CN203385808U - Fault detection apparatus - Google Patents
Fault detection apparatus Download PDFInfo
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- CN203385808U CN203385808U CN201320491868.7U CN201320491868U CN203385808U CN 203385808 U CN203385808 U CN 203385808U CN 201320491868 U CN201320491868 U CN 201320491868U CN 203385808 U CN203385808 U CN 203385808U
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- hysteresis loop
- high level
- latch
- module
- level signal
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Abstract
The utility model discloses a fault detection apparatus which can position fault modules. The fault detection apparatus comprises a plurality of hysteresis comparators and a plurality of fault characterization units. Each hysteresis comparator is connected with a module to be detected. When one hysteresis comparator receives fault signals output by the module connected with the hysteresis comparator and to be detected, the hysteresis comparator outputs high-level signals. Each fault characterization unit is connected with one hysteresis comparator. When one fault characterization unit receives the high-level signals output by the hysteresis comparator connected with the fault characterization unit, the state of the fault characterization unit is changed. The fault characterization unit with a changed state corresponds to a module to be detected and the module is a fault module.
Description
Technical field
The utility model relates to detection field, relates in particular to a kind of failure detector.
Background technology
Along with the popularization of modular design concept, the series-parallel application of a plurality of modules is more and more extensive.In some applications, while in the plurality of module, having module failure, need the plurality of module all to cut off the power supply to detect the replacing malfunctioning module, for example, in the series-parallel occasion of a plurality of power models of wind energy converter.
In prior art, the maintainer is when a plurality of module in the face of outage, only can whether normally carry out to determine whether fault of each module by detecting one by one each module parameter, orienting malfunctioning module is changed, visible, the localization method efficiency of prior art malfunctioning module is lower, and, due to the limitation of the each side factors such as installation site, structural member, this scheme is difficult for realizing.
The utility model content
The utility model embodiment provides a kind of failure detector, in order to realize the location of malfunctioning module.
The utility model embodiment provides a kind of failure detector, comprises a plurality of hysteresis loop comparators and a plurality of fault signatures unit, wherein:
Each hysteresis loop comparator connects a module to be detected, when hysteresis loop comparator receives the fault-signal of connected module output to be detected, and this hysteresis loop comparator output high level signal;
Each fault signature unit connects a hysteresis loop comparator, and when the fault signature unit receives the high level signal of connected hysteresis loop comparator output, the state of this fault signature unit changes; The module to be detected that the fault signature unit that state changes is corresponding is malfunctioning module.
The utility model embodiment provides a kind of failure detector, comprises a plurality of hysteresis loop comparators, a plurality of buffer circuit and a plurality of fault signatures unit, wherein:
Each hysteresis loop comparator connects a module to be detected, and when hysteresis loop comparator receives the fault-signal of connected module output to be detected, this hysteresis loop comparator is exported the first high level signal;
Each buffer circuit connects a hysteresis loop comparator, when buffer circuit receives the first high level signal of connected hysteresis loop comparator output, and this buffer circuit isolation output second high level signal;
Each fault signature unit connects a buffer circuit, and when the fault signature unit receives the second high level signal of connected buffer circuit output, the state of this fault signature unit changes; The module to be detected that the fault signature unit that state changes is corresponding is malfunctioning module.
The utility model embodiment provides a kind of failure detector, comprises a plurality of hysteresis loop comparators, a plurality of double-point double-throw switch and a plurality of latch-type relay, wherein:
Each hysteresis loop comparator connects a module to be detected, when hysteresis loop comparator receives the fault-signal of connected module output to be detected, and this hysteresis loop comparator output high level signal;
The normally closed stationary contact of each double-point double-throw switch connects a hysteresis loop comparator; The stationary contact of often opening of each double-point double-throw switch is relay contact reset power terminals, and the voltage direction of described relay contact reset power and described high level signal is contrary;
Each latch-type relay connects the moving contact of a double-point double-throw switch, when latch-type relay receives the high level signal of hysteresis loop comparator output by connected double-point double-throw switch, the on off operating mode of the contact of this latch-type relay changes; The module to be detected that the latch-type relay that the on off operating mode of contact changes is corresponding is malfunctioning module.
