87results about How to "Lower the volume" patented technology

The present application provides a method for diagnosing and / or evaluating the presence or absence, severity or degree of the improvement of a retinal disease in a subject, which comprises determining and / or evaluating circulatory parameters, retinal function, retina morphology and / or visual relating quality of life (QOL).

The invention discloses a screw prestressing prefabricated radial beam slab type fan foundation and a construction method thereof. The screw prestressing prefabricated radial beam slab type fan foundation comprises a beam pier combined prefabricated part, an anchor disc, a horizontal anchor rod, a vertical anchor bolt, a connecting plate, an upper anchor plate and a lower anchor plate. The fan foundation is formed by annularly arranging and splicing a plurality of beam and pier combined prefabricated parts, a plurality of rows of horizontal reserved hole channels are formed in the step-variable beam plate, and horizontal anchor rods are anchored to a connecting anchor plate in the center of the foundation and the outer side of the foundation through the reserved hole channels to lock the foundation. And connecting plates are arranged between the variable-step beam plates, so that the consistency of the whole structure is improved. A vertical preformed hole is formed in the middle pier on the inner side of the step-variable beam plate, and fan tower tube anchor plate grooves are reserved in the upper surface and the lower surface of the middle pier, so that vertical anchor bolt installation is facilitated. The foundation is reasonable in form stress, and the collision problem between the horizontal anchor rods is avoided by adopting a connection anchor plate pulling mode; and grouting-free dry operation on a construction site can be achieved, installation is convenient, efficient and environmentally friendly, and the problem that the temperature of a core area is too high in the traditional fan foundation construction process is effectively solved.

In the device, a plurality of low-temperature plasma reactors are fixed in an absorption liquid storage tank in an array manner, a quartz tube is immersed in liquid in the absorption liquid storage tank, and a plurality of through micropores are uniformly distributed in the bottom of the quartz tube; the lower end of the connecting fastener is fixed with the orifice of the quartz tube, and the side edge of the connecting fastener is provided with an air tube; the metal electrode is fixed through the upper end of the connecting firmware and extends into the quartz tube to serve as a high-voltage electrode; the discharge power supply is connected with the metal electrode and the ground electrode, so that the low-temperature plasma reactor generates bubble plasma in liquid; the electrolytic cell is communicated with an absorption liquid storage tank through a switch pipeline, the working electrode is provided with foamy copper as an electro-catalysis material, and the working electrode, the platinum wire counter electrode and the silver / silver chloride reference electrode form a three-electrode electrochemical structure to electrocatalytically synthesize ammonium nitrate in the electrolytic cell.

The utility model belongs to the technical field of cooking equipment, and particularly relates to a waterproof host of a cooking device and a food processor, an electrical element is arranged in the host, an air inlet and an air outlet which can be opened or closed are arranged on the surface of the host, and when the air inlet and the air outlet are opened, air flow can enter and exit the interior of the host. Compared with the prior art, the waterproof host is applied to the cooking device, when food materials need to be processed on the cooking device, the air inlet and the air outlet are opened, it is ensured that airflow can enter and exit from the host, the heat dissipation effect is guaranteed, and when the host needs to be cleaned, the waterproof host can be conveniently cleaned, and the waterproof host is convenient to clean. By closing the air inlet and the air outlet, external water is prevented from entering the main machine, the sealing effect is achieved, and therefore the main machine can be directly cleaned, and cleaning is more thorough and cleaner.

The invention relates to the technical field of steel-concrete composite beams, in particular to a prefabricated reinforced concrete through-type shear nail groove bridge deck slab and a steel-concrete composite structure.The prefabricated reinforced concrete through-type shear nail groove bridge deck slab comprises a first deck slab, a first longitudinal connecting groove is formed in the first deck slab and penetrates through the first deck slab, and a second longitudinal connecting groove is formed in the second deck slab and penetrates through the first longitudinal connecting groove; first longitudinal connecting grooves are formed in the first face plate and divide the first face plate into a plurality of first face plate units, a plurality of penetrating reinforcing steel bars are embedded in the first face plate, the first face plate units are connected through the penetrating reinforcing steel bars, and the first longitudinal connecting grooves are used for being matched with shearing force connecting pieces arranged on a steel structure in a strip mode. And the first panel and the steel structure are connected into a whole. The stress at the joint of the bridge deck slab and the steel beam is uniformly distributed, and the assembly precision requirement is low.

