Abstract: A measurement system for measuring hand tools includes a number of instrumented tools and a data collector. The data collector has a processor which can operate in a task analysis mode in which data is received, stored, and processed over a user-determined period of time. A number of different tools with different adaptor configurations can be coupled to a receptacle on the housing of the data collector. The collector has recognition circuitry for determining which type of tool is plugged into the receptacle, and, in response, the processor retrieves parameters needed to process the data and which are related to the recognized tool. The instrumented tools are designed to simulate actual tools used in the work place, and thus have substantially the same size, shape, weight, weight distribution, and feel of actual working models of the tools.

Abstract: An apparatus for testing a muscle of a patient who is fitted with a myoelectric prosthetic device. The apparatus has an array of electrodes for testing the muscle over a wide area during a short period of time. The electric signals from the contraction are amplified, filtered, and converted to a digital signal. The digital signals are sent to a computer which causes a display to show one or more of the signals. A prosthetist uses the results to determine how to place the electrode in the device.

Abstract: An apparatus for testing a muscle of a patient who is fitted with a myoelectric prosthetic device. The apparatus has an array of electrodes for testing the muscle over a wide area during a short period of time. The electric signals from the contraction are amplified, filtered, and converted to a digital signal. The digital signals are sent to a computer which causes a display to show one or more of the signals. A prosthetist uses the results to determine how to place the electrode in the device.

Abstract: A portable hearing protection device evaluation apparatus which can be taken into the field to measure noise attenuation of a muff type hearing protection device under actual working conditions is provided. The apparatus includes two miniature microphones, one positioned inside a muff near the ear, the other positioned outside the muff to detect the noise in the environment. These two microphones simultaneously receive input signals which are provided to circuitry which determines and displays a single number output representing the noise attenuation.

Abstract: A pneumatic or hydraulic pressure sensor is connected in parallel with the vehicle braking system and the sensor is connected to a computer system which periodically samples the sensor output. Other sensors can be used to detect other quantities such as engine speed, vehicle speed, wheel rotation or transmission speed, and other brake units and their outputs can also be periodically sampled. Under control of the computer, the samples are stored on a magnetic disk. The computer can then be instructed to interrogate the samples stored on the disk to produce charts of various quantities versus time which objectively indicate driver performance. The device can also be used to synchronize individual brake units in a multiple brake vehicle by simultaneously displaying the brake pressures in each brake unit, thereby enabling the relative application timing of the brake units to be measured.