CN104458048B - A kind of temperature checking method, device, circuit and a kind of electronic equipment - Google Patents
A kind of temperature checking method, device, circuit and a kind of electronic equipment Download PDFInfo
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- CN104458048B CN104458048B CN201310451102.0A CN201310451102A CN104458048B CN 104458048 B CN104458048 B CN 104458048B CN 201310451102 A CN201310451102 A CN 201310451102A CN 104458048 B CN104458048 B CN 104458048B
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Abstract
The present invention provides a kind of temperature checking methods, are applied to the first electronic equipment, wherein the first electronic equipment is matched with the second electronic equipment, which includes：First device, first switch and thermistor, specifically, first switch is connected in series with thermistor, and the branch circuit parallel connection where with the first device.Temperature checking method provided by the invention includes：Obtain the first resistance value of the second electronic equipment when first switch is off, the second resistance value of first switch the second electronic equipment in the closure state is obtained again, according to the first resistance value and the second resistance value, determine the current resistance value of thermistor, according to the correspondence of the resistance value of thermistor and temperature, the corresponding Current Temperatures of resistance value of current thermistor are obtained, solve the problems, such as that mobile electronic device does not have environment temperature detection function in the prior art.
Description
Technical field
The present invention relates to the communications field, more specifically, it relates to a kind of temperature checking method, device,
Circuit and a kind of electronic equipment.
Background technology
Currently, the type of mobile electronic device and application are in diversified development trend, e.g., computer is from thick and heavy
Laptop is to ultra-thin notebook, then arrives " super basis ".For another example, mobile phone is intelligent from " taking transmitting-receiving " function on basis to straight panel
Machine, then arrive the touch screen intelligent machine comprising various applications.
Except this, with the fast development of mobile communication technology, the mobile electronic device with phonetic function is more and more
Consumer use, at the same time, earphone also becomes one of essential communication accessory in routine work life.
Specifically, under the promoting of consumer demand, the application type of smart mobile phone is more and more, such as：Digital map navigation, U.S.
Eat food and drink, weather forecast etc..But inventor has found, in the application of current mobile phone, does not answer what environment temperature was detected
With, and temperature detection is the common function of consumer.
Invention content
In view of this, the present invention provides a kind of temperature checking method, to overcome, mobile electronic device is not in the prior art
Has the problem of environment temperature detection function.
To achieve the above object, the present invention provides the following technical solutions：
A kind of temperature checking method, is applied to the first electronic equipment, and first electronic equipment is matched with the second electronic equipment
Set uses, wherein second electronic equipment includes：First device, first switch and thermistor, the first switch with
The thermistor is connected in series with, and the branch circuit parallel connection where with first device, the temperature checking method include：
First resistance value of the second electronic equipment described in obtaining when the first switch is off；
Obtain the second resistance value of the first switch second electronic equipment in the closure state；
According to the first resistance value and the second resistance value, the current resistance value of the thermistor is calculated；
According to the correspondence of the resistance value of the thermistor and temperature, the current resistance value pair with the thermistor is obtained
The Current Temperatures answered.
Preferably, the first resistance value packet of the second electronic equipment described in when the acquisition first switch is off
It includes：
It accesses the instruction of first electronic equipment receiving second electronic equipment and detects that described first opens
When shutdown is opened, the ADC module in first electronic equipment detects the first resistor value of presently described second electronic equipment, described
First resistor value is the resistance value of branch where first device.
Preferably, the second resistance value packet for obtaining the first switch second electronic equipment in the closure state
It includes：
It accesses the instruction of first electronic equipment receiving second electronic equipment and detects that described first opens
When closing conjunction, the ADC module in first electronic equipment detects the second resistance value of presently described second electronic equipment, described
Second resistance value is total resistance value of the thermistor in parallel with first device and branch resistance where first device.
Preferably, described according to the first resistance value and the second resistance value, determine that the current resistance value of the thermistor includes：
The resistance value of the thermistor is obtained according to computing the resistor value formula in parallel.
