264results about How to "Reduce hardware costs" patented technology

The invention is suitable for the technical field of vehicle dynamics modeling and control, and provides a preview active suspension stiffness control method based on road surface grading and MAP mapping, and the method comprises the steps: collecting a road image through a vehicle-mounted visual sensor, dividing regions, and recognizing the road surface unevenness grade of each region through a convolutional neural network; obtaining the vehicle speed; and according to the current pavement grade and the vehicle speed, a vehicle speed-pavement grade-rigidity mapping MAP table generated in advance is inquired, and the target suspension rigidity is rapidly obtained and adjusted. According to the invention, the dependence on a high-precision sensor and a high-computing-power processor is reduced, and low-cost and fast-response rigidity optimization control of the preview active suspension is realized.

The invention provides a leaky-wave antenna and a frequency-modulated continuous wave generation method based on the leaky-wave antenna, and relates to the field of millimeter-wave radar, and the method comprises the steps: constructing a space-time coding matrix, configuring a radiation unit state regulation and control beam direction in a space domain, modulating a radiation unit state switching rule in a time domain to generate a frequency-modulated continuous wave, and achieving space-time dual-domain regulation and control. And frequency-modulated continuous waves with controllable bandwidth are generated. The space-time coding leaky-wave antenna is formed by alternately arranging 1-bit radiation units in an upper row and a lower row, switching of radiation / non-radiation states is achieved by loading a synchronous bias PIN diode across an annular gap, a space-time coding matrix is constructed, the states of the radiation units are configured in a space domain to regulate and control the wave beam direction, and the space-time coding leaky-wave antenna is formed. Modulating the switching rule of the radiation unit in a time domain, and generating a frequency-modulated continuous wave; the radiation efficiency is improved by the alternative arrangement of the radiation units, the control difficulty and the hardware cost are reduced, multiple functions are integrated into a single device, and the problem of low integration level of the traditional separation architecture is solved.

The invention relates to an SPD hub chip testing method and device, equipment and a storage medium. The method comprises the steps that if it is determined that a to-be-tested SPD hub chip is placed in a replaceable limiting frame of a test seat and communication connection is established with an upper computer, target environment parameters are set, the to-be-tested SPD hub chip is initialized, the upper computer is in communication connection with the test seat, preset test data are written into an EEPROM of the SPD hub chip based on the target environment parameters, then read-back comparison is carried out, and the to-be-tested SPD hub chip is initialized; the static verification data is used for judging the static storage reliability of the to-be-tested SPD hub chip in the current environment, executing continuous read-write operation on the to-be-tested SPD hub chip to obtain a dynamic pressure test data set, and generating a test result of the to-be-tested SPD hub chip based on the static verification data and the dynamic pressure test data set.

The embodiment of the invention provides a multi-channel transcranial focused ultrasound regulation and control system and method based on high-frequency precise-control SPWM (Sinusoidal Pulse Width Modulation). The system is applied to the technical field of ultrasonic treatment and comprises a main control module, an ultrasonic driving module, a frequency tracking module, a power supply module and an ultrasonic transducer, the master control module is used for SPWM signal generation, driving strategy switching and frequency tracking algorithm deployment. The ultrasonic driving module is used for receiving the SPWM signal output by the main control module, amplifying and filtering the SPWM signal and then outputting a target sine driving signal to the ultrasonic transducer; and the frequency tracking module is used for realizing real-time detection and tracking of the actual resonant frequency of the transducer. According to the invention, the hardware cost of multi-channel driving is reduced; the total harmonic distortion of the driving signal is reduced, and the frequency and phase control precision is improved; multi-channel driving is realized through a single MCU, and cortical and deep brain region regulation and control are compatible; the stability of the treatment process is guaranteed while the energy utilization efficiency is improved.

