Rev. 3.1
ezPyro
TM
Pyroelectric Infrared
Flame Detection Evaluation Kits
User Manual
Page 1: ...Rev 3 1 ezPyroTM Pyroelectric Infrared Flame Detection Evaluation Kits User Manual...
Page 2: ...THE SOFTWARE 5 7 2 CONNECTING SOFTWARE TO THE EVALUATION KIT 6 7 3 EZPYROTM SENSOR SETTINGS 7 7 4 SIGNAL VIEWING 9 7 5 FLAME DETECTION ALGORITHM 9 7 5 1 Additional Signal Viewing Features 9 7 5 2 Flam...
Page 3: ...tion Evaluation Kits 2 Getting started 2 1 Hardware Variations There are 2 variations of the hardware that can be used with the ezPyroTM Flame Detection software the 4 sensor SMD and the 3 sensor TO F...
Page 4: ...loaded from Microsoft s website A driver is needed for the STM32F303K8T6 microcontroller This is included in the software package 4 Installing the ST Microcontroller USB Driver The USB supplied contai...
Page 5: ...the functionality of the ezPyroTM sensors please consult the ezPyroTM Sensor Reference Manual The ezPyroTM Flame Detection Evaluation software runs on Microsoft Windows PCs and communicates with the e...
Page 6: ...capture board is using as shown in Figure 4 Select the desired com port If you are unsure which com port is assigned to your PCB you can unplug the USB cable and click Refresh which will remove the p...
Page 7: ...ng See Figure 7 The SMD and TO GUIs both provide the same functionality and work in the same way Sample Frequency Hz This label shows the calculated frequency of incoming data The calculation is based...
Page 8: ...available on the standard USB stick supplied with all Evaluation kits The ezPyroTM Evaluation Tool will provide raw data recording only Gain Settings The gain for the amplifier is set by selecting a...
Page 9: ...Settings on the main screen 7 5 1 Additional Signal Viewing Features The additional features which will be enabled with the algorithm are Fourier Transform frequency domain representation of the signa...
Page 10: ...nge This allows different signal levels to be visualised proportionally next to each other Freq sum This is the value acquired by summing the frequency bins set by the user shown with red columns in F...
Page 11: ...of the signal to provide a view of the frequencies that the signal is composed of These frequencies are viewed by following the steps listed in the previous section on signal viewing Figure 15 Flame...
Page 12: ...by the user High Freq Cutoff This is field is set to the value for the upper limit of frequency to be used by the algorithm Low Freq Cutoff This field is set to the lower limit of frequency to be use...
Page 13: ...m signal strengths shown in Figure 18 the effects of the thresholds and multipliers can be observed It is recommended that the Evaluation kit is put into a box so that only electrical noise levels are...
Page 14: ...d ratios As can be seen the required threshold for a flame event has been lowered to less than the signal level for both channels Human motion threshold is half the actual signal and Reject is 75 of t...
Page 15: ...ful to view the data in such a way as it shows you the actual frequencies that you should be interested in For initial testing with our Evaluation kit this is very desirable Most system designers use...
Page 16: ...due to the signal level meeting the requirements of the WUP packet 8 2 Wake Up Parameters The WUP Register As mentioned in the previous sub section the device can be woken up from the sleep state thr...
Page 17: ...st power capabilities of the system If setting the WUP registers for use in low power mode the calibration of the WUP should also be performed in low power mode as there are performance differences be...
Page 18: ...to display file and version information about the ezPyroTM Flame Sensing Evaluation Tool software Figure 24 About box 12 Further Information and Support The Pyreos website has a list resources availab...
