Abstract: A locomotion platform is composed of a platform main body, a waist holding device, a signal fetching circuit, and a monitoring system. The platform main body consists of a platform structure body, a perforated platform face plate, position sensors, and balls located over the position sensors. The waist holding device consists of a waist ring for catching the waist of a user, and a fastening member for fastening the waist holding device with the platform structure body. The signal fetching circuit is intended to fetch the signals generated by the position sensors. The monitoring system is intended to receive the output signals of the signal fetching circuit and is provided with a software for computing the displacement generated by the strolling of the user on the platform main body. The results of computation are exhibited on a monitor.

Abstract: An advance warning device for monitoring the working conditions of a hydraulic braking system of a motor vehicle is composed of a plurality of sensors and a controller in communication with the sensors for processing the signals transmitted by the sensors so as to provide the operator of the motor vehicle with an advance warning signal as to likelihood of the brake failure. The sensors are intended to monitor respectively the temperature of the brake lining piece, the temperature of the brake fluid kept in the distribution pump, the water content of the brake fluid of the hydraulic braking system, and the hydraulic pressure of the hydraulic braking system.

Abstract: An industrial safety helmet comprises a shell of a semioval shape, a crad and a chin strap. The shell has one or more flexures capable of strengthening the shell and of promoting air circulation of the shell. The flexures are provided respectively at the front end thereof with an air inlet while at least one of the flexures is provided at the rear end thereof with an air outlet. The cradle has an energy-absorbing mechanism. The chin strap is provided with a detachable adhesive buckling mechanism.