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869results about How to "Avoid crowding" patented technology

Network-connected vehicle positioning method based on 3D laser radar and V2X

The invention discloses a network-connected vehicle positioning method based on a 3D laser radar and V2X. The method comprises the following steps of using a laser radar installed on a network-connected vehicle to scan an environment around a network-connected vehicle so as to obtain radar data; preprocessing the radar data, acquiring preprocessed laser point cloud data, converting the point clouddata to a network-connected vehicle coordinate system, and then, according to the density change characteristic of a radar point in the point cloud data, using a raster map to carry out point cloud segmentation so as to realize the separation of a pavement and barriers; carrying out the clustering of the barriers, acquiring a radar point set corresponding to each barrier, and then obtaining the contour of the barrier, then carrying out linear fitting to obtain the shape of the barrier, and combining the size of the barrier to realize barrier identification; and finally, realizing the exchangeof barrier information among other network-connected vehicles through a V2X module. In the invention, a problem that an existing vehicle positioning method has low accuracy and poor reliability is solved, and simultaneously problems that a requirement to the speed of a mobile communication network is high and cost is high are alleviated.
Owner:CHANGAN UNIV

Flip-chip LED chip structure and manufacturing method thereof

The invention discloses a flip-chip LED chip structure and a manufacturing method thereof. The LED chip comprises an epitaxial layer taking sapphire as substrate and an electrode layer taking SiO2 / Si as substrate; holes of periodical structure are etched on the front surface of the sapphire substrate, and random patterns are etched on the back surface; a growth buffer layer, an n type GaN layer (n-GaN), an MQWs (multi quantum wells) layer and a p type GaN layer (p-GaN) are successively grown on the sapphire substrate etched with holes as the epitaxial layer; one or more negative electrode grooves are etched on the p type GaN layer (p-GaN); a p type contact layer is sputtered on the p type GaN layer (p-GaN); an n type ohmic contact layer is electroplated on the n type GaN layer (n-GaN) exposed after etching; titanium (Ti), platinum (Pt) and aurum (Au) are successively deposited on the SiO2 / Si substrate as an electrode layer; the electrode distribution on the electrode layer is coincident with that on the etched epitaxial layer; and the LED chip is formed by bonding the epitaxial layer on the front surface of the sapphire substrate and the electrode layer on the SiO2 / Si substrate with Au solder. The structure has the advantages of stable performance, high utilization rate of electric energy and long service life.
Owner:CHONGQING UNIV

Water heater with function of self removing scale of heat preservation container and heating rods

ActiveCN108826661AReduce the level of complexityReduce consumptionWater heatersImpellerHeating efficiency
The invention discloses a water heater with a function of self removing scale of a heat preservation container and heating rods. The water heater comprises a shell and the heat preservation containerarranged in the shell, wherein the two heating rods are horizontally installed on the inner side wall of the heat preservation container; the water heater is characterized in that a reciprocating screw rod is rotationally connected between the centers of the left end surface and the right end surface of the heat preservation container, a water inlet pipe is arranged at the upper end of the shell,an impeller is fixedly connected to the outer side of the reciprocating screw rod in a sleeved mode, a water flow input by the water inlet pipe impacts the impeller and drives the reciprocating screwrod to rotate, a lead screw nut is installed on the reciprocating screw rod, the side wall of the lead screw nut is perpendicular to and fixedly connected with connecting rods, the outer ends of the two connecting rods are connected with the same fixing ring, and an annular groove is formed in the outer ring wall of the fixing ring in the circumferential direction of the fixing ring. According tothe water heater, the concept is novel, scale removing can be carried out on the surface of the water heater heat preservation container and the surfaces of the heating rods after water heating through the water heater every time, so that the heating efficiency and the heat preservation effect of the water heater are guaranteed.
Owner:SHANDONG HUASHENGLONG SOLAR TECH

Device for breaking walnut shells and taking walnut kernels, having functions of self-positioning, pre-breaking shells, equidirectional spiral self-grading and flexible extrusion

