Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

88results about How to "Fewer spins" patented technology

Method and bridge for improving inductance measurement precision of Maxwell bridge

The invention provides a method and a bridge for improving inductance measurement precision of a Maxwell bridge, and belongs to the field of measurement testing. According to the method, an inductive voltage divider is combined with a fixed standard capacitor and a standard resistor, and a method for adjusting the output voltage of the inductive voltage divider is used for adjusting the equivalent capacitance and resistance. Simultaneously, the invention has a function of automatic auxiliary balance; the precision measurement for inductance value can be realized by simply completing the balance of the bridge; and the convergence rate of the bridge is greatly improved. Aiming at a shock absorption branch which is required to be introduced for the adding of the automatic auxiliary balance amplifier, the invention provides a compensation circuit for compensating the error caused by the shock absorption branch. In order to overcome the influence of the output impedance of the inductive voltage divider, the invention provides a double-pole high-precision voltage follower with a buffer output stage. By the invention, the speed for measuring inductance is increased, the measurement precision is improved, the service life of the bridge is prolonged, and the reliability of the bridge is improved.
Owner:NAT INST OF METROLOGY CHINA

CT and X-ray luminescence computed dual-mode synchronous tomography method

ActiveCN105796121AFewer spinsSimplify your imaging workflowRadiation diagnosticsAnatomical structuresFailure rate
The invention discloses a CT and X-ray luminescence computed dual-mode synchronous tomography method. Small animal X-ray luminescence computed tomography and computed tomography (CT) can be achieved synchronously, and a more accurate imaging object anatomical structure and molecular imaging information are provided. It is guaranteed that an XLCT projection and a CT projection are collected at the same location and same time by reducing the CT projection angle number and setting the CT projection angle number to be the same as that of the XLCT or be in a diploid relation with that of the XLCT; meanwhile, by means of a compressive sensing principle, a few-angle reconstruction algorithm achieving image total variation minimization is adopted for the CT projection, and a precondition matrix and wavelet transformation are introduced into XLCT iteration reconstruction so as to reduce ill conditioning of reconstruction. According to the CT and X-ray luminescence computed dual-mode synchronous tomography method, synchronous tomography of CT / XLCT can be achieved, dual-mode tomography processes are simplified, the experimental difficulty is reduced, the imaging time is reduced, the experimental failure rate is decreased, a radiation dosage is decreased, an error caused by objecting moving in the imaging process is avoided, and image registration and fusion difficulties are reduced.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY

Wedge locker adopting forward and reverse thread transmission locking manner

The invention discloses a wedge locker adopting a forward and reverse thread transmission locking manner. The wedge locker comprises a main groove body, an anti-disengaging block, a screw, a fixed wedge block and a movable wedge block set. The fixed wedge block is fixedly connected to one end of the length direction of the main groove body, the movable wedge block set is connected to the length direction of the main groove body, and one end of the movable wedge block set cooperates with the fixed wedge block. The anti-disengaging block is fixedly connected to the other end of the length direction of the main groove body, and the screw is in threaded connection with the anti-disengaging block and the movable wedge block set simultaneously. The screw comprises two sections of threads, one section of thread is a right-handed rotation forward thread, the other section of thread is a left-handed rotation reverse thread, and the movable wedge block set and the anti-disengaging block are provided with right-handed rotation forward threads or left-handed rotation reverse threads corresponding to the position of the screw. Two-stage anti-disengaging design is adopted, so that the potentialsafety hazard caused by the fact that the screw disengages from a part to be scattered is completely eradicated; the operation is more direct due to locking design and reduction of the rotation frequency; and the application range of the wedge locker is also greatly widened due to breakthrough of the rising height.
Owner:成都爱米瑞科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products