neskapeais
Newbie level 3
uvtron sensor
I used Hamamatsu UV Tron flame sensor to detect the presence of a candle flame with the C3704 driving circuit. Some modification has been made to the driving circuit in order to get stabile output signal. I’ve put a 1uF capacitor to increase the pulse width to 1 second. I’ve also attached 5V regulated supply wire (5.52V actually) to the hole marked “O”, ground wire to the “-“ and the signal wire to the “2” which is directly connected to the PIC microcontroller type PICF84A. I’ve measured the voltage from output 2 and got 5.52V. As I know, the voltage should decrease to 0V when the fire is on. Unfortunately, when I lighted on the fire, the voltage didn’t decrease to 0V as it should be. Did anything goes wrong with the driving circuit or did I do any wrong connection to the driving circuit? Can someone who had experiences using this kind of sensor help me to solve this problem? Thanks!
I used Hamamatsu UV Tron flame sensor to detect the presence of a candle flame with the C3704 driving circuit. Some modification has been made to the driving circuit in order to get stabile output signal. I’ve put a 1uF capacitor to increase the pulse width to 1 second. I’ve also attached 5V regulated supply wire (5.52V actually) to the hole marked “O”, ground wire to the “-“ and the signal wire to the “2” which is directly connected to the PIC microcontroller type PICF84A. I’ve measured the voltage from output 2 and got 5.52V. As I know, the voltage should decrease to 0V when the fire is on. Unfortunately, when I lighted on the fire, the voltage didn’t decrease to 0V as it should be. Did anything goes wrong with the driving circuit or did I do any wrong connection to the driving circuit? Can someone who had experiences using this kind of sensor help me to solve this problem? Thanks!