31results about How to "Automatic shutdown" patented technology

The invention discloses a superfine dry powder cold aerosol automatic fire-extinguishing system which comprises a fire extinguisher, a driving gas delivery conduit, spraying devices and a control device, wherein the fire extinguisher comprises a gas storage device, a control valve assembly and a connecting pipeline, and the gas storage device is connected to the input end of the driving gas delivery conduit through the control valve and the connecting pipeline; a control valve assembly is controlled to open and close by the control device; the spraying devices are distributed in the protected area according to the engineering requirements; each spraying device is provided with a powder storage tank; the powder storage tank is connected to the output end of the driving gas delivery conduit through a first control valve; the powder storage tank is provided with a spraying outlet which is provided with a second control valve; and the first and second control valves are controlled to open or close in a pneumatic or electric mode. Compared with the prior art, the fire-extinguishing system of the invention has the advantages of simple structure, favorable fire extinguishing effect, low engineering investment and low maintenance expense.

The invention relates to the technical field of municipal machinery, in particular to a sludge cleaning device for municipal engineering river treatment. The sludge cleaning device comprises a sludgefishing mechanism, a sludge treating mechanism, a floating object collecting mechanism and a bottom plate which is horizontally arranged, wherein the bottom plate is of a cuboid structure; and the sludge fishing mechanism comprises a sludge collecting assembly and a lifting assembly which is used for driving the sludge collecting assembly to ascend and descend, the sludge collecting assembly comprises a U-shaped connecting plate and a rotating shaft, and the rotating shaft is provided with a fishing box with an upward opening in a sleeve mode. The sludge cleaning device has the beneficial effects that the fishing operation of river sludge can be automatically realized through the sludge fishing mechanism, the drying and crushing operation of the sludge can be automatically realized throughthe sludge treating mechanism, and floating objects can be automatically collected through the floating object collecting mechanism, so that workers do not need to manually carry out fishing, and therefore the working efficiency of municipal administration is improved.

The invention discloses a pilot type pipe burst shutoff valve and a method for controlling the same. The pilot type pipe burst shutoff valve is characterized in that a main valve is connected with a pilot valve by a connecting pipeline; the pilot valve comprises a pilot valve body, a pilot valve end cover is mounted at the bottom of the pilot valve body, a closed chamber is formed by the pilot valve body and the pilot valve end cover, a pilot valve spring and a pilot valve element are mounted inside the closed chamber, an adjusting bolt is mounted on the top of the pilot valve body, and the bottom surface of the adjusting bolt is matched with the top of the pilot valve spring in a contact manner; a first pilot valve opening is formed in a side surface of the bottom of the pilot valve bodyby means of machining and is communicated with an opening in a water outlet side of the main valve; a pilot valve bottom opening is formed in the center of the pilot valve end cover by means of machining and is communicated with a main valve opening of the main valve; a second pilot valve opening and a third pilot valve opening which are communicated with the atmosphere are further formed in a side wall of the pilot valve body. The pilot type pipe burst shutoff valve and the method have the advantages that the pilot type pipe burst shutoff valve can adapt to normal change of internal pressuresof pipelines, and action pressures of the pilot type pipe burst shutoff valve can be freely adjusted.

The invention discloses an IoT linked automatic lamp control system of a building. The system comprises a user terminal and a lamp control terminal; the user terminal sends input floor, which a user arrives at, and user identity information; the lamp control terminal comprises a wireless reception module, a data extraction module, a control module, a storage module, a display module and a lamp control array; the lamp control array is composed of lamp illumination modules and relays arranged in different floors; the storage module establishes mapping between the user floor and the user identity information and then stores the mapping; and the control module inquires and verifies the extracted user identity information in the storage module, determines the mapped user floor according to the user identity information when verification passes, generates a trigger signal so that the lamp illumination module works, and disconnects the relays so that the lamp illumination module stops working. The system can start lamp illumination of the floor required by the user flexibly, provides illumination for the user conveniently, realizes control accurately, and improves the system practicality.

