69results about How to "Unable to solve" patented technology

The utility model relates to a truck parking battery pack, and belongs to the technical field of battery packs. Which comprises a lower shell, heating plates, end plates, a BMS protection plate, a GMS communication box, battery cells and an upper cover, and is characterized in that a plurality of battery cells are arranged, an insulating plate is arranged on each battery cell, the plurality of battery cells are sequentially connected through connecting pieces in the insulating plates to form a battery module, the heating plates are arranged on the two side surfaces of the battery module, and the end plates are arranged on the end surfaces of the battery module; a pressing strip assembly is arranged above the end plate and fixed to the pressing strip assembly through riveting screws, and the BMS protection plate and the GMS communication box are located on the pressing strip assembly. The upper cover is located above the pressing strip assembly and fixedly connected with the lower shell. And the battery cell is a lithium iron phosphate battery cell. According to the truck parking battery pack provided by the utility model, the lithium iron phosphate battery core is adopted, so that the problems of large volume and overweight of the battery pack are solved, the problem that a phosphoric acid battery cannot be used at a low temperature is solved through the heating plate when the truck parking battery pack is used, and the battery can be positioned when the truck parking battery pack is used.

The invention discloses a method for transmitting keyboard and mouse events by a remote desktop application in a Wayland environment, which comprises the following steps that: a remote desktop application server in a local computer receives mouse and keyboard events sent by a remote desktop application client in a remote computer, and sends the mouse and keyboard events to XWayland through an X11 control key and mouse protocol; keyboard and mouse events and mouse and keyboard states are transmitted between the XWayland and the Wayland synthesizer based on a Wayland extension protocol, and the mouse and keyboard events are sent to the Wayland application. The invention aims to solve the problem that the remote desktop application transmits the keyboard and mouse event to the Wayland application in the Wayland environment, and the remote desktop availability of the Wayland application is ensured.

The utility model discloses an in-ear earphone auxiliary fixing assembly, and relates to the in-ear earphone technology field, the in-ear earphone auxiliary fixing assembly comprises an earphone body, the earphone body comprises a housing, the top surface of the housing is detachably provided with an ear hanging sleeve, the bottom end of the ear hanging sleeve is fixedly provided with a fixing member, and two positioning assemblies are cooperated with the fixing member so as to fix the ear hanging sleeve. According to the earphone provided by the invention, the ear hanging sleeves are installed and fixed on the top surface of the shell, the stability of the earphone body during wearing is improved through the ear hanging sleeves, the earphone body is prevented from falling off from ears and falling to the ground when a wearer does strenuous exercises, and the earphone body is prevented from being damaged, and two limiting plates of the two positioning assemblies are separated from the top surface of the fixing piece by controlling the two positioning assemblies. The fixing piece is taken out from the positioning groove, the ear hanging sleeve can be detached, and the problems that most of auxiliary fixing assemblies of a part of existing earphones are integrally formed with the earphones, so that the auxiliary fixing assemblies cannot be replaced when damaged, and the earphones cannot be used are solved.

The utility model relates to a heat pipe type liquid heat recoverer which comprises a shell with two open ends, an inner cavity of the shell is divided into a left liquid channel and a right liquid channel through a heat insulation partition plate, a plurality of heat pipes are arranged on the heat insulation partition plate in a penetrating mode, working media used for transferring heat are arranged in the heat pipes, and the left half portions of the heat pipes are evaporation pipe sections located in the left liquid channel. And the right half part of the heat pipe is a condensation pipe section positioned in the right liquid channel. The heat exchanger has the advantages of simple structure, low cost, convenience in disassembly and assembly, high heat exchange efficiency and high reliability.

The application is suitable for the technical field of data processing, and provides a negative feedback monitoring method applied to media data, which comprises the following steps: step S1: media data collection and fusion: collecting media data and user interaction behavior data from different channels, and constructing a unified user session sequence model to time-correlate multi-modal data within a single user session; step S2: multi-modal negative feedback feature fusion: processing the media data, extracting negative feedback features of text, vision, audio and user behavior modes, and analyzing the correlation between different modal negative feedback features by using a cross-modal correlator. The application effectively avoids the problem of cross-session data fragmentation by limiting the operation range of the user session sequence model to a single continuous access period.

