44results about How to "Increase the detection area" patented technology

The invention discloses a vehicle-mounted laser radar control method, a device and vehicle-mounted equipment. The method comprises the steps that sensing and control data of a vehicle and a laser radar are received; whether a critical detection blind zone exists in the laser radar is judged according to the sensing and control data; and when the critical detection blind zone exists, the laser radar is controlled to move toward an effective detection position specific to the critical detection dead zone. The movable vehicle-mounted laser radar is adopted, and the laser radar can be dynamically adjusted towards an object area according to requirement and conducts detection by dynamical adjusting and controlling means, so that the effective detection area of the laser radar is greatly improved.

The invention relates to a vehicle automatic driving method and apparatus, a computer device and a storage medium. The method comprises the steps of: determining a vehicle forwarding target area; sending a collection instruction to at least one unmanned aerial vehicle, wherein the collection instruction is used for indicating the unmanned aerial vehicle to collect the environmental information ofthe target area; receiving the environmental information sent by the at least one unmanned aerial vehicle; and determining a driving path of vehicle automatic driving according to the environmental information. Through the vehicle automatic driving method and apparatus provided by the embodiment of the invention, the environmental information is collected by the unmanned aerial vehicle, the detection area can be increased, the detection blind area can be reduced, more and richer environmental data are provided for a self-driving vehicle, so that the self-driving vehicle can perform perform more accurate path planning according to the collected environmental information, the safety of the self-driving vehicle is ensured, and the application range of the self-driving vehicle is expanded.

The invention discloses a four-dimensional electronic shadow imaging device, comprising a Femtosecond laser light source, a laser frequency tripling device, a Femtosecond electron gun and an electronic attitude control system, an ultrahigh vacuum cavity, an electron multiplication system, an imaging acquisition system, a vacuum pump system, a sample operating system, an optical path regulation system, a shutter and a time synchronization system. The four-dimensional electronic shadow imaging device has the advantages of shingle-shot imaging, high time resolution, high sensitivity to electromagnetic field information, high signal-to-noise ratio and on the like, and can perform time and space four-dimensional shadow imaging for the plasma forming process, the photovoltaic process or other ultrafast processes in which the transient electromagnetic field participates observably. The four-dimensional electronic shadow imaging device can record the four-dimensional time-spatial revolution information of the transient electromagnetic field within a time scale from hundreds of picoseconds to nanosecond by an ultrahigh time resolution superior to one picosecond.

An on-vehicle multiple-beam optical phased array laser three-dimensional imaging radar system relates to the technical field of radar engineering and settles problems of short-distance object detection and low imaging frame frequency in an existing laser three-dimensional imaging system. The on-vehicle multiple-beam optical phased array laser three-dimensional imaging radar system comprises a multi-beam laser module, a transmitting module, a receiving module, a central processor and a distance measuring unit. The multi-beam laser module comprises a beam splitter, a phase modulator array, a fiber amplifier array and a collimating beam spreading array. The transmitting module comprises a unidirectional glass array and an optical phased array. The receiving module comprises an optical filterarray, a double-bonding-lens array, a surface array APD array, a quenching circuit and a distance measuring unit. A ground objective area is scanned through multiple laser beams, thereby obtaining corresponding point cloud data. The obtained data are processed, thereby realizing objective three-dimensional image reconstruction with advantages of high frame frequency, high resolution and large visual field. A detecting task to a ground object is finished in real time in high speed. The on-vehicle multiple-beam optical phased array laser three-dimensional imaging radar system has advantages of high measurement speed and high measurement precision.

The invention discloses a constructional engineering quality flatness detection device which structurally includes supporting feet, adjustment rods, supporting blocks, a supporting frame, transverse rails and an activity detection structure. The supporting feet are horizontally installed at the lower ends of the adjustment rods, and the adjustment rods penetrate through the inner sides of the supporting blocks; the supporting blocks are horizontally installed inside the lower end of the supporting frame, the transverse rails are welded to the upper end of the supporting frame and distributed on the two sides, and the activity detection structure is installed between the transverse rails; and the activity detection structure includes a transverse sliding structure, a longitudinal rail structure and a movement detection structure, the transverse sliding structure is installed on the inner sides of the transverse rails, the transverse sliding structure is horizontally installed on the twosides of the lower end of the longitudinal rail structure, and the movement detection structure sleeves the outer side of the longitudinal rail structure. The activity detection structure is arrangedat the upper end of the transverse rails to enable the constructional engineering quality flatness detection device to be easier to close to wall edges and wall corners, the detection area is increased, and thus the accuracy of the overall flatness detection is improved.

