66results about How to "Serve as a safety warning" patented technology

A method and system for monitoring a moving object in a site is provided. The method includes receiving the measured data of the site scanned by a three-dimensional scan device; building a three-dimensional model of the site according to the two-dimensional data of the site and the received measured data; establishing a virtual electronic fence in the three-dimensional model; and judging the positional relationship between the mobile body and the virtual electronic fence, and sending the relevant information to the terminal device according to the judging result. The method for monitoring themoving body in the place provided by the disclosure can visually and truly display the actual environment on the spot and the three-dimensional positioning of the moving body, and help the manager totimely and effectively monitor and manage the moving body in the place.

The invention discloses a self-luminous reflecting film and a preparation method thereof. The self-luminous reflecting film comprises a substrate, a reflecting layer, a reflecting-light storing layer and a surface layer sequentially from bottom to top, wherein as for the reflecting-light storing layer, ink is applied to a reflecting material die in a micro prism array structure and with a metal coating, after solidification through irradiation of an ultraviolet lamp, the reflecting-light storing layer is prepared after stripping from the die, and the reflecting-light storing layer has a thickness of 0.1 to 1 mm. The prepared light storing film can reflect light in a condition of light at night, a safety warning role is played, the light storing film can emit light in a condition with no light or weak light, the time duration can reach more than 12 h, energy loss can be greatly reduced, the energy-saving role is played, and besides, the preparation method is simple, the production cost is low, and popularization is facilitated.

The invention discloses an intelligent vehicle risk assessment method based on vehicle trajectory prediction. The method comprises a trajectory prediction step and a threat assessment step. In the trajectory prediction step, a deep learning algorithm is adopted, an NGSIM data set training and evaluation behavior prediction model is utilized to realize driving intention classification, and trajectory probability distribution of the autonomous vehicle is obtained; and in the threat assessment step, the threat in each state is quantitatively and objectively assessed through a vehicle risk assessment function, and the vehicle risk assessment function comprises collision time TTC, vehicle head time interval TH and enhanced collision time ETTC. Trajectory prediction and risk assessment of the vehicle are combined for consideration, a complete model structure is established, it is guaranteed that after the trajectories of the autonomous vehicle and the surrounding vehicles are obtained, whether the trajectories conflict with the traffic vehicle or not can be assessed, and then whether the autonomous vehicle is dangerous or not is determined.

The invention discloses a haze-proof cap, which comprises an upper case, a support frame, a memory cotton liner, a lower case, a transparent wind blocking cover, a filtering material assembly, a fan assembly, an LED (light emitting diode) lamp group, a rechargeable battery, a circuit board and a switch assembly, wherein the memory cotton liner is internally lined at the inner side of the support frame; the LED lamp group and the rechargeable battery are assembled on the support frame; the circuit board and the switch assembly are assembled on the lower casing; the support frame, the upper case and the lower case are jointly assembled to form a C-shaped cap body; the transparent wind blocking cover is assembled at the sealed end of the cap body; the filtering material assembly and the fan assembly are assembled and arranged at the opening end of the cap body and filtered and purified air is input into a space formed at the inner side of the transparent air blocking cover through an air guide pipe. The haze-proof cap has the advantages that the wearing is simple and convenient; the three-dimensional air purification effect is achieved in a narrow and small space in the mouth and nose position; the use performance is safe and reliable; the invasion caused by outgoing in haze weather is effectively avoided.

The invention belongs to the technical field of coatings, and particularly relates to an energy storage type environment-friendly luminescent coating and a preparation method thereof. The film-formingsubstance of the coating is one or more selected from polyesterimide resin, polyurethane resin, organic silicon modified acrylic resin and epoxy resin and cooperates with other components, so the energy storage type environment-friendly luminescent coating is free of caking, resistant to heat and good in insulativity, and the initial luminescent brightness and afterglow time of the rare earth ionactivated strontium polyaluminate luminescent material are guaranteed; the strontium polyaluminate luminescent material activated by rare earth ions and doped with titanium dioxide and boric acid iscoated with silicon dioxide by adopting a microemulsion method, and is cooperated with other components, so luminescent pigment particles in the obtained energy storage type environment-friendly luminescent coating are good in dispersity, the initial luminescent brightness of the rare earth ion activated strontium polyaluminate luminescent material is improved, and afterglow time is prolonged; anda toughening agent is used in the energy storage type environment-friendly luminescent coating, so the aging resistance, weather resistance and scratch resistance of the energy storage type environment-friendly luminescent coating are improved.

