2238 results about "Buzzer" patented technology

An electrocardiography monitor is provided. A sealed housing includes one end wider than an opposite end of the sealed housing. Electronic circuitry is provided within the sealed housing. The electronic circuitry includes an electrographic front end circuit to sense electrocardiographic signals and a micro-controller interfaced to the electrocardiographic front end circuit to sample the electrocardiographic signals. A buzzer within the housing outputs feedback to a wearer of the sealed housing.

The invention belongs to the field of safety technology monitoring, and particularly relates to an electrical cabinet safety monitoring method and system. The temperature, the voltage and the current of the electrical cabinet are monitored in real time through the sensors, and data are transmitted to the information management system in the computer through the base station to be processed. An information processing system is arranged in the information management system, the information processing system has a preliminary fault judgment capability through an expert system, a model of the information processing system is trained through data transmitted by a sensor, and data belonging to faults complements the information processing system to serve as historical monitoring data. The real-time monitoring data is compared with historical monitoring data in a database so as to judge whether the electrical cabinet breaks down or not, and if the electrical cabinet breaks down, a buzzer of the calculator gives an alarm. In the practical application, the electrical cabinet is monitored in real time through the sensor, a worker is reminded of the failure of the electrical cabinet through the buzzer, the worker does not need to go to the electrical cabinet site to inspect, and manpower is greatly saved.

The invention relates to the technical field of fire alarm, and discloses a self-adaptive threshold fire-fighting buzzer alarm method and system based on fuzzy logic, and the method comprises the following steps: S1, environment data collection; s2, data preprocessing; s3, performing fuzzy processing; s4, performing fuzzy reasoning and alarm threshold calculation; s5, optimizing an alarm threshold value; s6, real-time feedback and dynamic adjustment: according to the real-time fire suppression result and the environment change data, adjusting an alarm threshold to form a dynamic feedback mechanism; s7, applying a fire propagation model; and S8, alarm execution. By adopting distributed data storage, redundant backup, encryption technology and automatic data management, efficient and safe data processing, reliable data recovery and accurate alarm decision are realized, and the response speed and stability of the system are improved.

The invention belongs to the technical field of manufacturing of special equipment for the electronic industry, and particularly relates to an automatic chip mounter for a surface-mounted buzzer, which comprises a machine table, a working table is arranged at the upper end of the machine table, a three-axis industrial manipulator is arranged on the working table, a chip mounting head is arranged on the three-axis industrial manipulator, and a transfer mechanism is arranged below the three-axis industrial manipulator. A material storage cup is arranged in front of the transfer mechanism, the material storage cup is connected with a material carrying block in a sliding mode, an air cylinder used for driving the material carrying block is fixedly installed on the workbench, the transfer mechanism comprises a fixing column, the fixing column is fixedly installed on the workbench, and a transfer disc is rotatably installed on the fixing column. According to the device, a worker can place the next group of dies in the group of material placing frames at the material placing point position and take down the dies after surface mounting processing from the corresponding material placing frames, so that surface mounting and material taking and placing are carried out at the same time, the material taking and placing time is saved, and the surface mounting processing efficiency of the surface mounting type buzzer is improved.

The storage tank with the alarm mechanism comprises a storage tank body and a connecting pipe connected to the upper end of the storage tank body, and further comprises an air detector, a fixing frame is fixedly connected to the position, located on the outer side of the connecting pipe, of the upper end of the storage tank body, and an annular sliding groove is formed in the inner wall of the fixing frame in a surrounding mode. A rotating ring block is rotationally connected to the inner wall of the annular sliding groove, a motor for driving the rotating ring block to rotate along the annular sliding groove is fixedly connected to the outer side of the fixing frame, a rotating disc is fixedly connected to the power end of the motor, clamping teeth meshed with each other are evenly arranged on the outer wall of the rotating disc and the outer wall of the rotating ring block, and the air detector is fixedly connected to the upper end of the rotating ring block. The air detector is arranged on the outer side of the connecting position of the storage tank body and the connecting pipe in a surrounding mode, gas leakage at the connecting position can be detected in time, alarm processing is achieved in cooperation with the PLC and a buzzer in the control panel, and safety accidents caused by untimely leakage processing are avoided.

