39 results about "Failure detector" patented technology

The invention discloses a mine fire intelligent monitoring and early warning auxiliary method and system, and the method comprises the following steps: S1, determining a monitoring point in a mine, arranging a sensor at a set position for detecting the condition of a mine region, and arranging a fault detector for carrying out the fault detection of the arranged sensor; according to the invention, a plurality of sensors are arranged to monitor the gas composition, concentration, hidden fire source, residual coal accumulation amount, wind speed and temperature change conditions in the oxidation zone, so that the factors of fire occurrence can be effectively and comprehensively analyzed in real time, the intelligent degree is improved, early warning and fire extinguishing treatment can be carried out in time when abnormity occurs, and the safety of the system is improved. The monitoring accuracy is improved, the potential safety hazard of a fire disaster is reduced, fault detection can be performed on the sensor in the monitoring process, and when a fault occurs, a person is reminded to handle the fault in time, so that the situation that the person having the fault of the sensor cannot know the influence on the monitoring accuracy in time can be effectively reduced.

The invention relates to an electronic circuit, an electronic system and a method. The electronic circuit includes a fault output node switchable between a fault state indicative of a fault operating state and a normal state indicative of a normal operating state, the electronic circuit further including a fault detector configured to place a number of fault event signals of a plurality of fault event signals in an active state, each of the plurality of fault event signals indicates a different fault event associated with the electronic circuit; a failure mode signal generator configured to generate a failure mode signal based on the plurality of failure event signals placed in the active state; and a fault output node control unit configured to receive the fault mode signal, and in response to receiving the fault mode signal: switch the fault output node to a fault state, and output the fault mode signal at the fault output node by switching the fault output node according to the fault mode signal.

The invention discloses a wind power detection device for new energy power generation and a use method thereof.The wind power detection device comprises a base, a rubber supporting column is fixedly connected to the center of the top of the base, a mounting box is fixedly connected to the top of the rubber supporting column, and an angle fine adjustment mechanism used for performing angle fine adjustment on a supporting seat is arranged at the position, located outside the rubber supporting column, of the top of the base; a mounting box is fixedly connected to the top of the supporting seat, a rotating mechanism is mounted at the top of the mounting box, a driving mechanism is arranged at the top of the rotating mechanism, lifting seats capable of being adjusted in a lifting mode are symmetrically arranged in the mounting box, and a fixing sleeve capable of being adjusted in a rotating mode is arranged between the two lifting seats. The wind power detection device has the beneficial effects that the angles of the supporting seat and the mounting box can be flexibly and finely adjusted, the detector is always in the optimal detection direction by adjusting the angle of the driving mechanism, the wind power detection accuracy is greatly improved, meanwhile, the fault detector is conveniently and quickly replaced, and detection interruption caused by the fault of a single detector is avoided.

A failure detection device according to one embodiment of the present invention includes a first resistive voltage divider circuit, a second resistive voltage divider circuit, a comparator, and a determination unit. The first resistive voltage division circuit is configured to be capable of dividing a high voltage applied to a first pixel control line among the plurality of pixel control lines. The second resistive voltage division circuit is configured to be capable of dividing a low voltage applied to the first pixel control line. The comparator is capable of comparing a reference voltage with a first voltage generated by the first resistive voltage division circuit or a second voltage generated by the second resistive voltage division circuit. The determination section is capable of performing failure determination of the drive circuit and each of the pixel control lines based on a result of the comparator.

The application relates to the technical field of unmanned aerial vehicle fault detection, and discloses an unmanned aerial vehicle real-time fault detection method based on a deep domain adaptive BiLSTM, which comprises the following steps: a feature extractor and a fault detector are pre-trained in a source domain, then past and future features are extracted from the flight data of the unmanned aerial vehicle time sequence under one working condition by using the feature extractor, and a feature set of the source domain and the target domain is obtained; the feature set is sent to a domain adapter for processing, the source domain and the target domain are classified by using the domain adapter, and the maximum difference between the source domain and the target domain is measured; the fault detector is optimized and trained in a minimum health state classification error mode, then the flight data of the unmanned aerial vehicle under any working condition is acquired, the fault detector is used for real-time fault detection of the unmanned aerial vehicle, and a health state report of the unmanned aerial vehicle is obtained. The application has the beneficial effects of reducing the difference between different working condition data and improving the accuracy of the unmanned aerial vehicle fault detection result.

