96results about How to "Not affected by the external environment" patented technology

The invention discloses a grass planting system based on soilless culture. The system comprises an incubator body which can be sealed manually, a temperature control unit, an illumination control unit, a moisture control unit and a central control unit, wherein the incubator body is internally provided with a grass culture unit, the temperature control unit is used for controlling and regulating the ambient temperature in the incubator body, the illumination control unit is used for controlling and regulating the illumination supply in the incubator body, the moisture control unit is used for controlling and regulating the moisture supply in the incubator body, and the central control unit is respectively connected with the temperature control unit, the illumination control unit and the moisture control unit electrically and is used for jointly controlling the temperature control unit, the illumination control unit and the moisture control unit. The system can be used for automatically controlling the growth environment of grass, the growth of grass is completely isolated from the external environment and is not influenced by the external environment, the automation degree of the planting system is improved greatly, the growth time of grass is shortened greatly, the culture efficiency is improved, and the yield of grass is large.

The invention discloses a vehicle-mounted vehicle driving deviation detection apparatus and detection method. The vehicle-mounted vehicle driving deviation detection apparatus includes a magnetic attraction seat, a vehicle terminal, and a wireless laser bar code scanner. The vehicle terminal is composed of a GPS positioning module, a single-chip microcomputer main control module, a data transmission and display module, an interface module, an alarm module and a power module. The host of a mobile station acquires the vehicle trajectory information in real time and sends the information to a reference station via a radio station in the host, a differential algorithm is formed in the system to obtain the high-precision mobile station coordinate, the deviation amount of the vehicle to be measured is processed and calculated through the main control chip of the single-chip microcomputer main control module, the result of the deviation amount is displayed on a four-bit digital display screen after the testing is finished, and the vehicle speed is displayed in the testing process in real time. The apparatus is simple in structure and convenient to detach, and can realize the display of the deviation amount and the vehicle speed, is suitable for automobile manufacture enterprises to do streamline test, and has wide market potential and application prospect.

The invention relates to the technical field of a slurry resistivity measuring device and relates to a slurry resistivity measuring device. The slurry resistivity measuring device comprises a slurry carrying device, an upper sealing cover and a lead wire base, wherein the upper part of the slurry carrying device is fixedly provided with the upper sealing cover, the lower part of the slurry carrying device is seated on the lead wire base, a carrying cavity capable of being used for carrying slurry is arranged inside the slurry carrying device, a power supply electrode and a measuring electrode are fixedly arranged on the inner wall of the carrying cavity, the measuring electrode can be used for measuring the slurry resistivity, a wiring groove is arranged on the lead wire base, and a wiring terminal is arranged in the wiring groove and is electrically connected with the measuring electrode through a conducting wire. The slurry resistivity measuring device has the advantages that the structure is reasonable and compact, the use is convenient, the slurry is carried through the slurry carrying device made of organic glass, the heat insulation is realized through the upper sealing cover and the lead wire base, and the temperature and the slurry resistivity can be simultaneously measured through a temperature probe. The slurry resistivity measuring device has the characteristics that the exhaust function is good, the influence caused by external environment is avoided, the heat insulation and humidity preservation performance is good, the measurement is accurate, the cleaning is convenient, and simplicity, convenience and high efficiency are realized.

The invention is a device of measure distance finding ability of laser finder / range finder, and its character of composition: in the forward direction of the laser beam emitted by a laser emitting system of the laser finder, in sequence, it includes transmitting-reflecting mirror, reflecting mirror, attenuator, and simulated object, where there is an energy meter set in the transmitting direction of the transmitting-reflecting mirror, which makes an angle of 45 degrees with the light beam, so does the reflecting mirror and the two mirrors play the same role in turning the laser beam emitted to make the laser beam coaxial with the laser receiving system of the laser finder; also waveform display system. It has the advantages of simple device, convenient operation, indoor testing, no influence of environment, high measuring precision, etc.

