Dual sensing receptacles

What is this patent about?

’755 is related to the field of power-operated receptacles, specifically trashcans equipped with automated lid mechanisms. Traditional sensor-activated bins often suffer from poor calibration, leading to accidental openings caused by passersby or stationary furniture, which prematurely drains batteries and wears out motors. The invention seeks to improve the reliability of these devices by implementing a more sophisticated multi-zone sensing logic that distinguishes between intentional use and environmental noise.

The underlying idea behind ’755 is a dual-axis sensing strategy that uses a primary vertical trigger to wake the system and a secondary horizontal field to confirm presence. By keeping the horizontal sensors inactive until an object is first detected above the bin, the system conserves power and ignores lateral movement from people simply walking past. This staged activation ensures that the lid only opens when a user is actually positioned to interact with the receptacle, rather than reacting to every nearby movement.

The claims of ’755 focus on a sensor assembly utilizing at least two transmitters with generally perpendicular transmission axes and a shared receiver. The independent claims specifically protect the logic of instructing a first transmitter to emit a signal and, only after an object is detected in that first region, triggering a second transmitter to begin emitting signals. This sequence is coupled with a command to a power-operated drive mechanism to transition the lid from a closed to an open position based on the initial detection.

In practice, the system operates in a low-power ready-mode where only the vertical sensor is active. Once a hand or object enters this top zone, the controller shifts into a hyper-mode, activating the horizontal transmitters to create a wider sensing field in front of the bin. This allows the lid to remain open as long as the user is standing nearby, even if their hands move away from the top of the lid. The invention also includes a clutch mechanism that allows for manual operation without stripping the motor gears, providing a fail-safe for users who prefer to move the lid by hand.

To further differentiate from prior art, the system incorporates an environmental calibration routine and a dirty lens compensation algorithm. The controller can detect if a signal reflection is coming from a stationary object or a contaminant on the lens cover by measuring proximity; if a reflection is detected at an extremely close range (e.g., less than 0.5 inches), the system identifies it as a smudge rather than a user. This allows the device to ignore false positives that would otherwise keep the lid permanently open, a common failure point in simpler automated trashcans.