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US 2003/0146842 A1Published application
Heat detector
OwnerChi-Chang Liuinventor
Life of this patent
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Abstract
The present invention has a microprocessor, a head sensor, a graphic display and a keypad. When a distance between the heat sensor and heat source changes, a frequency of a wave pattern shown on the graphic display has high and low states. The user just sees the graphic display to clearly know whether the heat source close to the body from the frequency of wave pattern changing. Besides the heat detector further has at least one laser diode to point a position corresponding to the location of the heat source and an alarm unit to warn the user that the heat source is closing.
Claims5
A heat detector comprising:
- a microprocessor having multiple input ports and output ports;
- a heat sensor connected to an input port of the microprocessor to detect heat from a heat source;
- a graphic display connected to an output port of the microprocessor to display a wave pattern;
- and
- a keypad connected to an input port of the microprocessor to select the specific functions of the heat detector;
- wherein
- when a distance between the heat source and the heat sensor changes, a frequency of the wave pattern presented on the graphic display has high and low states.
4 more elements
Dependencies are inferred from the claim text.