43results about How to "Facilitate fault diagnosis" patented technology

The invention relates to a method for detecting complete blockage of an air conditioning system. The method includes a, enabling an MCU (microprogrammed control unit) to judge whether an air conditioner is in a refrigerating mode or a heating mode; b, judging whether the air conditioning system is completely blocked or not according to the difference between the temperature of an indoor environment and the temperature of a coil of an indoor heat exchanger, the difference between the temperature of a coil of an outdoor heat exchanger and the temperature of an outdoor environment and a relation between the magnitude of real-time current and the magnitude of rated current corresponding to real-time frequency when the air conditioner is in the refrigerating mode and the operating time is longer than or equal to set time; and c, judging whether the air conditioning system is completely blocked or not according to the difference between the temperature of the coil of the indoor heat exchanger and the temperature of the indoor environment, the difference between the temperature of the outdoor environment and the temperature of the coil of the outdoor heat exchanger and a relation between the magnitude of real-time current and the magnitude of rated current corresponding to real-time frequency when the air conditioner is in the heating mode and the operating time is longer than or equal to set time. The method has the advantages that the problem of complete blockage of the air conditioning system can be timely and accurately judged, the intelligent degree of the air conditioner is effectively improved, and the problem of poor reliability caused when an existing air conditioner works in a faulty mode is prevented.

The invention provides a system and method for monitoring environmental parameters of a wireless communication electric power transmission line, and belongs to the field of network communication and electrical technologies. The system comprises a management terminal master station, an electric power line detection device and a wireless communication device. The electric power line detection device comprises a solar power supply unit, a sensor unit and a central processing unit. The sensor unit comprises a temperature and humidity sensor, a barometric pressure sensor, a wind velocity sensor, a tension sensor and a voltage sensor. The electric power line detection device is in wireless communication with the management terminal master station through the wireless communication device. The system has the advantages that temperature, humidity, wind velocity, barometric pressure and other meteorological factors and the tension of the line are monitored in real time, various collected climate parameters and the change state of the climate parameters are transmitted to an information center in real time, the micro-meteorological environment of a specific transmission line corridor is accurately reflected, manual inspection intensity is reduced, equipment operation real-time information efficiency is improved, and the system brings convenience to fault judgment, prevention and study of the transmission line.

The invention relates to a transmitter fault diagnosis circuit and a method thereof. The fault diagnosis circuit comprises a sensor, a signal processing module, a standard signal input module, and a change over switch. The change over switch connects with the sensor and the signal processing module, and connects with the standard signal input module and the signal processing module simultaneously. According to the invention, a standard signal is inputted to the signal processing module through the standard signal input module, and connection between the sensor and the signal processing module or connection between the standard signal input unit and the signal processing module is switched through the change over switch. When a fault appears, the change over switch disconnects the connection between the sensor and the signal processing module, and connects the standard signal input module with the signal processing module, the standard signal is inputted to the signal processing module through the standard signal input module, according to the standard signal, the signal processing module carries out processing, followed by outputting, if an output result is normal, the sensor has a fault. Conversely, the signal processing module has a fault. The transmitter fault diagnosis circuit has the characteristics of simple structure, low cost and convenient maintenance.

The invention provides a substation distribution room full-view inspection-tour monitoring system and a management method of the substation distribution room full-view inspection-tour monitoring system, and belongs to the field of substation distribution room full-view inspection-tour monitoring systems. The substation distribution room full-view inspection-tour monitoring system comprises a terminal control system, a branch-shaped looped-network optical-fiber communication system and a dispatching monitoring center. According to the substation distribution room full-view inspection-tour monitoring system, dispatching personnel in front of a dispatching computer can remotely see voltage values, current values, power values, phase-angle values and power factor values of power supply circuits, the input and exit situation of the protection function and a protection constant value of a switch, the working state of the switch and the on-site video of electricity transformation and distribution switching stations, and send a remote-control instruction to a high-voltage switch, and the five-remote-control function which integrates telecommands, telemetering, remote control, remote regulation and remote vision is achieved.

The invention discloses a high-temperature alarm method for a refrigerator. The high-temperature alarm method for the refrigerator comprises the steps that the temperature inside a refrigerator body of the refrigerator is detected, and the electrification time of the refrigerator is recorded; if the temperature in the refrigerator body is greater than a preset temperature threshold value, the abnormal high-temperature type is determined according to the electrification time; an alarm mode is determined according to the abnormal high-temperature type; and an high-temperature alarm is given according to the determined alarm mode. According to the high-temperature alarm method for the refrigerator, a high-temperature alarm can be given, the cause of the high-temperature alarm can be prompted, a user can conveniently take the next measures, and fault analysis and maintenance can be facilitated. The invention further discloses a high-temperature alarm device for the refrigerator and the refrigerator with the high-temperature alarm device for the refrigerator.

