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148results about How to "No change required" patented technology

Method for real-time error correction of neurosurgery navigation puncture path based on near infrared spectrum

The invention discloses a method for real-time error correction of a neurosurgery navigation puncture path based on a near infrared spectrum, which belongs to a precision correction method of a surgical navigation system. The method comprises the following steps: firstly, extracting guidance information of a target path based on body data of a three-dimensional reconstruction body; secondly, coning the target path and extracting N pieces of guidance information for verifying puncture tracks on the conical surface; and thirdly, obtaining the target path and N optical curves for verifying the tracks according to optical parameters and a mathematical correlation model of image data, in virtue of a curvilinear trend matching algorithm of Hausdorff distance and curvature, obtaining a puncture track curve having the same variation tendency as a real-time near infrared optical signal in a tolerance range, determining a direction offsetting from the target path, calculating coordinate offset, performing real-time path correction, and guiding an operation. The method can be implemented simply at a quick speed, can be performed in real time, is convenient for clinical application and can be integrated in the surgical navigation system, thus the precision of the navigation system is greatly improved.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Fault-tolerant system and method for adjusting error correcting codes adaptively

The invention discloses a fault-tolerant system and method for adjusting error correcting codes adaptively. The fault-tolerant system comprises an environmental information sensing module, a fault-tolerant scheme selection module, an error correcting module and an object processing module. The environmental information sensing module is connected with the fault-tolerant scheme selection module and is used for obtaining information of factors which influence the reliability of data stored in the object processing module. The fault-tolerant scheme selection module is connected with the environmental information sensing module and the error correcting module and selects a mould generation and output fault-tolerant scheme according to the received reliability influence factors from the environmental information sensing module and the feedback object processing module health degree from the error correcting module. The error correcting module receives the fault-tolerant scheme transmitted from the fault-tolerant scheme selection module and is used for defecting and correcting the errors in the data transmitted by the object processing module. The object processing module is connected with the error correcting module and is used for initiating data read-write control operation, sending original data and tasks to the error correcting module and storing reliable data output by the error correcting module.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI

Fully-decoupled electronic hydraulic braking system and corresponding vehicle

The invention discloses a fully-decoupled electronic hydraulic braking system and a corresponding vehicle. The fully-decoupled electronic hydraulic braking system includes a electronic control unit, a motor, a braking pedal displacement sensor, a braking pedal, a secondary main cylinder, a pedal simulator, a decoupling cylinder, a main cylinder, a wheel cylinder, and a liquid storage device; a pipeline between the decoupling cylinder and the liquid storage device is provided with a normally closed solenoid valve of the decoupling cylinder; the main cylinder can be decoupled with the secondary main cylinder through the decoupling cylinder and is driven by the motor or is coupled with the secondary main cylinder and is driven by the secondary main cylinder. The fully-decoupled electronic hydraulic braking system can achieve active control and adjustment of hydraulic pressure without a high pressure energy accumulator, a pump, a hydraulic pipeline, and a solenoid valve, so the fully-decoupled electronic hydraulic braking system has no the problem of potential safety hazard of the high pressure energy accumulator and a disabled solenoid valve; the structure of the fully-decoupled electronic hydraulic braking system is simple, the main cylinder is not needed to be changed, and then the cost is reduced; and failure protection of the braking system can be achieved through interaction of the decoupling cylinder and the normally closed solenoid valve.
Owner:上海千顾汽车科技有限公司

Method and system for reading and writing SD card (Secure Digital Memory Card) based on ISO/IEC7816-3 interface

The invention provides a method and system for reading and writing an SD card (Secure Digital Memory Card) based on an ISO / IEC7816-3 interface. The method comprises the steps that: a terminal transmits data needing transmission to an intelligent card module through the ISO / IEC7816-3 interface; the intelligent card module composes a data frame according to a band standard which should be obeyed and transmitting the data frame to an SD card controller in the intelligent SD card through an SPI (Serial Peripheral Interface) bus; the SD card controller sends the data frame into a safety module SE inside the intelligent SD card and receives response of the safety module SE; the SD card controller transmits the response to the intelligent card module through the SPI bus; and the terminal obtains the response through the ISO / IEC7816-3 interface and performs the next operation based on the response. The method and system for reading and writing the SD card based on the ISO / IEC7816-3 interface, disclosed by the invention, solves the limitation of a universal SD card access method and has the advantages of wide application range, no need to change hardware and software of terminal equipment and low cost.
Owner:EASTCOMPEACE TECH

