CN104882855B - Intelligent electric machine comprehensive protection device - Google Patents
Intelligent electric machine comprehensive protection device Download PDFInfo
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- CN104882855B CN104882855B CN201510325944.0A CN201510325944A CN104882855B CN 104882855 B CN104882855 B CN 104882855B CN 201510325944 A CN201510325944 A CN 201510325944A CN 104882855 B CN104882855 B CN 104882855B
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Abstract
The present invention relates to a kind of intelligent electric machine comprehensive protection devices, including：The power supply power supply unit of series connection, residual current protective unit, the study and pairing unit, overcurrent protection and overcurrent setup unit for being remotely controlled start and stop unit, remote controler；Wherein, the power supply power supply unit, residual current protective unit, the study and pairing unit, overcurrent protection and overcurrent setup unit for being remotely controlled start and stop unit, remote controler; the power supply power supply unit is that residual current protective unit, remote control start and stop unit, the study of remote controler and pairing unit, overcurrent protection and overcurrent setup unit are powered; when running motor, which occurs, has a phase phase shortage occur in overcurrent or power supply line, starting overcurrent protection and overcurrent setup unit, residual current protective unit.With electric leakage, phase shortage, overcurrent and long-range remote control function, and earth leakage protective and remote control switch are provided, the function of overcurrent protection is largely suitble to market to need.
Description
Technical field
The present invention relates to protector technical fields, more specifically to a kind of intelligent electric machine comprehensive protection device.
Background technique
Comprehensive protector of motor mainly collects electric leakage, phase shortage, overcurrent and long-range remote control function.
Therefore, the prior art is urgently greatly improved.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of intelligent electric machine for the above-mentioned defect of the prior art
Comprehensive protection device, including：Display module and power supply module, the wireless wrist watch further include：It is characterised in that it includes：Series connection connects
Power supply power supply unit, the residual current protective unit, the study and pairing unit, overcurrent for being remotely controlled start and stop unit, remote controler connect
Protection and overcurrent setup unit；
Wherein, the power supply power supply unit, residual current protective unit, remote control start and stop unit, remote controler study with
Pairing unit, overcurrent protection and overcurrent setup unit, the power supply power supply unit are residual current protective unit, remote control start and stop
Unit, the study of remote controler and pairing unit, overcurrent protection and overcurrent setup unit are powered, when overcurrent occurs in running motor
Or when thering is a phase phase shortage occur in power supply line, starting overcurrent protection and overcurrent setup unit, residual current protective unit.
The power supply power supply unit supplies electricity to transformer B1380VAC by two-terminal 1 and 2 on relay J1, and transformation is institute
The direct current 12V power supply of intelligent electric machine comprehensive protection device needs is stated, transformer B1 output end 3,4 exports 12VAC power supply, using bridge
Formula rectifier diode D1, diode D2, diode D6, diode D7 are direct current, and smooth direct current is filtered by capacitor C8
Electricity, direct current 12V are again direct current 5V through three terminal regulator Q1 pressure stabilizing, for the study of remote control the start and stop unit, remote controler
It is used with pairing unit.
The residual current protective unit is coil L1 when to perceive zero sequence phase current being not 0, and coil L1 exports alternating signal, dress
Timing ABC three-phase passes through coil L1.
It is micro- by monolithic that the remote control reception module J4 of the remote control start and stop unit receives the wireless data signal come
The port P6.0 of type machine IC2 is input to single-chip microprocessor IC2 and is decoded operation, the password that the code solved and remote controler are sent
It is consistent with control code, then compared with the data being stored in memory IC 3.
The study of the remote controler and pairing unit at most learn ten remote controlers of typing, typing the 11st distant when learning
First remote controler ceases to be in force automatically when controlling device.
Overcurrent protection is by mutual inductor coil L2, mutual inductor coil L3, mutual inductance in the overcurrent protection and overcurrent setup unit
Device coil L4 passes through mutual inductor coil L2, mutual inductor coil L3, mutual inductor line as detecting element, A B C three-phase output line
L4 is enclosed, the power supply of overcurrent protection main operational amplifier IC1 is by mutual inductor coil L2, mutual inductor coil L3, mutual inductor coil
L4 power supply, the operating voltage of operational amplifier IC1 is 1.8V-36VDC, this three mutual inductors are obtained from A B C three-phase
Voltage is 1.8VDC, and corresponding load is 1KW.
