Independent personal underwater navigation system for scuba divers

• US 20070006472A1
• Filed: 05/16/2006
• Published: 01/11/2007
• Est. Priority Date: 05/16/2005
• Status: Abandoned Application

• Current Assignee: Scuba Nav Corporation
• Original Assignee: Scuba Nav Corporation
• Inventors: Bauch, Aaron
• Application Number:
  US11/435,300
• Publication Number:
  US 20070006472A1
• Time in Patent Office: Days
• US Class Current: 33/355.R
• CPC Class Codes: G01C 17/00 Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes using gyroscopic effect G01C19/00
• CPC Class Codes: G01C 21/1654 with electromagnetic compass

Abstract

An underwater personal Inertial Navigation System (INS) that uses linear acceleration and angular velocity sensors to fix the position of a diver in relation to a reference point. The sensor inputs are corrected by other sensors such as pressure or magnetic sensors.

Claims

1. A personal hand portable underwater navigation device comprising:

a set of linear acceleration sensors for determining linear acceleration of a user of the device in a three dimensional (x, y, z) coordinate space;

a set of angular velocity sensors, for measuring rotation in (x,y,x) spave of the user of the device;

a digital signal processor for

reading sample values from the linear acceleration sensors and the angular velocity sensors and converting the information to a velocity and position estimate; and

.

comparing the velocity and/or position estimate to a corresponding predicated value determined by measurements from an environmental sensor or sensors.