CN201319328Y - Permanent-magnet mechanism controller - Google Patents
Permanent-magnet mechanism controller Download PDFInfo
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- CN201319328Y CN201319328Y CNU2008201239787U CN200820123978U CN201319328Y CN 201319328 Y CN201319328 Y CN 201319328Y CN U2008201239787 U CNU2008201239787 U CN U2008201239787U CN 200820123978 U CN200820123978 U CN 200820123978U CN 201319328 Y CN201319328 Y CN 201319328Y
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Abstract
The utility model discloses a permanent-magnet mechanism controller, which comprises a tripping coil and a closing coil as well as a position detection circuit, a drive control circuit, a singlechip and a keyboard, wherein, the detection circuit adopts a Hall current sensor and is used for collecting the current waveform signals of the tripping coil and the closing coil, and the current waveform signals are converted into pressure signals and sent to the singlechip through a conditioning circuit; the keyboard is used for inputting switch-on/off commands; and the singlechip analyzes and compares the current waveform signals with the reference current waveform, and then outputs the switch-on/off driving signals to the tripping coil and the closing coil through the drive control circuit. The controller provided by the utility model has the advantages that due to the adoption of comparison technology of the current waveform of the closing and the tripping coils, the motion reliability of a breaker is improved; and the current waveform height of the closing and the tripping coils can not be saturated, so that the aging degree of the coils is reduced and the service life of the coils of the permanent-magnet mechanism is prolonged.
Description
Technical field
The utility model relates to control device, particularly a kind of permanent magnet mechanism controller.
Background technology
At present, the control mode of known permanent magnetic actuator vacuum circuit breaker, the employing D.C. contactor control model that has, this control method is simple, but the control time is longer, and the electric current on the D.C. contactor coil cuts off by the auxiliary contact of circuit breaker, and the electric current on the permanent magnet mechanism coil will can cut off after reaching the saturation current of coil, this is very big to the aging of coil and influence in useful life, and it is intelligent that its control degree can't reach.Another kind is to adopt director mode, and this controller is to be used as judging the foundation of permanent magnet mechanism location status by the position near the contact action of switch, and controller can be carried out action command after detecting position state signal.Because the position is the electronic type product near switch, power supply power supply need be arranged for a long time, so often having near switch, the position burnt or the phenomenon of short circuit takes place, but can't regular event when causing circuit breaker to move, influenced power supply reliability.
The utility model content
The purpose of this utility model is the defective that overcomes the existing controller malfunction of circuit breaker, tripping and easily burn branch, closing coil, a kind of reliability that can improve the circuit breaker action is provided, reduce the coil degree of aging, the permanent magnet mechanism controller in extension coil useful life.
For achieving the above object, the utility model permanent magnet mechanism controller, comprise the testing circuit of switching winding and closing coil and branch thereof, feed motion position and branch, combined floodgate Drive and Control Circuit, also comprise a single-chip microcomputer and keyboard thereof, wherein said testing circuit adopts Hall current sensor, be used to gather the current waveform signal of switching winding and closing coil, and current waveform signal changed into voltage signal, deliver to single-chip microcomputer then through modulate circuit; Described keyboard is used for input branch, reclosing command; Described single-chip microcomputer be used for the current waveform detection signal and reference current waveshape is analyzed and is contrasted and by minute, the combined floodgate Drive and Control Circuit will divide, the combined floodgate drive signal exports switching winding and closing coil respectively to.
Wherein said branch, combined floodgate Drive and Control Circuit are provided with a pair of high-power IGBT power output unit, high-power IGBT power output unit is controlled I/O by combined floodgate control I/O and separating brake that second photoisolator is connected to single-chip microcomputer respectively, and high-power IGBT power output unit links to each other with closing coil with switching winding respectively.
The utility model permanent magnet mechanism controller, wherein said single-chip microcomputer is provided with the communication interface of communicating by letter with outer PC, and communication interface adopts the RJ45 interface socket.
The utility model permanent magnet mechanism controller also comprises power circuit, clock circuit, LCD and expansion output circuit, and described power circuit, clock circuit, LCD and expansion output circuit interconnect with single-chip microcomputer respectively.
The utility model permanent magnet mechanism controller, wherein said keyboard are provided with separating brake key and combined floodgate key, and are provided with the input information testing circuit that is used for described separating brake key and combined floodgate key; Described being provided with is used for the closing of sense switch position, separating brake grating, and be used for describedly closing, the positional information testing circuit of separating brake grating, described input information testing circuit is connected with described single-chip microcomputer by first photoisolator with the positional information testing circuit.
