Civil engineering

CIVIL ENGINEERING / MONITORING OF BRIDGES

Subject:

The deformation of a highway bridge must be continuously monitored, not only during construction but also afterwards, when the bridge is put into service.

 

Measuring task:

In order to get significant values regarding the deformation of the bridge, several points on the bridge must be monitored simultaneously. 

DAM MONITORING

Subject:

The requirements regarding long term monitoring of dams are continuously increasing. Where it was enough earlier to carry out periodic measurements, today more and more permanent monitoring is required.

 

Measuring task:

The changes in inclination in both directions (mountain <-> mountain and water <-> air) of a dam shall be monitored continuously.

MONITORING OF A WATER INTAKE TOWER AT A DAM

Subject:

The stability of a water intake tower is critical to the safety of a dam. The operator of the dam therefore requests continuous monitoring of the tower’s inclination.

 

Measuring task / Goal:

The inclination of the water intake tower, that is its change in attitude, is to be monitored and registered continuously. The inclination sensor is to be mounted stationary, and must have excellent zero-point stability. The measuring values are to be registered and evaluated in the central station of the dam at a distance of about 500 m

MONITORING OF 6 TOWERS AT A DOUBLE SLUICE

Subject:

The sluices are over 100 years old and consist of two parallel sluices. The vertical gates put a heavy strain on the six towers, which is the reason why continuous monitoring is required.

 

Measuring task:

Each of the six towers should be permanently monitored with suitable inclination sensors along the X- and Y-planes. The measuring values should be transmitted online to the local water authority, thus facilitating to alarm in a timely fashion.

CIVIL ENGINEERING / MONITORING OF VERTICAL MOVEMENTS IN NATURAL GROUND

Subject / Measuring task

When excavating tunnels passing under e.g. existing railway installations, or roads where several owners are involved, the question of liability is raised regarding potential damage done to these structures. 

The owners then often ask for a permanent monitoring of the site to get early warnings as well as proof. 

MEASURING OF THE INCLINATION OF THE ROAD SURFACE

Subject:

Roads are cambered in the middle to ensure a proper drain of the rainwater. The inclination of this camber must be within certain tolerances to guarantee a safe driving.

 

Measuring task:

The inclination of the road must be measured regularly during the placement of the road surface to ensure that the inclination remains within the tolerances. The measurements must be made by road workers at various temperatures (summer and hot tar) and even at insufficient light conditions (evening).

CONTINUOUS MONITORING OF AN OBJECT, WHICH IS EXPOSED TO STRONG TEMPERATURE CHANGES

Subject:

On a radar installation which is exposed to significant temperature changes as well as to direct sunlight, precise, reliable and continuous inclination measurements should be carried out. 

All high-precision instruments are sensitive to temperature changes. Significant temperature changes inhibit precision measurements and can even prevent them.

 

Measuring task:

Precise and continuous monitoring of the inclination of the base of the radar station. 

MONITORING OF A HISTORICAL BUILDING IN KOREA

Subject:

An old and historically significant wooden building in the center of Seoul shall be preserved despite aggressive environmental influences, like the exhaust gases from cars.

 

Measuring task:

The building shall be continuously monitored with inclination sensors.

MONITORING OF A HIGH RACK WAREHOUSE / Part 1

Subject:

Automatic high rack warehouses can reach very large dimensions:

80 m length, 45 m width and 30 m height are no exceptions. Despite these dimensions and despite the high speed of the transportation system, each bin must be placed very accurately at its predefined location. In order to reach such accuracy, the alignment of the racks is of key importance. The exact verticality of each rack has therefore to be ensured. Already smallest deviations will change the distance to the transportation system and could cause errors. The bins could get blocked and get damaged or even fall. 

 

Measuring task / Goal:

The verticality of each rack in the high rack warehouse must be monitored permanently.

POSITIONING OF A HEAVY PART WITH AN OVERHEAD CRANE

Subject:

In a large production hall, a heavy part shall be positioned in the correct height with an overhead crane in order to allow a stress-free mounting. First tests show that the building is not stable enough: Depending on the weight of the part, vertical offsets are measured which are larger than the required positioning 

accuracy.

 

Measuring task: 

In order to achieve the required accuracy, the bending of thebuilding respectively of the overhead crane should be measured.From these values, the vertical correction of the crane should be calculated.

ZEROTRONIC SENSORS IN STRONG MAGNETIC FIELDS

Subject:

A customer would like to measure his machine despite the presence of strong magnetic fields.

 

Measuring task:

The user of a particle accelerator would like to accurately measure and adjust the parts of his accelerator. The strong magnetic fields allow only the use of non-magnetic material and of instruments which are not sensitive to heavy magnetic fields. 

MONITORING OF SYNCHROTRONS

Measuring task / Goal:

All girders have to be monitored continously. In order to achieve a high precision with this measuring task, an excellent long term stability of the sensors is decisive.

MONITORING OF AN OFFSHORE WIND TURBINE TRIPOD DURING PLACEMENT AND ANCHORING IN THE SEA

Subject:

An offshore wind turbine requires a stable and exactly horizontal base. To achieve this, the tripod, on which afterwards the wind turbine will be mounted, must be monitored during the anchoring process.

 

Measuring task:

The position of the Tripod must be monitored during the anchoring rocess with inclination sensors mounted at the upper end of the Tripod. The sensors must withstand the high accelerations occurring during the ramming process. The measured data must be transmitted wireless to the boat controlling the whole process.

ALIGNMENT OF SOLAR PANELS

Subject:

Solar panels must be perfectly adjusted to the sun to ensure best possible performance.

 

Measuring task:

The inclination of each single solar panel must be verified periodically. A measuring range of up to ±60° is required.

MAPPING A GOLF GREEN

Measuring task / Goal:

Mapping of the inclinations on the Green areas of a Golf course.

Some golf courses in England measure the flatness of the „Green“ in a simple way. A special vehicle has been constructed, on which two CLINOTRONIC are mounted in a right angles to each other.

 

Both are connected to a small printer. The green is checked according to a pre-set pattern and at each measuring point, after a short stop, the inclination angles determined in the two directions are recorded and printed.