This application relates to the field of ecological revetment technology, and in particular to a method and system for repairing cracks in revetments. The method includes: receiving monitoring data from multiple sensors during the monitoring process to determine whether cracks have formed in artificial revetments; if it is determined from the multiple monitoring data that cracks to be repaired exist in the artificial revetment, identifying microcapsules within a preset distance from the cracks to be repaired as target microcapsules; controlling the rupture of the target microcapsules to release repair materials to repair the cracks. In summary, the method provided by this application can achieve automatic monitoring and automatic repair of cracks in artificial revetments. Therefore, this application can solve the technical problem that the monitoring and repair of cracks in artificial revetments in the prior art relies entirely on the subjective actions of technicians, which easily leads to the inability to repair cracks in artificial revetments in a timely manner.

The present application provides a data processing method and device, which relates to the field of data processing technology. In the process of full loading, the data processing device does not load all the first data to be written into the database, but updates the database by judging the order of the first moment and the second moment. In this way, it will avoid the problem of abnormal data loading of the billing subsystem caused by the conflict between the first data to be written and the first data in the database. Therefore, the normal use of user business functions can be guaranteed during the full loading process. The method includes: obtaining the first data to be written; when it is determined that the first data is stored in the database, judging whether the first moment is later than the second moment; the first moment is the generation moment of the first data to be written, the second moment is the moment when the first data is written to the database, and the first data corresponds to the first data to be written; when the first moment is later than the second moment, the first data is updated.

The application discloses a kind of multi-obstacle prediction navigation obstacle avoidance methods based on single-line laser radar, first, the obstacle point cloud data detected by single-line laser radar is collected, the data is filtered and classified, and the obstacle point cloud array is obtained;Shape fitting is carried out on the classified obstacle point cloud array to realize the detection of obstacles;Data correlation is carried out on the obstacles detected in the adjacent two frames of obstacle point cloud arrays, the current motion state of each obstacle is obtained, and its historical trajectory is recorded to realize the tracking of obstacles;The trajectories of multiple obstacles in the future are predicted, the results of global path planner are read and segmented into multiple local paths;In each local path, map-free end-to-end strategy navigation is realized;The method of the application is applied to floor cleaning robots, service robots and AGVs and other mobile robots, improves the safety of robot obstacle avoidance, and has the characteristics of real-time and low cost.

The utility model discloses a glue gun heating device which comprises a heating device, a support frame and a positioning mechanism, the heating device is fixed on the support frame, and the positioning mechanism is arranged on one side of the support frame; the heating device comprises a heating sleeve and a heating gun nozzle sheath, the heating sleeve and the heating gun nozzle sheath are fixedly installed on a base plate at the top end of the supporting frame, and the heating gun nozzle sheath is fixed below the heating sleeve; the positioning mechanism comprises a positioning block and a connecting pipe, the positioning block is fixed at the top end of the connecting pipe through a first positioning plate, and the bottom end of the connecting pipe is fixed on the supporting bottom plate through a second positioning plate. The temperature of the heating device is controlled and adjusted through the temperature control system, the positioning mechanism for positioning the glue gun is arranged, the glue gun can be accurately placed on the positioning mechanism, and an operator can conveniently operate the glue gun in the using process.

The present invention provides a plug-in loading control method, system, terminal device and storage medium, which monitors whether a plug-in installation conflict event occurs in a terminal system; if so, obtains resource information of a conflicting first plug-in and a second plug-in; wherein the first plug-in information is a plug-in to be loaded and inserted into the system, and the second plug-in is a plug-in that has been loaded and inserted into the system; controls the removal of the resource information of the second plug-in, and loads the first plug-in until loading is completed. In this embodiment, when loading a plug-in, if a conflict occurs between the currently loaded plug-in and the previously loaded plug-in, the previously loaded plug-in is controlled to be removed, and then the plug-in that needs to be loaded is loaded, thereby avoiding the problem of failure of the current plug-in installation, and also solving the problem of multiple plug-in conflicts causing application crashes or resource confusion, causing the device to be unable to be used normally.

The application discloses a needle-tooth shell assembly and a speed reducer, and solves the problem of high difficulty in needle selection and the problem of speed reducer failure caused by needle-tooth groove wear in the prior art. The needle-tooth shell assembly comprises a needle-tooth shell and a needle-tooth sleeve. The needle-tooth sleeve is arranged to be movable on the needle-tooth shell, so that the position of the needle-tooth groove on the needle-tooth sleeve for cooperating with the needle can be adjusted, and the diameter of the needle-tooth shell is adjusted, so that the needle-tooth groove can be adapted according to the selection of the needle, the problem that the needle engagement top gap is too different from the theory due to the error in the diameter screening of the needle in the prior art is solved, the purpose of weakening the adverse effect of the large diameter fluctuation of the needle on the service life of the speed reducer is achieved, the assembly precision of the speed reducer and the service life of the speed reducer are improved, the purpose of reducing the idle stroke of the speed reducer and the attenuation rate of the stiffness curve is achieved, and the service life of the speed reducer is improved.

