WO2023179148A1

WO2023179148A1 - Synchronous control method and system for multiple segments of assembly lines

Info

Publication number: WO2023179148A1
Application number: PCT/CN2022/142696
Authority: WO
Inventors: 滕伟佳; 万健; 李浪; 仲齐波
Original assignee: 博众精工科技股份有限公司
Priority date: 2022-03-22
Filing date: 2022-12-28
Publication date: 2023-09-28
Also published as: CN114625092A

Abstract

Disclosed in the present application are a synchronous control method and system for multiple segments of assembly lines. Each segment of assembly line is provided with an assembly line control device. The synchronous control method comprises: each assembly line control device monitoring, in real time during a line production process, an operation state of an assembly line where the assembly line control device is located, and performing, in real time, digital IO interaction by means of an assembly line control device which is connected to the assembly line control device, so as to acquire an operation state of at least one of a previous segment of assembly line and the next segment of assembly line; and in response to determining that one segment of assembly line has an abnormal operation state and thus becomes an alarm trigger station, an assembly line control device of the alarm trigger station controlling the assembly line where the assembly line control device is located to stop operating, and sending alarm synchronization information to assembly line control devices of assembly lines other than the alarm trigger station, so as to control all the assembly lines to stop operating.

Description

A synchronous control method and system for multi-section pipelines

This application claims priority to the Chinese patent application with application number 202210286169.2, which was submitted to the China Patent Office on March 22, 2022. The entire content of this application is incorporated into this application by reference.

Technical field

The embodiments of the present application relate to the field of pipeline technology, for example, to a synchronous control method and system for a multi-stage pipeline.

Background technique

The industrial automation assembly line is a production mode that uses automated machinery. Many products are assembled and manufactured using automated assembly lines. The industrial automation assembly line plays an important role in the manufacturing industry.

At present, in the automation industry, the logic implementation of simultaneous entry and exit of streamline equipment is relatively cumbersome. At present, automated streamline equipment basically does not use the simultaneous entry and exit function, resulting in equipment efficiency that cannot be further improved. Streamline interaction uses the Surface Mount Equipment Manufacturers Association (SMEMA) interface protocol, which is a common protocol for the international Surface Mount Technology (SMT) industry. This protocol has few interface definitions, resulting in incomplete streamline control functions. , equipment abnormal alarms or stops need to be dealt with one by one, requiring a lot of human intervention, and it is impossible to achieve a complete stop and simple recovery function. Therefore, how to make the assembly line more concise and stable in the use of simultaneous entry and exit, improve the efficiency of entering and exiting vehicles in the assembly line, improve equipment performance, reduce the difficulty of exception handling, and reduce labor maintenance costs has become an urgent technical problem to be solved.

Contents of the invention

Embodiments of the present application provide a synchronous control method and system for multi-section pipelines to achieve simple and stable simultaneous entry and exit control of the pipeline, improve the efficiency of vehicles entering and exiting the pipeline, improve equipment performance, reduce the difficulty of exception handling, and reduce labor maintenance costs. .

In the first aspect, embodiments of the present application provide a synchronous control method for a multi-section pipeline. Each section of the pipeline is provided with a streamline control device, and the connection method between the multiple streamline control devices includes following the multiple streamline control devices. The working sequences of the corresponding multiple sections of the pipeline are connected end to end in sequence; the method includes:

Each flow line control device monitors the working status of the assembly line in real time during the assembly line operation, and performs digital input and output IO interaction in real time through the flow line control device connected to each flow line control device to obtain the previous section of the assembly line and the next section of the assembly line. The working status of at least one of the

In response to determining that the working status of a segment of the assembly line is abnormal, it becomes an alarm triggering station. The assembly line controlled by the assembly line control equipment of the alarm triggering station stops working, and based on the connection relationship between multiple assembly line control devices in sequence, the alarm triggering station is The streamline control equipment of the assembly line outside the alarm triggering station sends alarm synchronization information to control all assembly lines to stop working.

In the second aspect, embodiments of the present application provide a multi-stage pipeline synchronization control system, including:

A plurality of streamline control devices, each streamline control device corresponding to a section of the pipeline, and the connection method between the plurality of pipeline control devices includes connecting them end to end according to the working order of the multiple sections of the pipeline respectively corresponding to the multiple streamline control devices;

Among them, each streamline control device is set to: monitor the working status of the assembly line in real time during the pipeline operation process, and perform digital input and output IO interaction in real time through the streamline control device connected to each streamline control device to obtain the previous segment The working status of at least one of the assembly line and the subsequent assembly line; each streamline control device is also set to: in response to determining that the working status of the assembly line where each streamline control device is located is abnormal and becomes an alarm triggering station, each streamline control device The assembly line where the stop is controlled is stopped, and according to the connection relationship between multiple assembly line control devices connected end to end, alarm synchronization information is sent to the assembly line control devices of the assembly line except the alarm triggering station to control all assembly lines. stop working.

