overview
The wireless brake force measurement system PRODAT BKM-W allows measurement of braking forces in rail trains.
For this purpose brake pads of disc brakes are switched. The sensors are inserted into the break system. For block breaks, no change of braking blocks is necessary, the sensor is inserted in between wheel and brake.
Measurement data is digitized directly in the sensor, signal errors due to communication channel can therefore be canceled out.
The wireless brake force sensors are an application of PRODATs SeNet framework – a toolbox and communication system for wireless sensor networks focusing on the railway sector. Sensors of any kind can be integrated and evaluated. Therefore additional measurement of brake pressure or switching signals is possible and has been used already.
In comparison to existing systems on the market the wireless data transmission offers a cost and work time optimized solution for brake testing.
Failures due to cable wear and tear are reduced, expensive measurement cables are not needed. The typical knots occurring when the number of cables increases and they often move is not existent anymore.
The system either allows the stand alone mode or by using gateway nodes an integration in already existing test systems.
The wireless brake force sensors are equipped with an internal power supply and allow continuous measurements of max. 10h. The communication distance in the free field is around 80m, in the typical working environment with metallic surrounding distance up to 20m can be reached. If repeater nodes are used, this distances can be increased.
Application types
PRODATs brake force measurement systems can be delivered in two basic types:
- PRODAT BKM - cable based brake force measurement
- PRODAT BKM-W - wireless brake force measurement
This base systems are usually customized to the new customer requirements.
Advantages
- Analog to Digitial conversion of measurement data directly in the sensor
- Very good calibration behavior
- Brake force tests with out the need to drive on a track
- The rail car can be used for other work and tests while measuring brake forces
- No expensive measurement cables needed which are subject to wear and tear
- No cable knots, very fast assembly
Examples
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