Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1989-09-22
1990-11-06
Swann, III, Glen R.
Communications: electrical
Condition responsive indicating system
Specific condition
119 15, 250221, 340556, G08B 1318, G08B 2100
Patent
active
049689746
ABSTRACT:
An observation apparatus comprises a transparent keeping cage having cylindrical outer and inner walls defining an annular keeping space therebetween, a group of circumferential position detectors, a group of standing action detectors, a group of inner peripheral position detectors, a group of outer peripheral position detectors, and a data processing unit for processing detection signals produced by the detectors to determine the actions of an experimental animal through the analysis of the detection signals produced by the detectors. The detectors of each group are arranged on a circle at equal angular arrangement. Four detectors each belonging to one of the four groups of detectors are arranged in a set on the same radius and driven simultanelously or sequentially, and the sets of the detectors are driven sequentially one at a time to avoid interference between the detectors. The data processing unit is simple and compact in construction and has amplifiers for each set of the detectors. The transparent keeping cage and its annular keeping space enables the natural, spontaneous movement of the experimental animal in a three-dimensional space.
REFERENCES:
patent: 3803571 (1974-04-01), Luz
patent: 4337726 (1982-07-01), Czekajewski et al.
patent: 4448150 (1984-05-01), Catsimpoolas
Swann III Glen R.
Toyo Sangyo Kabushiki Kaisha
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