Description of the drawings

Figure 1 is a flow chart of a multi-stage pipeline synchronization control method provided by an embodiment of the present application;

Figure 2 is a structural block diagram of a multi-stage pipeline control device provided by an embodiment of the present application;

Figure 3 is a flow chart of another multi-stage pipeline synchronization control method provided by an embodiment of the present application;

Figure 4 is a structural block diagram of another multi-stage pipeline control device provided by an embodiment of the present application;

Figure 5 is a flow chart of the operation sequence of a multi-stage assembly line in the connection mode of the streamline control equipment shown in Figure 4;

FIG. 6 is a flow chart of another multi-stage pipeline synchronization control method provided by an embodiment of the present application.

Detailed ways

Embodiments of the present application provide a synchronization control method for a multi-section pipeline. Figure 1 is a flow chart of a synchronization control method for a multi-section pipeline provided by an embodiment of the present application. Referring to Figure 1, the synchronization control method for a multi-section pipeline includes:

S110. Each flow line control device monitors the working status of the station in real time during the flow operation process, and performs digital input and output (Input Output, IO) interaction through the connected flow line control device to obtain the previous station and/or the next station. The working status of the station.

For example, Figure 2 is a structural block diagram of a streamline control device for a multi-section pipeline provided by an embodiment of the present application. Referring to Figure 2, each section of the pipeline is provided with a pipeline control device 100, and the connection method between the multiple pipeline control devices 100 Including connecting them end to end according to the working order of the corresponding pipeline. For example, Figure 2 includes a total of four sections of the assembly line, and the working order of the four sections of the assembly line is the loading station, the first workstation, the second workstation, and the unloading station. The flow line control device 110 of the loading station is connected to the flow line control device 120 of the first workstation. The flow line control device 120 of the first workstation is also connected to the flow line control device 130 of the second workstation. The flow line control device of the second workstation The device 130 is also connected to the flow line control device 140 of the unloading station. Each line control device 100 monitors and controls the working status of the station in real time during the flow operation process. The flow line control device 100 can monitor whether an abnormality occurs in itself and the corresponding assembly line in real time during the flow operation process. For example, when a fault occurs that may endanger the safety of workers and requires the assembly line operation to be suspended, the streamline control device 100 controls the suspension of the assembly line at the station where it is located, such as suspending the actions of receiving and sending vehicles between the devices.

Moreover, each flow line control device 110 also performs digital IO interactions through connected flow line control devices during the assembly process to obtain the working status of the previous station and/or the next station. For example, while monitoring the working status of the first workstation in real time, the flow line control device 120 of the first workstation also performs digital IO interaction with the flow line control device 110 of the loading station to obtain the working status of the previous station; and the flow line control device 110 of the loading station. The streamline control device 130 of the two workstations performs digital IO interaction to obtain the working status of the subsequent station. When the flow line control device 120 of the first workstation obtains that the working normal state of at least one of the loading station and the second workstation is an abnormal state, it also controls the suspension of the assembly line of this station (the first workstation).

In addition, each flow line control device 100 monitors the working status of its station in real time during the assembly line operation. When an abnormal state occurs that requires the assembly line operation to be suspended, the flow line control device 100 can also notify the front and rear station equipment of the current station through the SMEMA digital IO interface. If the equipment is abnormal, the streamline movement of the front and rear stations will be immediately suspended. Through digital IO interaction, the synchronous control of multi-section pipelines between multiple devices is realized, making the use of pipelines in and out at the same time more concise and stable.

S120. If the working status of one of the stations is abnormal and it becomes an alarm triggering station, the streamline control device of the alarm triggering station controls the assembly line of the station where it is stopped, and based on the connection relationship between multiple streamline control devices connected end to end, Send alarm synchronization information to other assembly line control devices to control all assembly lines to suspend work.

For example, each flow line control device 100 monitors the working status of its station in real time during the assembly process, and performs digital IO interactions through connected flow line control devices to obtain the working status of the previous station and/or the next station. If the working status of one of the stations is abnormal and it becomes an alarm triggering station, the streamline control device 100 of the alarm triggering station controls the assembly line of the stopped station, and based on the connection relationship between multiple streamline control devices 100 connected end to end, Alarm synchronization information is sent to other pipeline control devices 100 to control all pipelines to suspend their work.

