CN111679627A - Distributed control method and system for stereo garage - Google Patents
Distributed control method and system for stereo garage Download PDFInfo
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- CN111679627A CN111679627A CN202010654649.0A CN202010654649A CN111679627A CN 111679627 A CN111679627 A CN 111679627A CN 202010654649 A CN202010654649 A CN 202010654649A CN 111679627 A CN111679627 A CN 111679627A
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- plc
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- stereo garage
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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
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
Abstract
The invention discloses a distributed control method and a distributed control system for a stereo garage, wherein a PLC (programmable logic controller) is arranged on a vehicle board, the PLC is connected with an actuating mechanism and a sensor of a parking space, all the PLC is mounted on a CANBus bus and then connected with a PLC main controller, and the PLC main controller is connected with a PLC upper computer; the PLC main controller sends a control signal to the PLC sub-controllers, the PLC sub-controllers control the executing mechanism, and the PLC upper computer realizes a logical operation function in control. The invention adopts the principle of distributed control, can solve the problems of complicated wiring, difficult debugging and the like in centralized control, and has the advantages of accurate control, low failure rate and the like.
Description
Technical Field
The invention relates to a distributed control method and a distributed control system for a stereo garage, and belongs to the technical field of intelligent control.
Background
A stereo garage is a mechanical or mechanical equipment system used to maximize access to stored vehicles. The system is an effective tool for improving the capacity of a parking lot, increasing the income and increasing the income of parking fees for professional parking lot management companies. The lifting and moving of each parking space in the stereo garage need a control system to control an actuating mechanism (motor). Among the current stereo garage, what mostly still adopted is centralized control formula, and actuating mechanism and the spacing sensor of all parking stalls all are connected to the PLC of switch board through the mode of direct wiring promptly, carry out centralized control by PLC. The centralized control method has the biggest problems of complex wiring and large engineering quantity, and is difficult to find if a problem occurs once, and also needs very complex debugging operation.
Disclosure of Invention
The invention aims to provide a distributed control method and a distributed control system for a stereo garage. The distributed control principle is adopted, the problems of complex wiring, difficult debugging and the like in centralized control can be solved, and the distributed control system has the advantages of accurate control, low failure rate and the like.
The technical scheme of the invention is as follows: a distributed control method of a stereo garage is characterized in that: the vehicle board is provided with the PLC sub-controllers which are connected with an actuating mechanism and a sensor of the parking place, all the PLC sub-controllers are mounted on the CANBus bus and then connected with the PLC main controller, and the PLC main controller is connected with the PLC upper computer; the PLC main controller sends a control signal to the PLC sub-controllers, the PLC sub-controllers control the executing mechanism, and the PLC upper computer realizes a logical operation function in control.
In the distributed control method of the stereo garage, the PLC main controller reads the addresses of all the PLC sub-controllers in a polling mode, if the abnormal conditions of address duplication or address shortage occur, an alarm module is arranged on the PLC main controller to report the abnormal conditions to a PLC host computer and send abnormal alarm signals to the PLC sub-controllers reporting duplicate addresses, and the PLC sub-controllers carry out alarm display so as to facilitate manual quick intervention for address modification and error correction.
In the distributed control method of the stereo garage, the PLC upper computer and the PLC main controller send heartbeat packets to each other periodically, so that abnormal communication conditions can be found in time, and the reliability of control is improved.
In the distributed control method of the stereo garage, the PLC sub-controller is provided with the self-diagnosis module, the self-diagnosis module is internally provided with the limit threshold data of each sensor, when the sensor data reaching the threshold is received, the PLC sub-controller directly stops the execution mechanism without sending the sensor data to the PLC main controller to wait for the corresponding control signal, so that the delay of limit control can be reduced, and the control precision is improved.
In the distributed control method for the stereo garage, the sending period of the heartbeat packet is 0.5 second. The time period is the optimal time period obtained by considering factors such as the running speed of the vehicle plate, the PLC communication baud rate, the PLC scanning period and the like, and the safety of the running of the vehicle plate can be ensured to the maximum extent while the normal running of the PLC is ensured.
The distributed control system for the stereo garage for realizing the method is characterized in that: the system comprises a main control cabinet and sub-control cabinets arranged on each vehicle board, wherein a PLC upper computer and a PLC main controller which are connected through RS-485 are arranged in each main control cabinet, and a PLC sub-controller which is connected with an actuating mechanism and a sensor of a parking place is arranged in each sub-control cabinet; each PLC sub-controller is connected with the PLC main controller through a CANBus bus.
In the distributed control system of the stereo garage, the PLC sub-controller is provided with a dial switch for setting an address.
In the distributed control system of the stereo garage, the PLC sub-controller is provided with an address error-reporting indicator lamp.
