126results about How to "Realize image acquisition" patented technology

The invention discloses a real-time acquisition experimental device for flowing foam structural images in porous media (rocks), which comprises a gas-liquid injecting system, a foam seepage simulation system, an image acquisition system and an output fluid separation metering system, wherein the gas-liquid injecting system is used for providing the fluid condition of a foam seepage simulation experiment; the foam seepage simulation system is used for simulating the environment of porous media of foam seepage and monitoring pressure data in the simulation process; the image acquisition system is used for acquiring foam microstructure images in the process of the foam seepage; and the output fluid separation metering system is used for separating and metering output fluid at a rock outlet automatically. Aiming at foam seeped in the real rocks in the high-pressure experimental state, the real-time dynamic observation and image acquisition of a foam microstructure are realized. The real-time acquisition experimental device has high practicability, performs quantitative description on a foam structure on the basis of the image acquisition, and provides an effective tool for developing microcosmic flowing study on foam in the porous media.

The invention provides an asphalt mixing plant aggregate gradation online detection and overflowing prevention control method and system. The system comprises a plurality of feeding bins, a pluralityof aggregate conveying belts, terminal equipment, a PLC controller, a frequency converter and a plurality of motors, wherein the quantities of the feeding bins, aggregate conveying belts and motors are the same; an aggregate conveying belt is arranged under each feeding bin; a camera obscura is fixedly arranged on a guide rail of each aggregate conveying belt; light equipment is arranged in the camera obscura; an image collector is arranged at the top of the camera obscura; the terminal equipment is connected with the image collector, so as to receive and process collected images; the terminalequipment is connected with the PLC controller, so as to send a velocity ratio required to be achieved by each aggregate conveying belt; the PLC controller is connected with the frequency converter;the frequency converter is connected with all the motors; each motor is connected with an aggregate conveying belt, so as to perform speed control. The system can ensure that aggregate gradation is qualified and matching requirements are met, and can effectively prevent the phenomenon of overflowing during asphalt mixing.

A worm wheel type driving pipeline robot system based on a high-strength spring wall press apparatus is characterized by comprising a body mechanical structure and a control system; the body mechanical structure comprises a spiral head, a body and a holding frame; the body is a main body of the robot; the working method is that the robot system is a fully-closed loop servo control system taking wheel linear speed as a feedback quantity through a fuzzy adaptive PID control algorithm. The advantages of the robot system are: (1) the robot system can steadily and flexibly move within a tilted and vertical pipeline with a minimal variable diameter; (2) the robot system exhibits good dynamic responsiveness, robustness and stability; (3) signal transmission is convenient; and (4) the robot system is highly controllable and is high in accuracy.

The invention discloses a digitalized oral cavity intelligent auxiliary diagnosis and treatment system, which comprises an oral cavity endoscope system connected with an image acquisition card, wherein the image acquisition card is connected with an image processor which comprises an oral cavity image data acquisition system, an image processing system and an oral cavity and tooth three-dimensional reconstruction system; the oral cavity endoscope system comprises a near-distance self-adaptive focus medical camera lens which is connected with an operating handle; a photoelectric converting and data processing system and an image scanning control circuit are arranged in the operating handle; and the near-distance self-adaptive focus medical camera lens is also connected with an illumination light-source system. The system utilizes a three-dimensional reconstruction technology for reconstructing a tooth three-dimensional model and simulates the process of correcting teeth to acquire technical parameters required by various phases for correcting the teeth.

The invention relates to a seed sorting device, which comprises a frame, a seed loading device, a sorting device and an image acquisition system. The seed loading device comprises a vibration plate and a seed loading conveyor belt mounted on the frame; both ends of the seed loading conveyor belt are respectively a seed loading terminal and a seed discharge terminal; and a lower end of a seed outlet of the vibration plate is the seed loading terminal of the seed loading conveyor belt. The sorting device comprises a sorting conveyor and a sorting chute, which are installed on the frame. The image acquisition system comprises a host computer, an upper camera and a lower camera; and the upper camera and the lower camera are installed on the frame. The seed sorting device provided by the invention utilizes a computer image processing technology to extract the shape character parameters including size, weight, shape and color of the seeds; the extracted parameters are compared with those preset by a user, so as to determine whether the seeds meet the requirements of seed breeding. The sorting device separates the seeds meeting breeding requirements from unqualified seeds, realizes the function of automatic precise seed screen, and is suitable for sorting and screening of a plurality of varieties.

