Abstract: An industrial controller implements a closed-loop control technique referred to as generic PID control, or GPID, which makes explicit the basic principles and methods of quantitatively combining the past, present and future in controller design and tuning. Generic PID control is backward compatible in design and in tuning with current industrial control software interfaces, and as such can be easily adopted onto existing control systems. Generic PID is also widely applicable to artificial intelligence (AI) and data analytics, such as machine learning, where error-correction is core to all algorithms.

Abstract: Provided are a box frame and an LED display. The box frame comprises a frame border for installing an LED module, the frame border comprises a plurality of connecting seats and a plurality of frames, each connecting seat connects two adjacent frames, the connecting seat and the frame are alternately connected to form a closed structure; and the frame comprises an inner plate, an outer plate, a partition, a first reinforcing structure and a second reinforcing structure, the inner plate and the outer plate are arranged at intervals, the partition is connected between the inner plate and the outer plate, so as to divide space between the inner plate and the outer plate into a first groove and a second groove, the first reinforcing structure is arranged in the first groove and the second reinforcing structure is arranged in the second groove.

Abstract: An illuminated floor tile, includes a rear body, an LED lamp panel disposed on the rear body, and a glass cover provided over the LED lamp panel and secured to the rear body by an adhesive layer. The LED lamp panel includes a plurality of lamp beads fixedly arranged on a PCB board. The rear body includes a plurality of supports extending from a bottom hosing and through an opening of the PCB, such that a top surface of the supports is higher than the lamp beads and supports the glass.

Abstract: This application provides a data distribution method includes: A network device buffers first data, where the first data is data of a service that is provided by a server for a first terminal device; the network device receives N first data requests sent by N second terminal devices; and when data requested by the N first data requests is data provided by the server based on the service, the network device intercepts the N first data requests and sends the buffered first data to the N second terminal devices. This can reduce a plurality of connections that are used to transmit data of a same service and that exist on a channel between the server and the network device, thereby occupying a smaller downlink bandwidth to transmit the data of the same service from the server to the network device.

Abstract: The present disclosure provides a fly-eye lens module, a lighting device, and a DLP optical engine. The fly-eye lens module includes a first plastic fly-eye lens, a second plastic fly-eye lens, and a glass triangular prism structure. The first plastic fly-eye lens is provided on a surface thereof with a first circular region, and the second plastic fly-eye lens is provided on a surface thereof with a second circular region. The first and the second circular regions are both configured as a fly-eye structure having a concave-convex structure, and are respectively fixed to two sides of the cuboid glass structure by a bonding agent. The second and the first plastic fly-eye lenses are disposed such that the light spot emitted from the point light source is incident to the fly-eye lens module via the first plastic fly-eye lens, and is emitted from the second plastic fly-eye lens.

Abstract: The present invention relates to a method for preparing a thermoelectric thick film. The method includes: determining a brittle-to-ductile transition temperature of a thermoelectric material; rolling the blocky thermoelectric material within a temperature range above the brittle-to-ductile transition temperature and below a melting point; parameters of the rolling being as follows: a linear speed of rollers is 0.01 mm/s to 10 mm/s, preferably 0.1 mm/s to 5 mm/s, and an amount of pressing each time of the rollers is controlled at 0.0005 mm to 0.1 mm, preferably 0.001 mm to 0.05 mm; repeating the rolling until a thermoelectric thick film with a specified thickness is obtained; and annealing the obtained thermoelectric thick film; a temperature of the annealing being 100° C. to 800° C., preferably 300° C. to 500° C., and a duration of the annealing being 10 to 500 hours, preferably 100 to 300 hours.

Abstract: The present disclosure relates to a vibrating mirror adjustment apparatus, system and method, and a projector. The vibrating mirror adjustment apparatus includes: an image feature acquiring module, an image identifying module, a resolution extracting module, and a vibrating mirror control module. The vibrating mirror adjustment apparatus identifies the category of the projected image and the resolution information corresponding to the projected image based on the acquired information feature of the projected image, then identifies whether vibration of the vibrating mirror is used to improve a resolution of an image, and further automatically controls the on or off state of the vibrating mirror, such that an optimal projection display effect is achieved, and visual enjoyment of a user is greatly improved.

Abstract: Embodiments of the present disclosure relate to a smart tracking-based projection method and system. The method includes: acquiring information of a real space of a spatial information capturing unit, constructing a 3D model of the real space, and acquiring first position information of a projection picture; acquiring target image information of a target tracking unit, and acquiring second position information of a tracking target based on the target image information; acquiring a target projection region based on the 3D model and the second position information; acquiring, based on the target projection region, rotation information desired by the projection unit; and controlling, based on the rotation information, a drive unit to operate such that the projection picture reaches the target projection region.

Abstract: Embodiments of the present application provide a method, apparatus, device, and system for customizing motion-based projection. The method executed by an electronic device includes: acquiring a three-dimensional spatial model corresponding to an actual projection environment; acquiring a mounting position of a projection device and positions of at least two target projection regions configured by a user in the three-dimensional spatial model; and sending the mounting position of the projection device and the positions of the at least two target projection regions in the three-dimensional spatial model to the projection device. According to the present application, the movement path for motion-based projection may be customized, the target projection regions traveled by the movement path can be accurately positioned with no need of on-site adjustment, modified and reused at will.

