CAM-161

Weeds have taken over the yard

The same substation, nobody inside, with tall weeds everywhere: between the transformer and the disconnectors, against the fence and all over the gravel. You can barely make out the walkway any more. This did not happen today: it has been growing for weeks, a little each day, and nobody has seen it because nobody has come.

CAM-161 · SWITCHYARD · VEGETATION OVERGROWN

What IRIS understands

What it recognises in this scene

yard taken over by weeds
power transformer
disconnectors
control house
perimeter fence

What this camera measures

An alert says something is happening. The reading says how much.

5 semanasGrowing for
3+2Points where vegetation touches equipment
1 / 3Walkways still usable
2Walking routes blocked
0People in the compound
10:05Time of the reading

The figures on this screen are an example from the illustration, not any client's measurement.

The rule

You decide once. IRIS applies it always.

vegetation covers the gravel of the yard or reaches the equipment, and keeps growing week after week

Then

alert the maintenance lead with today's picture and the one from a month ago
point out where the vegetation is already touching equipment
log the rate, so the clearing can be scheduled before it becomes urgent

The instruction that set it up«Tell me when the vegetation starts taking over the yard, without waiting for the inspection: compare it with what was there a month ago.»

What changes

What changes for whoever answers for the site

This is the only one of the eight that does not report an event: it reports a state. Weeds do not happen, they grow. Nobody wakes up one day to a substation overrun; it looks like this because for weeks nobody has been. And when it is found, it is found at the inspection, with vegetation touching the equipment and an urgent clearing job that costs considerably more than a planned one. A camera that looks at the same yard every day does see the difference between today and a month ago, which is exactly what a human eye passing twice a year cannot. Here IRIS interrupts nobody: it puts something on the maintenance calendar that today arrives as a surprise.

What people usually ask

How does IRIS know the weeds have grown?

By comparing the same picture with itself. The camera always looks at the same yard from the same place, so the area that is green today and was gravel a month ago stands out on its own. There is no need to measure heights or estimate anything: it is enough to look at the same scene over time, which is exactly what a person who visits twice a year cannot do.

Isn't a clearing contract enough to sort this out?

The contract says how often the clearing happens; it does not say what happened in between. One year it rains in April and by June you cannot see the equipment; another year the gravel holds out until September. What the camera does is replace a fixed calendar with what is actually happening in that yard, and raise a flag when vegetation reaches the equipment even if the clearing was scheduled for two months' time.

What if somebody appears in shot doing the clearing?

IRIS does not identify anyone: it does not recognise faces, it does not read number plates, it does not compare against any database and it does not store who anyone is. If somebody is working there, what it sees is that there is a person in the compound, and nothing else. And the next day what it looks at is the ground, not the person.

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