The invention discloses an iron furnace slag and coal cinder ash autoclaved brick production device. The iron furnace slag and coal cinder ash autoclaved brick production device comprises a mounting seat, wherein a first mounting plate is fixed at one end of the mounting seat; a first servo motor is fixed on the first mounting plate; a screw rod is fixed on an output shaft of the first servo motor; the screw rod is in threaded connection with a movable block; a movable seat is welded to the movable block; a forming die is mounted on the movable seat; a plurality of forming cavities are formedin the forming die; a material ejection mechanism is arranged in each forming cavity; a material storage barrel is arranged in the middle of the mounting seat; the material storage barrel is welded tothe mounting seat through a supporting frame; the upper end of the material storage barrel communicates with a feeding pipe; a stirring mechanism is arranged in the material storage barrel; the bottom end of the material storage barrel communicates with a discharging pipe; a discharging switch mechanism is arranged in the discharging pipe; a material pressing mechanism is arranged on one side ofthe lower end of the discharging pipe; and the forming die is located below the discharging pipe and the material pressing mechanism. By adopting the iron furnace slag and coal cinder ash autoclaved brick production device, raw materials are stirred and the flowability is improved; and automatic discharging, material pressing, material scraping and material ejection are realized, and the working efficiency is high.

The invention relates to a security protection system and a protection method thereof, in particular to a strategy customization-based Android mobile phone security protection system and a protection method thereof. The protection system and the protection method are mainly applied to data security protection in the mobile field and belong to the wireless communication field. The strategy customization-based Android mobile phone security protection system includes a mobile phone anti-theft module, a communication guard module, a traffic statistics module, a process management module and a system optimization module; the system is applicable to various kinds of Android devices; the functions of the modules can be turned on and turned off by users autonomously, and therefore, different security demands of different users can be satisfied, and protection strategies can be more effective. The invention also provides a strategy customization-based Android mobile phone security protection method.

The invention belongs to the field of unmanned aerial vehicles, particularly relates to a trunk unmanned aerial vehicle undercarriage, and provides the following scheme that the trunk unmanned aerial vehicle undercarriage comprises a shell, an opening is formed in the top end of the shell, a placing plate is arranged in the shell, four piston cylinders fixedly connected to the bottom wall of the shell are arranged below the placing plate, and piston rods are slidably connected to the top ends of the piston cylinders; the bottom end of the piston rod is fixedly connected with a piston block slidably connected into the piston cylinder, the top end of the piston rod is fixedly connected with a containing plate, an air bag is installed on the inner wall of the bottom end of the shell, an air guide pipe is connected between the piston cylinder and the air bag, and a first contact switch located below the containing plate is installed on the inner wall of the bottom end of the shell. According to the device, when the unmanned aerial vehicle takes off and lands, buffering force can be provided, the situation that electronic parts in the unmanned aerial vehicle are damaged by recoil force generated after the unmanned aerial vehicle lands on the supporting plate is avoided, the opening of the shell can be automatically closed after the unmanned aerial vehicle lands, and the unmanned aerial vehicle is clamped and fixed while the unmanned aerial vehicle is closed.

The invention discloses an intelligent humidifier for an office. The intelligent humidifier for the office comprises a base and a box, wherein the base is provided with a mounting groove and a battery; an ultrasonic atomizer is arranged in the mounting groove; and the box is separately mounted in the mounting groove and is placed on the ultrasonic atomizer. When the box is placed on the ultrasonic atomizer during use of the intelligent humidifier for the office, pressure heads at the bottom of the box are exactly pressed into switch grooves and can press pressure plates, and after the pressure plates are pressed downwards, upper contacts on the pressure plates are matched with lower contacts in the switch grooves, so that a battery and the ultrasonic atomizer form a power loop, the ultrasonic atomizer is started to atomize water in the box, atomized water mist is discharged from mist holes to realize humidifying; after water in the box is gradually atomized, the weight of the box can be reduced; and when a spring force is greater than the weight of the water in the box, springs can jack up the box, the upper contacts are disconnected from the lower contacts, and then the ultrasonic atomizer is closed automatically.

