138results about How to "High acquisition frequency" patented technology

The invention relates to a bionic mechanical eyeball based on a spherical ultrasonic motor. The bionic mechanical eyeball consists of an eyeball, three stator mechanisms and a base plate, wherein a mini-sized CMOS (Complementary Metal Oxide Semiconductor) camera and an attitude sensor are loaded in the eyeball, each stator mechanism consists of a tooth-shaped annular elastomer and a compressing mechanism, and a piezoelectric ceramic piece is attached to the tooth-shaped annular elastomer and the compressing mechanism is used for generating a pressing force; the eyeball is contacted with internal tooth circles of the tooth-shaped annular elastomers of the three stator mechanisms respectively in a tangential manner and is subjected to compressing and centering by each compressing mechanism; and meanwhile, the three stator mechanisms are vertically fixed on the base plate and symmetrically distributed by rotating around a center shaft for 120 degrees, and an included angle between the plane where the eyeball and a contact circle of each stator mechanism are located and the base plate surface is 65 degrees. According to the bionic mechanical eyeball based on the spherical ultrasonic motor, the structure is simple and compact, the response speed is quick, the control precision is high, and the visual angle of the mechanical eyeball reaches 50 degrees; and the bionic mechanical eyeball based on the spherical ultrasonic motor can be applied to various complex visual systems.

The invention relates to a welding process parameter recording and welding quality analysis system which comprises a data acquisition board card, a data analysis processing board card, an external storage module, a communication module and a liquid crystal display module. The data acquisition board card acquires welding related data and conveys the welding related data to the data analysis processing board card to perform data processing and analysis, the analyzed data are displayed through the liquid crystal display module and stored in the external storage module, or the analyzed data is conveyed to an upper personal computer (PC) or an access gateway to be processed uniformly through the communication module. Recording of various parameters, such as current, voltage, welding speed, wire traveling speed, protective gas flow, environment temperature and preheating temperature in a welding process is achieved. Acquisition frequency is high, process analysis of the welding process can be performed, the data can be processed in off-line mode, the data do not need to be conveyed to a PC terminal to be processed, and the data can be processed uniformly through the PC or network. The data can be displayed in real time, and a welding process can be arranged. When top and bottom limitation of a preset alarm is reached, alarm operation is triggered, and welding quality is improved.

The invention discloses an acquisition and processing method for transmitting remote data of industrial equipment, which comprises the following steps: acquiring equipment state data obtained in a current acquisition period according to a preset data acquisition time interval; based on the current reference information, comparing each parameter in the current equipment state data with a corresponding parameter in the reference information, and integrating information of changed parameters to obtain changed parameter data; caching the generated change parameter data in a preset data transmission period comprising a plurality of data acquisition time intervals, and packaging the plurality of change parameter data to obtain corresponding equipment data; and carrying out lossless compression on the equipment data to obtain corresponding equipment transmission data, and sending the data to a server. Differential data transmission and data variable-speed acquisition modes are utilized, dataintegrity transmission is guaranteed, server pressure is reduced, and a multi-data and high-acquisition-frequency acquisition and transmission mode is achieved.

The invention relates to an Internet-of-Things based multiparameter online water quality monitoring system and an implementation method. The monitoring system comprises a plurality of water quality detection gateways, a local server, a cloud server and a smart phone. Each water quality detection gateway is connected with a plurality of bus-type water quality sensing modules and a plurality of wireless water quality sensing modules. Each water quality detection gateway is connected with the local server through the Ethernet, connected with the cloud server through the wireless wide area network, connected with the smart phone through Bluetooth, connected with the bus-type water quality sensing modules through RS485 buses, and connected with the wireless water quality sensing modules throughWSNs (wireless sensor networks). Each of the bus-type water quality sensing modules is connected with a multiparameter water quality sensor, and each of the wireless water quality sensing modules isconnected with the corresponding multiparameter water quality sensor. The water quality detection gateways of the monitoring system are connected with the water quality sensors through the RS485 fieldbuses and the WSNs, data query and system parameter configuration can be performed in multiple ways, and accordingly, the monitoring system is flexible, convenient and rapid to use.

