CN206518548U - The body temperature transducer structure of AD conversion built in a kind of quick thermal balance - Google Patents
The body temperature transducer structure of AD conversion built in a kind of quick thermal balance Download PDFInfo
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- CN206518548U CN206518548U CN201621326529.3U CN201621326529U CN206518548U CN 206518548 U CN206518548 U CN 206518548U CN 201621326529 U CN201621326529 U CN 201621326529U CN 206518548 U CN206518548 U CN 206518548U
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- metal shell
- body temperature
- circuit board
- detection chip
- thermal balance
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Abstract
The utility model discloses a kind of body temperature transducer structure of AD conversion built in quick 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 and heat conduction nail between the utility model metal shell and circuit board, improve the efficiency of heat transfer, reduce the time of body temperature detection, reach that the thermally equilibrated time improves 38.9% than ordinary construction.The heat conductivility of probe for detecting temperature is drastically increased using integrated form detection chip, while the stability for improving probe ensures higher uniformity；OP amplifiers and AD conversion module built in detection chip, body temperature data signal is exported by pin, increases the stability of signal, while being easy to body temperature transducer compatibility into different temperature sensing products.
Description
Technical field
The utility model is related to clinical thermometer field, the body temperature transducer of AD conversion built in more particularly to a kind 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；The problem of electronic thermometer product solves heavy metal pollution, existing electronic type
The detection method of thermistor being used clinical thermometer, the arrangement of temperature sensor being made up of thermistor is simply cheap more, 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 with time and environment change, test data can produce drift, therefore
The precision of temperature detection can not effectively be ensured using the electronic thermometer of thermistor；Infrared thermometer has without dirt
The features such as contaminating, detect quick, but have the disadvantage that precision is low, production cost is high.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art to provide AD conversion built in a kind of quick thermal balance
High-precision body temperature transducer frame mode.
To achieve the above object, the utility model is adopted the following technical scheme that：A kind of body temperature sensing of built-in AD conversion
Device；Including a metal shell, it is provided with the metal shell on circuit board, the circuit board and is provided with detection chip, it is described
PN junction temperature sensor and AD conversion module are provided with detection chip, heat conduction is filled between the circuit board and metal shell
Glue, the circuit board both sides are arranged with multiple heat conduction nails in parallel, and the heat conduction nail two ends are connected with metal shell.Outside copper
The quick conductive characteristic of shell and 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 close to gold
The side of category shell aperture is provided with the pin of two transmission detection chip signals, 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, which is opened, to be formed with
The through hole worn for pin；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 for 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 copper heat conduction nail.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.
The utility model beneficial effect is：Heat-conducting glue and heat conduction nail between metal shell and circuit board, are improved
The efficiency of heat transfer, reduces the time of body temperature detection, reaches that the thermally equilibrated time improves 38.9% than ordinary construction；Using
The detection chip of integrated form, drastically increases the heat conductivility of probe for detecting temperature, while improving the stability of probe, it is ensured that compared with
High uniformity；OP amplifiers and AD conversion module built in detection chip, export body temperature data signal by pin, add letter
Number stability, while be easy to body temperature transducer compatibility into the product of different temperature sensings.
Brief description of the drawings
Fig. 1 is the utility model dimensional structure diagram.
Fig. 2 is the utility model planar structure schematic diagram.
Drawing reference numeral explanation：1st, metal shell；2nd, circuit board；3rd, detection chip；4th, heat conduction is followed closely；5th, pin；6th, heat-conducting glue；
7th, bonnet.
Embodiment
Below in conjunction with the accompanying drawings 1 a kind of embodiment of the present utility model is introduced to accompanying drawing 2.
