1818results about "Level indicators by floats" patented technology

The invention discloses a magnetostriction liquid level meter temperature compensation method and system based on a support vector machine. The method comprises the steps that the currently captured original pulse number is obtained through a magnetostriction liquid level meter; the current environment temperature is detected in real time through a high-precision temperature sensor in the magnetostrictive liquid level meter; taking the original pulse number and the current environment temperature as input features, sending the input features to a pre-trained support vector machine regression model (SVM), and outputting a displacement error prediction value in the current temperature environment; and correcting the original measurement result according to the error prediction value to obtain a real pulse measurement value after temperature compensation. The system comprises a time-to-digital conversion chip, a temperature chip temperature measurement module, a support vector machine reasoning module, a pulse compensation module and a distance calculation module. According to the method, nonlinear modeling can be carried out on measurement errors caused by environment temperature changes, so that the liquid level measurement result is dynamically corrected, and the overall robustness and precision of a measurement system are improved.

The invention relates to the technical field of water level monitoring of water conservancy, and discloses water level monitoring equipment for surveying and mapping of water conservancy, which comprises a vertical rod, a control box, a solar panel, a camera and a mounting frame are detachably mounted on the vertical rod, and an equipment box is arranged at the top of the mounting frame. During use, the water level can be monitored in real time through cooperation of the water level sensor and the floater, after long-time use, the lifting frame is driven by the lifting mechanism to move downwards, and the inner wall of the measuring cylinder is cleaned through the inner wall cleaning mechanism in the downward movement process of the lifting frame; and when the lifting frame descends to a set position, the balance hole can be dredged through the hole cleaning mechanism, and when the lifting frame moves downwards to the bottom end of the measuring cylinder, the foreign matter is discharged through the action of water flow, so that the foreign matter is prevented from being left in the measuring cylinder.

The invention provides a hydraulic engineering water level monitoring method and system based on artificial intelligence. Meteorological parameters and soil humidity parameters of a cross-basin reservoir group and water level measurement parameters generated by magnetic levitation displacement induction are obtained, dynamic change rules of the parameters are analyzed, and a correlation strength coefficient reflecting the hydraulic interaction between reservoirs is calculated. And the coefficient and a water level measurement parameter are jointly coded, and a cross-reservoir dynamic association map is constructed. And synchronously acquiring real-time water level signals of each reservoir, matching the real-time water level signals with a preset fluctuation feature library, and identifying a water level abnormal interval related to the water flow path node. And in combination with a mapping relationship between the dynamic association map and the abnormal fluctuation interval, determining a water level imbalance risk level, and generating regulation and control instructions including flood discharge path optimization and water storage capacity adjustment according to the water level imbalance risk level. According to the technical scheme, the water level monitoring efficiency and accuracy of the water conservancy project can be improved.

The utility model discloses an underground water level monitor for geotechnical engineering, which relates to the technical field of water level monitoring and comprises a probe rod body and a protective sleeve sleeved outside the probe rod body, and the top end of the probe rod body is provided with a traction rope penetrating out of an annular seat at the top of the protective sleeve; an overturning frame is rotationally installed on the side face of the bottom of the protective sleeve, a floating plate and a plugging frame are arranged at the two ends of the overturning frame respectively, and the plugging frame is arranged at the end, close to the protective sleeve, of the overturning frame; a floating plate is arranged at the upper part of the floating plate; by means of the torque change design of the floating plate, the overturning frame and the plugging frame, when the floating plate does not enter water, the plugging plate covers the open groove in the lower end of the protective sleeve, and rock soil and other sundries can be prevented from entering the protective sleeve to affect the probe rod; when the floating plate enters water, the blocking plate is moved away, so that the probe rod can be in contact with the water body in time to monitor the water level.

