22results about How to "Increase range" patented technology

The utility model discloses an optical power acquisition range automatic switching circuit, and belongs to the technical field of amplification circuits. An automatic switching circuit for optical power acquisition ranges comprises a photoelectric sensor PD1, a current-voltage conversion amplification circuit, a secondary amplification circuit, a comparison circuit and a voltage selector U4. The output voltage of the current-voltage conversion amplification circuit is divided into two paths, one path is connected to an NC1 pin of the voltage selector U4, and the other path is used as the input of the secondary amplification circuit; the output voltage of the secondary amplification circuit is divided into two paths, one path is connected to a NO1 pin of the voltage selector U4, and the other path is used as the input of the comparison circuit; the comparison circuit is used for comparing the output voltage of the secondary amplification circuit with a preset reference voltage, and the output voltage of the comparison circuit is used as the input of an I O pin of the voltage selector U4; and the voltage selector U4 selects to connect the COM end with the NC1 or NO1 channel according to the input of the I O pin, so that automatic switching of the optical power detection range is realized, and the optical power detection range is improved.

This invention discloses a high-pressure ejector spraying device and method for azeotropic working fluids driven by engine waste heat. The device includes: an internal combustion engine with an internal exhaust pipe; a working fluid heating mechanism located in the waste heat area of ​​the internal combustion engine, utilizing the waste heat from the exhaust pipe; and a high-pressure ejector mechanism whose outlet is connected to the outlet of the working fluid heating mechanism to eject the generated azeotropic mixture high-pressure steam. The central shaft of the blower body within the high-pressure ejector mechanism is connected to the drive shaft of the internal combustion engine to increase the blower body's rotational speed. This device overcomes the problems of complex independent burner structures, high failure rates of ignition and fuel supply systems, and susceptibility to flameout, backfire, and carbon buildup in traditional fogging equipment, resulting in poor operational stability. Furthermore, the burner continuously consumes gasoline, leading to high energy consumption and operating costs.

The invention discloses a variable range magnetic sensor based on a magnetic shielding effect and application, the variable range magnetic sensor comprises a magnetic shielding sleeve, a printed circuit board and a magnetoresistance sensing chip, the magnetic shielding sleeve is embedded in the printed circuit board, and the magnetoresistance sensing chip is arranged on the printed circuit board and located in the magnetic shielding sleeve. A single-layer double-opening permalloy magnetic shielding sleeve is nested on a PCB (Printed Circuit Board), and a magnetoresistance sensing chip is arranged in the magnetic shielding sleeve. The structure is designed to be used for increasing the measuring range of the magnetoresistance sensing chip, and dynamic adjustment of the measuring range of the sensor is achieved by adjusting the position and the thickness of the magnetic shielding sleeve. The sensor described by the invention can be better applied to a scene with a wide dynamic magnetic field range, and has better nonlinearity and anti-interference capability.

The application discloses a kind of foam-based flexible tactile sensor and its preparation method, the flexible tactile sensor has three-layer structure, middle layer is PEDOT:pss / rGO composite foam, the composite foam is tactile sensing material, and the upper and lower layers are both flexible PDMS film;The application uses simple and efficient hydrothermal synthesis method and subsequent flash instantaneous irradiation reduction method, and prepares a kind of three-dimensional porous PEDOT:pss / rGO composite foam, can effectively and maximumly keep the composite skeleton structure of original PEDOT:pss / GO foam, and makes PEDOT:pss polymer polymer and rGO sheet closely connected, so that PEDOT:pss / rGO composite foam has better mechanical elasticity and high conductivity, so that flexible tactile sensor has high sensitivity, ultra-low detection lower limit, short response time and good stability and other excellent performance, widely used in human health, motion monitoring and other fields.

