Passive impact sensor for high velocity projectiles
US10228225B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2016 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | May 27, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P15/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A passive impact sensor for a projectile configured to explode, destroy with kinetic energy, embed or pass through an object with a closing velocity greater than 1,000 m/s. The passive impact sensor includes an energy generating system comprised of a crystalline structure that stores latent polarized electrical energy. The crystalline structure is responsive to an impact generated shock wave that propagates at least partially through the crystalline structure to consume and depolarize the crystalline structure and release at least a portion of the stored energy to generate a voltage pulse across output terminals. An onboard antenna is configured to transmit an RF pulse responsive to the voltage pulse (direct or integrated) external to the impact sensor (and projectile) before the sensor is destroyed by the shock wave. Multiple energy generating systems can be positioned either together or fore and aft and their voltage pulses summed to transmit the RF pulse. The benefits of this device include the ability to determine impact force, impact velocity, impact angle, target mass, target density, and direct or glancing impact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.