The invention provides a multi-source information fusion intelligent rehabilitation glove system. A main control unit of the system is used for coordinating and controlling all parts of rehabilitation gloves; the charging interface charges the battery; the control panel provides an interactive interface between a user and the system; the servo linear motor is used for controlling movement and position feedback of the rehabilitation glove; the battery supplies power to the system; the LED lamp is used for visual stimulation; the buzzer is used for audio stimulation; the low-frequency electrical stimulation interface is used for electrical stimulation; the multi-source fusion control module is used for monitoring a pressure signal and a muscle activity potential signal of the glove and controlling the movement and strength of the glove in real time; and wireless communication is used for data transmission and remote monitoring. By integrating multi-source information sensory stimulation, the rehabilitation process is enhanced, and particularly, the rehabilitation of damaged nerves is facilitated. Secondly, the multi-source information fusion control module monitors and adjusts hand movement and muscle movement of the patient in real time through a pressure sensor and a myoelectricity sensor, and personalized rehabilitation support is provided.

The invention relates to the technical field of garbage cans, and discloses an intelligent mobile garbage can with voice control and remote control functions and a control method thereof.The intelligent mobile garbage can comprises a garbage can body, a can cover is installed on the top of the garbage can body, and an annular microphone array is installed on the front side of the garbage can body; the garbage can comprises a garbage can body, a TOF camera is installed on the front side of the garbage can body, an ultrasonic sensor is installed outside the garbage can body, a buzzer alarm is installed on the left side of the garbage can body, and a magnetic type charging contact is installed at the bottom of the garbage can body. According to the invention, the sound source orientation precision of + / -5 degrees is realized through the annular microphone array + TDOA algorithm, the instruction recognition rate of 92% or above is still kept in a noise environment in combination with the DPRNN model, the false triggering probability is remarkably reduced, dual identity verification: voiceprint comparison and off-line / on-line instruction analysis dual verification is carried out, illegal user control or pet false triggering is prevented, and the safety of a pet is improved. And the safety is improved by more than 80%.

The invention relates to the technical field of buzzer manufacturing, in particular to a buzzer continuous full-automatic wire welding mechanism which comprises a base, a hollow shaft motor is arranged in the center of the base, and a rotating disc station mechanism is fixedly installed on a hollow shaft of the hollow shaft motor. A supporting disc is fixedly installed at the position, located at the axis of a hollow shaft of the hollow shaft motor, of the base through a supporting base, a feeding mechanism and a discharging mechanism which are perpendicular to each other are arranged at the top end of the base around the outer ring of the rotary disc station mechanism, and an empty disc mechanical arm is arranged between the feeding mechanism and the discharging mechanism. A guide mechanism, a wire stroking mechanism, two sets of wire welding mechanisms and a steering mechanism are sequentially arranged between the feeding mechanism and the discharging mechanism in the rotating direction of the rotating disc station mechanism, and the problem that in the buzzer manufacturing process, a traditional wire welding technology mainly depends on manual operation, and the production efficiency is high is solved. The production efficiency is low, and the welding quality is unstable.

There is disclosed a modular sensory platform for generating an experience for a guest on the platform located on an event floor of a venue. At least one deck module may each include a frame with a bottom side for mounting to the event floor, a side edge bordering the frame, and a standing surface opposite the bottom for supporting the guest. Lift actuators may be positioned along the side edge or under the deck for changing a distance between the event floor and the standing surface according to a lift signal. One or more sensory stimuli each receivable of a stimulus signal may be mounted to the frame and include at least one of a vibration buzzer, a low-frequency transducer, smoke effects, a heater, a water spritzer, air and scent lines, an air blaster and scent emission, a haptic device, fiber optic lighting, LED lighting, and a fog unit.

