Contact detection device for vehicular use and security device for vehicular use

A security device for use in a vehicle having a door handle and a vehicle component, the security device comprising:

• an electrostatic capacitance sensing system that includes:
• a plurality of touch locations that a user touches, the plurality of touch locations being provided on the door handle;
• a sensor unit that outputs a detection signal in response to a change in electrostatic capacitance caused when the user touches the plurality of touch locations;
• a lock device that locks the vehicle component;
• and
• a controller that controls an operation of the lock device based on the detection signal from the electrostatic capacitance sensing system, wherein the controller includes:
• a mode-definition detection pattern setting unit that sets a mode-definition detection pattern that corresponds to a predefined pattern of human-induced touch to the plurality of touch locations,
• the mode-definition detection pattern being determined as corresponding to the predefined pattern of human-induced touch to the plurality of touch locations by analyzing (a) a sequence of user touches to the plurality of touch locations, (b) a time period between a start to an end of the sequence of the user touches, and (c) a time interval between the user touches,
• the mode-definition detection pattern corresponding to a predefined security mode;
• a detection signal determining unit that compares the detection signal output by the sensor unit and the mode-definition detection pattern to determine whether or not the detection signal and the mode-definition detection pattern match;
• and
• a security mode specifying unit that specifies the predefined security mode corresponding to the mode-definition detection pattern when it is determined that the detection signal output by the sensor unit and the mode-definition detection pattern match, wherein
• the specified security mode is executed by the lock device.