38results about How to "Timely detectability" patented technology

The invention provides a recognition method of micro-short circuiting of batteries. Whether a series-connected battery pack has micro-short circuiting, which specific battery cell has micro-short circuiting and what time micro-short circuiting occurs can be judged by judging whether an off-group point exists in voltage derivative or voltage differential of each battery cell of the series-connected battery pack at the same time, and the condition that micro-short circuiting is internal short circuiting or external short circuiting can be distinguished with an information entropy judgment method. The recognition method of micro-short circuiting of the batteries plays a key role on safety improvement of products, such as an electric car and an airplane, utilizing the power battery pack.

The invention discloses a voltage sag detection method for S-transformation on the basis of time-frequency gathering characteristic criteria. The method includes the first step of obtaining voltage sag disturbance signals to be detected generated in a power distribution network, the second step of conducting analog-digital conversion on an obtained voltage sag disturbance signal model, the third step of conducting optimized selection on gaussian time-frequency window width adjustment parameters in an improved S-transformation method according to time-frequency gathering characteristic criteria, substituting the gaussian time-frequency window width adjustment parameters selected according to empirical values, and conducting characteristic extraction, detection and analysis on digital signals to be detected in the second step through the improved S-transformation. Selection of condition parameters of a gaussian window function is optimized through the constraint condition that the value of a time-frequency gathering characteristic expression is maximized when the signals are analyzed through the improved S-transformation, and the improved S-transformation is applied to characteristic extraction, detection and analysis on voltage sags. The voltage sag detection method for S-transformation on the basis of time-frequency gathering characteristic criteria has the higher detection accuracy degree and signal denoising capacity on transient-state electric energy quality signals.

The present invention discloses an intelligent floating island water treatment apparatus, which comprises a frame (1), a water treatment assembly (2), an aeration system (3), a buoyancy regulating system (4), a total control system (5), an electricity supply system (6), a power system (7), and a positioning system (8). According to the present invention, the floating island carries a variety of online detection equipment and is provided with the power system, such that the remote and intelligent control on the floating island can be achieved according to the various fed-back environmental parameters; and the resources of the floating island can be effectively saved, the treatment efficiency is increased, the automated control is easily achieved in the large water body, and the management cost can be saved.

The invention discloses an industrial process fault diagnosis method based on high order correlation and belongs to the field of industrial process monitoring. According to the method provided by theinvention, high order correlation information in measurement data of each sensor is obtained without supervision from an angle of representing learning through utilization of a stack sparse self-coding network, and three monitoring indexes SRE, M2 and C are provided for obtained high order correlation characteristics. In a hierarchical learning mode, according to the method, change of a small fault or an early fault in an industrial process is represented relatively finely, so detection of whether the fault occurs or not is facilitated. According to the provided monitoring indexes, whether process operation is kept in a control domain or not can be monitored and certain guidance for identifying a fault type is provided. In an unsupervised learning mode, influence of insufficient sample labels and imbalanced data in the industrial process is not influenced. The method has important practical significance in solving an industrial process monitoring problem in practice.

The invention relates to an exhaust monitoring device, and in particular to a vehicle-mounted vehicle exhaust monitoring device. The invention is aimed at solving the problem that a driver cannot monitor vehicle exhaust in real time as a vehicle runs. The vehicle-mounted vehicle exhaust monitoring device comprises a fixing mechanism, a vehicle exhaust detector, a data transmitter, a data wire, anda vehicle-mounted data display, the vehicle exhaust detector is mounted at the orifice of a vehicle exhaust pipe through the fixing mechanism, a probe of the vehicle exhaust detector is arranged in the center of the orifice of the vehicle exhaust pipe, the vehicle exhaust detector is connected to the data transmitter through the data wire, and the data transmitter is connected to the vehicle-mounted data display arranged in the cab through the wires. The invention belongs to the field of environmental protection.

The invention discloses a system and method for controlling a bus rapid transit (BRT) safety door. The system comprises a central interface disc PSC, a plurality of uplink safety doors, a plurality of downlink safety doors, an integrated supervisory control system (ISCS) and a signal system SIG. The central interface disc PSC comprises a state monitoring unit, an industrial control computer, an exchanger, uplink logic control units and downlink logic control units. The industrial control computer is respectively connected with the ISCS and the signal system SIG, the industrial control computer is respectively connected with the uplink logic control units and the downlink logic control units through the exchanger, the uplink logic control units are respectively connected with the uplink safety doors, and the downlink logic control units are respectively connected with the downlink safety doors. Every side safety door control system is controlled through an independent loop, switches of every safety door are controlled through a plurality of control ends, the system is flexible to operate, and the problem that a door leaf cannot be opened and closed due to faults of some control end is solved.

