52results about How to "Less susceptible to outside interference" patented technology

The invention provides a right-angled reflection type three-dimensional laser scanner and a method for realizing three-dimensional imaging by using the same. Coordinates of spatial points are acquired by using laser distance measurement and laser beam control data. Because the laser range is far, high depth of field can be acquired, and a shot object with large depth range can be scanned. For the shot object which can be born by a rotary table, the multi-side scanning can be realized, the multi-side surface textures of the shot object are acquired by shooting repeatedly through a camera, and a three-dimensional image of the shot object can be acquired through post treatment of the textures. For the object which cannot be born by the rotary table, multiple sides of the shot object can be shot by a plurality of times. Under the premise of ensuring larger scanning range, the whole device does not produce mechanical motion during working, the laser beam can be controlled only by two compact shafts, and the laser beam is not easily interfered by the outside; the 360-degree three-dimensional imaging of the outer lateral surface of the shot object is realized by adopting an auxiliary mode; and the three-dimensional imaging of a single lateral surface is realized by adopting an independent mode.

The public is about an illumination control method, device and equipment, belonging to the technical field of control. The method includes detecting a distance and/or a user posture between the illumination device and a user, generating an illumination instruction according to the distance and/or user posture between the illumination device and the user, sending the illumination control instruction to an illumination device for controlling an illumination mode of the illumination device. The invention automatically controls illumination by detecting the distance and/or user posture between the illumination device and the user, so that the control mode is not easy to affect and artificial operation is not required, thereby simplifying the process of illumination control. The efficiency of illumination control is high.

The invention relates to a surface defect automatic detecting device for production process of a section bar rolling mill production line, which comprises a fixing device, a control device, video cameras, an image collecting computer, an information processing server, a light-emitting diode (LED) light source, a local area network, a process control network system, a spraying device, a pinch roll, a conveying roller way, stripper rubber and compressed air. The surface defect automatic detecting device for production process of the section bar rolling mill production line is characterized in that the number of the video cameras is determined according to the maximum number of the video cameras needed in the most complex surfaces of all varieties of the section bars to be detected. The surface defect automatic detecting device achieves automatic detection of surface defect of section bars (including varieties of heavy rails, H-shaped steel, joint steel, channel steel, steel angle and the like) by controlling and adjusting focal distance and angle of the video camera and the number of the video cameras. The surface defect automatic detecting device for production process of the section bar rolling mill production line is strong in adaptability, the same configuration can be applied to heavy rail processing lines and profile steel finishing lines, and accordingly software, hardware and spare parts of the device are universal, and manufacture and maintenance cost of equipment can be saved.

The invention relates to an infrared touch screen, in particular to an infrared multi-point touch screen which comprises a liquid crystal panel and a backlight module, wherein the backlight module is provided with an infrared light source and is also provided with an optical conducting assembly for conducting infrared rays sent by the infrared light source to the front of the liquid crystal panel; the backlight module is provided with photosensitive elements used for sensing the infrared rays, and the light-sensitive surfaces of the photosensitive elements face to the front of the liquid crystal panel. The infrared multi-point touch screen also comprises a signal processing system used for judging a touch position, the signal processing system is connected with the photosensitive elements, electric signals generated by the photosensitive elements are transmitted to a signal processing system, and the signal processing system obtains touch position information through analyzing the electric signals generated by the photosensitive elements. The signal processing system adopts a multi-point touch signal processing system capable of processing multi-point touch operations, and the multi-point touch signal processing system is connected with the photosensitive elements. The invention has the characteristics of low cost, suitability for large-area display, stable performance, better application in a multi-point touch technology, and the like.

The invention discloses a method for identifying and positioning an abnormal sound position of an aero-engine, which is used for accurately positioning the position where the aero-engine generates theabnormal sound. The method comprises the following steps: respectively mounting sensors at multiple positions of the aero-engine; acquiring an abnormal sound signal; performing format conversion on the acquired abnormal sound signal; and analyzing and processing the abnormal sound signal after conversion format so as to determine the accurate abnormal sound position. The method and a system for identifying and positioning the abnormal sound position of the aero-engine provided by the invention can avoid the situation that the aero-engine returns to the factory for repair due to wrong judgment, reduce unnecessary return loss, greatly reduce the maintenance cost of the aero-engine, and greatly improve the maintenance efficiency of the aero-engine.

