CN101651335B - Electronic equipment protection device and electronic equipment - Google Patents
Electronic equipment protection device and electronic equipment Download PDFInfo
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- CN101651335B CN101651335B CN2009101742120A CN200910174212A CN101651335B CN 101651335 B CN101651335 B CN 101651335B CN 2009101742120 A CN2009101742120 A CN 2009101742120A CN 200910174212 A CN200910174212 A CN 200910174212A CN 101651335 B CN101651335 B CN 101651335B
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Abstract
The invention discloses an electronic equipment protection device and electronic equipment for solving the problems that the operation of the electronic equipment can be recovered by switching off the power of the electronic equipment when environmental parameters satisfy the reset requirements in the prior art. The device comprises a first power source conversion module (10) and a second power source conversion module (30), wherein the first power source conversion module (10) is used for converting an external power source voltage into a working voltage needed by a control isolating circuit (40); a voltage output by the control isolating circuit (40) to the second power source conversion module (30) in the electronic equipment is lower than an off voltage of the second power source conversion module (30) when a sensor output pin of the control isolating circuit (40) outputs a preset alarm voltage; the voltage output to the second power source conversion module (30) is not lower than the off voltage of the second power source conversion module (30) when the sensor output pin is in an open-drain state; and the second power source conversion module (30) outputs a zero voltage when an input voltage of the control isolating circuit (40) is lower than the off voltage of the second power source conversion module (30) or else the external power source voltage is converted into a voltage needed by a load in the electronic equipment.
Description
Technical field
The present invention relates to the electronic circuit technology field, relate in particular to a kind of electronic equipment protection device and a kind of electronic equipment.
Background technology
Various electronic equipments such as computer, router, switch cause the temperature of electronic equipment too high owing to the cooling ventilation units such as fan in the electronic equipment break down sometimes, thereby may shorten in the electronic equipment, even the serious consequence that may cause components and parts to be burnt to temperature requirement useful life of harsh components and parts such as chip relatively.
Prior art has proposed electronic equipment overheat protector scheme to address the above problem.The basic functional principle of existing overheat protector scheme is for being placed in a plurality of temperature sensors on the temperature collection point in the electronic equipment; during for example to computer-implemented overheat protector; temperature sensor is placed in CPU radiating fin; Hard Disk Drives etc. are located; when a temperature sensor detects temperature and is higher than set point therein; the overheat protector control program feedback information that in computer or other electronic equipments, moves; the overheat protector control program gives a warning to the user; predetermined amount of time user after giving a warning does not take to close electronic equipment etc. when helping reducing the measure of electronic equipment temperature yet, and the overheat protector control program will be carried out data on file; the action of cutting off the electricity supply is to prevent the persistently overheating adverse consequences that may cause of electronic equipment.
Yet there is following problem in such scheme:
After overheat protector control program in running on electronic equipment cuts off the power supply of electronic equipment; though can reach the purpose that reduces temperature; but this control program itself that operates in the electronic equipment also just can't move; and the temperature sensor that has also needs the power supply supply to work; and temperature sensor all provides power supply by electronic equipment usually in the existing scheme; unless therefore follow-uply manually restart electronic equipment, otherwise electronic equipment; and operate in overheat protector control program in the electronic equipment; temperature sensors etc. are reworked after can't be in temperature is reduced to preset range automatically.Need be for the electronic equipment of long-term work under the unattended operation environment for router, switch etc., when needs shorten time of service interruption as far as possible, above-mentioned overheat protector scheme will be difficult to meet the demands.
Except above-mentioned overheat protector scheme based on temperature sensor; electronic equipment protection scheme by means of the transducer that detects other environmental parameters such as dust density, humidity also is difficult to after environmental parameter satisfies pre-provisioning request electronic equipment be reworked not having under the artificial condition that participates in similarly.
Summary of the invention
The embodiment of the invention provides a kind of electronic equipment protection device, can't be after cutting off electronic equipment power source in order to solve prior art, and the problem that when environmental parameter satisfies pre-provisioning request, electronic equipment is resumed work.