The invention discloses an urban road/ road segment vehicle speed evaluation method based on big data of 3G mobile phone mobile signals. The urban road/ road segment vehicle speed evaluation method comprises the steps of 1, establishing a positioning database, of 2, online positioning user phones, and of 3, calculating an average speed index of vehicle roads/ road segments. According to the urban road/ road segment vehicle speed evaluation method, by processing mobile phone APP heartbeat data and by the combination of data from base stations and road networks, phone positions and vehicle speed data are obtained, and the problems that data sizes in 'switch' events by a traditional positioning method are small, and the positioning precision is low are solved. Further, the urban road/ road segment vehicle speed evaluation method has the advantages of being high in reliability, low in error rate of matching roads, big in data sizes, and the like.

The invention relates to a method and a device for controlling the vibration in an automobile hierarchical modeling manner. The method comprises the following steps: sending the data of eight vertical and lateral road roughness sensors to a CPU processor, integrating the hierarchical modeling algorithm and obtaining the motion state of the centroid of suspended mass, the constrained force of suspended mass, and acceleration predictive values obtained by predicting and decoupling the vertical and lateral acceleration variable quantities of No.1 to No.4 suspension brackets, through the operation; respectively transmitting to eight vertical and lateral matrix control quantity operation module of No.1 to No.4 units; obtaining theoretical quantity of controllable actuators of No.1 to No.4 units after the synthesis is conducted; conducting the conversion operation of actuating quantity because the data received by each actuator generates the corresponding action. The invention has the advantages that the hierarchical control architecture built on the basis of considering the common influence of the vertical excitation and the lateral excitation of the road is converted into eight four-multiplied-four matrix, so as to simultaneously conduct the control quantity operation of four controllable actuators and the vibration control, thereby reducing online operation time and reaching the optimum vibration control effect of the whole automobile.

The invention relates to a velocity field and density field synchronous measurement system and method. The system comprises a visual test pipeline, a laser emission system, a background image target plate, a first CCD camera and a second CCD camera. The method comprises the following steps that fluorescent tracer particles are added into a fluid to be measured, a laser device irradiates laser to the fluid to be measured, and the first CCD camera shoots images of the fluorescent tracer particles at different moments to obtain distribution of a velocity field; and the second CCD camera synchronously shoots a to-be-measured fluid image with the background image target plate as the background when laser irradiates the to-be-measured fluid to obtain distribution of the density field. Synchronous measurement of the velocity field and the density field is achieved.

An embodiment of the invention provides a detection system based on an unmanned aerial vehicle, and belongs to the technical field of automatic driving. The system comprises a vehicle and the unmannedaerial vehicle; the unmanned aerial vehicle collects lower obstacle information; the unmanned aerial vehicle is further configured to determine an azimuth angle of the obstacle relative to the vehicle according to the lower obstacle information; and the unmanned aerial vehicle is further configured to send the azimuth angle to the vehicle for enabling the vehicle to increase a collection frequency of a vehicle-mounted radar corresponding to the azimuth angle to a preset high frequency higher than an initial preset frequency according to the azimuth angle, and meanwhile, identify a vehicle shot image which is currently shot by a vehicle-mounted camera and corresponds to the azimuth angle in preference to other vehicle shot images, so that the obstacle which is shielded or relatively remoteis detected by the unmanned aerial vehicle in advance, and the vehicle is controlled to take corresponding measures in advance. The vehicle can selectively perform key monitoring on the azimuth angleof the obstacle, so that the possibility of collision is reduced, and the safety of the vehicle is improved.

The invention discloses a screw-type piezoelectric type energy collector and a preparation method thereof. The collector comprises a piezoelectric thin film, a metal electrode, an adhesive layer, metal mass blocks and silicon mass blocks. The screw-type piezoelectric type energy collector provided by the invention has the characteristics of low frequency and wide frequency band; the preparation method for the screw-type piezoelectric type energy collector is compatible with the conventional MEMS (micro-electro-mechanical system) technology, and batch production is facilitated.

