38results about How to "Mentioned accuracy" patented technology

The invention relates to an artificial antique floor, which comprises a panel, a core board and a bottom board stacked in sequence. The panel includes a surrounding frame, a plurality of plates, and locking strips. The surrounding frame is arranged on the core board, and all the plates are arranged side by side on the surrounding frame. In the enclosed area, a locking strip is provided between two adjacent plates, and the core plate is provided with a lock that matches the locking strip. The locking strip includes a base plate and two clamping plates, and the two clamping plates are along the length of the base plate. The direction is parallel and set on the lower surface of the substrate; the outer side of each card board is provided with ribs, and after the locking strip is set between two adjacent plates, the ribs on the card board can be snapped into the lock on the core board. The upper surface of each plate is engraved with a hollow or convex pattern; the upper surface of the panel is covered with a transparent protective layer. The beneficial effects of the present invention are: when a plate is damaged, it is easy to replace, and the remaining undamaged parts can be reused, which saves resources. In addition, a hollow or convex pattern is carved on the upper surface of the plate, which can increase the floor space. aesthetics.

The invention relates to an insert bolt and a bushing manufacturing method using a bushing. In order to assemble the bolts stably, the bushing is clamped in the groove connected by the base material bolt, and the embedded bushing can play a role in guiding the bolt connection. The role of position, thus referring to accuracy and stability. In addition, the bushing can be fixed to the base material by the outer protrusions provided on the outer side of the bushing, and the bolts can be prevented from coming out of the bushing by the inner protrusions provided on the inner side of the bushing.

The invention discloses a swing frame for a mini-sized rotor dynamic balancing machine. A machine frame of the swing frame is a rigidity guide frame which is fixedly arranged; the machine frame is matched with supporting blocks in a guiding mode at a horizontally swinging linear direction of the supporting blocks through a guide mechanism; the guide mechanism comprises the machine frame, guide rods and guide channels; the guide rods and the guide channels are correspondingly formed on the supporting blocks and extend along the swing direction of the supporting blocks; the number of the guide blocks is at least two; the guide rods are separately arranged by two guide rods; the guide channels and the guide rods are arranged in a one-to-one correspondence mode; damping devices are damping units which are arranged at two back-to-back sides of the swing direction of the supporting blocks in an elastic damping check mode. Accordingly, the existing machine frame which has an elastic supporting function is replaced by the rigidity machine frame, the frame self-rigidity influence to guide swing of supporting blocks is reduced through guide movement of the supporting blocks on the machine frame, and the sensitivity of the integral swing frame during the processing of measuring the mini-sized rotor dynamic imbalance performance is improved.

The invention relates to a chain conveyor and a chain breaking protection method. The conveyor includes an endless closed chain, a wheel set that drives the chain to circulate, a speed measuring device that detects the speed of each wheel in the wheel set, and a processor that controls the rotation of the wheel set according to the speed signal sent by the speed measuring device. The set includes a first wheel arranged at a low position, a second wheel arranged at a high position and vertically staggered from the first wheel, and a plurality of reversing wheels arranged between the first wheel and the second wheel, the first wheel, the second wheel Wheels and a plurality of reversing wheels make the chain include vertical uplinks and downlinks. An uplink broken chain protection device is provided on the uplink section, and a downlink broken chain protection device is provided on the downlink section. When the uplink section and / or the downlink section When the chain is broken, the processor will stop the wheelset according to the speed signal, and the uplink broken chain protection device and / or the downlink broken chain protection device will catch the broken chain.

The invention discloses a method for assessing service lives of fuses by determining activation energy of melts. The method comprises the steps that accelerating aging test of different accelerated stresses is conducted on a plurality of sets of fuses, metal electromigration service lives of the melts under different temperatures are obtained according to a plurality of sets of test data, the activation energy of the melts is calculated in the curve fitting method, parameters of service life assessing models of the fuses are determined, and therefore the service lives of the melts under different conditions can be calculated, and the activation energy of the melts is determined in a test method to assess the service lives of the fuses. Compared with empirical data adoption in the prior art, the method can improve accuracy of assessment of the service lives of the fuses.

