CN1181322C - Temp. metering device - Google Patents
Temp. metering device Download PDFInfo
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- CN1181322C CN1181322C CNB021527725A CN02152772A CN1181322C CN 1181322 C CN1181322 C CN 1181322C CN B021527725 A CNB021527725 A CN B021527725A CN 02152772 A CN02152772 A CN 02152772A CN 1181322 C CN1181322 C CN 1181322C
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- temperature
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Abstract
The present invention relates to a temperature measuring device, particularly to a cold junction end temperature measuring device of a non-contact temperature measuring element. The lower surface of a base seat is provided with a plurality of connection feet which have a conducting function, the upper surface of the base seat is provided with a temperature sense element of an object to be measured and a heat conduction extension block, an environment temperature sense element is fixedly arranged on the upper surface of the heat conduction extension block, wherein the summation of the heat capacity of the environmental temperature sense element adding the heat capacity of the heat conduction extension block is approximatively equal to the heat capacity of the temperature sense element of the object to be measured, so that when environmental temperature is suddenly changed, a heat balance constant of the environment temperature sense element is approximatively consistent with a heat balance constant of the cold junction end of the temperature sense element of the object to be measured, and the dynamic temperature difference of the environment temperature sense element and the cold junction end of the temperature sense element of the object to be measured is reduced. Therefore, the temperature measuring accuracy of the object to be measured is greatly raised, and the measuring sensibility can be effectively maintained.
Description
Technical field
The invention relates to a kind of temperature measuring device, refer to a kind of cold junction end temperature measuring device of contactless measuring temp element especially, not only can significantly promote the accuracy on the determinand measuring temp, also can effectively keep it and measure sensitivity.
Background technology
General temperature measuring device is generally to be divided into two kinds of contact temperature measuring equipment and contactless temperature measuring devices, wherein, contactless temperature measuring device has easily and fast, accurately, the characteristics of safety and hommization, therefore replace the contact temperature measuring equipment gradually and become main flow design on the measuring temp product, generally be applied to as ear thermometer, intelligent household appliances, take precautions against natural calamities, on antitheft, automatic equipment or the remote measurement product.
Contactless temperature measuring device commonly used, see also shown in Figure 1, it mainly is to be installed with four conductive connecting pins 19 in base 13 bottom sides with heat conduction and conduction effect, wherein there are three pins 19 to become the element pin 197 that forms the electrical isolation state with base 13 by an insulating blanket 193,199 of other pins can directly connect this base 13, and become the base pin 199 that electrically connects with base 13.Moreover, being installed with an infrared temperature sensing element 15 in the upper surface appropriate location of base 13, it can be by one first connecting line 151 and one second connecting line 153 and is electrically connected at corresponding two elements pin 197 individually.Again, the opposite side of base 13 upper surfaces is installed with a thermistor 17, the bottom side of this thermistor 17 can be via base 13 electrically connects with base pin 199, and its top side then is electrically connected at a pin top 195 that is raised in the element pin 197 of base 13 upper surfaces by one the 3rd connecting line 171.In addition; utilize the made cap of a metallics 11 to cover and protection infrared temperature sensing element 15 and thermistor 17; and cap 11 is provided with a filter window 115 with respect to (hot junction end) position, heat absorption district 155 of infrared temperature sensing element 15; cause heat absorption district 155 can be directly in the face of and absorb the heat radiation energy (radiation power) that comes from an extraneous object under test, and to be temperature sensor 15 deduct the scope in heat absorption districts 155 in zone shown in its cold junction end.Continue, the ambient temperature value Ta (with the cold junction end reference temperature value of operation infrared temperature sensing element 15) that cooperates thermistor 17 to be measured measured heat radiation energy again, and to be converted into the true temperature value Tb of object under test.
See also shown in Figure 2, though temperature measuring device commonly used can reach quick, convenience and purpose of safety, only, because the volume of this infrared temperature sensing element 15 and thermal capacity are much larger than thermistor 17, therefore when the environment temperature cataclysm, the dynamic temperature time curve 177 of thermistor 17 is steep compared to the dynamic temperature time curve 157 of infrared temperature sensing element 15, in other words, with rapid more than the real cold junction end heat balance time t2 of infrared temperature sensing element 15 itself as the thermistor heat balance time t1 of infrared temperature sensing element 15 cold junction end temperature reference value, and this kind is because the heat balance time difference that certainly exists between the two, not only will cause the accuracy on the object under test measuring temp to be queried, and also obviously reduce its measurement sensitivity.