Preferably, second electronic equipment is the earphone with Mike, and first device is the Mike of the earphone,
The first switch is hook key, correspondingly, the second electronics described in when the acquisition first switch is off is set
The first standby resistance value includes：
It is inserted into the instruction of first electronic equipment and when detecting that the hook key is not pressed receiving the earphone,
ADC module in first electronic equipment detects the first resistor value of Mike's branch of presently described earphone.
Preferably, the second resistance value packet for obtaining the first switch second electronic equipment in the closure state
It includes：
The instruction of first electronic equipment is accessed receiving the earphone and when detecting that the hook key is pressed, institute
State the second resistance value that the ADC module in the first electronic equipment detects presently described earphone, the second resistance value be with it is described
Total resistance value of the thermistor of Mike's parallel connection and branch resistance where the Mike.
A kind of temperature-detecting device, including：
First acquisition module, first for the second electronic equipment described in obtaining when the first switch is off
Resistance value；
Second acquisition module, for obtain the first switch in the closure state second electronic equipment second
Resistance value；
Computing module, for according to the first resistance value and the second resistance value, determining the current resistance value of the thermistor；
Third acquisition module, for according to the resistance value of the thermistor and the correspondence of temperature, obtaining and the heat
The corresponding Current Temperatures of current resistance value of quick resistance.
A kind of temperature sensing circuit, using the second electronic equipment, including：First device, thermistor and first switch,
The first switch is connected with the thermistor, and the branch after series connection and branch circuit parallel connection where first device.
A kind of electronic equipment, including above-mentioned temperature sensing circuit.
Preferably, the electronic equipment is the earphone with Mike.
Preferably, the intersection in the circuit of the left speaker and right loud speaker of the earphone is arranged in the thermistor.
It can be seen via above technical scheme that compared with prior art, the present invention provides a kind of temperature checking methods, answer
For the first electronic equipment, wherein the first electronic equipment is matched with the second electronic equipment, which includes：
First device, first switch and thermistor, specifically, first switch is connected in series with thermistor, and with the first device
The branch circuit parallel connection at place.Temperature checking method provided by the invention includes：Obtain the second electricity when first switch is off
First resistance value of sub- equipment, then the second resistance value of first switch the second electronic equipment in the closure state is obtained, according to first
Resistance value and the second resistance value determine the current resistance value of thermistor, according to the correspondence of the resistance value of thermistor and temperature,
The corresponding Current Temperatures of resistance value of current thermistor are obtained, mobile electronic device in the prior art is solved and does not have environment temperature
The problem of spending detection function.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow diagram of temperature checking method provided in an embodiment of the present invention；
Fig. 2 is the first electronic equipment provided in an embodiment of the present invention and the second electronic equipment connection relationship diagram；
Fig. 3 is another second electronic equipment connection relationship diagram provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram that the second electronic equipment is the earphone with Mike；
Fig. 5 is a kind of structural scheme of mechanism of temperature-detecting device provided in an embodiment of the present invention；
Fig. 6 is installation site figure of the thermistor provided in an embodiment of the present invention on earphone.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Attached drawing 1 is please referred to, is a kind of flow diagram of temperature checking method provided in an embodiment of the present invention, this method is answered
For the first electronic equipment, which matches with the second electronic equipment, wherein the second electronic equipment includes：
First device, first switch and thermistor, above-mentioned first switch are connected in series with above-mentioned thermistor, and with above-mentioned first
Branch circuit parallel connection where device.Above-mentioned temperature checking method includes：
Step S101：First resistance value of the second electronic equipment described in obtaining when the first switch is off.
Step S102：Obtain the second resistance value of the first switch second electronic equipment in the closure state；
Temperature checking method provided in this embodiment is to be based on and matching used first electronic equipment of the second electronic equipment
Detection method, specifically, the matching figure of the first electronic equipment and the second electronic equipment is as shown in Figure 2, wherein the second electronics is set
Standby includes the first device 1021, first switch 1022 and thermistor 1023.