The invention discloses an optical lens. In one embodiment, the optical lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from an object side to an image side along an optical axis, wherein the first lens has negative power and is in a crescent shape with a convex surface facing the object side, at least two adjacentof the second lens, the third lens, the fourth lens and the fifth lens are glued, the sixth lens has positive power, an object side surface and an image side surface of the sixth lens both are convexsurfaces, and the seventh lens has negative power. By the optical lens, wide focusing range, long-focus large visual-field angle, large central angle resolution and relatively high resolving power can be achieved.

The invention provides an indium tin oxide/vertical graphene photoelectric detector composite structure and a preparation method thereof and belongs to the technical field of a photoelectric detector.The photoelectric detector comprises the following components from the bottom up in sequence: glass serving as a substrate of the device, vertical graphene serving as an optical absorption layer andan electron transport layer of the device, an ITO (indium tin oxide) thin film serving as a transparent current assisted diffusion layer, and titanium/gold electrodes arranged at the two sides of thevertical graphene and connected to an external power source. Since the vertical graphene has a broadband spectrum response characteristic, the detector operates in bands from the visible light band tothe infrared band; the designed ITO thin film can effectively transfer photo-induced carriers, thereby suppressing defect influence and improving output photocurrent of the device; besides, the detector has high light absorption rate and light response, and can work under a low bias voltage; the process is simple and repeatable; and detection efficiency and rate of finished product of the detector are improved effectively.

The invention discloses an unmanned ship sea surface target tracking method and device based on multi-sensor fusion, and relates to the technical field of unmanned ship target tracking, and the method comprises the steps: obtaining original point cloud data collected by a laser radar; acquiring original millimeter wave data acquired by the millimeter wave radar; performing fusion processing on the original point cloud data and the original millimeter wave data to obtain fused target information; and tracking the target on the sea surface based on the fused target information. Target tracking is carried out based on the original point cloud data collected by the laser radar and the original millimeter wave data collected by the millimeter wave radar, that is, target tracking is carried out in a mode of combining the millimeter wave radar and the laser radar, the adaptive scene of the unmanned ship sensing system is expanded, the precision of obtained target information is improved, and the sailing safety of the unmanned ship on the sea is enhanced.

The invention provides a crystal array, a detector, medical detection equipment and a production method of the crystal array. The crystal array comprises multiple crystals arranged in an array, wherein each crystal is provided with a light-in face, a light-out face and a connecting face connected with the light-in face and the light-out face, the connecting face of at least one of every two adjacent crystals comprises a rough face and a smooth face connected with the rough face, and each rough face and the corresponding smooth face are arranged along the length direction of the corresponding crystal. According to the crystal array, the rough faces of the adjacent crystals can guarantee that air exists between the crystals, every two crystals are coupled through the air, the detection region of the crystal array is enlarged, and meanwhile it is guaranteed that a certain space exits between the smooth face of each crystal and the adjacent crystal; and through different crystal surface treatment, the transmission path of photons is improved, the crystals in a position spectrum are easy to distinguish, and the error ratio of position counting is effectively lowered.

The invention belongs to the research field of geophysical exploration technology, and relates to an active field nuclear magnetic resonance logging probe with an adjustable detection area and a detection method thereof. The probe comprises a cylindrical probe shell, wherein layout of components in the probe is specified by a cylindrical structure with a specific diameter, the size requirement ofa well logging borehole is met, and the components in the probe are protected; two axially magnetized permanent magnets, which are oppositely arranged in polarity, an annular magnetic field which is strengthened firstly and then weakened is generated outside the probe, and the external hydrogen protons can be magnetized to form a detection area; a moving unit consisting of a speed reducing motor,a worm gear and a rack, which can change the distance between the two permanent magnets, thereby changing the position of the detection area outside the probe. The layout mode of the permanent magnetsin the invention can generate a detection area with larger space outside the probe, and the signal-to-noise ratio of nuclear magnetic signals can be enhanced. The invention also utilizes the characteristic of self-locking of worm transmission, and changes the distance between the permanent magnets by controlling the speed reducing motor, thereby changing the position of the detection uniform areaand obtaining the detection capability of more radial detection depths.