A kind of body temperature transducer of built-in AD conversion；Including a metal shell 1, FR4 materials are provided with metal shell 1
It is provided with circuit board 2, circuit board 2 in detection chip 3, detection chip 3 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
4 point of two row of nail 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 in the side being open close to metal shell 1
There is the pin 5 of two transmission signals 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 to be additionally provided with memory on 3.5mm*3.5mm, circuit board 2, is stored
Device and detection chip 3 are electrically connected, and the data characteristics that storage detection chip 3 is detected, each sensor is led because of the fine difference of production
The data for causing detection chip 3 to detect have 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 transducer each 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
Survey the oblong chips that chip 3 is 0.35*0.52mm sizes.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；The digitlization temperature after detect and conversion is exported by two pins 5
Degrees of data, can easily connect various general MCU I/O.Can be in the range of 27 °C -47 °C by single point temperature calibration
The measurement accuracy of ± 0.05 °C of guarantee, temperature resolution reaches 0.01 °C.
The side of metal shell 1 opens six jacks of system 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, is irrigated heat-conducting glue 6, is buckled bonnet 7 and weld bonnet 7 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 the design of copper multi-through hole 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 the utility model contrast mercurial thermometer（Reach 0.1 DEG C of error model
Enclose）Time data contrast it is as follows（Test environment temperature is 25 DEG C）：
| Tank temperature | Mercurial thermometer（Omron） | The utility model is popped one's head in |
| 35℃ | 353 seconds | 216 seconds |
| 37.5℃ | 412 seconds | 254 seconds |
| 39℃ | 486 seconds | 294 seconds |
It can be seen that by above test data：38.9% is improved the time required to reaching equalized temperature point：
（353+412+486-216-254-294）/(353+412+486)=38.9%.
It is described above that not technical scope of the present utility model is imposed any restrictions, it is all real according to the utility model technology
Matter, any modification, equivalent variations and modification that the embodiment to more than is made, still falls within the technical solution of the utility model
In the range of.
Claims (9)
1. the body temperature transducer structure of AD conversion built in a kind of quick thermal balance；It is characterized in that：It is described including a metal shell
It is provided with metal shell on circuit board, the circuit board and is provided with detection chip, PN junction temperature is provided with the detection chip
Sensor and AD conversion module are spent, heat-conducting glue is filled 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 transducer structure of AD conversion built in a kind of quick 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 being provided with two close to the side of 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 transducer structure of AD conversion built in a kind of quick 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 transducer structure of AD conversion built in a kind of quick thermal balance according to claim 3, it is characterised in that：
The bonnet is plastic material bonnet.
5. the body temperature transducer structure of AD conversion built in a kind of quick 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 transducer structure of AD conversion built in a kind of quick thermal balance according to claim 2, it is characterised in that：
The metal shell is copper shell, and the heat conduction nail is copper heat conduction nail.
7. the body temperature transducer structure of AD conversion built in a kind of quick 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 transducer structure of AD conversion built in a kind of quick 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 transducer structure of AD conversion built in a kind of quick 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 |
|---|---|---|---|
| CN201621326529.3U CN206518548U (en) | 2016-12-06 | 2016-12-06 | The body temperature transducer structure of AD conversion built in a kind of quick thermal balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621326529.3U CN206518548U (en) | 2016-12-06 | 2016-12-06 | The body temperature transducer structure of AD conversion built in a kind of quick thermal balance |
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| Publication Number | Publication Date |
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| CN206518548U true CN206518548U (en) | 2017-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621326529.3U Active CN206518548U (en) | 2016-12-06 | 2016-12-06 | The body temperature transducer structure of AD conversion built in a kind of quick thermal balance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725354A (en) * | 2016-12-06 | 2017-05-31 | 东莞市宇朔泰合健康科技有限公司 | A kind of body temperature trans structure of the built-in AD conversion of quick thermal balance |
-
2016
- 2016-12-06 CN CN201621326529.3U patent/CN206518548U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725354A (en) * | 2016-12-06 | 2017-05-31 | 东莞市宇朔泰合健康科技有限公司 | A kind of body temperature trans structure of the built-in AD conversion of quick thermal balance |
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