International Business Machines Corporation

Carrier Corporation

Shanghai Sansi Technology Co. Ltd.

Shanghai Sansi Electronics Engineering Co., Ltd.

Jiashan Sansi Photoelectric Technology Co., Ltd

Xin Hao Cheng

Jian Ding

Guo Qiang Hu

Jun Chi Yan

Jianbin Tang

Jun Song Wang

Yong Hua Lin

Bo Yang

Li Jun Mei

Yu Fen Yuan

Guoqiang Hu

Yuling Shi

Jin Liu

HongYi Li

Yilin Zhang

Haijun Li

Dongsheng Yang

JunJie Ji

Shikang Zhou

Mengsheng Wang

Yuexia Chen

The utility model relates to a noise reduction device for an outlet side of a fan, and a heat exchange system including the noise reduction device. The noise reduction device includes: a connecting portion configured to be connected with at least a part of the air duct cover, and form an accommodation space communicating with an airflow on the outlet side via at least one of the through holes; and at least one first chamber and/or at least one second chamber, the first chamber being located in the accommodation space and filled with a sound-absorbing material, and the second chamber being located in the accommodation space and configured as a resonant noise-reduction cavity. The utility model is easy to manufacture, install and maintain, the noise reduction effect is obvious, and therefore the utility model has significant practicability.

Noise reduction device for outlet side of fan and heat exchange system including the same

An oil separator and an air conditioning system provided with the oil separator are disclosed by the present disclosure. The oil separator comprises: an inlet () configured to receive a refrigerant; a duct () through which the refrigerant flows, the duct having a circumferential wall and comprising: a first section comprising a first muffler adjacent to the inlet, the first muffler () comprising a chamber () defined by a first wall () of the first section and designed to have a length dimension (L) in a length direction of the duct and a depth dimension (H) intersecting the length dimension; and a second section downstream of the first section, a second wall () of the second section being provided with a second muffler (); and an oil separation assembly () through which the refrigerant passing through the duct passes. The present disclosure has a simple and reliable structure and is easy to implement.

Oil separator with integrated muffler

The present invention relates to a virtual machine, and specifically discloses a method and apparatus for creating a software performance testing environment based on a virtual machine, wherein the method comprises: in response to obtaining a hard disk read/write request triggered by a virtual CPU of the virtual machine, notifying a virtual CPU scheduler to record a CPU time quota t1 already consumed by the virtual CPU in a current CPU schedule period; in response to detecting completion of hard disk read/write processing corresponding to the hard disk read/write request, predicting a hard disk read/write latency t corresponding to the hard disk read/write request in a target environment; notifying the virtual CPU scheduler to determine a CPU time quota already consumed by the virtual CPU in the current CPU schedule period based on the recorded CPU time quota t1 and the hard disk read/write latency t; and adjusting a system clock of the virtual machine based on the determined CPU time quota already consumed by the virtual CPU in the current CPU schedule period. The method according to the embodiments of the present invention may obtain, in the created software performance testing environment, a software performance testing result consistent with the result obtained under a highly configured server in the target environment.

Creating a software performance testing environment on a virtual machine system

A method for creating a software performance testing environment based on a virtual machine, wherein the method comprises: in response to obtaining a hard disk read/write request triggered by a virtual CPU of the virtual machine, notifying a virtual CPU scheduler to record a CPU time quota talready consumed by the virtual CPU in a current CPU schedule period; in response to detecting completion of hard disk read/write processing corresponding to the hard disk read/write request, predicting a hard disk read/write latency t corresponding to the hard disk read/write request in a target environment; notifying the virtual CPU scheduler to determine a CPU time quota already consumed by the virtual CPU in the current CPU schedule period based on the recorded CPU time quota tand the hard disk read/write latency t; and adjusting a system clock of the virtual machine based on the determined CPU time quota already consumed by the virtual CPU in the current CPU schedule period. The method may obtain, in the created software performance testing environment, a software performance testing result consistent with the result obtained under a highly configured server in the target environment.

The present invention relates to a virtual machine, and specifically discloses a method and apparatus for creating a software performance testing environment based on a virtual machine, wherein the method comprises: in response to obtaining a hard disk read/write request triggered by a virtual CPU of the virtual machine, notifying a virtual CPU scheduler to record a CPU time quota talready consumed by the virtual CPU in a current CPU schedule period; in response to detecting completion of hard disk read/write processing corresponding to the hard disk read/write request, predicting a hard disk read/write latency t corresponding to the hard disk read/write request in a target environment; notifying the virtual CPU scheduler to determine a CPU time quota already consumed by the virtual CPU in the current CPU schedule period based on the recorded CPU time quota tand the hard disk read/write latency t; and adjusting a system clock of the virtual machine based on the determined CPU time quota already consumed by the virtual CPU in the current CPU schedule period. The method according to the embodiments of the present invention may obtain, in the created software performance testing environment, a software performance testing result consistent with the result obtained under a highly configured server in the target environment.

A method for signal modulation includes determining at least one guard band between at least two continuous available sub-bands among multiple available sub-bands that can be used by a communication entity and are discrete; and using the at least one guard band in signal modulation for the communication entity.

Signal modulation using guard band determination for improved frequency spectrum efficiency

A method of detecting an abnormal driving includes receiving a RF signal transmitted from a vehicle in front; performing digital down conversion on the RF signal to obtain a baseband digital signal; performing frequency shift detection on the baseband digital signal to obtain frequency shift between the received RF signal and the RF signal transmitted from the vehicle in front; and determining that the abnormal driving condition in front exists response to determining that the frequency shift has reached a set threshold.

Detecting an abnormal driving condition

A dustproof lens for an LED road lamp has an incident surface and an exit surface. The exit surface is flat. The incident surface is saddle-shaped and has a section in a shape of a concave curve along a road direction and in a shape of a convex curve vertically to the road direction. A lens module thereof has the dustproof lenses jointed with each other and has an integrally flat exit plane. The dustproof lens and its module, while meeting requirements in distributing lights for road lighting, adopt a flat surface for emitting lights, in such a manner that the lens is protected from dusts piled up thereon, can be cleaned simply, and is better fit for using. By accomplishing modularization of the lens module in production and assembly, a productive efficiency of lamps is greatly improved.

Dustproof lens and its module for LED road lamp

Growing community of inventors

Shanghai, China

Xin Hao Cheng