The invention relates to the technical field of storage tank liquid level meters, in particular to a liquid storage tank liquid level meter which comprises a magnetic turning plate liquid level meter used in cooperation with a tank body, the bottom of the tank body is fixedly connected with a water outlet, the top of the tank body is fixedly connected with a water inlet, the outer side of the tank body is further fixedly connected with two sets of butt-joint pipe openings, and the magnetic turning plate liquid level meter is fixedly connected to the butt-joint pipe openings. The arc-shaped baffle is fixedly connected to the bottom of the tank body, the two communicating pipes are fixedly connected to the magnetic turning plate liquid level meter, the filtering assemblies are rotationally connected to the communicating pipes, the two driving assemblies are fixedly connected to the upper end and the lower end of the tank body, the dredging assemblies are fixedly connected to the driving assemblies, and the removing assemblies are fixedly connected to the dredging assemblies. By arranging the dredging assembly and the driving assembly, power generated when liquid enters or is discharged out of the tank body can be used for sweeping the filter cartridge, and swept solid particles are pushed to the middle position of the tank body, so that the solid particles are prevented from being accumulated at the filter cartridge, and the metering accuracy is prevented from being influenced.

A weighing system for medical applications may include a basin that has a base and a sloped sidewall that collectively form a bounded cavity with open top surface that receives and holds the material to be weighed. The basin may be free floating above the weighing device within a restricted range of travel. In some examples, the weighing system includes a thermal treatment device to adjust the temperature of the material in the basin. The rate at which heat is delivered to the basin may vary depending on the weight of the contents in the basin.

The utility model discloses sewage liquid level detection equipment in a sewage pipeline well, which relates to the technical field of liquid level detection equipment, and comprises a net cylinder and a floating body mechanism, the inner bottom wall of the net cylinder is fixedly connected with a connecting rod, the top of the connecting rod is fixedly connected with a cylinder cover, the floating body mechanism penetrates through the cylinder cover, and a force storage rebound mechanism and a cleaning mechanism are arranged in the net cylinder. The cleaning mechanism comprises a mounting plate, and a plurality of knocking rods and water stirring plates are fixedly connected to the side, close to the inner wall of the net barrel, of the mounting plate. The device has the beneficial effects that a power mechanism drives a rotating mechanism, the rotating mechanism drives a sleeve to do circular motion, a movable rod continuously extrudes a pressure bearing assembly, the movable rod is rapidly released after force is stored, the movable rod drives a mounting plate to rapidly move towards the inner wall of a net cylinder, a knocking rod knocks the net cylinder, and the net cylinder vibrates; and the water stirring plate stirs sewage in the mesh cylinder, so that the sewage rushes out of the mesh cylinder, and impurities such as plastic films attached to the mesh cylinder are impacted, so that the impurities can be effectively scraped off by the scraper.

A no emission tank gauge has a housing having a valve connection extending from a bottom side of the housing, a gauge line within the housing, the gauge line having a plumb bob attached at a free end, a pulley attached within the housing and supporting the gauge line, the pulley configured to allow extension and retraction of the gauge line, and an actuator connected to the pulley and extending exterior to the housing and configured to actuate the extension and retraction of the gauge line via rotation of the pulley. The housing has a window in a wall of the housing facing a marked side of the gauge line. The valve connection has an opening sized to allow for passage of the plumb bob and the gauge line. The housing is sealed when the valve connection is connected to a valve to prevent escape of fluid.

A charging and refuelling station for an autonomous cleaning robot including; a charging mechanism including a sprung mount resiliently supported on the charging and refuelling station, a swivel mount pivotally supported on the sprung mount, the swivel mount supporting contact plates for contacting charging contact plates of the autonomous cleaning robot when docked at the station; and a water exchange system including a tap for fresh water refilling of the autonomous cleaning robot, and a draining system including a drain tank for receiving water draining from the autonomous cleaning robot.