The invention relates to the technical field of intelligent robots, and particularly discloses an intelligent robot with scene perception capability and a method, and the intelligent robot with scene perception capability uses a camera of the robot to collect a pose monitoring video of a target old-age object. Meanwhile, a communication module of the robot is used for receiving a time queue of the pulse data, collected by the intelligent wearable device, of the target elderly object; then, based on the perceived data, the intelligent robot can identify the current situation and adjust the behavior of the intelligent robot according to the current situation so as to select a more appropriate behavior strategy. Therefore, different requirements of the old people in the scene can be predicted through the sensing information of the intelligent robot for the scene, so that personalized service content is customized, for example, when it is detected that the old people are resting, the volume can be reduced to avoid disturbing, and more personalized and intelligent health care service support is provided.

The invention belongs to the technical field of storage and transportation equipment, and discloses a goods shelf conveying platform and a preparation method thereof. The goods shelf conveying platform comprises a supporting frame and a carrier plate assembly. The supporting frame comprises a plurality of first stand columns arranged at intervals and a plurality of second stand columns arranged at intervals, and the first stand columns and the second stand columns directly face each other in a one-to-one mode. A first main beam is connected between any two adjacent first stand columns, a second main beam is connected between any two adjacent second stand columns, and a third main beam is connected between each first stand column and the corresponding second stand column. The carrying plate assembly comprises a plurality of bearing plates which are spliced in sequence, and the bearing plates are erected on the bearing frame and connected with the first main beam and the second main beam in an assembled mode. The bearing plate comprises two reinforcing meshes and a concrete structure, and the two reinforcing meshes are arranged in the concrete structure at intervals in the thickness direction of the concrete structure. According to the goods shelf conveying platform, normal operation of a transport vehicle can be guaranteed, the working efficiency of a warehousing system is prevented from being affected, and noise pollution can be reduced.

The present invention relates to a shock absorber (100) comprising a cylinder (7), a piston rod (2) and a piston (6) attached to said piston rod (2). The piston (6) is arranged in said cylinder (7) and a damping chamber comprising a damping media is defined in the cylinder (7). The shock absorber (100) further comprises a gas spring in functional connection with the damping chamber and at least one characteristic of the gas spring is adjustable by a user-adjustable feature arranged within the piston rod, wherein said user adjustable feature affects the enclosing area of the damping chamber, thereby indirectly affecting the gas spring through the functional connection.

The present application provides a battery cell, a battery, and an electrical device. The battery cell includes a case, a first battery cell, and a second battery cell, the first battery cell being arranged inside the case, the first battery cell including a first main body part, a first electrode lead-out component extending from a first side of the first main body part, and a second electrode lead-out component extending from a second side of the first main body part, the first side and the second side being arranged oppositely, the second battery cell being arranged inside the case, the second battery cell including a second main body part, a third electrode lead-out component extending from a third side of the second main body part, and a fourth electrode lead-out component extending from a fourth side of the second main body part, and the third side and the fourth side being arranged oppositely; wherein the first battery cell and the second battery cell are arranged in a first direction, the first side and the third side are adjacent and arranged oppositely, and the first electrode lead-out component and the third electrode lead-out component are electrically connected. The present application helps reduce the volume of the battery cell by optimizing the arrangement of the internal structure of the case.

A valuable metal recovery method includes: screening a battery slag from lithium ion battery waste; adding an acid to the battery slag; adding a sulfur compound the leachate; filtering the first processed product to obtain a first processed filtrate; adding a sulfur compound to the first processed filtrate; filtering the second processed product to obtain a second processed filtrate; adding calcium hydroxide to the second processed filtrate; filtering the third processed product to obtain a third processed filtrate; adding sodium carbonate to the third processed filtrate; filtering the processed product; heating the fourth processed filtrate; blowing carbon dioxide or adding a carbonate; and filtering the processed product, wherein a pH of the second processed product is higher than a pH of the first processed product, and a pH of the third processed product is higher than the pH of the second processed product.

