54results about How to "No need to increase hardware costs" patented technology

The invention discloses a sign-in method based on a two-dimensional code. The sign-in method based on the two-dimensional code is characterized by comprising the following steps of: displaying the two-dimensional code; scanning the two-dimensional code by a mobile terminal, analysing to obtain the access point information, sign-in server information and user identifier information of the two-dimensional code, connecting to a WIFI (wireless fidelity) network according to the access point information, connecting to a sign-in server according to the sign-in server information, and sending the user identifier information to the sign-in server by the mobile terminal; and confirming the sign-in of a user by the sign-in server according to the received user identifier information, and recording the sign-in time of the user according to a scanning time. With the adoption of the sign-in method based on the two-dimensional code disclosed by the invention, no-queuing sign-in can be realized, and the case of copying the two-dimensional code for allograph can be prevented. Simultaneously, the invention further discloses a mobile terminal and a sign-in server.

The invention provides a system and a method for pronunciation correction. The system for pronunciation correction is used to correct pronunciation of users. The system for pronunciation correction comprises a signal sampling module and a signal processing module. The signal sampling module is used to acquire signals when a user pronounces. The signal processing module is used to obtain a corresponding standard pronunciation signal according to the signal when a user pronounces, and compare the signal when a user pronounces with the standard pronunciation signal. If differences between the signal when a user pronounces and the standard pronunciation signal satisfy a preset requirement, the system prompts the user that pronunciation is correct. If the differences between the signal when a user pronounces and the standard pronunciation signal do not satisfy the preset requirement, the system prompts the user that pronunciation is wrong. The system and the method realize that after a word is read, the signal processing module feeds back a result immediately, to determine whether user pronunciation is correct or not. The system and the method are in high interactivity, and compare pronunciation of users and the standard pronunciation in real time, and are instant and convenient and fast.

The invention provides a method and device for saving electric energy as well as a mobile terminal, and the method, device and mobile terminal provided by the invention are suitable for the field of mobile communication; and the method comprises the following steps: obtaining the current running task of the mobile terminal; according to the current running task, adjusting the CPU (central processing unit) frequency on the basis of the corresponding relation between the predetermined setting task and the CPU frequency. In the invention, the current running task of the mobile terminal is obtained firstly, and then the CPU frequency is adjusted without increasing the hardware cost on the basis of the corresponding relation between the predetermined setting task and the CPU frequency according to the current running task; and different CPU frequencies are required to be used for different tasks so that the purpose of saving electric energy is achieved.

The invention discloses a locomotive temperature sensor fault diagnosis and fault tolerance estimation method comprising the following steps: (1) pre-establishing the corresponding relationship between fault conditions and measured temperature values and a relation model between the measured temperature value and true temperature value under each fault condition; (2) acquiring the current measured temperature value in real time when a locomotive is running, judging whether the current measured temperature value is an effective detection value, diagnosing that a temperature sensor is in a normal state and outputting the current measured temperature value as a true temperature value if the current measured temperature value is an effective detection value, or diagnosing that the temperature sensor is in a faulty state and going to step (3); and (3) positioning the fault condition corresponding to the current measured temperature value according to the corresponding relationship, and reconstructing or estimating the current true temperature value according to the relation model. The locomotive temperature sensor fault diagnosis and fault tolerance estimation method of the invention is advantageous in that implementation and operation are simple, the fault of the temperature sensor can be automatically diagnosed, and accurate positioning of a specific fault condition and true temperature value reconstruction or estimation are realized.

The invention discloses a method of simultaneously playing mutually-exclusive audios. The method comprises steps of determining an audio mixing enhancing application program via addition of an audio type of STREAM_FORCE_MIX and according to user selections, correcting an audio data type of the audio mixing enhancing application program into STREAM_FORCE_MIX, applying an audio strategy according to the STREAM_FORCE_MIX type, and gradually lowering media player media volume according to a set audio mixing enhancing priority strategy and a volume management strategy when the audio mixing enhancing application program and the audio data of the media player are played at the same time. And therefore, demands of hearing two or more sounds upon some scenes by users can be met, and multi-audio interaction experience can be improved for the users.