Abstract: An environment experiencing method and apparatus in augmented reality, and an electronic device are provided. The environment experiencing method in augmented reality includes: an item select instruction is received; a simulated environment of a specified item is generated based on the item select instruction; a simulated image is generated and applied to the simulated environment; and an interaction action is received from a user and the interaction action is responded to.

Abstract: Embodiments of the present application relate to the technical field of projection, and in particular, relate to a projection method and a projection device. The projection method includes: acquiring a projection image and an environmental image when a screen picture is projected to a projection region, wherein the environmental image includes an image when a predetermined projection screen picture is projected to the projection region or an image when no screen picture is projected to the projection region; regulating an aperture based on the projection image and the environmental image, wherein the aperture is configured to control a light flux projected to the projection region. Therefore, by adjusting the light flux, impacts caused by the stray light may be mitigated, and a relationship between projection contrast and luminance may be better coordinated, such that the projection contrast and luminance are effectively balanced and hence projection quality is improved.

Abstract: Embodiments of the present disclosure, provide a projection image anti jitter method and apparatus, and a projector. With the projection image anti jitter method, jitter data of a projection lens is captured; jitter characteristic information and offset data are acquired by calculation; and the projection image is adjusted based on the offset data.

Abstract: Embodiments of the present disclosure provide a projector and a projection system. In the projector, a projection light source, a polarizing beam splitting prism, and a projection lens are disposed in a first direction, and the polarizing beam splitting prism is disposed between the projection light source and the projection lens; a polarized light converting component, the polarizing beam splitting prism, and an LCOS imaging chip are disposed in a second direction, and the polarizing beam splitting prism is disposed between the polarized light converting component and the LCOS imaging chip, wherein the second direction is perpendicular to the first direction.

Abstract: Embodiments of the present disclosure relate to the technical field of digital projection and display, and in particular, relate to an automatic focusing projection method and system. The embodiments provide an automatic focusing projection method, which is applicable to an automatic focusing projection system. The automatic focusing projection system includes a ranging unit, a projection unit, and a reflection unit. The method includes: acquiring a depth image from the ranging unit, and acquiring a vertical projection distance from the ranging unit to a projection plane based on the depth image; acquiring position information of a center point of a projection picture in the depth image based on an elevation angle of the reflection unit and the vertical projection distance; acquiring a projection distance between the projection unit and the projection picture based on the position information; and performing focus adjustment on the projection unit based on the projection distance.

Abstract: An unmanned store is provided. The unmanned store includes a projection device, a rotation device, a functional keypad, and a control system. The projection device may project a virtual image to a real space of the unmanned store; the rotation device is connected to the projection device, and is configured to drive the projection device to rotate such that the virtual image moves in the real space; the functional keypad includes a functional key, and may send a key signal to a control system in response to the functional key being pressed; upon receiving the key signal, the control system switches the commodity information displayed by the projection device based on the key signal.

Abstract: Embodiments of the present disclosure relate to a zooming projection method and a projector. The projector includes a focusing device and a lens movable along an optical axis. The method includes: acquiring a projection distance between the projector and a projection position; adjusting the lens to a target position for projection by the focusing device in response to the projection distance being within an optical zooming range; and scaling a projection image and projecting the scaled projection image in response to the projection distance being not within the optical zooming range.

Abstract: The present invention relates to a method for preparing a thermoelectric thick film. The method includes: determining a brittle-to-ductile transition temperature of a thermoelectric material; rolling the blocky thermoelectric material within a temperature range above the brittle-to-ductile transition temperature and below a melting point; parameters of the rolling being as follows: a linear speed of rollers is 0.01 mm/s to 10 mm/s, preferably 0.1 mm/s to 5 mm/s, and an amount of pressing each time of the rollers is controlled at 0.0005 mm to 0.1 mm, preferably 0.001 mm to 0.05 mm; repeating the rolling until a thermoelectric thick film with a specified thickness is obtained; and annealing the obtained thermoelectric thick film; a temperature of the annealing being 100° C. to 800° C., preferably 300° C. to 500° C., and a duration of the annealing being 10 to 500 hours, preferably 100 to 300 hours.

Abstract: A biocompatible membrane including a crosslinking agent, a hydrophilic material, a hydrophobic material, and a solvent; the biocompatible membrane can implement simultaneous regulation of oxygen and glucose, thereby improving the stability and service life of a biocompatible membrane solution, a preparation method for the biocompatible membrane and an implantable biosensor.

Abstract: Provided is a locking device, comprising a first lock body and a second lock body; the first lock body comprises an angle rotating disc base (11), an angle rotating disc (12) and a lock plate (13), the angle rotating disc (12) can rotate around its own axis and the angle rotating disc base (11) has a first mounting surface; the second lock body comprises a fixed base (21) and a spring lock (22), the fixed base (21) is provided with a second mounting surface, and a limit surface facing one end face of the angle rotating disc (12); one end face of the angle rotating disc (12) facing the limit surface is provided with a plurality of bevels (121) at intervals along circumferential direction; rotating the angle rotating disc (12) can make the limit surface fit with different bevels (121) to adjust the included angle.

Abstract: Embodiments of the present disclosure propose a method for controlling projection of a projection module, a projection system and a storage medium. The method for controlling projection of the projection module includes: obtaining a projection environment where the projection module is located, and determining a position of a target person according to the projection environment; and planning the best projection position in the projection environment according to the projection environment and the position of the target person. The best projection position in the projection environment is planned according to the position of the target person, so that the projection picture projected by the projection module can be adaptively changed along the position of the target person to fit with the current status of the target person to improve the perception experience of the user.