The invention relates to the field of liquid level detection devices, in particular to a liquid level detector which is structurally characterized in that a floater comprises a movable plate, side plates are arranged on the two sides of the movable plate, the side plates extend inwards to be provided with first sliding rods and second sliding rods, and the side plates are matched with side edge sliding grooves of positioning rods through the first sliding rods and the second sliding rods; according to the device, the probe emits laser and receives and processes electric signals generated by a reflected light source, the first sliding rod and the second sliding rod of the floating device are embedded into the side sliding groove, the diameter of the first sliding rod is smaller than that of the second sliding rod, the first sliding rod and the second sliding rod are prevented from being clamped in the side sliding groove, the first sliding rod and the second sliding rod are of a cylindrical structure, and the detection accuracy is improved. The vertical displacement smoothness can be improved, the plate body is rotationally connected with the movable shaft, precision reduction caused by too large shaking of the plate body due to too large gaps can be avoided, meanwhile, the protruding detection table is arranged at the top of the plate body and used for the emission surface of a laser point, and drainage holes are formed in the periphery of the detection table.

The invention discloses a single-ultrasonic-head sensor for measuring liquid density and liquid level height, which relates to the technical field of liquid level measurement and comprises a floater component, a reflection cavity component and an ultrasonic sensor component. The floater assembly is assembled on the reflection cavity assembly, the reflection cavity assembly is connected with the ultrasonic sensor assembly, and the ultrasonic sensor assembly is connected with the floater assembly through the reflection cavity assembly. High-frequency ultrasonic waves are transmitted and received through a single point, the sound velocity (density) and the ultrasonic wave return time difference (liquid level) are synchronously analyzed, the density and the liquid level of the urea solution are calculated, the problems of mechanical interference and data splitting are avoided, and the trepanning and cable cost is reduced; the shared high-precision temperature compensation module directly eliminates compensation deviation of the split system, and maintenance only needs single-point anti-crystallization treatment; and in combination with a cross validation algorithm (density liquid level logic mutual verification), the operation and maintenance cost is reduced while the data reliability is improved, and the method is particularly suitable for space-limited and highly-corrosive urea solution detection scenes.

The utility model provides a water level monitoring device, which relates to the technical field of water level monitoring devices for environmental monitoring, and comprises a monitoring mechanism, the monitoring mechanism comprises a base, a first measuring rod is sleeved in the base, the first measuring rod is in sliding connection with the base, one end of the first measuring rod is fixedly connected with a connecting rod, and the other end of the first measuring rod is fixedly connected with a second measuring rod. The outer surface of the connecting rod is sleeved with a second measuring rod. According to the water level monitoring device, through the arrangement of the monitoring mechanism, the task of daily river water level monitoring can be completed, the river water level can be measured in real time when the river water level surges, the measuring range of the water level monitoring device is greatly widened due to the fact that the second measuring rod can conduct floating measurement, and then emergency situations can be coped at any time; meanwhile, the measuring rod II is sleeved on the connecting rod, so that the total length of the whole water level monitoring device is not increased due to the arrangement of the measuring rod II.

The invention relates to the technical field of oil level gauges, and discloses a pointer type oil level gauge for monitoring the oil level of a transformer oil conservator, which comprises an oil level gauge assembly and a control module, the control module is electrically connected with the oil level gauge assembly, and the control module is used for controlling the oil level gauge assembly; the oil level gauge assembly comprises a dial plate, a fixing flange, two limiting rods, an angle sensor, a limiting block, a rotating rod and a floater, the dial plate is fixedly connected to the upper end of the fixing flange, the angle sensor is electrically connected into the dial plate, the limiting rods are fixedly connected to the lower end of the fixing flange, and the limiting block is fixedly connected to the end, away from the fixing flange, of each limiting rod. A rotating rod is arranged between the two limiting rods, the two ends of the rotating rod are rotationally connected with the dial plate and the limiting block respectively, threads are axially arranged on the surface of the rotating rod, the rotating rod is sleeved with the floater, and the two sides of the floater are slidably connected with the two limiting rods. Deformation or fatigue damage caused by long-term stress is reduced.

A biochar production system includes a reactor body, a central rod disposed within the reactor body, a leveling arm extending from the central rod and configured to rotate about the central rod, and a bed level sensor system. The bed level sensor system includes a float configured to move from a resting position on a biomass in the reactor to an ending position upon contact with the leveling arm, and a level sensor coupled to the float via a connector. The level sensor is configured to correspondingly move with the float. A controller is configured to detect bed levels of the biomass within the reactor body, and determine a plurality of sample readings based on the detected bed levels.

