Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

85results about How to "Quick and accurate response" patented technology

Medical type all-solid potassium ion selectivity sensor and preparation method thereof

The invention discloses a medical type all-solid potassium ion selectivity sensor and a preparation method thereof. The medical type all-solid potassium ion selectivity sensor comprises a substrate, two potassium ion selectivity working electrodes which are completely the same in structure and arranged side by side, an insulating layer and a salt bridge. Without a constant-potential reference electrode in the conventional sense, one of the two potassium ion selectivity working electrodes is used to be matched with a potassium standard solution to realize the function of a reference electrode, the complexity in preparation of the whole sensor is greatly reduced. Each of the two same potassium ion selectivity working electrodes comprises a conductive layer, a reaction electrode, a contact electrode and a potassium ion sensitive film. According to the invention, since the constant-potential traditional reference electrode and the electrolyte layer of a common solid-state electrode are not needed, the preparation process and flow of the all-solid potassium ion selectivity sensor are greatly simplified; and moreover, the all-solid potassium ion selectivity sensor has accurate and quick response, and is small and light, convenient to carry and suitable for large-scale production.
Owner:NANJING UNIV OF TECH

Sewage pumping station dynamic control method and system

The invention relates to the field of sewage treatment system control, and discloses a sewage pumping station dynamic control method and system. The dynamic control method comprises the steps of dividing a water level of an upstream pipe network into multiple sections of consecutive water level ranges, wherein each section of water level range is provided with corresponding target flows, and each target flow is provided with a corresponding water pump group; obtaining the upstream pipe network real-time water level so that a corresponding pump group scheme can be obtained; comparing a water collection pond water level with a target water level, or comparing pump station real-time delivery flow with the target flow, and adjusting a variable frequency pump according to a comparison result to achieve steady state control of the water level of the flow of the water collection pond, wherein the water level range comprises an ascending water level range and an descending water level range which are arranged in a staggered mode. According to the provided sewage pump station dynamic control method and system, based on a PLC control system, the stability of system control and the operation efficiency of a water pump can be improved, and the service life of a pump set can be prolonged, so that the system control long-term operation stability is high, and the sewage pumping station dynamic control system is easy to install and repair.
Owner:TSINGHUA UNIV

Method for controlling speed of electric car

The invention relates to a method for controlling the speed of an electric car. The method comprises the following steps: (1) inputting an actual speed signal detected by a Hall type wheel speed signal sensor into a completed car controller, and judging whether to start the speed closed-loop control or not through a control chip; (2) selecting a driving mode on a driving mode selecting module by a driver according to a present road condition, and at the same time, stepping an electronic type accelerator pedal to one position for the driver; (3) inputting a driving mode signal, an accelerator pedal position signal and the actual speed signal into the completed car controller through corresponding channels; (4) filtering the input accelerator pedal position signal by using a low pass filter; (5) calculating the processed accelerator pedal position signal and the processed actual speed signal through a PID controller to obtain a drive motor torque command, and inputting the drive motor torque command to a drive motor controller through a CAN communication channel; and (6) controlling a drive motor to act by the drive motor controller according to the drive motor command. The method disclosed by the invention can be widely applied to the speed control of various electric cars.
Owner:TSINGHUA UNIV +1

Human body unbalance detection method and device, and fall prevention device and method

ActiveCN105816180AImmediate Imbalance JudgmentSimple and fast imbalance judgmentDiagnostic signal processingSensorsEngineeringGravity center
The invention provides a human body unbalance detection method and device, and a fall prevention device and method. The human body unbalance detection method comprises a gravity center acceleration sensor, a left foot acceleration sensor, a right foot acceleration sensor and a main control unit, wherein the gravity center acceleration sensor detects the longitudinal acceleration, lateral acceleration and vertical acceleration of a body weight center when a human body walks; the left foot acceleration sensor detects the longitudinal acceleration and lateral acceleration of a left foot when the human body walks; the right foot acceleration sensor detects the longitudinal acceleration and lateral acceleration of the right foot when the human body walks; the main control unit judges whether the human body is unbalanced through the deviation between the detected longitudinal accelerations and lateral accelerations of the left and right feet and the longitudinal acceleration and lateral acceleration of the body weight center or the deviation between the detected lateral displacements and longitudinal displacements of the left and right feet and the lateral displacement and longitudinal displacement of the body weight center when the vertical acceleration of the body weight center is smaller than a vertical acceleration threshold value of the gravity center or the vertical displacement of the gravity center is smaller than the vertical displacement threshold value of the gravity center, and outputting alarm signals if the human body is unbalanced.
Owner:施则威

Human-computer interaction method based on classroom auxiliary teaching intelligent system

