1166 results about "Sampling circuits" patented technology

The invention discloses an LLC-DCDC fault protection method and device based on resonance current and pulse integration. The method comprises the following steps that an alternating current signal on an LLC converter resonance inductor is collected in real time through a resonance inductor current sampling circuit; inputting the current signal into a hardware comparator module, comparing the current signal with a preset current threshold value, and outputting a pulse signal; inputting the pulse signal into a pulse integral module for integral processing, and outputting an integral voltage signal; the CPU control unit receives a pulse signal output by the hardware comparator and an integral voltage signal output by the integral module in real time, and judges whether a fault occurs or not according to preset logic; and if the fault is judged, the driving signal of the primary inverter bridge of the LLC converter is cut off through the driving cut-off module.

The invention relates to the technical field of gas detection, in particular to a detection circuit based on an NTC thermistor and a heat conduction meter. The detection circuit based on the NTC thermistor comprises a main NTC thermistor which is suspended in air flow; the constant current source circuit is used for providing constant working current for the main NTC thermistor; the detection resistor is arranged between the main NTC thermistor and a ground node; the ADC sampling circuit is used for sampling analog voltages at two ends of the detection resistor into digital signals; the constant temperature adjusting circuit is used for controlling the magnitude of the current output by the constant current source circuit according to the voltage of the main NTC thermistor, so that the main NTC thermistor is kept at the target temperature; the temperature compensation circuit is used for detecting the temperature of the environment where the heat conduction measuring meter is located; and the processing unit is used for determining a detection result according to the digital signal and compensating the detection result according to the environment temperature. According to the detection circuit based on the NTC thermistor, the response speed and the measurement precision of measurement are improved.

The invention discloses a frequency converter multi-stage cooperative rapid overcurrent protection circuit, and the overcurrent protection circuit cooperates with an IGBT inverter circuit, an IGBT drive circuit, a current sampling circuit and a master control MCU of a frequency converter to construct a three-stage cooperative protection system composed of hardware-stage extreme rapid protection, hardware-stage rapid protection and software-stage intelligent protection. And independent action and information interaction between the stages can be realized through circuit design. Compared with the prior art, protection blind areas are eliminated, nanosecond-microsecond level extreme protection is achieved, a multiple and high-reliability redundancy protection system is constructed, intelligent grading processing of faults is achieved, and the diagnosability of the system is enhanced.

The invention provides a relay zero-crossing time-delay calibration circuit and electrical equipment. The relay zero-crossing time-delay calibration circuit comprises a sampling circuit, a comparison module, a logic circuit and an output interface used for an external control equipment port, the sampling circuit is respectively connected with a static contact and a movable contact of the relay and is used for sampling voltage values of the static contact and the movable contact of the relay, outputting the voltage value of the static contact through a first output end of the sampling circuit and outputting the voltage value of the movable contact through a second output end of the sampling circuit; the comparison module is respectively connected with the first output end and the second output end, and the output end is connected with the logic circuit; the comparison module is used for outputting an effective driving signal to the logic circuit under the condition that the static contact voltage value is equal to the movable contact voltage value; and the logic circuit is connected with the output interface and is used for pulling up or pulling down the potential of the output interface when the effective driving signal is received.

The invention discloses a broadband low-power-consumption receiving and transmitting shared phase shifter which comprises a differential signal common port, a frequency sampling and control circuit, a dual-mode orthogonal generation circuit and a passive vector modulation synthesis circuit. The differential signal common port comprises a common input / output port interface of RF + and RF-differential radio frequency signals; the frequency sampling and control circuit is composed of a frequency sampling circuit, a frequency detection circuit and a logic control unit. The dual-mode orthogonal generation circuit is composed of a frequency selection change-over switch, a multi-phase filter, a coupling transformer, a matching network 1 and a matching network 2. The passive vector modulation synthesis circuit is composed of two passive vector modulation arrays and two combining / power dividing circuits.

