Abstract: A fencing node (2) for a safety fencing system (1) defining a fencing area, including; a distance measurement device (5) for measuring distances between at least two other adjacent said fencing nodes to thereby determine the fencing area, an object detection device for detecting one or more objects located within and/or around the fencing area, and a microprocessor system (7) for processing data from the distance measurement devices and the object detection devices of a plurality of said fencing nodes, the microprocessor system determining a shape and dimensions of the fencing area based on the data received from the distance measurement devices, and a relative location of the or each detected object within and/or around the fencing area on data received from the object detection devices, wherein the object detection device is an object detection transceiver (3) for sending radio signals through the fencing area, and for measuring radio signals reflected from the or each detected object to thereby determine a

Abstract: A collision prevention system for lifting machinery including, at least one measurement transceiver (9, 39, 41, 45) mountable on or adjacent the lifting machinery, the measurement transceiver being adapted to transmit a radio signal through an operational area surrounding the lifting machinery, and for measuring reflected radio signals returning from the operational area, the reflected radio signals identifying a position of one or more objects located within the operational area to thereby determine whether or not the detected object(s) within the operational area is within a critical position(s) relative to the lifting machinery.

Abstract: A 3-dimensional (3D) precast locating system for identifying and tracking 3D location, that includes ground elevation and geographical location, of a precast, is provided. The system comprises an RFID tag embedded within the precast, a precast lifting machinery having a hook for lifting the precast, wherein a 3D location of the lifting machinery is predetermined as a reference, and an RFID reader attached to the lifting machinery for identifying the precast by operationally reading the RFID tag of the lifted precast. The system further comprises a sensor assembly for detecting an instant 3D location of the hook with reference to the predetermined 3D location of the lifting machinery and a position translational controller for deriving an instant 3D location of the lifted precast based on the 3D location of the hook detected by the sensor assembly, with reference to the predetermined 3D location of the lifting machinery.

Abstract: A 3-dimensional (3D) precast locating system for identifying and tracking 3D location, that includes ground elevation and geographical location, of a precast, is provided. The system comprises an RFID tag embedded within the precast, a precast lifting machinery having a hook for lifting the precast, wherein a 3D location of the lifting machinery is predetermined as a reference, and an RFID reader attached to the lifting machinery for identifying the precast by operationally reading the RFID tag of the lifted precast. The system further comprises a sensor assembly for detecting an instant 3D location of the hook with reference to the predetermined 3D location of the lifting machinery and a position translational controller for deriving an instant 3D location of the lifted precast based on the 3D location of the hook detected by the sensor assembly, with reference to the predetermined 3D location of the lifting machinery.