A control system and pathogen inactivation method to reduce cross-contamination within operational devices that experience sequential touching of touch spots on the operational device by multiple people. Additionally, the system controls and then executes the reconfiguration of touch spot position to increase the probabilistic time interval between sequential touches from a first person to a second person physically interacting with the operational device. The dynamic reconfiguration control system reduces the probability of cross-contamination between sequential personal touches in sequential user sessions.

A disinfecting system and method for an enclosed space include an articulating arm moveably coupled to a structure within the enclosed space. An ultraviolet (UV) lamp is coupled to the articulating arm. The UV lamp is configured to emit UV light toward a disinfection zone within the enclosed space. The articulating arm allows the UV lamp to move relative to the disinfection zone.

The present disclosure provides an ultraviolet (UV) sterilization apparatus that is capable of changing an emission mode and/or an emission angle. The UV sterilization apparatus includes a sterilization unit configured to be movable to a predetermined position and including a UV emitter, and a driving unit configured to move the sterilization unit.

The present disclosure provides an ultraviolet (UV) sterilization apparatus that is capable of changing an emission mode and/or an emission angle. The UV sterilization apparatus includes a sterilization unit configured to be movable to a predetermined position and including a UV emitter, and a driving unit configured to move the sterilization unit.

The present disclosure provides an ultraviolet (UV) sterilization apparatus that has improved heat dissipation performance and is capable of being changed in position. The UV sterilization apparatus includes a sterilization unit configured to be movable to a predetermined position and including a UV emitter, a driving unit configured to move the sterilization unit, and a cover having a structure accommodating the sterilization unit and allowing the inside of the cover to communicate with the outside. A heat sink is provided in the cover in order to dissipate heat from the sterilization unit.

The present disclosure provides an ultraviolet (UV) sterilization apparatus that has improved heat dissipation performance and is capable of being changed in position. The UV sterilization apparatus includes a sterilization unit configured to be movable to a predetermined position and including a UV emitter, a driving unit configured to move the sterilization unit, and a cover having a structure accommodating the sterilization unit and allowing the inside of the cover to communicate with the outside. A heat sink is provided in the cover in order to dissipate heat from the sterilization unit.

An HVAC duct ozone generator includes at least two ozone generation plate stacks, where each plate stack includes at least two independently electrically addressable plate groupings, where a primary plate grouping includes fewer ozone generation plates than a secondary plate grouping. Thus, the generator includes at least four independent ozone generation control channels to energize the primary and secondary plate groupings of each of the at least two plate stacks. The number of plates in a plate grouping may optionally be altered to reduce the ozone generation capacity of the primary plate grouping in relation to the secondary plate grouping through the movement of resistive collars between the stacked ozone generation plates.

An HVAC duct ozone generator includes at least two ozone generation plate stacks, where each plate stack includes at least two independently electrically addressable plate groupings, where a primary plate grouping includes fewer ozone generation plates than a secondary plate grouping. Thus, the generator includes at least four independent ozone generation control channels to energize the primary and secondary plate groupings of each of the at least two plate stacks. The number of plates in a plate grouping may optionally be altered to reduce the ozone generation capacity of the primary plate grouping in relation to the secondary plate grouping through the movement of resistive collars between the stacked ozone generation plates.

A sanitation device includes a housing with a channel extending into the housing and a plurality of openings in the channel. A plurality of light emitting diodes emit light through the openings in the channel. A shield is coupled to the housing and a motion sensor emits and detect light through the shield when activated, such that the shield narrows a field of view of the motion sensor. The sanitation device is positioned near a common touch point with the motion sensor determining when an object is near, and has moved away from, the touch point. The plurality of light emitting diodes are activated to clean the touch point after the object moves away. The sanitation device may further include a status indicator light to provide information regarding the current state of operation of the sanitation device.

A personal, portable, handheld UV light sanitizer (20) having a tubular housing (22) with a UV light source (32) for uniformly radiating a user's hand through a light transmittable outer wall (24) of the housing having a girth and length that enables substantially the entire the exterior surface of the outer wall to be covered by a user's hand when fully grasping the outer wall. A rearward annular wall (41) reduces any rearward light leakage and provides a bearing surface against which the edge of the user's hand may rest to prevent slippage. An annular forward wall (40) reduce forward light leakage and mounts actuation switches (36, 56), remote sensors (58, 60), a status indicator light (61) and an alarm speaker (59). When the skin surface sanitization mode switch (36) is actuated, skin sanitizing UV light radiation (42) radiates the inside of the user's hand for a preselected time period, unless there have previously been an excessive number of past hand sanitization cycles or too little time has passed since the last hand sanitization cycle (FIG. 9). Once energization, it is automatically deenergized after a preselected maximum time period (FIG. 9). Mounted to the front of the forward annular wall is another UV light source (51) that radiates UV light to suspect target surfaces spaced from the user's hand. A range finder (58) helps the user to hold the surface UV light source at the right distance from the target surface for effective sanitization, and energization is immediately terminated in response to an infrared sensor detecting that the surface UV light source is directed at a person's skin.