摘要:
A process and a circuit control a control unit of a system for protecting vehicle occupants, with a view toward triggering the protection system if the accident is sufficiently serious. The control unit contains one or more sensors which supply sensor signals during the accident, and it contains a computing unit. During the accident, the latter establishes one ACTUAL value or a plurality of different ACTUAL values characterizing the course of the accident on the basis of the sensor signals. It also automatically and continuously redefines a time-variable triggering threshold value in each case, which is namely directly or indirectly dependent on the changes in the sensor signals during the course of the accident. The computing unit compares one or more ACTUAL values with the triggering threshold value being respectively assigned to the ACTUAL value. However, on the basis of the progression of the ACTUAL value/ACTUAL values, it defines the triggering threshold value at any instant in such a way that it changes in a fluctuating manner at least during an accident phase, namely without delay in dependence on the instantaneous value of the ACTUAL value/ACTUAL values, even if during this accident phase there occur constantly major decelerations without the collision direction altering.
摘要:
The invention relates to a sensor device and a method for detecting an external impact load on a vehicle (12), especially in the event of a collision with a pedestrian. Said sensor device comprises a sensor line (14) which reacts to a mechanical deformation, a carrier body (16) for receiving the sensor line (14), and a measuring unit (20) which co-operates with the sensor line (14) and is used to provide an impact signal. Said carrier body (16) has a deformation structure (18) engaging with the sensor line (14), for varying the transmission of pressure force in certain sections.
摘要:
Previously in a bus system, voltage signals were transmitted from the central unit to the modules, which could reply thereto by variation of the current input. A disadvantage thereby is the relatively high susceptibility to interference of the current input, which itself already must be kept relatively small due to the energy consumption, as well as the correspondingly high effort and expense for an error-free recognition of the signals transmitted from the modules in the central unit. It is now suggested, that the modules also answer to the central unit by means of voltage signals superposed on the direct supply voltage, whereby for the time duration of the signal transmission by the modules, the central unit provides the direct supply voltage to the bus line over a resistor, so that the voltage signal of the module can be detected in the central unit on the bus line on the side of the resistor facing away from the direct supply voltage. A preferred application for bus systems in motor vehicles, especially for a sensor data bus, is provided.
摘要:
An unintended triggering of a safety device, such as an airbag in an occupant protection system, especially in motor vehicles is prevented by storing already during manufacturing of the module or modules, a blocking information in a memory location of the module or modules. The blocking information is preferably temporarily stored in place of a rated information, which is then overwritten when the module has been installed in the protection system for activating the system. In addition, the module is protected against electromagnetic and/or electrostatic disturbances at the input to the bus system.
摘要:
A plug-and-socket connector having a conductor track structure provided with electrical components, and a method of producing the same.Known plug-and-socket connectors in which a conductor track structure is formed from a metal band can only be embodied with a space-saving design at high cost, and nevertheless have a large structural height. It is very costly to provide such a plug-and-socket connector with components for realizing electrical functions. A design that saves more space, and a smaller structural height, are possible with a plug-and-socket connector having a conductor track structure that is planar and has a window-shaped opening, which is adjoined perpendicularly in one direction by a plug region that receives both the first plug and the second plug inserted from the opposite direction through the window-shaped opening of the conductor track structure. Pin-like tongues are bent, as connecting pins, into the plug region and preferably fixed, with the bent connecting pins and the conductor track structure, by a plastic injection-molded part. Socket contacts for pin-shaped contacting elements at the plugs are disposed in the plug region in insulation chambers and connected to the conductor track structure. Application of such a plug-and-socket connector for an ignition device of airbag systems in motor vehicles.
摘要:
A device which guarantees reliable real-time operation of the restraint system and offers each occupant of the vehicle individually the greatest possible protection includes the fact that data processing units are provided, all having the same design and each being capable of controlling multiple restraint devices and can decide independently of other data processing units whether the restraint devices assigned to it are to be deployed.
摘要:
A method for having the control unit access the measured data of individual sensors flexibly over time, and includes providing for the control unit to transmit a request message to the sensors, and having each sensor, by comparing the request message with its own address, derive whether and in what time slot, it should transmit its measured data to the control unit.
摘要:
An arrangement for generating digital signals on first and second bus lines is tolerant of most line faults, and includes modules connected to both lines, an upper switch between a first potential and the first line, a middle switch between the two lines, and a lower switch between the second line and a second potential lower than the first potential. The switches are controlled to generate digital signals as the potential difference between the two lines. If a fault potential (e.g. a short to ground or other potential) arises on one line, then the switches drive the non-faulty line to provide the required signals relative to the fault potential on the faulty line. Closing the middle switch ensures that the two lines are at the same potential for a low signal. This arrangement is for is signaling in various bus systems, e.g. in vehicle occupant protection systems in motor vehicles.
摘要:
In the restraint system, a central control unit and a plurality of data processing units are coupled to a bus line, each of the data processing units being provided to activate one or more restraint devices. In order to keep the restraint system operational to the extent possible in the event of a short circuit, each data processing unit measures for short circuits on the bus line and starts timing if a short circuit is detected. Each data processing unit has a circuit breaker, with which the bus line can be closed or interrupted. This circuit breaker is opened if the short circuit measured is longer than a preset waiting time.
摘要:
In the restraint system, in which coupled to a bus line are a central control unit and a plurality of data processing units that are provided to trigger restraint devices, a plurality of data channels that are clearly separable from each other are to be transmittable. In this context, data of high priority and high time-related urgency are transmitted with a high signal level and a high bit rate, data of lower priority and lower time-related urgency are transmitted with a low signal level and a low bit rate, data of high priority and lower time-related urgency are transmitted with a high signal level and a low bit rate, and data of a lower priority and high time-related urgency are transmitted with a low signal level and a high bit rate.