Boots – shoes – and leggings
Patent
1987-01-14
1990-04-10
Teska, Kevin J.
Boots, shoes, and leggings
165 22, 236 493, 340310R, 364493, 364506, G06F 1312, F24F 700
Patent
active
049166425
ABSTRACT:
An environmental control system for use in a greenhouse or another structure which requires the control of an ambient condition regulating element in response to a plurality of sensed parameters. The system includes a plurality of sensor elements and actuator elements, which communicate with a central control through communication interface units. In an illustrated embodiment the interface units communicate over previously installed AC power lines by frequency shift keyed signals. The central control unit maintains a protocol where, in response to operator inputs, addreses are assigned to different peripheral control elements to configure the system. The system is configured by assigning sets of equipment to separate zones of the structure which are individually controlled. All peripheral control elements are addressed in one zone before sequencing to control the next zone. When a peripheral control element is addressed, a sensor responds with data corresponding to a sensed parameter and an actuator executes a command. The central control executes a control program which is input by the operator for the most efficient energy use by the system. The central control is embodied as a personal computer including an expansion board and a specialized communication circuit which provides data transfer between the communication interface units and the personal computer.
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Kaiser Frederick P.
Lapp Theodore R.
O-Com, Inc.
Teska Kevin J.
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