56results about How to "To achieve the alarm effect" patented technology

The invention discloses a medical nursing hair washing vehicle. The medical nursing hair washing vehicle comprises a sliding plate, the bottom of the sliding plate is provided with sliding wheels, a support column and telescoping fixed rods are sequentially arranged on the sliding plate from left to right, and the tops of the telescoping fixed rods are connected with an operation plate. A water tank and a sewage tank are arranged on the sliding plate, the central part of the operation plate is provided with a hair washing basin, and a water outlet in the bottom of the hair washing basin is connected with the sewage tank through a flexible pipe. A controller and a washing liquid box are respectively arranged at two sides of the operation plate, one end, of the surface of the operation plate, provided with the washing liquid box is provided with two hollow steel pipes, and one hollow steel pipe is provided with a loudspeaker. A heater and a temperature sensor are respectively arranged at the left side and the right side of the interior of a heating box, and a water pipe and a flexible pipe connected with the bottom of the heating box are connected through a rubber pipe, and the joint of the water pipe and the rubber pipe is provided with an electronic valve. The medical nursing hair washing vehicle can prompt the medical workers to pay attention to the water temperature, and the case that the water temperature is too high, the patient or the medical workers are scalded can be avoided.

A bank card payment system having an early warning function utilizes two authentication measures to obtain at least three verification results, the three verification results correspond to three transaction modes including a normal transaction mode, an early warning transaction mode and a transaction rejection mode, and a program is designed to be that a card holder knows the operation performed in the normal transaction mode or in the early warning transaction mode, but persons next to the card holder cannot perform judgment through a transaction page, so that alarming can be completed under the situation that the persons know nothing about.

The invention discloses an automatic alarming vacuum medicine storage cabinet, which comprises an installation base, the upper surface of the installation base is fixedly connected with a medicine cabinet, the inner wall of the medicine cabinet is fixedly connected with a partition board, and the surfaces of the medicine cabinet are respectively provided with air conditioners The inlet, the pressure relief port and the vacuum suction port, the upper surface of the medicine cabinet is fixedly connected with an induction pipe, the inner bottom wall of the induction pipe is provided with an induction port, and the upper surface of the induction pipe is fixedly connected with a power supply box. The automatic alarming vacuum medicine storage cabinet achieves the effect of alarming the medicine cabinet. When the lower contact touches the upper contact for electrical connection, the red light alarm lights up to give an alarm, which achieves the effect of alarming the vacuum in the medicine cabinet. The effect of real-time induction of pressure, when the vacuum pressure in the medicine cabinet becomes small, the induction piston drives the lower contact and the upper contact to electrically connect to the alarm, thus effectively solving the problem that ordinary vacuum medicine cabinets cannot accurately issue air leakage warning.

The invention discloses a swimmer danger monitoring and self-rescue device. The device is characterized in that the device comprises a shell and a gas generator which are worn on a wrist. A touch display screen, a charging socket and a closing alarm switch are arranged outside the shell, and a time module, a central control module, an emergency execution module, a lithium battery, a wireless communication module, an alarm module and a detection module are arranged in the shell. The gas generator comprises an external light shell, a manual button and a bottom cover are arranged on the light shell, and a hose, a liquid funnel communicated with the hose, a cavity, a generator generating a chemical reaction and an air bag collecting gas are arranged in the light shell. The device is easy to use, wide in application range, small, light and cheap; the size of the device is about 50-60 mm, the weight of the device is about 400-500 g, and the user will not feel uncomfortable by wearing the device on the wrist. Chemical substances are used for chemical reactions, so cost can be reduced, waste is avoided, the effect that device is small, exquisite and light is achieved, and the device can bereused by re-adding dosage.

