Electronic distance measurement device

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes an electronic distance measurement device that uses at least two radar signals at different frequencies to measure the distance to a reflecting surface. By comparing the phase differences between emitted and reflected radar signals at two frequencies, the device determines the exact distance, overcoming typical ambiguities and errors that restrict traditional radar measurement. The innovation allows for highly accurate and unambiguous distance measurements over a much wider range than previously possible.

Use CasesContent extracted from patent full text and abstract with AI.

• Industrial automation for precise positioning and movement detection of machinery or parts
• Contactless monitoring of vital signs in medical applications, such as heart rate or respiration measurement
• Consumer electronics like gesture recognition or motion tracking in gaming or smart home devices
• High-precision manufacturing, where exact measurement of distances is required
• Robotics for environment sensing and navigation
• Automotive safety systems, such as obstacle detection
• Security and surveillance for motion and presence detection

BenefitsContent extracted from patent full text and abstract with AI.

• Enables highly accurate distance measurement with sub-wavelength resolution
• Overcomes ambiguity and range limitations of traditional radar systems by using multi-frequency phase analysis
• Supports both relative and absolute distance measurement over multiple wavelengths
• Provides robust operation, less susceptible to noise and errors from digital quantization or component non-linearity
• System can be implemented with low complexity and technical effort
• Allows for faster and simultaneous measurements at different frequencies, increasing overall measurement speed
• Flexible architecture: can use single or multiple signal sources and supports various radar waveform types (CW, FMCW, SFCW, pulsed)

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The detector (100) has a transmission apparatus (101) for emitting radar signals at frequencies in a direction of a reflecting surface (103). A receiver (107) receives radar signal portions of the radar signals reflected at the reflecting surface and determines phase differences between the emitted radar signals and the radar signal portions reflected at the reflecting surface. A determination device determines distance between the detector and the reflecting surface based on the phase differences. The receiver comprises correlators (107-1) for determination of the differences. An independent claim is also included for a method for detection of distance by an electronic distance detector.