The invention discloses a field operation helmet which is characterized in that sound-proof earmuffs are arranged inside the helmet, an electronic clinical thermometer occultation band is embedded in the helmet, an interphone speaker and a micro LED anti-explosion flashlight are arranged outside the helmet, a photochromic ocular lens is adopted, and reflective materials and fluorescence materials are sprayed on a helmet body. The field operation helmet integrates multiple functions, namely, a use function, a comfortably wearing function, a head safety protection function, an illuminating function, a body temperature measuring function, a camera shooting function, a communication function, a sound recording function, an eye protection function and an ear protection function. An embedded type and an outside hung type are combined to form the assembly structure of all functional assemblies, convenience and simplicity are obviously displayed, and meanwhile complex functional combination is achieved. The field operation helmet has the advantages that the categories, the number and the weight of tools which are carried by engineering workers are reduced, complexity of achieving operation through a specific function is reduced, labor intensity of the workers is lowered, and labor productivity is improved.

The invention discloses a brake flange component. The brake flange component comprises a brake flange; the brake flange comprises a brake part located on the periphery, an installing part located on the inner circumference, and a transition part located between the brake part and the installing part; and the brake flange component further comprises a heat radiating ring installed at two sides of the brake flange and used for radiating. The heat radiating ring is equipped with light sources, such as an LED, or is coated with fluorescent paint or reflectorized paint on the surface, is pasted with fluorescent label or reflectorized label, and is processed with other surface processing, such as anode processing and electroplating processing, for safety warning function; the heat radiating ring is opened with a wind guide channel, the brake flange is cooled by the wind formed in the driving process of the vehicles, the brake flange is not easily transformed, so the service life is prolonged; an inner ring is additionally equipped with an inertia generating device, or a solar generating device for satisfying the own requirements; the heat radiating ring is directly connected by male-female buttons for convenient detaching; and the heat radiating ring can be made as various shapes for decoration and beautification function.

The invention relates to a safety helmet with reflecting strip plates. The safety helmet comprises a safety helmet body, wherein a left front side reflecting strip plate is fixedly arranged at the left front side of the safety helmet body; a right front side reflecting strip plate is fixedly arranged at the right front side of the safety helmet body; a top reflecting strip plate in the forward and backward direction is fixedly arranged on the top right above the safety helmet body; a right back side reflecting strip plate is fixedly arranged at the right back side of the safety helmet body; a left back side reflecting strip plate is fixedly arranged at the left back side of the safety helmet body. The safety helmet has the advantages that through the reflecting strip plates arranged in each direction on the safety helmet body, operators can be favorably discovered; the safety warning effect is achieved; meanwhile, light pollution cannot be caused on the ambient environment; better safety guarantee is provided for the operators of an electric power system.

The invention discloses a novel intelligent financial management system which comprises a financial management terminal computer, an information processor and a cloud management module. One side of the financial management terminal computer is electrically connected with the financial management terminal computer and a document scanner. One side of the document scanner is electrically connected with a rotating camera. One side of the rotating camera is electrically connected with a two-dimensional code and the information processor. The novel intelligent financial management system facilitatesthe storage and inquiry of monitoring information by using the rotating camera, the two-dimensional code, the document scanner and the like. A wireless router is connected between an alarm and a network conversion machine and serves to send alarm information and warning information. An early warning device is connected with the financial management computer to play the role of early warning of safety. The novel intelligent financial management system solves problems such as low intelligent degree of the system, low safety factor of operating environment, inconvenient operation and management,incomplete monitoring, higher possibility of regulatory loopholes in safety protection system of existing power system.

The invention discloses a construction method of a drip irrigation type ecological fence. The construction method comprises the following steps that (a) baffles are assembled; (b) a warning board is assembled; (c) assembling is carried out to form a wall; (d) supporting piles are placed in place; (e) the supporting piles are fixed; (f) a pipeline is mounted; and (g) a planting basket is installed.The construction method is simple to operate, easy to construct, low in difficulty, high in construction efficiency, labor-saving, convenient and fast, high in construction quality, stable in ecological fence structure, variable in length, high in adaptability, large in shielding range, good in effect, reusable after being disassembled, high in resource utilization rate and cost-saving; and a three-dimensional greening mode is adopted, attractiveness can be improved, raised dust can be adsorbed, and the dust reduction effect is achieved.