The present invention relates to a cotton isomerism fiber detecting and measuring device, and a detecting and measuring method thereof. The device is characterized by comprising a cotton sample network preparing device, a cotton network collecting device, a detection box and a computer; the forefront of the cotton sample network preparing device is provided with a pair of cotton transmitting rollers and a pair of drawing rollers; one of the cotton transmitting rollers and the drawing rollers is provided with an encoder which is used for recording the transmission velocity and the position of the cotton network; the detection box is positioned between the two cotton transmitting rollers and the two drawing rollers; a detection channel is positioned in the detection box and is a transparent rectangular tube; one side or two sides of the detection channel are provided with a set of image acquisition systems; the computer is respectively connected with the signal acquisition card of the encoder and the image acquisition cards of the image acquisition systems; a set of isomerism fiber image identifying and measuring software is arranged in the computer; and the computer is connected with a displaying and printing device. The device and the method can be widely used in cotton quality inspection departments, cotton processing enterprise and cotton spinning enterprises.

The invention provides a power production safety monitoring system and a control method thereof. The power production safety monitoring system comprises a data collection and output layer, a data transmission layer, a data processing layer and a monitoring center layer. The data collection and output layer comprises an access control system, a personnel positioning system, a video monitoring system, an emergency broadcasting and communication system, an environment monitoring system, a disaster alarm control system and a hydraulic / geological monitoring system, which are connected with switches. The data processing layer comprises servers connected with the switches. The monitoring center layer comprises an access control and personnel positioning working station, a video monitoring workingstation, an emergency broadcasting and communication working station, an environment monitoring and alarm working station, a fall-proof monitoring working station, a hydraulic / geological monitoring working station and a system integration working station, which are connected with switches. The system integrates the information of sub-systems and performs determination and control according to integrated information, thereby making up loopholes and defects in hydropower station monitoring.

The invention discloses a ceramic tile automatic detection device. The ceramic tile automatic detection device comprises a face plate cover, large sliding blocks, middle sliding blocks, small sliding blocks, a large screw, a middle screw, a small screw, a large polish shaft, a middle polish shaft, a small polish shaft, an industrial CCD (Charge Coupled Device) camera and an annular light source; the number of the large sliding blocks is two; the large sliding blocks are flexibly connected with the face plate cover through the large polish screw and the large polish shaft; the number of the middle sliding blocks is four; the four middle sliding blocks are evenly divided into two groups which are flexibly connected to the two large sliding blocks through the middle screw and the middle polish shaft; the small sliding blocks which are corresponding to the middle sliding blocks in a one to one mode are flexibly connected with the middle sliding blocks through the small screw and the small polish shaft; the industrial CCD camera and the annular light source are fixed on the small sliding blocks. During the actual working process, the distance between cameras on the left side and the right side of a horizontal plane is controlled through the large sliding blocks, the distance between cameras on the front side and the rear side of the horizontal plane is controlled by the middle sliding blocks, the distance from top to bottom of the industrial CCD camera in the vertical direction is controlled through the small sliding blocks to be adapted to correct focusing under the actual working environment, and accordingly automatic detection of ceramic tile size and angle and surface defects is achieved.