This utility model discloses a cell culture dish shaking device, relating to the field of cell culture equipment technology. The utility model includes a housing with a tray on top. A locking mechanism is movably connected to the top of the tray, and a shaking mechanism is fixedly connected to the inner cavity of the housing. The locking mechanism of this utility model employs a design of magnetic locking blocks engaging with slots and magnetic adsorption. When replacing the expansion plate, the experimenter only needs to align the magnetic locking block of the expansion plate with the slot on the tray, and installation can be quickly completed using magnetic force, without the need for any tools. Disassembly only requires applying an external force slightly greater than the magnetic force to separate the expansion plate from the tray, significantly saving experimental preparation and cleaning time and improving experimental efficiency. Furthermore, by replacing expansion plates of different specifications and shapes, it can adapt to cell culture dishes of different sizes, as well as diverse experimental containers such as flasks and deep-well plates, greatly enhancing the adaptability of the device to different experimental needs.

This invention provides a rear-mounted guide vane with a cylindrical body for an axial flow fan, belonging to the field of ventilation equipment technology. It solves the problems of insufficient airflow or low static pressure efficiency in the high static pressure zone in existing technologies. This invention includes a guide vane body, guide vane blades, and a central hub. The two sides of the guide vane body are the outlet side and the inlet side, respectively, with the diameter of the outlet side being larger than that of the inlet side. The guide vane body is integrally formed and has a conical ring shape. The inner wall of the guide vane body forms a first mounting surface, which is a conical ring structure. The central hub is ring-shaped, and several mounting protrusions are formed on one side of the central hub. The outer surface of the central hub and the mounting protrusions forms a second mounting surface. The guide vane blades are numerous and arranged in a circumferential array, fixed between the first and second mounting surfaces. The cross-section of the guide vane blades is a thin plate structure of uniform thickness with an arc shape. This invention has the advantages of reducing turbulence, increasing airflow in the high static pressure zone, high static pressure efficiency, and increased range.

This utility model belongs to the field of LED display technology and discloses an outdoor LED grid display screen, including multiple LED light source emitters arranged in a grid array. Each LED light source emitter includes an emitter body and a light source emitting head. One side of the emitter body is a mounting surface and is mounted on a mounting frame. Multiple light source emitting heads are correspondingly embedded on the end face of the emitter body away from the mounting surface. The light emitted by the light source emitting heads is emitted horizontally in a wide-angle manner. Each light source emitter is equipped with a reflector located above the light source emitting head. One end face of the reflector is an inclined mirror surface, with its lower end abutting against the end face of the emitter body away from the mounting surface and its upper end away from this end face, so as to reflect part of the light emitted upwardly by the light source emitting head in a horizontal direction. This grid display screen can reduce the upward tilt of light and reflect it in a horizontal direction, thereby improving the brightness of the light and the clarity of the display screen.

The application discloses a porous force-sensitive material, a flexible pressure sensor and a wearable smart insole for a plateau environment, in particular, is manufactured, and belongs to the field of sensor preparation.The porous force-sensitive material is prepared from raw materials with the following mass percentages: 5-15% of sodium phosphate, 35-55% of polyvinyl alcohol, 15-25% of glycerol and 5-10% of nano-bismuth telluride; and the method of "water medium dissolution + stirring dispersion + baking solidification" is adopted for preparation.The application solves the problems of poor measurement sensitivity of a traditional smart insole pressure sensor, a small measurement range, and easy damage and failure in a low-temperature plateau environment.

