초록 ▼

An emergency vehicle detection system is provided including a first microphone mounted to a front end of a vehicle for receiving audio signals and a second microphone mounted to a rear end of the vehicle also for receiving audio signals. A pair of wires are provided having a first end connected to a

An emergency vehicle detection system is provided including a first microphone mounted to a front end of a vehicle for receiving audio signals and a second microphone mounted to a rear end of the vehicle also for receiving audio signals. A pair of wires are provided having a first end connected to an associated one of the microphones. An indicator light is positioned on a dash of the vehicle for illuminating upon the actuation thereof. A high pass filter resides in communication with the wires for abating frequencies of the audio signals that reside below a predetermined amount. Finally, a level detector is connected between the high pass filter and the indicator light. In use, the level detector is adapted to actuate the indicator light upon the detection of an audio signal with a magnitude greater than a predetermined level.

대표청구항 ▼

[ What is claimed as being new and desired to be protected by Letters Patent of the United States is as follows:] [1.] A new and improved emergency vehicle detection system comprising, in combination:a vehicle;a first microphone mounted to a front end of the vehicle for receiving audio signals;a sec

[ What is claimed as being new and desired to be protected by Letters Patent of the United States is as follows:] [1.] A new and improved emergency vehicle detection system comprising, in combination:a vehicle;a first microphone mounted to a front end of the vehicle for receiving audio signals;a second microphone mounted to a rear end of the vehicle for receiving audio signals;means for securing the first and second microphones to the vehicle, the means including a U-shaped bracket having ends with outwardly extending tabs, said tabs each having a bore therethrough for receiving a coupling screw for securement to the vehicle;a pair of insulated wires each having a conductive sheath formed thereon along an entire length thereof, the conductive sheath being grounded for preventing noise from interfering with signals being transmitted along the wire, the wires each having a first end connected to an associated one of the microphones;an indicator light positioned on a dash of the vehicle for illuminating upon the actuation thereof;a control unit situated within a housing mounted within the vehicle, the control unit including:automatic gain control means connected to second ends of the wires for receiving and amplifying the audio signals;a high pass filter connected to the automatic gain control means for abating frequencies of the audio signals that reside below a predetermined amount; anda level detector connected between the high pass filter and the indicator means, the level detector adapted to actuate the indicator means upon the detection of an audio signal with a magnitude greater than a predetermined level,the predetermined being selectably governable by a user by way of a potentiometer.