CN109240194A - Electric machine control system and control method for engineering of water treatment - Google Patents
Electric machine control system and control method for engineering of water treatment Download PDFInfo
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- CN109240194A CN109240194A CN201811107969.3A CN201811107969A CN109240194A CN 109240194 A CN109240194 A CN 109240194A CN 201811107969 A CN201811107969 A CN 201811107969A CN 109240194 A CN109240194 A CN 109240194A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1184—Test ability of input for on, off capability
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- Automation & Control Theory (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The present invention provides a kind of electric machine control system for engineering of water treatment, electric machine control system includes MCC low-voltage cabinet, PLC/DCS controller and field operation box；PLC/DCS controller has signal input module and signal output module, and signal input module is connect with MCC low-voltage cabinet；Electric machine control system further includes the contactor for being used to control motor main circuit on-off for being located at MCC low-voltage cabinet；The coil of contactor is connect with Motor Control circuit, and the coil of contactor is controlled by the signal output module of PLC/DCS controller；An intermediate relay is accessed in the wire loop both ends parallel connection of contactor, when hand/automatic transfer switch switches to contact corresponding to automatic control mode, intermediate relay is attracted；Intermediate relay is connected to the signal input module of PLC/DCS controller；The status signal of disconnection or the actuation of intermediate relay serves as automatic control mode signal and is passed to the light current digital input end of the signal input module of PLC/DCS controller.
Description
Technical field
The present invention relates to the equipment control fields in water treatment field, in particular to are used for the motor control of engineering of water treatment
System and control method.
Background technique
Technology major is to meet qualified discharge to need largely to configure various process equipments in engineering of water treatment design, is completed dirty
The processing functions such as the promotion, reflux, stirring, blast aeration, dosing, sludge treatment of (useless) water process, these equipment are usually complete
The motor of multiple types such as motor is configured as transfer motion power source.
Electric specialty is required according to process control condition, and hand/automatic two kinds of control modes are usually taken to motor and lead to
Corresponding control loop is crossed to realize function, button box (or operation post) completes live hand/automatic on the spot in device context setting
Switching and manual on off button are controlled and are indicated, are realized by the PLC/DCS of robot control system(RCS) by preset program under automated manner
The automatic control of process equipment.
Hand/automatic signal of robot control system(RCS) is derived from live button box (or operation post) in the design of conventional motor control loop
A pair of of normally opened contact of hand/automatic change-over, and pass through motor control cable connection and be transmitted to MCC (MOTOR CONTROL
CENTER, motor control center), the DI mould that shielded cable is transmitted to PLC/DCS is passed through together with DI signal by the terminal of MCC
Block.
Hand/automatic signal is typically designed to horse by design specification by being connected to the motor control cable of live button box
Cable duct is total to up to control cable and power cable or gantry is laid, so that motor control cable is because of institute in transmission process
There are variations of a variety of current or voltages (use, the variation of load, start and stop of equipment of frequency converter etc.) etc. for place's laying environment by force
The complex electromagnetic environment of interference and generate induced electricity, electromagnetic interference be reacted in control system cabinet cause some automatic control signals return
Road induced voltage, which is even up to, exchanges more than 100 volts, causes control system disorder malfunction or can not work normally its reliable fortune of influence
Capable and qualified discharge, robot control system(RCS) disorder or long period cannot restore normally force sewage plant investment operation control mould manually
Formula increases the artificial operating cost of sewage plant.