When the second electronic equipment 102 is connect with the first electronic equipment 101, opened by the second electronic equipment of test first
Pass 1022 is switched on and off state to acquire the resistance value of current second electronic equipment.In the present embodiment, above-mentioned the is defined
When one switch is off, the current resistance value of the second electronic equipment detected is the first resistance value.Above-mentioned first is defined to open
It closes in the closure state, the current resistance value of the second electronic equipment detected is the second resistance value.Certainly, above-mentioned resistance value is determined
Right way of conduct formula is intended merely to illustrate, it is not limited to this, the state of first switch can be exchanged, corresponding first resistor value with
And second resistance value, that is, define first switch in the closure state, the current resistance value of the second electronic equipment detected is the
One resistance value；When first switch is off, the current resistance value of the second electronic equipment detected is the second resistance value.Also may be used
With by other definition modes, this will not be detailed here.
The present embodiment does not limit the sequencing of above-mentioned steps S101 and step S102, you can be to first carry out step
Step S102 is executed after S101, or executes step S101 after first carrying out step S102.
Preferably, the first electronic equipment 101 can be that tablet computer, mobile phone etc. be hand-held or non-hand-held electronic equipment, this
When the second electronic equipment can be individual detection device, or carry Mike earphone.
If the second electronic equipment is the earphone with Mike, at this point, first switch can be physical switch, such as
Hook key, the first device can be the Mike of earphone.Second electronic equipment i.e. provided in this embodiment（Earphone）For in existing skill
In art on the earphone with Mike, the branch where hook key is in series with a thermistor, and by the thermistor and hook key
The branch and the branch circuit parallel connection where Mike at place.
When the second electronic equipment accesses the first electronic equipment, the first electronic equipment starts to detect the state of first switch,
When detecting that first switch disconnects, the ADC module in the first electronic equipment detects the first resistor of current second electronic equipment
Value.In conjunction with the connection relation of above-mentioned device, it is not difficult to learn, since first switch disconnects, first switch and thermistor institute at this time
Branch disconnect, i.e., first resistor value be the first device where branch resistance value.
Correspondingly, after the instruction that the first electronic equipment receives the access of the second electronic equipment, when detecting first switch
When closure, the ADC module in the first electronic equipment detects the second resistance value of current second electronic equipment.At this point, second resistance
Value is total resistance value of branch resistance where the thermistor in parallel with the first device and the first device.
It should be noted that the first electronic equipment can constantly detect the state of first switch in the second electronic equipment, when
When the state of one switch is overturn, the resistance value of the second electronic equipment is detected again.But constantly detection can lead to the damage of electric energy
The action of physical button may be used to control the state of first switch being switched on and off because in the present embodiment in consumption.
Using the second electronic equipment as earphone for example, when hook key is not pressed, where hook key and thermistor
Branch disconnects, at this point, branch only where Mike accesses the first electronic equipment, i.e., at this time the first electronic equipment detect the
The access resistance value of two electronic equipments is the resistance value of branch where Mike, referred to as first resistor value.
When hook key is pressed, the branch where hook key and thermistor accesses circuit, i.e., branch where Mike and
Branch where hook key accesses the first electronic equipment.The of ADC module detection current earphone in first electronic equipment at this time
Two resistance values, the second resistance value are total resistance value of the thermistor in parallel with Mike and branch resistance where Mike.
It is noted herein that the first electronic equipment detects the resistance value of the second electronic equipment, particularly the first electronics
ADC module in equipment is detected.Under normal conditions, tablet computer, the equipment such as mobile phone all have ADC module, therefore are not required to pair
First electronic equipment is improved.Certainly it is also not excluded for an other electronic equipment and does not have ADC module, at this point, if the electronics
Equipment needs to increase temperature detecting function, need to increase ADC module in current first electronic equipment.
It is described above when the second electronic equipment is the earphone with Mike, the realization of step S101 and S102
Journey.It now introduces when the second electronic equipment is individual detection device, the workflow of step S101 and S102 are as follows：
Referring to Fig. 3, when second electronic equipment 202 includes first switch 2021 and thermistor 2022, the
When two electronic equipments access the first electronic equipment, the first electronic equipment starts to detect the state of first switch, when detecting first
When switch disconnects, the ADC module in the first electronic equipment detects the first resistor value of current second electronic equipment.It opens due to first
Shutdown is opened, and first switch and the branch where thermistor disconnect at this time, i.e., first resistor value is the circuit of the second electronic equipment
Parasitic resistance value.
