CN101770269B - Computer system and power source control device - Google Patents
Computer system and power source control device Download PDFInfo
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- CN101770269B CN101770269B CN2008101889794A CN200810188979A CN101770269B CN 101770269 B CN101770269 B CN 101770269B CN 2008101889794 A CN2008101889794 A CN 2008101889794A CN 200810188979 A CN200810188979 A CN 200810188979A CN 101770269 B CN101770269 B CN 101770269B
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Abstract
The invention discloses a computer system and a power source control device. The power source control device comprises a temperature sensor, a first voltage converter, a reset unit, a diode and a second voltage converter, wherein the temperature sensor is used for sensing measurement temperature and outputting a sensing signal according to the measurement temperature; the first voltage converter is used for converting a power source voltage of the computer system into first voltage; and the reset unit operates under the first voltage and switches an electric potential of a reset signal generated by the output end according to the electric potential of the power source voltage of the computer system. Besides, the diode is used for determining whether the reset signal is switched to a second electric potential according to the sensing signal; and second voltage is used for generating a starting signal according to the reset signal with the first electric potential to enable an embedded controller in the computer system.
Description
Technical field
The invention relates to a kind of computer system and its power control, and particularly relevant for a kind of computer system and its power control with overheat protector mechanism.
Background technology
Fig. 1 is the partial schematic diagram of existing computer system.With reference to Fig. 1, existing computer system 100 comprises temperature sensor 110, embedded controller 120, resistance R 11 and R12, capacitor C 1 and diode Z1.Have computer system 100 now under normal circumstances, temperature sensor 110 can not produce the sensing signal STH1 with low logic current potential.At this moment, voltage V1 will be through resistance R 12 guiding path with capacitor C 1, and causes embedded controller 120 normally to be worked.
On the contrary, when the inner central processing unit of existing computer system 100 or a certain operation element were overheated, temperature sensor 110 had generation the sensing signal STH1 of low logic current potential.At this moment, embedded controller 120 can't normal running, and then causes existing computer system 100 shutdown to prevent overheated work.On the other hand, embedded controller 120 can see through diode Z1 and receive reset signal SRE1.When reset signal SRE1 was switched to low logic current potential, embedded controller 120 also can't normal running and shut down.In addition, capacitor C 1 is to cooperate above-mentioned operation mechanism, and the path of discharge or charging is provided.
It should be noted that prior art is the sensing signal STH1 that is produced by temperature sensor 110, whether the work of controlling embedded controller 120 and then reach the function of heat protection.Yet; This kind way but has two problems: the first is after existing computer system 100 is shut down for low logic current potential because of sensing signal STH1; If the user desires to start shooting again by the start key of pressing system; But measure temperature and also do not drop to 85 degree when following, temperature sensor 110 still can produce the sensing signal STH1 with low logic current potential, forces existing computer system 100 to shut down.
Its two are existing computer systems 100 because of sensing signal STH1 for after low logic current potential shuts down; The received voltage V1 of embedded controller 120 is not fully under the situation of discharge; Can make still operate as normal of embedded controller 120, the temperature sensor 110 of promptly representing embedded controller 120 control is operate as normal still.If the user presses the start key of pressing system, having computer system 100 now still can be under the situation of temperature sensor 110 operate as normal, and temperature sensor 110 directly output hangs down the sensing signal STH1 of logic current potential and forces shutdown.
In other words, above-mentioned two problems will cause the computer system boot-strap just compelled shutdown in back once, and then cause the user to take for computer damaging, or start repeatedly and shorten serviceable life of computer.
Summary of the invention
The present invention provides a kind of power control, and the sensing signal that utilizes temperature sensor to produce comes CS and diode, and then controls the operation of embedded controller indirectly.Whereby, computer system will have time enough that the second received voltage of embedded controller is discharged.
The present invention provides a kind of computer system, utilizes power control to avoid the repeatedly start of computer system after getting into overheat protector mechanism, and the release user takes for the situation generation that computer has damaged.
The present invention proposes a kind of power control; In order to the operation of controlling an embedded controller in the computer system whether, and power control comprises a temperature sensor, one first electric pressure converter, a reset cell, a switch, a diode and one second electric pressure converter.Wherein, temperature sensor is measured temperature in order to sensing one, and exports a sensing signal according to this.First electric pressure converter converts one first voltage in order to the supply voltage with computer system.
