7331 results about "Power supply voltage" patented technology

An output drive circuit includes: a totem-pole output including: a high-side transistor (HST) with drain and source, an output stage power supply voltage applied to the drain, the source connected to the first node (N1); and a low-side transistor with source and drain, a ground voltage applied to the source, the drain connected to N1; and a bootstrap part including a capacitor supplying charge to a gate of HST when on, the charge being charged when HST is off, and one terminal of the bootstrap part connected to N1, the output drive circuit further including: a first transistor (T1) that conducts when HST is to be on, T1 connected between a drive circuit power supply voltage and the gate of HST; and a second transistor conducting when HST is to be turned on, the second transistor connected between the other terminal of the capacitor and HST gate.

The invention relates to an intelligent vacuum coating quality monitoring method based on artificial intelligence, which comprises the following steps: collecting process parameters in real time through a coating equipment sensor, dynamically monitoring vacuum degree change, deposition rate deviation and temperature gradient, and standardizing data flow to obtain a quantitative trend curve of process parameter fluctuation; combining the defect microcosmic feature description set with gas flow fluctuation and power supply voltage jitter to obtain a correlation analysis result of process parameters and defect forms, and calibrating defect types according to a defect feature library to obtain an updated defect classification basis; and inputting real-time new surface image data through the updated defect classification basis, performing defect detection for illumination reflection differences and stripe deflection angles, obtaining a preliminary defect classification result, and adjusting classification weight parameters.

The invention provides a wide-voltage self-adaptive closed-loop vector swimming pool pump anti-interference method, and relates to the technical field of motor control and power electronics, and the method comprises the steps: collecting three-phase power supply voltage fluctuation characteristic parameters and motor operation state parameters in real time; performing amplitude compensation and phase synchronization correction on the voltage parameter based on the dynamic voltage compensation factor; a closed-loop vector anti-interference control model is constructed, and model parameters are adjusted in real time through a vector immunity coefficient; dynamically correcting control output by adopting a multivariable feedback regulation mechanism; executing an anti-interference instruction and synchronously updating PWM modulation parameters, and verifying a control effect in combination with hardware-in-the-loop simulation; and parameter self-learning optimization is realized through a genetic algorithm. The dynamic anti-interference capability under power grid voltage fluctuation and harmonic interference is improved, intelligent thermal management is realized through a temperature-voltage-current multi-dimensional coupling model, full-life-cycle self-adaptive optimization of the system is guaranteed, and the problems of compensation lag, insufficient harmonic suppression and poor long-term stability are effectively solved.

The invention belongs to the technical field of power supply management, and particularly relates to a high-precision DCDC power supply voltage stabilization calibration system and method, which comprises a DCDC power conversion module, a traditional feedback control module, a high-frequency ripple sampling and digitization module, a dynamic load prediction module, a feedforward compensation generation module and a calibration management module, through high-frequency ripple sampling and digital output of ripple signals, real-time spectrum analysis is carried out to predict load transient changes, prospective compensation signals are generated, and traditional feedback control is combined to finely adjust PWM signals of the DCDC module. According to the scheme, feedback lag is overcome, transient overshoot / undershoot of voltage is remarkably restrained, the dynamic voltage stabilization error is controlled within + / -0.3%, and high-precision voltage stabilization under both static and dynamic working conditions is achieved.

The invention discloses a power-on reset circuit, and relates to the technical field of integrated circuits, in order to eliminate static power consumption of the power-on reset circuit and reduce power consumption of the power-on reset circuit, the power-on reset circuit comprises a discharge delay circuit, a current mirror circuit and a buffer circuit; the discharge delay circuit comprises a capacitor and an NMOS (N-channel Metal Oxide Semiconductor) tube M4, and the NMOS tube M4 is used for discharging the capacitor; the current mirror image circuit comprises an NMOS tube M2, an NMOS tube M3 and a PMOS tube M9. The grid electrode of the NMOS tube M2 and the grid electrode of the PMOS tube M9 are respectively connected with the output end of the buffer circuit; the grid electrode of the NMOS tube M3 is respectively connected with the source electrode of the PMOS tube M9, the drain electrode of the NMOS tube M2 and the grid electrode of the NMOS tube M4; the current mirror image circuit is used for turning off the NMOS tube M2 after the reset signal is ended, and pulling up the drain electrode voltage of the NMOS tube M3 to the power supply voltage through the PMOS tube M9, so that the NMOS tube M3 enters a deep linear region, and a direct current path from the power supply to the ground in the current mirror image circuit is cut off; and the buffer circuit is used for outputting a reset signal according to the voltage change of the capacitor in the discharge delay circuit.

