Lg Electronics Inc.

Young Cho Shim

Tae Yoon Kim

Jong Uk Bu

Jun Bae Lee

In Sik Kim

Infrared sensor that can make a temperature compensation by itself, and method for compensating a temperature thereof, are disclosed. The infrared sensor preferably includes a substrate, a diaphragm formed on the substrate, and a first thermopile sensor formed on a region of the diaphragm for sensing an infrared radiation emitted from a measured object and infrared radiations emitted from regions other than the measured object. A second thermopile sensor is formed on a region of the diaphragm and connected to the first thermopile sensor for sensing the infrared radiations emitted from the regions other than the measured object. A housing protects a front face of the substrate including the first, and second thermopile sensors includes an infrared filter in the housing over the first and second thermopile sensors for transmission of infrared radiations, and a reflector reflects the infrared radiation emitted from the measured object toward the first thermopile sensor. The method for temperature compensation can include the steps of letting an infrared radiation from a measured object be directed to the first thermopile sensor and letting infrared radiations from regions other than the measured object be directed to the first and second thermopile sensors, respectively, sensing the infrared radiations in the first and second thermopile sensors directed thereto, and making a temperature compensation for the infrared radiations from regions other than the measured object using the first and second thermopile sensors to provide a temperature component of the measured object only.

Infrared sensor and method for compensating temperature thereof

A method for calculating a PMV for an air conditioning system having a body sensor and a temperature sensor includes the steps of sensing a thermal change a human body senses due to room air circulation using the body sensor, and converting the sensed thermal change into a digital value, sensing a room temperature using the temperature sensor, and converting the sensed room temperature into a digital value, assigning parameters according to human bodily activities and amount of clothes a man wears classified by seasons and times, and calculating a PMV by computing the value of thermal change converted into a digital value, the value of room temperature converted into a digital value, and the parameters.

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Kyungki-do, South Korea

Young Cho Shim