摘要:
An electronic device, in particular a system for safeguarding vehicle occupants, comprises at least two acceleration-sensitive sensors arrangements. To test the readiness for operation of the sensor arrangements, output signals from the sensor arrangements are compared. Output signals, which occur as the result of accelerations arising during normal operation of the vehicle, are also drawn upon when the comparison is made.
摘要:
An electronic device for triggering safety devices 10 comprises a firing element ZP which is connected in series to a capacitor ZK. The firing element ZP is acted upon by currents from controllable current sources IQ1, IQ2, which, in accordance with an output signal of a sensor S, are triggered by an evaluation circuit AS.
摘要:
In an electronic safety device for vehicle occupants including an acceleration-sensitive sensor, a control unit, and a plurality of inertial restraining devices with associated output stages, a reliable operating mode is guaranteed for the safety device by storing characteristic fault conditions, together with control strategies compensating for these fault conditions. In the event of a fault, the safety device applies the respective, assigned control strategy to activate the restraining devices.
摘要:
An air bag system for protecting the occupants of a motor vehicle in the event of a collision has a plurality of firing circuits comprising air bag igniters (3a,3b,3c) in series with respective power transistors (T.sub.1,T.sub.2,T.sub.3) which can be triggered in the event of an accident to inflate a corresponding plurality of air bags. A single energy storage capacitor (E) is connected to all of the firing circuits for supplying energy to activate the bag igniters over the upper common power stage (7) in the event that there is a loss of battery voltage when the system has been actuated. A comparator (9) monitors the voltage drops across respective resistors (R.sub.1,R.sub.2,R.sub.3) in series with the power transistors (T.sub.1,T.sub.2, T.sub.3) and reduces the current through these transistors in the event that an excessive current is detected. Steps are taken to ensure that the period of activation of the current supply to the igniters is limited.
摘要:
A detonation circuit for an inflation capsule (10) of a vehicle air bag has a capacitor (20) which supplies energy to the capsule during a crash condition. The circuit has a transformer (12), the energy source (20) being electrically connectible to the primary coil (P) thereof by two transistors (30, 48) which assume a conducting state when associated control means (16, 18) determine that a crash condition has occurred. Only when both transistors conduct can the energy source (20) cause a change in the current flow through the primary coil (P), which in turn induces a change in current in the secondary coil (S) to which the capsule (10) is connected.It has been found that by monitoring the voltage and current characteristics in the primary coil (P), the state of the capsule (10) can be monitored. For example, it can be determined whether the capsule has fired, and if so further firing pulses may be suppressed.
摘要:
A passenger protection device in a motor vehicle includes at least one airbag, at least one gas generator for filling the airbag, an airbag control device for activating the airbag, means for acquiring the deployment speed of the airbag, and means for regulating the filling quantity of the airbag, taking into account its deployment speed. In order for the passenger protection device to implement a controlled filling of the airbag dependent on its deployment speed, at least one flow-off valve is provided that is situated between the gas generator and the airbag. In addition, controllable actuating means are provided for the sealing of the flow-off valve.
摘要:
A safety apparatus for a motor vehicle, comprising: a plurality of occupant protection devices and sensors associated with them; a processing device that checks whether the occupant protection devices and/or associated sensors are in operation and/or properly functional, and ascertains status information therefrom; and an output device that, in consideration of all the status information, communicates the operating status possessed by each individual occupant protection device and/or sensor. Also described is a method for communicating the status of a safety apparatus of a motor vehicle.
摘要:
An occupant-protection system for vehicles, including: at least one sensor, which detects the surrounding area of the vehicle and generates sensor signals therefrom; an evaluation device, which analyzes the sensor signals, detects an approaching hazardous situation in advance according to an algorithm for the early detection of a hazardous situation and generates a trigger signal in this case; a seat-adjustment device having at least one actuator for adjusting a seat, the seat-adjustment device having a first speed for a comfort adjustment of the seat and a second, higher speed for the seating adjustment of the seat in response to triggering by the trigger signal. Also provided is a method for activating an occupant-protection system for vehicles.
摘要:
A device for wireless transmission of a deployment signal. The device includes two processors on both the primary side and the secondary side, which exchange data with one another. A high degree of redundancy is thereby achieved. The wireless transmission is preferably carried out as inductive transmission.
摘要:
A passenger safety device includes at least one electrical component, especially a restraint system such as an airbag and/or seat belt tightener, for a vehicle equipped with an electrical system, with an energy reserve circuit to temporarily maintain the voltage supply for triggering of the safety device. In order to ensure reliable functioning, it is proposed that the safety device be disconnected from the electrical system voltage (U.sub.N) when the voltage exceeds a maximum value (U.sub.max) which can be predetermined, and then be connected with the energy reserve circuit (9).