For this reason, industry there's no one who doesn't or isn't drops into a large amount of research and development spirit and funds, in the hope of the cold junction end thermal equilibrium temperature curve of further thermistor and infrared temperature sensing element, and generally all be to be research direction to dwindle infrared temperature sensing element volume or to increase the thermistor volume.Only, if desire with the volume size of dwindling the infrared temperature sensing element then will to cause the significantly decay of its measuring temp signal, will form the obvious reduction of its measurement sensitivity relatively with as improving direction.Otherwise, then need to increase considerable thermistor material and cost and pay with as improving direction if desire with the volume size that increases thermistor.
Content of the present invention
Therefore, how at the shortcoming of above-mentioned temperature measuring device commonly used, provide a kind of novelty and effective improvement structure, with its accuracy of measurement of effective lifting and sensitivity, this is invention emphasis of the present invention.So
Fundamental purpose of the present invention, be to provide a kind of temperature measuring device, can effectively further the cold junction end and the thermistor temp profile of equilibrium of infrared temperature sensing element, and by this significantly to promote the measuring temp accuracy of object under test when environment temperature changes.
Secondary objective of the present invention, be to provide a kind of temperature measuring device, can not reduce infrared temperature sensing element volume or increase under the situation of thermistor volume, can effectively further thermal capacitance difference in size between infrared temperature sensing element and thermistor, and can keep sensitivity on its measuring temp by this.
Another purpose of the present invention is to provide a kind of temperature measuring device, can be under the situation of cost of manufacture increasing degree minimum, with effective lifting object under test measuring temp accuracy and sensitivity.
A kind of temperature measuring device of the present invention is characterized in that main structure includes:
One base, its bottom side is provided with a plurality of pins, and wherein has at least a pin to penetrate this base, causes its pin top to be raised in base upper surface;
One first temperature sensor is fixedly arranged on the upper surface of this base, and electrically connects with corresponding wherein two pins by one first connecting line and one second connecting line; And
One second temperature sensor is fixedly arranged on the pin top that this is raised in base upper surface, and electrically connects with this pin top, and electrically connects with a corresponding wherein pin by one the 3rd connecting line at least;
This first temperature sensor is to have the determinand temperature sensor that absorbs an External Heat Flux energy for one, and second temperature sensor is an environment temperature sensing element;
This pin that is raised in base upper surface links to each other with base, other pin all by insulating blanket with this base electrical isolation.
This first temperature sensor is to be an infrared temperature sensing element, and second temperature sensor then is an electronic type temperature sensor.
This first temperature sensor is to be a thermoelectric pile temperature sensor, and second temperature sensor then is a thermistor.
Still include one in order to cover the cap of this first temperature sensor and second temperature sensor at least.
This cap is made by a metallics, and is provided with one and allows the surface of this first temperature sensor absorb the filter window of an External Heat Flux energy.
A kind of temperature measuring device of the present invention is characterized in that main structure is to include:
One base, its bottom side is provided with a plurality of pins;
One determinand temperature sensor is fixedly arranged on the upper surface of this base, and electrically connects with corresponding wherein two pins by one first connecting line and one second connecting line;
One heat conduction extension block is fixedly arranged on the part upper surface of this base; And
One environment temperature sensing element is fixedly arranged on the upper surface of this heat conduction extension block, and electrically connects with a corresponding wherein pin by one the 3rd connecting line at least;
This environment temperature sensing element then passes through this heat conduction extension block and base and electrically connects with a corresponding base pin, and the 3rd connecting line is to be connected in corresponding another element pin;
Other pins all by an insulating blanket with this base electrical isolation.
The thermal capacitance of this environment temperature sensing element adds that the thermal capacitance of this heat conduction extension block is the thermal capacitance that is similar to this determinand temperature sensor.
This heat conduction extension block is to select by a conductor, nonconductor and knockdown one of them is made, and its upper surface is provided with a conductive layer, and this conductive layer electrically connects with a base pin by one the 4th connecting line and base.
This determinand temperature sensor is to be a heat radiation type temperature sensor, and the environment temperature sensing element then is an electronic type temperature sensor.