The embodiment of the invention provides a public traffic passenger flow information acquisition method and system based on an RFID (radio frequency identification) technique. The public traffic passenger flow information acquisition method comprises the following steps of: acquiring get-on information of each site by an identification device of a high-frequency label of a public double-frequency card; acquiring get-off information of each site by the identification device of an ultrahigh-frequency label of the public double-frequency card; automatically obtaining site information of each site by a GPS (global position system); transmitting the acquired get-on information, the acquired get-off information and the acquired site information of each site to a server in real time; and generating original passenger flow data according to the get-on information, the get-off information and the site information of each site by the server. According to the public traffic passenger flow information acquisition method disclosed by the invention, a whole information acquiring process is automatically identified and acquired through a vehicle-mounted device without outside environment influence, does not need manual interference, can uniquely identify passengers, improves the precision and the efficiency of the acquired public traffic passenger flow information, can be realized by a radio frequency technique at the same time and has lower use cost.

The invention discloses a novel built-in basin-type insulator and assembly, comprising a first shell, a second shell, a first conductor, a second conductor, a third conductor and a built-in basin-typeinsulator. A first flange, a second flange, the first conductor and the built-in basin-type insulator are located inside the first shell. The built-in basin-type insulator of the invention is completely enclosed in the shell, is not affected by the external environment and has a long service life. The sealing structure of the built-in basin-type insulator is inside the shell. Even if leakage occurs, there is only leakage between two air chambers, and gas leakage to the outside will not be caused. The device is equipped with particle trappers on both sides, which prevents the jumping particlesinside the device from sticking to the built-in basin-type insulator to cause insulation accidents.

The invention discloses an agricultural greenhouse with high stability, and relates to the technical field of agricultural greenhouses. The agricultural greenhouse comprises the ground, a greenhouse ceiling is fixedly connected to a lifting threaded block, a water collection device is arranged in the middle of the greenhouse ceiling, a limiting slide rail is fixedly connected to one side of a right supporting frame, and a pneumatic rotating rod penetrates through and is rotatably connected to the interior of a first bearing; pneumatic blades are fixedly connected to the two sides, close to thetop, of the pneumatic rotating rod, a transmission shaft penetrates through the interior and is rotatably connected to the interior of a second bearing, and a first transmission wheel and a second transmission wheel are fixedly connected to the left and right ends of the transmission shaft respectively. According to the agricultural greenhouse with high stability, the purposes that in gale weather, the greenhouse ceiling is automatically lowered to be prevented from being blown over, thus the economic loss and personnel injuries are lowered, vegetables, melons and fruits are not influenced bythe external environment, the greenhouse is prevented from collapsing under pressure of accumulation water, the stability of the agricultural greenhouse is improved, rainwater is collected to irrigate the vegetables, and the water resource is saved are achieved.

Disclosed is a pressure-resistant-container gas leakage detecting device for a vehicle to which a discharge tube casing is attached. The pressure-resistant-container gas leakage detecting device for a vehicle which is provided comprises: a casing comprising a first casing member, and a second casing member that is coupled to the first casing member so as to form an internal space; a pressure-resistant container to which is coupled a body part inside the casing, and which is formed so as to have a discharge tube that allows gas to be injected from and discharged to the outside; a discharge-tube casing for covering the discharge tube; a first gas leak detecting sensor attached to the discharge-tube casing; a corrosion-preventing gas which is injected between the pressure-resistant container and the casing, and is filled so as to be higher or lower than atmospheric pressure; and a gas pressure detecting sensor which is coupled to the casing, and detects when a change occurs in the pressure of the corrosion-preventing gas.

A ceramic chip assembly is provided. The ceramic chip assembly includes a ceramic base, a plurality of external electrodes, a pair of cylindrical metal lead wires, and an insulating protection material. The ceramic base has electrical characteristics of a semiconductor. The pair of external electrodes is oppositely formed on both side surfaces of the ceramic base, respectively. The cylindrical metal lead wire has one end thereof electrically and mechanically connected to the external electrodes by an electrical conductive adhesive, respectively, and has an external diameter identical to or greater than the thickness of the ceramic base. The insulating protection material includes a pair of insulating films and an insulating coating layer.

The invention discloses a saturable absorber mirror based on graphene and a manufacturing method thereof. The manufacturing method comprises the following steps: growing graphene on a large-area substrate, then coating a silicon dioxide protective layer on the surface of the graphene, cutting into small pieces, performing smooth butt joint on the smooth end surface of an optical fiber and surfaces of the small pieces coated with silicon dioxide, and finally fixing and packaging the optical fiber and the small pieces, thus manufacturing the novel saturable absorber mirror based on graphene. The graphene serving as a saturable absorber has the advantages of low saturation intensity, ultra-fast recovery time, adjustable modulation depth, wavelength independence and the like. No damage is caused to the graphene in the preparation process, so that the complete chemical structure is kept; the silicon dioxide protective layer is coated to prevent the graphene from damage and oxidation and achieve the effect of reducing reflection of impurities; and after packaging, the absorber mirror is not influenced by the external environment. Combined with the specific structural advantage of the absorber mirror which is simple and easy to implement, the manufacturing method provided by the invention is simple, high in efficiency and low in cost, and can realize large-scale industrialization.

