CN201654166U - Intelligent fuse life testing system - Google Patents
Intelligent fuse life testing system Download PDFInfo
- Publication number
- CN201654166U CN201654166U CN2010201211793U CN201020121179U CN201654166U CN 201654166 U CN201654166 U CN 201654166U CN 2010201211793 U CN2010201211793 U CN 2010201211793U CN 201020121179 U CN201020121179 U CN 201020121179U CN 201654166 U CN201654166 U CN 201654166U
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- fuse
- control unit
- central control
- fuses
- service life
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- Expired - Lifetime
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model relates to an intelligent fuse life testing system comprising a central control unit, a programmable constant-current source, a monitoring and isolating module and an executing unit, wherein the programmable constant-current source is connected between one output end of the central control unit and a fuse set in series; the monitoring and isolating module is electrically connected between the input end of the central control unit and each fuse; and the executing unit is electrically connected between the output end of the central control unit and each fuse and used for receiving the signals of the central control unit to carry out short connection on corresponding broken fuses so that other fuses can supply power again. The testing system can monitor the on-off state of the fuses in real time; after some one fuse is fused, the testing system automatically carries out short connection on the fuse so that other fuse samples can automatically supply power again thereby ensuring the continuity of the power-on time of the fuses; and meanwhile, the testing system can accurately control testing current outputted by the constant-current source so as to lay a solid test foundation for the accuracy of fuse life estimation.
Description
Technical field
The utility model relates to a kind of fuse performance pick-up unit, relates in particular to fuse life and detects pilot system.
Background technology
Fuse is a kind of overcurrent protection electrical equipment.During use, fuse is series in the protected circuit, when the electric current of protected circuit surpasses setting, and through behind the certain hour, the heat fusing melt by melt self produces disconnects circuit, plays the effect of protection.Fuse is widely used in low-voltage distribution system and control system and the consumer, as short circuit and overcurrent protection, is to use one of the most general protection device.
Fuse in use because the electric current that self flows through and the influence of external environment, aging degradation inevitably takes place in it, changes the protection feature curve of fuse, influences its serviceable life.
But the aging Direct observation that is difficult for of fuse is judged, because number of applications is huge, also is difficult for judging by whole detections.As the protecting component of circuit or important load, in case fuse, very difficult evaluation is because the aging misoperation that causes of normal fusing that circuit abnormality causes or fuse.There are major safety risks in this phenomenon for some important circuit or load.Therefore be necessary fuse is carried out durability test the life-span of assessment fuse.
The existing means that fuse is tested mainly contain resistive fuse measurement, fuse temperature survey, fusing performance test, degradation diagnostic device and X-RAY detection technique, and the fundamental purpose of these detections is that manufacturer carries out performance test and screening to new fuse products.Aspect burn-in test, be primarily aimed at electrode contact problem of aging, do not consider the melt ageing problem.When fuse has arrived the normal aging state,, will there be potential safety hazard if continue to use.Therefore, for fear of the phenomenon of the overage military service of a large amount of fuses, need study the serviceable life of fuse, with the fuse that guarantees more to renew before fuse is aging, the application just is being based on above-mentioned purpose and the research and design of carrying out.
The utility model content
The purpose of this utility model is to provide a kind of pilot system of using for follow-up accurate assessment fuse life.
For achieving the above object, the technical scheme that the utility model adopted is: a kind of intelligent type test system for service life of fuses, and it is used for a plurality of formed fuse groups of fuse that connect that are in series are carried out durability test, comprising:
Central control unit, it is used to carry out core control;
Constant current source able to programme, it is connected between the output terminal and fuse group of central control unit, is used to receive the command information of central control unit and the test current of setting will be provided for described fuse group;
Monitoring and isolation module, it is connected electrically between the input end and each fuse of central control unit, is used to monitor the on off operating mode of each fuse and the fuse information feedback that disconnects is carried out the electrical isolation protection to central control unit and to central control unit;
Performance element is connected electrically between the output terminal and each fuse of central control unit, is used to receive the signal of central control unit, thereby other fuse is restored electricity the corresponding fuse short circuit that disconnects.