This determinand temperature sensor is to be a thermoelectric pile temperature sensor, and the environment temperature sensing element then is a thermistor.
Still comprise one in order to cover the cap of this determinand temperature sensor and environment temperature sensing element at least.
This cap is made by a metallics, and is provided with one and allows the part surface of this determinand temperature sensor absorb the filter window of an External Heat Flux energy.
A kind of temperature measuring device of the present invention is characterized in that main structure is to include:
One base, its bottom side is provided with a plurality of pins;
One determinand temperature sensor is fixedly arranged on the upper surface of this base, and electrically connects with corresponding wherein two pins by one first connecting line and one second connecting line; And
One environment temperature sensing element is fixedly arranged on the part upper surface of this determinand temperature sensor, and electrically connects with a corresponding wherein pin by one the 3rd connecting line at least;
The part surface of this determinand sensing element is provided with a conductive layer, and this conductive layer can electrically connect with a corresponding wherein pin by one the 4th connecting line, and this environment temperature sensing element promptly is fixedly arranged on this conductive layer;
Other pins all by an insulating blanket with this base electrical isolation;
This environment temperature sensing element then electrically connects with corresponding this base pin by this conductive layer, the 4th connecting line and base, and the 3rd connecting line is connected in corresponding another element pin.
This determinand temperature sensor is to be a heat radiation type temperature sensor, and the environment temperature sensing element then is an electronic type temperature sensor.
This determinand temperature sensor is a thermoelectric pile temperature sensor, and the environment temperature sensing element then is a thermistor.
Still include one in order to cover the cap of this determinand temperature sensor and environment temperature sensing element at least.
This cap is made by a metallics, and is provided with one and allows the part surface of this determinand temperature sensor absorb the filter window of an External Heat Flux energy.
Description of drawings
Fig. 1 is the decomposition structural map of temperature measuring device commonly used.
Fig. 2 is each component temperature response curve figure of usual means.
Fig. 3 is the decomposition structural map of temperature measuring device one preferred embodiment of the present invention.
Fig. 4 is each component temperature response curve figure of Fig. 3 embodiment.
Fig. 5 is the decomposition structural map of further embodiment of this invention.
Fig. 6 is each component temperature response curve figure of Fig. 5 embodiment.
Fig. 7 is the decomposition structural map of further embodiment of this invention.
Specific implementation
Further understand and understanding for making architectural feature of the present invention and the effect that realized had, with preferred embodiment figure and cooperate detailed explanation, illustrate as after:
At first, seeing also shown in Figure 3ly, is to decompose structural map for a preferred embodiment of temperature measuring device of the present invention; As shown in the figure, the present invention is installed with a plurality of conductive connecting pins 39 in base 33 bottom sides with heat conduction and conduction effect, four pins in the present embodiment for example, wherein there are three pins 39 to become the element pin 397 that forms the electrical isolation state with base 33 by an insulating blanket 393,399 of other pins can directly connect this base 33, and become the base pin 399 that electrically connects with base 33, and element pin 397 is convenient for follow-up routing program, therefore the pin top 395 of element pin 397 can be designed to be raised in the upper surface of base 33.
Again, be installed with one first temperature sensor 35 in the upper surface appropriate location of base 33, the determinand temperature sensor of present embodiment for example, may be selected to be a thermoelectric pile formula temperature sensor or burnt electric formula temperature sensor, it is by one first connecting line 351 and one second connecting line 353 and be electrically connected at corresponding two elements pin 397 individually.
Again, the upper surface opposite side of base 33 can be installed with one second temperature sensor, and for example the environment temperature sensing element of present embodiment may be selected to be a thermistor, thermopair, resistance-type temperature detector (Resistance Temperature Deactor; RTD) or solid-state device, it can directly set firmly pin top 395 upper surfaces of an element pin 397, and electrically connect with element pin 397, its top side then is fixed on this base 33 by one the 3rd connecting line 371, therefore can electrically connect with base pin 399 via base 33.
Again; utilize the made cap of a metallics 31 to cover and protection determinand temperature sensor 35 and environment temperature sensing element 37; and cap 31 is provided with a filter window 315 with respect to 355 positions, heat absorption district of determinand temperature sensor 35, cause heat absorption district 355 can be directly in the face of and absorb the hot heat radiation energy that comes from an extraneous object under test.Continue, the ambient temperature value Ta (with cold junction end reference temperature value) that cooperates environment temperature sensing element 37 to be measured measured heat radiation energy again as determinand temperature sensor 35, and to be converted into the true temperature value Tb of object under test).