The utility model permanent magnet mechanism controller, wherein said expansion output circuit is provided with closing relay, separating brake relay and alarm relay, and output node resistance was 0 when each relay extended out output, did not have relay release when extending out output.
The utility model permanent magnet mechanism controller, wherein said power circuit comprises that external power source detects modulate circuit, the AC/DC converter, the one DC/DC converter, the 2nd DC/DC converter and linear stabilized power supply LDO, external power source detects modulate circuit and links to each other with single-chip microcomputer with linear stabilized power supply LDO, the AC/DC converter links to each other respectively with the 2nd DC/DC converter with a DC/DC converter, the one DC/DC converter links to each other with linear stabilized power supply LDO, wherein the AC/DC converter becomes the 12V power supply with the 220V power supply, the one DC/DC converter becomes the 12V power supply+5V power supply and be the single-chip microcomputer power supply by linear stabilized power supply LDO, the 2nd DC/DC converter becomes the 12V power supply ± 15V and 15V power supply, wherein ± and the 15V power supply is the power supply of high-power IGBT power output unit, the 15V power supply is the keyboard power supply.
The advantage of the utility model permanent magnet mechanism controller is: owing to adopted on/off switch coil current waveform comparison technology, so the reliable in action of circuit breaker improves greatly, avoided damaging the shortcoming that back circuit breaker can not regular event because of position switch.The current waveform height because the current waveform height on branch, the closing coil can not reach capacity so reduced the degree of aging of coil, has prolonged the useful life of permanent magnet mechanism coil.
Be elaborated with reference to accompanying drawing below in conjunction with embodiment, so that the purpose of this utility model, feature and advantage are had deep understanding.
Description of drawings
Fig. 1 is the block diagram of the utility model permanent magnet mechanism controller;
Fig. 2 is the circuit diagram of Hall current sensor;
Fig. 3 is the circuit diagram of branch, combined floodgate Drive and Control Circuit;
Fig. 4 is the circuit diagram of expansion output circuit;
Fig. 5 is the circuit diagram of input information testing circuit;
Fig. 6 is the circuit diagram of positional information testing circuit;
Fig. 7 is the circuit diagram of power circuit.
Embodiment
With embodiment technical scheme is elaborated below.
The utility model permanent magnet mechanism controller provides a kind of control model and control theory of brand-new type, by branch, the feed motion that detection is closed, the switching winding current waveform is controlled permanent magnetic actuator vacuum circuit breaker.Increased the current waveform acquisition function on the basis of first generation controller, current waveform relatively reaches analytic function and automatic inspection function.
With reference to Fig. 1, the utility model permanent magnet mechanism controller comprises switching winding 101 and closing coil 102, single-chip microcomputer 2 and keyboard 5 thereof, clock circuit 4, LCD 7, Hall current sensor 9, branch, combined floodgate Drive and Control Circuit 11, expansion output circuit 10, communication interface 6 and power circuit 12.Power circuit 12, clock circuit 4, keyboard 5, LCD 7, Hall current sensor and modulate circuit 9, branch, combined floodgate Drive and Control Circuit 11, expansion output circuit 10 interconnects with single-chip microcomputer 2 respectively.
Wherein, set up resume for system's operation, an effective time coordinate is provided by clock circuit 4.Adopt two clock systems, one is the single-chip microcomputer internal clocking, and one is the external clock crystal, the ratio of precision internal clocking height of external clock.When system start-up, at first use internal clocking, detect external clock then, if external clock exists and be normal, automatically switch to external clock, if in the program operation process, external clock lost efficacy, Automatic Program switches to internal clocking.
Keyboard 5 is set up separating brake key, combined floodgate key and is used for the position transducer that branch, the detection of combined floodgate button and the position of the switch are detected, these position transducers are connected to single-chip microcomputer 2 by first photoisolator 51, with the input of finishing branch, combined floodgate key and the antijamming capability that improves branch, combined floodgate key.
Finish and the communicating by letter of external PC by communication interface 6.Interface socket adopts the RJ45 seat, behind interface convertor, can be crosslinked with the single-chip microcomputer 2 of switch platform, and realize telemonitoring, control to switch.Also finish simultaneously and the communicating by letter of LCD 7.The Control on Communication command protocols is identical with the communication of module PC.
The utility model permanent magnet mechanism controller, Hall current sensor and modulate circuit 9 pass through the electric current of Hall linear circuit induction branch, closing coil, and current signal is changed into voltage signal, deliver to single-chip microcomputer 2 after the conditioning, finish current detecting.