The invention discloses a pilot hydraulic control system based on a multi-shuttle-valve set. The pilot hydraulic control system comprises a hydraulic pump connected with an oil tank, a pilot control valve set connected with the hydraulic pump, the multi-shuttle-valve set and a solenoid valve set composed of multiple solenoid directional valves. The pilot control valve set comprises a winch pilot control valve, a loading rotary pilot control valve, a power head rotating pilot control valve, a pressurization variable-amplitude pilot control valve, a left walking pilot control valve and a right walking pilot control valve. The multi-shuttle-valve set comprises multiple shuttle valves arranged in a valve body and common oil outlets arranged on one side of the valve body, each shuttle valve comprises two inlets and a working opening, the working opening of each shuttle valve communicates with one corresponding common oil outlet, and each common oil outlet is an idling-speed pressure signal collection opening. According to the pilot hydraulic control system, the multi-shuttle-valve set is adopted for acquiring idling-speed pressure signals, and idling speed control is reliable; and the appearance of the multi-shuttle-valve set is reduced, oil passing hole channels in the multi-shuttle-valve set are reduced, and machining is easier.

The invention discloses a method for preparing a sealed reflective fabric material by using a bead coating process. According to the method, surfaces of glass beads are modified by a coupling agent; stable coupling agent coating layers are formed on the surfaces of the glass beads; the surfaces of the glass beads are relatively smooth; the other amino-terminated group of the coupling agent is a hydrophilic organic group; the compatibility between the coupling agent and the organic solvent can be improved; the interface bonding force between the glass beads and the coating can be improved; the film formed by the coating is high in compactness; the interface between the glass beads and the coating is relatively smooth, is similar to an ideal concave mirror, and has an effect of focusing the light; the light entering into the glass beads almost completely returns back along the original direction; the interface has an excellent retro-reflection effect and can achieve a safety warning effect.

The invention provides a real-time rainfall monitoring system and method based on automobile wipers. The system includes a cloud service center and wiper sensors installed on automobiles and used forsensing the running speeds of corresponding automobile wipers. The wiper sensors of the automobiles sense the running speed information of the wipers and upload the acquired data information to the cloud service center in time. The cloud service center analyzes the collected big data to obtain the rainfall and movement trend information of a corresponding region. The rainfall and movement trend ofa region are obtained through big data analysis, and drivers around are reminded not to go to places prone to landslide or culvert water accumulation during a rainstorm. Thus, a safety warning effectis achieved. Moreover, the system and the method have the advantages of low installation difficulty, low cost and accurate data.

The invention relates to a part installed on the hub of a vehicle. A fixing base is installed on the hub of the vehicle, a rotating shaft is installed on the fixing base, a shaft hole of a bearing sleeves the rotating shaft and is fixedly connected with the rotating shaft, a generator casing is internally provided with a coil, the generator casing and the rotating shaft rotate along with the hub,a magnetic core is fixed to the bearing and installed at the position, corresponding to the coil, in the generator casing, a gravity hammer is hung on the magnetic core to prevent the magnetic core from rotating along with the rotating shaft, a marker is fixed to the gravity hammer, electric energy generated by a generator is input into light-emitting diodes to illuminate the marker, and a transparent cover is installed on the fixing base. No matter when the vehicle runs in the daytime or at night, passersby can see the marker of the vehicle clearly from one side. Under the illumination of thelight-emitting diodes in different colors, the attractiveness of the vehicle running at night is increased; passersby can better notice the running vehicle, and a safety warning effect is achieved.

The invention discloses a safety alert indicator light. The indicator light includes an alternative current-direct current conversion circuit, a detection circuit, an oscillator circuit and an indicator light circuit; the alternative current-direct current conversion circuit is connected to the detection circuit, the oscillator circuit and the indicator light circuit; the detection circuit is connected to the oscillator circuit; and the oscillator circuit is connected to the indicator light circuit. The indicator light adopts an anti-interference power supply to power up and uses an LED lamp as a light source; improvement can be made for existing gas alarms by combining a gas sensor and a triode; and through the combination of gas detection and a lighting lamp, the lamp can be used as lighting under a normal situation and can flicker and shine when an alarm is triggered, so that safety warning effects can be well achieved.

