488results about How to "Reduce blind spots" patented technology

The invention discloses a vehicle identification method and device and a vehicle. The method comprises the steps that a first image and a second image are acquired, the first image is a color image or a brightness image, and the second image is a depth image; road lane lines are acquired according to the first image; the road lane lines are mapped to the second image according to the interleaving mapping relation between the first image and the second image so that a vehicle identification range is generated in the second image; and the vehicle is identified according to the vehicle identification range. According to the method, the opposite-side vehicle can be rapidly and high-precisely identified, and alarm information can be rapidly and reliably generated on the basis of the identified opposite-side vehicle so that valuable braking reaction time can be won for the driver of the vehicle or the opposite-side vehicle and thus driving safety can be further enhanced.

The invention relates to a rainfall distribution and dynamic measurement method based on a big-data mobile communication network. The method comprises the following steps: (1) constructing a central server which is connected with a mobile terminal base station and establishing a data communication link among mobile terminals, base stations and the central server; (2) collecting transmitting power of the base stations and power, received by the base stations, of corresponding mobile terminals in real time; (3) establishing one-to-one correspondence relationships between the mobile terminals and some base stations and calculating the path attenuation of the communication link between each mobile terminal and the base station; (4) by taking the transmitting power of the base stations as a reference, calculating attenuation of signals of the mobile terminals caused by non-meteorological factors such as free space propagation loss, buildings, vegetation, unset obstacles and the like; obtaining rain-induced attenuation values of mobile terminal signals in unit distance; establishing correlative relationships between the signal attenuation characteristic of the mobile terminals and rainfall intensity distribution; carrying out fusion analysis with professional meteorological data such as a rain gauge, weather radar and the like to obtain areal distribution of rainfall and dynamic changes of rainfall.

The invention discloses a point cloud quality evaluating and unmanned aerial vehicle (UAV) track planning method for UAV scanning reconstruction, which includes the following steps: the original pointcloud model of a scene is acquired and reconstructed through scanning by a UAV; the points of the point cloud model are classified by using a kd tree; for each point in the point cloud model, the probability that the point is a hole boundary point is estimated based on three criteria respectively, and weighted averaging is carried out on the three probabilities to comprehensively judge whether the point is a hole boundary point; a hole boundary line is generated by searching for closest points, in order to distinguish between different holes; a road map with visibility information is constructed in a point cloud model scene through a ball filling method; an optimal rescanning track of the UAV is generated; and finally, a result is output, a generated path is fed back to the UAV, the UAV flies along the planned path, and the hole area of the point cloud model is repaired. The method can assist an UAV in quickly and automatically rescanning a scene to be reconstructed and generating a more accurate building model, so as to reduce the hole area with texture missing in a building point cloud model.

The invention discloses an inversion method of micro-pulse differential absorption lidar water vapor spatial and temporal distribution. The inversion method comprises wavelength selection of water vapor detection, calculation and correction of absorption cross sections of water vapor absorption wavelengths and non-absorption wavelengths, and inversion and calibration of water vapor concentrations. An automatic continuous detection device of the micro-pulse differential absorption lidar water vapor spatial and temporal distribution is employed to obtain characteristic backward scattering signals of water vapor absorption in specific spectral lines, the backward scattering signals are subjected to inversion and calibration by a computer utilizing a differential absorption spectrum analysis method, and high-time-resolution, high-spatial-resolution and high-precision water vapor stereo distribution data is obtained.

The invention discloses a spider-imitating multi-foot robot platform which comprises a machine body. A plurality of mechanical legs driven by a steering engine are distributed on the outer side of the machine body. A visual system is arranged above the machine body and comprises a stereo camera and a monocular camera. The stereo camera and the monocular camera are arranged on a shell. The shell is installed on the machine body through a drive mechanism. According to the visual system, the stereo camera and the monocular camera are reasonably distributed, the visual dead angle is small, a blind area is small, an object in front of main eyes can be positioned, and meanwhile objects on the two sides can also be monitored and analyzed. Spider-imitating design is adopted on the mechanical legs, the mechanical legs have three degrees of freedom, the shock-absorbing effect is good, and movement is flexible. The machine body is simple and practical. By means of the reasonable design, the spider-imitating multi-foot robot experiment platform can be built easily and conveniently at low cost, and can be used for robot complex terrain passing ability experiments and road passing ability experiment researches.

