53 results about "Alarm sensor" patented technology

The invention relates to the technical field of alarm devices, and discloses a building monitoring management system based on the Internet of Things, which is characterized in that when an alarm sensor generates an early warning signal, a side evidence confirmation module captures power grid harmonic data and compares the power grid harmonic data with a benign equipment feature library, and whether to trigger an alarm or not is determined according to a matching result; according to the invention, through a time sequence mutual identification mechanism of power grid harmonic waves and alarm signals, real fire behavior and equipment operation interference are fundamentally distinguished, and the alarm accuracy is significantly improved; meanwhile, passive positioning is achieved through the multi-branch harmonic intensity difference, the error suppression risk in a large building is eliminated, the equipment health state is monitored through the harmonic entropy change trend, and a complete safety closed loop from early warning to prevention is formed.

The invention belongs to the technical field of liquid level alarm, and discloses a liquid level alarm sensor with a self-checking device, which comprises a liquid level display, the bottom of the liquid level display is fixedly connected with a first guide rod through a mounting plate, and the bottom of the first guide rod is detachably connected with a second guide rod. Through cooperation of structures such as a cap-shaped filter screen and a hollowed-out baffle, the service life of the self-checking device is prolonged, through the design of double cavities and double pumps, the floating cavity and the lower liquid storage cavity are divided, the micro liquid pump and the micro vacuum pump are matched, during self-checking, through liquid suction and liquid drainage operation, the initial value and the change range of the numerical value of the liquid level displayer are compared, and the self-checking efficiency is improved. By means of the technical scheme, the common shell damage and clamping stagnation problems can be basically judged, the self-inspection efficiency of maintenance personnel is improved, in the liquid suction and drainage process, particulate matter or sticky liquid can be contained at the top through the cap-shaped filter screen, the peripheral contact area is effectively increased, and during liquid drainage, the flexible net bag in the middle of the cap-shaped filter screen turns over reversely, and the mesh blockage situation is effectively reduced.

The invention provides a wireless combustible gas alarm system and method, and relates to the technical field of combustible gas alarm, the system comprises a sensor node, a sink node and an alarm terminal, the sensor node collects gas concentration in real time, and after temperature and gas pressure compensation and Kalman filtering processing, the gas concentration is sent to the sink node; the 2.4 GHz / 433MHz dual-band wireless module is used for sending a first-level early warning signal or a second-level alarm signal; the aggregation node fuses multi-node data and optimizes signal transmission stability, and the alarm terminal triggers sound-light alarm according to signals and sends an alarm short message containing positioning information. According to the method, hierarchical alarm logic is adopted, multi-node linkage triggering of high-level alarm in the same area is supported, sensor nodes have dormancy self-inspection and fault alarm functions, the whole system adapts to a complex industrial environment, the monitoring precision is improved through an environment compensation and filtering algorithm, signal reliability is enhanced through dual-band communication, and the system reliability is improved. Differentiated emergency response is achieved through a multi-stage alarm mechanism, and long-term stable operation is guaranteed through the low-power-consumption self-maintenance design.

The present application belongs to the technical field of blade clearance protection, and particularly relates to a wind turbine generator unit blade clearance protection system and method. The technical scheme is as follows: a wind turbine generator unit blade clearance protection system, comprising a clearance protection control box and a blade tip deformation alarm sensor, the blade tip deformation alarm sensor is arranged corresponding to the blade tip of a fan, the blade tip deformation alarm sensor is electrically connected with the clearance protection control box, a fan control system and a wireless receiver are further installed on the fan, the clearance protection control box is in communication connection with the wireless receiver, and the wireless receiver is electrically connected with the fan control system. The present application provides a wind turbine generator unit blade clearance protection system and method for measuring whether the blade clearance is within a safe range by using a deformation switch sensor.

