Abstract:
PURPOSE: A malfunction prevention device and a method for a shift lever of an automatic transmission are provided to prevent a driver from operating the shift lever wrongly without completely moving the shift lever from a P-range to an R-range by turning on a warning lamp with a control unit if pressure detected by a pressure sensor is below a reference value. CONSTITUTION: A malfunction prevention device for a shift lever of an automatic transmission is composed of a P-range sensing switch(10) for detecting if the shift lever is positioned in a P-range; an R-range sensing switch(20) for detecting that the shift lever is in an R-range; a pressure sensor(30) for detecting pressure applied to the shift lever by a driver; and a control unit(40) for judging if the shift lever is moved from the P-range to the R-range according to output signals of the switches and then operating a warning lamp(50) or an AV(Audio and Visual) system(60) according to the pressure detected by the pressure sensor.
Abstract:
PURPOSE: A device for automatically opening a trunk for a car is provided to prevent accidents by simultaneously opening the trunk and lighting a lamp through the operation of a solenoid by sensing infrared energy emitted from men with an infrared sensor, determining whether or not there are the men through signal from the sensor by a controller and outputting control signal. CONSTITUTION: A device for automatically opening the trunk for the car includes an infrared sensor part(10) for sensing infrared energy emitted from men, a controller(20) having an amplifier(30) for amplifying signal sensed from the sensor part, a filter part(40) for removing noise from the amplified signal and a comparator(50) for comparing signal output from the filter part with a set value, a solenoid driving part(60) for opening through a relay operation by control signal output from the controller, and a lamp(70) for giving a driver warning signal by another control signal output from the controller.