The utility model discloses a fire-fighting natural water source intake water level monitor, which relates to the technical field of water level monitoring and comprises a tripod device and an aluminum alloy box staff, a telescopic pull box is fixedly mounted at the top end of the aluminum alloy box staff, and a steel wire rope is fixedly connected between the telescopic pull box and a support plate. The steel wire rope is movably sleeved with a noctilucent floating ball; both the tripod device and the aluminum alloy box staff can be adjusted within a certain range according to the liquid level height of a natural water area, the liquid level height information can be conveniently collected through the arranged noctilucent floating ball, the liquid level height information can be conveniently used at night through the arranged spotlight, and the tripod device can be folded and is convenient to carry. The portability is further improved through the arranged straps, a water source can be found conveniently, whether the selected water source meets the water taking condition or not can be reported to a commander, and in addition, barbs are additionally arranged on the side face of a fixing base of the tripod device and can be inserted into sludge to improve the stability of the tripod device.

The present invention discloses a dynamic water level measuring device, which relates to the technical field of flow measurement equipment. The main purpose is to provide a dynamic water level measuring device that can improve the measurement accuracy. The main technical solution of the present invention is as follows: A dynamic water level measuring device includes: a cylinder body rotatably connected to a support beam; a measuring component, which includes a rod body, a floating ball and a connecting component. The rod body is longitudinally arranged inside the cylinder body, and there is a first cavity between the cylinder body and the rod body. The floating ball is slidably arranged on the rod body. The connecting component is arranged at the lower part of the cylinder body, and both ends of the connecting component have water inlets, and the water inlets are interconnected with the first cavity; a driving component rotatably connected to the cylinder body. The present invention is mainly used for measuring the dynamic water level.

The invention relates to the technical field of water level detection devices, and discloses a saturated sand layer field anti-floating water level detection device and a using method thereof.The saturated sand layer field anti-floating water level detection device comprises a floating rod, a flange plate and a gauge outfit, a limiting block is arranged at the lower end of the floating rod, a cleaning assembly is movably assembled on the surface of the floating rod, the periphery of the floating rod is sleeved with a floater, the cleaning assembly is located above the floater, and a transmission bin is formed in the floating rod; the cleaning assembly comprises a first magnet arranged in the transmission bin and a movable sleeve arranged on the periphery of the floating rod in a sleeving mode, a second magnet magnetically connected with the first magnet is fixed in the movable sleeve, and an infrared sensor for detecting the position of the floater is installed on the lower surface of the flange plate. The cleaning assembly, the floater locking structure and the infrared sensor are integrated, impurities on the surface of the floating rod can be automatically removed, clamping stagnation of the floater is avoided, and manual maintenance is reduced; when the liquid level fluctuates, the floater is locked to prevent data distortion and damage; the infrared sensor provides a basis, and the complex environment adaptability of the saturated sand layer field area is improved.

The utility model relates to a liquid level detection device of a coke oven flue inspection well, which is characterized in that the top end of a stand column is vertically and fixedly connected with a top concrete foundation layer, the bottom end of the stand column is vertically and fixedly connected with a bottom concrete foundation layer, and liquid level switches comprise a liquid level switch I, a liquid level switch II and a liquid level switch IV; the stand column is sequentially provided with a first liquid level switch, a second liquid level switch, a third liquid level switch and a fourth liquid level switch from top to bottom, the first liquid level switch is used for detecting the ultrahigh liquid level of the inspection well, the second liquid level switch is used for detecting the high liquid level of the inspection well, the third liquid level switch is used for detecting the low liquid level of the inspection well, and the fourth liquid level switch is used for detecting the ultralow liquid level of the inspection well. The drainage pump is connected with a drainage pipe. The pull rod type liquid level switch has the advantages that the pull rod type liquid level switch is fixed to the metal stand column through the metal fixing ring, and the problems that a flexible wire is aged and longitudinally deformed after being stretched for a long time and the liquid level switch moves when floating or drooping are solved; the included angle between the adjacent liquid level switches is alpha, so that the problem of physical collision of the adjacent liquid level switches in the vertical direction is prevented.