The invention discloses a TBOX offline detection system, and relates to the technical field of offline detection. The feedback states of the five groups of indicator lamps are controlled through an ECU, namely, a light 3 is lightened after binding succeeds, a light 5 is lightened after remote shutdown, a light t1 is lightened after first-stage vehicle locking and 2V is displayed by a universal meter, and a light t1 and a light t2 are lightened after second-stage vehicle locking and 0V is displayed; the 279 ECU simulates a vehicle control unit, virtual vehicle number binding and unbinding are input through the cloud platform, and a relay is controlled to switch a power supply. When a vehicle is searched, the buzzer responds, and the rack integrates all the modules to realize physical connection and operation. The detection includes connection initialization, function detection, fault simulation and data storage, and efficiency and accuracy are improved. According to the invention, the detection efficiency is improved through the fast-plug wire harness and an automatic instruction, and the time consumed by a single machine is shortened to 15 minutes or less; errors are reduced through voltage simulation and acousto-optic feedback, and the fault omission ratio is reduced; the real-time evidence storage of the cloud platform ensures the data traceability, supports multi-dimensional retrieval and report generation, solves the problems of low efficiency, large error and difficult traceability of the traditional scheme, and improves the detection reliability and standardization level.

The invention, which relates to the technical field of monitoring and early warning, discloses a comprehensive monitoring and early warning system and method for fire leaving in a kitchen, and the system comprises a scene sensing module, a preliminary analysis module, a data decision module and an emergency processing module. The scene sensing module is integrated with a camera, a smoke sensor and a gas sensor, and acquired image information, gas concentration and smoke index are transmitted to the preliminary analysis module; face and human body behavior recognition is carried out by adopting a deep learning model, the state of a kitchen fire source is monitored in real time by utilizing a flame state recognition technology, and in a normal state, the system does not intervene and only carries out low-power-consumption monitoring; when temperature abnormity or gas leakage occurs, the system enters an early warning mode, a buzzer alarm device is triggered to prompt a user, emergency disposal is carried out when necessary, timely response can be carried out according to different fire risks, and accidents are reduced.

The invention relates to the technical field of medical instruments, and discloses a flexible ureteroscope sheath device and a pressure control method thereof.The flexible ureteroscope sheath device is characterized in that one end of a connector tube seat is connected with a sheath tube, the other end of the connector tube seat is provided with three connectors, the first connector is connected with a pressure relief device and a control device, the second connector is used for a flexible ureteroscope and perfusion, and the third connector is used for negative pressure suction; a central channel is arranged in the sheathing canal, and passage type pressure measuring sensors are axially and uniformly arranged around the channel; the control device comprises an adjusting key, a digital display, an indicating lamp and a buzzer, and is electrically connected with the pressure measuring sensor and the pressure relief device; the control device comprises an automatic pressure relief module which is used for collecting analog voltage signals and converting the analog voltage signals into pressure data values, and when a detection value reaches a set threshold value, the electric control pressure relief device automatically relieves pressure. According to the invention, real-time and continuous detection and control of the pressure in the cavity are realized.

The invention relates to a high-damping shock-absorption anti-collision waste tire ecological retaining wall and an accident alarm system thereof. Staged energy absorption and impact force dissipation are achieved through a three-stage energy dissipation damping structure. A first-stage damping module conducts elastic deformation and friction absorption kinetic energy through waste tires filled with ceramsite. The secondary damping module is further compressed and deformed by a spiral spring group and ceramsite so as to dissipate impact force; the three-stage module disperses residual stress through geometric deformation of a coupling structure of a U-shaped damper and ceramsite, the impact resistance is remarkably improved, and the counter-acting force to a vehicle is reduced. An intelligent monitoring and early warning system powered by solar energy is integrated, the system comprises the thin film array pressure sensor, the buzzer alarm and the wireless communication module, collision data can be collected in real time, the buzzer alarm is triggered when abnormal pressure is detected, and rear-end collision accidents are effectively reduced. Vine plants can be planted in the retaining wall, the water retention characteristic of ceramsite is combined, the greening function is achieved, and the ecological environmental protection effect is enhanced.

