公开(公告)号：US10710870B2

公开(公告)日：2020-07-14

申请号：US15370919

申请日：2016-12-06

Applicant: Stichting VU-VUMC ,  FOM-Nikhef

Inventor： Eric Hennes ,  Alessandro Bertolini ,  Johannes Franciscus Van Den Brand

IPC: G01P15/13 ,  G01P15/125 ,  B81B3/00 ,  G01P15/08 ,  G01P15/09

Abstract: A MEMS sensor comprising preloaded suspension springs and a method for mechanically preloading suspension springs of a MEMS sensor are described. The MEMS sensor comprises a MEMS support structure; a plurality of suspension springs connected to the support structure; and, a proof mass flexibly suspended by the suspension springs; wherein at least one of the suspension springs is mechanically preloaded with a compressive force for reducing the natural frequency of said proof mass.

公开(公告)号：US11267694B2

公开(公告)日：2022-03-08

申请号：US16928851

申请日：2020-07-14

Applicant: Stichting VU-VUMC ,  FOM-Nikhef

Inventor： Eric Hennes ,  Alessandro Bertolini ,  Johannes Franciscus Van Den Brand

IPC: B81B3/00 ,  G01P15/13 ,  G01P15/08 ,  G01P15/09 ,  G01P15/125

Abstract: A MEMS sensor comprising preloaded suspension springs and a method for mechanically preloading suspension springs of a MEMS sensor are described. The MEMS sensor comprises a MEMS support structure; a plurality of suspension springs connected to said support structure; and, a proof mass flexibly suspended by said suspension springs; wherein at least one of said suspension springs is mechanically preloaded with a compressive force for reducing the natural frequency of said proof mass.

公开(公告)号：US10660068B2

公开(公告)日：2020-05-19

申请号：US14896610

申请日：2014-06-06

Applicant: Stichting VU-VUMC ,  FOM-Nikhef

Inventor： Henk Jan Bulten ,  Johannes Franciscus Josephina Van Den Brand

IPC: H04W72/00 ,  H04W72/04 ,  H04W52/02 ,  H04B7/26 ,  H04W84/18

Abstract: A method for managing communication in a wireless mesh network comprising a plurality of wireless nodes and a wireless node for use in such network are described, wherein said method may comprise: providing a time slot schedule (frame), preferably a TDMA time slot schedule (frame), comprising one or more time slots, including a transmission time slot enabling a node to transmit a broadcast message, a reception time slot enabling a node to receive a broadcast message from one or more other nodes; and/or a sleep time slot for configuring said node in an idle state; and, assigning said time slots to nodes in said network on the basis of the position of said nodes in said network.