CN105098719A - Error detecting apparatus and method with multiple protections - Google Patents
Error detecting apparatus and method with multiple protections Download PDFInfo
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- CN105098719A CN105098719A CN201410189281.XA CN201410189281A CN105098719A CN 105098719 A CN105098719 A CN 105098719A CN 201410189281 A CN201410189281 A CN 201410189281A CN 105098719 A CN105098719 A CN 105098719A
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Abstract
The invention relates to an error detecting apparatus and method with multiple protections. The error detecting apparatus comprises a plurality of protective circuits, a detection recording circuit, and a switch module. According to the method, when at least one of a plurality of power supply circuit is faulted, the protective circuits corresponding to the faulted power supply circuits output protective signals in order to shut down the faulted power supply circuits and the detection recording circuit records error data according to the protective signals, wherein the error data corresponds to the faulted power supply circuits. Therefore, which power supply circuit is faulted can be known according to the error data such that response time for removing system errors is shortened.
Description
[technical field]
The present invention about a kind of error detection device and error detection method, the error detection device of its espespecially a kind of tool multiple protective and error detection method.
[background technology]
Power circuit (Powersupplycircuit) is the voltage and/or electric current that provide load one stable.In order to provide the operating environment of user and an electronic installation safety and meet safety; power circuit now all has a protective circuit; with guarantee in be short-circuited or overcurrent etc. is abnormal, erroneous condition time; the power output of restriction power circuit or further stopping power circuit running, be subject to permanent infringement to avoid power circuit and connected load.
But; though power circuit by protective circuit to reach protection effect; but when system needs multi-group power circuit; just need to organize protective circuit more; so can cause when power circuit be short-circuited or overcurrent etc. is abnormal, erroneous condition time; cannot learn it is which group protective circuit is activated immediately, namely cannot learn it is which group power circuit makes a mistake.
Therefore; the present invention is directed to error detection device and error detection method that the problems referred to above provide a kind of tool multiple protective; when certain group power circuit make a mistake situation and starting protection time; it can learn which group protective circuit is activated immediately; and then learn which group power circuit makes a mistake, begin to solve the above problems.
[summary of the invention]
The object of the present invention is to provide a kind of error detection device and error detection method of tool multiple protective; when some power circuits at least one makes a mistake; by the guard signal that a detecting writing circuit exports according to corresponding protective circuit; and record a misdata; so that system or user learn it is which power circuit makes a mistake according to this misdata, and then promote the reaction time to system debug.
In order to reach above-mentioned censured each object and effect, present invention is disclosed a kind of error detection device of tool multiple protective, for detecting the mistake of some power circuits, error detection device comprises: some protective circuits, couple these power circuits respectively, and an out-put supply of detecting these power circuits each, when out-put supply makes a mistake, the protective circuit of corresponding out-put supply exports a guard signal; One detecting writing circuit, couples these protective circuits, and the guard signal of detecting these protective circuits each, and a misdata of power circuit corresponding to record protection signal, and produce a shutdown signal according to guard signal; And a switch module, couple detecting writing circuit, switch module closes these power circuits according to shutdown signal.
Present invention further teaches a kind of error detection device of tool multiple protective, for detecting the mistake of some power circuits, error detection device comprises: some protective circuits, couple these power circuits respectively, and an out-put supply of detecting these power circuits each, when out-put supply makes a mistake, the protective circuit of corresponding out-put supply exports a guard signal; One detecting writing circuit, couples these protective circuits, and the guard signal of detecting these protective circuits each, and a misdata of power circuit corresponding to record protection signal; And a switch module, couple detecting writing circuit, switch module closes these power circuits according to guard signal.
Present invention further teaches a kind of error detection method of tool multiple protective, its step comprises: the out-put supply detecting each some power circuits; When out-put supply makes a mistake, a protective circuit of corresponding out-put supply exports a guard signal; The guard signal of detecting these protective circuits each, and a misdata of power circuit corresponding to record protection signal; And close these power circuits according to guard signal by a switch module.