The invention discloses a middle-low-speed magnetic suspension rescue robot. The middle-low-speed magnetic suspension rescue robot comprises a rack, folding bending mechanisms, a detecting rescue mechanism and an autonomous cruise module; the rack stretches over two middle-low-speed magnetic suspension F rails to be detected; the two folding bending mechanisms are arranged at the two ends of the rack and are located above the F rails, and each folding bending mechanism is provided with a walking wheel pair and a clamping wheel pair; the detecting rescue mechanism comprises a distance measuring sensor, a camera and a rescue contact rod, the distance measuring sensor is arranged on the rack and located between the two F rails, the camera is arranged above the rack, and the rescue contact rod is horizontally mounted on the side face of the rack; the autonomous cruise module is mounted below the rack and used for achieving free walking of the rescue robot along the F rails. In-time rescue of the F-rail abnormal detection robot is achieved, and the beneficial effects of being simple in structure, convenient to operate and the like are achieved.

The invention discloses a self-moving granary detecting device and a detecting method thereof, belongs to the field of granary grain mildew detecting equipment, and particularly relates to a detecting device which can move freely in a granary. The self-moving granary detecting device is characterized in that a detector and a guiding device are included, the detector is provided with an outer shell (3), the bottom of the outer shell (3) is connected with a transparent cover (1), the top of the outer shell (3) is connected with the guiding device, a circuit board (10) is fixedly arranged in the middle inside the detector, an image capture device and an internal environment detection device are mounted on one side, facing the transparent cover (1), of the circuit board (10), and a wireless transmitting device is mounted in the middle of the circuit board (10); one side of the outer portion of the guiding device is connected with a recovery device, and the recovery device is used for driving the detector to achieve self moving. By means of the self-moving granary detecting device and the detecting method thereof, image capture at any position inside the granary can be achieved, the device can move freely in grain heaps, and thus the grain mildew condition can be detected rapidly and accurately.

The invention discloses a low and medium speed magnetic levitation icebreaking and snow melting cleaning robot which comprises a machine frame, two folding bending mechanisms, an ice melting cleaning mechanism and an autonomous cruising module. The machine frame stretches over two rails F of low and medium speed magnetic levitation to be detected. The two folding bending mechanisms are arranged at the two ends of the machine frame and located above the rails F. Each folding and bending mechanism is provided with a walking wheel pair and a clamping wheel pair. The snow melting cleaning mechanism comprises a fixed frame, a rail F obstacle removal cleaning unit and an ice melting heating unit. The fixing frame is installed on the machine frame and located above the folding bending mechanisms and arranged in the extending direction of the rails F. The rail F obstacle removal cleaning unit and the ice melting heating unit are arranged at the two ends of the fixing frame. The autonomous cruising module is installed below the machine frame. Rail F ice and snow melting and cleaning can be achieved, and the low and medium speed magnetic levitation icebreaking and snow melting cleaning robot has the advantages of being simple in structure, convenient to operate and the like.

The invention discloses an electric energy meter liquid crystal device fault detection method. The method comprises the steps that working images of a liquid crystal device are collected through an image collecting device when an electric energy meter is energized; the liquid crystal working images are transmitted into an image processor; characteristic signals of a binary image and the liquid crystal working images are obtained; finally, the characteristic signals are compared with electric energy meter liquid crystal device working standard characteristic signals stored in a database system to obtain a difference value, and whether a fault exists in the liquid crystal device or not is obtained; according to the method, whether defects exist in electric energy meter liquid crystals or not can be identified automatically; in this way, manual work of detecting each electric energy meter liquid crystal can be reduced, and the work efficiency is improved. An epitope voltage relay is controlled through communication of upper computer software and an error instrument, and energizing and deenergizing of the electric energy meter is controlled. In the energizing moment of the electric energy meter, liquid crystals can be subjected to point measurement, at this time, shooting is conducted through a camera, comparison is conducted with samples in a standard library by means of the image processing technology, and whether the electric energy meter liquid crystals break down or not is judged.