The invention provides a charge pump circuit and a chip, in the charge pump circuit, a sampling circuit, a feedback circuit and a clock generation circuit are sequentially coupled and are coupled with a first charge pump and a second charge pump to form a loop, and in the initial stage of establishing the output of the charge pump circuit, the sampling circuit is used for carrying out primary charging on the output end of the charge pump circuit; when the input voltage rises to a corresponding value, the first charge pump and the second charge pump work at the same time, and when the voltage of the output end of the charge pump circuit reaches a target value, one of the first charge pump and the second charge pump stops working, so that the power consumption of the charge pump circuit in a steady state is effectively reduced; sectional charging and self-adaptive adjustment of a working mode are realized, and the vast majority of charging processes in an output establishment stage are completed by using an input voltage, so that the load pressure in the charge pump circuit is reduced. In addition, the sampling circuit also realizes parallel voltage sampling and ripple sampling, and the transient response capability of the charge pump circuit is enhanced.

The utility model belongs to the technical field of power distribution, and particularly relates to a power distribution device, a battery device and a power utilization device, the power distribution device comprises a first circuit board, a second circuit board and a flexible electric connector, the first circuit board comprises a first board body and a first electric connector arranged on the first board body, and the first board body is electrically connected with the first electric connector; the second circuit board comprises a second board body and a second electric connecting piece arranged on the second board body, and the second board body is electrically connected with the second electric connecting piece; the first circuit board is a battery control board, and the second circuit board is a battery monomer sampling circuit board; the two ends of the flexible electric connecting piece are electrically connected with the first electric connecting piece and the second electric connecting piece respectively, and bending deformation of the flexible electric connecting piece can make up for installation errors of the first circuit board, the second circuit board, the first electric connecting piece or the second electric connecting piece. Therefore, the flexible electric connecting piece can be electrically connected with the first electric connecting piece and the second electric connecting piece stably and reliably, and the use reliability of the power distribution device can be improved.

The present application relates to a charging pile fault detection circuit and a charging gun. In the charging pile fault detection circuit, an input end of a first switch is connected to an input end of the charging gun, an input end of an equivalent analog resistor is connected to an output end of the first switch, and an output end of the equivalent analog resistor is connected to an output end of the charging gun; an on-off state of the second switch is different from an on-off state of the first switch; a preset resistor and the second switch are connected in series between the input end of the charging gun and the equivalent analog resistor; and a sampling circuit is configured to sample an electrical signal applied to the equivalent analog resistor, wherein the electrical signal represents a fault condition of the charging pile. Thus, accurate fault detection of the charging pile is realized.

The invention discloses a fractional frequency division frequency synthesizer with output signal phase synchronization and frequency modulation continuous wave functions, and the basic structure is a charge pump phase-locked loop. Comprising a phase frequency detector, a first charge pump, a second charge pump, a low-pass filter, a voltage-controlled oscillator, a first buffer, a second buffer, a two-frequency divider chain, an IQ undersampling circuit, a local oscillator generator, a programmable multimode frequency divider, a Delta-Sigma modulator (DSM), a first selector, a second selector, a third selector, a tracking phase accumulator, a numerical control oscillator, an accumulation phase difference register and an atan2 logic circuit. The device comprises a main phase control circuit, a phase adjusting circuit, an enabling control circuit, a waveform generator and a serial peripheral interface. The decimal frequency-division frequency synthesizer can be applied to a general-inductance integrated system, ensures that output signals provided by a plurality of decimal frequency-division frequency synthesizers are consistent in phase in a multi-channel radio frequency transceiving system adopting a multi-chip splicing mode, and can also be applied to the general-inductance integrated system as a sensing signal source; and the speed and the distance of an object can be quickly sensed by the high linearity and the quick chirp capability of an output signal. The decimal frequency division frequency synthesizer is applied to a linear frequency modulation continuous wave radar system, initial phase synchronization can be carried out firstly, then frequency continuous modulation is carried out, and measurement errors can be eliminated. In view of functional similarity of partial modules of the synchronous loop and the FMCW loop, such as a phase frequency detector, a charge pump, a voltage-controlled oscillator and the like, the modules can be shared, so that the power consumption and area cost of the system are remarkably reduced.

The invention relates to the technical field of power fault detection, and mainly relates to a residual voltage detection circuit and a line protection device.The residual voltage detection circuit comprises a sampling circuit and a signal holding circuit, the signal holding circuit adopts double coils and comprises a first coil and a second coil, and a loop where the first coil is located is provided with a first controllable switch tube in series; the first controllable switch tube is connected when the sampling circuit collects residual voltage, a second controllable switch tube is arranged in a loop where the second coil is located in series, the control end of the second controllable switch tube is used for being connected with a feeder terminal, and the signal holding circuit further comprises a residual voltage output branch used for being connected with the feeder terminal. The residual voltage output branch is provided with a first contact of the double coils in series. A sampling circuit is used for obtaining a residual voltage signal generated at the moment of closing of a faulty power grid line, and a signal holding circuit formed by double coils is used for transmitting a sampling signal to a feeder terminal, so that the feeder terminal can still receive the residual voltage signal when the feeder terminal loses power after power supply is recovered.

