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223results about How to "Instructions are accurate" patented technology

Driving route indicating method and system applied to intelligent driving vehicles

ActiveCN104842860APath instructions are clearClear directionsOptical signallingNetwork packetOn board
The invention provides a driving route indicating method and system applied to intelligent driving vehicles and belongs to the technical field of vehicles with an aim to solve the problem about how to efficiently indicate routes that the vehicles are about to drive on in the prior art. The method includes: A, establishing connection; B, receiving and analyzing a data packet; C, controlling and adjusting horizontal rotational ranges of laser lamp units according to route planning information; D, determining laser projection distance and controlling and adjusting pitching angles of lasers according to vehicle speed information. The system comprises a plurality of lasers, a plurality of electric supports used for adjusting the pitching angles of the lasers and an on-board control unit used for receiving the information, each laser comprises laser controllers and a plurality of laser lamp units correspondingly connected with the laser controllers, the electric supports and the laser controllers are respectively connected with the output end of the on-board control unit, and the on-board control unit performs adjustment on the beam angle and projection distance according to the route planning information and vehicle speed. By the method and the system, the capability of the vehicles in avoiding risks can be improved.
Owner:ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1

Real-time monitoring device for pavement paving thickness and ironing vibration frequency

The invention belongs to the field of road construction quality control, and provides a device which can be used for automatically monitoring the pavement paving thickness and ironing vibration frequency of a highway with high precision in real time. The device can be used for achieving real-time measurement on the pavement paving quality, can also be used for remotely sending measurement information to a database for follow-up quality evaluation application, ensures that the paving quality can meet design requirements, can perform real-time alarm on substandard conditions, and ensures that a statistical diagram is formed to be taken as the basis for relevant departments to carry out the paving quality management. Therefore, the device adopts a technical scheme as follows: a real-time monitoring device of the pavement paving thickness and ironing vibration frequency comprises a paving thickness and ironing vibration measurement device, a GPS real-time positioning device, an integrated controller and a data wireless transmission device (DTU), wherein the paving thickness and ironing vibration measurement device comprises a steel-made bracket, an inclined moving beam, a rubber wheel, an acceleration transducer and two tilt angle sensors. The device provided by the invention can be mainly applied to road construction quality control.
Owner:TIANJIN UNIV

Automobile digitalization instrument controlling and displaying method and device

The invention relates to a control display method of an automobile digital instrument and a device, which are used for displaying various status signals of the automobile in running process. The aim of the invention is realized as follows: the device consists of a CAN bus, an MCU, a pointer digital instrument, an information indicating light, an LCD digital display screen and an LCD comprehensive display screen; the running steps include start; communication management of the CAN bus; receiving and processing information sent by the CAN bus by virtue of the MCU; the display of the pointer instrument, the display of a warning signal; mileage display; comprehensive display; and stop. The invention uses the pointer instrument of a stepping motor with accurate indication. By using the comprehensive display screen, the invention has powerful comprehensive information display function, complete menu operation function, multi-purpose function of one screen and clear voice and character warning function. The invention is also characterized by accurate and reliable mileage display, complete CAN communication network management and unique low power consumption design.
Owner:北京长城华冠汽车技术开发有限公司

Artificial chordae implantation system provided with detection device

The invention discloses an artificial chordae implantation system provided with a detection device. The artificial chordae implantation system comprises a clamping device, a puncture device, a push device and a detection device, wherein the push device comprises a push catheter; the clamping device comprises a clamping push rod in which an artificial chordae is accommodated as well as a distal clamping head and a proximal clamping head which are cooperated for clamping a valve leaflet; the detection device comprises at least one probe; the probe is movably inserted into the push catheter; a detection outlet is kept in the clamping surface of the proximal clamping head or the distal clamping head, and correspondingly, a probe accommodating cavity, which is opposite to the probe outlet, is kept in the clamping surface of the distal clamping head or the proximal clamping head; and the distal end of the probe is accommodated in the probe accommodating cavity from the probe outlet when thedistal clamping head and the proximal clamping head are closed. According to the artificial chordae implantation system provided by the invention, it can rapidly and accurately detect whether the valve leaflet is clamped between the distal clamping head and the proximal clamping head or not via the detection device of a mechanical structure; the system is simple in structure, simple and convenientto operate and low in surgical risk; and the system can reduce production cost of apparatuses and reduce economic burdens of patients.
Owner:HANGZHOU VALGEN MEDTECH CO LTD