The invention relates to the technical field of tunnel construction, in particular to a construction method of an existing underground tunnel extension emergency channel and the emergency channel, and the construction method comprises the following steps: determining the point positions of anchor rods and joint bars and drilling, installing the anchor rods and the joint bars at the drilling positions, erecting a scaffold, installing a concrete pouring template and skeleton steel bars on the scaffold, and installing a concrete pouring template and skeleton steel bars on the scaffold. The upper end of the concrete pouring formwork is connected with the scaffold, the lower end of the concrete pouring formwork makes contact with the inner wall of the underground tunnel and is higher than the average water level of the underground tunnel for many years, concrete is poured on the inner side of the concrete pouring formwork, the formwork and the scaffold are dismantled after solidification, the emergency channel with the corbel-shaped cross section is obtained, maintenance of the emergency channel is conducted, and the steps are repeated. And the whole line construction of the underground tunnel emergency channel is completed. Compared with a traditional emergency channel and a construction method, the construction method has the advantages that the project amount and the total investment can be greatly reduced, forced shutdown caused by rising of the water level in the flood season can be avoided, and the construction method is short in construction period, high in operability and good in economical efficiency.

The application provides an example in the technical field of signal processing, and provides an audio device, an echo cancellation method and an apparatus. The audio device comprises a loudspeaker, a microphone, and a processor connected with the microphone and the loudspeaker respectively. The processor is configured to: acquire an audio signal frame received by the microphone; perform echo cancellation processing on the audio signal frame; if a nonlinear filter suppression coefficient used in the echo cancellation processing is less than a coefficient threshold value, and a current call state is detected as a double-talk state, then add 1 to a count value; if the count value is greater than or equal to a count threshold value, then reduce the volume of the loudspeaker; if the count value is less than the count threshold value, then perform the acquisition of the audio signal frame received by the microphone; if the nonlinear filter suppression coefficient is greater than or equal to the coefficient threshold value, or the current call state is detected as a non-double-talk state, then clear the count value, and perform the acquisition of the audio signal frame received by the microphone. The application can effectively eliminate echo.

The invention relates to a centrifugal compressor. The present invention addresses the problem of reducing the volume of airflow sound in a centrifugal compressor provided with a casing treatment member. A centrifugal compressor is provided with: a compressor housing provided with an air introduction hole for introducing air toward an impeller, an annular part disposed on the inside of the air introduction hole, and a spoke part connecting the inner peripheral wall surface of the air introduction hole and the annular part; and a housing treatment member provided with a cylindrical portion provided upstream of the annular portion in the air introduction direction in the air introduction hole, and a wing-shaped portion extending from the cylindrical portion toward the downstream side in the air introduction direction. A main flow path for air is formed inside the cylindrical portion, and the wing-shaped portion is engaged with the annular portion and forms, together with the annular portion and the spoke portion, a sub-flow path branched from the main flow path and rejoined to the main flow path. The number of the spoke parts and the number of the wing-shaped parts are the same, and the arrangement positions of the annular parts of the spoke parts in the circumferential direction and the arrangement positions of the wing-shaped parts in the circumferential direction of the annular parts are the same positions.

An aerosol generation device, a heater (30) for an aerosol generation device, and a preparation method. The aerosol generation device includes: a cavity, configured to receive an aerosol-forming product A; and a heater (30), at least partially extending in the cavity, to heat the aerosol-forming product A received in the cavity, where the heater (30) includes: an induction coil (32), configured to generate a variable magnetic field; and a susceptor (31), configured to be penetrated by the variable magnetic field to generate heat, where the susceptor (31) is formed by molding a moldable sensing material on the induction coil (32), and wraps the induction coil (32). In the aerosol generation device, the susceptor (31) is formed and is integrated into one body on the induction coil (32) by molding, which is advantageous for miniaturization of the device.

