CN201488830U - Electronic thermometer - Google Patents
Electronic thermometer Download PDFInfo
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- CN201488830U CN201488830U CN2009201617446U CN200920161744U CN201488830U CN 201488830 U CN201488830 U CN 201488830U CN 2009201617446 U CN2009201617446 U CN 2009201617446U CN 200920161744 U CN200920161744 U CN 200920161744U CN 201488830 U CN201488830 U CN 201488830U
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Abstract
The utility model provides an electronic thermometer comprising a circuit board. The circuit board is provided with a chip (IC), a sensor, a surface mounting resistor and a temperature compensation module, wherein the chip is respectively connected with the sensor, the surface mounting resistor and the temperature compensation module; the temperature compensation module is connected with at least one signal end; and when calibrating the electronic thermometer, the surface mounting resistor is used as a calibrating resistor, the chip is used to automatically sense an error value between the sensor and the calibrating resistor, and according to the error value, the connection relation among the temperature compensation module and the signal ends is adjusted to compensate the error value. Therefore, the temperature measurement accuracy rate of the electronic thermometer is improved.
Description
Technical field
The utility model relates to a kind of electronic thermometer, particularly a kind of electronic thermometer with the temperature compensation module Tc.
Background technology
When existing electronic thermometer was produced, it was that the resistance value of sensor is divided into several classes, and the resistance value of calibrated resistance is also divided into several classes; To do a collocation according to the resistance value of sensor and calibrated resistance then, in principle, when the resistance value of sensor and calibrated resistance was identical, the sensing reference temperature of described electronic thermometer was Celsius 37 to spend.But these electronic components of sensor and calibrated resistance are when producing, and these electronic component products itself promptly error amount may occur.According to the structure of existing electronic thermometer and the mode of corresponding detection error amount thereof, after whole electronic thermometer assembling need being finished, the measuring junction (steel cap) of electronic thermometer is placed the tank of certain depth, to judge whether coincidence detection standard of this electronic thermometer.
Therefore; producing an electric body-temperature timing; temperature correction all is to utilize sensor and calibrated resistance are complied with the size of its resistance value; manually to divide into several classes, match according to similar again, reach error within the specific limits; and then reach temperature error+-0.1 the degree C in; but this mode regular meeting has categorical measure inconsistent, causes sensor and calibrated resistance will be equipped with a little stocks more, has improved production cost.
The utility model proposes a kind of electronic thermometer, to improve above-mentioned disappearance for this reason.
Summary of the invention
Fundamental purpose of the present utility model is providing a kind of electronic thermometer, it is not need calibrated resistance, sensor are classified with manual type, after the utility model uses surface adhesion type resistance as calibrated resistance, obtain error amount after, directly with temperature compensation module round-off error value.
Another purpose of the present utility model is providing a kind of electronic thermometer, and it is effectively to reduce various resistance and sensor stock, alleviates the pressure on the cost.
Another purpose of the present utility model is providing a kind of electronic thermometer, it is to be base measuring temperature in the movement assembling of electronic thermometer, that is after not needing as prior art, to assemble complete electronic thermometer, measuring junction (steel cap) with electronic thermometer gos deep into the medium trivial step of tank again, as when finding defective products, need be again with electronic thermometer heavy industry or the like, so the utility model can be base measuring temperature in the movement assembling of electronic thermometer, shortcoming that can effective above-mentioned prior art.
The utility model provides a kind of electronic thermometer, and it comprises circuit board, and on the circuit board being has chip, sensor, surface adhesion type resistance and temperature compensation module, and chip is connected with sensor, surface adhesion type resistance and temperature compensation module respectively.Temperature compensation module is connected with at least one signal end, calibrate described electric body-temperature timing, with surface adhesion type resistance as calibrated resistance, utilize the error amount between described sensor of chip Auto-Sensing and calibrated resistance, adjust annexation between described temperature compensation module and described a plurality of signal end to compensate described error amount according to error amount, promote the thermometric accuracy rate of described electronic thermometer thus.
Therefore the utility model does not need surface adhesion type resistance, sensor are classified with manual type, and the utility model uses surface adhesion type resistance as calibrated resistance, and after obtaining error amount, directly with temperature compensation module round-off error value.The utility model can effectively reduce various resistance and sensor stock, alleviates the pressure on the cost.The utility model can be a base measuring temperature in the movement assembling of electronic thermometer also, that is after not needing as prior art, to assemble complete electronic thermometer, measuring junction (steel cap) with electronic thermometer gos deep into the medium trivial step of tank again, as when finding defective products, need be again with electronic thermometer heavy industry or the like, therefore the utility model can be a base measuring temperature in the movement assembling of electronic thermometer, shortcoming that can effective above-mentioned prior art.