The utility model embodiment provides a kind of failure detector, comprises a plurality of hysteresis loop comparators, a plurality of buffer circuit, a plurality of double-point double-throw switch and a plurality of latch-type relay, wherein:
Each hysteresis loop comparator connects a module to be detected, and when hysteresis loop comparator receives the fault-signal of connected module output to be detected, this hysteresis loop comparator is exported the first high level signal;
Each buffer circuit connects a hysteresis loop comparator, when buffer circuit receives the first high level signal of connected hysteresis loop comparator output, and this buffer circuit isolation output second high level signal;
The normally closed stationary contact of each double-point double-throw switch connects a buffer circuit; The stationary contact of often opening of each double-point double-throw switch is relay contact reset power terminals, and the voltage direction of described relay contact reset power and described the second high level signal is contrary;
Each latch-type relay connects the moving contact of a double-point double-throw switch, when latch-type relay receives the second high level signal of buffer circuit output by connected double-point double-throw switch, the on off operating mode of the contact of this latch-type relay changes; The module to be detected that the latch-type relay that the on off operating mode of contact changes is corresponding is malfunctioning module.
The failure detector that the utility model embodiment provides, each hysteresis loop comparator connects respectively a module to be detected and a fault signature unit, when arbitrary hysteresis loop comparator receives the fault-signal of connected module output to be detected, this hysteresis loop comparator output high level signal, the state of the fault signature unit be connected with this hysteresis loop comparator changes, the module to be detected that the fault signature unit that state changes is corresponding is malfunctioning module, realize the location of malfunctioning module, improved maintainer's work efficiency.
The accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms the part of instructions, with the utility model embodiment mono-, is used from explanation the utility model, does not form restriction of the present utility model.In the accompanying drawings:
The structural representation of the failure detector that Fig. 1 provides for the utility model embodiment 1;
The structural representation of the failure detector that Fig. 2 provides for the utility model embodiment 2;
The structural representation of the failure detector that Fig. 3 provides for the utility model embodiment 3;
The schematic diagram of double-point double-throw switch in the failure detector that Fig. 4 provides for the utility model embodiment 3;
The structural representation of the failure detector that Fig. 5 provides for the utility model embodiment 4.
Embodiment
In order to provide the implementation that can locate malfunctioning module, the utility model embodiment provides a kind of failure detector, below in conjunction with Figure of description, preferred embodiment of the present utility model is described, be to be understood that, preferred embodiment described herein is only for description and interpretation the utility model, and is not used in restriction the utility model.And, in the situation that do not conflict, embodiment and the feature in embodiment in the application can combine mutually.
Embodiment 1:
Figure 1 shows that the utility model embodiment 1 provides a kind of failure detector, comprise a plurality of hysteresis loop comparators 101 and a plurality of fault signatures unit 102, wherein:
Each hysteresis loop comparator 101 connects a module to be detected, when hysteresis loop comparator 101 receives the fault-signal of connected module output to be detected, and these hysteresis loop comparator 101 output high level signals;
Each fault signature unit 102 connects a hysteresis loop comparator 101, and when fault signature unit 102 receives the high level signal of connected hysteresis loop comparator 101 outputs, the state of this fault signature unit 102 changes; The module to be detected of fault signature unit 102 correspondences that state changes is malfunctioning module.
Hysteresis loop comparator is a kind of comparer commonly used in prior art, and antijamming capability is stronger, and its detailed principle introduction can, referring to " Fundamentals of Electronic Technology " the 4th edition simulation part the 9th chapter, not repeat them here.
In the above-mentioned failure detector that the utility model embodiment 1 provides, setting by the comparative voltage to hysteresis loop comparator 101, the signal that can make hysteresis loop comparator 101 can treat detection module output is distinguished, and prevents that fault signature unit 102 receives high level signal when module to be detected is exported non-fault-signal.
