CN1831694A - Temp-control heating device for hydraulic bearing hard disk and its hard disk and control method - Google Patents
Temp-control heating device for hydraulic bearing hard disk and its hard disk and control method Download PDFInfo
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- CN1831694A CN1831694A CN 200510033462 CN200510033462A CN1831694A CN 1831694 A CN1831694 A CN 1831694A CN 200510033462 CN200510033462 CN 200510033462 CN 200510033462 A CN200510033462 A CN 200510033462A CN 1831694 A CN1831694 A CN 1831694A
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Abstract
A temperature - control heating device of hard disc for liquid bearing can maintain oil diaphragm in liquid bearing to be at liquid state still although hard disc of liquid bearing is under very bad environmental temperature condition for ensuring normal information process operation and for avoiding oil diaphragm liquid - solid state conversion caused by temperature factor.
Description
[technical field]
The invention relates to a kind ofly, be applied on the liquid bearing hard disk of signal conditioning package particularly a kind of liquid bearing hard disk temperature control heating arrangement and control method relevant for temperature control heating arrangement and control method.
[background technology]
Hard disk (Hard Disk) is played the part of the role who stores data in signal conditioning package, many important data all are stored in the hard disk, handle the rising of data speed along with signal conditioning package, the access speed of hard disk is also and then more and more faster, and in influencing the factor of the rotation speed of hard disk, except the running motor, another has been exactly a bearing, the conventional hard bearing adopts a kind of ball bearing (Ball Bearing), be exactly on hard disk disc axle center and pedestal, put into the steel ball of several metal materials, steel ball and bearing center touch together, and utilize these steel balls to support the weight of running motor, therefore produce once rotating the problem that has friction and heat, get off for a long time, steel ball with the friction in pedestal and axle center with collide under, can produce the phenomenon of wearing and tearing, cause shock resistance preferably can't be provided, and then hard disk life-span is shortened, therefore a kind of liquid bearing (FluidDynamic Bearing, FDB) be used on the hard disk, to replace conventional ball bearings.
Liquid bearing is to use the bearing of liquid stickiness oil film, replace the bearing that the conventional metals steel ball is coated with oil film, in the time of so can making motor running, do not have the problem that metal directly contacts and rubs, simultaneously because the effective absorbing vibration of oil film energy, the hard disk shock resistance is improved, improves the serviceable life and the reliability of hard disk relatively.
But because the characteristic of oil film, belong to a kind of liquid form at normal temperatures, if operating ambient temperature is lower than to Celsius subzero even when lower, oil film can produce the variation on the physical aspect, when temperature is hanged down to its states of matter inversion temperature, this moment, oil film then presented solid forms, this will cause liquid bearing can't bring into play its characteristic, even signal conditioning package can't be worked, therefore in harsh environmental conditions (example, the outer space or the area in frigid zone all the year round) under, but how to guarantee still operate as normal of signal conditioning package, become one of researchist's problem to be solved.
[summary of the invention]
Because the shortcoming of insurmountable problem of prior art and existence, the present invention proposes a kind of liquid axle hard disk temperature control heating arrangement and hard disk and control method, utilize temperature control heating arrangement heating liquid bearing, so that the oil film in the liquid bearing maintains liquid form, to guarantee the hard disk energy operate as normal of liquid bearing, and after heating-up temperature rises to a design temperature, stop the heating of temperature control heating arrangement.
For achieving the above object, the disclosed temperature control heating arrangement of the present invention, be applied to the liquid bearing hard disk, described temperature control heating arrangement includes following modules: temperature sensing module, control module, power module and heating module, utilize temperature sensing module liquid towards bearing hard disk to carry out temperature sensing, by the sensed temperature value, judge the state of oil film in the present liquid bearing, control module receives sensing module sensed temperature value, produce corresponding control signal, power supply with unlatching or powered-down module, heating module produces heat energy by the power supply that power module provides, with heating liquid bearing hard disk, so as to reaching the purpose of keeping liquid bearing hard disk operate as normal.
For achieving the above object, the disclosed temperature control heating arrangement of the present invention, be applied to the liquid bearing hard disk, described temperature control heating arrangement comprises following modules: temperature sensing module, temperature control modules, logical operation module, power module and heating module, and for fear of the temperature control modules fault, the present invention utilizes logical operation module with the electric potential signal of sensing module generation and the control signal of temperature control modules generation, do a logical operation, export control signal again, wherein when the sensing temperature value is higher than the heating stop temperature value of setting, sensing module can be exported low-potential signal, so as to making logical operation module output represent the control signal of powered-down, to reach the purpose of preferable temperature control heating.
