CN109507867A - A kind of safety control system of equipment - Google Patents
A kind of safety control system of equipment Download PDFInfo
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- CN109507867A CN109507867A CN201811638922.XA CN201811638922A CN109507867A CN 109507867 A CN109507867 A CN 109507867A CN 201811638922 A CN201811638922 A CN 201811638922A CN 109507867 A CN109507867 A CN 109507867A
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- control
- power
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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
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
- G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of safety control systems of equipment, are related to equipment safety control field.Equipment include control unit, execution unit, for control unit power supply control electric power loop and be execution unit power power power-supply circuit.Safety control system includes two relay contacts being arranged in series on control electric power loop, further includes the control host and operation panel for controlling two relay contacts respectively, and control host is communicated to connect with control unit and operation panel respectively；When power power-supply circuit disconnects, at least one relay contact is disconnected；When equipment alarm free, and after two relay contacts are closed, control host issues operating instruction to control unit.The security management and control strategy that the present invention is combined by software and hardware, automatic and manual operation combines controls the control electric power loop of equipment, realizes power power-supply circuit and controls the joint control of electric power loop, it is ensured that equipment safety operation.
Description
Technical field
The present invention relates to equipment safety control fields, are specifically related to a kind of safety control system of equipment.
Background technique
Currently, the safety control system inside high power laser, electric system and electromechanical equipment generally uses light current control
The control program of forceful electric power processed judges input condition using software, and output signal control relay cut-off equipment electricity
Resource loop.When relay disconnects, equipment is disconnected with power supply.Above scheme exists in some more harsh applications
Following deficiency, such as the abnormal of relay are attracted or artificial maloperation will lead to equipment error starting, so as to cause personal injury,
The serious consequence of equipment damage.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of safety control system of equipment,
It is combined by software and hardware, the security management and control strategy that automatic and manual operation combines controls the control electric power loop of equipment
System realizes power power-supply circuit and controls the joint control of electric power loop, it is ensured that equipment safety operation.
The present invention provides a kind of safety control system of equipment, and the equipment includes control unit, execution unit, is control
The control electric power loop of unit power supply and the power power-supply circuit to power for execution unit；
The safety control system includes two relay contacts being arranged in series on the control electric power loop, is also wrapped
Include respectively control two relay contacts control host and operation panel, the control host respectively with described control unit and
Operation panel communication connection；
When the power power-supply circuit disconnects, at least one relay contact is disconnected；
When the equipment alarm free, and after two relay contacts are closed, the control host is to described control unit
Issue operating instruction.
Based on the above technical solution, two relay contacts on the control electric power loop are normally closed the
One relay contact and the second normally opened relay contact；
The safety control system further includes alarm controller, and the alarm signal that alarm controller obtains the equipment is concurrent
It is sent to the control host；
The control host according to the alarm signal to the control electric power loop send for disconnect described first after
The first control signal of appliance contact；
The operation panel is equipped with alarm lamp corresponding with the alarm signal, and for disconnecting described second
The enabled key of the first of relay contact.
Based on the above technical solution, the alarm controller also obtains the state letter in the power power-supply circuit
Number；
The control host according to the status signal to the control electric power loop send for disconnect described first after
The first control signal of appliance contact.
Based on the above technical solution, the alarm controller includes:
Bleeder circuit is used to divide the alarm signal；
Optical coupling isolation circuit comprising pull down resistor and the light for carrying out light-coupled isolation to the voltage signal after partial pressure
Coupling isolator, the anode in one end connection driving voltage source of optical coupling isolator, and the other end is grounded by pull down resistor；
Auxiliary relay circuit is used to connect driving voltage source when optical coupling isolator is connected；
Alarm unit is used to be driven voltage source driving and issues police instruction.
