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imc Test & Measurement GmbH
Voltastraße 5
13355 Berlin (Deutschland)
Tel: +49 6172 59672-0
Fax: +49 6172 59672-222
http://www.imc-tm.de
elena.schultz@imc-tm.de

Berührungslose Drehratenerfassung am Rad ohne Stator

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With the new Dx-Speed, a convenient system for non-contact rotation rate acquisition on vehicles, CAEMAX has expanded its Dx sensor system, which won the messtec + sensor masters award in 2018. With the CAEMAX Dx-Speed, wheel slip and aquaplaning can be measured synchronously, precisely and without major effort on all four wheels. Thanks to its innovative technology, the system does not require a stator or an external reference point to measure the rotation rates. The attachment of the sensor to the rim is therefore very easy to manage and takes very little time.

The new Dx-Speed system from CAEMAX simplifies the acquisition of rotation rates on vehicle wheels due to its compact design. It is available in different designs and for all wheel types. Because of its innovative hardware and software topology, it requires no mechanical connection and no stator or external reference point. It can be mounted on the rim in just a few minutes. The housing of the CAEMAX Dx-Speed is robust and waterproof. Inside, there is a rotation rate sensor and a lightweight 14g transmitter unit. This includes the complete measurement data acquisition and digitization for up to 6 channels, as well as an integrated radio antenna. The data are transmitted at 200 Hz to the Dx receiver system inside the vehicle.

Precise measurement results for aquaplaning tests and other testing in harsh environments

Due to its simple design, the Dx-Speed is very robust and suitable for testing in harsh environments. Both on the test bench and in mobile use in difficult environmental conditions, such as moisture, mud, snow or dust, or when driving over obstacles, the Dx-Speed precisely detects every change in the rotation rate. The accuracy of the CAEMAX Dx-Speed, for example in aquaplaning tests, is typically ? 0.5 %. Optionally, the brake disc temperature can also be measured.

Synchronous acquisition of up to 4 wheels

The receiver unit of the Dx telemetry system simultaneously detects the rotation rate of up to four wheels, each with a Dx-Speed transmitter unit. The radio link between the transmitter and receiver units is largely approval-free worldwide. In addition to online monitoring of all measured values, the receiver unit can also display and record the temperature, signal strength and power supply of the transmitter unit.

Via analog outputs and a digital CAN interface, the Dx-Speed system can be easily and quickly integrated into existing measurement systems. This is particularly convenient with imc systems, which can synchronously acquire telemetric data and many other sensor signals as well as field and vehicle buses, and calculate and store them in real time. They also offer modern networking options for transferring measurement data, for example, directly to a cloud.

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