The 6 to 12 volts enables the onboard sensor heater and the output signal. The output signal is an analog voltage which is inversely related to the amount of carbon dioxide present at the sensor. In other words, as the amount of carbon dioxide increases, the output voltage decreases. The sensor appears fairly sensitive and responsive and seems to support a sample rate of up to twice per second. Based on these details, we should be able to both identify the changes in the peak carbon dioxide output of the subject and measure the time between the nth and (n + 1)th peaks, to infer an exhalation rate. | The 6 to 12 volts enables the onboard sensor heater and the output signal. The output signal is an analog voltage which is inversely related to the amount of carbon dioxide present at the sensor. In other words, as the amount of carbon dioxide increases, the output voltage decreases. The sensor appears fairly sensitive and responsive and seems to support a sample rate of up to twice per second. Based on these details, we should be able to both identify the changes in the peak carbon dioxide output of the subject and measure the time between the nth and (n + 1)th peaks, to infer an exhalation rate. |