摘要:
An apparatus for determining a distance includes a converter element that generates n acoustic surface wave, a surface that feeds over at least part of the acoustic surface wave to a surface having a reflection point, and a processor that determines a distance between the apparatus and the reflection point from the propagation time of the acoustic surface wave. The converter element registers the acoustic surface wave reflected at the reflection point.
摘要:
An apparatus for determining a distance includes a converter element that generates n acoustic surface wave, a surface that feeds over at least part of the acoustic surface wave to a surface having a reflection point, and a processor that determines a distance between the apparatus and the reflection point from the propagation time of the acoustic surface wave. The converter element registers the acoustic surface wave reflected at the reflection point.
摘要:
A bearing including a first and a second bearing element that are movable relative to one another, a lubricant arranged between the first and the second bearing element for reducing the friction between the first and the second bearing element, at least one transmitter for exciting acoustic waves in the first or the second bearing element, the transmitter being arranged on the first or the second bearing element; at least one receiver for receiving acoustic waves evoked by the transmitter, the receiver being arranged on the first or the second bearing element, wherein information related to properties of the lubricant can be determined using a signal generated by the receiver upon receipt of acoustic waves evoked by the transmitter. The invention is also related to a method for determining properties of a lubricant in a bearing.
摘要:
The invention relates to a method for investigating a structure and a structure for receiving and/or conducting a liquid or soft medium, the method comprising the steps of: a) exciting acoustic waves in the structure by means of at least one transmitter, b) converting at least a part of the energy associated with the acoustic waves (A) excited in the structure into volume sound waves of the medium, c) reconverting at least a part of the energy associated with the volume sound waves into acoustic wave energy of the structure thereby generating acoustic waves in the structure, d) receiving acoustic waves evoked by the transmitter by at least one receiver, and e) verifying whether a coating is present on a surface of the structure and/or if a coating is present determining properties of the coating by evaluating a signal generated by the receiver upon receipt of acoustic waves evoked by the transmitter and/or verifying whether a level of the medium (5) is below a predetermined value.
摘要:
A method for the continuous manufacture of explosive mixtures by mixing their components in screw mixers with at least one charging aperture. Proportioned amounts of the components of the mixture are brought into entry zones provided with screw elements and situated below the charging aperture. The mixture components are then advanced through alternation kneading zones and transport zones having screw elements to the output end. The transport and kneading zones are configured such that the shear gradient therein is between 20/sec and 1500/sec and the maximum pressure in the stream of the mass is not more than 100 bars.
摘要:
A method and device for controlling a displaceable object operated by a motorized drive unit, for example a window pane, sliding roof or the like in a motor vehicle, and is particularly suitable for use as an anti-collision protector. By using surface waves in the area being monitored, it allows a simplified attachment of transmitter and receiver on the displaceable object. At least one mode converter is mounted in active connection with the area being monitored or with an area connected to this area wherein the mode converter (a) converts a volume wave running into the monitoring area (5,5') into a surface wave and/or (b) converts a surface wave running into the receiver into a volume wave. The mode converter is preferably constructed from several periodically arranged elements which are mounted along the propagation direction of the surface wave and have a division t which corresponds approximately to the wave length .lambda. of the surface wave.
摘要:
A method for measuring physical properties or characteristics of liquids uses an acoustic transfer system that utilizes Rayleigh waves. A wave guide with at least one test section formed from a solid surface made from non-piezo-electric material, contacts the liquid medium to be measured and/or a transfer system. A sender sends acoustic wave energy that includes at least one Rayleigh wave, and at least part of the acoustic wave energy leaving the sender passes at least once through a mode converter on its way to the receiver, whereby this part of its wave energy is converted at least partly from a Rayleigh wave (RW) into a volume sound wave (VW) or vice versa. The physical characteristics or physical properties of the liquid are then determined using changes of at least a parameter of the Rayleigh wave.
摘要:
A device for connecting functional elements is indicated which are arranged in a sliding door of a motor vehicle, with at least one supply source present in the body of the motor vehicle through lines which extend between the functional elements and the supply source. The sliding door is mounted on a carriage which is moveable back and forth in the bottom area of the motor vehicle essentially over the entire width of a door opening (3). Lines connected to a connection point (14) of the supply source are arranged in a guide chain (16) which is composed of mechanically stable chain links which are moveably connected to each other, wherein the guide chain is pivotally fastened with a first end to the sliding door and with a second end in the area of the connection point (14) to the body of the vehicle. An elbow (19) is arranged along the length of the guide chain (16) in the vicinity of the connection point (14) through which the guide chain (16) is raised with its second end to a level located above the upper edge of the carriage, while on the other side of the elbow (19) with the sliding door being in the closed position the guide chain is arranged below the bottom edge of the carriage.
摘要:
This task is solved according to the invention by a design corresponding to the characteristic of the claim. The inert insertion according to the invention has the shape of a cylinder with a cone or truncated cone-shaped extension whereby the transition from cylinder to extension takes place without break. The inert insertion is to be arranged in the explosive of the shaped charge oriented such that it points with its free end tapering to the cone tip or top surface, respectively, of the truncated cone in the direction to the primer charge and correspondingly with its cylindrical part in the direction to the lining of the shaped charge. This inert insertion from cylinder and cone or truncated cone, respectively, has been shown to be especially favorable in comparison to the well-known forms of inert insertion. The effect of shaped charge rounds equipped with it on modern multiplate targets was significantly better than those of charges with inert insertions of conventional form.
摘要:
A process for producing a compacted large-caliber explosive charge, including a primary charge and a prefabricated propagation charge, involves compacting the primary charge and the propagation charge together within a casing, housing or the like structure.