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117results about How to "Overcome failure" patented technology

Method and apparatus for detecting vulnerable atherosclerotic plaque

Methods and devices are disclosed for detecting vulnerable atherosclerotic plaque, or plaque at risk of reducing blood flow in a vessel, by identifying a region of elevated temperature along a living vessel wall. The disclosure that human atherosclerotic plaque with measurable temperature heterogeneity has the morphological characteristics of plaque that is likely to ulcerate provides a new and sensitive technique for detecting and treating these dangerous plaques before myocardial infarction and its consequences occur. The disclosed methods are advantageous over conventional plaque detection techniques because they are capable of differentiating between those plaques that are at great risk of rupture, fissure, or ulceration, and consequent thrombosis and occlusion of the artery, and those that are not presently at risk. Infrared heat-sensing catheters useful for identifying potentially fatal arterial plaques in patients with disease of the coronary or other arteries are also described. In some embodiments a coherent infrared fiber optic bundle is employed to radially and longitudinally explore a luminal wall to identify inflamed, heat-producing, atherosclerotic plaque. Certain other methods and devices are disclosed which are particularly suited for non-invasively identifying and then monitoring the progression or amelioration of an inflamed plaque in a patient, and for monitoring for onset of inflammation in an implanted arteriovenous graft. Also disclosed are thermocouple basket catheters and thermistor basket catheters which are also capable of detecting temperature heterogeneity along a vessel wall.
Owner:BOARD OF RGT THE UNIV OF TEXAS SYST

Fault-tolerance framework for an extendable computer architecture

A computer system having a fault-tolerance framework in an extendable computer architecture. The computer system is formed of clusters of nodes where each node includes computer hardware and operating system software for executing jobs that implement the services provided by the computer system. Jobs are distributed across the nodes under control of a hierarchical resource management unit. The resource management unit includes hierarchical monitors that monitor and control the allocation of resources. In the resource management unit, a first monitor, at a first level, monitors and allocates elements below the first level. A second monitor, at a second level, monitors and allocates elements at the first level. The framework is extendable from the hierarchy of the first and second levels to higher levels where monitors at higher levels each monitor lower level elements in a hierarchical tree. If a failure occurs down the hierarchy, a higher level monitor restarts an element at a lower level. If a failure occurs up the hierarchy, a lower level monitor restarts an element at a higher level. Each of the monitors includes termination code that causes an element to terminate if duplicate elements have been restarted for the same job. The termination code in one embodiment includes suicide code whereby an element will self-destruct when the element detects that it is an unnecessary duplicate element.
Owner:ROSELLI DREW SCHAFFER +2

A built-in permanent magnetic brushless DC motor control system for no position sensor

The invention relates to an embedded permanent brushless DC motor non-position sensor control system, composed of a microprocessor controller, a IPM module and a drive unit, a current detection circuit, a phase voltage detection circuit, an output display circuit, a control input circuit, an embedded rotor structured permanent brushless DC motor, a drive and control power source, etc. The invention judges the position of rotor by detecting variation of inductance of stator winding indirectly according to the character that the inductance of rotor winding of the embedded rotor structured permanent brushless DC motor is the function of rotor position theta. In the embedded rotor structured permanent brushless DC motor with star-shaped connection adopted by stator winding, when self inductance of two phase windings therein are equal, the position is the counter potential zero-crossing point without phase connection. Therefore, adopting non-connection phase voltage to ground continuously in one PWM period, and comparing the difference value, to judge non-connection phase counter potential zero-crossing point, and lagging behind for 30 degrees electric angel as phase-exchange time of next time. The method of the invention is indirect induction method. The non-position sensor control method of indirection induction method is nothing to do with rotating speed of motor, so that the invention overcomes the problem of malfunction at low speed of the conventional non-position sensor control method-the detection method of counter potential zero-crossing point. The invention can work reliably at ultra-low speed even if the rotating speed of motor is close to zero.
Owner:CHONGQING KECEN MOTOR MFG

Automatic gain control system in orthogonal frequency division multiplexing receiver and method

InactiveCN101826848AOvercome Synchronous Correlator FailureOvercoming inaccuracies in energy estimatesGain controlRadio transmission for post communicationAutomatic controlRadio frequency
The invention belongs to the technical field of the wireless digital communication, particularly relates to an automatic gain control system in an orthogonal frequency division multiplexing receiver and a method. An antenna of the orthogonal frequency division multiplexing receiver system is sequentially connected with a band-pass filter, a radio-frequency amplifier, an orthogonal demodulator, an analog-to-digital converter, a time domain power processor, a gain controller, a baseband digital gain amplifier, a frame synchronic judger, a frequency domain balancer, a decoder, a frequency domain processor and a gain generator. The time domain power processor, the gain controller, the baseband digital gain amplifier, the frequency domain processor and the gain generator form an automatic gain control system. The frequency domain processor consists of a comparison judger and an energy estimator. The automatic gain control system can prevent the valid signal from being submerged by slowly-decreasing signals, overcomes the problems such as the invalidity of synchronic correlator caused by the signal oscillation because of the variation of the gain, obtains a stable gain value, and improves the frame detection rate and the decoding success rate.
Owner:FUDAN UNIV