Further, above-mentioned fault signature unit 102 is specifically as follows following three kinds of devices:
The first: fault signature unit 102 is specially latch-type relay;
When latch-type relay receives the high level signal of connected hysteresis loop comparator 101 outputs, the on off operating mode of the contact of this latch-type relay changes; The module to be detected that the latch-type relay that the on off operating mode of contact changes is corresponding is malfunctioning module;
When specific implementation, the coil of latch-type relay is connected with hysteresis loop comparator 101, the high level signal of hysteresis loop comparator 101 outputs can make the coil of latch-type relay power on, thereby changes the on off operating mode of the contact of latch-type relay;
If the contact of latch-type relay is normally closed contact, when this latch-type relay receives the high level signal of connected hysteresis loop comparator 101 outputs, the coil of this latch-type relay powers on, make the normally closed contact of this latch-type relay disconnect, now, module to be detected corresponding to latch-type relay that normally closed contact disconnects is malfunctioning module;
If the contact of latch-type relay is normally opened contact, when this latch-type relay receives the high level signal of connected hysteresis loop comparator 101 outputs, the coil of this latch-type relay powers on, make the normally opened contact closure of this latch-type relay, now, the module to be detected that the latch-type relay of normally opened contact closure is corresponding is malfunctioning module;
Due to what adopt, be latch-type relay, after outage, the state of the contact of each latch-type relay can not change, can be according to the state location malfunctioning module of the contact of each latch-type relay;
Malfunctioning module is being changed, and before restarting each module, the contact of the latch-type relay that need to change to the contact on off operating mode is resetted, so that latch-type relay can accurately carry out follow-up fault signature.
The second: fault signature unit 102 is specially fuse;
When fuse receives the high level signal of connected hysteresis loop comparator output, this fuse failure; The module to be detected corresponding to fuse of fusing is malfunctioning module;
Malfunctioning module is being changed, before restarting each module, need to changed the fuse of fusing, so that fuse can accurately carry out follow-up fault signature.
The third: fault signature unit 102 is specially overload protective device;
When the overload protector receives the high level signal of connected hysteresis loop comparator output, this overload protective device escape; The module to be detected that the overload protective device of escape is corresponding is malfunctioning module;
Malfunctioning module is being changed, before restarting each module, need to the overload protective device of escape resetted, so that overload protective device can accurately carry out follow-up fault signature.
Above-mentioned three kinds of devices are only an example, and be not used in restriction the utility model, other state when receiving high level signal can change and lower electricity after the state device that can keep also can be used as the specific implementation of fault signature unit 102 in the failure detector that the utility model embodiment 1 provides.
Visible, as to adopt the utility model embodiment 1 to provide failure detector, the location that can realize malfunctioning module, and scheme simple, intuitive, can improve maintainer's work efficiency.
In order to improve maintainer's operational security, the utility model embodiment also provides a kind of failure detector, refers to following embodiment 2.
Embodiment 2:
Figure 2 shows that the utility model embodiment 2 provides a kind of failure detector, comprise a plurality of hysteresis loop comparators 201, a plurality of buffer circuit 202 and a plurality of fault signatures unit 203, wherein:
Each hysteresis loop comparator 201 connects a module to be detected, when hysteresis loop comparator 201 receives the fault-signal of connected module output to be detected, and these hysteresis loop comparator 201 output first high level signals;
Each buffer circuit 202 connects a hysteresis loop comparator 201, when buffer circuit 202 receives the first high level signal of connected hysteresis loop comparator 201 outputs, and these buffer circuit 202 isolation output second high level signals;
Each fault signature unit 203 connects a buffer circuit 202, and when fault signature unit 203 receives the second high level signal of connected buffer circuit 202 outputs, the state of this fault signature unit 203 changes; The module to be detected of fault signature unit 203 correspondences that state changes is malfunctioning module.
Further, fault signature unit 203 is specifically as follows latch-type relay, and when latch-type relay receives the second high level signal of connected buffer circuit 202 outputs, the on off operating mode of the contact of this latch-type relay changes; Fault signature unit 203 can be also specifically fuse, when fuse receives the second high level signal of connected buffer circuit 202 outputs, and this fuse failure; Fault signature unit 203 can be also specifically overload protective device, when the overload protector receives the second high level signal of connected buffer circuit 202 outputs, and this overload protective device escape.