Map construction method and device, electronic equipment and storage medium

ActiveCN113284240AReasonable and efficient autonomous navigation operationHigh precisionImage enhancementImage analysisEngineeringMobile device
The invention relates to a map construction method and device, electronic equipment and a storage medium. The method comprises the steps: obtaining a scene image and a depth image of a target scene collected by mobile equipment, and obtaining a relative pose of the mobile equipment at a current moment; according to the scene image and the depth image, determining a first spatial feature point of the target scene at a previous moment and a second spatial feature point of the target scene at a current moment, the time sequence of the previous moment being before the current moment, the first spatial feature point being matched with the second spatial feature point; optimizing the relative pose according to the first spatial feature point and the second spatial feature point to obtain positioning information of the mobile device at the current moment; and according to the positioning information and the depth image, determining a grid map corresponding to the target scene, the grid map being used for indicating a drivable area in the target scene, so that a mobile device performs navigation operation according to the grid map. According to the embodiment of the invention, the map construction precision and efficiency can be improved.
Owner:SHENZHEN SENSETIME TECH CO LTD

Leak-detecting method for cooling system of blast furnace

The invention discloses a leak-detecting method for a cooling system of a blast furnace, which comprises the following steps: firstly, confirming a leaking cooling pipe, connecting a transparent pipe with a vent valve of a section of cooling pipe at the middle part, and closing a communicating valve at the lower part of the section of cooling pipe at the middle part; then closing a return valve of the leaking cooling pipe, and opening the vent valve of the section of cooling pipe at the top of the leaking cooling pipe; raising the pipe end of the transparent pipe to the position of the vent valve of the section of cooling pipe at the top of the leaking cooling pipe, opening the vent valve connected with the transparent pipe to lead water in the leaking cooling pipe to freely decline and keep synchronous with water level indicated by the transparent pipe, and further confirming a water leaking position; and if the water level declines all the time, and till the joint of the transparent pipe and the vent valve still shows no signs of stopping, the connecting position of the transparent pipe can be moved downwards, and the method is repeated for continued observation until the water level stops declining, thus being capable of confirming the water leaking position. The method is convenient for operation and easy to master.
Owner:ANYANG IRON & STEEL

Device for demonstrating and adjusting positioning parameters of automobile steering wheels

ActiveCN102831815AImprove teaching effectEasy to demonstrate and adjustEducational modelsVehicle frameCamber angle
The invention discloses a device for demonstrating and adjusting positioning parameters of automobile steering wheels. The device comprises a frame and wheels, wheel forks are respectively connected to inner sides of the front wheels and connected with middles of kingpins by front wheel camber angle adjusting devices, the lower end of each kingpin is hinged with one end of a fixing ball-joint connecting rod, the other end of each fixing ball-joint connecting rod is connected with a support plate, the upper end of each kingpin is connected with the corresponding support plate by a kingpin inclination angle adjusting device, each support plate is connected with a caster angle indicator board by a kingpin caster angle adjusting device, the caster angle indicator boards are fixed onto the frame, a steering mechanism is disposed on the frame, and front wheel toe-in adjusting devices are arranged in the steering mechanism. By the device, the complicated and abstract positioning parameters of the steering wheel become simple and specific, so that a teacher can visually demonstrate the principle, the formation process and the adjusting method of the positioning parameters of the four steering wheels of an automobile, and a teaching effect is greatly improved.
Owner:CHENGDU AERONAUTIC POLYTECHNIC +1
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