CN104882855A - Comprehensive protector for intelligent motor - Google Patents
Comprehensive protector for intelligent motor Download PDFInfo
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- CN104882855A CN104882855A CN201510325944.0A CN201510325944A CN104882855A CN 104882855 A CN104882855 A CN 104882855A CN 201510325944 A CN201510325944 A CN 201510325944A CN 104882855 A CN104882855 A CN 104882855A
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Abstract
The invention relates to a comprehensive protector for an intelligent motor, and the protector comprises a power supply unit, an electric leakage protection unit, a remote start and stop unit, a remote controller learning and matching unit, and an overcurrent protection and overcurrent setting unit, wherein the power supply unit, the electric leakage protection unit, the remote controller start and stop unit, the remote learning and matching unit and the overcurrent protection and overcurrent setting unit are connected in series. The power supply unit supplies power to the electric leakage protection unit, the remote start and stop unit, the remote controller learning and matching unit and the overcurrent protection and overcurrent setting unit. When overcurrent appears in a motor in operation or phase loss happens to one phase of a power supply circuit, the overcurrent protection and overcurrent setting unit and the electric leakage protection unit are started. The protection has functions of electric leakage, phase loss, overcurrent and remote control, provides an electric leakage protection and remote control switch and a function of overcurrent protection, and meets the demands of a market to great extent.
Description
Technical field
The present invention relates to protector technical field, more particularly, relate to a kind of intelligent electric machine comprehensive protection device.
Background technology
Comprehensive protector of motor mainly collects electric leakage, phase shortage, overcurrent and long-range remote control function.
Therefore, prior art urgently has greatly improved.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, a kind of intelligent electric machine comprehensive protection device is provided, comprise: display module and supply module, described wireless wrist watch also comprises: it is characterized in that, comprising: the study of the Power supply unit be connected in series, residual current protective unit, remote control start and stop unit, remote controller and pairing unit, overcurrent protection and overcurrent setup unit;
Wherein, the study of described Power supply unit, residual current protective unit, remote control start and stop unit, remote controller and pairing unit, overcurrent protection and overcurrent setup unit; described Power supply unit is residual current protective unit, the study of remote control start and stop unit, remote controller and pairing unit, overcurrent protection and overcurrent setup unit are powered; when operating motor occurs having one to occur phase shortage mutually in overcurrent or supply line, start overcurrent protection and overcurrent setup unit, residual current protective unit.
Described Power supply unit two-terminal 1 and 2 in relay J 1 is powered to transformer B1380VAC; transformation is the direct current 12V power supply that described intelligent electric machine comprehensive protection device needs; transformer B1 output 3; 4 export 12VAC power supply; again through bridge rectifier diode D1, diode D2, diode D6, diode D7 be direct current; level and smooth direct current is filtered into through electric capacity C8; direct current 12V is direct current 5V through three terminal regulator Q1 voltage stabilizing again, for study and the pairing unit of described remote control start and stop unit, remote controller.
Described residual current protective unit is coil L1 when to carry out perception zero sequence phase current be not 0, and coil L1 exports alternating signal, and during assembling, ABC three-phase is through coil L1.
The remote control reception module J 4 of described remote control start and stop unit receives the P6.0 port of next wireless data signal through single-chip microprocessor IC2, be input to single-chip microprocessor IC2 and carry out decode operation, the code solved is consistent with the password that remote controller sends and control code, then compares with the data be stored in memory IC 3.
The study of described remote controller and pairing unit learn at most typing ten remote controllers, and when learning typing the 11 remote controller, first remote controller ceases to be in force automatically.
In described overcurrent protection and overcurrent setup unit overcurrent protection by mutual inductor coil L2, mutual inductor coil L3, mutual inductor coil L4 as detecting element; A B C three-phase output line all passes mutual inductor coil L2, mutual inductor coil L3, mutual inductor coil L4; the power supply of overcurrent protection its main operational amplifier IC1 is powered by mutual inductor coil L2, mutual inductor coil L3, mutual inductor coil L4; the operating voltage of operational amplifier IC1 is 1.8V-36VDC; it is 1.8VDC that these three mutual inductors obtain voltage from A B C three-phase, and corresponding load is 1KW.
