Abstract: An energy-saving assembly for indirect heating systems includes a plurality of porous elements. Each porous element has a porous carrier which has multiple holes that go through the carrier. The porous carriers are arranged parallel to the axis of a radiant tube of the indirect heating system at a distance or adjacent and disposed of inside the radiant tube. The outer periphery of each porous element is at least partly adjacent to the inner wall of the radiant tube.

Abstract: Techniques are disclosed for early detection of fan failure in a computing device, such as a server. A management device located in the computing device or remote from the computing device can receive information about the fan duty and use the fan duty information to determine a safe fan speed below which future or imminent fan failure can be inferred. The management device can receive the current speed of the fan and compare it with the safe fan speed to determine if the fan is likely to fail, in which case the management device can direct the computing device to perform mitigation action and/or a maintenance warning can be sent. The maintenance warning can result in replacement of the failing or soon-to-fail fan.

Abstract: Techniques are disclosed for early detection of fan failure in a computing device, such as a server. A management device located in the computing device or remote from the computing device can receive information about the fan duty and use the fan duty information to determine a safe fan speed below which future or imminent fan failure can be inferred. The management device can receive the current speed of the fan and compare it with the safe fan speed to determine if the fan is likely to fail, in which case the management device can direct the computing device to perform mitigation action and/or a maintenance warning can be sent. The maintenance warning can result in replacement of the failing or soon-to-fail fan.

Abstract: Disclosed is a robot surveillance system for preventing a robot from falling down or collision by means of dynamic detection of moving object invasion. The system includes a light-emitting unit, an image capture unit, an image processing unit, a turning control unit, and a wireless transceiver unit. The image capture unit combines with an optic pattern to provide a visual module for the moving or surveillance robot. The shape of the optic pattern changes as the robot moves toward the object or pothole, and the image processing unit recognizes the detected object to be standstill, and thus controls the moving direction of the robot to effectively avoid falling or collision. Any moving object in the space is detected by the object motion detection, thereby effectively achieving the goal of spatial surveillance and security.