6results about How to "Structure is easy to implement" patented technology

The invention relates to a double-flexible-support pendulum type all-quartz resonant accelerometer and an assembly method thereof, the accelerometer comprises a sensitive mass block structure composed of a mass block, mass block flexible supports and stress isolation areas, an upper resonant beam is connected above the mass block, and a lower resonant beam is connected below the mass block; a lower limiting plate is connected below the sensitive mass block structure, and the lower part of the lower limiting plate is connected to the mounting base; an upper limiting plate and a lower limiting plate are connected above the sensitive mass block structure, and the sensitive mass block structure and the upper limiting plate penetrate through the positioning binding post; the outer sides of the lower limiting plate, the sensitive mass block structure and the upper limiting plate are provided with a shell, and the shell is connected to the mounting base; the upper resonant beam and the lower resonant beam are electrically connected with a resonant circuit in the mounting base through positioning binding posts, and signals are transmitted to the resonant circuit; according to the invention, the environmental adaptability of the accelerometer is improved, the temperature characteristic of the accelerometer is reduced, the volume of the accelerometer is reduced, and the accelerometer adapts to the miniaturization and high-precision development trend of an inertial navigation system.

The utility model discloses a kind of hardware anti-shaking electronic switch circuit, including signal input filter voltage stabilizing circuit, signal anti-shaking inverting circuit and signal buffer circuit;Wherein, the input end of signal input filter voltage stabilizing circuit is connected after the input signal needing anti-shaking outside, the output end of signal input filter voltage stabilizing circuit is connected with the signal anti-shaking inverting circuit, signal buffer circuit;The output end of signal anti-shaking inverting circuit is connected with the input end of signal buffer circuit, and the output end of signal buffer circuit is connected to the external circuit of receiving anti-shaking signal.The utility model can effectively eliminate mechanical contact shaking, ensure the stability and accuracy of signal, applicable to most circuits needing signal anti-shaking.Meanwhile, circuit structure is easy to realize, and cost is low.

The utility model relates to the technical field of communication, in particular to a built-in FPC (Flexible Printed Circuit) antenna for tunable broadband. The utility model provides a tunable broadband built-in FPC antenna, which comprises a dustproof layer, an electromagnetic shielding cover, a wire end and the like, the electromagnetic shielding cover is arranged on the lower side of the dustproof layer, and the dustproof layer is connected with the wire end. Through the design of integrating a plurality of switchable inductance elements, dynamic tuning and accurate matching of the resonant frequency of the antenna are realized, not only is the adaptive capacity of the antenna under different frequency bands enhanced, but also the working bandwidth of the antenna is effectively widened, and the requirements of a modern communication system for multi-frequency band, high integration level and intelligent tuning are met; low return loss can be realized in a target frequency band, and the matching performance of the antenna and a transmission line and the signal transmission efficiency are improved; the method adapts to a wide frequency band range, and the performance of multiple frequency points is good; the structure is convenient to realize, manufacturing and integration are facilitated, cost is reduced, and the antenna can be widely applied to internet of things 4G antenna projects such as power banks and water meters.

The invention discloses an aerial imaging device based on a retro-reflection microstructure array, which relates to the field of aerial imaging and comprises a retro-reflection microstructure array, a spectroscope, a quarter-wave plate and an image source. Light beams emitted by the image source are reflected by the reflection polaroid, penetrate through the quarter-wave plate, reach the retroreflection microstructure array, are reflected by the retroreflection microstructure array, sequentially penetrate through the quarter-wave plate and the spectroscope, and are converged in the air to form a real image. According to the device, the physical reflection and transmission characteristics of the inclined spectroscope are utilized, and the directional reflection function of the retro-reflection microstructure array is combined to realize light path guiding, so that large-size and large-view-angle aerial imaging of naked eyes is realized. And there is no multi-layer stacking design between the elements, and there is no need to arrange a special interference light filtering element, thereby effectively reducing the cost. The problems that an existing aerial imaging display technology is large in implementation difficulty, the display resolution is limited by the size of a plane mirror, and ghost shadows exist after imaging are solved.

The utility model relates to a turning plate device between a construction site external elevator and a floor, which comprises a driving part, a hinge rod, a shielding piece and a turning plate, the driving part is fixed on the inner side surface of the external elevator, the peripheral side edge of the turning plate comprises a hinge edge and two parallel and opposite connecting edges, the hinge edge of the turning plate is hinged on the bottom edge of an entrance of the external elevator, and the shielding piece is arranged on the hinge edge. The two shielding pieces are vertically fixed to the two connecting edges respectively, the hinge rods are obliquely arranged, the upper ends of the hinge rods are hinged to the driving end of the driving part, and the lower ends of the hinge rods are hinged to the connecting edges; the driving part drives the hinge rod to extend out of the external elevator or retract from the outside of the external elevator, and then the turning plate is driven to be turned over outwards to be opened or turned over inwards to be retracted, and the shielding piece is driven to extend out of the external elevator or retract from the outside of the external elevator. The turnover plate can shield the gap between the floor and the external elevator, construction personnel do not participate in unfolding of the turnover plate, more time and labor are saved, and use is easier and more convenient.