An apparatus contains an inertial body held by three electrical conductors along the three principal inertial axes, wherein a voltage is applied to each of the three electrical conductors and are configured such that when a predetermined acceleration threshold value for the inertial body is reached the conductivity of at least one electrical conductor is impaired such that the reaching of a predetermined threshold value is detectable by the voltage measuring device. A rechargeable battery having an apparatus for detecting a critical fall and a method involving detecting three voltages are also provided.

An electronic device that enables identification of application of an impact is provided. The electronic device includes a module case including a first structure and a second structure having different deformation quantities, a first impact identification part formed between the first structure and the second structure and configured to generate a deformation according to the difference between the deformation quantities of the first and second structures at the time of applying the impact, and a second impact identification part that enables identification of whether the impact was applied based on the deformation of the first impact identification part.

An electronic device that enables identification of application of an impact is provided. The electronic device includes a module case including a first structure and a second structure having different deformation quantities, a first impact identification part formed between the first structure and the second structure and configured to generate a deformation according to the difference between the deformation quantities of the first and second structures at the time of applying the impact, and a second impact identification part that enables identification of whether the impact was applied based on the deformation of the first impact identification part.

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.

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.

Impact indicators which include an impact registering structure are provided for a package. The impact registering structure registers a location and an elapsed time of an impact of excessive force on the package. The structure includes a first region, a second region, and a barrier film. The first region contains a first element, and the second region contains a second element. The first and second elements are selected to register the location and the elapsed time of the impact when coming in contact. The barrier film separates the first and second regions, and is calibrated to rupture with a specified impact force. Once ruptured, the first element and the second element contact, in part, to provide a location indication of the rupture in the barrier film and a time elapsed indication indicative of the elapsed time from the rupture in the barrier film.

Impact indicators which include an impact registering structure are provided for a package. The impact registering structure registers a location and an elapsed time of an impact of excessive force on the package. The structure includes a first region, a second region, and a barrier film. The first region contains a first element, and the second region contains a second element. The first and second elements are selected to register the location and the elapsed time of the impact when coming in contact. The barrier film separates the first and second regions, and is calibrated to rupture with a specified impact force. Once ruptured, the first element and the second element contact, in part, to provide a location indication of the rupture in the barrier film and a time elapsed indication indicative of the elapsed time from the rupture in the barrier film.

An impact sensor has a hollow container with a spring extending therethrough. A liquid is present in the cavity. The spring biases opposing valve balls to a closed position, preventing dye that is located exterior of the cavity from entering the cavity. When a force applied to the sensor exceeds a first predetermined value, the spring is compressed or displaced, allowing at least one of the valve balls to move from the closed position to an open position, thereby allowing the dye at the moving valve ball to pass into the cavity, mixing with the liquid and providing a visual indication of the exceeded force upon the sensor.

An impact sensor has a hollow container with a spring extending therethrough. A liquid is present in the cavity. The spring biases opposing valve balls to a closed position, preventing dye that is located exterior of the cavity from entering the cavity. When a force applied to the sensor exceeds a first predetermined value, the spring is compressed or displaced, allowing at least one of the valve balls to move from the closed position to an open position, thereby allowing the dye at the moving valve ball to pass into the cavity, mixing with the liquid and providing a visual indication of the exceeded force upon the sensor.

An impact sensor has a hollow container with a spring extending therethrough. A liquid is present in the cavity. The spring biases opposing valve balls to a closed position, preventing dye that is located exterior of the cavity from entering the cavity. When a force applied to the sensor exceeds a first predetermined value, the spring is compressed or displaced, allowing at least one of the valve balls to move from the closed position to an open position, thereby allowing the dye at the moving valve ball to pass into the cavity, mixing with the liquid and providing a visual indication of the exceeded force upon the sensor.