Implement intelligent electric machine comprehensive protection device of the invention, has the advantages that：With electric leakage, phase shortage, overcurrent and
Long-range remote control function, and earth leakage protective and remote control switch are provided, the function of overcurrent protection is largely suitble to market to need
It wants.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is the whole schematic illustration of intelligent electric machine comprehensive protection device of the present invention.
Fig. 2 is the schematic illustration 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.
Specific embodiment
As shown in Figure 1, being included at least in the intelligent electric machine comprehensive protection device that first embodiment of the invention provides, connect
The power supply power supply unit of connection, residual current protective unit, the study and pairing unit, mistake for being remotely controlled start and stop unit, remote controler
Stream protection and overcurrent setup unit；Wherein, the power supply power supply unit, residual current protective unit, remote control start and stop unit, distant
Study and pairing unit, overcurrent protection and the overcurrent setup unit of device are controlled, the power supply power supply unit is residual current protective unit, distant
It controls start and stop unit, the study of remote controler and pairing unit, overcurrent protection and overcurrent setup unit to power, when running
When motor occurs having a phase phase shortage occur in overcurrent or power supply line, starting overcurrent protection and overcurrent setup unit, earth leakage protective
Unit.
If L2, L3, L4 are overcurrent phase shortage sensing element in Fig. 2, when running motor occurs in overcurrent or power supply line
Having a phase phase shortage L2, L3, L4 induction occur will be uneven, and operational amplifier IC1B, IC1C, IC1D output certainly will be caused to present
Low level output, low level output will make photoelectronic coupler Q5A shine, and so that Q5B photoelectricity is coupled triode ON, then signal
It will be filtered by C5 and give the port single-chip microprocessor P6.7, signal judgement and processing be carried out, if signal occurs always at this time
More than 1S, the output low level that single-chip microprocessor will allow P6.1 to export high level originally disconnects triode Q4, and Q4 disconnects meeting
Causing the control electrode of Q3 i.e. base level to be drawn high causes Q3 to be connected, and relay J3 is also connected therewith after Q3 conducting, makes originally
J2 coil causes J2 line by Q2 (Q2 is originally through remote control switch start or stop) emitter and normally closed 15 contact J3 with being conducting to
Circle is disconnected by Q2 (Q2 is originally through remote control switch start or stop) emitter to the contact J312, and J2 disconnection contacts internal communication
J134 contact makes ac contactor coil without electricity in device coil contact total figure, disconnects A.C. contactor input with output and played
Stream protection purpose, certain phase shortage and overcurrent workflow are consistent with working principle.
In normal operation if when encountering electric leakage, detection of electrical leakage coil L1 can be sent signal to unidirectional controllable silicon S 1, and one
There is electric leakage and locks characteristic using unidirectional controllable conduction in denier, J3 coil obtain it is electric disconnect original normally-closed contact 15, and then send out Q2
Emitter-base bandgap grading and ground disconnect, Q2 and ground disconnect J2 relay do not work J1 in same general system diagram 34 ports without electricity output.With 34 institutes
Also the output without electric whole system and input disconnect what eye protection played to the ac contactor coil connect.
If system in operation is wanted to stop, signal receiving module can be passed through by the signal that remote control stops remote controler
J4 the data received be sent to single-chip microprocessor IC2 through handle obtain pass signal i.e. low level by P6.2 submitting,
The base stage of Q2 connects with R1 to be connected with P6.2 again with D12, and Q2 base stage J2 when meeting low level is released, that is to say, that closes system
System, if think at this time certainly the machine open not by remote control, can by manual switch K1, once K1 opening remote control is just ineffective.
If K2 can be turned off the switch by being not desired to defencive function input coefficient, if K2 is closed because function and protecting relay J3 is obtained not
Even if system will not input and output disconnection when having overcurrent electric leakage phase shortage to operating voltage.
The power supply power supply unit supplies electricity to transformer B1380VAC by two-terminal 1 and 2 on relay J1, and transformation is institute
The direct current 12V power supply of intelligent electric machine comprehensive protection device needs is stated, transformer B1 output end 3,4 exports 12VAC power supply, using bridge
Formula rectifier diode D1, diode D2, diode D6, diode D7 are direct current, and smooth direct current is filtered by capacitor C8
Electricity, direct current 12V are again direct current 5V through three terminal regulator Q1 pressure stabilizing, for the study of remote control the start and stop unit, remote controler
It is used with pairing unit.
