CN108655193A - Sensor hot standby control device online - Google Patents
Sensor hot standby control device online Download PDFInfo
- Publication number
- CN108655193A CN108655193A CN201710210888.5A CN201710210888A CN108655193A CN 108655193 A CN108655193 A CN 108655193A CN 201710210888 A CN201710210888 A CN 201710210888A CN 108655193 A CN108655193 A CN 108655193A
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- China
- Prior art keywords
- sensor
- kink
- hot standby
- data
- detection
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
The present invention relates to a kind of sensor hot standby control devices online, it is characterized in that, the control device includes loop back roll, kink frame, kink hydraulic cylinder, servo-hydraulic circuit and electrical equipment, loop back roll is mounted on kink frame, kink hydraulic cylinder is connected with kink frame, servo-hydraulic circuit is connected with kink hydraulic cylinder, the electrical equipment includes angular transducer, control valve in servo-hydraulic circuit, the control cable of sensor, I/O modules and controller, angular transducer is mounted on loop back roll extending shaft, control valve in angular transducer and servo-hydraulic circuit is connected by controlling cable with I/O modules, I/O modules are connected by cable with controller.The method that the technical solution is realized that two sensors are online, is switched fast a so that when sensor breaks down, another sensor can be immediately switched to and participate in control, avoid the fault in production caused by sensor fault.
Description
Technical field
The present invention relates to a kind of control devices, and in particular to a kind of sensor hot standby control device online, belong to it is electrical from
Dynamicization control technology field.
Background technology
Increasing recently as competition among enterprises pressure, in order to reduce product cost, enterprises all are making great efforts to reduce
Fault in production improves enterprise efficiency, it is expected that produce more products within the limited time, to reduce product at
This, improves product competitiveness in the market.Finish rolling group loop equipment is equipment the most key in hot rolling enterprise, loop equipment occur therefore
Barrier is bound to lead to mm finishing mill unit steel scrap, and the sensor fault for detecting kink angle is always perplex the production of hot rolling enterprise one
A problem will be that enterprise creates prodigious economic benefit if this problem can be efficiently solved.
Invention content
The present invention exactly for the technical problems in the prior art, provides a kind of online hot standby control dress of sensor
It sets, the method which realizes that two sensors are online, is switched fast so that, can when a sensor breaks down
It is immediately switched to another sensor and participates in control, avoid the fault in production caused by sensor fault.
To achieve the goals above, technical scheme is as follows, a kind of sensor hot standby control device online, special
Sign is that the control device includes loop back roll, kink frame, kink hydraulic cylinder, servo-hydraulic circuit and electrical equipment, is lived
It covers roller to be mounted on kink frame, kink hydraulic cylinder is connected with kink frame, and servo-hydraulic circuit is connected with kink hydraulic cylinder, institute
It includes control valve in angular transducer, servo-hydraulic circuit, the control cable of sensor, I/O modules and control to state electrical equipment
Device processed, angular transducer are mounted on loop back roll extending shaft, and the control valve in angular transducer and servo-hydraulic circuit passes through control
Cable processed is connected with I/O modules, and I/O modules are connected by cable with controller.
As an improvement of the present invention, the quantity of the angular transducer is two, and one of sensor is defined as
On-line sensor, another is positioned as hot standby sensor.
As an improvement of the present invention, two angular transducers access the same electrical equipment, synchronize detection in real time and live
Cover angle-data.
The control method of sensor hot standby control device online, which is characterized in that the control method is as follows：
1) first by two angle detecting sensors on loop equipment, one is defined as on-line sensor, and one
It is a to be defined as hot standby sensor；
2) data of two sensors detection all access same electric control system, synchronize detection kink angle number in real time
According to；
3) state of two sensors is uninterruptedly judged in real time in the controls,
4) data switching is carried out according to the sensor states of judgement.
As an improvement of the present invention, the method judged to sensor states in the step 3) is as follows：
3.1) electric control system have to the sensor of access whether be ready to, burn out detection function, if sensor
Hardware or wiring breaking and connecting, control system will produce this sensor and be ready to that signal does not arrive or disconnection fault, system are sent out
Sensor failure signals；
3.2) data of device action stroke are judged：If hot fine rolling unit kink actuating length has restriction,
Angle-data variation range is 0 °~60 °, if the angle-data of sensor detection has been more than 0 °~60 ° ranges, say
Bright sensor detection data error, system send out sensor failure signals；
3.3) data of device action speed are judged：If hot fine rolling unit kink movement speed has restriction,
Angle-data variation is less than 120 °/s, if the angle-data variation of a sensor detection has been more than 120 °/s, illustrate to pass
The interference of sensor detection data presence signal, mutation, error, system send out sensor failure signals.