The principle of work of the principle of work of the hysteresis loop comparator 201 in the utility model embodiment 2 and hysteresis loop comparator 101 in above-described embodiment 1 is identical, the principle of work of the principle of work of the fault signature unit 203 in the utility model embodiment 2 and fault signature unit 102 in above-described embodiment 1 is identical, therefore do not repeat them here, refer to above-described embodiment 1.
Isolated location in the utility model embodiment 2 is specifically as follows various buffer circuit of the prior art, according to the safety requirement of practical application, can realize the electrical isolation of primary side and secondary side.
Therefore, the failure detector that adopts the utility model embodiment 2 to provide, can further improve maintainer's operational security than above-described embodiment 1.
In the utility model embodiment 1 and embodiment 2, when if the fault signature unit adopts latch-type relay to realize, before determining malfunctioning module and having carried out replacing, restart each module, the contact of the latch-type relay that need to change to the contact on off operating mode is resetted.And the contact of latch-type relay just can reset when the voltage reverse in the input of the coil of latch-type relay and normal working voltage is only arranged.
For the contact that facilitates latch-type relay resets, the utility model embodiment also provides a kind of failure detector, refers to following embodiment 3.
Embodiment 3:
Figure 3 shows that the failure detector that the utility model embodiment 3 provides, comprise a plurality of hysteresis loop comparators 301, a plurality of double-point double-throw switch 302 and a plurality of latch-type relay 303, wherein:
Each hysteresis loop comparator 301 connects a module to be detected, when hysteresis loop comparator 301 receives the fault-signal of connected module output to be detected, and these hysteresis loop comparator 301 output high level signals;
The normally closed stationary contact of each double-point double-throw switch 302 connects a hysteresis loop comparator 301; The stationary contact of often opening of each double-point double-throw switch 302 is relay contact reset power terminals, and the voltage direction of described relay contact reset power and described high level signal is contrary;
Each latch-type relay 303 connects the moving contact of a double-point double-throw switch 302, when latch-type relay 303 receives the high level signal of hysteresis loop comparator 301 outputs by connected double-point double-throw switch 302, the on off operating mode of the contact of this latch-type relay 303 changes; The module to be detected of latch-type relay 303 correspondences that the on off operating mode of contact changes is malfunctioning module.
When specific implementation, the coil of latch-type relay 303 is connected with the moving contact of double-point double-throw switch 302, the high level signal of hysteresis loop comparator 301 outputs can make the coil of latch-type relay 303 power on by double-point double-throw switch 302, thereby changes the on off operating mode of the contact of latch-type relay 303.
Figure 4 shows that the schematic diagram of above-mentioned double-point double-throw switch 302, wherein contact 1,4 is normally closed stationary contact, for connecting hysteresis loop comparator 301, the voltage direction of the high level signal of hysteresis loop comparator 301 outputs is identical with the normal working voltage direction of latch-type relay; Contact 3,6 is for often opening stationary contact, for connecting the relay contact reset power, and the normal working voltage opposite direction of the voltage direction of relay contact reset power and latch-type relay; Contact 2,5 is moving contact, for connecting latch-type relay 303.
Generally, moving contact 2 is connected to normally closed stationary contact 1, and moving contact 5 is connected to normally closed stationary contact 4, and hysteresis loop comparator 301 and latch-type relay 303 are communicated with by this double-point double-throw switch 302; And in the time need to being resetted to the contact of latch-type relay 303, moving contact 2 is connected to and often opens stationary contact 3, moving contact 5 is connected to and often opens stationary contact 6, latch-type relay 303 and relay contact reset power are communicated with, and the reverse voltage of relay contact reset power output resets the contact of latch-type relay 303.
Above-mentioned double-point double-throw switch 302 is specifically as follows a hand switch, can be also relay switch etc.
Visible, as to adopt the utility model embodiment 3 to provide failure detector, the resetting of contact that can realize comparatively easily latch-type relay.