The application provides a low-cost two-wire serial communication method for multi-device competition, which adopts two signal lines to realize bus arbitration and data transmission among multi-devices, wherein any signal line is used as a chip selection line, another signal line is used as a bidirectional data line, chip selection pins of all devices are configured as open-drain output, the chip selection line is connected to a positive electrode of a power supply through an external pull-up resistor, and a high level in a normal state represents a bus idle; when multiple devices share the same bus, distributed arbitration is realized through the following steps: a device continuously monitors a state of the chip selection line before sending data; if the state of the chip selection line is a high level, the device pulls down the chip selection line to attempt to obtain control right of the bus; if the state of the chip selection line is a low level, the device waits until the chip selection line is released; the device obtaining the sending permission sends data with a self-defined frame structure through the bidirectional data line; after the sending is completed, the device obtaining the sending permission releases the chip selection line.

The embodiment of the invention provides a photovoltaic charging control method and device, a storage medium and a charging system. The method is used for controlling a charging system, and the charging system comprises a PV panel, a PV boost converter and a battery system. The method comprises the steps that before a charging system is started, a first switching tube and a third switching tube are closed, and if it is judged that the short-circuit current of a PV panel is larger than a set current threshold value, the PV panel is controlled to be connected to and activate a battery system; when the charging system enters the working stage, acquiring the voltage of the PV panel and the power supply current of the battery system; power supply current and PV panel voltage are calculated through an improved MPPT algorithm, voltage single-loop given voltage is generated, and the improved MPPT algorithm starts to search the maximum power point when the PV panel voltage is zero; calculating the given voltage of the voltage single loop and the voltage of the PV panel based on a proportional-integral algorithm, and generating switch-on time of a switch tube; and the second switch tube and the third switch tube are controlled according to the switch tube conduction time, so that the hardware cost and the control cost of the charging system are reduced.

The utility model relates to the technical field of battery testing, in particular to a battery cell testing device. The cell testing device comprises a plurality of testing boxes, a temperature control assembly and a monitoring assembly, the testing boxes are provided with testing cavities for testing cells, the testing assemblies are arranged in the testing boxes, and the number of the testing boxes is multiple; the temperature control assembly comprises a compressor, a plurality of first loops and a plurality of first heat exchangers, the first loops are in one-to-one correspondence with the test cavities, each first loop is connected with the compressor and at least one first heat exchanger, and each test cavity is matched with at least one first heat exchanger; the monitoring assembly comprises a controller and a first monitor, the controller is electrically connected with the first monitor, the compressor and the first heat exchanger, each test cavity is provided with the first monitor, and the first monitor can monitor the temperature in the test cavity. The compressor is connected with the plurality of first heat exchangers, so that the number of the compressors in the battery cell testing device is reduced, the size of the whole battery cell testing device is reduced, and the manufacturing cost and the energy consumption of the battery cell testing device are reduced.

The invention provides a distance measurement method in a calibration process of a laser vision system, which belongs to the field of distance measurement, and comprises the following steps: shooting a positioning plate image with a laser point through a camera, and arranging a plurality of positioning identifiers with known world coordinates on the positioning plate; identifying a positioning identifier in the image, and acquiring a pixel coordinate of the positioning identifier; calculating a three-dimensional coordinate of the positioning identifier in a camera coordinate system; fitting a plane equation of the positioning plate in a camera coordinate system; pixel coordinates of laser points in the image are detected and extracted; converting the pixel coordinate of the laser point into a space ray equation in a camera coordinate system, and calculating an intersection point of the space ray and the plane equation to obtain a three-dimensional coordinate of the laser point in the camera coordinate system; calculating the distance from the laser point to the optical center of the camera. According to the method, all calculations are carried out in a unified camera coordinate system, alignment errors caused by non-unified coordinate systems of multiple devices are thoroughly eliminated, and the consistency of distance measurement and the overall calibration precision are improved.

The application discloses an alternating-current excitation device charging and discharging system and method for variable-speed pumped storage units and a medium. The system is provided with a charging and discharging circuit, so that the alternating-current excitation device only needs one charging and discharging circuit to realize the orderly charging and discharging operation of each power submodule, realizes the smooth starting and shutdown of the alternating-current excitation device, and reduces the hardware cost compared with the existing hardware scheme, reduces the volume of the excitation device, and effectively improves the economy, safety and stability of the system.

