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Distance

Measuring distance, often also called displacement describes measuring the distance between 2 points. This distance is defined in the measuring technique by the distance of the sensor from the target. Thus, the distance measurement can also be designated as displacement, distance or position measurement. Displacement measurements in geometric measuring technology can be found in almost all application areas. Different criteria are included for the selection of the appropriate sensor for displacement measurements. The frequency of the distance change can be quasi static or high frequency and determines the measuring speed of the sensor. Contacting / non-contact Measurement range (displacement change in mm µm) Accuracy of the respective displacement position

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Sensor systems in the car

The use of sensors in modern cars is today indispensable. Everyone is familiar with the application of ABS systems where sensors measure the wheel speed and derive control parameters from it for the brakes.

Automotive

Many applications can be assigned to the automotive area. They range from automobile manufacturing itself to the various automotive suppliers. Quality assurance or automation are frequent application areas. ...

Measuring system for strip position monitoring in a coating tank

In the electrolytic refinement of thin sheets electrical losses are minimised by a small distance between strip and anode. This requires exact strip guidance. Before the strip enters the coating tank it ...

Experimental tests on a drop impact tester

In the automotive industry manufacturers go to great lengths to improve the passive safety of all vehicles in a collision. The so-called crash absorbers join the fenders with the longitudinal bearers ...

Active suspension cylinder

Modern mobile cranes are always employed when heavy loads must be lifted quickly and at various locations. They are used, for example, in the recovery of broken down trucks. The field of operation is not ...

Precise positioning of a surgical microscope

Surgical procedures require a perfect view of the operating area. Here, the surgeon is often supported by a surgical microscope. To enable the surgeon to best position the microscope and to give the surgical ...

Overhead conveyor distance

Overhead conveyors which move automatically through the production process on a rail are used for the transportation of many components. A certain minimum distance is required so that components do not ...

Engagement length control in high performance screwdrivers

Industrial screwing in automated production systems is carried out by automatic screwdrivers. Apart from the torque, the engagement length is the most important criterion for the quality of the screwing ...

Piston position in hydraulic valves

In hydraulic drives proportional and servo valves control the volume flow of hydraulic oil. In order that an exact dosage, and therefore a controlled movement is possible, displacement sensors are integrated ...

On-line inspection of the dimensions of sand-lime bricks

After pressing the sand-lime brick blanks are placed onto a hardening carriage. Even smallest changes in the mixture, moisture, or in the pressing force lead to undefined growth of the bricks and make ...

Measurement system for the flat setting on carding machines

The setting of the distance between the drum and the flat is crucial for carding quality of fibre, e.g. wool. Investigations have shown that manual gap settings with the gauge to the left and right on ...

Dosing systems for high-viscosity glues

In the automotive industry piston dosing systems are used for glueing car windscreens and windows. These dosing systems supply the highviscosity glue to the application gun in an exactly controllable way. ...

Jib lengths of mobile cranes

The current jib length is important when calculating the torque of the load on the crane. This length is measured with an integrated draw-wire sensor. This simple and telescopic measuring principle makes ...

Crane support distance

A truck-mounted crane is frequently the better solution in many cases where loads have to be lifted. As a mobile solution, safety also plays an important role here. Therefore a load torque limiter controls ...

Exact crusher gap adjustment in rotary crushers

Rotary crushers for quarries or ore mines can grind up to 3500 t of material to the desired grain size in one hour. For this purpose an eccentric bearing bush generates a rotary-oscillating movement of ...

Displacement sensor for washing machines

When the washing machine is loaded, the displacement sensor DRA measures how much the outer drum drops. It also measures the drum’s deflection during spin-drying. Due to the inductive measurement principle, ...

Strip width when trimming metal strips

As different widths are frequently required during the production of metal strips, the strips must be trimmed after the rolling process and both the cutters must be movable electrically. The distance is ...

Lip Gap Measuring in Paper Manufacture

In paper manufacture the lip gap at the headbox determines the thickness of the paper. Paper machines usually have a lip width between 4 and 6 metres. The measuring task is a constantly monitoring the ...

Tester for pneumatic actuator

So-called muscles are developed as alternatives to hydraulic cylinders. The hose made of rubber contracts when it is filled with compressed air. An in-house tester has been developed for testing this muscle. ...

Control and monitoring of the production sequence in a refinery

In the refinery crude oil is cracked by distillation to give petroleum, kerosene and diesel oil. In the fractional distillation column the crude oil is heated with superheated steam. The vapors and liquids ...

Measurement of the tilt angle on tilting trains

Through the application of tilting trains existing track can be traveled at higher speeds and consequently used more efficiently. Displacement sensors fitted to the front end of the vehicle determine the ...

Clutch wear in racing cars

Racing cars are stressed to the limits of their capabilities. It is not without reason that pioneering technologies are often first tested in racing cars before they find their way into mass production. ...

Checking the accuracy of robot trajectories

The measurement of the trajectory accuracy or its reproducibility is carried out along a diagonal straight line in space. The robot moves the measuring head, which is fitted with sensors, along a steel ...

Position checking on robots

The introduction of the international standard ISO 9283 demands new non-contacting measurement methods. The measurement system for the position measurement is composed of a measurement cube with a defined ...

Release of satellites into space

order to be able to launch a satellite from the Areane rocket unobstructed into space, the nose cone section, together with the side shield, have to be separated from the main rocket immediately before ...

Release of satellites into space

If satellites are put into the Earth’s orbit, it is necessary to separate the cone of the rocket from the satellites of the rocket itself. After unlatching the retainer for the nosecones, spring assemblies ...

Displacement measurement on slag transporter

Draw-wire sensors are used to reduce the standstill time of slag transporters during the loading and unloading. They are installed on the tipping cylinder and the support cylinder. In this way, the signal ...

Test facility for shock absorbers

After production the shock absorbers pass through a quality inspection facility on a transport system. Here, they are inspected for dimensional conformance, material faults and the presence of certain ...

Camber / toe angle

The camber or the toe angle is often adjusted during the service life of a passenger car. It is also often necessary to check the adjustments in the development phase. A laser line is projected from the ...

Ram travel at a pill press

For the examination of cohesion in pharmaceutical mixtures under the influence of pressure non-contacting eddy-current sensors , which measure the travel of the upper in the area of the bottom dead center ...

Valve

The control piston in a valve controls the oil flow to the hydraulic cylinder. As the piston moves back and forth, drilled holes in the valve body are covered and uncovered. The piston is moved by a linear ...

Inspection of valve cones

During the automated assembly of cylinder heads, the proper seating of the valve cones is monitored with optoNCDT laser-based triangulation sensors. This prevents valves from dropping into the combustion ...

Active damping of liquid-cooled centrifuges

At certain configurations of speed, filling level and design parameters, liquid-filled industrial centrifuges tend to produce unstable running characteristics which can lead to failure of the centrifuge. ...

Low cost sensors for cylinder applications

Monitoring the movement of gas pressure or hydraulic cylinders is solved very elegantly using an eddy current sensor. This sensor is integrated in the cylinder. An aluminium ring is used as the target. ...

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CZ_Juraj_Devecka

Ing. Juraj Devečka

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+421 911 298 922
+420 381 211 060
juraj.devecka@micro-epsilon.cz
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