1. A body temperature detector comprising:
a radiation sensor which views a target surface area of the body and provides a radiation sensor output;
an ambient temperature sensor; and
electronics coupled to the radiation sensor and ambient temperature sensor, which compute an internal temperature of the body as a function of the ambient temperature and a target surface temperature derived from the radiation sensor output, the function including a difference of the target surface temperature and the ambient temperature weighted by a weighting coefficient, the weighting coefficient being varied with the sensed target surface temperature.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. An apparatus for activating a heat conductive wire, which is adapted to a wiper assembly comprising a wiper arm, a wiper body, a wiper blade, a crank equipped under the hood of a vehicle for transferring a driving force to the wiper arm, and a wiper motor for reciprocating said wiper arm whose one end is connected to the crank, said apparatus for activating the heat conductive wire comprising:
a heat conductive wire made of electrical resistant material for outputting heat in response to electric current;
a wiping angle detector sensing a rotating angle of said wiper arm;
a data storage element having a level data regarding the rotating angle of said wiper arm;
a controlling element generating a high-level controlling signal for activating the heat conductive wire when the rotating angle detected by said wiping angle detector is lower than a predetermined angle;
an electric power supply providing electric current for activating the heat conductive wire;
a transistor releasing electric current from an emitter to a collector in response to the high-level controlling signal produced by said controlling element;
and a relay switch being turned on by means of electromotive force induced by electric current released from said transistor,
whereby said heat conductive wire is eventually activated when said rotating angle of the wiper arm is smaller than the predetermined angle.
2. The apparatus for activating a heat conductive wire according to the claim 1, wherein said wiping angle detector senses a rotating angle of the wiper arm by means of the electroluminescencelight receiving sensors located onbeneath the surface of the crank which is connected to the wiper arm.
3. The apparatus for activating a heat conductive wire according to the claim 1, wherein said heat conductive wires are fit into grooves formed along the wiper blade which tightly contacts with the windshield and is installed on the bottom surface of the wiper body.