The invention discloses a high-side driving circuit, an electronic device, a vehicle and a control method. False triggering of a short-circuit protection mechanism is avoided. The high-side driving circuit comprises a power distribution circuit, a sampling circuit and a fault protection circuit, the power distribution circuit comprises a PMOS transistor and a first resistance circuit; the grid electrode of the PMOS tube is grounded through the first resistance circuit, the drain electrode of the PMOS tube is connected with a load, and the source electrode of the PMOS tube and the input end of the fault protection circuit are connected with a power supply; the output end of the fault protection circuit is connected with the grid electrode of the PMOS tube; the sampling circuit is connected with the drain electrode of the PMOS tube and the ground; the output end of the sampling circuit and the control end of the fault protection circuit are connected to the control unit; the control unit judges whether load short circuit occurs or not according to the sampling voltage, if not, the fault protection circuit is forbidden to output voltage, and if yes, the fault protection circuit is controlled to convert input voltage into target voltage to be output; the PMOS tube is in a variable resistance region when the fault protection circuit has no voltage output, and enters a cut-off region when the PMOS tube outputs a target voltage.

The embodiment of the invention discloses an adjustable constant current source power control circuit, which is used for controlling the power of an adjustable constant current power supply and comprises a voltage sampling circuit, a divider circuit and a voltage selection circuit, the voltage sampling circuit is connected with the adjustable constant current source and is used for acquiring a first voltage from the adjustable constant current source according to a preset proportionality coefficient; the divider circuit is connected with the voltage sampling circuit and is used for calculating and dividing according to a preset reference voltage and the first voltage to obtain a second voltage; the voltage selection circuit is formed by connecting a first voltage follower and a second voltage follower in parallel, the first voltage follower is connected with the divider circuit and used for following a second voltage, the second voltage follower is used for following a third voltage, and the third voltage is determined according to a preset value; a selective switch is formed between the first voltage follower and the second voltage follower, and the selective switch is used for selecting the output of the first voltage follower or the output of the second voltage follower to be connected to the adjustable constant current source. According to the technical scheme provided by the invention, tedious designs of other circuits such as a PWM pulse width detection circuit and a maximum pulse limiting circuit are omitted, and the circuit has the characteristics of simplicity and high efficiency.

The invention provides an electrostatic powder coating airflow stability real-time compensation method, and relates to the technical field of powder coating control, the method is realized based on an electrostatic powder coating airflow stability real-time compensation device, the device comprises a master control MCU, a pneumatic control valve, a stepping motor driver for driving the pneumatic control valve, and a current sampling circuit coupled to the stepping motor driver, the current collector is used for collecting winding current of the stepping motor in real time. The method comprises the following steps that after a pneumatic control valve is opened to a target opening degree and enters a holding state, a static holding current value of the pneumatic control valve is obtained; comparing the static holding current value with a preset reference holding current value, wherein the preset reference holding current value corresponds to the holding current required by the target opening degree under the smooth state of the airflow channel; according to the offset of the static holding current value relative to the reference holding current value, whether the airflow channel has a blocking trend or not is judged; if not, the current target opening degree of the pneumatic control valve is maintained, the airflow state change can be more directly sensed, and real-time active compensation is carried out.

The invention relates to the technical field of photoelectric tube detection, in particular to a photoelectric tube high-voltage excitation type solar blind ultraviolet discharge detection method and system, and the method comprises the steps: obtaining original voltage sequence data collected by a high-speed transimpedance sampling circuit in real time; positioning feature points of each suspected pulse according to the original voltage sequence data, and extracting pulse waveform features; obtaining a physical confidence factor of each suspected pulse according to the falling edge attenuation characteristics; calculating effective discharge energy flow in unit time based on the physical confidence factor; calculating a discharge stability coefficient according to a coupling relationship between the time correlation entropy and the effective discharge energy flow; according to the method, a scheme from microscopic physical judgment, waveform form deconstruction and time law analysis to multi-dimensional trend prediction is constructed, so that the contradiction between the detection sensitivity and the quantification precision is solved; and adaptive tracking monitoring of the partial discharge process is realized.