The invention discloses a side lane collision early warning system, which comprises an induction part, wherein the induction part is used for inducing incoming vehicles and obstacles at the two sides,a profile indicating lamp, wherein the profile indicating lamp is used for prompting the vehicle position to a side vehicle driver in side front or the side rear; an indicating lamp, wherein the indicating lamp is used for prompting the driver of the vehicle for incoming vehicles or obstacles at the side front or the side rear; a control system, wherein the control system is electrically connected with the inducing part, the profile indicating lamp and the indicating lamp respectively and is used for controlling the profile indicating lamp of a corresponding part and the indicating lamp of the corresponding direction to blink after receiving the signal of the inducing part. When driving, particularly when driving at night, underground garages, tunnels or places with insufficient light, the system can provide early warning feedback for the driver in the vehicle on the side driveway so as to provide safety protection for the vehicle in a reverse direction; and meanwhile, the system canremind the driver of the vehicle when vehicles or obstacles come in the side driveway, so that the system can play a safety early warning role.

The invention discloses a light-emitting intrinsic safety coaxial composite low-voltage cable for an environment-friendly smart power grid and a preparation method of the light-emitting intrinsic safety coaxial composite low-voltage cable. The light-emitting intrinsic safety coaxial composite low-voltage cable comprises a cable core, wherein the cable core is formed by twisting a single circular insulating wire core located at the center of the cable core and a plurality of fan-shaped insulating wire cores which surround the outside of the circular insulating wire core and are arranged concentrically with the circular insulating wire core; a ceramic fireproof layer wraps the outside of the cable core; a metal armor layer which is 0.5mm in thickness wraps the outside of the ceramic fireproof layer; a high-conductivity alloy wire of which the outer diameter is 0.65mm is embedded into the metal armor layer; a high-strength low-smoke halogen-free flame-retardant olefin sheath layer which is 2.0mm in thickness coats the outside of the high-conductivity alloy wire in an extruding manner; and a fluorescence induction red warning ribbon is arranged in the high-strength low-smoke halogen-free flame-retardant olefin sheath layer. The light-emitting intrinsic safety coaxial composite low-voltage cable is reasonable in structural design; the backward productivity is eliminated; transformation of scientific and technological achievements is achieved; the cost performance of a product is greatly improved; resources are saved; and benefits are brought for people.

The invention discloses a method for monitoring battery data under a parking state of a pure electric vehicle and a vehicle-mounted terminal. The method comprises the steps that the fact that the vehicle is under the parking state is determined; a first timer is started; after the first timer reaches the first preset duration, an awaking signal is output to a battery management system in the vehicle; the battery data reported by the battery management system are received; the battery data are sent to a control platform; a dormancy signal is output to the battery management system to enable the battery management system to enter a dormancy or closed state. The method for monitoring the battery data under the parking state of the pure electric vehicle and the vehicle-mounted terminal can monitor the battery data under the parking state of the pure electric vehicle, and not only can collect accurate battery voltage and temperature data, but also do not consume a large amount of energy capacity of a battery in the whole working process.

The invention discloses a bypass operation low voltage rapid conversion device, and monitoring, releasing and displaying methods thereof. A circuit breaker is individually disconnected by the electronic release control, and a voltage detection module collects ABC phase voltages of outlet ends of the circuit breaker and then outputs voltage detection signals. A current detection module collects ABC phase currents of the outlet ends and then outputs current detection signals. A zero sequence current detection module collects zero sequence currents of the outlet ends of the circuit breaker and then outputs zero sequence current detection signals. A control module is coupled to a display module, the voltage detection module, the current detection module and the zero sequence current detection module. The display module displays amplitudes of the ABC phase voltages and the ABC phase currents and amplitudes of the zero sequence currents. The control module determines the control of an electronic release to disconnect the circuit breaker according to the detected phase current amplitude or zero sequence current amplitude. The bypass operation low voltage rapid conversion device achieves quick disconnection, automatic and manual switching on and off, and multi-parameter state display, thereby improving the safety and reliability of construction operations of live-line maintenance operators for power grids.

The invention relates to an environment-protection weather-proof self-temperature-sensitive fireproof cable, and overcomes disadvantages in the prior art. The cable comprises a cable core, an inner halogen free taping, an aluminum sheath, a fireproof mud isolation layer, an intermediate halogen free taping, a steel band linked armor layer, an outer halogen free taping and an oversheath; the innerhalogen free taping wraps the cable core, the aluminum sheath wraps the inner halogen free taping, the fireproof mud isolation layer wraps the aluminum sheath, the intermediate halogen free taping wraps the fireproof mud isolation layer, the steel band linked armor layer wraps the intermediate halogen free taping, the outer halogen free taping wraps the steel band linked armor layer, and the oversheath wraps the outer halogen free taping; and the oversheath is a self-temperature-sensitive color-change oversheath.