The invention provides a parking assisting system with comprehensive function and a control method thereof. The parking assisting system is used for assisting a driver to park safely. The system comprises a control unit and a gear sensor, a loudspeaker, a display and radar probes which are respectively connected with the control unit. The system is characterized in that a plurality of radar probes are respectively installed on the bumpers in the front and rear parts of a vehicle. In order to control the radar probes installed on the bumpers in the front of the vehicle conveniently, the control unit is further connected with a vehicle speed sensor. In the invention, the radar probes installed on the bumpers in the front of the vehicle are added so as to reduce the visual dead angle of the driver and help the driver park and transfer in narrow space. The parking assisting system further adds a self-examination step to the radar probes so as to avoid the situation that the radar probes break down but the driver does not know, thereby improving the safety of parking. The parking assisting system is triggered by means of a reverse gear signal and a vehicle speed signal, therefore, the control method is more reasonable and effective.

The invention discloses a bridge detecting unmanned aerial vehicle system in a non-satellite navigating and positioning environment. The bridge detecting unmanned aerial vehicle system comprises an unmanned aerial vehicle flight platform, an airborne combined positioning module, an airborne monitoring module and a ground station control system, wherein the unmanned aerial vehicle flight platform comprises an unmanned aerial vehicle body, a power supply, a power module, a flight controller and an airborne wireless communication terminal; the airborne combined positioning module comprises a microinertia measuring unit, an ultra-wideband navigating and positioning module, an optical flow measuring module and a barometer; the airborne monitoring module comprises an airborne environment monitoring sensor, a vision sensor and a radar sensor; and the ground station control system comprises a wireless ground infrastructure, ground station planning control software and ground station data processing software. The bridge detecting unmanned aerial vehicle system adopts an integrated navigating and positioning way based on UWB, MIMU, OF and RAR, improves the positionability and the navigatingand positioning accuracy of an unmanned aerial vehicle in a global satellite navigating and positioning environment, and preforms close-distance obstacle observation in a complex bridge environment through the optical flow module.

The invention relates to a digital coal stocktaking system comprising a laser scanning module, a spatial positioning module, an intelligent data acquisition module, a data transmission module, and a terminal processing module. The laser scanning module sends acquired surface shape information of a measured object to the intelligent data acquisition module. The spatial positioning module sends acquired spatial position acquisition of a bucket wheel machine to the intelligent data acquisition module. The intelligent data acquisition module sends the surface shape information and the spatial position acquisition to the terminal processing module through the data transmission module. The terminal processing module obtains the surface shape and three-dimensional coordinate data of the measured object according to the surface shape information and the spatial position acquisition, and then carries out three-dimensional modeling and displaying on a coal pile. According to the invention, a coal stocktaking instrument mounted on a portal frame is wide in range of scanning, and is not constrained by the coal height of a coal yard in scanning. A GPS differential system for spatial positioning and the wireless network transmission technology are adopted. Compared with other schemes, the positioning accuracy and the real-time performance of data transmission can be better guaranteed.

The invention relates to a stereomicroscope side lighting method and the dark-field stereomicroscope thereof. The method uses the beam emitted from the light source to lighting the observed sample from the side of the stereomicroscope stage, and the beam is satisfied the following characteristic: firstly,the beam and the observed sample are in a same plane spatial limit, secondly, the included angle between the beam and the symmetrical line O1O2 of the two object lens primary optic axis of the stereomicroscope is 80 to 100 degrees. The design consideration of the dark-field stereomicroscope which is an improvement for the traditional stereomicroscope, is enable the last light part directly emitted from the light source or through the optical instrument to change the direction to horizontally locate the observed sample stage, so that the symmetrical line O1O2 of the stage and the two object lens primary optic axis is arranged vertically. By using the method and the dark-field stereomicroscope thereof can effectively lighten the interference of the background light, greatly improve the contrast and the signal to noise ratio of the observed sample, especially fit for the liquid phase dissection observation.

The invention discloses a bolt crack detection method and a bolt crack detection device. The bolt crack detection method includes the following steps: S1, designing and processing a comparison test block containing a standard depth simulated crack; S2, customizing an ultrasonic dual-crystal probe; S3, Adjust the ultrasonic sensitivity on the comparison test block, take 60% of the ultrasonic height as the detection reference wave height; S4, if there is no waveform signal exceeding the reference wave height between the initial wave and the bottom wave, it is determined that the bolt has no cracks; There is a waveform signal exceeding the reference wave height between the wave and the bottom wave, and it is determined that the bolt crack exceeds the standard. The bolt crack detection device includes an ultrasonic flaw detector, an ultrasonic dual-crystal probe, a coupling agent, and a comparison test block; the coupling agent is used to couple the ultrasonic dual-crystal probe to the nail cover of the detected bolt; the ultrasonic dual-crystal probe The crystal probe is connected to the ultrasonic flaw detector through a signal line. The bolt crack detection method and device of the invention can meet the detection of small cracks and has high sensitivity.