Plate structure multi-defect detection method based on DBSCAN and k-means algorithm

The invention relates to a plate structure multi-defect detection method based on DBSCAN and k-means algorithm. The method comprises the following steps: 1) collecting a damage signal of a plate structure, and performing difference processing on the damage signal and a health signal acquired under the same condition to acquire a difference signal; 2) acquiring a direct wave difference feature signal based on the difference signal; 3) determining candidate defect data points based on a pre-selected feature signal threshold; 4) performing defect quantitation and positioning by utilizing the DBSCAN and k-means algorithm according to the candidate defect data points. Compared with the prior art, the defect amount can be accurately judged by utilizing an intelligent algorithm when multiple defects are existent and the amount of the defect is unknown, the influences from the external noises, the frequency dispersion of the Lamb wave, the boundary reflection and the modal conversion at the defect can be effectively eliminated, the signal-to-noise ratio is improved, multi-defect can be accurately positioned, and the method has relatively high engineering application value.
Owner:EAST CHINA UNIV OF SCI & TECH

Method for protecting linux operation system on loongson hardware platform

The invention discloses a method for protecting a linux operation system on a loongson hardware platform. According to the method for protecting linux operation system on the loongson hardware platform, a core encryption method and a file system encryption method are used. Core encryption is implemented by encrypting a Linux initial RAM (random-access memory) magnetic disk. The core encryption method comprises the following steps of encrypting the Linux initial RAM magnetic disk at a core generation stage; and decoding the Linux initial RAM magnetic disk when the system is started. File system encryption is implemented by using a linux equipment mapping technology, after file system encryption is implemented, file system mounting cannot be carried out directly, an encrypted file system requires to be mapped, and data of the file system can be read or written after mounting the mapped file system. By the method for protecting the linux operation system on the loongson hardware platform, a Linux core process is improved, and the inner operation mechanism, the procedure principle and key data of the Linux core process are protected fundamentally. The method not only can be used for preventing software copyright infringement and protecting intellectual property rights in a business environment, but also can be used for an environment requiring encryption such as defense and military, and has an anti-cracking function and an information leakage preventing function.
Owner:SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD

Construction method for energy-saving modification of glass of existing glass curtain wall

The invention relates to a construction method for energy-saving modification of glass of an existing glass curtain wall. The construction method is characterized by comprising the steps that A, staff and equipment are placed to the required place through a basket; B, the to-be-modified glass of the existing glass curtain wall is cleaned and dried; C, a glass curtain wall paintjet is mounted; and D, temperature sensitive allochroic printing ink or ink is sprayed on the outer surface of the curtain wall glass. The invention further provides the glass curtain wall paintjet for realizing the construction method. The construction method has the beneficial effects that firstly, the influence on the glass of the existing glass curtain wall is small; secondly, due to the fact that the glass of the existing glass curtain wall is used, the modification cost is low; thirdly, the effect is good, specifically, the printing ink or ink containing vanadium dioxide is sprayed to the outer surface of the glass curtain wall, and the glass curtain wall can be modified into a fully intelligent energy-saving glass system having the equivalent activity external sunshading function; and fourthly, the reliability is good, specifically, the outer wall printing ink or ink is sprayed on the glass, bubbles are avoided, color is uniform, and durability is achieved.
Owner:NANJING 26 DEGREE BUILDING ENERGY SAVING ENG CO LTD

Valve lift control device of fully variable hydraulic valve mechanism and internal combustion engine