The invention provides a water-in-water colorful coating and a preparation method thereof. The coating comprises a colloidal solution, a disperse phase and a continuous phase, the colloidal solution is formed by dissolving sodium pyrophosphate and magnesium lithium silicate in water, the disperse phase is mainly composed of a hydrophobic regulator, a wetting dispersant, cellulose, a pigment, the colloidal solution, an emulsion and water, and the continuous phase is mainly composed of the hydrophobic regulator, a film forming agent, an antifoaming agent, propylene glycol, a thickener, the emulsion and water, wherein the hydrophobic regulator is a divinyl benzene and 1-vinyl imidazole copolymer and/or a divinyl benzene and vinyl ionic liquid copolymer. The coating needs no organic solvents, and the waterproof property of the coating is increased through the hydrophobic regulator, so the colorful coating has the advantages of good waterproof property, bleeding resistance, stability, automatic cleaning and pollution prevention.

The invention relates to a down jacket fabric capable of inhibiting bacterium breeding and a preparation method thereof. The fabric comprises an outer layer, an inner layer and a bonding layer; the outer layer is formed by weaving outer layer fibers and antibacterial fibers ; the inner layer is formed by weaving inner layer fibers and antibacterial fibers ; and the bonding layer is formed by mixing antibacterial fibers and glue, and the bonding layer is used for bonding the outer layer and the inner layer to form a down filling partition. The antibacterial fiber is prepared from coconut carbon fiber, chitin, antibacterial powder, sodium alginate and essential oil in parts by weight. Chitin, antibacterial powder, sodium alginate and essential oil diluted by phenethyl alcohol are mixed and stirred to prepare an antibacterial solution with an antibacterial function and a deodorizing and aromatherapy function, and in the soaking and swelling process of the antibacterial solution, the chitin and the antibacterial powder can quickly enter cell walls of porous coconut carbon fibers, and therefore, the prepared antibacterial fiber has long-term better effects of bacteriostasis, odor removal, fragrance retention and the like in the textile fabric.

The invention discloses an infrared vision-based unmanned helicopter landing guiding and controlling method. By adopting an infrared identification mark as an identification mark of a ship deck, an unmanned helicopter takes a photo for a cooperative target by adopting a camera with an infrared optical filter. The method comprises the following steps: in processing, firstly filtering the shot image, and performing binarization processing by adopting a threshold method; then, performing contour extraction to obtain the contour of the infrared cooperative target; calculating the central coordinates according to the contour of the infrared cooperative target, and calculating the position error of the unmanned helicopter relative the cooperative target, and the posture of the deck; and finally,regulating the position of the unmanned helicopter by a position controller of the unmanned helicopter according to the position error, and regulating the posture of the unmanned helicopter accordingto the posture of the deck. According to the method, the control is simple, the real-time property is good, the precision is high, the stability is good, and the application prospect is wide.

The invention discloses a horizontal measuring tool. The horizontal measuring tool comprises a base, a transparent casing, a laser transmitter and a refraction liquid, wherein the transparent casing is fixedly arranged on the base and provided with a hollow space; scales are formed on the transparent casing; the laser transmitter is vertically positioned in the hollow space; the refraction liquidis encapsulated in the hollow space; in addition, when the refraction liquid is vertically placed, the laser transmitter is immersed into the refraction liquid; the refraction liquid is a transparentliquid. Whether the horizontal measuring tool disclosed by the invention is horizontal or not is judged by refraction of the refraction liquid to light of the laser transmitter; only when a measuringsurface is horizontal, the light can vertically penetrate through liquid surface, and otherwise the light refracts when penetrating through the liquid level; the light irradiates the scales of the transparent casing to beneficially read the result; in addition, a refractive index of the refraction liquid is fixed and not easily and externally disturbed. Moreover, an inclination angle of the surface where the base is located can be read.