Summary of the invention
To solve or alleviating the above problem, the invention proposes the electric machine control system for engineering of water treatment, features
It is, the electric machine control system includes MCC low-voltage cabinet, PLC/DCS controller and field operation box；The field operation box
Including hand/automatic transfer switch, when the hand/automatic transfer switch is in manual connecting point position, motor is to pass through execute-in-place
The manual control mode of the button control of case；When hand/the automatic transfer switch is in automatic connecting point position, motor is passes through
State the automatic control mode of PLC/DCS controller control；There is Motor Control circuit, the MCC is low in the MCC low-voltage cabinet
Pressure cabinet is connect by controlling cable with the field operation box；The PLC/DCS controller has signal input module and signal
Output module, the signal input module are connect with the MCC low-voltage cabinet；The electric machine control system further includes one and is located at institute
State the contactor for being used to control motor main circuit on-off of MCC low-voltage cabinet；The coil of the contactor and the motor control
The coil of circuit connection processed, the contactor is controlled by the signal output module of the PLC/DCS controller；Described
The wire loop both ends parallel connection of contactor accesses an intermediate relay, and the hand/automatic transfer switch switches to automatic control
When contact corresponding to mode, the intermediate relay is attracted；The intermediate relay is connected to the PLC/DCS controller
The signal input module；The status signal of disconnection or the actuation of the intermediate relay serve as automatic control mode signal and
It is passed to the light current digital input end of the signal input module of the PLC/DCS controller.
Preferably, the normally opened dry contact of the intermediate relay be connected to the PLC/DCS controller the signal it is defeated
Enter the light current data signal input terminal of module.
Preferably, the hand/automatic transfer switch of the field operation box is switch knob.
Preferably, the field operation box is button box or operation post on the spot, is additionally provided with motor in the field operation box
The start-stop button of manual control mode.
Preferably, the electric machine control system is used to control in engineering of water treatment for being promoted, being flowed back, stirred, air blast exposes
Gas, dosing, Treatment of Sludge motor.
Preferably, the control cable and forceful electric power cable are total to cable duct or cable testing bridge is laid.
Preferably, the MCC low-voltage cabinet is connect with the PLC/DCS controller by shielded cable.
Preferably, be no longer equipped in the control cable for connect the hand/automatic transfer switch from movable contact and
The PLC/DCS controller is simultaneously used for transmission two core wires for automatically entering signal.
According to another aspect of the present invention, it is also proposed that a kind of side that the motor to for engineering of water treatment is controlled
Method, there are two types of control modes for motor: when the hand/automatic transfer switch is in manual connecting point position, motor is to be grasped by scene
Make the manual control mode of the button control of case；When hand/the automatic transfer switch is in automatic connecting point position, motor is to pass through
The automatic control mode of the PLC/DCS controller control；
Automatic control mode includes the following steps:
1) manipulator/automatic transfer switch, the hand/automatic transfer switch switch to automatic connecting point position；
2) intermediate relay, which is powered, is attracted；
3) light current digital input signals are converted out using intermediate relay isolation, the intermediate relay is attracted
Status signal serves as automatic control mode signal, and the automatic control mode signal is transferred to the PLC/DCS and is controlled
The light current digital input end of the signal input module of device；
4) the preset program of the PLC/DCS controller realizes the automatic control of motor；
Manual control mode includes the following steps:
A) manipulator/automatic transfer switch, the hand/automatic transfer switch switch to manual connecting point position；
B) motor is controlled according to the manual start-stop button of the field operation box.
Preferably, in an embodiment according to the control system of present disclosure, in the control cable no longer
Equipped with for connect the hand/automatic transfer switch from movable contact and the PLC/DCS controller and be used for transmission automatic defeated
Enter two core wires of signal.
The present invention makes full use of the isolation conversion of intermediate relay, increases the function of contact, by the hand of live button box/
On the one hand switch contact of the automatic transfer switch under automated manner is connect in connection MCC Motor Control circuit by the DO of PLC/DCS
The contactor coil of point control, auto-controlled motor complete PLC/DCS program control function；Another aspect parallel connection picks out in one
Between relay circuit pass through strong and weak circuit isolation conversion, use its normally opened dry contact as hand/automatic transfer switch automatic square
The light current DI automatic signal that PLC/DCS is transmitted under formula is avoided through during Motor Control cable transmission because laying road
As passing through complex electromagnetic environment electrical interference caused by robot control system(RCS).
It should be appreciated that aforementioned description substantially and subsequent detailed description are exemplary illustration and explanation, it should not
As the limitation to the claimed content of the present invention.