The invention discloses a wet sand screening machine for construction, which comprises a base, a screening box, a feeding hopper and a bracket; a screening device is arranged in the screening box, and the sand screening device includes an outer installation frame and a screen in the horizontal direction And the sloping plates located at both ends of the screen, cams are installed under the screen; several water spray pipes are installed on the side wall of the screening box above the sand screening device; a horizontal drain pan is installed below the discharge port , a sink is fixed on the base below the drain pan. The present invention sprays water on the sand through the water spray pipe provided, so that the fine sand follows the water flow through the screen, improves the passing speed of the fine sand, adheres to the screen, improves the efficiency of blanking, and can adapt to dry sand and sand Wet sand is not affected by the external environment, ensuring the use of sand, internal water recycling, and the water in the fine sand is also convenient for the subsequent use of sand.

The invention discloses multifunctional paint suitable for a battery box and a preparation method and application of the multifunctional paint. The multifunctional paint is prepared from graphene, water-base resin, a dispersing agent, a thickening agent, a cross-linking agent and water, and further optionally comprises one of or a combination of a flatting agent, a pH adjuster, an anti-wear agent,a flame retardant and an antifoaming agent; the water-base resin is composed of waterborne polyurethane resin and waterborne acrylic resin of which the feed mass ratio is (11:10)-(9:5), the thickening agent is a polyacrylic ester thickening agent DN-2222, and the cross-linking agent is a modified polycarbodiimide cross-linking agent XR-5580. The preparation method comprises the step that it is only needed that raw materials are mixed through a certain feeding mode. The invention provides the application of the paint in a coating of the outer surface of a battery box of a new energy electric vehicle. The paint can have excellent adhesion, alkali resistance, wear resistance, salt spray resistance, viscosity and other physical and mechanical properties while having an efficient heat dissipation function, and the efficient heat dissipation cannot be affected by the external environment.

The invention discloses a transparent fireproof paint used for lost foam, which comprises the following components by weight part: 30-40 parts of methylated amino resin, 20-30 parts of pentaerythritol triacrylate, 8-12 parts of amino acid sodium phosphate resin, 20-30 parts of melamine, 15-20 parts of ammonium polyphosphate, 2-4 parts of inorganic sodium phosphate, 1-3 parts of smog inhibitor, 10-20 parts of titanium dioxide, 5-7 parts of sulfate tritolyl phosphate and 7-9 parts of dispersant. The obtained fireproof paint has the advantages of no irritation, no pollution, good cohesiveness when being coated on the surface of the lost foam, beauty, stable chemical performance, excellent acid and alkali resistance and corrosivity, the paint coating with thickness of lower than 3mm has fireproof effect for 60-80 minutes, flame resistance is greatly increased, and usage life of the lost foam is prolonged.

The invention discloses an angular point detection method based on a visible light and infrared universal calibration plate. The calibration plate is composed of a calibration plate bottom plate and two rectangular sheets made of different materials. The two sheets made of different materials comprise metal sheets and non-metal sheets, and the adjacent rectangular sheets are made of different materials; the two materials have different absorption degrees on visible light and infrared spectrum photons, so that the calibration plate is enabled to be clear in imaging under a visible light cameraand an infrared camera; an identifier is arranged on a checkerboard to mark the position of an initial unit grid, world coordinates of corners on a calibration board are determined, sub-pixel-level corner coordinates of four points of the initial unit grid are detected on a shot checkerboard image, and then the sub-pixel-level corner coordinates are diverged outwards through a homography matrix tofinally complete corner detection. The calibration plate is combined with an angular point detection method, so that the detection effect is more accurate and reliable.

