48results about How to "Improve maintenance and repair efficiency" patented technology

The invention discloses a draught fan state estimation method and system. The method comprises the steps that online operation data of a draught fan is obtained; the online operation data is preprocessed, and time series data is obtained; whether or not the time series data shows that the draught fan is in a failure state through an online state monitoring model is judged, and a judging result is obtained; when the judging result shows that the draught fan is not in a failure state, the output detection result is health; when the judging result shows that the draught fan is in the failure state, the time series data showing that the draught fan is in the failure state is marked, and a failure detection sample is obtained; the failure type corresponding to the failure detection sample is determined through the online failure detection module; the failure type is output. Accordingly, the time series data is adopted as an input detection sample, compared with single state information, the time sequence is achieved, the time series data is more real, time-varying information of a draught fan system can be reflected, and the failure diagnosis rate of the draught fan is increased.

The invention discloses a device overhauling and maintaining method and device based on augmented reality and a storage medium. The method includes the steps: scanning a preset device by a camera andextracting a characteristic image; matching the extracted characteristic image with a characteristic image stored by a pre-constructed data management center; displaying augmented reality informationassociated with the characteristic image on a screen under the condition of successful matching; inputting contents into preset items of the augmented reality information after maintenance of the preset device is completed. The augmented reality information is used for reminding maintenance staff of maintaining the preset device according to device maintenance item data in the augmented reality information. By the aid of an augmented reality technique, faults of fire-fighting devices are conveniently and efficiently overhauled, maintenance information of the fire-fighting devices is conveniently and efficiently inputted, maintaining and overhauling efficiency is improved, fault data are conveniently inputted in real time, and historical fault data are conveniently viewed at any time.

The invention discloses an online centralized monitoring system for distributed power distribution rooms, comprising a control device, a detection device, a video device, a field bus, a principal computer, a transmission device and a centralized monitoring device. The detection device and the control device are connected with the principal computer through the field bus. The principal computer and the video device are connected with the transmission device. The transmission device is in signal connection with the centralized monitoring device. The centralized monitoring device comprises a cloud server, an SCADA server, a GIS server and a video server. The centralized monitoring device integrates received data information of the SCADA server and the video server with geographic information in the GIS server, outputs geographic location information, topographic map, electric parameters, operation condition, environment parameters and intuitive video information of distributed power distribution rooms, and performs organic integration so as to achieve all-round monitoring on the power distribution rooms. The cloud server cloud-stores all the information and applies the information to cloud sharing, multi-terminal control, data backup, and other network applications. Thus, the system is made networked and intelligent.

Disclosed is a wind power plant operation and maintenance supporting system based on the image stream processing technology. The system is composed of a monitoring network layer, a local command layer, a field command layer and a remote command layer. Wind power monitoring information is transmitted to a local command terminal, a center control room field server and a remote monitoring center remote server through video and audio monitoring equipment in a hierarchical mode. In relevant data processing terminals, physical abnormity automatic diagnosis and recognition of wind power generator set key assemblies are completed through the image stream processing and mode recognition technologies. Remote and real-time field maintenance is commanded by experts based on diagnosis and recognition results and monitoring video and audio information. Commands can also be launched from the local command terminal, the center control room field server and the remote monitoring center remote server to monitoring network equipment, and real-time two-way communication is achieved.

A wind power plant operation and maintenance supporting system is composed of a monitoring network layer, a local commanding layer, a field commanding layer and a remote commanding layer. According to the system, wind power monitoring information is transmitted to a local commanding terminal, a central control room field server and a remote monitoring center remote server in a hierarchical mode through video and audio monitoring equipment, and physical abnormity automatic diagnosis and recognition of key components of a wind power generating set are conducted based on an image stream processing and model recognition technology at the related data processing terminals; a specialist commands filed maintaining and repairing in a remote mode in real time based on a diagnosis and recognition result and monitoring video and audio information; meanwhile, instructions can be sent to monitoring network equipment at the local commanding terminal, the central control room filed server and the remote monitoring center remote server, and real-time both-way communication is achieved.