The invention belongs to the technical field of mining machinery, and relates to an external oil supplementing type shovel plate for a continuous mining machine and a using method of the external oil supplementing type shovel plate. Comprising a shovel plate body, the transmission system is arranged in the shovel plate body; the transmission system comprises a motor and a speed reducer; the speed reducer comprises a high-speed section and a low-speed section connected with the high-speed section; the output end of the motor is connected with the input end of the high-speed section; a high-speed section upper oil port and a high-speed section lower oil port are formed in the shell of the high-speed section; a low-speed section upper oil port and a low-speed section lower oil port are formed in the shell of the low-speed section; a star wheel is arranged on the upper surface of the shovel plate body and is connected with the output end of the low-speed section; the oil supplementing device is arranged outside the shovel plate body, and a high-speed section upper oil level opening, a high-speed section lower oil level opening, a low-speed section upper oil level opening and a low-speed section lower oil level opening are formed in the oil supplementing device; and an oil level gauge is arranged on the side wall of the oil device. The oil supplementing pipeline of the speed reducer is directly led out to the oil supplementing device outside the shovel plate, and convenient oil supplementing operation is achieved.

The utility model relates to the technical field of collector box bodies, and discloses a multi-channel collector box body which comprises a supporting rod, the top of the supporting rod is fixedly connected with a rectangular box, the interior of the rectangular box is fixedly connected with a mounting plate, the interior of the mounting plate is provided with a net opening, and the interior of the back face of the rectangular box is provided with a mounting hole; the sealing mechanism is arranged on the front surface of the mounting plate; wherein the sealing mechanism comprises a driving motor. By arranging the driving motor, the rotating rod, the circular shaft and the baffle plate, when the driving motor runs, the rotating shaft drives the rotating rod to rotate, so that the rotating rod extrudes and pushes the circular shaft to move leftwards, the baffle plate moves leftwards to seal the net opening, and the purpose of automatically sealing the net opening is achieved; the problem that the net opening cannot be normally used due to the influence of moisture is solved, and the protection performance of the device is improved.

The utility model provides a flexible protection structure for a power line, which relates to the technical field of flexible protection structures for power lines, and comprises a power line, a rubber sheet is fixedly connected to the surface of the power line, a protection device is arranged on the surface of the power line, and a plug and a bolt are fixedly connected to the two ends of the power line respectively. A storage device is arranged on the surface of the power line, the protection device comprises a protection frame arranged on the surface of the power line in a sleeving mode, the protection frame is made of a deformable silica gel material, a rectangular plate is fixedly connected to the side face of the protection frame, a through groove is formed in the surface of the rectangular plate, and a bolt is inserted into the through groove; the side face of the rectangular plate is fixedly connected with a nut, the bolt is in threaded connection with the nut, the surface of the rectangular plate is fixedly connected with a base plate, the base plate is a rubber plate, and the problem that the power line cannot be used due to the fact that rubber on the surface of the power line is easily bitten by pets is solved.

The invention discloses a customer group data processing method and device, electronic equipment and a storage medium, and relates to the technical field of big data or other related fields, and the method comprises the steps: obtaining transaction data of N financial customers from a financial database, and constructing a financial customer group network according to the transaction data, N being a positive integer; based on a preset threshold value formula and a spectral clustering algorithm, the financial customer group network is classified, the financial customer group network is disassembled according to a classification result, M sub-graphs are obtained, and M is a positive integer; solving a maximum independent subset for each sub-graph by adopting a quantum computing optimization strategy, and determining customer associated information corresponding to the maximum independent subset; and updating the current customer group information in the financial database by using the customer association information corresponding to all the sub-graphs. Through the method and the device, the technical problem that customer group information cannot be updated in time due to low processing efficiency of financial customer relationship data in related technologies is solved.