The invention discloses an LED indicator light system for a train. The LED indicator light system comprises a control unit, a detecting unit, a displaying unit, an indicating unit, a gas exchanging unit and an alarm unit. The detecting unit comprises an infrared sensor and a gas sensor, the infrared sensor and the gas sensor are arranged inside a train restroom, the alarm unit comprises a sound alarm, the displaying unit comprises a first display screen and a second display screen, the first display screen is arranged on the top of the end, close to the restroom, in a carriage, the second display screen is arranged on the outer portion of a restroom door, and the first display screen and the second display screen synchronously display the using situations inside the restroom. The gas sensor is used for detecting the concentration of the gas inside the restroom, the control unit controls work of the gas exchanging unit according to the gas concentration, and odor in the restroom is exhausted. The alarm unit is arranged in a train monitoring room and sends alarm information. The system effectively solves the problem that an indication system of the train restroom is incomplete.

The invention discloses a real-time monitoring device and method for power transmission line phase-to-phase spacer waving tension. The system comprises a data collection front unit, a phase-to-phase spacer device, a communication converting unit and an industrial personal computer; the data collection front unit comprises a first tension sensor, a second tension sensor and a control module, the first tension sensor is connected with a phase-to-phase spacer of the power transmission line phase A-phase B, the second tension sensor is connected with a phase-to-phase spacer of the power transmission line phase B-phase C, the control module is connected with the first tension sensor and the second tension sensor separately, and signals are sent to the communication converting unit in a wireless communication mode; the communication converting unit transmits the received data to the industrial control computer. The stress phenomenon of the phase-to-phase spacers is obtained in time, electric workers can conveniently improve the design and layout of the phase-to-phase spacers according to the phase-to-phase spacer waving stress phenomenon, the reliability and effectiveness are improved, and finally the phase-to-phase spacer anti-waving effect is improved.

The invention discloses a bidirectional remote control system and a method for mining. The system comprises a remote control transmitter for mining and a bidirectional receiver for mining; The remote control transmitter for mining comprises a first core processor, a first power supply, an input unit, a first display unit, a first radio communication circuit and a first data recording circuit; the bidirectional receiver for mining comprises a second core processor, a second power supply, a second radio communication circuit, a second data recording circuit, a CAN interface circuit, an isolation circuit and a CAN external interface circuit; the second core processor is connected to the second power supply, the radio communication circuit, the second data recording circuit and the CAN interface circuit. According to the bidirectional remote control system and the method for mining of the invention, personnel operating the machinery for mining can realize remote control on the machinery to be controlled with a distance from the machinery. During the operation, changes of parameters of state of three concerned controlled machineries can be observed to ensure safe working of high gas mine.

The invention discloses a radio excitation system, a detection method and an electric vehicle, and relates to the technical field of electronic power. The input end of a first power conversion circuit of the system is connected with a power supply, and the output end is connected with a stator winding of an electro-magnetic motor; the input end of a second power conversion circuit is connected with the power supply and the output end of the second power conversion circuit is connected with a primary side of an excitation transformer; the excitation transformer transmits energy required by an excitation winding of the electro-magnetic motor from the stator to the rotor. A first controller controls the first power conversion circuit to inject current excitation to a stator winding so that the current can be generated on the excitation winding. A detection circuit obtains a response signal of the primary side of the excitation transformer and sends a response signal to a second controller; the second controller controls the second power conversion circuit to inject pulse current excitation to the primary side of the excitation transformer and determines the electrical parameters of the excitation transformer by using the response signal when the secondary side of the excitation transformer is short-circuited and open-circuited by the current generated on the excitation winding. The system can be used for detecting the electrical parameters of the radio excitation system.