The invention discloses a washing machine work table assembly and a washing machine with the same. The work table assembly comprises a work table, a hinge, a door cover and a locking member; the worktable is provided with a through clothes take and put port; the hinge is installed on the work table; a latching part is installed on the hinge; the door cover can be movably installed on the work table through the hinge to open and close the clothes take and put port; the latching member is installed close to the hinge; the latching member is provided with a bolt which is movably cooperated withthe latching part; the latching part and the bolt are configured in the way that the door cover is locked when the latching part and the bolt are matched; and when the bolt is disengaged with the latching part, the door cover can be movable. According to the work table assembly of the washing machine in the embodiment of the invention, the door cover is connected to the work table through the hinge; the latching member is installed at one side close to the hinge and positioned at inner side of the work table so as to increase the flexibility of mounting or dismounting the door cover, reduce maintenance cost and effectively avoid damage of the latching member so that the washing machine is more beautiful.

The invention discloses a fault diagnosis and online monitoring method for a draught fan master control system based on data driving, and belongs to the technical filed of fault diagnosis. The method comprises the steps of calculating control limits of normal data of the draught fan master control system; calculating statistical magnitude of fault data of the draught fan master control system; determining fault occurrence time T according to the relation between the statistical magnitude and the control limits and determining the variety contribution rate and the fault variety of each master control system in the collected fault data when determining the time T; calculating the signal to noise ratio, the number of principal elements and the statistical magnitude which correspond to the fault variety in real-time data of the draught fan master control system sequentially, wherein if the statistic magnitude is within the control limits, the draught fan master control system is normal in operating process, otherwise, a sensor which corresponds to the fault variety is adopted in a fault sensor. According to the fault diagnosis and online monitoring method for the draught fan master control system based on the data driving, the use of complicated modeling by mechanism and signal analysis of the draught fan is avoided; multiple faults in the same time frame can be monitored, and the fault capable of being found is multidimensional; the biggest signal to noise ratio is adopted to determine the number of the principal elements, and thus the monitoring sensitivity of the faults is improved.

The invention discloses a train power cube for an alternating current drive locomotive, comprising two same train power sub-cubes, wherein the two train power sub-cubes are connected with a microcomputer control system; each train power sub-cube comprises an independent main circuit and a power supply control system; the power supply control system is used for receiving signals of passenger trains, and has a centralized control function of ensuring the locomotive to supply power to the passenger trains safely. The train power cube for the alternating current drive locomotive, disclosed by the invention, overcomes the problems that the whole systematization is worse and the locomotive is inconvenient to back to a garage for overhauling in the prior art.

The invention discloses a traffic accident alarm system based on a road guardrail, which comprises the road guardrail, a communication circuit, a fault collecting terminal and a remote alarm platform, wherein the fault collecting terminal is reliably connected with the road guardrail, is connected with the remote alarm platform through the communication circuit, and comprises a data processing module, a sensor module, a driving module and a communication module, and the driving module is respectively and electrically connected with the data processing module, the sensor module and the communication module; the remote alarm platform consists of a data processing module, a driving module, a communication module, an I / O (input / output) module, a buzzer, a keyboard and a display module, the driving module is respectively and electrically connected with the data processing module, the communicant module and the I / O module, and the I / O module is further electrically connected with the buzzer, the keyboard and the display module. According to the invention, the damage condition of the guardrail can be accurately positioned, so that the maintenance and repair efficiency of a road can be improved, and the traffic accidents can be indirectly positioned to a certain degree.

The invention discloses a lifting type easy-folding rod light wall folding system. The lifting type easy folding rod light wall folding system comprises an easy-folding rod body, navigational light branch arms and navigational lights; a navigational tower easy-folding rod automatic folding arm further comprises a folding device, the folding device is arranged between the easy-folding rod body and the navigational light branch arms, one end of each upper end folding arm of the folding device is connected with one end of a corresponding lower end folding arm, the other end of each upper end folding arm is connected to an upper end chuck, and the other end of each lower end folding arm is connected to a lower end chuck; the upper end chuck and the lower end chuck are fixed to a lead screw, and a pair of sliding rails are arranged between the upper end chuck and the lower end chuck; a motor is connected to the end portion of the lead screw and fixed to the end portion of the easy-folding rod through a base; and the navigational light branch arms are fixed to the upper end folding arms. The lifting type easy-folding rod light wall folding system is convenient to operate, the span of the navigational light branch arms is reduced, high-altitude maintenance is changed to near-ground maintenance, the maintenance convenience is improved effectively, and the maintenance efficiency is improved and the safety of maintenance staff is guaranteed simultaneously.