Implement intelligent electric machine comprehensive protection device of the present invention, have following beneficial effect: have electric leakage, phase shortage, overcurrent and long-range remote control function, and provide earth leakage protective and remote control switch, the function of overcurrent protection, is applicable to market demand to a great extent.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the overall principle schematic of intelligent electric machine comprehensive protection device of the present invention.
Fig. 2 is the principle schematic of the overcurrent protection of intelligent electric machine comprehensive protection device of the present invention.
Fig. 3 is the ground protection circuit diagram of intelligent electric machine comprehensive protection device of the present invention.
Embodiment
As shown in Figure 1, in the intelligent electric machine comprehensive protection device that first embodiment of the invention provides, at least comprise, the study of the Power supply unit be connected in series, residual current protective unit, remote control start and stop unit, remote controller and pairing unit, overcurrent protection and overcurrent setup unit; Wherein, the study of described Power supply unit, residual current protective unit, remote control start and stop unit, remote controller and pairing unit, overcurrent protection and overcurrent setup unit; described Power supply unit is residual current protective unit, the study of remote control start and stop unit, remote controller and pairing unit, overcurrent protection and overcurrent setup unit are powered; when operating motor occurs having one to occur phase shortage mutually in overcurrent or supply line, start overcurrent protection and overcurrent setup unit, residual current protective unit.
As L2 in Fig. 2, L3, L4 is overcurrent phase shortage sensing element, when operating motor occurs having one to occur phase shortage L2 mutually in overcurrent or supply line, L3, L4 induction will be uneven, operational amplifier IC1B certainly will be caused, IC1C, IC1D exports and presents low level output, low level output will make photoelectronic coupler Q5A luminous, make Q5B photoelectricity coupling triode ON, then signal will give single-chip microprocessor P6.7 port by C5 filtering, carry out signal estimation & disposing, if now signal occurs more than 1S always, the output low level that single-chip microprocessor will allow P6.1 originally export high level makes triode Q4 disconnect, Q4 disconnection can cause the control pole of Q3 i.e. base level to draw high and cause Q3 conducting, relay J3 also conducting thereupon after Q3 conducting, originally J2 coil is made to cause J2 coil to be disconnected to J312 contact by Q2 (Q2 be originally by remote control switch start or stop) emitter with being conducting to by Q2 (Q2 be originally by remote control switch start or stop) emitter and normally closed 15 contacts of J3, J2 disconnects and makes J134 contact in the total figure of internal communication contactor coil contact make ac contactor coil without electricity, A.C. contactor constrained input is disconnected and plays overcurrent protection object, certain phase shortage is consistent with overcurrent workflow and operation principle.
If when running into electric leakage in normal operation, detection of electrical leakage coil L1 can deliver to unidirectional controllable silicon S 1 signal, once occur that electric leakage utilizes the locked characteristic of unidirectional controllable conduction, J3 coil obtains and electric original normally-closed contact 15 is disconnected, and then Q2 emitter is disconnected with ground, Q2 and disconnect J2 relay 34 ports of J1 in same general system diagram that do not work and export without electricity.The ac contactor coil connect with 34 also plays how to protect object without the output of electric whole system with input disconnection.
If the system be in operation is wanted to stop, can by remote control stop the signal of remote controller by signal receiving module J4 the data received deliver to single-chip microprocessor IC2 treated obtain pass signal i.e. low level sent by P6.2, the base stage of Q2 connects with R1 and to connect with P6.2 with D12 again, Q2 base stage J2 when meeting low level is discharged, that is shutdown system, if certainly now think, the machine is opened not by remote control, can by hand switch K1, K1 once opening remote control is just ineffective.
