Seskion PSI5 Simulyzer

Hardware and software


The PSI5-Simulyzer is an interface box, with which data can be read out quickly and easily on the one hand, and on the other hand, simulation data can be used to actively intervene in the process.

  • Simplified development of sensor technology
  • Visualization / analysis tools in the PSI5 software
  • Test and simulation function

Professional data simulation

Facts about the PSI5-Simulyzer

In addition to the standard version, Seskion also offers modified versions as well as advanced hardware and software solutions for special measurement requirements.

HiL-Simulation for Airbag ECU

To generate a complete HIL simulation for an airbag control unit, the internal acceleration sensor signals of the control unit (SPI) and the peripheral acceleration and pressure sensor signals (PSI5) must be connected. Also the ignition timing can be measured and analyzed by using the SQUIB box. Furthermore, a PC system connected to the simulators via a USB port/network is used for data processing.

Often up to 6 or more PSI5-Simulyzer are operated together with several SPI-Simulyzer. For coordination there is a superordinate configuration, which determines which Simulyzer is used, which signal traces are used by which Simulyzer and which detailed configurations are to be used with the bus parameters. By using the superordinate configuration, the operation of the API is very simple. A continuous control of the sensor signals can also be made.


PSI 5 is a cost-effective sensor interface which is frequently used in the automotive sector. The control unit communicates with one or more peripheral sensors. Sensor data is transmitted by current modulation on the supply lines.
PSI5 uses data frames with two start bits, 8 to 24 user data and one parity or optional three CRC bits. A data transmission period is initiated by a voltage synchronization signal from the ECU.


    The optoPSI5 by mk-messtechnik GmbH is an optical transmission system of PSI5-signals which can be used in EMC test environments to bring a PSI5 interface with fiber optics into the test camber.

    Our Customers