Abstract: A virtual track design system for mobile devices and implementation method thereof are disclosed. The virtual track design system includes communication module: which is mainly used for relevant map information, virtual track information, positioning information, and task information transmission, and acts as a bridge; interaction module: which sets fixed track with arbitrary shape and length through graphical editing environment, and supports segmental modification, deletion of tracks and other functions. After editing, sends the virtual track information to the intelligent cruise algorithm processing module; acquisition module: which gets the virtual track information provided by the interaction module, stores relevant data, and sends the information to the key point of track extraction module. The invention does not require additional cost to deploy auxiliary equipment, and is more convenient, flexible and fast to use.

Abstract: The invention discloses a virtual wall system for mobile devices and implementation method thereof. The virtual wall system for mobile devices includes: communication module: which is mainly used for the transmissions of relevant map information, virtual wall information, positioning information, and task information, and act as a bridge; interaction module: by which users set, add or delete the virtual wall information of any shape through the graphical editing environment, and sends this information to the processing part of the intelligent mobile algorithm; acquisition module: which obtains the virtual wall information provided by the interaction module, stores relevant data. The present needs no additional cost to produce additional auxiliary hardware devices, and is more convenient, flexible and fast for use.

Abstract: A method and a device are provided for a mobile robot to move in proximity to an obstacle. In the method, the mobile robot moves at a preset speed in a preset direction when it is detected that a distance between the mobile robot and the obstacle reaches a preset distance; a robot predicted moving space of the mobile robot in a next moving cycle is calculated based on the preset speed and the preset direction; and an adjusted speed and an adjusted direction of the mobile robot are determined based on the robot predicted moving space, so as to make the mobile robot move in proximity to the obstacle at the adjusted speed in the adjusted direction.

Abstract: A system may include a digital modulator configured to modulate an input signal received at an input of the digital modulator to generate a modulated input signal at an output of the digital modulator, a digital gain element having a digital gain and coupled to the digital modulator, an open-loop Class-D amplifier coupled to an output of the digital modulator and configured to amplify the modulated input signal, wherein the open-loop Class-D amplifier is powered from a variable power supply having a variable supply voltage which is variable in response to one or more characteristics of the input signal, and a control circuit configured to control the digital gain to approximately cancel changes in an analog gain of the open-loop Class-D amplifier due to variation in the variable supply voltage in response to the one or more characteristics of the input signal.

Abstract: A task optimization method and a task optimization device in a mobile robot are provided. The task optimization method includes: obtaining at least one task type in a mobile robot and usage information when all users use a task corresponding to each task type; separately performing machine learning on the usage information of all the users corresponding to each task type to obtain at least one piece of user's usage habit information corresponding to each task type and usage probability thereof, thereby performing machine learning on usage information when all users use the task corresponding to the task type; based on the at least one piece of usage habit information corresponding to each task type, the usage probability thereof and the real-time usage information, optimizing the task corresponding to the task type used by the user in real time.

Abstract: An adaptive region division method and system are provided. The adaptive region division method includes: building an environmental map based on laser radar data and odometer data, to determine information about an environment in which a target device is located (S11); performing feature extraction according to the laser radar data, to determine feature data, where the feature data includes line feature data and point feature data (S12); generating a virtual door according to the feature data and the information about the environment in which the target device is located (S13); and dividing a to-be-divided region where the target device is located according to the virtual door (S14). Therefore, a virtual door is generated according to laser data of a current environment to achieve the purpose of adaptive region division, so that the target device can more efficiently and quickly cover the whole space.

Abstract: A driver system may include a first n-type field-effect transistor coupled at its non-gate terminals between an output of the driver system and a first terminal of a supply voltage and configured to drive the output when the first n-type field-effect transistor is activated, a second n-type field-effect transistor coupled at its non-gate terminals between an output of the driver system and a second terminal of the supply voltage and configured to drive the output when the second n-type field-effect transistor is activated, a high-side capacitor coupled to the output of the driver system, and a low-side capacitor coupled to the second terminal of the supply voltage, wherein the high-side capacitor and the low-side capacitor are configured to track and correct for mismatches between a first resistance of the first n-type field-effect transistor and a second resistance of the second n-type field-effect transistor.

Abstract: The purpose of the invention is to provide a method for charging a robot and apparatus thereof. The invention according to the environment map and robot self-positioning information which is the position and orientation of the robot in the environment map, moves the robot to a position near a potential or registered charging pile; uses acquisition apparatuses such as laser to carry out line extraction of the structural data of the identification when the robot moves to short-range pile-searching connecting area, and combines with the preset structural data of the identification template, to carry out the recognition of the charging pile, after the collected structural data of the identification and the structural data of the identification template satisfy the preset matching degree, then the charging pile can be connected to the robot for charging.

Abstract: An apparatus detects a short of a class-D amplifier. A pulse detector detects an output PWM pulse exceeds a predetermined width and a controller differentiates whether the pulse width exceeding is caused by a short or by a large digital input signal occurring during normal operation based on an expected level of the digital input signal to a level of the digital input signal when the pulse width exceeds the predetermined width. The expected level is dynamically obtained in response to one or more previous PWM pulses exceeding the predetermined width during the normal operation and may be selected based on an amount the pulse exceeds the predetermined width. A lookup table of predetermined levels, selected based on impedance of a load, provides the expected level if the expected level has not yet been dynamically obtained when the pulse width exceeds.