The invention relates to a shipborne resonant column instrument which is composed of torsional vibrating electromagnetic driving devices, a longitudinal vibration device, a balancing base and a detection device, wherein four torsional vibrating magnets respectively arranged in four driving coils are respectively fixed at four end points of a right-cross-shaped swing arm through screws, the four driving coils are respectively arranged in four coil sleeves, and the four driving coils are respectively connected with a power supply through cables so as to form four sets of torsional vibrating electromagnetic driving devices; the four sets of torsional vibrating electromagnetic driving devices are respectively fixed on a supporting inner cylinder at equal angles. According to the invention, a problem that the test accuracy of an existing resonant column instrument is affected by the swinging of an experimental bench is solved, so that the resonant column instrument which is widely applied to geotechnical tests can be applied to sea exploration vessels, and can be used for timely detecting and analyzing collected sediment samples, and therefore, the collected sediment samples are not required to be taken to a land laboratory to be detected and analyzed. In such a way, carrying and storage are omitted, and manpower, material resources and time are saved.

The invention provides a safety inspection system, and the system comprises an inspection device and a monitoring terminal. The inspection device is wirelessly connected with the monitoring terminal;the inspection device comprises a detection device and a safety operation prompting device; the detection device comprises a positioning module, and the positioning module is used for acquiring the position information of the current position of the inspection device and sending the position information to the monitoring terminal; and the monitoring terminal is used for judging to-be-inspected equipment of an inspector according to the position information and controlling the safety operation prompting device to prompt safety operation information of the to-be-inspected equipment. According tothe safety inspection system provided by the invention, the safety operation prompt is realized, and the working efficiency and quality of workers are improved.

The embodiment of the invention discloses intelligent street lamp monitoring equipment based on the Internet of Things, a street lamp monitoring system and a street lamp monitoring method. The intelligent street lamp monitoring equipment comprises: an angle detection module which is arranged on the lamp pole of a street lamp and used for detecting the real-time angle of the lamp pole; and a control module which is connected with the angle detection module, and is used for detecting whether the lamp pole is in an inclined state or not based on the real-time angle, generating different types of detection data based on whether the lamp pole is in the inclined state, outputting the detection data to a cloud platform, and determining whether to carry out fault reminding or not by the cloud platform based on an analysis result of the detection data. By configuring the intelligent street lamp monitoring equipment, the inclination angles of street lamp poles distributed at various geographic positions can be remotely known in real time, and the information of the street lamps with the inclination angles exceeding the range of the lamp poles can be automatically displayed, so that the effects of prompting and alarming are achieved. Therefore, street lamp faults can be detected in time and intervened in advance, and potential traffic safety hazards are eliminated actively.

The invention discloses a laser double-sided machining alignment technology. The technology includes the following steps: placing a to-be-machined PCB on a machining platform through a manual manner;performing clockwise wiping on the edge of the PCB through a dry paper towel; and blowing dust on the edge of the PCB through a blower, wherein the rated voltage of the blower is 220 V, and air outputis 2.2 m<3>/min. Through machining alignment, a laser head can be controlled to work by two sets of alignment probes, so that the blind hole aligning machining operation of the upper and lower surfaces of the PCB can be accomplished, and the machining quality of the blind holes can be enhanced; through the addition of a positioning process, fixing on the PCB before machining alignment can be performed, and the problem of poor blind hole machining quality of the PCB caused by position deviation during machining can be avoided; and through the addition of a cooling process, rapid cooling treatment can be performed on the blind holes with high temperatures, and users can conveniently and timely check and detect the machining quality of the blind holes.

The invention discloses a short-circuit current analysis system, comprising: a GIS interface, a database, a short-circuit analysis module, and several clients. The short-circuit analysis module includes a processor, a topology and an electrical analysis module. The client is connected to the short-circuit analysis module, which is connected to the Database, database connection GIS interface. The invention also discloses an analysis method of the short-circuit current analysis system. It can realize the timely detection and evaluation of the short-circuit fault in the circuit, guarantee the safety of the circuit operation, and provide a reliable evaluation method for the troubleshooting of the circuit fault. It is of great significance to the normal operation of the circuit.

