44results about How to "Reduce fault detection time" patented technology

The invention discloses a pitch fault detection system and a method and relates to a pitch fault detection system. The system comprises at least one blade, a pitch instruction generator, a blade pitch system, a model storage unit and a monitoring unit. The pitch instruction generator is used for generating at least one pitch instruction. The blade pitch system is used for regulating the pitch angle of the blade according to the pitch instruction and outputting an actual response that represents the actual pitch state of the blade. The model storage unit is used for receiving the pitch instruction and outputting an expected response that represents the expected pitch state of the blade based on a nonlinear model of the blade. The monitoring unit is used for comparing the deviation between the actual response and the expected response with a preset threshold value and judging the operation state of the blade based on the comparison result. The invention also discloses a wind turbine and a method for monitoring the blade operation state of the wind turbine.

The communication device has a frame transfer unit that executes frame transfer via the first communication link and the second communication link, a link confirmation frame sending unit, and a return link confirmation frame monitoring unit. The link confirmation frame sending unit causes the frame transfer processing unit to send a link confirmation frame for use in confirming a normal link status via the first communication link from the communication device to the counterpart communication device. The return link confirmation frame monitoring unit performs fault detection of the first and second communication links by monitoring a return link confirmation frame which is to be returned from the counterpart communication device to the communication device via the second communication link when the counterpart communication device receives the link confirmation frame via the first communication link.

The invention discloses an AC contactor with fault display, which includes an AC contactor body, a controller, and an indicator light; the invention uses the controller to collect pulse signals generated when each contact is powered on and off, and the controller uses the pulse signal to Judging whether each contact is faulty, and according to the judgment result, control the indicator light to indicate whether each contact is faulty or not. The invention has a simple structure, and the staff can intuitively judge the faulty contacts, which greatly saves fault detection time and manpower and material resources.

The invention relates to a detection method for a cable grounding fault. A method for detecting a grounding fault of a bridge cable, which includes: connecting one end of the faulty cable to the output end of a DC stabilized power supply, and the other end to be short-circuited to any other intact phase cable; connecting the output end of the DC stabilized power supply to the other At the other end of any one-phase cable; turn on the DC stabilized power supply to keep the output current stable at 5-10A; use a DC voltmeter to measure the values ​​V1 and V2 within the voltage range of the two ends of the faulty cable to the bridge frame; that is The rough location of the fault point of the cable can be calculated; then the DC stabilized power supply is released, and one end of the resistance gear of the multimeter is connected to one end of the faulty cable, and the other end is grounded; When the resistance value of the multimeter reaches the maximum value, that is, the position where the insulating rope moves is the fault point. The invention can be used for fast and accurate detection of the grounding fault point of the cable laying bridge.

A windshield impact deformation fault identification and detection method, storage medium and equipment belong to the technical field of image detection. In order to solve the problems of low detection accuracy and low detection efficiency in the existing manual image inspection method. The present invention utilizes the image input windshield hitting deformation fault recognition network to detect the fault of the image to be detected; the windshield hitting deformation fault recognition network adopts the combined network of Trident and residual network, and in each branch of the combined network, the last level of residual network the output of a l+1 , passed to the GAP layer and the FC layer, and then passed to the ReLU activation function, and then passed through a FC layer, passed to the activation function to obtain the threshold; the threshold and the output of the last level of residual network are soft-thresholded; at the same time, the activation The output result of the function is branched, and it is normalized through an FC layer and a Softmax activation layer, and then combined with a l+1 Multiply to get the branch detection result; add the detection results of the three branches to get the final output. Fault identification for windshield strike deformation.

A distribution protection collaborative architecture including a flexible interconnection device, a device, and a collaboration method. Under a frame of collaborative control, the rapid state sensing of a power electronic device of the alternating current (AC) and direct current (DC) flexible interconnection device and the AC side feeder protection control device are used to achieve rapid fault locating and fault removal, enabling rapid self-recovery of a region fault of a full AC and DC system. The present invention is proposed to achieve, by means of a GOOSE communication network based on region high-speed information interaction, global information high-speed communication of smart devices, including the flexible DC interconnection device, in the same AC and DC system, and automatically realize rapid fault locating and isolation of a protection device according to a pre-set condition. With respect to a protection configuration manner of a traditional power distribution system, the present invention has a higher fault handling speed and a better collaborative fault handling capability.

The invention provides a matrix switch relay failure detection device and detection method. By adding a circuit board, a resistor with the same resistance value is connected in series with each signal output channel of the matrix switch, and the resistance value of the parallel resistance is measured for multiple switch channels. According to The change of the measured value judges whether there is a fault in the switching relay. The present invention does not need to close and disconnect all matrix switch relays sequentially, and adopts the level-by-level average grouping method to measure the resistance value of multi-way switches with relay faults, and narrows the detection range step by step, which can greatly shorten the fault detection time and improve the detection efficiency , especially for large-scale matrix switches.

Embodiments of the present invention provide a method and device for detecting faults in an electricity consumption information collection system, which relate to the field of communication, can automatically detect faults in the power consumption information collection system, and improve the fault detection efficiency of the power consumption information collection system. The detection method is applied to a detection device for faults in the electricity consumption information collection system, and includes: the detection device obtains the reading result of the reading of the first electric meter by the concentrator in the electricity consumption information collection system, and the reading result is used to indicate whether the reading is successful ; If the reading result indicates that the reading fails, then the detection device detects the communication channel between the concentrator and the first ammeter, and obtains the detection result of the communication channel, and the detection result is used to indicate whether there is a fault in the communication channel; As a result, it is determined that there is a failure in the communication channel or that there is a failure in the first electric meter.

The invention discloses a clutch and separation device for a running-in rack of an engine. Two bilateral side supports (2) are fixed on a chassis (1), a cross beam is connected between the upper parts of the two bilateral side supports (2) and provided with a clutch pedal assembly (3) and an upper support (4), an oil storage tank (5) is supported on the upper support (4) and connected with a main pump oil port of the clutch pedal assembly (3) by a first oil pipe (6), and the main pump oil port of the clutch pedal assembly (3) is connected with a second oil pipe (7). Through the principle for simulating clutch separation of the whole car, the abnormal sound fault position of the engine can be accurately found by a running-in person, the fault detection time of the engine can be saved, and the detection efficiency can be effectively improved; and the clutch separation device is further helpful for gear shifting simulation in running-in test of the engine, leading the gear shifting operation to be easy and effort-saving, and eliminates the misjudgment drawbacks including clamping in gear shifting and incapability of gear shifting in the background art.