For achieving the above object, according to principle of the present invention, the present invention discloses a kind of liquid bearing hard disk, the hard disk that includes tool temperature control heating arrangement comprises following modules: the liquid bearing hard disk, temperature sensing module, control module, power module and heating module, utilize temperature sensing module liquid towards bearing hard disk to carry out temperature sensing, by the sensed temperature value, judge the state of oil film in the present liquid bearing, control module receives sensing module sensed temperature value, produce corresponding control signal, power supply with unlatching or powered-down module, heating module produces heat energy by the power supply that power module provides, with heating liquid bearing hard disk, so as to reaching the purpose of keeping liquid bearing hard disk operate as normal.
For achieving the above object, according to principle of the present invention, the present invention discloses a kind of liquid bearing hard disk, the hard disk that includes tool temperature control heating arrangement comprises following modules: the liquid bearing hard disk, temperature sensing module, temperature control modules, logical operation module, power module and heating module, and for fear of the temperature control modules fault, the present invention utilizes logical operation module with the electric potential signal of sensing module generation and the control signal of temperature control modules generation, do a logical operation, export control signal again, wherein when the sensing temperature value is higher than the heating stop temperature value of setting, sensing module can be exported low-potential signal, so as to making logical operation module output represent the control signal of powered-down, to reach the purpose of preferable temperature control heating.
For achieving the above object, the disclosed control method that is applied to the temperature control heating arrangement of liquid bearing hard disk of the present invention includes: at first, set initial heating-up temperature and heating stop temperature, to start or stop heater heats; Detect the temperature of present hard disk bearing; According to the temperature value of detecting, judge whether to arrive the heating stop temperature of setting; If the detecting temperature is then closed the power supply of well heater more than or equal to the heating stop temperature of setting, the hard disk bearing is heated stopping; If the detecting temperature is smaller or equal to the initial heating-up temperature of setting, the power supply of heater then is to heat the hard disk bearing.
Can understand according to purpose of the present invention and principle and the invention has the advantages that the temperature control heating arrangement that is applied to the liquid bearing hard disk by this, can make the liquid bearing hard disk under abominable temperature environment condition, still can make the oil film in the liquid bearing keep liquid form, avoid oil film to produce physical aspects change, but make liquid bearing hard disk operate as normal because of temperature factor.
[description of drawings]
Fig. 1 is the disclosed system block diagrams of the present invention;
Fig. 2 is the disclosed embodiment system block diagrams of the present invention;
Fig. 3 is the disclosed circuit diagram of the present invention; And
Fig. 4 is the disclosed operation steps process flow diagram of the present invention.
[embodiment]
Please refer to Fig. 1, be system of the present invention block flow diagram, after the signal conditioning package start, the temperature value of the temperature sensing module 10 meeting sensing liquid bearing hard disks 150 in the temperature control heating arrangement 100, when sensing initial temperature value (i.e. liquid hard disk bearing 150 temperature values that sense for the first time), can produce the electric potential signal of a correspondence, and several back coupling temperature values of lasting sensing, and produce corresponding electric potential signal to control module 20.
Wherein temperature sensing module 10 can produce different electric potential signals according to the physical aspect inversion temperature characteristic of oil film in the liquid bearing, and when sensing temperature was higher than the physical aspect inversion temperature, oil film then presented liquid form, and produces corresponding electric potential signal; When sensing temperature was lower than the physical aspect inversion temperature, oil film then presented solid forms, and produced corresponding electric potential signal.