The invention discloses a cable maintenance device capable of preventing a cable from icing and freezing, and the device comprises a front function plate, the top end surface of the front function plate is fixedly connected with a telescoping fixed box, the interior of the telescoping fixed box is fixedly connected with a telescoping installation rod, and the tail end of the telescoping installation rod is fixedly connected with a connecting block. The connecting block is fixedly connected with a rear function plate, and a take-up cavity is formed in the front function plate. According to thecable maintenance device capable of preventing the cable from icing and freezing, the device extends in snowy days, covers the outer layer of the cable and injects warm water into the device at the same time, so that the cable is prevented from accumulating snow and ice, the upper side of the device is prevented from accumulating snow, and the device has a better long-term use effect; the device has a cable sheath damage repairing function, dust and impurities on the surface layer of the cable can be removed in the stretching process before repairing, and the repaired part can be immediately subjected to heat fixation after repairing of the damaged part is completed.

The invention relates to a heat source system service quality control system. The system comprises a field device layer which is field monitored device group and comprises a motor and a water pump unit in the operation; a sensor network comprising a pressure sensor, a flowmeter, a liquid level meter, a thermal resistor (couple), a temperature and humidity sensor, a voltage and current sensor and avibration sensor, and used for detecting the operation parameters of the field device; an intelligent terminal layer; an automation system interface for collecting and transmitting SCADA data of a DCS system to a cloud platform or an enterprise data center in a local area network mode; a field gateway layer for collecting the state data of the regional device group of each Lora intelligent terminal in the region in a scanning mode, and transmitting the collected state data to a Lora-4G or a Lora-Lan gateway; and a network communication layer for summarizing the data transmitted by the Lora bidirectional gateways on each site and transmitting the data to the cloud platform or the enterprise data center through 4G or Lan network communication.

The invention discloses a wall-mounted drawing type combined LED display screen, relates to the field of LED display screens, and provides the following scheme for solving the problems that an existing LED display screen is difficult to install in the earlier stage, very inconvenient to maintain and overhaul in the later stage and low in maintenance and overhaul efficiency: the wall-mounted drawing type combined LED display screen comprises an installation frame, a movable inner frame and an LED display assembly; a drawing assembly is installed in the installation frame movably; the drawing assembly is fixedly connected with the movable inner frame, the movable inner frame is drawn in the mounting frame through the drawing assembly, mounting beams are fixedly arranged in the movable innerframe at equal intervals from top to bottom, and the LED display assemblies are sequentially clamped on the mounting beams through mounting notches in a sliding mode.\ Through the design of the drawing assembly and the movable inner frame, the LED display assembly installed in the movable inner frame can be drawn out to be away from the installation wall to form a maintenance space, the LED display assembly is installed on the installation cross beam of the movable inner frame, and the maintenance efficiency and the operation convenience are improved.

The invention discloses a cable working well lid. The cable working well lid comprises a base frame and a transparent substrate. The base frame is arranged at the wellhead part of a cable working well. The transparent substrate is arranged on the base frame. Spacing holes are formed in the transparent substrate. Fixing holes are formed in the base frame. The spacing holes are in butt joint with the fixing holes in a matching manner, and external bolts penetrate through the spacing holes. Anti-theft bolt reserved holes are formed in the base frame. The visual degree of a cable pipe trench is enhanced greatly by virtue of the transparent well lid, so that operating personnel can grasp the situation of facilities, such as an in-trench cable, a bracket and a grounding device, without opening a lid plate, the power cable line inspection efficiency is improved, and a guarantee is provided for the safe operation of the cable line is ensured.

The invention discloses a multifunctional teaching device based on a computer multimedia technology. The device comprises an instrument. Four corners on the bottom of the instrument are welded with supporting feet. The front surface of the instrument is provided with a lens, and the lens is embedded into the front surface of the instrument. The rear surface of the instrument is connected with a maintenance door through a hinge. The maintenance door is arranged in the device, and the maintenance door is connected with one end of the instrument through the hinge, and the other end is clamped with an instrument groove through a maintenance door bulge and is absorbed and fastened through a limiting magnet and fixing magnet, so that fixation of the maintenance door and the instrument is more stable. When the internal part of the instrument needs overhaul, the maintenance door is easy to open to perform maintenance and overhaul on the internal part of the maintenance door, and efficiency ofmaintenance and overhaul is improved. A detachable dustproof filter screen and a dustproof filter screen projection can be embedded into a concave portion of the instrument, so sealing property is improved, dust would not enter the instrument is ensured when the dustproof filter screen is pulled. When the dustproof filter screen is to be cleaned, the dustproof filter screen is pulled out from a sliding groove.

