Proximity detection system and method and collision avoidance system and method using proximity detection
First Claim
Patent Images
1. A system, comprising:
- a vehicle;
a first field generator that generates a first magnetic field;
a second field generator that generates a second magnetic field; and
an alarm device that sends response signals, the alarm device being configured to determine a strength of the first and the second magnetic fields, respectively, and to generate an alarm if the strength of the first magnetic field is above a first predetermined threshold and the strength of the second magnetic field is not above a second predetermined threshold.
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Abstract
The invention relates to a complex proximity safety and warning system. The invention provides a safety system comprising a generator that generates a magnetic field that establishes a boundary, where the generator is capable of receiving radio frequency signals. Also provided is a radio frequency device that sends radio frequency signals, the radio frequency device being capable of sensing the magnetic field and generating a radio frequency response.
44 Citations
21 Claims
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1. A system, comprising:
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a vehicle; a first field generator that generates a first magnetic field; a second field generator that generates a second magnetic field; and an alarm device that sends response signals, the alarm device being configured to determine a strength of the first and the second magnetic fields, respectively, and to generate an alarm if the strength of the first magnetic field is above a first predetermined threshold and the strength of the second magnetic field is not above a second predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system, comprising:
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a vehicle; a first field generator that generates a first magnetic field; a second field generator that generates a second magnetic field; and an alarm device configured to detect an identity of the respective first and second magnetic fields based on a coding of the first and second magnetic fields. - View Dependent Claims (21)
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Specification