At this, lifting a concrete instance explains, a signal conditioning package that is equiped with liquid bearing hard disk temperature control heating arrangement, under the environment of subzero 25 degree Celsius, work, the initial heating-up temperature of temperature sensing circuit sensing is subzero 20 degree (by the sensing component design decision) Celsius, heating stop temperature is 10 degree Celsius, behind the electric power starting of signal conditioning package, temperature sensing component (example in the temperature sensing circuit, thermistor, thermal-induction type transistor switch 2N3904 and thermal-induction type integrated circuit ADM7301 etc.) carry out temperature sensing, wherein utilize temperature sensing component the value of having a resistance to change along with temperature, so as to making the signal of sensing circuit output different potentials, because environment temperature subzero 25 degree Celsius are lower than the initial heating-up temperature of sensing, oil film in expression liquid bearing this moment has presented the solidification form, therefore sensing circuit produces a high potential signal (example, 5 volts of voltages of direct current), power-supply controller of electric is behind the high potential signal that receives sensing circuit, heater (example, heating wire, ceramic heat plate etc.) power supply, to begin to heat liquid bearing, at this moment, sensing circuit still continues the temperature of sensing liquid bearing hard disk, when temperature rises more than or equal to heating stop temperature, sensing circuit produces a low-potential signal (example, 0 volt of voltage of direct current), power-supply controller of electric is behind the low-potential signal that receives sensing circuit, close the power supply of well heater, to stop to heat liquid bearing, in addition, in order to maintain the heating curves that can be maintained fixed under the different temperatures environment, (Pulse WidthModulation, PWM) control loop is reached, so as to reaching the purpose of temperature control heating also can to see through pulse-width regulated.
Next please refer to Fig. 2, be embodiments of the invention system block flow diagram, behind the signal conditioning package electric power starting, utilize a temperature control modules 50 to set initial heating-up temperature value and heating stop temperature value, next temperature sensing module 10 liquid towards bearing hard disks 150 carry out temperature sensing, and the electric potential signal of passback corresponding temperature value is given temperature control modules 50 and logical operation module 60 (examples, with door AND Gate logic switch), wherein temperature control modules 50 comprise one import out substantially system (Basic Input Output System, BIOS).
When the temperature value of passback be lower than (less than) during the initial heating-up temperature value set, temperature control modules 50 produces the electric power starting control signal to power module 30, power-on module 30 is to provide power supply to heating module 40, heating module 40 begins to produce heat energy, temperature sensing module 10 continues the sensing temperature values at this moment, and the electric potential signal of corresponding temperature value returned to temperature control modules 50, when the temperature value of passback during more than or equal to the heating stop temperature value set, temperature control modules 50 produces the power-off control signal to power module 30, to cut off the power supply of heating module 40, heating module 40 stops to produce heat energy with powered-down module 30.
(example when signal conditioning package produces fault, system in case of system halt etc.), open control signal (example and make temperature control modules 50 continue out-put supply, high potential signal) time, present embodiment utilizes logical operation module 60 (examples, with door AND Gate logic switch) characteristic, the electric potential signal of temperature sensing module 10 and the control signal of temperature control modules 50 are done a computing, when sensing temperature value during more than or equal to the heating stop temperature value, temperature sensing module 10 output low-potential signals are to logical operation module 60, so, logical operation module 60 is according to operation result output low-potential signal, just power-off control signal, so that power module 30 powered-downs, when avoiding system in case of system halt, heating module 40 continues heating, causes the infringement of liquid towards bearing hard disk.
In general, after the liquid bearing hard disk is started working, the heat energy that produces can make the temperature of hard disk rise to Celsius 40 to spend 50 degree Celsius and do not wait (need look ambient temperature), therefore, the oil film of temperature control heating arrangement fundamental purpose in making liquid bearing maintains the form of liquid, to guarantee signal conditioning package energy operate as normal, and after sensing temperature arrives a design temperature, stop the heating arrangement heating, to avoid hard disk to be in high-temperature work environment, lower hard disk life-span on the contrary or cause hard disk to be damaged.
In addition, please refer to Fig. 3, be circuit diagram of the present invention, include second resistance R, 2 one ends and be connected to positive 5 voltaism potential sources, its other end is connected to first node 1, the end of thermistor R6 is connected to first node 1, its other end ground connection is connected to positive 5 voltaism potential sources and second input end of comparer U2 is connected to an end of first node 1, the three resistance R 3, its other end is connected to Section Point 2, one end ground connection of the 7th resistance R 7, its other end is connected to Section Point 2, and second input end of comparer U2 is connected to Section Point 2, its the 12nd pin ground connection, the 3rd pin connect positive 5 voltaism potential sources and the 4th capacitor C 4.
