Adding CAN nodes in Bluetooth Low Energy PEPS systems
In a passive-entry-passive-start (PEPS) automotive system using Bluetooth Low Energy technology, drivers enter their car and start the electric motor (or engine, in the case of an internal combustion engine) using a key fob that communicates with the car’s access systems, instead of a key.
In a typical architecture of Bluetooth Low Energy PEPS in a car, there is one central smart key module and nine satellite modules. The nine satellite modules shown here are only an example; a real implementation could have more or fewer satellite modules. These modules communicate using a communication bus.
So what is inside the satellite node? A typical block diagram of a Bluetooth Low Energy satellite module has a Bluetooth Low Energy system-on-chip (SoC) such as TI’s SimpleLink CC2640R2F-Q1, a power supply, and a communication interface (typically a transceiver).
To read the full article from Texas Instruments, click here.
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