CN101937227B - Vehicle circuit breaker production monitoring system and method - Google Patents
Vehicle circuit breaker production monitoring system and method Download PDFInfo
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- CN101937227B CN101937227B CN2010102743710A CN201010274371A CN101937227B CN 101937227 B CN101937227 B CN 101937227B CN 2010102743710 A CN2010102743710 A CN 2010102743710A CN 201010274371 A CN201010274371 A CN 201010274371A CN 101937227 B CN101937227 B CN 101937227B
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Abstract
The invention discloses vehicle circuit breaker production monitoring method and system, relating to a monitoring technology in the production process of a protection switch and solving the problem that processing information in the production process can not be mastered in time. The system comprises a sensor group, a PLC (Programmable Logical Controller) control unit and a computer, wherein the sensor group comprises a pressure sensor, a movable contact sensor, a rivet sensor, a height sensor, an angle sensor, a fixed contact sensor, a welding slice sensor and a preload sensor which respectively send corresponding monitoring results, the PLC control unit is used for receiving the monitoring results and judging the received monitoring results, and if the received results are judged to be in normal ranges, the PLC control unit packets data for sending, and if the received monitoring results are judged to be not in normal ranges, the PLC control unit sends alarm information, and the computer is used for receiving the packed data sent by the PLC control unit to establish a database and displaying the alarm information preferentially and also used for searching and inquiring information in the database and displaying the information. The vehicle circuit breaker production monitoring method and system are used for monitoring the whole production process of vehicle circuit breakers.
Description
Technical field
The present invention relates to the monitoring system in the protection switch manufacturing process.
Background technology
In the tradition; When the tool using machine adds man-hour to workpiece; The supvr can hope and can obtain machine tool present processing state and information from far-end, as which kind of workpiece process, workpiece whether on operator's console workpiece, whether accomplish the machined parameters data of this processing, workpiece etc.
Especially; When being provided with several in the factory during with the kenel or the machine tool of different kenels; If the supvr will obtain each machine tool present processing state and information, the working site of must in person or sending someone is inspected one by one and is made a copy of, and has brought inconvenience to operating process.
Simultaneously, the supvr can't once obtain all boards instant processing state and information, causes the inconvenience in the processing scheduling.If in process, mistake processing or the danger that produces defect ware only if just the someone discovers eliminating, otherwise possibly take place in machine tool generation unusual condition, and efficient and output to producing exert an influence.
Summary of the invention
The present invention understands untimely problem in order to solve in the existing production run to machining information, and has proposed circuit breaker for vehicle production monitoring system and monitoring method thereof.
It comprises sensor groups, PLC control module a and computing machine b circuit breaker for vehicle production monitoring system of the present invention;
Described sensor groups is made up of pressure transducer F, moving contact sensor G1, rivet sensor G2, height sensor H, angular transducer J, stationary contact sensor G3, bonding pad sensor G4 and pretightning force sensor Y;
Pressure transducer F, the memory metal sheet 1 that is used for monitoring circuit breaker for vehicle is being processed to form arc process pressure;
Moving contact sensor G1 is used to monitor on the position that the memory metal sheet 1 of circuit breaker for vehicle sets whether be welded with moving contact 2, and monitoring result is sent PLC control module a;
Rivet sensor G2 is used to monitor on the position that the memory metal sheet 1 of circuit breaker for vehicle sets whether be welded with rivet 3, and monitoring result is sent PLC control module a;
Height sensor H is used to monitor the pitch of arch of the memory metal sheet 1 of circuit breaker for vehicle;
Stationary contact sensor G3 is used to monitor on the position that first conducting strip 4 of circuit breaker for vehicle sets whether be welded with stationary contact 5, and monitoring result is sent PLC control module a;
Bonding pad sensor G4 is used to monitor on the position that second conducting strip 6 of circuit breaker for vehicle sets whether be welded with bonding pad 7, and monitoring result is sent PLC control module a;
Angular transducer J is used to monitor the windup-degree of second conducting strip 6 of circuit breaker for vehicle;
Pretightning force sensor Y is used to monitor the moving contact 2 of circuit breaker for vehicle and the pretightning force between the stationary contact 5;
PLC control module a; Be used to receive the monitoring result that pressure transducer F, moving contact sensor G1, rivet sensor G2, height sensor H, angular transducer J, stationary contact sensor G3, bonding pad sensor G4 and pretightning force sensor Y are sent; And received monitoring result judged judge monitoring result in normal range, then packing data sends to computing machine b; Judge monitoring result not in normal range, then send warning message and give computing machine b;
Computing machine b is used to receive the packing data structure database that PLC control module a sends, and preferential display alarm information; Also be used in database search query information and demonstration.
