摘要:
A workability evaluating apparatus comprises a myoelectric potential detecting unit, a signal processing unit, an arithmetic operation unit, and an output unit. The myoelectric potential detecting unit detects time-series fluctuations in myoelectric potentials of at least one pair of muscles, which show antagonistic activities while operating equipment among muscles of an operator used to operate the equipment, as myoelectric potential signals. The signal processing unit processes the detected myoelectric potentials. The arithmetic operation unit calculates time-series data of a first correlation coefficient in a specified sampling time between signals obtained by processing the myoelectric potential signals from the pair of antagonistic muscles, and performs evaluation of workability in operating the equipment by using the calculated time-series data. The output unit outputs a result of the performed evaluation.
摘要:
A tire/wheel assembly body enables reduction of road noise while reducing unsprung mass using a light-metal wheel. The tire/wheel assembly body is formed by installing a pneumatic tire on the light-metal wheel with a rigidity index (α) of 35 to 65 (1/rad). In the pneumatic tire, reinforcement layers are arranged at end portions of a belt layer.
摘要:
A plurality of electrode pairs, each of which is constituted by two electrodes of the plurality of biomedical electrodes are set and at least one of an electrical impedance value between two electrodes forming a pair and a resistance value between the two electrodes, for each of the electrode pairs is measured. An attachment state of each of the electrode pairs is judged by comparing the impedance value or the resistance value, with a predetermined range of numeric values. An electrode in an inappropriate attachment state is identified from the plurality of electrode pairs based on the judged attachment state o each of the plurality of electrode pairs.
摘要:
During a driving activity of an automobile, a work characteristic evaluating apparatus is provided for judging a factor (a physical work load or a mental load) of stress that a work activity places on the worker to evaluate a work characteristic. The work characteristic evaluating apparatus 1 comprises a masseter muscle myoelectric potential acqusition device 10 which measures and acquires myoelectric potential of a masseter muscle which moves independently of the driving activity of the driver, a work intensity acquisition device 20 which measures and acquires steering torque around the steering shaft as a work intensity of steering activity, a correlation calculating module 38 which computes a correlation between time-series data of the myoelectric potential of the masseter muscle and time-series data of the steering torque, and a judgment module 39 which judges whether the stress placed on the worker is caused by a physical work load or a mental load based on the correlation coefficient.
摘要:
This invention provides a tire warning device which detects tensile forces of at least one of reinforcing cords of a carcass ply or belt ply of a pneumatic tire and provides a warning on the basis of the tensile forces detected. The tire warning device includes a strain sensor to be attached to the at least one reinforcing cord for sensing a strain of the at least one reinforcing cord, transmitting means for transmitting a signal sensed by the strain sensor, receiving means for receiving a sensed signal from the transmitting means, processing means that calculates the tensile forces of the at least one reinforcing cord on the basis of the sensed signal input from the receiving means and determines whether the warning is provided or not on the basis of the calculated tensile forces, and warning means for providing the warning based on the determination of the processing means.
摘要:
The present inventions are a run-flat tire and a tire/wheel assembly in which the workability of the tire-to-rim fit has been improved while including a core-type run-flat support member. The tire/wheel assembly is formed by fitting a pneumatic tire into a wheel rim. In the tire/wheel assembly, the run-flat support member constituted of a circular shell and elastic rings is inserted into a cavity of the pneumatic tire, in which the circular shell has a support surface thereof extended toward the periphery of the tire and leg portions along each end of the support surface, and the elastic rings are attached to the leg portions of the circular shell. Meanwhile, stages extending in a tire circumferential direction are formed on the inner walls of a pair of right and left beads in the pneumatic tire, and the elastic rings are locked into the stages.
摘要:
A tire/wheel assembly includes a wheel having a rim, a pneumatic tire fitted to the rim of the wheel and a run-flat support member, the pneumatic tire having a tread surface and a hollow space, the tread surface having circumferential grooves extending in a circumferential direction of the tire, the run-flat support member being disposed in the hollow space of the pneumatic tire and having an annular shell and elastic rings, the annular shell comprising a support surface formed radially outward having a convexly curved surface portion with an annular apical line or face and two leg portions formed radially inward, the elastic rings supporting the two leg portions on the rim. The apical line or apical face of the convexly curved surface portion is offset in a direction of a center axis of rotation of the wheel so as not to be located in a position corresponding to the circumferential grooves when viewed from a radial direction of the wheel.
摘要:
A work comfort evaluating device is a device for evaluating a level of comfort of work by measuring myoelectric potentials of plural muscles when the work is done by antagonistic activities of the muscles. The device has a pair of detecting sensors, an amplifier, a signal processing part, a work-load intensity calculating part, and an evaluation part. The sensors sense myoelectric potentials of the muscles at a time of the work. The signal processing part calculates a synchronous contraction intensity of the muscles by using myoelectric potential waveforms. The work-load intensity calculating part calculates a level of a work load intensity in the work. The evaluation part evaluates a level of comfort of the work by normalizing the synchronous contraction intensity by the level of the work load intensity calculated.
摘要:
A steering operation force detection device for a steering wheel including a steering wheel rim having a right-side rim section and a left-side rim section. The device includes load cells that detect six component forces of the steering operation force acting on the right-side rim section and the left-side rim section consisting of forces in three axial directions and moments about three axes. The device includes a steering angle detection sensor that detects a steering angle of the steering wheel, and an inertial force component correcting unit that derives an inertial force component acting on the right-side rim section and the left-side rim section due to rotation of the steering wheel, based on an amount of displacement of the steering angle detected by the steering angle detection sensor, and that corrects the component force detected by the load cells to eliminate an effect of the derived inertial force component.
摘要:
The selecting method and apparatus for selecting a specific skeletal muscle affected by a psychological state of a person from skeletal muscles of the person apply at least a first stimulus to the person to bring the person into an uncomfortable state, acquire muscle activity information of each of the skeletal muscles when the first stimulus is applied to the person and select the specific skeletal muscle based on the muscle activity information of each of the skeletal muscles by the first stimulus. The stress evaluating method and system acquire the muscle activity information of the person during an operation for the selected specific skeletal muscle selected by the selecting method and apparatus, and evaluate a degree of stress placed on the person during the operation based on the acquired muscle activity information.