Abstract: The present invention discloses a piezoelectric patch-based real-time and high-precision bolt preload detection method and system. A piezoelectric patch is used as an ultrasonic excitation source and pasted on the head of a bolt, and the high-precision fitting relationship between the ultrasonic change of time-of-flight and the bolt preload is established according to the law of the ultrasonic change of time-of-flight of single echo with the stress so that the real-time detection of the bolt preload is realized by using the mathematical relationship. Compared with the previous method using ultrasonic probes, the present invention eliminates the error caused by the uncertainty of couplant thickness and further improves the measurement precision by using the change of time-of-flight of single echo. Meanwhile, the low-error rate measurement of the bolt preload is realized at a low cost and without affecting the structural performance.

Abstract: A display device is provided. The display device includes a panel. The panel includes a display region and a non-display region and has a normal direction in which the non-display region is adjacent to the display region. The non-display region includes a first conductive line and a second conductive line. A common voltage is applied to the first conductive line. The second conductive line is at least partially overlapped with the first conductive line. There is a distance between the first conductive line and the second conductive line in the normal direction. The distance is greater than or equal to 3500 ?, and less than or equal to 4500 ?.

Abstract: A remote controller includes a remote controller body including a control device configured to receive a remote-control command. The remote controller further includes an antenna and a holding mechanism movably connected to two opposite sides of the remote controller body, respectively. The holding mechanism is configured to hold a mobile terminal. The remote controller further includes a connecting mechanism connected between the remote controller body and the holding mechanism and configured to enable the holding mechanism to move relative to the remote controller body to be in an extended state or in a contracted state.

Abstract: Systems and methods are provided for multi-orientation flight. An unmanned aerial vehicle (UAV) may be capable of flight in a first orientation and a second orientation that may be different from the first orientation. For example, a UAV may include one or more electronic speed control (ESC) units that may control direction of rotation of one or more propulsion units depending on the orientation of the UAV, to generate lift for the UAV. The one or more propulsion units may include protective covers that may protect one or more rotating components of the propulsion units when the UAV is on a landing surface in the first orientation or the second orientation. The UAV may change orientation on the landing surface or while in flight, in response to a sensed condition and/or instructions from a remote user.

Abstract: An organic electroluminescent display panel is provided, comprising a planarization layer; a pixel electrode formed on the planarization layer; and an auxiliary electrode coated by the planarization layer. The planarization layer defines a contact hole extending to a top surface of the planarization layer to have the auxiliary electrode contacted with the corresponding pixel electrode. A display device comprising the organic electroluminescent display panel and a method for manufacturing the organic electroluminescent display panel are further provided.

Abstract: Improved techniques for testing an application to identify bugs. An API request body, which includes input data, is transmitted to a service to exercise the service. An error type response is received from the service, where the response indicates how the service handled the input data. The response is then used to determine an error type response coverage of the service. The coverage is then expanded by repeatedly performing a number of operations until a threshold metric is satisfied. For instance, in response to learning how previously-used input data impacted the coverage, new input data is generated. This new input data is designed to trigger new types of responses from the service. The new input is sent to the service, and a new error type response is received. These processes are repeated in an effort to expand the error type response coverage of the remote service.

Abstract: A signal transmission circuit board includes a main body and a first connecting unit connected with the main body. The first connecting unit includes a test pin area and an avoidance area adjacent to the test pin area, and the avoidance area is free of test pins.

Abstract: A remote controller includes a main body, a dial wheel mechanism arranged at the main body, and a controller configured to obtain rotation angle information of the dial wheel mechanism and control movement of an external device according to the rotation angle information. The dial wheel mechanism includes a support, a positioning member disposed at the support, and a rotating member rotatably disposed at the support. The positioning member includes an elastic arm. The rotating member is configured to rotate relative to the support, causing the elastic arm to abut against the support and to be elastically deformed.

Abstract: A method, apparatus, and storage medium for predicting information are described.

Abstract: A chip includes a substrate; macros placed on the substrate, which has a placement region being divided into sub-regions according to locations of the macros; and one or more vertical power stripes (VPSs) disposed in each sub-region. At least one VPS is not aligned with the VPSs of an adjacent higher or lower sub-region.

Abstract: A display device is provided. The display device includes a panel. The panel includes a display region and a non-display region and has a normal direction in which the non-display region is adjacent to the display region. The non-display region includes a conductive line which includes a first section and a second section. The first section has a first extension direction and the second section has a second extension direction that is different from the first extension direction. A first conductive layer is disposed on the first section a first distance away from the first section in the normal direction. A second conductive layer is disposed on the second section a second distance away from the second section in the normal direction which is different than the first distance.

Abstract: A method for data hand-shaking based on EtherCAT protocol is disclosed, the method is implemented by an EtherCAT slave device, and includes: receiving a data packet from a previous device; obtaining self-related data from or inserting feedback data to the data packet for generating a processed packet; transmitting the processed packet to a next device; receiving a returned packet from the next device; transmitting the returned packet to the previous device; performing a packet diversion procedure to at least one of the data packet, the processed packet and the returned packet for generating a backup packet, wherein at least part of the content of the backup packet is identical to the content of the data packet, the processed packet or the returned packet; analyzing the backup packet; and, filtering the backup packet for obtaining designated application data with respect to other EtherCAT slave devices.