During test, the fuse a plurality of to be detected of sampling out is connected in series, central control unit control constant current source makes its test current of exporting setting to the fuse group, thereby carries out fuse in the durability test that continues under the "on" position.Under long-time "on" position, monitoring detects the break-make of each fuse in real time with isolation module, when wherein certain fuse life termination, to be fused, disconnect when monitoring and isolation module have detected fuse, it will send signal to central control unit, in order to guarantee not influence the durability test of other fuse, the central control unit drives execution element restores electricity the fuse short circuit that disconnects thereby recover other fuse.
According to such scheme in the mode further implemented, also be in series with sampling unit between described constant current source and each the fuse group, described sampling unit also feeds back connection mutually with central control unit, described sampling unit feeds back to central control unit with the test current value in real time, when drift appears in test current, the electric current output that described central control unit is adjusted constant current source makes it restore to setting value, makes the inaccurate problem of result of follow-up life appraisal thereby avoided test result deviation to occur.
As to further improvement in the technical proposal, also be electrically connected with driver element between the output terminal of described central control unit and the input end of performance element, the conversion of signals that described driver element is used for central control unit output is the electric signal that is enough to the drives execution element action.
In concrete enforcement, described performance element is the electronic switching element that is in parallel and is connected with each fuse, and described monitoring isolation module is the photoelectrical coupler that is in parallel and is connected with each fuse.
Because the employing of technique scheme, the utlity model has following advantage: by pilot system of the present utility model, can monitor in real time the on off operating mode of fuse, after certain fuse blows, this fuse of short circuit automatically, thus make other fuse sample automatic recovery of power supply, guarantee free of discontinuities conduction time of fuse, simultaneously, can accurately control the test current of the output of constant current source, for the accuracy of fuse life assessment has been established solid experimental basis.
Description of drawings
Accompanying drawing 1 is the theory diagram of the pilot system implemented according to technical solutions of the utility model;
Wherein: 1, central control unit; 2, constant current source; 3, monitoring and isolation module; 4, performance element; 5, sampling unit; 6, driver element; 7, keyboard load module; 8, display module; 9, storage print module; 10, tested fuse group;
Embodiment
Below in conjunction with accompanying drawing the utility model preferred embodiment is elaborated:
The life appraisal that pilot system provided by the utility model is mainly used in to fuse provides experimental enviroment, at the trial, can extract a plurality of fuses, described a plurality of fuses are connected in series successively form tested fuse group 10, tested fuse group 10 is fixed on the Insulation test plate, like this, by the on off operating mode of this pilot system, just can be follow-up fuse analysis and assessment data refer is provided to 10 energisings of fuse group and each fuse of monitoring record.
The specific implementation principle of the utility model pilot system as shown in Figure 1; its core comprises a central control unit 1; be used to fuse that the constant current source 2 of test current is provided; be used for the output of constant current source 2 to the sampling unit 5 of central control unit 1 feedback to prevent current drift; be used to monitor the on off operating mode of each fuse and the monitoring isolation module 3 that central control unit 1 is played the insulation blocking effect; the fuse that is used for disconnecting carries out the performance element 4 of short circuit; keyboard load module 7; display module 8 and storage print module 9 will be described in detail the specific implementation and the interactively thereof of each functional unit below:
Wherein, central control unit 1 is mainly by chip microcontroller, constant current source 2 is a constant current source able to programme, the output valve that is constant current source 2 is adjustable, sampling unit 5 adopts measuring resistance in the present embodiment, this is because measuring resistance has resistance precision height, low, the stable good characteristics of temperature coefficient, can improve the control accuracy of loop current.The connection that is in series successively of described measuring resistance, constant current source and tested fuse group, and each fuse also adopts the mode that is connected in series, thus guaranteed the consistance of size of current on each fuse.Owing to the time of carrying out durability test is longer, in long galvanization, drift inevitably appears in the output current of constant current source, with the test current value of setting deviation appears promptly, therefore, in the present embodiment, sampling unit 5 feeds back connection mutually with central control unit, like this, sampling unit 5 feeds back to test current central control unit 1 in real time, when the output current appearance drift of constant current source 2, central control unit 1 will be adjusted the output of constant current source 2 automatically, make its output current value be always setting value.
