In my earlier post titled “Designing a Sensor Helmet” I defined the groups that the helmet is comprised of.\u00a0\u00a0\u00a0Since the main purpose of the helmet was to detect telemetry, this post I will go into more details on the sensor group.<\/p>\n
The electronic sensors supplied fall into to types, analog (A) and digital (D).\u00a0 This will determine how the micro controller will read them.\u00a0 The sensors that will be incorporated into the helmet fall into 4 use categories, these are:<\/p>\n
There were 3 significant factors in deciding which sensors to use.\u00a0 The choices were made based on low power consumption, size, and cost.\u00a0 Here is a table listing the sensors based on costs.<\/p>\n
Sensor<\/strong><\/td>\n| Retail Cost<\/strong><\/td>\n<\/tr>\n | CO2 Sensor<\/td>\n | $56.00<\/td>\n<\/tr>\n | GPS Receiver<\/td>\n | $39.95<\/td>\n<\/tr>\n | Tilt-Compass<\/td>\n | $29.95<\/td>\n<\/tr>\n | Pulse Sensor<\/td>\n | $24.95<\/td>\n<\/tr>\n | Dust Sensor<\/td>\n | $11.95<\/td>\n<\/tr>\n | Humidity-Temp<\/td>\n | $9.95<\/td>\n<\/tr>\n | Barometer<\/td>\n | $9.95<\/td>\n<\/tr>\n | Sound MEMS<\/td>\n | $9.95<\/td>\n<\/tr>\n | Carbon Mono<\/td>\n | $7.25<\/td>\n<\/tr>\n | Methane CNG<\/td>\n | $4.95<\/td>\n<\/tr>\n | Ambient Light<\/td>\n | $4.95<\/td>\n<\/tr>\n | <\/td>\n | <\/td>\n<\/tr>\n | Total<\/strong><\/td>\n | $209.80<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n | One of the key functions of the helmet will be to plot the data with points from the GPS receiver.\u00a0 This will allow data to be layered on maps for route analysis. The steps on how to do this has yet to be refined.\u00a0 The GPS\u00a0receiver and CO2 sensor I sourced will put me over budget.\u00a0 I also held back purchasing the Tilt-Compass and Pulse Sensor.\u00a0 The Dust Sensor was out of stock and didn’t include the connection cable.\u00a0 I was able to find the Dust Sensor on eBay so I’ll need to make a determination.\u00a0 The item is key but the function can be offset using the GPS functions of a smart phone.<\/p>\n The imaging system, described in the next post, will record 1280p 30fps video.\u00a0 The sensor data points can be overlaid on this video for visual analysis.\u00a0 This will be done with Dashware<\/a> and was demonstrated in my QuickFire video<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":" In my earlier post titled “Designing a Sensor Helmet” I defined the groups that the helmet is comprised of.\u00a0\u00a0\u00a0Since the main purpose of the helmet was to detect telemetry, this post I will go into more details on the sensor group. The electronic sensors supplied fall into to types, analog (A) and digital (D).\u00a0 This will determine how the micro controller will read them.\u00a0 The sensors that will be incorporated into the helmet fall into 4 use categories, these are:…<\/p>\n |