The invention relates to an intelligent security alarm and building intercom integrated system, which is composed of a camera, an infrared sensor, a smoke sensor, a door and window sensor array, a vibration sensor, a security alarm host, an alarm device, a display, an alarm server, a wireless communication module, a property management center, a mobile phone terminal, a building intercom module and an access controller, wherein the camera, the infrared sensor, the smoke sensor, the door and window sensor array and the vibration sensor are connected with the security alarm host; the security alarm host is connected with the alarm device, the display and the alarm server; the alarm server is connected with the wireless communication module; the wireless communication module is connected with the property management center, the mobile phone terminal and the building intercom module; and the building intercom module is connected with the access controller. The intelligent security alarm and building intercom integrated system has the advantages of simple structure, reasonable design, higher security, better timeliness, lower cost and longer transmission distance, and has good practical popularization value.

The invention discloses a multi-view stereoscopic vision system for indoor scene virtual reality live broadcast. The multi-view stereoscopic vision system for indoor scene virtual reality live broadcast includes M indoor guide rails, N independent cameras sliding on the M guide rails, N drive dollies which can drive the cameras to move on the guide rails, a processor and virtual reality output equipment, wherein M>=1, and N>=3; the N independent cameras can be combined two by two to shoot a target object, and can transmit the shot information to the processor; after processing the information, the processor transmits virtual reality video signals to the virtual reality output equipment; and a user can observe the target object through the virtual reality output equipment. As the plurality of cameras can form multi pairs of binocular stereoscopic vision systems two by two, the multi-view stereoscopic vision system and system for indoor scene virtual reality live broadcast can observe and shoot the object to guarantee that the environment information of the object and the surrounding environment of the object can be maximally extracted so as to enable 3D modeling to be more exquisite.

The invention discloses a rearview mirror out of an automotive vehicle, which comprises a mirror shell and a mirror surface, wherein the mirror surface is arranged at the front side of the mirror shell, a foresight LED (light emitting diode) illuminating lamp is arranged at the back of the mirror shell, and the foresight LED illuminating lamp is electrically connected with a headlamp. In the invention, the foresight LED illuminating lamp is arranged on the mirror shell of the rearview mirror out of the automotive vehicle, so that the illuminating region of the headlamp can be greatly enlarged, a vision blind area can be reduced, and the rearview mirror is simple in structure and low in cost.

A rapid treatment system for a soft soil foundation comprises a plurality of drainage plates vertically inserted into a soft soil stratum; the drainage plates are connected with a drainage pipe through hand-shaped joints; the drainage pipe is connected into a gas-liquid dispersion tank; a self-controlled drainage pump is arranged in the tank; above the tank, a vacuum-pumping pipeline system is connected with a high-vacuum pump; pressurization pipes are arranged in the soft soil stratum between the drainage plates; and the pressurization pipes are connected with a booster pump. According to the technology and a method adopted by the invention, adverse effects of well resistance and a smearing effect on drainage consolidation can be obviously reduced, blocking of a drainage channel is reduced, a dead zone of a traditional vacuum preloading drainage channel can be eliminated, dependence on sand resources in the traditional technology can be eliminated, vacuum-pumping time is shortened and vacuum-pumping units are reduced, and 100 percent of operation rate is realized; moreover, the drain pipe is recovered, so that power consumption is reduced, engineering cost is reduced, and the construction period is shortened.

The invention relates to a system and a method for acquiring and storing images. The system comprises an image acquisition device, an outer cavity device and an image processing device; the image acquisition device comprises an image sensor array unit, a storage unit, an energy unit and a control unit; the energy unit comprises a wireless switch, a cell and a wireless radio-frequency energy extracting module for extracting energy from radio-frequency energy signals; by receiving the radio-frequency energy signals and command signals sent by the outer cavity device, the control unit controls cell power supply through the wireless switch according to the command signals when an image sensor is placed in a cavity to carry out acquisition and storage of image data, controls power supply of the wireless radio-frequency energy extracting module through the wireless switch and sends the stored image data to the outer cavity device when the image acquisition device is moved out of the cavity; the outer cavity device receives the image data transmitted by the image acquisition device and stores or transmits the image data. The system and the method reduce power consumption to great degrees, are applicable to image acquisition in a biological cavity, and can realize full-view image acquisition.

The invention discloses a flatness detection system and method. The flatness detection system comprises a conveying device provided with a conveying belt, a detection device arranged above the conveying belt, a protective cover covering the detection device and a control device connected with the conveying device and the detection device. The detection device comprises a first detection mechanism, a second detection mechanism and a third detection mechanism which are arranged in sequence. The first detection mechanism, the second detection mechanism and the third detection mechanism are close to the same side. The number of sensors used in detection is small, all point positions on the four sides and diagonal lines of a rectangular objected to be detected can be acquired, and the number of blind points is small. A high-accuracy displacement sensor is adopted for detection, detection accuracy is high, a servo motor is utilized to drive the sensor to move so that the detection speed can be high and be adjusted.

