53results about How to "Troubleshoot setup issues" patented technology

The invention discloses a backlight module and a liquid crystal display comprising the backlight module. The backlight module at least comprises a backboard, at least one light source, at least two supporting frameworks and at least one optical film, wherein the backboard at least comprises a base plate and a plurality of lateral plates surrounding the edge of the base plate; at least one light source is arranged on the backboard; at least two supporting frameworks are arranged on two relative sides of the backboard respectively; at least one optical film is arranged on the light source, and the optical film is provided with at least two fixed hole respectively corresponding to the supporting frameworks; and the supporting frameworks are inserted into the fixed holes respectively so as toprovide at least one pair of tensile force for the optical film.

The invention discloses a mobile terminal comprising a housing, a main board structure, a diversity reception circuit, and an NFC feed source. A receiving space is defined in the housing. A metallic frame is disposed on the circumferential wall of the receiving space. The metallic frame is equipped with two first slits in order to define a first section insulated from other sections. The main board structure is arranged in the receiving space. A first clearance region through which magnetic lines may pass is defined between the main board structure and the first section. The diversity reception circuit and the NFC feed source are connected with the first section. According to the mobile terminal, a radiator of a diversity antenna is disposed on the metallic frame to achieve NFC so as to solve a NFC antenna disposition problem, effectively reduce antenna design cost and antenna space, prevents excessive segments on the metallic frame, and guarantee than the NFC antenna cannot influence other antennas on the mobile terminals.

The invention provides a rolling bearing fault diagnosis method based on optimized variational mode decomposition, and the method comprises the steps: selecting 4096 sampling points of an original vibration signal as input signals of variational mode decomposition; optimizing the modal number and the secondary penalty factor of variational modal decomposition by adopting an improved bat algorithmand taking the minimum average envelope entropy as an optimization target; decomposing the original vibration signal by using the optimized parameters, and solving an energy entropy and an energy spectrum entropy of a decomposed component; taking the kurtosis, the correlation coefficient and the marginal spectrum entropy as screening criteria to screen the components, and solving main frequency distribution characteristics of the reserved components; and taking the energy entropy, the energy spectrum entropy and the main frequency distribution characteristics as characteristic vectors and inputting the characteristic vectors into a support vector machine so as to realize fault diagnosis. According to the method, the variational mode decomposition parameters are optimized through the improved bat algorithm, and the feature vectors are obtained according to the optimized parameters, so that manual parameter determination is avoided, the optimal solution can be found more quickly, and therecognition rate of the fault state is improved.

The invention discloses a display device and a driving method. A backlight module of a liquid crystal display panel is formed by multiple straight-down type micro-LEDs so as to replace a traditional side entry type. Every tiny LED duplexing is reused as a light texture identifying emitter to emit light; the light can fully reflect at the position of a grain valley, and the light has reflection aswell as transmission in the grain ridge, thus the reflection light intensity at the valley position is caused, and the light reflected at the ridge position is weak; multiple optical grain identifyingreceiver is added between an opposite substrate and a substrate base plate; the grain is identified according to the intensity of the reflective light received by the optical texture identifying receiver, thus the pre-positioned texture identification can be realized. Due to the straight-down type micro-LED design, the light path identified by the optical texture can be solved; therefore, the display device can be used as the optical grain identifying emitter, thus the optical grain identifier does not need additional light source; the full screen design of the liquid crystal display panel can be realized under the function of the pre-positioned grain identification.

The invention relates to the technical field of backlight, in particular to a novel uniform light direct type LED (light-emitting diode) back lighting light distribution lens which comprises a lens body. The lens body comprises an incident surface, an emergent surface and a bottom composite surface, the normal of an arbitrary point on a section line of a composite subsurface in a section and the central axis of the lens body are intersected below the lens body when the composite subsurface is split along the central axis of the lens body, fresnel interface reflection light reflected by the emergent surface is reflected in a direction far away from the central axis of the lens body, accumulation of the light in a central area above the lens is effectively reduced, and light uniformity of an emergent light field is enhanced. In the same light-emitting area and on the premise of the same illumination uniformity on a diffusion plate, the distance between LED light sources can be increased, the number of LEDs is decreased, the distance between each LED light source and the diffusion plate is shortened, so that the cost and the size of a direct type LED back lighting system are reduced.

