1495 results about "Buzzer" patented technology

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%.

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 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 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 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 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 invention discloses an integrated abnormal signal detection system for a fuel cell vehicle, and the system comprises a sensor module which collects and outputs the pressure, temperature and hydrogen concentration data of a fuel cell system in real time; the detection module receives data of the sensor module, compares the data with a preset threshold value and outputs an abnormal signal to the main control system; the main control system triggers the sound-light alarm system according to the abnormal signal and sends the fault data to the vehicle-mounted controller; the sound-light alarm system responds to an instruction of the main control system to execute buzzer alarm and LED light alarm; the vehicle-mounted controller is used for controlling the front-end switch valve according to the fault data so as to adjust the pressure or the temperature; the power supply input module supplies power to all the modules of the system; and the power supply conversion module is used for converting the power supply input voltage into working voltage required by the detection module and the main control system. The system effectively solves the problems of insufficient power supply protection, signal distortion and alarm delay of a traditional system, and has the advantages of improving power supply reliability, guaranteeing signal integrity and realizing emergency response timeliness.

The invention relates to the technical field of new energy automobile high-voltage wiring harness production detection, in particular to a high-voltage wiring harness part assembly detection system and a control method, and the system comprises a sensing layer, a control layer and an execution layer, the sensing layer comprises a visual recognition module, a laser ranging module and a pressure feedback module; the visual identification module comprises an industrial camera and an annular light source, the laser ranging module comprises a laser ranging sensor, the pressure feedback module comprises a pressure sensor, the control layer comprises an industrial controller and a feature database, the industrial controller is in signal connection with the feature database, and the execution layer comprises an indicator lamp, a buzzer, a pneumatic clamp lock and a conveying belt. And the indicating lamp, the buzzer, the pneumatic clamp lock and the conveyor belt are all in signal connection with the industrial controller. The problems of neglected loading and disqualification of the high-voltage wire harness in the assembling process at the present stage, low manual visual inspection efficiency and limitation of a single detection means at present are solved.

The invention discloses a multi-mode home-based care health monitoring method and system based on voice interaction suitable for aging, and belongs to the technical field of smart care and health monitoring. According to the system, physiological data of an intelligent ring (M1), behavior data of a home environment sensor (M2) and equipment state monitoring information are fused, wherein the behavior data comprise a water / electricity / gas meter and an emergency pager which are wirelessly transmitted by zigbee, a button type noctilucent coating is larger than or equal to 0.5 mm, and buzzing is 60-70 dB after triggering. And a health management closed loop without APP operation is realized through aging-suitable voice interaction (supporting more than eight dialects and wake-up word custom). The core method comprises multi-source data acquisition, six-dimensional health assessment, multi-dimensional risk grading and grading service response, the problems of single data, insufficient aging adaptability, service disjunction and the like of existing equipment are solved, the high-risk identification accuracy rate reaches 93%, the emergency call response time is shorter than 90 seconds, and the method is suitable for home-based care scenes of old people living alone or both, and has a wide application prospect. And the monitoring safety and convenience are obviously improved.

The invention relates to an electric leakage alarm method and device for a resident end, equipment and a medium. The method comprises the following steps: acquiring a leakage current signal, performing low-pass filtering processing on the leakage current signal, and then calculating a leakage current effective value; dynamically calculating an alarm threshold according to the environment parameter information; the leakage current effective value is compared with an alarm threshold value, grading event judgment is carried out according to a comparison result and waveform characteristic parameters of the leakage current signal, and an alarm trigger mark is generated; according to the alarm triggering mark, generating an alarm instruction to execute at least one of the following response actions: driving a piezoelectric buzzer and an LED to generate a sound-light alarm signal; and generating alarm information according to the alarm triggering mark, and uploading the alarm information to a monitoring platform. According to the method, through leakage current signal filtering processing, dynamic alarm threshold calculation and a grading alarm mechanism, the accuracy and environmental adaptability of electric leakage detection in a residential electricity consumption scene are improved, and the intelligent level of electricity consumption safety monitoring is improved.