The invention provides a trace element detection instrument. The trace element detection instrument comprises a foldable and turnover shell; the liquid supply mechanism comprises a test tube with a peristaltic pump, and the test tube is provided with a replaceable filter membrane, a liquid level alarm sensor and a modular fixing seat; the reaction tank replacement mechanism realizes elastic installation of the reaction tank through a first elastic assembly at the tail part of the six-way valve; the optical measurement module detects an excitation light signal through a laser transmitter, a probe sensor and a photoelectric sensor and converts the excitation light signal into concentration data; the six-way valve is connected with the flow velocity measurement module and calculates the liquid flow velocity through the glass tube and the upper and lower sensors; waste liquid is discharged into a middle waste liquid pool through a waste liquid head linked with the pressing block. Through the foldable shell, the elastic docking mechanism, low residual fluid control, real-time flow rate monitoring and automatic waste liquid treatment, high precision, high efficiency and high adaptability of the detection process are achieved, and the device is suitable for multi-scene trace element analysis such as clinical detection and environment monitoring.

The utility model discloses a pipe piling detection device and a heat shrink tube conveying system, the pipe piling detection device comprises a support, a moving block, a swing assembly and an alarm sensor, one side of the support is provided with a support member, the moving block is slidably arranged on the support member, the swing assembly is rotatably arranged on the moving block, and the alarm sensor is arranged on the support member. The swing assembly correspondingly extends to the moving path of the pipe, and the alarm sensor is arranged on the support and correspondingly faces the swing assembly so that the alarm sensor can send out an alarm signal when the swing assembly deviates from the original position. According to the pipe expanding and conveying device, the pipe stacking phenomenon possibly occurring in the pipe expanding and conveying process is detected, and an alarm is given immediately after the pipe stacking phenomenon is detected, so that field staff are reminded to process in time, the number of waste products is reduced, and the phenomenon of material waste is effectively avoided; and smooth operation of the whole process is effectively ensured.

The utility model provides an alarm device for emergency safety. The alarm device comprises a mounting plate; and the supporting frame is fixedly mounted at the bottom of the mounting plate, a fixing frame is fixedly mounted on one side of the supporting frame, and a driving motor is fixedly mounted on one side of the fixing frame. According to the emergency safety alarm device provided by the utility model, through mutual cooperation of the driving motor, the worm, the worm gear, the rotating shaft, the winding wheel, the pull rope, the fixed plate, the support frame, the first contact terminal, the second contact terminal and other structures, when the device operates, the driving motor is started to drive the worm to rotate, and then the worm drives the worm gear to operate; by means of the self-locking characteristic of the worm and gear mechanism, after the driving motor stops working, the worm gear and a part connected with the worm gear can stably maintain the current position, the characteristic not only avoids random lifting of the alarm device body caused by accidents, guarantees the stability of the alarm device body during working, but also ensures that the alarm sensor is always located at the optimal detection position, and improves the detection accuracy. And the detection precision is improved.

The utility model discloses a fuel oil distribution connector which comprises a distribution block body, and a fuel oil return channel, a leakage oil return channel and a fuel oil inlet channel are sequentially arranged in the distribution block body from top to bottom. A fuel oil leakage alarm sensor is installed on the leakage oil return channel, a leakage oil inlet and a leakage oil outlet are formed in the leakage oil return channel, the height of the leakage oil inlet is smaller than that of the leakage oil outlet, and the height of the leakage oil outlet is larger than that of a middle electrode of the fuel oil leakage alarm sensor. According to the fuel oil leakage alarm sensor, a total oil inlet and return channel is integrated, the leakage alarm and leakage functions are achieved, and meanwhile the problem that when the fuel oil leakage alarm sensor is used in a transversely-arranged state, due to the fact that the fuel oil leakage amount is small, and the liquid level does not reach an intermediate electrode, alarming cannot be conducted is solved.