Compared to prior art; the error detection device of tool multiple protective of the present invention and error detection method; when some power circuits at least one makes a mistake; corresponding protective circuit output protection signal; to close these power circuits; and detect writing circuit and record a misdata according to this guard signal; this misdata i.e. the corresponding power circuit made a mistake; so; system or user can learn it is which power circuit makes a mistake according to this misdata, and then promote the reaction time to system debug.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate institute's accompanying drawings to be described in detail below.
[accompanying drawing explanation]
Fig. 1 is the circuit diagram of the error detection device of the tool multiple protective of the first embodiment of the present invention.
Fig. 2 is the flow chart of the error detection method of the tool multiple protective of the first embodiment of the present invention.
Fig. 3 is the circuit diagram of the error detection device of the tool multiple protective of the second embodiment of the present invention.
Fig. 4 is the flow chart of the error detection method of the tool multiple protective of the second embodiment of the present invention.
Fig. 5 is the circuit diagram of the error detection device of the tool multiple protective of the third embodiment of the present invention.
[embodiment]
Refer to Fig. 1, it is the circuit diagram of the error detection device of the tool multiple protective of the first embodiment of the present invention.As shown in the figure; one error detection device 1 of tool multiple protective of the present invention is for detecting the state (such as export normal, output over-voltage or export the unusual conditions such as overcurrent) of some power circuits 20, and error detection device 1 comprises some protective circuits 10, detecting writing circuit 12 and a switch module 30.These protective circuits 10 couple these power circuits 20 respectively, and an out-put supply Pout of detecting these power circuits 20 each, when the out-put supply Pout of these power circuits 20 makes a mistake, corresponding protective circuit 10 exports a guard signal Sp.Detecting writing circuit 12 couples these protective circuits 10; and the guard signal Sp that detecting these protective circuits 10 each export; and a misdata of power circuit 20 corresponding to record protection signal Sp, and detecting writing circuit 12 also produces a shutdown signal Dis according to guard signal Sp.Switch module 30 couples detecting writing circuit 12, and closes these power circuits 20 according to shutdown signal Dis.
Wherein, these power circuits 20 couple some functional modules 40 of a system respectively, and to provide these functional modules 40 to operate required power supply, these functional modules 40 only for illustrating the various circuit operated in system, and are not used to limit the present invention.
In this embodiment, these protective circuits 10 are circuit overcurrent protection, and these protective circuits 10 comprise a resistance R, computing module 100 and a comparator 102 respectively.One first end of resistance R couples one of these power circuits 20, the out-put supply Pout exported with receive these power circuits 20 one, one second end of resistance R couples functional module 40, out-put supply Pout produces pressure drop slightly because of resistance R and produces a current sense power supply Pis, and export functional module 40 to, operate required power supply as functional module 40.Resistance R is a micro-resistance, and out-put supply Pout produces pressure drop slightly because of resistance R and generation current detects power supply Pis, but out-put supply Pout is identical in fact with current sense power supply Pis.The first end of computing module 100 coupling resistance R and the second end, and calculate the pressure drop of resistance R generation and produce a detecting power supply Pdet.One first input end of comparator 102 couples computing module 100 and receives detecting power supply Pdet, and one second input of comparator 102 receives a reference voltage Vref, and comparator 102 compares detecting power supply Pdet and reference voltage Vref and output protection signal Sp.
Wherein, computing module 100 of the present invention can be used for calculating the pressure reduction between the first end of resistance R and the second end; namely the pressure reduction between out-put supply Pout and current sense power supply Pis is calculated; and produce corresponding detecting power supply Pdet; so; when there being over-current condition to occur; pressure reduction between the first end of resistance R and the second end can excessive (pressure reduction namely between out-put supply Pout and current sense power supply Pis be excessive); therefore detecting power supply Pdet can higher than the voltage quasi position of reference voltage Vref; so that comparator 102 exports the signal of high levle, i.e. guard signal Sp.
In addition, the reference voltage Vref of the present embodiment supplies power Vcc by some resistance R1, R2 dividing potential drops one of connecting produced, and by the resistance value of adjusting resistance R1 and R2, and adjust the voltage quasi position of reference voltage Vref, namely adjustment judges whether the threshold voltage of over-current condition, but the present invention is not as limit, reference voltage Vref also can directly be produced by a reference voltage source or other modes.
