5results about How to "Guaranteed detection" patented technology

The application provides a UAV countermeasure device and method with switchable radiation signal polarization, comprising: at least two polarization antennas, the polarization directions of different polarization antennas being different; a power amplifier unit connected with a signal source; a power division unit arranged between the at least two polarization antennas and the power amplifier unit, used for realizing the combination of the at least two polarization antennas; and a polarization switching unit, one polarization switching unit corresponding to one polarization antenna, arranged between the power division unit and the corresponding polarization antenna, used for switching the polarization direction of the combination of the at least two polarization antennas. The UAV countermeasure device and method with switchable radiation signal polarization realize the multi-polarization effect under one power amplifier unit, and have better countermeasure effect, lower cost and lighter weight.

A probe holder for a follow-type ultrasonic pipeline probe, belonging to the technical field of ultrasonic detector auxiliary equipment, includes a fixed cylinder, traction flanges, and a mounting frame mechanism. The inner sides of two traction flanges are respectively mounted to the outer sides of the front and rear ends of the fixed cylinder. Multiple sets of mounting frame mechanisms are provided, each including a support base, support arm, spring, torsion spring, and elevation arm. These multiple mounting frame mechanisms are installed on the outer side of the fixed cylinder. The outer diameter of the elevation arms of these multiple mounting frame mechanisms is larger than the inner diameter of the pipe to be inspected. Because the outer diameter of the elevation arms of these multiple mounting frame mechanisms adaptively adjusts with the inner diameter of the pipe, it can adapt to ultrasonic testing of pipes with a wider range of inner diameters. Furthermore, it ensures that the multiple probe arms distributed in a ring are in close contact with the detection and receiving surfaces of the ultrasonic probe under elastic force, maintaining a consistent spacing and thus enabling the ultrasonic detector to achieve better flaw detection results. This invention has promising application prospects.

The invention discloses a large-burial-depth gas pipeline detection device, which is applied to the technical field of gas pipeline detection, and is characterized in that a detection mechanism is arranged, a sealing assembly at the bottom of a box body and a shielding assembly in a top groove are opened, and then a detection assembly in the box body extends downwards through a bottom groove; the auxiliary sliding assembly assists the detection assembly to smoothly move in the box body, the buffer assembly provides buffer protection for the detection assembly in the detection process, the height between the detection assembly and the land is automatically adjusted according to the actual situation, normal detection and signal receiving are ensured, and the processing assembly upwards penetrates through the top groove and then starts to work. The detection assembly detects the large-burial-depth gas pipeline and transmits data to the processing assembly for processing and displaying, so that detection signals can be rapidly and accurately processed and analyzed, the accuracy of the detection result is further improved, and in the non-working state, the sealing assembly seals the bottom groove and protects the detection assembly.

The invention discloses a magnetic probe arrangement method for improving the magnetic detection effect of an underground anti-collision tool, and belongs to the technical field of oil and gas well drilling and completion engineering design research and development and construction. The method comprises the steps that in the design, a well for magnetic detection in the drilling process serves as a base point, and the detection range of a magnetic probe of the magnetic detection type anti-collision tool serves as the radius to make a virtual circle; the circle center of the to-be-detected sleeve is located on a virtual circle line; making two radius lines on the base point to be tangent to the sleeves on the round line, determining the outer diameter sizes of all the sleeves which can be detected by the magnetic detection type anti-collision tool according to the field condition, and determining the number of the magnetic probes which are arranged in the circumferential direction; arranging an underground anti-collision tool and a magnetic probe according to the outer diameter size; and carrying out magnetic detection operation by adopting the arranged anti-collision tool to obtain a detection result. Through the design of the magnetic detection type underground anti-collision tool, the magnetic detection effect is improved.

The invention discloses a detector control circuit, a laser radar and a detection method thereof. The detector control circuit comprises at least two stages of low-side drivers which are connected in sequence; the at least two stages of low-side drivers connected in sequence are connected with the power supply voltage of a plurality of gears and the detector, and are used for outputting the power supply voltage of one gear to the detector according to a control signal. By utilizing the scheme of the invention, the dynamic range of the receiving end can be expanded while a close-range blind area caused by stray light is optimized, and the measured reflectivity accuracy and the distance measurement accuracy are ensured.