424results about How to "Simple installation and debugging" patented technology

The invention provides a method and a system for measuring speed of moving targets, which aims to solve slow response and other problems of the prior speed measurement method. The method comprises the steps of utilizing the basic principles of projective geometry, determining pixel coordinates in images and the coordinate mapping relation of pixels in real space through a camera calibration technique, utilizing the mapping relation to detect sequence frame images acquired by cameras, calculating the coordinates of the moving targets in the images in the real space, obtaining the motion curves of the moving targets in the real space through target tracking and then estimating the speed of the moving targets. The speed measurement method based on camera calibration has the advantages of fast response, large amount of detected information and capability of estimating the speed of all vehicles within a monitoring range in real time. Moreover, as the speed measurement of vehicles can be realized by utilizing the cameras, the method is easy to implement, lower in cost and easy to popularize and apply.

The invention relates to a laser radar coaxial transmitting and receiving system and a coaxial adjustment method thereof and belongs to the technical field of laser radar, and the method can be used for solving the problem that the coaxial adjustment period of a laser radar receiving and transmission light path is long. The laser radar coaxial transmission and receiving system is composed of a laser device, a transmission telescope, a first reflecting mirror, a second reflecting mirror, a receiving telescope, a concave lens, a convex lens, a beam splitter, an optical fiber, a CCD (Charge Coupled Device) camera, a computer and a motor rotation control system. The coaxial adjustment method based on the system comprises the following steps: adjusting the visual field definition of the receiving telescope; when the receiving telescope receives background light, obtaining a standard centroid position acquired by the CCD camera; starting the laser device, calculating the real-time centroid position of an image acquired by the CCD camera in real time, and calculating the deviation between the two centroid positions; and controlling the pitching and bearing of the first reflecting mirror until the deviation reaches an error tolerance, thus realizing the coaxial adjustment. The method provided by the invention is applicable to the coaxial adjustment of a laser radar receiving and transmission system.

The invention discloses a high-speed parallel-connection robot pickup device with vision, and the high-speed parallel-connection robot pickup device mainly comprises a robot body structure, an installation frame, a vision system and a conveying system. The robot body structure comprises a fixed platform, three groups of mechanical arms, a rotating shaft and a movable platform. The vision system mainly comprises a charge coupled device (CCD) camera, an image collection card and an industrial control computer, wherein the CCD camera is fixed on the installation frame. The conveying system is fixed on the installation frame and comprises a motor, a reduction mechanism, a roller and a conveyor belt. The high-speed parallel-connection robot pickup device is high in speed and precision, good in rigidness and applicable to the high-speed sorting or pickup of articles in the industries such as food, medicine, electron and the like.

The invention relates to the field of optical fiber sensing and optical fiber gas trace amount detecting. In order to solve the defects that a one-way gas chamber has short absorbing distance and low probing sensitivity caused by the limit of the length of a gas pool and a long-range gas chamber has poor stability and the like because of a complicated optical structure in the gas chamber in the traditional absorption-type optical fiber gas detecting technology, the invention adopts the technical scheme that: a hollow photon crystal optical fiber-based optical fiber-connected low-pressure gas chamber device comprises two parts, i.e. a sealing gas chamber and an optical fiber connected optical path; a sealing metal gas chamber comprises two parts, i.e. a main gas chamber and a sealing cover, wherein the main gas chamber is formed by drawing a cylinder-shaped hollow core cavity from a straight metal column; the optical fiber connected optical path is made from single-mode optical fiber, photon crystal optical fiber and multi-mode optical fiber; and the hollow photon crystal optical fiber-based optical fiber-connected low-pressure gas chamber device further comprises a vacuum pump which is used for vacuumizing the main gas chamber. The hollow photon crystal optical fiber-based optical fiber-connected low-pressure gas chamber device is mainly applied to detection of the optical fiber gas trace amount.