The invention relates to a moon area observation and communication system and a bouncing device. The moon area observation and communication system comprises a supporting plate, a pushing part, a communication module and an optical camera shooting module. The optical camera shooting module is used for shooting the shape of the moon. The communication module is used for communication with externalequipment. The communication module is in communication connection to the optical camera shooting module. The communication module and the optical camera shooting module are arranged above the supporting plate and are fixedly connected to the supporting plate. The pushing part is arranged below the supporting plate for pushing the supporting plate to move in a vertical direction. By mounting the communication module and the optical camera shooting module above the supporting plate, the communication module and the optical camera shooting module can bounce to a preset height to communicate withthe external equipment and shoot the shape of the moon, so that a problem that the communication distance between a moon rover and a return cabin is short and the observation height is low is overcome. The detection area of the moon rover is expanded, and the moon area observation range is also expanded. The moon area observation and communication system is more favorable for conducting a moon probe project.

The invention discloses an automatic temperature-controlled barbecue grill. The automatic temperature-controlled barbecue grill comprises a barbecue plate, a heating device, a shell and a control device, wherein the barbecue plate is fixedly connected with the shell; the heating device is positioned under the barbecue plate and is electrically connected with the control device; a normally closed temperature switch which is used for detecting the temperature of the barbecue plate is inlaid in a region, which is surrounded by the barbecue plate, of the heating device; a heat-insulation ceramic cover which covers the normally closed temperature switch is arranged under the normally closed temperature switch; the heat-insulation ceramic cover is fixedly connected with the barbecue plate; and the heating device is electrically connected with the normally closed temperature switch. According to the automatic temperature-controlled barbecue grill, the temperature of the barbecue plate can be controlled automatically.

The invention relates to a boulder detection method, which comprises the following steps: putting an ultrasonic probe on a position to be detected through a drill hole, starting a driving device, driving a plurality of ultrasonic transducers in the direction vertical to the hole wall of a detection hole to ensure that the ultrasonic probe is tightly attached to and coupled with the hole wall of the detection hole, then detecting by using ultrasonic waves to obtain the accurate spatial position of a wave-facing surface of a boulder, transmitting data to a control computer through a data line, and generating the three-dimensional spatial position and size of the boulder in proportion. The method for detecting the boulders through the ultrasonic waves can greatly reduce the workload of exposing the boulders in the traditional exploration method, save a large amount of cost, effectively avoid the problems of boulder omission, low accuracy and the like caused by the boulder exploration in the traditional exploration method, improve the working efficiency of boulder exploration, improve the accuracy of boulder exploration and reduce the engineering construction risk.

The invention discloses a trans-impedance amplifier array, a light receiving device and a laser radar receiver, which can be applied to the field of automatic driving or intelligent driving. The light receiving device can comprise the trans-impedance amplifier array and a photoelectric sensor array, the trans-impedance amplifier array and the photoelectric sensor array are arranged in a stacked manner, and the trans-impedance amplifiers and the photoelectric sensors are connected in a one-to-one correspondence manner through the solder balls, so that the integration level of the light receiving device is improved, and the influence on the performance of the laser radar is reduced.

The invention discloses a water bottom detection system for hydraulic engineering. The water bottom detection system comprises detectors, a machine platform and a platform base, slide wheels are connected to the bottom of the machine base, and slide ways are matched with the slide wheels, and installed on a detection ship; the upper end of the machine platform is connected with a telescopic arm set, the telescopic arm set is composed of telescopic arms installed at the two sides, electric control rope releasing devices are connected to the telescopic arms at the two sides, ropes are connectedto the electric control rope releasing devices, detector installing shelves are connected to the lower ends of the ropes, and detectors are installed in the detector installing shelves. The whole systematic water bottom detection system is designed. On one hand, the slide ways are arranged on the detectors so that a detection rack can slide along the slide ways, then the detectors are driven to slide, the detachable range for entry diving each time is large, the two-way detectors are arranged, the water bottom environment is detected simultaneously, and the detection efficiency is effectivelyimproved; on the other hand, the detectors are put into water through the ropes and can be put down into a deep portion, the water bottom environment of a deep water area is detected, the practicability is high, and the application range is wide.

The invention relates to a method for detecting foreign matters, namely a waste material especially a cutting or stamping waste material, between a bending tool and a board piece to be molded. The method comprises the following steps that the bending unit which comprises an upper tool, a lower tool, an equipment controller, at least one light source and at least one light sensor for detecting theforeign matters is provided; in an opening position of the bending unit, at least one board piece is provided in a pre-prescribed position between the upper and lower tools; and the foreign matters between the bending tool and the board piece are detected by using the light source and light sensor to measure the contour of the lower tool between the light source and the light sensor, comparing thecontour of the lower tool with a pre-prescribed reference contour and/or a theoretical contour in the equipment controller, start molding of the board piece when the contours are consistent, or interrupting or ending the method when there is a deviation therebetween.