The invention belongs to a distributed Raman optical fiber sensing system, and discloses an intelligent power grid-oriented distributed optical fiber Raman sensing system and detection method considering long sensing distance and high spatial resolution. The system comprises a pulse laser, a wavelength division multiplexer, a sensing optical fiber, a first photoelectric detector, a second photoelectric detector and a data acquisition system, pulse laser output by the pulse laser passes through the wavelength division multiplexer and then enters the sensing optical fiber, Stokes light and anti-Stokes light reflected in the sensor pass through the wavelength division multiplexer, are detected by the first photoelectric detector and the second photoelectric detector and then are sent to the data acquisition system, one part of the sensing optical fiber is arranged in the thermostatic bath, the other part of the sensing optical fiber is arranged in the second photoelectric detector, and the thermostatic bath is used for carrying out thermostatic control on the sensing optical fiber in the thermostatic bath; and the data acquisition system is used for performing data acquisition and demodulation to obtain distributed temperature field information along the sensing optical fiber. The method improves the resolution and measurement precision of the system, and can be applied to the field of intelligent power grid detection.

The invention discloses a mining remote bilateral control system. The mining remote bilateral control system comprises a mining remote bilateral control system transmitter and a mining remote bilateral control system receiver. The mining remote bilateral control system transmitter comprises a battery pack, various keys, an LED liquid crystal display circuit, a core processor, a wireless circuit, a data recording circuit, a shell and a conversion power source. The mining remote bilateral control system receiver comprises a second core processor, a second wireless circuit, an isolation circuit, a second data circuit and an explosion-proof cavity. The mining remote bilateral control system is applicable to underground mining machines, mining machine operators can operate the controlled machines remotely while keeping a certain distance away from the controlled machines and can see change conditions of state parameters of the three sets of concerned controlled machines in real time in operation, thus, safety operation in high gas mines is guaranteed, and the operation and the real-time state parameters of the controlled machines are wirelessly transmitted back and displayed.

The invention discloses a communication system on-site maintenance multifunctional instrument. The communication system on-site maintenance multifunctional instrument comprises a single-chip microcomputer system, a plurality of detection modules controlled by the single-chip microcomputer system, and an input and output module connected with the single-chip microcomputer system. According to the invention, the functions of a plurality of kinds of instruments required by communication system on-site maintenance are integrated, a plurality of test means are integrated, effective fault judgment is provided for fiber cat online detection, the communication system on-site maintenance multifunctional instrument can be applied to a plurality of kinds of occasions, and the one-machine multi-purpose function is realized.

The invention discloses a heating loop fault judging method. A heating loop is provided with a circulating pump, and the method is characterized in that the heating loop is provided with a differential pressure device at the water outlet end of the circulating pump, the differential pressure device is provided with a water inlet port, a water outlet port and a tapered section located in the middle, the caliber of the tapered section is gradually reduced from the water inlet port to the water outlet port, a pressure sensor is arranged on the differential pressure device, the signal output end of the pressure sensor is connected with a controller, and the controller determines a fault according to the differential pressure value. The differential pressure device is used for judging the flowcondition of the heating water path, whether the heating circulation pump is normally operated or not can be known, whether air in the waterway is too large or not can be judged, or whether the waterpath is blocked or not can be judged, and great convenience is brought to subsequent fault judgment and maintenance.

The invention relates to the field of air conditioners, and discloses a method for detecting blockage of an air conditioning system, so that blockage detection of the air conditioning system does notdepend on the temperature of an evaporator or condenser coil. The method comprises the following steps of collecting and storing the environment temperature of the outer side of an outdoor unit, the opening degree of an electronic expansion valve, the frequency of a compressor and the temperature of a compressor winding in real time, and meanwhile, calculating a change rate deltaT1 of the environment temperature of the outer side of the outdoor unit within n seconds, a change rate deltaV of the opening degree of the electronic expansion valve within n seconds, a change rate deltaF of the frequency of the compressor within n seconds and a change rate deltaT2 of the temperature of the compressor winding within n seconds; and when deltaT1 is smaller than a first temperature change rate threshold Th1, deltaV is equal to 0 and deltaF is equal to 0, comparing the relation between deltaT2 and the second temperature change rate threshold Th2, and judging whether the air conditioning system isblocked or not according to a comparison result. The method is suitable for detecting the blockage of the air conditioner.

The invention discloses an integrated cooker fault diagnosis system. The integrated cooker fault diagnosis system comprises an integrated cooker power panel installed in an integrated cooker cabinet body; a power input interface of the integrated cooker power panel is electrically connected with a positive pole N and a negative pole L of an external power source, and power output pins of the integrated cooker power panel are electrically connected with an electrode of a fan R6; power output pins of the integrated cooker power panel are electrically connected with pins of a temperature sensor T1 and pins of a temperature sensor T2; power output pins of the integrated cooker power panel are electrically connected with pins of a display screen R8; power output pins of the integrated cooker power panel are electrically connected with pins of an igniter R7; and a fault diagnosis optocoupler module M1 is arranged on the integrated cooker power panel and used for detecting whether load circuits can be normally connected and disconnected or not and transmitting abnormal signals to the display screen R8 to the displayed. According to the integrated cooker fault diagnosis system, the load circuits are diagnosed, and fault diagnosis results are displayed for reminding.

