摘要:
A method of cooling a medical imaging system that includes a gantry is provided. The method includes supplying air to the gantry. The supplied air is conditioned to reduce variation of the temperature within the gantry. After the air is conditioned it is channeled throughout the gantry to a plurality of heat producing electronic devices within the gantry.
摘要:
A technique is provided for wirelessly tracking valuable assets during transit via a tracking system. The tracking system includes an event sensor for generating a trigger signal upon sensing an event and a position sensing device for receiving positional information of an asset being tracked. The tracking system also includes a communication device for communicating a date, a time and received positional information to one or more monitoring stations upon being triggered by the trigger signal. The one or more monitoring stations process the information received from the tracking system to determine if the event is expected or an anomaly via an anomaly detection algorithm.
摘要:
Systems and methods for cooling electronic components that are rotatable about an axis are provided. The system includes a stationary portion, a rotatable portion, and a component cooling system. The stationary portion has a bore there through. The rotatable portion is rotatably coupled to the stationary portion. The rotatable portion includes an imaging detector and an associated electronic component. The component cooling system is positioned at least partially within the stationary portion and configured to channel a curtain of conditioned air to the electronic component.
摘要:
A method and system for variable speed fan control for thermal management of a device includes disposing a first temperature sensor proximate a variable speed fan to measure an air temperature of inlet air Tair that cools the device by convection air flow. A controller is configured to compensate for changes in Tair by varying a convection coefficient (h) which is a strong function of air velocity to maintain the product of h*ΔT at a constant value, wherein ΔT is a temperature differential between the device (TAD) minus Tair. Thus, h is varied by varying air velocity by varying a speed of the variable speed fan.
摘要翻译:一种用于设备的热管理的变速风扇控制的方法和系统包括将靠近变速风扇的第一温度传感器设置为测量通过对流空气来冷却设备的入口空气T空气的空气温度 流。 控制器被配置为通过改变作为空气速度的强函数的对流系数(h)来补偿空气中的变化,以将h * DeltaT的积保持在恒定值,其中DeltaT是 设备(T SUB AD)之间的温差减去空气 SUB>。 因此,通过改变变速风扇的速度来改变空气速度h。
摘要:
A pliers-type pipe or tube cutter includes first and second members pivotably movable with respect to one another. At least one adjustable cutting wheel is supported on one of the opposing jaw portions to be operably engagable with a tube or pipe to be cut. In addition, at least one cleaning element is supported on one of the opposing jaw portions for operable engagement with an exterior surface of the tube or pipe during the cutting process.
摘要:
Systems and methods for monitoring the efficiency characteristics and performance statistics of an air compressor system, comprising, an air compressor system, an air compressor system monitoring module operable for receiving input data and sending results data, the monitoring module having an analyzer for analyzing input data relating to air compressor system operation and generating output data relating to air compressor system performance and efficiency, and a communications network operably coupled to the air compressor system and air compressor system monitoring module, the communications network operable for acquiring the air compressor system data and for communicating the air compressor system data to the air compressor system monitoring module.
摘要:
A low-jitter phase-locked loop (PLL) circuit includes a reference signal generator and a PLL. The reference signal generator is configured to quadruple a frequency of a first reference signal to produce a second reference signal. The PLL includes a filter coupled in series with a voltage controlled oscillator (VCO), and a frequency phase detector configured to generate a first error signal based on a frequency difference between the second reference signal and a first divided VCO output signal. The PLL further includes a phase detector configured to generate a second error signal based on a phase difference between the second reference signal and a second divided VCO output signal at each rising and falling transition of the second reference signal. The PLL further includes a multiplexer configured for initially receiving the first error signal until the frequencies of the first divided VCO output signal feedback signal and the second reference signal match, and thereafter for receiving the second error signal, and to provide the first or second error signal to the filter.
摘要:
The present invention is a joint assembly that enables the rapid and precise self-alignment of two portions of a pool cue. The joint assembly comprises a bushing and a pin, one coupled to each of the two cue portions, the bushing and the pin coupling in the normal male-female fashion to connect the pool cue portions. The bushing has a closed base to prevent glue from leaking into the bushing when the bushing is fastened to a portion of the pool cue. The interior of the bushing comprises a threaded region proximate to the closed base with a tapered portion where the threaded region meets a smooth bore region, and an angled entrance region between the bore region and the opening of the bushing. The pin is fastened to another portion of the pool cue and comprises a threaded head portion to engage the threaded region of the bushing.
摘要:
A performance measurement tool is developed to measure performance of a terminal server servicing multiple Clients who operate on remote systems in a farm of multiple PC's. Test scripts to simulate actual operating conditions are run on each PC Client-User over a sequence of time which varies the number of concurrently active PC Client-Users from a small number of Users to a vary large number of current Users. During this test period, a record is kept of designated simulated-user-initiated actions such as log-on times, time to open various application programs, and character entries thus to determine acceptable operating configurations.
摘要:
A strain relief for a plurality of cables comprises two portions which act together to clamp the cables in position without the use of tools in a manner which is intuitive to a user. The first portion has hook elements projecting from a surface, each hook element being for retention of a cable. A second set of hook elements is also provided. A second portion has a cable receiving opening corresponding to the cable receiving opening in the first portion. The second portion latches to the first portion, so as to clamp the cables.