This invention discloses an upward-rotating and downward-rotating spray gun, belonging to the field of agricultural irrigation technology. Based on the original double-rotating spray gun, this invention is optimized for high-sediment-content water environments. It includes: an outer cylinder (1), a central water supply pipe (2), a drive rotating shaft (3), a planetary reduction mechanism (4), a high-speed recoil drive arm (5), and a low-speed spraying arm (6). The improvements are as follows: the base (7) is provided with first and second sealing rings (701, 702) to isolate sand and dust; the upper end face of the base and the central groove are provided with sand discharge holes (703); the lower end of the first water distribution chamber (501) is provided with a double sealing ring layer (504), and the high-speed recoil drive arm at the corresponding position is provided with a debris discharge hole (505); the top of the high-speed recoil drive arm is provided with a sealing thread sleeve (506) to cooperate with the upper sealing ring (507); the inner wall of the central water supply pipe (2) is provided with ribs (202) that have both reinforcement and flow guiding functions; the low-speed spray arm (6) consists of two bifurcated arms of different heights, with nozzles of different sizes installed at angles of 30-38° and 5-20° respectively to balance the reaction force. While maintaining the advantages of the original double swirl field, the present invention significantly improves the anti-clogging ability and operational balance, and is especially suitable for surface water irrigation with high sand content.

The utility model discloses a dust suppression spraying device for municipal engineering, which comprises a trailer, a loading disc, a high-pressure water pump and a water tank are respectively arranged above the trailer, the loading disc is arranged on the upper side of the trailer through a slewing bearing, a fog gun assembly capable of pitching and overturning is arranged above the loading disc through a support, the fog gun assembly comprises an axial flow fan and an atomizing cylinder, and the atomizing cylinder is arranged on the upper side of the loading disc. The axial flow fan is coaxially mounted at the tail part of the atomizing cylinder, the atomizing cylinder comprises a cylinder body, four radial spoke pipes are fixedly mounted at the tail part of the cylinder body, a spray pipe is fixedly mounted between the inner ends of the spoke pipes, a plurality of atomizing nozzles are uniformly mounted on the outer side of the spray pipe, and a plurality of spiral blades are uniformly welded on the inner wall of the cylinder body; the annular distribution pipe is welded to the outer side of the barrel, the outer end of the radial pipe is communicated with the distribution pipe, the spray pipe and the atomization spray head which are located in the center can improve the mixing uniformity of water mist and airflow and improve the dust suppression effect, and due to the guiding effect of the spiral blades, the ejected airflow is in a spiral shape, diffusion can be slowed down, and the ejection range can be increased.

An ultrasonic humidification, purification and disinfection system and method, wherein the ultrasonic humidification, purification and disinfection system comprises an ultrasonic atomization device, a mist guide pipe and a jet pressurization device; the ultrasonic atomization device is used for atomizing water and conveying the generated water mist to the mist guide pipe; one end of the mist guide pipe is communicated with the ultrasonic atomization device, and the generated water mist is guided out to the outside space through the other end of the mist guide pipe; the other end of the mist guide pipe is arranged in the jet pressurization device, and the jet pressurization device is used for generating airflow to pressurize and speed up the water mist guided out by the mist guide pipe. The water mist generated by the ultrasonic atomization device is guided out through the mist guide pipe, and the jet pressurization device generates airflow to pressurize and speed up the water mist guided out by the mist guide pipe, so as to increase the range of water mist spraying, improve the flow rate of the water mist, increase the evaporation speed of the water mist, avoid secondary air pollution, and also avoid the phenomenon that the water mist is condensed into small water droplets and then the humidification or disinfection is uneven, so that the user demand can be met and the user experience is high.

The invention belongs to the technical field of fire fighting, and particularly relates to a multiphase medium synergistic fire monitor, a fire fighting method and a use method. The multiphase medium synergistic fire monitor comprises an outer cylinder; the flow guide part is coaxially arranged in the outer cylinder, a conveying cavity is formed in the flow guide part, and an annular channel allowing a first medium to pass through is formed between the flow guide part and the outer cylinder; the rectifier is coaxially arranged in the outer cylinder, a conveying channel is arranged in the rectifier, and the conveying channel is communicated with the conveying cavity; and the conveying pipe is used for conveying a second medium and is connected with the conveying channel through the radial side wall of the rectifier.