The invention belongs to the technical field of teaching equipment, and relates to a human-computer interaction method based on a classroom auxiliary teaching intelligent system. The human-computer interaction method comprises the following steps: 1) establishing an information database for teacher face images, teacher gesture recognition and teacher motion tracking; 2) performing image acquisition on the teacher's face to obtain a teacher's face image; 3) checking and analyzing the teacher face image acquired in the step 2) and the teacher face image in the database in the step 1) to determine the teacher identity; if the checking is successful, executing the step 4); if the check fails, performing exiting; 4) after the identity is successfully checked, performing a classroom teaching process through man-machine interaction, and projecting and displaying man-machine interaction information, wherein the man-machine interaction comprises teacher gesture recognition man-machine interaction and teacher motion tracking man-machine interaction. The multimedia courseware is controlled through gestures or limb actions, the method is convenient to use and capable of remarkably improving the classroom interaction effect.
Owner:SHAANXI INST OF INT TRADE & COMMERCE

Front-train identification method based on train-train communication

InactiveCN108216304AImprove the delay problemWeaken the function of ground equipmentSignalling indicators on vehicleElectronic mapManagement unit
The invention provides a front-train identification method based on train-train communication. The method includes the steps that when a train gets in a station, or is driven in an interval, a train-mounted management unit of the train receives and stores all train operation information tables sent by a ground management unit; through the train-mounted management unit of the train, distance valuesbetween the train and all trains in the train information tables are computed through an electronic map according to route information of the vehicle, and a front train of the train is determined according to the distance values between the train and all the trains in the train information tables. According to the front-train identification method based on train-train communication, limitation that a traditional train control system collectively controls driving through ground equipment can be broken through, the front train is automatically identified through the train, a driving end point is determined, driving permission information is more accurately and dynamically updated, and the delay problem of an existing system is solved; various emergencies and various scenes of the driving process can be more rapidly and accurately responded, and safe and efficient driving is guaranteed.
Owner:BEIJING JIAOTONG UNIV

Self-adaptive vision-aided driving device

The invention discloses a self-adaptive vision-aided driving device and relates to aided driving of vehicles. The self-adaptive vision-aided driving device is provided with a vehicle-mounted power supply, a voltage-reducing and voltage-stabilizing circuit, a vehicle-mounted display panel, an FPGA (Field Programmable Gate Array) core board, a digital camera and a steering control interface, wherein the FPGA core board is provided with a power module, a crystal oscillator, an FPGA chip and an input/output interface, the input end of the voltage-reducing and voltage-stabilizing circuit is connected with the output end of the vehicle-mounted power supply, the output end of the voltage-reducing and voltage-stabilizing circuit is respectively connected with the input end of the power module of the FPGA core board and the input end of the digital camera, an output interface of the FPGA core board is connected with the input end of the vehicle-mounted display panel, the output end of the digital camera is connected with an input interface of the FPGA core board, the output end of the digital camera is connected with the input interface of the FPGA core board, and the output end of the steering control interface is connected with the input interface of the FPGA core board.
Owner:XIAMEN UNIV

Double-color infrared thermometer applied to testing of cutting temperature of machine tool

The invention provides a double-color infrared thermometer applied to testing of cutting temperature of a machine tool. The double-color infrared thermometer comprises a shell, a laser sighting device, a focusing cylinder, a convex lens, a beam splitter, optical filters, infrared detectors, a processor and a display; the shell has a structure of a three-way pipe; the laser sighting device is arranged on the shell and is positioned below the focusing cylinder; the focusing cylinder is arranged in one of two straight ports in the shell; the convex lens is arranged in the focusing cylinder; the beam splitter is arranged in the shell and an included angle of 45 degrees is formed between the beam splitter and the convex lens; the optical filters are arranged in other two openings of the shell; the infrared detectors are arranged outside the optical filters; the distances between the optical filters of the two openings of the shell and the infrared detectors are equal; meanwhile, the distances between two optical filters and the geometric center of the beam splitter are equal; and two infrared detectors are connected with the processor and the display is connected with the processor. The double-color infrared thermometer is high in measurement efficiency, high in safety performance and low in power consumption, has a simple structure and can continuously test temperature and store and export data.
Owner:SHANDONG UNIV

Two-channel Gray code magnetic coding device

The invention discloses a two-channel Gray code magnetic coding device which comprises a collecting device I, a collecting device II and a power supply, wherein the collecting device I comprises a magnetically sensitive element I and a microprocessor I, and the collecting device II comprises a magnetically sensitive element II and a microprocessor II; the magnetically sensitive element I is connected with the microprocessor I, and the microprocessor I receives magnetic field variation sensing signals collected by the magnetically sensitive element I; the magnetically sensitive element II is connected with the microprocessor II, and the microprocessor II receives magnetic field variation sensing signals collected by the magnetically sensitive element II; and the power supply supplies electric energy for the magnetically sensitive elements and the microprocessors. By using the technical scheme of the invention, the magnetically sensitive elements and the microprocessors are used for processing detection signals to form two-channel coding data with extremely small repetition and error rate, interference between a completely independent two-channel data processing system and a power supply system can be avoid effectively, the stability of detection is increased, and the technical problem of large size of an optical coder is solved.
Owner:株洲威森机车配件有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products