Detailed description of the invention
With reference to the attached drawing of accompanying, the more purposes of the present invention, function and advantage are by the as follows of embodiment through the invention
Description is illustrated, in which:
Fig. 1 is the control cabling diagram of motor control circuit and field operation box, and Figure 1A is that traditional engineering of water treatment is set
The connection schematic diagram of one embodiment of the control cable of meter, Figure 1B are an embodiment party of control system according to the present invention
The connection schematic diagram of the control cable of formula；
Fig. 2 is the schematic illustration of a preferred embodiment of control system according to the present invention；
Fig. 3 is the symbol description in the embodiment in Fig. 2.
Specific embodiment
By reference to exemplary embodiment, the purpose of the present invention and function and the side for realizing these purposes and function
Method will be illustrated.However, the present invention is not limited to exemplary embodiment as disclosed below；Can by different form come
It is realized.The essence of specification is only to aid in those skilled in the relevant arts' Integrated Understanding detail of the invention.
Hereinafter, the embodiment of the present invention will be described with reference to the drawings.In the accompanying drawings, identical appended drawing reference represents identical
Or similar component or same or like step.
In the motor control method of traditional engineering of water treatment design, hand/automatic DI signal of robot control system(RCS) is derived from existing
A pair of dedicated contact of hand/automatic transfer switch of field button box (field operation box), i.e. hand/automatic transfer switch switch to hand
Dynamic or automated location, DI (digital input, numeral input) automatic control signal as PLC/DCS controller.The signal can lead to
The Motor Control loop transfer of MCC low-voltage cabinet is crossed, MCC low-voltage cabinet is connect by controlling cable with field operation box.It is controlling
Two core wires for transmitting the signal are specially equipped in cable.In signals transmission, control cable is typically located at and forceful electric power line
Road is total to the complex environment of cable duct or gantry, and the electromagnetic interferences such as variation of forceful electric power current or voltage can make as automatic in the environment
The Motor Control cable of signal transmission generates induced electricity, and transmission, which is reacted in robot control system(RCS), easily causes system disorders reliable
Operation.
Forming electrical interference easily to solve the robot control system(RCS) of engineering of water treatment in the prior art causes its control disorder, in turn
Water process automatic running and qualified discharge are influenced, the invention proposes a kind of electric machine control systems for engineering of water treatment, should
Electric machine control system includes MCC low-voltage cabinet, PLC/DCS controller and field operation box etc..
Field operation box includes hand/automatic transfer switch, and electric machine control system is according to hand/automatic transfer switch contact position
It sets with manual control mode and automatic control mode.When hand/automatic transfer switch is in manual connecting point position, motor is to pass through
The manual control mode of the button control of field operation box；When hand/automatic transfer switch is in automatic connecting point position, motor is logical
Cross the automatic control mode of the PLC/DCS controller control.There is Motor Control circuit, MCC low-voltage cabinet in MCC low-voltage cabinet
It is connect by control cable with field operation box.PLC/DCS controller has signal input module and signal output module, signal
Input module is connect with the MCC low-voltage cabinet.
Electric machine control system further includes the contactor for being used to control motor main circuit on-off for being located at MCC low-voltage cabinet
1KM；The coil of contactor 1KM is connect with Motor Control circuit, and the coil of contactor 1KM passes through the letter of PLC/DCS controller
The control of number output module.
An intermediate relay 3KA is accessed in the wire loop both ends parallel connection of contactor 1KM, hand/automatic transfer switch turns
When being connected to from movable contact, intermediate relay 3KA is attracted.In one embodiment, contactor 1KM and intermediate relay 3KA
It is arranged in the drawer unit of MCC low-voltage cabinet.Intermediate relay 3KA is connected or is connected directly to by Motor Control circuit
The signal input module of PLC/DCS controller；The signal that the normally opened dry contact of intermediate relay is connected to PLC/DCS controller is defeated
Enter the light current data signal input terminal of module.The status signal of intermediate relay 3KA serve as automatic control mode signal and
It is passed to the light current digital input end of the signal input module of PLC/DCS controller.