The setting value of described test current realizes by the keyboard load module 7 that is electrically connected with central control unit 1 input end.The setting value of test current can be according to the kind of each fuse to be measured, model and is different.
Described monitoring isolation module 3 is connected electrically between central control unit 1 and the tested fuse group, in the present embodiment, monitoring isolation module 3 adopts photoelectrical coupler, the quantity of photoelectrical coupler is consistent with the number of fuse, and each photoelectrical coupler is connected in parallel on corresponding fuse two ends, in case one of them fuse fuses, then the input end of corresponding photoelectrical coupler is a noble potential, thereby make the photoelectric coupler output end conducting, central control unit 1 can judge that corresponding fuse disconnects after monitoring this Continuity signal, thereby drives performance element 4 actions that are in parallel and are connected with this disconnection fuse.Simultaneously, this photoelectrical coupler also plays the effect of electric signal isolation, thereby effectively protects single-chip microcomputer.
Performance element 4 is a plurality of electronic switches, it can adopt relay or field effect transistor to realize, each fuse electronic switch in parallel, and this electronic switch is a normal open switch, simultaneously, in order to be the electric signal that is enough to drive the electronic switch action with the conversion of signals of central control unit 1 output, be connected with driver element 6 at an output terminal of central control unit 1, in the present embodiment, driver element 6 is chosen as amplifier.Like this, receive the information of certain fuse disconnection that monitoring isolation module 3 sends when central control module 1 after, output signal is by 4 actions of driver element 6 control execution unit rapidly, the feasible electronic switch closes that is in parallel with this fuse, be about to corresponding fuse short circuit, thereby make other fuse restore electricity.
For the size of current that can show constant current source 2 output in real time and the break-make situation of fuse group, this pilot system also comprises a display module 8 that is electrically connected with central control unit 1 output terminal.
Simultaneously, for the fusing time of corresponding fuse being noted to be used to carry out the assessment in life-span, this pilot system also is provided with the storage print module 9 that is electrically connected with central control unit 1.
The output current of constant current source can be regulated and control to the present embodiment test system for service life of fuses automatically, when the fusing individuality appears in the fuse group, system can detect the individual position of this fusing automatically, and with this fuse short circuit, thereby make other fuse sample automatic recovery of power supply, to guarantee the accuracy of life appraisal.
The foregoing description only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this; can not limit protection domain of the present utility model with this; all equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (8)
1. intelligent type test system for service life of fuses, it is used for a plurality of formed fuse groups of fuse (10) that connect that are in series are carried out durability test, comprises
Central control unit (1), it is used to carry out core control;
Constant current source able to programme (2), it is connected between the output terminal and fuse group (10) of central control unit (1), is used to receive the command information of central control unit (1), and the test current of setting is provided for described fuse group (10);
Monitoring and isolation module (3), it is connected electrically between the input end and each fuse of central control unit (1), is used to monitor the on off operating mode of each fuse and the fuse information feedback that disconnects is carried out the electrical isolation protection to central control unit (1) and to central control unit (1);
Performance element (4) is connected electrically between the output terminal and each fuse of central control unit (1), be used to receive central control unit (1) thus the signal and the corresponding fuse short circuit that will disconnect other fuse is restored electricity.
2. intelligent type test system for service life of fuses according to claim 1, it is characterized in that: also be in series with sampling unit (5) between described constant current source (2) and each the fuse group (10), described sampling unit (5) also feeds back connection mutually with central control unit (1), described sampling unit (5) feeds back to the test current value central control unit (1) in real time, when test current appearance drift, described central control unit (1) is adjusted the setting value that outputs current to of constant current source (2).
3. intelligent type test system for service life of fuses according to claim 2 is characterized in that: described sampling unit (5) is a measuring resistance.