Reset cell operates under first voltage, and according to the current potential of the supply voltage of computer system, switches the current potential of the reset signal that its output terminal produces.First end of switch is in order to receiving first voltage, and second end of switch is electrically connected to reset cell.In addition, switch is in order to its first end of conducting and second end according to the sensing signal with first current potential.On the other hand, diode electrically is connected between the output terminal of temperature sensor and reset cell, to determine whether reset signal is switched to one second current potential according to sensing signal.In addition, second electric pressure converter is electrically connected to the output terminal and the embedded controller of reset cell, and in order to produce an enabling signal according to having the reset signal of first current potential, with the activation embedded controller.
In one embodiment of this invention, when in the safe range of above-mentioned measurement temperature at temperature sensor, temperature sensor output has the sensing signal of first current potential, to cause not conducting of diode and to keep the current potential of reset signal.Otherwise when above-mentioned measurement temperature exceeded the safe range of temperature sensor, temperature sensor had the sensing signal of second current potential with output, switches to second current potential with conducting diode and with reset signal.
From another viewpoint, the present invention proposes a kind of computer system, comprises an embedded controller and above-mentioned power control.Wherein, power control is electrically connected to embedded controller, and in order to the operation of control embedded controller whether.
Based on above-mentioned, the present invention is that the sensing signal that utilizes temperature sensor to produce was controlled switch and diode, controls reset cell to cause diode and switch to form double-deck excess temperature preventing mechanism.Thus, when computer system will restart, it must see through controlling one by one of first electric pressure converter, switch, diode, reset cell and second electric pressure converter, just can cause embedded controller normally to be operated.Whereby, computer system will have time enough that the second received voltage of embedded controller is discharged, and have the long time to carry out the heat radiation of system.In other words, the present invention can avoid the repeatedly start of computer system after getting into overheat protector mechanism, and the release user takes for the situation generation that computer has damaged.
Description of drawings
For let above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, elaborate below in conjunction with the accompanying drawing specific embodiments of the invention, wherein:
Fig. 1 is the partial schematic diagram of existing computer system.
Fig. 2 illustrates and is the partial block diagram according to the computer system of one embodiment of the invention.
Fig. 3 illustrates and is the thin portion Organization Chart of reset cell under diode and switch control.
The main element symbol description:
100: existing computer system
110,221: temperature sensor
120,210: embedded controller
R11, R12, R31～R33: resistance
Z1, Z2: diode
C1: electric capacity
V1: voltage
SRE1, SAUX: reset signal
STH1, STH2: sensing signal
200: computer system
220: power control
222: reset cell
223～225: electric pressure converter
SW21: switch
VBAT: supply voltage
V5LA: first voltage
V3LA: second voltage
V5A: tertiary voltage
SEN: enabling signal
310: reset circuit
VR1: first reference voltage
VR2: second reference voltage
Embodiment
Fig. 2 illustrates and is the partial block diagram according to the computer system of one embodiment of the invention.With reference to Fig. 2, computer system 200 comprises an embedded controller 210 and a power control 220.In order to the operation of control embedded controller 210 whether wherein, power control 220 is electrically connected to embedded controller 210, and, can start shooting normally and shut down to cause computer system 200.
Further, power control 220 comprises a temperature sensor 221, a reset cell 222, a switch SW 21, a diode Z2 and a plurality of electric pressure converter 223～225.Wherein, diode Z2 is electrically connected between the output terminal of temperature sensor 221 and reset cell 222.The control end of switch SW 21 is electrically connected to temperature sensor 221, and its second end is electrically connected to reset cell 222.Electric pressure converter 223 is electrically connected to the output terminal and the embedded controller 210 of reset cell 222.In addition, electric pressure converter 225 is electrically connected to embedded controller 210.
In whole start, electric pressure converter 224 converts one first voltage V5LA in order to the supply voltage VBAT with computer system 200.Temperature sensor 221 is in order to the measurement temperature of an operation element in the sensing computer system 200, like plate temperature of central processing unit or its work chip, element or motherboard etc., and exports a sensing signal STH2 according to this.On the other hand, reset cell 222 operates under the first voltage V5LA, and switches the current potential of the reset signal SAUX that its output terminal produces according to the current potential of supply voltage VBAT.
It should be noted that in the present embodiment, the received first voltage V5LA of reset cell 222 with and the reset signal SAUX that exported, receive the control of switch SW 21 and diode Z2 respectively.At this, diode Z2 will be according to sensing signal STH2, and whether decision switches to one second current potential with reset signal SAUX.21 of switch SW can be according to sensing signal STH2, and whether determines its first end of conducting and second end, in time to switch the duty of reset cell 222.