It is the schematic diagram of the PLC/DCS controller output connection of electric machine control system of the invention, the right side Fig. 2 on the left of Fig. 2
For the schematic diagram of PLC/DCS controller input connection.In this embodiment, PLC can be used in PLC/DCS controller, and PLC can collect
At in PLC rack.For hand/automatic transfer switch of field operation box by control cable connection MCC low-voltage cabinet, MCC low-voltage cabinet is logical
Cross shielded cable connection PLC rack.Control cable is generally total to cable duct laying with power cable, and shielded cable can resist extraneous electromagnetic
Interference.When it is implemented, the contactor 1KM for controlling motor main circuit is located in the drawer unit of MCC low-voltage cabinet, PLC's
DO exports the coil of control contactor 1KM, to control the energized state of motor main circuit.
Aforesaid way describes the automatic control mode of electric machine control system, and electric machine control system according to the hand/from
The connecting point position of dynamic switching switch has manual control mode and automatic control mode.In this embodiment, PLC/DCS is controlled
Device enters signal either automatically or manually from hand/automatic transfer switch of field operation box, as shown in Fig. 2, this
Electric machine control system in invention is additionally arranged an intermediate relay 3KA (on the left of Fig. 2 in the drawer unit of MCC low-voltage cabinet
Cloud coil go out), intermediate relay 3KA can and be connected in the both ends of contactor 1KM coil, or be serially connected in hand/automatic switchover
In the control circuit of the DI module from movable contact to PLC of switch.
When hand/automatic transfer switch is switched to from movable contact, intermediate relay 3KA, which is powered, to be attracted, intermediate relay 3KA
Light current automatic signal of transferring out is isolated, and is passed to the DI module of PLC/DCS controller, by the preset journey of PLC/DCS controller
The automatic control of sequence realization motor.In this embodiment, general induced current will not cause moving for intermediate relay 3KA
Make, only hand/automatic transfer switch connecting point position variation can just make intermediate relay 3KA act, and intermediate relay 3KA
Signal PLC is transmitted to using shielded cable, as a result, to PLC mono- normal errorless input signal, reached elimination electrical interference
Purpose.
In this embodiment, as shown in Fig. 2, institute of the normally opened dry contact of intermediate relay as PLC/DCS controller
State the light current digital input signals of signal input module.
In a better embodiment of the invention, switching rotation is can be used in hand/automatic transfer switch of field operation box
Button.Field operation box can be the form of button box on the spot or operation post etc..
The start-stop button of motor manual control mode is additionally provided in field operation box, by controlling corresponding control loop hand
Dynamic control motor operation.
According to an aspect of the present invention, electric machine control system is for controlling in engineering of water treatment for being promoted, being flowed back, stirred
Mix, blast aeration, dosing, Treatment of Sludge motor.Control cable and forceful electric power cable are total to cable duct or cable testing bridge is laid.
When it is implemented, Figure 1A is former conventional design control loop cable and live button box connection figure, Figure 1B is this hair
The bright Motor Control return cable and live button box connection figure being applicable in after intermediate relay isolation conversion designs.Figure 1A and
The maximum difference of Figure 1B is: electric machine control system according to the present invention, controls and is no longer equipped in cable for the hand/automatic
Two core wires (i.e. 51 and 51 ', x8 that signal is automatically entered from movable contact and PLC/DCS controller and being used for transmission of switching switch
And x9).As shown in Fig. 2, also be provided in Motor Control circuit breaker, electrothermal relay, relay, contactor, indicator light,
Button, change-over switch, insurance etc..Fig. 3 is Motor Control schematic symbol explanation.
The present invention makes full use of the isolation conversion function of intermediate relay, by coming from by Motor Control cable transmission
Hand/automatic signal on live button box is designed as accessing PLC/DCS program control under automated manner using intermediate relay parallel connection
The DI input for the light current automatic signal access PLC/DCS that transfers out, the signal is isolated in the contactor coil circuit of motor running processed
Because being no longer pass through Motor Control cable transmission, the electrical interference to robot control system(RCS) is effectively prevented.