The embodiment of the invention discloses an acquisition module and electronic equipment. The acquisition module comprises an acquisition unit, a transmission rod, a driving rod, a driving unit and a limiting structure; the acquisition unit is used for acquiring an image; the transmission rod is fixedly connected with the acquisition unit; the outside surface of the transmission rod outwardly extends, so that a limiting bump is formed; the driving rod is in threaded connection with the inside surface of the transmission rod; the driving unit is fixedly connected with the driving rod; the limiting structure is used for limiting the movement range of the transmission rod; when the acquisition module is in a first state, the limiting structure and the limiting bump are interacted, so that rotation of the transmission rod is limited; the driving rod rotates under the action of the driving force provided by the driving unit, so that the transmission rod is prompt to perform linear movement; when the acquisition module is in a second state, the limiting structure and the limiting bump are separated; and, under the action of the driving force, the driving rod drives the transmission rod to rotate through rotation itself.

The invention relates to the machine vision detection and measurement field and provides a line scanning camera imaging method for an object with variable thickness. A camera (2) and a light source (1) form an imaging light path of a detection system in a set angle, a plane mirror set is arranged on a reflection light path of light rays of an imaged object, light rays are emitted from a light source and then enter the camera to be imaged through the plane mirror set after being reflected by an imaging surface (3); the plane mirror set comprises a first plane mirror (4) and a second plane mirror (5), the reflection surfaces of the first plane mirror and the second plane mirror are opposite and parallel, the first plane mirror and the second plane mirror rotate around rotating shafts passing through the center points of the width in a length direction respectively, and a distance between two plane mirrors can be adjusted; when the surface height of the imaged object is changed, the distance and the angle between two plane mirrors are adjusted to maintain the positions of the original imaging light source and the camera to be unchanged, and imaging can be realized effectively; and the method can be applied to the surface detection system for steel and iron plate blanks, copper tapes and the like, which have great vibration in thickness.

The invention discloses a cotton foreign fiber automatic removing method and a system based on image acquisition and DSP algorithm. The method includes (1) conveying and loosening lint cotton; (2) acquiring a lint cotton image frame by frame, and storing into a corresponding memory unit of DSP (digital signal processing); performing comparison, filtering, image enhancement and binarization treatment on the image data in the memory unit read by the DSP, placing the lint cotton image in a coordinate system having coordinate grid lines, extracting foreign fiber information separated by Otsu algorithm, comparing the foreign fiber image with the grid lines in the coordinate system, and calculating foreign fiber coordinates for precise positioning; and (4) automatically blowing away foreign fiber. The method has improved cotton foreign fiber removal precision and efficiency.

The invention provides a camera module and a mobile terminal. The camera module comprises: a bearing piece; an image sensor which is fixedly arranged on the bearing piece; a first lens and a second lens which are movably arranged on the bearing piece, wherein the first lens and the second lens can be respectively aligned with the image sensor through movement so as to be respectively matched withthe image sensor to realize image acquisition; and an electromagnetic induction module which is arranged on the bearing piece and drives the first lens and the second lens to move, so that the first lens and the second lens are respectively aligned with the image sensor. According to the camera module, the image acquired by each lens can have a relatively high imaging effect, so that the overall imaging effect of the camera module is improved, and the use experience of a user can be improved.

A high-integration level iris recognition device disclosed by the present invention comprises an iris image acquisition module, an iris image algorithm processing module, a man-machine interaction module and a matching client module, wherein the iris image acquisition module acquires an iris image, the iris image algorithm processing module pre-processes the image, extracts and codes the image characteristics and carries out the image classification matching identification after the iris image is acquired, the man-machine interaction module sets the information, and the matching client module transmits and remotely controls the encrypted iris information. The high-integration level iris recognition device of the present invention fuses a linux operation system and an image acquisition and iris recognition algorithm, is realized by an SOC chip, has the remarkable effects of saving the hardware cost, reducing the power consumption, the module size and the fault rate, etc., at the same time, can be upgraded flexibly, and supports the higher resolution and interface type.

