The invention designs a three-dimensional manipulator structure for a camera to scan a steel plate to carry out measurement. The three-dimensional manipulator structure comprises manipulator bodies and a base, wherein the base is a cuboid bracket with eight pulleys, is used for supporting and is convenient to move; sliding rails are attached to the two sides of the bracket and can be supplied for the manipulator bodies to slide (a first dimension); the bottom ends of the manipulator bodies are attached to the bracket to be used for fixing a linear array light source; in addition, the manipulator bodies are used as the sliding rails self (a second dimension), and each of which is provided with a longitudinal small manipulator body; each small manipulator body is used as a sliding rail (a third dimension), is provided with a connecting frame and can move up and down; the linear camera is fixed to the connecting frame; and the height of the linear camera can be adjusted according the size of a field of view. Meanwhile, with matching of control of a photoelectric sensor, electromechanical integration is realized, and scanning and picture collection running of equipment is smooth, reliable, safe and efficient.

Three-dimensional manipulator structure for camera to scan steel plate to carry out measurement

The invention relates to an ultrasound phased array online testing method for internal quality of a thin-walled CFRP (carbon fiber reinforced resin matrix composite) pipe fitting and belongs to the technical field of ultrasound phased array online testing for internal quality of the thin-walled CFRP. The method is applicable to nondestructive testing experiments for measuring internal quality of the CFRP pipe fitting with wall diameter range being 20-30 mm and wall thickness range being 0.6-1.5 mm, that is, the outer diameter of the thin-walled CFRP pipe fitting is 20-30 mm and the wall thickness is 0.6-1.5 mm. The testing method is mainly used for testing defect types such as internal delamination, hollowing and loosening and the like of the thin-walled CFRP pipe fitting.

Ultrasound phased array online testing method for internal quality of thin-walled CFRP (carbon fiber reinforced resin matrix composite) pipe fitting

The invention discloses a method and an apparatus for realizing automatic scanning of scanning equipment, applicable to the control technical field The method comprises the steps of controlling a three-dimensional scanner to scan a three-dimensional outline of a to-be-scanned object when the to-be-scanned object is detected in a preset region so as to obtain an outline image of the to-be-scanned object; recognizing a target region in the outline image, and generating a corresponding scanning strategy according to the target region; and generating a control instruction according to the scanning strategy to control the ultrasonic scanner to execute a scanning operation By virtue of the method, the scanning equipment can scan the to-be-scanned object in an unmanned operating condition, so that the automatic degree and the use efficiency of the scanning equipment are improved

Method and apparatus for realizing automatic scanning of scanning equipment

The invention provides a method for automatically adjusting the azimuth of a probe by non-contact detection. A device needing to be used by the method for automatically adjusting the azimuth of the probe comprises a probe azimuth adjusting device, a probe and workpiece surface relative angle and distance detection device, and the nondestructive detection probe; the probe and workpiece surface relative angle and distance detection device is connected to the probe to directly face the detected object surface to real-timely obtain the relative angles and positions of the detected object surface and the probe surface; the detection device outputs a control signal to the probe azimuth adjusting device according to an automatic azimuth adjustment algorithm; and the probe azimuth adjusting devicecontrols the position and angle of a probe bracket to automatically adjust the azimuth of the probe. The probe angle can be automatically adjusted to enable the acoustic beam incident surface (detection surface) of a probe emission section detected object to be at a fixed angle.

Method for automatically adjusting azimuth of probe by non-contact detection

The invention belongs to the technical field of ceramic film detection devices, and particularly relates to a special auxiliary device for online ultrasonic detection of a ceramic film. The special auxiliary device comprises a base, wherein a rolling shaft group is arranged on the base; the ceramic film is arranged on the rolling shaft group; an inverted U-shaped bracket is arranged in the middlepart of the base; two side wall plates of the bracket are positioned at both ends of the rolling shaft group; a screw rod is arranged at the upper part of the bracket, and is parallel with the rollingshaft group; the screw rod is connected with a sleeve block by threads; a motor II is connected with the screw rod in a driving way; a water spraying device is arranged at the bottom part of the sleeve block, and is connected with a water pump through a pipeline; the sleeve block is connected with an ultrasonic probe through a telescopic rod; a water tank is arranged on the base, is positioned under the bracket, and is connected with the water pump through a water intake pipe. The special auxiliary device has the advantages that according to the characteristic of strong water permeability ofthe ceramic film, the problem of water spraying to the surface in the detection process is solved; the ultrasonic probe and the water spraying device are connected in a fit way, so that while the water amount is reduced, the detection efficiency is improved.

Special auxiliary device for online ultrasonic detection of ceramic film

The invention relates to a water spray type automatic scanning device for ultrasonic TOFD nondestructive testing. The water spray type automatic scanning device for ultrasonic TOFD nondestructive testing consists of a probe clamping portion, a coupling water circulating portion, a probe spacing PCS adjustment portion and a three-dimensional movement portion, wherein the probe clamping portion is used for carrying testing probes and enabling the probes to be in close contact with a tested workpiece through certain coupling pressure; the probe clamping portion is connected with the PCS adjustment portion through an L-shaped connecting piece to realize accurate adjustment of probe spacing PCS; the PCS adjustment portion is connected with the three-dimensional portion through an L-shaped connecting piece to realize probe height adjustment, ultrasonic TOFD-B scanning and D scanning; the coupling water circulating portion is responsible for filling water in water spray probes to form a coupling water layer on a contact surface between the workpiece and the probes, and can realize cyclic utilization of coupling water. The water spray type automatic scanning device for ultrasonic TOFD nondestructive testing has the advantages that the ultrasonic intensity and signal stability can be kept during automatic scanning, the influence of human factors on testing results is reduced, the testing efficiency is improved and the wear of the probes due to direct contact between the probes and the workpiece is avoided.

Water spray type automatic scanning device for ultrasonic TOFD nondestructive testing

The invention provides a device for automatically adjusting the direction of a detection probe in water immersion ultrasonic detection and an adjusting method. The device for automatically adjusting the direction of the detection probe comprises an upper computer, an FPGA (Field Programmable Gate Array) motion control module, a probe adjusting support and a water immersion ultrasonic detection probe, wherein the water immersion ultrasonic detection probe is used for transmitting ultrasonic waves to enter the surface of a detected object, and receiving a reflected wave signal of the surface (a detected surface) of the detected object; the reflected wave signal is subjected to analog-digital conversion and data acquisition and then is inputted to the upper computer; the upper computer is used for outputting a control signal to the FPGA motion control module according to the reflected wave signal amplitude of the upper surface (an incident surface) of the detected object and a probe direction adjustment algorithm; the FPGA motion control module is used for controlling the direction of the probe, adjusting the rotation of a motor in the support, and realizing the adjustment on the direction of the ultrasonic detection probe.

Chen Zhenhua

Papers

Water spray type automatic scanning device for ultrasonic TOFD nondestructive testing

Device for automatically adjusting direction of detection probe in water immersion ultrasonic detection and adjusting method

Analysis on wave propagation characters in austenitic stainless steel weld and application in ultrasonic time of flight testing