The technical scheme that the embodiment of the invention provides is as follows:
A kind of electronic equipment protection device; comprise the first power conversion module (10) and control buffer circuit (40); described control buffer circuit (40) is connected with second source conversion module (30) in the described electronic equipment; described second source conversion module (30) is used to the load in the described electronic equipment that operating voltage is provided, wherein:
The first power conversion module (10) is used for the voltage transformation of external power source is the required operating voltage of control buffer circuit (40);
Control buffer circuit (40), when alarm voltage is scheduled in the environmental parameter transducer output pin output on being placed in described electronic equipment, be lower than the voltage of closing of second source conversion module (30) to the voltage of second source conversion module (30) output, when described environmental parameter transducer output pin is in out the leakage state, draw high the voltage of environmental parameter transducer output pin by the operating voltage that the first power conversion module (10) provides to control buffer circuit (40) input, be not less than the voltage of closing of second source conversion module (30) to the voltage of second source conversion module (30) output, the predetermined alarm of output voltage was in out the leakage state when output pin of described environmental parameter transducer surpassed predetermined value at the detected value of environmental parameter when the detected value of environmental parameter does not surpass predetermined value;
Second source conversion module (30), from control buffer circuit (40) input voltage be lower than second source conversion module (30) close voltage the time, output voltage is zero, the voltage from control buffer circuit (40) input be not less than second source conversion module (30) close voltage the time, be the required operating voltage of load in the electronic equipment with the voltage transformation of external power source.
A kind of electronic equipment protection device; comprise the first power conversion module (10), logical device (70), control buffer circuit (40); described electronic equipment protection device is connected with second source conversion module (30) in the described electronic equipment; described second source conversion module (30) is used to the load in the described electronic equipment that operating voltage is provided, wherein:
The first power conversion module (10) is used for the voltage transformation of external power source is the required operating voltage of control buffer circuit (40);
Logical device (70) receives at least one output voltage that is placed in the environmental parameter transducer output pin on the described electronic equipment, the predetermined alarm of output voltage was in out the leakage state when output pin of described environmental parameter transducer surpassed predetermined value at the detected value of environmental parameter when the detected value of environmental parameter does not surpass predetermined value;
Logical device (70) when having the predetermined alarm of environmental parameter transducer output pin output voltage at least, outputting alarm voltage, otherwise, no-output voltage;
Control buffer circuit (40) is when logical device (70) no-output voltage, draw high the voltage of logical device (70) input by the operating voltage that the first power conversion module (10) provides, be not less than the voltage of closing of second source conversion module (30) to the voltage of second source conversion module (30) output, when the described alarm voltage of logical device (70) output, be lower than the voltage of closing of second source conversion module (30) to the voltage of second source conversion module (30) output;
Second source conversion module (30), from control buffer circuit (40) input voltage be lower than second source conversion module (30) close voltage the time, output voltage is zero, the voltage from control buffer circuit (40) input be not less than second source conversion module (30) close voltage the time, be the required operating voltage of load in the electronic equipment with the voltage transformation of external power source.
A kind of electronic equipment comprises second source conversion module (30) and described electronic equipment protection device, and described second source conversion module (30) is used to the load in the described electronic equipment that operating voltage is provided.
The first power conversion module in the electronic equipment protection device that the embodiment of the invention proposes is first voltage with the voltage transformation of external power source, for the control buffer circuit provides power supply, the control buffer circuit when environmental parameter surpasses preset range, indicates the second source conversion module not provide operating voltage to electronic equipment in the environmental parameter sensor; When environmental parameter returned to preset range, indicate the second source conversion module was the operating voltage of electronic equipment with the voltage transformation that external power source provides to the control buffer circuit, and offers to electronic equipment in the environmental parameter sensor.
Description of drawings
Fig. 1 is the structured flowchart of the electronic equipment protection device of embodiment of the invention proposition;
Fig. 2 is the operation principle block diagram of employed a kind of switching power supply in the embodiment of the invention;
A kind of circuit diagram of controlling buffer circuit that Fig. 3 provides for the embodiment of the invention;
The another kind that Fig. 4 provides for the embodiment of the invention is controlled the circuit diagram of buffer circuit;
The structured flowchart of a kind of electronic equipment that Fig. 5 provides for the embodiment of the invention;
Fig. 6 provides the improved electronic devices structure block diagram that can guarantee the correct electric sequence of components and parts in the electronic equipment for the embodiment of the invention;
The structured flowchart of the electronic equipment protection device of the multidrop environment the monitored parameter that Fig. 7 provides for the embodiment of the invention.
