摘要:
Laser-induced color printing with means with which the printing color of a micro-capsule to be impinged by the laser beam (12) is identified. These means are a fluorescence transformer material as a constituent of the content of the micro-capsules (3) or an additional white light ray with which the printing color of an individual micro-capsule (3) can likewise be identified.The printing ensues given coincidence of a printing instruction provided for a defined location with color specification and of the momentary incidence of the scanning laser beam (12) on a micro-capsule (3) for which this printing color has been identified as being present.
摘要:
Optical sensor line of amorphous or polycrystalline photo-electric material having a plurality of sensor elements. An optical sensor line of amorphous or polycrystalline photo-electric material having a plurality of sensor elements, whereby it is provided that a non-linear element is allocated to each sensor element as a converter that converts the photo-current (i.sub.ph) of the associated sensor and which is proportional to the quantity of light incident on the sensor into a signal voltage (u.sub.s) that is at least approximately proportional to the logarithm of the photo-current (i.sub.ph).
摘要:
A pressure sensor for an internal combustion engine has a piezoceramic transducer in an operating connection, by way of a plunger, with a membrane, the sensor being secured in a cylinder head of an internal combustion engine with the membrane located within a cylinder. The pressure sensor serves for detecting knock and ping.
摘要:
A photographic or electronic camera is disclosed having an optoelectronic distance meter. Linear sensors are provided and by way of partial aperture diaphragms associated with a lens first and second images are created and projectd onto the image sensors. An evaluating circuit, in dependence upon varied position displacements of the sensor signals, determines a maximum correlation between the signals and an associated position displacement with a corresponding electrical value corresponding to distance. A stringing mirror deflects the path of rays either into the view finder or to an image plane for picture taking. The swinging mirror has apertures positioned to permit the first and second bundles of rays to pass therethrough. Deflection elements are attached to the swinging mirror and are positioned to direct the partial bundles of rays passing through the apertures such that the images are projected onto the image sensors.
摘要:
The invention relates to a process for the production of hydrophilic filaments and fibres from a filament-forming synthetic polymer by a wet- or dry-spinning process which comprises introducing into the spinning solvent from 5 to 50% by weight of a substance with special properties defined herein and from 0.05 to 5% by weight of at least one surface-active compound as well as to hydrophilic filaments and fibres produced by such process.
摘要:
Burglar alarm apparatus includes an ultrasonic transmitter and an electromagnetic radiation transmitter whose signals are Doppler frequency shifted by an object moving through the radiation fields, the signals being received by respective demodulating receivers which provide respective electrical signals corresponding to the Doppler frequency. Frequency conversion apparatus is connected to one of the receivers to convert the output frequency thereof by a predetermined ratio to normalize or equalize the frequencies and a signal comparison circuit is provided to produce a signal in response to a ratio of the Doppler shifted signals within a predetermined tolerance range.
摘要:
Circuit arrangement for inducing oscillations in an ultrasonic transducer approximating its natural resonance frequency, and comprising an oscillator for generation of an excitation AC voltage. A pulse gate circuit is connected to supply pulse wise application of the AC voltage to the transducer. The oscillator frequency is controlled by an auxiliary pulse generator connected to the transducer in parallel with the oscillator. A gate circuit and a phase discriminator are employed to produce favorable excitation for the particular oscillation mode of the transducer. The transducer is made preferably from a piezo electric ceramic. The circuit includes means capable of automatically finding the resonance frequency of the transducer.
摘要:
An information display system having an output display for presenting information. Optical means are provided that deflect an illumination beam path into the field of view of the observer. Further, a subdividable output display is created that makes it possible to partly obtain information in a vehicle via a head-up display and partly via a traditional or back-projection display. Given seats arranged in rows, for example in airplanes or buses, back rests of preceding seats contain an output display and a communication interface to the seat of the viewer.
摘要:
Integrated design of a combustion pressure sensor (11, 12, 13, 14) and combustion heat-flow sensor (21) which is suitable for determining a physical variable of the combustion process of an engine.
摘要:
Hydrophilic polyacrylonitrile filaments or fibres where at least one filament-forming synthetic polymer is wet spun in a spinning solvent and wherein the spinning solvent has added to it from 10 to 20% by weight of a substance which is readily miscible with the spinning solvent and a washing liquid and is a nonsolvent for the polymer to be spun.