mode.
To achieve the above object, the present invention is adopted the following technical scheme that：A kind of body temperature trans of built-in AD conversion；Bag
A metal shell is included, circuit board is provided with the metal shell, detection chip, the detection core are provided with the circuit board
PN junction temperature sensor and AD conversion module are provided with piece, heat-conducting glue, institute are filled between the circuit board and metal shell
State circuit board both sides and be arranged with multiple heat conduction nails in parallel, the heat conduction nail two ends are connected with metal shell.Using copper shell and
The quick conductive characteristic of copper heat conduction nail, makes probe reach thermal balance as early as possible.
Scheme is expanded on further, the metal shell is the cylindrical shell of one end open；The circuit board is near gold
The side for belonging to shell aperture is provided with two pins of transmission detection chip signal, and it is another that the detection chip is arranged on circuit board
Side；OP amplifiers are additionally provided with the detection chip, the PN junction temperature sensor, AD conversion module and OP amplifiers are successively
Electrical connection.
Scheme is expanded on further, the openend of the metal shell is provided with the bonnet of sealing, and the bonnet is opened and is formed with
For the through hole that pin wears；Insulated between the bonnet and pin.
Wherein, the bonnet is plastic material bonnet.Plastic construction uses Design on thermal insulation, reduces shadow of the periphery to probe
Ring.
Wherein, the bonnet or be copper bonnet, is provided with absolutely between the through-hole wall and pin of the copper bonnet
Edge ring.Copper bonnet design can accelerate probe and reach thermally equilibrated speed.
Scheme is expanded on further, the metal shell is copper shell, the heat conduction nail is followed closely for copper heat conduction.Heat conduction nail knot
Structure makes probe be rapidly achieved thermal balance, reduces the testing time.
It is expanded on further scheme, a diameter of 3-4mm of the metal shell, the length of the metal shell is 5-6mm.
Scheme is expanded on further, the detection chip is the oblong chips of 0.35*0.52mm sizes.
Scheme is expanded on further, the heat-conducting glue is heat conductive silica gel.
Beneficial effect of the present invention is：Heat-conducting glue and heat conduction nail between metal shell and circuit board, improves heat
The efficiency of transmission, reduces the time of body temperature detection, and reach the thermally equilibrated time improves 38.9% than ordinary construction；Using integrated
The detection chip of formula, drastically increases the heat conductivility of probe for detecting temperature, while improve the stability of probe, it is ensured that higher
Uniformity；The built-in OP amplifiers of detection chip and AD conversion module, body temperature data signal is exported by pin, increased signal
Stability, while being easy to body temperature trans compatible in the product of different temperature sensings.
Brief description of the drawings
Fig. 1 is dimensional structure diagram of the present invention.
Fig. 2 is planar structure schematic diagram of the present invention.
Drawing reference numeral explanation：1st, metal shell；2nd, circuit board；3rd, detection chip；4th, heat conduction nail；5th, pin；6th, heat-conducting glue；
7th, bonnet.
Specific embodiment
1 to accompanying drawing 2 introduces a kind of specific embodiment of the invention below in conjunction with the accompanying drawings.
A kind of body temperature trans of built-in AD conversion；Including a metal shell 1, FR4 materials are provided with metal shell 1
Circuit board 2, is provided with detection chip 3, detection chip 3 on circuit board 2 and is provided with PN junction temperature sensor and AD conversion module,
Heat-conducting glue 6 is filled between circuit board 2 and metal shell 1, the heat-conducting glue 6 is heat conductive silica gel, and heat conductive silica gel makes metal shell 1
Heat can be quickly delivered on PN junction temperature sensor；The both sides of circuit board 2 are arranged with six heat conduction nails 4, six heat conduction in parallel
Nail 4 point of two row is fixed in metal shell 1, and heat conduction is followed closely 4 two ends and is connected with metal shell 1.AD conversion module is produced for AD companies
AD7705, by the very weak input signal received from PN junction temperature sensor be directly changed into serial digital signal output,
Using the ADC of sigma-delta, 16 superperformances without error code are realized.
