CN108923384A - A kind of electric machine control system of three-station - Google Patents
A kind of electric machine control system of three-station Download PDFInfo
- Publication number
- CN108923384A CN108923384A CN201810586524.1A CN201810586524A CN108923384A CN 108923384 A CN108923384 A CN 108923384A CN 201810586524 A CN201810586524 A CN 201810586524A CN 108923384 A CN108923384 A CN 108923384A
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- CN
- China
- Prior art keywords
- relay
- motor
- circuit
- controller
- electric machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
Abstract
The present invention relates to a kind of electric machine control systems of three-station, including circuit for controlling motor, motor current supply circuit and controller, and the relay position detection module of connection controller, pass through the contact switch division situation of relay in relay position detection module real-time detection circuit for controlling motor, corresponding actions are carried out according to the contact switch division situation control relay driving module of relay in circuit for controlling motor, after relay in relay driving module driving motor control circuit carries out corresponding actions, when the division position of relay contact switch in circuit for controlling motor is unsatisfactory for sets requirement, control cutting motor current supply circuit, the problem of effectivelying prevent circuit for controlling motor accidentally to divide or accidentally closing three-station.
Description
Technical field
The invention belongs to three-station Intelligent control device technical fields, and in particular to a kind of motor of three-station
Control system.
Background technique
Three-station is widely used in the switchgears such as gas-filling cabinet, can use to the operation of three-station hand
Mode, but inefficiency.For the operating efficiency for improving three-station, the China that application publication number is CN107170594A is specially
Benefit proposes " a kind of circuit for controlling motor of three-position switch operation mechanism ", and the branch road of control motor forward or reverse is all provided with
There is the contact switch of corresponding relay, motor is controlled forward or reverse by circuit for controlling motor, realizes three-station
Breaking-closing operating.
Currently, the three-station of gas-filling cabinet is in normal work, it might have high current and flow through, due to three-station
Do not have high current breaking capacity, if the circuit for controlling motor of three-station malfunctions, i.e., accidentally divides three-station, it will lead
Cause serious accident；If the circuit for controlling motor of three-station accidentally closes three-station, it will lead to the improper feelings of high-tension line
It is charged under condition, can also there is very big security risk.
Summary of the invention
The object of the present invention is to provide a kind of electric machine control systems of three-station, for solving existing motor control electricity
The problem of road is accidentally divided or accidentally closes three-station.
In order to solve the above technical problems, the present invention proposes a kind of electric machine control system of three-station, including motor control
Circuit, motor current supply circuit and controller processed, and the relay position detection module of connection controller, wherein relay position
It sets detection module and is used for for detecting the division position of relay contact switch in circuit for controlling motor, controller according to relay
The contact switch division situation of relay is judged in the circuit for controlling motor of position detecting module feedback, when motor control
When the contact switch division position of circuit relay electric appliance processed is unsatisfactory for sets requirement, the motor current supply circuit is cut off in control.
The present invention in order to detect the maloperation situation of circuit for controlling motor relay in time, in circuit for controlling motor after
After electric appliance carries out corresponding actions according to controller, pass through relay in relay position detection module real-time detection circuit for controlling motor
The contact switch division situation of device is wanted when the division position of relay contact switch in circuit for controlling motor is unsatisfactory for setting
When asking, control cutting motor current supply circuit.The present invention can be according to the feedback information real-time judge of relay position detection module
The state that each relay contacts switch in circuit for controlling motor out, and judged in time and cut off motor current supply circuit, effectively
The problem of preventing circuit for controlling motor from accidentally dividing or accidentally closing three-station.
Motor generates overcurrent in the current supply circuit of motor in normal work in order to prevent, further includes connection further
The current detection module of controller, current detection module are used to detect the electric current in motor current supply circuit, and the controller is used for
When judging the electric current in motor current supply circuit not in the current margin of motor, the motor current supply circuit is cut off in control.
Generate electric current in the current supply circuit of motor when three-station is failure to actuate in order to prevent, further, the control
If device is also used to judge that the electric current when not needing motor work in motor current supply circuit is greater than the set value, the electricity is cut off in control
Machine current supply circuit.
It further include the relay for connecting controller further to be driven to the relay in circuit for controlling motor
Drive module, for the relay in driving motor control circuit.
Divide-shut brake control instruction is inputted to controller in order to facilitate user, further includes the man-machine of connection controller further
Interactive module, for issuing the separating brake or switching signal of switch operation mechanism to controller.
The case where in order to notify staff's motor current supply circuit in time further includes further the alarm for connecting controller
Device, for issuing alarm when the controller controls cutting motor current supply circuit.
In order to which the alarm signal to the warning device is shown, further, further includes the display for connecting controller, use
In the alarm signal for showing that the warning device issues.