The invention relates to a folding automatic charging mechanical arm and an electric vehicle vehicleried with the mechanical arm. The mechanical arm is arranged at the bottom of the electric vehicle, and charging of the electric vehicle is achieved by plugging the mechanical arm into a socket. The mechanical arm comprises a swing arm fixing plate, a head joint, a connection plate, a parallel joint unit, a plug and a camera, wherein one end of the swing arm fixing plate is fixed to the bottom of the electric vehicle; one end of the head joint is connected with the other end of the swing arm fixing plate so that the mechanical arm can rotate around the head joint; the connection plate is an inverted U-shaped strip slot, and is connected with the head joint; the parallel joint unit is connected with the connection plate in a sliding mode; the parallel joint unit is located in the connection plate when the electric vehicle is not charged, and extends out of the connection plate and rotates around parallel joints when the electric vehicle needs to be charged; the plug is mounted at the tail end of the parallel joint unit; and the camera is mounted on one side face of the plug. Compared with the prior art, automatic charging is realized, a charging device is small in size, and using is convenient. The vehicle-mounted automatic charging mechanical arm fills up the blank in China and is of great significance on promoting the technological development of electric vehicles.

The invention relates to the field of voice signal processing, in particular to a data labeling method and device based on self-learning algorithm. The method comprises a speech recognition step, a text comparison step, a natural language processing algorithm evaluation step, a natural language processing algorithm prediction step, a data labeling step, a quality inspection step and a self-learning step. The text comparison step is used for comparing a plurality of recognition texts, labeling difference parts of texts and performing sentence breaking processing. The data labeling step is usedfor performing data labeling on an optimal pre-labeled text for a plurality of times by referring to an original recognition text and a prediction text of the difference parts, so as to form a plurality of groups of data labeling texts. The self-learning step is used for inputting the optimal labeled text and a corresponding audio signal into a speech recognition engine, wherein the speech recognition engine is iteratively trained based on the self-learning algorithm. According to the labeling method and device, the data labeling time is greatly saved, the data labeling quality and the data labeling efficiency are effectively improved, the training support is provided for various artificial intelligence products, and the production effect of intelligent products is improved.

The invention discloses a determination method of a high voltage direct current converter commutation overlap angle, aiming to solve the problem that a traditional method for calculating a commutation overlap angle can not take nonideal factors including background harmonics into consider to cause poor design performance of a wave filter. The method comprises the following steps of dividing the working period of a converter into six commutation sections and six non-commutation sections; establishing a differential equation to each commutation section by considering factors such as background harmonic interference, asymmetric fundamental voltage, asymmetric converter trigger angle distances, commutation impedance deviation and the like; and accurately calculating the commutation overlap angle. The invention efficiently enhances the calculation efficiency when ensuring the accuracy and can enhance the design quality of an alternating current converter.

The invention discloses an automatic imaging method and system. The method includes: acquiring image data of a target object placed on a scanning bed; determining first position information of the target object by a processor based on the image data; determining by the processor based on the image data second location information related to a scanning area of ​​the target object; and scanning the target object by an imaging device based on the first location information and the second location information. The automatic imaging method reduces the user's operation time before clinical scanning, and can also avoid the user's mistakes in manual operation, thereby improving the efficiency and accuracy of clinical examination.

The invention relates to an intelligent detection system of special metallurgical vehicle wheel set bearings. The system comprises a rotating platform, a hydraulic pump, a touch display, a personal computer, a computer cabinet, a signal switchboard, a signal acquisition card, an 8-path relay output module, a vibration sensor, a rotating speed sensor, a hydraulic sensor, connecting wires for each part, a signal communication module, a driving control module, a data acquisition and processing module and a data warning and report generating module. A wheel set is placed on the rotating platform, the computer controls the wheel set to be lifted to a designated position, vibration acceleration sensors are placed at horizontal positions of bearing at both sides of the wheel set, and belt pulleys are driven by a motor to rub with the wheel set. When the rotating speed keeps constant, the wheels stay in the uniform rotation state, vibration signals are started to be collected, test data is stored after collection, and the wheel set is put back to the original position. The software can analyze whether the wheel set has bearing faults through the rotating speed, the current bearing model and the vibration signal. With the detection system, the accuracy rate and the real-time performance are effectively increased, the detection time is reduced, and the detection cost is reduced.