The utility model relates to the field of detection devices, in particular to a magnetostriction liquid level meter detection device which comprises a fixing plate, a detection assembly and a supporting assembly. A supporting assembly used for supporting and damping to prevent the magnetostriction liquid level meter from being damaged is installed on the outer side of the fixing plate, and a detection assembly used for detecting liquid is installed in the fixing plate. The supporting assembly comprises a mounting base, a fixing block, a connecting block, a telescopic column, a damping spring, an electric push rod, a supporting plate, a suction cup, a flange, an electric cabinet, a mounting cavity, a threaded sleeve, a fixing nut, a quick connector, a connecting column and a damping pad, the mounting base used for supporting the magnetostriction liquid level meter is arranged at the center of the upper end of the fixing plate, and the flange is arranged at the center of the upper end of the mounting base; according to the magnetostriction liquid level meter detection device, displacement caused by external vibration or impact is prevented through the damping structure, the magnetostriction liquid level meter detection device can be kept horizontal all the time through the electric push rod, and the device can be installed and detached more rapidly through various rapid installation structures.

The utility model discloses a transformer insulating oil monitoring device, which belongs to the field of transformers, and comprises a transformer body, an oil supply tank fixedly arranged on the transformer body and communicated with the interior of the transformer body, and a monitoring structure arranged on the oil supply tank, the monitoring structure comprises a connecting pipe fixedly arranged at the bottom of one end of the oil supply tank and communicated with the interior of the oil supply tank, a piston arranged in the connecting pipe, a guide rod inserted into the oil supply tank and connected with the piston, and a vent hole formed in the top end of the connecting pipe. And an alarm mechanism is arranged on the connecting pipe. The piston and the guide rod are directly driven to move through the change of the liquid level of the insulating oil, the state of the insulating oil is monitored in real time, the monitoring timeliness and accuracy are improved, the structure is relatively simple, and manufacturing and maintenance are easy. Through the design of the alarm mechanism, intelligent monitoring of the liquid level of the insulating oil is realized, an alarm can be automatically given when the insulating oil is reduced to a rated value, and the timeliness and the accuracy of monitoring are improved.

The invention relates to the technical field of accumulated water level measurement, in particular to a sunken road accumulated water monitoring device which comprises a base and a plurality of fixing cones fixed to the bottom of the base and further comprises a plurality of vertical arms fixed to the base, a top plate is fixed to the ends, away from the base, of the vertical arms, and a display panel is fixed to the side of the top plate. A triangular display area is arranged in the display panel; the shielding mechanism is connected with the display panel and can move relative to the display panel; the floating balls are arranged on the side of the base and connected with the follow-up mechanism installed on the base, the follow-up mechanism is connected with the shielding mechanism, and the follow-up mechanism is triggered when the floating balls ascend; when the floating ball is located at different heights, the display areas correspond to different display conditions, display and reflection of the water level condition are comprehensive, in the monitoring process, the height of the floating ball changes, the height of the display panel is fixed, the height of the display panel is equal to that of a traffic sign, and therefore passing personnel can pay attention to and observe the display panel conveniently.

The invention belongs to the technical field of water level monitoring, and particularly relates to a hydropower station water level monitoring alarm device which comprises a shell. The floating mechanism is arranged in the shell in a sliding manner; the alarm mechanism is arranged in the shell; and the recording mechanism is arranged in the shell. The floating mechanism can drive different rotating wheels to be aligned with the sliding rod along with rising of the water level, so that the sound frequency of the knocking bell hit by the knocking hammer is changed along with different water levels, compared with the mode that only one alarm can be given out after the water level rises, different alarms can be conveniently given out according to different heights of the water level, and the water level alarm effect is improved. The water level monitoring and alarming convenience is improved, a line drawing pen can draw a line on recording paper through a recording mechanism along with the rising of the water level, the height change of the water level after the water level rises is recorded, and monitoring personnel can conveniently check the water level change condition when the water level rises after alarming.