The invention relates to the technical field of power distribution cabinets. The invention relates to a section bar and a three-door power distribution cabinet body. The sectional material comprises afirst folded plate and a second folded plate. The first folding plate is bent into a right-angled folding plate; the second folded plate is bent into a W-shaped folded plate; the end parts of the twosides of the right-angled folded plate are bent inwards to form covered edges; the folded sections at the two ends of the W-shaped folded plate are respectively attached to the two folded sections ofthe right-angled folded plate; one parts of the folded sections at the two ends of the W-shaped folded plate are respectively positioned in the covered edges at the two ends of the first folded plate; the three-door power distribution cabinet body comprises a frame. The rack comprises four vertical stand columns. A top beam is fixed between every two adjacent stand columns. Cabinet doors are installed on the three side faces of the cabinet body. According to the three-door power distribution cabinet body provided by the invention, the protection grade is ensured to reach IP55, and the installation, wiring and later maintenance efficiency of electric appliance components of the power distribution cabinet are greatly improved at the same time.

The invention is a distributed distribution automation station terminal DTU based on wireless transmission technology. The terminal comprises a core unit and a plurality of loop units, wherein the core unit communicates with a master station through an optical network, and each of the loop units is managed through a WIFI network; the core unit receives a command from the master station and forwards the command to the loop units for control, the loop units perform corresponding operations and control according to the situation of collection and calculation, and simultaneously report to the coreunit, and the core unit forwards the information to the distribution master station. The distributed distribution automation station terminal has the advantages of: 1) facilitating repair and maintenance and improving the efficiency for maintenance and repair since a large amount of physical cables are not needed for laying during a site operation by applying the wireless network and loop units for communication through the core unit, resulting in no need to check every cable when the equipment fails; and 2) effectively reducing the install difficulty of site operations, improving the construction and installation efficiency, and obviously reducing the cost.

The invention relates to a self-lubricating slide plate. The self-lubricating slide plate comprises a slide plate body, a sliding plate and tongue rails; the slide plate body is fixed to a rubber pad in an assembled mode, and the rubber pad is placed on a switch tie according to the position of a nail hole; a self-lubricating zone is arranged in the middle of the surface of the sliding plate; a steel ball assembly is embedded in the self-lubricating zone, the steel ball assembly is embedded in the surface of the sliding plate through the interference fit and internally embedded with steel balls, when installed, the steel ball assembly is internally coated with lubricating grease so that a self-lubricating function is achieved in rolling of the steel balls, and the upper parts of the steel balls all protrude the surface of the sliding plate; the tongue rails are placed above the steel balls in the self-lubricating zone; and a basic rail is arranged on one side of the top surface of the slide plate body, and a bottom rail rubber pad is sandwiched between the bottom of the basic rail and the top surface of the slide plate body. The self-lubricating slide plate is simple in structure, low in manufacturing cost, convenient to install, low-technological demand in manufacturing, installation, use environment and maintenance, convenient to maintain, capable of effectively reducing the conversion failure and the amount of maintenance workload and capable of improving maintenance efficiency.

The invention discloses a novel safety bolt of a sliding block of a press machine. The novel safety bolt comprises a positioning plate, a positioning block, a first connecting plate, a second connecting plate, a connecting pin shaft and a bolt column, and is characterized in that mounting holes, fixing blocks and a limiting block are arranged on the positioning plate, a bearing shaft is arranged between the fixing blocks, a mounting hole, a buffer pad and a limiting pin are arranged on the positioning block, one end of the first connecting plate is connected to the bearing shaft, the other end of the first connecting plate is provided with a connecting ring, one end of the second connecting plate is provided with a connecting ring, the other end of the second connecting plate is provided with a bolt sleeve, the connecting pin shaft penetrates through the connecting ring of the first connecting plate and the connecting ring of the second connecting plate respectively, and the bolt column penetrates through the bolt sleeve. According to the novel safety bolt, a shaft shoulder is arranged on the bolt column, a spring is arranged between the shaft shoulder and the bolt sleeve, and part of impact force generated by sudden drop of the sliding block can be buffered through the spring.