With reference to the Hall current sensor of Fig. 2 and the circuit diagram of modulate circuit, left-hand broken line block diagram part, its central component is Hall current integrated circuit (ACS755 of an Allegro company series), from outside input+the 220V external power source is by the IP+ input of Hall, export from IP-, through dividing, closing coil, IGBT gets back to power supply-end, divide, close a floodgate and patrol and examine the voltage signal that the electric current that produces in the process is directly proportional with electric current in the output of the Vout of device end after by the hall sensing conversion, this voltage signal send the A/D sampling channel of CPU, by CPU to the current waveform sampling analysis after, draw branch, the situation that puts in place of closing a floodgate.
The branch of the utility model permanent magnet mechanism controller, combined floodgate Drive and Control Circuit 11 are provided with a pair of high-power IGBT power output unit 103,104, high-power IGBT power output unit 103,104 is connected to the combined floodgate control I/O and the separating brake control I/O of single-chip microcomputer 2 respectively by second photoisolator 105, high-power IGBT power output unit 103,104 links to each other with closing coil 102 with switching winding 101 respectively, and branch, combined floodgate drive signal export switching winding 101 and closing coil 102 respectively to.
Branch, combined floodgate Drive and Control Circuit 11 are finished the locking of driving power negative pressure, photoelectric isolating circuit, high-power IGBT, and circuit such as absorption circuit manage, and finally finish the control to combined floodgate, separating brake.Drive when requiring at no divide-shut brake, IGBT gate driving power supply be-10v extremely-13v between, when CPU branch, reclosing command, close negative pressure automatically, given satisfactory direct impulse on the IGBT grid makes this road IGBT open-minded.
With reference to the branch of Fig. 3, the circuit diagram of combined floodgate Drive and Control Circuit, divide-shut brake control is divided into: IGBT branch, close a floodgate control I/O, second photoisolator 105 and divide-shut brake high-power IGBT power output unit 103,104 3 parts.
The control I/O 1.IGBT divide, close a floodgate
When CPU has not detected branch, combined floodgate request, the P10 mouth is restricted to high level ,+15V voltage can not flow into next driving stage of IGBT by triode N0.
When CPU has detected branch, combined floodgate request, the P10 mouth is restricted to low level ,+15V voltage flows into next driving stage of IGBT (branch, combined floodgate photoelectricity isolated controlling) by triode N0.
2. second photoisolator 105
When CPU had not detected the combined floodgate request, it is low that CPU puts P11, and P12 puts height, and reverse blocking GO13 forms the secondary blocking-up of right+15V voltage; CPU puts height with P32, and-15V process P1J triode is delivered to the grid of IGBT1, locking combined floodgate IGBT1.
When CPU has detected when closing a floodgate request, it is low that CPU at first makes P12 put, the IGBT locking energy of cancellation-15V, and CPU makes P11 put height then, and P12 puts low, and GO13 exports driving N 1 conducting, and+15V is transferred to the grid of IGBT1, opens combined floodgate IGBT1.
Separating brake photoelectricity isolation control circuit structure is identical with combined floodgate, repeats no more.
3. divide-shut brake high-power IGBT power output unit 103,104
When no reclosing command, the negative voltage on the divide-shut brake IGBT grid about maintenance-10V is to improve the antijamming capability of IGBT.When reclosing command, deliver to the grid of IGBT1 by the positive driving pulse of combined floodgate about prime driver module general+13V, make the IGBT conducting, outside+220V source current through closing line circle+inflow closing coil-, flow into the 220V earth-return through IGBT1 again, realize the driving of closing coil.After combined floodgate put in place, CPU was added in the grid of IGBT1 by control circuit general-10V voltage, realizes the shutoff to IGBT1, thereby the closing coil no current is flow through.RY1, R51 and C41 constitute absorption circuit, suppress the high pressure that produces when IGBT1 turn-offs closing coil (perception).
The separating brake output circuit structure repeats no more with the combined floodgate part.
With reference to the circuit diagram of the input information testing circuit of Fig. 5, detecting with the combined floodgate key is example, when the combined floodgate key is not pressed, GOK1, GOK2 optocoupler light-emitting diode no current flows through, two optocoupler outlet side triodes open circuit, go the P20 of CPU to be output as high level, CPU does not process.When the combined floodgate key is pressed, GOK1, GOK2 optocoupler light-emitting diode has electric current to flow through, the conducting simultaneously of two optocoupler outlet side triodes goes the P20 of CPU to be output as low level, and CPU has detected the request of combined floodgate, this moment, CPU sent one group of code from P33, if it is identical that the code that receives of P20 and CPU send, thinking that the request of combined floodgate is effective, finish the detection and the affirmation of combined floodgate key.
