摘要:
The device for visibility measurement is designed primarily for use in motor vehicles. A light emitter is arranged inside the driver's compartment preferably on the rear view mirror in front of the windshield. The light emitter generates light pulses or flashes radiating through the windshield. The light scattered back due to soiling on the inside and outside of the windshield or in scatter zones, formed by fog or smoke or the like, in front of the windshield, impinges a light sensor, preferably likewise arranged on the rear view mirror inside the driver's compartment. By utilizing light pulses of various wavelengths and processing of the output signals of the light sensor in predetermined or predeterminable time windows or intervals, not only the respective visibility but also the type of viewing impairment can be determined.
摘要:
Acceleration sensors in a vehicular safety system with at least two acceleration sensors are stimulated by an electrical or sound excitation so that one of the sensors functions as a body sound transmitter, while the other(s) receive(s) these signals and vice versa. The performance which includes a calibration check, and the coupling to the housing structure are evaluated through a signal processing circuit. The safety system including its output trigger stage, remains switched-on during testing.
摘要:
Acceleration sensors in a vehicular safety system with at least two acceleration sensors are stimulated by an electrical or sound excitation so that one of the sensors functions as a body sound transmitter, while the other(s) receive(s) these signals and vice versa. The performance which includes a calibration check, and the coupling to the housing structure are evaluated through a signal processing circuit. The safety system including its output trigger stage, remains switched-on during testing.
摘要:
A goniometric device for measuring an angle such as the angle of rotation of the steering wheel in a motor vehicle is useful for providing a backlash-free reduction ratio of the angular movement to be measured. For this purpose an elastic torque rod is used to one end of which the angular movement is applied and the other end of which is rigidly fixed. The angular movement of a tap is taken off at a tap location between the two ends. The reduction ratio depends on the ratio between the two distances from the tap to both ends of the torque rod.
摘要:
A magnetic impact sensor for motor vehicles with a safety system such as an airbag or belt tensioner for an occupant restraint system, has a circuit breaker arranged in an electrical trigger circuit of the safety system for inflating the airbag or tightening the belt by closing the trigger circuit in response to an acceleration or deceleration effective beyond a prescribed time duration. For this purpose a magnet in combination with specially shaped pole pieces forms two magnetic circuits the magnetic conductances of which are influenced by the position of a ferromagnetic ball that moves in response to an impact relative to the pole pieces to thereby open or close the circuit breaker. Normally, in the absence of an impact the ball is in a first position that keeps the circuit breaker open. When an impact occurs the ball moves into a second position to close the circuit breaker and thus the trigger circuit.
摘要:
An impact sensor (1) for a vehicle is connected to a testing circuit. The impact sensor includes an acceleration sensor (5), an evaluating circuit (6) and a trigger circuit (7) for a passive safety device. For simply testing the operability of the impact sensor an electro-acoustic transducer (9) is arranged in a sensor housing (2). The transducer (9) emits a testing signal that is received by the acceleration sensor (5). The electrical signals which are produced by the acceleration sensor are tested by the testing circuit (10) which is part of the evaluating and trigger circuit. The testing is performed with reference to given criteria.
摘要:
An explosive composition comprises a porous fuel and an oxidizer. The porous fuel is a solid with a structure size measuring between about 2 nm and 1000 nm and has a porosity that lies between 10% and 98%. The oxidizer is solid or liquid at room temperature and is incorporated into the pores of the porous fuel. The oxidizer is selected, in an amount of at least 50% by weight relative to a total quantity of the oxidizer, from the group consisting of hydrogen peroxide, hydroxylammonium nitrate, organic nitro compounds or nitrates, alkali metal nitrates or earth alkali metal nitrates as well as metal nitrites, metal chlorates, metal perchlorates, metal bromates, metal iodates, metal oxides, metal peroxides, ammonium perchlorate, ammonium nitrate and mixtures thereof.
摘要:
The invention relates to an ignition unit (1) suitable for triggering an active system, such as an airbag or safety belt. The ignition unit comprises an ignition charge (7) located in a housing (2), which can be fired by means of an ignition bridge (6) positioned on a support element (5), as well as at least one contact pin (13a, 13b, 13c) which protrudes from the housing (2) and via an electronic ignition system (9) is electrically connected to the ignition bridge (6). The electronic ignition system (9) is surrounded by an envelope (10) made of a shock-absorbing material. The ignition bridge (6) is not covered by the envelope (10) so that during ignition the pressure exerted on the electronic ignition system (9) is cushioned. This prevents damage to the sensitive electronic components of the electronic ignition system (9) situated on the support element (5).
摘要:
The invention relates to a safety device for motor vehicles in the form of an impact protection arrangement, wherein the pot-shaped housing of the sensor for the activation of the ignition device of the gas generator, has a form fitting with the flange of the gas generator housing, and is attached to it in such a way that part of the gas generator housing is contained in the sensor housing, thereby forming an air gap which is electromagnetically shielded against interfering influences. An example embodiment is described and shown in the figures of the drawings.
摘要:
An explosive composition comprises a porous fuel and an oxidizer. The porous fuel is a solid with a structure size measuring between about 2 nm and 1000 nm and has a porosity that lies between 10% and 98%. The oxidizer is solid or liquid at room temperature and is incorporated into the pores of the porous fuel. The oxidizer is selected, in an amount of at least 50% by weight relative to a total quantity of the oxidizer, from the group consisting of hydrogen peroxide, hydroxyl ammonium nitrate, organic nitro compounds or nitrates, alkali metal nitrates or earth alkali metal nitrates as well as metal nitrites, metal chlorates, metal perchlorates, metal bromates, metal iodates, metal oxides, metal peroxides, ammonium perchlorate, ammonium nitrate and mixtures thereof.