Abstract: The disclosed systems and methods allow the weight and relative position of an object on a weighing surface to be simultaneously determined using a circuit that does not require pre-programmed tables and that can be used in an analog or digital environment. One example system includes first, second, third, and fourth load cells having respective first, second, third, and fourth strain gauges. The strain gauges are configured to measure strain at the load cells caused by the object on the weighing surface. The system also includes circuitry configured to simultaneously determine weight and position of the object on the weighing surface, and a display that reports the weight of the object, a longitudinal position of the object, and a lateral position of the object.

Abstract: The disclosed systems and methods allow the weight and relative position of an object on a weighing surface to be simultaneously determined using a circuit that does not require pre-programed tables and that can be used in an analog or digital environment. One example system includes first, second, third, and fourth load cells having respective first, second, third, and fourth strain gauges. The strain gauges are configured to measure strain at the load cells caused by the object on the weighing surface. The system also includes circuitry configured to simultaneously determine weight and position of the object on the weighing surface, and a display that reports the weight of the object, a longitudinal position of the object, and a lateral position of the object.

Abstract: A plurality of electrostatic field proximity sensors are mounted upon a crane boom. The sensors are capacitive elements and include an antenna. The sensors are electrically connected in parallel with a single wire. A summing amplifier is coupled to the sensors for detecting changes in flux fields, which changes could signal a dangerous condition. The sensors can comprise an electrically insulating body having first and second ends with a conductive member attached to one of the ends. A mounting means is provided at the other one of the ends. A resistor can be electrically connected between the ends to discharge excess static charge and to allow detection of missing sensors.