The present invention discloses a belt-transmission angle attachment head, including a housing, a power mechanism, a transmission mechanism and a spindle; the power mechanism and transmission mechanism are arranged in the housing; the power mechanism includes a servo motor and a reducer, the servo motor is connected to the reducer, and an input shaft of the reducer is vertically arranged with respect to an output shaft of the reducer; the transmission mechanism includes a driving wheel, a transmission belt and a driven wheel, and the driving wheel is mounted on the output shaft of the reducer; a side of the spindle is mounted on the housing via a rotating shaft, an end of the rotating shaft away from the spindle is mounted with the driven wheel, the driving wheel and the driven wheel are connected via the transmission belt, and the spindle and the power mechanism are located on the same side of the transmission mechanism. The angle attachment head has advantages such as small size, simple structure and suitable for deep cavity machining.

Disclosed in the present invention are a linkage mechanism, a base, and a surge protection device. The linkage mechanism comprises a linkage swing rod and transmission components, wherein the linkage swing rod is arranged to be rotatably connected, and is provided with a trigger portion capable of triggering a switch when rotating and at least two stress portions arranged spaced apart from each other on one side of an axis of rotation of the linkage swing rod; one transmission component is arranged corresponding to each of the stress portions; and the transmission components are arranged in such a way that any of the transmission components applies a pushing force to the stress portion to rotate the linkage swing rod, and thus the trigger portion triggers the switch. According to the surge protecting device using the linkage mechanism provided in the present invention, a module failure signal can be sent out when any surge protection module fails under the condition where only one microswitch is arranged, which not only simplifies the structure of the surge protecting device and reduces the volume, but also reduces the cost.

An equalizer includes a graphic equalizer circuit, a first multiplication circuit, a second multiplication circuit, a summing circuit, and a gain control circuit. The graphic equalizer circuit processes a first input signal and outputs a first output signal and a second output signal. The first multiplication circuit multiplies the first output signal by one of an adjustable gain value and a fixed gain value to produce a first adjusted output signal. The second multiplication circuit multiplies the second output signal by the other of the adjustable gain value and the fixed gain value to produce a second adjusted output signal. The summing circuit combines the first adjusted output signal and the second adjusted output signal to produce an equalizer output signal. The gain control circuit dynamically adjusts the adjustable gain value based on the equalizer output signal.

A tactile sensor (101, 102, 103, 104, 105, 2520), a touch event detection method, a sensing device (2500), and a robot (10), which relate to the field of sensor design. The tactile sensor (101, 102, 103, 104, 105, 2520) comprises a sensing unit (21), an elastic body supporting housing (22) and a base (23), wherein the sensing unit (21) is arranged in an inner cavity enclosed by the elastic body supporting housing (22) and the base (23); and the sensing unit (21) comprises at least two light sources (211), a photodetector (212) and a reflector (213), the photodetector (212) being arranged on the base (23), the at least two light sources (211) being arranged around the photodetector (212) on the base (23), and the reflector (213) being arranged at the top of the inner cavity of the elastic body supporting housing (22). By means of combining a plurality of light sources (211) and one photodetector (212), the number of photodetectors (212) used is reduced, so that the volume of the tactile sensor (101, 102, 103, 104, 105, 2520) is reduced.

The invention discloses a passive containment spraying system which comprises a gas storage tank, a pneumatic isolating valve, a pressure reduction pore plate, an out-shell isolating valve and a control module, wherein the gas storage tank, the pneumatic isolating valve, the pressure reduction pore plate and the out-shell isolating valve are arranged outside a containment and connected through a pipeline, and the control module is communicated with the pneumatic isolating valve and the out-shell isolating valve; the water storage tank is communicated with the depressurization pore plate, a cooling medium can be accommodated in the water storage tank, and the water storage tank is communicated with the spray header through an isolating valve outside the containment; expandable gas can be contained in the gas storage tank, reaches the water storage tank after passing through the pneumatic isolation valve and the pressure reduction pore plate, and drives a cooling medium to flow through the spraying header. The passive containment spraying system provided by the embodiment of the invention does not depend on a power device, drives the system to operate in a pressure accumulation mode, and is suitable for removing radioactivity in the containment after an accident, so that the radioactivity released to the environment is reduced, and the safety and reliability of a nuclear power plant are improved.