Embodiment
Because when the sensor of existing electronic equipment protection scheme environmental parameter collection point in being placed in electronic equipment surpasses preset range to the environmental parameter of current periphery; the defence program that runs in the electronic equipment can adopt the mode of cutting off the electricity supply to prevent that environmental parameter from continuing to worsen usually; for example temperature continues rising etc., protects the components and parts of electronic equipment not to be damaged with this., such scheme do not having under the artificial situation about participating in the problem that can't after the environmental parameter of electronic equipment is improved, electronic equipment be resumed work yet existing.
The embodiment of the invention is utilized the on state characteristic of triode, externally between power supply and the electronic equipment, increase control buffer circuit and power transfer module, in described control buffer circuit, comprise triode, electronic device by being independent of electronic equipment rather than the control program in the electronic equipment come when to stop and reverting to electronic equipment the power supply supply is provided according to the FEEDBACK CONTROL of transducer.
To introduce an embodiment in detail and come the main realization principle of the inventive method is explained in detail and illustrates according to foregoing invention principle of the present invention below.
Please refer to accompanying drawing 1, the structured flowchart of the electronic equipment protection device that proposes for the embodiment of the invention.This device comprises the first power conversion module 10 and isolation control circuit 40, and wherein isolation control circuit 40 is connected with second source conversion module 30 in the described electronic equipment.The required operating voltage of load in the existing electronic equipment (comprising each components and parts) has very big-difference, and the voltage that external power source provides all has unified standard usually, the voltage that for example common external power source provides is 12v, all be built-in with second source conversion module (30) in therefore a lot of electronic equipments, the voltage transitions that is used for the attaching plug of electronic equipment is imported is the operating voltage of the load needs of described electronic equipment, and offers the load in the electronic equipment.
The first power conversion module 10 is connected between external power source and the control buffer circuit 40, is used for the input voltage with external power source, and for example common 12v voltage transformation is the required operating voltage of control buffer circuit 40, for example 3.3v voltage.In the present embodiment because environmental parameter transducer 20 needs 3v～5.5v voltage supply to work, therefore the first power conversion module 10 also is used for being connected with the input of environmental parameter transducer 20, be used for 12v voltage transformation with external power source and be the required operating voltage 3.3v of environmental parameter transducer 20, so no matter whether be cut off for the power supply that the load in the electronic equipment provides by the second voltage transformation module 30, as long as external power source is normal, environmental parameter transducer 20 can be worked, and can be as prior art, after the power supply of electronic equipment was cut off, environmental parameter transducer 20 also can't have been worked.
Second source conversion module 30 possesses input pin 301, feedback compensation pin 302 and output pin 303, be used under the control of feedback compensation pin 302, the voltage transformation that the external power source that input pin 301 is connected provides is a predetermined output voltage, and described predetermined output voltage can be the required operating voltage of electronic equipment.When using existing DC-DC power supply as second source conversion module 30, the feedback compensation pin is COMP (compensation) pin.Second source conversion module 30 is lower than the voltage of closing of self at the input voltage of feedback compensation pin 302, when being the voltage transitions threshold value, for example during 0.3v, not carrying out voltage transformation and handle, output pin no-output voltage or output voltage are zero level, and the power supply that provides to electronic equipment promptly is provided; Be higher than described when closing voltage at the input voltage of feedback compensation pin, for example during 0.3v, the 12v voltage transformation that external power source is provided is the required operating voltage 1.2v of electronic equipment, and the 1.2v voltage that obtains after with conversion by output pin offers electronic equipment.In the present embodiment, the feedback compensation pin 302 of second source conversion module 30 is connected with the output 403 of control buffer circuit 40.The input pin 301 of second source conversion module 30 is connected with external power source.
Above-mentioned second source conversion module 30 can be realized by existing switching power supply.Please refer to accompanying drawing 2, be the structural representation of existing a kind of switching power supply DC-DC power supply.Comprise a DC-DC controller, switch A and two electronic switches of switch B and FEEDBACK CONTROL pin in this switching power supply.During the work of this switching power supply, periodically open or close switch A or switch B produces the one-period square wave, by inductance and electric capacity above-mentioned square wave is carried out the VD that shaping filter obtains output pin output stably then.The COMP pin can be connected output pin place monitoring output voltage, the DC-DC controller is adjusted the switching time of switch A and switch B with definite output voltage by the feedback signal of COMP pin, and the stability that guarantees output voltage.When the input voltage of COMP pin is lower than predetermined value, does not carry out voltage transformation and handle no-output voltage.
