71 results about "Digital potentiometer" patented technology

The invention provides a power supply regulating device and a voltage-adjustable power supply circuit thereof, and relates to the technical field of power supply regulation, the circuit is additionally provided with a sampling resistor, an operational amplifier unit and an MCU on the basis of keeping the original sampling partial voltage, and adjustable analog level output by the MCU is injected into a DC-DC feedback pin after being subjected to operational amplifier gain, so that the voltage-adjustable power supply circuit is formed. The potential of a feedback node is biased in a voltage superposition mode, so that the output voltage and the analog level are in an approximately linear relation; according to the invention, higher resolution adjustment can be obtained in a preset full range only by changing the DAC level or the PWM duty ratio, the gear intervals are uniform, digital potentiometers or segmented switching are not needed, the calculation is simple, the hardware cost is low, and the control is convenient. The high-precision power supply can be widely applied to occasions requiring a software controllable high-precision power supply, such as a thermal printing head test fixture, ink-jet head ink quantity control, motor torque adjustment and the like. The invention aims to solve the problems that the resolution of a low-voltage section is suddenly reduced and the fineness is insufficient due to resistance-voltage nonlinearity during wide-range voltage regulation of a traditional digital potentiometer type DC-DC feedback network.

The invention provides a wide dynamic range methane detection system based on synchronous accumulation and system reconstruction. The device is characterized by comprising a modulated laser (1), a gas absorption cell (2), a photoelectric detector (APD) (3), a variable gain trans-impedance amplifier (TIA) (4) based on a digital potentiometer, a dual-threshold voltage comparator circuit (5) and a microcontroller processing unit (6). The device can be used for large-dynamic-range real-time monitoring of the methane gas concentration, and the problem that a traditional TDLAS system is prone to saturation or limited in detection limit when the concentration span is large is effectively solved. The method can be widely applied to the fields of gas concentration detection, industrial safety control and the like.

A Peripheral Nerve Stimulation (PNS) system and method are disclosed. The system includes a headset with ear hooks and electrodes for placement on the mastoid processes. A stimulation device connected to the headset via lead wires delivers a pulsed electrical current to the electrodes. The device communicates with a computing device equipped with a mobile application that controls the stimulation characteristics. The mobile application allows users to adjust settings, monitor progress, and access treatment sessions. The system also includes snap ports for electrode attachment, self-adhesive hydrogel electrodes, and current control mechanisms using a digital potentiometer and waveform generator. The method includes pre- and post-session anxiety rating, personalized treatment based on user inputs, and tracking of physiological biomarkers. The application supports multiple operating systems, secure cloud data storage, and enables data sharing with healthcare providers. The invention provides a comprehensive, customizable, safe solution for managing anxiety and insomnia.

This invention relates to a drive control circuit, its control method, medium, and switching circuit. The control method includes: controlling a power switch to start in an adaptive starting current identification mode; monitoring the starting current of the power switch; determining whether the starting current is within a preset range; and if not, adjusting the resistance of a digital potentiometer to bring the starting current within the preset range. This invention enables the automatic adjustment of the conduction speed of the power devices in the switching circuit based on the state of the downstream power circuit, thereby controlling the circuit's starting current and ensuring safe circuit startup.

The invention provides an over-acceleration protection system of an electric motorcycle. A Hall rotating handle outputs an operation control signal to a vehicle-mounted controller and a first input end of a comparison control circuit; the output end of the speed sensor is connected to the second input end of the comparison control circuit; the power input ends of the first electronic switch and the second electronic switch are connected to the power output end of the motor driving circuit, the power input end of the first electronic switch is connected to the power end of the driving motor, and the power output end of the second electronic switch is connected to the input end of the digital potentiometer. The output end of the digital potentiometer is connected to the power supply end of the driving motor, and the control end of the digital potentiometer is connected to the vehicle-mounted controller; the control input end of the first control circuit is connected to the first control output end of the comparison control circuit, and the first control circuit is used for controlling the on-off of the first electronic switch; the control input end of the second control circuit is connected to the second control output end of the comparison control circuit, the control output end of the second control circuit is used for controlling the on-off of the second electronic switch, and the second control circuit is also used for controlling the on-off of the first electronic switch when the second electronic switch is conducted.

