How can I set up time breakpoints to collect information from AGVs?

Question

question

Liam Chiu asked Feb 26 2024 at 7:05 AM Felix Möhlmann commented Feb 28 2024 at 4:56 PM

How can I set up time breakpoints to collect information from AGVs?

Hi,

In my model setup, there are two distinct areas, and I am wondering if it is possible to configure data collection every five minutes and write it into a global table.

I aim to record the current timestamp, the area number, the quantity of AGVs in that specific area, and the number of completed tasks in that area every five minutes. Could you guide me on how to configure this?

Thank you very much for your assistance.

agvv.fsm

Software Version:

FlexSim 22.2.0

agv globaltable agv paths

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agvv.fsm (146.5 KiB)

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Answer 1 · 2024-02-26T07:54:16Z

Felix Möhlmann answered Feb 26 2024 at 7:54 AM Felix Möhlmann commented Feb 28 2024 at 4:56 PM

First, track the current values of the statistics you want to collector somewhere in the model.

The number of AGVs per area could be global variables that get incremented/decremented when an AGV passes certain control points ("On Pre-Arrival" trigger).

Similarly, the number of completed tasks could be global variables as well or (as long as there is only one per area) a label on the queues to which the items are unloaded.

Then use timer events in a Statistics Collector to record (and in the case of completed tasks also reset) the values every 5 minutes.

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Liam Chiu commented · Feb 27 2024 at 8:38 AM

Hi @Felix Möhlmann
I am currently using a process flow where the AGV performs numerical addition and subtraction when passing through ControlPoint16 and ControlPoint17(red). This is done to determine the quantity of AGVs in area2 at that moment. However, it doesn't seem to be working as expected. Could you please help me take a look? Thank you for your assistance.

agv_v2.fsm

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agv-v2.fsm (153.8 KiB)

Felix Möhlmann Liam Chiu commented · Feb 27 2024 at 9:34 AM

You need to use the Pre-Arrival event. The Arrival only fires if the AGV comes to a stop at the CP, not when it passes over it.

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Liam Chiu commented · Feb 28 2024 at 4:12 PM

Hi @Felix Möhlmann

I also have another question. When I use a statistical collector, it updates the data every 30 seconds. However, when exporting the data, it only records the data from the last update. How can I collect data from each update? Thank you for your help.

agv_v3.fsm

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agv-v3.fsm (198.3 KiB)

Felix Möhlmann Liam Chiu commented · Feb 28 2024 at 4:56 PM

A calculated table is not useful here. It filters/aggregates/sorts data from other tables and doesn't collect information itself.

You need to setup a Statistics Collector that periodically stores the values of the global table.

You can check out the tutorial if you haven't already done so.

https://docs.flexsim.com/en/22.2/Tutorials/AdditionalTools/Tutorial2StatsCollector/StatsCollectorOverview/StatsCollectorOverview.html

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