초록 ▼

An electronic control system which can control the operation of a number of electrical devices such as lights, outlets, sensing apparatus, etc., all of which are energized from the same power lines. Each of the electrical devices is respectively connected to the power lines by an addressable switch

An electronic control system which can control the operation of a number of electrical devices such as lights, outlets, sensing apparatus, etc., all of which are energized from the same power lines. Each of the electrical devices is respectively connected to the power lines by an addressable switch unit. A central control unit is connected to the power line and generates a binary coded time division multiplex signal, including an address portion and a command portion. The encoded signal is transmitted directly onto the power lines and is received by the addressed switch, which responds to the command to control the state of the electrical device, and in turn sends a status response onto the power lines which is received at the central unit.

대표청구항 ▼

An electronic control system for controlling the operation of a plurality of electrical devices which are energized from AC power lines, said control system comprising: (a) a single central unit connected to the power lines and including: (1) central transceiver means for transmitting an encoded osc

An electronic control system for controlling the operation of a plurality of electrical devices which are energized from AC power lines, said control system comprising: (a) a single central unit connected to the power lines and including: (1) central transceiver means for transmitting an encoded oscillating signal of one frequency onto the power lines; (2) central encoding means for encoding said oscillating signal with an encoded signal in synchronization with the frequency of the AC power for selective control of electrical devices; (3) central control means connected to said encoding means for selecting the electrical device to be controlled and its desired state; (b) unitary switch units respectively interconnected between power lines and each electrical device being operative for both local and centralized control of the electrical device with the local control and the centralized control placing the electrical device in respective opposite states from each other, each switch unit including: (4) switch transceiver means for receiving the encoded oscillating signal from the power lines; (5) switch decoding means coupled to the switch transceiver means for detecting the encoded signal; (6) switch control means connected to said switch decoding means for setting the selected electrical devices to the desired state, and (7) local conTrol means for selectively locally operating the electrical device independently of the central unit and placing the electrical device in a state opposite from that which it was placed by the central unit.