Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Proximity warning system with silent zones










Image Number 4 for United States Patent #8446277.

Various proximity detection zones for work sites that require personnel to be in close proximity to various hazardous elements, such as machines, mobile equipment, remotely controlled machines, and operated vehicles can be shaped to fit specific equipment or work area configurations and may include one or more silent zones within the proximity warning zone in which an alarm is not sounded. The zones are determined by overlapping magnetic fields that expand and collapse at a selected operating frequency. Devices sense and measure the strength of the magnetic fields in which they are located and use the information to determine if they are in a silent or warning zone. Thus, it is possible to produce silent zones having desired shapes.








 
 
  Recently Added Patents
Method and arrangement for controlling semiconductor component
Radio communication device and sequence length adjusting method
Use of a high-oleic and high-tocol diet in combination with a non-tocol antioxidant for improving animal meat quality
Progressively discovering and integrating services
Variable speed traffic control system
Spatially pre-processed target-to-jammer ratio weighted filter and method thereof
Fuel cell module
  Randomly Featured Patents
Pinch valve syringe
Hinge assemblies for door lids and methods of their delivery
Apparatus and method for forming three-dimensional object
Transgenic plants expressing ACC oxidase genes
Heat generation
Modulation scheme for tedons
Method of and apparatus for making an adhesive-coated roll
Current tuned Mach-Zehnder optical attenuator
Support element
Multi digital subscriber line access multiplexor system