The application relates to a self-enclosed self-adaptive amplitude equalizer. The equalizer comprises an equalization circuit, a tuning branch one and a tuning branch two adopting an electric tuning topological structure, the resistance values of the tuning branch one and the tuning branch two are adjusted to realize continuous slope adjustment of-10 dB to +10 dB in a 300 MHz to 1200 MHz frequency band; a main transmission circuit, an input end RFin and an output end RFout of which are respectively used as an input end and an output end of the equalizer; and the outputs of the tuning branch one and the tuning branch two are connected to a fusion node A on the main transmission circuit; a data acquisition and operation circuit, temperature and amplitude-frequency response data are collected in real time through an MCU microcontroller, and a pre-stored temperature-frequency-compensation lookup table and an aging model are combined to calculate a compensation control signal. The equalization circuit slope is adjusted through SPI control of a digital potentiometer and a varactor, and closed-loop self-correction is realized without manual intervention.

The utility model discloses an intelligent vibration switch circuit, which belongs to the technical field of switch circuits and is characterized in that electronic components adopt a filtering mode and a low-pass and high-pass mode to meet the gain in a wide frequency band range; according to the utility model, the digital potentiometer is adopted to control the gain, so that automatic switching of control channels is realized; a second digital potentiometer is adopted to automatically adjust the change of the phase to obtain the optimal phase; according to the utility model, by reducing the variety of the electronic module, the applicability of the electronic module is improved, and the intelligence of the electronic module is improved; the application applicability of the whole machine is improved; through self-diagnosis, the reliability of the instrument can be conveniently judged, the service life is prolonged, and the production efficiency of products and the rapidness and convenience of automatic maintenance in application are improved.

This utility model provides a high-performance power board, including a power input, a filter circuit, a surge protection circuit, a power conversion module, and a power output module. The power conversion module includes a full-bridge switching circuit and a transformer. The power conversion module has multiple independent outputs. A digital potentiometer is connected to the voltage regulation module of each independent output of the power conversion module, and the value of each independent output of the power conversion module is adjusted based on circuit feedback. This utility model device has the advantages of small size, high stability, and multi-channel adjustable output.

The application belongs to the technical field of integrated circuits, and specifically discloses a digital control programmable gain amplifier chip, which adopts an SIP packaged operational amplifier, a digital potentiometer, an input end Vin and an output end Vout, an alternating current signal is input from the Vin end, is connected to the inverting input end of the operational amplifier through a capacitor C1 and an input resistor R1, a positive power supply pin of the operational amplifier is connected to a positive electrode VDD of a power supply, a negative power supply pin is connected to the ground, a same-phase input end obtains a VDD / 2 direct current bias voltage through a precision resistor voltage dividing network and is connected after low-pass filtering, a high end of the digital potentiometer is connected to the Vout end, a low end is connected to the inverting input end of the operational amplifier, and a feedback path is formed through a sliding end. The operational amplifier and the digital potentiometer are integrated, high integration and modularization of the programmable gain amplification circuit are realized, and the problems of insufficient gain precision, decreased reliability of a multi-element system and large circuit volume caused by the on-resistance of an analog switch in a traditional discrete scheme are solved.

The invention discloses a smog methane composite detection method and device, relates to the technical field of smog methane detection, and solves the technical problems of weak anti-interference capability in a data processing link and lack of a multi-parameter compensation and calibration system. The effective acquisition range is dynamically calculated in combination with a factory calibration interval, the signal amplification factor is adaptively adjusted by using a digital potentiometer, the electric signal strength is ensured to be stabilized in the optimal interval, the influence of laser loss and environment temperature on basic data is eliminated from the source, and the filtering coefficient is dynamically adjusted in combination with the signal-to-noise ratio by using a layered filtering strategy. Random noise is filtered out, and key features of an absorption peak are reserved; through segmented weighted polynomial fitting, accurate extraction of core parameters of the absorption peak is realized; and a unified multi-round outlier elimination mechanism eliminates the interference of abnormal data on the methane concentration, the absorption peak position and the smoke sensing value, and improves the credibility of the data.