The residual current protective unit is coil L1 when to perceive zero sequence phase current being not 0, and coil L1 exports alternating signal, dress
Timing ABC three-phase passes through coil L1.It is 0 that the electric current phase-sequence current that L1 coil is flowed through when system is normal, which neutralizes, so L1 will not feel
Alternating voltage signal should be gone out, L1 can induce voltage signal and send through R2R3 to unidirectional when zero sequence phase current occur not is 0
Conductive silicon-controlled S1, this certain leakage current can carry out the setting of handicapping value size by R4, when electric leakage signal is full
S1 is connected when the turn-on threshold of sufficient S1, if functional switch K2 is opened at this time, VCC12V can pass through relay J3
Coil 3,4 is that the normally opened contact 12 of relay J3 will be connected, then function relay will lock at this time, is not had again even
Electric leakage signal exists, because 1 foot of relay J3 is connected with cathode, after being again turned at this time except non-artificial closing function switch
System will be restored normally in the presence of no electric leakage signal, and the collector of Q2 connects down cathode in the case, and K1 is manual switch, such as
Fruit opens so base stage of Q2 at this time and will pull up to conduct, and can also J2 be made to be connected, the normally opened contact 12 of J2 when J2 is connected
Conducting.34 ends of J1 will export 380VAC alternating current to drive external communication contactor driving motor at this time.
It is micro- by monolithic that the remote control reception module J4 of the remote control start and stop unit receives the wireless data signal come
The port P6.0 of type machine IC2 is input to single-chip microprocessor IC2 and is decoded operation, the password that the code solved and remote controler are sent
It is consistent with control code, then compared with the data being stored in memory IC 3.If compared successfully, system will recognize
Output port P6.2 output high level signal 5V for the signal for being legal remote controler transmission, single-chip microprocessor passes through triode
D12 is sent to the base stage of triode Q2, and Q2 is connected after the base stage of triode Q2 receives signal, and the emitter of Q2 passes through relay J3
Normally-closed contact to cathode, relay J2, which is attracted, completes a turn on process, at this time unless shutdown signal come before be all conducting
State, then the 34 of J1 will export always the voltage guarantee contactor output three-phase voltage that 380VAC is used for A.C. contactor
Carry out driving motor operation.Vice versa for certain remote closing signal.If if manual switch K1 is in the open state certainly, i.e.,
Just two pole one-way conduction functions when sending shutdown signal by D12 are remotely controlled, the base stage of Q2 can also be operated with manual switches K1 handle
VCC5V sends Q2 to by R1 and turns it on.
The study of the remote controler and pairing unit at most learn ten remote controlers of typing, typing the 11st distant when learning
First remote controler ceases to be in force automatically when controlling device.Button K3 is pinned when study until LED light tube L5 lighted release button, at ten seconds
It is interior by any one of the remote controler of typing to be learnt key, if L5 can flash three times to prompt user to learn if learning success at this time
It practises successfully, learns button operation without remote controler such as in ten seconds, then automatically exit from mode of learning, LED also automatic distinguishing.Work as
First remote controler ceases to be in force automatically when practising the 11st remote controler of typing, pins button if to initialize when function is removed in remote control
K38S or more is until L5 flashes three times, and system will remove the remote controler for learning typing in original host at this time.
Overcurrent protection is by mutual inductor coil L2, mutual inductor coil L3, mutual inductance in the overcurrent protection and overcurrent setup unit
Device coil L4 passes through mutual inductor coil L2, mutual inductor coil L3, mutual inductor line as detecting element, A B C three-phase output line
L4 is enclosed, the power supply of overcurrent protection main operational amplifier IC1 is by mutual inductor coil L2, mutual inductor coil L3, mutual inductor coil
L4 power supply, the operating voltage of operational amplifier IC1 is 1.8V-36VDC, this three mutual inductors are obtained from A B C three-phase
The corresponding load of voltage 1.8VDC is 1KW.When load is 1KW or more, overcurrent protection will put into operation, participate in overcurrent protection
Three group amplifiers of operational amplifier are IC1B IC1C IC1D, and IC1A is sky,
Referring to Fig. 3, the benchmark of IC1B IC1C is to be divided to provide by R12R13, and the benchmark of IC1D is passed through by constant VCC5V
It crosses R20 (power selection knob) and R21 to provide, when selected power is less than the power of actual motion then three groups of operational amplifiers
Output end will export 0, then photoelectronic coupler Q5A will shine, cause phototriode C built in photoelectrical coupler Q5B
The conducting of the pole E, conducting can make the input port P6.7 of single-chip microprocessor cause Voltage Drop to 0VDC at this time, at this time single-chip microprocessor
When acquiring the consumption of 0V, that is, instantaneous overcurrent is ignored, if system single-chip microprocessor when phase shortage and overcurrent occurs and inputs
The 0 level retention time of port P6.7 can be in 1S or more, then single-chip microprocessor timing is more than that 1S will export low electricity from P6.1
Ordinary mail number, this signal pass through triode Q4, and Q4 release (because Q4 exports high level when powering on) Q4 release is made to make the upper of Q3 base stage
Pull-up resistor works, and base stage obtains high level signal, i.e. Q3 is connected and then relay J3 is connected, and J3 conducting makes relay J2's
The emitter of coil drive triode cannot get negative voltage and discharge, so that relay normally closed contact be made to restore, normally opened contact is disconnected
It opens, 34 feet of J1 are 0V, and ac contactor coil is that voltage is 0 and then system is closed, and vice versa for this certain function.