A power management circuit is disclosed that includes a boost converter, a pass transistor, and an overcurrent detect circuit. The boost converter is configured to convert an input voltage into a first power supply voltage. The pass transistor is configured to transfer the first power supply voltage as a second power supply voltage after a predetermined time from a time point at which the first power supply voltage is activated. The overcurrent detect circuit is configured to perform an overcurrent detect operation by sensing a current flowing through the pass transistor. A display device is also disclosed that includes the power management circuit.

The invention belongs to the technical field of large-depth ground-to-air electromagnetic detection, and particularly relates to a light-weight high-power ground-to-air electromagnetic detection power supply system and method and a high-power vehicle-mounted power supply. Two paths of lithium battery units connected in parallel are adopted to provide short-time high-power emission current for a transmitter; the controller is used for acquiring a detection task set by the transmitter and setting a reference voltage according to the detection task; the voltage acquisition module is used for acquiring a direct-current bus voltage and comparing the direct-current bus voltage with a reference voltage to obtain a current modulation signal; and the controller is also used for acquiring the output current of each path of lithium battery unit and outputting a control signal according to the current modulation signal to compensate the output current of each path of lithium battery unit. According to the invention, the stability of a power supply system is realized when different instantaneous high-power outputs in a detection task in a high-power ground-air electromagnetic detection system are realized. When the output voltage and the sudden increase or decrease of the load current are adjusted as required, the stable output of the power supply voltage is realized.

In a battery monitoring device for monitoring a state of a rechargeable battery that includes an electrolyte and a plurality of electrodes, a response signal input unit is configured to receive a response signal of the rechargeable battery to a predefined AC signal, and a calculation unit is configured to calculate a complex impedance of the rechargeable battery based on the response signal. A power supply unit is configured to receive a power supply voltage from the rechargeable battery and supplies the power supply voltage to at least the calculation unit. A first electrical path connecting the rechargeable battery to the power supply unit and a second electrical path connecting the rechargeable battery to the signal control unit are provided independent of each other. The signal control unit is configured to cause the rechargeable battery to be monitored, as a power source, to output the predefined AC signal.

The invention discloses an output voltage detection method and system based on an aviation power supply, and relates to the technical field of aviation power supply voltage detection. A differential voltage sensor is connected to the output end of an aviation power supply, a high-frequency suppression capacitor is connected in parallel, the sampling rate of 20-50 times of the working frequency is set according to the type of the power supply, and the signals are collected and converted into analog voltage signals; the analog signal is subjected to two-stage filtering, is amplified to 0-5V through an instrument amplifier, and is converted into a digital voltage sequence through a 16-bit ADC (Analog to Digital Converter); calculating AC power supply effective value, peak value and other parameters, DC power supply average value, ripple coefficient and other parameters; comparing the characteristic parameters with a preset threshold value, determining that the characteristic parameters exceed the threshold value and recording related information; and a detection result is transmitted to a monitoring terminal through an RS485, data is locally stored, and a switching value is output to an alarm device when the data is abnormal. The method adapts to aviation power supply load fluctuation and environment temperature change, detection precision is high, data transmission and storage are safe, abnormity is accurately identified and early warning is carried out in advance, and aviation power supply operation and maintenance reliability and efficiency are improved.