The invention relates to the technical field of building embedded parts, in particular to a building embedded part with a safety alarm device. The building embedded part with the safety alarm device comprises bolts, a positioning steel plate, gaskets and sleeves; one end of each sleeve is fixedly connected with the positioning steel plate; the other end of each sleeve is in threaded connection with one end of the corresponding bolt; the other end of each bolt is fixedly connected with the corresponding gasket; pressure sensors which are used for detecting the pressures stressed on the positioning steel plate and the sleeves are respectively arranged on each of the inner sides of the positioning steel plate and the sleeves; the output end of each pressure sensor is connected with the input end of a controller; the output end of the controller is connected with the input end of an alarm device. According to the building embedded part with the safety alarm device, the requirement on high-rise building load is met under the condition of low cost; the installation and operation are simple; the pressures stressed on the positioning steel plate and the sleeves are detected through the pressure sensors; when one pressure exceeds a preset value, an alarm is given to attract the attention of a worker, so that an embedded part of a curtain wall is detected and repaired.

The invention belongs to the field of communication instruments, and relates to a communication instrument automatic monitoring device. The communication instrument automatic monitoring device is formed by a target pipeline, more than one communication instrument and a filed monitoring station, wherein the more than one communication instrument is mounted on the target pipeline, the communication instruments are all connected with series communication equipment and a field detection station in series in sequence through lines, the series communication equipment is connected with an Ethernet bus through a line, a server, a database, fault detection equipment and dispatching equipment are connected on the Ethernet bus in parallel, and the Ethernet bus is connected with the Internet through a line and is connected with a remote monitoring station through a gateway. The communication instrument automatic monitoring device has monitoring and detection functions, the mode of testing the communication instruments through a communication mode is adopted in the whole process, the whole process is completely controlled by computers, no man is involved, data are collected accurately and reliably through a digital communication mode, and the testing precision of a test system is further improved.

The invention discloses an optical fiber detection method based on optical cable routing. The method comprises the following steps: acquiring an initial oscillogram of the optical cable routing; and obtaining and displaying the state information of the optical fiber according to the initial oscillogram, wherein the state information of the optical fiber comprises at least one of first state information about whether the starting end of the optical cable is branched, second state information about the trend of the optical cable, third state information about whether the starting end of the optical cable is a passing well, fourth state information about whether the starting end of the optical cable is coiled and fifth state information about the end point of the optical cable. The beneficialeffects of the optical fiber detection method are that the optical fiber detection method solves a problem in the prior art, can timely and effectively obtain the state information of an optical cable route, reduces the inspection cost, achieves the more efficient optical fiber detection and display, and brings convenience to a user for quickly going to an optical cable apparent fault position for timely and effective maintenance or detection. Certainly, any product implementing the method does not necessarily need to achieve all the advantages mentioned above at the same time.

The invention relates to a processing device for sorting non-defective capacitor shells and defective capacitor shells. The processing device comprises a workbench. An eight-station indexing disc is arranged on the workbench and is provided with tool molds. A punching mechanism which cooperates with the tool molds and is used for multi-procedure shell punching and a discharging mechanism used fordetecting defect forming workpieces and completing workpiece collection are arranged on the workbench. A control system used for controlling the eight-station indexing disc, the punching mechanism andthe discharging mechanism is further included. The punching mechanism comprises a pre-flanging mechanism, a flanging mechanism and a stamping mechanism which are distributed in sequence. The discharging mechanism comprises an SCARA robot, a visual detection device, an air blowing device and a waste edge collection trough. According to the processing device, pre-flanging, flanging and stamping processing and manufacturing on workpieces can be automatically completed, defective products in the workpieces can be detected and removed in time, the high percent of pass of the workpieces of the samebatch is ensured, the size of the whole device is small, stations are distributed annularly, the span between the stations is small, operation is simple, and use is convenient.