The invention relates to a damaged wire detection method, device and system suitable for automatic wire stripping equipment and an embedded program product. The system comprises a signal acquisition module, a frequency conversion module, a digital adjustment module, a phase lock processing module, a signal output module, a buffer amplification module, a master control algorithm module, an anti-interference module and other functional modules. Through a signal acquisition unit formed by an SMA coaxial connector, an EMC protection network and a current-limiting resistor, high-sensitivity detection of capacitance change between a wire core and a cutter in a cable stripping process is realized. The RC inverting oscillator and the digital potentiometer bridge network realize frequency conversion, the phase-locked loop and the low-pass filter are combined to output an analog voltage signal, and the main control unit performs real-time threshold judgment and abnormity identification based on the signal. The system supports multi-channel detection and full-process data archiving, has the advantages of high detection sensitivity, strong anti-interference capability, adaptability to automatic high-speed takt and the like, and can realize real-time, lossless and high-reliability monitoring of cable stripping and damage in a complex industrial environment.

A kind of parallel machine current adding system belongs to the technical field of electronic equipment for measurement and testing, solve how to design a kind of hardware circuit simple, control precision high parallel machine current adding and system problem;The parallel machine current adding and system of the present application, comprising: multiple single machine current sampling circuits, parallel machine current adding and circuit;Single machine current sampling circuit includes: first differential amplifier circuit, first proportional regulating circuit, first unit inverter circuit, first digital potentiometer;Parallel machine current adding and circuit includes: instrument amplifier circuit, second proportional regulating circuit, second unit inverter circuit, second digital potentiometer and multiple proportional input end resistance;Digital potentiometer is applied to parallel machine circuit, and the resistance value of potentiometer is assigned by the number of parallel machine table set to realize the adjustment of amplification factor, replace the single proportional resistance resistance value of traditional resistance proportional circuit to realize the adjustment of amplification factor, hardware circuit is simple, amplification factor control is accurate.

An apparatus for characterizing a sample using nuclear quadrupole resonance (NQR) spectroscopy is described whereby a plurality of NQR detectors operate in tandem, whereby each NQR detector is optimized to operate within a designed frequency range, having the means to shuffle the sample from one NQR detector to the next such as an automatic sample changer, having the means of controlling the frequency and amplitude of the radiofrequency field generated by the NQR detector through motors controlling variable capacitors or through the use of varactor diodes, digital capacitors, or digital potentiometers, having a plurality of Zeeman modulation coils to create a magnetic field surrounding the sample which may be arranged to minimize stray fields, such as a toroid, having the means of operating the spectrometer in frequency modulation mode, and having the capability of configuring the device for either continuous-wave NQR or pulsed NQR.

The invention discloses a sterilized milk dynamic sterilization optimization control method and device based on efficient production, and relates to the related field of dairy product dynamic sterilization optimization control, and the method comprises the steps: respectively connecting temperature, flow, valve feedback and steam control signal links of a target sterilized milk production line in series with a digital potentiometer through an SPI control interface; obtaining a digital potentiometer array; traversing temperature, flow, valve feedback and steam control signal links to perform dynamic sterilization working condition signal time sequence monitoring; performing time sequence memory integration on the multi-source dynamic sterilization condition signal set sequence; switching action mapping analysis of the digital potentiometer array is carried out based on the state characteristics of the multi-source dynamic sterilization working condition signals, and the switching action mapping analysis is distributed to the digital potentiometer array for dynamic sterilization optimization control. The technical problem that existing dynamic sterilization control of sterilized milk is insufficient in sterilization control accuracy and dynamic response capability is solved, and the technical effect of improving the sterilization control accuracy and dynamic response capability is achieved.

The present application relates to the technical field of valve control system, disclose a kind of current signal control circuit indicating valve opening degree, including microprocessor, digital potentiometer, first voltage / current converter, second voltage / current converter, super capacitor, PWM voltage conversion chip, isolated DC / DC power module, high-speed optocoupler and relay;High-speed optocoupler, PWM voltage conversion chip, first voltage / current converter and isolated DC / DC power module form normal current signal generating circuit;Digital potentiometer, second voltage / current converter and super capacitor form abnormal current signal generating circuit;Relay is electrically connected with first voltage / current converter and second voltage / current converter respectively.The current signal control circuit indicating valve opening degree can ensure that valve control system continues stable normal operation when system power failure, low in cost, conducive to upper monitoring system timely monitoring, and quickly make response measures to abnormal state of current signal control circuit.