The invention discloses a rapid soft start control method and device for a switching power supply. The method comprises the following steps: determining a target voltage output by a soft start preprocessing circuit in a steady state according to a preset standard voltage, a preset standard current and a load resistance value of a resistive load; determining a target duty ratio corresponding to a switching tube of the soft start preprocessing circuit in a steady state according to the target voltage and a preset input voltage of the switching power supply; a first control signal is sent to the pulse width modulation circuit, and the duty ratio of the switching tube is adjusted to the maximum duty ratio; monitoring that the real-time output voltage of the soft start preprocessing circuit is increased to the target voltage through a voltage sampling circuit; and a second control signal is sent to the pulse width modulation circuit, and the duty ratio of the switching tube is adjusted from the maximum duty ratio to the target duty ratio, so that rapid soft start of the switching power supply is realized and a steady state is reached. According to the invention, the soft start time of the switching power supply can be obviously shortened, and the switching power supply can rapidly reach a stable working state after soft start.

A control circuit includes: an input sampling circuit, configured to perform sampling processing on an initial command address signal based on a first clock signal to generate an intermediate command address signal; a gating generation circuit, configured to generate a first gating enable signal based on the intermediate command address signal and perform pulse width adjustment on the first gating enable signal based on a reset signal to generate a first gating signal; and a clock control circuit, configured to perform control processing on a second clock signal based on the first gating signal to generate a command clock signal. There is an association relationship between the level state of the first gating enable signal and the intermediate command address signal.

The piezoelectric ceramic actuator displacement estimation system, the system and the terminal provided by the application comprise a controller, a power amplifier, a piezoelectric ceramic actuator and a charge storage element connected in series, and both ends of the piezoelectric ceramic actuator are connected with a voltage sampling circuit, the above method and system combine software and hardware, design a sensorless displacement estimation circuit and a displacement estimation algorithm containing real-time disturbance observation compensation, design a corresponding compensation circuit for charge leakage effect, realize long-term high-precision and stable piezoelectric ceramic displacement estimation, and can provide the piezoelectric ceramic controller as a displacement feedback signal, the method is simple to implement, the effect is obvious, and has obvious superiority, through the method, the piezoelectric ceramic can realize displacement sensing while being used as a displacement actuator and does not depend on a sensor, and is suitable for piezoelectric ceramic high-precision positioning and control scenes in a compact assembly environment where external sensors cannot be integrated.

A monitoring circuit and method for turn-off resistance of a power semiconductor device, the monitoring circuit comprising: a voltage boosting circuit unit, a logic operation unit, and a sampling circuit unit; the voltage boosting circuit unit is connected with a main circuit comprising the power semiconductor device to be tested; the logic operation unit is connected with the sampling circuit unit and the main circuit of the power semiconductor device to be tested respectively. Under the operating environment of the voltage boosting circuit unit, the voltage of the power semiconductor device to be tested in series with a sampling resistor R 1 and the voltage of a voltage dividing network are taken as characteristic monitoring parameters, a hardware protection judgment mechanism is established, the voltage values are compared with preset safety thresholds, when any parameter exceeds the safety threshold, a latch A2 is triggered and the state is latched, and then the voltage of the sampling resistor R 1 is extracted by the sampling circuit unit. The method has the characteristics of fast response, strong anti-noise ability, and high measurement accuracy, and is suitable for monitoring and reliability evaluation of turn-off resistance of a power semiconductor device.

The utility model provides a motor current sampling circuit based on an operational amplifier, an electronic controller and a new energy automobile, and relates to the technical field of electronic circuits, and the motor current sampling circuit comprises a sampling resistor which is connected in series in a power supply loop of a motor and is used for converting a current signal of the motor into a voltage signal; the first operational amplifier circuit is used for amplifying the voltage signal to obtain an amplified voltage signal; and the filter circuit is used for filtering the amplified voltage signal to obtain a ripple signal, and sending the ripple signal to the second operational amplifier circuit for amplification to obtain an amplified ripple signal for the single-chip microcomputer to identify. The beneficial effects are that the motor current is subjected to direct current and alternating current separation and filtering processing through the hardware circuit, and then is amplified through the second operational amplifier circuit, so that the single-chip microcomputer can easily identify current ripples under the condition of weak performance, the performance requirement on the single-chip microcomputer is greatly reduced, and the motor current can be well, stably and reliably identified; and the product competitiveness is greatly improved.