The utility model relates to mahjong machine field discloses push and lift tile device and automatic mahjong machine, including frame, install the tile board that lifts, driver and the carousel with the push tile head on the frame, and driver drives the swing of lift tile board and drives carousel rotation push tile, still install the sliding block and the swing bar on the frame, the cam is installed to the one end of sliding block, and driver drives the rotation of cam through gear transmission, and the cam drives the linear motion of sliding block on the frame, the other end of sliding block is connected with swing bar and drives its swing, and the swing bar swings and drives the lift of tile board, through single driver, carousel rotation push tile and lift tile board swing lift can be realized simultaneously, need not additionally add power component, reduce the number of power source, reduce the hardware cost and assembly complexity of overall device, avoid the cumbersome problem of multiple power source coordination control simultaneously, make power output more concentrated and efficient.

The application discloses an integrated high-speed three-channel cylindrical surface appearance detection device, which comprises a driving assembly, a feeding phase change cam assembly, a 2-to-3 cam mechanism, a cylindrical surface camera assembly, a cylindrical surface detection cam assembly, a 3-in-1 cam mechanism and a 3-in-1 discharging assembly. The feeding phase change cam assembly, the 2-to-3 cam mechanism, the cylindrical surface detection cam assembly, the 3-in-1 cam mechanism and the 3-in-1 discharging assembly are arranged in sequence along the conveying direction of the battery. The cylindrical surface camera assembly is located above the cylindrical surface detection cam assembly and is used for taking pictures of the cylindrical surface of the whole battery. The driving assembly is drivingly connected with the above-mentioned assemblies. The application realizes the conversion of the 2-row equidistant and continuous input battery flow into the 3-row equidistant and continuous conveying and cylindrical surface rotating detection battery flow. After the cylindrical surface detection is completed, the battery flow is combined into one row of battery flow for subsequent end surface detection.

The application relates to a cab height adjusting method for a commercial vehicle, which comprises the following steps: acquiring the real-time telescopic amount of a lifting oil cylinder of a cab through a displacement sensor installed on the lifting oil cylinder, acquiring the real-time included angle between the axis of the lifting oil cylinder and a horizontal plane through an inclination sensor installed on the lifting oil cylinder; calculating the height variation amount of the cab relative to a chassis based on the real-time telescopic amount and the real-time included angle, and calculating the height pressure adjusting amount of four air bags based on the height variation amount. The displacement sensor and the inclination sensor are integrated on the original lifting oil cylinder, so that the cab height information can be indirectly acquired, a special height sensor does not need to be additionally arranged, the number of sensors and the wire harness arrangement are reduced, the system hardware cost and the installation complexity are reduced, the active electric control adjustment of the cab posture can be realized without greatly reforming the whole vehicle framework, the system integration degree is high, and the application is easy to popularize and apply on the existing vehicle platform.

The present application relates to a kind of multi-sensor wideband sound source positioning method suitable for deep-sea reliable sound path environment, utilize the same sound source D-SR time delay measurement value observed by deep-sea large depth multi-sensor to carry out three-dimensional positioning to sound source.In the first stage, based on the position of each sensor, depth, observed D-SR time delay and water body sound velocity profile information, a matrix and a vector are constructed, there is a linear relationship between the two and the position of sound source, the least square method is used to solve this linear relationship, obtain the estimation result of the two-dimensional position of sound source, based on two-dimensional position estimation result, the depth estimation result of sound source is obtained using depth solution formula;In the second stage, based on the three-dimensional position of sound source estimated in the first stage, the D-SR time delay value of the position of each sensor is predicted, then an auxiliary variable matrix is constructed, and new sound source two-dimensional horizontal position estimation result is obtained according to the rule of auxiliary variable estimator (IVE), and finally the final sound source depth estimation result is obtained according to depth solution formula.