Circuit breaker for vehicle production monitoring method of the present invention is to make each circuit breaker for vehicle all carry out following step 1 to ten in production run, realizes the real-time monitoring to production run, and said step 1 to ten is following:
Step 1: the sensor of circuit breaker for vehicle production monitoring system is arranged on bonding machine and the kludge;
Step 2: the position of the moving contact 2 of welding completion is detected through moving contact sensor G1; And workpiece sequence number and testing result sent to PLC control module a in real time; PLC control module a judges that moving contact 2 is whether on the memory metal sheet position of setting; If on the position of setting, it is qualified then to judge, and record moving contact 2 positions are qualified; If not on the position of setting, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 3: the position of the rivet 3 of welding completion is detected through rivet sensor G2; And workpiece sequence number and testing result sent to PLC control module a in real time; PLC control module a judges that rivet 3 is whether on the memory metal sheet position of setting; If on the position of setting, it is qualified then to judge, and the position of record rivet 3 is qualified; If not on the position of setting, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 4: in compacting, the memory metal sheet of compacting is detected, and workpiece sequence number and detection data in real time are sent to PLC control module a through pressure transducer F;
Step 5: the pitch of arch of the memory metal sheet of compacting completion is detected through height sensor H; And workpiece sequence number and testing result sent to PLC control module a in real time; Whether the pitch of arch that PLC control module a judge to detect obtains is in the altitude range of setting; If, it is qualified then to judge, and it is qualified to write down the height of the said pitch of arch; If do not exist, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 6: the position of the stationary contact 5 of welding completion is detected through stationary contact sensor G3; And workpiece sequence number and testing result sent to PLC control module a in real time; PLC control module a judges that stationary contact 5 is whether on first conducting strip, 4 positions of setting; If on the position of setting, it is qualified then to judge, and the position of record stationary contact 5 is qualified; If not on the position of setting, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 7: the position of the bonding pad 7 of welding completion is detected through bonding pad sensor G4; And workpiece sequence number and testing result sent to PLC control module a in real time; PLC control module a judges that bonding pad 7 is whether on second conducting strip, 6 positions of setting; If on the position of setting, it is qualified then to judge, and the position of record bonding pad 7 is qualified; If not on the position of setting, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 8: through angular transducer J second conducting strip, 6 windup-degrees are detected, and workpiece sequence number and testing result are sent to PLC control module a in real time;
Step 9: through pretightning force sensor Y the pretightning force between moving contact 2 and the stationary contact 5 is detected, and workpiece sequence number and testing result are sent to PLC control module a in real time;
Step 10: PLC control module a will receive the workpiece sequence number and the testing result packing sends to computing machine b; Computing machine b carries out correspondence according to the workpiece sequence number in the result data that receives with all testing results; And set up database, inquiry is transferred data through the Query Information in the Database Lists.
The present invention monitors the overall process of making circuit breaker for vehicle in real time, and whether the scope of judging its data is in fixed range.Can also inquire about each technological parameter when accomplishing after monitoring is accomplished, and find through the test and the use of product whether technological parameter is reasonable, in non-qualified kind, learn failure cause through the inquiry technological parameter.
Description of drawings
Fig. 1 is the structural representation of circuit breaker for vehicle production monitoring system of the present invention; Fig. 2 is the structural representation of circuit breaker for vehicle production monitoring system in the embodiment two.