From the above; the protective circuit 10 of the present embodiment is circuit overcurrent protection, but the present invention is not limited to this, and the present invention also can according to the circuit framework changing protective circuit 10 needed for system; to reach different defencive functions, such as, also protective circuit 10 can be changed to excess voltage protection.
Switch module 30 comprises an one first switch M1 and second switch M2.One first end of the first switch M1 is coupled to an earth terminal, and one second end of the first switch M1 couples a control end of second switch M2, and a control end of the first switch M1 receives shutdown signal Dis, and conducting or cut-off according to shutdown signal Dis.One first end of second switch M2 receives an input power Vin, one second end of second switch M2 couples a system output Vout, system output Vout is in order to provide input power Vin to these power circuits 20, each these power circuits 20 produce out-put supply Pout according to input power Vin, second switch M2 conducting or cut-off according to the switching state of the first switch, makes system provide input power Vin to these power circuits 20.
In this embodiment; first switch and second switch are all N-type metal-oxide half field effect transistor (N-MOSFET); therefore when at least one the exported out-put supply Pout in these power circuits 20 has over-current condition; corresponding protective circuit 10 output protection signal Sp (i.e. high levle signal); detecting writing circuit 12 corresponding record misdata; namely according to the source of guard signal Sp, namely learn which power circuit 20 has power supply abnormal state of affairs.Then; detecting writing circuit 12 produces signal (the i.e. shutdown signal Dis of high levle according to guard signal Sp; also can be low level signal); first switch M1 i.e. the conducting according to the shutdown signal Dis of high levle; and then the voltage quasi position of the control end (gate) of second switch M2 is pulled down to earth terminal (zero potential); be supplied to these power circuits 20 to end input power Vin, namely close these power circuits 20, and then close total system.
See also Fig. 2, it is the flow chart of the error detection method of the tool multiple protective of the first embodiment of the present invention.When System Operation, as shown in step S10, these protective circuits 10 detect the out-put supply Pout of these power circuits 20.Then, as shown in step S12, when at least one in the out-put supply Pout of these power circuits 20 makes a mistake, corresponding protective circuit 10 produces guard signal Sp.Then, as shown in step S14, each guard signal Sp that these protective circuits 10 export detected by detecting writing circuit 12, and records the misdata of corresponding guard signal Sp, and this misdata report represents the record of the corresponding power circuit 20 made a mistake containing one.Then, as shown in step S16, the guard signal Sp that detecting writing circuit 12 exports according to these protective circuits 10 and produce shutdown signal Dis.Then, as shown in step S18, switch module 30 closes the power supply to these power circuits 20 according to shutdown signal Dis, namely closes these power circuits 20.
Therefore; when at least one in these power circuits 20 makes a mistake; the guard signal Sp that the present invention is exported according to the protective circuit 10 corresponding to the power circuit 20 made a mistake by detecting record circuit 12, and record includes the misdata of the record of the power circuit 20 of makeing mistakes.So, system or user can learn it is which power circuit 20 makes a mistake according to this misdata, and then promote the reaction time to system debug.
Refer to Fig. 3, it is the circuit diagram of the error detection device of the tool multiple protective of the second embodiment of the present invention.The difference of the present embodiment and the first embodiment is; when these power circuits 20 make a mistake; these protective circuits 10 of the present embodiment are that output protection signal Sp extremely detects writing circuit 12 and switch module 30 simultaneously; to pass through guard signal Sp control switch module 30; and then close these power circuits 20; but not producing shutdown signal Dis to switch module 30 by detecting writing circuit 12, remainder is then identical, and repeats no more.
As shown in Figure 3; the protective circuit 10 of the present embodiment couples detecting writing circuit 12 and switch module 30 simultaneously; when at least one in these power circuits 20 makes a mistake; corresponding protective circuit 10 i.e. output protection signal Sp is to detecting writing circuit 12 and switch module 30; so; first switch M1 direct basis guard signal Sp of switch module 30 and conducting; and then the voltage quasi position of the control end of second switch M2 is pulled down to earth terminal, be supplied to these power circuits 20 to end input power Vin.