For example, it includes a total of four sections of assembly line, and the working sequence of the four sections of the assembly line is the loading station, the first workstation, the second workstation, and the unloading station. The streamline control device 120 of the first workstation detects that the working state of the first workstation is an abnormal state and becomes an alarm triggering station. While controlling the assembly line of the station where it is stopped, the flow line control device 120 of the first workstation notifies the flow line control device 110 of the loading station through the SMEMA digital IO interface that the equipment of the station is abnormal, and the flow line control device 110 of the loading station immediately pauses. The assembly line of the loading station; and notifying the flow line control device 130 of the second workstation through the SMEMA digital IO interface that the equipment of the second workstation is abnormal, and the flow line control device 130 of the second workstation immediately suspends the assembly line of the second workstation. The flow line control device 130 of the second workstation then notifies the flow line control device 140 of the unloading station through the SMEMA digital IO interface, and the flow line control device 140 of the unloading station immediately suspends the assembly line of the unloading station. When equipment enters and exits at the same time and some abnormalities occur in the equipment, the entry and exit of the entire streamline vehicle can be suspended to reduce personnel intervention.

The embodiment of the present application provides a multi-segment pipeline synchronization control method. Each pipeline control device adds scanning for alarm and stop digital IO during real-time monitoring, binds the status of the front and rear station equipment, and stops the current equipment simultaneously when the status changes. Notify the front and rear station equipment through the interface that the equipment of the current station is abnormal, and the streamline actions of the front and rear station will be immediately suspended. Through this interactive logic, all streamlines can be stopped synchronously when a piece of equipment is abnormal, thus achieving simple and stable simultaneous entry and exit control of the assembly line, improving the efficiency of vehicles entering and exiting the assembly line, improving equipment performance, reducing the difficulty of handling exceptions, and reducing manpower. Maintenance costs.

It should be noted that the synchronization control method of the multi-section pipeline provided by the embodiment of the present application scans in real time when the pipeline is running, and is controlled separately from the specific operation process of the current job. It can shorten the scanning cycle of alarm and stop digital IO, and scan the status signals of front and rear station equipment, improve the timeliness of exception handling, and ensure the safety of staff.

Figure 3 is a flow chart of another multi-stage pipeline synchronization control method provided by an embodiment of the present application. Referring to Figure 3, the multi-stage pipeline synchronization control method includes:

S210. Each flow line control device monitors the working status of its station in real time during the flow operation process, and performs digital IO interaction through the connected flow line control device to obtain the working status of the previous station and/or the next station.

For example, the connection port of each streamline control device includes a first alarm signal terminal for acquiring an alarm signal sent by the streamline control device of the previous station and/or a second alarm signal terminal used for acquiring an alarm signal sent by the streamline control device of the next station. Alarm signal terminal; each flow line control device performs digital IO interaction in real time through the connected flow line control device during the flow operation process to obtain the working status of the previous station and/or the next station, including:

Scan the first digital IO signal at the first alarm signal terminal in real time to determine whether the first digital IO signal is a bound IO alarm signal. Based on the determination result that the first digital IO signal is a bound alarm IO signal, determine the occurrence of the previous station abnormal;

Scan the second digital IO signal at the second alarm signal terminal in real time, determine whether the second digital IO signal is a bound alarm IO signal, and determine the next station occurrence based on the determination result that the second digital IO signal is a bound alarm IO signal. abnormal.

S220. When the working status of one of the stations is abnormal and it becomes an alarm triggering station, the streamline control device of the alarm triggering station controls the assembly line of the station where the stop is located, and based on the connection relationship between multiple streamline control devices connected end to end, to The rest of the pipeline control equipment sends alarm synchronization information to control the suspension of all pipelines.

S230. After the alarm triggering station returns to normal and becomes a recovery triggering station, the pipeline control device of the recovery triggering station controls the pipeline of the recovery station, and based on the connection relationship between multiple pipeline control devices connected end to end in sequence, to the remaining flow lines. The line control device sends recovery synchronization information to control the entire pipeline recovery work.

For example, real-time monitoring of the working status of the station by the streamline control equipment during the assembly process may include: real-time monitoring of the assembly line control equipment to see whether it is abnormal during the assembly process, and monitoring whether the corresponding assembly line equipment is abnormal; in response to determining the flow rate, When at least one of the line control equipment and the corresponding assembly line equipment is abnormal, the working status of the station is determined to be an abnormal state; in response to the determination that the assembly line control equipment and the corresponding assembly line equipment are normal respectively, the working status of the station is determined to be a normal state. . Based on the sequential end-to-end connection between the streamline control devices, resume synchronization information is sent to the remaining streamline control devices to control the resumption of all assembly lines, and alarm synchronization information is sent to the remaining streamline control devices to control the suspension of all assembly lines. in the same way.