Disclosed are a test button loop device and a circuit breaker provided with the test button loop device. The test button loop device includes an elastic button and a conductive member which form a test loop, wherein the elastic button includes a contact portion matched with the conductive member, and a button member pressing the contact portion; and the conductive member is in linkage with a handle mechanism or an operating mechanism or a moving contact of the circuit breaker. The handle mechanism or the operating mechanism or the moving contact of the circuit breaker drives the conductive member to approach the contact portion when the circuit breaker is closed, and the button member at this time is pressed to drive the contact portion to move and can contact the conductive member for the test loop to be switched on. The handle mechanism or the operating mechanism or the moving contact of the circuit breaker drives the conductive member to move away from the contact portion when the circuit breaker is opened, and the button member at this time is pressed to drive the contact portion to move will not be able to contact the conductive member. The test loop in the present invention only has a break point formed by the contact portion and the conductive member, but has a protection effect of a double-break-point structure, which can prevent the live-working problem after opening caused by reverse wiring, and also has the advantages of simple structure, high assembly efficiency and high reliability.

The present invention is relative to a damper (5) adapted to regulate an air flow orifice (7) for passing of an air flow in a ventilation duct (2), wherein the damper (5) comprises a plate (11), a regulating device (12) and a mounting element (13), wherein the mounting element (13) is resilient and comprises a first and a second end (19, 20), the distance (L1, L2) between the first and the second end (19, 20) being arranged to change when the mounting element (13) bends resiliently, and wherein the first and a seconds end (19, 20) are adapted to cooperate with an inside of the ventilation duct (2) to removably mount the damper (5) in the ventilation duct (2), and a ventilation system (1) comprising such a damper (5).

The present invention relates to a foldable structure for an easy-to-carry electric scooter comprising: an operating handle including two grips; a handle post which is attached to a lower part of the operating handle and at the bottom of which a front wheel is drivably installed; and a footrest which is connected to the bottom of the handle post at the rear of the front wheel and has a rear wheel installed at the rear end thereof, wherein the handle post has a carrying handle for hand gripping when carrying the scooter, the carrying handle being retractably built in the handle post at one side thereof; wherein the carrying handle is positioned at the front-sided width-directional center of the upper post, in order to ensure that an imaginary line connecting a support point of the front wheel in contact with the ground and a gripping point of the carrying handle passes through the center of gravity of the electric scooter, in a state of pulling out and extending the upper post from the middle post when carrying the electric scooter, and thereby the electric scooter does not rotate and remains stable even when subjected to vibrations or impacts; wherein a groove is formed in the front-sided center of the upper post into which the carrying handle is received; wherein one end of the carrying handle is hinged inside the groove such that a gripping portion of the carrying handle can be rotated and extracted; and wherein the gripping portion can be formed to include a stepped portion on one side, which is catchable to facilitate extraction.

On the support portion 20 of the frame 2, a plurality of hexagonal recesses 20a and through holes 20b are formed, arranged so that their edges are adjacent to each other. This allows a portion of the vibration (sound) from when the drumhead 4 is struck to be released to the outside through the through holes 20b, thus suppressing the echo of the vibration within the frame 2. Furthermore, the rigidity of the support portion 20 (frame 2) can be effectively improved by the bottom wall 20c of the recesses 20a or the side wall 20d dividing the recesses 20a and the through holes 20b. Therefore, the rigidity of the frame 2 can be increased while reducing the volume when the drumhead 4 is struck.