See also Fig. 4, it is the flow chart of the error detection method of the tool multiple protective of the second embodiment of the present invention.As shown in the figure, the step S20-S24 of the present embodiment is identical with the step S10-S14 of the first embodiment, thus repeats no more, is only described step S26 below.In step S24; each guard signal Sp that these protective circuits 10 export detected by detecting writing circuit 12; and after recording the misdata of corresponding guard signal Sp; as denoted by step s 26, the guard signal Sp that exports of these protective circuits 10 of switch module 30 direct basis and the power supply of closing these power circuits 20.
From the above, the difference of the second embodiment and the first embodiment is, the second embodiment does not need to produce shutdown signal Dis by detecting writing circuit 12, but directly by the guard signal Sp control switch module 30 of these protective circuits 10 output.
Refer to Fig. 5, it is the circuit diagram of the error detection method of the tool multiple protective of the third embodiment of the present invention.The difference of the present embodiment and the first embodiment is, these protective circuits 10 of the present embodiment are excess voltage protection, and remainder is then identical, and repeats no more.
As shown in Figure 5; resistance R in first embodiment and computing module 100 remove by the protective circuit 10 of the present embodiment; and power circuit 20 is coupled the first input end of comparator 102; to receive the out-put supply Pout that power circuit 20 exports; when the voltage quasi position of out-put supply Pout higher than reference voltage Vref; namely overvoltage is judged as, comparator 102 output protection signal Sp.It can thus be appreciated that protective circuit 10 also can be excess voltage protection, but the present invention is not as limit.
In sum, error detection device and the error detection method of tool multiple protective of the present invention comprise some protective circuits, one detecting writing circuit and a switch module, when some power circuits at least one makes a mistake, corresponding protective circuit output protection signal, to close these power circuits, and detect writing circuit and record a misdata according to this guard signal, this misdata i.e. the corresponding power circuit made a mistake, so, system or user can learn it is which power circuit makes a mistake according to this misdata, and then the reaction time promoted system debug.
Claims (13)
1. an error detection device for tool multiple protective, for detecting the state of some power circuits, is characterized in that, this error detection device comprises:
Some protective circuits, couple these power circuits respectively, and an out-put supply of detecting these power circuits each, when when each this out-put supply, one of them makes a mistake, to this protective circuit of out-put supply exporting a guard signal;
One detecting writing circuit, couples these protective circuits, and this guard signal of detecting these protective circuits each, and record a misdata of this power circuit corresponding to this guard signal, and produce a shutdown signal according to this guard signal; And
One switch module, couple this detecting writing circuit, this switch module closes these power circuits according to this shutdown signal.
2. error detection device as claimed in claim 1, it is characterized in that, these protective circuits respectively comprise:
One comparator; there is a first input end, one second input and an output; this first input end couples this power circuit and receives this out-put supply, and this second input receives a reference voltage, and this comparator compares this out-put supply and this reference voltage and exports this guard signal.
3. error detection device as claimed in claim 1, it is characterized in that, these protective circuits respectively comprise:
One resistance, one first end is coupled to one of these power circuits, and to receive this out-put supply, one second end of this resistance couples a functional module of a system;
One computing module, couples this first end and this second end of this resistance, and calculates this out-put supply and produce a detecting power supply; And
One comparator; there is a first input end, one second input and an output; this first input end couples this computing module and receives this detecting power supply, and this second input receives a reference voltage, and this comparator compares this detecting power supply and this reference voltage and exports this guard signal.
4. error detection device as claimed in claim 1, it is characterized in that, this switch module comprises:
One first switch, one first end is coupled to an earth terminal, and to provide an input power to these power circuits, this first switch cuts out a system output according to this shutdown signal and exports this input power.
5. error detection device as claimed in claim 4, it is characterized in that, this switch module also comprises:
One second switch, one first end receives this input power, and one second end of this second switch couples this system output, and the conducting according to the switching state of this first switch of this second switch, makes this system output provide this input power to these power circuits.
6. an error detection device for tool multiple protective, for detecting the state of some power circuits, is characterized in that, this error detection device comprises:
Some protective circuits, couple these power circuits respectively, and an out-put supply of detecting these power circuits each, when when each this out-put supply, one of them makes a mistake, to this protective circuit of out-put supply exporting a guard signal;
One detecting writing circuit, couples these protective circuits, and this guard signal of detecting these protective circuits each, and record a misdata of this power circuit corresponding to this guard signal; And
One switch module, couple this detecting writing circuit, this switch module closes these power circuits according to this guard signal.