The utility model discloses a method for single-chip board production test, wherein the single-chip board production test is realized by inserting the test single-chip board into a test backboard. The method comprises the steps that: the measured single-chip board produces an excitation signal, which is preferred to be a pseudo random binary sequence bit stream and is sent to the test backboard; the test backboard sends the excitation signal back to the measured single-chip board via a circuit interface loopback; the measured single-chip board checks the sent back excitation signal, and judges whether the measured single-chip board is normal according to the sent back excitation signal. Correspondingly, the utility model also provides a test backboard. Thereby, the utility model needs not to add the hardware cost to the measured single-chip board; the test cost is greatly reduced; the testing efficiency is improved; and the production test requirements needed by mass production are satisfied.

The invention relates to an automatic detection method of the fault of a program guidance (PG) motor, which comprises the following steps of: (1) when an air conditioner is started, setting a single chip computer in an air-conditioning controller to always detect the feedback signal of the PG motor; (2) if the single chip computer does not receive the feedback signal of the PG motor within the set time t1, switching off a power supply of the PG motor; (3) after the set time t2, switching on the power supply of the PG motor by the single chip computer and starting detecting the feedback signalof the PG motor; and (4) if the single chip computer still does not receive the feedback signal of the PG motor within the set time t1, judging that a fault occurs in the PG motor and displaying the fault code of the fault of the PG motor on a display screen of the air conditioner. By adopting the method, the quality in the after-sale service and the production process of the air conditioner are very convenient to manage and control.

The embodiment of the invention provides a temperature control method and a heating cooking device, and belongs to the field of temperature control. The method comprises the steps that the current temperature in a cavity of the heating cooking device is received; the turn-on time of a heating module of the heating cooking device in the next time cycle is calculated according to the current temperature and the target temperature that the interior of the cavity of the heating cooking device needs to maintain; and on-off of the heating module in the next time cycle is controlled according to theturn-on time, wherein the heating module heats the interior of the cavity on the condition that the heating module is turned on. Precise temperature control can be achieved through an easy calculationmethod. In addition, improvement of the control mode can be achieved by updating a software algorithm without changing existing hardware facilities of the heating cooking device and increasing extrahardware cost.

The terminal thereof comprises a trace setting unit, a trace monitoring unit, a trace executing unit, a channel controlling unit, a location unit and an encryption unit. The notice of trace can be sent to an appointed receiving device by using short message, multimedia message and email.

The invention relates to the control technology of electric motors and discloses a method for detecting an input outage of a frequency converter. The method for detecting the input outage of the frequency converter comprises the steps that the input current of the frequency converter is monitored in real time in each preset period T, and the output current and the busbar voltage of the frequency converter are monitored in real time; output energy Wout is calculated according to the output current; the energy storage change delta Wc of a busbar capacitor is calculated according to the busbar voltage; the frequency of breakdowns of the frequency converter is recorded according to the energy storage change delta Wc and the output energy Wout; it is judged that the input outage of the frequency converter occurs if it is detected that the frequency of the breakdowns of the frequency converter is larger than a preset frequency. Compared with the prior art, the method for detecting the input outage of the frequency converter has the advantages that the input outage of the frequency converter can be detected rapidly and timely, and hardware cost is reduced.

The invention discloses a method and system of unlocking a card according to a network state, and a mobile terminal. The method comprises: monitoring the network state of a first SIM card in a first card slot; detecting and determining whether the first SIM card has network service; controlling the mobile terminal to lock a second card slot when the first SIM card has network service; and controlling the mobile terminal to unlock the second card slot when the first SIM card has no network service. The method monitors and determines the network service state of an assigned card slot provided with an SIM card to be used first, locks the other card slot when network service exists, and unlocks the other card slot for normal use when network service does not exist, thereby greatly reducing the cost of a roaming SIM card caused by SIM card misoperation by a user, requiring no extra hardware cost, and providing convenience for the user.

The invention discloses a public transportation navigation method for blindmen. The public transportation navigation method comprises the following steps: a client side receives public transportation information input by a user through a voice input module; the voice input module codes the public transportation information and the hardware information of the client side, and sends the codes to an instruction sending module; after receiving the codes, the instruction sending module sends the codes to a server; after receiving the codes, the server verifies the codes; if the codes do not pass verification, the client side plays back the public transportation information through the voice input module; if the codes pass verification, the connection between the server and the client side is established, and the user is reminded to get on a bus when the bus gets on a station. The invention further discloses a public transportation navigation system for the blindmen. According to the system and method, as public transportation information is prompted through voice, the blindmen can know the public transportation getting in condition and the running condition taken by the blindmen; the system cost is low.