Based on the above technical solution, the auxiliary relay circuit includes two auxiliary relays in parallel, often
A auxiliary relay includes concatenated line packet and normally opened contact, connects the driving voltage source between online packet and normally opened contact
Anode, when optical coupling isolator conducting, line Bao get electricity is to be closed normally opened contact.
Based on the above technical solution, status switch is additionally provided on the operation panel, status switch is for disconnecting
The normally opened contact of the auxiliary relay.
Based on the above technical solution, it is additionally provided with normally opened third relay contact on the control electric power loop,
Third relay contact is connected with first relay contact and the second relay contact, is additionally provided with use on the operation panel
In the second enabled key for controlling the third relay contact.
Based on the above technical solution, the power power-supply circuit includes one or more sub-loops, and every height returns
Road is equipped with normally closed 4th relay contact；
It is additionally provided with one or more emergency buttons on the operation panel, each emergency button is for disconnecting one described the
Four relay contacts.
Based on the above technical solution, the control host is issued to the power power-supply circuit for disconnecting one
Or the second control signal of multiple 4th relay contacts.
Based on the above technical solution, it is single to be all connected with AC power supply for the control electric power loop and power power-supply circuit
Member is additionally provided with the master switch for starting and stopping AC power supply unit on the operation panel, and display AC power supply unit opens
Dynamic or halted state power supply indicator.
Compared with prior art, the embodiment of the present invention provides the safety control system of equipment, and equipment includes control unit, holds
Row unit, for control unit power supply control electric power loop and be execution unit power power power-supply circuit, security control
System includes two relay contacts that series connection is set on control electric power loop, further includes controlling two relay contacts respectively
Host and operation panel are controlled, control host and control unit communicate to connect；When power power-supply circuit disconnect when, at least one after
Appliance contact disconnects；When equipment alarm free, and after two relay contacts are closed, control host is issued to control unit and is run
Instruction.It is combined by software and hardware, security management and control strategy that automatic and manual operation combines is to the control electric power loop of equipment
It is controlled, realize power power-supply circuit and controls the joint control of electric power loop, it is ensured that equipment safety operation.
Detailed description of the invention
Fig. 1 is the application schematic diagram of the safety control system of automation equipment of the embodiment of the present invention；
Fig. 2 is the schematic diagram that electric power loop is controlled in the embodiment of the present invention；
Fig. 3 is the schematic diagram of operation panel in the embodiment of the present invention；
Fig. 4 is the schematic diagram in power power-supply circuit in the embodiment of the present invention；
Fig. 5 is the schematic diagram of alarm controller in the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in further detail.
The embodiment of the present invention provides a kind of safety control system of equipment, which can be high power laser equipment, electricity
Force system or electromechanical equipment.
Shown in Figure 1 by taking high power laser equipment as an example, high power laser equipment includes laser, power supply, Yi Jiwei
The AC power supply unit of power supply power supply, laser include control unit and execution unit, and power supply includes the control for control unit power supply
Electric power loop processed and the power power-supply circuit to power for execution unit, wherein control electric power loop is light current, power power-supply
Circuit is forceful electric power.
It further include the monitoring unit for detection device state, such as sensor in equipment, in unit exception, monitoring is single
Member generates alarm signal and is sent to control unit.Alarm signal is divided into alarm signal and fault-signal, and alarm signal includes temperature
Degree alarm, fault-signal include light failure.Alarm signal can be sent to control host by control unit, wherein control
Alarm signal is uploaded to control host by unit, judges whether to continue light out by control host；Control unit is according to fault-signal
Instruction execution unit stops working in advance, and is reported to control host.
Safety control system includes two relay contacts being arranged in series on control electric power loop, specifically, control
Two relay contacts on electric power loop are normally closed first relay contact Kc1 and the second normally opened relay contact
Kc2。
Safety control system further includes the control host and operation panel for controlling above-mentioned relay contact respectively, controls host
It is communicated to connect respectively with control unit and operation panel, controls host and operation panel passes through AC/DC power supply power supply.Wherein,
Control host sends the first control signal for disconnecting the first relay contact Kc1, and operation panel is equipped with first and enables to press
Key (shown in Figure 3), the first enabled key issue the first enable signal of the second relay contact Kc2 of closure after being pressed.