If do not think, defencive function input coefficient can closing switch K2, if even if K2 close because of function and protecting relay J 3 can not get operating voltage have overcurrent leak electricity phase shortage time system also can not input and output disconnect.
Described Power supply unit two-terminal 1 and 2 in relay J 1 is powered to transformer B1380VAC; transformation is the direct current 12V power supply that described intelligent electric machine comprehensive protection device needs; transformer B1 output 3; 4 export 12VAC power supply; again through bridge rectifier diode D1, diode D2, diode D6, diode D7 be direct current; level and smooth direct current is filtered into through electric capacity C8; direct current 12V is direct current 5V through three terminal regulator Q1 voltage stabilizing again, for study and the pairing unit of described remote control start and stop unit, remote controller.
Described residual current protective unit is coil L1 when to carry out perception zero sequence phase current be not 0, and coil L1 exports alternating signal, and during assembling, ABC three-phase is through coil L1.The electric current phase-sequence current neutralization flowing through L1 coil when system is normal is 0, so L1 can not induce alternating voltage signal, once occur that zero sequence phase current is not that namely 0 L1 can induce voltage signal and deliver to unilateal conduction controllable silicon S1 through R2R3, certainly this leakage current can carry out the setting of handicapping value size by R4, S1 and conducting when electric leakage signal meets the turn-on threshold of S1, if now functional switch K2 opens, so VCC12V namely can by the coil 3 of relay J 3, the normally opened contact 12 of 4 i.e. relay J 3 just can conducting, so now function relay just can be locked, even if there is no electric leakage signal again, because 1 pin of relay J 3 is connected with negative pole, now except non-artificial closing function switch again open rear exist without electric leakage signal time system just can recover normal, the collector electrode of Q2 connects negative pole down in the case, K1 is hand switch, if the base stage of now opening so Q2 just can pull-up must conduct, also J2 conducting can be made, normally opened contact 12 conducting of J2 during J2 conducting.Now 34 ends of J1 just can export 380VAC alternating current to drive external communication contactor drive motors.
The remote control reception module J 4 of described remote control start and stop unit receives the P6.0 port of next wireless data signal through single-chip microprocessor IC2, be input to single-chip microprocessor IC2 and carry out decode operation, the code solved is consistent with the password that remote controller sends and control code, then compares with the data be stored in memory IC 3.If contrast successfully, so system just can think the signal that legal remote controller sends, the output port P6.2 of single-chip microprocessor exports high level signal 5V delivers to triode Q2 base stage through triode D12, the base stage of triode Q2 receives Q2 conducting after signal, the emitter of Q2 passes through the normally-closed contact of relay J 3 to negative pole, relay J 2 adhesive completes a turn on process, unless now shutdown signal is all conducting state before coming, so 34 of J1 just can export always 380VAC for A.C. contactor voltage ensure contactor export three-phase voltage come drive motors run.Vice versa for certain remote closing signal.If if certainly hand switch K1 is in opening, even if by the two pole one-way conduction functions of D12 when shutdown signal is sent in remote control here, the base stage of Q2 also can manually K switch 1 send Q2 VCC5V to by R1 and makes its conducting.
The study of described remote controller and pairing unit learn at most typing ten remote controllers, and when learning typing the 11 remote controller, first remote controller ceases to be in force automatically.Button K3 is pinned until LED L5 lights release button during study, by any one button of remote controller that will learn typing in ten seconds, if now the words L5 of learning success can flash three times to point out user learning success, button operation is learnt as there is no remote controller in ten seconds, then automatically exit mode of learning, LED is automatic distinguishing also.When learning typing the 11 remote controller, first remote controller ceases to be in force automatically, if pin more than button K38S until L5 glimmers three times when wanting initialization remote control to remove function, now system just can remove the remote controller of original host learning typing.