The application discloses a direct current source device and a direct current adjusting method, relates to the field of direct current tests, and comprises an isolation transformer, a rectifier bridge, a filter capacitor, a digital potentiometer, a voltage gear switching switch, a first current-limiting resistor, a second current-limiting resistor, a collection module and a control module, the collection module is used for collecting current values and voltage values, the control module is connected with the collection module, the digital potentiometer and the voltage gear switching switch respectively, an input end of the isolation transformer is connected with an alternating current source, and an output end of the isolation transformer is connected with the rectifier bridge; the rectifier bridge is connected in parallel with the filter capacitor, and then connected in series with the digital potentiometer; an output end of the digital potentiometer is connected with a common end of the voltage gear switching switch; a first movable end of the voltage gear switching switch is connected with the first current-limiting resistor, and a second movable end of the voltage gear switching switch is connected with the second current-limiting resistor; the other end of the first current-limiting resistor and the other end of the second current-limiting resistor are both connected with a positive electrode as a second load. The application realizes automatic voltage switching, meets different requirements and improves compatibility.

The utility model provides a data acquisition instrument with a hardware triggering function. The data acquisition instrument comprises an analog signal chain; the FPGA controller is electrically connected with the analog signal chain; the microcontroller is electrically connected with the FPGA controller; the isolation assembly is electrically connected with the FPGA controller; the digital potentiometer is electrically connected with the FPGA controller and the microcontroller respectively; and the protection assembly is electrically connected with the isolation assembly. According to the utility model, an external digital trigger signal / analog trigger signal is isolated through the protection assembly and the isolation assembly, so that the reliability of data is improved, and the waste of storage space and computing resources due to a large amount of low-value or unconcerned data is avoided; the FPGA controller synchronously triggers an external digital trigger signal / analog trigger signal by starting an analog signal chain, and the isolation assembly dynamically configures the digital potentiometer through the microcontroller, so that the digital potentiometer can adapt to different types and models, and further can meet scenes with high real-time performance.

The utility model discloses a digital potentiometer calibration circuit and system. The circuit comprises at least one partial pressure calibration branch, a calibration branch and a control module, the voltage division calibration branch comprises at least two voltage division resistors; the control module is electrically connected with the partial pressure output end of the partial pressure calibration branch and is used for determining calibration parameters according to the output voltage of the partial pressure calibration branch and the resistance value of the partial pressure resistor; the calibration branch comprises an auxiliary calibration resistor and a connection port electrically connected with the auxiliary calibration resistor, and the connection port is used for accessing a digital potentiometer; the output end of the calibration branch is electrically connected with the control module; and the control module is also used for determining the calibration resistance of the digital potentiometer according to the output voltage of the calibration branch, the calibration parameter and the resistance value of the auxiliary calibration resistor. According to the technical scheme of the embodiment of the utility model, the time and labor cost of manual calibration are reduced, the calibration efficiency is improved, errors caused by manual operation are reduced, and the calibration precision is improved.

The invention discloses a power supply adjusting device and method based on a digital potentiometer. The circuit comprises a power conversion module, a digital potentiometer, a potentiometer control module and an output voltage regulation module. Wherein the power supply conversion module is connected with an external power supply and is used for converting the input voltage of the external power supply into the power supply voltage of the digital potentiometer, the potentiometer control module and the output voltage regulating module; the potentiometer control module is connected with an upper computer through a bus, receives an adjusting signal sent by the upper computer, and controls the digital potentiometer to be connected to a first resistor of the output voltage adjusting module according to the adjusting signal; and the output voltage adjusting module adjusts the output voltage of the power supply adjusting device within a preset voltage adjusting range according to the accessed first resistor. The power supply adjusting device is programmable, miniaturized, high in precision and high in reliability.

The utility model relates to the technical field of signal transmission and processing, and discloses a multipath signal analog-to-digital conversion circuit. Comprising an amplification unit, an analog-to-digital conversion unit and a microcontroller. The amplification unit adopts a four-channel design, each channel consists of an operational amplification circuit and a digital potentiometer, and the amplification factor can be independently adjusted; the analog-to-digital conversion unit supports multi-channel parallel processing, so that the conversion efficiency is improved; and the microcontroller monitors in real time and dynamically adjusts the magnification times, so that the signal quality is ensured. The circuit solves the problems that the amplification factor is fixed and the dynamic adjustment capability is lacked when a traditional analog-to-digital conversion circuit processes multiple paths of analog signals, is suitable for a complex signal environment, effectively avoids signal distortion, and improves the signal adaptability.

