Abstract: A vehicle safety electronic control system (8) including a first microcontroller (11), a second microcontroller (12), and an inter-processor communication path (13) for bi-directional transfer of data between the microcontrollers (11,12). The system has a first mode of inter-processor communication in which the first microcontroller (11) acts as a master and the second microcontroller (12) acts as a slave, and a second mode of inter-processor communication in which the second microcontroller (12) acts as a master and the first microcontroller (11) acts as a slave. A mode selector (18-20) is provided to select and switch between the first and second modes.

Abstract: A vehicle safety electronic control system (8) including a first microcontroller (11), a second microcontroller (12), and an inter-processor communication path (13) for bi-directional transfer of data between the microcontrollers (11,12). The system has a first mode of inter-processor communication in which the first microcontroller (11) acts as a master and the second microcontroller (12) acts as a slave, and a second mode of inter-processor communication in which the second microcontroller (12) acts as a master and the first microcontroller (11) acts as a slave. A mode selector (18-20) is provided to select and switch between the first and second modes.

Abstract: A power management circuitry for a radar level gauge including a first voltage converter, having a low-voltage end for receiving a drive voltage from a power interface and a high-voltage end for supplying an intermediate voltage higher than the required operating voltage, a temporary energy store arranged to be charged by the intermediate voltage, a second voltage converter, having a high-voltage end for receiving an input voltage from the energy store, and a low-voltage end for providing the operating voltage lower than the input voltage. By storing energy at a higher voltage, a different type of energy store (e.g. low capacity capacitor) may be used. As a consequence, the cost and start-up time of the energy store is significantly reduced.

Abstract: A power management circuitry for a radar level gauge including a first voltage converter, having a low-voltage end for receiving a drive voltage from a power interface and a high-voltage end for supplying an intermediate voltage higher than the required operating voltage, a temporary energy store arranged to be charged by the intermediate voltage, a second voltage converter, having a high-voltage end for receiving an input voltage from the energy store, and a low-voltage end for providing the operating voltage lower than the input voltage. By storing energy at a higher voltage, a different type of energy store (e.g. low capacity capacitor) may be used. As a consequence, the cost and start-up time of the energy store is significantly reduced.