Embodiment
Embodiment one: combine Fig. 1 that this embodiment is described, this embodiment is that circuit breaker for vehicle production monitoring system comprises sensor groups, PLC control module a and computing machine b;
Described sensor groups is made up of pressure transducer F, moving contact sensor G1, rivet sensor G2, height sensor H, angular transducer J, stationary contact sensor G3, bonding pad sensor G4 and pretightning force sensor Y;
Pressure transducer F, the memory metal sheet 1 that is used for monitoring circuit breaker for vehicle is being processed to form arc process pressure;
Moving contact sensor G1 is used to monitor on the position that the memory metal sheet 1 of circuit breaker for vehicle sets whether be welded with moving contact 2, and monitoring result is sent PLC control module a;
Rivet sensor G2 is used to monitor on the position that the memory metal sheet 1 of circuit breaker for vehicle sets whether be welded with rivet 3, and monitoring result is sent PLC control module a;
Height sensor H is used to monitor the pitch of arch of the memory metal sheet 1 of circuit breaker for vehicle;
Stationary contact sensor G3 is used to monitor on the position that first conducting strip 4 of circuit breaker for vehicle sets whether be welded with stationary contact 5, and monitoring result is sent PLC control module a;
Bonding pad sensor G4 is used to monitor on the position that second conducting strip 6 of circuit breaker for vehicle sets whether be welded with bonding pad 7, and monitoring result is sent PLC control module a;
Angular transducer J is used to monitor the windup-degree of second conducting strip 6 of circuit breaker for vehicle;
Pretightning force sensor Y is used to monitor the moving contact 2 of circuit breaker for vehicle and the pretightning force between the stationary contact 5;
PLC control module a; Be used to receive the monitoring result that pressure transducer F, moving contact sensor G1, rivet sensor G2, height sensor H, angular transducer J, stationary contact sensor G3, bonding pad sensor G4 and pretightning force sensor Y are sent; And received monitoring result judged judge monitoring result in normal range, then packing data sends to computing machine b; Judge monitoring result not in normal range, then send warning message and give computing machine b;
Computing machine b is used to receive the packing data structure database that PLC control module a sends, and preferential display alarm information; Also be used in database search query information and demonstration.
Embodiment two: combine Fig. 2 that this embodiment is described, this embodiment is also to comprise reometer with embodiment one difference, is used to monitor welding current, and the welding current data are sent to PLC control module a.Other composition is identical with embodiment one with connected mode.
Embodiment three: this embodiment is that with embodiment one or two differences moving contact sensor G1, rivet sensor G2, stationary contact sensor G3, bonding pad sensor G4, height sensor H and angular transducer J adopt the optoelectronic switch sensor.E3S-GS15N optoelectronic switch sensor for the manufacturing of Leqing city Omron sensor factory.Pressure transducer F and pretightning force sensor Y are the SD-21R sensor that Leqing city Ou Te Electric Applicance Co., Ltd produces.Other composition is identical with embodiment one or two with connected mode.
Embodiment four: this embodiment is that with embodiment one or two differences moving contact sensor G1, rivet sensor G2, stationary contact sensor G3, bonding pad sensor G4, height sensor H and angular transducer J adopt linear displacement transducer; Described linear displacement transducer is used to measure the detection position data, and monitoring result is sent PLC control module a.Other composition is identical with embodiment one or two with connected mode.