ActiveCN106473167AReduce grading processPrecise pre-crackingHuskingHullingWalnut NutReciprocating motion
The invention discloses a device for breaking walnut shells and taking walnut kernels, having functions of self-positioning, pre-breaking shells, equidirectional spiral self-grading and flexible extrusion. The device comprises an intermittent feeding device, the a shell pre-breaking device, a flexible shell breaking device and a separating device, which are fixed on a machine frame, wherein the intermittent feeding device is used for performing intermittent batch feeding for the shell pre-breaking device; the shell pre-breaking device comprises an extruding part and a blanking part which are mutually matched; the extruding part is in reciprocating movement, and is matched with the blanking part for extruding walnuts, so that cracks are generated in the walnuts; the blanking part is in reciprocating movement, so that the extruded walnuts fall off to the flexible shell breaking device; the flexible shell breaking device is used for breaking walnut shells; and shells and kernels of the walnuts after shell breaking are separated for storage through the separating device. The device disclosed by the invention integrates a plurality of systems, and is compact in structure, the manufacturing cost of a machine is reduced, the occupied space for the operation of the machine is also reduced, and the miniaturization and the high efficiency of the machine are facilitated; in structure design, multiple connections including splicing, combining and the like for cooperating work can be realized; and the requirements of various production scales and the requirements of various production sites can be met, and the device is also suitable for families, and is widely applied.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY +2

Intelligent control system of electric wheel chair

The invention relates to an intelligent control system of an electric wheel chair, comprising an ARM (Automated Route Management) master control module, an operating handle, an electronic compass, a remote wireless communication module, a distance measuring module group, a DSP (Digital Signal Processing) motor control module and a motor driving module, wherein the ARM master control module is connected with the electronic compass, the distance measuring module group and the DSP motor control module through a CAN (Controller Area Network) bus to form a one-to-many CAN network; as node equipment independent from the ARM master control module, the operating handle is accessed to the one-to-many CAN network; the DSP motor control module is connected with DC driving motors through the motor driving module; and each DC driving motor is provided with a photoelectric encoder and forms motor rotating speed closed-loop control. The invention realizes the intelligentized control function of the electric wheel chair and ensures the instantaneity, the extendibility and the portability of the intelligent control system by adopting an embedded type system and modular design and has rich functions, flexible control, convenient use, and the like.
Owner:TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Stationary shoulder friction stir welding device and method for variable-angle fillet joints

The invention provides a stationary shoulder friction stir welding device for variable-angle fillet joints. The stationary shoulder friction stir welding device comprises a stationary shoulder stirring head and a matched platform capable of changing the fillet weld angle and fixing a to-be-welded workpiece. The stationary shoulder stirring head comprises a stirring pin, a stationary shoulder, a rigid connecting device and a sealing stacking ring, wherein the stationary shoulder is connected with a spindle of a friction stir welding machine through rigid fixation, and the stainless steel sealing stacking ring is arranged between the stirring pin and the stationary shoulder and used for preventing aluminum alloy from being squeezed into a gap between the stationary shoulder and the stirringpin in the welding process. The platform capable of fixing the to-be-welded workpiece comprises a base plate for supporting an aluminum alloy plate, a semicircular sliding block capable of changing the inclination angle, pressing plates for fixing the sliding block, a base for supporting the sliding block, and a workbench with T-shaped grooves. According to fillet welds with different thicknessesand different angles, welding can be carried out only by adjusting the angles of the stationary shoulder and the base plate, and thus the time and cost for replacing the platform capable of fixing theto-be-welded workpiece when fillet welds with different angles are welded are avoided.
Owner:NANJING UNIV OF SCI & TECH

Cooperative control method of left-opened-door bus special phase setting and social traffic flow