Because, the cold junction end temperature value of determinand temperature sensor 35 is the measured temperature values with reference to environment temperature sensor 37, and when environment temperature changed, the thermal energy conduction path of environment temperature sensing element 37 and determinand temperature sensor 35 cold junction ends was to reach determinand temperature sensor 35 cold junction ends and environment temperature sensing element 37 for cap 31, base 33.In the present invention, because environment temperature sensing element 37 is directly to be installed on the pin top 395 that is raised in base 33 upper surfaces, and isolate by insulating blanket 393 and base 33, but not be fixedly arranged on the base 33 as device commonly used, therefore, heat conduction of the present invention to the conducting path of environment temperature sensing element 37 can prolong relatively, and the thermal conductance by insulating blanket 393 is isolated, the heat balance time point of also will further relatively 35 of itself and determinand temperature sensors.
Moreover, see also shown in Figure 4ly, be to be the present invention each component temperature response curve figure of embodiment as shown in Figure 3; From the thermotonus curve 377 of environment temperature sensing element 37, can find out obviously that its heat balance time point t3 prolongs compared to the heat balance time point t1 of Fig. 2 commonly used is obviously past, and approach the thermotonus curve 357 and the heat balance time point t2 thereof of determinand temperature sensor 35 cold junction ends.
Because, temperature measuring device of the present invention mainly is to utilize the pin top to come appropriateness further the heat balance time point t3 of environment temperature sensing element 37 and the heat balance time point t2 of determinand temperature sensor 35 cold junction ends, therefore, need offer the environment temperature sensing element 37 of determinand temperature sensor 35 cold junction end reference temperature value Ta, can because between the two heat balance time point near and the real cold junction end temperature value of actual response determinand temperature sensor 35 relatively, by this significantly to increase the accuracy of its measuring temp.Again, because the present invention does not reduce the volume of determinand temperature sensor 35 or the volume of increase environment temperature sensing element 37, therefore, but the sensitivity on holding temperature measures, the expenditure of also can effectively controlling cost.
In addition, seeing also shown in Figure 5ly, is the decomposition organigram for further embodiment of this invention; As shown in the figure, the difference of itself and the foregoing description is to utilize a upper surface to be provided with the heat conduction extension block 58 of a conductive layer 585, heat conduction extension block 58 is fixedly arranged on the appropriate location of base 33, and environment temperature sensing element 57 is fixed in again on the conductive layer 585 of heat conduction extension block 58, the top side of environment temperature sensing element 57 and an element pin 397 can be electrically connected by one the 3rd connecting line 571, again by one the 4th connecting line 573 can with the bottom side of environment temperature sensing element 57 via conductive layer 585 and base 33 and with 399 electric connections of base pin.
In this embodiment, heat conduction extension block 58 selectable material categorys are numerous, mainly be to select to arrange in pairs or groups environment temperature sensing element 57, the thermal capacitance that causes the thermal capacitance of heat conduction extension block 58 to be added to join environment temperature sensing element 57 can near or be equal to the thermal capacitance size of determinand temperature sensor 35, in other words, promptly be further once again the thermotonus curve 557 of determinand temperature sensor 35 cold junction ends and the thermotonus curve 577 of environment temperature sensing element 57, as shown in Figure 6.
As the thermotonus curve 557 that can obviously find out determinand temperature sensor 35 cold junction ends among the figure and the thermotonus curve 577 of environment temperature sensing element 57 has been quite identical basically, and the heat balance time point t4 of the environment temperature sensing element 57 also heat balance time point t2 with determinand temperature sensor 35 cold junction ends is identical.Therefore, the temperature reference value that can rationally reason out environment temperature sensing element 57 can be represented the true temperature of determinand temperature sensor 35 cold junction ends basically, also just can effectively promote the accuracy on its measuring temp relatively.
Certainly, in this embodiment, be that hypothesis heat conduction extension block 58 selected materials are non-good conductive body, therefore, the just surperficial thereon conductive layer 585 that is provided with tool conduction effect.Otherwise in another embodiment, if heat conduction extension block 58 is to select the favorable conductive body, then environment temperature sensing element 57 also can be given up the 4th connecting line 573, and directly by heat conduction extension block 58 and base 33 and with 399 electric connections of base pin.