In described overcurrent protection and overcurrent setup unit overcurrent protection by mutual inductor coil L2, mutual inductor coil L3, mutual inductor coil L4 as detecting element; A B C three-phase output line all passes mutual inductor coil L2, mutual inductor coil L3, mutual inductor coil L4; the power supply of overcurrent protection its main operational amplifier IC1 is powered by mutual inductor coil L2, mutual inductor coil L3, mutual inductor coil L4; the operating voltage of operational amplifier IC1 is 1.8V-36VDC, and it is 1KW that these three mutual inductors obtain the corresponding load of voltage 1.8VDC from A B C three-phase.When load is more than 1KW, overcurrent protection just can put into operation, and three group amplifiers of the operational amplifier of participation overcurrent protection are IC1B IC1C IC1D, IC1A is empty,
See Fig. 3, the benchmark of IC1B IC1C is provided by R12R13 dividing potential drop, the benchmark of IC1D is provided through R20 (power selection knob) and R21 by constant VCC5V, the output of the power being less than actual motion when selected power then three groups of operational amplifiers just can export 0, so photoelectronic coupler Q5A just can be luminous, cause photoelectrical coupler Q5B built-in phototriode C E pole conducting, now conducting can make the input port P6.7 of single-chip microprocessor cause Voltage Drop to 0VDC, when now single-chip microprocessor gathers the consumption of 0V, namely instantaneous overcurrent is ignored, if the 0 level retention time of single-chip microprocessor input port P6.7 can at more than 1S when phase shortage and overcurrent appear in system, so single-chip microprocessor timing just can from P6.1 output low level signal more than 1S, this signal is through triode Q4, making Q4 discharge (because Q4 exports high level when powering on) Q4 release makes the pull-up resistor of Q3 base stage work, base stage obtains high level signal, i.e. Q3 conducting and then make relay J 3 conducting, J3 conducting makes the emitter of the coil drive triode of relay J 2 can not get negative voltage and discharge, thus relay normally-closed contact is reduced, normally opened contact disconnects, 34 pin of J1 are 0V, to be voltage be ac contactor coil 0 and then system closing, certainly vice versa for this function.
The present invention, by the design of above first embodiment, can accomplish to have electric leakage, phase shortage, overcurrent and long-range remote control function, and provides earth leakage protective and remote control switch, and the function of overcurrent protection, is applicable to market demand to a great extent.
The present invention is described according to specific embodiment, but it will be understood by those skilled in the art that when not departing from the scope of the invention, can carry out various change and equivalent replacement.In addition, for adapting to the specific occasion of the technology of the present invention, can many amendments be carried out to the present invention and not depart from its protection range.Therefore, the present invention is not limited to specific embodiment disclosed herein, and comprises all embodiments dropping into claims.
Claims (6)
1. an intelligent electric machine comprehensive protection device, is characterized in that, comprising: the study of the Power supply unit be connected in series, residual current protective unit, remote control start and stop unit, remote controller and pairing unit, overcurrent protection and overcurrent setup unit;
Wherein, the study of described Power supply unit, residual current protective unit, remote control start and stop unit, remote controller and pairing unit, overcurrent protection and overcurrent setup unit; described Power supply unit is residual current protective unit, the study of remote control start and stop unit, remote controller and pairing unit, overcurrent protection and overcurrent setup unit are powered; when operating motor occurs having one to occur phase shortage mutually in overcurrent or supply line, start overcurrent protection and overcurrent setup unit, residual current protective unit.
2. intelligent electric machine comprehensive protection device according to claim 1, it is characterized in that, described Power supply unit is powered to transformer (B1) 380VAC through the upper two-terminal 1 and 2 of relay (J1), transformation is the direct current 12V power supply that described intelligent electric machine comprehensive protection device needs, transformer (B1) output 3, 4 export 12VAC power supply, again through bridge rectifier diode (D1), diode (D2), diode (D6), diode (D7) is direct current, level and smooth direct current is filtered into through electric capacity (C8), direct current 12V again through three terminal regulator (Q1) voltage stabilizing be direct current 5V, for described remote control start and stop unit, the study of remote controller and pairing unit use.