The invention belongs to the technical field of kitchen tools, and particularly relates to an intelligent control system of an integrated cooker. The system comprises a master controller, a single-chip microcomputer, a buzzer, a temperature sensor, a pressure sensor, a control module and an interaction unit; the interaction unit comprises a man-machine interaction module and an RS485 connector; the control module comprises an analog switch and an electromagnetic valve, the single-chip microcomputer, the buzzer, the temperature sensor and the pressure sensor are all electrically connected with the master controller, the man-machine interaction module is electrically connected with the master controller through the RS485 connector, and the master controller is electrically connected with the electromagnetic valve through the analog switch. The intelligent control system of the integrated cooker has the beneficial effects that the double-system structural design of the master controller and the single-chip microcomputer is adopted in the intelligent control system of the integrated cooker, the temperature sensor and the pressure sensor are adopted to achieve real-time data collection, a gas source is automatically closed, and the burning-out problem is solved.

The invention provides an eccentricity detection device and a pulsator washing machine. The eccentricity detection device comprises a fixed base, a microswitch and a rotating rod; the microswitch is arranged on the fixed base and located on one side of the fixed base; the rotating rod is rotatably arranged on the fixed base through an elastic piece and is positioned on the other side of the fixedbase; and the rotating process of the rotating rod comprises a first position separated from the microswitch and a second position touching the microswitch. The scheme provided by the invention is simple in structure, flexible to use and easy to install; the eccentricity detection device is applied to the washing machine and can effectively detect the deviation condition of a washing barrel and perform power-off processing, so that the safety risk is reduced, the personal safety of a user is guaranteed, and the experience feeling of the washing machine is improved.

The invention discloses an explosion-proof device on a smelting furnace. The explosion-proof device comprises a furnace body of the smelting furnace. A pressure relief hole is formed in the furnace body. An explosion-proof pipe communicated with the pressure relief hole is formed on the outer wall of the furnace body. A retaining ring is fixedly inserted into the lower end of the explosion-proof pipe. An explosion-proof cover is inserted in the explosion-proof pipe. The lower end surface of the explosion-proof cover is pressed against the retaining ring. The outer wall of the explosion-proof cover is pressed against the inner wall of the explosion-proof pipe. A guide column is formed in the center of the upper end surface of the explosion-proof cover. A positioning disc is fixedly insertedinto the portion, on the upper side of the guide column, in the explosion-proof pipe. A guide hole is formed in the center of the positioning disc. The guide column of the explosion-proof cover is inserted into the guide hole of the positioning disc. A magnet ring is fixed on the portion, around the guide column, of the upper end face of the explosion-proof cover, electromagnets opposite to the magnet ring are fixed on the upper end face of the positioning disc, and the electromagnets and the magnet ring repel each other. A proximity switch sensor opposite to the guide column is fixedly inserted into the portion, at the upper side of the positioning disc, of the explosion-proof pipe. By the adoption of the explosion-proof device on the smelting furnace, the explosion-proof cover can be automatically closed after explosion-proof pressure relief.

The invention relates to the technical field of grass and wood cultivation, in particular to a strawberry soilless culture device, which comprises a rack and a culture plate, wherein a concave culturetank is arranged on the culture plate; a containing frame for containing crops is arranged above the culture tank; a collecting tank is arranged below the culture tank; a guide pipe is communicated between the culture tank and the collecting tank; a collecting box is arranged on one side of the collecting tank; a liquid extraction pipe is communicated with the bottom of the collecting box, the liquid extraction pipe is communicated with the culture tank, a liquid outlet pipe is communicated between the collecting box and the collecting tank, a push plate and a first telescopic rod are arranged in the collecting box from left to right, the push plate is fixedly connected with the first telescopic rod, a water tank is arranged on the other side of the collecting tank, a stirring basin is arranged above the water tank, a culture solution tank is arranged on one side of the water tank, a motor is arranged in the stirring basin, an output shaft of the motor is coaxially connected with a rotating shaft, the rotating shaft is connected with a stirring rod, a drainage tube is communicated between the stirring basin and the culture tank, and a pressure switch which is electrically connected with the motor is arranged on the rack. By adopting the scheme for strawberry soilless culture, the utilization rate of the culture solution can be improved.