The present invention discloses an automatic fault alarm device for a distribution transformer, including a pressure chamber and a buzzer assembly, wherein a mounting frame is fixedly connected above the pressure chamber, and an alarm assembly for flashing a warning light when a transformer fails is provided below the mounting frame. The present invention uses components such as a buzzer assembly, a temperature sensor, and a pressure tank. When the temperature inside the transformer reaches a certain value, the temperature sensor supplies power to a piezoelectric ceramic sheet through an electric wire. Under the action of the piezoelectric ceramic sheet, a sounding shell generates a sound alarm to alert patrol personnel. At the same time, the inside of the transformer is cooled and oxygen is isolated, thereby eliminating fire hazards, reducing safety risks before maintenance personnel arrive, and avoiding continuous high temperature or open flames in the transformer, which increases safety risks. At the same time, corresponding alarm measures are automatically taken when the fault condition just occurs, extending the alarm time forward and further reducing the risk of fault deterioration.

The utility model relates to the field of sluice foundation detection, and discloses a sluice foundation subsidence displacement observation device which comprises a base, a stand column fixed in the middle of the top of the base, scale marks engraved on the side wall of the stand column, a connecting seat sleeved on the side wall of the stand column, a pointer fixed at one end of the top of the connecting seat close to the scale marks, and a circular seat fixed at the top end of the stand column. A buzzer is fixed to the top of the circular base, monitoring mechanisms are arranged at the two symmetrical ends of the bottom of the circular base, a transparent protective cover is fixed to the top of the connecting base, a monitoring camera is arranged in the transparent protective cover, and the monitoring camera and the connecting base are fixed. According to the utility model, through the combination of the monitoring mechanism and the monitoring camera, the real-time monitoring of the settlement condition of the sluice base can be realized, continuous image data can be provided, the settlement height of the foundation can be analyzed and recorded conveniently, and when the settlement of the base exceeds a set threshold value, the buzzer gives an alarm sound to remind related personnel to take measures in time, so that the working efficiency is improved. The safety is ensured.

The embodiment of the invention provides a display module and electronic equipment, relates to the technical field of intelligent wearing, and is used for solving the problem that the size of the electronic equipment is relatively large. In the display module, a supporting sheet is arranged on the back surface of a display screen, and the supporting sheet is connected with the display screen. The piezoelectric vibration piece is connected with the surface, away from the display screen, of the supporting piece. The vertical projection of the piezoelectric vibration piece on the back face of the display screen is located in the vertical projection range of the supporting piece on the back face of the display screen. And the piezoelectric vibrating reed drives the display screen to vibrate to realize screen sounding, so that the functions of sounding devices such as a loudspeaker, a buzzer and a sonar module can be realized. Sound production devices such as a loudspeaker, a buzzer and a sonar module do not need to be arranged in the electronic equipment, and the internal space of the electronic equipment can be saved.

A heater is provided, including: a heater body and a driving controller; the heater body includes: a heating stick and a temperature probe; the driving controller includes a controller housing and a control circuit board; the control circuit board includes: an input protection module; a rectification and filtering module connected to the input protection module; a power conversion module connected to the rectification and filtering module; a 5V output module connected to the power conversion module; a main control module connected to the 5V output module; a touch function module, an on-off control module, a temperature detection module, a temperature display module, an indicator light module, and a buzzer module which are respectively connected to the main control module.