The invention provides an intelligent state evaluation system for thermal equipment. The intelligent state evaluation system comprises a data server and an application client; the application client is configured to a data acquisition terminal of each piece of thermal equipment, and the data acquisition terminal monitors a measuring point area where the data acquisition terminal is located and acquires the operation state and operation data of the thermal equipment; the data acquisition terminal uploads the data of the thermal equipment to the data server; the data server is configured with a function of processing and analyzing data of the thermal equipment, and is used for acquiring and monitoring information of all pressure, temperature, flow, liquid level, instrument measuring point positions and actuating mechanism positions of all the thermal equipment in a measuring point area, and displaying all monitoring data at the same time; when a certain monitoring data exceeds a threshold value, an alarm prompt is given. The data acquisition terminal is adopted to record and upload the maintenance data of the thermal equipment, so that the whole-process management of the maintenance data of the thermal equipment is realized, and the maintenance efficiency of the thermal equipment is improved.

The invention discloses a fault detection device and method for a charging gun and a vehicle gun base. The fault detection device comprises a control unit, a first detection unit, a second detection unit, a first analysis unit and a second analysis unit. The first detection unit is connected with the charging gun end, the first analysis unit is connected with the first detection unit, and the first detection unit and the first analysis unit are used for acquiring operation data of the charging gun end; the second detection unit is connected with the gun seat end of the vehicle, the second analysis unit is connected with the second detection unit, and the second detection unit and the second analysis unit are used for acquiring operation data of the gun seat end of the vehicle; the first detection unit, the second detection unit, the first analysis unit and the second analysis unit are all connected with the control unit; the control unit is used for obtaining the operation data and obtaining a fault detection result of the charging gun end or the vehicle gun base end. The device can judge the faults of the charging gun end and the vehicle gun seat end at the same time, quickly position the fault positions and improve the maintenance and repair efficiency.

The invention relates to a novel cold heading device for automobile bolt machining. The novel cold heading device comprises a body, wherein a cold heading die and a mechanical arm are arranged in thebody; the mechanical arm and the cold heading die are matched to transfer a machined part; a monitoring camera is further arranged in the body; a protective cover shell is arranged outside the monitoring camera; the protective cover shell is formed by splicing a front end plate, a rear end plate, a left side plate, a right side plate, a top plate and a bottom plate in a sealed manner; a lens holeis formed in the front end plate; a lens is connected in the lens hole; the front end of the lens is sleeved with a support; a rotary air cylinder is arranged on the top plate; an air cylinder is connected to the rotary air cylinder; a pull rod is connected to an air cylinder rod of the air cylinder; a protective cover is arranged at the end, away from the air cylinder rod, of the pull rod; and the pull rod is connected with the protective cover through a linkage assembly. The novel cold heading device has the beneficial effects that the protective cover is convenient to replace, pictures shotby the monitoring camera are clearer, and the judgment accuracy of technicians is improved.

The invention discloses a water supply tank with self-cleaning function, which belongs to the technical field of water supply tanks, and comprises a water tank body, the top of the water tank body is slidably connected with a filtering mechanism, the inner cavity of the water tank body is provided with a water storage mechanism, and the water tank body Both sides of the main body are equipped with a cleaning mechanism, the filter mechanism includes a water pump, the bottom of the water pump is fixedly connected with a mounting plate, the bottom of the mounting plate is fixedly connected with a mounting seat, and both sides of the mounting seat are fixedly connected with blocks , a card hole is opened on one side of the card block. In the present invention, the bacterial water liquid is quickly discharged through the designed connecting pipe, thereby satisfying the cleaning effect of the water diversion tank, and the water diversion tank on both sides can clean the water diversion tank on one side independently, so that the water diversion tank on the other side The cabinet works normally, and the water liquid in the water distribution tank on the cleaning side can be filtered by the filter element frame when it is attracted by negative pressure, so as to ensure the cleanliness of the water supply in the water distribution tank on the normal side, thereby effectively avoiding the interruption of water supply caused by the cleaning work.