Based on same design, the utility model embodiment also provides a kind of failure detector, refers to following embodiment 4.
Embodiment 4:
Figure 5 shows that the failure detector that the utility model embodiment 4 provides, comprise a plurality of hysteresis loop comparators 501, a plurality of buffer circuit 502, a plurality of double-point double-throw switch 503 and a plurality of latch-type relay 504, wherein:
Each hysteresis loop comparator 501 connects a module to be detected, when hysteresis loop comparator 501 receives the fault-signal of connected module output to be detected, and these hysteresis loop comparator 501 output first high level signals;
Each buffer circuit 502 connects a hysteresis loop comparator 501, when buffer circuit 502 receives the first high level signal of connected hysteresis loop comparator 501 outputs, and these buffer circuit 502 isolation output second high level signals;
The normally closed stationary contact of each double-point double-throw switch 503 connects a buffer circuit 502; The stationary contact of often opening of each double-point double-throw switch 502 is relay contact reset power terminals, and the voltage direction of described relay contact reset power and described the second high level signal is contrary;
Each latch-type relay 504 connects the moving contact of a double-point double-throw switch 503, when latch-type relay 504 receives the second high level signal of buffer circuit 502 outputs by connected double-point double-throw switch 503, the on off operating mode of the contact of this latch-type relay 504 changes; The module to be detected of latch-type relay 504 correspondences that the on off operating mode of contact changes is malfunctioning module.
When specific implementation, the coil of latch-type relay 504 is connected with the moving contact of double-point double-throw switch 503, the second high level signal of buffer circuit 502 outputs can make the coil of latch-type relay 504 power on by double-point double-throw switch 503, thereby changes the on off operating mode of the contact of latch-type relay 504.
Buffer circuit 502 can be realized the electrical isolation of primary side and secondary side, and double-point double-throw switch 503 can be realized the resetting of contact of latch-type relay comparatively easily.
Visible, as to adopt the utility model embodiment 4 to provide failure detector, the location that can under the outage scene, realize malfunctioning module, improve maintainer's work efficiency and operational security.
Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also is intended to comprise these changes and modification interior.
Claims (10)
1. a failure detector, is characterized in that, comprises a plurality of hysteresis loop comparators and a plurality of fault signatures unit, wherein:
Each hysteresis loop comparator connects a module to be detected, when hysteresis loop comparator receives the fault-signal of connected module output to be detected, and this hysteresis loop comparator output high level signal;
Each fault signature unit connects a hysteresis loop comparator, and when the fault signature unit receives the high level signal of connected hysteresis loop comparator output, the state of this fault signature unit changes; The module to be detected that the fault signature unit that state changes is corresponding is malfunctioning module.
2. failure detector as claimed in claim 1, is characterized in that, described fault signature unit is specially latch-type relay; When latch-type relay receives the high level signal of connected hysteresis loop comparator output, the on off operating mode of the contact of this latch-type relay changes.
3. failure detector as claimed in claim 1, is characterized in that, described fault signature unit is specially fuse; When fuse receives the high level signal of connected hysteresis loop comparator output, this fuse failure.
4. failure detector as claimed in claim 1, is characterized in that, described fault signature unit is specially overload protective device; When the overload protector receives the high level signal of connected hysteresis loop comparator output, this overload protective device escape.
5. a failure detector, is characterized in that, comprises a plurality of hysteresis loop comparators, a plurality of buffer circuit and a plurality of fault signatures unit, wherein:
Each hysteresis loop comparator connects a module to be detected, and when hysteresis loop comparator receives the fault-signal of connected module output to be detected, this hysteresis loop comparator is exported the first high level signal;
Each buffer circuit connects a hysteresis loop comparator, when buffer circuit receives the first high level signal of connected hysteresis loop comparator output, and this buffer circuit isolation output second high level signal;
Each fault signature unit connects a buffer circuit, and when the fault signature unit receives the second high level signal of connected buffer circuit output, the state of this fault signature unit changes; The module to be detected that the fault signature unit that state changes is corresponding is malfunctioning module.
