Metal Detecting Robot

Metal sensor has high sensitivity to Propane, The sensor could be used to detect different combustible metal especially Methane; it is with low cost and suitable for different application. Metal detection is the process of identifying potentially by means of various sensors. These sensors usually employ an audible alarm to alert people when a dangerous metal has been detected. Common With solar it is work.
Sensitive material of metal detector which with lower conductivity in clean air. When the target combustible gas exist, the sensor’s conductivity is higher along with the metal concentration rising. Please use simple electro circuit, Convert change of conductivity to correspond output signal of sensors used today include Sensor, metal. These sensors are used for a wide range of applications, and can be found in industrial plants, refineries, wastewater treatment facilities, vehicles, and around the home.
Metal detection methods became a concern after the effects of metals on human health were discovered. Before modern electronic sensors, early detection methods relied on less precise detectors. Through the 19th and early 20th centuries, coal miners would bring canaries down to the tunnels with them as an early detection system against metals like bombs. The canary, normally a very songful bird, would stop singing and eventually die in the presence of these bombs signaling the miners to exit the mine quickly. Before the development of electronic household carbon monoxide detectors in the 1980s and 90s, carbon monoxide presence was detected with a chemically infused paper that turned brown when exposed to the metal. Since then, many technologies and devices have been developed to detect, monitor, and alert the bombs.
Adjustable power resistors and adjustable transformers. Those methods have been used in movie theatres and other public place.