The utility model discloses an avionics control system for a small sounding rocket, and the system comprises a power voltage stabilizing circuit and an STM32 microprocessor. The STM32 microprocessor is respectively connected with the MOS tube switching circuit, the emission level reading module, the buzzer driving circuit, the steering engine driving circuit, the height sensor BMP280 driving circuit, the six-axis acceleration sensor MPU6050 driving circuit and the storage module W25Q64 driving circuit; the system can quickly, simply and conveniently complete flight data acquisition and attitude control of the rocket, is simple in structure and convenient to operate, has high integration level, high flexibility and stable attitude control and data acquisition and storage capabilities, is suitable for diversified experiment requirements, greatly simplifies the rocket control process, reduces the dependence on the experiment environment, and improves the experiment efficiency. The method is suitable for various engineering education and scientific research scenes, and the application value of the small sounding rocket in teaching and scientific research is improved.

The invention discloses multi-wire harness stranding equipment based on copper-clad steel stranded wire processing, and relates to the technical field of wire harness stranding equipment, based on the basic stranding principle of conventional sub-wires and buses, firstly, the wire conduction process of sub-wires ZX is improved by three wing plates, and secondly, secondary optimization is performed on the stranding process of the sub-wires ZX relative to a bus MX, so that the wire conduction process of the sub-wires ZX relative to the bus MX is optimized. The method is essentially characterized in that a three-item wing plate is used as a ZX line conduction construction platform on the basis, the tension change in the ZX line conduction process is used as the basis, the ZX line conduction process is sensed in real time through the tension-hydraulic-electric conversion process, and an alarm signal is sent out through a buzzer; the purpose of the invention is to master the conduction strength of ZX in real time so as to monitor the whole stranding process, avoid the influence on the production efficiency of the whole wire due to the fact that abnormal problems are not found in time, and then perform'strengthening 'treatment on the stranding process between the ZX and the MX by using the wire pressing sleeve without interfering with the stranding process.

The utility model discloses a mould guide pillar for reducing impact force, which relates to the technical field of mould guide pillars and comprises a guide sleeve, a guide pillar and a buffer component, the buffer component comprises a mounting seat, one end of the guide pillar is provided with a mounting groove, and two sides of the mounting seat are respectively provided with a first decompression air bag and a second decompression air bag. According to the die guide pillar capable of reducing the impact force, the impact force between the guide sleeve and the guide pillar is reduced through the pressed deformation of the first pressure reduction air bag, part of air can enter the second pressure reduction air bag through the air inlet pipe when the first pressure reduction air bag deforms, and the first pressure reduction air bag is prevented from being broken due to excessive pressure; a second pressure reducing spring is arranged to cooperate with a second pressing plate to further reduce impact force; the first induction reed is arranged to be matched with the second induction reed, when the spring is aged to a certain degree, the compression stroke is shortened, and the first induction reed makes contact with the second induction reed to enable the buzzer to give an alarm to prompt an operator to overhaul and replace the spring.

The utility model provides a rail shielding door pressure sensing emergency device, a spring compression contact is installed on a reset spring, the spring compression contact is connected with a pressure sensor so as to detect pressure generated by a person or object clamping event, the pressure sensor is electrically connected with an electric signal conversion system, and the electric signal conversion system is connected with the reset spring. A physical pressure signal of the pressure sensor is converted into an electric signal, the buzzer gives an alarm to receive the electric signal and gives a sound alarm when abnormal pressure is detected, and meanwhile the door control unit DCU receives the electric signal and controls opening and closing of the shielding door according to the signal. The rail shielding door pressure sensing emergency device provides a scheme which is reliable, timely in feedback and rapid in emergency response.

The invention relates to the technical field of signboards, and discloses a signboard for an electric power industry place, which comprises a mounting plate, an identification plate and a support plate, in the signboard, a surrounding alternating electric field is coupled with a panel induction electrode in an induction probe to form a weak alternating voltage signal; after the signal is processed by the signal amplifier, the filter and the signal conversion chip, the singlechip controls the buzzer and the lamp strip according to the processed signal; photosensitive sensors at four corners of the solar panel monitor angles with sunlight, a hollow shaft rotates to adjust the horizontal direction of the solar panel, and a rotating shaft rotates to adjust the vertical direction; during maintenance, sleeves symmetrically installed on the identification plate are pressed, the clamping blocks clamp the second circular truncated cones to move along the sliding rods to make contact with the first circular truncated cones, when the clamping blocks cross the attaching positions of the first circular truncated cones and the second circular truncated cones, clamping of the identification plate is relieved, and after maintenance is completed, the first circular truncated cones are inserted into the sleeves, and the first circular truncated cones are inserted into the sleeves. The clamping block and the first circular truncated cone are clamped again to complete locking.