The invention provides an output circuit and a fault diagnosis method, and relates to the technical field of circuit detection, the circuit comprises a digital quantity output circuit and N analog quantity output circuits, and N is a positive integer; the analog quantity output circuit is arranged at the preceding stage of the digital quantity output circuit; the analog quantity output circuit at least comprises a control circuit and a sampling circuit. The sampling circuit is used for sampling the output current of the analog quantity output circuit and the output voltage of the digital quantity output circuit; the digital quantity output circuit at least comprises a peripheral circuit and switching circuits matched with the analog quantity output circuits in number, and each analog quantity output circuit is at least matched with one switching circuit; the control circuit is used for judging the line fault state of the digital quantity output circuit according to the output current of the analog quantity output circuit and judging the device fault state of the digital quantity output circuit according to the output voltage of the digital quantity output circuit and the switching state of the switching circuit. Line faults and device failures of the digital quantity signal output circuit can be diagnosed.

A battery pack includes a housing; a cell assembly including n cell units connected in series; a sampling circuit including n sampling terminals connected to the n cell units in one-to-one correspondence; and a processor electrically connected to the sampling circuit and used for monitoring the state of the cell assembly. The processor is configured to, when receiving a sampling instruction, sample the n sampling terminals to acquire pieces of sampling data and determine the voltages of the n cell units or the voltage of the battery pack based on the pieces of sampling data. The sampling time interval t1 between two adjacent samplings has a value range of 10 μs≤t1≤50 μs.

The present invention discloses a power supply and a control method thereof. The power supply comprises a power conversion unit, a current sampling circuit, and a signal comparison unit. The power conversion unit converts a power source based on an input power source, generates an output current, has a power source output terminal, and outputs the output current from the power source output terminal. The current sampling circuit samples a transient variation of the output current and to generate an output voltage difference signal corresponding to the transient variation. The signal comparison unit is electrically connected to the current sampling circuit, receives the output voltage difference signal, and compares the output voltage difference signal with a predetermined voltage value. When the output voltage difference signal is greater than or equal to the predetermined voltage value, the signal comparison unit generates a dynamic compensating command.

The invention relates to a brushless motor drive circuit, in particular to a brushless motor control drive circuit with high withstand voltage isolation strength, which comprises a control circuit for receiving and processing voltage signals fed back by a sampling circuit and a detection circuit and outputting control signals to the drive circuit; the driving circuit outputs a driving signal under the action of the control signal so as to drive the brushless motor to commutate or start and stop; the sampling circuit detects a current signal when the driving circuit works, converts the current signal into a first voltage signal and sends the first voltage signal to the control circuit, so that the control circuit monitors the three-phase current of the brushless motor in real time; the detection circuit is used for detecting a Hall signal of the brushless motor with a Hall sensor, converting the phase change state of the brushless motor into a second voltage signal and sending the second voltage signal to the control circuit, so that the control circuit can detect the position of the rotor in real time; according to the technical scheme, the defects that in the prior art, environment adaptability is poor, and precise driving of the brushless motor is difficult to achieve can be overcome.

The utility model discloses a temperature detection circuit and a charging pile, and relates to the technical field of charging pile control, the temperature detection circuit comprises a temperature sampling circuit, a temperature rise slope detection circuit, a comparison circuit and a control circuit, the input end of the temperature rise slope detection circuit is electrically connected with the output end of the temperature sampling circuit; the input end of the comparison circuit is electrically connected with the output end of the temperature rise slope detection circuit; the input end of the control circuit is electrically connected with the output end of the comparison circuit, and the control end of the control circuit is electrically connected with the charging switch circuit; and when the control circuit determines that the temperature of the charging gun is in an over-temperature fault state according to the comparison result, a turn-off control signal is output to the charging switch circuit so as to disconnect an electric connection path between the charging module and the charging gun. By detecting the temperature rising slope of the charging gun, measures are taken in time before the temperature reaches the maximum safe temperature threshold value, and therefore potential safety hazards or the risk of equipment damage caused by sudden temperature rising are improved.