The utility model belongs to the technical field of fire extinguishing simulation, and particularly relates to an airplane fire extinguishing system simulation training device which comprises an operation module, a display module and a simulation circuit module which are connected with one another. The control relationship between the line laying and construction of the analog circuit module and the preset line on the airplane is consistent, and the circuit of the analog circuit module is provided with an analog fire alarm sensor used for simulating a fire alarm signal; the operation module controls a simulation fire alarm sensor in the simulation circuit module to simulate and generate a fire alarm signal according to the operation of a user, and reads the response of the simulation circuit module; the display module displays corresponding information according to the states of the operation module and the analog circuit module. The technical scheme provided by the utility model corresponds to the real object installation position on the machine completely according to the control relation of the actual circuit on the machine, and adapts to the operation environment and operation mode which are basically consistent with the real installation. The fire extinguishing system can simulate airplane fire and fire extinguishing line and pipeline actions after fire, and the working principle of the fire extinguishing system can be visually demonstrated.

The utility model discloses an intelligent self-cleaning smoke furnace device capable of increasing rain and snow through artificial catalysis. The intelligent self-cleaning smoke furnace device comprises a smoke furnace body, a ventilation automatic adjusting device, a control system, an alarm sensor, a contact wiring board and a self-cleaning layer. The outer wall of a chimney of the smoke furnace body is coated with a self-cleaning layer, the ventilation automatic adjusting device is arranged at the bottom of the smoke furnace body, the alarm sensor, the contact terminal wiring board and the control system are all arranged on the smoke furnace body, the contact terminal wiring board is connected with a smoke pipe ignition wire of the smoke furnace body, and the control system is connected with the smoke pipe ignition wire of the smoke furnace body. The alarm sensor, the contact terminal wiring board and the ventilation automatic adjusting device are all connected with the control system. The smoke furnace has the advantages that by integrating advanced technologies and equipment, automatic and intelligent operation of the smoke furnace is achieved, operation efficiency and safety are improved, and meanwhile maintenance cost and environmental influence are reduced.

The invention relates to the technical field of aquaculture constant-temperature equipment, and discloses an aquaculture circulating water constant-temperature control system and method based on microwave energy, and the system comprises a base plate, and the center of the top surface of the base plate is fixedly provided with a culture barrel, a microwave generation module, a circulating water treatment unit, a temperature detection network, an intelligent control center and a safety protection system. The microwave generation module comprises a heat preservation box, a heat exchange tube, a resonance tube, a magnetron and a waveguide, the circulating water treatment unit comprises a rotary drum type filtering device, a water tank and a flow sensor, and the temperature detection network comprises a water quality monitoring probe, a multi-point distributed optical fiber temperature sensor, an intelligent control center touch control type man-machine interaction interface and a PLC. The safety protection system comprises a high-temperature alarm sensor, a resonant cavity pressure safety valve and a microwave leakage monitoring probe, a double-closed-loop control strategy is adopted, an inner ring is used for controlling microwave power, an outer ring is used for adjusting circulating flow, and the device can dynamically optimize a temperature curve according to breeding varieties and growth stages.

The present invention discloses a revolvable multifunctional fire escape pipe gallery for temporary buildings and a method for using the same, and relates to the field of building technology. The revolvable multifunctional fire escape pipe gallery for temporary buildings includes a fire alarm response system, a fire escape pipe gallery system, and a protective fence system. The fire alarm system includes a fire alarm sensor, a sensor line, and a jack alarm reactor. The revolvable multifunctional fire escape pipe gallery for temporary buildings and a method for using the same can be used in a revolving state, reduce costs and increase efficiency, and combine the pipe gallery with an evacuation and escape device into one. In normal times, the pipe gallery characteristics are used to arrange the pipes and used as a ground road. In emergencies, the evacuation and escape device can function. One thing has multiple functions, which greatly improves the energy efficiency of the equipment. The various components are linked through a fire sensing device and automatically triggered in an emergency, avoiding the time loss caused by manual operation and increasing the evacuation time.