The embodiment of the present application provides a piezoelectric sensor, which comprises a first pressing plate, a second pressing plate, a fixing assembly and a plurality of piezoelectric components. The second pressing plate is located on one side of the first pressing plate along a first direction, the piezoelectric components are arranged between the first pressing plate and the second pressing plate, and at least two piezoelectric components are located in the same plane perpendicular to the first direction. The fixing assembly is connected with the first pressing plate, the piezoelectric components and the second pressing plate respectively. The piezoelectric sensor can greatly improve the range.

The invention relates to an intelligent clenbuterol concentration mapping method based on Raman scattering space-time dynamic attenuation characteristics. According to the method, based on theoretical models of molecular dynamics and statistical physics, frequency-domain spectral information is inverted to a time-domain coherence function, a clenbuterol molecule'free state-cluster state 'double-pool dynamic model is established, and internal correlation between concentration and molecule aggregation state and coherence attenuation is revealed for the first time; abnormal samples can be automatically identified in detection of clenbuterol, and a quality scoring mechanism is provided; compared with traditional Raman spectrum detection, the sensitivity and the measuring range of the method are remarkably improved, the detection limit is reduced to 0.42 mu g / kg from 10-50 mu g / kg and is improved by 20-100 times, and the national standard requirement (1t, 0.5 mu g / kg) is met; the linear range of the measuring range is expanded from 1-2 orders of magnitude to 3-4 orders of magnitude (0.5-500 [mu] g / kg), and a high-residue full scene is covered by trace detection; the method can also be expanded to detection of other small molecules and does not depend on specific chemical properties of substances.

The utility model discloses an integrated flashlight. The integrated flashlight comprises a flashlight body, a PCBA board, a lamp panel and a battery piece, the lamp panel, the PCBA board and the battery piece are all installed on the flashlight body, the lamp panel and the battery piece are electrically connected to the PCBA board, and the lamp panel is provided with a main lamp bead, a UV lamp bead and a red and green laser lamp bead. The main lamp beads, the UV lamp beads and the red and green laser lamp beads are arranged on the lamp panel, so that the diversification of the lighting function is realized; the main lamp bead serves as a basic illumination light source, high-brightness and long-range light can be provided, and the requirement for large-range illumination in the dark environment is met; the UV lamp bead has an ultraviolet light emission function and plays an important role in the fields of industrial detection, medical disinfection, anti-counterfeiting identification and the like; the red laser has high penetrability and good visibility, and can be used for indicating a target position and positioning or marking at night or in a low-visibility environment; and the green laser has a farther visual distance and a clearer indication effect.

The utility model belongs to the technical field of recreation device, and disclose a kind of water cannon shooting interactive recreation equipment, including water cannon and target, water cannon includes cannon barrel and first controller, gas holder and water storage are provided in cannon barrel, gas holder is connected gas supply device by pneumatic cut-off valve, water storage is connected water supply device by pipeline;First controller is electrically connected with water switch and firing switch respectively, water switch is used to control water supply device to water storage water supply, firing switch connects pneumatic cut-off valve, for controlling pneumatic cut-off valve to shoot in the air in gas holder, to make the water in water storage in the form of water column shoot;Target includes vibration sensor, second controller, vibration switch and air cylinder;Vibration sensor is electrically connected with second controller, for sensing the firing of water cannon emitted water column to target;Second controller is electrically connected vibration switch.The utility model has the advantages of improving water column range and precision, enhancing interactive feedback effect.

The application discloses an air inlet channel wall surface pressure measuring device. The device comprises a pressure sensor array arranged in the air inlet channel; the pressure sensor array comprises a group of blind holes arranged on the inner wall of the air inlet channel and arranged along the axial direction of the air inlet channel; the blind holes are divided into an upper space with a larger radial dimension and a lower space with a smaller radial dimension by a step structure arranged on the inner wall of the blind hole; the lower space is sealed by an elastic diaphragm arranged at the bottom of the upper space and an air cavity with a standard atmospheric pressure is formed in the lower space; an optical fiber grating is arranged on the upper surface of the elastic diaphragm; the remaining space in the upper space is filled with the same material as the elastic diaphragm; the optical fiber gratings in the blind holes are sequentially connected through a connecting optical fiber embedded in the inner wall of the air inlet channel and then connected to a demodulation module through the tail of the air inlet channel. The application further discloses a surge determination method based on the air inlet channel wall surface pressure measuring device. The application can realize dynamic high-precision measurement of the flow field of a supersonic air inlet channel.

