A flame sensor (UV TRON) made by HAMAMATSU PHOTONICS, Japan, is an ultraviolet light detector. It has a narrow spectral sensitivity of 185 nm to 260 nm, being completely insensitive to visible and infrared light. Unlike semiconductor detectors, it does not require optical visible-cut filters, thus making it easy to use. In spite of its small size,
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it has wide angular sensitivity and can reliably and quickly detect weak ultraviolet radiations emitted from flame (eq. it can detect the flame of a cigaret lighter at a distance of 5 meters). The sensor is well suited for use in flame detectors and fire alarms. Compare with the other fire alarm, such as smoke detector, I found that this flame detector sensor can not distinguish how big the fire it is. So I think it more suitable to put in the place which can not even allow a small flame, for example, paper manufacturing factory. Here are some more common applications for the sensor may include, Flame detectors for gas/oil lighters and matches Fire alarms Combustion monitors for burners Inspection of ultraviolet leakage Detection of discharge Ultraviolet switching Such as the pictorial example from HAMAMATSU: Another exemplar use of the sensor is a competition robot in Trinity Firefighting Robot Contest from Ohio Northern University. The robot is to navigate through a model floor plan of four rooms where a candle representing a flame source is randomly placed, locate the candle, extinguish it, and return safely to its starting location. The sensor`s theory of detection is actually fairly simple. When ultraviolet rays such as those from an open flame hits the cathode leg of the sensor, electricity or more specifically, photoelectrons, is generated. When the electrons flow toward the anode leg of the sensor combining the...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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