The invention discloses a driving visual field automatic regulating system comprising a central lock connected with an ECU, a speed sensor, a memory, a timer, a vehicle outer image identification device used for collecting human body form data, an inner image identification device used for detecting human eye position information, a memory used for storing human body form data and corresponding optimum visual field data, a seat backrest pressure transducer used for measuring human body weight, a seat adjusting device used for adjusting a seat position and a backrest inclination, a steering wheel adjusting device used for adjusting steering wheel orientation and height, and a rearview mirror adjusting device used for adjusting a rearview mirror angle; the driving visual field automatic regulating system can completely realize intelligentize adjusting, needs not driver operation, the seat position and backrest inclination can be automatically adjusted, the steering wheel orientation and height can be automatically adjusted, and rearview mirror angle can be automatically adjusted, thus ensuring the driver to drive with the best driving visual field, maximumly reducing a blind area, and greatly improving driving safety.

The invention relates to a system and method for monitoring an engineering project operation site. The system comprises an information collecting device, a local area network router and a background server. The information collecting device is connected with the local area network router in a wireless mode, collects project site video and picture information, device information and worker's body information, and sends the information to the local area network router. The local area network router is connected with the information collecting device and the background server, receives the project site video and picture information, the device information and the worker's body information sent by the information collecting device and sends the information to the background server. The background server is connected with the local area network router, receives the project site video and picture information, the device information and the worker's body information sent by the local area network router and performs checking and supervision. The human cost can be reduced, the goal of supervising the operation site is achieved, the supervision efficiency is improved, the safety of the operation site is guaranteed to the largest degree, and the potential risk is eliminated.

The invention relates to a multi-target continuous tracking system and a method based on a cloud deck control technology. The system comprises a main control board, a bolt cloud deck assembly and a ball cloud deck assembly, wherein the bolt cloud deck assembly and the ball cloud deck assembly are connected with the main control board; the bolt cloud deck assembly comprises a wide-angled camera, abolt motor for driving the wide-angled camera to move, and a bolt cloud deck control module for controlling the bolt motor to rotate; the ball cloud deck assembly comprises an integral zooming machinecore, a ball motor for driving the integral zooming machine core to move, and a ball cloud deck control module for controlling the ball motor to rotate; the main control plate comprises a main control module, a GPS (Global Position System) module, a communication module and an image processing module; the GPS module, the communication module and the image processing module are connected with themain control module; the wide-angled camera and the integral zooming machine core are connected with the image processing module; the bolt cloud deck control module and the ball cloud deck control module are connected with the main control module; the main control plate is connected with an upper computer. The system has the advantages that through the multi-camera linkage, the real-time monitoring is realized; the prevention effect is achieved.

The invention relates to a method for fusing two-dimensional video information and three-dimensional geographic information. For a target observation point area, the two-dimensional video informationis shot by using a plurality of cameras at multiple angles, and a visual cone is constructed by using parameters of the cameras to represent a visual range of the two-dimensional video information. The method comprises the following steps: 1, obtaining two-dimensional video information shot by each camera, and solving a coverage area of each independent camera; 2, fusing the coverage areas of theplurality of cameras to obtain fused two-dimensional video information; 3, performing optimization processing on the fused two-dimensional video information, and cutting off two-dimensional data information which is not in a target observation point area; 4, mapping the optimized two-dimensional video information into three-dimensional map information; and 5, updating and mapping the two-dimensional video information in real time to realize real-time fusion of the two-dimensional video and the three-dimensional geographic information. According to the invention, the dynamic coherent scene is completely mapped to the three-dimensional map, so that the coherence and accuracy of the three-dimensional map are improved.

The invention discloses a multi-bend part and a control device of an endoscope, including an endoscope barrel, an endoscope lens and an endoscope neck which are arranged on the front end of the endoscope barrel, and an operation part which is arranged on the back end of the endoscope barrel. At least two groups of snake bone components of a front end snake bone component and a near end snake bone component are arranged between the endoscope barrel and the lens. At least one multi-group angle spiral button is arranged on the operation part, which is corresponding to the snake bone components. The multi-group angle spiral button is corresponding to and connected with an angle sprocket through a shaft. A section of angle chain is arranged on the angle sprocket in a way of meshing. The two ends of the angle chain are connected with an angle control rope. The two ends of the angle control rope are respectively and fixedly connected with the front ends of the front end snake bone component and the near end snake bone component. The invention is mainly applicable to medical and industrial endoscopes, which results in that the bending angle of the bending part of the endoscope is greatly increased, the operation is more flexible and convenient, the check blind spot is reduced to zero and the accuracy for the diagnosis and the endoscopic therapy is greatly improved.