Correspondingly, after the instruction that the first electronic equipment receives the access of the second electronic equipment, when detecting first switch
When closure, the ADC module in the first electronic equipment detects the second resistance value of current second electronic equipment.At this point, second resistance
Value is the resistance value of thermistor.
Step S103：According to the first resistance value and the second resistance value, the current resistance value of the thermistor is calculated.
In conjunction with the composition and connection relation of the second electronic equipment in Fig. 2, it is known that, the second resistance value is the first device and heat
Total resistance value after quick resistor coupled in parallel obtains current temperature-sensitive electricity according to resistor coupled in parallel computing the resistor value formula RX=R1*R2/ (R1-R2)
The resistance value of resistance.
When the second electronic equipment is equipment shown in Fig. 3, since first switch and thermistor are same branch, then
The resistance value that thermistor can be obtained is equal to the difference that second resistance value subtracts first resistor value.
Above-described embodiment setting first switch purpose be accurately to measure the current resistance value of thermistor, theoretically,
Do not consider dead resistance, the second electronic equipment provided in this embodiment can also only be thermistor, when thermistor passes through object
When reason interface is connected with the first electronic equipment, the ADC module in the first electronic equipment detects the resistance value of current thermistor.
Specifically, when the second electronic equipment is the earphone with Mike, as shown in figure 4, corresponding, first switch is
Hook key, the first device are Mike.Corresponding when electronic equipment is individual device, first switch can be hook key,
It can be simple mechanical switch.Can be plug+thermistor of earphone when the second electronic equipment only includes thermistor
Structure, or by the improvement to the first electronic equipment hardware, the second electronic equipment is made to be connected thereto use accordingly
Structure.
Step S104：According to the correspondence of the resistance value of the thermistor and temperature, obtain and the thermistor
The corresponding Current Temperatures of current resistance value.
As its name suggests, thermistor is one kind of sensing element, is divided into positive temperature coefficient temperature-sensitive according to temperature coefficient difference
Resistor（PTC）And negative temperature coefficient thermistor（NTC）.The typical feature of thermistor be it is temperature sensitive, it is different
At a temperature of show different resistance values.Positive temperature coefficient thermistor（PTC）When temperature is higher, resistance value is bigger, subzero temperature
Spend coefficient thermal resistor（NTC）When temperature is higher, resistance value is lower.
In the present embodiment, the type of thermistor is not limited.Be thermistor it is negative temperature system in conjunction with table 1
Number thermal resistor（NTC）The resistance value temperature table of comparisons, table look-up the corresponding Current Temperatures of current resistance value for obtaining thermistor.
Table 1
| T(℃)R(KΩ) | T(℃)R(KΩ) | T(℃)R(KΩ) |
| -20.095.3370 | 20.512.2138 | 61.02.3820 |
| -19.592.6559 | 21.011.9425 | 61.52.3394 |
| -19.090.0580 | 21.511.6778 | 62.02.2977 |
| -18.587.5406 | 22.011.4198 | 62.52.2568 |