The invention discloses a wireless sensor node fault diagnosis method and device based on deep learning. The method comprises the steps of obtaining SSDAE model source domain training set data; training by adopting source domain training set data to obtain an SSDAE model; migrating the trained SSDAE model to obtain a migration model, and training and correcting the migration model by target domain fault sample data to obtain a final deep fault diagnosis model; and detecting the fault of the wireless sensor in the nuclear power device by adopting the deep fault diagnosis model. The feature extraction capability of the stacked sparse automatic encoder is fully utilized, the deep essential feature extractor is obtained through training on the training set, the internal features of the fault data are deeply extracted, and accurate fault detection and diagnosis are facilitated.

The invention relates to the technical field of gas detection equipment, in particular to a sampling method for an HY-MK05B dew point detection module. The method comprises the following steps: a gasinlet is connected and fixed to a clamping sleeve joint through threads, and a gas outlet is fixed to a gas outlet channel through threads; sample gas enters a filter cavity from the gas inlet below,and a filter unit in the filter cavity fully filters oil substances and particulate matters in the sample gas; the filtered sample gas vertically and upwards reaches a measuring cavity; and after a dew point transmitter measures the components of the sample gas, the sample gas is transversely discharged from the gas outlet at 90 degrees. By adopting the system, the dew point transmitter can be effectively protected, and the service life of the dew point transmitter is greatly prolonged; a good and standard detection environment is created for the dew point transmitter, so that dew point detection data of the sample gas is real and credible; and the sampling structure and the gas main pipeline are of a split structure, and fault maintenance and related gas circuit fault judgment are facilitated.

The invention belongs to an electromagnetic coil used in equipment such as an AC electromagnet and an AC contactor, more particularly relates to an AC electromagnetic coil having a protection device. The AC electromagnetic coil is composed of a coil fixing plate (1), a coil frame (3), a coil (2) and a middle iron core hole (4). The protection device is fixed between the side surface of the coil frame (3) the outer side of the coil (2) and consists of a housing (5), a connection terminal (10), and an upper-layer circuit board (8), a lower-layer circuit board (9) and an indicator (6) lamp, wherein, the upper-layer circuit board (8), the lower-layer circuit board (9) and the indicator (6) are arranged in the housing; a DC start circuit (11), a holding circuit (12), a degaussing circuit (13),a time delay circuit (14) and a power indicator lamp circuit (15) are arranged on the upper-layer and the lower-layer circuit boards (8, 9) in the protection device, and the upper-layer and the lower-layer circuit boards (8, 9) are packaged with the circuit as a whole. The AC electromagnetic coil having the protection device has prolonged service life, improved power utilization efficiency and nonoise, and has dustproof, fireproof and anti-vibration functions.

The invention relates to the field of air conditioning, and discloses a method for detecting clogging of an air conditioning system, so that the temperature of an evaporator or a condenser coil is not dependent on the clogging detection of the air conditioning system. The invention collects and stores the ambient temperature outside the outdoor unit, the opening degree of the electronic expansion valve, the compressor frequency and the compressor winding temperature in real time, and simultaneously calculates the change rate ΔT1 of the ambient temperature outside the outdoor unit within n seconds, the opening degree of the electronic expansion valve The rate of change ΔV within n seconds, the rate of change of compressor frequency ΔF within n seconds, and the rate of change of compressor winding temperature within n seconds ΔT2; when ΔT1 is less than the first temperature change rate threshold Th1, and ΔV=0, When ΔF=0, the relationship between ΔT2 and the second temperature change rate threshold Th2 is compared, and whether the air-conditioning system is blocked is determined according to the aforementioned comparison result. The present invention is suitable for air conditioner blockage detection.

The invention discloses a girder lifting trolley of a lifting mechanism for a railway T-shaped girder bridge erecting machine. The girder lifting trolley comprises at least one set of lifting winch system. According to the lifting mechanism for the railway T-shaped girder bridge erecting machine, a double-helix mechanical rope arrangement device is additionally arranged in a constrained space, so that the disorder of ropes in the winding of a plurality of layers of steel wire ropes on a winding drum body is avoided, and the service lives of the steel wire ropes are prolonged; final braking devices are additionally arranged in the constrained space to realize automatic braking when planetary gear winches overrun and prevent the slip of T-shaped girder pieces, so that the safety performance of the bridge erecting machine is improved; and moreover, a monitoring device is additionally arranged, each final braking device realizes braking when any winch stalls, a main hoist motor is powered off and braked, and a monitoring system displays the winch which stalls, so that failure judgment is facilitated, and overhauling time is shortened.