According to another aspect of the present invention, it is also proposed that a kind of electric machine control system to carry out the motor of engineering of water treatment
The method of control.In the method, electric machine control system for control in engineering of water treatment for promoted, flowed back, stirred, air blast
Aeration, dosing, Treatment of Sludge motor.Electric machine control system includes MCC low-voltage cabinet, PLC/DCS controller and scene behaviour
Make case.This method is suitable for this situation: MCC low-voltage cabinet is connect by controlling cable with field operation box, controls cable and forceful electric power
Cable is total to cable duct or cable testing bridge laying.
There are two types of control modes for motor: when the hand/automatic transfer switch is in manual connecting point position, motor is by existing
The manual control mode of the button control of field control box；When hand/the automatic transfer switch is in automatic connecting point position, motor is
The automatic control mode controlled by the PLC/DCS controller；
Automatic control mode includes the following steps:
1) manipulator/automatic transfer switch, the hand/automatic transfer switch switch to automatic connecting point position；
2) intermediate relay, which is powered, is attracted；
3) light current digital input signals are converted out using intermediate relay isolation, the intermediate relay is attracted
Status signal serves as automatic control mode signal, and the automatic control mode signal is transferred to the PLC/DCS and is controlled
The light current digital input end of the signal input module of device；
4) the preset program of the PLC/DCS controller realizes the automatic control of motor；
Manual control mode includes the following steps:
A) manipulator/automatic transfer switch, the hand/automatic transfer switch switch to manual connecting point position；
B) motor is controlled according to the manual start-stop button of the field operation box.
The step of by motor automatic control mode, PLC/DCS controller enters automatic control mode, in automated manner
Under by robot control system(RCS) PLC/DCS pass through preset program realize motor device automatic control.For example, shown on the left of Fig. 2, it is empty
Wire frame is the automatic control signal output contact of live button box hand/automatic change-over, and the coil that can be automatically controled contactor 1KM is logical
The main contacts of off-position, contactor 1KM is set in the main circuit of motor, that is, can control starting or stoping for motor.
According to site technique demand or automatically control cannot run, can also by the step of motor manual control mode to electricity
Machine is manually controlled.
According to the above method or step, controlling can be no longer equipped with automatic for connecting hand/automatic transfer switch in cable
Contact and PLC/DCS controller are simultaneously used for transmission two core wires for automatically entering signal.
This method passes through switch contact of the hand/automatic transfer switch of live button box under automated manner and on the one hand connects
The contactor coil that MCC Motor Control circuit is controlled by the DO contact of PLC/DCS, auto-controlled motor complete PLC/DCS
Program control function；Another aspect parallel connection picks out an intermediate relay circuit and carries out strong and weak electric isolution conversion (2 left side medium cloud of attached drawing
The intermediate relay 3KA that coil goes out), when hand/automatic switch of live button box is forwarded to automated manner, make intermediate relay
3KA is attracted, and exports the light current DI of PLC/DCS under automated manner using its normally opened dry contact as hand/automatic transfer switch certainly
Dynamic signal (2 right side of attached drawing, the DI signal of PLC/DCS, cloud coil go out 3KA dry contact), avoids through Motor Control cable
Because laying is routed across complex electromagnetic environment electrical interference caused by robot control system(RCS) in transmission process.
Present disclosure can be more clearly understood by reading Fig. 2 and Fig. 3 in those skilled in the art.In in the attached drawing
Hold and those skilled in the art understand the routine of attached drawing, also as an important composition portion in the description of the present application
Point.
In conjunction with the explanation and practice of the invention disclosed here, the other embodiment of the present invention is for those skilled in the art
It all will be readily apparent and understand.Illustrate and embodiment is regarded only as being exemplary, true scope of the invention and purport are equal
It is defined in the claims.