The invention relates to a radiation-resistant and radiation-protective combined periscope type light path structure. The radiation-resistant and radiation-protective combined periscope type light path structure is characterized in that an 'L'-shaped light path channel of a protection frame for fixing a light path structure is formed by a vertical channel and a horizontal channel, the horizontal channel is arranged at the bottom of the vertical channel in a communicated manner, an opening which is formed in the left side of the upper portion of the vertical channel is used as a light path channel inlet, and an opening which is formed in the right side of the lower portion of the vertical channel is used as a horizontal channel light path inlet; a radiation-protective layer which is made of lead by means of casting is arranged on the outer surface of the protective frame; emergent light C which is parallel to incident light is formed in the 'L'-shaped light path channel by a first plane reflecting mirror and a second plane reflecting mirror; an optical axis of a radiation-resistant imaging lens 5 coincides with the emergent light C, and signals can be transmitted between the radiation-resistant imaging lens and a CCD (charge coupled device) camera by the aid of radiation-resistant optical fiber image bundles. The radiation-resistant and radiation-protective combined periscope type light path structure has the advantage that imaging elements and imaging equipment can keep working stably for a long time in intense-radiation environments.

The invention discloses a magnetic ring surface defect detection device, which is characterized by comprising a conveying belt, wherein the conveying belt is used for conveying magnetic rings to be detected; a detection position and a rejection product removal position are arranged in a way of corresponding to the conveying belt; a sensor, a light source and a camera are arranged in a way of corresponding to the detection position; a mechanical hand is arranged in a way of corresponding to the rejection product removal position; a conveying belt driving mechanism, the sensor, the light source,the camera and the mechanical hand are connected with one industrial computer; the industrial computer controls the starting and the stopping of the conveying belt according to signals fed back by the sensor, and judges whether the magnetic rings are qualified products or defect products according to self machine vision software; if the magnetic rings are defect products, the mechanical hand in the next station is driven to act; the defect products are removed; if the products are qualified products, the magnetic rings realize the automatic material turning on the conveying belt; then, the magnetic rings enter the detection region for detecting the other end surface; the detection treatment is performed. The invention also discloses a magnetic ring surface defect detection method.

The invention discloses a medium-low speed magnetic suspension auxiliary working robot, which comprises a frame, two sets of folding and bending mechanisms, an auxiliary working mechanism and an autonomous cruising module. The frame spans between two F rails of medium-low speed magnetic suspension to be detected. The two sets of folding and bending mechanisms are respectively arranged at two endsof the frame and above the F rail, and each group of the folding and bending mechanism is provided with a traveling wheel pair and a clamping wheel pair. The auxiliary work mechanism comprises an auxiliary work platform and an auxiliary work equipment, wherein the auxiliary work platform is installed on the machine frame and the auxiliary work equipment is installed on the auxiliary work platformfor completing the auxiliary work. The autonomous cruise module is installed under the rack, which is used to realize the free walking of the auxiliary robot along the F-track. The invention can realize auxiliary operation of field maintenance and can realize autonomous cruising, and has the advantages of simple structure, convenient operation and the like.

The invention discloses a sweeping assembly. The sweeping assembly comprises a sweeping strip, wherein two ends of the sweeping strip are respectively provided with driving parts, the middle part of the sweeping strip is a sweeping part, and the sweeping part is provided with a brush cleaner; the sweeping part is connected with the driving part through a connecting part, the driving part is assembled with a threaded rod through thread rotation, one end of the threaded rod runs through a first fixing plate and is fixedly assembled with a second gear, the other end of the threaded rod is rotationally assembled with an articulated part, and the articulated part is hinged with two sides of a lifting groove through an articulated shaft; the second gear is in meshed transmission with a first gear, and the first gear is fixed on an output shaft; a motor is fixedly assembled with a third fixing plate and a second fixing plate, and the third fixing plate is fixedly connected with the second fixing plate through the first fixing plate; the second fixing plate is fixedly connected with one end of a stay cord, and the other end of the stay cord winds a deploying and retracting shaft; the thirdfixing plate is fixedly connected with one end of an elastic rope, and the other end of the elastic rope is fixed with a limiting table. The invention further discloses a bee mite killing box using the above sweeping assembly.