DK1 stops the impact of forward disturbing pulse to GOK2, and DK2 stops the impact of forward disturbing pulse to GOK3, the disturbing pulse on DK3, the DK4 inhibition button circuit, CK1, CK2, RK3 finish the filtering to disturbing pulse.
The testing circuit structure of separating brake key is identical with the combined floodgate key, and just the device number difference repeats no more.
With reference to the circuit diagram of the positional information testing circuit of Fig. 6, be example with the detection of combined floodgate grating, when combined floodgate grating access failure, GO3 optocoupler light-emitting diode no current flows through, and optocoupler outlet side triode open circuit goes the P22 of CPU to be output as high level, and CPU does not process.When the combined floodgate grating was connected, GO3 optocoupler light-emitting diode had electric current to flow through, the conducting of optocoupler outlet side triode, go the P22 of CPU to be output as low level, CPU is after going dithering process, if P22 also keeps low level, think that then the combined floodgate grating connects, otherwise be the disconnection of combined floodgate grating.
The testing circuit structure of separating brake grating is identical with the detection of combined floodgate grating, and just the device number difference repeats no more.
The utility model permanent magnet mechanism controller expansion output circuit 10 outwards provides combined floodgate, separating brake and alarms three kinds and extends out output.When on off state is combined floodgate, inside modules closing relay closure, extending out output node resistance is 0, when disconnecting when closing a floodgate, relay discharges.When on off state is separating brake, inside modules separating brake relay closes, extending out output node resistance is 0, when separating brake disconnected, relay discharged.When on off state is fault, inside modules alarm relay closure, extending out output node resistance is 0, when fault was eliminated, relay alarm contact discharged.
With reference to the circuit diagram of the expansion output circuit of Fig. 4, combined floodgate, separating brake and alarm three kinds to extend out output circuit structure identical are output as example with combined floodgate information below.
When CPU analyzes combined floodgate information when effective, P35 mouth line is drawn be low level ,+5V power supply flows through GO10 optocoupler light-emitting diode through R32, the conducting of GO10 optocoupler outlet side triode, the conducting of N6 triode ,+12V voltage is added in LED1, the R30 two ends, make LED luminous, indication is closed a floodgate effectively, simultaneously+and 12V voltage also is added in relay J D1 line bag two ends, makes the relay adhesive, CZ1-15 and CZ1-16 conducting realize extending out output effectively.
To analyze combined floodgate information invalid as CPU, P35 is changed to high level, GO10 ends, N6 also ends, and does not have electric current to flow through combined floodgate indication diode (LED) 1, and LED1 is in and extinguishes state, also no current flows through information output relay JD1 simultaneously, relay discharges, and state is open circuit between CZ1-15 and CZ1-16 terminal, close a floodgate extend out export invalid.
Power circuit comprises that external power source detects modulate circuit 8, AC/DC converter 1-1, a DC/DC converter 1-2, the 2nd DC/DC converter 1-3 and linear stabilized power supply LDO1-4.At first detect 8 pairs of external power sources of modulate circuit and isolate sampling, realize detection, condition judgement and voltage marking external power source by external power source.Wherein external power source detection modulate circuit 8 links to each other with single-chip microcomputer 2 with LDO linear stabilized power supply 1-4, AC/DC converter 1-1 links to each other respectively with the 2nd DC/DC converter 1-3 with a DC/DC converter 1-2, and a DC/DC converter 1-2 links to each other with linear stabilized power supply LDO1-4.
Wherein AC/DC converter 1-1 becomes the 12V power supply with the 220V power supply, the one DC/DC converter 1-2 becomes the 12V power supply+5V power supply and be single-chip microcomputer 2 power supplies by LDO linear stabilized power supply 1-4, the 2nd DC/DC converter 1-3 becomes the 12V power supply ± 15V and 15V power supply, wherein ± and the 15V power supply is 103,104 power supplies of high-power IGBT power output unit, the 15V power supply is keyboard 5 power supplies.
With reference to the circuit diagram of the power circuit of Fig. 7, wherein, AC/DC converter 1-1 is that 220V (or 110V) changes the 12V direct current, and 220V1 voltage is through C1, I1 behind the π type filter circuit that C2 forms, enters AC/DC conversion module conversion back output+12V voltage, supply with M2 respectively, M3, M4 module.