The embodiment of the invention relates to the technical field of robot control, and discloses a method and a module for distinguishing a load of a six-axis robot. The method for distinguishing the load of the six-axis robot comprises the following steps: according to a preset parameter limiting value of each joint, generating an excitation track of the six-axis robot; when the six-axis robot carrying the load is controlled to run along the excitation track, collecting a parameter running value of each joint; according to the parameter running value of each joint and a preset robot dynamics model, calculating a torque predicting value of each joint; calculating a difference between the torque running value and the torque predicting value, the difference serving as torque produced by the load, and according to preset relationship of the torque produced by the load and a load inertia parameter, calculating the load inertia parameter. The embodiment of the invention also provides the module for distinguishing the load of the six-axis robot. The module for distinguishing the load of the six-axis robot disclosed by the embodiment has the advantage that compared with the prior art, the parameter running value of the robot is collected on line, and the load inertia parameter of the robot is distinguished; because a six-dimensional force sensor is not used, the cost is reduced.

The invention provides an LED street lamp system having environment and road condition monitoring functions and relates to the technical field of LED street lamps for urban lighting. The LED street lamp system comprises a front-end street lamp system and a central server, wherein the front-end street lamp system can complete efficient and energy-saving urban lighting, intelligent switch control, real-time environment monitoring and data transmission as well as real-time road condition monitoring and alarming information publishing; the central server completes information collection and summarization, control instruction pushing and information resource shared access of the front-end street lamp system. The LED street lamp system integrates urban road lighting, real-time road condition monitoring and alarming and real-time environment monitoring functions, and the input cost during urban infrastructure construction is greatly saved on the premise that related functions of city supervision are guaranteed.

The invention provides a vehicle intelligent speed measuring method based on a binocular stereoscopic vision system. The method comprises the following steps: training an SSD neural network by takinga license plate as a detection feature to obtain a license plate identification model; calibrating the binocular stereoscopic vision system to obtain the own parameters and external parameters of twocameras; performing license plate detection on an acquired video frame by using the license plate identification model, and locating the license plate position of a target vehicle; performing featurepoint extraction and stereoscopic matching on the license plate position based on a feature matching algorithm; screening and removing retained matching points, and keeping the coordinate of the matching point closest to the center of the license plate; performing stereoscopic measurement on the screened matching points to obtain a position under space coordinates; and calculating the travel distance of the target vehicle within a certain time interval to obtain the running speed of the target vehicle. Through adoption of the method, mounting and debugging are facilitated; a plurality of trained features can be automatically identified at the same time; and the development demand of a future intelligent traffic network and Internet of things can be met better.

The invention discloses a continuous casting billet laser sizing system. The continuous casting billet laser sizing system comprises a PLC unit, a laser detection unit, a display unit and a calculation unit, wherein the PLC unit controls a roller bed of a continuous casting machine and a flame cutting machine; the laser detection unit is connected with the PLC unit and is used for detecting relative positions of continuous casting billets; the display unit is connected with the PLC unit and is used for monitoring operating conditions of the whole system and allowing workers to input necessary data during debugging; the calculation unit is connected with the PLC unit and is used for converting the relative positions, detected by the laser detection unit, of end surfaces of the continuous casting billets into actual lengths of the continuous casting billets. The continuous casting billet laser sizing system has the advantages of being high in sizing precision, stable and simple in calibration, easy to install, debug, operate and maintain, low in operation cost and accurate in cutting, improves sizing rate and yield and reduces rejection rate.

The invention relates to an automatic snapshot system of illegal parking at yellow grid lines. The system comprises a front-end unit part, a network transmission part, and a central management part. The front-end unit part employs a pure video analysis method to determine an illegal behavior and identify, track and record the vehicle; the vehicle information and video information that are recorded by the front-end unit part are transmitted to the central management part by the network transmission part; and the central management part manages and processes the transmitted information. According to the invention, the front-end structure is simplified substantially; the integration degree of the whole system is improved; the equipment operation becomes stable; the installation and debugging become simple, and maintenance become convenient.