Safety control system further includes alarm controller, and alarm controller obtains the alarm signal of equipment, and sends respectively
To control host and operation panel；Alternatively, alarm signal is sent control host by alarm controller, host is controlled by alarm signal
Number it is forwarded to operation panel.
Operation panel is equipped with alarm lamp and the first enabled key for disconnecting the second relay contact Kc2
(enabled 1).Shown in Figure 3, alarm lamp includes that thermal control alarm indicator, light beam alarm indicator and laser failure refer to
Show lamp, when operation panel receives thermal control alarm signal and light beam alarm signal, then thermal control alarm indicator and light beam alarm
Indicator light is lighted.When operation panel receives fault-signal, then laser failure indicator light is lighted.
When equipment alarm free, the first relay contact Kc1 is kept closed, the enabled key of first on operation panel
(enabled 1) issues the first enable signal of the second relay contact Kc2 of closure after being pressed.Two relay contacts are closed
Afterwards, control host issues operating instruction to control unit, and control unit instruction execution unit starts and stops.
In one embodiment, when receiving alarm signal, which includes that indicated horsepower electric power loop disconnects
Alarm signal, control host can according to alarm signal to control electric power loop issue for disconnect the first relay contact
The first control signal of Kc1.After alarm lamp on operation panel is lighted, the enabled key of operator's operation first is (enabled
1) to disconnect the second relay contact Kc2.Therefore, the first relay contact Kc1 and/or the second relay contact Kc2 are disconnected.
In another embodiment, alarm controller also obtains the status signal in power power-supply circuit, the status signal
It is used to indicate power power-supply circuit and is in on-off or abnormal attracting state.Host is controlled according to power power-supply circuit
Status signal issues the first control signal for disconnecting the first relay contact Kc1, and lighting operation to control electric power loop
Alarm lamp on panel, the first enabled key of operator's operation (enabled 1) is to disconnect the second relay contact Kc2.Cause
This, the first relay contact Kc1 and/or the second relay contact Kc2 are disconnected.
Therefore, when power power-supply circuit disconnects, at least one of concatenated relay contact on electric power loop is controlled
It will disconnect, avoid equipment error starting caused by the maloperation artificially in equipment.
Shown in Figure 4, power power-supply circuit is equipped with a normally closed 4th relay contact Kp1.4th relay
Device contact Kp1 can be disconnected by control unit according to alarm signal.
When power power-supply circuit disconnects, not only execution unit is powered off, but also is controlled on electric power loop in relay contact
At least one disconnection.If the 4th relay contact Kp1 is abnormal actuation again after disconnecting, although execution unit connection electricity
Source, but power since control electric power loop is already off without normal direction control unit, control unit cannot indicate to execute
Unit restarting.
The present embodiment is using the control host and operation panel of device external to two on the control electric power loop of equipment
Relay contact is respectively controlled, and is combined by software and hardware, the security management and control strategy pair that automatic and manual operation combines
The control electric power loop of equipment is controlled, and is realized power power-supply circuit and is controlled the joint control of electric power loop, it is ensured that equipment
Safe operation.
Preferably, shown in Figure 2, concatenated relay contact there are three setting on electric power loop is controlled, is normally closed respectively
The first relay contact Kc1, the second normally opened relay contact Kc2 and the normally opened third relay contact Kc3 closed.
Operation panel shown in Figure 3 is equipped with the first enabled key (enabled 1) and the second enabled key (enabled 2), the
One enabled key (enabled 1) issues the first enable signal of the second relay contact Kc2 of control, the second enabled key after being pressed
(enabled 2) issue the second enable signal of control third relay contact Kc3 after being pressed.Using the second relay contact Kc2
Artificial maloperation can be further avoided with third relay contact Kc3, it is ensured that equipment is in a safe condition.