The invention discloses a superconductive cavity tuning control system and method based on a PLC and a touch screen. The system comprises a PLC substrate. A PLC power module, a CPU module, a position control module, a first simulation input module, a second simulation input module, a simulation output module and a TTL input module are arranged on the PLC substrate. An incident power radio frequency signal lead out end of a superconductive cavity and a radio frequency signal lead out end coupled in the superconductive cavity are connected with two input ends of a phase discriminator. The output end of the phase discriminator is connected with the first simulation input module and the input end of the TTL input module. The second simulation input module and the output end of a displacement sensor are connected with a simulation voltage input end of a piezoelectric ceramic high-voltage power supply. The position control module is connected with a pulse input end of the stepper motor driver. The simulation output module is connected with a simulation input end of the piezoelectric ceramic high-voltage power supply. The CPU module is connected with the touch screen unit. According to the invention, frequency of the superconductive cavity can be automatically searched, captured and locked.

The invention discloses a servo motor positioning method and a servo positioning device. The servo motor positioning method comprises the following steps that a servo driver determines a current moving track of a servo motor according to a first motion control parameter sent by an upper computer; in each control period of the acceleration stage, a position control instruction pcmd is generated as pcmd = p 'cmd + delta pacc; in each control period of the constant speed stage, a position control instruction pcmd is generated, wherein pcmd is equal to pV max; in each control period of the deceleration stage, a position control instruction pcmd is generated as follows: pcmd = p 'cmd-delta pdec; when pcmd is smaller than or equal to delta pdec, a position control instruction pcmd is generated, wherein pcmd is equal to delta pdec; and driving the servo motor to work by adopting a correspondingly generated position control instruction according to the stage of the current moving track of the servo motor. An upper computer directly sends a first motion control parameter to a servo driver through a communication interface, and the servo driver generates a position control instruction and sends a voltage signal to a servo motor to drive the servo motor to work.

The invention relates to a switch power supply which comprises an input circuit, a switching circuit, an energy conversion circuit and an output circuit which are sequentially connected with one another; the switch power supply further comprises an output detection circuit connected with the output circuit, and a feedback circuit connected with the output detection circuit, wherein the switching circuit comprises a triode T2 and a metal oxide semiconductor (MOS) tube Q1; a collector of the triode T2 is connected with the input circuit; an emitting electrode of the triode T2 is connected with a drain electrode of the MOS tube Q1; a base electrode of the triode T2 is connected with a power supply; a source electrode of the MOS tube Q1 is in ground connection; and a grid electrode of the MOS tube Q1 is connected with the output of the feedback circuit. The switch power supply is capable of realizing a switching tube combination which is large in current, high in voltage and easy to drive by combining a large current dual-polarity transistor and the low-voltage MOS tube.

The invention discloses an automobile driving simulator. The automobile driving simulator comprises a base and a seat, a gear device, a hand brake, a steering wheel, a clutch pedal, a brake pedal and a throttle pedal which are arranged on the base, wherein the steering wheel and the three pedals are installed on a fixation support, the fixation support is disposed at the front side of the seat, and the fixation support is also provided with a high-speed industrial camera for performing image acquisition on dynamic conditions of transmission rods of the three pedals; the base at the right side of the fixation support is provided with a power supply management module, an industrial control computer and a display; each gear of the gear device is provided with a proximity switch; a tension sensor is installed between the hand brake and the base; the power supply management module provides working power supply to the high-speed industrial camera, the industrial control computer and the display; and the high-speed industrial camera, each proximity switch and the tension sensor are in communication connection with the industrial control computer, and the industrial control computer is in communication connection with the display. The structure is simple, the cost is low, errors are small, work dynamic conditions of the three pedals, the gear device and the hand brake are visually and clearly displayed, and the simulation effect is good.

The invention provides a non-contact rotary scanning device for the inner surface of a bore. An image of a to-be-detected artillery rifling is obtained through coordination of a mechanical structure of a detection device and a magnetic image sensor, the non-contact rotary scanning device comprises a driving device, a transmission device, a first clamping device, a second clamping device, a measuring device and a monitoring device, the driving device is connected with the transmission device through a lead screw, the measuring device is connected with the transmission device through the lead screw, the first clamping device is connected with the transmission device through a first auxiliary rotating disc, the second clamping device is connected with an outer machine frame sealing cover of the driving device through a second circular column, the monitoring device is connected with the driving device through a stepping motor, and monitoring of the rotating speed and the rotating angle in the rotating process is achieved. According to the device, an arm is rotated in a rotating mode, a power source only needs one motor, the structure of the whole device is simplified, centering and positioning in the bore of the device are achieved through the clamping device, the device conforms to the use of a small-caliber bore, and the measurement precision and efficiency of relevant parameters of the bore are improved.