The one DC/DC converter 1-2 is the CPU power supply:
12V voltage is through CS2, I3, C5 behind the π type filter circuit that C6 forms, enters the M2 module, the M2 module with 12V voltage become isolation+5V output, use for the CPU peripheral components, with the T1 integrated stable voltage circuit (LDO linear stabilized power supply 1-4) 5V voltage stabilizing is become 3.3V simultaneously, for CPU core (mark 3.3V1), and A/D conversion reference voltage uses (mark AV+), loop (mark GND) independently.
The 2nd DC/DC converter 1-3 is that 12V changes other direct current, comprising:
1, keyboard power conversion:
12V voltage send M3 power module after C55 filtering, output+15V power supply behind isolated variable is used for keyboard circuit (mark 15V_KY), independently loop (mark 0V_KY)
2, IGBT drives and the locking power conversion:
12V voltage send M4 power module after C52 filtering, behind isolated variable output+15V and-the 15V power supply ,+15V is used for the IGBT conducting and drives ,-15V is used for that IGBT closes and is anti-interference, IGBT drives and the locking power supply is loop (mark 0V_QD) independently.
In the utility model permanent magnet mechanism controller, each socket is defined as follows:
Table 1: socket CZ1 definition
Table 2: socket CZ2 definition
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Power supply (+) | Power supply (-) | Power supply (-) | Power supply (+) | Close a floodgate (+) | Separating brake (+) | Close a floodgate (-) | Separating brake (-) |
Table 3: socket CZ3 definition
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| +3.3V | GND | GND | TCK | TMS | TDO | TDI | Empty | GND | Empty |
Table 4: socket CZ4 definition
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| +5VS | Shielding | H_RX | L_RX | H_TX | L_TX | Shielding | Shielding |
With the utility model permanent magnet mechanism controller embodiment its course of work is described below.
The Hall current sensor 9 of the utility model permanent magnet mechanism controller is gathered switching winding 101 and closing coil 102 current waveform signal on the coil when charged, and through modulate circuit current waveform signal is changed into voltage signal, delivers to single-chip microcomputer 2 then.When with keyboard 5 input branches, reclosing command, after single-chip microcomputer 2 receives the current waveform signal of Hall current sensor 9, analyze and contrast by CPU, whether consistent with reference current waveshape, if current waveform is in reference current waveshape bag captive line, the permanent magnet mechanism action that then is judged to be circuit breaker is normal.Simultaneously, controller also will to close, the separating brake position detects.Making process finishes current waveform and position switch all normally is judged to be combined floodgate normally; The normal position switch of switching current waveform is undesired then reports to the police; The undesired separating brake immediately of switching current waveform; Receive separating brake in the making process and instruct separating brake immediately.Separating brake instruction is preferential, and it is normal that separating brake current waveform and position switch signal all normally are judged to be separating brake.Lack for the moment at both, carry out the separating brake action immediately once, do not detect position signalling when dividing waveform again, the output of warning is promptly arranged if detect.Three wrong operators then can be locked false command, automatically resets when having carried out right instructions.
Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineers and technicians in this area make the technical solution of the utility model all should fall in the definite protection range of claims of the present utility model.
Claims (7)
1. permanent magnet mechanism controller, comprise the testing circuit of switching winding (101) and closing coil (102) and branch thereof, feed motion position and branch, combined floodgate Drive and Control Circuit (11), it is characterized in that: also comprise a single-chip microcomputer (2) and keyboard (5) thereof, wherein said testing circuit adopts Hall current sensor (9), be used to gather the current waveform signal of described switching winding (101) and closing coil (102), and current waveform signal is changed into voltage signal through modulate circuit, deliver to described single-chip microcomputer (2) then; Described keyboard (5) is used for input branch, reclosing command; Described single-chip microcomputer (2) be used for the current waveform detection signal and reference current waveshape is analyzed and is contrasted and by described branch, combined floodgate Drive and Control Circuit (11) will divide, the combined floodgate drive signal exports described switching winding (101) respectively to and closing coil (102).
2. permanent magnet mechanism controller according to claim 1, it is characterized in that: wherein said branch, combined floodgate Drive and Control Circuit are provided with a pair of high-power IGBT power output unit (103,104), described high-power IGBT power output unit (103,104) is controlled I/O by combined floodgate control I/O and separating brake that second photoisolator (105) is connected to described single-chip microcomputer (2) respectively, and described high-power IGBT power output unit (103,104) links to each other with closing coil (102) with switching winding (101) respectively.