Metal shell 1 is the cylindrical shell of one end open；Circuit board 2 is set near the side of the opening of metal shell 1
There are two pins 5 of the transmission signal of detection chip 3, detection chip 3 is arranged on the opposite side of circuit board 2；Also set up in detection chip 3
There are OP amplifiers, OP amplifiers are Non-inverter Amp same-phase amplifying circuits, PN junction temperature sensor, AD conversion module
It is sequentially connected electrically with OP amplifiers.The size of circuit board 2 is 3.5mm*3.5mm, and memory is additionally provided with circuit board 2, is stored
Device and detection chip 3 are electrically connected, and the data characteristics of the storage detection of detection chip 3, each sensor is led because of the fine difference for producing
Causing the data of the detection of detection chip 3 has certain otherness, and detection chip 3 is by data variation difference and the data characteristics of demarcation
It is stored within memory so that the body temperature trans that each is produced ensures the uniformity of detection data.
The openend of metal shell 1 is provided with the bonnet 7 of sealing, and bonnet 7 opens the through hole for being formed with and being worn for pin 5；Afterwards
Insulated between lid 7 and pin 5.Bonnet 7 is copper bonnet 7, and insulation is provided between the through-hole wall and pin 5 of copper bonnet 7
Ring.Metal shell 1 is copper shell, and heat conduction nail 4 is copper heat conduction nail 4；A diameter of 4mm of metal shell 1, length is 6mm；Visit
It is the oblong chips of 0.35*0.52mm sizes to survey chip 3.Welded seal is fixed between copper bonnet 7 and copper shell.
Detection chip 3 is internally integrated using the junction voltage of PN junction and the linear relationship measurement temperature of temperature, detection chip 3
The AD conversion module and digitlization output circuit of 14；Digitlization temperature after two pins 5 export detect and conversion
Degrees of data, can easily connect the I/O of various general MCU.Can be in the range of 27 °C -47 °C by single point temperature calibration
Ensure ± 0.05 °C of certainty of measurement, temperature resolution reaches 0.01 °C.
Six jacks of system are opened in the side of metal shell 1 in corresponding position, will be welded after the insertion of heat conduction nail 4, will be with detection
The circuit board 2 of chip 3 is placed between two row's heat conduction nail 4, irrigates heat-conducting glue 6, buckles bonnet 7 and bonnet 7 is welded with metal shell 1
Connect fixation；Heat conduction nail 4 can accelerate the heat of metal shell 1 toward transmission on heat-conducting glue 6 and detection chip 3, shorten body temperature inspection
The time of survey.
Circuit board 2 covers copper multi-through hole and designs using two-sided large area, is on the one hand easy to production, on the other hand can improve heat conduction
Efficiency；Thermal balance is reached in Water Tank with Temp.-controlled by this design present invention contrast mercurial thermometer（Reach 0.1 DEG C of error range）'s
Time data contrast is as follows（Test environment temperature is 25 DEG C）：
| Tank temperature | Mercurial thermometer（Omron） | Present invention probe |
| 35℃ | 353 seconds | 216 seconds |
| 37.5℃ | 412 seconds | 254 seconds |
| 39℃ | 486 seconds | 294 seconds |
Be can be seen that by above test data：38.9% is improve the time required to reaching equalized temperature point：
（353+412+486-216-254-294）/(353+412+486)=38.9%.
The above is not imposed any restrictions to technical scope of the invention, all according to the technology of the present invention essence, to the above
Embodiment any modification, equivalent variations and the modification made, still fall within the range of technical scheme.
Claims (9)
1. a kind of body temperature trans structure of the built-in AD conversion of quick thermal balance；It is characterized in that：It is described including a metal shell
Circuit board is provided with metal shell, detection chip is provided with the circuit board, PN junction temperature is provided with the detection chip
Degree sensor and AD conversion module, are filled with heat-conducting glue between the circuit board and metal shell, the circuit board both sides are parallel
Multiple heat conduction nails are provided with, the heat conduction nail two ends are connected with metal shell.
2. the body temperature trans structure of a kind of quick built-in AD conversion of thermal balance according to claim 1, it is characterised in that：
The metal shell is the cylindrical shell of one end open；The circuit board is provided with two in the side near metal shell opening
The pin of individual transmission detection chip signal, the detection chip is arranged on circuit board opposite side；Also set up in the detection chip
There are OP amplifiers, the PN junction temperature sensor, AD conversion module and OP amplifiers are sequentially connected electrically.