The invention provides a three-loop on-chip integrated low-dropout linear voltage regulator, which comprises a three-port source follower type voltage follower, which comprises a first anti-phase end, a normal phase end, a second anti-phase end and a first output end; the error amplifier is used for comparing a reference voltage with an output voltage so as to provide a first control signal for the first anti-phase end; the self-feedback bias module is used for receiving an internal voltage signal of the three-port source follower type voltage follower so as to provide a second control signal for the second anti-phase end; the grid electrode of the power tube is connected with the output end, the source electrode is connected with the power supply voltage, and the drain electrode serves as a second output end and is used for receiving the adjusting signal output by the first output end; the output driving current of the power tube is adjusted based on the adjusting signal; and the bias module is used for providing bias voltage for the three-port source follower type voltage follower and the error amplifier. The transient response performance of the voltage stabilizer can be improved under the condition of no off-chip large capacitance.

To provide a full-rotation type non-contact power transmission connector device.SOLUTION: A full-rotation type non-contact power transmission connector device includes a power supply module a full-bridge inverter module, a primary-side resonance compensation module, a full-rotation type ball connector module, a secondary-side resonance compensation module, and a full-bridge rectification module. The power supply module supplies a supply voltage required for the device. The full-rotation type ball connector module provides radial rotation between a ball head device and a ball seat device, and a receiving coil and a transmitting coil are located in the ball head device and ball seat device, respectively. The primary- and second-side resonance compensation modules include primary- and secondary-side LCC reactive power compensation modules and primary- and secondary-side coil capacitors.SELECTED DRAWING: Figure 6

A control device (100) for controlling a number N, with N ≥ 1, of actuators (200) for actuating N optical elements of an optical system, comprising a control node (K2) coupling to the actuator (200) for providing a control voltage (V2) for the actuator (200), an amplifier (110) configured to receive a supply voltage (V1) provided at an input node (K1) and to provide an output voltage (V3) at an output node (K3), wherein the amplifier (110) comprises a plurality M, with M ≥ 2, of current sources (111, 112) comprising at least one charge-controlled current source (112) and a holding capacitor (113) for maintaining the level of the provided output voltage (V3), and a buffer coupled between the output node (K3) and the control node (K2). (120), which is designed to,to decouple the control node (K2) from the output node (K3) and to provide the control voltage (V2) for the actuator (200) based on the level of the output voltage (V3) of the holding capacitor (113).

The invention relates to the field of server systems, and discloses a server cabinet system, which comprises a real-time power monitoring module used for collecting server current data at a frequency of once per second, calculating real-time power and dynamically adjusting power distribution; the intelligent prediction and optimization module is used for predicting future demands and generating an optimal distribution strategy based on the normalized historical power consumption data and load data; and the redundant power supply switching module comprises a main power supply and a standby power supply converted by the lithium battery pack through an inverter, and is used for switching to the standby power supply when the voltage of the main power supply is lower than 180V for 10ms. According to the method, the elastic power supply strategy is generated by fusing the prediction demand and the two-dimensional weight of the service priority, the continuous operation of the core service is ensured, the prior art depends on a single priority label to allocate resources, the burst load and the long-term stability are difficult to balance, and the problem of resource waste caused by separation of the two is solved.

A circuit system includes a circuit board including a plurality of integrated circuit (IC) chips. The circuit board is configured to be immersed in a two-phase cooling fluid. The circuit system includes a controller. The controller is configured to, in a control process: obtain temperature data indicative of respective internal temperatures of the plurality of IC chips, predict respective future internal temperatures of the plurality of IC chips based on the respective internal temperatures, and adjust clock frequencies and power supply voltages of the plurality of the IC chips such that the predicted respective future internal temperatures are within a target temperature range. A clock frequency of a first IC chip of the plurality of IC chips is adjusted to be different from a clock frequency of a second IC chip of the plurality of IC chips.

In one implementation, an apparatus, such as an ESD protection circuit, is disclosed. The apparatus can include a filter coupled between a local supply voltage rail to a supply voltage rail. A switch circuit can be connected in parallel with the filter. The apparatus can include a clamp configured to 1) provide a first ESD shunt path from an input line to the local supply voltage rail and 2) provide a second ESD shunt path from the input line to a lower voltage rail. A second clamp can be configured to provide a third ESD shunt path from the local supply voltage rail to the lower voltage rail. The switch circuit can be configured to close a switch to bypass the filter.

