Detección de sonido impulsivo para baja tensión

The intial design of the detectors determined that the circuit was powered by two AA batteries connected in series, and was composed of a microphone (along with the necessary elements for it's adequate performance), coupled to the non-inverting input of the 393 comparator through a capacitor, which, after receiving the stimulus, activates de monostable multibvirator. The design was improved with the addition of further stages, a stage that amplifies the signal coming from the microphone, and another stage that maintains the supply voltage. Morover, the thresholds that describe the sensibility of the detectors were fixed to values within the range where the comparator works. The revised detectors lack the need to be calibrated constantly, are swift to activate the monostable multivibrator after the acoustic stimulus is received, and their response is consistent among them, i.e., given the same stimulus, the detectors will react with a delay within the two detections that corresponds to the expected time that the sound takes to travel bewteen each microphones.

• Autores: Baza, Camilo
• Fecha de publicación: 2019
• Institución: Universidad del Norte
• Repositorio: Repositorio Uninorte
• Idioma: spa
• OAI Identifier: oai:manglar.uninorte.edu.co:10584/8504
• Acceso en línea: http://hdl.handle.net/10584/8504
• Palabra clave: sonido; detección; impulso; tensión; sound; impulsive; detection
• License: Universidad del Norte