5results about How to "Easy to deploy at scale" patented technology

The invention discloses a broadband three-dimensional forming beam coverage design method based on a quasi-static intelligent reflecting surface, and relates to the technical field of wireless communication. The low cost, low complexity and flexibility of the quasi-static intelligent reflecting surface are utilized to increase the adjustability which the static reflecting array does not have; according to the method, the target area angle range information of beam coverage is obtained, the beam coverage design is completed offline by using the alternating iterative optimization algorithm based on DC-SCA, real-time channel estimation is not needed, and the system overhead and the calculation complexity are reduced. And in combination with an IRS unit radiation pattern, forming beam coverage of differentiated gain requirements of a target area and balance of gains at different sub-band frequency points in a broadband communication scene are realized. In consideration of requirements of working frequency points, working bandwidth, quantization bits and the like, manual splicing is carried out by designing a proper QS-IRS unit pattern, and a large-scale reflection array is formed. The problems existing in the traditional communication technology are solved, actual factors are considered, and the method has important practical significance and application value.

The application discloses an environmental protection anti-radiation bionic fish robot based on ESP32, which comprises a water main control end and an underwater bionic fish robot monitoring end. The underwater monitoring end adopts a bionic fish robot body, which is internally provided with an ESP32 chip and an expansion board. The ESP32 is electrically connected with a visual identification module, a water quality sensor, a nuclear radiation sensor, an ASR voice recognition module + a loudspeaker, a relay, a night light supplementing lamp, a three-color LED module and a buzzer. The relay is connected with a 4G communication module. The application integrates visual identification, water quality and nuclear radiation monitoring, voice interaction and remote communication functions, can actively identify marine pollution and fallen personnel, and voice interacts with the person in distress. When an abnormality is detected or a help-seeking instruction is received, the position and alarm information are reported through 4G. The robot adopts a bionic fish shape, has high maneuverability and low cost, realizes the integration of pollution monitoring and rescue assistance, and fills the gap of nuclear radiation mobile monitoring and intelligent rescue assistance.

This invention discloses a method, system, and medium for human fall detection based on multi-view geometry. The method includes: acquiring intrinsic and extrinsic parameters of multiple fixed cameras and a ground homography matrix; simultaneously acquiring images and obtaining a binary mask of the human body with global identifiers; determining radial lines based on the nadir points of each camera, adaptively selecting the optimal viewing angle camera, extracting foot and head image points, and calculating the horizontal position and vertical height using the homography matrix and geometric relationships; using multi-view ground homography constraints, mapping mask pixels in a reference view to other views for consistency verification, backprojecting verified pixels onto the ground plane to reconstruct the contact area and calculate the area; and fusing at least the temporal changes in height and contact area to determine whether a fall has occurred. This invention can accurately measure key physical quantities related to falls and has advantages such as strong robustness, high accuracy, good interpretability, and controllable hardware costs.

The application relates to the technical field of intelligent power distribution and electrical control, in particular to a circuit breaker address automatic allocation device and method based on voltage detection. The device comprises an internal pull-up resistor, a voltage detection point, a connection terminal and a micro control unit, a unique resistance coding resistor is arranged at a corresponding position of an external mounting base, and the two constitute a voltage division circuit. The method is characterized in that, through power-on initialization and multiple voltage sampling and filtering, characteristic quantities are calculated based on voltage division, a unique address is matched in combination with a pre-stored mapping table, and after conflict detection, the address is stored and registered. The application adopts passive resistance voltage division and voltage bit characteristic quantity design, cooperates with an anti-interference mechanism, offsets the influence of resistance tolerance and power supply fluctuation, does not need manual operation and complex modules, supports hot plug, has simple structure, low cost, fast and accurate address allocation, is suitable for multi-scale power distribution scenes, has strong stability, and is convenient for batch deployment.

The present invention discloses a low-cost liquid pH detection system. The system includes a sensor tag, a reference tag and a detection system; the detection system includes a signal transceiver subsystem for sending a continuous wave signal to activate the tag, and sending a query signal to establish communication with the tag, and collecting the reflected signal of the tag; a differential sensing subsystem for separating the reflected signal, removing the signal interference in the reflected signal, and performing signal differentiation on the reflected signal after eliminating the interference to obtain the differential amplitude and phase of the sensor tag and the reference tag; a liquid pH detection subsystem for extracting the features of the amplitude and phase from the differential amplitude and phase using a machine learning method, and determining the pH value of the liquid to be detected according to the mapping relationship between the liquid pH and the features of the amplitude and phase. The solution provided by the present invention is simple in composition, low in equipment cost, and easy to deploy on a large scale. The system has low operating difficulty and high detection accuracy, and can achieve low-cost, fast and efficient liquid pH detection.