The invention discloses a valve lift control device of a fully variable hydraulic valve mechanism and an internal combustion engine, and belongs to the field of air distribution mechanisms and fuel supply systems of internal combustion engines. When a plunger of the valve lift control device ascends to the position where a circumferential annular groove and an oil leakage hole communicate, hydraulic oil in a plunger oil cavity and a piston oil cavity flows into an energy storage cavity through an axial straight groove, the circumferential annular groove, the oil leakage hole and a first low-pressure oil duct, and the pressure and amount of oil in the plunger oil cavity and the piston oil cavity are reduced, so that the maximum lift of a valve is reduced, and the valve falls back in advance. By controlling the rotation angle of the plunger, changing duration of communication of the circumferential annular groove and the oil leakage hole, adjusting the minimum effective circulation area formed by the circumferential annular groove and the oil leakage hole, and controlling the amount of hydraulic oil flowing out of the oil leakage hole, the maximum lift and descending time of the air valve are changed. The valve lift control device is simple in structure, reliable in operation, low in cost and suitable for internal combustion engines with cam shafts on the upper portions, lower portions and middles.
Owner:SHANDONG UNIV

Parallel ignition system for natural gas engine

ActiveCN103615347AImprove ignition conditions in different working conditionsNo change requiredMachines/enginesOther installationsIgnition coilEnergy expenditure
The invention relates to the field of ignition systems, in particular to a parallel ignition system for a natural gas engine, wherein the parallel ignition system can adapt to different working conditions of the natural gas engine. The parallel ignition system comprises an ignition controller, a DC power source, a first ignition coil T1, a second ignition coil T2, a first high-voltage diode D5, a second high-voltage diode D6, a high-voltage ignition wire and a sparking plug. One end of each primary ignition coil of the two ignition coils is connected with the ignition controller and then connected to the positive electrode of the power source, and the other end of each primary ignition coil of the two ignition coils is connected mutually and then connected to the ground together with the negative electrode of the power source; one end of each secondary ignition coil of the two ignition coils is connected with the positive electrodes of the two high-voltage diodes. The parallel ignition system can not only control ignition characteristics in a flexible mode according to the different working conditions of the natural gas engine but also can optimize ignition energy consumption, and improve ignition conditions of different working conditions of the natural gas engine. Meanwhile, the parallel ignition system has the advantages that the structure of the system is simple, ignition is reliable, and an engine body does not need to be altered.
Owner:HARBIN ENG UNIV

Energy-storage spring operating mechanism of low-voltage isolating switch

The invention discloses an energy-storage spring operating mechanism of a low-voltage isolating switch, which is installed at the top of the low-voltage isolation switch. The energy-storage spring operating mechanism comprises an operating shaft, shifting rods and a stroke compensation part, wherein the operating shaft is installed at the top of the low-voltage isolating switch and can rotate freely along a radial direction; two shifting rods are provided, are perpendicular to each other and are fixedly arranged at the bottom of the operating shaft; a structure of the stroke compensation part is as follows: a spring installation shaft is hinged onto the operating shaft, and a first elongated through hole is formed in a movable end of the spring; a spring sleeves the spring installation shaft; a rotating shaft is hinged to the top of the low-voltage isolating switch; a short arm and a long arm are respectively perpendicularly fixed on the rotating shaft; the bottom end of a first shaft is fixed between the long arm and the short arm and penetrates through the first elongated through hole; a second elongated through hole is formed in a movable end of the long arm, and a second shaft can be driven by the shifting rod to slide along the second elongated hole; and a cylindrical projection is fixedly formed at the bottom of the long arm. By designing the stroke compensation part, the energy-storage spring operating mechanism can ensure that the switch action is unrelated to the manual operation.
Owner:SCHNEIDER WINGOAL TIANJIN ELECTRIC EQUIP

Method for improving shipping space utilization rate of container ship and fastening device for container ship

The invention provides a method for improving container ship shipping space utilization rate and a container ship fastening device, and the method comprises the steps: providing a plurality of paired main guide rails which are distributed in the length or width direction of a standard container shipping space of a container ship, providing a plurality of fixed first fastening bases and a plurality of movable second fastening bases and arranging according to the following method that the multiple first fastening bases are fixedly arranged on the paired main body guide rails in pairs, and movably arranging the multiple second fastening bases on the paired main body guide rails in pairs, the two grouped first fastening seats and the two grouped second fastening seats are matched with each other and correspond to four corner pieces at the bottom of the container to be loaded; and adjusting the distance between the second fastening base and the first fastening base located on the same main body rail with the second fastening base according to the specification and size of the container to be loaded, the distance between the adjacent shipping space corner fitting bases on the ship and the distance between the hatch covers. The applicability and the loading rate of different container ships to various standard and non-standard container cargoes are improved.
Owner:吴涛
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