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.

A light-up speed sensing shoe apparatus for tracking speed and motivating runners includes a shoe body, an outsole coupled to the shoe body, and an insole coupled to the outsole within the shoe body. An impact sensor is coupled within the outsole. The impact sensor detects a speed at which a wearer is running. A microprocessor is coupled within the outsole. The microprocessor is in operational communication with the impact sensor. A battery is coupled within the outsole and is in operational communication with the microprocessor. A plurality of lights is coupled to the outsole and is in operational communication with the microprocessor.

A light-up speed sensing shoe apparatus for tracking speed and motivating runners includes a shoe body, an outsole coupled to the shoe body, and an insole coupled to the outsole within the shoe body. An impact sensor is coupled within the outsole. The impact sensor detects a speed at which a wearer is running. A microprocessor is coupled within the outsole. The microprocessor is in operational communication with the impact sensor. A battery is coupled within the outsole and is in operational communication with the microprocessor. A plurality of lights is coupled to the outsole and is in operational communication with the microprocessor.

Provided is an analysis apparatus including an acquisition unit that acquires vibration data showing a vibration generated in a first object by having a second object come into contact with a first position on the first object, a first analysis processing unit that specifies the first position by comparing a vibration characteristic shown by the vibration data, and a vibration characteristic defined for each position where the second object may come into contact with the first object, and a second analysis processing unit that estimates a velocity after the contact of the second object based on a velocity of the first object and the first position.

Provided is an analysis apparatus including an acquisition unit that acquires vibration data showing a vibration generated in a first object by having a second object come into contact with a first position on the first object, a first analysis processing unit that specifies the first position by comparing a vibration characteristic shown by the vibration data, and a vibration characteristic defined for each position where the second object may come into contact with the first object, and a second analysis processing unit that estimates a velocity after the contact of the second object based on a velocity of the first object and the first position.

A system for sensing impacts may include a first sensing system configured for placement on a user and to sense inertial motion and establish a first sensor result, a second sensing system configured to sense inertial motion and establish a second sensor result, and a processor for comparing the first sensor result to the second sensor result to assess whether the first and second sensor results are indicative of a same impact.

A system for sensing impacts may include a first sensing system configured for placement on a user and to sense inertial motion and establish a first sensor result, a second sensing system configured to sense inertial motion and establish a second sensor result, and a processor for comparing the first sensor result to the second sensor result to assess whether the first and second sensor results are indicative of a same impact.

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.

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.

Provided is an analysis apparatus including an acquisition unit that acquires vibration data showing a vibration generated in a first object by having a second object come into contact with a first position on the first object, a first analysis processing unit that specifies the first position by comparing a vibration characteristic shown by the vibration data, and a vibration characteristic defined for each position where the second object may come into contact with the first object, and a second analysis processing unit that estimates a velocity after the contact of the second object based on a velocity of the first object and the first position.