X1 Human Interface Detection System (HIDS)

This innovation is a sensor technology that can detect pressures, such as ground force reactions, down to 30 g in weight with a minimum resolution of 5 × 5 mm (resolution dictated by the limitations of the resistor grid array). This device uses a commercially available resistor grid array and custom sensing hardware and software. The sensor hardware encompasses an area no greater than 2-3/8 × 2-3/8 in. (≈6 × 6 cm) and, combined with the software, can process more than 900 pressure points at a minimum rate of 72 scans/second (each scan = 900 sensors). The custom hardware and software is, by design, adaptable to all operating systems, as well as custom data protocols and data transfers. In addition to determining relative pressures and center of pressure measurements, the device also uses a sensing system to detect weight (force) within 2% accuracy using a strategic load cell topology. This pressure system, in combination with a force detection system, is called X1 HIDS.