Electromagnetic wave sensing apparatus

An electromagnetic wave sensing device, comprising:

• a first sensing unit, including at least a first sensing component, which is used to sense ambient light and generates a first sensing signal;
• a second sensing unit, including at least a second sensing component, which is used to sense electromagnetic wave of a specific range and generates a second sensing signal;
• a means of sensing signal process, which is used to receive the signals sensed by the first sensing unit and the second sensing unit, to perform signal transformation, in order to set the working mode of the electromagnetic wave sensing device, and to output the result accordingly;
• a temperature sensor, which is used to measure temperature around the electromagnetic wave sensing device, and the value of measured temperature is transformed to electronic signal referred for correcting the sensed signals;
• an emitter, coupled to the electromagnetic wave sensing device, for emitting detection signals;
• a transmission interface, by which the electromagnetic wave sensing device is connected to a host;
• a control unit connected with the transmission interface, for transferring the sensing signals to the host;
• and
• a function selector, electrically connected with the first sensing unit, the second sensing unit and the temperature sensor, wherein one or more of the first sensing unit, the second sensing unit and the temperature sensor are initiated based on a selection.