The invention discloses a data sampling device of a photoelectric direct reading spectrograph. The data sampling device comprises an upper computer and a data acquisition cabinet, wherein the data acquisition cabinet is internally provided with a mother board, a high-voltage power source board, a high-voltage switch board, an element board, a measuring board and a single chip microcomputer board; the mother board is fixedly arranged on a side board in the data acquisition cabinet; the high-voltage power source board, the high-voltage switch board, the element board, the measuring board and the single chip microcomputer board are sequentially arranged in the data acquisition cabinet in parallel; the mother board is provided with insertion holes corresponding to the high-voltage power source board, the high-voltage switch board, the element board, the measuring board and the single chip microcomputer board; two ends of the insertion holes are hinged with buckles, and the corresponding boards are inserted to the insertion holes so that the insertion holes support against the corresponding boards; and the single chip microcomputer board is used for storing a control signal of the photoelectric direct reading spectrograph and sending the control signal to the high-voltage power source board, the high-voltage switch board, the element board and the measuring board through the mother board. The data sampling device has the advantages of simple structure, convenience in fault diagnosis and rapidness in replacement; and by using the data sampling device, the work efficiency is increased, and the detecting cost is reduced.

The invention discloses a heating loop fault judging method. A heating loop is provided with a circulating pump, and the method is characterized in that the heating loop is provided with a differential pressure device at the water outlet end of the circulating pump, the differential pressure device is provided with a water inlet port, a water outlet port and a tapered section located in the middle, the caliber of the tapered section is gradually reduced from the water inlet port to the water outlet port, a pressure sensor is arranged on the differential pressure device, the signal output end of the pressure sensor is connected with a controller, and the controller determines a fault according to the differential pressure value. The differential pressure device is used for judging the flowcondition of the heating water path, whether the heating circulation pump is normally operated or not can be known, whether air in the waterway is too large or not can be judged, or whether the waterpath is blocked or not can be judged, and great convenience is brought to subsequent fault judgment and maintenance.

The invention discloses a wireless sensor. The wireless sensor comprises a sensing module, a wireless module (2), a core processing circuit (4), a power supply management circuit and a wireless modulestarting control circuit. The overall reliability of the wireless sensor is effectively improved.

The invention provides a substation distribution room full-view inspection-tour monitoring system and a management method of the substation distribution room full-view inspection-tour monitoring system, and belongs to the field of substation distribution room full-view inspection-tour monitoring systems. The substation distribution room full-view inspection-tour monitoring system comprises a terminal control system, a branch-shaped looped-network optical-fiber communication system and a dispatching monitoring center. According to the substation distribution room full-view inspection-tour monitoring system, dispatching personnel in front of a dispatching computer can remotely see voltage values, current values, power values, phase-angle values and power factor values of power supply circuits, the input and exit situation of the protection function and a protection constant value of a switch, the working state of the switch and the on-site video of electricity transformation and distribution switching stations, and send a remote-control instruction to a high-voltage switch, and the five-remote-control function which integrates telecommands, telemetering, remote control, remote regulation and remote vision is achieved.

The invention provides a vehicle-mounted charging system of an electromobile. The vehicle-mounted charging system comprises a digital signal processor (DSP) chip and a DSP peripheral circuit and also comprises an input AC undervoltage detection circuit, a charging output polarity detection circuit, a battery voltage detection circuit, a charging voltage detection and fault-tolerant circuit and a charging current detection and fault-tolerant circuit, wherein safe and rapid charging voltage and current are comprehensively made according to self-detection results of all unit circuits and a detection result of an electromobile body controller module, and self-detection data and execution data are uploaded to a an ECU or a central control instrument screen in the electromobile for display through a CAN bus. By the vehicle-mounted charging system, the problems of simple functions and incapability of intelligently cooperating with an electromobile electric management module for charging in the prior art are solved, charging voltage / current is accurately judged through acquiring two-path simulation signals output from the charging voltage / current detection and fault-tolerant circuit by a DSP chip through an analog-to-digital converter (ADC), a corresponding charging method / constant current value charging is made by the DSP chip according to a result, and the battery is ensured to be prevented from being damaged due to voltage overcharging.