The utility model discloses a hidden positioning structure of a European standard socket, a positioning end of the socket is provided with a rear cover, a locking piece passes through the rear cover and locks the rear cover on the socket, and a conductive terminal and a ground wire terminal which are arranged on the positioning end are pressed and fixed on the socket and the rear cover at the same time. According to the utility model, the rear cover is arranged at the positioning end of the socket body, and the positioning structure and the avoiding structure which are matched with the conductive terminal, the ground wire terminal and the locking piece are arranged at the rear cover and the positioning end, so that each functional piece can be fixed from the positioning end and can be ensured to be normally used, and the locking piece cannot be seen from the input end; therefore, a user can be prevented from disassembling the locking piece on the socket, and the problem that the socket cannot be used due to disassembling operation of the user is solved.

The utility model provides a stable type barrier gate, and relates to the technical field of stable type barrier gates, the stable type barrier gate comprises a barrier gate, the side surface of the barrier gate is rotatably connected with a handrail, the side surface of the handrail is provided with a folding device, the upper top of the folding device is provided with a convenient-to-replace device, the surface of the barrier gate is fixedly connected with a camera, and the camera is fixedly connected with the barrier gate. The folding device comprises a folding rod rotationally connected to the side face of the handrail, an elastic rope is fixedly connected to the surface of the folding rod, the other end of the elastic rope is fixedly connected to the side face of the handrail, a rectangular groove is formed in the side face of the handrail, a magnetic block is fixedly connected to the side face of the folding rod, and the magnetic block is inserted into the rectangular groove. The bottom of the handrail is fixedly connected with a clamping block, a circular groove is formed in the surface of the clamping block, a first spring is arranged in the circular groove, the other end of the first spring is fixedly connected with a clamping ball, and the problem that after the handrail of the barrier gate is broken by collision, the barrier gate cannot be normally used is solved.

The utility model discloses a vacuum pump air filter assembly facilitating drainage, and relates to the technical field of vacuum pumps. The device comprises a filter cartridge, a floating ball type mechanical drainer, a liquid collection bottle, a conical hopper and a liquid collection tank, a stainless steel baffle plate which is obliquely distributed is fixed on the inner wall of the filter cartridge, a filter element is arranged in the filter cartridge, and a bent liquid discharge pipe is fixed at the lower part of the peripheral side of the filter cartridge in a penetrating manner; a floating ball type mechanical drainer is fixed to the bottom end of the liquid discharging pipe in a threaded and screwed mode, and a liquid collecting bottle is fixed to the bottom end of the floating ball type mechanical drainer in a screwed mode; a conical hopper is also arranged outside the filter cartridge, and a liquid collecting tank is screwed and fixed at the bottom of the conical hopper. Through the arrangement of the filter cartridge, the floating ball type mechanical drainer, the filter element, the stainless steel baffle plate, the conical hopper, the liquid collection bottle and the liquid collection tank, the problems that moisture in air filtration cannot be timely and conveniently discharged, the filtration effect of vacuum pump air filtration is insufficient, and dust and moisture in air in a container cannot be fully filtered out are solved.

The utility model discloses a water replenishing mechanism for hydrogen production equipment, which comprises the hydrogen production equipment and a water storage device, and a filtering and disinfecting box is arranged between the hydrogen production equipment and the water storage device; the filtering and disinfecting box comprises a box body, the upper layer of the box body is a disinfecting chamber, the lower layer of the box body is a filtering chamber, and the filtering chamber is communicated with the disinfecting chamber through a connecting elbow; a double-floating-ball liquid level switch used for detecting high and low water levels in the hydrogen production equipment is arranged in the hydrogen production equipment; the filtering and disinfecting box with the filtering chamber and the disinfecting chamber is arranged for treating water, the quality of water entering the hydrogen production equipment is improved, the high requirement of the hydrogen production equipment for the water quality is met, meanwhile, the double-floating-ball liquid level switch is arranged for detecting the high water level and the low water level in the hydrogen production equipment, and the water quality is improved. Whether water needs to be supplemented is judged according to the internal water level state of the hydrogen production equipment, and the problem that the water level cannot be detected in time in the sealing operation process of the hydrogen production equipment is solved.