Prime second source conversion module 30 should be selected the higher switching power supply of conversion efficiency for use in accompanying drawing 1, in order to avoid cause excessive transition loss.
The function of above-mentioned control buffer circuit 40 can be realized by single-chip microcomputer, also can adopt the circuit of following structure to realize.
Circuit one
Please refer to accompanying drawing 3, resistance R 2 is connected the first input end 401 of control buffer circuit 40 and controls between second input 402 of buffer circuit 40;
The collector electrode of triode Q1 is connected with second input 402 by resistance R 3, and the collector electrode of triode Q1 is connected the grounded emitter of triode Q1 by resistance R 4 with the base stage of triode Q2;
The collector electrode of triode Q2 is connected grounded emitter with output 403.
Circuit two
Please refer to accompanying drawing 4,, the filter capacitor C of a ground connection can also be connected with first input end 401 in order to guarantee the stability of first input end 401 input voltages in the accompanying drawing 3.
For the ease of follow-up control buffer circuit 40 is tested; the collector electrode of triode Q2 can also be connected with output 403 by resistance R 5; when need not to use this electronic equipment protection device; only need R5 is extractd, and direct the connection with the output 403 of controlling buffer circuit 40 of external power source got final product.
Detect temperature value in normal range (NR) the time at environmental parameter transducer 20, the output pin of environmental parameter transducer 20 is in out the leakage state, the voltage at second input, 402 places of the control buffer circuit 40 that is connected with environmental parameter transducer 20 output pins is drawn high by the voltage at first input end 401 places, the base stage of triode Q1 also is in high level in the accompanying drawing 3, makes V
Be＞V
OnThereby, make triode Q1 be in conducting state, the voltage of triode Q1 collector electrode is dragged down, thereby the base voltage of triode Q2 is dragged down, and makes V
Be＜V
OnTriode Q2 is in off state, therefore the collector electrode of the triode Q2 that is connected with the output 403 of control buffer circuit 40 is in high level, the second source conversion module 30 that the output 403 of control buffer circuit 40 connects is higher than self the voltage of closing at the input voltage of feedback compensation pin, so the 12v voltage transformation that second source conversion module 30 provides external power source is the required operating voltage 1.2v of electronic equipment.Environmental parameter transducer 20 output pins are in out the leakage state, and when the voltage that the voltage at second input, 402 places is imported by first input end 401 was drawn high, the voltage at second input, 402 places should be higher than the conducting voltage of triode Q1.
When environmental parameter transducer 20 detects the temperature value overrun, the predetermined alarm of the output pin output voltage of environmental parameter transducer 20, be alarm voltage 0.3v in the present embodiment, at this moment the voltage of second input 402 of the control buffer circuit 40 that is connected with environmental parameter transducer 20 output pins is also dragged down, this alarm voltage should be lower than the conducting voltage of triode Q1, the base stage of triode Q1 also is in low level in the accompanying drawing 3, makes B1
Be＜V1
OnThereby, make triode Q1 be in off state, the voltage of triode Q1 collector electrode is drawn high, thereby makes also corresponding being drawn high of base voltage of triode Q2, makes V2
Be＞V2
OnTriode Q2 is in conducting state, therefore the collector electrode of the triode Q2 that is connected with the output 403 of control buffer circuit 40 is in low level, the second source conversion module 30 that be connected with the output 403 of control buffer circuit 40 this moment is lower than the voltage of closing of self at the input voltage of feedback compensation pin, therefore second source conversion module 30 no longer carries out the voltage transformation processing, cuts off offering the operating voltage to the 1.2v of electronic equipment.
Electronic equipment protection device shown in the accompanying drawing 1 can be designed as the module that is independent of electronic equipment, and the connected mode by as shown in Figure 1 is connected with the electronic equipment that will protect; Also can be used as a functional module in the electronic equipment, promptly a kind of electronic equipment with defencive function please refer to shown in the accompanying drawing 5.
