6results about How to "Increase the working distance" patented technology

The application provides a kind of millimeter wave three-dimensional detection imaging radar, including millimeter wave MIMO transceiving antenna, millimeter wave transceiving link, radar control processing module, external display control unit and power module;The antenna port area of mouth-shaped transceiving antenna array can be minimum under the condition that resolution requirement is relatively high, the antenna array carries out cutting angle processing, increases the transmitting and receiving spacing, reduces transmitting and receiving coupling, improves the action distance;wk imaging algorithm solves the problem that traditional three-dimensional FFT conversion imaging algorithm exists distance bending under large bandwidth, cannot realize focusing imaging and obtains material surface three-dimensional data.This application adopts millimeter wave technology, meets the surface of cement, ore and other material level in harsh environment to carry out three-dimensional imaging, detects silo inner wall sticky material, material virtual hitch, cavity;The application can also be applied to composite material flaw detection field, reconstructs three-dimensional image under surface layer by penetrating surface layer structure, realizes non-destructive flaw detection to composite material.

The utility model relates to the technical field of pipeline dredging, in particular to a detachable and cleanable pipeline dredging device for building drainage, which comprises a mounting rod, one end of the mounting rod is fixedly connected with a hook claw, the mounting rod is connected with a sliding seat in a sliding manner, and the surface of the sliding seat is fixedly connected with a cutter. A protruding block is fixedly connected to the surface of the mounting rod, a spring is fixedly connected to the side, close to the protruding block, of the sliding base, the mounting rod is sleeved with the spring, the end, away from the sliding base, of the spring is fixedly connected with the surface of the protruding block, the cutter is in a triangular prism shape, and a cutting face is arranged on the side, away from the hook claw, of the cutter. And the extension rod is positioned on one side of the mounting rod. According to the hair winding device, hair in a pipeline is effectively wound through the hook claw, the hair is cut off through the cutter, sundries are rapidly treated, the working efficiency of equipment is improved, and the workload of operators is reduced.

The present application relates to oil and gas field chemical auxiliary technical field, disclose a kind of high-temperature resistant hyperbranched viscosifying self-generating acid, preparation method and application thereof, the viscosifying self-generating acid of the present application is prepared by iteration reaction with maleic anhydride and polyhydroxy alcohol and / or polyhydroxy alcohol amine as raw material, and the viscosifying self-generating acid obtained by preparation is hyperbranched molecule, and its molecule has hyperbranched structure inside.The hyperbranched viscosifying self-generating acid of the present application is hyperbranched structure, without additional thickening agent when using, itself has thickening function, with excellent viscosifying performance, and preparation process is simple, yield is high and cost is low.And, as acidizing fluid still has good self-generating acid ability under superhigh temperature, especially suitable for acid fracturing reconstruction of superhigh temperature reservoir.

The invention discloses a radar communication integrated radio frequency signal generation device. In the device, a data interface unit is used for receiving data to be transmitted; the data grouping unit is used for grouping data; the pulse control unit maps each data combination of the pulse mapping group into K pulses selected from a pulse set for data transmission according to a one-to-one mapping relationship, maps each data combination of the transmission sequence group into a certain serial transmission sequence of the K pulses, and outputs the serial transmission sequence to the pulse modulation unit; the pulse modulation unit loads the data of the data modulation group to the K serial pulses according to a mapping modulation mode to complete pulse modulation; and the nonlinear unit generates a nonlinear frequency modulation signal with variable carrier frequency and phase and outputs the nonlinear frequency modulation signal to the power amplifier unit. According to the technical scheme disclosed by the invention, the data transmission capability and the target detection capability of the radar communication integrated signal are improved.

This invention relates to a method for measuring the tilt angle of an object based on optical vortices with continuously varying ellipticity. First, the rotational Doppler frequency shift mechanism of vortexes with different ellipticities is elucidated. Then, a set of vortex beams with continuously varying ellipticity is prepared by adjusting the beam intensity and phase using a complex amplitude modulation method. These beams are sequentially irradiated onto a rotating object, and the echo signals are received. Subsequently, the rotational Doppler time-frequency spectrum is obtained using time-frequency analysis. Theoretical analysis shows that when the ellipticity of the vortex beam and the tilt angle of the object satisfy a corresponding relationship, the spectral broadening is minimized and the signal amplitude is maximized. Therefore, the optimal ellipticity of the beam and the object tilt angle can be determined based on the time-frequency spectrum changes. This method requires a simple detection system, is easy to operate, and can accurately measure the tilt angle of an object, thus having great application potential in telemetry.

This utility model discloses a welding support and positioning fixture for a tunneling machine, including a work frame connected to one side of the top of the work platform, and a front support frame connected to the top of the work platform away from the work frame; a rear support frame is also provided on the work frame facing the front support frame, and a support assembly for horizontal adjustment facing the front support frame is connected to the top of the work frame. The advantages of this utility model compared to the prior art are: it provides a welding support and positioning fixture for a tunneling machine that reduces material waste and ensures construction efficiency.