For instance, Fig. 3 illustrates and is the thin portion Organization Chart of reset cell under diode and switch control.As shown in Figure 3, in the present embodiment, first current potential is to be example with the logical one, and second current potential is to be example with the logical zero.In addition, under these conditions, the negative electrode of diode Z2 is electrically connected to temperature sensor 221, and its anode is electrically connected to the output terminal of reset cell 222.
In practical operation; When in the safe range of measurement temperature at temperature sensor 221 of computer system 200; Just work as computer system 200 under normal operation, temperature sensor 221 can output (for example: sensing signal STH2 logical one) have first current potential.At this moment, switch SW 21 will be according to sensing signal STH2 its first end of conducting and second end, exporting the first voltage V5LA, but make reset cell 222 operate as normal to reset cell 222.Moreover the diode Z2 of this moment can't conducting, and causes reset signal SAUX to maintain original current potential.
On the other hand, when the measurement temperature of computer system 200 exceeded the safe range of temperature sensor 221, just when computer system 200 was overheated, temperature sensor 221 (for example: sensing signal STH2 logical zero) had second current potential with output.At this moment, switch SW 21 not conductings, and stop to export the first voltage V5LA to reset cell 222, and reset cell 222 can't be worked under the state of no WV.Moreover the diode Z2 of this moment is with conducting, so that reset signal SAUX (for example: logical zero) is switched to second current potential.
It should be noted that; Though present embodiment has been enumerated the enforcement kenel of first current potential and second current potential; But it is not in order to limit the present invention; This area has the enforcement kenel that common knowledge the knowledgeable can change first current potential and second current potential according to design, and for example: with first potential setting is logical zero, and second potential setting is a logical one.In addition, along with the change of the enforcement kenel of first and second current potential, this moment, the anode of diode Z2 was electrically connected to temperature sensor 221, and its negative electrode will be electrically connected to the output terminal of reset cell 222.
Please continue with reference to Fig. 3, in the present embodiment, 222 of reset cells comprise a plurality of resistance R 31～R33 and a reset circuit 310.Wherein, first end of resistance R 31 is in order to reception supply voltage VBAT, and its second end is in order to produce one first reference voltage VR1.First end of resistance R 32 is electrically connected to second end of resistance R 31, and its second end is in order to produce one second reference voltage VR2.First end of resistance R 33 is electrically connected to second end of resistance R 32, and its second end is electrically connected to an earth terminal.Moreover; 310 of reset circuits are electrically connected to second end and the switch SW 21 of resistance R 31 and R32; And the output terminal of reset circuit 310 is electrically connected to diode Z2 and electric pressure converter 223, and wherein the output terminal of reset circuit 310 is the output terminal of reset cell 222.
In integrated operation, when computer system 200 under normal operation, switch SW 21 can be exported the first voltage V5LA constantly, operates under the first voltage V5LA to cause reset circuit 310.At this moment, reset circuit 310 can be done comparison with predeterminated voltage of its inside respectively with the first reference voltage VR1 and the second reference voltage VR2, and switches the current potential of the reset signal SAUX that its output terminal produces according to comparative result.
For instance, in the present embodiment, as the first reference voltage VR1 and the second reference voltage VR2 during respectively greater than predeterminated voltage, reset circuit 310 has generation the reset signal SAUX of first current potential.Otherwise as the first reference voltage VR1 and the second reference voltage VR2 during respectively less than predeterminated voltage, reset circuit 310 has generation the reset signal SAUX of second current potential.In other words; When computer system 200 under normal operation; If the supply voltage VBAT of computer system 200 crosses when low, the current potential of the first reference voltage VR1 and the second reference voltage VR2 also will be along with reduction, and then causes reset circuit 310 generations to have the reset signal SAUX of first current potential.
On the other hand, when computer system 200 is overheated, switch SW 21 will stop to export the first voltage V5LA, can't normal running to cause reset circuit 310.At this moment, reset signal SAUX also will relatively be switched to second current potential.It should be noted that from another current path when computer system 200 was overheated, reset signal SAUX also can be switched to second current potential along with the conducting of diode Z2.
In other words, when computer system 200 was overheated, present embodiment was the operation mechanism that sees through diode Z2 and switch SW 21, causes reset signal SAUX to switch to second current potential.At this,, that the overheat protector mechanism of render electrical brain system 200 is more perfect by diode Z2 and switch SW 21 formed double-deck preventing mechanisms.Because diode Z2, switch SW 21 or reset circuit 310 one of them element produce when damaging, the overheat protector of computer system 200 mechanism still can not be affected.