Embodiments of the present disclosure provide a leakage compensation circuit, a chip and an electronic device, and belong to the technical field of integrated circuits. The leakage compensation circuit comprises an output stage circuit, a first sampling circuit, an operational amplifier circuit and a second sampling circuit. The operational amplifier circuit comprises an operational amplifier output stage circuit and an operational amplifier first stage circuit which are coupled to each other. The first sampling circuit samples the leakage current of the output stage circuit to obtain a first sampling current, and provides the first sampling current to the operational amplifier output stage circuit through a first node. The second sampling circuit samples the current of the operational amplifier output stage circuit to obtain a second sampling current, and provides the second sampling current to the output stage circuit through a second node to compensate for the leakage current of the output stage circuit. The operational amplifier first stage circuit clamps the voltage of the first node and the second node.

The utility model discloses a circuit for reducing standby power consumption, which is used for reducing the standby power consumption of a charger and comprises a voltage sampling circuit, a voltage feedback circuit and a pulse width control circuit, and the voltage sampling circuit is connected between the voltage feedback circuit and the pulse width control circuit. The pulse width control circuit is provided with a pulse width signal receiving end used for being connected with a PWM signal output pin of an MCU of the charger; and the voltage sampling circuit is connected to a reference potential of a controller in the voltage feedback circuit through central nodes of an upper bias resistor and a lower bias resistor of the voltage sampling circuit.

The application discloses a kind of LDO circuits, including operational amplifier, voltage division sampling circuit and power tube that are electrically connected with each other, wherein, it further includes an overshoot adjusting circuit, which is connected with operational amplifier, including capacitor, first MOS tube, second MOS tube and first mirror unit, one end of capacitor is connected with power supply, the other end is connected with the grid of first MOS tube, first mirror unit is commonly connected, the source and drain of first MOS tube are connected with operational amplifier, the source of second MOS tube is connected with power supply, an external voltage is input to the grid of second MOS tube, the drain of second MOS tube is connected with first mirror unit, and first mirror unit mirrors the current on the circuit of second MOS tube to the circuit on capacitor.The LDO circuit of the application smoothly solves the problem of overshoot of output voltage during power-on process, prevents the damage of circuit device due to voltage overshoot during operation, and improves the reliability of the entire circuit.

The present application provides a power supply device compatible with AC / DC input and a control method thereof, the device comprising a power factor correction circuit, a direct current-to-direct current (DC / DC) circuit, a bypass circuit, an input sampling circuit, and a controller. The power factor correction circuit is connected to the DC / DC circuit. The bypass circuit is connected to a boost circuit input end of the power factor correction circuit and an input end of the DC / DC circuit. The controller is connected to the input sampling circuit and the power factor correction circuit respectively, for controlling the power factor correction circuit to stabilize the output voltage within a preset range according to an input signal collected by the input sampling circuit, or turning off the power factor correction circuit and providing power for the DC / DC circuit via the bypass circuit.

This application discloses a Gaussian distribution sampling circuit, method, electronic device, and readable storage medium. The Gaussian distribution sampling circuit includes a pre-sampling module and a sampling correction module. The pre-sampling module is used to look up the most significant bit of the input random number in an inverse cumulative distribution table to determine an approximate probability value. The sampling correction module is used to fine-tune the approximate probability value based on the comparison result between the approximate probability value and the random number to obtain a sampled value. Through the above modules, the most significant bit distribution characteristics of the inverse cumulative distribution table are used to map the most significant bit of the random number to a smaller set of candidate intervals to obtain an approximate probability value. Since there are only a few approximate probability values, only a few large-bit-width comparators are required, which can significantly reduce the dependence on large-bit-width comparators, reduce hardware resource consumption, and ensure that sampling is completed once per clock cycle, maintaining high throughput and constant time characteristics.

The invention relates to the technical field of oil-submerged pumps, and provides an oil-submerged pump variable frequency drive circuit, a drive method and an oil-submerged pump system.The oil-submerged pump drive method comprises the steps that in response to a first current event and a second current event of a power loop of a motor drive circuit, first trigger time and second trigger time are collected through a sampling circuit; wherein the first current event indicates that the current reaches a preset first threshold value, the second current event indicates that the current reaches a preset second threshold value, the first trigger time is the trigger time of the first current event, and the second trigger time is the trigger time of the second current event; determining an oil-submerged pump driving mode based on the first triggering time and the second triggering time; wherein the oil-submerged pump driving mode is used for controlling an oil-submerged pump. According to the oil-submerged pump driving method provided by the invention, the problem of insufficient scene adaptability possibly caused by driving the oil-submerged pump in a single fixed operation mode in the prior art can be improved.