CN1296167A - Method and device for testing temp. of notebook computer - Google Patents
Method and device for testing temp. of notebook computer Download PDFInfo
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- CN1296167A CN1296167A CN 99124321 CN99124321A CN1296167A CN 1296167 A CN1296167 A CN 1296167A CN 99124321 CN99124321 CN 99124321 CN 99124321 A CN99124321 A CN 99124321A CN 1296167 A CN1296167 A CN 1296167A
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- laptop
- detected temperatures
- peripheral cell
- chipset
- thermistor
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Abstract
The present invention relates to a method for detecting temperature in notebook computer and its device. It is characterized by that the thermistor is used to obtain the partial voltage of every element maybe cause overheat in notebook computer, and transfers said partial voltage to voltage detection pin of chip set to make contrast and make the chip set can sense and monitor temperature of every external element and define the current operation state of element according to said partial voltage. Besides, said invented device can be placed in any position of notebook computer, and has no need of adding additional control chip to implement temp. sense so as to greatly reduce cost.
Description
The present invention relates to a kind of method and apparatus of detected temperatures, particularly relate to and a kind ofly utilize thermistor to obtain in the laptop each dividing potential drop that might produce overheated element and the voltage detecting pin that this dividing potential drop is delivered to chipset is compared, by chipset each peripheral cell done the method and apparatus of detected temperatures in the laptop of temperature sensing monitoring.
On the motherboard of traditional notebook type computer, dispose many interface arrangements, for example central processing unit, ide interface, pcmcia interface, electric battery etc.When laptop when operating, the temperature of its inner member itself will raise gradually.
Please refer to Fig. 1, shown in it is a kind of configuration schematic diagram of conventional laptop inner member, and it comprises a motherboard 10, disposes central processing unit 12, IDE device 14, PCMCIA device 16 and chipset 18 etc. on motherboard 10.Usually above central processing unit 12, dispose a fan (not shown), in order to the thermal source of heat radiation central processing unit 12 generations.In addition,, dispose a fan 22 and 20 respectively, similarly in order to IDE device 14 and the PCMCIA device of dispelling the heat respectively at IDE device 14 and PCMCIA device 16 rears.In addition, around motherboard 10, dispose electric battery 24, in order to the laptop operating power to be provided.
Thermal source in the conventional laptop mainly is to come from central processing unit 12.During its mode of operation, the heat that central processing unit 12 is produced can be diffused into the peripheral cell around it, makes the temperature of peripheral cell rise, IDE device 14 and PCMCIA device 16 for example shown in Figure 1.Therefore, usually laptop can be set up the fan (not shown) peripheral cell is lowered the temperature near central processing unit 12.
Yet, fan continues opening and causes fan failure easily, and perhaps the setting mistake because of the user makes fan to operate, or breaks down because of central processing unit, or, all may cause the overheated phenomenon of individual elements because of electric battery overcharges (overcharging) or the like.Therefore, if can't when each element over-temperature, detect and learn and manage to reduce its temperature, will cause element impaired.
If will detect the temperature of learning each peripheral cell really, can in each peripheral cell, add a temperature sensor, yet Using such method certainly will to increase the use of integrated circuit (IC), can increase the trouble of hardware monitoring simultaneously, the problem that so will cause cost to improve.
In view of this, the present invention proposes the method and apparatus of detected temperatures in a kind of laptop, and this device comprises a thermistor and a resistance.One end of thermistor is connected to a voltage source, and its other end connects the voltage detecting pin of a chipset and an end of resistance, and the other end ground connection of resistance.
Perhaps, with an end ground connection of above-mentioned thermistor, its other end is connected to the voltage detecting pin of chipset and an end of resistance, and the other end of resistance is connected to voltage source.
The device of detected temperatures in the laptop proposed by the invention is to utilize thermistor to obtain that each might produce the dividing potential drop of overheated element in the laptop.And, the voltage detecting pin that this dividing potential drop is connected to chipset compares, make chipset to do temperature sensing and monitoring, and decide the present mode of operation of peripheral cell, for example stop the operation of this element or reduce its operating frequency etc. according to this dividing potential drop to each peripheral cell.
Temperature-detecting device of the present invention can be configured in any position in the laptop, for example be disposed at peripheral cell around near.And, need not increase extra control chip fully and do temperature sensing, to reach the purpose that reduces cost and expend.