Please continue with reference to Fig. 2, electric pressure converter 223 is in order to produce an enabling signal SEN according to reset signal SAUX, with activation embedded controller 210.On the other hand, electric pressure converter 225 converts one second voltage V3LA in order to the supply voltage VBAT with computer system 200, with the operating voltage as embedded controller 210.Wherein, electric pressure converter 223 more can produce a tertiary voltage V5A according to reset signal SAUX, and supply voltage VBAT＞first voltage V5LA＞second voltage V3LA＞tertiary voltage V5A.
Thus, when computer system 200 under normal operation, and the supply voltage VBAT of computer system 200 is when enough, reset cell 222 will be exported reset signal SAUX constantly, and electric pressure converter 223 will produce enabling signal SEN constantly.Whereby, embedded controller 210 will operate under the second voltage V3LA, and begin to carry out corresponding operation according to enabling signal SEN.On the other hand, when computer system 200 is overheated, reset circuit 310 will stop to produce reset signal SAUX, and electric pressure converter 223 will stop to produce enabling signal SEN.Whereby, embedded controller 210 can't normal running, and then 200 shutdown of render electrical brain system, and reaches overheat protector mechanism.
It should be noted that; After computer system 200 gets into overheat protector mechanism; This moment is if the user pushes the start key (not showing) of computer system 200; After then computer system 200 must be operated via electric pressure converter 225, switch SW 21, diode Z21, reset cell 222 and electric pressure converter 223 seriatim, just can cause embedded controller 210 normally to be operated.Thus, computer system 200 will have time enough that the embedded controller 210 second received voltage V3LA are discharged, and have the long time to carry out the heat radiation of system.
In sum; The present invention is that the sensing signal that utilizes temperature sensor to produce was controlled switch and diode; Causing diode and switch to form double-deck excess temperature preventing mechanism, and then control the operation of reset cell, electric pressure converter and embedded controller indirectly.Thus, when computer system will restart, it must spend the more time caused embedded controller normally to be operated.Whereby, computer system will have time enough that the second received voltage of embedded controller is discharged, and have the long time to carry out the heat radiation of system.In other words, the present invention can avoid the repeatedly start of computer system after getting into overheat protector mechanism, and the release user takes for the situation generation that computer has damaged.In addition, the formed double-deck preventing mechanism of diode and switch, the overheat protector mechanism of render electrical brain system is more perfect.
Though the present invention discloses as above with preferred embodiment; Right its is not that any those skilled in the art are not breaking away from the spirit and scope of the present invention in order to qualification the present invention; When can doing a little modification and perfect, so protection scope of the present invention is when being as the criterion with what claims defined.
Claims (8)
1. power control, in order to the operation of controlling an embedded controller in the computer system whether, this power control comprises:
One temperature sensor is measured temperature in order to sensing one, and is exported a sensing signal according to this;
One first electric pressure converter converts one first voltage in order to the supply voltage with this computer system;
One reset cell operates under this first voltage, with the current potential according to this supply voltage, switches the current potential of the reset signal that its output terminal produces;
One switch, its first end be in order to receiving this first voltage, and its second end is electrically connected to this reset cell, and this switch is in order to its first end of conducting and second end according to this sensing signal with one first current potential;
One diode is electrically connected between the output terminal of this temperature sensor and this reset cell, to determine whether this reset signal is switched to one second current potential according to this sensing signal; And
One second electric pressure converter is electrically connected to output terminal and this embedded controller of this reset cell, in order to according to having this reset signal of this first current potential and producing an enabling signal, with this embedded controller of activation.
2. power control as claimed in claim 1; It is characterized in that; In the time of in this measures the safe range of temperature at this temperature sensor; The output of this temperature sensor has this sensing signal of this first current potential, to cause this not conducting of diode and to keep the current potential of this reset signal, when this measurement temperature exceeds this safe range of this temperature sensor; This temperature sensor output has this sensing signal of this second current potential, also this reset signal is switched to this second current potential with this diode of conducting.
3. power control as claimed in claim 1; It is characterized in that this first current potential is a logical one, this second current potential is a logical zero; And the negative electrode of this diode is electrically connected to this temperature sensor, and the anode of this diode is electrically connected to the output terminal of this reset cell.