This invention discloses a method for restoring turbulent degradation images based on complex amplitude detection, belonging to the field of computational optics imaging technology. This method constructs a computational optics imaging system without a hardware correction unit. It utilizes a wavefront sensor and an imaging sensor to simultaneously acquire Hartmann images and target degradation images. A computational unit performs wavefront complex amplitude reconstruction and aberration correction. Based on this, a physically constrained end-to-end neural network architecture is designed. By reconstructing the wavefront complex amplitude, it achieves accurate mapping and inference from the Hartmann image to the point spread function of the imaging system. Finally, a multi-scale deconvolutional network is combined to complete high-quality restoration of the turbulent degradation image. This invention eliminates the need for a hardware corrector, overcomes the physical limitations of traditional adaptive optics, effectively solves the problem of insufficient point spread function accuracy, and enables time-delay-free and highly efficient turbulent image restoration under low-cost conditions.

The application provides a charger assembly, a vehicle charging method and a vehicle, and belongs to the technical field of automobiles. The core is that the on-off execution unit of the main circuit, namely, the positive electrode relay and the negative electrode relay, is accommodated and integrated in the vehicle-mounted charger assembly. On the physical connection, the passage from the battery positive electrode to the positive electrode of the charging pile through the positive electrode relay and the passage from the battery negative electrode to the negative electrode of the charging pile through the negative electrode relay are formed, so that the charging control logic is internalized in the charger assembly. Since the relays are no longer scattered in the battery or the external distribution box, but are uniformly designed and packaged as internal components of the charger assembly, the development of the external distribution box and the complex wire harness is avoided at the physical level, the number of external connectors and wire harnesses is reduced, the topology of the whole vehicle is effectively simplified, the development cycle of the whole vehicle is shortened, and the hardware cost of the whole vehicle is reduced.

The present application relates to the field of computer storage and optical communication technology, and discloses a memory and storage controller long-distance interconnection method and system based on optical communication. The method encapsulates high-speed, medium-speed and low-speed signals between the memory and the storage controller, converts them into optical signals, and then transmits them over optical fibers. The receiving end converts the optical signals back into electrical signals through an optical module, and restores the original signals. The system includes a sending end and a receiving end, both of which contain special circuit modules and optical modules to complete signal encapsulation, conversion, transmission and recovery. The present application can effectively solve the problem of low-speed signals that cannot be directly transmitted over optical fibers, is suitable for various types and protocols of memories, and supports long-distance memory interconnection in cross-cabinet distributed storage and large-scale computing environments. The system has a long transmission distance, strong anti-interference ability, can reduce hardware complexity and cost, and improve the reliability and expandability of the system.

The invention discloses an ultra-wideband weak signal detection method and system based on all-optical oscillation and phase-amplitude conversion. The method comprises the steps that spontaneous radiation light generated by an erbium-doped optical fiber amplifier is used as an optical carrier; modulating a weak radio frequency signal to be measured received by an antenna to the optical carrier through an optical modulator to form a modulated optical signal; the modulated optical signal is injected into an all-optical oscillation circuit composed of double loops, the all-optical oscillation circuit generates multimode optical oscillation by adjusting an optical attenuator, and the all-optical oscillation circuit comprises a double-loop interference structure; performing phase-amplitude conversion by adjusting the delay difference of the two light paths in the double loops to form an equivalent microwave photon filter so as to select and amplify the modulated light signal corresponding to the radio frequency signal of the set frequency band; and converting the selected and amplified modulated optical signal into an electric signal, and performing spectral analysis to detect the weak radio frequency signal to be detected.