Shown in Figure 5, alarm controller includes bleeder circuit, optical coupling isolation circuit, auxiliary relay circuit and alarm
Unit, bleeder circuit is for dividing alarm signal；After optical coupling isolation circuit includes pull down resistor and is used for partial pressure
Voltage signal carry out the optical coupling isolator of light-coupled isolation, the anode in one end connection driving voltage source of optical coupling isolator, and another
One end is grounded by pull down resistor；Auxiliary relay circuit is used to connect driving voltage source when optical coupling isolator conducting；Alarm
Unit issues police instruction for being driven voltage source driving.
Specifically, bleeder circuit includes concatenated resistance R1 and R2, the input of bleeder circuit is alarm signal, the alarm signal
It number is differential signal Re_J+ and Re_J-, the voltage on resistance R2 is the first output voltage.Further, bleeder circuit further includes
Current-limiting resistance R3 and diode V1 for pressure stabilizing, the first output voltage export second after current-limiting resistance R3 and diode V1
Output voltage.
Further, optical coupling isolation circuit includes the protection circuit and pull down resistor of optical coupling isolator, optical coupling isolator
R5, the anode in one end connection driving voltage source of optical coupling isolator, and the other end is grounded by pull down resistor R5.The protection circuit
Including diode V2 and resistance R4, for the second output voltage after the protection circuit, the output voltage on resistance R4 inputs optocoupler
Isolator.
Auxiliary relay circuit includes two auxiliary relays in parallel, each auxiliary relay include concatenated line packet and
Normally opened contact connects driving voltage source between online packet and normally opened contact, and when optical coupling isolator conducting, line Bao get electricity is to be closed
Normally opened contact.
Specifically, the line packet N1A of the first auxiliary relay, normally opened contact K1B and K1C series connection, online to wrap N1A and normally opened touching
Between point K1B, driving voltage source Vcc is connected with relay contact K1A by diode V3 in parallel.Second auxiliary relay
Line packet N1B, normally opened contact K2B and K2C series connection, it is online to wrap between N1B and normally opened contact K2B, by diode V4 in parallel and
Relay contact K2A connection driving voltage source Vcc, for example, driving voltage source Vcc=+28 volt (V).
First auxiliary relay and the second auxiliary relay are in parallel, and input terminal connects optical coupling isolator, output end output
Voltage D_J+ to alarm unit D_J.
Status switch is additionally provided on operation panel, status switch is used to disconnect the normally opened contact of auxiliary relay.Specifically,
Status switch triggering signal the normally opened contact of auxiliary relay can be driven to be attracted and kept, press the status switch can remove it is auxiliary
The actuating of relay is helped, is restPosed.
Alarm controller receives the switching value alarm signal transmitted after laser equipment alarm, through light by AC/DC power supply power supply
The actuating of relay of rear-guard dynamic auxiliary is isolated in coupling, control host, and the alarm lamp on lighting operation panel is sent to, to cut
Relay contact on disconnected control electric power loop, forbids laser to go out light, the safety of effective protection laser equipment.Operator is true
After recognizing alarm signal, the alarm condition of alarm controller can be removed by the status switch on operation panel.
In other embodiments, power power-supply circuit includes one or more sub-loops, and each sub-loop is used to hold
One component of row unit is powered, and is equipped with normally closed 4th relay contact in each sub-loop.On operation panel
One or more emergency buttons are additionally provided with, each emergency button is for disconnecting the 4th relay contact.Specifically, referring to figure
Set shown in 3, on operation panel there are two emergency button: emergency stop and emergency power off are respectively used to disconnect the in two sub-loops
Four relay contacts.When the internal fault of equipment causes equipment power supply that cannot cut off at once, power is disconnected by manual operation
Electric power loop ensures the safety of the person and equipment to cut off the power supply of execution unit.