The invention relates to the technical field of electric vehicle charging piles, and discloses collision automatic power-off protection auxiliary equipment for outdoor charging of a new energy vehicle. The equipment comprises a mounting base, a collision bag is movably connected to the interior of the mounting base, a transmission rod is movably connected to the right side of the collision bag, and a buffer plate is movably connected to the exterior of the transmission rod. The right side of the transmission rod is movably connected with a push block, the right side of the push block is movably connected with a circuit breaking spring, the right side of the circuit breaking spring is movably connected with a connecting frame, and the collision bag can bear the collision force from an automobile during collision and the collision force is transmitted to the circuit breaking spring through the push block. The circuit breaking spring is compressed to deform and then drive the connecting frame to move rightwards, then the power-off contacts are driven to move till the two power-off contacts make contact with each other, equipment is powered off after the two power-off contacts make contact with each other, so that the effects that automatic power-off is achieved when the equipment is impacted, and personnel injuries caused by electric leakage are prevented are achieved.

The invention discloses a dust removal device for thermosetting powder coating production. The dust removal device comprises a separation cabin, a thermometer is movably installed on the outer surfaceof one side of the separation cabin, a connecting disc is movably installed on the outer surface of the bottom end of the separation cabin, an air suction chamber is fixedly installed on the outer surface of the upper end of the separation cabin, and a water pipe is movably installed at the position, above the thermometer, of one side of the separation cabin; and operation buttons are arranged onthe outer surface of the front end of the air suction chamber, and an indicating lamp is arranged on the outer surface of the upper end of the air suction chamber. According to the dust removal device for the thermosetting powder coating production, an electrostatic dust collection box, a filter screen layer and an atomizing nozzle are provided so that adsorption to dust can be enhanced, the dustcan be conveniently collected, an alarm can be given in time when the dust removal device breaks down, the internal temperature of the dust removal device can be reduced, and lubricating can be carried out on the interior of the device so that the service life of the device can be prolonged, the use is convenient, and a better application prospect is brought.

The invention discloses a protective liquid level switch for a high-temperature boiler. The switch includes a junction box, inlet port and terminal, the inlet port is connected to the upper end of thejunction box, the terminal is fixedly connected with the inner bottom wall of the terminal box, the lower end of the junction box is fixedly connected with a sleeve, As that slide block and the firstball are added, so that the connecting rod can be kept smooth and smooth during the lifting process, No jamming, This is extremely protective, Prevent the fluid level switch from becoming stuck and losing its function, thereby posing a danger, By adding a ring frame, The second magnetic steel and the floating plate further play a protective role. When the connecting rod is stuck, the floating plate drives the ring frame to rise, thereby driving the second magnetic steel to attract the first magnetic steel so as to achieve the effect of turning on the line alarm. The existence of the air bag enables the floating plate to float more easily, and the sealing ring can play a sealing role at the same time.

The invention relates to the technical field of chemical pipelines, and discloses a flange for a leakage-proof chemical pipeline. The flange comprises a first flange plate and a second flange plate, wherein a first sliding groove is formed in the inner wall of the first flange plate, a sliding block is connected to the inner wall of the first sliding groove in a sliding mode, a sliding rod is fixedly connected to the front surface of the sliding block, a magnetic block is fixedly connected to the inner wall of the sliding rod, a spring is fixedly connected to the top of the sliding rod, an electromagnet is fixedly connected to the top of the spring, a clamping plate is fixedly connected to the bottom of the first flange plate, and a dielectric plate is fixedly connected to the inner wall of the clamping plate. According to the flange for the leakage-proof chemical pipeline, the voltage in a circuit is changed through the dielectric plate, a positive plate and a negative plate, so that the working state of a piezoresistor is changed; and the sliding rod is pushed to move through repulsive force formed between the electromagnet and the magnetic block, and the sliding rod is embedded with a first clamping groove, so that the effect of preventing leakage caused by looseness of the flange plates is achieved.

