Electrical transmission or interconnection systems – Plural load circuit systems – Selectively connected or controlled load circuits
Patent
1983-04-22
1985-08-13
Moose, Jr., Harry E.
Electrical transmission or interconnection systems
Plural load circuit systems
Selectively connected or controlled load circuits
307114, 307115, 307140, 34082519, H02J 314
Patent
active
045352542
DESCRIPTION:
BRIEF SUMMARY
This invention relates to electric-power control devices having facility for selection of power connection to multiple outlets, and more particularly to a device of this kind which is made responsive to operator-touch.
BACKGROUND ART
An ideal application of this device is for use by the disabled where a person frequently desires to select for operation an electrical appliance, or facility, from several available to him. For example there may be such facilities available as an electric lamp, radiator, radio, television, and even a "nurse call" alarm. If individual controls or switches, are provided for his use confusion can arise, especially for a mentally retarded patient.
It is the principal object of the invention to provide a power control device responsive to operator-touch and which is simple to operate and functions reliably.
DISCLOSURE OF INVENTION
According to a general form of this invention there is provided a selective power control device for the connection of electric power from a source to a selected one of a plurality of power lines associated with individual electrical functions or appliances, comprising a presentation to the operator of the functions or applicances available to him, operator-controlled sensor means, means responsive to a first signal from said sensor means to initiate a successive identification to said operator of individual ones of said functions or appliances, means responsive to a second signal from said sensor means to halt said successive identification at a selected one of said functions or appliances, and means to switch on power from said source to said power line associated with said selected one of said functions or appliances.
BRIEF DESCRIPTION OF DRAWINGS
The invention will now be described in more detail with reference to the accompanying drawings, in which:
FIGS. 1A and 1B show respectively a front perspective, and a rear perspective on a smaller scale, of the cabinet of a power control device according to this invention;
FIG. 2 is a block diagram of the circuit of the power control device;
FIGS. 3A and 3B together depict a detailed schematic drawing of the circuit of said device;
FIG. 4 shows schematically the construction of the power supply circuit;
FIGS. 5A and 5B depict the circuit of the touch sensor and wave forms occurring therein;
FIG. 6 is a schematic drawing of the clock oscillator; and,
FIGS. 7A, 7B and 7C show wave forms associated with the clock oscillator.
BEST MODE OF CARRYING OUT THE INVENTION
The selective power control device of the invention is housed within a cabinet 10 such as shown in FIGS. 1 and 2. A power cable 11 for connection to a power source (not shown) is connected to electronic circuitry within the cabinet 10 and an operator's touch sensor device 12 is plugged into the rear 18 of the cabinet 10. A row of power sockets 13 are arranged at the rear 18 of the cabinet 10 into which may be inserted the power plugs of respective electrical applicances (not shown). A row of function panels 14 with corresponding overhead neon indicators 15 are arranged along the front 19 of the cabinet 10. The functions as shown, which may be varied, are in order "nurse call", light, fan, radio and television. Each of the panels 14 includes an interior lamp for illumination in turn during cycling of the individual functions as will become clear from the following description. An ON-OFF power button 16 and a selector-speed slide control 17 are also accessible to the operator at the front 19 of the cabinet 10.
The electronic circuit within cabinet 10 is shown generally by the clock diagrammatic representation of the power control device shown in FIG. 2. A touch interface 20 controls a divide-by-two flip-flop circuit B1 in such a manner that at successive touches of the sensor 12, the output 1 of B1 goes alternately high (+12v) and low (ov). These two states at the output of B1 correspond to two distinct phases of the circuit operation as follows: phase 1 serves for channel cycling where output 1 of B1 is high, and output 2 of B1 is low, while
REFERENCES:
patent: 3416001 (1968-12-01), Fistell
patent: 3704422 (1972-11-01), Thomson
patent: 3719828 (1973-03-01), Lipskin
patent: 3854055 (1974-12-01), Sparko
patent: 4156193 (1979-05-01), Baker
patent: 4282422 (1981-08-01), Payne et al.
Patient Breath Pulse Control System for Operating Various Electrical Devices, by R. P. Sapp, Western Electric Tech. Digest, No. 54, 4-1979.
Electrical Equipment Limited
Jennings Derek S.
Moose Jr. Harry E.
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