1. Name of the product in this design: Four-channel DC arc fault detector. 2. Purpose of this design: For arc fault detection at the high-voltage DC end of a photovoltaic inverter. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

A fault detection system and method for detecting a fault condition in a direct current (DC) system. A power transmitter energizes a cable with electrical power. A power receiver connected to the cable provides the electrical power to a load. At the power receiver, a signal generator coupled to the cable generates and propagates a deterministic signal on the cable. At the power transmitter, a fault detector is coupled to the cable to receive the deterministic signal and noise after propagation through the cable. The fault detector has a plurality of filter branches with each of the filter branches having an associated bandwidth. Adjusting a gain of one or more of the filter branches in response to a signal-to-noise ratio of the cable. The cable is deenergized when a fault is detected on at least one of the filter branches.

An apparatus for detecting fault conditions in a power system is described. The apparatus may include one or more powered lines configured to output electricity to an electrical distribution system, a neutral line, an interrupter, and a controller. The controller may be configured for detecting when a fault condition is present in the power system. In response to detecting that the fault condition is present, the controller may cause the interrupter to interrupt the power supplied by the one or more powered lines. In response to detecting that the fault condition is no longer present, the controller may determine a power restoration delay time and cause the one or more powered lines to supply power to the electrical distribution system when the power restoration delay time has been elapsed.

The invention relates to the technical field of power distribution networks, and provides a grounding fault diagnosis device for a power distribution network, which comprises a square block, a hollow rod is movably embedded in the square block, a slender rod is fixedly mounted on one side of the square block, and a sliding block movably sleeves the outer surface of the slender rod. One side of the sliding block is rotationally connected with a plurality of upper semicircular blocks through rotating rods, and one sides of the upper semicircular blocks are rotationally connected with hollow blocks through rotating rods. In the embodiment of the invention, an electric push rod is started through an external power supply, the electric push rod drives a movable plate to move downwards, and a motor drives the rotating rods to rotate; the rotating rod drives the ground drilling rod to rotate, at the moment, the ground drilling rod rotates while moving downwards and can drill into the ground and make contact with a grounded wire, at the moment, fault detection is conducted on the grounded wire through the fault detector, and data are transmitted to the interior of the fault detector through the data line. It needs to be explained that the length of the telescopic rod can be determined according to actual conditions.

An electronic circuit comprises a fault output node that is switchable between a fault state, indicating a fault operating state, and a normal state, indicating a normal operating state, wherein the electronic circuit further comprises: a fault detector configured to detect a number of fault event signals from a plurality of fault event signals, each of the plurality of fault event signals indicating a different fault event associated with the electronic circuit; a fault mode signal generator configured to generate a fault mode signal based on the detected number of fault event signals; and a fault output node control unit configured toto receive the error mode signal and, in response to receiving the error mode signal: to switch the error output node to the error state and to output the error mode signal at the error output node by switching the error output node according to the error mode signal.

Reduce the number of ground fault detectors or circuits. [Solution] A ground fault detector 50 for power equipment includes a resistance grounding circuit 51 that grounds the P-phase power line 60P and N-phase power line 60N connecting a DC power supply 20 and a power converter 30 to the neutral point via a resistor, and a detection unit 53 that detects a ground fault based on at least one of the P-phase voltage and N-phase voltages V1 and V2 of the DC power supply 20. The detection unit 53 determines that there is an abnormality or an AC ground fault if periodically fluctuating voltage components S1 and S2 are superimposed on at least one of the P-phase voltage or N-phase voltages V1 and V2 of the DC power supply 20.

