14results about How to "Increase hardware cost" patented technology

The invention relates to an ultrasonic fluid metering precision improving method and related equipment, and the method comprises the steps: exciting a first ultrasonic transducer through an excitation wave sequence, enabling a second ultrasonic transducer to work, obtaining a received digital signal corresponding to the excitation wave sequence, and calculating the signal-to-noise ratio of the received digital signal; wherein the excitation wave sequence is a combination of a main wave and a self-damping wave, and the signal-to-noise ratio is a ratio of a peak-to-peak value of a receiving signal area to a peak-to-peak value of a noise area; judging whether the signal-to-noise ratio is greater than a signal-to-noise ratio threshold value or not, if not, adjusting the occupation time of the high and low levels of the self-damping waves, and executing the excitation work again according to the adjusted excitation wave sequence until the actual signal-to-noise ratio is greater than the signal-to-noise ratio threshold value; and determining the corresponding excitation wave sequence when the actual signal-to-noise ratio is greater than the signal-to-noise ratio threshold as a target excitation wave sequence, and exciting the ultrasonic transducer to work according to the target excitation wave sequence so as to execute metering operation. According to the method, the measurement precision is remarkably improved while the hardware cost is not increased.

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 present invention relates to a GNSS / INS combined positioning method based on the difference of common frequency signals between systems. The invention combines the development trend of compatibility and interoperability of GNSS technology, utilizes the common frequency signals between different satellite systems, and proposes a new GNSS / INS combined positioning method based on the excellent stability of differential inter-system biases (DISB) between the same frequencies of different systems in the time domain. Firstly, the prior information of DISB parameters is obtained through ultra-short baseline static experiments; using the prior DISB information, GNSS / INS combined positioning is realized based on the GNSS tight combination RTK based on the difference of common frequency signals between systems. Compared with the traditional GNSS / INS combined positioning algorithm, this method can fully mine the information of multi-system GNSS and significantly increase the amount of available information, thereby effectively improving the positioning performance of the GNSS / INS combined system in complex environments.

The present disclosure relates to identification of an indoor-outdoor scene, and positioning of a mobile terminal. The method for identifying an indoor-outdoor scene, includes: at a side of a mobile terminal, scanning a current network signal to obtain a first information sheet of the current network signal; searching a first database according to the first information sheet; wherein the first database at least stores an information sheet of a wireless local area network and historical positioning data corresponding to the information sheet; the historical positioning data at least comprises satellite positioning success data and satellite positioning failure data; and when a second information sheet matching the first information sheet is found in the first database, identifying the indoor-outdoor scene according to historical positioning data (for example, satellite positioning success data and satellite positioning failure data therein) corresponding to the second information sheet.

The present invention discloses a periodic test method and system for static current of a vehicle. After the wake-up controller periodically wakes itself up, it determines whether the periodic wake-up condition of the vehicle control module is met; if the periodic wake-up condition of the vehicle control module is met, the vehicle control module is woken up; after the vehicle control module is woken up, it controls the load module connected to the battery circuit to generate a trigger current; based on the trigger current, the current acquisition module connected to the battery circuit is awakened; after the current acquisition module is awakened, the vehicle current is collected and sent to the vehicle control module; the vehicle control module determines the static current of the vehicle according to the vehicle current, and sends the static current of the vehicle to the wake-up controller. The present invention can realize controllable and periodic testing of static current based on the existing controller, and the cost is low.

The invention discloses a power failure protection system for a small AI cloud server, and relates to the technical field of direct-current power supply electronic equipment. A direct-current power supply input module in the system is connected with an external direct-current power supply; the system power supply module supplies power to the AI cloud server; the charging power supply generation module converts an input voltage into a stable voltage for charging; the farad capacitor charging and discharging module stores electric energy; when the full charge monitoring module monitors that the farad capacitor charging and discharging module is fully charged, a full charge signal is output; the power-down monitoring module outputs a power-down signal when monitoring that the external direct-current power supply is powered down; the CPU responds to the full electric signal and controls the charging power supply generation module to stop outputting; and responding to the power failure signal, executing a data protection process, controlling the standby power switch module to be switched on, and switching to the farad capacitor charging and discharging module to supply power to the AI cloud server, so that rapid seamless power switching and reliable data protection of the small AI cloud server during power failure are realized, the cost is low, and the reliability is high.

The utility model relates to a current sensor and a current measuring system, and the current sensor comprises more than one current measuring part which is used for sensing a current signal in a measured wire; the more than one connecting part is connected with the more than one current measuring part in a one-to-one correspondence manner, any one of the more than one connecting part comprises a signal acquisition unit and a memory, the signal acquisition unit is used for acquiring an electric signal sensed by the current measuring part and transmitting the acquired electric signal, and the memory is used for storing an identifier of the connecting part; and each instrument body is connected with one of the more than one connecting part, and is used for receiving the electric signal transmitted by the connecting part, converting the electric signal into a digital signal, and correcting the digital signal according to the identifier of the connecting part connected with the instrument body and / or a correction parameter corresponding to the identifier of the instrument body. According to the scheme, intelligent pairing of the current measuring part instrument body can be realized.