This invention relates to a pneumatic heavy-duty liquid injection device, belonging to the field of injection technology. The injection device includes a gas storage device, a liquid storage device, a nozzle body, and a control system. The gas outlet of the gas storage device is connected to the gas inlet of the liquid storage device via a pipeline equipped with a pressure reducing valve and a one-way valve, for inputting gas at a set pressure into the liquid storage device. The liquid storage device is equipped with a pressure sensor and a pressure relief valve. One end of the nozzle barrel in the nozzle body is connected to the opening of the liquid storage device via a pipeline, and the other end is connected to a cylinder opening valve. A front support and a rear support of the nozzle body support the nozzle body. The liquid injection valve in the cylinder opening valve is connected to the liquid injection pipe of the nozzle. The control system controls the opening and closing of the injection device, and the pressure sensor sends the monitored pressure data to the control system in real time. The injection device is used on heavy-duty vehicles and has a long injection distance.

This utility model discloses a 40mm tear gas smoke-generating riot control round for riot guns, relating to the field of riot control ammunition technology. The utility model includes a projectile assembly with a launching component at its bottom, and the projectile assembly includes an upper projectile body. By employing a high-low pressure chamber staged pressurization structure, the high-pressure chamber first accumulates energy during propellant combustion, then releases it to the low-pressure chamber through a pressure relief hole, propelling the projectile assembly to embed in the rifling and fly at high speed, increasing the range to ≥200m, with a maximum of 400m. This solves the problems of insufficient chamber pressure and limited range caused by the single high-pressure chamber design in existing technologies, meeting the needs of long-range law enforcement. It uses CS instead of CN as the irritant; CS is chemically stable, non-carcinogenic after combustion, has low skin irritation, and degrades quickly, resulting in minimal environmental impact. This solves the problems of toxic residues and health hazards associated with CN irritants in existing technologies, improving the safety of weapon use.

The present application relates to a kind of water cannon and its control method, specifically to a kind of metal hose water cannon and its control method, solve the technical problem that existing water cannon is difficult to simultaneously realize fluid flow state good and water cannon compactness, and there are more elbow pipe, bending angle is larger, energy loss is caused easily, not conducive to the performance of water cannon is improved.The metal hose water cannon further includes first electric push rod, first mechanical control unit, second mechanical control unit, third mechanical control unit, horizontal rotary seat and metal hose;Third mechanical control unit is used to make horizontal rotary seat, metal hose and cannon head rotate around cannon base to realize water cannon horizontal rotation angle adjustment;First mechanical control unit is used to adjust the center arc line position and form of metal hose with first electric push rod collaborative movement;Second mechanical control unit is used to adjust the rotation angle of cannon head with first electric push rod collaborative movement.The present application method can efficiently and stably control water cannon position and angle.

The application discloses a ventilated super-cavitation projectile suitable for underwater launching, which comprises a tail, a sealing diaphragm, a blunt charge column and a bullet head. The tail is provided with a stepped center jet hole. The bullet head is provided with a flat head structure, and a center gas production chamber is arranged at the bottom of the bullet head. The blunt charge column is arranged in the center gas production chamber, and 4-12 equidistantly distributed radial jet holes are arranged at the tail end of the center gas production chamber. The bullet head and the tail are connected through threads, and the sealing diaphragm is arranged at the connection position. The ventilated super-cavitation projectile can meet the requirements of underwater gas curtain type low-resistance high initial velocity launching, and can also realize ventilation and drag reduction during the underwater navigation of the projectile, so that the initial velocity and the range of the projectile are improved.