The invention relates to a bathroom accessory product, in particular to a towel drying device for a bathroom accessory. The towel drying device for the bathroom accessory aims to achieve the technicaleffects that towels can be quickly dried without being influenced by the external environment, and the application range is wide. For achieving the technical effects, the towel drying device for thebathroom accessory comprises a processing box and the like. A support is arranged at the bottom of the processing box. A spin drying mechanism is installed in the processing box. A water pressure mechanism is installed on the top of the processing box. A water outlet pipe is connected with the right side of the bottom of the processing box. A valve is arranged on the water outlet pipe. According to the towel drying device for the bathroom accessory, because of the mutual cooperation between the spin drying mechanism and the water pressure mechanism, spin drying is carried out on towels beforehand; and meanwhile, because of the optimization on a drying mechanism and a rotation mechanism, the effects that the towels can be quickly dried without being influenced by the external environment, and the application range is wide are achieved.

The present invention relates to the technical field of information safety and provides an office management apparatus based on face identification and a using method. The office management apparatus based on face identification comprises a face information acquisition module, a face identification system module, an operation system user management module and an AC controller; the face information acquisition module comprises an eye socket information acquisition unit, a nasal type information acquisition unit and a facial outline information acquisition unit; the face identification system module is used for carrying out comparison and identification processing on acquired eye socket information, nasal type information and facial outline information and generating a login image; and the operation system user management module is used for transmitting the acquired face information to an office computer by the AC controller. According to the present invention, by acquiring the face image information, the office computer is logged in and verified, so that safety of an office computer operation system is ensured and technical information is effectively prevented from being leaked out; and users with similar faces are prevented from logging in the office computer, so that face identification accuracy is effectively promoted.

The invention relates to a finger vein attendance machine and a system thereof. The finger vein attendance machine comprises a touch display device, a finger vein reading device, a card reader, a network module, a USB interface, a Wiegand interface, a relay, an RS485 module and an SMART210 processor, wherein the SMART210 processor is respectively connected with the touch display device, the finger vein reading device, the card reader, the network module, the USB interface, the Wiegand interface, the relay and the RS485 module. The finger vein attendance system comprises the following modules: an attendance setting module, an entry module, an acquisition module and a verification module. The finger vein attendance machine and the system thereof disclosed by the invention have the following beneficial effects that 1, the machine and the system are difficult to counterfeit and are not influenced by an external environment; and 2, only a living body can be identified, and the realization precision is high.

The invention discloses a heat-insulation sock. The heat-insulation sock comprises a sock body, wherein a self-heating heat-insulation far-infrared fabric cloth layer is arranged on the bottom of the sock body; and aerogel heat-insulation layers are arranged on a sock surface and a sock leg. Heat is generated by using the self-heating heat-insulation far-infrared fabric cloth layer, the temperature of the sock can be automatically regulated according to the temperature of feet of a wearer, and blood circulating of the feet of the wearer is promoted; and the aerogel heat-insulation layers have a heat-insulation effect, the temperature of the feet of the wearer can be effectively kept and is not affected by an external environment, and a heat-insulation function of the sock can be fulfilled when in freezing cold days.

The invention relates to the field of poultry breeding, particularly application of a Jinghai yellow chicken 16-week weight molecular genetic marker. The molecular marker is composed of genes IGFBP-1, IGFBP-2 and STAT5b. The screening method comprises the following steps: extracting chicken genome DNA (deoxyribonucleic acid) of a sample to be detected, amplifying with specific primers disclosed as SEQ ID NO:1-6 to obtain 192bp, 250bp and 270bp target segments, carrying out SSCP analysis on the target segments, carrying out gel electrophoresis, carrying out color development by silver staining to obtain DNA SSCP spectra, and selecting an individual, of which the genotypes of the genes IGFBP-1, IGFBP-2 and STAT5b are the BB / KL / OP three-gene composite genotype, according to the banding patterns in the 3 spectra. The method provided by the invention has the advantages of obvious effect and simple and quick detection, and is free from the influence of the external environment.

The invention relates to the field of electric power, in particular to an annular tripping type zinc oxide arrester with fault indication. The annular tripping type zinc oxide arrester with fault indication comprises an insulator and an arrester body, wherein the bottom of the insulator is also fixedly provided with a mounting bracket; the bottom of the arrester body is fixedly provided with an insulation bracket; the mounting bracket and the insulation bracket are connected through a bolt; the top end of the arrester body is provided with a round compression ring; the bottom of the arrester body is connected with a tripping indicator; the tripping indicator comprises a shell, wherein a signal detector, a detonating groove and an identification groove are arranged in the shell; the openingof the detonating groove and the opening of the identification groove are fixedly provided with a sealing cover in a sealing way; an electric detonator is arranged in the detonating groove; an identification spring is arranged in the identification groove; one end of the identification spring is connected to the bottom surface of the identification groove; and the other end of the identificationspring is connected with an identification belt. The arrester is simple in installation, can effectively avoid single-phase ground connection faults, and can warn in time to repair when faults happen.