Embodiment five: combine Fig. 1 that this embodiment is described; This embodiment is that circuit breaker for vehicle production monitoring method is to make each circuit breaker for vehicle all carry out following step 1 to ten in production run; Realization is to the real-time monitoring of production run, and said step 1 to ten is following:
Step 1: the sensor of circuit breaker for vehicle production monitoring system is arranged on bonding machine and the kludge;
Step 2: the position of the moving contact 2 of welding completion is detected through moving contact sensor G1; And workpiece sequence number and testing result sent to PLC control module a in real time; PLC control module a judges that moving contact 2 is whether on memory metal sheet 1 position of setting; If on the position of setting, it is qualified then to judge, and record moving contact 2 positions are qualified; If not on the position of setting, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 3: the position of the rivet 3 of welding completion is detected through rivet sensor G2; And workpiece sequence number and testing result sent to PLC control module a in real time; PLC control module a judges that rivet 3 is whether on memory metal sheet 1 position of setting; If on the position of setting, it is qualified then to judge, and the position of record rivet 3 is qualified; If not on the position of setting, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 4: in compacting, the memory metal sheet 1 of compacting is detected, and workpiece sequence number and testing result are sent to PLC control module a in real time through pressure transducer F;
Step 5: the pitch of arch of the memory metal sheet 1 of compacting completion is detected through height sensor H; And workpiece sequence number and testing result sent to PLC control module a in real time; Whether the pitch of arch that PLC control module a judge to detect obtains is in the altitude range of setting; If, it is qualified then to judge, and it is qualified to write down the height of the said pitch of arch; If do not exist, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 6: the position of the stationary contact 5 of welding completion is detected through stationary contact sensor G3; And workpiece sequence number and testing result sent to PLC control module a in real time; PLC control module a judges that stationary contact 5 is whether on first conducting strip, 4 positions of setting; If on the position of setting, it is qualified then to judge, and the position of record stationary contact 5 is qualified; If not on the position of setting, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 7: the position of the bonding pad 7 of welding completion is detected through bonding pad sensor G4; And workpiece sequence number and testing result sent to PLC control module a in real time; PLC control module a judges that bonding pad 7 is whether on second conducting strip, 6 positions of setting; If on the position of setting, it is qualified then to judge, and the position of record bonding pad 7 is qualified; If not on the position of setting, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 8: through angular transducer J second conducting strip, 6 windup-degrees are detected, and workpiece sequence number and testing result are sent to PLC control module a in real time;
Step 9: through pretightning force sensor Y the pretightning force between moving contact 2 and the stationary contact 5 is detected, and workpiece sequence number and testing result are sent to PLC control module a in real time;
Step 10: PLC control module a will receive the workpiece sequence number and send to computing machine b with the detection packing data; Computing machine b carries out correspondence according to the workpiece sequence number in the result data that receives with all testing results; And set up database, inquiry is transferred data through the Query Information in the Database Lists.
Embodiment six: this embodiment is that with embodiment five differences moving contact sensor G1, rivet sensor G2, stationary contact sensor G3, bonding pad sensor G4, height sensor H and angular transducer J all adopt linear displacement transducer; Described linear displacement transducer is used to measure the detection position data; Testing result is a position data; PLC control module a judges that according to said position data the detection position is whether on desired location; If the difference of detection position and desired location is less than or equal to 0.01mm, it is qualified then to judge, and the record detection position; If it is defective that the difference of detection position and desired location greater than 0.01mm, is then judged, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show.Other composition is identical with embodiment five with connected mode.
Embodiment seven: this embodiment is through computing machine b input operator and checker's information with embodiment four differences, and said operator and checker's information is write database.Other composition is identical with embodiment four with connected mode.
Embodiment eight: this embodiment is that with embodiment four differences Database Lists comprises the product type specification; The operator; Welding current; The checker; Precompression; Windup-degree; The torsional angle pulse; Whether the pitch of arch is in height of setting or detection data highly; The drift specification; Whether moving contact 2 is in the position of setting or the data of detection position; Whether rivet 3 is in the position of setting or the data of detection position; Stationary contact 5 whether at the data of position of setting or detection position and bonding pad 7 whether in the position of setting or the data of detection position.Other composition is identical with embodiment four with connected mode.
Content of the present invention is not limited only to the content of above-mentioned each embodiment, and the combination of one of them or several embodiments equally also can realize the purpose of inventing.