Abstract: A display panel, a display panel manufacturing method, and a display screen are provided. The display panel includes: a substrate, the substrate including a plurality of sub-pixel regions, each of the sub-pixel regions including a first region and a second region, the first region being provided with the substrate, a buffer layer, and a pixel circuit layer, and the second region being provided with the substrate; and a first electrode disposed on the second region of each of the sub-pixel region and directly contacting the substrate. Each sub-pixel region is divided into the first region and the second region, the first region is provided with the substrate, the buffer layer and the pixel circuit layer, the second region is provided with the substrate and the first electrode directly contacting the substrate, and no inorganic film is provided between the first electrode and the substrate.

Abstract: The present disclosure provides an exhaust system for an internal combustion engine, the exhaust system comprising a first exhaust pipe, a muffler and a second exhaust pipe, and the muffler is mounted between the first exhaust pipe and the second exhaust pipe, the first exhaust pipe is located upstream of the muffler, and the second exhaust pipe is located downstream of the muffler; the second exhaust pipe comprises a single exhaust pipe, the single exhaust pipe having one end connected to a downstream end of the muffler, and the single exhaust pipe being provided with a plurality of connecting holes; or, the second exhaust pipe comprises the single exhaust pipe and a dual exhaust pipe branch, the single exhaust pipe having one end connected to the downstream end of the muffler and the other end connected to the dual exhaust pipe branch.

Abstract: Disclosed are a reliability test fixture and an online test device for a flexible display component. The fixture comprises a support and a rotating shaft rotatably mounted on the support. An engagement recess for fixing a flexible display component is provided in an axial direction on the surface of the rotating shaft. A test module used to detect an electrical parameter of an internal circuit of the flexible display component is disposed inside the rotating shaft. The test module has a test contact for electrically connecting to the flexible display component. During a test, the flexible display component is fixed in the engagement recess and is electrically connected to the test module.

Abstract: The present invention discloses an exoskeleton which comprises a force balance back-carrying unit composed of a back-carrying assisting unit and a front-carrying assisting unit, a hip unit and a lower limb supporting unit, wherein the force balance back-carrying unit transfer the weight of a back-carrying load and/or a front-carrying load to the lower limb supporting unit through the hip unit to achieve the effort of assisting for the back-carrying load and/or the front-carrying load, wherein the length of the hip unit can be adjusted on the left-right plane and the upper-lower plane to adapt to wearers with different body types. On the other hand, the exoskeleton of the present invention is also provided with a buffer device to reduce the impact of the loads on the exoskeleton. The exoskeleton of the present invention also adopts quick-release joints, so as to modularize each part and standardize a docking interface of each module.

Abstract: Disclosed is a sintered body, a sintered permanent magnet and preparation methods. The sintered body comprises Nd2Fe14B crystal phase as a primary phase and a rare earth rich phase as a grain boundary phase and has a composition expressed by composition formula RaBbGacCudAleMfCogFebalance; R is one or more selected from rare earth elements, and R must comprise Nd; M is one or more selected from the group consisting of Zr, Ti, and Nb; a satisfies 13%?a?15.3%; b satisfies 5.4%?b?5.8%; c satisfies 0.05%?c?0.25%; d satisfies 0.08%?d?0.3%; e satisfies 0?e?1.2%; f satisfies 0.08%?f?0.2%; g satisfies 0.8%?g?2.5%; grains in Nd2Fe14B crystal phase have average size L of 4-8 ?m, grain boundary phases have average thickness t with unit of ?m; the relation of t and L is: ?=t/L; and ? is defined as 0.009???0.012. The present disclosure improves diffusion efficiency of heavy rare earth elements RH.

Abstract: An antenna module includes an antenna box and a first connection wire. The antenna box can include a first antenna, a second antenna, a first connection terminal, a second connection terminal and a housing. The first and second antennas are located in the housing and the housing has a first opening collectively exposing a portion of the first connection terminal and a portion of the second connection terminal. Each of the first and second antennas is adapted to receive or transmit wireless signals according to one of a plurality of wireless communication standards and the first and second antennas are electrically connected to the first and second connection terminals, respectively. The wireless communication standards can be different from each other.

Abstract: A flexible display substrate includes a flexible substrate and a conductive layer on the flexible substrate. The conductive layer and the flexible substrate are divided into a bending area and a non-bending area along an extension direction. A thickness of the conductive layer in the bending area is smaller than a thickness of the conductive layer in the non-bending area.

Abstract: A semiconductor device includes a charge-absorbing structure disposed over a substrate; an insulating layer disposed over the charge-absorbing structure; a semiconductor layer disposed over the insulating layer; a plurality of first doped regions and a plurality of second doped regions disposed in the semiconductor layer, wherein the first doped regions and second doped regions extend in a first direction and are alternately arranged along a second direction that is different than the first direction, and the plurality of first doped regions and the plurality of second doped regions have different conductivity types; a source and a drain disposed respectively on opposite sides of the plurality of first doped regions and the plurality of second doped regions and extend in the second direction; and a gate disposed on the plurality of first doped regions and the plurality of second doped regions and extends in the second direction.