CN201773302U - Open-loop and closed-loop control switching device of engineering machinery - Google Patents
Open-loop and closed-loop control switching device of engineering machinery Download PDFInfo
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- CN201773302U CN201773302U CN2010201257049U CN201020125704U CN201773302U CN 201773302 U CN201773302 U CN 201773302U CN 2010201257049 U CN2010201257049 U CN 2010201257049U CN 201020125704 U CN201020125704 U CN 201020125704U CN 201773302 U CN201773302 U CN 201773302U
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- loop control
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Abstract
The utility model discloses an open-loop and closed-loop control switching device of engineering machinery, which comprises a switching control device, a PLC controller, a sensor system, an actuating mechanism and a display screen. An output end of the switching control device is connected to a control end of the PLC controller, an output end of the PLC controller is connected with a control end of the actuating mechanism, an input end of the sensor system is in communication connection to the actuating mechanism, an output end of the sensor system is connected to an input end of the PLC controller, and an input end of the display screen is connected to an output end of the PLC controller. The open-loop and closed-loop control switching device has the technical advantages that when a sensor used for acquiring feedback information in a closed-loop control system is in failure, the PLC controller can be controlled to shield the sensor system through a switching control device so that original closed-loop control is changed into open-loop control, the engineering machinery can still work normally when the sensor becomes invalid, and construction cannot be delayed. Simultaneously, the open-loop and closed-loop control switching device can warn users through the display screen.
Description
Technical field
The utility model relates to a kind of engineering machinery control switch device.
Background technology
At present, improving day by day and promoting along with the engineering machinery function, it is more complicated that the automatically controlled system of engineering machinery also becomes, present electric-control system generally all carries out the collection of feedback information by a large amount of sensors is installed, to realize the close loop maneuver of whole engineering machinery, reach better work effect, and all being realization for certain function, every suit sensing system connects, in case a certain operative sensor damages or line failure, The whole control system just can't realize closed-loop control, just might cause some or all of systemic breakdown, can only keep in repair by the mode of emat sensor more, this will greatly influence the normal operation and the construction speed of equipment.
The utility model content
The technical matters that when the sensor of gathering feedback information goes wrong, may cause the total system paralysis for the engineering machinery that solves existing closed-loop control, the utility model provides a kind of can shield out of order sensor when the closed-loop control sensor goes wrong, original closed-loop control is changed into engineering machinery open loop, the closed-loop control switching device shifter of open loop control.
In order to realize above-mentioned technique effect, the technical solution of the utility model is: comprise switching control, PLC controller, sensing system and topworks, the output terminal of described switching control is connected to the control end of PLC controller, the output terminal of described PLC controller is connected to the control end of topworks, the input end of described sensing system communicates to connect to topworks, and described sensing system output terminal is connected to the input end of PLC controller.
Above-mentioned a kind of engineering machinery open loop, closed-loop control switching device shifter also comprise display screen, and the input end of display screen is connected to the output terminal of PLC controller.
Technique effect of the present utility model is, when the sensor that is used to gather feedback information in closed-loop control system breaks down, can control PLC controller shield sensor system by switching control, original closed-loop control is changed into open loop control, engineering machinery still can be worked when sensor failure as usual, can not delay construction task.Come to send prompting by display screen simultaneously, illustrate that this mode is a kind of contingency mode of temporary, have the danger of operation, remind user's emat sensor more as early as possible to the user.After more finishing changing sensor, be that closed loop control mode and elimination are reported to the police by switching control with system reset again.
Below in conjunction with accompanying drawing the utility model is made further instruction.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Embodiment
Referring to Fig. 1, set up a control device of forming by switching control, PLC controller, sensing system, topworks and display screen.The output terminal of switching control is connected to the control end of PLC controller, and the sensor output terminal links to each other with the input end of PLC controller, and sensor may be one or a plurality of, can collect the electric current of 4～20MA or the voltage signal of 0～10V when normally connecting; Described PLC controller is the engineering machinery nonshared control unit of IFM company series band analog quantity input; Described display screen links to each other with controller, for Schneider XT2000 series touch-screen, can pass through RS232 communication and controller swap data.When the sensor that is used to gather feedback signal breaks down, operating personnel can control the PLC controller by switching control, shield sensor from system, make The whole control system no longer accept to gather next feedback signal from sensor, just closed-loop control is converted to open loop control, the PLC controller shows caution signal by display screen simultaneously, changes sensing system to remind operating personnel to overhaul as early as possible after the task of finishing the work.
Claims (2)
1. an engineering machinery open loop, closed-loop control switching device shifter, it is characterized in that, comprise switching control, PLC controller, sensing system and topworks, the output terminal of described switching control is connected to the control end of PLC controller, the output terminal of described PLC controller is connected to the control end of topworks, the input end of described sensing system communicates to connect to topworks, and described sensing system output terminal is connected to the input end of PLC controller.
2. a kind of engineering machinery open loop according to claim 1, closed-loop control switching device shifter is characterized in that also comprise display screen, the input end of display screen is connected to the output terminal of PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201257049U CN201773302U (en) | 2010-03-09 | 2010-03-09 | Open-loop and closed-loop control switching device of engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201257049U CN201773302U (en) | 2010-03-09 | 2010-03-09 | Open-loop and closed-loop control switching device of engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773302U true CN201773302U (en) | 2011-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201257049U Expired - Fee Related CN201773302U (en) | 2010-03-09 | 2010-03-09 | Open-loop and closed-loop control switching device of engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201773302U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103092120A (en) * | 2011-10-27 | 2013-05-08 | 北京航天发射技术研究所 | Highly-reliable control system and highly-reliable control method of oscillating bar |
-
2010
- 2010-03-09 CN CN2010201257049U patent/CN201773302U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103092120A (en) * | 2011-10-27 | 2013-05-08 | 北京航天发射技术研究所 | Highly-reliable control system and highly-reliable control method of oscillating bar |
| CN103092120B (en) * | 2011-10-27 | 2015-06-03 | 北京航天发射技术研究所 | Highly-reliable control system and highly-reliable control method of oscillating bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Yuelu District City, Hunan province 410205 Changsha Lugu Road No. 677 ZOOMLION Lugu Industrial Park Patentee after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. Address before: Yuelu District City, Hunan province 410205 Changsha Lugu Road No. 677 ZOOMLION Lugu Industrial Park Patentee before: Chang Sha Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20170309 |