Next, comparer U2 output terminal is connected to the first input end with door switch U3, one end of first resistance R 1 connects positive 5 voltaism potential sources, its other end is connected to the first input end with door switch U3, receive heating control signal HDD_HEAT_CTL with second input end of door switch U3, and the 3rd pin ground connection, the 5th pin connects positive 5 voltaism potential sources and the 5th capacitor C 5, its output terminal connects the base stage of transistor Q1, the grounded emitter of transistor Q1, the collector of transistor Q1 is connected to the positive 5 voltaism potential sources of a termination of the 3rd node 3, the four resistance R 4, and its other end is connected to the base stage of transistor Q1.
The grid of metal oxide semiconductor field effect tube U1 is connected to the 3rd node 3, its source electrode is connected to primary, voltage source DVMAIN and shunt capacitance first capacitor C 1, second capacitor C 2 and the 3rd capacitor C 3, its drain electrode is connected to heating power supply HDD_HEAT_V, the 5th resistance R 5 is connected between the 3rd node 3 and its source electrode, and the 6th capacitor C 6 and the drain electrode of diode D1 coupled in parallel to metal oxide semiconductor field effect tube U1.
Circuit operation is described as follows:
When the voltage on the thermistor R6 is lower than the protection voltage potential that sets; comparer U2 exports low-potential signal; this make with door switch U3 after computing; the output low-potential signal is to the base stage of transistor Q1; therefore not conducting of transistor Q1 (OFF); and the grid of metal oxide semiconductor field effect tube U1 can't trigger; therefore not conducting of metal oxide semiconductor field effect tube U1 (OFF); primary, voltage source DVMAIN can't be by metal oxide semiconductor field effect tube U1 to heating power supply HDD_HEAT_V; at this moment; well heater stops heating; in addition; when the voltage on the thermistor R6 was not lower than the protection voltage potential, holding circuit was failure to actuate, so still can be by heating control signal HDD_HEAT_CTL control heater; when promptly heating control signal HDD_HEAT_CTL and being high potential signal; heater heats, when heating control signal HDD_HEAT_CTL was low-potential signal, well heater stopped heating.
Please refer to Fig. 4, be operational flowchart of the present invention, at first, set initial heating-up temperature value and heating stop temperature value (step 200); Detect the temperature value (step 201) of present hard disk bearing; Temperature value according to detecting hard disk bearing judges whether to arrive heating stop temperature value (step 202); When the temperature of detecting hard disk bearing is less than or equal to the initial heating-up temperature value of setting, then start heating arrangement (step 203), so that the hard disk bearing is heated; When the temperature of detecting hard disk bearing is greater than or equal to the heating stop temperature value of setting, then close heating arrangement (step 204), the hard disk bearing is heated stopping.
By this temperature control heating arrangement and hard disk and the temperature-controlled process that is applied to the liquid bearing hard disk, utilize the temperature of sensing liquid bearing hard disk, heat with control heater, make the oil film in the liquid bearing maintain liquid form, guarantee liquid bearing hard disk operate as normal, solve the problem that the liquid bearing hard disk is worked and produced at low temperatures.
Claims (25)
1. temperature control heating arrangement that is applied to the liquid bearing hard disk is characterized in that this device comprises:
One temperature sensing module is in order to an initial temperature value and several back coupling temperature values of this liquid bearing hard disk of sensing;
One control module is connected in this temperature sensing module, according to this initial temperature value and these several feedback temperature value, produce corresponding control signal;
One power module is connected in this control module, according to this control signal, to open or to close the power supply of this power module, to provide or the stop supplies power supply; And
One heating module is connected in this power module, receives the power supply that this power module provides, to produce a heat energy to heat this liquid bearing hard disk.
2. temperature control heating arrangement as claimed in claim 1 is characterized in that: this sensing module comprises a thermistor.
3. temperature control heating arrangement as claimed in claim 1 is characterized in that: this heating module comprises a heating wire.
4. temperature control heating arrangement as claimed in claim 1 is characterized in that: this heating module comprises a ceramic heat plate.
5. temperature control heating arrangement that is applied to the liquid bearing hard disk is characterized in that this temperature control heating arrangement includes:
One temperature sensing module in order to the temperature value of this liquid bearing hard disk of sensing, and produces corresponding electric potential signal;
One temperature control modules in order to setting an initial heating-up temperature value and a heating stop temperature value, and is judged temperature value and this initial temperature value of setting and the difference of this heating stop temperature value of this temperature sensing module senses, to produce a control signal;
One logical operation module is connected in this temperature sensing module and this temperature control modules, in order to receiving this corresponding electric potential signal and this control signal, and after doing a logical operation, exports this control signal;
One power module receives this control signal, to open or to close the power supply of this power module; And
One heating module according to the power supply that this power module provides, starts this heating module, to produce a heat energy to this liquid bearing hard disk.