The invention relates to an anti-leakage fishing device for an underwater robot, including the body, signal lights and control tubes, A camera is arranged above the front side of the machine body, anda probe is installed under the front side of the machine body, the invention relates to an elastic rod which is arranged below a bottom extension line of a track, which can be used for turning the soil in the bottom layer, through the setting of the magnetic plate, which can adsorb and collect the metal substance on the bottom of the water, By setting up the collection box, the plastic material floating in the water can be collected and treated by the robot arm, At the same time, the screen door is provided with a rotating structure composed of a connecting bolt and a collecting box and an elastic structure composed of a spring and the collecting box, Under the action of the spring and the connecting bolt, the net door can be automatically closed under the action of no external force, sothat the internal garbage is blocked and treated, the garbage collected is prevented from overflowing, and the difficulty of garbage capture and collection is increased. The invention protects the garbage by setting a cover.

The invention relates to the technical field of temperature control equipment, and provides a temperature detection device, storage equipment, a refrigerator and a storage chamber temperature control method. The temperature detection device comprises a sealed cavity and a pressure sensing module arranged in the cavity; the cavity is used for storing a phase change medium capable of generating phase change; and the pressure sensing module is used for collecting pressure in real time in the process that the phase change medium in the cavity changes from the first phase to the second phase. According to the temperature detection device, the storage equipment, the refrigerator and the storage chamber temperature control method, whether the target temperature is reached in the storage chamber or not can be judged in time according to the pressure change generated on the pressure sensing module when the phase change medium configured in the device generates phase change, and the wrong influence of external factors of the storage chamber on temperature detection is avoided; and energy loss is caused.

The invention discloses a circuit and film for deformation detection, which are arranged on the surface to be tested. The circuit includes a plurality of pixel units, including (n/2) rows*m columns, and each pixel unit has a first input terminal, The second input terminal and the output terminal, the first input terminal is used to receive the first voltage signal, the second input terminal is used to receive the pulse signal, the output terminal is used to output the current signal, when the current signal changes, then It is determined that the area of ​​the corresponding pixel unit changes, and the surface to be measured is deformed. For the circuit and film of the present invention, when the output current signal changes, it means that the area of ​​the corresponding pixel unit has changed, and since the circuit and the film are attached to the surface to be tested, it means that the surface to be tested has been deformed. Therefore, it is convenient for users to detect and replace abnormal products in time, and accidents are avoided. Moreover, the detection method of the present invention is intuitive and easy to operate.

The invention relates to a detecting cart of iron core fault of a handhold type generator. The detecting cart is formed by improving on the basis of the prior art. The main improving point of the detecting cart of the iron core fault of the handhold type generator is as below: (1) a handle and wheels are added; (2) both sides of a chassis are symmetrically equipped with a pair of frame width adjusting rods; the frame width adjusting rods are respectively inserted to an insert hole of a fixing cross rod of a corresponding detecting coil and fixed by a screw; (3) magnets are respectively inlaid on the bottom face of the chassis and the bottom faces of a pair of detecting fixing cross rods. The detecting cart of the iron core fault of the handhold type generator has the beneficial effects of being convenient to use and capable of improving the detection accuracy and detection speed.

The invention provides a vehicle configuration state monitoring method and device, a storage medium and computer equipment. The method comprises the steps that vehicle information of all vehicles is acquired; acquiring configuration parameters of each vehicle; the configuration parameters are obtained and fed back by each vehicle through self-inspection according to a pre-issued parameter acquisition task; the parameter acquisition task comprises a to-be-acquired parameter type of each vehicle; determining preset baseline configuration corresponding to each vehicle according to the vehicle information of each vehicle; wherein the parameter type in the preset baseline configuration is consistent with the to-be-collected parameter type; if any configuration parameter of the vehicle exceeds the parameter limit in the preset baseline configuration corresponding to the vehicle, generating an abnormity prompting task; triggering an exception prompt based on the exception prompt task; the abnormal prompt is used for prompting abnormal vehicles with abnormal configuration states and abnormal parameters of the abnormal vehicles. According to the invention, the configuration state of each vehicle in the motorcade can be monitored, and a basis is provided for ensuring the reliable operation of the automatic driving motorcade.

