30results about How to "Simple working mode" patented technology

The invention discloses an estimation method for a high-canopy-density forest stand volume based on a photographic image pair of an unmanned aerial vehicle. According to the invention, a small lithium-battery unmanned aerial vehicle is used as a flight control platform and carries an ordinary non-metric fixed-focus digital camera, so a photogrammetric measurement system is composed. According to different textural feature information of tree crowns, aerial photographs are automatically judged, read, analyzed and interpreted by combined usage of a computer vision technology and an image recognition technology; therefore, stand description factors like average tree height h, average diameter D, tree density N, canopy degree K1, mingling degree K2, age class A and locality class S are obtained, and the forest stand volume M is calculated via a model.

This invention discloses one ion source real-time control system and its control method, wherein, the system comprises three parts of feedback signal generation and transmission part, signal process and control part and transmission control and execution part, wherein, the ion saturation sensor is extended into ion source with control gas valve fixed by side of ion source; according the ion saturation flow signal and gas in volume of ion source to recede difference value to control gas valve ends voltages to make the arc flow near parameter values.

The invention discloses an auxiliary device for improving the stability and safety of a lithium metal battery based on an external ultrasonic field, including a battery charging box, a battery charging and discharging management system, a controller, an ultrasonic excitation signal transmitter, and an ultrasonic transducer device. The battery charging box is A closed box structure, the battery charging box is filled with coolant and has a notch for accommodating lithium metal batteries; the battery charge and discharge management system is used to connect with the lithium metal battery in the notch; the controller The ultrasonic excitation signal transmitter is connected to the ultrasonic transducer device, and the ultrasonic transducer device is used to apply ultrasonic longitudinal waves to multiple outer surfaces of the lithium metal battery when the lithium metal battery is charged. The invention uses ultrasound to improve the diffusion rate of lithium ions in the electrolyte, thereby achieving the purpose of assisting in improving the stability and safety of the lithium metal battery. Different from the current traditional improvement strategies, the present invention has simple working mode, low cost, strong practicability and obvious improvement effect.

The invention discloses a non-resonant piezoelectric linear motor driven by symmetrical bipeds, which comprises a stator and its casing, a mover guide rail, a guide adjustment mechanism, a pre-pressure device and a base; the stator is fixedly connected in the casing to form a whole , the front end of the shell is provided with a mover guide rail, the rear end is connected to the pressure device, and the left and right ends are respectively connected to the guide adjustment mechanism; the pressure device is equipped with a pre-compressed spring, and the shell is under the action of the restoring force generated by the deformation of the pre-compressed spring. The mover guide rails keep in contact; the mover guide rails, pre-pressure device and guide adjustment mechanism are all installed on the base; the stator structure consists of a stator support plate and two symmetrically distributed driving feet, laminated piezoelectric ceramics, pads, and long hinges , Composed of pre-tightening screws. The symmetrical motor has a simple structure and is easy to install, effectively ensuring the consistency of bidirectional actuation performance of the piezoelectric motor. Applying certain electrical signals to the four groups of laminated piezoelectric ceramics respectively can realize the bidirectional linear motion of the piezoelectric motor.

The invention provides a method and system for opening a door by scanning a code, a smart cabinet and a terminal. The method for opening the door by scanning the code is used for the smart cabinet andcomprises the steps of S102, detecting the type of the two-dimensional code or the barcode scanned by a scanner and a cabinet number corresponding to the code; S104, judging whether or not the two-dimensional code or the barcode belongs to item storage codes in type, and if yes, executing S106; S106, sending out a door opening signal to open the cabinet door corresponding to the cabinet number, and executing S108; S108, judging whether or not the cabinet door is opened, if yes, executing S110, and if not, executing S112; S110, uploading item storage information to a server so that the servercan push the item storage information to the user terminal; S112, uploading fault information to the server, redistributing the cabinet door, and executing S108. By means of the method for opening thedoor by scanning the code, the scanner is applied to multiple links, and the hardware utilization efficiency and the user experience are improved.

The invention discloses a double-foot driving piezoelectric linear motor and an electric excitation mode. The motor is composed of two stator sets, a rotor / linear guide rail, a pre-pressing guide rail, a pre-pressing spring and a base. The two stator sets are distributed symmetrically along axes, and the ends of the two stator sets are fixedly connected with the pre-pressing guide rail. Under the action of elastic restoring force generated by elastic deformation of the pre-pressing spring, the two stator sets keep in contact with the rotor / linear guide rail, so that an outage self-locking function is provided for the piezoelectric linear motor. Each of the two stator sets is composed of piezoelectric actuation units, flexible connectors and a driving foot, wherein two ends of the piezoelectric actuation units are connected with the driving feet and the base through the flexible connectors. The piezoelectric actuation units serve as modular structures, so that the whole motor structure is simple, the motor assembly efficiency is improved, and batch production is facilitated. According to the double-foot driving piezoelectric linear motor and the electric excitation mode, the rotor / linear guide rail can be driven by the two stator sets alternately to perform rectilinear motion by imposing specific excitation voltage signals on laminated piezoelectric ceramic sets in the piezoelectric actuation units.

The invention relates to a disc material double-machine collaboration automatic storage system. The system comprises a base; a horizontal guide rail is arranged on the base; and shelves are arranged on the base on two sides of the horizontal guide rail. The system is characterized in that the horizontal guide rail is longitudinally provided with an automatic feeder and a storage roadway machine in sequence; and the automatic feeder and the storage roadway machine both can move in the longitudinal direction of the horizontal guide rail. An electric control cabinet is arranged on the base; and the automatic feeder and the storage roadway machine are both connected with the electric control cabinet through wire or wireless signal transmission. A conveying belt is arranged on the base on one side of the horizontal guide rail; and the longitudinal center line of the conveying belt is parallel to the horizontal guide rail. The automatic storage system integrates a feeding device with a storage device, uses one electric control cabinet for collaborative control to full-automatically perform the warehousing operation of disc materials in sequence, is simple and fast in mode, nearly needs no manual operation, and can realize smooth gapless butt joint with a production line.

The invention discloses a threshold adaptation energy detection method. In the energy detection method, a parameter computing scheme for an offline energy judgment threshold decision function and an online energy judgment threshold judgment scheme are sequentially realized. In the threshold adaptation energy detection method provided by the invention, the energy judgment threshold decision function is offline established, a value of an energy judgment threshold is dynamically regulated according to different signal to noise ratios, and online judgment is performed, so the intellectualization level of a cognitive radio user is improved, false alarm probability Pf(xi) is decreased to maximize the average data transmission rate of a secondary user (SU), energy overhead required in a running process is decreased, and an average value of false dismissal probability Pm(xi) is limited within a preset probability threshold range to avoid excessive interference in a primary user (PU).