A rotational speed measurement system includes a video device configured to obtain a video of a pulley of a conveyor belt system. The rotational speed measurement system also includes a strobe configured to generate a stroboscopic effect on the obtained video. The rotational speed measurement system also includes a memory device. The rotational speed measurement system also includes a network interface. The rotational speed measurement system also includes one or more processors configured to: generate a stroboscopic window using the strobe and the obtained video, synchronize the strobe with the obtained video using the stroboscopic window, determine a measured rotational speed for the pulley based on the synchronized strobe, and determine belt slippage based on the measured rotational speed.

A rotational speed measurement system includes a video device configured to obtain a video of a pulley of a conveyor belt system. The rotational speed measurement system also includes a strobe configured to generate a stroboscopic effect on the obtained video. The rotational speed measurement system also includes a memory device. The rotational speed measurement system also includes a network interface. The rotational speed measurement system also includes one or more processors configured to: generate a stroboscopic window using the strobe and the obtained video, synchronize the strobe with the obtained video using the stroboscopic window, determine a measured rotational speed for the pulley based on the synchronized strobe, and determine belt slippage based on the measured rotational speed.

A method for controlling gas dynamic spraying includes providing a particle jet by using an accelerating nozzle, illuminating the particle jet with illuminating light pulses, capturing images of the particle jet illuminated with the illuminating light pulses, and determining one or more velocity values by analyzing the captured images,
wherein the images are captured by using an imaging unit which includes imaging optics to form an optical image of an object plane on an image sensor by focusing light, wherein an optical axis of the imaging unit is inclined with respect to a central axis of the nozzle, and wherein the image sensor is inclined with respect to the optical axis such that the object plane is substantially parallel with a direction of movement of particles of the particle jet.

A method for controlling gas dynamic spraying includes providing a particle jet by using an accelerating nozzle, illuminating the particle jet with illuminating light pulses, capturing images of the particle jet illuminated with the illuminating light pulses, and determining one or more velocity values by analyzing the captured images,
wherein the images are captured by using an imaging unit which includes imaging optics to form an optical image of an object plane on an image sensor by focusing light, wherein an optical axis of the imaging unit is inclined with respect to a central axis of the nozzle, and wherein the image sensor is inclined with respect to the optical axis such that the object plane is substantially parallel with a direction of movement of particles of the particle jet.

A method for determining a rotational speed of a rotatably mounted component of a machine is disclosed, wherein image data of a marked region of the machine component are obtained in the form of a plurality of frames via a video camera, and the image data are evaluated, in order to determine the periodicity of the rotation of the machine component from the change over time of the image data in the frames of the machine component. The video camera is configured by selecting an active region for obtaining the image data from the total number of pixels of the video camera, in which an observation area is imaged, which is passed through by the marked region during the rotation of the machine component, wherein the active region comprises only a portion of the total number of pixels of the video camera, to increase the frame rate correspondingly.

A method for determining a rotational speed of a rotatably mounted component of a machine is disclosed, wherein image data of a marked region of the machine component are obtained in the form of a plurality of frames via a video camera, and the image data are evaluated, in order to determine the periodicity of the rotation of the machine component from the change over time of the image data in the frames of the machine component. The video camera is configured by selecting an active region for obtaining the image data from the total number of pixels of the video camera, in which an observation area is imaged, which is passed through by the marked region during the rotation of the machine component, wherein the active region comprises only a portion of the total number of pixels of the video camera, to increase the frame rate correspondingly.

A stroboscope with an integral optical reflective sensor, which can be removable or fixed, contains a light emitting source, a light sensitive receiver, a pulse conditioning circuit, a stroboscope circuit, a blanking circuit, and a stroboscope light source. The light emitting source projects a light beam to a reflective target. The reflected light beam from the reflective target is detected by the light sensitive receiver. The pulse conditioning circuit generates a set of electrical pulses coincident with the reflected light beam which are sent to the stroboscope circuit. Depending on the signal received by the stroboscope circuit, the stroboscope light source is triggered. The blanking circuit prevents false triggering of the stroboscope light source by introducing a time delay. The time delay is applied when the stroboscope light source is switched on and for a finite time after the stroboscope light source is switch off.

A method of using an imaging system including a focal plane with one or more detectors, a lens optically coupled to the focal plane, a transparent plate optically coupled to the focal plane and lens, and an actuator coupled to the transparent plate, includes receiving, at a first area of the focal plane through the lens, light from an object at a first time. The imaging system is located in a first position relative to the object at the first time. The method also includes causing the actuator to move the transparent plate in response to movement of the imaging system relative to the object and receiving, at the first area of the focal plane through the lens, light from the object at a second time. The imaging system is located in a second position relative to the object at the second time.

A method of using an imaging system including a focal plane with one or more detectors, a lens optically coupled to the focal plane, a transparent plate optically coupled to the focal plane and lens, and an actuator coupled to the transparent plate, includes receiving, at a first area of the focal plane through the lens, light from an object at a first time. The imaging system is located in a first position relative to the object at the first time. The method also includes causing the actuator to move the transparent plate in response to movement of the imaging system relative to the object and receiving, at the first area of the focal plane through the lens, light from the object at a second time. The imaging system is located in a second position relative to the object at the second time.

An imaging system includes a body, a stage coupled to the body, and a focal plane array including one or more detectors and coupled to the stage. The imaging system also includes a lens assembly including an objective lens and a rear lens group. The lens assembly is coupled to the body and optically coupled to the focal plane. The imaging system further includes a transparent plate coupled to the body and optically coupled to the objective lens and the focal plane array. The transparent plate is disposed between the objective lens and the focal plane array. Additionally, the imaging system includes an actuator coupled to the transparent plate and configured to rotate the transparent plate relative to an optical axis of the imaging system.