3. intelligent electric machine comprehensive protection device according to claim 1; it is characterized in that; described residual current protective unit is coil (L1) when to carry out perception zero sequence phase current be not 0, and coil (L1) exports alternating signal, and during assembling, ABC three-phase is through coil (L1).
4. intelligent electric machine comprehensive protection device according to claim 1; it is characterized in that; the remote control reception module (J4) of described remote control start and stop unit receives the P6.0 port of next wireless data signal through single-chip microprocessor (IC2); be input to single-chip microprocessor (IC2) and carry out decode operation; the code solved is consistent with the password that remote controller sends and control code, then compares with the data be stored in memory (IC3).
5. intelligent electric machine comprehensive protection device according to claim 1, is characterized in that, the study of described remote controller and pairing unit learn at most typing ten remote controllers, and when learning typing the 11 remote controller, first remote controller ceases to be in force automatically.
6. intelligent electric machine comprehensive protection device according to claim 1, it is characterized in that, in described overcurrent protection and overcurrent setup unit, overcurrent protection is by mutual inductor coil (L2), mutual inductor coil (L3), mutual inductor coil (L4) is as detecting element, A B C three-phase output line all passes mutual inductor coil (L2), mutual inductor coil (L3), mutual inductor coil (L4), the power supply of overcurrent protection its main operational amplifier IC1 is by mutual inductor coil (L2), mutual inductor coil (L3), mutual inductor coil (L4) is powered, the operating voltage of operational amplifier (IC1) is 1.8V-36VDC, it is 1.8VDC that these three mutual inductors obtain voltage from A B C three-phase, corresponding load is 1KW.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510325944.0A CN104882855B (en) | 2015-06-15 | 2015-06-15 | Intelligent electric machine comprehensive protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510325944.0A CN104882855B (en) | 2015-06-15 | 2015-06-15 | Intelligent electric machine comprehensive protection device |
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| Publication Number | Publication Date |
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| CN104882855A true CN104882855A (en) | 2015-09-02 |
| CN104882855B CN104882855B (en) | 2018-11-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115207880A (en) * | 2022-08-09 | 2022-10-18 | 河北烈焰机械工程有限公司 | Intelligent asphalt mixing equipment management system |
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| CN2043798U (en) * | 1989-01-14 | 1989-08-30 | 杭州富阳春建电器厂 | Electronized multifunctional protector for three phase motor |
| CN1062814A (en) * | 1991-12-31 | 1992-07-15 | 吕义金 | Multi-functional monitoring and controlling protector for three-phase motor |
| CN202059148U (en) * | 2011-04-18 | 2011-11-30 | 颜福随 | Leakage protector suitable for data communication |
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2015
- 2015-06-15 CN CN201510325944.0A patent/CN104882855B/en active Active
Patent Citations (4)
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| CN2043798U (en) * | 1989-01-14 | 1989-08-30 | 杭州富阳春建电器厂 | Electronized multifunctional protector for three phase motor |
| CN1062814A (en) * | 1991-12-31 | 1992-07-15 | 吕义金 | Multi-functional monitoring and controlling protector for three-phase motor |
| CN202059148U (en) * | 2011-04-18 | 2011-11-30 | 颜福随 | Leakage protector suitable for data communication |
| CN204720964U (en) * | 2015-06-15 | 2015-10-21 | 浙江德伦电气有限公司 | Intelligent electric machine comprehensive protection device |
Non-Patent Citations (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115207880A (en) * | 2022-08-09 | 2022-10-18 | 河北烈焰机械工程有限公司 | Intelligent asphalt mixing equipment management system |
| CN115207880B (en) * | 2022-08-09 | 2023-12-19 | 河北烈焰机械工程有限公司 | Intelligent asphalt mixing equipment management system |
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| CN104882855B (en) | 2018-11-20 |
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