6. failure detector as claimed in claim 5, is characterized in that, described fault signature unit is specially latch-type relay; When latch-type relay receives the second high level signal of connected buffer circuit output, the on off operating mode of the contact of this latch-type relay changes.
7. failure detector as claimed in claim 5, is characterized in that, described fault signature unit is specially fuse; When fuse receives the second high level signal of connected buffer circuit output, this fuse failure.
8. failure detector as claimed in claim 5, is characterized in that, described fault signature unit is specially overload protective device; When the overload protector receives the second high level signal of connected buffer circuit output, this overload protective device escape.
9. a failure detector, is characterized in that, comprises a plurality of hysteresis loop comparators, a plurality of double-point double-throw switch and a plurality of latch-type relay, wherein:
Each hysteresis loop comparator connects a module to be detected, when hysteresis loop comparator receives the fault-signal of connected module output to be detected, and this hysteresis loop comparator output high level signal;
The normally closed stationary contact of each double-point double-throw switch connects a hysteresis loop comparator; The stationary contact of often opening of each double-point double-throw switch is relay contact reset power terminals, and the voltage direction of described relay contact reset power and described high level signal is contrary;
Each latch-type relay connects the moving contact of a double-point double-throw switch, when latch-type relay receives the high level signal of hysteresis loop comparator output by connected double-point double-throw switch, the on off operating mode of the contact of this latch-type relay changes; The module to be detected that the latch-type relay that the on off operating mode of contact changes is corresponding is malfunctioning module.
10. a failure detector, is characterized in that, comprises a plurality of hysteresis loop comparators, a plurality of buffer circuit, a plurality of double-point double-throw switch and a plurality of latch-type relay, wherein:
Each hysteresis loop comparator connects a module to be detected, and when hysteresis loop comparator receives the fault-signal of connected module output to be detected, this hysteresis loop comparator is exported the first high level signal;
Each buffer circuit connects a hysteresis loop comparator, when buffer circuit receives the first high level signal of connected hysteresis loop comparator output, and this buffer circuit isolation output second high level signal;
The normally closed stationary contact of each double-point double-throw switch connects a buffer circuit; The stationary contact of often opening of each double-point double-throw switch is relay contact reset power terminals, and the voltage direction of described relay contact reset power and described the second high level signal is contrary;
Each latch-type relay connects the moving contact of a double-point double-throw switch, when latch-type relay receives the second high level signal of buffer circuit output by connected double-point double-throw switch, the on off operating mode of the contact of this latch-type relay changes; The module to be detected that the latch-type relay that the on off operating mode of contact changes is corresponding is malfunctioning module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320491868.7U CN203385808U (en) | 2013-08-12 | 2013-08-12 | Fault detection apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320491868.7U CN203385808U (en) | 2013-08-12 | 2013-08-12 | Fault detection apparatus |
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| CN203385808U true CN203385808U (en) | 2014-01-08 |
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| CN201320491868.7U Expired - Lifetime CN203385808U (en) | 2013-08-12 | 2013-08-12 | Fault detection apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277834A (en) * | 2014-06-18 | 2016-01-27 | 艾默生网络能源有限公司 | Detection circuit |
-
2013
- 2013-08-12 CN CN201320491868.7U patent/CN203385808U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277834A (en) * | 2014-06-18 | 2016-01-27 | 艾默生网络能源有限公司 | Detection circuit |
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Address after: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park building B2 Patentee after: VERTIV TECH Co.,Ltd. Address before: 518057 Nanshan District science and Technology Industrial Park, Guangdong, Shenzhen Branch Road, No. Patentee before: EMERSON NETWORK POWER Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
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Effective date of registration: 20220215 Address after: 712000 room 804, 8th floor, building 14, West Yungu phase I, Fengxi new town, Xixian new area, Xi'an, Shaanxi Patentee after: Weidi new energy Co.,Ltd. Address before: 518055 B2, Nanshan Zhiyuan, 1001 Nanshan District Xue Yuan Avenue, Shenzhen, Guangdong. Patentee before: VERTIV TECH Co.,Ltd. |
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Granted publication date: 20140108 |