According to an embodiment, a control device includes a controller and a fault detector. The controller controls an electric motor. The fault detector detects a fault of the electric motor. The fault detector performs a frequency analysis of a voltage signal and a current signal that drive the electric motor. The fault detector determines, based on a result of the frequency analysis, whether or not the current signal includes an odd-order harmonic having a frequency that is odd multiples of a fundamental wave of the voltage signal. The fault detector determines, based on the result of the frequency analysis, whether or not the odd-order harmonic has a first phase angle that is a phase angle of an opposite phase with respect to a phase angle of the fundamental wave.

Systems, devices, methods, and computer-readable media for improved hyperspectral images are provided. A method includes determining first pixel data of a first frequency band of frequency bands of a pixel of a hyperspectral image corresponds to a failed detector, determining a neighboring pixel of neighboring pixels of the pixel that has a corresponding first spectral profile (i) most similar to a second spectral profile of the pixel and (ii) corresponds to a non-failed detector, determining second pixel data from the first spectral profile, and replacing the first pixel data with second pixel data in the second spectral profile.

An apparatus includes an input signal generator that provides a digital input signal to a first translator. The first translator corresponds to one of a supply translator or a drain translator. The supply translator controls actuation of a supply relay to deliver pressurized fluid to an actuator that is operably coupled to a valve in a process control system. The drain translator controls actuation of a drain relay to drain pressurized fluid from the actuator. The digital input signal triggers application of a current to the first translator to open the first translator. The apparatus also includes a fault detector to: determine a difference in at least one of a pressure in the actuator or a position of a flow control member in the valve; and detect a fault when the difference satisfies a fault threshold.

The application belongs to the technical field of fault detection and analysis in control system, and discloses a kind of hot reactor fault detection method based on polytope. Through the discretization analysis of the nonlinear model of hot reactor, the system dynamics under the condition of hot reactor failure is described by T-S fuzzy 2-D model. To solve the problem of unknown antecedent variables, a T-S fuzzy state observer is designed to calculate the estimated value of the antecedent variables using state estimation. On this basis, a T-S fuzzy fault detector is designed to generate a residual signal. Using the estimated-based method, a fault detection mechanism based on polytope is established to determine whether a fault has occurred according to the residual signal. Finally, the feasibility and effectiveness of the application are verified through simulation. The application first designs a T-S fuzzy 2-D model fault detector for hot reactor, and conducts fault detection based on polytope under the condition of unknown antecedent variables.

The present invention provides a glitch detector including a first inverter, second inverter, a charge sharing component and a warning flag generator. The first inverter is configured to receive a first signal at a first node to generate a second signal to a second node. The second inverter is configured to receive the second signal at the second node to generate the first signal to the first node. The charge sharing component is configured to selectively connect the first node to the second node. The warning flag generator is coupled to the first node or the second node, and configured to determine whether a supply voltage of the glitch detector suffers an under voltage glitch according to a voltage level of the first signal or a voltage level of the second signal, to determine whether to output a warning flag.

The disclosure relates to an electronic circuit, an electronic system, and a method. The electronic circuit includes a fault output node switchable between a fault state indicating a fault operating state and a normal state indicating a normal operating state, the electronic circuit further including: a fault detector configured to assert a number of fault event signals of a plurality of fault event signals, wherein each of the plurality of fault event signals indicates a different fault event associated with the electronic circuit, a fault mode signal generator configured to generate a fault mode signal based on the asserted number of fault event signals, and a fault output node control unit configured to receive the fault mode signal and, in response to receiving the fault mode signal, switch the fault output node to the fault state.