The invention discloses a clamping table with an alarm function for machining. The clamping table comprises a base and a supporting table, wherein the supporting table is slidably connected to the top end of the base. By arranging a motor, the motor drives a screw to rotate, then the screw drives a support at the outer side of the screw to move, when the support gets close to a limiting boss, the two ends of the support push push rods to slide at the inner sides of spacing rings, and then the push rods push pressing blocks to slide at the outer sides of trapezoidal blocks, the trapezoidal blocks and connecting plates push sliding rods to slide at the inner sides of the clamping plate sets, the ends, located at the opposite inner sides of the clamping plate sets, of the sliding rods are fixedly connected to the clamping blocks, then the clamping blocks clamp the two sides of a workpiece, and then the automatic clamping effect is achieved; and by arranging a pressing plate and a proximity switch, when the pressing plate slides to the bottom end, the other end of a supporting rod just reaches the induction distance of the proximity switch, it shows that the pressing plate is extruded in place, at the moment, the motor stops clamping, a machine tool gives a buzzing alarm, and the effect of giving an alarm during clamping is achieved.

The invention relates to the technical field of light intensity detection, and discloses a device for correcting and alarming when light deviates during light detection. The device comprises a shell, the left end of the inner wall of the shell is fixedly connected with a thrust electromagnet, the right end of the thrust electromagnet is movably connected with a magnet, and the right end of the magnet is fixedly connected with a guide column; the upper end of the guide column is movably connected with a connecting rod, the left end of the connecting rod is fixedly connected with an extension spring, the outer surface of the extension spring is movably connected with a limiting block, the right end of the guide column is movably connected with a push rod, the right end of the push rod is movably connected with a fixing block, and the lower section of the fixing block is fixedly connected with a rotary disc; and the inner wall of the turntable is fixedly connected with a photoresistor. The magnetic block is pushed by the compression spring to move rightwards, so that the clamping block and the teeth are continuously coupled, the turntable is clamped and fixed, light is continuously detected, and the effect of correction is achieved during detection and when the light deviates.

The invention provides an integrated municipal drainage system inspection well liquid level measuring device. The device comprises a measuring rod and a floating ball; the floating ball is connected with a sliding rod; the sliding rod is connected with a sliding block; a first sliding groove and a second sliding groove are formed in the measuring rod; the sliding block is movably connected into the second sliding groove in a sleeving mode; the second sliding groove is connected with the outside through the first sliding groove; the floating ball is connected with the sliding block through thesliding rod; the sliding rod runs through the first sliding groove; a first pressure sensor and a second pressure sensor are both connected with an external processor; the sliding block is further connected with a touch block; the measuring rod is provided with a contact groove matched with the touch block; a third pressure sensor is arranged at the upper end of the contact groove; a fourth pressure sensor is arranged at the lower end of the contact groove; and the third pressure sensor and the fourth pressure sensor are both connected with an alarm. The device can be widely applied to the technical field of municipal engineering.

The invention relates to a wire-breaking alarm device of a diamond wire cutting machine, and belongs to the technical field of cutting equipment. The wire-breaking alarm device of the diamond wire cutting machine comprises a first wire-breaking alarm device and a second wire-breaking alarm device, wherein the first wire-breaking alarm device is arranged on one side of a drive shaft of the diamondwire cutting machine; and the second wire-breaking alarm device is arranged on one side of a driven shaft of the diamond wire cutting machine. According to the wire-breaking alarm device of the diamond wire cutting machine provided by the invention, an alarm power supply of the first wire-breaking alarm device and the second wire-breaking alarm device is switched on, so that when a wire breaking situation happens, the drive shaft and the driven shaft rotating continuously can throw away a broken diamond wire, a first pull wire and a second pull wire located near the drive shaft and the drivenshaft are quickly cut off, an induction block of an alarm not pulled by the first pull wire and the second pull wire is far away from an induction area of a proximity switch through the tension actionof a compression spring, the proximity switch is further triggered to send a signal, and a buzzer starts to alarm quickly and accurately.