The invention discloses a wireless energy supply video image capsule system in the technical field of medical equipment. The wireless energy supply video image capsule system comprises a capsule system, an in vitro wireless energy supply device and an in vitro image processing device, wherein the capsule system is positioned in an alimentary canal and acquires environmental information of the alimentary canal; the in vitro image processing device and the capsule system are connected in a wireless mode, transmit capsule video information and output the information in a graphic mode; and the in vitro wireless energy supply device provides energy for the capsule system in an alternating magnetic field mode. By the wireless energy supply video image capsule system, an in vitro operating controller actively controls the posture and position of the capsule system.

The invention discloses a double-core high-speed four-wheeled picomouse full digital navigation servo controller, comprising a mainboard, and a cell, a first sensor S1, a second sensor S2, a third sensor S5, a fourth sensor S6, a first motor X, a second motor Y, a third motor R, a fourth motor Z, a fifth motor M, a three-axis gyroscope G1, a three-axis accelerometer A1, a vacuum device, etc. which are all arranged on the mainboard. By employing the structure of the invention, the controller obtains an increased operation speed, and can monitor and calculates running states of a picomouse in real time; through four sensors, interferences can be reduced, and meanwhile peripheral environments can be accurately monitored; besides, the controller can correct motion postures according to running states, redistribute torques, and distribute more torques to nonstall driving wheels so as to get a system out of an unstable state rapidly, automatically regulate the ground absorption capability of the vacuum device, and completely eliminate the skidding of the picomouse in complex labyrinth navigation.

The invention provides an apparatus and method for monitoring the carbon dioxide flux of soil in the aeration zone of a gas injection oil displacing oil well. The apparatus comprises following serially connected components: a gas collection column, a gas parameter monitoring instrument, a gas collection pump, and an infrared gas analyzer, which is electrically connected to a data transmission module. A temperature sensor, a soil water sensor and a pressure balancing valve are arranged in the gas collection column. The gas collection column collects sample gas and reference air. By setting airreference measurement and the pressure balancing valve, continuous background correction and dynamic air pressure balance of soil gas are realized; the influence of air pressure turbulence during thelong period of continuous CO2 sampling process is eliminated; and the soil gas temperature, water content of soil, air background temperature, and air pressure are measured in real time so as to remove the interference of environmental factors on the CO2 flux measurement accuracy. Compared with a conventional measuring method, the provided method has the advantages of high monitoring accuracy, little environmental background interference, and large change range of monitoring depth.

The embodiment of the invention provides an electronic map parking lot updating method, device and equipment. The method comprises the following steps of acquiring a roadside image acquired by vehicle-mounted image acquisition equipment and corresponding position information; matching the roadside image with a pre-stored roadside parking lot image; sending the position information to a map serviceprocessing server to judge whether the roadside image is a roadside parking lot or not, and if the roadside image is the roadside parking lot, sending the position information to the map service processing server to enable the map service processing server to update the electronic map parking lot information according to the position information; matching the roadside image acquired by the vehicle-mounted image acquisition equipment with the pre-stored roadside parking lot image to judge whether the roadside image is the roadside parking lot or not, so that the acquisition and updating frequency of the roadside parking lot information can be improved, and a user can timely inquire the most comprehensive roadside parking lot information in an electronic map.

The invention discloses a wheelchair with an object-taking function and a control method thereof. The wheelchair includes an electric wheelchair, a humanoid robotic arm and a wheelchair control system, and the wheelchair control system includes an eye tracker, a microcomputer, a camera, and a microphone. The method for controlling the object taking includes the steps of: 1. the disabled person sits in the electric wheelchair and wears the eye tracker; 2. the disabled person firstly speaks to the microphone to tell what item he wants to take, and then looks at the position where the wheelchairis to arrive; 3. the wheelchair control system controls the position of an eye gaze point that the electric wheelchair needs to reach from the current position to the wheelchair; 4, the item that thedisabled person wants to take is obtained, and the center coordinate of the target information is determined; and 5. the wheelchair control system controls the humanoid robotic arm to reach the position of the item and take the object. The wheelchair has novel and reasonable design and high control precision, so that the electric wheelchair and the humanoid robotic arm can automatically assist thedisabled person to take things, which greatly facilitates the life of the disabled person and has strong practicability.