The invention discloses a visual hot compress glasses lens structure, and relates to the technical field of glasses accessories, the visual hot compress glasses lens structure comprises a right glasses frame and a perforated moisturizing film, one side of the right glasses frame is connected with a left glasses frame through a nose bridge rack, the inner side of the left glasses frame is provided with a lens, one side of the left glasses frame is provided with a film pasting frame, one side of the left glasses frame is provided with a connecting block, and the connecting block is rotationally connected with a connecting convex block through a connecting concave block. According to the hot compress glasses, the lenses, the polarized light layers and the heating layers are arranged, the main structures of the lenses of the hot compress glasses comprise the spectacle lens layers, the optical adhesive layers, the polarized light layers and the heating layers, the spectacle lens layers are generally made of materials such as glass lenses, resin lenses and PC lenses, and the polarized light layers have an anti-blue-light effect; and the heating layer is a combined structure layer with metal grids as a main part and graphene as an auxiliary part, the heating layer is of a transparent structure, and due to the fact that the heating layer is of the transparent structure, it can be guaranteed that the vision of a wearer cannot be affected when the heating layer is subjected to hot compress.

The invention discloses an image processing method and device and electronic equipment. The method comprises the steps: responding to an obtained image, and detecting the image; and when it is detected that a first area in the image and an object in the image at least meet a specific distance range, processing the image, wherein the brightness of the first area meets a specific brightness range. By implementing the method and the device, the object interfered by the strong light in the image can be detected and repaired in time, the display effect of the object interfered by the strong light is improved, and the user experience is improved.

The invention discloses a vehicle recording system based on a garage. The vehicle recording system comprises a garage management system and a vehicle-mounted registration system, wherein the garage management system comprises a vehicle access recording unit, a vehicle travel recording unit, a vehicle oil mass recording unit, a vehicle charging unit, a vehicle management and analysis unit and a vehicle data storage unit; the vehicle-mounted registration system comprises a vehicle driving recording unit, a vehicle-mounted data processing unit and a vehicle-mounted data storage unit; the vehicle access recording unit, the vehicle travel recording unit, the vehicle oil mass recording unit, the vehicle charging unit and the vehicle data storage unit are respectively connected with the vehicle management and analysis unit; the vehicle driving recording unit and the vehicle-mounted data storage unit are respectively connected with the vehicle-mounted data processing unit; the vehicle recording system disclosed by the invention has the beneficial effects of conveniently counting the vehicle driving information, and detecting and prompting the power consumption and oil consumption conditions of the vehicles in time, so that users can effectively and intelligently use the vehicles.

The invention discloses a switching station integrated intelligent terminal, which comprises an auxiliary measurement and control board and main control devices, wherein the auxiliary measurement and control board is connected with multiple main control boards via a bus processing module; the bus processing module is connected with a man-machine interface module; the auxiliary measurement and control board is connected with a distribution main station; the main control devices are connected with the switching stations via the man-machine interface module; and ring connection is formed among the multiple main control devices through a bus association relation or a link line association relation among sides of the switching stations. Quick communication is carried out between multiple main control devices and among the main control devices and the auxiliary measurement and control board via photoelectric signals, fault signals are transmitted, and the problems that fault processing and control are in the main station, and long fault isolation time and long power supply recovery time can be solved.

The invention discloses an integrated switching power supply device, Including an electrical box, a Box cover, a heat sink, a display screen, a control button, a fixing hole, a terminal post, a terminal head, a power cord interface, a Hinge, a cooling fan, a Motor, a main board and an adhesive heat pad, an adhesive heat conduction pad is arranged on the inner side of the bottom of the electric box, A main board is arranged on that top of the adhesive heat conduction pad, a motor is mounted on the top of the main board, a heat dissipation fan is installed on the top of the motor, one side of the electric box is provided with the box cover through the hinge, the box cover is internally provided with a heat dissipation net, one side of the electric box is provided with a power cord interface,The display screen and a control button are mounted on one side of the electric box, a base is mounted on the bottom of the electric box, a fixing hole is correspondingly arranged in the top of the base, a terminal is mounted on the top of the base, and a terminal is mounted on the top of the terminal. The device has the functions of protection and heat dissipation, and increases the practicability of use.

The invention discloses a method for measuring complete vehicle illuminance of a locomotive through a nine-point method. Firstly the distance of a probe is measured according to the installing heightof the current complete vehicle lamps and the lamp distance, and the theoretical center position H0 required to be moved by the measurement probe is calculated; then the measurement probe moves to allthe detection points of the nine-point method with H0 acting as the center position and performs measurement recording; and finally whether the distribution of the maximum current illuminance position is the position of H0 is judged, whether the standard illumination requirements are met is directly judged according to the requirements if the judgment result is yes, and adjustment of the lamp angle is guided according to the distribution position of the current maximum point if the maximum point is not the position of H0 and the maximum point of illuminance is adjusted to the position of H0.The problems of tedious measurement method of complete vehicle illuminance and waste of manpower and material resources in the prior art can be solved.