Compared with the prior art, the control task of the stereo garage is divided into the plurality of the PLCs, the PLC upper computer is responsible for logic operation, the PLC main controller is responsible for transmission of control signals, and the PLC sub-controller is responsible for final execution and limit control of the control signals. Meanwhile, the CANBus bus is used as a transmission medium between the PLC main controller and the PLC sub-controller, so that on the basis of improving transmission speed and reducing signal delay, the on-site cable laying amount is greatly reduced, and debugging work is more convenient.
According to the invention, an alarm mechanism is utilized, the address deployment error correction function of the PLC sub-controllers is added, when the PLC main controller polls addresses and a plurality of PLC sub-controllers report simultaneously, the PLC main controller can send alarm signals to the PLC sub-controllers reporting the addresses simultaneously, the alarm signals can be displayed on the PLC sub-controllers, such as LED indicator lamps, so that a worker can quickly find the PLC sub-controllers with problems according to the alarm display and carry out address resetting error correction on the PLC sub-controllers, thereby greatly saving the troubleshooting work when the addresses are deployed mistakenly and improving the deployment efficiency.
The invention also introduces more heartbeat packet functions in GPRS communication and CDMA communication in RS-485 communication between the PLC host computer and the PLC main controller. The communication abnormity between the PLC upper computer and the PLC main controller is monitored by the heartbeat packet, so that the actuating mechanism of the stereo garage does not act under the condition of communication abnormity, and inestimable loss can be caused otherwise. The control of the stereo garage has high requirements on the accuracy of the control, and a plurality of actuating mechanisms in the stereo garage need to be linked according to time sequence, so that the mechanical structure of the stereo garage is easy to be damaged due to the abnormity of control signals. The heartbeat package function is combined into RS-485 transmission, so that the distributed control of the stereo garage is very matched, and the failure rate of the whole stereo garage control system can be reduced to a great extent.
In addition, the invention also independently decomposes the function of limit control to a PLC sub-controller. If the sensor limit signal collected by the PLC sub-controller is transmitted to the PLC sub-controller firstly, and then the PLC sub-controller returns a control signal to control after logical operation, certain time delay is inevitable. Because the PLC sub-controller is closest to the sensor, the delay can be reduced to a great extent by directly feeding back a limit control signal, and the situation that the running of an actuating mechanism exceeds the limit is avoided.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
A distributed control system for a stereo garage, as shown in fig. 1: the parking lot control system comprises a main control cabinet 1 and sub-control cabinets 2 arranged on each vehicle board, wherein a PLC upper computer 101 and a PLC main controller 102 which are connected through RS-485 are arranged in each main control cabinet 1, and a PLC sub-controller 201 connected with an actuating mechanism 3 and a sensor 4 of a parking place is arranged in each sub-control cabinet 2; each PLC sub-controller 201 is connected to the PLC main controller 102 via a CANBus. And a dial switch for setting an address is arranged on the PLC sub-controller 201. And an address error-reporting indicating lamp is arranged on the PLC sub-controller 201.
The specific working principle is as follows.
1. And (5) deployment. Install sub-switch board on stereo garage's sweep, CANBus bus is walked the line and is arranged, all is connected to CANBus bus with the PLC sub-controller, and CANBus bus connection is to the main control cabinet. And setting the address of each PLC sub-controller through a dial switch. When the system is addressed, the PLC main controller sends an address polling signal, the PLC sub-controllers corresponding to the addresses report the signals to the PLC main controller, when a plurality of reporting signals exist at the same time, the address setting is repeated, and if the reporting signals do not exist within a certain time, the address is lost; when the address is repeated, the PLC main controller can send an alarm signal to the PLC sub-controllers with the same address, and the corresponding PLC sub-controllers can be lighted up for display. The staff can find the sub-control cabinet with the wrong address setting at the first time according to the lighting condition, and further address modification and error correction are carried out.
2. And (5) operating.
The PLC main controller sends a heartbeat packet to the PLC upper computer at regular time, and the PLC upper computer sends a feedback signal to the PLC main controller after receiving the heartbeat packet. If the PLC upper computer does not receive the heartbeat packet within the time exceeding the heartbeat packet period, reporting a fault to the PLC upper computer; and if the PLC main controller does not receive the feedback signal within the time exceeding the heartbeat packet period, stopping sending the control signal, waiting for troubleshooting, and trying to send an alarm signal with abnormal connection to the PLC upper computer.
Under the normal condition, carry out logical operation by the PLC host computer to come to send control signal to the PLC sub-controller by PLC main control unit, the PLC sub-controller is controlled actuating mechanism after accepting control signal, when actuating mechanism operation after target in place trigger the sensor, produce the spacing signal of sensor, take over control after the spacing signal of sensor is received to the PLC sub-controller, directly carry out limit control to actuating mechanism, to the PLC main control unit feedback action execution condition simultaneously.