Different chips in the electronic equipment, the operating voltage difference that components and parts are required, the components and parts that for example have need the 5v operating voltage, and other components and parts need 3.3v, 2.5v, 1.8v or the operating voltage of 1.2v, and there is the requirement of electrifying timing sequence between the components and parts of different operating voltage, for example, operating voltage is that the components and parts of 1.2v need be powered on before the components and parts of other operating voltages, therefore 1.2v can be used as second level voltage, other voltages can obtain by the conversion of voltage transformation module by the second level voltage of 1.2v is follow-up, as the 3rd pole tension, fourth stage voltage etc.Please refer to accompanying drawing 6; the electronic equipment with defencive function that present embodiment provides can also comprise second level circuit; including control buffer circuit 50 and the 3rd power conversion module 60 in the circuit of the second level, whether control buffer circuit 50 to control the 3rd power conversion module 60 be third level voltage with the voltage transitions of external power source if being used for second level voltage that 5 second source conversion module 30 with reference to the accompanying drawings changes.The structure function of the control buffer circuit 40 in control buffer circuit 50 and accompanying drawing 1 or the accompanying drawing 5 is similarly, and second input 502 that difference is to control buffer circuit 50 is to be connected with the output of second source conversion module 30 in the accompanying drawing 4.
In like manner, tertiary circuit, fourth stage circuit can also be arranged, wherein the control buffer circuit in every grade of circuit is according to the output voltage of the second source conversion module in the previous stage circuit, whether with the voltage transitions of external power source be fourth stage voltage or level V voltage, here no longer describe in detail if controlling power conversion module at the corresponding levels.
Can guarantee the correct electrifying timing sequence of each components and parts in the electronic equipment by such scheme, avoid the components and parts in the electronic equipment being caused loss because of the electric sequential that powers on down is improper.
Preferably; electronic equipment protection device in the accompanying drawing 1 can also have following expansion scheme; please refer to accompanying drawing 7; can settle environmental parameter transducer 201～environmental parameter transducer 209 in a plurality of environmental parameters collection point of electronic equipment; with environmental parameter transducer 201～environmental parameter transducer 209; the signal of the output pin of a plurality of environmental parameter transducers be input in the logical device 70 carry out AND-operation after; the output signal of logical device 70 is connected to second input of control buffer circuit; because the predetermined alarm voltage of the output of environmental parameter transducer is low level; with numeral is " 0 "; as long as therefore there is one of them environmental parameter sensor to surpass preset range to temperature or other environmental parameter detected values of the collection point of settling this environmental parameter transducer; behind logical device 70 AND-operations; low level of capital output; thereby be cut to the working power that electronic equipment provides, realize the purpose of protection.When only the environmental parameter in all collection points all met pre-provisioning request, electronic equipment can obtain working power.
Expansion scheme in the accompanying drawing 7 can be used in combination with the scheme in the accompanying drawing 6.
The electronic equipment protection device that the embodiment of the invention proposes is simple in structure, and environmental parameter transducer and a spot of triode can not consume too much electric energy, can obviously not influence the temperature of electronic equipment periphery yet.
The embodiment of the invention has proposed to be independent of the electronic equipment protection device of electronic equipment, the first power conversion module in this device is first voltage with the voltage transformation of external power source, for environmental parameter transducer and control buffer circuit provide power supply, the control buffer circuit when environmental parameter surpasses preset range, indicates the second source conversion module not provide operating voltage to electronic equipment in the environmental parameter sensor; To environmental parameter during at preset range, indicate the second source conversion module is the operating voltage of electronic equipment with the voltage transformation that external power source provides to the control buffer circuit, and offers to electronic equipment in the environmental parameter sensor.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1. electronic equipment protection device; it is characterized in that; comprise the first power conversion module (10) and control buffer circuit (40); described control buffer circuit (40) is connected with second source conversion module (30) in the described electronic equipment; described second source conversion module (30) is used to the load in the described electronic equipment that operating voltage is provided, wherein:
The first power conversion module (10) is used for the voltage transformation of external power source is the required operating voltage of control buffer circuit (40);
Control buffer circuit (40), when alarm voltage is scheduled in the environmental parameter transducer output pin output on being placed in described electronic equipment, be lower than the voltage of closing of second source conversion module (30) to the voltage of second source conversion module (30) output, when described environmental parameter transducer output pin is in out the leakage state, draw high the voltage of environmental parameter transducer output pin by the operating voltage that the first power conversion module (10) provides to control buffer circuit (40) input, be not less than the voltage of closing of second source conversion module (30) to the voltage of second source conversion module (30) output, the predetermined alarm of output voltage was in out the leakage state when output pin of described environmental parameter transducer surpassed predetermined value at the detected value of environmental parameter when the detected value of environmental parameter does not surpass predetermined value;
Second source conversion module (30), from control buffer circuit (40) input voltage be lower than second source conversion module (30) close voltage the time, output voltage is zero, the voltage from control buffer circuit (40) input be not less than second source conversion module (30) close voltage the time, be the required operating voltage of load in the electronic equipment with the voltage transformation of external power source.