7. error detection device as claimed in claim 6, it is characterized in that, these protective circuits respectively comprise:
One comparator; there is a first input end, one second input and an output; this first input end couples this power circuit and receives this out-put supply, and this second input receives a reference voltage, and this comparator compares this out-put supply and this reference voltage and exports this guard signal.
8. error detection device as claimed in claim 6, it is characterized in that, these protective circuits respectively comprise:
One resistance, one first end is coupled to one of these power circuits, and to receive this out-put supply, one second end of this resistance couples a functional module of a system;
One computing module, couples this first end and this second end of this resistance, and calculates this out-put supply and produce a detecting power supply; And
One comparator; there is a first input end, one second input and an output; this first input end couples this computing module and receives this detecting power supply, and this second input receives a reference voltage, and this comparator compares this detecting power supply and this reference voltage and exports this guard signal.
9. error detection device as claimed in claim 6, it is characterized in that, this switch module comprises:
One first switch, one first end is coupled to an earth terminal, and to provide an input power to these power circuits, this first switch cuts out a system output according to this guard signal and exports this input power.
10. error detection device as claimed in claim 9, it is characterized in that, this switch module also comprises:
One second switch, one first end receives this input power, and one second end of this second switch couples this system output, and the conducting according to the switching state of this first switch of this second switch, makes this system output provide this input power to these power circuits.
The error detection method of 11. 1 kinds of tool multiple protectives, is characterized in that, its step comprises:
Detect an out-put supply of each some power circuits;
When one of them makes a mistake when each this out-put supply, correspondingly produce a guard signal;
Detecting respectively this guard signal, and record a misdata of this power circuit corresponding to this guard signal; And
According to this guard signal to close these power circuits.
12. error detection methods as claimed in claim 11, is characterized in that, according to this guard signal to close in the step of these power circuits, it comprises:
According to this guard signal, produce a shutdown signal; And
According to this shutdown signal to close these power circuits.
13. error detection methods as claimed in claim 11, is characterized in that, when when this out-put supply, one of them makes a mistake, in the step of corresponding generation one guard signal, it comprises:
When this out-put supply makes a mistake, compare this out-put supply and a reference voltage to produce this guard signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189281.XA CN105098719A (en) | 2014-05-07 | 2014-05-07 | Error detecting apparatus and method with multiple protections |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410189281.XA CN105098719A (en) | 2014-05-07 | 2014-05-07 | Error detecting apparatus and method with multiple protections |
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| CN105098719A true CN105098719A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410189281.XA Pending CN105098719A (en) | 2014-05-07 | 2014-05-07 | Error detecting apparatus and method with multiple protections |
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| CN (1) | CN105098719A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105449641A (en) * | 2015-12-04 | 2016-03-30 | 中国船舶重工集团公司第七0九研究所 | Direct current power supply with multi-path fault cut-off type protection function |
| CN106711959A (en) * | 2016-12-22 | 2017-05-24 | 上海艺时网络科技有限公司 | Control circuit and electronic equipment |
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| CN202634049U (en) * | 2012-06-20 | 2012-12-26 | 四川九洲电器集团有限责任公司 | Control circuit of multi-line power supply system |
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| CN203104871U (en) * | 2012-12-19 | 2013-07-31 | 上海三思电子工程有限公司 | Intelligently controlled DALI (digital addressable lighting interface) dimming control device |
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| US6373671B1 (en) * | 1998-10-16 | 2002-04-16 | Hitachi, Ltd. | Apparatus with an over-current shutdown means and an over-temperature shutdown means |
| CN1462105A (en) * | 2002-05-29 | 2003-12-17 | 罗姆股份有限公司 | Supply unit with multiplex power-supply output |
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| CN105449641A (en) * | 2015-12-04 | 2016-03-30 | 中国船舶重工集团公司第七0九研究所 | Direct current power supply with multi-path fault cut-off type protection function |
| CN106711959A (en) * | 2016-12-22 | 2017-05-24 | 上海艺时网络科技有限公司 | Control circuit and electronic equipment |
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