Safety swimming pool apparatus

An electrical subsystem for a swimming pool having a permanently buoyant safety rescue floor, releasable by a triggering sub-circuit, initiated by activation of a sensor sub-circuit, the electrical subsystem comprising:

• said buoyant safety floor associated with one or more low power submerging actuators;
• a solar power supply and a sensor/trigger circuit wherein said solar power supply has at least one photovoltaic solar panel, a solar battery charger, and a storage battery which is kept at an optimal state of charge;
• said solar power supply supplying low voltage DC to said sensor/trigger circuit;
• said sensor/trigger circuit comprising a single-pole single-throw (SPST) system switch for on/off control of sensing/triggering function, a limit switch sub-circuit to detect if each of said one or more low power submerging actuators has reached its bottom floor limit in the swimming pool, a sensor sub-circuit to automatically detect a person or other substantial entity entering the pool water or to respond to one or more manually operated momentary SPST emergency switches being activated to signal a triggering sub-circuit to permit said buoyant rescue floor to rise if said sensor sub-circuit is activated;
• wherein said solar power supply further comprises:
• an AC back-up with an AC input of 120 or higher AC mains voltage locally available, wherein a solid state relay is normally OFF, but said solid state relay is triggered ON by a low-voltage sensor denoting a problem with said at least one photovoltaic solar panel, said storage battery, said solar battery charger, or with their interconnections;
• wherein further, when said solid-state relay is triggered ON, a step-down transformer is powered, supplies low voltage AC to a diode and a filter capacitor circuit, creates an alternate source of low voltage DC energizing a relay with a single-pole-double-throw contact arrangement, which said contacts substitute said AC supplied low voltage DC at the same output terminal for the DC voltage that is normally sourced from said solar panel and said storage battery;
• wherein said sensor/trigger circuit further comprises:
• said limit switch sub-circuit comprising a series connection of said system switch in series with one or more normally open SPST limit switches each associated with one said one or more low power submerging actuators wherein said limit switches close when their associated said submerging actuators have reached their bottom floor limit in the swimming pool, said series connection of limit switches providing power to said sensor sub-circuit, said triggering sub-circuit, and a ready status indicator which signifies the arming of said safety rescue floor to rise in response to actions of said sensor sub-circuit and said triggering sub-circuit;
• said sensor of said sensor sub-circuit incorporating a floating momentary contact SPST tilt switch detecting ripples on the water surface, thereby denoting a person or other substantial entity entering the water;
• said sensor sub-circuit further comprising said one or more momentary manual emergency SPST switches being wired in parallel with said floating SPST tilt switch, with a relay used to latch the intermittent signal from said parallel arrangement of said sensor and said manual emergency switches into a solid activation signal via feedback contacts;
• and,
• wherein further a main relay contact of said latching relay drives said triggering sub-circuit comprising a parallel connection of one or more triggering devices, each one associated with one of said at least one or more submerging actuators whereby said triggering devices release each said submerging actuator from restraining said buoyant rescue floor, thereby permitting said buoyant safety rescue floor to rise.