摘要:
A method is used to largely suppress the offset of a rotation rate sensor in that a given rotation rate is only subjected to integration if it exceeds a lower rotation rate threshold and lies below an upper rotation rate threshold. The thresholds are predefined as a function of an offset of the rotation rate sensor in question, and integration of the rotation rate is aborted after a predefined reset time and restarted.
摘要:
An electronic device includes a resonant circuit and an evaluation circuit. The resonant circuit includes an acceleration-sensitive sensor which is excited to vibrate during a testing phase of the acceleration-sensitive sensor. The evaluation circuit is coupled to the resonant circuit to determine a performance reliability of the acceleration-sensitive sensor.
摘要:
An intelligent restraint system, which generates a variable, individual tripping characteristic for each of a plurality of restraint devices depending on the type and severity of the accident and on the seat occupation, has a central gas generator (1), whose firing is tripped by a central control unit (4). The gas generator (1) is connected to the restraint devices (10-25). Electrically controllable valves (31-44) are disposed in the gas supply lines to the restraint devices (10-25). The controlling of the valves is effected from the central control unit (4) via the bus system (45).
摘要:
A MOS field-effect transistor (T2) is provided in conjunction with transistors (T1 and T3) as polarity reversal protection in an electrical circuit arrangement (1). Polarity reversal protection of this type is realized by the drain-source path of the transistor (T2). Transistors (T1 and T3) form a comparator. If the drain-source voltage of the transistor (T2) becomes negative then the transistor (T3) switches on. This, in turn has the effect of switching off the transistor (T2) thereby providing polarity reversal protection. The electronic circuit arrangement (1) configured according to the invention can advantageously be used in an airbag system (10).
摘要:
An apparatus and method for actuating a safety system for protecting an occupant of a motor vehicle measures the acceleration of the vehicle with a first sensor along a first axis oriented substantially parallel to the forward direction of motion of the vehicle. The acceleration of the vehicle is also measured with a second sensor along a second axis oriented at an angle relative to the first axis. The acceleration signal generated by the first sensor is evaluated by an analog processor and the acceleration signal generated by the second sensor is evaluated by a digital processor. The safety system is then actuated based upon both the analog and digital evaluations.
摘要:
In a method for controlling the release of a passenger restraint system in a vehicle, an acceleration signal is measured and integrated with respect to time to obtain a velocity signal. A release threshold value for the velocity signal is determined. If the velocity signal then falls below the release threshold value, thus indicating a vehicle collision, the passenger restraint system is released. The release threshold value is controlled depending on the type of accident situation and upon the operating parameters of the vehicle to increase the release sensitivity of the passenger restraint system. For example, the release threshold value is adjusted based on the value of the velocity signal. If the velocity signal decreases in value, then the release threshold is lowered to a more sensitive value.
摘要:
To improve the reliability of systems which, upon operation of the brake, must be disconnected but otherwise operate reliably, and to reduce the number of components required, a memory and control circuit is provided which includes an amplifier having a self-holding feedback connection. Upon receiving a "disconnect" signal, for example due to operation of the brake of the vehicle, control operation of the circuit is inhibited; upon operation of a "resume" switch, connected to the feedback junction, the self-holding feature of the amplifier in the "disconnect" mode is inhibited so that the circuit can again resume its control function.
摘要:
A device for warning occupants in a vehicle is proposed which is connectible to a passenger-compartment sensory system and which has a warning device for an occupant, the warning device being activated as a function of signals from the passenger-compartment sensory system. As a warning device, a display, and/or a loudspeaker, and/or haptic means can be used. The vehicle occupant is warned, in particular, if he/she is in the so-called out-of-position situation. In the process, it is checked whether the occupant has been in the out-of-position situation, without interruption, for a predefined time period. Only then does a warning also follow.
摘要:
A control unit having an oscillator for a processor is described, the control unit storing a temporary absence of oscillation of the oscillator in a first error memory, if oscillation begins again after the absence.
摘要:
A protection device for a pregnant person in a vehicle is described, a sensor being provided for detecting the pregnant person and a restraint unit being configured in such a way that the usability of the restraint unit is influenceable as a function of a signal of the sensor. The restraint unit may be disabled in the event of an accident or its deployment force may be reduced or it is usable depending on the situation.