50results about How to "Avoid missing defects" patented technology

The invention discloses equipment for detecting foreign matter in bottles, comprising a bottle-gripping and rotary device, an image collector which is arranged at one side of a bottle and is used for collecting images of rotary liquid in the bottle, and an image processing device for judging whether foreign matter exists in the liquid in the bottle, wherein, the bottle-gripping and rotary device comprises a bottle rotating sleeve which is supported at a supporting seat and driven to rotate by a drive mechanism, a clamping jaw seat which is connected with the bottle rotating sleeve and can rotate with the bottle rotating sleeve, a clamping jaw in pin-jointed connection with the clamping jaw seat with the bottom end thereof being provided with a clamping block for clamping bottleneck and the top end thereof being in pin-jointed connection with one end of a connecting rod, a pull rod positioned in the bottle rotating sleeve with the bottom thereof being connected with the other end of the connecting rod, and a lifting mechanism arranged at the upper end of the pull rod for driving the pull rod to move in the bottle rotating sleeve. The invention has the advantages of avoiding the defect of missed detection due to foreign matter depositing at the bottom of the bottle when the foreign matter in the bottle rotates with the bottle and using the clamping jaw to only clamp the bottleneck which is in favor of collecting images of the foreign matter.

A comprehensive malicious code detection system inside a power production system and a method thereof, comprising: anti-malicious code client software is installed on a station terminal in a factory station, and the anti-malicious code client software is used to check and kill the factory station terminal malicious code and form historical record messages; the production control area is equipped with a management area acquisition machine; the station terminal is connected to the management area acquisition machine; the plant station terminal and the management area acquisition machine are connected to the attached server Connected; effectively avoiding the historical record message formed by the anti-malicious code client software in the prior art, which is only stored locally and not transmitted to the management area acquisition machine, making the information collected by the management area acquisition machine not complete enough, and the management area acquisition The message congestion of the machine makes the defect of history record message omission during delivery.

The invention relates to the field of speech information processing technology and microphone array signal processing and especially relates to the fields of voice activity detection, voice detectionand speech recognition and interaction and the like. The method can effectively detect time frame of a voice activity and can also carry out dynamic regulation on threshold according to noise transform through two dynamic threshold update policies, by taking variability of noise environment into full consideration and based on three groups of auditory features capable of reflecting the ratio of noise energy in the total energy. The detection result can be corrected again through a detection result buffer mode, thereby preventing the defect of detection miss between continuous active voice frames; a noise power spectral density matrix is subjected to adaptive update according to the speech detection result; and furthermore, speech enhancement can be carried out through a Weiner filter, so that the noise can be suppressed under the minimum mean square error criterion.

The invention discloses a manual ultrasonic flaw detection scanning device for defect detection of train wheels, which comprises components such as a scanning arm, a carrier mounting frame, a probe fixture, and a scanning auxiliary positioning mechanism. The scanning arm adopts a retractable mechanical structure, its length can be adjusted, and it has an automatic locking function. The carrier mounting frames are respectively installed at both ends of the scanning arm, and the probe fixtures are respectively mounted on the carrier mounting frames The fixture is installed on the crossbeam, which can be moved and fixed on the fixture installation beam according to the detection needs. The scanning auxiliary positioning mechanism is installed on the inner side of the carrier mounting frame and rolls along the top of the rim during the detection process, which can scan stably device. The present invention can be used in the ultrasonic detection mode of sending and receiving and spontaneous receiving at the same time, and has the advantages of convenient manual operation, adjustable probe distance, fixed relative position, stable detection effect and the like.

The invention relates to a low-frequency array eddy current positioning and quantitative analysis method. The technical solution includes the following steps: A. calibrate the detection and judgment standard; B. locate the defect; C. quantify the defect by using the three-dimensional C scanning image processing function ; The present invention eliminates the interference of spatially scattered magnetic flux leakage through the magnetic shielding technology of the magnetic pot and the shielding coil, and improves the defect resolution. During the detection process, the 8 detection coils can be independently imaged, and the detection sensitivity is always consistent, avoiding the Defect missed detection, one operation can detect the inner wall defect of the heating surface steel pipe covered by the probe, without reciprocating operation, by adopting the low-frequency array eddy current positioning quantitative analysis method, taking advantage of the advantages of low-frequency array eddy current probe and three-dimensional C-scan stereo image imaging display, it can effectively solve the problem The positioning and quantification of corrosion defects on the inner wall of the heating surface tube of the utility boiler improves the detection accuracy and field work efficiency, and ensures the reliable and stable operation of the heating surface tube of the utility boiler.