As an improvement of the present invention, data switching, tool are carried out according to the sensor states of judgement in the step 4)
Body is as follows,
If 4.1) detect that on-line sensor breaks down, while hot standby sensor fault-free, then control system switches
Detection data to hot standby sensor is used to control, and electrical service personnel replace on-line sensor, control system using downtime
After system detection on-line sensor is replaced normally, original on-line sensor is identified as hot standby sensor, original hot standby sensing
Device is identified as on-line sensor；
4.2) if two sensors all fault-frees, control system select always the detection data of on-line sensor to be used for
Control；
If 4.3) detect that on-line sensor is normal, hot standby sensor fault, then, control system still select to pass online
Sensor data only send out hot standby sensor failure signals, electrical service personnel replace hot standby using downtime for controlling
It is normal to identify hot standby sensor after the hot standby replacing sensor of control system detection is normal for sensor.
Compared with the existing technology, the invention has the advantages that, which installs two on loop back roll extending shaft
Detection sensor two sensor states of real-time judge and on-line automatic can be sensed according to two sensor states
Device switches, and when realizing that one of them breaks down when two sensors, can be quickly switched into the hot standby of another sensor
Control device.When solving original hot rolling enterprise loop equipment angular transducer and breaking down, necessarily lead to mm finishing mill unit steel scrap,
It must shut down and replace the problem of sensor could produce, after implementing sensor backup technique, a sensor failure, no
It can influence to produce, fault sensor need not be replaced immediately, can wait for that downtime is replaced, and reduce equipment fault for enterprise, carry
High production efficiency, creates economic benefit.
Description of the drawings
Fig. 1 is control device schematic diagram of the present invention；
Fig. 2 is control flow schematic diagram of the present invention；
In figure：1, loop back roll, 2, kink frame, 3, kink hydraulic cylinder, 4, hydraulic circuit, 5, control valve, 6, angle sensor
Device, 7, control cable, 8, cable, 9, I/O modules, 10, controller.
Specific implementation mode：
In order to deepen the understanding of the present invention, the present embodiment is described in detail below in conjunction with the accompanying drawings.
Embodiment 1：Referring to Fig. 1, a kind of sensor hot standby control device online, the control device includes loop back roll 1, living
Frame 2, kink hydraulic cylinder 3, servo-hydraulic circuit 4 and electrical equipment are covered, loop back roll 1 is mounted on kink frame 2, kink liquid
Cylinder pressure 3 is connected with kink frame 2, and servo-hydraulic circuit 4 is connected with kink hydraulic cylinder 3, and the electrical equipment includes angle sensor
Control valve 5, the control cable 7 of sensor, I/O modules 9 and controller 10, angular transducer 6 in device 6, servo-hydraulic circuit
On loop back roll extending shaft, the control valve 5 in angular transducer 6 and servo-hydraulic circuit is by controlling cable 7 and I/O moulds
Block 9 is connected, and I/O modules 9 are connected by cable 8 with controller 10.The quantity of the angular transducer is two, one of to pass
Sensor is defined as on-line sensor, another is positioned as hot standby sensor, and two angular transducer accesses are same electrically to be set
It is standby, synchronize detection kink angle-data in real time.Under the control mode of kink position, controller sets operating angle angle value according to kink
And the deviation of the actually detected angle value of angular transducer carries out position closed loop adjusting, generates and adjusts given value, passes through I/O modules
Generate given value of current output, then by controlling cable transmission to the control valve in servo-hydraulic circuit, control valve obtain electric current to
Determine back valve core action, the hydraulic oil in hydraulic circuit opens size according to control valve core, increaseds or decreases in kink hydraulic cylinder
Hydraulic oil, with the increase and decrease of hydraulic oil, the piston rod of hydraulic cylinder generates to be stretched out or retract action, hydraulic cylinder are lived kink hydraulic cylinder
The action of stopper rod drives kink frame and loop back roll generation to swing up and down action, this swing up and down act by angular transducer into
Row detection, and I/O modules are transmitted to by controlling cable, controller reads the actual angle of the data generation kink of I/O modules
Value.
In the technical solution, two angle detecting sensors are installed on a loop back roll extending shaft, and access same
Controller, the same I/O modules, since it is the angle change for the same position for detecting kink, and two detection datas
Electrical processing unit is the same controller, I/O modules, thus be can ensure the two sensor accuracy of detection be it is consistent,
Detection data synchronizes.Error both in actual production can control in 0.01 ° of level range.