The invention relates to the technical field of vehicle-mounted images, in particular to a lightweight real-time target detection method and system for an automobile data recorder. The method comprises the following steps: collecting a real-time video frame from an automobile data recorder camera, zooming the real-time video frame to a fixed size to obtain a standardized video frame, combining a preset lightweight target detection model, dividing the standardized video frame into a foreground region image and a background region image, and detecting key target information, key target dynamic data and real-time frames are displayed in an enhanced mode, and when a detection result reaches a dangerous condition threshold value, video buzzing alarm and visual prompt are triggered immediately. According to the invention, the analysis of the key target dynamic data is realized, the change trend in the traffic scene can be accurately captured, the information transmission efficiency is improved, and the reaction time assistance caused by information delay is reduced.

The utility model relates to the technical field of detection equipment, in particular to a fluorescence immunoassay analyzer. Comprising a machine body, a detection window is arranged on the front side of the machine body, a multi-channel reaction disc is arranged on one side of the detection window, a plurality of incubation grooves are formed in the front side of the multi-channel reaction disc, the multi-channel reaction disc comprises a plurality of independently arranged timing modules, buzzers and indicator lamps, and the buzzers and the indicator lamps are electrically connected with the timing modules. When the reaction time of the test card on a certain channel in the multi-channel reaction disc is over, the buzzer and the indicator light can give an alarm; the device can immediately detect a plurality of temperature-controlled test cards in sequence, and does not need to wait for the completion of the temperature control of the next test card, so that a large amount of time can be saved.

The utility model discloses a driving circuit for improving sound pressure of a piezoelectric buzzer. The driving circuit comprises a master control circuit, a coupling circuit, a filter circuit, an operational amplifier circuit, a voltage division circuit, a current limiting circuit, the piezoelectric buzzer, a low-pass filter circuit and an mos tube switching circuit. The corresponding end of the master control circuit is electrically connected with the corresponding ends of the coupling circuit, the low-pass filter circuit and the current limiting circuit. The coupling circuit is electrically connected with the voltage division circuit and the corresponding end of the piezoelectric buzzer through the filter circuit. The low-pass filter circuit is electrically connected with the corresponding end of the voltage division circuit through the operational amplifier circuit; and the current limiting circuit is electrically connected with the corresponding end of the piezoelectric buzzer through the mos tube switching circuit. The driving circuit designed by the utility model is low in cost, and can achieve the effect of improving the sound pressure of the piezoelectric buzzer.

To provide a work machine capable of notifying an operator at an earlier stage of the risk of a work machine tipping over during remote operation.SOLUTION: A work machine 1 comprises a dynamic center-of-gravity position estimation unit 41 that estimates ZMP of the work machine, a support range calculation unit 40 that calculates a support range L of a vehicle body, an operator position determination unit 42 that determines positions P1 to P8 of the operator relative to the vehicle body from acquired position information, a determination range setting unit 431 that sets a high stability range L1 inside the support range L, a determination range correction unit 430 that generates a corrected high stability range L11 based on the positions P1 to P8, a vehicle body stability calculation unit 43 that determines that stability is high if the ZMP is within a corrected high stability range L11 and determines that stability is low if the ZMP is not within the corrected high stability range L11, and a buzzer 33 that outputs determination information from the vehicle body stability calculation unit 43.SELECTED DRAWING: Figure 2

The utility model discloses a semi-automatic straight pipe double-end spot welding machine, which relates to the technical field of spot welding machines and comprises a base, and a left terminal piece feeding mechanism and a right terminal piece feeding mechanism are arranged on two sides of the top of the base. A fixing piece direction rotating mechanism, a spot welding mechanism, a clamping mechanism, a two-color buzzer, a PLC microcomputer controller and a discharging mechanism are arranged in the center of the top of the base. According to the double-end spot welding machine, the servo motor power transmission component, the up-down air cylinder, the push-out air cylinder, the parallel opening and closing finger air cylinder, the fixed piece direction rotating component and the like are integrated, and automatic operation of a series of steps including heating pipe feeding, clamping, transferring, rotary centering, terminal piece processing, pushing, welding and the like is achieved. Compared with the prior art, manual participation links are greatly reduced, the requirement for the technical level of operators is lowered, basic operation can be conducted without technicians or operators, the range of the operators is expanded, and the training cost and the time cost are reduced.