Sensing circuitry for an implantable stimulator device is disclosed. The sensing circuitry includes a downselector with switching networks used to couple selected electrode nodes and / or DC voltages to one or more sense amps. The switching networks comprise high-voltage devices that are controlled in accordance with a high-voltage power supply voltage VH. VH may be generated by a boost circuit, and may be set to the higher of a boosted voltage and a compliance voltage that powers the stimulation circuitry. The switching networks include three switches, some of which may comprise transfer gates. The downselector can be controlled to couple one or more electrodes nodes to a particular sense amp during sensing durations. The downselector can also be controlled during stimulation durations to couple one or more electrodes nodes together, thus supplementing operation of the stimulation circuitry.

Voltage command values are set according to voltage fluctuations of a plurality of power supply sources, and one of outputs from a plurality of power supply circuits which output DC voltages obtained by performing conversion according to the voltage command values is supplied to a power conversion circuit as control power so that the system can be continuously operated even at the time of an abnormality due to a device failure and a power outage, and control power consumption can be suppressed in the case of voltage fluctuations of the power supply sources.

The invention provides a clock input buffer and electronic equipment. The clock input buffer comprises a multi-protocol input circuit, a level conversion circuit, a step-down circuit and a clock buffer circuit. The multi-protocol input circuit is adjusted to different working modes through a control signal transmitted by the control unit so as to be compatible with various input protocols, the multi-protocol input circuit processes an input signal based on a target working mode, and the level conversion circuit performs level shifting on an output signal of the multi-protocol input circuit so as to realize multi-protocol conversion. The voltage reduction circuit is used for converting the output signal into a low-voltage domain signal so as to meet the working voltage requirement of the clock buffer circuit, and meanwhile, the voltage reduction circuit is used for reducing the power supply voltage so as to provide low-voltage power supply voltage for the clock buffer circuit; therefore, the clock buffer circuit can buffer high-speed signals in different input protocols and voltage ranges by using a low-voltage domain device, and the application scenarios of the clock input buffer are greatly expanded.

The invention discloses a method for automatically adjusting the riveting stroke of a rivet-free rivet, relates to the technical field of riveting, and is used for solving the problem of riveting precision deviation. The method comprises the following steps: firstly, determining a theoretical stop position through simulation analysis and experimental data, and establishing a process reference according to a riveting process and material characteristics; secondly, in the production process, the riveting stop position, the environment temperature, the power supply voltage and vibration data of the workpiece are collected in real time; environmental interference is eliminated through a multi-factor correction method, deviation is calculated and compared with theoretical parameters, and dynamic compensation is formed. In order to cope with long-term wear and mounting environment change, the invention also calculates wear correction and geological correction through regression analysis and neural network methods in combination with wear data, load history, geological environment and other information, and dynamically adjusts the riveting stroke according to the corrected deviation. Finally, through real-time feedback and closed-loop control, the riveting process is optimized, accurate riveting positioning is achieved, and the production efficiency and the product quality are improved.

A display device including: a display panel including a plurality of pixels; and a panel driver connected to the display panel, the panel driver configured to generate stress data representing a degradation amount of the display panel, to generate corrected image data by adjusting input image data based on the stress data, to determine a luminance of the display panel based on a display brightness value or the corrected image data, to adjust a second power supply voltage based on the stress data and the luminance of the display panel, and to drive the display panel based on the corrected image data, a first power supply voltage and the second power supply voltage.