6. temperature control heating arrangement as claimed in claim 5 is characterized in that: this temperature sensing module comprises a thermistor.
7. temperature control heating arrangement as claimed in claim 6, it is characterized in that: in this temperature sensing module end of more comprising one second resistance be connected to a positive voltage source, its other end is connected to a first node, one end of this thermistor is connected to this first node, its other end ground connection, and the first input end of a comparer is connected to this first node, one end of one the 3rd resistance is connected to this positive voltage source, its other end is connected to a Section Point, one end ground connection of one the 7th resistance, its other end is connected to this Section Point, and second input end of this comparer is connected to this Section Point.
8. temperature control heating arrangement as claimed in claim 5 is characterized in that: this temperature control modules comprises a Basic Input or Output System (BIOS).
9. temperature control heating arrangement as claimed in claim 5 is characterized in that: this logical operation module comprise one with the gate logic switch.
10. temperature control heating arrangement as claimed in claim 9, it is characterized in that: this logical operation module more comprises this output terminal that is connected this comparer with the first input end of door switch, the first input end of this comparer is connected to this first node, second input end of this comparer is connected to this Section Point, should receive a heating control signal with second input end of door switch, its output terminal connects a transistorized base stage, this transistorized grounded emitter, this transistorized collector is connected to one the 3rd node.
11. temperature control heating arrangement as claimed in claim 5 is characterized in that: this heating module comprises a heating wire.
12. temperature control heating arrangement as claimed in claim 5 is characterized in that: this heating module comprises a ceramic heat plate.
13. the hard disk of a tool temperature control heating is characterized in that this hard disk includes:
One liquid bearing hard disk, in order to provide a signal conditioning package carry out data write/read/store required storage area;
One temperature sensing module is in order to initial temperature value and several back coupling temperature values of this liquid bearing hard disk of sensing;
One control module is connected in this temperature sensing module, according to this initial temperature value and these several feedback temperature value, produce corresponding control signal;
One power module receives this control signal, to open or to close the power supply of this power module, to provide or the stop supplies power supply; And
One heating module joins with this power module, receives the power supply that this power module provides, and starts this heating module, heats this liquid bearing hard disk to produce a heat energy.
14. hard disk as claimed in claim 13 is characterized in that: in this sensing module comprise a thermistor.
15. hard disk as claimed in claim 13 is characterized in that: this heating module comprises a heating wire.
16. hard disk as claimed in claim 13 is characterized in that: this heating module comprises a ceramic heat plate.
17. the hard disk of a tool temperature control heating is characterized in that this hard disk includes:
One liquid bearing hard disk, in order to provide a signal conditioning package carry out data write/read/store required storage area;
One temperature sensing module is in order to initial temperature value and several back coupling temperature values of this liquid bearing hard disk of sensing;
One temperature control modules in order to setting an initial heating-up temperature value and a heating stop temperature value, and is judged temperature value and this initial temperature value of setting and the difference of this heating stop temperature value of this temperature sensing module senses, to produce a control signal;
One logical operation module is connected in this temperature sensing module and this temperature control modules, in order to receiving this corresponding electric potential signal and this control signal, and after doing a logical operation, exports this control signal;
One power module receives this control signal, to open or to close the power supply of this power module, to provide or the stop supplies power supply; And
One heating module joins with this power module, receives the power supply that this power module provides, and starts this heating module, heats this liquid bearing hard disk to produce a heat energy.
18. hard disk as claimed in claim 17 is characterized in that: this temperature sensing module comprises a thermistor.
19. hard disk as claimed in claim 18, it is characterized in that: the end that this temperature sensing module more comprises one second resistance is connected to a positive voltage source, its other end is connected to a first node, one end of this thermistor is connected to this first node, the other end ground connection of this thermistor, and the first input end of a comparer is connected to this first node, one end of one the 3rd resistance is connected to this positive voltage source, its other end is connected to a Section Point, one end ground connection of one the 7th resistance, its other end is connected to this Section Point, and second input end of this comparer is connected to this Section Point.