Method for forming Pt-modified NiAl+Ni3Al thermal barrier adhering layer on surface of nickel-based super alloy

The invention relates to a method for forming a Pt-modified Beta-NiAl+Gamma'-Ni3Al thermal barrier coating adhering layer on the surface of nickel-based super alloy (c). Specially speaking, the surface (a) of a coating is a Pt+Beta-NiAl phase, and the inner part (b) of the coating is a Pt-Gamma-Ni+Gamma'-Ni3Al phase Due to the double-phase structure, the problem of martensite phase transformation in the traditional thermal barrier coating adhering layer is solved as the difference between the coating and the base aluminum is larger, and the aluminum diffuses rapidly, the oxidation resistance of the coating is guaranteed and simultaneously, the adhering property of the coating and the base is combined, and compared with the traditional adhering-layer material, the adhering layer has superior advantages. In the invention, the Pt+Beta-NiAl+Gamma'-Ni3Al coating is formed in a powder embedding and aluminizing way. The specific implementation process is as follows: plating a layer of Pt on the super alloy base, then heating and diffusing the super alloy base, and finally conducting powder embedding and aluminizing on the Pt-plated base diffused uniformly, thus obtaining the coating with the structure and the phase by aluminizing control process.
Owner:SHANGHAI UNIV

Near field communication method and device based on multiple protocols

The invention provides a near field communication method and a near field communication device based on multiple protocols. The near field communication method comprises the steps of receiving information by a first node, wherein the first node supports multiple protocols and has a function of mutual switching among the multiple protocols, and the information comes from a second node or a controller and carries the address of a target device of the information; converting the information into one protocol supported by the target device; transmitting the information converted into the protocol to the target device; furthermore, determining the first node according to the neighbor node list of the second node; and transmitting the information to the first node; or receiving the information which is converted into the protocol supported by the second node via the first node. By using the near field communication method and device based on multiple protocols, the problem that an existing multi-protocol gateway and a terminal have a failure in communication or fail to communicate as being beyond communication distance can be overcome, information transmission between the node and the controller thereof is performed through effectively using the node which supports multiple protocols and has a multi-protocol conversion function, and the near field communication efficiency is improved.
Owner:中国通信建设集团设计院有限公司 +1

Chip pin missing detection method based on semi-supervised deep learning

ActiveCN110930390AOvercome the problem of overpowering special typeReduce difficulty of useImage enhancementImage analysisThresholdingImage pair
The invention discloses a chip pin missing detection method based on semi-supervised deep learning. The method comprises the following steps: preprocessing a chip image to obtain an enhanced chip grayscale image; carrying out edge detection, thresholding and morphological filtering processing on the enhanced chip grayscale image to obtain a chip contour image and a chip packaging image; carrying out connected domain detection on the chip contour image and the chip packaging image, and obtaining the side face, with the pins, of the chip through judgment; generating a packaging mask image according to the judgment result of the side surface, with the pins, of the chip, and multiplying the packaging mask image by the chip contour image in a point-to-point manner to obtain a chip pin image; carrying out pin missing judgment and marking on the chip pin image; training a semantic segmentation deep convolutional neural network according to the marking result; and utilizing the trained semantic segmentation deep convolutional neural network to carry out pin missing detection on the to-be-detected chip image. According to the invention, chip pin missing detection can be realized in a chip quality detection scene, and the detection efficiency and precision are improved.
Owner:深圳市海芯微迅半导体有限公司

Floating type two-dimensional double-piston pump

The invention discloses a floating type two-dimensional double-piston pump which comprises a pump. An oil suction opening and an oil drain opening are formed in the pump, a pump unit is arranged in the pump and comprises two cylinders, the two cylinders are fixed into the pump and are arranged in the left-right directions, and two pistons are arranged in the two cylinders and are in linkage with each other; the central axes of the cylinders coincide with the central axes of the pistons, movement components are arranged at two ends of each piston and are used for driving the piston to axially move to change the volume of a working chamber, and piston movement driving directions of the corresponding movement components at the two ends of each piston are opposite to each other; each cylinder,the corresponding piston and the corresponding movement components on two sides of the piston form a portion of the floating type two-dimensional double-piston pump, an upper portion of the floatingtype two-dimensional double-piston pump is close to a front end cover, and a lower portion of the floating type two-dimensional double-piston pump is close to a rear end cover. The floating type two-dimensional double-piston pump has the advantages that oil distribution disc structures of the traditional peripheral plunger pumps are replaced with rotary and slide double-degree-of-freedom structures of the pistons, and accordingly the floating type two-dimensional double-piston pump has continuous oil suction and drain functions; the floating type two-dimensional double-piston pump is in doublemodes, reciprocating movement is carried out by 4 times whenever each piston rotates by a circle, and oil can be sucked and drained by 16 times and are increased by 4 times as compared with single-piston pumps.
Owner:ZHEJIANG UNIV OF TECH