The invention discloses a magnetic suspension motor rotor detection mechanism, a detection method and electronic equipment. The mechanism comprises an eddy current sensor, a differential detection circuit, a digital potentiometer, an MCU (Microprogrammed Control Unit) and a resistance measurement loop which are symmetrically arranged. The digital potentiometer is controlled by the MCU to automatically complete zero position and full position calibration, so that the operation convenience is improved; the state of a sensor coil is monitored in real time by using a resistance measurement loop, fault diagnosis and online compensation based on a temperature coefficient are realized, the temperature drift is effectively inhibited, and the measurement precision is ensured; a rotor displacement signal and a Hall sensor detection angle are accurately extracted in combination with a differential amplification technology, and the reliability and stability of the system under complex working conditions are comprehensively improved.

The present application relates to power supply dynamic efficiency detection technical field, and disclose a kind of power supply dynamic efficiency online evaluation detection method, comprising the following steps, shunt resistance and binding post key position in resistance load instrument are deployed acquisition module, temperature is collected in real time, resistance change caused by temperature is converted into electric signal, in the present application, the scheme is deployed thin film platinum resistance acquisition module in resistance load instrument shunt resistance and binding post key position, four-wire connection method is used to eliminate lead resistance influence, establish the relationship model of shunt resistance and binding post temperature and resistance, the resistance change amount is calculated in combination with Kalman filter and adaptive weighted average algorithm, the measurement signal is corrected in real time by compensation module consisting of programmable gain amplifier and digital potentiometer, the measurement error caused by shunt resistance and binding post temperature change can be reduced by more than 90%, the measurement accuracy of electronic load instrument is improved to ±0.1% or less, ensure that power supply dynamic efficiency evaluation detection result is accurate and reliable.

The application discloses a kind of twin model verification machine and airborne cable network segmentation impedance self-matching method, it is related to aviation technology field, solve the technical problem that existing twin model verification machine uses airborne cable network signal transmission quality is poor, twin model verification machine is set multiple separation surfaces and divides airborne cable network into multiple cable, each separation surface is provided with impedance self-matching unit;Impedance self-matching unit includes voltage sensor, current sensor, signal acquisition circuit, signal processing module, core control unit and digital potentiometer;Among them, core control unit receives digital signal and carries out calculation, and issues control signal to digital potentiometer, digital potentiometer reads control signal and adjusts each load loop output impedance value by adjusting, impedance matching is carried out to cable;The application improves the self-matching ability and self-matching response rate of cable network by the way of segmentation adjustment, realizes fast high-quality communication, driving and power signal transmission.

The application discloses a kind of digital port direct sampling single-bit radar systems, methods, terminal and computer readable storage medium, the system includes digital signal processing chip, transmitting link, receiving link, automatic gain control circuit, voltage bias circuit and digital potentiometer;The digital signal processing chip is connected with the transmitting link, the transmitting link is connected with the automatic gain control circuit, the digital potentiometer is connected with the digital signal processing chip and the automatic gain control circuit respectively, and the voltage bias circuit is connected with the automatic gain control circuit and the digital signal processing chip respectively;Single-bit data is collected by single-bit radar system of digital port direct sampling.The single-bit radar system presented in the application directly realizes single-bit sampling quantization to radar echo signal through digital port, without special ADC chip.

The invention discloses a clock taming device for highway tunnel positioning, and relates to the technical field of satellite navigation, a receiving antenna receives satellite signals, and a Beidou receiving module extracts and outputs 1PPS reference signals; the voltage-controlled crystal oscillator module outputs a stable clock to the FPGA module and provides a reference clock for the phase-locked loop module; the phase-locked loop module processes the stable clock and outputs a precise clock; the FPGA module counts the precise clock in a time window and outputs an actual measurement count value; the MCU module calculates a deviation value between an actually measured count value and a standard count value, executes a control algorithm and outputs a voltage control word; the digital potentiometer module generates an analog voltage by using a voltage control word and adjusts the output frequency of the voltage-controlled crystal oscillator module; and the closed-loop feedback module is used for enabling a local clock signal to be consistent with a satellite clock signal based on closed-loop feedback control formed by the above modules. According to the invention, the problems of positioning failure caused by crystal oscillator drift of the local clock in the tunnel scene and high cost and slow response of the existing solution are solved.