It being further limited as to relay position detection module, relay position detection module includes photo-coupler,
The input terminal of photo-coupler is used to connect the contact switch of relay, and the output end of photo-coupler connects the controller.
It is further limited as to current detection module, the current detection module includes for signal to be isolated
Isolating transformer, and the operational amplification circuit for amplifying to signal, the input terminal string of isolating transformer is located at described
In motor current supply circuit, the input terminal of the output end connection operational amplification circuit of isolating transformer, the output of operational amplification circuit
End connects the controller.
Further limited as to operational amplifier, the operational amplification circuit include operational amplifier, first resistor,
Second resistance, 3rd resistor, one end passes through first resistor and connects the same mutually defeated of operational amplifier in the output end of isolating transformer
Enter end, the other end connects the inverting input terminal of operational amplifier by second resistance, and the other end passes sequentially through second resistance
The output end of operational amplifier is connected with 3rd resistor.
Further, the output end of the isolating transformer is parallel with the 4th resistance.
It is further limited as to human-computer interaction module, the human-computer interaction module is touch screen or button.
Detailed description of the invention
Fig. 1 is a kind of electric machine control system schematic diagram of three-station；
Fig. 2 is the current detection module schematic diagram in electric machine control system；
Fig. 3 is the relay driving module schematic diagram in electric machine control system；
Fig. 4 is the relay position detection module schematic diagram in electric machine control system；
Fig. 5 is the controller schematic diagram in electric machine control system；
Fig. 6 is the electric machine control system schematic diagram of another three-station.
Specific embodiment
A specific embodiment of the invention is further described with reference to the accompanying drawing.
Embodiment one：
The present invention proposes the electric machine control system of following operation mechanism with three-position switch：
As shown in Figure 1, including circuit for controlling motor, motor current supply circuit and controller, and the relay of connection controller
Device drive module, relay position detection module and human-computer interaction module, wherein relay driving module is used for driving motor control
Relay in circuit processed, relay position detection module are used to detect the division of relay contact switch in circuit for controlling motor
Position, human-computer interaction module are used to issue the separating brake or switching signal of three-station, controller human-computer interaction mould to controller
The relay in divide-shut brake signal control relay drive module driving motor control circuit that block is sent, relay position detection
Module detects the division position of relay contact switch, the motor control electricity that controller is fed back according to relay position detection module
The contact switch division situation of relay is judged in road, after relay driving module movement in circuit for controlling motor
When the division position of relay contact switch is unsatisfactory for sets requirement, control cutting motor current supply circuit.
The present invention can go out each in circuit for controlling motor according to the feedback information real-time judge of relay position detection module
The state of relay contacts switch, and motor current supply circuit is judged and cut off in time, it effectively prevent circuit for controlling motor to miss
The problem of dividing or accidentally closing three-station.
Motor generates overcurrent in the current supply circuit of motor in normal work in order to prevent, further, motor control system
System further includes the current detection module for connecting controller, and current detection module is used to detect the electric current in motor current supply circuit, control
When device processed is used to judge the electric current in motor current supply circuit not in the current margin of motor, control cutting motor is powered back
Road.
Generate electric current in the current supply circuit of motor when three-station is failure to actuate in order to prevent, further, controller is also
If control cutting motor is powered back for judging that the electric current when not needing motor work in motor current supply circuit is greater than the set value
Road.
The case where in order to notify staff's motor current supply circuit in time, further, electric machine control system further include connection
The warning device of controller, for issuing alarm when controller controls cutting motor current supply circuit.In order to the warning device
Alarm signal shown, further, electric machine control system further include connect controller display, for show alarm dress
Set the alarm signal of sending.
It being further limited as to relay position detection module, relay position detection module includes photo-coupler,
The input terminal of photo-coupler is used to connect the contact switch of relay, and the output end of photo-coupler connects controller.
Further limited as to current detection module, as shown in Fig. 2, current detection module include for signal into
The isolating transformer TA of row isolation, and the operational amplification circuit for being amplified to signal, isolating transformer input terminal (1,
2) string is located in motor current supply circuit, and the input terminal of output end (3,4) the connection operational amplification circuit of isolating transformer, operation is put
The output end of big circuit connects controller.
As shown in Fig. 2, operational amplification circuit includes operational amplifier TL2902, first resistor R8, second resistance R9, third
Resistance R10, one end passes through the homophase input of first resistor R8 connection operational amplifier TL2902 in the output end of isolating transformer
It holds (+), the other end passes through the inverting input terminal (-) of second resistance R9 connection operational amplifier TL2902, which successively leads to
The output end VI that second resistance R9 connects operational amplifier TL2902 with 3rd resistor R10 is crossed, operational amplifier TL2902's is defeated
Outlet VI connection controller.Further, the output end of isolating transformer TA is parallel with the 4th resistance R4.