The invention discloses a cooperative control method of a left-opened-door bus special phase setting and social traffic flow, which comprises the following steps: setting a bus station and a stereo facility which help pedestrians to cross a street; detecting a bus; determining the running time of the bus; determining a signal phase of the bus which drives through an intersection; and setting the bus special phase and a cooperative control plan. According to the invention, the bus stations in two directions are combined and placed at a median strip of the intersection, so that not only the land is saved, but also the bus station points are easier to recognize, and meanwhile, a new concept for planning and constructing of a public transit network is provided, that is, the public transit network is connected based on the bus stations arranged at intersections. With the adoption of the method, the situation that the bus does not stop at an intersection without a bus station while stops at an intersection with a bus station can be basically realized, so that passengers waiting for a long time at an intersection with a bus station can be avoided, thereby shortening the whole driving time of the bus and improving the whole operation efficiency of the bus system. Moreover, the method is functioned as the cooperation of the social traffic flow, so that the passing efficiency of the whole intersections is guaranteed.
Owner:SOUTHEAST UNIV

Automatic production system for highly-efficient walnut shell breaking and kernel obtaining and shell-kernel separation

The invention discloses an automatic production system for highly-efficient walnut shell breaking and kernel obtaining and shell-kernel separation, and the automatic production system solves problemsthat the existing walnut shell breaking device can not adapt to walnuts in different sizes, and the shell breaking rate and the shell breaking efficiency can not be guaranteed. The automatic production system is capable of realizing highly-efficient shell breaking and kernel obtaining and shell-kernel separation for walnuts in different varieties, high in production rate and automation degree, improved in whole kernel rate and kernel obtaining rate, reduced in damage rate of walnut kernels and capable of ensuring high efficiency of shell breaking and thoroughness degree of shell-kernel separation. A technical scheme of the automatic production system is that: the automatic production system includes a shell breaking device: extruding components are arranged to extrude and break walnut shells; a walnut kernel vibrating and grading device: receiving shell-kernel mixture after shell breaking, subjecting the shell-kernel mixture to vibrating and grading, and conveying the graded shell-kernel mixture to each negative pressure shaking and sorting device, respectively; and the negative pressure shaking and sorting devices are connected to a negative pressure separation device, the negative pressure separation device sucks and stores the walnut shells through negative pressure suction force, and the walnut kernels are classified and stored through the negative pressure shaking and sorting devices.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY +1

WIFI device positioning tracking system and method

The invention discloses a WIFI device positioning tracking system used for retail industry. The WIFI device positioning tracking system comprises a database which is used for storing customer information and data analysis information; a server which is connected with the database and multiple relay stations and used for analyzing a WIFI position; the multiple relay stations with WIFI which are connected with each WIFI device within the located area range so that the position is determined; and the multiple WIFI devices with installation of application programs. The invention discloses a positioning tracking method comprising that: (1) each relay station searches the WIFI devices in an administration area; (2) the position and stay time of each WIFI device are sent to the server; and (3) data analysis is performed by the server, and then data are stored in the database. The aforementioned steps are performed in a cycle way. Retail industry customers can be conveniently positioned and tracked so that various valuable data can be analyzed and researched, tracking of the specific customers is realized, exhibition section sales volume classification is realized, the customers are dredged according to customer flow rate, and shopping guidance is realized according to areas.
Owner:HANGZHOU CENTURY TECH +1

Urban intelligent transportation query system based on internet of things

The invention discloses an urban intelligent transportation query system based on the internet of things. The system comprises an intelligent transportation management service center, a group of base stations, a group of intelligent stop board terminals, a group of vehicle-mounted terminals, and a group of handheld terminals. The intelligent transportation management service center is formed by a plurality of data servers and management servers, and a Web server is constructed. The base stations and the intelligent stop board terminals are respectively communicated with the intelligent transportation management service center, the vehicle-mounted terminals are respectively communicated with the base stations and the intelligent stop board terminals, and the handheld terminal are communicated with the intelligent transportation management service center. According to the urban intelligent transportation query system, real-time query can be carried out according to departure places and destinations anytime and anywhere through the portable type handheld terminals, and trip choices are provided by the system according to real-time road condition information and vehicle condition information; and query ahead of schedule can also be carried out, and trip advices are provided by the system according to historical road condition information and vehicle condition information.
Owner:广西农垦昌菱农场有限公司