The present application relates to the field of vehicle control, and in particular to a method and device for controlling a rear windshield wiper of a vehicle. The method provided by the present application detects the washing state of a first windshield wiper of a front windshield, and controls a second windshield wiper of a rear windshield to perform a cleaning operation in linkage with the first windshield wiper according to real-time working parameters when the first windshield wiper is in the washing state, thereby solving the problem that the rear windshield wiper cannot be actively washed in linkage with the front windshield wiper. Since the front and rear windshield wipers are started synchronously, the rear windshield can remove stains while the front windshield is being cleaned, and there is no need to start the rear windshield wiper temporarily when the rear field of view is needed, thereby avoiding a delay in the field of view and greatly improving the driving safety in scenarios such as lane changing and reversing. Meanwhile, the linkage mechanism makes the rear windshield wiper and the washing system work synchronously every time the front windshield wiper is actively washed, thereby avoiding problems such as liquid accumulation in the pipeline, aging of the sealing element, and motor jamming caused by long-term idling, and effectively delaying the aging and damage of the components.

The present invention relates to the technical field of lifting equipment, and specifically to an automatically locking multifunctional lifting equipment, comprising a base plate, an automatic adjusting component is installed on the top of the base plate, a manual adjusting component is installed on the top side of the base plate close to the automatic adjusting component, a supporting component is installed on the automatic adjusting component, a height adjusting component is installed on the supporting component, a replacement component is installed on the height adjusting component, and a self-locking hook component is installed on the height adjusting component through the replacement component; by utilizing the mutual cooperation between the various structures in the above-mentioned components, the device is used by plugging a plug-in frame into a first fixed frame to achieve the benefit of rapid assembly, and the problem of the existing device needing to repeatedly use bolts to install and splice the device during the preparation process before use is solved, which is very time-consuming to operate, resulting in a long preparation time in the early stage, thereby reducing work efficiency.

The invention relates to the technical field of power control, in particular to an expansion screen power control method and system based on power supply equipment adaptation. The maximum power of a screen and the maximum power of a loudspeaker are calculated by detecting the maximum output power of power supply equipment, the maximum brightness is determined based on the maximum power of the screen, and the maximum volume is determined based on the maximum power of the loudspeaker; the expansion screen detects target brightness and target volume input by the user; when the target brightness is larger than the maximum brightness, the expansion screen detects the main control power and the loudspeaker power in the running state in real time, the actual maximum brightness is determined, and the brightness of the screen is adjusted to the actual maximum brightness; when the target volume is larger than the maximum volume, the expansion screen detects the main control power and the screen power in the running state in real time, the actual maximum volume is determined, and the volume of the loudspeaker is adjusted to the actual maximum volume; power control over the expansion screen is achieved, the situation that the expansion screen cannot be used due to too high power is avoided, and meanwhile energy consumption is reduced.

The utility model belongs to the technical field of spraying devices, and particularly relates to a wall paint spraying device capable of preventing paint solidification, which comprises a barrel body, a cover is slidably connected to the upper end of the inner side of the barrel body, a motor is fixedly connected to the upper end of the cover, and the output end of the motor is rotatably connected with the cover. The output end of the motor is fixedly connected with a rotating shaft, the outer side of the rotating shaft is fixedly connected with a mounting block, and the interior of the mounting block is connected with a threaded rod through a bearing. Through the arrangement of the rotating shaft, the threaded rod, the connecting rods and other parts, the threaded rod can be rotated to drive the connecting rods on the limiting sleeves to move, so that the two connecting rods deform, the motor can drive the connecting rods to disperse and stir a coating, and the coating is effectively prevented from being solidified; the problem that when the wall paint spraying device is used, paint is prone to solidification, so that the paint is blocked and cannot be used is solved.

The invention provides a method for characterizing the specific surface area of cobaltosic oxide, belongs to the technical field of lithium ion battery material preparation, and solves the problems that an existing method for characterizing the specific surface area of cobaltosic oxide is long in detection time and cannot meet the requirement that the specific surface area of a product needs to be monitored at any time in the process of preparing cobaltosic oxide through calcination. Spherical cobalt carbonate is used as a raw material to be calcined into cobaltosic oxide, then sampling is carried out, and the positive linear relation between the specific surface area of the cobaltosic oxide and the moisture content is set. The time for representing the specific surface area of the cobaltosic oxide is greatly shortened, the method can be used for monitoring abnormal conditions in the process of preparing the cobaltosic oxide by calcining cobalt carbonate, the process abnormity can be found in time, and the product quality is guaranteed.