The invention discloses a method and a device for adjusting the brightness of screens of computers. The method for adjusting the brightness of the screens includes steps of S1, selecting a plurality of brightness step values from all brightness step values of computer systems and respectively defining the brightness step values as diversified self-defined brightness modes; S3, allowing users to operate brightness hot keys to trigger brightness mode adjusting events so as to select one of the diversified self-defined brightness modes; S5, adjusting the brightness of the screens so as to match screen brightness values with the selected self-defined brightness mode. Each brightness step value of each computer system has the corresponding preliminarily matched screen brightness value. According to the technical scheme, the method and the device have the advantages that the diversified self-defined brightness modes can be defined according to requirements of the users on the brightness of the screens in different scenes or self-defined brightness demand, so that the brightness step values which are applicable to the existing scenes can be provided by the method and the device, and schemes for quickly and conveniently adjusting the brightness of the screens can be provided for the users.

The invention discloses a dish-washing machine drainage detection method and a dish-washing machine drainage detection device. The dish-washing machine drainage detection method comprises the steps that a dish-washing machine starts to execute a water inlet program, water inlet is started after drainage of execution time t, the situation that a water inlet parameter reaches a preset water level isdetected, the detected water inlet parameter is compared with a preset value, and the drainage fault situation is judged. The method is convenient and reliable, can accurately judge and grasp whetherdrainage of the dish-washing machine is finished or not, and further can accurately judge whether the dish-washing machine has a drainage fault or not.

The invention provides a vehicle ramp slope identification method and device. The method comprises the steps: obtaining the average wheel speed of front wheels, the average wheel speed of rear wheels,the engine torque change rate, the brake master cylinder pressure and the longitudinal acceleration measured by an inertial acceleration sensor of a vehicle; performing filtering differential processing on the average wheel speed of the rear wheel and the average wheel speed of the front wheels to obtain a rear wheel acceleration filtering value and a front wheel acceleration filtering value; filtering the longitudinal acceleration measured by the inertial acceleration sensor to obtain an inertial longitudinal acceleration filtering value; and determining the slope angle of the vehicle on a ramp according to the difference between the rear wheel acceleration filtering value and the front wheel acceleration filtering value, the engine torque change rate, the brake master cylinder pressureand the difference between the rear wheel acceleration filtering value and the inertia longitudinal acceleration filtering value. According to the identification method, the ramp is identified by adopting the existing sensor of the vehicle, so that the control of the vehicle can be corrected, the cost can be saved, and the accuracy of the obtained ramp slope can be effectively ensured to be higher.

The invention discloses a method for automatically matching a projection image with a curtain area in the technical field of projectors, and the method comprises the following steps: firstly, making four binary square marks based on an ArUco library, and recording the ID of each mark, the size of the pure white image is the size of the original picture projected by the projection device, the method can automatically identify the curtain area and project the projection picture into the target area, so that the method can automatically adapt to curtains of various proportions, meanwhile, the requirement for the use environment is not high, and the method is suitable for popularization and application. The defects of an existing automatic trapezoid correction algorithm can be overcome. Besides, images are acquired only by the aid of a camera, additional hardware cost is not needed on the basis of hardware of an existing projector, relevant calibration is not needed when projection pictures are corrected, and operation is simple and fast.

The invention discloses a frequency-spectrum scanning device and a method thereof. The device comprises a back end equipped on a base station system and is characterized in that the device further comprises a frequency-spectrum collection / storage module for the real-time collection and storage of frequency-spectrum amplitude corresponding to each user carrier frequency; a processor for reading out the value of the frequency-spectrum amplitude, processing and packaging the value of the frequency-spectrum amplitude by a first software module, and then transmitting the processed and packaged results to a second software module equipped on the back end for the next processing; and a display unit for displaying the frequency-spectrum curve obtained after the processing by the second software module. The invention solves the problem that the prior base station system fails to display the frequency-spectrum curve of user carrier frequency by using software, and has the advantages of low hardware cost and reduced labor and material costs.