The invention relates to the technical field of battery manufacturing, and particularly discloses a gluing quality detection method and system. The gluing quality detection method comprises the following steps: driving a camera to return along the original path of a gluing track by using a robot which finishes gluing to carry out segmented shooting on the gluing track of a workpiece, so as to obtain a plurality of glue line images; performing parallel processing on the plurality of glue line images to obtain a plurality of colloid regions and obtain colloid boundary contours in the colloid regions; calculating a glue width mean value, a glue width standard deviation or a glue spacing mean value of the gluing track according to the glue boundary contours in the plurality of glue areas; and according to the glue width mean value, the glue width standard deviation or the glue spacing mean value, the gluing track quality is judged. The gluing robot is used for driving the camera to return along the gluing track along the original path for shooting, the camera moves along the whole gluing path and collects images through the track synchronous flying shooting technology, and the problem of detection blind areas caused by view limitation of large-size workpieces is fundamentally solved.

The invention discloses a 3D waveguide type multi-core optical fiber link monitor which comprises an optical chip platform with n layers of stacked waveguide structures and a photoelectric detector, n is larger than or equal to 2, and the number n of waveguide layers of the optical chip platform is equal to the number of layers of connected multi-core optical fibers. The cross section distribution of waveguides in the optical chip platform and the cross section distribution of fiber cores of the multi-core optical fiber are the same and are in one-to-one correspondence; a waveguide channel corresponding to each fiber core of the multi-core optical fiber in the optical chip platform comprises an optical fiber signal coupling fan-out module, an optical signal beam splitting module, an optical signal monitoring module and a multi-core optical fiber signal coupling fan-in module which are connected in sequence; after an optical signal of a multi-core optical fiber transmitting end is coupled by the fan-out module, a small part of the signal is separated by the beam splitting module through a waveguide coupling effect and is used for monitoring, and most of the signal is transmitted back to a transmission link through the fan-in module; and the monitoring module realizes real-time detection through a photoelectric detector. According to the invention, no extra optical fiber fan-in / fan-out module is needed, the insertion loss is low, and the device is not sensitive to polarization.

The application discloses an LED display control card and a display device, the display control card comprising: a data processing module having a video and image processing unit and an audio processing unit; a video input interface for receiving an external video signal, the video input interface being connected with the video and image processing unit; a first output interface for connecting an LED display screen; a timing control module connected between the data processing module and the first output interface, the timing control module being used for providing a driving signal to the LED display screen; a microprocessor connected with the data processing module and the timing control module; wherein, the microprocessor pre-stores parameter configuration information of the LED display screen corresponding to the LED display control card, and the data processing module and the timing control module process the video signal according to the parameter configuration information to form a required driving signal to drive the LED display screen. The display control card and the display device of the application are not only low in cost, but also compatible with various third-party devices, meeting the requirements of various scenes.

This utility model belongs to the field of lithium battery technology, specifically relating to a circuit for cascaded detection logic control to protect multiple lithium battery strings. By cascading multiple single-cell lithium battery protection ICs and combining them with a logic control circuit constructed using PNP transistors, the circuit can precisely control the conduction or cutoff of the charging / discharging MOSFETs based on the output signal of each single-cell lithium battery protection IC, thereby achieving efficient protection for multiple lithium battery strings. The simple cascading method adapts to lithium battery packs with different numbers of strings, eliminating the need for complex protection circuits for each string, greatly reducing hardware costs and system complexity. The number of cascaded single-cell lithium battery protection ICs can be flexibly adjusted according to actual needs, making it suitable for battery pack applications in consumer electronics and power tools where cost control is crucial. Therefore, it not only solves the problems of high cost and complex design in existing technologies but also improves the stability and reliability of the system.

The application relates to the technical field of LED circuit, in particular to a lamp color adjusting circuit with a thyristor light modulation module, which comprises a rectifier circuit, a multi-grade dial code color adjusting circuit, a frequency flash removing circuit, a thyristor current discharge circuit and a constant current light modulation circuit. The rectifier circuit converts an alternating current power supply into a direct current voltage to supply power to a circuit system. The multi-grade dial code color adjusting circuit adjusts the current distribution of LED lamp beads through a dial code switch and a second group of resistors, generates a color adjusting signal, carries out low-pass filtering and dynamic compensation on the color adjusting signal, and outputs a pure control signal to the thyristor current discharge circuit. The thyristor current discharge circuit adjusts a current path according to the control signal to provide a smooth and adaptive power supply for the constant current light modulation circuit. The constant current light modulation circuit realizes constant current output. The design significantly reduces the hardware cost and the complexity of the circuit system, effectively suppresses electromagnetic interference in combination with the low-frequency modulation characteristics of the thyristor, and realizes the balance between light modulation precision and the stability of the circuit system.