It is further limited as to human-computer interaction module, human-computer interaction module is touch screen or button, i.e. user passes through
Touch screen or button are instructed to controller input divide-shut brake.
Embodiment two：
As shown in fig. 6, the present invention also proposes a kind of electric machine control system of operation mechanism with three-position switch, including motor control
Circuit processed, circuit for controlling motor are connected separately with motor current supply circuit and ARM control chip circuit, and ARM controls chip circuit point
It Lian Jie not relay drive circuit, relay position detection circuit, motor current detecting circuit, key circuit, LED display circuit
And loudspeaker.Wherein, whether the key that ARM controls that chip circuit is mainly responsible in detection key circuit is pressed, and according to key
Action situation executes the dependent instruction of control relay driving module；It is also used to detect the work electricity of motor in motor current supply circuit
Stream issues relay control instruction.
Relay drive circuit is mainly responsible for the relay in driving motor control circuit and carries out closing a point operation；Relay position
Set detection circuit be mainly responsible for by detection circuit for controlling motor in relay contact switch on-off, so that it is determined that relay touch
The conjunction quartile of electric switch is set；Motor current detecting circuit is responsible for detecting the electric current flowed through in motor current supply circuit, so that it is determined that electric
The working condition of machine.
ARM control chip circuit job control principle be：Three stations are controlled according to the user instruction of key circuit feedback
Switch, and the implementation effect of three-station is detected, when being judged to operating failure, stopping in time being acted, and is reported
It is alert.
Specifically, when three-station is failure to actuate, the operating current of motor in real-time monitoring circuit for controlling motor, if inspection
The electric current measured is not zero, then the total relay alarmed and be arranged in tripping motor current supply circuit, the relay is kept using magnetic
Type relay.After the tripping relay, before ARM control chip circuit reset, total relay can not be attracted, and three stations of control are opened
Motor in the circuit for controlling motor of pass can not remain in operation due to losing power supply, to guarantee that motor is failure to actuate.
After ARM control chip circuit receives the action command of key circuit, motor is transported in driving motor control circuit
When turning, the contact switch of relay will be attracted in circuit for controlling motor, detect contact switch by relay position detection circuit
Actuation situation.In general, control motor positive and inverse needs four relays, when motor forward/reverse, two of them relay
Device is attracted, other two relay disconnects.The three-position switch of band failure protection is real after issuing motor operation instruction
When monitoring control motor positive and inverse four relays division situation, if the division situation of four relays do not meet it is expected
It is required that then determining ARM control chip circuit work failure；And the size of current of motor current supply circuit is monitored simultaneously, if electric current is real
The current value range that monitor value deviation motor in border works normally, it is same to determine ARM control chip circuit work failure, work as judgement
When ARM controls chip circuit failure, the power supply of motor is cut off immediately, i.e. cutting motor current supply circuit；And it is shown by LED
Circuit and loudspeaker issue alarm signal.
Relay drive circuit as shown in Figure 3, using the ULN2003 chip of TI, the relay of driving uses Omron
G2R-2 relay, for realizing three-station motor positive and negative rotation control.
Relay position detection circuit as shown in Figure 4, for whether just to detect three-station motor control relay
True actuation or shutdown is detected by the conducting and disconnection of contact switch.In Fig. 4,7 foot not wiring of relay, 5 feet meet 5V
Power supply, 6 feet are followed by 1 foot of optocoupler O1 by resistance R3.Relay contact switch (5,6,7), which constitutes one, to be opened one and closes opening for form
Close, when relay coil (1,8) it is electric when, relay be attracted, contact switch (5,6,7) from (6,7) be connected to, become (5,6) even
It is logical.Therefore, detect whether contact (5,6) in contact switch (5,6,7) is connected to it may determine that whether relay works normally.When
When relay contact (5,6) is connected to, 5V power supply passes through the light emitting diode of driving optocoupler O1 after resistance R3, and O1 grade of optocoupler is led
Logical ,+3V3 (i.e. the power supply of+3.3V) is exported by optocoupler and is controlled chip circuit to ARM, and ARM controls chip circuit and detects REALY_
Whether DETECT signal is working condition that 3.3V high level may determine that relay, and then determines the relay in motor control
Contact switch division situation in circuit is judged, when the contact switch division position of relay in circuit for controlling motor
When being unsatisfactory for sets requirement, control cutting motor current supply circuit.
ARM as shown in Figure 5 controls chip circuit, and the STM32F103 of chip selection ST company, STM32F103 are
The ARM chip of Cortex-M3 kernel has abundant Peripheral Interface, is highly suitable for using in TT&C system.