The utility model relates to steel wire rope technical field, and disclose a kind of cable force detection device of sealed steel wire rope, including steel wire rope body, the left and right sides of steel wire rope body are all fixedly connected with connecting section, the surface of steel wire rope body is provided with detection component, the detection component includes hug tightly hoop, stress sensor, armoured cable, wireless gateway, sensor protection shell, cloud platform and cell -phone APP, two the hug tightly hoop is fixedly installed on the surface of steel wire rope body, by setting detection component, hug tightly hoop can firmly fixed stress sensor on the two sides of steel wire rope body, improve the precision of detection, simultaneously, wireless gateway can be detected data is transported to cell -phone APP by cloud platform, if cable force mutation or unbalance is found, can immediately alarm, sensor protection shell can also carry out protective work to stress sensor, realize the work of dustproof, waterproof and anti-impact, guarantee the stability of steel wire rope body cable force detection.

The invention provides a coal mine safety monitoring alarm studying and judging method and system based on data fusion. The method comprises the following steps: establishing an identification framework for representing alarm causes; determining a first support probability of various alarm causes in the recognition framework according to data of an alarm sensor; determining a second support probability of various alarm causes in the recognition framework according to the same type of sensor data located at the upstream and downstream of the alarm sensor; determining a third support probability of various alarm causes in the recognition framework according to different types of sensor data located in the same area as the alarm sensor; and fusing the first support probability, the second support probability and the third support probability of each type of alarm cause based on an evidence theory to obtain an occurrence probability representing each type of alarm cause, and studying and judging the cause of the alarm event according to the occurrence probability. According to the technical scheme provided by the invention, the accuracy and reliability of alarm reason identification are remarkably improved while the research and judgment efficiency is improved.

The invention relates to the technical field of radio measurement, in particular to a fire dynamic sensing and processing system for a construction site of a dual-purpose car washer, so as to achieve the purpose that in the process that the car washer sprays at the positions of alarm sensors issuing fire alarms, the fire alarms are sent out according to the distance between each alarm sensor and each car washer; determining a to-be-supported car washer which does not start spraying and corresponds to each alarm sensor; determining a current threat index according to the difference between the overall trend of the fire diffusion rate at the position of the alarm sensor which newly issues the fire alarm currently and the overall trend of the fire diffusion rate at the position of each alarm sensor which has issued the fire alarm historically; and respectively selecting the to-be-supported car washing machine conforming to the proportion of the threat index from the to-be-supported car washing machines of the alarm sensors to spray to the positions of the corresponding alarm sensors. The car washing machine is dynamically dispatched for support along with fire spreading, and therefore the fire control effect is improved.

In some embodiments, a window fan has a housing mountable in a window, the housing comprising one or more fans therein and including interior and exterior sides and a top side, the top side configured to be in touch with a window panel when the window is in a closed state. An alarm sensor is disposed on the top side of the housing and configured to detect whether the window is open. A control circuitry is provided and configured to: responsive to the alarm sensor detecting that the window is in the open state, activate an alarm output device. The control circuitry may cancel an alarm upon receiving a user command from a control panel or detecting that the alarm sensor is disengaged by a sensor stopper.

The utility model relates to the related technical field of electric appliance fire hazard sensing and alarming sensors, in particular to an electric appliance fire hazard sensing and alarming sensor, which comprises a sensor protection shell, a display screen, a mounting shell and a mounting assembly, and is characterized in that heat generated by the mounting shell and the sensor protection shell is dissipated through a flat sheet membrane; ventilation is carried out through heat dissipation holes in a mounting plate, so that the electric appliance fire sensing alarm sensor adopts a lithium battery structure, dust can enter the heat dissipation holes and the interior of a flat sheet membrane during heat dissipation, filtering is carried out, and a flexible connection cover is slidably mounted on an operation panel, a sensor protection shell and a display screen through a folding cover; the flexible connection cover and the folding cover are folded and unfolded on the operation panel and the sensor protection shell for dust prevention and fire prevention, dust is prevented from entering the installation positions of the installation shell and the sensor protection shell, heat dissipation holes and a flat sheet membrane are prone to being exposed in a high-dust, lampblack or humid environment for a long time, and the flat sheet membrane can filter the dust and block and isolate the dust.