The invention relates to the technical field of energy conservation and environmental protection, and discloses a fixed solar panel for energy conservation and environmental protection. The fixed solar panel comprises a solar panel body, a fixed column A is fixedly connected to the top face of the solar panel body, two fixed plates are attached to the bottom face of the fixed column A, connecting holes are formed in the top faces, located outside the fixed column A, of the fixed plates, the top faces of the two fixed plates are fixedly connected with connecting rods, the connecting rods are located in the fixed column A, grooves are formed in the faces, facing away from each other, of the two connecting rods, and protrusions are arranged at the positions, corresponding to the grooves in the connecting rods, of the inner wall of the fixed column A and are in a clamped state with the connecting rods. When the fixed plates are unstable and shakes along with wind power or vibration, air can be continuously input into the fixed column A, the effect of limiting shaking of the fixed plates is achieved through counter-acting force applied by air pressure generated by air accumulation, damage to bolts or the ground due to continuous shaking of the fixed plates is avoided, and the fixing service life and strength of the solar panel are improved.

The invention discloses novel industrial battery machining equipment and a use method thereof, relates to the technical field of batteries, and solves the problems that in the process of carrying outmachining on an existing industrial battery, removing defective products cannot be carried out in time caused by battery machining, the defective rate of the products is increased caused by battery machining and the like. The novel industrial battery machining equipment comprises a conveying mechanism, a main body supporting frame is fixedly installed at one end of the conveying mechanism, two packaging mechanisms are fixedly connected to the upper end face of the main body supporting frame through screws, the packaging mechanism comprises a side edge mounting seat, a height adjusting motor, afixed connecting seat, a height screw rod, a sliding block, a guide pulley seat and a shovel plate, and the guide pulley seat is fixedly mounted on one side of the side edge mounting seat. Accordingto the novel industrial battery machining equipment and the use method thereof, detecting and removing unqualified products caused in the battery machining process in time are carried out, so that thequalified rate of the products can be effectively guaranteed.

The invention discloses a combined type ultrasound wave energy converter. The energy converter comprises an outer shell; an inner shell is arranged inside the outer shell; a connecting assembly is arranged inside the inner shell; a linkage plate is arranged on one side of an installation seat; an inner core assembly is installed below the connected assembly; a sealing assembly is arranged at the bottom of the inner core assembly; an electrifying seat is arranged above the connecting assembly; an electrifying port is formed on the upper part of an electrifying pillar; and an observation port isformed in the outer side of the outer shell. According to the combined type ultrasound wave energy converter, through the arrangement of piezoelectric ceramics in a supporting assembly and a supporting ring below an electrode slice, structural strength of the supporting assembly can be conveniently enhanced; when equipment is electrified and generates high-frequency vibration, the positions of the piezoelectric ceramics and the electrode slice are maintained relatively stable; through the arrangement of the observation port, in case of malfunction of the ultrasound wave energy converter, themalfunction can be timely positioned and detected through the observation port; and the observation port can realize the effect of cooling the inside of the equipment.

The invention discloses an electromechanical device electric leakage monitoring device with an automatic power-off function. The device comprises an equipment body, a mounting box is fixed on the equipment body through a bolt, a binding post is fixed at the lower end of the mounting box, the binding post is connected with an external connecting line, and an electric leakage monitor is fixed at the lower end of the mounting box and is used for monitoring. The device further comprises an air switch fixed on the inner side of the mounting box, a movable button is arranged on the air switch, and the air switch is connected with the binding post through a connecting wire. According to the electromechanical device electric leakage monitoring device with an automatic power-off function, through cooperation of a monitoring mechanism and an automatic power-off mechanism, when electric leakage of electromechanical equipment is detected, an automatic power-off effect on the whole equipment can be achieved, so that safety accidents are avoided; and an alarm effect can be achieved through a linked automatic alarm mechanism, so that a worker is reminded of timely maintenance and detection, and normal operation of equipment is ensured.