The present invention can accomplish there is electric leakage, phase shortage, overcurrent and remote control function by the design of first embodiment above
Can, and earth leakage protective and remote control switch are provided, the function of overcurrent protection is largely suitble to market to need.
The present invention is described according to specific embodiment, but it will be understood by those skilled in the art that not departing from this hair
When bright range, various change and equivalent replacement can be carried out.In addition, to adapt to the specific occasion of the technology of the present invention, it can be to the present invention
Many modifications are carried out without departing from its protection scope.Therefore, the present invention is not limited to specific embodiments disclosed herein, and including
All embodiments for dropping into claims.
Claims (1)
1. a kind of intelligent electric machine comprehensive protection device, which is characterized in that including：The power supply power supply unit of series connection, earth leakage protective
Unit, the study and pairing unit, overcurrent protection and overcurrent setup unit for being remotely controlled start and stop unit, remote controler；
Wherein, the power supply power supply unit is residual current protective unit, the study and pairing for being remotely controlled start and stop unit, remote controler
Unit, overcurrent protection and overcurrent setup unit are powered, when running motor occurs having phase appearance in overcurrent or power supply line
When phase shortage, starting overcurrent protection and overcurrent setup unit, residual current protective unit；
The power supply power supply unit supplies electricity to transformer B1380VAC, transformer B1 output by two-terminal 1 and 2 on relay J1
3,4 output AC power supplies of end, is direct current, warp using bridge rectifier diode D1, diode D2, diode D6, diode D7
It crosses capacitor C8 and is filtered into smooth direct current, direct current 12V is again direct current 5V through three terminal regulator Q1 pressure stabilizing, is started for the remote control
It is used with stop unit, the study of remote controler and pairing unit；
The residual current protective unit is coil L1 perception zero sequence phase current when not being 0, and coil L1 exports alternating signal, when assembly
ABC three-phase passes through coil L1；
The received wireless data signal of remote control reception module J4 of the remote control start and stop unit passes through single-chip microprocessor IC2
The port P6.0, be input to single-chip microprocessor IC2 and be decoded operation, the password and control code that the code solved and remote controler are sent
Unanimously, it is then compared with the data being stored in memory IC 3；
The study of the remote controler and pairing unit at most learn ten remote controlers of typing, when study the 11st remote controler of typing
When first remote controler cease to be in force automatically；
Overcurrent protection is by mutual inductor coil L2, mutual inductor coil L3, mutual inductor line in the overcurrent protection and overcurrent setup unit
L4 is enclosed as detecting element, ABC three-phase output line all passes through mutual inductor coil L2, mutual inductor coil L3, mutual inductor coil L4, mistake
The power supply of stream protection main operational amplifier IC1 is by mutual inductor coil L2, mutual inductor coil L3, mutual inductor coil L4 power supply
, the operating voltage of operational amplifier IC1 is 1.8V-36VDC, this three mutual inductor coils obtain voltage from ABC three-phase and are
1.8VDC, corresponding load are 1KW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510325944.0A CN104882855B (en) | 2015-06-15 | 2015-06-15 | Intelligent electric machine comprehensive protection device |
Applications Claiming Priority (1)
| 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 CN104882855A (en) | 2015-09-02 |
| CN104882855B true CN104882855B (en) | 2018-11-20 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-06-15 CN CN201510325944.0A patent/CN104882855B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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)
| Title |
|---|
| 电机保护智能监测系统的设计;余红粒等;《仪表技术与传感器》;20061031(第10期);第42-44页 * |
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| Publication number | Publication date |
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| CN104882855A (en) | 2015-09-02 |
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