For example, referring to Figure 2, the assembly line includes a total of four sections, and the working order of the four sections of the assembly line is the loading station, the first workstation, the second workstation, and the unloading station. The streamline control device 120 of the first workstation detects that the working status of the first workstation is abnormal and becomes an alarm triggering station. After the first workstation returns to normal and becomes the recovery trigger station, the streamline control device 120 of the first workstation controls the assembly line of the restored station and at the same time notifies the streamline control device 110 of the loading station through the SMEMA digital IO interface that the equipment of the station returns to normal. , the flow line control equipment 110 of the loading station immediately restores the assembly line of the loading station; and notifies the flow line control equipment 130 of the second workstation through the SMEMA digital IO interface that the equipment of this station returns to normal, and the flow line control equipment 130 of the second workstation Immediately resume the pipeline at the second workstation. The flow line control device 130 of the second workstation then notifies the flow line control device 140 of the unloading station through the SMEMA digital IO interface with the flow line control device 140 of the unloading station, and the flow line control device 140 of the unloading station immediately resumes unloading. The assembly line at the material station.

The embodiment of the present application provides a multi-segment pipeline synchronization control method. Each pipeline control device adds scanning for alarm and stop digital IO during real-time monitoring, binds the status of the front and rear station equipment, and stops the current equipment simultaneously when the status changes. Notify the front and rear station equipment through the interface that the equipment of the current station is abnormal, and the streamline actions of the front and rear stations are immediately suspended. After waiting for the abnormality to recover, the current station returns to normal mode and the front and rear stations resume the current actions from the pause. Through this interactive logic, all streamlines can be stopped synchronously when one piece of equipment is abnormal. When the abnormality is restored, the equipment at the front and rear stations can continue to operate. This achieves simple and stable simultaneous entry and exit control of the assembly line and improves the efficiency of vehicles entering and exiting the assembly line. Improve equipment performance, reduce the difficulty of exception handling, and reduce labor maintenance costs.

For example, if the alarm triggering station is a workstation, based on the end-to-end connection between the streamline control devices, alarm synchronization information is sent to the other streamline control devices, including:

The flow line control equipment of the alarm triggering station sends alarm synchronization information to the flow line control equipment of the previous station and the next station at the same time to control the flow line control equipment on both sides to continue to the flow lines of the respective previous station or next station. The control device sends alarm synchronization information until the loading station and unloading station receive the alarm synchronization information.

It can be understood that the alarm triggering station is the station located in the middle of a multi-section assembly line. The alarm triggering station has at least one station before it in the working sequence, and has at least one station after it in the working sequence. The flow line control equipment of the alarm triggering station sends alarm synchronization information to the flow line control equipment of the previous station and the next station at the same time to control the flow line control equipment on both sides to continue to the flow lines of the respective previous station or next station. The control device sends alarm synchronization information until the loading station and unloading station receive the alarm synchronization information. When the station located in an assembly line in the middle returns to normal from an abnormal state, the equipment at the front and rear stations can continue to operate, and the flow line control equipment on both sides of the control unit continues to send recovery messages to the flow line control equipment at the previous or next station. Synchronize information until the loading station and unloading station receive synchronization recovery information.

For example, if the alarm triggering station is a loading station, based on the end-to-end connection between the flow line control equipment, alarm synchronization information will be sent to the other flow line control equipment, including:

The flow line control equipment of the alarm triggering station sends alarm synchronization information to the flow line control equipment of the first work station to control the flow line control equipment of the remaining stations to continue along the working sequence direction of the assembly line and to the flow lines of the respective next stations in turn. The line control equipment sends alarm synchronization information until the unloading station receives the alarm synchronization information.

It can be understood that the alarm triggering station is the station of the first working assembly line in the multi-section assembly line. At this time, the flow line control equipment of the alarm triggering station sends alarm synchronization information to the flow line control equipment of the first workstation to control the flow line control equipment of the other stations to continue along the working sequence direction of the assembly line and to their respective next stations. The station's streamline control equipment sends alarm synchronization information until the unloading station receives the alarm synchronization information.