Description of drawings
Fig. 1 is the block schematic diagram of an embodiment of the present utility model;
Fig. 2 A～Fig. 2 H is the temperature compensation module of an embodiment of the present utility model and the annexation of signal end;
Fig. 3 is the block schematic diagram of another embodiment of the present utility model;
Fig. 4 A～Fig. 4 I is the temperature compensation module of another embodiment of the present utility model and the annexation of signal end.
Description of reference numerals: 32-circuit board; The 34-chip; The 36-sensor; The 38-temperature compensation module; 40-surface adhesion type resistance; The 42-signal end; 52-first stitch; 54-second stitch; 56-the 3rd stitch; 62-the 4th stitch; 64-the 5th stitch; 66-the one VDD; 68-the 2nd VDD; 70-the one GROUND; 72-the 2nd GROUND; 422-VDD; 424-GROUND.
Embodiment
Below in conjunction with accompanying drawing, be described in more detail with other technical characterictic and advantage the utility model is above-mentioned.
For describing electronic thermometer of the present utility model in detail, please in the lump with reference to Fig. 1.Electronic thermometer of the present utility model comprises a circuit board 32, on the circuit board 32 be have chip 34, sensor 36, temperature compensation module 38 and surface adhesion type resistance 40 (surface mounted devices, SMD).Chip 34 respectively with sensor 36, temperature compensation module 38 and surface adhesion type resistance 40 (surface mounted devices, SMD) connect, wherein, surface adhesion type resistance 40 is to utilize surface adhering technology (Surface MountingTechnology, SMT) be connected with circuit board 32, surface adhesion type resistance 40 is intended for calibrated resistance.And temperature compensation module 38 is electrically connected with at least one signal end 42, and wherein the kind of signal end 42 comprises VDD and GROUND, and the signal end 42 of present embodiment is VDD.During the calibrated electronic clinical thermometer, with surface adhesion type resistance 40 as calibrated resistance, utilize an error amount of 40 of chip 34 automatic investigating sensors 36 and surface adhesion type resistance, the annexation of adjusting 42 of described temperature compensation module 38 and described a plurality of signal ends according to error amount promotes the thermometric accuracy rate of described electronic thermometer thus to compensate described error amount.
Below enumerate an embodiment, go on to say the utility model and how adjust the annexation of 42 of described temperature compensation module 38 and a plurality of signal ends to compensate described error amount according to error amount, please in the lump with reference to Fig. 2 A～Fig. 2 G, Fig. 2 A～Fig. 2 G is the annexation of described temperature compensation module 38 and signal end 42VDD.By among the figure as can be known, temperature compensation module 38 comprises one first stitch 52, one second stitch 54 and one the 3rd stitch 56, signal end 42VDD provides three contacts corresponding with first stitch 52, second stitch 54 and the 3rd stitch 56 respectively.Present embodiment is an annexation of adjusting signal end 42VDD and first stitch 52, second stitch 54 and the 3rd stitch 56 according to error amount.
Wherein, when error amount is Celsius 0 when spending, be not connected between VDD and described first stitch 52, described second stitch 54 and described the 3rd stitch 56, shown in 2A figure.When error amount is Celsius+0.1 when spending, VDD is connected with first stitch 52 and second stitch 54 respectively, and VDD is not connected with the 3rd stitch 56, shown in 2B figure.When error amount is Celsius+0.2 when spending, VDD is connected with second stitch 54 and the 3rd stitch 56 respectively, and VDD is not connected with first stitch 52, shown in Fig. 2 C.When error amount is Celsius+0.3 when spending, VDD is connected with first stitch 52 and the 3rd stitch 56 respectively, and VDD is not connected with second stitch 54, shown in Fig. 2 D.When error amount is Celsius+0.4 when spending, VDD is connected with first stitch 52, second stitch 54 and the 3rd stitch 56 respectively, shown in 2E figure.When error amount is Celsius-0.1 when spending, VDD is connected with first stitch 52, and VDD is not connected with second stitch 54 and the 3rd stitch 56, shown in 2F figure.When error amount is Celsius-0.2 when spending, VDD is connected with second stitch 54, and VDD is not connected with first stitch 52 and the 3rd stitch 56, shown in 2G figure.When error amount is Celsius-0.3 when spending, VDD is connected with the 3rd stitch 56, and VDD first stitch 52 and second stitch 54 do not connect, shown in 2H figure.