Abstract: A signal processing system may include a modulation stage configured to generate a modulated input signal, an open-loop switched mode driver coupled to the modulation stage and configured to generate an output signal from the modulated input signal, a voltage regulator configured to generate a supply voltage that supplies electrical energy to the open-loop switched mode driver, and a control subsystem configured to, when a magnitude of the modulated input signal falls below a threshold magnitude, control the voltage regulator to control the supply voltage such that the output signal varies non-linearly with the modulated input signal for magnitudes of the modulated input signal below the threshold magnitude.

Abstract: A cell model for in vitro evaluation of compound-induced skin sensitization and a constructing method therefor. The method for constructing the cell model comprises the steps of: designing and constructing an sgRNA expression vector based on CRISPR/Cas9 vector system; designing and constructing a homologous recombinant vector capable of knocking a reporter gene linked to a self-cleaving peptide sequence into a specific site of the expression frame of the HMOX1 gene; co-transfecting the homologous recombinant vector, an hCas9 plasmid and the sgRNA expression vector into a cell, and carrying out monoclonal expansion to obtain the cell model. The present invention obtains a HaCaT cell model in which a luciferase gene is knocked in before the stop codon of the HMOX1 gene by combination of CRISPR/CAS9 and a monoclonal cell technique. The cell model realizes synchronous expression of the luciferase gene and the HMOX1 gene, thereby effectively distinguishing sensitizing compounds from non-sensitizing compounds.

Abstract: A system may include a digital modulator configured to modulate an input signal received at an input of the digital modulator to generate a modulated input signal at an output of the digital modulator, a digital gain element having a digital gain and coupled to the digital modulator, an open-loop Class-D amplifier coupled to an output of the digital modulator and configured to amplify the modulated input signal, wherein the open-loop Class-D amplifier is powered from a variable power supply having a variable supply voltage which is variable in response to one or more characteristics of the input signal, and a control circuit configured to control the digital gain to approximately cancel changes in an analog gain of the open-loop Class-D amplifier due to variation in the variable supply voltage in response to the one or more characteristics of the input signal.

Abstract: A new architecture is provided to support a precise information retrieval system on a web scale. The architecture provides algorithms to generate candidates and select the top N results via ranking models (e.g., Semantic ranking models, Aggregation ranking models) to capture term relationships between query and result contents at search-time.

Abstract: A driver system may include a first n-type field-effect transistor coupled at its non-gate terminals between an output of the driver system and a first terminal of a supply voltage and configured to drive the output when the first n-type field-effect transistor is activated, a second n-type field-effect transistor coupled at its non-gate terminals between an output of the driver system and a second terminal of the supply voltage and configured to drive the output when the second n-type field-effect transistor is activated, a high-side capacitor coupled to the output of the driver system, and a low-side capacitor coupled to the second terminal of the supply voltage, wherein the high-side capacitor and the low-side capacitor are configured to track and correct for mismatches between a first resistance of the first n-type field-effect transistor and a second resistance of the second n-type field-effect transistor.

Abstract: Disclosed are a method and a device for a mobile robot to move in proximity to an obstacle. In the method, the mobile robot moves at a preset speed in a preset direction when it is detected that a distance between the mobile robot and the obstacle reaches a preset distance; a robot predicted moving space of the mobile robot in a next moving cycle is calculated based on the preset speed and the preset direction; and an adjusted speed and an adjusted direction of the mobile robot are determined based on the robot predicted moving space, so as to make the mobile robot move in proximity to the obstacle at the adjusted speed in the adjusted direction.

Abstract: An apparatus detects a short of a class-D amplifier. A pulse detector detects an output PWM pulse exceeds a predetermined width and a controller differentiates whether the pulse width exceeding is caused by a short or by a large digital input signal occurring during normal operation based on an expected level of the digital input signal to a level of the digital input signal when the pulse width exceeds the predetermined width. The expected level is dynamically obtained in response to one or more previous PWM pulses exceeding the predetermined width during the normal operation and may be selected based on an amount the pulse exceeds the predetermined width. A lookup table of predetermined levels, selected based on impedance of a load, provides the expected level if the expected level has not yet been dynamically obtained when the pulse width exceeds.

Abstract: A peak junction temperature monitoring system for a semiconductor device includes a peak power dissipation sensor for sensing the peak power dissipation in the device. A temperature sensor senses an average temperature of the device, and a peak junction temperature computation circuit generates a signal representative of a peak junction temperature based on input from the peak power dissipation sensor and the temperature sensor.

Abstract: The present disclosure provides a system and a method for debugging a robot based on artificial intelligence. The system includes: a mobile terminal; and the robot, in which the mobile terminal and the robot communicate with each other wirelessly, and the mobile terminal is configured to set a state parameter of each function node of the robot, and to send a control command to the robot according to the state parameter of each function node, so as to control the robot to perform a test.

Abstract: A method of preparing a fluoroelastomer capable of being vulcanized by using peroxide, the method comprising: in the presence of an initiator and a chain transfer agent, conducting emulsion polymerization reaction on comonomers to obtain a fluoroelastomer. The preparation method utilizes alkyl iodide RIx as the chain transfer agent, and introduces the atom I into the molecular structure of the polymer during the reaction, the atom I acting as a crosslinking point during peroxide vulcanization. The fluoroelastomer obtained via the preparation method greatly improves the performance after being vulcanized; in addition, due to the low cost and extensive sources of alkyl iodide, the preparation method also simplifies the manufacturing process, reduces cost, and has wide application prospects.

Abstract: A peak junction temperature monitoring system for a semiconductor device includes a peak power dissipation sensor for sensing the peak power dissipation in the device. A temperature sensor senses an average temperature of the device, and a peak junction temperature computation circuit generates a signal representative of a peak junction temperature based on input from the peak power dissipation sensor and the temperature sensor.