The present application relates to a power-drawing device, method, control device and computer-readable storage medium. In the power-drawing device, the positive output end of the first current transformer and the positive output end of the second current transformer are both connected to the positive input end of the intelligent gateway, and the negative output ends are both connected to the negative input end of the intelligent gateway; the first current sensor and the second current sensor respectively detect the first current value output by the first current transformer and the second current value output by the second current transformer in turn; the voltage sensor detects the current voltage value of the intelligent gateway; the control device obtains the current voltage value, and controls the driving device to adjust the magnetic flux of the first current transformer when the current voltage value is not equal to the preset voltage value; the first current value and the second current value are also obtained, and the driving device is controlled to adjust the magnetic flux of the second current transformer according to the first current value and the second current value, which solves the problem that the current of the wire is too small to meet the power demand of the high-power intelligent gateway device when high-voltage power is drawn.

The utility model relates to the technical field of fabricated buildings, and discloses a stair railing embedded part for a fabricated building, which comprises a connecting plate, and the top of the connecting plate is fixedly connected with a connecting block. According to the utility model, after the installation position of the embedded part is determined by observing the reference hole, enabling the connecting plate to correspond to the mark of the embedded position, and pouring the concrete, the concrete is tightly combined with the embedded rod, and through the arrangement of the embedded rod, the defect that the position of the embedded part is deviated due to punching installation is overcome, and the accuracy of the installation position of the embedded part is improved; the threaded rod is aligned with the threaded groove, then the handrail body is rotated to move in the axis direction of the threaded groove, the handrail body is gradually tightened along with rotation, connection of the handrail body and the embedded part is completed, the defect that the handrail cannot be separated from the embedded part due to welding is overcome, and the handrail can be replaced and adjusted while the handrail is replaced and adjusted. And the stability of connection between the handrail and the embedded part is guaranteed.

The utility model provides a composite structure of a high-temperature-resistant and wear-resistant silicon carbide refractory material and a metal blind tube, the metal blind tube is of a structure with a spherical seal head at the lower end, and a cold air heat exchange tube is fixed in the metal blind tube; a gap is formed between a lower end connector of the cold air heat exchange pipe and the spherical end socket and used for effectively squeezing out hot air. Silicon carbide refractory bricks are annularly suspended on the outer wall surface of the metal blind pipe; silicon carbide self-flowing castable is filled between the silicon carbide refractory bricks and the outer wall surface of the blind pipe; and the silicon carbide refractory brick, the silicon carbide self-flowing castable and the metal blind pipe jointly form a high-temperature-resistant and wear-resistant composite structure. The service life of the metal blind pipe at high temperature is prolonged; maintenance workload is small, assembly and maintenance are convenient and fast, and remarkable economic benefits are achieved.

This ultra-high temperature single-screw compressor bearing independent lubrication system includes an oil inlet pipe, an oil inlet passage, a mechanical seal, a bearing housing, a cover plate, an oil return pipe, and an oil cooler. The oil cooler is located outside the single-screw compressor housing. The mechanical seal is located inside the bearing housing of the single-screw compressor housing, isolating the compression chamber inside the single-screw compressor housing from the bearing cavity inside the bearing housing. The cover plate is located outside the bearing housing, sealing the bearing cavity from the outside. The bearing cavity houses the bearing. The oil inlet pipe is located outside the bearing housing, with one end connected to the oil outlet of the oil cooler and the other end connected to the oil inlet of the oil inlet passage. The oil outlet of the oil inlet passage is connected to the oil inlet on the bearing housing. One end of the oil return pipe is connected to the inside of the bearing housing, and the other end is connected to the oil inlet of the oil cooler. This system effectively controls the bearing lubricating oil temperature, and the operating conditions during use fully meet the normal operating conditions of the bearing, extending the bearing life.

The utility model discloses an optical liquid level meter, an optical liquid level detection device and a household appliance. The optical liquid level meter comprises a measuring device, a fixing device and a movable baffle. The measuring device comprises a light source sealing assembly used for sealing the light source array and a detector sealing assembly used for sealing the detector array. The detector array is used for receiving the preset optical signal emitted by the light source array and converting the preset optical signal into an electric signal; the fixing device is used for fixing the light source sealing assembly and the detector sealing assembly; the movable baffle is arranged between the light source sealing assembly and the detector sealing assembly in a sleeving manner, and at least part of the movable baffle shields a light path between the light source array and the detector array; when the fixing device is arranged on the liquid level to be measured, the movable baffle floats up and down along with the liquid level to be measured. The light source and the detector are sealed, liquid level detection is achieved in combination with the movable baffle, the detector is prevented from making direct contact with detected liquid, and the liquid level detector can be compatible with more liquid level detection scenes.