For above-mentioned and other purposes of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Graphic simple declaration:
Shown in Fig. 1 is the configuration schematic diagram of the inner member of conventional a kind of laptop;
Shown in Fig. 2 is manipulated or operated apparatus according to detected temperatures in a kind of laptop of a preferred embodiment of the present invention;
Shown in Fig. 3 is to vary with temperature temperature one voltage curve that its resistance value (generation magnitude of voltage) also changes thereupon when thermistor; And
Shown in Fig. 4 is manipulated or operated apparatus according to detected temperatures in a kind of laptop of another preferred embodiment of the present invention.
Embodiment
Because the power supply unit of laptop itself has had the function that voltage detecting is adjusted, when the voltage of power supply unit unpunctual, it can stop out-put supply automatically, that is the existing good control of the voltage source of laptop, so for laptop, the voltage detecting pin of peripheral cell control chip (as south bridge) is unnecessary.And desktop computer is because of fitting together each element unlike laptop, thus do not have because of around element cause overheated problem itself to produce, this is and the desktop computer difference.The present invention utilizes the voltage detecting of south bridge point to do the temperature sensing of each peripheral cell, and wherein the voltage detecting of south bridge point comprises 4 check points, is respectively 12V, 5V, 3.3V and 2.5V.
Please refer to Fig. 2, shown in it is manipulated or operated apparatus according to detected temperatures in a kind of laptop of a preferred embodiment of the present invention.
The device 33 of detected temperatures comprises a thermistor 34 and a resistance 36 in the laptop that the present invention proposes.As shown in Figure 2, an end of thermistor 34 is connected to a voltage source V CC, and its other end connects the voltage detecting pin of chipset 30 and an end of resistance 36, and the other end ground connection of resistance 36.Should be noted that, the device of detected temperatures in the laptop proposed by the invention, be disposed at peripheral cell 32 around near, that is configurable any position in laptop, to monitor the temperature of the element that each several part might be overheated in the laptop effectively, as long as can reach the purpose of the temperature of sensing peripheral cell 32.In above-mentioned, peripheral cell 32 for example is previous IDE device 14, PCMCIA device 16, electric battery 22 or LCD (LCD shown in Figure 1; Do not show) or the like.
For instance, please refer to Fig. 3, shown in it is to vary with temperature temperature one voltage curve that its resistance value (generation magnitude of voltage) also changes thereupon when thermistor.Because the resistance value of thermistor 34 can change along with temperature variation thereupon, as shown in Figure 3, when the temperature of thermistor 34 rises to 60 degree (60 ℃) Celsius, it produces magnitude of voltage and is about about 2.3 volts (V), that is thermistor 34 can produce different magnitudes of voltage respectively under different temperature.In other words, the dividing potential drop of the connected node S that thermistor 34 and resistance are 36 can change along with the temperature of the peripheral cell 32 that thermistor 34 sensed.Because node S is connected to the voltage detecting pin of chipset 30, so chipset 30 can learn how many temperature of peripheral cell 32 is according to the dividing potential drop that node S transmitted, further whether decision carries out overheated handling procedure again, for example: stop the running operation of peripheral cell 32 immediately, its temperature is reduced in the normal range.In addition, because the temperature requirement scope of peripheral cell 32 is very inaccurate like central processing unit, various situations have just enough been dealt with so detect the temperature of each several part element in the laptop in this way.
Referring again to Fig. 2.The device 33 of detected temperatures is applied to the operating process in the chipset 30 in the laptop proposed by the invention, can be as described below.The voltage detecting pin of chipset 30 is connected to the positive input terminal of its internal comparator 38, and the negative input end of comparer 38 receives a reference voltage, compares in order to the voltage with the voltage detecting pin of chipset 30.When comparer 38 found that the dividing potential drop of node S exceeds in the scope of its reference voltage, comparer 38 can be sent a undesired information to latch (latch) 40.Then, latch 40 can pin this undesired information and it is delivered in the register 42.Afterwards, register 42 can be delivered to this undesired information in the enable circuits 44 again, to enable this enable circuits 44, makes enable circuits 44 send an enable signal to central processing unit 46.At this moment, after central processing unit 46 receives the enable signal that enable circuits 44 transmitted, just can handle action immediately relatively, for example send a look-at-me and give peripheral cell 32, stop the operation of peripheral cell 32 or reduce its operating frequency or power supply is cut away, maybe will be system emergency cutoff or the like, avoid because of the peripheral cell 32 overheated situations of burning that cause.