The invention discloses an explosion-proof cover mechanism on a smelting furnace. The explosion-proof cover mechanism comprises a furnace body; a pressure relief hole is formed in the furnace body; anexplosion-proof pipe is formed on the outer wall of the furnace body; an explosion-proof cover is inserted into the explosion-proof pipe; a guide column is formed on the explosion-proof cover; a positioning plate is inserted into the explosion-proof pipe; a guide hole is formed in the center of the positioning plate; the guide column is inserted into the guide hole; the guide column is sleeved with a first compression spring in an inserted manner; a pressure relief groove is formed in the side wall of the explosion-proof pipe; a limiting hole is formed in the side wall of the guide column; anaccommodating groove is formed in the inner wall of the guide hole; a telescopic rod is inserted into the accommodating groove; the telescopic rod consists of several joint pipes; the adjacent jointpipes are inserted together; an iron block is fixed to the leftmost joint pipe of the telescopic rod; a first electromagnet is fixed to the inner wall of the accommodating groove; the telescopic rod is sleeved with a second compression spring in an inserted manner; the two ends of the second compression spring abut against the leftmost joint pipe of the telescopic rod and a support correspondingly; and a second electromagnet is fixed in the limiting hole. According to the invention, the explosion-proof cover after explosion-proof pressure relief can be automatically closed.

The invention provides a commutation driving circuit of a ring winding permanent magnet brushless DC motor. A power switch in the next state is conducted and a power switch in the previous state is disconnected simultaneously, or the two power switches are simultaneously conducted within a quite short period of time; diodes provide a freewheeling path in commutation; commutation windings quickly change direction under the effect of DC side voltage; and the commutation moment is the moment when the induced electromotive force of the windings is zero, and then the output torque of the motor is the maximum output torque. The commutation driving circuit is high in commutation speed and suitable for the situations of relatively high frequency of commutation, such as a multipolar motor or a high-speed motor.

The invention discloses a dust remover with good dust removal effect, small occupied area and energy-saving performance. The adopted technical proposal is that the dust remover comprises an air suction pipe (5), a dedusting gas cleaner (10), a dehydrator (11), a circulating water tank (14) and a return air pipe (20); wherein one end of the air suction pipe (5) is connected with a dust hood (3) and the other end is connected with the dedusting gas cleaner (10) and the dehydrator (11), which is connected with the return air pipe (20) and the circulating water tank (14); and a coal dust concentration sensor (19) is arranged on the dust hood (3). The invention can be broadly applied for controlling the dust pollution in coal mine and places for grinding, screening, transporting, loading and unloading materials.

The invention discloses a music playing umbrella capable of synchronizing music playing with umbrella folding and unfolding. The music playing umbrella comprises an umbrella body, a music playing chip, a battery component and a switch, and the music playing chip, the battery component and the switch form a circuit loop. The umbrella body is provided with an umbrella fabric, a middle rod, an upper nest, a middle nest, a lower nest, a middle nest positioning part, a bottom spring and a rib device, wherein the upper nest is fixedly arranged at the upper end of the middle rod, the middle nest and the lower nest are slidably arranged on the middle rod, the middle nest positioning part is arranged on the side wall of the middle rod below the upper nest and limits the middle nest to slide upwards, the bottom spring is arranged at the lower end of the middle rod, and the rib device is connected with the upper nest, the middle nest and the lower nest. The switch is an inductive switch arranged at the lower end of the middle nest positioning part, and the inductive switch is open in the normal state so as to switch off the circuit loop and is closed to switch on the circuit loop when the middle nest butts against the middle nest positioning part. Compared with the prior art, the music playing umbrella can automatically realize on and off of the music playing function without manually touching the switch, and accordingly convenience in use of the music playing umbrella is improved greatly.