This invention discloses a tilt-sensing alarm sensor and its installation method, comprising multiple columns spaced along the boundary of a protected area, each column topped with a tilt-sensing alarm sensor. The tilt-sensing alarm sensor includes a fixed bracket, a sensing frame, and a sensor. The bottom ends of adjacent columns are connected by a lower crossbeam, and the tops of the columns are vertically connected to the base of the tilt-sensing alarm sensor. The mating portions of the tilt-sensing alarm sensors at the tops of adjacent columns are horizontally connected by an upper crossbeam. An anti-shearing net is installed within the frame formed by the upper and lower crossbeams and the two columns. Based on the tilt change of the anti-shearing net in the direction of gravity, the sensing frame and fixed bracket, which have a gap fit, generate a vertical force, which is sensed by the sensor. This invention improves anti-interference capability by optimizing sensor design, thereby reducing false alarms and missed alarms.

The utility model discloses an automatic feeding and early warning device for forming a piezoresistor blank, which comprises a feeding cylinder, a vacuum feeding cylinder, a storage cylinder, a vacuum pump, a feeding detection sensor, a low-position alarm sensor and a controller, and the side wall of the storage cylinder is provided with a first mounting hole and a second mounting hole; the first mounting hole is formed in the position close to a feeding port of the storage barrel, the second mounting hole is formed in the position close to a discharging port of the storage barrel, the feeding detection sensor is arranged in the first mounting hole, and the low-position alarm sensor is arranged in the second mounting hole. The detection head of the feeding detection sensor and the detection head of the low-position alarm sensor are both located in the storage barrel. The controller is arranged on one side outside the storage barrel, the feeding detection sensor and the low-position alarm sensor are both electrically connected with the control input end of the controller, and the vacuum pump and the electric discharging valve are both electrically connected with the control output end of the controller. The feeding detection sensor and the low-position alarm sensor are capacitive proximity switches.

This invention discloses a method, apparatus, storage medium, and electronic device for identifying the cause of a carbon monoxide alarm. The method includes: obtaining information about a target vehicle after it enters a mine; processing the target vehicle information to generate a first database table; a carbon monoxide alarm sensor in the mine generating alarm information; processing the alarm information to generate a second database table; obtaining the coordinates of the target vehicle within a preset alarm duration based on the alarm start time in the alarm information; determining whether the coordinates of the target vehicle and the sensor coordinates within the preset alarm duration are within a preset distance; if so, identifying the cause of the alarm information as a non-safety accident alarm; if not, identifying it as a safety accident alarm, and generating an alarm identification information table for both. This invention improves the accuracy of carbon monoxide alarm cause identification and enhances the timeliness of identifying non-safety accident carbon monoxide alarms.

The utility model discloses a commercial alarm sensor, and relates to the technical field of alarm sensors, the commercial alarm sensor comprises a housing, the main body of the housing is a structure with a one-way opening at the front end, a screw hole is arranged in the housing, and a fixing bolt is screwed in the screw hole. After impurities in external air are filtered through a flow gathering cover and a filter plate which are fixedly connected in a shell by starting an air suction pump installed on the outer side of an air suction pipe, the external air actively enters the interior of the smoke detector to be detected, and compared with traditional passive air suction, the air suction efficiency can be remarkably improved through the design; through the arrangement of the clamping groove and the sim card installed in the clamping groove, when the device is installed in a shopping mall, a network cable does not need to be additionally arranged for communication, the device can be rapidly installed at any position, and the device can be used without reserving the network cable in advance in the planning process of the shopping mall.