The invention relates to a method and a device for positioning ground fire by a monocular camera. The method comprises the following steps of: arranging the monocular camera above a ground area to be monitored, driving the monocular camera to move and scan the ground area to be monitored to obtain a monitoring image, when a flame object appears in the monitoring image, appointing a point within the monitoring image by taking the center of the bottom edge of the image formed by a flame object as a reference point, and driving the monocular camera to move, so as to enable the reference point to be coincided with the appointed point to put out a fire by spraying water. Correspondingly, the device comprises a movement mechanism which is arranged above the center of the ground area to be monitored and can rotate along the horizontal surface and the vertical surface, a monocular camera which is arranged on the movement mechanism, and a controller which is connected with the monocular camera and the movement mechanism respectively. According to the method and the device, the positioning precision is high, the positioning speed is quick, the positioning method is simple, technical requirement is low, and installation and debugging are easy.

The gas analysis system includes light-emitting device, light-receiving device, signal analysis device, mechanical connection structure and measuring pipe. The light-emitting device and light-receiving device are mounted on the tested gas pipeline by means of mechanical connection structure. Said system also includes an additional pipe, a control device and a gas replacement device. Said additional pipe and measuring pipe are formed into a basically-closed pipeline which is isolated from tested gas. Said invention also provides the concrete structure of the gas replacement device.

The invention relates to an electric actuator with a photoelectric positioning mechanism. The electric actuator with the photoelectric positioning mechanism is mainly and technically characterized by comprising a control circuit board, a positioning mechanism, an output shaft, a transmission mechanism and a motor, wherein the motor is connected with the transmission mechanism and drives the output shaft to rotate through the transmission mechanism; the positioning mechanism comprises a photoelectric switch and a positioning plate; the positioning plate is fixedly installed on the output shaft and rotates along with the output shaft; a positioning plate nick is formed on the periphery of the positioning plate; the photoelectric switch is installed on the control circuit board and is positioned in a position where the positioning plate nick rotates to pass by; and when the positioning plate rotates, the photoelectric switch is cut to generate a positioning signal and the positioning signal is output onto the control circuit board. The electric actuator with the photoelectric positioning mechanism is reasonable in design, solves the defect that in the traditional positioning ways such as reed positioning, microswitch positioning and the like, the mechanical life is limited, improves the reliability of a product, meets the need that a variety of control ways are realized on a circuit board and reduces the production cost and the management cost.

The invention relates to a contact-type three-dimensional scanning measuring head measuring device and belongs to the field of precision measurement. The measuring device is suitable for micrometric displacement measuring and three-dimensional microsize measuring. The measuring device comprises a mechanical measuring head part and a grating signal processing part. An elastic parallelogram structure composed of a parallel spring piece structure and four double-hinge rods in the y direction, the x direction and the z direction is arranged in the mechanical measuring head part. When the scanning measuring head measuring device is used, measuring force and displacement in any direction are decomposed to measuring force and displacement in plane horizontal motion and motion perpendicular to the plane direction, compared with displacement which is directly decomposed in three directions, the mechanical structure of a measuring head is greatly simplified, a three-dimensional Abbe arm of the measuring head is reduced, an error transmission chain is shortened, in addition, motion weight and measuring force in the three directions are equal, deflecting force is even, dynamic property is identical, part machining is easy, cost is low, and mounting and debugging are easy.

The invention provides a system and a method for superimposing multiple projectors on the basis of stereoscopic display. Brightness is strengthened by a multi-projector superimposing mode, and pictures projected by each projector to a spherical screen are processed in advance, so that the pictures projected by the multiple projectors to the spherical screen are perfectly coincided, and purposes of strengthening the display brightness of the large spherical display and lowering cost are achieved. In addition, the system is simple in installation and debugging, and requirements on manufacture of displayed materials are low. The system comprises the spherical screen, a computer and two or more projectors; each projector is provided with a fish-eye lens; an opening is arranged at the lower end of the spherical screen; the fish-eye lenses are arranged in the center of the opening, and light emitted by the projectors are respectively projected to the spherical screen via the fish-eye lenses; and the computer is connected with each projector and used for controlling the pictures projected from the projector to the spherical screen, so that images projected from the projectors to the spherical screen are completely coincided.