The utility model discloses an intelligent goods shelf, include: a plurality of groups of support frame, carry board, a plurality of groups of quick detach type blocking mechanism and a plurality of groups of early warning prompting mechanism. A plurality of groups of support frame between fixed assembly have carry board. Quick detach type blocking mechanism includes a pair of fixed connecting piece, and the side of a pair of fixed connecting piece close to each other all fixed assembly has the supporting block, and a pair of supporting blocks between sliding assembly has the blocking board. A plurality of groups of early warning prompting mechanism are assembled in the blocking board respectively, and early warning prompting mechanism includes the anti -collision protection air bag, and the outside wall of blocking board is connected with early warning buzzer cylinder threadedly, and the communication of early warning buzzer cylinder and anti -collision protection air bag has the lead -through air pipe, and a plurality of buzzer balls are arranged in early warning buzzer cylinder. The utility model discloses an intelligent goods shelf through the setting of corresponding structure can prevent the goods of placing and protect from falling, has reduced the use safety hidden danger of warehouse goods shelf, has improved the storage stability of warehouse goods shelf.

The invention discloses a saw blade planeness sorter which comprises a rack, a feeding device and a discharging device. A saw blade positioning seat; a lower flat plate; a center locking mechanism; a moving seat; an upper flat plate; a limiting lug block; a height block; a moving mechanism; and an alarm circuit. A saw blade is installed on a lower flat plate, then an upper flat plate is controlled to move downwards, and before the distance between the upper flat plate and the lower flat plate does not reach B + delta, an alarm circuit is switched on, an alarm is given out or an unqualified signal is sent out, and it is judged that the flatness of the saw blade is out of tolerance; if the distance between the upper flat plate and the lower flat plate reaches B + delta, but the buzzer does not ring or does not send out an unqualified signal, the flatness of the saw blade is qualified. The device is simple in structure, stable in operation, low in cost, high in detection efficiency and high in accuracy.

The utility model discloses a three -dimensional parking garage with parking reminding function, including foundation, the lifting bin and the parking bin that are surrounded by the column and the crossbeam of being equipped with by a plurality of on the foundation, be equipped with a plurality of horizontal shift device in the parking bin, the lifting bin top is equipped with hoisting device, be equipped with the lifting device that is connected with hoisting device in the lifting bin, be equipped with the fixed comb tooth seat on the foundation, and the comb tooth of fixed comb tooth seat and the comb tooth of lifting device staggered cooperation, and set up in the inside of lifting path of lifting device, lifting device can drop to the horizontal height less than the horizontal height of fixed comb tooth seat, be equipped with the I -beam groove on the front comb tooth of fixed comb tooth seat, place the bearing plate that is in I -beam shape on the I -beam groove, symmetrically be equipped with reset spring between bearing plate and I -beam groove, be equipped with the placement groove between two reset springs, place the pressure sensor in the placement groove, be equipped with the buzzer of electric connection with pressure sensor on the foundation, the utility model discloses reminding the driver after the vehicle parking in place to improve the parking efficiency.

The utility model relates to the technical field of distribution box control, and specifically discloses a novel distribution box controller comprising a controller body which is provided with a circuit board and a display screen electrically connected with the circuit board. The circuit board comprises an ACDC power conversion circuit, a zero-cross detection circuit, a DCDC power conversion circuit, an RJ45 Ethernet circuit, a temperature and humidity sensor interface circuit, a switching value detection circuit, a relay output control circuit, a buzzer circuit, a wireless remote control circuit, an indicating lamp circuit and an MCU circuit. The ACDC power conversion circuit, the zero cross detection circuit, the DCDC power conversion circuit, the RJ45 Ethernet circuit, the temperature and humidity sensor interface circuit, the switching value detection circuit, the relay output control circuit, the buzzer circuit, the wireless remote control circuit and the indicator lamp circuit are electrically connected with the MCU circuit. The system is high in integration level, reduces the cost, does not need programming, is free of electromagnetic interference through the ACDC power conversion circuit, and prevents the power circuit from being damaged.

