4results about How to "Test applicable" patented technology

The application belongs to the technical field of valve testing, and specifically provides a valve testing device, which comprises a detection table, one side of the detection table is provided with a pre-detection feeding mechanism, the side of the detection table away from the pre-detection feeding mechanism is provided with a screwing mechanism, the front side of the detection table is connected with a discharging table, the rear side of the detection table is provided with an insertion type detection assembly, and the insertion type detection assembly is provided with a discharging mechanism; the valve testing device can automatically adjust valve clamping and testing parameters according to the specific size of the valve; in addition, the application of a visual perception system is combined, a pre-action principle is adopted, the valve body is automatically clamped and tested during valve testing, and unqualified products are automatically marked, so that manual intervention is not needed, the testing time is short, and the degree of automation is high.

The application discloses a preparation method of an electrochemical sensor for simultaneously detecting creatinine and uric acid, and relates to the technical field of medical detection. The technical scheme points of the application are as follows: ethanol, ethylene glycol and deionized water are uniformly mixed, then carbon nanotubes and anhydrous copper acetate are uniformly mixed with the mixture, and then the mixture is subjected to hydrothermal reaction, and after the reaction is completed and the mixture is cooled, the carbon nanotube / copper oxide / cuprous oxide nanocomposite is obtained by purification. In the application, the electrochemical sensor prepared by using the copper nanoparticle-related carbon nanocomposite can enhance the electron transmission capacity, thereby improving the electrochemical activity; meanwhile, the application can be used for detecting two biological molecules of creatinine and uric acid, has a low detection limit and a wide detection linear range, the creatinine detection limit is 0.002mM, the detection range is 0.01mM-1mM, the uric acid detection limit is 0.0004mM, and the detection range is 0.001mM-5mM.

The application discloses a kind of negative pressure three-axis automatic movement nondestructive testing device, including control system, XY moving assembly and scanning component.XY moving assembly contains X axis, Y axis and power component, X axis and Y axis are all by guiding guide rail and its two ends suction assembly constitute, suction assembly has the Z axis movement function of control vacuum chuck contact or separate from detection plane.Control system controls the suction assembly of X axis and Y axis to be alternately adsorbed in detection plane and keep still, while driving the shaft not adsorbed together or relative to power component moves, to realize the two-dimensional self-adapting step of device on detection plane.Scanning component carries probe and executes scanning along with device movement.The application further discloses a kind of negative pressure three-axis automatic movement nondestructive testing method.The application does not need external track, avoids workpiece surface damage by non-sliding step mode, and negative pressure adsorption makes it compatible with non-magnetic material, realizes to large plate high efficiency, high precision, full-automatic nondestructive testing.

This invention discloses a method for detecting recording devices based on electromagnetic signals, comprising the following steps: acquiring radio frequency signals in the environment; performing spectrum analysis on the radio frequency signals after filtering, denoising, and smoothing; searching for peak points belonging to the frequency band of the electromagnetic radiation signal of the recording device in the spectrum, and calculating the average peak interval; matching the peak interval with the frequency feature library of the recording device's AD conversion drive signal, and confirming the detection of the recording device if they are equal. This invention can detect unknown and concealed recording devices by utilizing the electromagnetic radiation signals generated by the AD conversion of the recording device during normal operation, and can locate the device by multiple detections from different directions. It is suitable for private occasions such as confidential meetings and private conversations, with an effective distance of 20 centimeters.