Abstract: The present disclosure relates to methods and devices for investigating and characterizing a fragment or debris field caused by an explosion, and in particular, explosions resulting from the detonation of a cased munition. Aspects of the disclosure provide methods and devices which can be used to determine and correlate properties such as size/mass, location and velocity of fragments resulting from such a detonation.

Abstract: A hyper-velocity impact sensor is configured to probe a mass of material consumed upon impact with an object. The probe can extract density and thickness characteristics of the impacted object, which can be used to classify the object.

Abstract: A method for monitoring the function of a sensor module including sensor which generates a measurement signal for a physical quantity to be determined and applies the measurement signal to an output terminal in an unchanged form or in processed form. In addition, a test signal is generated whose spectrum lies outside the spectrum of the measurement signal. The test signal is supplied at a place in the sensor from which it reaches the output terminal in unchanged form or in processed form only in the case of a functional sensor. An output signal present at the output terminal is compared with the test signal and a diagnosis signal is generated, which indicates whether the test signal is present at the output terminal. The test signal is filtered out of the output signal and the remaining signal is applied as the measurement signal at an output of the sensor module.

Abstract: A control system for use in safety critical human/machine control interfaces is described, more particularly a joystick type control system and particularly a joystick type control system utilizing magnetic positional sensing. The control system provides a control input device having a movable magnet, a pole-piece frame arrangement positioned about the magnet, at least three magnetic flux sensors being positioned in said pole-piece frame arrangement and a monitoring arrangement for monitoring the output signal of each of said at least three sensors.

Abstract: A modular test plug for voltage, current and saturation testing has a housing having a handle portion, a plurality of jaw connections for injecting upstream toward the equipment to be tested, a plurality of blade connections for injecting downstream toward a transformer, a first plurality of binding posts on a top of the housing connected to the jaw connections, and a second plurality of binding posts also on a top of the housing connected to the blade connections. Also provided is a short-defeating insert for defeating a shorting mechanism in an FT switch. This insert has a thin flat extension member extending from the body to prevent a bottom cam on a shorting blade from making contact with a shorting spring that would otherwise short the circuit when the switch handle is moved from the open position to the closed position.

Abstract: An angular position sensor and method that relies on a stationary circular array of Hall sensors and a rotatable circular array of magnets arranged about a common axis. A periodic and simultaneous reading of all of the Hall sensor outputs is used to determine angular velocity.

Abstract: A display unit, attached to a bar forming a handlebar, frame or stem of a bicycle with a securing tool, comprises a body having a display part capable of realizing a first display state displaying first data (traveling speed, for example) and a second state displaying second data (traveling distance, for example). The first and second display states are switched by pressing down body from above.

Abstract: A shaft revolution counter including one or more reed magnetic sensors interacting with one or more magnets attached to the shaft. The interaction generates voltage spikes in the reed magnetic sensors that are used as input signal to an electronic non-volatile counter, as well as its sole power source.

Abstract: A device for measuring a person's quickness comprising a stopwatch, a measured length of cord, and a pair of tags. Each of the tags has a clip at one end for securing the tag to the clothing of a person whose quickness is to be measured. One tag is connected to one end of the cord by a Velcro type separable fastener, the other tag is connected by a Velcro type separable fastener to a pull strap which actuates the stopwatch to start and stop the stopwatch upon successive pulls of the pull strap. The other end of the cord is also connected to the pull strap. When the stopwatch is held at a starting position and the person being tested leaves the starting position, the tag connected to the pull strap actuates the stopwatch to turn it on and then separates from the pull strap. When the person has run a predetermined distance equal to the length of the cord, the cord pulls the pull strap to stop the stopwatch and then is separated from the tag attaching the cord to the person's clothing.

Abstract: An electromechanical pulse generator includes a toothed disk driven by a rotating shaft to operate two pairs of contacts to generate one pulse output and one direction-of-rotation output. The pulse contacts and the direction-of-rotation contacts operate independently of each other. The toothed disk is rotatable and axially displaceable. The axial displacement is dependent on the direction of rotation via an inclined plane in the form of a screw thread which is rotatable by the rotary shaft. By axial displacement of the toothed disk, the direction of rotation of the shaft is detected, and by rotation of the toothed disk, the pulses are generated.