Occupancy sensing apparatus network

A network of occupancy sensors, comprising:

• two or more occupancy sensors configured to detect occupants within two or more detection zones, the two or more occupancy sensors configured to determine locations of detected occupants relative to the two or more occupancy sensors, each occupancy sensor of the two or more occupancy sensors comprising:
• a device control assembly configured to be toollessly inserted into or removed from a cavity of a backplate mounted in an electrical junction box by a user, the backplate including backplate electrical contacts connected to electrical wiring within the electrical junction box, the backplate including a user-translatable cover configured to electrically shield the backplate electrical contacts when in a closed position and expose the backplate electrical contacts when in an open position, wherein the backplate includes a lock to maintain the cover in the closed position unless the device control assembly is inserted into the cavity, the device control assembly comprising:
• device control assembly electrical contacts configured to couple to the backplate contacts when the cover is in the open position;
• a detector configured to generate an image;
• one or more illumination sources, the one or more illumination sources configured to emit illumination including at least one wavelength of radiation measurable by the detector;
• and
• a controller communicatively coupled to the detector, the controller configured to:
• receive illuminated images from the detector generated with illumination from at least one of the one or more illumination sources;
• generate processed images with filtered ambient light by subtracting an ambient image from the illuminated images, the ambient image generated without illumination from the one or more illumination sources;
• classify one or more objects in the processed images as one of human or non-human based on shapes of the one or more objects;
• and
• detect occupants when at least one human object is identified in a processed image.

An occupancy-sensing apparatus, comprising:

• a backplate configured to mount to an electrical junction box, the backplate further configured to connect to electrical wiring within the electrical junction box;
• and
• a device control assembly, the device control assembly configured to be toollessly and interchangeably coupled into a cavity of the backplate the device control assembly configured to receive electrical power from the backplate when inserted into the backplate, the device control assembly comprising:
• a detector configured to generate an image;
• one or more illumination sources, the one or more illumination sources configured to emit illumination including at least one wavelength of radiation measurable by the detector;
• and
• a controller communicatively coupled to the detector, the controller configured to:
• receive illuminated images from the detector generated with illumination from at least one of the one or more illumination sources;
• generate processed images with filtered ambient light by subtracting an ambient image from the illuminated images, the ambient image generated without illumination from the one or more illumination sources;
• classify one or more objects in the processed images as one of human or non-human based on shapes of the one or more objects;
• and
• detect occupants when at least one human object is identified in a processed image.