Abstract: A display substrate and a display apparatus are provided. The display substrate includes a base substrate, and gate lines and data lines cross with each other to define pixel units. Each pixel unit includes a first transistor and a second transistor, an active layer of the first transistor includes a first contact portion and a second contact portion, an active layer of the second transistor includes a third contact portion and a fourth contact portion, the first contact portion is electrically connected to the corresponding data line, the second contact portion is electrically connected to the third contact portion, and the fourth contact portion is electrically connected to the first electric pole. Along the second direction, a maximum distance between the first contact portion and the corresponding gate line is not less than a maximum distance between the fourth contact portion and the same gate line.

Abstract: Environmental test equipment for the cooperative control of salt spray concentration and relative humidity, comprising: a dry salt spray generation system, an air conditioning system, a mixing chamber, a test chamber and an electric control cabinet; in accordance with the principle of conserving salt content and moisture content before and after mixing, the environmental test equipment obtains a salt spray concentration relationship formula and a relative humidity relationship formula between: environmental parameters in the test chamber, dry salt spray environmental parameters in the dry salt spray generation system, and air conditioning environmental parameters in the air conditioning system; after determining environmental test parameters required in the test chamber, the salt spray concentration relationship formula and the relative humidity relationship formula are used to obtain: temperature parameters and relative humidity parameters required to be set in the dry salt spray generation system, and tempe

Abstract: A bird feeder includes a feeding component and a first camera, where the feeding component is provided with a feeding zone. The first camera is provided at or beyond an edge of the feeding component and shoots from or beyond the edge of the feeding component towards the feeding zone, and captures first image data. The bird feeder designed in the present application attracts birds to perch and feed via the feeding component, while the first camera positioned at the edge or outside the feeding component captures images or videos of the bird feeding activities to address the difficulty in bird observation and shooting, which enables the recording of detailed feeding activities without disturbing the birds which are feeding, thereby providing more stable and comprehensive documentation of bird feeding activities. This facilitates observers' examination of bird feeding processes, demonstrating significant potential for widespread adoption and practical application value.

Abstract: The present disclosure discloses a magnetic device for induction heating thereof that relates to the field of induction heating technologies. The magnetic device includes at least four coils that are even numbers, wherein the at least four coils are equally divided into two groups, and the two groups of coils are symmetrically arranged around an axis thereof; and a driving unit arranged on a symmetrical central axis of the coil and configured to drive a metal material to be heated to rotate. The present disclosure provides the even number of coils combined to form an annular coil device, so that a larger and more uniform magnetic field is generated in a center of the annular coil device, which can be more favorable for improving an eddy current heating effect thereof.

Abstract: A real-time monitoring device for an amount of surface salt deposition comprises a host and a monitoring probe. The host generates a fixed frequency AC excitation signal and transmits it to the interdigital electrode inside the monitoring probe. And then the host analyzes a feedback signal to obtain an information of impedance value. The amount of salt deposition on the interdigital electrode surface is determined by a predetermined relationship curve between the amount of salt deposition and the impedance value, and the actual amount of salt deposition in the environment can be obtained. The monitoring device can change the relative humidity of the environment around the interdigital electrode by adjusting the temperature, so that the salt deposited on the surface of the interdigital electrode absorbs moisture and forms a liquid film, achieving real-time monitoring of the amount of salt deposition on the surface of the interdigital electrode.

Abstract: A passive hummingbird water feeder and a feeding method thereof. By setting up an air cavity pipe, a delivery pipe, and a water storage bladder, and based on the siphon principle, water is introduced from the container into the water storage bladder without power with water level maintained, allowing water filling directly from above the container. The design simulates the foraging habits of hummingbirds, and enables photographing of flowers and birds.

Abstract: The present invention belongs to the field of shooting, and provides a shooting method and camera based on multi-camera linkage. The first camera is a fixed wide-angle camera, and tracks and acquires the position of the shooting target in real time. The image processing technology is used to analyze the composition quality and determines an optimal second camera shooting position coordinate. The control module sends a rotation instruction to enable the second camera to track the shooting target in real time, so as to ensure that the shooting target keeps the center position in the close-up image. When it is analyzed that the shooting target occupies the proper proportion and angle in the picture, the second camera is started to track and shoot, and during shooting, the second camera is zoomed and rotated according to the position of the shooting target, so that better image shooting is achieved.