The invention discloses a loudspeaker control method, device and system and a storage medium, and the method comprises the steps: judging whether a first passenger has the authority of a vehicle owner or not when the audio data of the first passenger is collected under the condition that a vehicle plays an audio; when the first passenger has the authority of the vehicle owner, identifying the audio data, and judging whether a second passenger exists in the audio data, the second passenger being a passenger on the current vehicle; when a second passenger exists in the audio data, determining the sitting position of the second passenger, and reducing the volume of a loudspeaker corresponding to the sitting position of the second passenger; wherein the corresponding relation between the seat and the loudspeaker is preset. By adopting the scheme provided by the invention, the volume of the loudspeaker can be automatically adjusted, a driver does not need to manually adjust the volume, and the driving safety and the user experience are improved.

A magnetic attraction incubation mechanism of an automatic molecular diagnostic instrument, comprising: a magnetic attraction assembly (2) used for magnetic attraction of a reaction chamber (6) containing a sample liquid and an incubation assembly (4) used for heating the reaction chamber (6), and further comprising: a driving device (5) for driving the incubation assembly (4) and the magnetic attraction assembly (2) to be alternately close to the reaction chamber (6), the magnetic attraction assembly (2) and the incubation assembly (4) being both connected to the driving device (5). Switching of an incubation operation and a magnetic attraction operation can be achieved, and an incubation part and a magnetic attraction part effectively work in conjunction with each other by means of a linkage mechanism, so that the overall structure is effectively simplified, the space is saved, and a detection speed of the sample liquid can further be increased.

The application discloses a near-isothermal compression device and a compression system using the same. The near-isothermal compression device comprises a compression cylinder, an air-water separator, and a water supplement tank. The compression cylinder is connected with a low-pressure gas storage tank through an air inlet. The air-water separator is connected with the compression cylinder through an air outlet of the compression cylinder, and is used for separating air and water of the compression cylinder. The air-water separator is connected with a high-pressure gas storage through an air outlet. The water supplement tank is connected with the air outlet of the compression cylinder, and is connected with the air-water separator through a water inlet. A radiator is connected with the water outlet of the compression cylinder and the water outlet of the water supplement tank through inlets, and is used for radiating water in the radiator. The near-isothermal compression device ensures that the last stage of the compression process is close to a near-isothermal process. The compression system has less heat surplus and total power consumption, and the compression power consumption is significantly reduced, so that the overall efficiency of the system is further improved.

The present application discloses an artificial intelligence (AI) task control method, a terminal, a base station, and a storage medium. The base station comprises: a first functional module configured to perform at least one of the following functions by interacting with the terminal: AI task control, AI task execution, network decision generation, and data management for the terminal.

A battery pack and a vehicle are provided. The battery pack includes a base plate assembly, a side beam assembly, and at least one battery cell group. The side beam assembly is disposed at an outer periphery of the base plate assembly. The side beam assembly and the base plate assembly define an accommodating cavity, and the accommodating cavity includes at least one installation area. The installation area is provided with the battery cell group. The battery cell group includes a plurality of battery cells, and the plurality of battery cells are fixedly disposed on the base plate assembly. According to the battery pack and the vehicle, each battery cell is fixedly disposed on the base plate assembly in the installation area. The plurality of the battery cells disposed in installation area defines a battery cell group. The battery cells are de-modularized into groups, which reduces a number of parts, lowers costs, reduces volume, and improves energy density of the battery pack.

A thermal insulation system for high-temperature industrial tanks and equipment, comprising a thermal insulation material (2), a covering system (3), and a support system. The covering system (3) includes covering sheets (5) attached only to the support system. Adjacent covering sheets (5) overlap longitudinally, creating overlapping sections (8) comprising an upper portion (9) of one adjacent covering sheet (5) and a lower portion (10) of the other adjacent covering sheet (5). At least one substantially omega-shaped longitudinal assembly fastener (11) is located at each overlapping section (8), on the inner sides of the covering sheets (5), which has a first end (12) attached to the upper portion (9).), a central part (13) separated from the cover sheets (5) and a second end (14) coming into contact with the lower part (10) of the covered part (8) and pressing on said lower part (10).