| -18.085.1009 | 22.511.1681 | 63.02.2167 |
| -17.582.7364 | 23.010.9227 | 63.52.1775 |
| -17.080.4445 | 23.510.6834 | 64.02.1390 |
| -16.578.2227 | 24.010.4499 | 64.52.1013 |
| -16.076.0689 | 24.510.2222 | 65.02.0644 |
| -15.573.9806 | 25.010.0000 | 65.52.0282 |
| -15.071.9558 | 25.59.7833 | 66.01.9928 |
| -14.569.9923 | 26.09.5718 | 66.51.9580 |
| -14.068.0881 | 26.59.3655 | 67.01.9240 |
| -13.566.2412 | 27.09.1642 | 67.51.8906 |
| -13.064.4499 | 27.58.9677 | 68.01.8579 |
| -12.562.7122 | 28.08.7760 | 68.51.8258 |
| -12.061.0264 | 28.58.5889 | 69.01.7944 |
| -11.559.3908 | 29.08.4063 | 69.51.7636 |
| -11.057.8038 | 29.58.2281 | 70.01.7334 |
| -10.556.2639 | 30.08.0541 | 70.51.7037 |
| -10.054.7694 | 30.57.8842 | 71.01.6747 |
| -9.553.3189 | 31.07.7184 | 71.51.6462 |
| -9.051.9111 | 31.57.5565 | 72.01.6183 |
| -8.550.5445 | 32.07.3985 | 72.51.5910 |
| -8.049.2178 | 32.57.2442 | 73.01.5641 |
| -7.547.9298 | 33.07.0935 | 73.51.5378 |
| -7.046.6792 | 33.56.9463 | 74.01.5120 |
| -6.545.4649 | 34.06.8026 | 74.51.4867 |
| -6.044.2856 | 34.56.6622 | 75.01.4619 |
| -5.543.1403 | 35.06.5251 | 75.51.4375 |
| -5.042.0279 | 35.56.3912 | 76.01.4136 |
| -4.540.9474 | 36.06.2604 | 76.51.3902 |
| -4.039.8978 | 36.56.1326 | 77.01.3672 |
| -3.538.8780 | 37.06.0077 | 77.51.3447 |
| -3.037.8873 | 37.55.8858 | 78.01.3225 |
| -2.536.9246 | 38.05.7666 | 78.51.3008 |
| -2.035.9892 | 38.55.6501 | 79.01.2795 |
| -1.535.0801 | 39.05.5363 | 79.51.2586 |
| -1.034.1965 | 39.55.4251 | 80.01.2381 |
| -0.533.3378 | 40.05.3164 | 80.51.2180 |
| 0.032.5030 | 40.55.2102 | 81.01.1983 |
| 0.531.6915 | 41.05.1064 | 81.51.1789 |
| 1.030.9026 | 41.55.0049 | 82.01.1599 |
| 1.530.1355 | 42.04.9057 | 82.51.1412 |
| 2.029.3896 | 42.54.8088 | 83.01.1229 |
| 2.528.6644 | 43.04.7140 | 83.51.1050 |
| 3.027.9590 | 43.54.6213 | 84.01.0873 |
| 3.527.2730 | 44.04.5307 | 84.51.0700 |
| 4.026.6058 | 44.54.4421 | 85.01.0530 |
| 4.525.9567 | 45.04.3554 | 85.51.0363 |
| 5.025.3254 | 45.54.2707 | 86.01.0199 |
| 5.524.7111 | 46.04.1878 | 86.51.0038 |
| 6.024.1135 | 46.54.1068 | 87.00.9880 |
| 6.523.5320 | 47.04.0275 | 87.50.9725 |
| 7.022.9661 | 47.53.9500 | 88.00.9573 |
| 7.522.4154 | 48.03.8742 | 88.50.9424 |
| 8.021.8795 | 48.53.8000 | 89.00.9277 |
| 8.521.3579 | 49.03.7275 | 89.50.9133 |
| 9.020.8502 | 49.53.6565 | 90.00.8991 |
| 9.520.3559 | 50.03.5870 | 90.50.8852 |
| 10.019.8747 | 50.53.5190 | 91.00.8715 |
| 10.519.4063 | 51.03.4525 | 91.50.8581 |
| 11.018.9502 | 51.53.3875 | 92.00.8450 |
| 11.518.5060 | 52.03.3238 | 92.50.8320 |
| 12.018.0735 | 52.53.2615 | 93.00.8193 |
| 12.517.6523 | 53.03.2005 | 93.50.8068 |
| 13.017.2421 | 53.53.1408 | 94.00.7945 |
| 13.516.8426 | 54.03.0824 | 94.50.7825 |
| 14.016.4534 | 54.53.0252 | 95.00.7707 |
| 14.516.0743 | 55.02.9692 | 95.50.7590 |
| 15.015.7049 | 55.52.9144 | 96.00.7476 |
| 15.515.3450 | 56.02.8608 | 96.50.7364 |
| 16.014.9944 | 56.52.8082 | 97.00.7253 |
| 16.514.6528 | 57.02.7568 | 97.50.7145 |
| 17.014.3198 | 57.52.7065 | 98.00.7038 |
| 17.513.9954 | 58.02.6572 | 98.50.6933 |
| 18.013.6792 | 58.52.6089 | 99.00.6831 |
| 18.513.3710 | 59.02.5616 | 99.50.6729 |
| 19.013.0705 | 59.52.5153 | 100.00.6630 |
| 19.512.7777 | 60.02.4700 | |
| 20.012.4922 | 60.52.4255 |
Certainly, when thermistor is positive temperature coefficient thermistor（PTC）When, operation principle is similar.It does not do herein in detail
It is thin to introduce.It should be noted that the first switch in the present embodiment may be the circuit for having switching function, but in view of at
It is the problem of this and circuit volume, preferred in the present embodiment or use mechanical key.