For example, if the alarm triggering station is a unloading station, based on the end-to-end connection between the flow line control devices, alarm synchronization information will be sent to the other flow line control devices, including:

The flow line control equipment of the alarm triggering station sends alarm synchronization information to the flow line control equipment of the last work station to control the flow line control equipment of the other stations to continue along the reverse direction of the working sequence of the assembly line, and to the flow line control equipment of the respective previous stations in turn. The streamline control equipment sends alarm synchronization information until the loading station receives the alarm synchronization information.

It can be understood that the alarm triggering station is the station of the last working assembly line in the multi-section assembly line. At this time, the flow line control equipment of the alarm triggering station sends alarm synchronization information to the flow line control equipment of the last work station to control the flow line control equipment of the other stations to continue along the opposite direction of the working sequence of the assembly line and to their respective upper stations in turn. The flow line control equipment of one station sends alarm synchronization information until the loading station receives the alarm synchronization information.

Based on the above embodiments, in one embodiment of the present application, the multi-section assembly line includes a loading station, at least one work station and an unloading station; according to the working sequence of the corresponding assembly line, the flow line control of the loading station The flow line control equipment of the equipment, the workstation and the flow line control equipment of the unloading station are connected in turn; and the flow line control equipment of the unloading station is also connected to the flow line control equipment of the loading station. The unloading station is the upper part of the loading station. one stop. FIG. 4 is a structural block diagram of another multi-stage pipeline control device provided by an embodiment of the present application. Fig. 5 is a flow chart of the operation sequence of the multi-stage pipeline in the connection mode of the pipeline control device shown in Fig. 4. Referring to Figures 4 and 5, the multi-section assembly line includes a loading station 1, a first workstation 2, a second workstation 3 and an unloading station 4; according to the working sequence of the corresponding assembly line, the streamline control equipment 110 of the loading station 1, The flow line control device 120 of the first workstation 2, the flow line control device 130 of the second workstation 3, and the flow line control device 140 of the unloading station 4 are connected in sequence; and the flow line control device 140 of the unloading station 4 is also connected to the upper station 4. The flow line control device 110 of the material station 1 is connected.

Therefore, based on the end-to-end connection between streamline control devices, alarm synchronization information is sent to other streamline control devices, including:

The flow line control equipment of the alarm triggering station sends alarm synchronization information to the flow line control equipment of the previous station and the next station to control the flow line control on both sides to continue to the flow line control equipment of the respective previous station or next station. The two streamline control devices that send alarm synchronization information until they finally receive the alarm synchronization information are two connected streamline control devices.

Wherein, the connection port of each streamline control device includes a first alarm signal terminal for acquiring an alarm signal sent by the streamline control device of the previous station and a second alarm signal used for acquiring an alarm signal sent by the streamline control device of the next station. end; each flow line control device performs digital IO interaction in real time through the connected flow line control device during the assembly process to obtain the working status of the previous station and the next station.

For example, if the alarm triggering station is the loading station 1, the loading station 1 can send alarm synchronization information to the first workstation 2 and obtain the working status of the first workstation. The loading station 1 can also send alarm synchronization information to the lower station 4. Alarm synchronization information and obtain the working status of the unloading station 4. Similarly, if the alarm triggering station is the unloading station 4, the unloading station 4 can send alarm synchronization information to the second workstation 3 and obtain the working status of the second workstation 3. The unloading station 4 can also send an alarm to the upper station 1. Synchronize information and obtain the working status of loading station 1. That is to say, in the above embodiments, the connection mode between multiple flow line control devices 100 is to connect end to end according to the working order of the corresponding assembly lines. On this basis, in the embodiment of the present application, the flow of the unloading station 4 is The line control device 140 is also connected to the flow line control device 110 of the loading station 1 to form a closed-loop interactive control. The carrier of the unloading station 4 can return to the loading station 1 .

In another embodiment of the present application, synchronization information (synchronization alarm information or synchronization recovery information) can be exchanged between the pipeline control devices of each two sections of the pipeline. When an abnormality occurs in one of the streamline control devices, alarm information can be synchronized to any other streamline control device. When the streamline control device returns from an abnormal state to a normal state, information can be restored synchronously to any other streamline control device. For example, multiple sections of assembly lines are connected in sequence according to the working order of the corresponding assembly lines; and the flow line control equipment of the unloading station is also connected to the flow line control equipment of the loading station. It can make the use of streamlines with the same entry and exit more concise and stable, while simplifying the connection relationship and reducing costs.

Figure 6 is a flow chart of another multi-stage pipeline synchronization control method provided by an embodiment of the present application. Referring to Figure 6, the multi-stage pipeline synchronization control method includes:

S310, bind alarm and stop digital IO signal.