The invention discloses an explosion-proof structure for a smelting furnace. The structure comprises a furnace body. A pressure relief hole is formed in the furnace body; anti-explosion pipes are mounted on the outer wall of the furnace body; an anti-explosion cover is inserted into the anti-explosion pipes; a guide column is mounted on the anti-explosion cover; a positioning disc is inserted intothe anti-explosion pipes; a guide hole is formed in the center of the positioning disc; and the guide column is inserted into the guide hole. A first pressure spring is inserted into the guide columnin a sleeving mode; pressure relief grooves are formed in the side walls of the anti-explosion pipes; limiting holes are formed in the side wall of the guide column; a containing groove is formed inthe inner wall of the guide hole; a limiting rod is inserted into the containing groove; an inserting rod is mounted at one end of the limiting rod and sleeved by a second compressed spring in an inserted mode; the two ends of the second compressed spring abut against the limiting rod and the side wall of the containing groove respectively; and annular positioning plates are mounted on the limiting rod. Annular grooves are formed in the containing groove, the positioning plates are inserted into the annular grooves, electromagnets are fixed in the annular grooves, and the positioning plates are attracted to the electromagnets. According to the explosion-proof structure for the smelting furnace, the automatic closing of the anti-explosion cover can be realized after explosion-proof pressurerelief.

The present invention discloses an outdoor intelligent dustbin comprising a bin body, a bin cover, and a drive mechanism. Grooves are provided at two sides of the bin body. A support plate is arrangedin the middle of each groove and provided with a threaded through hole in an upper end face thereof. The bin cover is arranged over the bin body and a solar panel and a humidity sensor are arranged on the outer surface of the bin cover. The drive mechanism comprises a drive screw, a rotating sleeve and a driving motor. The drive screw is connected with the threaded through hole in a matching manner, and the upper end of the drive screw is rotatably connected with the bin cover, while the lower end thereof is provided with an orthohexagonal column. The rotating sleeve is arranged below the drive screw and a counter bore matching the orthohexagonal column is provided in the upper end thereof. The lower end of the rotating sleeve penetrates through and is rotatably connected with the supportplate. The driving motor is arranged at the lower end of the rotating sleeve to drive the rotating sleeve to rotate. A control box is arranged at the bottom of the bin body. An MCU is arranged withinthe control box. Under the control of the MCU, the cover of the dustbin can be automatically closed on rainy days and opened after the rain stops, and therefore, high intelligence is achieved; and with the solar power generation as the power source, energy conservation and environment protection can be realized.

The invention relates to a wind power generation tower. The wind power generation tower comprises a tower body, the tower body is provided with a power generation chamber, a power generation device is arranged in the power generation chamber, a lifting cavity is formed in the tower body, the lifting cavity and the power generation chamber are connected through a climbing channel, a passing cavity is formed in one side of the bottom of the tower body, a maintenance cavity is formed in one side of the upper portion of the tower body, a vertical lifting mechanism is arranged in the lifting cavity, the vertical lifting mechanism is slidably connected with a conveying plate, a conveying rail is arranged at the top of the lifting cavity, a conveying device is arranged on the conveying rail and comprises an electric hoist, paired rolling wheels are arranged on the electric hoist, the electric hoist is provided with a hook, conveying chains are fixed to the four corners of the conveying plate, the conveying chains are connected with the hook, a transverse translation mechanism is arranged in the lifting cavity, an overhaul door is arranged on one side of the overhaul cavity, and a linkage door opening mechanism is arranged in the overhaul cavity. According to the wind power generation tower, maintenance personnel can be conveyed to all positions of the tower body to carry out maintenance and overhaul work, the maintenance personnel do not need to climb by manpower, and the overhaul efficiency is improved.

