- Wed Nov 17, 2010 1:32 am
#113694
A project I've been considering as of late is a sort of interactive target (archery, shooting, darts, etc) that can triangulate the point of impact of the projectile in question. I was hoping to accomplish this using a PIC MCU (18F2550's are what I currently have on hand) and relatively inexpensive sensors. From the research I've done so far, I was thinking of using 4 accelerometers, vibration sensors, or microphones situated in the corners of the "target". Using the MCU, I would save a timer value for the instants at which each sensor experiences the acceleration/vibration/sound of the impact, calculate the phase delays between the sensors, then use these calculated values in some sort of algorithm to triangulate the POI on the target.
However, I've been having difficulty deciding on what type of sensors would work best for this application. Microphones are inexpensive, but there would be the issue of ambient noise, as well as other interference (such as the muzzle report and/or sonic crack of a gunshot). Because of this, I was leaning towards accelerometers or vibration sensors, but you all are much more knowledgable and experienced than I.
As for the software/math side of things,beyond finding the phase delays between the sensors, I'm somewhat lost on how I would go about triangulating the POI. Unfortunately, while my research has provided me with some theory behind what I hope to accomplish, I have found very little actual applications to which I can reference. Because of this, any direction that someone could provide would be extremely beneficial.
Thanks in advance for any advice or guidance!
However, I've been having difficulty deciding on what type of sensors would work best for this application. Microphones are inexpensive, but there would be the issue of ambient noise, as well as other interference (such as the muzzle report and/or sonic crack of a gunshot). Because of this, I was leaning towards accelerometers or vibration sensors, but you all are much more knowledgable and experienced than I.
As for the software/math side of things,beyond finding the phase delays between the sensors, I'm somewhat lost on how I would go about triangulating the POI. Unfortunately, while my research has provided me with some theory behind what I hope to accomplish, I have found very little actual applications to which I can reference. Because of this, any direction that someone could provide would be extremely beneficial.
Thanks in advance for any advice or guidance!