1. The name of the design product: portable acoustic emission mechanical seal failure detector shell (ESL). 2. The use of the design product: used for loading and protecting the acquisition board card, operation board card composition, wireless WiFi module (detachable) and hard disk storage module. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The application belongs to the technical field of aircraft component and assembly design and manufacturing, and discloses an aircraft cabin door control system, which comprises a microprocessor module, an interface circuit module, a driving module, a cabin door signal logic control module and a self-detection module, the microprocessor unit comprises an A / D conversion module and a data processing and logic judgment unit, the interface circuit module comprises a plurality of aircraft cabin door position sensors and a slide pre-position inductance sensor signal, the driving module comprises a door driving, a slide driving and a fire alarm driving, and the self-detection module comprises a fault detector. The application provides the collection, transmission, processing, position state indication and cabin door abnormal alarm of the aircraft cabin door position sensor signal by designing the aircraft cabin door signal control system and control assembly, simultaneously provides the BITE self-detection function of the aircraft cabin door control system, reduces the operation failure probability of the crew, and improves the safety during flight.

Power-glitch detection and power-glitch self-testing within a chip is shown. In a chip, a processor has a power terminal, a glitch detector, and a self-testing circuit. The power terminal is configured to receive power. The glitch detector is coupled to the power terminal of the processor for power-glitch detection. The self-testing circuit has a glitch generator and a glitch controller. The glitch controller controls the glitch generator to generate a self-testing glitch signal within the chip to test the glitch detector.

A device for preventing electric shock and fire according to the present invention includes one or more fault detectors having one end electrically connected to at least one of two or more earth-isolated power lines with a resistance value greater than or equal to a predetermined earth resistance value and a first neutral point having a potential between the voltages of the two or more power lines, and the other end electrically connected to earth, wherein the fault detector detects a leakage current by forming a current path for the leakage current flowing from the two or more power lines or the first neutral point to earth.Therefore, according to the present invention, by detecting a leakage current between a power line, which is insulated from the earth and supplies power, and the earth, limiting the detected leakage current, which is a dangerous or lesser current, or cutting off the flow of leakage current in a human body or peripheral installations, it is possible to prevent electric shock and the occurrence of fire during the leakage current.

The training or optimization of a failure detector for detecting a presence or immanence of a failure or a degradation of a motorized system which comprises one or more closed-loop controlled electro motors may be achieved more efficiently by a more efficient generation of the dataset underlying this training, in that the more efficient generation of this dataset is achievable by providing a set of control parameters of a controller component arranged in one or more control loops of the one or more closed-loop controlled electro motors, with the settings representing different deviations from an in-use setting of the control parameters, and / or providing a set of set point signals of the one or more control loops of the one or more closed-loop controlled electro motors, the set of set point signals representing different variations of a base set point signal.

An electronic device is presented. The electronic device comprises a non-volatile memory configured for storing information independent of power supply. The electronic device further comprises a plurality of writeback registers configured for storing information parallel to operation of the electronic device. The electronic device further comprises a fault condition detector configured for detecting a fault condition of a primary power supply, activating a substitute power supply path to a substitute power supply in case of the fault condition, and initiating an information transfer from the writeback registers to the non-volatile memory in case of the fault condition. Further, a system comprising the electronic device and a method for operating the electronic device are presented.

To discriminate between failure of a current sensor and failure of a motor.SOLUTION: A failure detection method using a failure detector, the method comprising: calculating divided data by dividing one of a second harmonic amplitude of a fundamental wave frequency of a phase current detected by a current sensor that detects the phase current flowing between an inverter circuit and a motor and a fundamental wave amplitude of the phase current detected by the current sensor by the other; and determining a failure of the current sensor and a failure of the motor based on a change in the divided data due to a difference in the fundamental wave frequency.SELECTED DRAWING: Figure 10