For example, the stop digital IO signal can be understood as a stop signal generated by the streamline control device when monitoring an abnormality in the pipeline of the station where it is located. The alarm digital IO signal can be understood as the alarm synchronization signal sent by other streamline control equipment after an abnormality occurs in the assembly line when monitoring the station where it is located.

S320: Enable monitoring when the pipeline is running.

S330. Determine whether a stop digital IO signal or an alarm digital IO signal of other streamline control devices is scanned; based on the determination result that no stop digital IO signal or alarm digital IO signal of other streamline control devices is scanned, perform step 340; Based on scanning to at least one of the stop digital IO signal and the alarm digital IO signal, step 350 is performed.

S340. Normally run the current streamline control device to control the pipeline.

S350: Suspend the control of the pipeline by the current pipeline control device.

S360: Send alarm synchronization signals to the unpaused flow line control equipment in the front station and the back station.

S370, the flow line control equipment in the front station and the back station that receives the alarm synchronization signal suspends the control of the assembly line.

S380. The flow line control of the front station and the back station determines whether the flow line control equipment of all assembly lines has received the alarm synchronization signal. Based on the judgment result that the flow line control equipment of all assembly lines has not received the alarm synchronization signal, return to step S360; based on The streamline control equipment of all assembly lines receives the judgment results of the alarm synchronization signal and executes step S390.

For example, the flow line control of the front station determines whether the previous station has received the alarm synchronization signal and suspended work. Based on the judgment result of the flow line control equipment of the front station that the previous station has not received the alarm synchronization signal and suspended work, determine The reception of alarm synchronization signals by all streamline control equipment has not been completed; the streamline control of the rear station determines whether the next station has received the alarm synchronization signal and suspends work, and the streamline control equipment of the rear station determines that the next station has not received it. The judgment result of receiving the alarm synchronization signal and suspending the work confirms that the reception of the alarm synchronization signal by all streamline control equipment has not been completed.

S390. Stop the control of this synchronization pause.

Referring to Figure 2, an embodiment of the present application also provides a multi-stage pipeline synchronization control system, including:

There are multiple pipeline control devices 100, each pipeline control device 100 corresponds to a section of the pipeline, and the connection method between the multiple pipeline control devices includes connecting them end to end according to the working order of the corresponding pipeline; each pipeline control device 100 is in the pipeline During the operation, it is used to monitor the working status of the station in real time, and perform digital IO interaction through the connected streamline control equipment to obtain the working status of the previous station and/or the next station;

If the working status of one of the stations is abnormal and it becomes an alarm triggering station, the streamline control equipment of the alarm triggering station is also used to control the assembly line of the stopped station, and is based on the connection relationship between multiple streamline control devices in sequence. , sending alarm synchronization information to other pipeline control devices to control all pipelines to suspend their work.

For example, referring to Figures 4 and 5, a multi-section assembly line includes a loading station 1, at least one workstation (such as a first workstation 2 and a second workstation 3), and an unloading station 4; according to the working sequence of the corresponding assembly line, the loading station The flow line control device 110 of 1, the flow line control device of the workstation (such as the flow line control device 120 of the first workstation 2 and the flow line control device 130 of the second workstation 3) and the flow line control device 140 of the unloading station 4 are sequentially connected; and the flow line control device 140 of the unloading station 4 is also connected to the flow line control device 110 of the loading station 1. The unloading station 3 is the previous station of the loading station 4, and the carrier of the unloading station 4 can return In the loading station 1, a closed-loop interactive control is formed.

For example, the connection ports for each streamline control device include:

A first alarm signal terminal and a second alarm signal terminal, the first alarm signal terminal is used to obtain an alarm signal sent by the flow line control equipment of the previous station and/or to send an alarm signal to the flow line control equipment of the previous station;

The second alarm signal terminal is used to obtain the alarm signal sent by the flow line control equipment of the next station and/or send an alarm signal to the flow line control equipment of the next station;

The first alarm signal terminal and the second alarm signal terminal are both SMEMA digital IO interfaces.

For example, each streamline control device can also be equipped with a SMEMA digital IO interface with other functions, such as a SMEMA digital IO interface for receiving the front station feeding signal, a SMEMA digital IO interface for receiving the front station processing success signal, and a SMEMA digital IO interface for receiving the front station processing success signal. The SMEMA digital IO interface is used to receive the processing failure signal of the previous station, the SMEMA digital IO interface is used to detect the material request signal of this station, the SMEMA digital IO interface is used to detect the feeding signal of this station, and the SMEMA digital IO interface is used to detect the successful processing signal of this station. SMEMA digital IO interface, SMEMA digital IO interface used to detect the processing failure signal of this station, SMEMA digital IO interface used to detect the preparation completion signal of this station, SMEMA digital IO interface used to detect the material request signal of the next station, used to detect The next station is ready to complete the SMEMA digital IO interface of the signal, etc.