The invention discloses a detection device for a tooth shape size of a cross-shaped key. According to the detection device, a backlight source is placed on a U-shaped objective table; a fixed plate is vertically and fixedly arranged on the side face of the objective table; a 90-degree rotary air cylinder is mounted in the center of the fixed plate; a handle of the cross-shaped key is fixedly arranged on a clamp; an air pump is connected with the 90-degree rotary air cylinder by a solenoid valve; a CCD (Charge Coupled Device) camera is located above a tooth-shaped part of the cross-shaped key to be detected; the camera is connected with a computer host by an image acquisition card; a display is connected with the computer host; a PLC (Programmable Logic Controller) is connected with the computer host. According to the detection device disclosed by the invention, the backlight source is used for clearly showing a tooth-shaped outline of the key in the view field of the camera; image interferences are removed by image processing; the boundary of the tooth-shaped image is positioned and the distance between opposite sides of a tooth shape is calculated. A 90-degree rotary mechanism is used for realizing the all-directional image acquisition on the tooth shape of the key and whether a product is qualified or not is judged according to the distance between image sampling points and a pre-set threshold value, and furthermore, the problem of a traditional detection manner that online detection can not be carried out in real time is solved.

The invention provides a vertical type all-in-one machine with a front-mounted camera and a control method thereof. The vertical type all-in-one machine with the front-mounted camera comprises a shell body, a host box and a display screen, wherein a host is arranged at the bottom of the shell body; the display screen is mounted on a front surface of the shell body; the display screen is a touch screen; a camera is arranged on the front surface of the shell body; the host is arranged in the host box and the host is connected with the camera and the display screen respectively. According to the vertical type all-in-one machine, the camera is mounted on a top wall and can be used for collecting a real-time scene at a front part of the machine and man-machine interaction can be realized, so that requirements on specific scenes including advertising display, marketing promotion, interactive entertainment and the like are met, and the effect of enhancing reality is realized; virtuality and reality are combined to bring brand-new visual experience to a user; the user can also carry out image acquisition on secondhand books through the camera, and transmit acquired images to the host, so that a function of recycling the secondhand books is realized; furthermore, the vertical type all-in-one machine also has image acquisition and information processing functions.

The invention discloses a medium and low speed maglev auxiliary operation robot. The auxiliary operation robot comprises a rack, folding and bending mechanisms, an auxiliary operation mechanism and an autonomous cruise module. The rack stretches across two F rails of a medium and low speed maglev; the two folding and bending mechanisms are arranged at the two ends of the rack respectively and located on the F rails, and each folding and bending mechanism is provided with a walking wheel pair and a detent wheel pair; the auxiliary operation mechanism comprises an auxiliary operation platform and auxiliary operation equipment, wherein the auxiliary operation platform is installed on the rack, the auxiliary operation equipment is installed on the auxiliary operation platform and used for completing auxiliary operation; the autonomous cruise module is installed below the rack and used for making the auxiliary operation robot walk along the F rails freely. Auxiliary operation of on-site maintenance and autonomous cruise can be achieved, and the medium and low speed maglev auxiliary operation robot has the advantages of being simple in structure, convenient to operate and the like.

The invention discloses a corn kernel quality vision detector. The detector comprises a detection platform, which comprises a workbench for placement of corn kernels and a transmission mechanism. The workbench comprises a jitter source, a scraper plate, a shading box, a photoelectric sensor, a lighting source and a CCD camera. The transmission mechanism comprises a driving motor and a synchronous belt. A spindle of the driving motor is connected to a driving pulley in the synchronous belt. The spindle of the driving motor drives the synchronous belt to move. The synchronous belt drives corn kernels to be detected on a delivery sheet to move in the rectilinear direction. Thus, the CCD camera can realize image acquisition. By the vision-based detector, vision detection and analysis of corn kernel quality are carried out to realize quality detection of corn kernels of different types and picking of impurities. Therefore, high-speed automatic detection of high-quality corn kernels is guaranteed.