Therefore, the present invention utilizes the temperature sensing device with thermistor 34, obtains that each might produce the dividing potential drop of overheated element in the laptop.And the voltage detecting pin that this dividing potential drop is connected to chipset 30 compares, and uses to make the present mode of operation of chipset 30 according to this dividing potential drop decision element, for example stops the operation of this element or reduces its operating frequency etc.Because the cost of thermistor 34 is low, can be configured in any position in the laptop, so can monitor the temperature of the element that each several part might be overheated in the laptop effectively.In addition, utilize the thermistor 34 and the voltage detecting pin of chipset 30 to come detected temperatures, because need not increase extra control chip, so cost can greatly reduce.
In addition, device 33 of the present invention can have various different designs modes, structure for example shown in Figure 4, and an end of resistance 50 is connected to voltage source V CC, its other end connects the voltage detecting pin of chipset 30 and an end of thermistor 52, and the other end ground connection of thermistor 52.In a word, as long as can reach the purpose of the temperature of the element that each several part might be overheated in the effective monitoring laptop.
In sum, the present invention has following advantage:
(1) can be configured in any position in the laptop, for example be disposed at peripheral cell around near.
(2) need not increase extra control chip and do temperature sensing, can reduce cost widely and expend.
(3) utilize chipset for example the voltage detecting point of south bridge do the temperature sensing and the monitoring of each peripheral cell.
Though the present invention with preferred embodiment openly as above; yet it is not in order to qualification the present invention, any technician in this area, without departing from the spirit and scope of the present invention; can make various changes and modification, so protection scope of the present invention is defined by accompanying Claim.
Claims (19)
1. the device of detected temperatures in the laptop, this laptop comprises a chipset and at least one peripheral cell, the device of detected temperatures comprises in this laptop:
One thermistor, the one end is connected to a voltage source, and its other end connects the voltage detecting pin of this chipset; And
One resistance, an end of this resistance connects the other end of this thermistor, the other end ground connection of this resistance.
2. the device of detected temperatures in the laptop as claimed in claim 1, wherein in this laptop the device of detected temperatures be disposed at this peripheral cell around near.
3. the device of detected temperatures in the laptop as claimed in claim 1, wherein this chipset comprises the South Bridge chip group.
4. the device of detected temperatures in the laptop as claimed in claim 1, wherein this peripheral cell comprises LCD.
5. the device of detected temperatures in the laptop as claimed in claim 1, wherein this peripheral cell comprises the IDE device.
6. the device of detected temperatures in the laptop as claimed in claim 1, wherein this peripheral cell comprises the PCMCIA device.
7. the device of detected temperatures in the laptop as claimed in claim 1, wherein this peripheral cell comprises electric battery.
8. the device of detected temperatures in the laptop, this laptop comprises a chipset and at least one peripheral cell, the device of detected temperatures comprises in this laptop:
One thermistor, an end ground connection of this thermistor, its other end connects the voltage detecting pin of this chipset; And
One resistance, an end of this resistance is connected to a voltage source, and its other end connects the other end of this thermistor.
9. the device of detected temperatures in the laptop as claimed in claim 8, wherein in this laptop the device of detected temperatures be disposed at this peripheral cell around near.
10. the device of detected temperatures in the laptop as claimed in claim 8, wherein this chipset comprises the South Bridge chip group.
11. the device of detected temperatures in the laptop as claimed in claim 8, wherein this peripheral cell comprises LCD.
12. the device of detected temperatures in the laptop as claimed in claim 8, wherein this peripheral cell comprises the IDE device.
13. the device of detected temperatures in the laptop as claimed in claim 8, wherein this peripheral cell comprises the PCMCIA device.
14. the device of detected temperatures in the laptop as claimed in claim 8, wherein this peripheral cell comprises electric battery.
15. the method for detected temperatures in the laptop, this laptop comprises a chipset and at least one peripheral cell, and the method for detected temperatures comprises in this laptop:
According to the temperature of this peripheral cell, send a voltage division signal to temperature that should peripheral cell to the voltage detecting pin of this chipset;
This chipset is the voltage detecting point of this voltage division signal and its inside relatively, judges that this voltage division signal is whether in the scope of this voltage detecting point; And
If this voltage division signal not in the scope of this voltage detecting point, is carried out a cooling action to this peripheral cell.