3. permanent magnet mechanism controller according to claim 1 and 2 is characterized in that: wherein said single-chip microcomputer (2) is provided with the communication interface (6) of communicating by letter with outer PC, and described communication interface (6) adopts the RJ45 interface socket.
4. permanent magnet mechanism controller according to claim 3, it is characterized in that: also comprise power circuit (12), clock circuit (4), LCD (7) and expansion output circuit (10), described power circuit (12), clock circuit (4), LCD (7) and expansion output circuit (10) interconnect with described single-chip microcomputer (2) respectively.
5. permanent magnet mechanism controller according to claim 4 is characterized in that: wherein said keyboard (5) is provided with separating brake key and combined floodgate key, and is provided with the input information testing circuit (52) that is used for described separating brake key and combined floodgate key; Described separating brake key and combined floodgate key are respectively equipped with and are used to detect the closing of this key switch position, separating brake grating, and be used for describedly closing, the positional information testing circuit (53) of separating brake grating, described input information testing circuit (52) is connected with described single-chip microcomputer (2) by first photoisolator (51) with positional information testing circuit (53).
6. permanent magnet mechanism controller according to claim 5, it is characterized in that: wherein said expansion output circuit (10) is provided with closing relay, separating brake relay and alarm relay, output node resistance was 0 when each relay extended out output, did not have relay release when extending out output.
7. permanent magnet mechanism controller according to claim 6, it is characterized in that: wherein said power circuit (12) comprises that external power source detects modulate circuit (8), AC/DC converter (1-1), the one DC/DC converter (1-2), the 2nd DC/DC converter (1-3) and linear stabilized power supply LDO (1-4), described external power source detects modulate circuit (8) and links to each other with described single-chip microcomputer (2) with linear stabilized power supply LDO (1-4), described AC/DC converter (1-1) links to each other respectively with the 2nd DC/DC converter (1-3) with a described DC/DC converter (1-2), a described DC/DC converter (1-2) links to each other with described linear stabilized power supply LDO (1-4), wherein said AC/DC converter (1-1) becomes the 12V power supply with the 220V power supply, a described DC/DC converter (1-2) becomes the 12V power supply+5V power supply and be described single-chip microcomputer (2) power supply by described linear stabilized power supply LDO (1-4), described the 2nd DC/DC converter (1-3) becomes the 12V power supply ± 15V and 15V power supply, wherein ± the 15V power supply is described high-power IGBT power output unit (103,104) power supply, 15V power supply are described keyboard (5) power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201239787U CN201319328Y (en) | 2008-12-01 | 2008-12-01 | Permanent-magnet mechanism controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201239787U CN201319328Y (en) | 2008-12-01 | 2008-12-01 | Permanent-magnet mechanism controller |
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| CN201319328Y true CN201319328Y (en) | 2009-09-30 |
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| CNU2008201239787U Expired - Lifetime CN201319328Y (en) | 2008-12-01 | 2008-12-01 | Permanent-magnet mechanism controller |
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| CN (1) | CN201319328Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477903B (en) * | 2008-12-01 | 2011-04-13 | 司正生 | Permanent magnet mechanism controller |
| CN102348307A (en) * | 2010-07-30 | 2012-02-08 | 深圳市桑达实业股份有限公司 | LED street lamp and driving power supply circuit thereof |
| CN106707903A (en) * | 2017-03-16 | 2017-05-24 | 扬州新概念电气有限公司 | Novel permanent magnet mechanism controller for high-voltage circuit breaker |
-
2008
- 2008-12-01 CN CNU2008201239787U patent/CN201319328Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477903B (en) * | 2008-12-01 | 2011-04-13 | 司正生 | Permanent magnet mechanism controller |
| CN102348307A (en) * | 2010-07-30 | 2012-02-08 | 深圳市桑达实业股份有限公司 | LED street lamp and driving power supply circuit thereof |
| CN102348307B (en) * | 2010-07-30 | 2014-04-09 | 深圳市桑达实业股份有限公司 | LED street lamp and driving power supply circuit thereof |
| CN106707903A (en) * | 2017-03-16 | 2017-05-24 | 扬州新概念电气有限公司 | Novel permanent magnet mechanism controller for high-voltage circuit breaker |
| CN106707903B (en) * | 2017-03-16 | 2023-05-16 | 扬州新概念电气有限公司 | Novel permanent magnet mechanism controller of high-voltage circuit breaker |
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