Seat occupancy Sensor SBS

Product catalog summary

Product Overview: The Seat Occupancy Sensor (SBS) by Mayser GmbH & Co. KG is designed to detect whether vehicle seats are occupied, enhancing the functionality of systems like Seat Belt Reminders (SBR), Supplemental Restraint Systems (SRS), and automatic air conditioning. The sensor's simple design allows integration into various vehicle seats.

System Design: The third-generation SBS includes an actuator, an electric circuit, and a wire harness with a connector for interfacing with on-board electronics. It can detect seat occupancy and identify faults such as short circuits or cable breaks.

Operation: The sensor classifies a seat as occupied when actuated and not occupied when not actuated. A short circuit is recognized as 0 ohm, and an optional diagnostic resistor can detect line breaks.

Application: The SBS can be positioned on the B-surface of the seat foam or installed in the lower seat structure. Installation is vehicle-specific and subject to technical modifications.

Technical Specifications:

Switching Characteristics: Actuating force is 5.3 N ± 1 N, with 1× 10⁶ switching operations.
Mechanical Conditions: Dimensions are 35.4 × 7.65 × 30.4 mm, weight is 7 g, and it has an IP52 protection rating. Operating temperature ranges from -40 °C to +85 °C, with temporary tolerance up to +120 °C.
Electrical Conditions: The connecting cable is 2× 0.35 mm², with customized length and connector. It supports a DC voltage of 5 V, a current of 20 mA, and a resistance of 270 Ohm ± 5%.

Catalog excerpts

Seat occupancy sensor SBSEN | Product information Mayser GmbH & Co. KG Orlinger StraBe 1-3 89073 Ulm GERMANY Phone: +49 731 2061-0 Fax: +49 731 2061-222 E-mail: [email protected] Internet: www.mayser.com

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Areas of application Seat Belt Reminders (SBR), Supplemental Restraint Systems (SRS) or automatic air conditioning (AUTO A/C) systems used for multiple climatic zones, the total efficiency of such intelligent systems does not prove itself until it is known if the individual seats are occupied or not. Special sensors, integrated in the seats, detect if the seats are occupied or not, thus providing smooth function of these systems. Thanks to its simple design, the Mayser tactile seat occupancy sensor SBS can be integrated into almost any type of vehicle seat. Concept As a part of the Seat Belt...

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Operation As soon as the seat occupancy sensor SBS is actuated, the seat is classified as occupied. When the SBS is not actuated, the seat is classified as not occupied. A short circuit in the supply lines is recognised as 0 ohm. As an option, a diagnostic resistor Rd can be integrated in order to recognise a break in the lines. When the seat belt is not fastened, the following typical chart ensues Subject to technical modifications. Application Two types of application are possible. 1. Positioned on the B-surface of the seat foam. Prior to the foaming process the sensor is introduced into the...

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