A complete block diagram is shown below.
The minimum Car Black Box diagram si shown below.
Clearly, apart the two solutions mentioned above, there are other
intermediate solutions that meet specific requirements of the insurance
In this page we give some reference of the possible STM chips that are used in the Car Black Box.
There are the possibility to use different level of MCU (from 8 to 32bit).
The MCU depend if the Car Black Box is low level or high level.
Below there are a list of possible solution using STM MCU.
STM8Sxxx - 8bit MCU
STM8Lxxx - 8bit MCU Ultra Low Power
STM32Lxxx - 32bit MCU CORTEX-M3 Ultra Low Power
STM32F0xx - 32bit MCU CORTEX-M0 Low Power
coming soon (end of February 2012)
STM32F10x - 32bit MCU CORTEX-M3
STM32F2xx - 32bit MCU high performance CORTEX-M3, (HW encryption and CCD camera interface)
STM32F4xx - 32bit MCU CORTEX-M4, (HW encryption and CCD camera interface)
STM32Wxx - 32bit MCU CORTEX-M3 + transceiver at 2,4Ghz
For a complete analysis of what happens to a vehicle would monitor the following parameters:
of the above information can be found by interfacing the electronics of
the vehicle, others are acquire with the installation of new sensors.
Force of impact
Temperature sensors are here.
Capture images allows a better understanding of what happened before, during and after the accident.
STMicroelectonics offers a large range of CMOS image sensors and advanced image signal processors (ISP).
This products are available only for big volumes.
In general the STM MEMS sensors are here.
For saving the data is possible use the SD Card or the EEPROM.
The SD Card interface is easy to use but it has some limits in Automotive Applications (temperature and data retention).
EEPROM solution is more professional, you see here the STM EEPROM.
Communication GSM, GPRS, etc
In STM portfolio there are not solutions for this area.
Built-in GPS chip precisely locates the vehicle’s location and marks it
on the recorded video. This allows the precise location of any
accidents or events to be recorded, and provides driving location on a
Google Map during video playback. Exact vehicle speed information is
The STM GPS Solutions is here.