The sensor handoff procedure time is exactly the scan period of electric control system control program, as computer chip is transported
The increase of scanning frequency degree and memory in the current control system program scanning period, is increased to from pervious 100ms~1000ms
Between 1ms~20ms, that is to say, that the time of electric control system switching sensor only needs 1ms~20ms.It is most fast with kink
120 °/s of movement speed is calculated, and within this switching time, the possible maximum data variation of kink angle is 0.12 °~2.4 °.
0.01 ° of rank error and handoff procedure in conjunction with caused by two sensor accuracy of detection, detection data zeitgeber
Caused maximum data changes 0.12 °~2.4 °, this data variation amount is to belong to just in the kink angle control of hot rolling enterprise
It often occurs as that in the mm finishing mill unit operation of rolling in hot rolling enterprise, will not be had an impact to rolling within the scope of kink angle fluctuation ± 5 °,
So the technical program is feasible.
Operation principle：Referring to Fig. 1, Fig. 2, the control method of sensor hot standby control device online, the control method is such as
Under：
1) first by two angle detecting sensors on loop equipment, one is defined as on-line sensor, and one
It is a to be defined as hot standby sensor；
2) data of two sensors detection all access same electric control system, synchronize detection kink angle number in real time
According to；
3) state of two sensors is uninterruptedly judged in real time in the controls,
4) data switching is carried out according to the sensor states of judgement.
The method judged to sensor states in the step 3) is as follows：
3.1) electric control system have to the sensor of access whether be ready to, burn out detection function, if sensor
Hardware or wiring breaking and connecting, control system will produce this sensor and be ready to that signal does not arrive or disconnection fault, system are sent out
Sensor failure signals；
3.2) data of device action stroke are judged：If hot fine rolling unit kink actuating length has restriction,
Angle-data variation range is 0 °~60 °, if the angle-data of sensor detection has been more than 0 °~60 ° ranges, say
Bright sensor detection data error, system send out sensor failure signals；
3.3) data of device action speed are judged：If hot fine rolling unit kink movement speed has restriction,
Angle-data variation is less than 120 °/s, if the angle-data variation of a sensor detection has been more than 120 °/s, illustrate to pass
The interference of sensor detection data presence signal, mutation, error, system send out sensor failure signals.
Data switching is carried out according to the sensor states of judgement in the step 4), it is specific as follows,
If 4.1) detect that on-line sensor breaks down, while hot standby sensor fault-free, then control system switches
Detection data to hot standby sensor is used to control, and electrical service personnel replace on-line sensor, control system using downtime
After system detection on-line sensor is replaced normally, original on-line sensor is identified as hot standby sensor, original hot standby sensing
Device is identified as on-line sensor；
4.2) if two sensors all fault-frees, control system select always the detection data of on-line sensor to be used for
Control；
If 4.3) detect that on-line sensor is normal, hot standby sensor fault, then, control system still select to pass online
Sensor data only send out hot standby sensor failure signals, electrical service personnel replace hot standby using downtime for controlling
It is normal to identify hot standby sensor after the hot standby replacing sensor of control system detection is normal for sensor.
Application example 1：In electric control system control program scanning period 1ms, the hot fine rolling unit operation of rolling, to live
Cover 22.1 ° of angle on-line sensor detection data, 22.15 ° of hot standby sensor detection data, 120 °/s of kink movement speed,
For line sensor failure.
Electric control system is switched to from on-line sensor in hot standby sensor process, loop equipment angle change data
For：
1, at this time if kink is acted to the big direction of angle change：
On-line sensor detection data before data-switching of hot standby sensor detection data+kink action before switching
=22.15 °+120 °/s*1ms-22.1 °
=0.17 °
2, at this time if kink is acted to the small direction of angle change：
On-line sensor detection data before data-switching of hot standby sensor detection data-kink action before switching
=22.15 ° -120 °/s*1ms-22.1 °
=-0.07 °
Both less than ± 5 ° of kink angle-data variation in two kinds of situation lower sensor handoff procedures, in controlled range.
Application example 2：It is controlled in program scanning period 20ms, the hot fine rolling unit operation of rolling with electric control system,
22.1 ° of kink angle on-line sensor detection data, 22.15 ° of hot standby sensor detection data, 120 °/s of kink movement speed,
For on-line sensor breaks down.
Electric control system is switched to from on-line sensor in hot standby sensor process, loop equipment angle change data
For：
2, at this time if kink is acted to the big direction of angle change：
On-line sensor detection data before data-switching of hot standby sensor detection data+kink action before switching
=22.15 °+120 °/s*20ms-22.1 °
=2.45 °
2, at this time if kink is acted to the small direction of angle change：
On-line sensor detection data before data-switching of hot standby sensor detection data-kink action before switching
=22.15 ° -120 °/s*20ms-22.1 °
=-2.35 °
Both less than ± 5 ° of kink angle-data variation in two kinds of situation lower sensor handoff procedures, in controlled range.