The invention provides a method for detecting touchdown of lifting legs of a mobile platform. Hardware equipment comprises a dual-axis tilt angle sensor and a mobile platform leveling control system arranged on the mobile platform. The method comprises the following steps that: a, the mobile platform leveling control system controls a certain lifting leg of the mobile platform to stretch out until the lifting leg touches down and jacks up the mobile platform for a certain height, and the mobile platform leveling control system generates a control signal through detected output signal change of the dual-axis tilt angle sensor; b, the mobile platform leveling control system stops the stretch of the lifting leg through the control signal to complete the touchdown detection on the lifting leg; and c, performing touchdown detection on other lifting legs one by one according to the steps a and b until the touchdown detection on all lifting legs is completed. The method has the advantages that: the whole system is more miniature and integrated, and has lower energy consumption; and the installation and debugging are simpler, and the performance and reliability are improved.

The invention relates to the field of active three-dimensional detection and image recognition, in particular to a fixed road surface detection device and a fixed road surface detection method using structured light aiming at problems existing in the prior art. The fixed road surface detection method comprises the steps that: the known structure light is projected by using a detection unit in a directed manner to assist a two-dimensional camera in photographing a road surface region to be detected, a control processing unit is used for carrying out abnormal detection on photographed images according to a target detection method so as to judge whether invaders exist in the images or whether flatness of the road surface meets a requirement, and the control processing unit can send out an alarm for the discovered abnormal condition. By repeating steps of the fixed road surface detection method in all regions to be detected on the runway, the complete runway road surface detection can be achieved.

The invention provides a zero back suction device for a disposable high-speed turbine dental drill handpiece, which is mounted at two ends of a handpiece head body; at the side where a drill point is mounted on the handpiece head body, the device is composed of an elastic shaft seal cover and a non-elastic shaft seal cover of a center framework of which the center is embedded with a hard substance, and the lip of the elastic shaft seal cover is matched with a rotor shaft of which the end part is conical; at the side of a handpiece head cover of the handpiece head body of the device, an O-shaped seal ring is mounted between a button cover body and a handpiece head cover body, and a ball non-return valve is additionally arranged at the center of the button cover body; and because anti-back suction measures are adopted at two sides of the handpiece head body, the content of back suction substances can be controlled to be very low, namely that an almost zero back suction state is realized.

The invention relates to an automatic control system for a stage follow spot light. The system comprises more than one follow spot light control device, more than one UWB positioning tag, eight UWB positioning anchor points, a positioning server and a control terminal. The eight UWB positioning anchor points and the more than one UWB positioning tag form a three-dimensional positioning system. Thepositioning server can acquire the coordinates of the positioning tags and control the follow spot light control devices to project light emitted by LED projection lamps to a target based on the coordinates of the positioning tags and the coordinates of the follow spot light control devices. On the basis of multi-sensor fusion, the high positioning precision is realized; and the real-time positioning is realized by using a low computing load.

This invention discloses a laser realizing tuning of Q-switched pulse width including: an output mirror, a laser rod, a Pockels cell, a polaroid and a totally reflecting mirror set orderly on a same line in co-optical axis, a pump source for pumping said laser rod, a moving desk for the mounting the totally reflecting mirror to move it to-and-fro along the optical axis and alter length of a laser cavity.

The invention relates to the field of active three-dimensional detection and image recognition, in particular to a movable type road surface detection device and method using structured light. The detection device and method aims at solving the problems existing in the prior art. According to the detection device and method, known structured light patterns are projected in an oriented mode, and two-dimension image detection is combined, so that invasive foreign matter, flatness and damage problems can be detected rapidly. The detection method comprises the steps that through an automobile-carried detection unit and a control and processing unit, a structured light generator projects the known structured light patterns to an area, to be detected, of a road surface in the detection process; meanwhile, the road surface covered by the structured light is shot through a camera, the control and processing unit calculates nonlinearity and non-continuity of the structured light patterns by extracting the structured light patterns projected to the detected area of the road surface, thereby whether the road surface has problems about flatness or invasive objects or not is judged, and accurate detection conducted on the whole detected area is achieved accordingly.