The invention discloses a punching machine propulsion alarming device which comprises supporting columns, a mounting plate, a back plate, a punching box, a punching unit and an alarming unit. The supporting columns are welded to the lower end of the mounting plate. The back plate is mounted on the rear side of the upper end of the mounting plate. The punching box is mounted at the top end of the back plate. The punching unit is mounted in the punching box. The alarming unit is mounted on one side of the upper end of the mounting plate. An alarm apparatus box is arranged on the outer side of the lower end of the alarming unit. Shaft mounting plates are mounted on one side in the alarm apparatus box. The shaft mounting plates are connected through a rotating intermediate shaft. An L-shaped rotating bar is mounted on one side of the rotating intermediate shaft. A conductor rotating bar is mounted on the other side of the rotating intermediate shaft. An alarm apparatus is mounted on the upper surface of the end, away from the rotating intermediate shaft, of the alarm apparatus box. A storage battery box is mounted on one side in the alarm apparatus. The punching machine propulsion alarming device can be used for reminding working staff in a buzzer alarming mode when punching propulsion is performed, and excessive punching is prevented.

The invention relates to a light emitting diode temperature alarm based on a phase change material. During the packaging process of a traditional light emitting diode, a phase change material is used as a part of packaging, and epoxy resin or silica gel is used as the sealant, the packaging structure of the phase change material directly contacted with the LED chip is acquired; the heating of the LED chip or the temperature rise of the external environment can make a part of phase change material reach the melting point and generate the phase change; the thermal stress generated by sharp expansion in phase change can cause the offset of the connection line between the chip and the packaging structure and further lead to the LED breakage, thereby reaching the alarm effect of current disconnection and lighting stoppage at a certain temperature. The decline of chip temperature after the LED disconnection or the decline of the external environment temperature can make that the connection line between the chip and the packaging structure is re-contacted with an upper electrode of the chip, the LED is conducted, and thus the alarm is automatically eliminated. The alarm is low in cost, simple in structure, and can realize the exact alarm of the LED chip or the external environment at one temperature point or temperature section.

The invention discloses a medical nursing hair washing vehicle. The medical nursing hair washing vehicle comprises a sliding plate, the bottom of the sliding plate is provided with sliding wheels, a support column and telescoping fixed rods are sequentially arranged on the sliding plate from left to right, and the tops of the telescoping fixed rods are connected with an operation plate. A water tank and a sewage tank are arranged on the sliding plate, the central part of the operation plate is provided with a hair washing basin, and a water outlet in the bottom of the hair washing basin is connected with the sewage tank through a flexible pipe. A controller and a washing liquid box are respectively arranged at two sides of the operation plate, one end, of the surface of the operation plate, provided with the washing liquid box is provided with two hollow steel pipes, and one hollow steel pipe is provided with a loudspeaker. A heater and a temperature sensor are respectively arranged at the left side and the right side of the interior of a heating box, and a water pipe and a flexible pipe connected with the bottom of the heating box are connected through a rubber pipe, and the joint of the water pipe and the rubber pipe is provided with an electronic valve. The medical nursing hair washing vehicle can prompt the medical workers to pay attention to the water temperature, and the case that the water temperature is too high, the patient or the medical workers are scalded can be avoided.

The invention discloses a battery damping device for a new energy automobile, relates to the technical field of automobile battery damping devices, and aims at improving the damping performance. The device specifically comprises a base for mounting a battery main body, the same annular airbag is arranged between the outer wall of the top of the base and the outer wall of the bottom of the battery main body, more than two first air grooves and second air grooves are formed in the outer wall of the bottom of the battery main body, the first air grooves and the second air grooves are distributed in a criss-cross mode, a first air hole is formed in the outer wall of the top of the annular air bag, and the threaded base is located at the intersection point of the first air groove and the second air groove. By arranging the first air groove, the second air groove and the annular air bag, when the battery main body vibrates, the annular air bag performs damping in a deformation mode, and when the annular air bag deforms, airflow is inevitably generated at the first air hole and the second air hole, so that airflow is generated in the first air groove and the second air groove, and the purpose of heat dissipation is achieved while shock absorption is achieved.