The invention discloses a cable warning pile and method for monitoring the state of an intermediate joint of a directly-buried power cable, relates to the field of state monitoring of power equipment in power engineering, and aims to solve the problems of single-parameter acquisition, large interference influence, non-objective evaluation and non-visual early warning in the existing monitoring technology. The warning pile is vertically buried at the position 0.3-0.8 m above a connector, temperature, partial discharge, vibration and environment data are synchronously collected through multiple sensors such as an optical fiber temperature sensor and a high-frequency current transformer, after data alignment, abnormal value elimination, filtering and integral preprocessing, the real temperature of the connector is restored through an environment and vibration coupling correction model, and the real temperature of the connector is obtained. And extracting a partial discharge peak factor and an average discharge capacity core characteristic. An index weight is determined based on an entropy weight method to construct a health degree evaluation model, operation states are divided into normal, attention, early warning and fault classes, hierarchical visual warning is realized through a three-color indicating lamp group and a buzzer, and the model is dynamically updated in combination with maintenance data every three months.

The invention relates to the technical field of sound production instruments, and provides a patch type buzzer, which adopts a double-layer circuit board structure, a second circuit board is provided with a conversion element, and the conversion element and an electric appliance element on the second circuit board form a direct current-alternating current conversion circuit for converting direct current into alternating current. When the second circuit board and the first power connection board are stacked up and down, the conversion element is limited on the conversion element receding groove, so that the second circuit board abuts against the first power connection board, and when the buzzer adopts single-frequency sound production, the size of the buzzer can be designed to be smaller, and the buzzer can be more compact. When the volume of the buzzer is the same as that of a buzzer in the prior art, the internal space of the buzzer is relatively increased due to the fact that the second circuit board abuts against the first power connection board, and multi-frequency sound can be made.

The invention discloses an industrial vehicle intelligent instrument control system and method based on multi-mode biological recognition, and the method comprises the following steps: S1, collecting fingerprint data of a driver, and carrying out the preprocessing; s2, fingerprint texture features are extracted, and weighted coding is carried out on local texture distribution and a global topological structure; s3, constructing an identity verification window, and performing bidirectional attention comparison on the fingerprint feature vector and the fingerprint template; s4, judging whether the identity verification is passed or not according to the similarity score, and if the verification is passed, triggering a buzzer or a voice broadcast device to generate control feedback; s5, starting the vehicle, awakening display, loading an instrument information page, and writing an identity verification result into a system buffer area; and S6, synchronizing an identity verification result to a mobile terminal APP or an applet platform through the Bluetooth MCU chip. According to the invention, industrial vehicle intelligent control based on fingerprint identification is realized, and the identity verification accuracy, the operation safety and the management efficiency are improved.

The utility model discloses an intervention alarm type pressurized infusion bag which comprises a pressurized bag body, one end of the pressurized bag body is communicated with a connecting hose in a penetrating mode, the other end of the connecting hose is provided with an inflatable air bag, the connecting hose is provided with a three-way valve, and the other end of the pressurized bag body is provided with a connecting piece. The annular rotating piece is arranged at the rear end of the pressure gauge and can rotate along with the pointer, under the interaction of the positioning columns, when the pressurizing bag is inflated, the pressure reaches 300 mmhg, the switch is turned on, the buzzer does not sound, lavage continues during operation, the pressure drops, and when the pressure drops to 250 mmhg, the annular rotating piece can rotate along with the pointer. The first contact switch is connected with the third contact switch, the buzzer gives an alarm to prompt that the pressurized infusion bag needs to be pressurized, after pressurization, the first contact switch is disconnected with the third contact switch, the buzzer circuit is disconnected, the buzzer stops giving an alarm, and the pressure alarm function of the whole infusion bag is achieved.