Abstract: A bird feeder includes a feeding component and a first camera, where the feeding component is provided with a feeding zone. The first camera is provided at or beyond an edge of the feeding component and shoots from or beyond the edge of the feeding component towards the feeding zone, and captures first image data. The bird feeder designed in the present application attracts birds to perch and feed via the feeding component, while the first camera positioned at the edge or outside the feeding component captures images or videos of the bird feeding activities to address the difficulty in bird observation and shooting, which enables the recording of detailed feeding activities without disturbing the birds which are feeding, thereby providing more stable and comprehensive documentation of bird feeding activities. This facilitates observers' examination of bird feeding processes, demonstrating significant potential for widespread adoption and practical application value.

Abstract: A passive hummingbird water feeder and a feeding method thereof. By setting up an air cavity pipe, a delivery pipe, and a water storage bladder, and based on the siphon principle, water is introduced from the container into the water storage bladder without power with water level maintained, allowing water filling directly from above the container. The design simulates the foraging habits of hummingbirds, and enables photographing of flowers and birds.

Abstract: A hummingbird shooting system includes a feeding assembly and a camera, the feeding assembly including an suck component and an extension component, the suck component being used for suck of a hummingbird, the extension component being connected to the suck component, and the extension component being used for extending the suck component to a designated shooting position opposite to the camera for the camera to capture an image of the hummingbird in a pre-set area according to shooting requirements when the hummingbird is taking sugar water; where the image of the hummingbird includes: at least one of the hummingbird, the suck component, and the extension component. The hummingbird shooting system designed in the present application may shoot an image of the hummingbird by simulating a real scene where the hummingbird takes the sugar water in nature when it is taking the sugar water.

Abstract: The present invention discloses a bird photographing method, a readable storage medium, an electronic device and a bird feeder, wherein: a bird approaching and staying on the feeding tray is detected, and a photographing mechanism photographs the bird and judges the pre-composition; if the pre-composition is determined to conform to composition rules, the bird is determined as a subject, and the lens focal length is adjusted according to the position information, and video materials are obtained by continuously shooting from the first side to the second side of the subject; if the pre-composition is determined not to conform to composition rules, the photographing mechanism switches to standby or off mode. The present invention is simple in structure and intelligent, and ensures the subject properly positioned in the images, and the automatic, clear and complete photographing of birds facilitate the observation and recording of bird lovers and scientific researchers.

Abstract: The present invention belongs to the field of shooting, and provides a shooting method and camera based on multi-camera linkage. The first camera is a fixed wide-angle camera, and tracks and acquires the position of the shooting target in real time. The image processing technology is used to analyze the composition quality and determines an optimal second camera shooting position coordinate. The control module sends a rotation instruction to enable the second camera to track the shooting target in real time, so as to ensure that the shooting target keeps the center position in the close-up image. When it is analyzed that the shooting target occupies the proper proportion and angle in the picture, the second camera is started to track and shoot, and during shooting, the second camera is zoomed and rotated according to the position of the shooting target, so that better image shooting is achieved.

Abstract: The present invention discloses a bird photographing method, a readable storage medium, an electronic device and a bird feeder, wherein: a bird approaching and staying on the feeding tray is detected, and a photographing mechanism photographs the bird and judges the pre-composition; if the pre-composition is determined to conform to composition rules, the bird is determined as a subject, and the lens focal length is adjusted according to the position information, and video materials are obtained by continuously shooting from the first side to the second side of the subject; if the pre-composition is determined not to conform to composition rules, the photographing mechanism switches to standby or off mode. The present invention is simple in structure and intelligent, and ensures the subject properly positioned in the images, and the automatic, clear and complete photographing of birds facilitate the observation and recording of bird lovers and scientific researchers.

Abstract: An array substrate includes sub-pixels arranged in an array, scan lines, and data lines on a base substrate, with any one of the sub-pixels including a pixel electrode and a switch transistor; wherein the pixel electrode is connected to a drain electrode of the switch transistor, a gate electrode of the switch transistor is connected to one of the scan lines, a source electrode of the switch transistor is connected to one of the data lines; and an active layer of the switch transistor of the sub-pixel is located between the pixel electrode of the sub-pixel and the data line connected to the sub-pixel.