Public area congestion and stampede emergency early-warning system

The invention provides a public area congestion and stampede emergency early-warning system, which comprises a substation management server, an algorithm server arranged at a police station monitoring center, and a plurality of monitoring terminals, wherein the substation management server and the monitoring terminals are in communication with the algorithm server. The public area congestion and stampede emergency early-warning system provided by the system can count an accurate number of people in a public area according to people flow data detected by the monitoring terminals at entrances and exits or passageways of the public area as well as a people flow density value detected by the monitoring terminals in the public area; in addition, the public area congestion and stampede emergency early-warning system can analyze the counted accurate number of people in the public area in real time, and can notify the police of the substation management server timely when an alarm threshold value set by a user is reached, so as to achieve emergency evacuation and avoid the occurrence of congestion and stampede; and the system can perform overall monitoring on people flow in the public area, counts data about the number of people accurately, avoids the occurrence of congestion, and is high in practicability.
Owner:BEIJING CE VANLINK TECH CO LTD

Application program updating method and terminal equipment

The invention provides an application program updating method and terminal equipment. The application program updating method comprises the following steps: detecting a screen state of the terminal equipment and a wireless network access state of the terminal equipment; if the terminal equipment successfully accesses the wireless network and the screen state of the terminal equipment is a screen locking state, detecting whether the terminal equipment has an application program to be updated or not; if the terminal equipment has the application program to be updated, acquiring updating information of the application program to be updated, and updating the application program to be updated. According to the application program updating method, whether a terminal is used by a user or not is judged by detecting the screen state of the terminal, and the network access state of the terminal is judged by detecting the wireless network access state of the terminal equipment, so that the application program can be updated when the terminal is not used by the user, the situation that the bandwidth is occupied when the application program is updated while the terminal is used by the user can be avoided, and known influence to the user can be reduced to the minimum level in the updating process.
Owner:广东科迅软件技术有限公司

System and method for managing automatic ticketing

The invention relates to a system for managing automatic ticketing. The system comprises a ticketing management and control center module, an information database module and a booking terminal sub system, wherein the ticketing management and control center module is connected with the information database module and the booking terminal sub system respectively. The invention also relates to a method for managing automatic ticketing based on the system. By the system and the method for managing automatic ticketing, the risks in network congestion and system paralysis during ticketing can be avoided, the queuing ticketing mode is kept, and fairness is embodied; due to a mode that a main password and an auxiliary password produce similar real-name ticketing, behaviors of reselling tickets can be prevented effectively; by automatic ticketing of the system, tickets returned by others can be sold immediately, so that effective selling proportion of tickets can be increased, ticketing at any time anywhere can be realized, network flow and system resources are saved, ticketing complexity is reduced and ticketing success rate is increased; furthermore, the working performance is stable and reliable, the applicability range is wide, and a great convenience is provided for working and living of people.
Owner:侯圣勇

Vehicle shunting traffic lights and uses thereof

InactiveCN101231788BAppropriate amount of shuntSafe and smooth traffic effectRoad vehicles traffic controlRemote controlEngineering
The invention discloses a vehicle diverging traffic light and application thereof. The invention belongs to the traffic control field. According to the technical proposal of the invention, a first basic structure of the traffic light consists of a strip-shaped light, an arrowhead light and a dish-shaped light, wherein, four light bodies are manufactured to constitute a main light body for turningaround, turning left, driving straight ahead and turning right. A second basic structure is that the arrowhead light is manufactured into two light bodies for turning left and driving straight ahead.A third basic structure consists of a human-shaped light, a vehicle-shaped light, a left light and a right light, wherein, a walking and pushing vehicle and two front light bodies constitute an auxiliary light body. The lights are controlled by switches and six basic signal sources can be provided, thus forming a whole or separate vehicle diverging traffic light. The application signal of the traffic light can classify, diverge and control vehicles at intersections of urban highway through signals. The vehicles can be forced to diverge at peaks; divergence of vehicles can be controlled in a normal period; the vehicles drive naturally in a depressed period. In addition, the invention provides a novel signal option for intelligent or remote control of divergence and passing of vehicles, thus improving the passing security and capability of road intersections.
Owner:张立胜
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