The invention discloses a portable warning sign for expressway accident prevention. The warning sign comprises a first rotating plate, a warning sign body and a second rotating plate, a controller isinstalled at one side of the interior of the warning sign body, an alarm is mounted at the other side of the interior of the warning sign body, the first rotating plate is hinged to the outer end faceat one side of the warning sign body through hinges, the second rotating plate is hinged to the outer end face at the other side of the warning sign body through hinges, warning words are installed on the front surfaces of the first rotating plate, the warning sign body and the second rotating plate, LED lamp tubes are mounted inside the warning words, an infrared sensor is mounted below the warning words on the front surface of the warning sign body, the outer surfaces of the first rotating plate, the warning sign body and the second rotating plate are wrapped with lamp strips, bulbs are mounted on the lamp strips, a lifting inner rod is welded to the lower surface of the warning sign body, and the lifting inner rod is sleeved with a lifting outer rod. The warning sign can be conveniently folded, and storage and carrying are more convenient.

The invention discloses a computer network equipment box with anti-theft and alarm functions, and relates to the technical field of network equipment boxes. The computer network equipment box with theanti-theft and alarm functions comprises a box body. The bottom of the box body is fixedly connected with a base, the bottoms of the two sides of the box body are fixedly connected with two weights respectively, and the two weights are fixedly connected to the side surface of the box body through two bolts respectively, two upper and lower sides of the front side of the box body are respectivelyprovided with two hinges and the two hinges are fixedly connected with the upper and lower sides of one side of the box door, and a box door runs through the front surface of the box body. According to the computer network equipment box with the anti-theft and alarm functions, the anti-theft performance of the equipment box can be effectively improved by arrangement of a fingerprint lock on the box door, by arrangement of a latch on the box door and matched arrangement of a plunger and a retaining ring, and thus a thief pulls the plunger out of the retaining ring due to inertia thinking afteropening the fingerprint lock.

The invention discloses a wearable wrist type electronic sphygmomanometer with an alarm function for high-intensity training. The wearable wrist type electronic sphygmomanometer comprises a fixing block, a display screen, a wrist strap I, a micro sucking pump and a wireless signal driver; the display screen is fixedly arranged on the top surface of the fixing block, and a first positive electrodeblock and a first negative electrode block are fixedly arranged on the two sides of the outer surface of the display screen correspondingly; the first positive electrode block and the first negative electrode block are both fixedly arranged in the fixing block; and a second positive electrode block and a second negative electrode block penetrate through the lower surface of the first positive electrode block and the lower surface of the first negative electrode block respectively. According to the wearable wrist type electronic sphygmomanometer with the alarm function for high-intensity training, the wrist strap I and a wrist strap II can be worn and rolled on the arm or the wrist, when a user performs high-intensity training, the blood pressure rises, when a pressure sensor senses that ameasured numerical value is too high, a signal is transmitted to a buzzer, and at the moment, the buzzer makes a sound to give an alarm, and the alarm effect is achieved.

The invention discloses a computer room with a safe operation alarm device. The computer room comprises a room body; a precooling chamber is arranged on one side of the room body; a refrigeration airconditioner and a filter below the refrigeration air conditioner are arranged on the side, far away from the room body, of the precooling chamber; the precooling chamber is connected with the room body through a cooling pipeline; a plurality of support pillars are arranged at the inner bottom end of the room body; a separation plate is arranged at the upper ends of the support pillars; a pluralityof computer placing frames are arranged on the upper end of the separation plate; the upper end of the separation plate is fixedly connected with the end, far away from the precooling chamber, of thecooling pipeline; an alarm device is arranged on one inner side of the room body; and a cooling pump is arranged on the other side of the room body. The computer room has the beneficial effects of being simple in structure, strong in reliability and comprehensive in function; and the computer room is used for distinguishing normal load work and load faults, namely, when the loads are in open circuit or short circuit, different signals are displayed by an output end of the computer room with the safe operation alarm device so as to achieve an alarm effect, thereby ensuring the normal operationdemands of the computer room.