The invention discloses a high-shielding signal line which comprises a first connection terminal and a second connection terminal. The first connection terminal is composed of a first inner conductor and a first outer conductor, the first inner conductor is connected in the first outer conductor in a sleeved mode, and the first inner conductor and the first outer conductor are fixed through a first insulation layer. The second connection terminal is composed of a second inner conductor and a second outer conductor, the second inner conductor is connected in the second outer conductor in a sleeved mode, and the second inner conductor and the second outer conductor are fixed through a second insulation layer. The first inner conductor is communicated with the second inner conductor through a first connecting line, and the first outer conductor is communicated with the second outer conductor through a second connecting line. The first connecting line and the second connecting line are contained in a first shielding layer, and the first insulation layer wraps the first shielding layer. The first connecting line and the second connecting line respectively comprise a conductor layer, a second shielding layer wrapping the conductor layer and a second insulation layer wrapping the second shielding layer. The high-shielding signal line has good shielding performance.

The invention aims at providing a timing valve. The timing valve is suitable for situations such as crop timing irrigation. The timing valve is used for reducing manpower and improving reliability can be improved. The timing valve comprises a valve body, wherein the valve body is provided with a magnetic valve core. The timing valve is characterized in that the magnetic valve core is connected with a control unit and the control unit is provided with a timing circuit. The timing valve can control closing and opening of the magnetic valve core through the timing circuit. The timing valve can open and close the valve in a timing mode and achieve functions of automatic irrigation and the like under the circumstance that the valve can be operated without the aid of manual operation. The timing valve is good in practicality.

The invention discloses a face recognition image fusion method, which comprises the following steps: S1, acquiring a plurality of to-be-recognized images as low-spatial-resolution images, and acquiring an image from a pre-stored image library as a high-resolution image; s2, performing PCA (Principal Component Analysis) transformation on the low-spatial-resolution image to obtain a principal component image group S3, performing gray stretching on the high-resolution image, and replacing the first component image in the main component image group with the high-resolution image after gray stretching to obtain a replacement image group; wherein the gray level uniform value of the high-resolution image after gray level stretching is the same as that of the principal component image group; and S4, performing PCA inverse transformation on the replacement image group to obtain a fused image. And the information amount during picture fusion is compared only by using the variance, so that external interference is not easily caused, and the accuracy is high. Principal components of the image data are in an orthogonal relationship, so that mutual interference among the original data can be counteracted; the method is simple in operation, is small in calculation amount, is low in time cost, and can achieve the quick image fusion for subsequent face recognition.

The invention relates to a wooden audio tea table with an action control function. The wooden audio tea table comprises a tea table panel, a tea table body and a tea table base; the upper end of the tea table body is detachably connected with the tea table panel, and the lower end of the tea table body is detachably connected with the tea table base; two or more grooves are formed in the lower part of the tea table panel, vibration sensors are inlaid in the grooves, and a distance sensor is arranged at the top of the tea table panel; audio equipment is mounted in a cavity in the middle of thetea table body; a control module is mounted in the cavity; and the control module receives information collected by the vibration sensors and the distance sensor and sends a control instruction to theaudio equipment. The wooden audio tea table is a tea table capable of conducting action control over audio playing and integrating the audio equipment and the tea table, and the accuracy and timeliness of action control, operability during action control over the audio equipment, practicability and attractiveness are achieved.

The embodiment of the invention discloses a visual information determination method and device, equipment and a storage medium. The method comprises the steps: obtaining an image frame sequence photographed by a camera, carrying out the feature point extraction of each image frame in the image frame sequence, and determining a feature point set in each image frame; carrying out collinear detection on all the feature points in each feature point set, and determining collinear sets of all the feature points composed of the feature points located on the same straight line, wherein each feature point collinear set comprises at least three feature points; determining a target camera pose at each shooting moment and a target three-dimensional world coordinate of each feature point according to the collinear set of each feature point, the camera internal reference information and the pixel coordinate of each feature point in the feature point set. Through the technical scheme of the embodiment of the invention, the precision and robustness of visual information determination can be improved.