The invention relates to an early warning method and system for a vehicle. The method comprises the following steps: receiving detection data sent by a detection device, wherein the detection data comprises position information of the vehicle, current motion curve information of the vehicle and speed information of the vehicle; generating request information and sending the request information toa cloud server; receiving the information of traffic lights in front of the vehicle sent by the cloud server, wherein the information of traffic lights in front of the vehicle comprises current statesof the traffic lights, current positions of the traffic lights and remaining time in the current states of the traffic lights; according to the detection data and the information of the traffic lights in front of the vehicle, calculating actual time that the vehicle gets through the traffic lights; calculating the difference value between the actual time and the remaining time in the current states of the traffic lights, and if the difference value is greater than preset time, controlling a warning indicator to send out first warning information. The obtained information of the traffic lightsis not influenced by external environment through the cloud server, and reserved time is set, so that a driver has time to take corresponding measures.

The invention discloses a posture change detection device and method of an object clamped by a mechanical arm. The detection device comprises a mechanical arm clamping system. The mechanical arm clamping system comprises a mechanical arm and two mechanical fingers. The mechanical arm is a cross rod. The two mechanical fingers are vertical rods perpendicular to the cross rod and are mounted at the two ends of the cross rod correspondingly. The two mechanical fingers are used for clamping the object. A first sliding feeling sensor 1 and a second sliding feeling sensor 2 are embedded in one mechanical finger, and a third sliding feeling sensor 3 is embedded in the other mechanical finger. Each sliding feeling sensor is used for detecting the sliding displacement quantity and the sliding direction. Each sliding feeling sensor is connected with a storer through a corresponding A / D converter. The storer is connected with a DSP. The DSP is connected with a control computer through a USB interface. Therefore, quantitative detection of posture changes of the object is achieved. The detection method can be further used for continuous trace monitoring and tracking of the clamped object.

The invention provides a quick-change lock and an agent applying machine specially for cotton by means of the quick-change lock. The quick-change lock comprises a connecting base, a movable pin, an elastic part and a tube sleeve; the connecting base is fixedly connected with the tube sleeve, the elastic part is arranged in the tube sleeve, and the movable pin penetrates the tube sleeve in the axial direction and extends into the connecting base; the end, away from the connecting base, of the elastic part is fixedly connected with the tube sleeve, and the end, close to the connecting base, of the elastic part is fixedly connected with the movable pin; the movable pin can move in the axial direction in the tube sleeve, and a spraying device is fixedly connected to the lower portion of a spraying cantilever through the quick-change lock; a connecting column is arranged on a branch device, the cross section of the connecting column is in the same shape and size as a running hole in the connecting base, multiple through holes are formed in the upper end of the connecting column, and the diameters of the through holes are equal to the diameter of the movable pin. The quick-change lock and the agent applying machine specially for the cotton by means of the quick-change lock have the advantages that installation is easy, operation is convenient, a spraying mechanism can be quickly changed, adjusting operation is easy and fast, the agent applying area is broad, the cost is low and the efficiency is high.

The invention discloses a pedestrian shielding and orientation detection method. The method comprises the following steps: 1, ; s11, detecting the to-be-detected image by adopting the pedestrian detection model to obtain a pedestrian detection frame, cutting a pedestrian target from the to-be-detected image according to the pedestrian detection frame to obtain a single pedestrian target image, anddetecting pedestrian key points in the pedestrian target image to obtain confidence coefficients of the key points on the to-be-detected image; s12, according to the relationship between the key points and the parts in the human body structure, obtaining the occlusion prediction score of each part of the pedestrian in combination with the confidence of each obtained key point; s13, respectively comparing the occlusion prediction score of each part of the pedestrian with a preset part occlusion threshold value, and judging whether each part of the pedestrian is occluded or not; according to the method, the shielding state of each part of the pedestrian is judged without depending on the area of the visible part of the pedestrian, so that the accuracy of the shielding detection result is relatively high, and the shielded part can be accurately detected.