The invention provides a self-adaptive high-precision water level monitoring sensor and a mounting method thereof, and relates to the technical field of water level sensors, the self-adaptive high-precision water level monitoring sensor comprises a mounting seat, a vertical rod is fixed to the top of the mounting seat, a sliding seat slidably sleeves the surface of the vertical rod, a transverse plate is fixed to the outer side of the sliding seat, and a fixing frame is fixed to the outer end of the transverse plate; a radar water level sensor is arranged at the bottom of the fixing frame, a mounting disc is fixed to the surface of the radar water level sensor, and the mounting disc is fixedly connected with the fixing frame. Compared with the prior art, the water level is measured through the radar water level sensor and the buoy assembly together, and the detection precision is improved; and meanwhile, the buoy assembly is matched with the driving assembly and can move around the periphery of the radar water level sensor, surrounding floating objects are gathered near the storage assembly, the storage assembly is used for cleaning and keeping the water surface free of floating objects influencing radar light waves, and the detection accuracy is improved.

The utility model relates to the technical field of water treatment, in particular to a water tank cleaning device which comprises a spotlight, a light intensity detection device and a cleaning device, the spotlight is fixedly connected with a tank cover, a light-transmitting structure is arranged on the bottom face of a tank body, and the light intensity detection device is fixedly installed below the light-transmitting structure. The spotlight, the light-transmitting structure and the light intensity detection equipment are arranged in an aligned mode so that a light source of the spotlight can irradiate the light intensity detection equipment through the light-transmitting structure, and the pollution degree in the water tank can be reflected through a detection result of the light intensity detection equipment. The light intensity detection equipment is connected with the cleaning equipment, so that water quality monitoring and timely cleaning treatment of the water tank are realized, and the cost is saved to a certain extent while the cleaning effect of the water tank is ensured.

The utility model discloses a remote monitoring liquid level meter used for adding water treatment agents, and particularly relates to the field of liquid level detection, the remote monitoring liquid level meter comprises a mounting base and a mounting plate, a liquid level meter is jointly mounted between the mounting base and the mounting plate, a containing groove is formed in the lower end face of the mounting plate, and the liquid level meter is arranged in the containing groove. A cleaning device is jointly mounted between the mounting base and the mounting plate, and the output end of the cleaning device is in contact with the outer wall of the liquid level meter. The cleaning device is easy to operate, the cleaning device, the motor, the heating plate and other devices are arranged, the motor is started to drive the cleaning device to clean the outer wall of the liquid level meter in a reciprocating mode, impurities and floating algae attached to the liquid level meter can be cleaned through the cleaning device, the impurities such as incrustation or the floating algae can be effectively prevented from being attached to the liquid level meter, and the service life of the liquid level meter is prolonged. The cleaning device can be used for cleaning the liquid level meter, the situation that the liquid level meter cannot be used normally due to blockage of a detection hole of the liquid level meter is prevented, the cleaning device and the liquid level meter can be heated through the heating plate, and the situation that the environment temperature is too low and the liquid level meter cannot be used normally is prevented.

The invention belongs to the technical field of water conservancy monitoring, and particularly relates to an intelligent water conservancy online monitoring system which comprises a main frame, a mounting opening is formed in the top of the main frame, a guide sleeve fixedly connected with the main frame is inserted into the mounting opening, a moving rod is inserted into the guide sleeve, a floating plate is fixed to the bottom end of the moving rod, and a water sample monitor is fixed to the top of the floating plate. A monitoring probe on the water sample monitor penetrates through the floating plate and extends to the position below the floating plate, a displacement sensor is fixed to the top end of the moving rod, and a cleaning mechanism is further arranged on the main frame and used for regularly cleaning impurities on the moving rod. According to the device, the floating plate can descend or ascend along with the water surface, so that the water level is monitored on line, and the water sample monitor can monitor related indexes of water quality on line through the monitoring probe, so that the monitoring is more convenient, and the device structure is more simplified.