The invention belongs to the technical field of state monitoring of audio communication and bone conduction auditory devices, and particularly relates to a state monitoring device and method for a bone conduction auditory device, and the device comprises a data collection module which is used for obtaining the input electrical impedance collected by an input electrical impedance detection circuit disposed on the bone conduction auditory device in real time; a judgment module which is used for judging the wearing state of the bone conduction auditory device in the current state based on the input electrical impedance obtained in real time according to the electrical impedance judgment criterion; or judging the wearing state of the bone conduction auditory device in the current state based on the load force impedance obtained in real time according to the load force impedance judgment criterion; and a state monitoring module which is used for monitoring the wearing state of the bone conduction auditory device according to the judgment result, performing startup and shutdown and volume adjustment operation on the bone conduction auditory device, and completing state monitoring of the bone conduction auditory device.

The invention discloses a dual-battery switching structure of a portable general life support system adapted to a field environment, and the structure comprises a buck-boost module electrically connected with an external adapter, and a charging module A and a charging module B for charging a fixed battery A and a detachable battery B. The output ends of the fixed battery A and the detachable battery B are connected with a switching circuit; the output end of the switching circuit and the output end of the buck-boost module are connected with the input end of the main power supply branch and the input end of the single-chip microcomputer power supply branch, and the output end of the main power supply branch is connected with a mainboard of the portable general life support system to supply power to the portable general life support system. The output end of the single-chip microcomputer power supply branch circuit is connected with a power management module used for controlling the charging module A, the charging module B, the switching circuit and the main power power supply branch circuit to work coordinately. According to the invention, dynamic distribution of system power can be realized, power is provided to the system to supply power to the maximum, and charging power does not need to be reserved, so continuous work of the portable general life support system in a field environment is effectively guaranteed.

The invention discloses a superfine dry powder cold aerosol automatic fire-extinguishing system which comprises a fire extinguisher, a driving gas delivery conduit, spraying devices and a control device, wherein the fire extinguisher comprises a gas storage device, a control valve assembly and a connecting pipeline, and the gas storage device is connected to the input end of the driving gas delivery conduit through the control valve and the connecting pipeline; a control valve assembly is controlled to open and close by the control device; the spraying devices are distributed in the protectedarea according to the engineering requirements; each spraying device is provided with a powder storage tank; the powder storage tank is connected to the output end of the driving gas delivery conduitthrough a first control valve; the powder storage tank is provided with a spraying outlet which is provided with a second control valve; and the first and second control valves are controlled to openor close in a pneumatic or electric mode. Compared with the prior art, the fire-extinguishing system of the invention has the advantages of simple structure, favorable fire extinguishing effect, low engineering investment and low maintenance expense.

The invention provides an airplane airtight cabin drain valve comprising a valve body assembly, a valve element assembly and a mounting seat, the valve body assembly comprises a valve body with a valve cavity and at least one set screw part, the side wall of the lower end portion of the valve body is provided with at least one valve body water inlet, and the lower end face is provided with a valve body drain hole; and the valve element assembly comprises a valve element and a compression spring part. The mounting seat comprises a mounting seat main body with a valve body mounting cavity, at least one mounting seat water inlet is formed in the side wall of the lower end portion of the mounting seat main body, a mounting seat internal thread is arranged on the inner surface of the valve body mounting cavity, and a first valve body external thread is arranged on the outer surface of the valve body; and the valve body is rotatably mounted in the valve body mounting cavity in the mode that the first valve body external thread is matched with the mounting seat internal thread, at least one set screw hole is formed in the side portion of the mounting seat main body, and when the lower end surface of the valve body is flush with the outer side surface of a fuselage skin, the tail end portion of the set screw part extends into the valve body mounting cavity and is tightly pressed on the outer surface of the valve body.