3. the body temperature trans structure of a kind of quick built-in AD conversion of thermal balance according to claim 2, it is characterised in that：
The openend of the metal shell is provided with the bonnet of sealing, and the bonnet opens the through hole for being formed with and being worn for pin；After described
Insulated between lid and pin.
4. the body temperature trans structure of a kind of quick built-in AD conversion of thermal balance according to claim 3, it is characterised in that：
The bonnet is plastic material bonnet.
5. the body temperature trans structure of a kind of quick built-in AD conversion of thermal balance according to claim 3, it is characterised in that：
The bonnet is copper bonnet, and dead ring is provided between the through-hole wall and pin of the copper bonnet.
6. the body temperature trans structure of a kind of quick built-in AD conversion of thermal balance according to claim 2, it is characterised in that：
The metal shell is copper shell, and the heat conduction nail is followed closely for copper heat conduction.
7. the body temperature trans structure of a kind of quick built-in AD conversion of thermal balance according to claim 1, it is characterised in that：
A diameter of 3-4mm of the metal shell, the length of the metal shell is 5-6mm.
8. the body temperature trans structure of a kind of quick built-in AD conversion of thermal balance according to claim 1, it is characterised in that：
The detection chip is the oblong chips of 0.35*0.52mm sizes.
9. the body temperature trans structure of a kind of quick built-in AD conversion of thermal balance according to claim 1, it is characterised in that：
The heat-conducting glue is heat conductive silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611107605.6A CN106725354A (en) | 2016-12-06 | 2016-12-06 | A kind of body temperature trans structure of the built-in AD conversion of quick thermal balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611107605.6A CN106725354A (en) | 2016-12-06 | 2016-12-06 | A kind of body temperature trans structure of the built-in AD conversion of quick thermal balance |
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| Publication Number | Publication Date |
|---|---|
| CN106725354A true CN106725354A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611107605.6A Pending CN106725354A (en) | 2016-12-06 | 2016-12-06 | A kind of body temperature trans structure of the built-in AD conversion of quick thermal balance |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030067960A1 (en) * | 2001-10-09 | 2003-04-10 | Nyffenegger Johannes F. | Precision temperature probe having fast response |
| CN103344356A (en) * | 2013-06-26 | 2013-10-09 | 中冶长天国际工程有限责任公司 | Temperature measuring system |
| CN104873176A (en) * | 2015-05-11 | 2015-09-02 | 舒建文 | Novel electric thermometer |
| US20160181502A1 (en) * | 2014-12-19 | 2016-06-23 | Commissariat à l'Energie Atomique et aux Energies Alternatives | Differential temperature sensor |
| CN105987764A (en) * | 2015-02-04 | 2016-10-05 | 核工业北京地质研究院 | Downhole temperature measurement probing pipe enabling fast measurement |
| CN206518548U (en) * | 2016-12-06 | 2017-09-26 | 东莞市宇朔泰合健康科技有限公司 | The body temperature transducer structure of AD conversion built in a kind of quick thermal balance |
-
2016
- 2016-12-06 CN CN201611107605.6A patent/CN106725354A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030067960A1 (en) * | 2001-10-09 | 2003-04-10 | Nyffenegger Johannes F. | Precision temperature probe having fast response |
| CN103344356A (en) * | 2013-06-26 | 2013-10-09 | 中冶长天国际工程有限责任公司 | Temperature measuring system |
| US20160181502A1 (en) * | 2014-12-19 | 2016-06-23 | Commissariat à l'Energie Atomique et aux Energies Alternatives | Differential temperature sensor |
| CN105987764A (en) * | 2015-02-04 | 2016-10-05 | 核工业北京地质研究院 | Downhole temperature measurement probing pipe enabling fast measurement |
| CN104873176A (en) * | 2015-05-11 | 2015-09-02 | 舒建文 | Novel electric thermometer |
| CN206518548U (en) * | 2016-12-06 | 2017-09-26 | 东莞市宇朔泰合健康科技有限公司 | The body temperature transducer structure of AD conversion built in a kind of quick thermal balance |
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