The invention relates to the technical field of fire-fighting equipment and discloses a fire-fighting spray header with an alarm function. The fire-fighting spray header comprises a base and a sealingplug, an air inlet channel communicating the inside and the outside is formed in the base, the air inlet channel inclines from top to bottom, an air vibration channel is formed in one side of the base and used for communicating an inner cavity of the air inlet channel with an external environment, and the sealing plug blocks a lower end opening of the air inlet channel. The air inlet channel andthe air vibration channel are formed in one side of the base. When the spray header is used, since the flow velocity of water in the base is high, known from the Bernoulli principle, the pressure intensity in the base is small, external air enters the base along with the air inlet channel, when the external air passes through an inlet of the air vibration channel, the air is shunted to generate vibration and make a sound, and meanwhile, the air inlet channel easily vibrates to make a sound when the external air accelerates to enter due to a small aperture, so that the base generates harsh sound during water spraying to achieve an alarm effect.

The invention relates to the technical field of intravenous drip nursing in the department of cardiology, and discloses a nursing device for intravenous drip injection in the department of cardiology, which comprises a frame body, a gravity spring is fixedly connected to the bottom of the inner wall of the frame body, a bottom plate is fixedly connected to the top end of the gravity spring, and a medicine bag hanger is fixedly connected to the top of the bottom plate. Warming boxes are fixedly connected to the positions, located on the two sides of the medicine bag hanging frame, in the frame body, the interiors of the warming boxes are slidably connected with air inlet plates, and a ringing device used for alarming and prompting is arranged at the position, located above the telescopic column, in the frame body. According to the nursing device for intravenous drip injection in the cardiology department, the height of a lower bottom plate of a medicine bag hanging frame is controlled through the gravity of a medicine bag, an air inlet plate and a ringing device are satay, and when the air inlet plate moves in an incubator, iron powder in the air inlet plate and activated carbon make contact reaction with oxygen with different contents, so that the effect of heating the medicine bag is achieved; the problem that ice-cold liquid enters a human body to cause discomfort is avoided.

The invention relates to a mining intrinsically safe car backing-up alarming device. More than four middle sound transmission holes, front mounting grooves and rear mounting grooves are formed on the circumference of the inner chamber of a casing; a cable connecting plug is hermetically mounted on a mounting base at the lower part of the casing; a horn is mounted on a rear window of the casing inan inverted manner; a waterproof diaphragm is hermetically mounted on the rear end surface of the casing through a pressure plate; a front cover is mounted at the front part of the casing; a transparent lid is hermetically mounted at a window of the front cover and forms a closed watertight seal cavity; a middle cover plate on which a circuit board, an alarm lamp and a camera are mounted is mounted on the front cover or / and the inner chamber wall of the casing; more than four front sound transmission holes at the front part of an annular groove on the front cover and the middle sound transmission holes on the casing are arranged in a staggered manner; drain holes are formed at the bottom of the annular groove; a rear cover with a spherical surface is mounted at the rear part of the casingand opposite to the waterproof diaphragm; and a cavity between the rear cover and the casing is communicated with the middle sound transmission holes and the front sound transmission holes to form sound channels. The mining intrinsically safe car backing-up alarming device has the advantages of reasonable structure, convenience and reliability in use and flushing resistance, and can dynamically capture video of the rear part of a vehicle.