Again for instance, the measurement temperature of moving electronic thermometer when the chip Auto-Sensing is 36.7 degree Celsius, 37 degree Celsius of criterion distance have+0.3 degree, the action that must compensate this moment to this electronic thermometer, be about to VDD and be connected with first stitch and the 3rd stitch respectively, and VDD is not connected with second stitch.
The annexation of above-mentioned error amount and signal end VDD and first stitch, second stitch and the 3rd stitch, can put in order under tabulate 1, wherein " sky " be not for connecting.
Table 1:
| Error amount | VDD1PIN | VDD2PIN | VDD3PIN |
| Normally | Empty | Empty | Empty |
| + 0.1 degree C | VDD | VDD | Empty |
| + 0.2 degree C | Empty | VDD | VDD |
| + 0.3 degree C | VDD | Empty | VDD |
| + 0.4 degree C | VDD | VDD | VDD |
| -0.1 degree C | VDD | Empty | Empty |
| -0.2 degree C | Empty | VDD | Empty |
| -0.3 degree C | Empty | Empty | VDD |
A last embodiment is that temperature compensation module is provided with 3 stitch, below going on to say temperature compensation module of the present utility model can also adopt two stitch to implement temperature compensation, the temperature compensation module of present embodiment is slightly different with a last embodiment with relation between signal end, the signal end of wherein going up an embodiment has only the signal end of employing VDD, present embodiment includes VDD422, GROUND424 (as shown in Figure 3), and the signal end of present embodiment has two VDD contacts and two GROUND contacts, is represented as a VDD respectively, the 2nd VDD, the one GROUND, the 2nd GROUND.For fear of obscuring with a last embodiment, two stitch of the temperature compensation module of the present utility model of present embodiment are called after the 4th stitch and the 5th stitch respectively.
Below go on to say present embodiment and how adjust annexation between described temperature compensation module and a plurality of signal end to compensate described error amount according to error amount, please in the lump with reference to Fig. 3 and Fig. 4 A～Fig. 4 I, Fig. 4 A～Fig. 4 I is the annexation of described temperature compensation module and signal end VDD, GROUND.As among the figure as can be known, temperature compensation module comprises the 4th stitch 62 and the 5th stitch 64, signal end has a VDD66, the 2nd VDD68, a GROUND70, the 2nd GROUND72.
When wherein adjusting, when error amount is that error amount is Celsius 0 when spending, be not connected between described the 4th stitch 62 and described the 5th stitch 64 and a described VDD66, described the 2nd VDD68, a described GROUND70 and described the 2nd GROUND72, shown in Fig. 4 A.When error amount is Celsius+0.1 when spending, the 4th stitch 62 is connected with a VDD66, and the 5th stitch 64 is not-connected status, shown in Fig. 4 B.When error amount is Celsius+0.2 when spending, the 5th stitch 64 is connected with the 2nd VDD68, and the 4th stitch 62 is not-connected status, shown in Fig. 4 C.When error amount is Celsius+0.3 when spending, the 4th stitch 62 is connected with a VDD66, and the 5th stitch 64 is connected with the 2nd VDD68, shown in Fig. 4 D.When error amount is Celsius+0.4 when spending, the 4th stitch 62 is connected with a GROUND70, and the 5th stitch 64 is connected with the 2nd VDD68, shown in Fig. 4 E.When error amount is Celsius-0.1 when spending, the 4th stitch 62 is connected with a GROUND70, and the 5th stitch 64 is not-connected status, shown in Fig. 4 F.When error amount is Celsius-0.2 when spending, the 5th stitch 64 is connected with the 2nd GROUND72, and the 4th stitch 62 is not-connected status, shown in Fig. 4 G.When error amount is Celsius-0.3 when spending, the 4th stitch 62 is connected with a GROUND70, and the 5th stitch 64 is connected with the 2nd GROUND72, shown in Fig. 4 H.When error amount is Celsius-0.4 when spending, the 4th stitch 62 is connected with a VDD66, and the 5th stitch 64 is connected with the 2nd GROUND72, shown in Fig. 4 I.
The annexation of above-mentioned error amount and signal end VDD, GROUND (GND) and the 4th stitch, the 5th stitch, can put in order under tabulate 2, wherein " sky " for not connecting, (1) represents the 1st, (2) represent the 2nd.