The utility model relates to the technical field of magnetic floater liquid level meters, in particular to a visual magnetic floater liquid level meter display device which comprises a body pipe, two bypass liquid guide pipes arranged on the rear side of the outer wall of the body pipe, an upper blocking cover arranged at the top of the body pipe, a flange lower cover arranged at the bottom of the outer wall of the body pipe and a turning plate box arranged on the front side of the body pipe. A magnetic turning plate indicator and a graduated scale are arranged on the front side of the turning plate box, a frame-shaped butt joint groove is formed in the front side of the outer wall of the turning plate box, a protective cover is arranged at the frame-shaped butt joint groove in a sleeving mode, and a transparent acrylic plate is arranged on the front side of the protective cover in a penetrating mode. According to the visual magnetic floater liquid level meter display device, the replaceable protective cover is designed, when the transparent acrylic plate is damaged or affected by dirt, a user does not need to replace the whole device or carry out complex cleaning, only the protective cover needs to be replaced, maintenance complexity and time cost are greatly reduced, and the visual magnetic floater liquid level meter display device is convenient to use. And the maintainability and the service life of the equipment are improved.

The invention provides a liquid level measuring device, a liquid level measuring method and a liquid container, and the liquid level measuring device comprises a sensor which is provided with a stay wire; the rotating component is connected with the other end of the stay wire and is used for rotating by taking a rotating shaft as a center; one end of the connecting rod is fixed to the rotating assembly, and the other end of the connecting rod extends outwards from the rotating assembly; the buoy is connected to the other end of the connecting rod and floats on the surface of the liquid, the buoy moves along with the change of the liquid level of the liquid, the movement of the buoy drives the connecting rod to rotate with the rotating shaft of the rotating assembly as the center, and meanwhile, the movement of the buoy drives the pull wire to generate displacement through the rotation of the connecting rod and the rotating assembly; the processor is electrically connected with the sensor; the sensor is used for converting displacement generated by the stay wire into electric signals, and the processor determines and outputs liquid level data of liquid based on the electric signals. Accurate detection of the liquid level is achieved, tiny changes of the liquid level can be detected, meanwhile, the buoy cannot be wound in the moving process, and product faults are avoided.

The invention relates to the technical field of biosensor detection, in particular to a food grease safety detection device based on a biosensor. The detection device comprises a biosensor and an electron microscope, and further comprises a built-in sampling device, and the sampling device comprises a sampling tank, a mounting column, a feeding pipe, a pressurizing assembly and a cleaning assembly; a spiral heat supply pipe is arranged in the side wall of the mounting column, and a discharge pipe is vertically arranged at the bottom; the sampling tank is composed of an upper tank and a lower tank which are in threaded connection, a first filtering disc is mounted in the upper tank, a second filtering disc is mounted in the lower tank, a mounting disc is arranged between the upper tank and the lower tank, a first-stage pressurizing space is formed between the first filtering disc and the upper tank, and a second-stage pressurizing space is formed between the center frame and the second filtering disc; a water level detection mechanism is arranged beside the second filter disc; the outer side of the feeding pipe is sleeved with a heat supply sleeve. Efficient layering, precise temperature control and intelligent cleaning of the grease food are achieved, the detection sensitivity is improved, the maintenance cost is reduced, and the device is suitable for multi-scene rapid detection requirements.

The invention relates to the technical field of dam water level monitoring, and discloses an automatic dam water level monitoring device based on the buoyancy principle. The outer surface of the stand column rod is provided with a water level monitoring assembly used for floating on the water surface to conduct water level detection and a protection cylinder used for protecting the water level monitoring assembly. According to the dam water level automatic monitoring device based on the buoyancy principle, the protection cylinder is arranged and used for protecting the water level monitoring assembly, so that impact interference caused by garbage in water to the water level monitoring assembly can be effectively prevented, fluctuation interference caused by surging of water ripples to the water level monitoring assembly is prevented, and the service life of the water level monitoring assembly is prolonged. And an auxiliary floating frame is arranged on the outer surface of the protection barrel, so that the protection barrel can adaptively adjust the protection height according to the change condition of the water level, and the protection range of the water level monitoring assembly is further widened.