Sensor device (10) comprising the following: at least one first sensor element (13) with a first detection direction configured to generate at least one first sensor signal (Sx, Sx1) based on the detection of a first magnetic field component of a varying magnetic field oriented in the first detection direction; at least one second sensor element (14) with a second detection direction, configured to generate at least one second sensor signal (Sy, Sx2) based on the detection of a second magnetic field component of the varying magnetic field, which is oriented in the second detection direction; a signal processing circuit (15, 16) configured to generate a first pulse signal (S1) based on the at least one first sensor signal (Sx, Sx1) and to generate a second pulse signal (S2) based on the at least one second sensor signal (Sy, Sx2); a fault detector (18) configured to detect at least one fault and to generate a fault signal indicating the at least one fault in response to the detection of the at least one fault; and an output generator (17) configured to receive the first pulse signal (S1) and the second pulse signal (S2), the error signal based on a first condition that the error detector (18) detects the at least one error, and simultaneously output a first output signal (OUT1) and a second output signal (OUT2), wherein, based on a second condition that the fault detector (18) does not detect the at least one fault, the output generator is configured to output the first pulse signal (S1) as the first output signal (OUT1) and to output the second pulse signal (S2) as the second output signal (OUT2), and wherein, in response to the first condition being satisfied, the output generator (18) is configured to keep the first output signal (OUT1) in a steady state and to output the second pulse signal (S2) as the second output signal (OUT2), wherein: the first pulse signal (S1) comprises several transition edges that define several first pulses, the second pulse signal (S2) comprises several transition edges that define multiple second pulses, and the first several transition flanks are synchronized with the second several transition flanks.

A kind of industrial robot joint fault detection method and system, the method comprises: the modeling and simulation of industrial robot are carried out;Set its joint fault mode, carry out fault simulation and construct fault mode dataset;Joint fault detection is carried out by fault detection network;Fault detection network includes the fault detector established for each joint, and the fault detector includes feature extractor and anomaly detector;Feature extractor includes the multilayer perception based on fully connected layer, using multidimensional scale scaling loss function, the original data corresponding to joint state is reduced dimension, and deep feature is extracted;Anomaly detector uses auto-encoder to carry out feature data reconstruction to the feature of original data after dimension reduction, and whether the error between the feature extracted by feature extractor and reconstructed feature data is used to judge joint state data normal or not.The present application can effectively reduce the noise interference in signal, improve fault detection precision, and guarantee the generalization of robot fault detection.

The invention discloses a multi-channel conductive slip ring transient interruption high-precision detector based on adjustable threshold comparison, which mainly relates to the technical field of conductive slip ring detection, and comprises a power supply unit, an adjustable reference resistor unit, a multi-path high-slew-rate constant-current excitation source, a data acquisition and processing unit taking an FPGA as a core, and a man-machine interaction unit, a continuously adjustable reference voltage is generated through a path of constant current excitation and a knob type precise adjustable resistor and is used as a transient-break resistance threshold reference; the other multi-path constant current excitation synchronously acts on each channel of the tested slip ring; the FPGA utilizes a high-frequency clock generated by a phase-locked loop to carry out real-time comparison and nanosecond precision timing on response voltage and reference voltage of each channel in parallel; according to the invention, continuous adjustment and visualization of the transient-current resistance threshold can be realized, and the detection precision is greatly improved.

The present embodiment relates to a memory failure analysis method that is performed by a memory test apparatus. The memory failure analysis method includes setting a test area of a memory under test (MUT), inputting a test pattern to the set test area, receiving a test result from the MUT, and an updating operation including operation (a) of storing failure information extracted from the test result and operation (b) of compressing, updating, and storing failure information, which is stored in a failure accumulator, using the stored failure information, wherein a first failure detector and a second failure detector alternately perform operation (a) and operation (b), and the test area is a non-linear area.

The present application relates to the field of gas pipeline leakage fault detection, and more particularly to a gas pipeline leakage fault detection method, which comprises: establishing a thermodynamic model of the gas pipeline; establishing a state space equation based on the thermodynamic model of the gas pipeline; establishing a robust fault detector based on the state space equation; collecting measurement data of the gas pipeline as actual measurement values to be detected; generating input conditions of the thermodynamic model of the gas pipeline based on environmental conditions and operating conditions in the measurement data, and calculating model prediction values output by the thermodynamic model of the gas pipeline; the robust fault detector calculates a residual error according to the actual measurement values to be detected and the model prediction values, and determines whether the gas pipeline has a leakage according to the residual error; and the leakage distribution of the gas pipeline is generated by comprehensively detecting the leakage of the gas pipeline at multiple places. The gas pipeline leakage detection method can obtain the leakage of the gas pipeline.