This disclosure presents embodiments of a single-lens-based image display method, apparatus, device, medium, and product. One specific implementation of the method includes: acquiring a scene image data stream captured by a target camera sensor; encoding the acquired scene image data stream to obtain a main stream; encoding the acquired scene image data stream based on a target region to obtain a secondary stream; and pushing the obtained main and secondary streams to an associated terminal device, causing the terminal device to display the main image of the corresponding main stream and the sub-image of the corresponding secondary stream. This implementation requires only a single lens to achieve a dual-image effect, reducing hardware costs and assembly complexity, lessening restrictions on product structure, and meeting users' personalized needs for selecting magnified areas.

The application provides a low-cost UWB single-anchor mobile phone fusion positioning system, which comprises a UWB anchor module, a smart phone and a UWB tag module, wherein the UWB anchor module is regarded as a UWB base station, and the position of the UWB anchor module is P BAS The UWB anchor module calculates and outputs distance information D between the UWB anchor module and the UWB tag module in real time, that is, the ranging is completed 1 , D 2 , D 3 The smart phone is connected with the UWB anchor module through a local area network, and the smart phone synchronously and in real time obtains the distance information D The application solves the problems of complicated deployment and high cost of the existing UWB indoor positioning, and is a low-cost, simple-to-deploy and long-term stable indoor UWB single-anchor fusion positioning system.

The invention provides a control method and a control device of a voltage source type converter. According to the alternating current port current of the VSC and the first alternating current side flux linkage, the alternating current port flux linkage of the VSC can be obtained, and then control over the VSC is achieved, namely control over the alternating current port voltage of the VSC is achieved. The flux linkage of the alternating current port is uniquely determined, so that the voltage of the alternating current port is uniquely determined, the flux linkage of the alternating current port is not influenced by the initial value of the flux linkage, asymmetry or overcurrent of the current of the alternating current port of the VSC is avoided, the VSC is not unstable in the transient fault process, and the operation reliability of the VSC is improved. Differential protection of the transformer can be realized, namely, the transformer can be prevented from entering deep magnetic saturation. The first alternating current side current and the second alternating current side current can be measured only through measurement equipment such as a sensor, calculation of the alternating current port flux linkage is achieved, and the hardware cost of the VSC cannot be remarkably increased due to the fact that the measurement equipment is additionally arranged.

The present application relates to the technical field of signal processing, in particular to a kind of distributed optical fiber acoustic sensing method and sensor of coherent fading suppression.Method includes: coupler divides continuous light into probe light and local oscillator light;Probe light is modulated into difference frequency delay double pulse by double pulse generator;Difference frequency delay double pulse is power amplified by erbium-doped fiber amplifier;After power amplification, after spontaneous emission noise is filtered out by optical band-pass filter, by circulator, inject into the optical fiber to be measured;Two pulses in pulse train generate RBS signal in the optical fiber to be measured and pass through circulator, pass through coupler and divide into two beams with equal power;One is mixed with local oscillator light by coupler, and the mixed light beam is received by balanced photodetector and then collected by data acquisition system;Another is directly received by ordinary photodetector;The present application realizes coherent fading suppression of distributed optical fiber acoustic sensor by combination processing of the output signals of two photodetectors.

The present invention provides a process control method, including: obtaining instruction information, and performing word segmentation processing on the instruction information; determining keywords corresponding to the instruction information according to the word segmentation processing result; triggering a business process matching the instruction information according to the keywords corresponding to the instruction information, so as to complete the designated business matching the instruction information through the business process. The invention also provides a process control device, an electronic device and a storage medium. The present invention can decouple Rom and App, and complete the designated business matching the instruction information through the business process by executing the internal capabilities of App itself, thereby reducing the need for Rom to continuously add such translation capabilities for App upgrades due to the continuous upgrade of App capabilities, and also reducing and increasing learning costs and hardware costs, effectively improving the user experience.

The invention discloses a fan yaw error self-correction control method, and relates to the technical field of wind power generation intelligent control, and the method comprises the following steps: S1, collecting a fan blade aerodynamic noise signal and fan operation data, and carrying out filtering, time synchronization calibration and blind source separation on an original signal to obtain a preprocessed aerodynamic noise signal; s2, based on the preprocessed aerodynamic noise signals, sound pressure level effective values of the windward side blades and the leeward side blades are extracted, and a noise symmetry coefficient is constructed; the method is based on an airport-end acoustic array. According to the wind turbine yaw error self-correction control method, the real inflow direction of a wind wheel is directly mapped through the spatial distribution characteristics of aerodynamic noise of the blades, the logic limitation of traditional indirect representation errors is broken through, high-precision perception and quick response of yaw errors are achieved, the wind energy capture efficiency and the power generation performance are effectively improved, and the wind turbine yaw error self-correction control method is suitable for large-scale popularization and application. The equipment service life is prolonged; the failure rate is reduced; and the system reliability is improved.

A smart home device control method, a medium, a terminal, and an apparatus. By approaching a target home device and obtaining device information thereof, and executing a device control program of a corresponding target home device according to the device information, the user operation is simplified, and the user experience of the home device is improved. The use of hardware multiplexing of a mobile terminal can enrich the function of the home device without significantly increasing the hardware cost of the home device, and reduce the design difficulty and complexity of the home device. The method includes: obtaining a distance between a target home device and a mobile terminal, and obtaining device information of the target home device when the distance is less than or equal to a preset distance (S11), and executing a device control program of a corresponding target home device according to the device information so as to control the target home device (S12). A computer program is stored on the medium for implementing the steps of the method. The mobile terminal includes a storage medium and a processor, the processor implementing the steps of the method when executing the computer program on the storage medium.