The application discloses a method, a device, electrical equipment and a photovoltaic system for preventing energy back-filling. The method comprises the following steps: controlling a five-level inverter to operate in a three-level operating mode in a grid-connected manner and a preceding stage Boost circuit of the five-level inverter to be maintained in an operation stop state when a potential safety hazard of back-filling of energy to a photovoltaic cell panel from a direct current side of the five-level inverter exists in the photovoltaic system, wherein the three-level operating mode refers to an operating mode of outputting a level +2, a level -2 and a level 0 by the five-level inverter. Therefore, the back-filling of energy to the photovoltaic cell panel from the direct current side of the five-level inverter is avoided.

The invention discloses a method for inquiring about English words or phrases by TV set, comprising the steps of: corresponding the dot array data formed by coding Chinese character base and English word meanings to Chinese character base coded data to form a dictionary base of binary data and storing the dictionary base in flash memory; CPU of the TV set loads inquring program; a user inputs English word or phrases by numeric keys on remote controller in multiplexing mode; the inquiring program inquires out the Chinese character codes for the related English word or phrase meanings, and then further inquires out the related Chinese character display dot array according to the Chinese character codes; OSD system displays the inquired results on screen. And it can not increase hardware costs of TV set and bring about hidden trouble to the TV set by increasing hardware.

The invention provides an equipment control method, device and gateway and relates to a field of internet of things. The invention aims to solve a problem of inter-communication incapability of applications and equipments of different specifications. The equipment control method includes obtaining a message of a first equipment in a first protocol type network; converting the message of the first equipment to a control message controlling an executing action of a second equipment in a second protocol type network; sending the control message to the second equipment. Therefore, inter-communication between the first equipment and the second equipment is realized.

The MP3 playback method for cellphone includes the step of introducting MP3 file and the step of playback of MP3 file. The cellphone PIM software send MP3 file to the serial port of cellphone via data bus; the cellphone diagnosis module detects serial port data to obtain MP3 file before interacting with data management module; and the data management module and the file system module complete the storage of MP3 file in flash memory while creating file list. UI receives the user's MP3 playback command, transmits it to phonetic service module and performs state transfer or other operation based on the return state of the phonetic service module; the phonetic service module and file system module interact to obtain relevant data of MP3 file; and after data diagnosis, decoding and D / A conversion, the sound is sent out in earphone or loudspeaker. The present invention can realize MP3 introducing, storing, playing back and deleting functions in 16 KHz sample rate without affecting the performance of software system in CDMA cellphone.

The invention discloses a power battery monitoring system and a vehicle. The power battery monitoring system comprises a power battery management system, the power battery management system comprises an acquisition board and a main control board, the main control board comprises a controller and a converter, the controller is connected with the converter, and the converter is connected with the acquisition board; the acquisition board is independently powered by the power battery, can continuously monitor the voltage and the temperature of the power battery, and feeds back a fault signal to the converter when the voltage and / or the temperature are / is abnormal; when the converter receives the fault signal, if the power battery management system is in a sleep mode, the converter is automatically awakened firstly, and then the controller is awakened to enter an operation mode, so that the controller executes a corresponding fault diagnosis action according to the fault signal. According to the invention, continuous safety monitoring of the power battery is realized in the sleep mode, the safety risk of the battery is reduced, a wake-up function does not need to be set, dark current consumed during working is very low, and additional hardware cost does not need to be increased.

The present invention relates to the field of intelligent televisions, and discloses an automatic pressure test method of an intelligent television. After a test process is set by man, the test process can be repeatedly used for pressure test. The method comprises the steps of firstly, booting the intelligent television, and allowing a system to enter an entry mode; then, numbering the intelligent television, and storing a number, a press time corresponding to the number, and an interval time between two adjacent test keys in a memory space; and reading the number, the press time corresponding to the number, and the interval time between the two adjacent test keys, and performing pressure test. The method is applicable to pressure test of the intelligent television.

