Apparatus for recording driving data with a temporal resolution adapted to the signal shape of analog measurement signals

US5412570A · kind A · utility

Assignee

• Mannesmann Kienzle GmbH · DE

Inventors

• Martin Gruler · Aixheim, DE
• Helmut Bacic · Rehna, DE
• Hartmut Schultze · Villingen-Schwenningen, DE

Key dates

• Filing date: Jun 29, 1993
• Grant date: May 2, 1995
• Expiry date: Jun 29, 2013

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C5/085
• WIPO field: Control
• WIPO sector: Instruments

Abstract

An apparatus for recording driving data which comprises a data gathering device, which further comprises a sensory measuring device, a control unit, an A/D converter, a plurality of parallel ring storage devices and a semiconductor storage device. Analog measurement signals, which are continuously detected by the sensory measuring device, for recording a vehicle movement, are continuously sensed by the control unit with two different frequencies after being digitized into digital measurement signals in the A/D converter. The digital signals are stored in the plurality of parallel ring storage devices with clock frequencies. Upon a detection of an accident, a trigger signal causes the control unit to stop storing the digital measurement signals in a first of the plurality of parallel ring storage devices with a lower clock frequency after a delay so that a storing of measurement data in the first of the plurality of parallel ring storage devices terminates one of after an after-running period and as a result of a stopping of the vehicle. The control unit interrupts a further storage of the digital measurement signals in a second of the plurality of parallel ring storage devices with…