The invention relates to a machine vision-based fire-resistant material image acquisition device. According to the technical schemes of the invention, the image acquisition device is composed of a mounting frame (1), a horizontal movement system (2), a vertical movement system (3), an image acquisition system (4), a light source (5), a fire-resistant material fixing device (6) and a fire-resistantmaterial rack (7); the horizontal movement system (2) is horizontally fixed at the upper part of the mounting frame (1) along the length of the mounting frame (1); the longitudinal base (20) of the vertical movement system (3) is fixedly connected to the upper plane of a horizontal working table (12); the image acquisition system (4) is fixedly connected to the vertical movement system (3); the light source (5) is mounted on a light source holder (9); and the fire-resistant material fixing device (6) is placed on the longitudinal horizontal guide rail (34) of the fire-resistant material rack(7) through a triangular connection frame (30). The machine vision-based fire-resistant material image acquisition device of the invention has the advantages of compact structure, high adaptability and simple operation, and can realize precise motion control; and pictures collected by the device are clear, so that a reliable basis can be provided for later image processing.

The invention discloses a wood surface defect detection method and a wood surface defect detection system based on machine vision, which can enhance the texture of a wood image, perform noise removalpreprocessing on the image by using median filtering, construct a neural network recognition model and an improved BP neural network algorithm, and provide a two-stage neural network board surface defect detection model structure. Errors are effectively reduced, the detection precision is ensured, and the product quality is improved; by arranging a servo motor and a lead screw, manual operation can be completely replaced in the wood board surface defect detection process, and the automation degree is high. In the process that the camera collects images of the surface of a wood board, accordingto the type and specification of the wood board to be detected, an upper computer sends the type and specification of the wood board to a PLC, the servo motor drives the lead screw to conduct transmission, the camera is moved to the corresponding position, positioning is accurate, image collection of wood boards of different types and specifications is achieved, and the detection efficiency of the board is improved.

The invention discloses a finger and palm print imaging system which comprises a liquid cavity outer wall, a liquid cavity, a liquid cavity inner wall, a cavity, a reflector set, a light source and an imaging mechanism which are sequentially arranged. The liquid cavity is filled with transparent liquid, the reflector set is arranged in the liquid cavity, the light source is arranged in the cavity or the liquid cavity, and the imaging mechanism is arranged in the cavity. The outer surface of the liquid cavity outer wall is an acquisition surface and used for making contact with the palm with finger and palm prints to be acquired, and the liquid cavity outer wall and the liquid cavity inner wall are both made of the transparent material. Fixed angles are formed among the light source, the reflector set and the imaging mechanism, the relative positions of the light source, the reflector set and the imaging mechanism are unchanged, the light source, the reflector set and the imaging mechanism can synchronously move, and the imaging mechanism can synchronously acquire reflected light. A light path in the imaging system is characterized in that light emitted by the light source generates the reflected light on the acquisition surface making contact with the palm with the finger and palm prints to be acquired, the reflected light is reflected by the reflector set to enter the cavity, and then the finger and palm prints are acquired through the imaging mechanism. The finger and palm print imaging system has the advantages of being more compact in structure, small in size, low in weight and low in production cost.

The invention discloses a monocular-principle-based six-degree-of-freedom position and attitude measuring device for measuring the static balance of a gyroscope. The measuring device comprises an X-axis image acquisition component (10) for acquiring image information of a test sample (40) in the X-axis direction, a Y-axis image acquisition component (20) for acquiring image information of the test sample (40) in the Y-axis direction, a Z-axis image acquisition component (30) for acquiring image information of the test sample (40) in the Z-axis direction, a support frame (1) and a background plate, wherein the X-axis image acquisition component (10), the Y-axis image acquisition component (20) and the Z-axis image acquisition component (30) are arranged outside the support frame (1); and the background plate is arranged in the support frame (1). The measuring device acquires a front view, a side view and a vertical view of the test sample (40) through three cameras, and is not required to be directly contacted with the test sample, so the attitude change of the test sample cannot be interfered, and the device is extremely favorable for improving measuring accuracy.