The embodiment of the invention discloses a transfer printing film prepared by means of digital printing. The transfer printing film comprises a carrier membrane, a water-borne wax layer and a color image-text layer which are superposed in sequence. The embodiment of the invention further discloses a preparation method of the transfer printing film prepared by means of digital printing and an application of the transfer printing film. According to the transfer printing film prepared by means of digital printing and the preparation method and application thereof, the transparent visual inspection problem of image-text printed by the transfer printing film, the problem of micro-distortion transfer printing of the transfer printing film, the problem of printing plate omission, the problem of reducing printing procedures and lowering losses and the problem of efficient industrial production conventionally are solved, and the transfer printing film and the preparation method and application thereof are particularly suitable for small-single and short-single low-cost operation; the problems of white ink underpainting and glue setting of a transfer printing function layer are also solved; the problem of combining adhesion of the array powdered ink color image-text layer and a separating agent coating and the problem of separating the array powdered ink color image-text layer and the separating agent coating from a carrier base membrane together are even solved; and moreover, volatile organic compounds (VOC) are hardly generated, and therefore the printing environmental protection property is greatly improved, and epoch-making significance is achieved.

The invention discloses a method for connecting an external scaffold with a wall for large-span and ultra-story-height structures. Connecting pieces (2) are embedded on the edge beam column of large-space concrete main body structures (1) and are used as wall connecting points (3); when an ultra-story-height structure is met, vertical inclined pulling steel pipes (5) are adopted to be connected with the external scaffold (4); included angles among the vertical inclined pulling steel pipes (5) and the main body structures (1) are 45-60 degrees; when a large-span structure is met, the external scaffold (4) is reliably connected with the main body structures (1) by adopting transverse inclined pulling steel pipes (7); and the included angle among the protections of the transverse inclined pulling steel pipes (7) on a horizontal plane and the external scaffold (4) is 45-60 degrees. The method solves the setting problem of the wall connecting piece of the external scaffold of the large-span and ultra-story-height structures, is applicable to public constructional engineering with difficult fixation of the wall connecting pieces of the large-span and ultra-story-height structures, can effectively guarantee construction safety, meets construction requirements, effectively utilizes resources, lowers engineering investment, and has wide market application prospect.

The present invention provides a smart home control method and system. The system comprises key control modules, output execution modules, an environmental parameter detection sensor module, a valve control module, a door lock control module and a networking module; the key control modules are used for controlling home appliances of a strong electric channel type through keys; the output execution modules are correspondingly connected with the key control modules through configuration and are used for obtaining key information from the key control modules, executing the key information and informing the key control modules of received key control information; the networking module is used for sending the output signals of the other modules to at least one control end through a wide area network; and the key control modules, the output execution modules, the environmental parameter detection sensor module, the valve control module, the door lock control module and the networking module are in communication with one another through a CAN bus. According to the smart home control method and system of the invention, a CAN bus data broadcast communication mode is adopted, and therefore, the smart home control method and system have the advantages of simple configuration, flexible networking, low maintenance cost and high economic practicability.

The invention discloses an embedded piezoelectric branch damping optimization design method aiming at a universal blade disk structure, belonging to the technical field of aero-engine vibration suppression. Firstly, the finite element model of the first blade-disk sector in the blade-disk structure is established, and the parameters of the embedded piezoelectric branch damping optimization are inputted. Then the periodic boundary conditions are set for analysis, and all the alternate elements of the components on the pre-analysis part are sorted, and projected back to the same components on the first blade disk sector as the pre-analysis part. Replacing the materials of all the alternate units of the components of the first blade disk sector with piezoelectric materials in order, and connecting all the piezoelectric materials of the replaced components into a whole by means of electric circuits; finally, the modal analysis results are extended to the whole blade disk, and the modal electromechanical coupling coefficients of the whole blade disk are calculated. By electromechanical coupling, the damping of the blade disk structure is optimized. The invention realizes batch setting and greatly reduces workload.

The invention relates to a scraper conveyor heavy-load adaptive start control device, which comprises an adaptive start controller, a speed controller, a digital switching switch, a vector controller,an inverter and a motor. The adaptive start controller comprises a torque observer, a speed observer and an adaptive rate controller. The torque observer receives a torque current feedback Ist_fdb signal of the frequency converter vector controller and a flux amplitude psi s signal, and outputs a real-time estimation torque Te_est signal after operation; the speed observer receives voltage and current signals of the vector controller, and obtains a motor real-time speed valve omega_est signal through operation of an MRAS speed sensorless speed estimator; the adaptive rate controller analyzesthe real-time estimation torque Te_est signal and the real-time speed valve omega_est signal, and generates a corresponding torque current given value Ist_ref signal through operation; the vector controller receives a torque current given value Ist_ref signal command and generates a pulse PWM signal to drive a three-phase inverter module; and finally, the three-phase inverter module outputs an expected current and voltage to drive the motor to operate.