The application relates to the technical field of alarm devices, and particularly relates to an alarm device with an obstacle detection function, which comprises a mounting seat, an obstacle sensor, a cover shell and an alarm sensor. The obstacle sensor is mounted on the mounting seat. An airflow channel is formed between the cover shell and the mounting seat, and the airflow channel is in the detection area of the obstacle sensor. The alarm sensor is mounted on the cover shell and is arranged in the detection area of the obstacle sensor. The airflow channel provides a channel for the matter triggering the alarm sensor to reach the alarm sensor. In this way, the obstacle sensor and the alarm sensor are respectively mounted on the mounting seat and the cover shell, the alarm sensor and the airflow channel are arranged in the detection area of the obstacle sensor, the blind area of the obstacle sensor for detecting the environment obstacles of the alarm sensor is eliminated, the obstacle sensor can comprehensively monitor the environment obstacles of the alarm sensor, and the reliability of the alarm device is improved.

The utility model discloses an airplane fire alarm signal system detection circuit, which comprises a detection circuit, the detection circuit comprises a power plug, a main switch K1, a wave band change-over switch K2, a panel detection signal lamp and an inspection plug, the positive electrode end of the power plug is respectively connected with one end of the main switch K1 and one end of the wave band switch K2, and the negative electrode end of the power plug is connected with one end of the panel detection signal lamp; the other end of the main switch K1, the other end of the wave band switch K2 and the other end of the panel detection signal lamp are connected to a socket matched with a CH2 bolt on a fire alarm signal processing device HJ-1 on an airplane. The inspection plug is used for being connected with a CH1 bolt on a fire alarm signal processing device HJ-1 on an airplane. According to the utility model, the inspection plug simulates different ignition conditions of an engine compartment, so that not only can the good performance of the fire alarm signal processing device HJ-1 be detected, but also the fault position of the fire alarm sensor can be quickly judged, the fault position can be replaced in a targeted manner, and the maintenance efficiency is improved.

The present invention provides a test platform and method for the reaction time of infrared alarm and countermeasure equipment, belonging to the field of infrared alarm and countermeasure technology. The platform includes an electronic control system, a target simulation device connected thereto, and a product under test. The product under test is an infrared alarm and countermeasure device. Multiple sets of target simulation devices are circumferentially arranged in a sliding manner within the field of view of the product under test. The target simulation device can emit the medium-wave infrared light required by the infrared alarm sensor of the product under test, and can also capture the interference energy emitted by the product under test. The electronic control system synchronizes the time of the target simulation device and the product under test. The present invention solves the problem that traditional reaction time testing methods cannot automatically obtain each time stamp, and require manual playback of recorded images combined with timestamps to calculate and evaluate the reaction time, resulting in low reaction time acquisition accuracy.

1. Name of the product in this design: Brake Drum High Temperature Alarm Sensor. 2. Purpose of this design: To monitor the temperature of the brake drum and issue an alarm signal when the temperature is too high. 3. The key design features of this product are its overall shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention discloses a goaf sealing wall poisonous and harmful gas dissipation prevention device and a construction method. The goaf sealing wall poisonous and harmful gas dissipation prevention device comprises an inclined bottom plate arranged in a goaf, a sedimentation tank is installed at the end of the inclined bottom plate, a first groove is formed in one side of the sedimentation tank, and a U-shaped stainless steel pipe is installed in the first groove. According to the goaf sealing wall toxic and harmful gas dissipation prevention device, when the end opening of the U-shaped stainless steel pipe is exposed out of the water surface, the water level alarm sensor is triggered and sends out an early warning signal, and the gate valve is connected with the monitoring substation through the controller and used for controlling the water flow switch; when a water level alarm sensor gives an alarm, a gate valve can be started through a controller and a monitoring substation to prevent water from entering a second groove, it is ensured that water in the second groove is sufficient, and the problem that the water in the second groove is reduced, so that the water in a U-shaped stainless steel pipe is reduced, and the sealing effect is poor is solved.