The invention provides a method and system for SA-based ground fissure monitoring. The method comprises: a first array displacement sensor is buried in a direction parallel to a ground surface and a second array displacement sensor is buried in a direction perpendicular to the ground surface, and the first array displacement sensor and the second array displacement sensor penetrate an upper disc and a lower disc of a to-be-monitored ground fissure respectively; a three-dimensional coordinate system is established, wherein the X axis of the three-dimensional coordinate system is parallel to theextending direction of the to-be-monitored ground fissure, the Y axis of the three-dimensional coordinate system is perpendicular to the extending direction of the to-be-monitored ground fissure, andthe Z axis of the three-dimensional coordinate system is perpendicular to the ground surface; and statistics of average displacement amounts of nodes in the first array displacement sensor and the second array displacement sensor in an X-axis direction, a Y-axis direction, and a Z-axis direction is carried out within a preset monitoring period and thus a first statistical result is obtained, anda periodic variation law of the to-be-monitored ground fissure is determined based on the first statistical result. Therefore, the measurement range can be expanded to a certain extent and the accuracy of the ground fissure monitoring result is improved.

The invention discloses a dual-core medium-speed six-wheel little mouse exploration controller comprising a sensor device, an auxiliary navigation device, a vacuum suction device and a control unit module. Every two of the six wheels of the little mouse are paired and respectively arranged at the head part, the middle part and the tail part. The auxiliary navigation device comprises a direction sensor D1, a gyroscope G1 and an accelerometer A1. The sensor device and the gyroscope device are respectively connected with the control unit module in a signaling way. The control unit module is respectively connected with motors X, Y, Z, U, R and M in the signaling way. The phenomenon of slipping of the little mouse in exploration can be solved by the vacuum suction device arranged below the chassis. Meanwhile, servo control of the vacuum suction DC motor M can be automatically adjusted according to advancing speed of the little mouse and the ground conditions so that the little mouse is enabled not to be limited by the ground conditions of a maze.

The invention discloses an electrically propelled wheelchair control system and method based on visual tracking. The system comprises a processor and an eye tracker, wherein the eye tracker is connected with the processor; an output end of the processor is connected with a motor driver, and a motor of an electrically propelled wheelchair is connected with the output end of the motor driver. The method comprises the following steps of 1, collection and transmission of eye movement images; 2, processing of the eye movement images; 3, route planning; 4, moving of the electrically propelled wheelchair. The design is novel and reasonable, the functions are perfect, the computing speed is high, the identification precision is high, fewer associated devices are needed, the control system and method are not limited by time, space, outer environments and the like, the operation burden of an electrically propelled wheelchair operator can be reduced, malfunction can be avoided, the practicabilityis high, the using effect is good, and application and popularization are facilitated.

The invention provides a method for acquiring and processing remote control information of unmanned aerial vehicle steering engines based on an FPGA. The method provides an FPGA module which comprises a rising edge and falling edge signal acquisition circuit and a filter algorithm signal processing circuit; the method specifically comprises the following steps: each steering engine of the unmanned aerial vehicle is connected to a steering engine driver, each steering engine driver is connected with the FPGA module, the rising edge and falling edge signal acquisition circuit acquires a signal transmitted by a remote control receiver, and the filter algorithm signal processing circuit is used for performing filtering processing on the acquired remote control steering quantity control information to obtain stable remote control steering quantity control information, and sending the information to the flight control unit of the unmanned aerial vehicle by use of a bus. The method is capable of effectively increasing the acquisition frequency of the control signals of multiple steering engines, greatly increasing the response speed and updating the control steering quantity in real time, thereby improving the flight stability of the unmanned aerial vehicle.