The invention discloses a bright elastic ribbon, which comprises a ribbon body formed by weaving a plurality of warps, a plurality of wefts and a plurality of rubber threads, wherein both sides of theribbon body are provided with bindings, a bright yarn layer is woven on the front of the ribbon body, and the bright yarn layer is formed by weaving a plurality of bright yarns regularly. Since the bright yarn layer is woven on the elastic ribbon, the elastic ribbon has an excellent reflecting function, so that clothing, backpacks and the like with the bright elastic ribbon have the reflecting function, and the bright elastic ribbon is particularly suitable for field environments and disordered traffic environments, playing the role of safety warning.

The invention discloses a monitoring system for formation stability and tunnel structure long-term health of a shield tunnel. The system comprises a vibrating wire type or fiber grating type earth pressure gauge, an osmotic pressure gauge, a steel stress gauge, a strain gauge, vibrating wire type surface crack meters, vibrating wire type liquid level sensors, a crack meter and data acquisition units. The vibrating wire type or fiber grating type earth pressure gauge is embedded on the outer surface of a duct piece with the pressure surface facing a soil body. The osmotic pressure gauge is embedded in a tunnel lining and used for monitoring the osmotic pressure of the tunnel lining. The steel stress gauge is arranged in a concrete segment. The strain gauge is embedded in the concrete segment and used for monitoring the strain of concrete. The two ends of the vibrating wire type surface crack meters are separately arranged on adjacent tunnel concrete segments by universal joints, and thevibrating wire type surface crack meters are used for monitoring the opening degree of the adjacent concrete segments. The vibrating wire type liquid level sensors measure the change of elevations ofa measuring point and a reference point. The crack meter is embedded in the concrete segment and used for measuring the crack condition of the tunnel segments. The data acquisition units are used forcollecting sensor signals in various geotechnical engineering safety monitoring projects.

The invention discloses a luminous intrinsic safety four-core composite low-voltage cable for an environment-friendly intelligent power grid and a fabrication method of the cable. The cable comprises a cable core, wherein the cable core is formed by twisting a single round insulation wire core and a plurality of fan-shaped insulation wire cores, a gap of the cable core is filled with a halogen-free low smoke glass fiber rope, a ceramic fireproof layer wraps the cable core, a metal armor layer wraps the ceramic fireproof layer, a high-conduction alloy wire is embedded in the metal armor layer, a high-strength halogen-free low smoke flame-retardant olefin outer protection layer is extruded outside, a fluorescent sensing red warning color tape is arranged in the high-strength halogen-free low smoke flame-retardant olefin outer protection layer, the round insulation wire core comprises a round conductor and a round insulation layer, the round insulation layer wraps the round conductor, each fan-shaped insulation wire core comprises a fan-shaped conductor and a fan-shaped insulation layer, and the fan-shaped insulation layer wraps the fan-shaped conductor. With the adoption of a structure combining a round shape and a fan shape, the roundness and all performances of the cable are further improved; and the cable is reasonable in structure design, the backward yield is eliminated, the transformation of scientific and technological achievements is achieved, the product cost performance is greatly improved, the resource is saved, and the benefit is brought to people.

The invention discloses an electricity leakage prevention structure, and relates to the field of electric appliance control. The electricity leakage prevention structure comprises a shell, an upper seal cover, an upper end cover, a lower seal cover, a lower end cover, a temperature sensor, an audible and visual alarm and a current detection chip. The shell is a stainless steel seamless pipe body;an anti-corrosion layer is arranged on the inner wall of the shell; an insulating layer and a thermal insulation layer are sequentially wrapped on the outer wall of the shell; and a 400 mm folded reciprocating flow channel formed by connecting 9 rubber hoses end to end in series in a communicating manner is further arranged in the shell, it is ensured that the water resistance is large enough, andtherefore environment electricity leakage is initiatively prevented. Because the upper end cover and the lower end cove can each be directly formed through injection molding and are then fastened andconnected through bolts, assembly is easy, the structure is compact, production and machining are easy, and the manufacture cost is low. The temperature can be detected in real time through the temperature sensor with a liquid crystal display screen and a waterproof probe. If the current detection chip detects the electricity leakage situation, a light-emitting rotating LED warning light of the audible and visual alarm can make alarm sounds, and the safety warning effect is achieved.