The invention provides a high-speed rail 5G signal distribution circuit diagram generation method based on Bayesian estimation positioning, and the method comprises the steps: obtaining target network data, BDS positioning information and LBS ranging information, generating the positioning information of a current circuit library, and obtaining the positioning information of a historical circuit library; predicting first predicted position information at the next moment according to the current line library positioning information, and predicting second predicted position information according to the historical line library positioning information; target prediction position information at the next moment is determined through Bayesian estimation, and the actual position information is corrected into target position information; and generating a high-speed rail 5G signal distribution circuit diagram based on the target network data and the corrected target position information. According to the technical scheme provided by the embodiment of the invention, the historical experience position, the BDS positioning information and the LBS ranging information can be utilized, the next position can be predicted according to the Bayesian estimation to carry out position correction, and the high-speed rail 5G signal distribution circuit diagram can be accurately generated under the condition of reducing the hardware cost.

This invention discloses a gas-liquid detection device, method, and system based on the near-field load characteristics of an ultrasonic transducer, belonging to the field of underwater state monitoring and ultrasonic sensing technology. The device includes: an ultrasonic transducer that emits ultrasonic vibrations and receives near-field electroacoustic response signals; an excitation circuit that applies a pulse excitation signal to the ultrasonic transducer; an acquisition circuit that acquires near-field free oscillation signals at both ends of the ultrasonic transducer within a preset time window after the excitation ends; and a signal processing module that extracts time-domain feature parameters from the acquired near-field free oscillation signals, compares the extracted feature parameters with a preset threshold, and outputs a state indicator indicating whether the ultrasonic transducer is currently in a gaseous or liquid medium. The time-domain feature parameters are used to characterize the amplitude or attenuation characteristics of the near-field free oscillation signal. This invention requires only a single ultrasonic transducer, eliminating the need for a reflective surface or dual transducers, and has advantages such as simple structure, strong anti-interference capability, fast response speed, low power consumption, and high detection accuracy.

The application relates to an intensive transient disturbance regulation circuit, which comprises a three-phase bridge arm unit, a common DC side unit and a zero sequence bridge arm unit; the three-phase bridge arm unit is connected with each phase power supply branch of a three-phase power grid, a common neutral end of the common DC side unit and an input end of the zero sequence bridge arm unit, and an output end of the zero sequence bridge arm unit is grounded; the zero sequence bridge arm unit is used for generating a first current for offsetting a fault zero sequence component based on a power grid voltage, a power grid current and a common neutral end voltage of the three-phase power grid; the three-phase bridge arm unit is used for determining a three-phase reactive compensation current based on the common neutral end voltage and the first current input by the zero sequence bridge arm unit, and sending the three-phase reactive compensation current to a corresponding phase distribution line of the three-phase power grid; and the common DC side unit is used for providing common DC voltage support for the three-phase bridge arm unit and the zero sequence bridge arm unit. The zero sequence disturbance of the distribution network can be inhibited, and the voltage deviation and power fluctuation problems caused by the power grid transient disturbance can be weakened.