Claims (8)
1. circuit breaker for vehicle production monitoring system is characterized in that it comprises sensor groups, PLC control module (a) and computing machine (b);
Described sensor groups is made up of pressure transducer (F), moving contact sensor (G1), rivet sensor (G2), height sensor (H), angular transducer (J), stationary contact sensor (G3), bonding pad sensor (G4) and pretightning force sensor (Y);
Pressure transducer (F), the memory metal sheet (1) that is used for monitoring circuit breaker for vehicle is being processed to form arc process pressure;
Moving contact sensor (G1) is used to monitor on the position that the memory metal sheet (1) of circuit breaker for vehicle sets whether be welded with moving contact (2), and monitoring result is sent PLC control module (a);
Rivet sensor (G2) is used to monitor on the position that the memory metal sheet (1) of circuit breaker for vehicle sets whether be welded with rivet (3), and monitoring result is sent PLC control module (a);
Height sensor (H) is used to monitor the pitch of arch of the memory metal sheet (1) of circuit breaker for vehicle;
Stationary contact sensor (G3) is used to monitor on the position that first conducting strip (4) of circuit breaker for vehicle sets whether be welded with stationary contact (5), and monitoring result is sent PLC control module (a);
Bonding pad sensor (G4) is used to monitor on the position that second conducting strip (6) of circuit breaker for vehicle sets whether be welded with bonding pad (7), and monitoring result is sent PLC control module (a);
Angular transducer (J) is used to monitor the windup-degree of second conducting strip (6) of circuit breaker for vehicle;
Pretightning force sensor (Y) is used to monitor the moving contact (2) of circuit breaker for vehicle and the pretightning force between the stationary contact (5);
PLC control module (a); Be used to receive the monitoring result that pressure transducer (F), moving contact sensor (G1), rivet sensor (G2), height sensor (H), angular transducer (J), stationary contact sensor (G3), bonding pad sensor (G4) and pretightning force sensor (Y) are sent; And received monitoring result judged; Judge that monitoring result is in normal range; Then packing data sends to computing machine (b), judges monitoring result not in normal range, then sends warning message and gives computing machine (b);
Computing machine (b) is used to receive the packing data structure database that PLC control module (a) sends, and preferential display alarm information; Also be used in database search query information and demonstration.
2. circuit breaker for vehicle production monitoring system according to claim 1 is characterized in that also comprising reometer, is used to monitor welding current, and the welding current data are sent to PLC control module (a).
3. circuit breaker for vehicle production monitoring system according to claim 1 and 2 is characterized in that moving contact sensor (G1), rivet sensor (G2), stationary contact sensor (G3), bonding pad sensor (G4), height sensor (H) and angular transducer (J) adopt the optoelectronic switch sensor.
4. circuit breaker for vehicle production monitoring system according to claim 1 and 2; It is characterized in that moving contact sensor (G1), rivet sensor (G2), stationary contact sensor (G3), bonding pad sensor (G4), height sensor (H) and angular transducer (J) adopt linear displacement transducer; Described linear displacement transducer is used to measure the detection position data, and monitoring result is sent PLC control module (a).
5. circuit breaker for vehicle production monitoring method is characterized in that, makes each circuit breaker for vehicle all carry out following step 1 to ten in production run, realizes the real-time monitoring to production run, and said step 1 to ten is following:
Step 1: the sensor of circuit breaker for vehicle production monitoring system is arranged on bonding machine and the kludge;
Step 2: the position of the moving contact (2) of welding completion is detected through moving contact sensor (G1); And workpiece sequence number and testing result sent to PLC control module (a) in real time; PLC control module (a) judges that moving contact (2) is whether on memory metal sheet (1) position of setting; If on the position of setting, it is qualified then to judge, and record moving contact (2) position is qualified; If not on the position of setting, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 3: the position of the rivet (3) of welding completion is detected through rivet sensor (G2); And workpiece sequence number and testing result sent to PLC control module (a) in real time; PLC control module (a) judges that rivet (3) is whether on memory metal sheet (1) position of setting; If on the position of setting, it is qualified then to judge, and the position of record rivet (3) is qualified; If not on the position of setting, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 4: in compacting, detect, and workpiece sequence number and testing result are sent to PLC control module (a) in real time through the memory metal sheet (1) of pressure transducer (F) to compacting;