In addition, in the above-described embodiments, also be that hypothesis base 33 is to be a favorable conductive body, so just base pin 399 directly is electrically connected on this base 33.Otherwise, in another embodiment, also can directly base 33 be designed to a non-good conductive body, therefore, all pins 39 all can be designed to be raised in the upper surface of base 33, utilize each connecting line that element and corresponding pin 39 are electrically connected again.Again, even base 33 is to be a favorable conductive body, each pin 39 also can be raised in base 33 upper surfaces, just needs each insulating blanket 393 and the design of base 33 electrical isolation.
At last, seeing also shown in Figure 7ly, is the decomposition structural map for further embodiment of this invention; As shown in the figure, the difference of itself and the foregoing description promptly is environment temperature sensing element 77 directly is fixedly arranged on the part surface appropriate location of determinand temperature sensor 35, certainly can there be a conductive layer 785 between, the top side and the element pin 397 of environment temperature sensing element 77 can be electrically connected by one the 3rd connecting line 771, the bottom side of environment temperature sensing element 77 then electrically connects with base pin 399 by conductive layer 785, the 4th connecting line 773 and base 33.Because, it is many rapidly that the temperature balance speed of independent environment temperature sensing element 77 is held weighing apparatus speed level with both hands compared to the cold junction of independent determinand temperature sensor 35, therefore, the design that directly environment temperature sensing element 77 is placed in determinand temperature sensor 35 upper surfaces can be considered the thermal capacitance thing that the two is combined into a monomer, both can arrive thermal equilibrium state simultaneously for it, and its experimental result is also supported this kind design, its each element response curve figure can reach the raising accuracy also as shown in Figure 6 equally, the purpose and the effect that keep sensitivity and control cost of manufacture.
In sum, the invention relates to a kind of temperature measuring device, refer to a kind of cold junction end temperature measuring device of contactless measuring element especially, not only can significantly promote the accuracy on the object under test measuring temp, also can effectively keep it and measure sensitivity.So the present invention one has novelty, progressive and can supply the industry utilization, the patented claim important document that should meet China's Patent Law defined proposes application for a patent for invention undoubtedly in accordance with the law.
Only the above, it only is a preferred embodiment of the present invention, be not to be used for limiting scope of the invention process, the equalization of doing according to the described shape of the present patent application claim, structure, feature and spirit changes and modifies in every case, all should be included in the claim of the present invention.
Claims (17)
1, a kind of temperature measuring device is characterized in that main structure includes:
One base, its bottom side is provided with a plurality of pins, and wherein has at least a pin to penetrate this base, causes its pin top to be raised in base upper surface;
One first temperature sensor is fixedly arranged on the upper surface of this base, and electrically connects with corresponding wherein two pins by one first connecting line and one second connecting line; And
One second temperature sensor is fixedly arranged on the pin top that this is raised in base upper surface, and electrically connects with this pin top, and electrically connects with a corresponding wherein pin by one the 3rd connecting line at least;
This first temperature sensor is to have the determinand temperature sensor that absorbs an External Heat Flux energy for one, and second temperature sensor is an environment temperature sensing element;
This pin that is raised in base upper surface links to each other with base, other pin all by insulating blanket with this base electrical isolation.
2, temperature measuring device as claimed in claim 1 is characterized in that: this first temperature sensor is to be an infrared temperature sensing element, and second temperature sensor then is an electronic type temperature sensor.
3, temperature measuring device as claimed in claim 1 is characterized in that: this first temperature sensor is to be a thermoelectric pile temperature sensor, and second temperature sensor then is a thermistor.
4, temperature measuring device as claimed in claim 1 is characterized in that: still include one in order to cover the cap of this first temperature sensor and second temperature sensor at least.
5, temperature measuring device as claimed in claim 4 is characterized in that: this cap is made by a metallics, and is provided with one and allows the surface of this first temperature sensor absorb the filter window of an External Heat Flux energy.