Table 2:
| Two PIN three-states | 1PIN | 2PIN |
| Normally | Empty | Empty |
| + 0.1 degree C | (1)VDD | Empty |
| + 0.2 degree C | Empty | (2)VDD |
| + 0.3 degree C | (1)VDD | (2)VDD |
| + 0.4 degree C | (1)GND | (2)VDD |
| -0.1 degree C | (1)GND | Empty |
| -0.2 degree C | Empty | (2)GND |
| -0.3 degree C | (1)GND | (2)GND |
| -0.4 degree C | (1)VDD | (2)GND |
The utility model provides a kind of electronic thermometer, and it is to comprise circuit board, and on the circuit board being has chip, sensor, surface adhesion type resistance and temperature compensation module, and chip is connected with sensor, surface adhesion type resistance and temperature compensation module respectively.Temperature compensation module is connected with at least one signal end, calibrate described electric body-temperature timing, with surface adhesion type resistance as calibrated resistance, utilize the error amount between described sensor of chip Auto-Sensing and calibrated resistance, adjust annexation between described temperature compensation module and described a plurality of signal end to compensate described error amount according to error amount, promote the thermometric accuracy rate of described electronic thermometer thus.
Therefore the utility model does not need surface adhesion type resistance, sensor are classified with manual type, and the utility model uses surface adhesion type resistance as calibrated resistance, and after obtaining error amount, directly with temperature compensation module round-off error value.The utility model can effectively reduce various resistance and sensor stock, alleviates the pressure on the cost.The utility model can be a base measuring temperature in the movement assembling of electronic thermometer also, that is after not needing as prior art, to assemble complete electronic thermometer, measuring junction (steel cap) with electronic thermometer gos deep into the medium trivial step of tank again, as when finding defective products, need be again with electronic thermometer heavy industry or the like, therefore the utility model can be a base measuring temperature in the movement assembling of electronic thermometer, shortcoming that can effective above-mentioned prior art.
More than explanation is just illustrative for the utility model; and it is nonrestrictive; those of ordinary skills understand; under the situation of the spirit and scope that do not break away from following claims and limited; can make many modifications; change, or equivalence, but all will fall in the protection domain of the present utility model.
Claims (6)
1. electronic thermometer is characterized in that it comprises:
One circuit board;
One chip, a sensor and a temperature compensation module are positioned at described circuit board, and described chip is connected with described sensor and described temperature compensation module respectively;
One surface adhesion type resistance, as calibrated resistance, described surface adhesion type resistance is positioned at described circuit board, and described surface adhesion type resistance is connected with described chip;
At least one signal end is connected with described temperature compensation module; And
Calibrate described electric body-temperature timing, with described surface adhesion type resistance as calibrated resistance, utilize the error amount between described sensor of described chip Auto-Sensing and described calibrated resistance, adjust annexation between described temperature compensation module and described a plurality of signal end to compensate described error amount according to this error amount.
2. electronic thermometer according to claim 1 is characterized in that, described surface adhesion type resistance is to utilize a surface adhering technology to be connected with described circuit board.
3. electronic thermometer according to claim 1, it is characterized in that, described temperature compensation module comprises one first stitch, one second stitch and one the 3rd stitch, described a plurality of signal end is VDD, adjusts the annexation of described VDD and described first stitch, described second stitch and described the 3rd stitch according to described error amount.
4. electronic thermometer according to claim 3 is characterized in that, described error amount is Celsius 0 when spending, and is not connected between VDD and described first stitch, described second stitch and described the 3rd stitch; Described error amount is Celsius+0.1 when spending, and VDD is connected with described first stitch and described second stitch respectively, and VDD is not connected with described the 3rd stitch; Described error amount is Celsius+0.2 when spending, and VDD is connected with described second stitch and described the 3rd stitch respectively, and VDD is not connected with described first stitch; Described error amount is Celsius+0.3 when spending, and VDD is connected with described first stitch and described the 3rd stitch respectively, and VDD is not connected with described second stitch; Described error amount is Celsius+0.4 when spending, and VDD is connected with described first stitch, described second stitch and described the 3rd stitch respectively; Described error amount is Celsius-0.1 when spending, and VDD is connected with described first stitch, and VDD is not connected with described second stitch and described the 3rd stitch; Described error amount is Celsius-0.2 when spending, and VDD is connected with described second stitch, and VDD is not connected with described first stitch and described the 3rd stitch; Described error amount is Celsius-0.3 when spending, and VDD is connected with described the 3rd stitch, and VDD is not connected with described first stitch and described second stitch.
