Apparatus for detecting a critical fall
AssigneeHilti Aktiengesellschaft
InventorsVarnim Goyal, Bernd Ziegler
Life of this patent
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Abstract
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.
Claims8
An apparatus for detecting a critical fall containing control electronics, the apparatus comprising:
- at least one voltage measuring device;
- at least one inertial body held by three electrical conductors along three principal inertial axes of the inertial body, a voltage being applied to each of the three electrical conductors, the three electrical conductors being configured such that when a predetermined acceleration threshold value for the inertial body is reached a conductivity of at least one electrical conductor is impaired such that reaching of a predetermined voltage threshold value for at least one voltage is detectable by the voltage measuring device.
A rechargeable battery comprising:
- an apparatus for detecting a critical fall containing control electronics, the apparatus having at least one voltage measuring device;
- a controller having a discharging device;
- and
- at least one energy storage device;
- the apparatus including at least one inertial body held by three electrical conductors along three principal inertial axes of the inertial body, wherein a voltage is applied to each of the three electrical conductors and the three electrical conductors are configured such that when a predetermined acceleration threshold value for the inertial body is reached a conductivity of at least one electrical conductor is impaired such that reaching of a predetermined voltage threshold value for at least one voltage is detectable by the voltage measuring device.
A method for detecting a critical fall, the method comprising the following steps:
- detecting a first, second and third voltage applied to a first, second and third electrical conductor, respectively, the first conductor running along a first principal inertial axis of an inertial body, the second conductor running along a second principal inertial axis of the inertial body and the third conductor running along a third principal inertial axis of the inertial body;
- and
- detecting a predetermined threshold value for the first, second or third voltage by at least one voltage measuring device if, when a predetermined acceleration threshold value for the inertial body is reached, a conductivity of at least one electrical conductor is impaired.
Dependencies are inferred from the claim text.