The invention discloses a dual-battery switching structure of a portable universal life support system adapted to the field environment, including a buck-boost module electrically connected to an external adapter, and A charging modules and B charging modules for charging the fixed battery A and the detachable battery B respectively module, the output terminals of the fixed battery A and the removable battery B are connected with a switching circuit, and the output terminals of the switching circuit and the buck-boost module are connected with the input terminals of the main power supply branch and the single-chip microcomputer power supply branch, and the main power supply branch The output end of the circuit is connected to the main board of the portable general life support system to supply power for it, and the output end of the single-chip microcomputer power supply branch is connected to the power management module for controlling the A charging module, the B charging module, the switching circuit and the coordinated operation of the main power supply branch. The present invention can realize the dynamic allocation of system power, maximize the power supply to the system, and does not need to reserve charging power, thereby effectively ensuring the continuous work of the portable general life support system in the field environment.

The invention discloses a faucet capable of preventing a user from forgetting to turn off. The faucet comprises a faucet body, an ultrasonic water level measuring device, a valve device, a linkage device, an indicating reminding device and a generating device, wherein the ultrasonic water level measuring device is used for detecting the distance between the water level and the top of water pool. When the water level reaches the top of the water pool, a control module in the ultrasonic water level measuring device can send an instruction to close the valve device, make an LED indicator emit red light and make a buzzer sound. The faucet is provided with the generating device, so that no external power supply is required and the faucet has low-carbon and environment-friendly effects.

The invention relates to the technical field of optical cable cross-connecting boxes, in particular to a wall-mounted optical cable cross-connecting box convenient for height adjustment, which comprises a bottom plate, a bottom frame, a supporting rod, a top frame and a box body, a first screw hole is formed in the supporting rod, a second screw hole is formed in a sliding rod, the height of the sliding rod can be adjusted by using a bolt, and the size of the frame body of the optical cable cross-connecting box is further adjusted, so that the optical cable cross-connecting box can be used for mounting walls with different sizes, the mounting and using range of the optical cable cross-connecting box is expanded, and the optical cable cross-connecting box can be adapted to box bodies with different sizes by adjusting the height of the sliding rod, the capacity range of the optical cable cross-connecting box can be adjusted and controlled more flexibly, more choices are provided for actual use requirements, the compatibility of the optical cable cross-connecting box is improved by adapting to box bodies of different sizes, convenience is provided for later replacement, and the service life of the optical cable cross-connecting box is prolonged.

The invention discloses a cyclotron beam intensity modulation method with a secure self-locking function. A first vertical deflection plate and a second vertical deflection plate are sequentially placed on a DEE plate or a Dummy DEE in a central region of a cyclotron, a beam baffle is placed between the first vertical deflection plate and the second vertical deflection plate, the proportion of particles passing through the beam baffle is changed by adjusting the voltage on the first vertical deflection plate and the second vertical deflection plate, and thus the beam intensity modulation and the beam shutting off can be implemented; and when a power supply of the vertical deflection plates fails, the power-off protection can be automatically performed, and the particles are completely hitonto the beam baffle. According to the scheme of the invention, the beam intensity modulation and the beam shutting off can be achieved by changing the voltage of the vertical deflection plates, the whole process is controlled by a power supply system outside the cyclotron, and the method is convenient and effective; and when the power supply system fails, the beams are completely hit onto the baffle to automatically perform a shutting off operation, and the secure self-locking can be provided for the equipment and personnel.

The invention belongs to the technical field of audio communication and state monitoring of bone conduction hearing devices, and in particular relates to a state monitoring device and monitoring method for bone conduction hearing devices. The input electrical impedance collected by the input electrical impedance detection circuit on the bone conduction hearing device; the judgment module is used to judge the wearing state of the bone conduction hearing device in the current state based on the input electrical impedance obtained in real time according to the electrical impedance discrimination criterion ; or according to the load force impedance discrimination criterion, based on the load force impedance acquired in real time, judging the wearing state of the bone conduction hearing device in the current state; and a state monitoring module, used to monitor the wearing state of the bone conduction hearing device according to the judgment result, Turn on and off the bone conduction hearing device and adjust the volume to complete the state monitoring of the bone conduction hearing device.