WeedSeeker

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The Controller

WeedSeeker Controller

One Controller or Controller Logic (CL) panel will operate up to sixteen (16) WeedSeeker sensors (with eight units on each of two control cables). Additional Controller Logic panels are used in larger systems.

A remote switch, (e.g., Lift Switch on a Row Crop Sprayer), connected to the five foot long, two conductor cable assemble, will remotely activate the Standby Mode.

The Controller should be placed in a convenient location near the operator, but not so that it interferes with safe vehicle operation.

To properly spray a weed, the time delay before the Valve Cartridge opens and the duration that it stays open must match the vehicle's speed. Since the system does not use a speed sensing device, the Speed Switch selects a range of speeds to control the timing. The system has an operating range to 10 miles per hour. When properly set, the spray will turn on slightly before the weed and stay on until slightly after the weed.

Optical calibration of the system occurs when the Soil Base Switch is released. Whatever reflectance signal is being detected by each WeedSeeker Unit at that instant becomes that unit's new Soil Base value. As the sprayer travels through the field, each WeedSeeker Unit compares the current reflectance signal to the Soil Base value it has stored in memory. The Soil Base value represents a certain amount of chlorophyll. An object must have a chlorophyll reflectance signal greater then what is in a unit's memory in order to be sprayed. If the Soil Base was set while a WeedSeeker Unit was over a weed, smaller weeds will not be sprayed; only weeds larger than the initial weed will be sprayed.










Row Crops

Vineyard and Orchard

Military

Roadside

Railroad

Irrigation Districts

Industrial










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