Except this, the Standard resistance range for selecting thermistor can be determined according to the resistance value of the first device, it is band to take the second equipment
For having the earphone of Mike, it is contemplated that the impedance of Mike is that generally 5k~14.8K compares the heat of recommendation in order to which precision is considered
Quick resistance is 1K.Because thermistor is in parallel with Mike, the resistance value selection of thermistor is smaller, then total resistance value after parallel connection is also got over
Small, i.e. the resistance value that the second equipment accesses the first equipment is smaller and then energy saving.
Method is described in detail in the embodiment that aforementioned present invention provides, diversified forms can be used for the method for the present invention
Device realize that therefore the present invention also provides a kind of devices, and specific embodiment is given below and is described in detail.
Referring to Fig. 5, the temperature-detecting device is applied to above-mentioned first electronic equipment, including：
First acquisition module 501, for the second electronic equipment described in obtaining when the first switch is off
First resistance value.
Second acquisition module 502, for obtaining the first switch second electronic equipment in the closure state
Second resistance value.
That is the first acquisition module and the second acquisition module are by testing the unlatching of first switch and pass in the second electronic equipment
Disconnected state acquires the resistance value of current second electronic equipment.In the present embodiment, it defines above-mentioned first switch and is in disconnection shape
When state, the current resistance value of the second electronic equipment detected is the first resistance value.Define above-mentioned first switch in the closure state,
The current resistance value of the second electronic equipment detected is the second resistance value.Certainly, the definition mode of above-mentioned resistance value is intended merely to have
Body explanation, it is not limited to this, the state of first switch can be exchanged, corresponding first resistor value and second resistance value, i.e.,
Define first switch in the closure state, the current resistance value of the second electronic equipment detected is the first resistance value；It opens when first
When pass is off, the current resistance value of the second electronic equipment detected is the second resistance value.It can also be fixed by others
Right way of conduct formula, this will not be detailed here.
Preferably, the first electronic equipment 101 can be that tablet computer, mobile phone etc. be hand-held or non-hand-held electronic equipment.
When the second electronic equipment accesses the first electronic equipment, the first electronic equipment starts to detect the state of first switch,
When detecting that first switch disconnects, the ADC module in the first electronic equipment detects the first resistor of current second electronic equipment
Value.In conjunction with the connection relation of above-mentioned device, it is not difficult to learn, since first switch disconnects, first switch and thermistor institute at this time
Branch disconnect, i.e., first resistor value be the first device where branch resistance value.
Correspondingly, after the instruction that the first electronic equipment receives the access of the second electronic equipment, when detecting first switch
When closure, the ADC module in the first electronic equipment detects the second resistance value of current second electronic equipment.At this point, second resistance
Value is total resistance value of branch resistance where the thermistor in parallel with the first device and the first device.
It is noted herein that the first electronic equipment detects the resistance value of the second electronic equipment, particularly the first electronics
ADC module in equipment is detected.Under normal conditions, tablet computer, the equipment such as mobile phone all have ADC module, therefore are not required to pair
First electronic equipment is improved.Certainly it is also not excluded for an other electronic equipment and does not have ADC module, at this point, if the electronics
Equipment needs to increase temperature detecting function, need to increase ADC module in current first electronic equipment.
Computing module 503, for according to the first resistance value and the second resistance value, determining the current resistance of the thermistor
Value.
In conjunction with above-mentioned temperature checking method, it is known that, the meter of computing module 503 different according to the composition of the second electronic equipment
Calculation mode does not have to accordingly yet, and when the second electronic equipment is the earphone with Mike, first resistor value is branch where Mike
Resistance value.Second resistance value is total resistance value after thermistor is in parallel with Mike.According to resistor coupled in parallel computing the resistor value formula RX=R1*
R2/ (R1-R2), obtains the resistance value of current thermistor.When the second electronic equipment is equipment shown in Fig. 3, open due to first
It closes and thermistor is same branch, then the resistance value that thermistor can be obtained subtracts first resistor value equal to second resistance value
Difference.