2. device as claimed in claim 1, it is characterized in that, when the environmental parameter transducer needs working power, the described first power conversion module (10) also is used for the input voltage of external power source is transformed to the required operating voltage of environmental parameter transducer, and the voltage after the conversion is offered the environmental parameter transducer.
3. device as claimed in claim 1 is characterized in that, described control buffer circuit (40) comprising:
Resistance R 2 is connected the first input end (401) that is used to receive the voltage after first power conversion module (10) conversion and is used to receive between second input (402) of described environmental parameter transducer output pin output voltage;
Resistance R 1 is connected between the base stage of described second input (402) and triode Q1;
Triode Q1, its collector electrode is connected with described first input end (401) by resistance R 3, and the collector electrode of triode Q1 is connected the grounded emitter of triode Q1 by resistance R 4 with the base stage of triode Q2;
Triode Q2, its collector electrode is connected grounded emitter with the output (403) that is used for to second source conversion module (30) output voltage;
The described predetermined alarm voltage of described environmental parameter transducer output pin output is lower than the conducting voltage of triode Q1, when described environmental parameter transducer output pin was in out the leakage state, the voltage that second input (402) is located was not less than the conducting voltage of triode Q1;
The operating voltage of described first input end (401) input is greater than the conducting voltage of triode Q2;
During triode Q2 conducting, the voltage of control buffer circuit (40) output (403) output is lower than the voltage of closing of second source conversion module (30), when triode Q2 turn-offed, the voltage of control buffer circuit (40) output (403) output was not less than the voltage of closing of second source conversion module (30).
4. device as claimed in claim 3 is characterized in that, the first input end (401) of described control buffer circuit (40) is by filter capacitor ground connection.
5. device as claimed in claim 3 is characterized in that, in the described control buffer circuit (40), the collector electrode of triode Q2 is connected with output (403) by resistance R 5.
6. device as claimed in claim 1 is characterized in that, the described first power conversion module (10) is a linear voltage regulator.
7. device as claimed in claim 1 is characterized in that, described second source conversion module (30) is a switching power supply.
8. electronic equipment protection device; it is characterized in that; comprise the first power conversion module (10), logical device (70), control buffer circuit (40); described electronic equipment protection device is connected with second source conversion module (30) in the described electronic equipment; described second source conversion module (30) is used to the load in the described electronic equipment that operating voltage is provided, wherein:
The first power conversion module (10) is used for the voltage transformation of external power source is the required operating voltage of control buffer circuit (40);
Logical device (70) receives at least one output voltage that is placed in the environmental parameter transducer output pin on the described electronic equipment, the predetermined alarm of output voltage was in out the leakage state when output pin of described environmental parameter transducer surpassed predetermined value at the detected value of environmental parameter when the detected value of environmental parameter does not surpass predetermined value;
Logical device (70) when having the predetermined alarm of environmental parameter transducer output pin output voltage at least, outputting alarm voltage, otherwise, no-output voltage;
Control buffer circuit (40) is when logical device (70) no-output voltage, draw high the voltage of logical device (70) input by the operating voltage that the first power conversion module (10) provides, be not less than the voltage of closing of second source conversion module (30) to the voltage of second source conversion module (30) output, when the described alarm voltage of logical device (70) output, be lower than the voltage of closing of second source conversion module (30) to the voltage of second source conversion module (30) output;
Second source conversion module (30), from control buffer circuit (40) input voltage be lower than second source conversion module (30) close voltage the time, output voltage is zero, the voltage from control buffer circuit (40) input be not less than second source conversion module (30) close voltage the time, be the required operating voltage of load in the electronic equipment with the voltage transformation of external power source.
