auto-warning device at change an article of consumption for car

摘要

PURPOSE: An automatic alarm apparatus for replacing expendables of a vehicle is provided to alarm the replacement time of articles such as engine oil, an engine oil filter, an air filter, a brake disk, a brake pad, and transmission oil to replace periodically against degradation to a driver. CONSTITUTION: An automatic alarm system(1) comprises a microcomputer(10) controlling the system and calculating the use time of expendables through program; a control switch unit(20) inputting a control signal to reset the predetermined values of expendables; a display unit(30) showing reference data, replacement time and an alarm; a transmission rpm signal interface unit(40) processing rpm signals from the transmission to the microcomputer; an engine rpm signal interface unit(50) processing a signal from a current detecting sensor(52) to the microcomputer; a power supply unit(60) supplying power from a battery; and a sound output unit(70) alarming the replacement time by outputting melody or sound. The replacement time of expendables is alarmed automatically to the driver.