Motor current detecting circuit flows through in electrical-coil as shown in Fig. 2, for detecting motor when working or not working
Electric current.If motor works, detects and judge current of electric size whether in the range of normal work, determine that motor is just
It often works or the failures such as stall occurs；If motor does not work, whether motor is judged by the electric current in detection electrical-coil
There is accidental unintentional rotation, does not issue motor action instruction (rotating forward instruction or toggling command) and motor lines are irised out if detecting
Existing electric current then determines motor unintentional rotation, immediately total relay in tripping motor current supply circuit, and by LED display circuit and
Loudspeaker alarm signal.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (10)
1. a kind of electric machine control system of three-station, which is characterized in that including circuit for controlling motor, motor current supply circuit and
Controller, and the relay position detection module of connection controller, wherein relay position detection module is for detecting motor
The division position of relay contact switch in control circuit, controller are used for the motor fed back according to relay position detection module
The contact switch division situation of relay is judged in control circuit, when the contact of relay in circuit for controlling motor is opened
When pass division position is unsatisfactory for sets requirement, the motor current supply circuit is cut off in control.
2. the electric machine control system of three-station according to claim 1, which is characterized in that further include connection controller
Current detection module, current detection module is used to detect electric current in motor current supply circuit, and the controller is for judging electricity
When electric current in machine current supply circuit is not in the current margin of motor, the motor current supply circuit is cut off in control.
3. the electric machine control system of three-station according to claim 2, which is characterized in that the controller is also used to
If judging, the electric current when not needing motor work in motor current supply circuit is greater than the set value, and control cuts off the motor and powers back
Road.
4. the electric machine control system of three-station according to claim 1, which is characterized in that further include connection controller
Relay driving module, for the relay in driving motor control circuit.
5. the electric machine control system of three-station according to claim 1, which is characterized in that further include connection controller
Human-computer interaction module, for controller issue switch operation mechanism separating brake or switching signal.
6. the electric machine control system of three-station according to claim 1-5, which is characterized in that further include connecting
The warning device of controller is connect, for issuing alarm when the controller controls cutting motor current supply circuit.
7. the electric machine control system of three-station according to claim 6, which is characterized in that further include connection controller
Display, the alarm signal issued for showing the warning device.
8. the electric machine control system of three-station according to claim 1, which is characterized in that relay position detects mould
Block includes photo-coupler, and the input terminal of photo-coupler is used to connect the contact switch of relay, the output end connection of photo-coupler
The controller.
9. the electric machine control system of three-station according to claim 2, which is characterized in that the current detection module
Including the isolating transformer for signal to be isolated, and the operational amplification circuit for amplifying to signal, isolation become
The input terminal string of depressor is located in the motor current supply circuit, the input of the output end connection operational amplification circuit of isolating transformer
The output end at end, operational amplification circuit connects the controller.
10. the electric machine control system of three-station according to claim 9, which is characterized in that the operation amplifier electricity
Road includes operational amplifier, first resistor, second resistance, 3rd resistor, and one end passes through first in the output end of isolating transformer
Resistance connects the non-inverting input terminal of operational amplifier, and the other end connects the inverting input terminal of operational amplifier by second resistance,
The other end passes sequentially through the output end that second resistance connects operational amplifier with 3rd resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810586524.1A CN108923384A (en) | 2018-06-07 | 2018-06-07 | A kind of electric machine control system of three-station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810586524.1A CN108923384A (en) | 2018-06-07 | 2018-06-07 | A kind of electric machine control system of three-station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108923384A true CN108923384A (en) | 2018-11-30 |
Family
ID=64418564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810586524.1A Pending CN108923384A (en) | 2018-06-07 | 2018-06-07 | A kind of electric machine control system of three-station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108923384A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112769097A (en) * | 2020-12-31 | 2021-05-07 | 上海宏英智能科技股份有限公司 | Locked-rotor protection system of direct current motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000050489A (en) * | 1998-07-30 | 2000-02-18 | Omron Corp | Motor drive circuit |
| CN1588739A (en) * | 2004-08-20 | 2005-03-02 | 德力西集团有限公司 | Motor protective circuit |
| CN202906433U (en) * | 2012-11-14 | 2013-04-24 | 常熟开关制造有限公司(原常熟开关厂） | Control and protective switching device |
-
2018
- 2018-06-07 CN CN201810586524.1A patent/CN108923384A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000050489A (en) * | 1998-07-30 | 2000-02-18 | Omron Corp | Motor drive circuit |
| CN1588739A (en) * | 2004-08-20 | 2005-03-02 | 德力西集团有限公司 | Motor protective circuit |
| CN202906433U (en) * | 2012-11-14 | 2013-04-24 | 常熟开关制造有限公司(原常熟开关厂） | Control and protective switching device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112769097A (en) * | 2020-12-31 | 2021-05-07 | 上海宏英智能科技股份有限公司 | Locked-rotor protection system of direct current motor |
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| PB01 | Publication | ||
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Application publication date: 20181130 |