Described herein are new methods and systems for profiling tunnels. A method comprises moving a shuttle within a shuttle track extending between a boring apparatus (inside a tunnel) and a base station (outside the tunnel). The shuttle is equipped with a movement sensor, which records various movement parameters (e.g., linear and/or angular accelerations) while the shuttle moves within the shuttle track. These movement parameters are then transferred to a tunnel profiler (e.g., a base station) and the profile of the tunnel is determined based on these movement parameters. For example, a shuttle track can be a flexible tube (e.g., continuous or segmented) with the shuttle positioned within the tube. The shuttle can be removed from the tube or remain in the tube while the movement parameters are transferred and, in some examples, while the shuttle is recharged.

A method for increasing fail-safe operation of an industrial input/output assembly, wherein an external mechanical load that acts on the input/output assembly is determined via an acceleration sensor, where a check is performed to determine whether the load exceeds a predeterminable limit value and, if this is the case, a value of a load sum is then accordingly increased corresponding to an extent to which the value is exceeded, where the load sum is continuously compared to a maximum load value that characterizes a service life of the input/output assembly, and a maintenance message is output when the maximum load value is reached.

The information display apparatus includes a sheet display section; a mechanical mechanism that moves the display section, and switches a state of the display section between a deployment state in which a display space is formed and a non-deployment state in which the display space is not formed; a motion sensor that detects a motion of the display section; and a controller that calculates, from data of the detection performed by the motion sensor, at least motion information other than a component related to the movement of the display section that is performed by the mechanical mechanism, and determines an anomaly.

The information display apparatus includes a sheet display section; a mechanical mechanism that moves the display section, and switches a state of the display section between a deployment state in which a display space is formed and a non-deployment state in which the display space is not formed; a motion sensor that detects a motion of the display section; and a controller that calculates, from data of the detection performed by the motion sensor, at least motion information other than a component related to the movement of the display section that is performed by the mechanical mechanism, and determines an anomaly.

The present application discloses an inertial sensor comprising a proof mass, an anchor, a flexible member and several sensing electrodes. The anchor is positioned on one side of the sensing, mass block in a first axis. The flexible member is connected to the anchor point and extends along the first axis towards the proof mass to connect the proof mass, in which the several sensing electrodes are provided. In this way, the present application can effectively solve the problems of high difficulty in the production and assembly of inertial sensors and poor product reliability thereof.

The present application discloses an inertial sensor comprising a proof mass, an anchor, a flexible member and several sensing electrodes. The anchor is positioned on one side of the sensing, mass block in a first axis. The flexible member is connected to the anchor point and extends along the first axis towards the proof mass to connect the proof mass, in which the several sensing electrodes are provided. In this way, the present application can effectively solve the problems of high difficulty in the production and assembly of inertial sensors and poor product reliability thereof.

A physical quantity detection element includes a first base portion and a second base portion, a pair of vibrating beams extending between the first base portion and the second base portion, and a plurality of excitation electrodes provided in surfaces of the pair of vibrating beams. The vibrating beam includes a first region, a second region, and a third region. The first region is located between the second region and the first base portion, and the third region is located between the second region and the second base portion. The excitation electrode provided in the first region is disposed such that a distance from the first base portion is 2.5% or more and 12.3% or less of a total length of the vibrating beam, and the excitation electrode provided in the third region is disposed such that a distance from the second base portion is 2.5% or more and 12.3% or less of the total length of the vibrating beam.

The purpose of the present invention is to provide a method for manufacturing a three-dimensionally structured member which can be made by a simpler process. The method for manufacturing a three-dimensionally structured member includes shaping a flat plate-shaped base member to produce a three-dimensionally structured member having a plurality of sections that are different from one another in thickness. The manufacturing method comprises: a mask formation step for forming a mask over the whole of at least one main surface of the base member; a mask removal step for removing a part of the mask; and an etching step for etching an exposed part of the base member wherein a combination of the mask removal step and the etching step is performed on the mask and the base member that correspond to each of the plurality of sections of the three-dimensionally structured member, in the order from thinnest to the thickest of thicknesses of the three-dimensionally structured members.

A sensor system includes a sensor that is provided in a structure and detects an acceleration, a storage unit that stores installation information indicating a relationship between a direction of a gravitational acceleration and a direction of a detection axis of the sensor, and a drop determination unit that determines whether or not the sensor is dropped based on a representative value of accelerations in the direction of the detection axis detected by the sensor and a gravitational acceleration value in the direction of the detection axis specified based on the installation information.

A sensor system includes a sensor that is provided in a structure and detects an acceleration, a storage unit that stores installation information indicating a relationship between a direction of a gravitational acceleration and a direction of a detection axis of the sensor, and a drop determination unit that determines whether or not the sensor is dropped based on a representative value of accelerations in the direction of the detection axis detected by the sensor and a gravitational acceleration value in the direction of the detection axis specified based on the installation information.