6, a kind of temperature measuring device is characterized in that main structure is to include:
One base, its bottom side is provided with a plurality of pins;
One determinand temperature sensor is fixedly arranged on the upper surface of this base, and electrically connects with corresponding wherein two pins by one first connecting line and one second connecting line;
One heat conduction extension block is fixedly arranged on the part upper surface of this base; And
One environment temperature sensing element is fixedly arranged on the upper surface of this heat conduction extension block, and electrically connects with a corresponding wherein pin by one the 3rd connecting line at least;
This environment temperature sensing element then passes through this heat conduction extension block and base and electrically connects with a corresponding base pin, and the 3rd connecting line is to be connected in corresponding another element pin;
Other pins all by an insulating blanket with this base electrical isolation.
7, temperature measuring device as claimed in claim 6 is characterized in that: the thermal capacitance of this environment temperature sensing element adds that the thermal capacitance of this heat conduction extension block is the thermal capacitance that is similar to this determinand temperature sensor.
8, temperature measuring device as claimed in claim 7, it is characterized in that: this heat conduction extension block is to select by a conductor, nonconductor and knockdown one of them is made, and its upper surface is provided with a conductive layer, and this conductive layer electrically connects with a base pin by one the 4th connecting line and base.
9, temperature measuring device as claimed in claim 6 is characterized in that: this determinand temperature sensor is to be a heat radiation type temperature sensor, and the environment temperature sensing element then is an electronic type temperature sensor.
10, temperature measuring device as claimed in claim 6 is characterized in that: this determinand temperature sensor is to be a thermoelectric pile temperature sensor, and the environment temperature sensing element then is a thermistor.
11, temperature measuring device as claimed in claim 6 is characterized in that: still comprise one in order to cover the cap of this determinand temperature sensor and environment temperature sensing element at least.
12, temperature measuring device as claimed in claim 11 is characterized in that: this cap is made by a metallics, and is provided with one and allows the part surface of this determinand temperature sensor absorb the filter window of an External Heat Flux energy.
13, a kind of temperature measuring device is characterized in that main structure is to include:
One base, its bottom side is provided with a plurality of pins;
One determinand temperature sensor is fixedly arranged on the upper surface of this base, and electrically connects with corresponding wherein two pins by one first connecting line and one second connecting line; And
One environment temperature sensing element is fixedly arranged on the part upper surface of this determinand temperature sensor, and electrically connects with a corresponding wherein pin by one the 3rd connecting line at least;
The part surface of this determinand sensing element is provided with a conductive layer, and this conductive layer can electrically connect with a corresponding wherein pin by one the 4th connecting line, and this environment temperature sensing element promptly is fixedly arranged on this conductive layer;
Other pins all by an insulating blanket with this base electrical isolation;
This environment temperature sensing element then electrically connects with corresponding this base pin by this conductive layer, the 4th connecting line and base, and the 3rd connecting line is connected in corresponding another element pin.
14, temperature measuring device as claimed in claim 13 is characterized in that: this determinand temperature sensor is to be a heat radiation type temperature sensor, and the environment temperature sensing element then is an electronic type temperature sensor.
15, temperature measuring device as claimed in claim 13 is characterized in that: this determinand temperature sensor is a thermoelectric pile temperature sensor, and the environment temperature sensing element then is a thermistor.
16, temperature measuring device as claimed in claim 13 is characterized in that: still include one in order to cover the cap of this determinand temperature sensor and environment temperature sensing element at least.
17, temperature measuring device as claimed in claim 16 is characterized in that: this cap is made by a metallics, and is provided with one and allows the part surface of this determinand temperature sensor absorb the filter window of an External Heat Flux energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021527725A CN1181322C (en) | 2002-11-27 | 2002-11-27 | Temp. metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021527725A CN1181322C (en) | 2002-11-27 | 2002-11-27 | Temp. metering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1419110A CN1419110A (en) | 2003-05-21 |
| CN1181322C true CN1181322C (en) | 2004-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021527725A Expired - Lifetime CN1181322C (en) | 2002-11-27 | 2002-11-27 | Temp. metering device |
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| CN (1) | CN1181322C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013212066A1 (en) * | 2013-06-25 | 2015-01-08 | Robert Bosch Gmbh | Module for integration into a mobile terminal for measuring the ambient temperature |
| DE102013226695A1 (en) * | 2013-12-19 | 2015-06-25 | Robert Bosch Gmbh | Method for determining the ambient temperature of a mobile device |
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2002
- 2002-11-27 CN CNB021527725A patent/CN1181322C/en not_active Expired - Lifetime
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