The invention relates to the technical field of industrial big data, in particular to a transformer consumption reduction intelligent control method and system based on a power generation end, and the method comprises the steps: building a source-load space-time correlated industrial big data set, determining an operation reference, and synchronously monitoring real-time electrical parameters; load component decoupling is executed, a basic load component is stripped, and a power fluctuation deviation parameter is extracted; reconstructing equivalent control power of a power generation end based on a nonlinear fluctuation compensation strategy; and constructing a power grid energy efficiency function to execute loss minimization optimization, determining a power supply voltage setting value and driving on-load voltage regulation. Through multi-dimensional data fusion and non-linear load reconstruction, the problem that a traditional method is difficult to deal with random fluctuation of the load is solved, collaborative optimization of transformer loss and line transmission loss is achieved, and operation energy consumption of a power supply loop of a power generation end is effectively reduced.

The present invention discloses a commercial soda water intelligent mixing device, which specifically relates to the technical field of soda water preparation, and includes a bracket. The present invention provides a controller, a water pump, a soda water mixing nozzle, and a carbon dioxide inlet, so that water is pumped out through the water pump, and the original water flow is converted into water mist through the soda water mixing nozzle, and then carbon dioxide is introduced through the carbon dioxide inlet at the same time to react and generate soda water, so that the efficiency and effect of preparing soda water are better and the reaction of carbon dioxide and water is more complete. An evaluation coefficient of the device is established by collecting a water pressure difference coefficient, a water outlet deviation coefficient, and a power supply voltage instability coefficient, and the evaluation coefficient is compared with an evaluation coefficient threshold to determine whether the soda water prepared by the mixing device meets the merchant's expectations. If the evaluation coefficient is greater than the evaluation coefficient threshold, it is proved that the soda water produced by the mixing device at this time does not meet the merchant's expectations, and the working state of the mixing device needs to be stopped in time.

The utility model relates to the technical field of energy storage power supplies, and mainly provides a direct-current power supply fault latch circuit and an energy storage system, the circuit comprises a switch module connected with a battery and a direct-current power supply, a latch module connected with the switch module, and a sampling resistor connected with the latch module, and the sampling resistor is also connected with the negative electrode of the battery and the negative electrode of the direct-current power supply. The switch module is also used for receiving the driving signal. The sampling resistor outputs a sampling voltage to the latch module according to the output current of the cathode of the DC power supply. The latch module is used for controlling the switch module to start working according to the driving signal when the sampling voltage is smaller than the preset voltage so as to output the power supply voltage of the battery to the direct-current power supply; and when the sampling voltage is greater than the preset voltage, it is considered that an overcurrent short circuit fault occurs, and at the moment, a turn-off signal is continuously output to the switch module to close the switch module and lock the closed state, so that output of the power supply voltage is stopped, and the service life of the energy storage system is prolonged while the energy storage system is protected.

The invention discloses a load insertion detection circuit, a control method thereof and a multi-port charger, and belongs to the technical field of multi-port charging. The load insertion detection circuit comprises a comparison unit, a first input end is connected with a load access node, a second input end is used for accessing a reference voltage, and the comparison unit outputs a first signal when the voltage of the first input end is greater than the voltage of the second input end; each pull-up circuit comprises a switch and a resistor which are connected in series, the first end of each pull-up circuit is electrically connected with the same power supply voltage node, the second end of each pull-up circuit is electrically connected with the load access node, and the resistance values of the resistors are different; the control circuit is electrically connected with the driving end of each switch and the output end of the comparison unit, the control circuit controls the corresponding switches to be switched on according to the sequence that the resistance values of the resistors are decreased progressively until the comparison unit outputs the first signal, the switching-on state of the switch which is switched on currently is maintained, load insertion detection is carried out, the detection range is enlarged, and the anti-interference performance is improved.

Disclosed is a reset semiconductor integrated circuit that outputs a reset signal in response to a power supply voltage of a monitoring target becoming lower than a predetermined level, the reset semiconductor integrated circuit including: a voltage detection circuit; an output stage including a CMOS circuit that generates and outputs a signal according to a detection result of the voltage detection circuit; a monitored voltage input terminal to which the power supply voltage of the monitoring target is input; a reference potential terminal to which a voltage as a reference potential of a circuit is applied; an external voltage terminal which is connected to a power supply voltage terminal of the output stage to allow a power supply voltage as an operation voltage of the output stage to be applied from outside; and an output terminal to output the signal generated by the output stage.