Claims (10)
1. a kind of electric machine control system for engineering of water treatment, which is characterized in that the electric machine control system includes MCC low pressure
Cabinet, PLC/DCS controller and field operation box；
The field operation box includes hand/automatic transfer switch, when the hand/automatic transfer switch is in manual connecting point position,
Motor is the manual control mode controlled by the button of field operation box；Hand/the automatic transfer switch is in from movable contact
When position, motor is the automatic control mode controlled by the PLC/DCS controller；
There is Motor Control circuit, the MCC low-voltage cabinet passes through control cable and the execute-in-place in the MCC low-voltage cabinet
Case connection；
The PLC/DCS controller has signal input module and signal output module, the signal input module and the MCC
Low-voltage cabinet connection；
The electric machine control system further includes one and is used to control connecing for motor main circuit on-off positioned at the MCC low-voltage cabinet
Tentaculum；The coil of the contactor is connect with the Motor Control circuit, and the coil of the contactor passes through the PLC/DCS
The signal output module of controller controls；
An intermediate relay, the hand/automatic transfer switch switching are accessed in the wire loop both ends parallel connection of the contactor
When to contact corresponding to automatic control mode, the intermediate relay is attracted；
The intermediate relay is connected to the signal input module of the PLC/DCS controller；The intermediate relay
The status signal for disconnecting or being attracted serves as automatic control mode signal and is passed to the letter of the PLC/DCS controller
The light current digital input end of number input module.
2. electric machine control system according to claim 1, which is characterized in that
The normally opened dry contact of the intermediate relay is connected to the light current of the signal input module of the PLC/DCS controller
Digital signal input end.
3. electric machine control system according to claim 1, which is characterized in that
Hand/the automatic transfer switch of the field operation box is switch knob.
4. electric machine control system according to claim 1, which is characterized in that
The field operation box is button box or operation post on the spot, is additionally provided with motor manual control mode in the field operation box
Start-stop button.
5. electric machine control system according to claim 1, which is characterized in that
The electric machine control system for control in engineering of water treatment for promoted, flowed back, stirred, blast aeration, dosing, sludge
The motor of processing.
6. electric machine control system according to claim 1, which is characterized in that
The control cable and forceful electric power cable are total to cable duct or cable testing bridge is laid.
7. electric machine control system according to claim 1, which is characterized in that
The MCC low-voltage cabinet is connect with the PLC/DCS controller by shielded cable.
8. electric machine control system according to claim 6, which is characterized in that
No longer be equipped in the control cable for connect the hand/automatic transfer switch from movable contact and the PLC/DCS
Controller is simultaneously used for transmission two core wires for automatically entering signal.
9. a kind of using according to claim 1 to electric machine control system described in any one of 8 come the electricity to engineering of water treatment
The method that machine is controlled,
There are two types of control modes for motor: when the hand/automatic transfer switch is in manual connecting point position, motor is to be grasped by scene
Make the manual control mode of the button control of case；When hand/the automatic transfer switch is in automatic connecting point position, motor is to pass through
The automatic control mode of the PLC/DCS controller control；
Automatic control mode includes the following steps:
1) manipulator/automatic transfer switch, the hand/automatic transfer switch switch to automatic connecting point position；
2) intermediate relay, which is powered, is attracted；
3) light current digital input signals are converted out using intermediate relay isolation, the state that the intermediate relay is attracted
Signal serves as automatic control mode signal, and the automatic control mode signal is transferred to the PLC/DCS controller
The light current digital input end of the signal input module；
4) the preset program of the PLC/DCS controller realizes the automatic control of motor；
Manual control mode includes the following steps:
A) manipulator/automatic transfer switch, the hand/automatic transfer switch switch to manual connecting point position；
B) motor is controlled according to the manual start-stop button of the field operation box.
10. according to the method described in claim 9, it is characterized in that,
No longer be equipped in the control cable for connect the hand/automatic transfer switch from movable contact and the PLC/DCS
Controller is simultaneously used for transmission two core wires for automatically entering signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811107969.3A CN109240194A (en) | 2018-09-21 | 2018-09-21 | Electric machine control system and control method for engineering of water treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811107969.3A CN109240194A (en) | 2018-09-21 | 2018-09-21 | Electric machine control system and control method for engineering of water treatment |
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Cited By (1)
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|---|---|---|---|---|
| CN111913453A (en) * | 2020-08-11 | 2020-11-10 | 重庆吉能电气(集团）有限公司 | Electrical control system of garbage power station |
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Application publication date: 20190118 |