Preferably, in addition to the emergency button for disconnecting the 4th relay contact in sub-loop, host is controlled to power
Electric power loop issues the second control signal for disconnecting one or more 4th relay contacts.Pass through software and hardware knot
It closes, the security management and control strategy that automatic and manual operation combines, the power power-supply circuit of equipment is controlled, it is ensured that equipment is in
Safe condition.
Preferably, it controls electric power loop and power power-supply circuit is all connected with AC power supply unit, shown in Figure 3, operating surface
The key switch for starting and stopping AC power supply unit, and the starting of display AC power supply unit or stopping shape being additionally provided on plate
The power supply indicator of state.When key switch is to open, AC power supply unit starts and is control electric power loop and power power-supply circuit
Power supply.When key switch is to close, AC power supply unit stops, and controls electric power loop and power power-supply circuit powers off.
The embodiment of the present invention keeps equipment in a safe condition by the security management and control scheme integrated with laser equipment
Under, it specifically includes:
Two or more relay contacts are arranged in series on control electric power loop, relay contact is led by control respectively
Machine and operation panel control.
Alarm controller directly acquires the alarm signal of equipment, can also directly acquire the state letter of power power-supply circuit
Number.
Host is controlled to communicate to connect with control unit and operation panel respectively；Control host according to the facility information of acquisition,
Alarm signal and status signal control the workflow of laser equipment.
In such a way that human intervention is added in operation panel, real-time monitoring warning signal and fault-signal, and according to alarm
The content of signal and fault-signal, which is taken, to be reported, emergency power off, limits out the measures such as light, the laser emission of artificial arrestment.
On the basis of above-mentioned security management and control scheme, the security management and control strategy of realization includes:
(1) hardware control includes:
Two enabled keys, " emergency stop " key and " emergency power off " key are set on operation panel, wherein make
Light-path can be gone out by key control laser, only after two enabled keys all closure, just make laser go out light circuit and connect
Logical, light is effective out, meanwhile, false triggering can be prevented.When there are abnormal conditions in laser, such as catastrophe failure, enable key
Control electric power loop can be cut off." emergency power off " and " emergency stop " key can disconnect power power-supply circuit, to stop to sharp
The power supply of light device.
(2) software control includes:
It controls host and laser carries out two-stage control mode.Host is controlled only to communicate with the control unit of laser, then
Predetermined function is realized by the execution unit of control unit control laser.The information node of the execution unit of laser it is not direct with
It controls host and carries out any information exchange.
Important component of the host as safety control system is controlled, main operation refers to that main control software, Beam Control are soft
Part, laser control software obtain the status information of laser, alarm signal and export display, control the work shape of laser
State completes the security control process of whole equipment.
(3) method of emergency power off includes:
Laser monitors itself working condition in real time, and in abnormal cases, control unit actively carries out internal disconnected
Electricity.
The power power-supply circuit of emergency button control laser on operation panel switches on and off, operator according to
The working condition of laser equipment, implements emergency power off in abnormal cases.It realizes in feeder ear to the execution unit of laser
Emergency power off prevents accident.
(4) the striation part that goes out of laser includes:
A) execution unit of laser and control unit self-test state are normal；
B) " enabled 1 " and " enabled 2 " key has been closed on operation panel；
C) control host issues out light instruction.
Security management and control strategy mainly uses control electric power loop with the joint control of power power-supply circuit, hardware in conjunction with software
Scheme, real-time monitoring equipment, and the mode of human intervention is added takes control single according to the type and content of alarm signal
Member reports, emergency power off, limits out the laser emission that the measures such as light stop laser equipment, it is ensured that the safety of personnel and equipment.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of safety control system of equipment, the equipment includes control unit, execution unit, the control powered for control unit
Electric power loop processed and the power power-supply circuit to power for execution unit, it is characterised in that:
The safety control system includes two relay contacts being arranged in series on the control electric power loop, further includes point
Not Kong Zhi two relay contacts control host and operation panel, the control host respectively with described control unit and operation
Panel communication connection；
When the power power-supply circuit disconnects, at least one relay contact is disconnected；
When the equipment alarm free, and after two relay contacts are closed, the control host is issued to described control unit
Operating instruction.
