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A safety device for a fuze of a projectile that includes a detonating device for detonating the fuze. The safety device has a safety unit with a processor for safeguarding a detonation process of the detonating device. The safety unit contains a sensor unit configured to output a disengagement signa

A safety device for a fuze of a projectile that includes a detonating device for detonating the fuze. The safety device has a safety unit with a processor for safeguarding a detonation process of the detonating device. The safety unit contains a sensor unit configured to output a disengagement signal at a predetermined acceleration state. The processor is set up to output a control signal to release the safety unit in accordance with the presence of the disengagement signal. A low-acceleration state of the flight of the projectile can thus be detected and used as release parameter.

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1. A safety device for a fuze of a projectile having a firing device for firing the fuze, the safety device comprising: a safety unit having a processor configured for setting a safety for a firing process of the firing device;a sensor unit configured to output an enable signal when an acceleration

1. A safety device for a fuze of a projectile having a firing device for firing the fuze, the safety device comprising: a safety unit having a processor configured for setting a safety for a firing process of the firing device;a sensor unit configured to output an enable signal when an acceleration state is registered that lies below the earth's acceleration due to gravity, said sensor unit being configured to measure three directional accelerations in three mutually orthogonal spatial directions, and wherein the enable signal is output at a time at which each of the three directional accelerations lies below the earth's acceleration due to gravity, at least by a respectively defined acceleration value;said processor being connected to receive the enable signal and configured to output a control signal arming said safety unit in dependence on a presence of the enable signal. 2. The safety device according to claim 1, wherein the defined acceleration value is different in a direction of flight of the projectile than the defined acceleration value in the two other directions. 3. The safety device according to claim 1, wherein the defined acceleration state is below the earth's acceleration due to gravity by at least one defined acceleration value, and the sensor unit comprises at least one comparator by way of which the acceleration value can be adjusted. 4. The safety device according to claim 1, which comprises a timing element for presetting a time interval, and wherein said processor outputs the control signal only when the enable signal has been present without interruption throughout the entire time interval. 5. The safety device according to claim 1, wherein said sensor unit includes a roll sensor configured to identify rolling of the projectile and to output a roll signal when a rolling movement is present. 6. The safety device according to claim 5, wherein said processor is configured to check for a presence of both the enable signal and the roll signal, and to output the control signal to arm the safety unit if at least one of the enable or roll signals is present. 7. The safety device according to claim 5, wherein said processor is configured to check, when the roll signal is present, whether a magnitude of the acceleration of the projectile in the axial direction lies below a predetermined value, and to output the control signal for arming only when the value has been undershot. 8. The safety device according to claim 5, wherein said roll sensor is an acceleration sensor. 9. The safety device according to claim 5, wherein said processor is configured to distinguish between free-flight rolling of the projectile and rolling of the projectile on a base. 10. The safety device according to claim 1, wherein said sensor unit includes a ground rolling sensor configured to identify ground rolling of the projectile on a base, and to output a ground rolling signal when ground rolling is detected. 11. The safety device according to claim 10, wherein said processor is configured to suppress an output of the control signal for arming when the ground rolling signal is present. 12. The safety device according to claim 1, wherein: said sensor unit is configured to measure three directional accelerations in three mutually orthogonal spatial directions, and the enable signal is output at a time at which each of the three directional accelerations lies below the earth's acceleration due to gravity, in each case at least by a defined acceleration value, and said sensor unit further includes: a roll sensor configured to identify rolling of the projectile and to output a roll signal when a rolling movement is present; anda ground rolling sensor configured to identify ground rolling of the projectile on a base and to output a ground rolling signal during ground rolling;said processor is configured to carry out the following process steps: checking both the enable signal and the roll signal for a presence thereof and, if at least one of the two signals is present, outputting the control signal for arming the safety unit; butwhen the roll signal is present, to additionally check whether a magnitude of the acceleration of the projectile in the axial direction lies below a predetermined value, and to output the control signal for arming only when the value is undershot; anddistinguishing between free-flight rolling of the projectile and ground rolling of the projectile on the ground, and to suppress an output of the control signal for arming when the ground rolling signal is present. 13. The safety device according to claim 1, wherein the firing device has a firing chain with a firing charge for firing the fuze, and said safety unit includes an interruption means for interrupting the firing chain. 14. A method for arming a fuze of a projectile having a firing device for firing the fuze and a safety device with a safety unit which contains a processor for making a firing process of the firing device safe, the method which comprises: measuring three directional accelerations in three mutually orthogonal spatial directions with a sensor unit;outputting with the sensor unit, an enable signal when a defined acceleration state occurs that lies below the earth's acceleration due to gravity at a time at which each of the three directional accelerations lies below the earth's acceleration due to gravity, at least by a respectively defined acceleration value; andreceiving the enable signal with the processor and outputting a control signal for arming the safety unit in dependence on a presence of the enable signal.