The invention discloses a direct current charging interface identification and positioning method, and belongs to the technical field of automatic charging of electric vehicles. The method comprises a coarse positioning stage and a fine positioning stage. In the coarse positioning stage, the initial position of the charging port is quickly determined through image preprocessing, contour screening and ellipse fitting. In the fine positioning stage, a multi-factor cluster matching algorithm is adopted, and firstly, a matching preselected area of each feature hole is determined according to a preset geometric cluster relationship among a plurality of feature holes in the charging port; secondly, dynamically calculating scaling and rotation coefficients of the template to adapt to different postures; and finally, constructing a matching degree evaluation function in combination with a central gravitation and edge gravitation principle, and performing matching calculation on an original image and a gradient image template so as to realize accurate positioning of the feature hole. The method solves the problem that the recognition precision and efficiency of the charging port are difficult to consider at the same time in a complex light field environment, and has the advantages of high positioning precision, high processing speed, high environmental adaptability and easy engineering deployment.

This invention discloses a method for high-density deformation monitoring and stress field prediction of tunnel surrounding rock, belonging to the field of tunnel engineering monitoring technology. The invention comprises three main modules: preliminary preparation, on-site high-density data acquisition, and data analysis and stress field prediction. Preliminary preparation involves defining monitoring parameters and debugging equipment. On-site monitoring utilizes deep boreholes, movable slideways, and reusable laser displacement gauges to achieve high-density, multi-angle deformation monitoring with a minimum spacing of 10cm, calculating corrected radial strain. In the data analysis phase, numerical simulation, database construction, and an improved BP neural network are used to train a stress field prediction model, predict radial stress around the borehole, construct a spatiotemporal evolution curve of surrounding rock stability, and implement graded early warning. This invention offers high monitoring accuracy, strong adaptability, and precise prediction of stress field evolution, reducing monitoring costs and providing reliable support for tunnel construction safety.

This invention belongs to the field of human-computer interaction technology, specifically relating to a microphone-based human-computer interaction method, device, medium, and system. The method includes: acquiring audio signals collected by at least one microphone on an electronic device; performing transient pulse detection on the audio signals, identifying short-time sound pulse signals, and calculating the pulse signal-to-noise ratio (SNR); performing spectral feature analysis on the audio signals, detecting the spectral changes of ambient sound signals before and after pressing; dynamically adjusting the comprehensive confidence weighted fusion weights based on the pulse SNR to determine whether a valid event has occurred; and generating corresponding interactive control commands if a valid event has occurred. Compared with existing technologies, this invention solves the problems of increased production costs due to added physical structures and incompatibility with existing production lines, as well as insufficient detection accuracy and susceptibility to false recognition when relying solely on microphones. This solution achieves microphone-press interaction without relying on additional hardware and exhibits high recognition rate and low false alarm rate under various environmental noise conditions.

The application discloses a kind of multi-obstacle prediction navigation obstacle avoidance methods based on single-line laser radar, first, the obstacle point cloud data detected by single-line laser radar is collected, the data is filtered and classified, and the obstacle point cloud array is obtained;Shape fitting is carried out on the classified obstacle point cloud array to realize the detection of obstacles;Data correlation is carried out on the obstacles detected in the adjacent two frames of obstacle point cloud arrays, the current motion state of each obstacle is obtained, and its historical trajectory is recorded to realize the tracking of obstacles;The trajectories of multiple obstacles in the future are predicted, the results of global path planner are read and segmented into multiple local paths;In each local path, map-free end-to-end strategy navigation is realized;The method of the application is applied to floor cleaning robots, service robots and AGVs and other mobile robots, improves the safety of robot obstacle avoidance, and has the characteristics of real-time and low cost.

This invention relates to a fluid velocity and flow rate detection device, and pertains to the field of fluid detection technology. The device includes: a fixed small steel plate and an elastic sensing unit; both the fixed small steel plate and the elastic sensing unit are disposed inside the fluid pipe to be detected; wherein, the lower end of the fixed small steel plate is fixedly connected to the inner wall of the fluid pipe, and a fixing part is provided at its upper end; the elastic sensing unit includes at least two elastic steel plates, one end of each elastic steel plate converging and connecting to the fixing part, and the elastic steel plates are radially distributed with the fixing part as the center; a first sensor is assembled at the other end of each elastic steel plate. This invention has a wide range of applicable media, strong anti-interference ability, and stable detection.