Tension and Presence Sensing Series - Hall

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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The seat belt presence sensor detects whether the seat belt buckle is latched or unlatched. The tension sensor detects the tension of the seatbelt. This sensing system helps determine the optimum airbag deployment. It is also used as an input to the electronic park brake and the unbuckled warning system. 

 

Applications:

  • Vehicle occupant safety systems
automotive-sensor-customLittelfuse vehicle sensors are designed for customer-specific applications and packaging. To learn more, contact Littelfuse.

  • Robust construction makes this sensor well suited to harsh environments

  • Non-contact, Reed and Hall Effect technology

  • Magnetically operated position sensor
  • Integrated in spring loaded seat belt buckle
  • Dual output for 1) presence and 2) tension
    1. Two logic output states (100 &400 Ohm)
    2. Ratiometric voltage output (belt tension)
  • Operates when the thorn in the seat belt buckle moves from an unlatched to a latched position
  • Choice of cable length and clips
  • Choice of connector and terminals
  • Ability to customize sensor output to customer needs

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