9. an electronic equipment is characterized in that, comprises second source conversion module (30) and as the arbitrary described electronic equipment protection device of claim 1～8, described second source conversion module (30) is used to the load in the described electronic equipment that operating voltage is provided.
10. electronic equipment as claimed in claim 9 is characterized in that, the required operating voltage of the load in the described electronic equipment is to need the required second level predetermined voltage of components and parts that powers at first in the described electronic equipment.
11. electronic equipment as claimed in claim 10, it is characterized in that, also comprise the second control buffer circuit (50), the 3rd power conversion module (60), described the 3rd power conversion module (60) is used to the components and parts that need power on after the described components and parts that power at first power in the described electronic equipment that third level predetermined voltage is provided, wherein:
The second control buffer circuit (50) is when second source conversion module (30) output voltage is zero, be lower than the voltage of closing of the 3rd power conversion module (60) to the voltage of the 3rd power conversion module (60) output, when the predetermined voltage of the described second level of second source conversion module (30) output, be not less than the voltage of closing of the 3rd power conversion module (60) to the voltage of the 3rd power conversion module (60) output;
The 3rd power conversion module (60), from second control buffer circuit (50) input voltage be lower than the 3rd power conversion module (60) close voltage the time, output voltage is zero, the voltage from second control buffer circuit (50) input be not less than the 3rd power conversion module (60) close voltage the time, be the required third level predetermined voltage of load in the electronic equipment with the voltage transformation of external power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101742120A CN101651335B (en) | 2009-09-23 | 2009-09-23 | Electronic equipment protection device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101742120A CN101651335B (en) | 2009-09-23 | 2009-09-23 | Electronic equipment protection device and electronic equipment |
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| Publication Number | Publication Date |
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| CN101651335A CN101651335A (en) | 2010-02-17 |
| CN101651335B true CN101651335B (en) | 2011-08-17 |
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| CN2009101742120A Expired - Fee Related CN101651335B (en) | 2009-09-23 | 2009-09-23 | Electronic equipment protection device and electronic equipment |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075671B (en) * | 2010-11-02 | 2013-03-27 | 深圳一电科技有限公司 | Hands-free high-definition digital camera |
| CN102004537B (en) * | 2010-11-04 | 2016-03-02 | 中兴通讯股份有限公司 | System power-on and power-off control device and method |
| CN102243481B (en) * | 2011-03-28 | 2013-04-24 | 上海华为技术有限公司 | Device, method and circuit for realizing interconnection between modules powered by different power supplies |
| CN105807878B (en) * | 2014-12-27 | 2019-03-08 | 鸿富锦精密工业(武汉)有限公司 | Power electronic equipment protects system |
| CN105783271A (en) * | 2016-03-28 | 2016-07-20 | 李连洪 | Control system applied to water heater and intelligent water heater |
| CN109188976A (en) * | 2018-09-14 | 2019-01-11 | 珠海格力电器股份有限公司 | Control chip |
| CN110377078B (en) * | 2019-07-31 | 2020-12-15 | 中国科学院国家天文台 | Method and device for controlling working temperature of electronic device in low-temperature environment |
| CN110941326B (en) * | 2019-09-30 | 2022-02-22 | 维沃移动通信有限公司 | Voltage control method and electronic equipment |
| CN111449398A (en) * | 2020-04-10 | 2020-07-28 | 揭阳市恩美五金电器实业有限公司 | Hair drier with temperature detection function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1549073A (en) * | 2003-05-10 | 2004-11-24 | 华为技术有限公司 | Temperature controlling apparatus and method thereof |
| CN201001028Y (en) * | 2006-09-29 | 2008-01-02 | Bcd半导体制造有限公司 | Single chip type switch power source and overtemperature protective circuit thereof |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2002-315181A 2002.10.25 |
| JP特开2003-209922A 2003.07.25 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101651335A (en) | 2010-02-17 |
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Address after: 350002 19 Building, Citrus Industrial Park, 618 Jinshan Road, Cangshan District, Fuzhou, Fujian. Patentee after: RUIJIE NETWORKS Co.,Ltd. Address before: 350002 19 Building, Citrus Industrial Park, 618 Jinshan Road, Cangshan District, Fuzhou, Fujian. Patentee before: Fujian Star-net Ruijie Network Co.,Ltd. |
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