overwatch how it works

OverWatch - User - How it works

Principle of Operation
The OverWatch™ is an innovative system designed as an aid to the operator.
The system does not replace operator training. The system works on the premise of detecting the operator’s position and movements, with respect to the scissor lift’s direction of movement in real time. This information is used to determine if a crushing or shearing event is about to occur. This is determined by the physical movements and position of the operator’s body, with respect to the platform control box.

When the operator pushes the dead-man trigger, the system calibrates the position of the operator relative to the control box. The system senses the machine’s mode of operation (Drive or Elevate) and determines the position of the joystick. This initial calibration is done each time the dead-man trigger is pushed; therefore, the system calibrates for each use session with the specific operator and environmental conditions at that point in time. The system constantly measures the operator’s position, acceleration and velocity. The system will trigger and cut the machine operation if the system detects movements above the threshold limits. For example, if the machine is driving forward and the operator moves forward to look over the front of the platform, the system will not trigger. If the machine is driving backwards and the operator moves towards the platform controls quickly with a high acceleration, this may indicate a dangerous shearing event, and therefore, the system will trigger.

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