Shanghai United Imaging Healthcare Co., Ltd.

East China Architecture Design and Research Institute Co., Ltd.

Weidong Wang

Wentao Wu

Guobin Li

Junyu Chen

Xiangming Hou

Lingzhi Hu

Yonghong Wang

Shuangyue Zhang

Tuoyu Cao

Xinyue Zhang

Rong Zhong

Jiangbin Wu

Jiabin Wei

Zhidao Zhou

The present disclosure provides a noise reduction device. The noise reduction device may include a noise receiving component, a noise reduction component, a processing component, and a housing. The noise receiving component may be configured to receive acoustic noise information of a scanning environment where a medical device is located. The processing component may be configured to control the noise reduction component to generate sound information matching the acoustic noise information received by the noise receiving component. The housing may be configured to support the noise receiving component and the noise reduction component.

Devices, systems, and methods for noise reduction

Provided is an indoor test device for simulating a vibration pile sinking process and testing a bearing capacity thereof and a test method thereof. The indoor test device comprises a container, a soil located in the container, a vibration penetration system and a balanced vibration damping system, the vibration penetration system is vertically arranged above the soil in the container, and the balanced vibration damping system is located right above the vibration penetration system and coaxially arranged with the vibration penetration system. The indoor test device and the test method apply to researching on the vibration pile sinking process and testing the bearing capacity thereof in different types of soil, and adapts to different frequencies and different exciting forces.

Indoor test device for simulating a vibration pile sinking process and testing a bearing capacity thereof and test method thereof

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Shanghai, China

Weidong Wang