Railroad crossing safety device

Abstract

This system is a special device known as the hybrid sound detector (HSD) composed of electronic components attached to two separate printed circuit boards mounted in a hand held plastic box that can be installed in any motor vehicle, train, car and airplanes near the operator. The first part of the HSD schematic board is a sound level meter that measure the sound level in noise range 110 to 114 decibel. The sound circuit board of the HSD schematic board is a driver circuit with low-level signal. A small red light and mini buzzer are visible and connected to the two electronic circuit boards.

1 . Is an electronic safety device constructed to notify operators of a possible head on collision with other motor vehicles in mid-air, waterways or highways. The device dimensions are 3″×6″×2″ and could be powered by both secondary and primary power supply. The hybrid sound detector  FIG. 1  of section AA-BB main function is to measure sound level hosed in a range of 500 feet.  
   
   
       2 . BB of  FIG. 1 , hybrid sound detector electronic schematic design driver circuit is driven by external low-level signal.  FIG. 1 , Section AA and BB total output of driver circuits activates # 1  light and # 2  mini buzzer with piezo threshold between 110 to 114 decibels sound level. The total output of the driver circuit activates # 1  light and a mini buzzer # 2  notifying the operator visually and by audio sound before a collision takes place.  
   
   
       3 . This device  FIG. 1  combines Section AA and BB to activate safety device compensate for poor visibility and lack of early sound detection. The deaf and visually impaired individuals will benefit from the hybrid sound detector. 
 Claims:  1 . Railroad Crossing for automobiles 
   2 . Early warning for the deaf and visually impaired  
   3 . Prevent air collisions