The large tonnage trucks are used in China's big opencast mines widspreadly and so consumption of giant tires is steadily on the increase. It is found that among a great quantity of scrapped tires quite a number of tires are damaged due to too low tira pressure, Therefore, through inspection adopting measures to keep normal tire pressure is a top priority for reducing consumption of tires, The aim, importance and technical scheme of the study are presented, aloog with internal and external general development situation. Expected profitability from using the automatic alarm system is evaluated