초록 ▼

A cellulose-containing member is provided with a plurality of holes transversely extending therethrough. An emitting element and a receiving element are located at opposite ends, respectively, of each of the holes. The presence or absence of termites is detected by the obstruction of an output wave

A cellulose-containing member is provided with a plurality of holes transversely extending therethrough. An emitting element and a receiving element are located at opposite ends, respectively, of each of the holes. The presence or absence of termites is detected by the obstruction of an output wave from the emitting element caused by termites invading the holes, whereupon a detection signal is generated to cause alarm lamps and so on to light up for alarm display. Simultaneously, in order to estimate the number of invading termites, the number of occurences of an obstruction by the termites of the output waves from the emitting elements is counted.

대표청구항 ▼

A termite alarm unit comprising: a sensor section including (a) a cellulose-containing member having a bottom surface and opposite side surfaces, said cellulose-containing member further having a plurality of vertical holes, each of said vertical holes extending vertically within said cellulose-cont

A termite alarm unit comprising: a sensor section including (a) a cellulose-containing member having a bottom surface and opposite side surfaces, said cellulose-containing member further having a plurality of vertical holes, each of said vertical holes extending vertically within said cellulose-containing member and having an opening at the bottom surface of said cellulose-containing member, and said cellulose-containing member further having a plurality of through holes, each of said through holes extending between the opposite side surfaces of said cellulose-containing member so as to cross and communicate with at least one of said vertical holes, (b) emitting elements, each of said emitting elements being inserted into one side of a respective one of said through holes and emitting an output wave, and (c) receiving elements, each of said receiving elements being inserted into another side of a respective one of said through holes and receiving the output wave emitted by a respective one of said emitting elements; a judgement section generating an output signal upon detecting the invasion of termites in response to the obstruction of at least one output wave from said emitting elements to said receiving elements within said through holes; and an alarm display section for issuing an alarm in response to the output signal from said judgement section.