The utility model relates to the technical field of network equipment, in particular to a network equipment interface with a network diagnosis function, which comprises an equipment body, interface slots are arranged at two ends of one side of the equipment body, connector lugs are arranged on the interface slots, clamping slots are arranged at two sides of the connector lugs, and diagnosis modules are arranged in the interface slots. The diagnosis module comprises a data capture unit, a connection state monitoring unit and a fault alarm, whether the wiring is normally connected or not can be detected, if looseness or falling is found, an alarm is triggered immediately, and the fault alarm unit can give an alarm through an LED lamp and a buzzer, remind a user to take measures and record related event logs, so that subsequent analysis is facilitated; and the connector lug is matched with the clamping block on the moving plate through the clamping groove, so that the connector lug can be firmly fixed on the interface groove, the mechanical stability of the interface is remarkably improved, the structure is simple, the implementation is easy, and the influence of network interruption on a user is reduced through a fault alarm function.

The invention discloses a test system and a test method for action reliability of a cluster-type intelligent load switch. The cluster type intelligent load switch action reliability test system is provided with a background monitoring main station, a data acquisition control card, a molded case circuit breaker, a contactor cluster, an adjustable load, a temperature measurement sensor, a voltage transformer, a current transformer, a temperature measurement sensor, a scram button, an indicating lamp, a buzzer and a fan. According to the test system and the test method for the action reliability of the cluster type intelligent load switch, the action reliability of a plurality of tested intelligent load switches can be automatically tested and monitored in real time, the test data is displayed and stored in real time, the test result is judged, and the test report is automatically generated through one-time wiring.

The invention provides a laser flame and temperature cooperative detection alarm method and device, and relates to the technical field of safety monitoring and protection of laser processing equipment.The laser flame and temperature cooperative detection alarm method comprises the steps that a laser equipment detection request is responded, flame and temperature initial signals of an area where equipment belongs are synchronously obtained and preprocessed, and historical data are extracted based on preprocessed signals to construct a signal set; flame and temperature signal variation coefficients are calculated, and a composite variation coefficient is obtained by combining dual-signal synergism weighting; according to comparison between the composite variable coefficient and a preset threshold value, double-path cooperation or single-path precise early warning is executed, and buzzing alarm is carried out. The problems that an existing monitoring single parameter is prone to false alarm, the early recognition precision is insufficient, and protection actions cannot be matched are solved, and the protection effects of false alarm reduction, early precise recognition and adaptation to different risks are achieved.

The utility model belongs to the technical field of loudspeakers, and discloses a miniature magnetic panel loudspeaker, which comprises an upper cover and a lower cover, a magnet is fixedly mounted on the lower cover, the magnet is annular, a coil is fixedly mounted in the magnet, a vibrating diaphragm assembly is arranged above the magnet and comprises a vibrating diaphragm and a vibrating diaphragm support, and the vibrating diaphragm support is fixedly mounted on the lower cover. In the application, the diaphragm vibrates integrally, so that the segmentation vibration is greatly reduced, the diaphragm integrity is better, and more excellent high-frequency performance can be brought, therefore, the device combines the advantages of a miniature flat horn, a balanced armature horn and an electromagnetic buzzer, the structure of the horn is simplified, the cost of the horn is reduced, and the mass of the diaphragm is reduced; the segmentation vibration in the working process is reduced, and the sound performance of the loudspeaker in high frequency is greatly improved.

The utility model relates to the field of solder tip dismounting and mounting, in particular to a solder tip dismounting and mounting device which comprises a connecting column and a solder tip, a fixing groove is formed in the front side end face of the connecting column, a first bolt is screwed in the fixing groove, a fixing plate is installed on the front side end face of the first bolt, the fixing plate is made of heat insulation plate materials, and the solder tip is installed on the front side end face of the fixing plate. A fixing plate is arranged on the fixing plate, a connecting column is arranged on the fixing plate, pressure sensors are vertically and symmetrically embedded in the end face of the front side of the connecting column, a buzzer is embedded in the end face of the rear side of the soldering bit, a control panel is arranged in the soldering bit, the control panel is electrically connected with the pressure sensors, and the control panel is electrically connected with the control panel. And therefore, personnel are reminded to tighten the soldering bit in time, and the use effect is prevented from being affected by loosening of the soldering bit.