Claims (8)
1. A distributed control method for a stereo garage is characterized by comprising the following steps: the vehicle board is provided with the PLC sub-controllers which are connected with an actuating mechanism and a sensor of the parking place, all the PLC sub-controllers are mounted on the CANBus bus and then connected with the PLC main controller, and the PLC main controller is connected with the PLC upper computer; the PLC main controller sends a control signal to the PLC sub-controllers, the PLC sub-controllers control the executing mechanism, and the PLC upper computer realizes a logical operation function in control.
2. The distributed control method for the stereo garage according to claim 1, wherein: the PLC main controller reads the addresses of all PLC sub-controllers in a polling mode, if the abnormal conditions of address repetition or lack occur, an alarm module is arranged on the PLC main controller to report the abnormal conditions to a PLC upper computer, an abnormal alarm signal is sent to the PLC sub-controller reporting the repeated addresses, and alarm display is carried out on the PLC sub-controller so that manual quick intervention can be carried out to modify and correct the addresses.
3. The distributed control method for the stereo garage according to claim 1, wherein: the PLC host computer and the PLC main controller send heartbeat packets to each other regularly so as to ensure that abnormal communication conditions can be found in time and improve the reliability of control.
4. The distributed control method for the stereo garage according to claim 1, wherein: the PLC sub-controller is provided with a self-diagnosis module, the self-diagnosis module is internally provided with limit threshold data of each sensor, when the sensor data reaching the threshold is received, the PLC sub-controller directly stops the actuating mechanism without sending the sensor data to the PLC main controller to wait for a corresponding control signal, so that the delay of limit control can be reduced, and the control precision is improved.
5. The distributed control method for the stereo garage according to claim 3, wherein: the sending period of the heartbeat packet is 0.5 second.
6. The distributed control system for the stereo garage for implementing the method of any one of claims 1-5, wherein: the parking lot control system comprises main control cabinets (1) and sub-control cabinets (2) arranged on each vehicle board, wherein a PLC (programmable logic controller) upper computer (101) and a PLC main controller (102) which are connected through RS-485 are arranged in each main control cabinet (1), and a PLC sub-controller (201) connected with an actuating mechanism (3) and a sensor (4) of a parking space is arranged in each sub-control cabinet (2); each PLC sub-controller (201) is connected with the PLC main controller (102) through a CANBus bus.
7. The distributed control system for a stereo garage of claim 6, wherein: and a dial switch for setting an address is arranged on the PLC sub-controller (201).
8. The distributed control system for a stereo garage of claim 6, wherein: and an address error reporting indicator lamp is arranged on the PLC sub-controller (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010654649.0A CN111679627A (en) | 2020-07-09 | 2020-07-09 | Distributed control method and system for stereo garage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010654649.0A CN111679627A (en) | 2020-07-09 | 2020-07-09 | Distributed control method and system for stereo garage |
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| CN111679627A true CN111679627A (en) | 2020-09-18 |
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| CN202010654649.0A Pending CN111679627A (en) | 2020-07-09 | 2020-07-09 | Distributed control method and system for stereo garage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113238542A (en) * | 2021-04-06 | 2021-08-10 | 江苏普腾停车设备有限公司 | Sub-control system |
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| CN106760824A (en) * | 2017-02-20 | 2017-05-31 | 西南科技大学 | A kind of two stage control system based on vertical circulation multi-storied garage |
| CN206270749U (en) * | 2016-12-08 | 2017-06-20 | 山东欧龙电子科技有限公司 | A kind of distributed three-dimensional garage control system based on CAN |
| CN206397235U (en) * | 2016-12-09 | 2017-08-11 | 张世森 | A kind of lift-sliding multi-storied garage intelligent control system |
| CN109004292A (en) * | 2018-06-05 | 2018-12-14 | 安徽锐能科技有限公司 | A kind of battery management system with automatic addressing unit |
| CN110830349A (en) * | 2019-11-15 | 2020-02-21 | 宁波兴为汽车电子有限公司 | Universal address allocation method for vehicle LIN switch slave control module |
-
2020
- 2020-07-09 CN CN202010654649.0A patent/CN111679627A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206270749U (en) * | 2016-12-08 | 2017-06-20 | 山东欧龙电子科技有限公司 | A kind of distributed three-dimensional garage control system based on CAN |
| CN206397235U (en) * | 2016-12-09 | 2017-08-11 | 张世森 | A kind of lift-sliding multi-storied garage intelligent control system |
| CN106760824A (en) * | 2017-02-20 | 2017-05-31 | 西南科技大学 | A kind of two stage control system based on vertical circulation multi-storied garage |
| CN109004292A (en) * | 2018-06-05 | 2018-12-14 | 安徽锐能科技有限公司 | A kind of battery management system with automatic addressing unit |
| CN110830349A (en) * | 2019-11-15 | 2020-02-21 | 宁波兴为汽车电子有限公司 | Universal address allocation method for vehicle LIN switch slave control module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113238542A (en) * | 2021-04-06 | 2021-08-10 | 江苏普腾停车设备有限公司 | Sub-control system |
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