The utility model discloses a glass detection and alarm integrated device based on multi-sensor feedback. The glass detection and alarm integrated device comprises a concave frame, a limiting plate and detection sensors, conveying wheels are arranged in the concave frame at equal intervals, and a motor is arranged at the position, located on one side of the conveying wheels, of the side edge of the concave frame; according to the utility model, the glass is in contact with the detection plate, if a bulge is uneven, the detection plate moves upwards, the detection plate drives the vertical rod connected to the top of the detection plate and the contact plate to move upwards, and when the contact plate moves upwards to be in contact with the alarm sensor, the alarm sensor is triggered, and the alarm sensor transmits an alarm signal out; the limiting plates are located at the tops of the conveying wheels and the inner sides of the concave frames, so that when glass is conveyed, the position of the glass can be strictly limited, and deviation is prevented; the detection sensor detects that the glass is abnormal or the surface of the glass protrudes and is uneven, so that the detection plate moves upwards, and a worker is reminded of abnormal glass detection in time in a sound and vision dual mode.

The invention provides a hydraulic jacking preventer, and relates to the technical field of oil and gas field well equipment. The blowout prevention shell is formed by folding an upper blowout prevention shell body and a lower blowout prevention shell body, and the two ends of the two blowout prevention shell bodies are sleeved with end sealing covers respectively. A drilling tool penetrates through the middle of the blowout prevention shell, a shaft is arranged on an end sealing cover on the periphery of the drilling tool in a vertical outward extending mode, and the shaft located on the lower portion is embedded into a producing well. Through the hydraulic drive mechanism triggered by the alarm sensor and driven by the high-pressure oil pump, top-speed response and action of the device are achieved. After an alarm signal is received, the high-pressure oil pump can be instantly started in the forward direction, high-pressure oil is injected into the hydraulic cylinder through the oil inlet pipe, the hydraulic piston disc and the hydraulic piston rod are driven to be linearly pushed inwards, power is transmitted to the interlocking sealing mechanism without delay, and therefore sealing action is started at the initial stage of blowout, and sealing is achieved. And precious time is won for dangerous case control.

The invention discloses a telegraph pole erecting machine, belongs to the technical field of pole erecting machines, and solves the technical problem that an existing pole erecting machine is poor in intelligence. The device comprises a boarding platform, a swing mechanism, a frame and a track driving system, the boarding platform is provided with a movable arm, the movable arm is provided with a bucket rod, a plurality of all-round cameras are arranged around the boarding platform, the bottom of the bucket rod is provided with an operation auxiliary camera and a laser distance measuring sensor, and the side wall of the bucket rod is provided with a near-electricity alarm. An instability alarm sensor, a look-around monitor and an operation auxiliary video monitor are arranged in a cab of the upper vehicle platform, an ultrasonic environment detection sensor is arranged at the top of the cab, a quick change device used for being connected with an accessory is arranged at one end of the bucket rod, and a bucket oil cylinder driving the quick change device to turn up and down is arranged at the top of the bucket rod. A counterweight device is arranged at the rear end of the getting-on platform, and a central controller ECU of the getting-on platform is in signal connection with a laser distance measuring sensor, an electricity approaching alarm, an instability alarm sensor and an ultrasonic environment detection sensor.

The present invention relates to the technical field of alarm devices and discloses a building monitoring and management system based on the Internet of Things. The system comprises: when an alarm sensor generates an early warning signal, a circumstantial evidence confirmation module captures power grid harmonic data and compares it with a benign equipment feature library, and decides whether to trigger an alarm based on the matching result. The present invention fundamentally distinguishes between real fire conditions and equipment operation interference through a time-series mutual verification mechanism between power grid harmonics and alarm signals, significantly improving alarm accuracy. At the same time, the difference in multi-branch harmonic intensity is used to achieve passive positioning, eliminating the risk of false suppression in large buildings, and monitoring the health status of equipment through the harmonic entropy change trend, forming a complete safety closed loop from early warning to prevention.