Patent Description:
In a painting workshop in the automobile industry, in order to prolong the service life of skids and to ensure that the production line is not shut down due to paint accumulation and adhesion, skids with serious paint accumulation and adhesion need to be cleaned offline. At present, manual inspection is mainly used to determine whether a skid needs to be taken offline, and the skid will be taken offline manually. However, long-term in the painting and spraying sites is detrimental to the health of people, resulting in high labor costs, and any omissions in the inspection may lead to incomplete cleaning and eventually cause losses by shutdown of the production line.

Therefore, there is a need to develop an automatic skid offline-cleaning guidance and control system and method.

It is an object of the present application to provide an automatic skid offline-cleaning guidance and control system and method for automatically monitoring paint fouling on skids and automatically guiding and controlling a skid that has reached the criterion for cleaning to be taken offline.

According to the present disclosure, an automatic skid offline-cleaning guidance and control system includes a PLC control module, a skid position tracking and paint fouling condition monitoring subsystem, a skid offline control subsystem, a skid detection subsystem, and a human-computer interaction interface, the PLC control module being connected to the skid position tracking and paint fouling condition monitoring subsystem, the skid offline control subsystem, the skid detection subsystem, and the human-computer interaction interface; wherein.

Optionally, the skid position tracking and paint fouling condition monitoring subsystem includes a skid paint fouling detection and position monitoring module, a skid information data storage module, and a communication module, the skid paint fouling detection and position monitoring module being connected to the skid information data storage module and the communication module; wherein.

Optionally, the skid offline control subsystem includes an input/output module, a first enabling control module, a first action control module, a skid offline control frequency converter, a skid offline control motor, a second enabling control module, a second action control module, a skid rotation control frequency converter, and a skid rotation control motor; the skid rotation control frequency converter being connected to the skid rotation control motor, the second enabling control module and the second action control module; the skid offline control frequency converter being connected to the skid offline control motor, the first enabling control module and the first action control module; the first enabling control module, the first action control module, the second enabling control module and the second action control module being connected to the input/output module, and the input/output module being connected to the PLC control module; wherein.

Optionally, the skid detection subsystem includes a skid path selection in-place detection switch, a skid offline in-place detection switch, a skid passing-point count detection module, an offline in-place skid information detection module, a skid information writing module, a skid rotation in-place detection switch, and a remote input/output module; the remote input/output module being connected to the skid path selection in-place detection switch, the skid offline in-place detection switch, the skid passing-point count detection module, the offline in-place skid information detection module, the skid information writing module, the skid rotation in-place detection switch and the PLC control module; wherein.

Optionally, the communication module is an Ethernet communication module.

Optionally, each of the first enabling control module, the first action control module, the second enabling control module and the second action control module is a relay.

Optionally, each of the skid passing-point count detection module, the offline in-position skid information detection module and the skid information writing module is an RFID module.

In a second aspect of the present disclosure, an automatic skid offline-cleaning guidance and control method, using the automatic skid offline-cleaning guidance and control system according to the present disclosure, includes the following steps of:.

Optionally, the step S1 specifically includes:.

Optionally, the step S2 specifically includes:.

The present disclosure has the following advantages. The disclosed system and method is capable of automatically monitoring paint fouling on skids, and automatically guiding and controlling a skid that has reached the criterion for cleaning to be taken offline. Besides, the costs reduced, and manual inspection can be eliminated.

In the <FIG>) skid offline control subsystem; <NUM>) skid position tracking and paint fouling condition monitoring subsystem; <NUM>) a PLC control module; <NUM>) human-computer interaction interface; and <NUM>) skid detection subsystem.

In this embodiment, as shown in <FIG>, an automatic skid offline-cleaning guidance and control system includes a PLC control module <NUM>, a skid position tracking and paint fouling condition monitoring subsystem <NUM>, a skid offline control subsystem <NUM>, a skid detection subsystem <NUM>, and a human-computer interaction interface <NUM>, the PLC control module <NUM> being connected to the skid position tracking and paint fouling condition monitoring subsystem <NUM>, the skid offline control subsystem <NUM>, the skid detection subsystem <NUM>, and the human-computer interaction interface <NUM>. The PLC control module <NUM> is configured to read a serial number of a skid and identify a position of the skid. The skid position tracking and paint fouling condition monitoring subsystem <NUM> is configured to acquire the serial number of the skid and information about the position of the skid from the PLC control module <NUM>, detect a paint fouling condition of the skid, and send a skid cleaning request to the PLC control module <NUM> when determining that the skid needs to be cleaned. The PLC control module <NUM> sends a skid cleaning instruction to the skid offline control subsystem <NUM> based on the skid cleaning request, and the skid offline control subsystem <NUM> performs an offline operation on the skid based on the skid cleaning instruction. The human-computer interaction interface <NUM> is configured to display hardware status of the whole guidance and control system, information about the paint fouling condition of the skid, and information about the position of the skid.

