Peripheral Sensor Interface 5
- Peripheral Sensor Interface 5
Peripheral Sensor Interface (PSI5) is a digital interface for sensors.
PSI5 is a two-wire interface, used to connect peripheral sensors to electronic control units in automotive electronics. Both point-to-point and bus configurations with asynchronous and synchronous data transmission are supported.
Functional description
PSI5 is a current interface with modulation of the sending current for the transmission of data on the power supply lines. The relatively high sending current and the use of a Manchester Code for bit encoding result in high immunity against interference from radiated emissions. The use of an inexpensive twisted pair cable is thus sufficient for most of the applications. Data words consist of two start bits, 8 to 24 data bits and a single parity bit or optional three bit CRC (Cyclic Redundancy Check).
tandardization
Following the goal of an open interface standard, PSI5 was developed on the basis of existing proprietary implementations of the companies Autoliv, Bosch and Continental. A first common publication was released at the "Sensor" trade fair in Nuremberg in May 2005. Since summer 2006, SiemensVDO also support the standardization of PSI5.
External links
* [http://www.psi5.org/ PSI5]
* [http://www.psi5-forum.com/ PSI5-Forum]
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