Patent ID: 6388576
Filing Date: 2002-05-14
Classification: G01N,G08B

Abstract:
A minitype alcohol excessive warning device comprising a housing (10), and a detecting circuit;wherein, said housing (10) contains a receiving space therein, and has an outer periphery formed with a plurality of detecting openings (11) communicating with said receiving space, said detecting circuit is mounted in said receiving space of said housing (10), and includes a sensor (43) mating with said detecting openings (11), said detecting circuit further includes a power supply indicating lamp (24), a stand-by indicating lamp (35), and an excess warning lamp (46) each emitting light outward from said housing (10); and said detecting circuit further includes a power circuit (20), a delay circuit (30), and a sensing circuit (40), wherein: said power circuit (20) includes a battery (21) co-operating with a power switch (22) for supplying power, and a voltage decrease resistor (23) serially connected with said power supply indicating lamp (24) for indicating a power connection; said delay circuit (30) includes a first comparator (31), a delay resistor (32), a delay capacitor (33), a first signal detecting resistor (34), and said stand-by indicating lamp (35), said first comparator (31) includes a negative input side (312) that can obtain an input signal through said first signal detecting resistor (34), a positive input side (311) connected to said delay resistor (32) and said delay capacitor (33), and an output side (313) connected to said stand-by indicating lamp (35), such that after said detecting circuit has been energized by said battery (21), said stand-by indicating lamp (35) can be delayed to light during a predetermined period of time; and said sensing circuit (40) includes a second comparator (41), a second signal detecting resistor (42), said sensor (43), an adjustable resistor (44), a mating resistor (45), and said excess warning lamp (46), wherein said second comparator (41) includes a positive input side (411) that can obtain an input signal through said second signal detecting resistor (42), a negative input side (412) connected to said sensor (43) and said adjustable resistor (44) to obtain a detecting signal, and an output side (413) connected to said excess warning lamp (46), said sensor (43) has a first end connected to a power supply and a second end connected to said mating resistor (45) to obtain an electric power, and said adjustable resistor (44) is variable to preset an operation basis value of said second comparator (41).