An optical fiber inclination measurement apparatus and a differential inclination measurement system are provided, which is related to the field of monitoring technology. The apparatus includes a supporting mechanism with a base and a base frame, a swinging mechanism with a pendulum, a cycloid, and a first reflective film is disposed on the pendulum. The measurement mechanism includes a first optical fiber, and an end surface of the first optical fiber is disposed opposite to the first reflective film. During an earthquake generating process, a landform changes and the pendulum swings, resulting in changes in displacement. The end surface of the first optical fiber together with the first reflective film form a Fabry-Perot cavity. The cavity length of the Fabry-Perot cavity changes before and after the landform deforms, and an angle of inclination is equal to a value obtained by dividing the cavity length variation of the Fabry-Perot cavity by the pendulum length.

An optical fiber inclination measurement apparatus and a differential inclination measurement system are provided, which is related to the field of monitoring technology. The apparatus includes a supporting mechanism with a base and a base frame, a swinging mechanism with a pendulum, a cycloid, and a first reflective film is disposed on the pendulum. The measurement mechanism includes a first optical fiber, and an end surface of the first optical fiber is disposed opposite to the first reflective film. During an earthquake generating process, a landform changes and the pendulum swings, resulting in changes in displacement. The end surface of the first optical fiber together with the first reflective film form a Fabry-Perot cavity. The cavity length of the Fabry-Perot cavity changes before and after the landform deforms, and an angle of inclination is equal to a value obtained by dividing the cavity length variation of the Fabry-Perot cavity by the pendulum length.

The present invention relates to a method for alignment, a casing (12) and an alignment system (100) for calculating an alignment dataset (ADS) for alignment of a constructive component (P), in particular a formwork panel, comprising:—An attachment unit (10), which is configured to be non-permanently attached at the constructive component (P) and which is further configured to engage with a casing (12);—the casing (12), which cases:—an electronic accelerometer unit (14) and—a pendulum unit (16) being attached at a bottom part of the electronic accelerometer unit (14) so that the pendulum unit (16) can swing with two degrees of freedom around a pivot point, and wherein at the bottom part of the pendulum support structure (165), a laser emitter (164) is attached which is configured to emit a laser beam—a receiver unit (18), mounted at a base plate (20) and which is configured to receive the laser beam spatially resolved;—a processing unit (22) for calculating the alignment dataset (ADS), wherein the processing unit (22) is in data connection with the receiver unit (18) and with the electronic accelerometer unit (14); and—an output device (24) for providing the alignment dataset (ADS).

The present invention relates to a method for alignment, a casing (12) and an alignment system (100) for calculating an alignment dataset (ADS) for alignment of a constructive component (P), in particular a formwork panel, comprising:—An attachment unit (10), which is configured to be non-permanently attached at the constructive component (P) and which is further configured to engage with a casing (12);—the casing (12), which cases:—an electronic accelerometer unit (14) and—a pendulum unit (16) being attached at a bottom part of the electronic accelerometer unit (14) so that the pendulum unit (16) can swing with two degrees of freedom around a pivot point, and wherein at the bottom part of the pendulum support structure (165), a laser emitter (164) is attached which is configured to emit a laser beam—a receiver unit (18), mounted at a base plate (20) and which is configured to receive the laser beam spatially resolved;—a processing unit (22) for calculating the alignment dataset (ADS), wherein the processing unit (22) is in data connection with the receiver unit (18) and with the electronic accelerometer unit (14); and—an output device (24) for providing the alignment dataset (ADS).

An effective inexpensive, compact and easy-to-use self-leveling laser level capable of projecting at least two laser beams at any desired angle dialed on a 360-degree format.

A tilt sensor includes a one-way rotational drive configured to translate rotational motion of an input shaft in a first rotational direction about a first axis of the input shaft and in a second rotational direction about the first axis into rotational movement in a first rotational direction about a second axis of an output shaft. The tilt sensor further includes a pendulum coupled to the input shaft. The pendulum is configured to rotate the input shaft in the first rotational direction or the second rotational direction responsive to a tilt motion of the tilt sensor. The tilt sensor further includes a motion meter coupled to the output shaft. The motion meter is configured to display a measure of total tilt motion of the tilt sensor.

A tilt sensor includes a one-way rotational drive configured to translate rotational motion of an input shaft in a first rotational direction about a first axis of the input shaft and in a second rotational direction about the first axis into rotational movement in a first rotational direction about a second axis of an output shaft. The tilt sensor further includes a pendulum coupled to the input shaft. The pendulum is configured to rotate the input shaft in the first rotational direction or the second rotational direction responsive to a tilt motion of the tilt sensor. The tilt sensor further includes a motion meter coupled to the output shaft. The motion meter is configured to display a measure of total tilt motion of the tilt sensor.

An optical fiber inclination measurement apparatus and a differential inclination measurement system are provided, which is related to the field of monitoring technology. The apparatus includes a supporting mechanism with a base and a base frame, a swinging mechanism with a pendulum, a cycloid, and a first reflective film is disposed on the pendulum. The measurement mechanism includes a first optical fiber, and an end surface of the first optical fiber is disposed opposite to the first reflective film. During an earthquake generating process, a landform changes and the pendulum swings, resulting in changes in displacement. The end surface of the first optical fiber together with the first reflective film form a Fabry-Perot cavity. The cavity length of the Fabry-Perot cavity changes before and after the landform deforms, and an angle of inclination is equal to a value obtained by dividing the cavity length variation of the Fabry-Perot cavity by the pendulum length.

An optical fiber inclination measurement apparatus and a differential inclination measurement system are provided, which is related to the field of monitoring technology. The apparatus includes a supporting mechanism with a base and a base frame, a swinging mechanism with a pendulum, a cycloid, and a first reflective film is disposed on the pendulum. The measurement mechanism includes a first optical fiber, and an end surface of the first optical fiber is disposed opposite to the first reflective film. During an earthquake generating process, a landform changes and the pendulum swings, resulting in changes in displacement. The end surface of the first optical fiber together with the first reflective film form a Fabry-Perot cavity. The cavity length of the Fabry-Perot cavity changes before and after the landform deforms, and an angle of inclination is equal to a value obtained by dividing the cavity length variation of the Fabry-Perot cavity by the pendulum length.

A top mounted column placement element includes a plumb bob hanging element to allow a plumb bob to hang from the top mounted column placement element and identify a corresponding portion of a bottom mounted column placement element. The top mounted column placement element defines a column perimeter. The bottom mounted column placement element also defines a column perimeter. Once the top mounted column placement portion and bottom mounted column placement element are in place, the column can be placed and set to conform to both defined column perimeters, ensuring the column is properly positioned.