The invention relates to the field of indoor positioning, and provides an indoor visible light positioning method based on machine learning. The method comprises the following steps of acquiring a training set that includes at least one set of training data, wherein the set of training data includes a channel estimation matrix parameter set and position information of a receiver corresponding to the channel estimation matrix parameter set, and the channel estimation matrix parameter set includes channel estimation matrix parameters of at least three light sources defining a unit area; calculating the corresponding channel estimation matrix parameter set received by the receiver to be located, and inputting the channel estimation matrix parameter set into a machine learning model trained bythe training set; and outputting the position information of the receiver to be located. Since the channel estimation matrix of each light source is used as a parameter, and the machine learning model is combined, the calculation accuracy is improved.

The invention relates to a volume adjustment method, a mobile terminal and a storage medium. The method comprises: collecting preset sound in the environment where the mobile terminal is located, wherein the preset sound comprises environment noise, background sound and target voice; performing spectrum analysis processing on the preset sound to separate and obtain respective spectrum intensitiesof the environment noise, the background sound and the target voice; and comparing the respective spectral intensities of the environmental noise, the background sound and the target voice, and executing a corresponding volume control operation on the mobile terminal according to a comparison result. The invention discloses a game use mode for a mobile phone. Through the interactive recognition ofthe environment noise, the background sound and the target voice, the size relation of the game background sound, the environment noise and the target voice can be well distinguished and adjusted, additional hardware cost does not need to be increased, and the method can also be widely applied to scenes of automatic adjustment of voice call volume of a bracelet, a watch and the like.

The invention discloses a multi-level NPC converter control method and device, and the method comprises the steps: injecting a target output voltage into third harmonics, and obtaining a first modulation wave of the target output voltage; determining a harmonic injection direction according to the target output voltage and the measured output current; obtaining a midpoint harmonic factor according to the harmonic injection direction and the unbalance balance factor; the value of the unbalance balance factor is determined by the target output voltage and the direct-current bus voltage, the direct-current upper half bus voltage and the direct-current lower half bus voltage of the NPC converter; the harmonic injection direction indicates the direction of a midpoint harmonic factor; injecting a midpoint harmonic factor into the first modulated wave to obtain a second modulated wave; and comparing the second modulated wave with the carrier wave to obtain a switching sequence of a switching tube in the NPC converter. The method provided by the invention only needs to calculate the harmonic injection direction and calculate the midpoint harmonic factor according to the unbalance balance factor, so that the whole calculation process is simple, and the adjustment speed is high.

The invention discloses a risk identification method and a related device, which are applied to the field of optical networks, and ensure that a failed optical fiber is accurately positioned subsequently by judging the credibility of optical fiber data collected from different detection points, so that the service recovery time is effectively shortened. Verification is carried out from the optical fiber data, manual regular inspection and additional hardware are not needed, and the risk identification efficiency is effectively improved. The method comprises: receiving any two optical fiber data sent by a first transmission device or a second transmission device, first optical fiber data in the any two optical fiber data indicating a first optical fiber feature of a first optical fiber detected at a first detection point; the second optical fiber data indicates a second optical fiber feature of the second optical fiber detected at the second detection point or a third optical fiber feature of the first optical fiber, then making a risk judgment based on a first correlation coefficient between the first optical fiber data and the second optical fiber data, and generating alarm information when the first correlation coefficient is smaller than a preset safety threshold.

The invention discloses a portable device sensing control system, which comprises a recording module, a judgment module, a comparison module and a control module, wherein the recording module is used for recording light quantity information in the starting of an interface and recording current light quantity information at the interval of preset time; the judgment module is used for judging the type of the currently started interface and judging whether a proximity sensor senses a shadow or not; the comparison module is used for judging whether the recorded current light quantity information is consistent with the light quantity information recorded in the starting of the interface, and calculating a difference value between the recorded current light quantity information and the light quantity information recorded in the starting of the interface if the recorded current light quantity information is inconsistent with the light quantity information recorded in the starting of the interface; and the control module is used for controlling the zooming in / out of the started interface or the upward and downward scrolling of a scrollbar according to the type of the started interface, the difference value between the current light quantity information and the light quantity information recorded in the starting of the interface and whether the proximity sensor is shadowed or not. The invention also provides a portable device sensing control method. By the system and the method, the zooming in / out of the interface of a portable device or the scrolling of the scrollbar can be conveniently controlled.