Third acquisition module 504, for according to the resistance value of the thermistor and the correspondence of temperature, obtain with it is described
The corresponding Current Temperatures of current resistance value of thermistor.I.e. the third acquisition module obtains the current resistance value of thermistor by tabling look-up
Corresponding temperature value.
Except this, the present embodiment additionally provides a kind of electronic equipment, i.e., the second above-mentioned electronic equipment, when the second electronic equipment
For earphone with Mike when, it is preferred that thermistor is arranged in the left speaker of earphone and crossing for the circuit of right loud speaker
Place, as shown in fig. 6, a points in figure.When can reduce hand touch switch in this way, the interference caused by environment temperature, and it is more beautiful.
In summary：The present invention provides a kind of temperature checking methods, are applied to the first electronic equipment, wherein the first electricity
Sub- equipment is matched with the second electronic equipment, which includes：First device, first switch and temperature-sensitive electricity
Resistance, specifically, first switch is connected in series with thermistor, and the branch circuit parallel connection where with the first device.It is provided by the invention
Temperature checking method includes：The first resistance value of the second electronic equipment when first switch is off is obtained, then obtains first
The second resistance value for switching the second electronic equipment in the closure state determines temperature-sensitive according to the first resistance value and the second resistance value
The current resistance value of resistance, according to the correspondence of the resistance value of thermistor and temperature, the resistance value for obtaining current thermistor corresponds to
Current Temperatures, solve the problems, such as that mobile electronic device does not have environment temperature detection function in the prior art.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.The device provided for embodiment
For, since it is corresponding with the method that embodiment provides, so description is fairly simple, related place is said referring to method part
It is bright.
Above description to the embodiment provided, enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principle provided in this article and features of novelty phase one
The widest range caused.
Claims (11)
1. a kind of temperature checking method is applied to the first electronic equipment, which is characterized in that first electronic equipment and the second electricity
Sub- coordinative composition of equipments uses, wherein second electronic equipment includes：First device, first switch and thermistor, described
Branch circuit parallel connection where with first device after one switch is connected with the thermistor, the temperature checking method include：
First resistance value of the second electronic equipment described in obtaining when the first switch is off；
Obtain the second resistance value of the first switch second electronic equipment in the closure state；
According to the first resistance value and the second resistance value, the current resistance value of the thermistor is calculated；
According to the correspondence of the resistance value of the thermistor and temperature, obtain corresponding with the current resistance value of the thermistor
Current Temperatures.
2. temperature checking method according to claim 1, which is characterized in that described to obtain the first switch in disconnection
First resistance value of the second electronic equipment described in when state includes：
It accesses the instruction of first electronic equipment receiving second electronic equipment and detects that the first switch is disconnected
When opening, the ADC module in first electronic equipment detects the first resistance value of presently described second electronic equipment, first resistance
Value is the resistance value of branch where first device.
3. temperature checking method according to claim 1, which is characterized in that described to obtain the first switch in closure
Second resistance value of the second electronic equipment described in when state includes：
It accesses the instruction of first electronic equipment receiving second electronic equipment and detects that the first switch is closed
When conjunction, the ADC module in first electronic equipment detects the second resistance value of presently described second electronic equipment, second resistance
Value is total resistance value of the thermistor in parallel with first device and branch resistance where first device.
4. temperature checking method according to claim 1, which is characterized in that described to be hindered according to the first resistance value and second
Value, determines that the current resistance value of the thermistor includes：
The resistance value of the thermistor is obtained according to computing the resistor value formula in parallel.
5. temperature checking method according to claim 1, which is characterized in that second electronic equipment is with Mike's
Earphone, first device are the Mike of the earphone, and the first switch is hook key, correspondingly, described obtain described the
One switch when being off described in the first resistance value of the second electronic equipment include：
It is inserted into the instruction of first electronic equipment and when detecting that the hook key is not pressed receiving the earphone, it is described
ADC module in first electronic equipment detects the first resistance value of Mike's branch of presently described earphone.