The invention discloses a pavement comprehensive maintenance vehicle. The pavement comprehensive maintenance vehicle comprises a vehicle chassis, a material mixing bin and an asphalt box, wherein thematerial mixing bin and the asphalt box are arranged on the vehicle chassis, and an asphalt conveying pipeline are arranged between the material mixing bin and the asphalt box; the material mixing bincomprises a front cabin body and a rear cabin body, wherein the front cabin body and the rear cabin body are arranged on the vehicle chassis, one side of each bin cover is provided with a corresponding material receiving groove, and discharging ports of the front cabin body and the rear cabin body both communicate with an upper port of a hopper; the asphalt box is internally provided with a metering box, wherein the lower part of the metering box is connected with an asphalt conveying pipeline, the asphalt conveying pipeline is introduced towards the rear cabin body through a port of a three-way joint and towards the front cabin body through the other port of the three-way joint; and an asphalt output pump is connected with an asphalt gun motor fixedly arranged on the outer side of the asphalt box through an output shaft. The pavement comprehensive maintenance vehicle has complete asphalt pavement disease treatment function, namely, pit slots, cracks, ruts and other diseases can be treated through the asphalt output pump and the asphalt gun, on-site production of new asphalt mixture, asphalt pavement on-site heat regeneration, asphalt distributing, crack filling and sealing and other functions can be achieved.

The invention discloses an electrical automation industrial management system. The management system comprises a data storage unit, a central controller, an equipment detection unit, a data log unit,a processing terminal, a user unit, electric control equipment, motor equipment, a first alarm, a second alarm and a flow monitoring unit. An operator can operate the electric control equipment through the central controller, monitors and receives information transmitted by the equipment detection unit in real time through the central controller, can monitor the operation load condition of the motor equipment according to the load pressure sensor, and can read the database through the data read-write unit; and a data report, data analysis and a data log can be checked by the operator through the data log unit, and when the photoelectric sensor or the load pressure sensor monitors that the operation is abnormal, the operator can directly control the motor equipment to be turned off throughthe circuit control unit or the electric control equipment, so that accidents and faults are avoided.

The invention discloses an electric appliance information control system based on GPS positioning. The electric appliance information control system is characterized by comprising an acquisition and recording module, a GPS positioning module, a communication module, a subcontrol module and a master controller, wherein the acquisition and recording module is used for acquiring and recording usage information of an electric appliance; the GPS positioning module is used for positioning the electric appliance; the communication module is used for being in communication connection with the master controller; the subcontrol module is respectively connected to the acquisition and recording module and the communication module and is used for uploading the information of the electric appliance, which is recorded by the acquisition and recording module, to a terminal through the communication module, and executing commands issued by the master controller to the corresponding electric appliances;and the master controller is used for acquiring and analyzing the information of a plurality of electric appliances and issuing the commands to the electric appliances. According to the system, the information of an electric appliance using process is transmitted to the master controller through the communication module, and the master controller carries out statistics and analysis on the information, when the electric appliance breaks down, the master controller can send the command to the subcontrol module, the electric appliance is turned off, and the safety performance of the electric appliance is improved.

The present invention relates to the technical field of compensators, and discloses an intelligent connection safety compensator for oil field photovoltaic docking high-voltage distribution network, which includes a base plate and a compensator body, the top surface of the base plate is fixedly connected with a mounting platform, and the compensator body is fixedly installed There is a compensator cabinet on the top of the platform and above the bottom plate. The compensator cabinet includes a protective cover. The left and right inner walls of the protective cover are respectively fixedly connected with connecting sleeves. Connect the limit support column, the bottom end of the limit support column is provided with a manual lifting control mechanism, the bottom surface of the bottom plate is provided with a lifting linkage mechanism, the lifting linkage mechanism includes a worm and a worm gear rod, and the worm and the central outer wall of the worm gear rod are meshed and connected to protect The inner top of the cover is provided with a radiator, which is convenient for the operator to maintain and overhaul the compensator body, and at the same time facilitates the disassembly and installation of the compensator body on the installation platform, which effectively improves the efficiency of maintenance and overhaul.

The present invention provides a method, device and terminal for detecting the operating state of a photovoltaic power supply system. The method includes: obtaining operating parameters corresponding to time nodes of the photovoltaic power supply system, the operating parameters at least including ambient temperature, voltage and current; The node is a label, and the operating parameters corresponding to the time nodes are constructed into an operating parameter set; the operating parameter set whose ambient temperature is a preset temperature is selected as a sample comparison unit; the sample comparison unit The operation parameters of the sample comparison unit are compared with the standard value; the operation status of the photovoltaic power supply system is obtained according to the comparison result of the operation parameter of the sample comparison unit and the standard value. The present invention changes the way of passively checking and determining the cause one by one into actively locating the cause of the problem, improves the efficiency of maintenance and repair, and reduces the maintenance cost.