An embodiment of the present application provides a synchronous control system for a multi-section pipeline, including: multiple pipeline control devices, each pipeline control device corresponding to a section of the pipeline. The connection method between multiple streamline control devices includes connecting them end to end according to the working order of the corresponding assembly line; multiple streamline control devices are used for real-time monitoring to add alarm and stop digital IO scanning and bind front and rear station equipment status, when the status changes, stop the current device and notify the front and rear station equipment through the interface that the equipment of the current station is abnormal. The streamline actions of the front and rear stations will be paused immediately. After waiting for the abnormality to recover, the current station will return to normal mode and the front and rear stations will resume the current state from the pause. action. Through this interactive logic, all streamlines can be stopped synchronously when one piece of equipment is abnormal. When the abnormality is restored, the equipment at the front and rear stations can continue to operate. This achieves simple and stable simultaneous entry and exit control of the assembly line and improves the efficiency of vehicles entering and exiting the assembly line. Improve equipment performance, reduce the difficulty of exception handling, and reduce labor maintenance costs.

Claims

A synchronous control method for a multi-section pipeline. Each pipeline section is provided with a pipeline control device. The connection method between the multiple pipeline control devices includes starting and ending in sequence according to the working order of the multi-section pipelines respectively corresponding to the multiple pipeline control devices. connected; the method includes:

Each flow line control device monitors the working status of the assembly line in real time during the assembly line operation, and performs digital input and output IO interaction in real time through the flow line control device connected to each flow line control device to obtain the previous section of the assembly line and the next section of the assembly line. The working status of at least one of the

In response to determining that the working status of one section of the assembly line is abnormal, it becomes an alarm triggering station. The assembly line controlled by the streamline control equipment of the alarm triggering station stops working, and the alarm is triggered according to the sequential connection relationship between multiple streamline control devices. The streamline control equipment of the assembly line outside the alarm triggering station sends alarm synchronization information to control all assembly lines to stop working.
The method according to claim 1, wherein the multi-section assembly line includes a loading station, at least one workstation and an unloading station; according to the working sequence of the multi-section assembly line, the flow line control equipment of the loading station, the flow line control equipment of the at least one workstation The flow line control equipment and the flow line control equipment of the unloading station are connected in sequence;

In response to determining that the alarm triggering station is a workstation, sending alarm synchronization information to the streamline control equipment of the assembly line other than the alarm triggering station includes:

The streamline control equipment of the alarm triggering station simultaneously sends the alarm synchronization information to the streamline control equipment of the upper section of the assembly line and the next section of the assembly line to control the streamline control equipment on both sides of the alarm triggering station to continue to their respective upper sections in sequence. The streamline control device of one section of the assembly line or the next section of the assembly line sends the alarm synchronization information until the loading station and the unloading station respectively receive the alarm synchronization information.
The method of claim 2, wherein

In response to determining that the alarm triggering station is the loading station, sending alarm synchronization information to the streamline control equipment of the assembly line other than the alarm triggering station includes:

The streamline control device of the alarm trigger station sends the alarm synchronization information to the streamline control device of the first workstation to control the streamline control devices of the assembly lines other than the alarm trigger station to continue the work sequence along the assembly line. direction, and sequentially sends the alarm synchronization information to the streamline control equipment of the respective next section of the assembly line until the blanking station receives the alarm synchronization information.
The method of claim 2, wherein

In response to determining that the alarm triggering station is the unloading station, sending alarm synchronization information to the streamline control equipment of the assembly line other than the alarm triggering station includes:

The streamline control device of the alarm triggering station sends the alarm synchronization information to the streamline control device of the last workstation to control the streamline control device of the assembly line other than the alarm triggering station to continue the work sequence along the assembly line. In the opposite direction, the alarm synchronization information is sent to the streamline control equipment of the respective previous section of the assembly line in sequence until the loading station receives the alarm synchronization information.
The method according to claim 1, wherein the multi-section assembly line includes a loading station, at least one workstation and an unloading station; according to the working sequence of the multi-section assembly line, the flow line control equipment of the loading station, the flow line control equipment of the at least one workstation The streamline control equipment and the streamline control equipment of the unloading station are connected in sequence; and the streamline control equipment of the unloading station is also connected with the streamline control equipment of the loading station, and the unloading station is The previous section of the assembly line of the loading station;