An apparatus includes a transmitter, a voltage regulator, an isolator, and a test controller. The transmitter has an input, an output, and a first supply voltage terminal. The input couples to the apparatus' input terminal. The voltage regulator's input couples to a second supply voltage terminal. The voltage regulator's output couples to the first supply terminal. The first terminal of the isolator couples to the output of the transmitter. A first test controller terminal couples to the second supply voltage terminal. A second test controller terminal couples to the input terminal of the apparatus. The first control output couples to the control input of the voltage regulator. The test controller changes a logic state of a control signal at the first control output from a first logic state to a second logic state.

The invention provides a voltage control circuit and a display device.The voltage control circuit comprises a first switch circuit, a power-on reset circuit, a comparison circuit and a switch control circuit, the power-on reset circuit correspondingly outputs a third level signal or a fourth level signal during power-on or power-off, the comparison circuit compares power supply voltages, and the switch control circuit controls the first switch circuit and the second switch circuit. The switch control circuit correspondingly controls the on-off of the first switch circuit based on the level signals output by the power-on reset circuit and the comparison circuit, and the power-off voltage can be detected through the cooperation of the power-on reset circuit, the comparison circuit and the switch control circuit. When voltage rebound occurs in the power-down process, the first switching circuit can be effectively kept switched off, and abnormal restart of the power management integrated circuit is prevented, so that the problem of picture abnormity or splash screen caused by abnormal power-on of the display panel is effectively prevented, and the display quality and the user experience of the display device are improved.

A pixel driving circuit includes a driving sub-circuit and a control sub-circuit. The driving sub-circuit is coupled to a data signal terminal, a scan signal terminal, a first power supply voltage terminal, an enable signal control terminal and an element to be driven, and the driving sub-circuit is configured to, in response to an enable signal, transmit a generated driving signal to the element to be driven, and control a current path transmitting the driving signal to be turned on and off. The control sub-circuit is coupled to the enable signal control terminal, and the control sub-circuit is configured to, in response to a signal received at the control signal terminal, transmit a signal received at a first enable signal terminal or a signal received at a second enable signal terminal to the enable signal control terminal.

The invention discloses a line diagnosis method and circuit, and the method and circuit are used for a data communication system, and the method comprises the steps: detecting a first current on a high-side switching tube and / or a second current on a low-side switching tube; judging the states of the high-side switch tube and the low-side switch tube based on the detection result; and judging whether open circuit and short circuit exist at the line positive end and the line negative end and whether short circuit exists between the line positive end and the line negative end and the power supply voltage and the ground voltage based on the states of the high-side switch tube and the low-side switch tube. According to the line diagnosis method and the diagnosis circuit, the accuracy of fault diagnosis in the bus power supply and power-on process can be improved, false report and missing report of faults are reduced, and chip and line burnout caused by long-time overcurrent is avoided; by means of fault detection of the communication state, the line fault diagnosis precision in bus power supply communication is improved, false alarms and missing alarms are reduced, and overcurrent is avoided.

The invention provides an automatic frequency locking circuit based on a time-to-voltage converter and a phase-locked loop, and relates to the technical field of phase-locked loops, a first frequency-halving unit and a second frequency-halving unit respectively carry out frequency-halving processing on a reference signal and a frequency division signal of a current comparison period to obtain a first square wave signal and a second square wave signal; the first square wave signal and the second square wave signal are transmitted to the time-to-voltage converter; the time voltage converter comprises a phase generation unit, a first charge pump and a second charge pump, the phase generation unit generates an enable signal according to the first square wave signal and the second square wave signal, and the first charge pump and the second charge pump respond to control of the enable signal and collect single pulse signals from the first square wave signal and the second square wave signal respectively so as to supply power to the input end of the comparator; the comparator compares power supply voltages of the two input ends to achieve frequency comparison of the reference signal and the frequency division signal. And selection in a plurality of phase signals is not needed, and required digital circuit modules are reduced, so that the delay of the reference signal and the frequency division signal in the conversion process is reduced.