4. intelligent type test system for service life of fuses according to claim 1, it is characterized in that: also be electrically connected with driver element (6) between the input end of the output terminal of described central control unit (1) and performance element (4), the conversion of signals that described driver element (6) is used for central control unit (1) output is the electric signal that is enough to drives execution element (6) action.
5. according to claim 1 or 4 described intelligent type test system for service life of fuses, it is characterized in that: described performance element (4) is the electronic switching element that is in parallel and is connected with each fuse.
6. intelligent type test system for service life of fuses according to claim 5 is characterized in that: described electronic switching element is relay or field effect transistor.
7. intelligent type test system for service life of fuses according to claim 1 is characterized in that: described monitoring isolation module (3) is the photoelectrical coupler that is in parallel and is connected with each fuse.
8. intelligent type test system for service life of fuses according to claim 1 is characterized in that: this system also comprises display module (8) and the storage print module (9) that keyboard load module (7), input end and central control unit (1) that output terminal and central control unit (1) are electrically connected are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201211793U CN201654166U (en) | 2010-02-26 | 2010-02-26 | Intelligent fuse life testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201211793U CN201654166U (en) | 2010-02-26 | 2010-02-26 | Intelligent fuse life testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201654166U true CN201654166U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201211793U Expired - Lifetime CN201654166U (en) | 2010-02-26 | 2010-02-26 | Intelligent fuse life testing system |
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| CN (1) | CN201654166U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793943A (en) * | 2010-02-26 | 2010-08-04 | 苏州热工研究院有限公司 | Intelligent type test system for service life of fuses |
| CN102426322A (en) * | 2011-11-01 | 2012-04-25 | 新泰市供电公司 | Fuse member ampere-second characteristic tester |
| CN102519599A (en) * | 2011-12-20 | 2012-06-27 | 苏州热工研究院有限公司 | Fuse automatic temperature measurement system |
| CN102798780A (en) * | 2012-08-08 | 2012-11-28 | 东莞市贝特电子科技股份有限公司 | Fuse test system |
| CN103116105A (en) * | 2013-02-27 | 2013-05-22 | 苏州热工研究院有限公司 | Fuse protector life test system with overheating protection and warning function |
| CN103163421A (en) * | 2013-03-01 | 2013-06-19 | 中国空间技术研究院 | Method and device of testing surge current impact resistant property of fuse |
| CN104360224A (en) * | 2014-11-11 | 2015-02-18 | 甘肃电器科学研究院 | Preheating switching device for fuse breaking capacity test |
-
2010
- 2010-02-26 CN CN2010201211793U patent/CN201654166U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793943A (en) * | 2010-02-26 | 2010-08-04 | 苏州热工研究院有限公司 | Intelligent type test system for service life of fuses |
| CN102426322A (en) * | 2011-11-01 | 2012-04-25 | 新泰市供电公司 | Fuse member ampere-second characteristic tester |
| CN102426322B (en) * | 2011-11-01 | 2013-09-11 | 新泰市供电公司 | Fuse member ampere-second characteristic tester |
| CN102519599A (en) * | 2011-12-20 | 2012-06-27 | 苏州热工研究院有限公司 | Fuse automatic temperature measurement system |
| CN102798780A (en) * | 2012-08-08 | 2012-11-28 | 东莞市贝特电子科技股份有限公司 | Fuse test system |
| CN103116105A (en) * | 2013-02-27 | 2013-05-22 | 苏州热工研究院有限公司 | Fuse protector life test system with overheating protection and warning function |
| CN103163421A (en) * | 2013-03-01 | 2013-06-19 | 中国空间技术研究院 | Method and device of testing surge current impact resistant property of fuse |
| CN103163421B (en) * | 2013-03-01 | 2016-03-02 | 中国空间技术研究院 | A kind of method measuring surge current impact resistant property |
| CN104360224A (en) * | 2014-11-11 | 2015-02-18 | 甘肃电器科学研究院 | Preheating switching device for fuse breaking capacity test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101124 Effective date of abandoning: 20120314 |