The invention discloses a frame based flat package part manufacturing process adopting the cutting channel optimization technology. The manufacturing process comprises the steps of wafer thinning, scribing, chip loading (chip bonding), pressure welding, plastic packaging, post curing, cutting channel etching, cutting, detecting, packaging and warehousing. The frame based flat package part manufacturing process can effectively avoid burring and layering of products in the procedure of cutting, thereby further improving the reliability of the products.

The invention relates to the technical field of mine drilling monitoring, and particularly relates to a method and device for monitoring drilling depth and the drilling speed of a mine down-the-hole drill. The method comprises the steps that an initial zero point of the corresponding stroke of an initial drill rod is determined, the down-the-hole drill is controlled to sink the initial drill rod,and the maximum drilling depth of the corresponding stroke of the initial drill rod is obtained; a connection zero point of the corresponding stroke of a connection drill rod is determined, the down-the-hole drill is controlled to be connected with the drill rod, the real-time drilling depth transmitted back by a distance measuring unit is received, and the drilling depth of the connection drill rod at the current moment is updated; and whether the sum of the drilling depths of the sunk drill rods is equal to the preset depth or not is judged. According to the method and device, the zero pointof each drill rod is reasonably set, the drilling depth of each drill rod is accurately monitored in combination with the real-time drilling depth transmitted back by the distance measuring unit, andtherefore the effective stroke and the effective stroke time generated in the ascending and descending process of the down-the-hole drill are accurately obtained, the total drilling depth accuratelyreaches the preset depth, and the reliability of monitoring the drilling depth of the mine down-the-hole drill is guaranteed.

The invention discloses a heating method of a weight detecting device. The method comprises the steps of S10, according to the operation instruction of a user, acquiring the heating modes of a weight detecting device selected by the user, wherein the heating modes are composed of a heating application mode, a heating preset mode and an automatic heating mode; S20, in one heating mode, heating the heating region of the weight detecting device. According to the technical scheme of the invention, according to the heating mode selected by the user, the heating region of the weight detecting device is heated, so that the temperature on the surface of a scale reaches the comfort temperature of a human body. Therefore, the body fat of the user can be continuously measured by the weight detecting device while the user is not affected by the external environment. As a result, the body health of the user is monitored. Moreover, the weight detecting device is provided with a plurality of heating modes, such as the heating application mode, the heating preset mode and the automatic heating mode. Therefore, the flexibility of the weight detecting device is improved.

The present invention relates to a screen sound emission structure for a terminal. The screen sound emission structure comprises a screen and a rear shell; the screen and the rear shell are in seal connection so as to form a sealed front cavity; a rear cavity for balancing part of the pressure of a gas in the front cavity is defined in the front cavity; a magnetic piston is arranged in the rear cavity; the magnetic piston can move in a reciprocating manner and can be used for compressing the gas in the front cavity, so that a screen can be deformed, and therefore, sound pressure can be generated, and sound is emitted; and a conductive coil that drives the magnetic piston to move through electromagnetic induction is wound around the magnetic piston. According to the screen sound emission structure for the terminal of the invention, the size of the front cavity is large, so that the screen sound emission structure has the advantages of good low frequency effect, large screen area, capability of pushing a large volume of external air and large generated sound pressure; and the screen and the rear shell are sealed to form the front cavity, and therefore, the screen sound emission structure has high three-prevention performance and is not affected by external environment.

A sound production device comprises a vibration shell and a vibration ring; the vibration ring is fixedly connected in the vibration shell, the vibration ring is fixedly connected with a driver, the driver is fixedly connected with a damping sleeve, the damping sleeve is fixedly connected with an inner supporting frame, the inner supporting frame is installed in the vibration shell, a connection adapter is installed on the inner supporting frame, and the adapter is connected with a signal connection line. The driver is electrically connected to a power amplifier board through an audio connecting wire. The vibration shell can be made of plastic, metal, bamboo, glass, leather, silica gel and paper materials. The vibration shell can be a spherical surface, a plane or a cambered surface. According to the invention, plane vibration sounding is not needed, plane processing of a sounding surface is not needed, a curved surface or fluid surface material can be directly connected for sounding,and waterproof and dustproof effects can be achieved. According to the invention, loudspeaker-free sound production is realized, dust and water can be prevented, influence of the external environmentis avoided, audio can be played at any time, and the loudspeaker-free sound production device is suitable for all environment places using wrapping materials to produce sound.