Systems and methods for providing low-power sensing, identification, and sweep detection for items on a sensor mat are provided. Item detection sensors are provided in grid on a sensor mat. A first subset of the item detection sensors are sensed at a first time, and a second subset of the item detection sensors are sensed at a second time. The item detection sensors of the first and second subsets are chosen such that they span the surface of the sensor mat, and so that the sensors of the chosen subsets include all of the sensors of the mat after multiple sensing steps have been completed.

Systems and methods for providing low-power sensing, identification, and sweep detection for items on a sensor mat are provided. Item detection sensors are provided in grid on a sensor mat. A first subset of the item detection sensors are sensed at a first time, and a second subset of the item detection sensors are sensed at a second time. The item detection sensors of the first and second subsets are chosen such that they span the surface of the sensor mat, and so that the sensors of the chosen subsets include all of the sensors of the mat after multiple sensing steps have been completed.

An optical sensor can be multiplexed for different clients/features including estimating information or characteristics of a user's physiological signals. Additionally, the clients/features can include estimating information or characteristics independent from a user's physiological signals. As the number of clients increase and/or as the requirements for the clients increase, flexibility can be provided to accommodate the various clients. Parallelization of the optical sensor can be used to improve performance as the number of clients increase. For example, the hardware and software architecture can assemble patterns of time slots that measure all desired light paths for the multiple clients and distribute the corresponding measurements to each client according to the client requests. In some examples, the scanning sequence can be represented by frames including slots associated with multiple clients to compress the representation for larger or more complex scan sequences.

An optical sensor can be multiplexed for different clients/features including estimating information or characteristics of a user's physiological signals. Additionally, the clients/features can include estimating information or characteristics independent from a user's physiological signals. As the number of clients increase and/or as the requirements for the clients increase, flexibility can be provided to accommodate the various clients. Parallelization of the optical sensor can be used to improve performance as the number of clients increase. For example, the hardware and software architecture can assemble patterns of time slots that measure all desired light paths for the multiple clients and distribute the corresponding measurements to each client according to the client requests. In some examples, the scanning sequence can be represented by frames including slots associated with multiple clients to compress the representation for larger or more complex scan sequences.

Systems, devices, and methods for stopping the rotation of propellers used in unmanned aerial vehicles (UAV) such as drones are disclosed. The propellers are stopped in response to detecting when beams of light adjacent the propellers are blocked.

A proximity sensor comprising: a loop comprising an outer surface and an inner surface, at least a portion of the inner surface being a reflective surface; a light emitter positioned to emit light onto the reflective surface; a light detector positioned to preferentially receive light emitted from the light emitter and reflected from the reflective surface; and a processor that is configured, responsive to a set of instructions stored in a memory, to determine a degree of proximity of an object to the inner surface of the loop responsive to a reduction in an intensity of light emitted from the light emitter that is received by the light detector.

It is important to trap and identify mosquitos to ensure the safety of the population where mosquitos gather. The classification of a type of mosquito is typically accomplished by a unique wingbeat signature that is characteristic of different types of mosquitos. One of the goals of the trap is to quickly identify the mosquito and then quickly release the mosquito. This application will allow the user to obtain an approximate population so that the appropriate type and amount of insecticide can be applied to control the population to insure the health of the human and animal population while at the same time minimizing danger to the environment or surrounding ecosystem.

Methods, systems, and apparatus, including medium-encoded computer program products, for a light curtain system including a support frame arranged around a transport path including a product support, a light-emitting array including multiple light sources arranged along the support frame, each light source of the multiple light sources arranged along the support frame at a respective distance above the product support, a detector array including multiple light detectors, where each detector of the multiple light detectors is arranged on the support frame opposite the transport path from a light source of the multiple light sources and at a respective distance above the product support, and a data processing apparatus in data communication with the light-emitting array and the detector array.

Safety systems in distributed factory workcells intercommunicate or communicate with a central controller so that when a person, robot or vehicle passes from one workcell or space into another on the same factory floor, the new workcell or space need not repeat the tasks of analysis and classification and can instead immediately integrate the new entrant into the existing workcell or space-monitoring schema. The workcell or space can also communicate attributes such as occlusions, unsafe areas, movement speed, and object trajectories, enabling rapid reaction by the monitoring system of the new workcell or space.

The present invention relates to a trench cross-section reference line setting device, comprising: a trench reference line setting body unit (100) for setting a trench cross-section reference line, wherein the trench reference line setting body unit (100) has a sensor unit (10) at the center thereof, two horizontal units (20) orthogonal to each other on the upper surface thereof, and three laser light source units (30) and a grid photographing unit (110′), respectively, on the side surfaces thereof; a reference line setting tripod unit (200) rotatably coupled to the trench reference line setting body unit (100) and having a posture adjusting unit (230) and a height adjusting unit (250); and a trench stratum analysis server (300) for receiving a fault image photographed by the grid photographing unit (110′) of the trench reference line setting body unit (100) and creating a stratum map of a trench cross-section structure.