The utility model discloses a vehicle gas detection system and a vehicle, the vehicle gas detection system comprises a storage battery, a gas sensing unit and a digital potentiometer, the storage battery is carried in a front cover of the vehicle; the gas sensing unit is electrically connected with the storage battery and used for detecting the content of poisonous gas in the vehicle front cover. The digital potentiometer is electrically connected with the gas sensing unit and is configured to be capable of receiving and displaying toxic gas content data detected by the gas sensing unit; the microcontroller is electrically connected with the digital potentiometer and the alarm module, and the microcontroller can read the toxic gas content data received by the digital potentiometer and control the alarm module to give an alarm or stop giving an alarm. The gas sensing unit detects the content of poisonous gas in the front cover of the vehicle in real time, the content is displayed through the digital potentiometer, and the concentration condition of the poisonous gas in the front cover of the vehicle can be visually obtained; the microcontroller can control the alarm module to give an alarm so as to remind a driver in time, and the driving safety can be improved.

The application discloses a kind of circuit, control method and storage medium for preventing battery system passive equalization function out of control, including main circuit, at least two single cell equalization circuits;Main circuit, by at least two series single cell, shunt, BMS, main relay are sequentially connected;Each single cell equalization circuit, by MOS tube, single cell, digital potentiometer and four diodes D1, D2, D3, D4 are sequentially connected to form a circuit, four diodes consistent unidirectional conduction;BMS, its first end is connected to MOS tube by control line, for controlling the opening and closing of MOS tube;Its second end is connected to digital potentiometer by control line, for real-time control resistance value of digital potentiometer, and real-time acquisition temperature of digital potentiometer;The application reduces the failure rate of battery passive equalization function, can effectively prevent the damage of single cell, to improve the safety, efficiency and service life of battery.

The invention provides a single-component thruster temperature measurement method for space application. The method comprises the steps that a programmable digital potentiometer outputs a series of resistance values to simulate resistance value changes of PT100 at different temperatures; calculating a theoretical temperature value Tthreshold of each resistance value through an IEC60751 standard formula, and recording a digital code value Xadc output by an ADC (Analog to Digital Converter) to form a (Xadc, Tthreshold) data pair; drawing a nonlinear relation curve, and dividing the digital code value range into a plurality of continuous intervals according to the curve; carrying out linear regression on the data points of each interval, and fitting a linear function relation of each interval: Tether = Kn * Xadc + Bn; burning each interval boundary value and the corresponding Kn and Bn into a program memory of an on-orbit MCU (Microprogrammed Control Unit); and the in-orbit MCU judges the interval according to the real-time digital code value Xnow, calls the corresponding Kn and Bn, and calculates the current temperature Tcurrent = Kn * Xnow + Bn, so that high-precision, low-resource-occupation, high-reliability and low-cost temperature measurement is realized.

The utility model relates to an automatic impedance matching device for an MRI (Magnetic Resonance Imaging) radio frequency receiving coil, belonging to the technical field of nuclear magnetic resonance. The device comprises an S11 measuring circuit module, an S21 measuring circuit module, a radio frequency receiving coil matching circuit, a radio frequency receiving coil matching circuit control circuit and a real-time display module. And the S11 and S21 measurement circuit modules are used for measuring the impedance and the reflection coefficient of the radio frequency receiving coil matching circuit and automatically adjusting the impedance of the radio frequency receiving coil matching circuit according to the measurement result. And the radio frequency receiving coil matching circuit is connected with the S11 and S21 measuring circuit modules and is used as a measured circuit, and the impedance of the measured circuit is adjustable. And the radio frequency receiving coil matching circuit control circuit is connected with the radio frequency receiving coil matching circuit and is used for controlling and adjusting the impedance of the radio frequency receiving coil matching circuit. According to the device, the combination of the capacitor and the voltage-controlled adjustable capacitor is adopted, the voltage value of the voltage-controlled adjustable capacitor is controlled through the DAC device or the digital potentiometer, and the impedance of the radio frequency receiving coil matching circuit is changed.

The application discloses a magnetostrictive detection method and system based on adaptive signal conditioning, and belongs to the technical field of measuring instruments, comprising an efficient single-tube switching boost circuit and an innovative adaptive signal conditioning circuit. Through microcontroller driving, two digital potentiometers are adjusted by using an SPI bus linkage to control the gain of an operational amplifier and the threshold voltage of a comparator, thereby realizing synchronous adaptive matching of echo signal amplitude and decision threshold. The system has a data learning function, can store optimal configuration parameters and bind them with specific probes, and realizes quick automatic adaptation after replacement or historical parameter calling. The application realizes manual calibration-free replacement of components, significantly improves measurement accuracy, reliability and use efficiency, and reduces maintenance cost.