As shown in <FIG>, in this embodiment, the skid position tracking and paint fouling condition monitoring subsystem <NUM> includes a skid paint fouling detection and position monitoring module, a skid information data storage module, and a communication module, the skid paint fouling detection and position monitoring module being connected to the skid information data storage module and the communication module. The skid paint fouling detection and position monitoring module is configured to acquire the serial number of the skid and information about the position of the skid from the PLC control module <NUM> to monitor a paint fouling condition of the skid and detect paint fouling on the skid, and send a skid cleaning request instruction to the PLC control module <NUM>. The skid information data storage module is configured to record the information about the position of the skid and a state of the skid, the state of the skid including an offline state and an online state; The communication module is configured to communicate the information about the position of the skid, information about the state of the skid, and a cleaning request label.

As shown in <FIG>, in this embodiment, the skid offline control subsystem <NUM> includes an input/output module, a first enabling control module, a first action control module, a skid offline control frequency converter, a skid offline control motor, a second enabling control module, a second action control module, a skid rotation control frequency converter, and a skid rotation control motor; the skid rotation control frequency converter being connected to the skid rotation control motor, the second enabling control module and the second action control module; the skid offline control frequency converter being connected to the skid offline control motor, the first enabling control module and the first action control module; the first enabling control module, the first action control module, the second enabling control module and the second action control module being connected to the input/output module, and the input/output module being connected to the PLC control module <NUM>. The skid rotation control frequency converter is configured to control the skid rotation control motor to perform a rotation action upon reception of a rotation control instruction sent by the PLC control module <NUM> through the second enabling control module and the second action control module. The skid offline control frequency converter is configured to control the skid offline control motor to perform an offline action upon reception of an offline control instruction sent by the PLC control module <NUM> through the first enabling control module and the first action control module. The input-output module is configured for in-cabinet IO signal communication.

As shown in <FIG>, in this embodiment, the skid detection subsystem includes a skid path selection in-position detection switch, a skid offline in-position detection switch, a skid passing-point count detection module, an offline in-position skid information detection module, a skid information writing module, a skid rotation in-position detection switch, and a remote input/output module; the remote input/output module being connected to the skid path selection in-position detection switch, the skid offline in-position detection switch, the skid passing-point count detection module, the offline in-position skid information detection module, the skid information writing module, the skid rotation in-position detection switch and the PLC control module <NUM>. The offline in-position skid information detection module is configured to detect the position of the skid, and acquire the serial number of the skid and information about the cleaning request. The skid path selection in-position detection switch, the skid rotation in-position detection switch and the skid offline in-position detection switch are configured to detect the position of the skid. The skid passing-point count detection module is configured to detect the position of the skid and write a cleaning request flag. The skid information writing module is configured to change the cleaning request flag. The remote input/output module is configured for distributed IO signal communication.

The system is capable of automatically monitoring paint fouling on skids, and automatically guiding and controlling a skid that has reached the criterion for cleaning to be taken offline.

In this embodiment, the communication module is an Ethernet communication module.

In this embodiment, each of the first enabling control module, the first action control module, the second enabling control module and the second action control module is a relay.

In this embodiment, each of the skid passing-point count detection module, the offline in-position skid information detection module and the skid information writing module is an RFID module.

In this embodiment, an automatic skid offline-cleaning guidance and control method, using the automatic skid offline-cleaning guidance and control system according to the embodiments of the present disclosure, includes the following steps of:.

As shown in <FIG>, in this embodiment, the step S1 specifically includes:.

As shown in <FIG>, in this embodiment, the step S2 specifically includes:.

The method is capable of automatically monitoring paint fouling on skids, and automatically guiding and controlling a skid that has reached the criterion for cleaning to be taken offline.

Claim 1:
An automatic skid offline-cleaning guidance and control system, comprising: a PLC control module (<NUM>), a skid position tracking and paint fouling condition monitoring subsystem (<NUM>), a skid offline control subsystem (<NUM>), a skid detection subsystem (<NUM>), and a human-computer interaction interface (<NUM>), the PLC control module (<NUM>) being connected to the skid position tracking and paint fouling condition monitoring subsystem (<NUM>), the skid offline control subsystem (<NUM>), the skid detection subsystem (<NUM>), and the human-computer interaction interface (<NUM>); characterized in that
the PLC control module (<NUM>) is configured to read a serial number of a skid and identify a position of the skid;
the skid position tracking and paint fouling condition monitoring subsystem (<NUM>) is configured to acquire the serial number of the skid and information about the position of the skid from the PLC control module (<NUM>), detect a paint fouling condition of the skid, and send a skid cleaning request to the PLC control module (<NUM>) when determining that the skid needs to be cleaned;
the PLC control module (<NUM>) sends a skid cleaning instruction to the skid offline control subsystem (<NUM>) based on the skid cleaning request, and the skid offline control subsystem (<NUM>) performs an offline operation on the skid based on the skid cleaning instruction;
the human-computer interaction interface (<NUM>) is configured to display hardware status of the whole guidance and control system, information about the paint fouling condition of the skid, and information about the position of the skid.