Cold-hot impact three-stage coal breaking device and implementing method

The invention relates to a cold-hot impact three-stage coal breaking device which comprises a bearing pedestal, a walking mechanism, a liquid nitrogen storage steel bottle, an air vortex tube, a water storage tank, a heat exchanger, an air heater, a jet pump, a jet fan, a liquid nitrogen boosting pump, an air heating pipe, a water cooling pipe, a liquid nitrogen cooling pipe and a jet bit, wherein the lower surface of the bearing pedestal is connected with the walking mechanism; the liquid nitrogen storage steel bottle, the air vortex tube, the water storage tank, the heat exchanger, the air heater, the jet pump, the jet fan and the liquid nitrogen boosting pump are all mounted on the upper surface of the bearing pedestal through a sliding rail and are connected with the upper surfaces of the bearing pedestal in a sliding manner. The implementing method comprises four steps of prefabricated hole drilling, prefabrication of a coal breaking group, impact coal breaking operation and drilled hole sealing. According to the cold-hot impact three-stage coal breaking device, on one hand, the working efficiency of drilling operation and the drilling permeability-increasing quality are improved, and the gas extraction is reduced; on the other hand, the gas extraction operation safety and the reliability are improved.
Owner:HENAN POLYTECHNIC UNIV

Method for integrated preparing of foam metal phase change temperature control assembly

The invention provides a method for integrated preparing of a foam metal phase change temperature control assembly and aims at providing a technology method for solving the problem that in a phase change temperature control assembly, a gap exists between foam metal and a base body material, and the heat response rate is influenced. The method is achieved through the following technical scheme that according to the boundary dimension of a packaging container, a packaging container clamp is prepared; a cavity used for welding the foam metal is machined in the packaging container in advance, a layer of welding piece is laid on the inner side welding face of the cavity of the packaging container, and the contact interface of the foam metal is subjected to tin lining; the foam metal is compressed to the cavity size; the packaging container, the foam metal and the clamp are assembled into a whole and heated, and after cooling, a formed phase change temperature control assembly blank is taken out of the clamp of the packaging container; in the constant-temperature environment, a liquid phase change material is poured into the phase change temperature control assembly from a pouring port in the bottom of the packaging container; and finally, the pouring port is sealed, and machining of the appearance of the temperature control assembly is finished.
Owner:10TH RES INST OF CETC

Hydrogen-rich mask and preparation method thereof

The invention discloses a hydrogen-rich mask and a preparation method thereof. The hydrogen-rich mask is prepared from a component A, a component B and a component C, wherein the component A is prepared from the following raw materials in parts by weight: 75 to 97 parts of purified water, 0.5 to 5.0 parts of mannan, 1 to 5 parts of glycerin and 0.05 to 1.00 part of jojoba esters; the component B is prepared from the following raw materials in parts by weight: 0.05 to 0.20 part of bio-saccharide gum, 0.05 to 0.15 part of polyglutamic acid and 0.05 to 0.15 part of hyaluronic acid; the componentC is a ceramic material or coral calcium hydride; each part of finished product needs 0.1 to 5.0 g of the ceramic material or coral calcium hydride. By adopting the ceramic material or coral calcium hydride capable of generating hydrogen as a production raw material, the oxidation resistance of the mask is improved, and the skin care effect of retarding skin aging is achieved. Meanwhile, a separate packaging preparation process is adopted, and the ceramic material or coral calcium hydride is placed into essence before use to generate hydrogen instantly, so that the problem that hydrogen is liable to leak or fail in the conventional hydrogen-rich skin care product is solved, and high security is achieved.
Owner:GUANGZHOU ADDITIVE FREE COSMETIC CO LTD

Intelligent circuit breaker combined device

The invention provides an intelligent circuit breaker combined device. A current detecting piece is arranged in a circuit breaker. The current value of a circuit in the circuit breaker is obtained through the current detecting piece and then sent into a controller of an intelligent control device on one side of the circuit breaker, and the controller makes a judgment according to the received current value, and controls and starts an action mechanism to drive the circuit breaker to be released when the current value is in an overload state for a period of time. Because the current value of the circuit in the circuit breaker is directly tested and the controller is used for intelligent control, the problem that a thermal releaser is prone to fails caused by the external environment air temperature influences is solved. Meanwhile, due to the fact that the thermal releaser is omitted, the internal resistance of the circuit breaker is greatly reduced, and the power consumption and the heating amount of the circuit breaker are reduced. In addition, the controller is independently arranged in the intelligent control device outside the circuit breaker, the problem that a controller can not be put in a narrow space of a circuit breaker is solved, and meanwhile it can be avoided that the work of a controller is influenced by strong current.
Owner:JAECELE ELECTRIC
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