The sending of alarm synchronization information to the streamline control equipment of the assembly line other than the alarm triggering station includes:

The streamline control equipment of the alarm triggering station sends the alarm synchronization information to the streamline control equipment of the upper section of the assembly line and the next section of the assembly line to control the streamline control on both sides of the alarm triggering station to continue to the respective previous section of the assembly line. Or the streamline control device of the next section of the assembly line sends the alarm synchronization information, until the two streamline control devices that finally receive the alarm synchronization information are two connected streamline control devices.
The method according to claim 1, wherein each of the flow line control devices monitors the working status of the assembly line in real time during the flow operation process, including:

The flow line control equipment monitors whether it is abnormal in real time during the assembly line operation, and monitors whether the corresponding assembly line equipment is abnormal; in response to determining at least one of each of the assembly line control equipment and the corresponding assembly line equipment An abnormality occurs, and it is determined that the working state of the assembly line where each streamline control device is located is an abnormal state; in response to determining that each streamline control device and the corresponding assembly line device are respectively normal, it is determined that each streamline The working status of the assembly line where the control equipment is located is normal.
The method according to claim 1, wherein the connection port of each streamline control device includes at least one of a first alarm signal terminal and a second signal terminal; the first alarm signal terminal is configured to perform at least one of the following: One operation: obtain the flow line control equipment of the previous section of the pipeline and send an alarm signal and send an alarm signal to the pipeline control equipment of the previous section of the pipeline; the second alarm signal terminal is set to perform at least one of the following operations: obtain the next section of the pipeline The streamline control equipment sends alarm signals and sends alarm signals to the streamline control equipment of the next section of the assembly line;

The pipeline control device connected through each pipeline control device performs digital IO interaction in real time to obtain the working status of at least one of the previous section of the pipeline and the subsequent section of the pipeline, including:

Scan the first digital IO signal of the first alarm signal terminal in real time to determine whether the first digital IO signal is a bound alarm IO signal, based on the determination result that the first digital IO signal is a bound alarm IO signal. , determine that an abnormality occurred in the previous section of the pipeline;

Scan the second digital IO signal of the second alarm signal terminal in real time to determine whether the second digital IO signal is a bound alarm IO signal, based on the determination result that the second digital IO signal is a bound alarm IO signal. , determine that an abnormality occurs in the next section of the pipeline.
The method of claim 1, further comprising:

In response to determining that the alarm trigger station returns to normal and becomes a recovery trigger station, the streamline control device of the recovery trigger station controls the normal operation of the assembly line where the recovery trigger station is located, and based on the connection relationship between multiple streamline control devices connected end to end in sequence, to The pipeline control device of the pipeline outside the recovery triggering station sends recovery synchronization information to control the recovery work of all pipelines.
A multi-stage pipeline synchronous control system, including:

A plurality of streamline control devices, each streamline control device corresponding to a section of the pipeline, and the connection method between the plurality of pipeline control devices includes connecting them end to end according to the working order of the multiple sections of the pipeline respectively corresponding to the multiple streamline control devices;

Among them, each streamline control device is set to: monitor the working status of the assembly line in real time during the pipeline operation process, and perform digital input and output IO interaction in real time through the streamline control device connected to each streamline control device to obtain the previous segment The working status of at least one of the assembly line and the subsequent assembly line; each streamline control device is also set to: in response to determining that the working status of the assembly line where each streamline control device is located is abnormal and becomes an alarm triggering station, each streamline control device Control the assembly line where it is located to stop working, and send alarm synchronization information to the assembly line control equipment of the assembly line except the alarm triggering station according to the connection relationship between the multiple assembly line control devices in order to control the stop of all assembly lines. Work.
The system of claim 9, wherein the connection port of each streamline control device includes at least one of a first alarm signal terminal and a second alarm signal terminal;

Wherein, the first alarm signal terminal is configured to perform at least one of the following operations: obtain and send an alarm signal to the streamline control equipment of the previous section of the pipeline and send an alarm signal to the pipeline control equipment of the previous section of the pipeline;

The second alarm signal terminal is configured to perform at least one of the following operations: obtain and send an alarm signal to the streamline control equipment of the next section of the pipeline and send an alarm signal to the pipeline control equipment of the next section of the pipeline;

The first alarm signal terminal and the second alarm signal terminal are respectively SMEMA digital IO interfaces of the Surface Assembly Equipment Manufacturers Association.