It should be noted that above-described embodiment, protection domain not for the purpose of limiting the invention, in above-mentioned technical proposal
On the basis of made equivalents or replacement each fall within the range that the claims in the present invention are protected.
Claims (6)
1. a kind of sensor hot standby control device online, which is characterized in that the control device include loop back roll, kink frame,
Kink hydraulic cylinder, servo-hydraulic circuit and electrical equipment, loop back roll are mounted on kink frame, kink hydraulic cylinder and kink frame
Frame is connected, and servo-hydraulic circuit is connected with kink hydraulic cylinder, and the electrical equipment includes in angular transducer, servo-hydraulic circuit
Control valve, the control cable of sensor, I/O modules and controller, angular transducer are mounted on loop back roll extending shaft, angle
Control valve in sensor and servo-hydraulic circuit is connected by controlling cable with I/O modules, and I/O modules pass through cable and control
Device is connected.
2. sensor according to claim 1 hot standby control device online, which is characterized in that the number of the angular transducer
Amount is two, and one of sensor is defined as on-line sensor, another is positioned as hot standby sensor.
3. sensor according to claim 2 hot standby control device online, which is characterized in that two angular transducers accesses
The same electrical equipment synchronizes detection kink angle-data in real time.
4. the control method of claim 1-3 any one sensor hot standby control device online, which is characterized in that the control
Method processed is as follows：
1) first by two angle detecting sensors on loop equipment, one is defined as on-line sensor, and one fixed
Justice is hot standby sensor；
2) data of two sensors detection all access same electric control system, synchronize detection kink angle-data in real time；
3) state of two sensors is uninterruptedly judged in real time in the controls,
4) data switching is carried out according to the sensor states of judgement.
5. the control method of sensor according to claim 4 hot standby control device online, which is characterized in that the step
3) method judged to sensor states in is as follows：
3.1) electric control system have to the sensor of access whether be ready to, burn out detection function, if the hardware of sensor
Or wiring breaking and connecting, control system will produce this sensor and be ready to that signal does not arrive or disconnection fault, system send out sensing
Device fault-signal；
3.2) data of device action stroke are judged：As hot fine rolling unit kink actuating length has restriction, angle
Ranging from 0 °~60 ° of data variation, if the angle-data of sensor detection has been more than 0 °~60 ° ranges, illustrate to pass
Sensor detection data malfunctions, and system sends out sensor failure signals；
3.3) data of device action speed are judged：As hot fine rolling unit kink movement speed has restriction, angle
Data variation is less than 120 °/s, if the angle-data variation of a sensor detection has been more than 120 °/s, illustrate sensor
The interference of detection data presence signal, mutation, error, system send out sensor failure signals.
6. the control method of sensor according to claim 4 hot standby control device online, which is characterized in that the step
4) data switching is carried out according to the sensor states of judgement in, it is specific as follows,
If 4.1) detect that on-line sensor breaks down, while hot standby sensor fault-free, then control system is switched to heat
For the detection data of standby sensor for controlling, electrical service personnel replace on-line sensor, control system inspection using downtime
After surveying on-line sensor replacement normally, original on-line sensor is identified as hot standby sensor, original hot standby sensor mark
It is on-line sensor to know；
If 4.2) two sensors all fault-frees, control system selects always the detection data of on-line sensor for controlling
System；
If 4.3) detect that on-line sensor is normal, hot standby sensor fault, then, control system still selects on-line sensor
Data only send out hot standby sensor failure signals, electrical service personnel replace hot standby sensing using downtime for controlling
It is normal to identify hot standby sensor after the hot standby replacing sensor of control system detection is normal for device.
Priority Applications (1)
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|---|---|---|---|
| CN201710210888.5A CN108655193A (en) | 2017-03-31 | 2017-03-31 | Sensor hot standby control device online |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710210888.5A CN108655193A (en) | 2017-03-31 | 2017-03-31 | Sensor hot standby control device online |
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| CN108655193A true CN108655193A (en) | 2018-10-16 |
Family
ID=63784577
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111974815A (en) * | 2019-05-22 | 2020-11-24 | 宝山钢铁股份有限公司 | Device and method for judging state of looping roller for preventing strip steel from being scratched |
| CN114042759A (en) * | 2021-11-01 | 2022-02-15 | 北京科技大学设计研究院有限公司 | Method for automatically switching and detecting strip steel thickness difference instrument in rolling process |
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| CN114042759A (en) * | 2021-11-01 | 2022-02-15 | 北京科技大学设计研究院有限公司 | Method for automatically switching and detecting strip steel thickness difference instrument in rolling process |
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Application publication date: 20181016 |