The invention belongs to the technical field of textile machinery, in particular to an alarm mechanism for warp knitting machine yarn breakage, comprising a chassis, the bottom of the inner cavity of the chassis is fixedly connected with a drive box, the inner cavity of the drive box is provided with a support column, and the outer surface of the support column is socketed There is a slide plate, by setting the guide wheel, when the warp yarn breaks, the guide wheel loses the downward pressure, at the same time, the pressure spring drives the slide plate to slide upward on the inner surface of the chute under the reaction force, and the slide plate drives the support column to move upward, supporting The column pushes the first concave frame to move upward, the first concave frame drives the guide wheel to move upward, and at the same time, the support column drives the trigger plate to move upward through the drive slot, so that the trigger plate contacts the metal contact plate, so that the buzzer is energized, thereby achieving In order to improve the alarm effect, by setting the above structure, it has the advantage of alarming when the warp yarn breaks, thereby effectively reminding the staff.

The invention relates to a multifunctional circuit breaker. The multifunctional circuit breaker comprises a circuit breaker body; a shell is arranged on the outer side of the circuit breaker body in asleeving mode; four baffles are arranged on the top of the inner wall of the shell; a groove with a downward opening is defined by the four baffles; a groove opening of the groove is connected with amicro-motor through a supporting rod; an output shaft of the micro-motor is rotationally connected with a fan; a switch contact piece is arranged at one end, away from the fan, of the micro-motor; aconnecting rod which is hinged to the groove is arranged in the groove in a penetrating mode; a copper contact piece matched with the switch contact piece is connected to the hinged position; a temperature sensor, a PLC, a vertical sliding rod and a driving mechanism for driving the vertical sliding rod to move are symmetrically arranged in the shell; the PLC is connected with the temperature sensor and the driving mechanism; an output shaft of the driving mechanism is connected with the sliding rod; a first sliding chute and a second sliding chute are symmetrically formed in the upper side and the lower side of the shell; a transverse rod is transversely arranged on the sliding rod; and the end part, close to the groove, of the transverse rod is connected with the end part of the connecting rod. The multifunctional circuit breaker has a heat dissipation effect and can achieve a warning effect.

The invention discloses a meshing recording system based on a blockchain technology, and relates to the technical field of meshing recording. The meshing recording system based on the blockchain technology comprises a central processing unit, the central processing unit is in bidirectional connection with a microprocessor arranged in a monitoring chamber, an output end of the microprocessor is connected with an input end of an alarm module, an input end of a displayer, an input end of an indication lamp and an input end of a preprocessor, and the microprocessor is in bidirectional connection with a storage module. According to the meshing recording system based on the blockchain technology, through the arrangement of a sensor, an A / D converter, the central processing unit, a recording collector and the storage module, the effect of recording the meshing frequency is achieved, a user uses the system conveniently, and manual recording is avoided.

The invention discloses an NAMUR switch instrument transmitter and a control method, and relates to the technical field of transmitters, and the NAMUR switch instrument transmitter comprises an MCU microprocessor, a sensor connected with the input end of the MCU microprocessor, a key unit connected with the input end of the MCU microprocessor, and a switch current control circuit connected with the output end of the MCU microprocessor. The NAMUR switch instrument transmitter has the effect of conveniently adjusting and setting alarm points according to field requirements.

The invention discloses a municipal engineering safety protection device which comprises a first protection rod, a second protection rod, a signal antenna, a miniature solar power generation panel, alithium battery, a flexible PCB and a power switch. A first connecting pile is welded to the outer surface of the first protection rod, a folding telescopic frame is hinged to the outer surface of thefirst connecting pile, a supporting structure is fixed to the bottom end of the first protection rod through screws, a fixing cylinder is fixed to the top end of the first protection rod through screws, a cover plate is embedded in the upper surface of the fixing cylinder, a second connecting pile is integrally connected to the upper surface of the cover plate, a miniature solar power generationpanel is hinged to the top end of the second connecting pile, the signal antenna is attached to the lower surface of the cover plate, and a protection cylinder is arranged on the inner side of the fixing cylinder. When the device is in an abnormal condition, alarm information can be sent in time, the post-event protection effect is improved, and the hazard of potential safety hazards is reduced tothe maximum extent.