Step 5: detect through the pitch of arch of height sensor (H) to the memory metal sheet (1) of compacting completion; And workpiece sequence number and testing result sent to PLC control module (a) in real time; Whether the pitch of arch that PLC control module (a) judge to detect obtains is in the altitude range of setting; If, it is qualified then to judge, and it is qualified to write down the height of the said pitch of arch; If do not exist, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 6: the position of the stationary contact (5) of welding completion is detected through stationary contact sensor (G3); And workpiece sequence number and testing result sent to PLC control module (a) in real time; PLC control module (a) judges that stationary contact (5) is whether on first conducting strip (4) position of setting; If on the position of setting, it is qualified then to judge, and the position of record stationary contact (5) is qualified; If not on the position of setting, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 7: the position of the bonding pad (7) of welding completion is detected through bonding pad sensor (G4); And workpiece sequence number and testing result sent to PLC control module (a) in real time; PLC control module (a) judges that bonding pad (7) is whether on second conducting strip (6) position of setting; If on the position of setting, it is qualified then to judge, and the position of record bonding pad (7) is qualified; If not on the position of setting, then judge defectively, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show;
Step 8: through angular transducer (J) second conducting strip (6) windup-degree is detected, and workpiece sequence number and testing result are sent to PLC control module (a) in real time;
Step 9: through pretightning force sensor (Y) pretightning force between moving contact (2) and the stationary contact (5) is detected, and workpiece sequence number and testing result are sent to PLC control module (a) in real time;
Step 10: PLC control module (a) will receive the workpiece sequence number and the testing result packing sends to computing machine (b); Computing machine (b) carries out correspondence according to the workpiece sequence number in the result data that receives with all testing results; And set up database, inquiry is transferred data through the Query Information in the Database Lists.
6. circuit breaker for vehicle production monitoring method according to claim 5; It is characterized in that moving contact sensor (G1), rivet sensor (G2), stationary contact sensor (G3), bonding pad sensor (G4), height sensor (H) and angular transducer (J) all adopt linear displacement transducer; Described linear displacement transducer is used to measure the detection position data; Testing result is a position data, and PLC control module (a) judges that according to said position data the detection position is whether on desired location, if the difference of detection position and desired location is less than or equal to 0.01mm; It is qualified then to judge, and the record detection position; If it is defective that the difference of detection position and desired location greater than 0.01mm, is then judged, send warning message, and preferentially send to the workpiece sequence number of weldment and testing result on the computing machine and show.
7. according to claim 5 or 6 described circuit breaker for vehicle production monitoring methods, it is characterized in that through computing machine (b) input operator and checker's information, and said operator and checker's information is write database.
8. circuit breaker for vehicle production monitoring method according to claim 7, it is characterized in that Database Lists comprise product type specification, operator, welding current, checker, precompression, windup-degree, torsional angle pulse, the pitch of arch whether in the height of setting or the data, drift specification, moving contact (2) that detect height whether in the data of position of setting or detection position, rivet (3) whether in the data of position of setting or detection position, stationary contact (5) whether at the data of position of setting or detection position and bonding pad (7) whether in the position of setting or the data of detection position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102743710A CN101937227B (en) | 2010-09-07 | 2010-09-07 | Vehicle circuit breaker production monitoring system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102743710A CN101937227B (en) | 2010-09-07 | 2010-09-07 | Vehicle circuit breaker production monitoring system and method |
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| CN101937227A CN101937227A (en) | 2011-01-05 |
| CN101937227B true CN101937227B (en) | 2012-02-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2725316B1 (en) * | 1994-09-29 | 1996-11-22 | Gec Alsthom T & D Sa | SELF-MONITORING CIRCUIT, ESPECIALLY ELECTRICAL EQUIPMENT AND PARTICULARLY A HIGH VOLTAGE CIRCUIT BREAKER AT SF6 |
| CN2893893Y (en) * | 2006-04-06 | 2007-04-25 | 北海银河高科技产业股份有限公司 | High-voltage circuit breaker pragram operating instrument |
| US20080142486A1 (en) * | 2006-12-19 | 2008-06-19 | Nataniel Barbosa Vicente | Circuit breaker with adjustable arc-flash protection and wireless sensor and method of use |
| CN201138450Y (en) * | 2007-12-25 | 2008-10-22 | 青岛四方车辆研究所有限公司 | Passenger car electricity integrated control cabinet |
| CN201340538Y (en) * | 2008-12-18 | 2009-11-04 | 于国安 | PLC monitoring cabinet of hydraulic hoist |
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