20. hard disk as claimed in claim 17 is characterized in that: this temperature control modules comprises a Basic Input or Output System (BIOS).
21. hard disk as claimed in claim 17 is characterized in that: in this logical operation module comprise one with the gate logic switch.
22. hard disk as claimed in claim 21, it is characterized in that: this logical operation module more comprises this output terminal that is connected this comparer with the first input end of door switch, the first input end of this comparer is connected to this first node, second input end of this comparer is connected to this Section Point, should receive a heating control signal with second input end of door switch, its output terminal connects a transistorized base stage, this transistorized grounded emitter, and this transistorized collector is connected to one the 3rd node.
23. hard disk as claimed in claim 17 is characterized in that: this heating module comprises a heating wire.
24. hard disk as claimed in claim 17 is characterized in that: this heating module comprises a ceramic heat plate.
25. a control method that is applied to the temperature control heating arrangement of liquid bearing hard disk is characterized in that this control method includes:
Set an initial heating-up temperature and a heating stop temperature;
Detect the temperature of this liquid bearing hard disk;
Equal this initial heating-up temperature when this temperature is lower than, open the power supply of this temperature control heating arrangement, to heat; And
When this temperature more than or equal to this heating stop temperature, close the power supply of this temperature control heating arrangement, with stop the heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100334624A CN1831694B (en) | 2005-03-11 | 2005-03-11 | Temp-control heating device for hydraulic bearing hard disk and its hard disk and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100334624A CN1831694B (en) | 2005-03-11 | 2005-03-11 | Temp-control heating device for hydraulic bearing hard disk and its hard disk and control method |
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| Publication Number | Publication Date |
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| CN1831694A true CN1831694A (en) | 2006-09-13 |
| CN1831694B CN1831694B (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2005100334624A Active CN1831694B (en) | 2005-03-11 | 2005-03-11 | Temp-control heating device for hydraulic bearing hard disk and its hard disk and control method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562038B (en) * | 2008-04-17 | 2011-01-19 | 研祥智能科技股份有限公司 | Method and device for controlling temperature of hard disc |
| CN102681571A (en) * | 2011-03-15 | 2012-09-19 | 神基科技股份有限公司 | Heating circuit, electronic device and method for entering operation mode under low temperature environment |
| CN103228118A (en) * | 2012-01-31 | 2013-07-31 | 神讯电脑(昆山)有限公司 | Acceleration starting module of electronic device and method thereof |
| CN110794896A (en) * | 2019-10-31 | 2020-02-14 | 太原理工大学 | Temperature control heat preservation circuit based on water and ice conductivity difference |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2053696U (en) * | 1989-06-27 | 1990-02-28 | 北京市联企业现代化系统工程开发公司 | Bearing race induction heating apparatus using microcomputer to control temp. |
| US20040228023A1 (en) * | 2003-05-12 | 2004-11-18 | Keller Lee A. | Method and apparatus for heating a disk drive |
-
2005
- 2005-03-11 CN CN2005100334624A patent/CN1831694B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562038B (en) * | 2008-04-17 | 2011-01-19 | 研祥智能科技股份有限公司 | Method and device for controlling temperature of hard disc |
| CN102681571A (en) * | 2011-03-15 | 2012-09-19 | 神基科技股份有限公司 | Heating circuit, electronic device and method for entering operation mode under low temperature environment |
| CN102681571B (en) * | 2011-03-15 | 2015-02-04 | 神基科技股份有限公司 | Heating circuit, electronic device and method for entering operation mode under low temperature environment |
| CN103228118A (en) * | 2012-01-31 | 2013-07-31 | 神讯电脑(昆山)有限公司 | Acceleration starting module of electronic device and method thereof |
| CN103228118B (en) * | 2012-01-31 | 2015-11-25 | 神讯电脑(昆山)有限公司 | The acceleration of electronic installation starts module and method thereof |
| CN110794896A (en) * | 2019-10-31 | 2020-02-14 | 太原理工大学 | Temperature control heat preservation circuit based on water and ice conductivity difference |
| CN110794896B (en) * | 2019-10-31 | 2021-06-15 | 太原理工大学 | Temperature control heat preservation circuit based on water and ice conductivity difference |
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|---|---|
| CN1831694B (en) | 2010-06-23 |
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