The invention discloses a method for non-destructively identifying the gender of a transformed young duck egg based on a singing tube nuclear magnetic image, and belongs to the technical field of poultry egg detection.The method comprises the steps that a low-field nuclear magnetic resonance technology is utilized, a breeding duck egg is positioned in a nuclear magnetic system, the optimal imaging section of a singing tube is determined, an image is collected and preprocessed, and a high-quality singing tube nuclear magnetic image is obtained; and through analyzing relaxation characteristics, inverting nuclear magnetic signals to identify a buzzer tube structure and extracting characteristics, finally constructing a gender decision-making model, and combining physical constraints to obtain a gender discrimination result as a sorting reference. According to the method, lossless, early-stage and high-accuracy sex identification is realized through a special imaging technology and algorithm by utilizing sex difference nuclear magnetic characteristics of a singing tube structure, hatching and breeding strategies can be optimized in laying duck and meat duck breeding, and intelligent development of the industry is promoted.

The pump head with the filter screen blocking early warning structure comprises a pump head body and a filter screen, a mounting hole is formed in one side of a water outlet of the pump head, a mounting cylinder is arranged at the position, corresponding to the mounting hole, of the outer surface of the water outlet of the pump head, the inner diameter of the mounting cylinder is larger than the diameter of the mounting hole, and a sealing assembly is arranged in the mounting cylinder; a cap is detachably mounted at one end of the mounting cylinder, an elastic part is arranged between the sealing assembly and the cap, a pressure sensor is arranged on the cap, a buzzer is arranged outside the mounting cylinder, and the pressure sensor is in control connection with the buzzer; in an initial state, the sealing assembly seals the mounting hole; and when the pressure in the water outlet of the pump head rises and exceeds a set value, the sealing assembly is far away from the mounting hole and triggers the pressure sensor. Whether the filter screen is blocked or not is judged by monitoring the pressure change of the water outlet, an alarm sound is given out through the buzzer for early warning when blockage occurs, and the problem that the applicability of the filter screen is affected due to the fact that an early warning mechanism is not sensitive or accurate enough under different working conditions is solved.

The invention discloses a wake-up response method based on linkage of a Beidou short message and emergency broadcast, and relates to the technical field of emergency communication and disaster early warning, and the method comprises the following steps: generating early warning information, and transmitting the early warning information to an early warning terminal; displaying early warning content and triggering a buzzer to give an alarm; if the terminal does not confirm the response within the preset time, the response is spread in a broadcast mode; if the terminal does not confirm the response again, an SOS alarm key is automatically activated, Beidou positioning is started, and the real-time position is reported to a back-end management platform; and the back-end management platform performs resource scheduling, coordinates rescue strength, tracks each response process and generates a response chain. By integrating Beidou short message communication, emergency broadcast, SOS alarm and positioning tracking technologies, a multi-level and all-around disaster early warning and response system is formed, early warning information can be quickly transmitted, and people in a disaster area can be forcibly awakened; and personnel can be ensured to obtain timely and effective rescue information and response guidance when a disaster occurs.

A heater is provided, including: a heater body and a driving controller; the heater body includes: a heating stick and a temperature probe; the driving controller includes a controller housing and a control circuit board; the control circuit board includes: an input protection module; a rectification and filtering module connected to the input protection module; a power conversion module connected to the rectification and filtering module; a 5V output module connected to the power conversion module; a main control module connected to the 5V output module; a touch function module, an on-off control module, a temperature detection module, a temperature display module, an indicator light module, and a buzzer module which are respectively connected to the main control module.

The utility model relates to the technical field of underground water level measuring devices, and discloses an underground water level ruler suitable for various wellhead conditions, which comprises a support main body, a control panel is mounted on one side of the support main body, and a switch, an indicator light, a voltmeter, a buzzer, a battery compartment and a handle are arranged on one side of the control panel. According to the underground water level gauge suitable for various wellhead conditions, the limiting rod is pulled to move outwards until the limiting rod is separated from the interior of the limiting hole, fixing of the connecting ring is relieved, balance weight devices of different shapes can be selected and used according to the field wellhead conditions, and even if the water level gauge body is clamped in field measurement, the water level gauge body can be conveniently used. When the bearing threshold value of the connecting ring is exceeded, the water gauge main body can also be pulled out, the water gauge main body is a steel bendable ruler, water level measurement work can be continued by replacing a proper balancing weight on site, the field actual working efficiency is effectively improved, and the working cost is reduced.