16. the method for detected temperatures in the laptop as claimed in claim 15, wherein this cooling action comprises the operation that stops this peripheral cell.
17. the method for detected temperatures in the laptop as claimed in claim 15, wherein this cooling action comprises the operating frequency that reduces this peripheral cell.
18. the method for detected temperatures in the laptop as claimed in claim 15, wherein this cooling action comprises the power supply that cuts away this laptop.
19. the device of detected temperatures in the laptop as claimed in claim 15, wherein this cooling action comprises and will be the system emergency cutoff.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991243218A CN1153052C (en) | 1999-11-16 | 1999-11-16 | Method and device for testing temp. of notebook computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991243218A CN1153052C (en) | 1999-11-16 | 1999-11-16 | Method and device for testing temp. of notebook computer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1296167A true CN1296167A (en) | 2001-05-23 |
| CN1153052C CN1153052C (en) | 2004-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991243218A Expired - Lifetime CN1153052C (en) | 1999-11-16 | 1999-11-16 | Method and device for testing temp. of notebook computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1153052C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7839478B2 (en) | 2005-07-15 | 2010-11-23 | Samung Electronics Co., Ltd. | Temperature sensor for display device, thin film transistor array panel including the temperature sensor, liquid crystal display, driving circuit for liquid crystal display and flicker controlling system for liquid crystal display |
| CN101926078A (en) * | 2008-02-27 | 2010-12-22 | 奥斯兰姆有限公司 | Method of protection from over-temperature and corresponding arrangement |
| CN101430231B (en) * | 2007-10-31 | 2010-12-29 | 凹凸电子（武汉）有限公司 | Temperature detection method and system |
| CN1920505B (en) * | 2005-07-15 | 2011-10-05 | 三星电子株式会社 | Temperature sensor, thin film transistor array panel, liquid crystal display |
| CN103208824A (en) * | 2012-01-16 | 2013-07-17 | 华为终端有限公司 | Charging circuit and charger |
| CN103335740A (en) * | 2013-06-28 | 2013-10-02 | 成都汉康信息产业有限公司 | Economic GPS telemetric terminal |
| CN105531894A (en) * | 2013-04-09 | 2016-04-27 | 华为技术有限公司 | System and method for controlling power switch |
| CN115454221A (en) * | 2022-09-02 | 2022-12-09 | 无锡众星微系统技术有限公司 | Temperature control method of SAS controller |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9534962B2 (en) * | 2010-07-19 | 2017-01-03 | Mediatek Inc. | Temperature measurement devices |
-
1999
- 1999-11-16 CN CNB991243218A patent/CN1153052C/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7839478B2 (en) | 2005-07-15 | 2010-11-23 | Samung Electronics Co., Ltd. | Temperature sensor for display device, thin film transistor array panel including the temperature sensor, liquid crystal display, driving circuit for liquid crystal display and flicker controlling system for liquid crystal display |
| CN1920505B (en) * | 2005-07-15 | 2011-10-05 | 三星电子株式会社 | Temperature sensor, thin film transistor array panel, liquid crystal display |
| CN101430231B (en) * | 2007-10-31 | 2010-12-29 | 凹凸电子（武汉）有限公司 | Temperature detection method and system |
| CN101926078A (en) * | 2008-02-27 | 2010-12-22 | 奥斯兰姆有限公司 | Method of protection from over-temperature and corresponding arrangement |
| US8514528B2 (en) | 2008-02-27 | 2013-08-20 | Osram Gesellschaft Mit Beschraenkter Haftung | Method of protection from over-temperature and corresponding arrangement |
| CN103208824A (en) * | 2012-01-16 | 2013-07-17 | 华为终端有限公司 | Charging circuit and charger |
| CN103208824B (en) * | 2012-01-16 | 2016-12-07 | 华为终端有限公司 | A kind of charging circuit and charger |
| CN105531894A (en) * | 2013-04-09 | 2016-04-27 | 华为技术有限公司 | System and method for controlling power switch |
| CN103335740A (en) * | 2013-06-28 | 2013-10-02 | 成都汉康信息产业有限公司 | Economic GPS telemetric terminal |
| CN115454221A (en) * | 2022-09-02 | 2022-12-09 | 无锡众星微系统技术有限公司 | Temperature control method of SAS controller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1153052C (en) | 2004-06-09 |
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