4. power control as claimed in claim 1 is characterized in that, this reset cell comprises:
One first resistance, its first end are in order to receiving this supply voltage, and its second end is in order to produce one first reference voltage;
One second resistance, its first end is electrically connected to second end of this first resistance, and its second end is in order to produce one second reference voltage;
One the 3rd resistance, its first end is electrically connected to second end of this second resistance, and its second end is electrically connected to an earth terminal; And
One reset circuit; Be electrically connected to this first with second end and this switch of this second resistance; And the output terminal of this reset circuit is electrically connected to this diode and this second electric pressure converter; Wherein this reset circuit operates under this first voltage, so that this first is done comparison with its inner predeterminated voltage respectively with this second reference voltage, and determines whether producing this reset signal according to comparative result.
5. power control as claimed in claim 1 is characterized in that, more comprises:
One tertiary voltage converter is electrically connected to this embedded controller, converts one second voltage in order to this supply voltage with this computer system, with the operating voltage as this embedded controller.
6. computer system comprises:
One embedded controller; And
One power control is electrically connected to this embedded controller, and in order to the operation of controlling this embedded controller whether, wherein this power control comprises:
One temperature sensor is measured temperature in order to sensing one, and is exported a sensing signal according to this;
One first electric pressure converter converts one first voltage in order to the supply voltage with this computer system;
One reset cell operates under this first voltage, with the current potential according to this supply voltage, switches the current potential of the reset signal that its output terminal produces;
One switch, its first end be in order to receiving this first voltage, and its second end is electrically connected to this reset cell, and this switch is in order to its first end of conducting and second end according to this sensing signal with one first current potential;
One diode is electrically connected between the output terminal of this temperature sensor and this reset cell, to determine whether this reset signal is switched to one second current potential according to this sensing signal; And
One second electric pressure converter is electrically connected to output terminal and this embedded controller of this reset cell, in order to according to having this reset signal of this first current potential and producing an enabling signal, with this embedded controller of activation.
7. computer system as claimed in claim 6; It is characterized in that; In the time of in this measures the safe range of temperature at this temperature sensor; The output of this temperature sensor has this sensing signal of this first current potential, to cause this not conducting of diode and to keep the current potential of this reset signal, when this measurement temperature exceeds this safe range of this temperature sensor; This temperature sensor output has this sensing signal of this second current potential, also this reset signal is switched to this second current potential with this diode of conducting.
8. computer system as claimed in claim 6 is characterized in that, this reset cell comprises:
One first resistance, its first end are in order to receiving this supply voltage, and its second end is in order to produce one first reference voltage;
One second resistance, its first end is electrically connected to second end of this first resistance, and its second end is in order to produce one second reference voltage;
One the 3rd resistance, its first end is electrically connected to second end of this second resistance, and its second end is electrically connected to an earth terminal; And
One reset circuit; Be electrically connected to this first with second end and this switch of this second resistance; And the output terminal of this reset circuit is electrically connected to this diode and this second electric pressure converter; Wherein this reset circuit operates under this first voltage, so that this first is done comparison with its inner predeterminated voltage respectively with this second reference voltage, and determines whether producing this reset signal according to comparative result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101889794A CN101770269B (en) | 2008-12-30 | 2008-12-30 | Computer system and power source control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101889794A CN101770269B (en) | 2008-12-30 | 2008-12-30 | Computer system and power source control device |
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| Publication Number | Publication Date |
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| CN101770269A CN101770269A (en) | 2010-07-07 |
| CN101770269B true CN101770269B (en) | 2012-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101889794A Expired - Fee Related CN101770269B (en) | 2008-12-30 | 2008-12-30 | Computer system and power source control device |
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| CN (1) | CN101770269B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1605972A (en) * | 2003-10-06 | 2005-04-13 | 华邦电子股份有限公司 | Supply voltage control circuit of central processing unit |
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- 2008-12-30 CN CN2008101889794A patent/CN101770269B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1605972A (en) * | 2003-10-06 | 2005-04-13 | 华邦电子股份有限公司 | Supply voltage control circuit of central processing unit |
Non-Patent Citations (1)
| Title |
|---|
| JP特開2006-279391A 2006.10.12 |
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| CN101770269A (en) | 2010-07-07 |
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Effective date of registration: 20181126 Address after: Building 1, No. 231 Jiulong Road, Caoqiao Street, Pinghu City, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Jinxu Medical Technology Co., Ltd. Address before: Taipei City, Taiwan Chinese Shilin District Hougang Street No. 66 Patentee before: Inventec Corporation |
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