The invention relates to a portable electric hydraulic jack. The technical scheme includes that a hydraulic jacking device of the jack is arranged on one side of a base, a mount is arranged on the other side of the base, an oil tank is arranged on one side of the mount facing the hydraulic jacking device, and a motor is arranged on the other side of the mount. The oil tank is made of elastic materials and in a 'concave' bag type structure, a concave opening of the oil tank is clamped on a telescopic arm of the hydraulic jacking device, an opening end of the oil tank is hermetically fixed on the mount, an oil pump device is arranged in the oil tank, an oil inlet of the oil pump device is arranged towards the oil tank, oil supply passages are arranged on the mount and the base, one ends of the oil supply passages are connected with the oil pump device, and the other ends of the oil supply passages are connected with the hydraulic jacking device. The concave opening of the oil tank having the 'concave' bag type structure is clamped on the telescopic arm of the hydraulic jacking device, the problem about arrangement of the oil tank is solved, and meanwhile, the size of the oil tank is reduced due to the fact that the oil pump device is arranged in the oil tank directly.

The invention discloses a temperature prediction method and system for an aircraft-borne electronic device. The method comprises the steps: acquiring the current flight state of the aircraft; Obtaining a random configuration network temperature prediction model corresponding to the flight state; Acquiring temperature associated data at the current moment corresponding to the flight state; Taking the temperature data of the current moment as the input of the random configuration network temperature prediction model, and performing predicting to obtain the temperature difference between the current moment and the next moment of the to-be-tested electronic equipment; And calculating the temperature of the to-be-tested electronic equipment at the next moment according to the temperature difference and the temperature of the to-be-tested electronic equipment at the current moment. The temperature prediction of the aircraft-borne electronic equipment is realized by adopting the random configuration network temperature prediction model, so that the prediction accuracy is improved, the calculation complexity is reduced, and the generalization capability is improved.

The invention discloses an insulator contour detection method based on a hybrid ant colony algorithm, and the method comprises the following steps: carrying out the gray normalization of a target insulator image, generating a gray histogram, and carrying out the linear stretching and noise filtering of the gray histogram; using an ant colony clustering algorithm for insulator image segmentation, and using a particle swarm algorithm for parameter optimization of clustering center number and radius. According to the method, the target insulator image can be accurately segmented, support is provided for fault detection of the insulator, and normal operation of a power system is guaranteed.

The invention provides directional radar with a periodic intrusion detection function. The directional radar comprises multiple radar devices connected through a control module, wherein the multiple radar devices are arranged around a target object; each radar device comprises a receiving plate and a transmitting plate, the transmitting plate transmits 12.5 G microwave signals in real time, and the receiving plate is connected with the control module; the control module comprises a signal receiving module, a calculation module and a wireless signal transmitting module which are sequentially connected, the signal receiving module is connected with the receiving plate of each radar device, and the wireless signal transmitting module is connected with the control module at the mobile terminal. With the adoption of the directional radar, the problem of failure in report and false report due to the fact that a traditional infrared monitoring mode is greatly affected by the environment factor, the monitoring range is wider, and a defense area can be set.

The invention discloses a container-type multifunctional shower room, which comprises a container. A dressing room and a shower room are arranged in the container. A public water room is arranged on the right side of the front part of the container, and a partition wall is arranged between the changing room and the shower room. , there is a shower room door on the partition wall, a water heater cabinet, a wardrobe and a shoe cabinet in the dressing room; a shower head is installed in the shower room, and drainage holes are opened on the floor of the shower room; the public water room and the interior of the container pass through the rear partition It is separated from the left partition; the front side of the public water room is provided with a front hinge plate, which includes a front upper hinge plate and a front lower hinge plate, and the public water room is divided into Water closet and sink. The invention solves the fixing problem of the furniture in the mobile shower room based on the container to prevent it from moving during the transportation of the container, and the public water room based on the container solves the problem of setting up the domestic water place in the public area of ​​the construction site.