6. temperature checking method according to claim 5, which is characterized in that described to obtain the first switch in closure
Second resistance value of the second electronic equipment described in when state includes：
The instruction of first electronic equipment is accessed receiving the earphone and when detecting that the hook key is pressed, described
ADC module in one electronic equipment detects the second resistance value of presently described earphone, and second resistance value is in parallel with the Mike
Thermistor and the Mike where branch resistance total resistance value.
7. a kind of temperature-detecting device is applied to the first electronic equipment, which is characterized in that first electronic equipment and the second electricity
Sub- coordinative composition of equipments uses, wherein second electronic equipment includes：First device, first switch and thermistor, described
Branch circuit parallel connection where with first device after one switch is connected with the thermistor；The temperature-detecting device includes：
First acquisition module, the first resistance for the second electronic equipment described in obtaining when the first switch is off
Value；
Second acquisition module, for obtain the first switch in the closure state second electronic equipment second resistance
Value；
Computing module, for according to the first resistance value and the second resistance value, determining the current resistance value of the thermistor；
Third acquisition module, for according to the resistance value of the thermistor and the correspondence of temperature, obtaining and temperature-sensitive electricity
The corresponding Current Temperatures of current resistance value of resistance.
8. a kind of temperature sensing circuit, which is characterized in that match, be based on the temperature-detecting device described in claim 7
Claim 1~6 any one of them temperature checking method carries out temperature detection；Including：First device, thermistor and
One switch, the first switch connect with the thermistor, and branch after connecting and first device place branch are simultaneously
Connection.
9. a kind of electronic equipment, which is characterized in that including temperature sensing circuit as claimed in claim 8.
10. electronic equipment according to claim 9, which is characterized in that the electronic equipment is the earphone with Mike.
11. electronic equipment according to claim 10, which is characterized in that the thermistor is arranged on a left side for the earphone
The intersection of loud speaker and the circuit of right loud speaker.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310451102.0A CN104458048B (en) | 2013-09-25 | 2013-09-25 | A kind of temperature checking method, device, circuit and a kind of electronic equipment |
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| CN201310451102.0A CN104458048B (en) | 2013-09-25 | 2013-09-25 | A kind of temperature checking method, device, circuit and a kind of electronic equipment |
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| CN104458048B true CN104458048B (en) | 2018-10-12 |
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| CN113804322A (en) * | 2021-08-27 | 2021-12-17 | 惠州Tcl移动通信有限公司 | Circuit system, method, storage medium and equipment for detecting temperature |
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| GB2256051B (en) * | 1991-05-21 | 1994-09-07 | Kane May Limited | Temperature measuring apparatus |
| CN1549652A (en) * | 2003-05-22 | 2004-11-24 | 华为技术有限公司 | Earphone for realizing temperaure measuring function of electronic products |
| CN102117793A (en) * | 2010-01-06 | 2011-07-06 | 联发科技股份有限公司 | E-fuse macro |
| CN102457598A (en) * | 2010-11-05 | 2012-05-16 | 谢达斌 | Peripheral physiological detection devices and peripheral auxiliary devices for smart phones |
| CN102589741A (en) * | 2012-03-14 | 2012-07-18 | 华为终端有限公司 | Method and device for detecting temperature |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4782624B2 (en) * | 2006-07-05 | 2011-09-28 | ホーチキ株式会社 | Heat sensor |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2256051B (en) * | 1991-05-21 | 1994-09-07 | Kane May Limited | Temperature measuring apparatus |
| CN1549652A (en) * | 2003-05-22 | 2004-11-24 | 华为技术有限公司 | Earphone for realizing temperaure measuring function of electronic products |
| CN102117793A (en) * | 2010-01-06 | 2011-07-06 | 联发科技股份有限公司 | E-fuse macro |
| CN102457598A (en) * | 2010-11-05 | 2012-05-16 | 谢达斌 | Peripheral physiological detection devices and peripheral auxiliary devices for smart phones |
| CN102589741A (en) * | 2012-03-14 | 2012-07-18 | 华为终端有限公司 | Method and device for detecting temperature |
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| CN104458048A (en) | 2015-03-25 |
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