2. the safety control system of equipment as described in claim 1, it is characterised in that:
Two relay contacts on the control electric power loop be normally closed first relay contact and normally opened second after
Appliance contact；
The safety control system further includes alarm controller, and alarm controller obtains the alarm signal of the equipment and is sent to
The control host；
The control host is sent to the control electric power loop for disconnecting first relay according to the alarm signal
The first control signal of contact；
The operation panel is equipped with alarm lamp corresponding with the alarm signal, and for disconnecting second relay
The enabled key of the first of device contact.
3. the safety control system of equipment as claimed in claim 2, it is characterised in that:
The alarm controller also obtains the status signal in the power power-supply circuit；
The control host is sent to the control electric power loop for disconnecting first relay according to the status signal
The first control signal of contact.
4. the safety control system of equipment as claimed in claim 2, which is characterized in that the alarm controller includes:
Bleeder circuit is used to divide the alarm signal；
Optical coupling isolation circuit comprising pull down resistor and for after partial pressure voltage signal carry out light-coupled isolation optocoupler every
From device, the anode in one end connection driving voltage source of optical coupling isolator, and the other end is grounded by pull down resistor；
Auxiliary relay circuit is used to connect driving voltage source when optical coupling isolator is connected；
Alarm unit is used to be driven voltage source driving and issues police instruction.
5. the safety control system of equipment as claimed in claim 4, it is characterised in that: the auxiliary relay circuit includes two
The auxiliary relay of a parallel connection, each auxiliary relay include concatenated line packet and normally opened contact, online packet and normally opened contact it
Between connect the anode in the driving voltage source, when optical coupling isolator conducting, line Bao get electricity is to be closed normally opened contact.
6. the safety control system of equipment as claimed in claim 5, it is characterised in that: be additionally provided with state on the operation panel
Switch, status switch are used to disconnect the normally opened contact of the auxiliary relay.
7. the safety control system of equipment as claimed in claim 2, it is characterised in that:
Normally opened third relay contact, third relay contact and first relay are additionally provided on the control electric power loop
Device contact and the series connection of the second relay contact are additionally provided with for controlling the third relay contact on the operation panel
Two enabled keys.
8. the safety control system of equipment as described in any one of claim 1 to 7, it is characterised in that:
The power power-supply circuit includes one or more sub-loops, be equipped in each sub-loop one the normally closed 4th after
Appliance contact；
Be additionally provided with one or more emergency buttons on the operation panel, each emergency button for disconnect one the described 4th after
Appliance contact.
9. the safety control system of equipment as claimed in claim 8, it is characterised in that: the control host is electric to the power
Resource loop issues the second control signal for disconnecting one or more 4th relay contacts.
10. the safety control system of equipment as described in claim 1, it is characterised in that: the control electric power loop and power
Electric power loop is all connected with AC power supply unit, is additionally provided on the operation panel for starting and stopping always opening for AC power supply unit
It closes, and display AC power supply unit starts or the power supply indicator of halted state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811638922.XA CN109507867A (en) | 2018-12-29 | 2018-12-29 | A kind of safety control system of equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811638922.XA CN109507867A (en) | 2018-12-29 | 2018-12-29 | A kind of safety control system of equipment |
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| CN109507867A true CN109507867A (en) | 2019-03-22 |
Family
ID=65755851
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811638922.XA Pending CN109507867A (en) | 2018-12-29 | 2018-12-29 | A kind of safety control system of equipment |
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Application publication date: 20190322 |
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