The invention relates to warning equipment, in particular to bottom safety warning equipment for high-rise building construction. The bottom safety warning equipment for high-rise building construction aims at achieving the technical purposes that warning content can be expressed, and automatic cleaning can be achieved. According to the technical scheme, the bottom safety warning equipment for high-rise building construction comprises a supporting plate, a machine shell, clamping plates, first springs and the like, the machine shell is arranged at the top of the supporting plate, the clamping plates are slidably connected to the left side and the right side of the upper portion in the machine shell, the first springs are arranged between the upper side and the lower side of each clamping plate and the machine shell, and the clamping plates are slidably connected to warn passersby. According to the invention, sound is detected through the sound sensor, so that the electric push rod operates to drive the indicator board to rise, and therefore, passersby can see prompt words on the indicator board, and a safety warning effect is achieved.

The invention discloses an anti-theft bag provided with a light-emitting diode (LED) lamp, belonging to the field of an article for daily life. The anti-theft bag comprises a bag body, the LED lamp, a switch, a circular-arc-shaped pocket, and a controller, an inductor, an acoustic generator and a power supply which are arranged in the circular-arc-shaped pocket, wherein the LED lamp is connected with the controller by the switch, the power supply, the inductor and the acoustic generator through a control circuit. The anti-theft bag has the beneficial effects that things in the bag can be prevented from being stolen so as to avoid property loss; meanwhile, when a person with the anti-theft bag walks at night, the anti-theft bag has the function of security warning; and furthermore, the anti-theft bag is simple in structure, reasonable in price, applicable to ordinary people and especially suitable for people who often pass in and out of crowded occasions.

The invention belongs to the field of automobile safety early warning, and particularly relates to an automobile body posture safety early warning system. The automobile body posture safety early warning system comprises an adjusting module, an early warning module, a display module and a data storage module. The adjusting module comprises a MPU6050 module, a USB-to-TTL module, a PC end and an upper computer. The early warning module comprises a MPU6050 module, a 51 single chip microcomputer and an alarm apparatus. The display module comprises a display. The data storage module comprises a latch and a memorizer. According to the automobile body posture safety early warning system, relatively inexpensive hardware materials are adopted, so that the development cost is reduced; the purpose that a driver is timely reminded of dosing safe operation to avoid an accident when the maximum slope-climbing angle of an automobile is reached or the side overturning crash risk is faced is achieved through the display and the alarm apparatus; the effect of safety early warning can be achieved, longitudinal and transverse inclination angle data of an automobile body can also be provided for an automobile ECU at a later stage, the automobile body posture safety early warning system is used for better controlling a driving suspension so as to better improve the driving stability and ride comfortableness of the automobile.

The invention provides a colorful light-accumulating glass steel anchor rod and assembly which comprises an anchor rod, a screw cap and a tray and is characterized in that one end of the anchor rod is arranged on the tray, and the other end of the anchor rod is provided with the screw cap. The anchor rod and assembly is prepared from the following components in parts by weight: 100 parts of resin, 10-20 parts of filler, 10-20 parts of chopped glass fiber, 1-2 parts of a releasing agent, 2-3 parts of an antistatic agent, 2-3 parts of a flame retardant, 1-2 parts of accelerant, 0.5-1 part of a curing agent, 3-10 parts of silicate high-temperature noctilucent powder and 3-5 parts of a reflecting material. The colorful light-accumulating glass steel anchor rod and assembly not only plays a reflecting effect in the presence of light, and can automatically absorb and accumulate light in the presence of light; further, the colorful light-accumulating glass steel anchor rod and assembly can emit light in case of no light to play a safety warning role and can also take effects of beautifying and decorating.

The invention discloses a hydraulic oil tank liquid level and density alarming device which comprises an oil tank body which is provided with an oil adding opening, an oil returning opening and an oil outlet. A supporting frame is fixedly arranged in the oil tank body, and a sensor assembly is installed on the supporting frame. A sensing output harness of the sensor assembly is connected with a signal amplifying alarm located outside the oil tank body. According to the hydraulic oil tank liquid level and density alarming device, a sensor is additionally arranged in the oil tank to monitor the oil level and the oil stain degree of the hydraulic oil tank in real time, when the oil level is insufficient or hydraulic oil is contaminated severely, alarming can be performed in time, and a prompting function is achieved. Pure hydraulic oil is added or used for replacing original hydraulic oil in time, the operation state of a hydraulic system is improved, and normal operation of the hydraulic system is guaranteed. A sensing manner is simple in structure, effects are obvious, installation is convenient, selected elements are high in universality, the structure is safe and high in reliability, and the hydraulic oil tank liquid level and density alarming device is convenient to use.