Engine Velocity (Crankshaft) Sensor

Measuring the speed of engine and determine the crankshaft position (position of the pistons) for the engine management system.

Reference Mark is used to defined crankshaft position and synchronize the control unit.

Engine Phase (Camshaft) Sensor

Indicate the piston (compression or exhaust) stroke to trigger the ignition and fuel injection.

  1. Electrical connection (plug)
  2. Sensor housing
  3. Crankcase
  4. Sealing ring
  5. Permangent magnet
  6. Sensors
  7. Pulse wheel with tooth/segment (Z) and space (L)
b: Output signal

Speed Sensors for Transmission

Detect the speed of the turbine/output shaft in AT, the primary and secondary pulleys in CVT, input/driving shift in DKG, rotation direction is necessary for high-end products.

Customized design including ASIC, package,mechanical and magnetic interface due to diversity of the transmissions.

Trigger Wheel Type
Multipole Wheel Type
Differential signal btw R/C
Differential signal btw C/L
Output signal for CW
Output signal for CCW

Wheel Speed Sensors

Measure the vehicle wheels speed to controls the braking force individually at each wheel to prevents the wheels from locking up (with ABS) or from spinning (with TCS or ESP), and to calculate the speed/traveled distance.

CCW Signal
CW Signal
Stationary Signal
Self-diagnosis Signal

Acceleration Pedal Sensor

Recording the travel or the angular position of the accelerator pedal for the electronic throttle control (ETC).

E-Throttle Sensor

Responding the angle position information of the throttle valve to ECU to regulate the intake air mass for a specific air-fuel mixture.

Steering Angle Sensor

Monitor the driver’s input by continuously measuring the position and turning rate of the steering wheel and report the information to ECU, in order to control various driver-assist systems such as ESP, EPS and Active Steering together with the information from other sensors.


The passenger-car steering wheel turns through ±720° (a total of 4 complete turns), conventional angular position sensors can only measure maximum 360°, so 2 angle sensors are needed.

Axle Sensor

Two angle sensors on front/end axle record the bodywork’s tilt angle resulting from the vehicle loading, braking/acceleration for adjusting the vehicle’s headlamp range automatically, or adjusting the chassis height via active suspension.

  1. Pivot lever
  2. Shaft
  3. Housing
  4. Rotor with Magnet
  5. Stator with Sensor
  6. Magnet

  1. Bodywork mounting
  2. Axle sensor
  3. Pivot lever
  4. Connecting rod
  5. Vehicle axle

Magnetic Encoder for BLDC Motor

Measure the rotor position for current commutation in the stator to achieve high power efficiency and lower torque ripple.

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