The invention provides a fatigue driving detection method integrating multiple detection methods, which comprises the following steps of: acquiring a skin electric signal of a driver based on a physiological signal detection module, and detecting an eye state of the driver in real time based on a facial image recognition module; the driving behavior analysis module is used for collecting vehicle driving parameters and continuous driving time of a driver, the data fusion processing module is used for receiving and comprehensively analyzing data of the modules, the fatigue state of the driver is evaluated, and the fatigue early warning module is used for sending out an early warning signal when detecting the fatigue state of the driver. The fatigue driving detection method and the fatigue driving early warning module are combined, so that when it is detected that the driver is in the fatigue driving state, the method can give an alarm in time through the buzzer to enable the driver to be sober for a short time and remind the driver to have a rest in time, the fatigue driving phenomenon is effectively reduced, and the driving safety is improved.

The utility model discloses a water hammer detection V-shaped ball valve, belongs to the technical field of ball valves, and solves the problem that specific detection needs to be carried out aiming at the situation that a water hammer phenomenon still occurs due to closing of a ball body in the V-shaped ball valve. Comprising a valve body, a water hammer detection circuit arranged on the valve body, a switch circuit coupled with the water hammer detection circuit and a buzzer coupled with the switch circuit, and the water hammer detection circuit is used for collecting the flow change in the valve body and collecting the vibration condition of the valve body to judge the result and control the switch circuit. The switching circuit is used for controlling the buzzer to be powered on and powered off according to the judgment result of the water hammer detection circuit. The flow sensor detects the flow of the outlet of the valve body, feeds back signals to the voltage comparison circuit, judges the flow change through delay signals, determines the water hammer phenomenon, triggers the 555 timing chip, controls the buzzer to give an alarm and reminds maintenance by combining the signals of the vibration sensor.

The invention relates to the technical field of geological disaster early warning, in particular to collapse geological disaster automatic monitoring and early warning equipment which comprises a supporting table, a baffle is rotationally connected to one side of the upper wall of the supporting table, the other side of the upper wall of the supporting table is elastically connected with the other side of the baffle through a spring, and a limiting plate is attached to the lower wall of the baffle. According to the automatic monitoring and early warning equipment for the collapse geological disasters, a side pressing plate is arranged in a knocking plate arranged below a knocking head, a buzzer, the knocking head and the knocking plate are electrically connected, the positive electrode and the negative electrode of the buzzer are connected with the knocking head and the knocking plate correspondingly, and the side pressing plate and the buzzer are electrically connected. When the knocking head is in contact with the knocking plate, the buzzer, the knocking head and the knocking plate form a closed loop, so that the buzzer starts to work to carry out early warning on the landslide, and since the monitoring sensitivity of the monitoring device is difficult to adjust accurately and early warning cannot be carried out in time when the sensitivity is too high or too low, errors of measured data are avoided.

The invention provides a control system for simulating real-time propeller blade attitude motion, which comprises a test bench, an electric control cabinet and a control board which are interconnected through a CAN (Controller Area Network) bus, the test bench comprises a power motor, a variable pitch motor, a position encoder, a tension sensor and a proximity switch; the electric control cabinet comprises a PLC (Programmable Logic Controller); a power supply and a motor driver; the console comprises a control handle, a control switch, a buzzer, an indicating lamp and a PC terminal display interface. According to the invention, through dual-mode cooperative control of the power motor and the variable pitch motor, dominant control variables can be switched according to a test scene, the strong coupling problem of torque-rotating speed-pitch angle in a dynamic simulation test of the propeller is solved, and a solution is provided for real-time dynamic simulation of the variable pitch propeller.