5. electronic thermometer according to claim 1, it is characterized in that, described temperature compensation module comprises one the 4th stitch, one the 5th stitch, described a plurality of signal end comprises one the one VDD, one the 2nd VDD, one the one GROUND and one the 2nd GROUND, adjusts the annexation of a described VDD, described the 2nd VDD, a described GROUND and described the 2nd GROUND and described the 4th stitch and described the 5th stitch according to described error amount.
6. electronic thermometer according to claim 5, it is characterized in that, described error amount is Celsius 0 when spending, and is not connected between described the 4th stitch and described the 5th stitch and a described VDD, described the 2nd VDD, a described GROUND and described the 2nd GROUND; Described error amount is Celsius+0.1 when spending, and described the 4th stitch is connected with a described VDD, and described the 5th stitch is a not-connected status; Described error amount is Celsius+0.2 when spending, and described the 5th stitch is connected with described the 2nd VDD, and described the 4th stitch is a not-connected status; Described error amount is Celsius+0.3 when spending, and described the 4th stitch is connected with a described VDD, and described the 5th stitch is connected with described the 2nd VDD; Described error amount is Celsius+0.4 when spending, and described the 4th stitch is connected with a described GROUND, and described the 5th stitch is connected with described the 2nd VDD; Described error amount is Celsius-0.1 when spending, and described the 4th stitch is connected with a described GROUND, and described the 5th stitch is a not-connected status; Described error amount is Celsius-0.2 when spending, and described the 5th stitch is connected with described the 2nd GROUND, and described the 4th stitch is a not-connected status; Described error amount is Celsius-0.3 when spending, and described the 4th stitch is connected with a described GROUND, and described the 5th stitch is connected with described the 2nd GROUND; Described error amount is Celsius-0.4 when spending, and described the 4th stitch is connected with a described VDD, and described the 5th stitch is connected with described the 2nd GROUND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201617446U CN201488830U (en) | 2009-07-23 | 2009-07-23 | Electronic thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201617446U CN201488830U (en) | 2009-07-23 | 2009-07-23 | Electronic thermometer |
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| Publication Number | Publication Date |
|---|---|
| CN201488830U true CN201488830U (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201617446U Expired - Fee Related CN201488830U (en) | 2009-07-23 | 2009-07-23 | Electronic thermometer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105942988A (en) * | 2016-05-17 | 2016-09-21 | 杭州欧汇科技有限公司 | Electronic thermometer and calibration method based on electronic thermometer |
| CN107228719A (en) * | 2017-06-13 | 2017-10-03 | 青岛海信宽带多媒体技术有限公司 | Temperature correction method, module to be measured and temperature calibration instrument |
| CN109632143A (en) * | 2019-01-22 | 2019-04-16 | 中国计量科学研究院 | A kind of self calibration clinical thermometer |
| WO2022142237A1 (en) * | 2020-12-29 | 2022-07-07 | 华润微集成电路(无锡)有限公司 | Predictive-type electronic body temperature thermometer circuit structure implementing temperature compensation |
-
2009
- 2009-07-23 CN CN2009201617446U patent/CN201488830U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105942988A (en) * | 2016-05-17 | 2016-09-21 | 杭州欧汇科技有限公司 | Electronic thermometer and calibration method based on electronic thermometer |
| CN107228719A (en) * | 2017-06-13 | 2017-10-03 | 青岛海信宽带多媒体技术有限公司 | Temperature correction method, module to be measured and temperature calibration instrument |
| CN107228719B (en) * | 2017-06-13 | 2020-07-28 | 青岛海信宽带多媒体技术有限公司 | Temperature calibration method, module to be tested and temperature calibration device |
| CN109632143A (en) * | 2019-01-22 | 2019-04-16 | 中国计量科学研究院 | A kind of self calibration clinical thermometer |
| WO2022142237A1 (en) * | 2020-12-29 | 2022-07-07 | 华润微集成电路(无锡)有限公司 | Predictive-type electronic body temperature thermometer circuit structure implementing temperature compensation |
| US11976986B2 (en) | 2020-12-29 | 2024-05-07 | CRM ICBG (Wuxi) Co., Ltd. | Predictive electronic thermometer circuit structure capable of temperature compensation |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20130723 |