ZF develops sensors to meet e-bike demands

As e-bikes become more commonplace on roads, manufacturers are continually launching new innovations and technical advancements. One is manufacturer TQ-Systems which has technically revolutionised the market with its TQ HPR120S-Motor, says ZF. An important component in this model is the e-bike sensor from ZF used for the measurement of the current riding speed.

The ZF speed sensor used in the TQ HPR120S-Motor delivers 18 pulses per rotation with 18-fold coding.  This results in a much higher resolution as with standard sensors which in practice leads to a finer, more direct appeal of the e-bike drive, explains ZF – especially at lower speed (e.g. for hill starts). The speed sensor is mounted on the back wheel which provides the system with precise information on the current speed. In combination with a torque sensor it enables a better alignment of the overall system. The sensor is tamper-resistant, says ZF, and always submits precise results.

The e-bike sensor is based on Hall technology and allows the customer to decide if the sensor should have a connector or a cable.  The sensors need a continuous power supply of 4.5 to 20V DC and measures frequencies between 1 and 2,500Hz. They are designed for operation over a temperature range from -20 to +100 degrees C and fulfill the requirements of IP67.

Originally, the ZF sensor has been developed for anti-lock braking system (ABS) applications. In addition to e-bikes, e-scooters are a suitable target application for this small, efficient sensor, says ZF.

Founded in 1915, ZF has evolved from a supplier specialising in aviation technology to one supplying systems for passenger cars, commercial vehicles and industrial technology, enabling the next generation of mobility. The company offers integrated solutions for vehicle manufacturers, mobility providers and start-up companies in the fields of transportation and mobility. ZF continually enhances its digital connectivity and automation performance levels to allow vehicles to see, think and act.

 The company has a global workforce of 149,000 with approximately 230 locations in 40 countries. ZF invests over six percent of its sales in research and development annually.


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