4results about How to "Ensure accuracy" patented technology

A method and apparatus for spot-checking a visual inspection system are disclosed. The method includes: (210) obtaining a plurality of to-be-inspected images; (220) inspecting the plurality of to-be-inspected images to obtain defect types and / or parameters of a target object in the plurality of to-be-inspected images; and (230) confirming availability of the visual inspection system based on the defect types and / or parameters.

This disclosure relates to a device for maintaining a constant liquid level in 3D printing, comprising: a liquid tank for storing printing liquid; a printing platform for supporting printed samples, the printing platform extending into the liquid tank and capable of ascending and descending under the driving of a printing lifting device; a liquid level balancing block extending into the liquid tank; a linkage mechanism connecting the printing platform and the liquid level balancing block, capable of raising the liquid level balancing block when the printing platform descends; and the volume of the printing platform corresponds to the volume of the liquid level balancing block, satisfying the condition that the volume of the printing liquid immersed by the printing platform descending is equal to the volume of the liquid level balancing block leaving the printing liquid. The advantageous effect of the present invention is to use the volume of the balancing block to balance the liquid volume, ensuring that the liquid level remains constant at a fixed height during the 3D printing process, regardless of the vertical movement of the printing platform.

A sensing unit (100) for use in a time-of-flight image sensor and a demodulation method thereof. The sensing unit (100) for a time-of-flight image sensor may comprise: a first photosensitive region (102) comprising a pinned photodiode structure formed in a substrate (101) to generate photo-generated charges, the substrate (101) having a first doping type, the pinned photodiode comprising a first region having a second doping type and a second region located above the first region and having the first doping type; a first demodulation gate (103) used for transferring photo-generated charges in the first photosensitive region (102) to a first charge storage region (106); a second demodulation gate (104) used for transferring the photo-generated charges in the first photosensitive region (102) to a second charge storage region (108); a first transfer gate (109) used for transferring the photo-generated charges in the first charge storage region (106) to a first floating diffusion region (110); and a second transfer gate (111) used for transferring the photo-generated charges in the second charge storage region (108) to a second floating diffusion region (112).

This utility model provides a high-efficiency bar inspection device, comprising: a feeding station and several inspection modules arranged sequentially; a feeding mechanism for sequentially feeding several bars into the feeding station; a discharging mechanism including several movable parts arranged parallel to several fixed parts and forming discharging stations between them, a qualified receiving device corresponding to each of the discharging stations, and several recycling receiving devices corresponding to the inspection modules; the discharging stations are arranged sequentially in a horizontal direction; the movable parts move to abut against the fixed parts to close the discharging station or space themselves from the fixed parts to open the discharging station; and several transfer mechanisms for sequentially moving the bars along the inspection modules and discharging stations. This ensures that the discharging station corresponding to the bar's serial number opens accurately, discharging the bar into the corresponding receiving device, thus achieving bar inspection and automatic sorting and discharging.