초록 ▼

The portable roadway perimeter alarm has an impact sensor which may be a shock or pressure sensor that is connected to a transmitter. The impact sensor and transmitter unit is located around the perimeter of a roadway work area to detect vehicles penetrating the perimeter into the designated work ar

The portable roadway perimeter alarm has an impact sensor which may be a shock or pressure sensor that is connected to a transmitter. The impact sensor and transmitter unit is located around the perimeter of a roadway work area to detect vehicles penetrating the perimeter into the designated work area which vehicles may represent a hazard to work crews. The vehicle penetration event is transmitted to a warning receiver and alarm unit which may be placed in a pocket of a worker's vest or may be mounted on a work vehicle to sound an area alarm. The impact sensor and transmitter units are durable and operate in adverse environmental conditions.

대표청구항 ▼

[ I claim:] [1.]1. An apparatus for detecting a vehicle penetrating a perimeter of a roadway work area and providing a warning to workers in the work area comprising:an impact sensor and transmitter unit having an electromechanical shock sensor electrically connected to a transmitter;the impact sens

[ I claim:] [1.]1. An apparatus for detecting a vehicle penetrating a perimeter of a roadway work area and providing a warning to workers in the work area comprising:an impact sensor and transmitter unit having an electromechanical shock sensor electrically connected to a transmitter;the impact sensor and transmitter unit having a means for communication with a warning receiver and alarm unit;the impact sensor and transmitter unit mounted in a top of a safety cone; anda means for providing electrical energy to the impact sensor and transmitter unit.