Synchronous control method and system for dual-channel analog-to-digital conversion chip

Abstract

The invention discloses a dual-channel analog-to-digital conversion chip synchronization control method and system, and relates to the technical field of analog-to-digital conversion, and the method comprises the following steps: a system initialization step: carrying out the initialization operation of a dual-channel analog-to-digital conversion chip, a synchronization signal generator, a control circuit and a data processing module; configuring a working mode, a sampling rate and a data output format of the dual-channel analog-to-digital conversion chip; configuring clock parameters of the synchronizing signal generator; setting a control algorithm and initialization parameters of the control circuit; the dual-channel analog-to-digital conversion chip is used for presetting processing parameters such as filtering and calibration of the data processing module, the dual-channel analog-to-digital conversion chip comprises two independent analog-to-digital conversion channels which are respectively used for processing two paths of analog signals, a high-precision synchronous control signal is generated through the synchronous signal generator, accurate synchronization of sampling moments of the two paths of analog signals is realized, and the sampling precision of the two paths of analog signals is improved. The synchronization precision of dual-channel analog-to-digital conversion is effectively improved, signal processing errors caused by asynchronous sampling are reduced, and the system performance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of analog-to-digital conversion, and in particular to a dual-channel analog-to-digital conversion chip synchronization control method and system. Background Art

[0002] In modern electronics, dual-channel analog-to-digital conversion chips are widely used in scenarios requiring simultaneous processing of two analog signals. For example, in communications systems, both in-phase and quadrature analog signals must be processed; in data acquisition systems, two analog signals corresponding to different physical quantities may need to be collected simultaneously. However, existing technologies present numerous challenges in the synchronous control of dual-channel analog-to-digital conversion chips.

[0003] It's difficult to ensure accurate synchronization of the sampling moments of two analog signals. This asynchrony can lead to errors in the subsequent joint processing of the two signals. For example, in applications like signal demodulation and synthesis, asynchrony can cause distortion in the demodulated or synthesized signal, severely impacting system performance.

[0004] Traditional analog-to-digital conversion chips lack flexibility in operating mode configuration, making it difficult to automatically switch operating modes based on the amplitude range and noise characteristics of the input analog signal. This requires manual setting of operating modes based on experience, increasing operational complexity. In actual applications, improper operating mode settings may prevent the chip from fully utilizing its performance.

[0005] Furthermore, in the analog signal preprocessing stage, for analog signals of different amplitudes, traditional signal conditioning circuits find it difficult to adaptively adjust the gain, which may lead to insufficient or excessive signal amplification, affecting the accuracy of subsequent sampling and analog-to-digital conversion.

[0006] Furthermore, during digital signal processing, traditional digital filters struggle to dynamically adjust parameters based on the frequency characteristics of the signal being monitored in real time, making them unable to meet the demands of complex signal processing. The calibration process also often lacks effective integration of historical calibration data and real-time calibration signals, resulting in insufficient calibration accuracy and adaptability. Regarding data output and optimization, traditional methods are unable to dynamically select the appropriate compression algorithm and adjust the compression ratio based on the real-time bandwidth of data transmission and the storage capacity of the target storage device. This makes it difficult to minimize data transmission volume and storage space while ensuring data integrity or acceptable distortion.

[0007] The existing technology has problems in the synchronization control of dual-channel analog-to-digital conversion chips, such as low synchronization accuracy, inflexible working mode configuration, poor adaptability of analog signal preprocessing, limited digital signal processing capabilities, and poor data output and optimization effects. A new synchronization control method and system are urgently needed to solve these problems. Summary of the Invention

[0008] In view of the above existing problems, the present application is proposed.

[0009] Therefore, the present application provides a dual-channel analog-to-digital conversion chip synchronization control method, comprising the following steps:

[0010] System initialization step: initialize the dual-channel analog-to-digital conversion chip, the synchronization signal generator, the control circuit and the data processing module. Specifically, configure the working mode of the dual-channel analog-to-digital conversion chip (select single-ended input mode, differential input mode or pseudo-differential input mode, and automatically switch the working mode according to the amplitude range and noise characteristics of the input analog signal), sampling rate, data output format; configure the clock parameters of the synchronization signal generator; set the control algorithm and initialization parameters of the control circuit; preset the filtering, calibration and other processing parameters of the data processing module, the dual-channel analog-to-digital conversion chip contains two independent analog-to-digital conversion channels, respectively used for processing two analog signals.

[0011] Synchronization signal accurate generation step: using a synchronization signal generator to generate a high-precision synchronization control signal, which is used to accurately synchronize the sampling time of two analog signals. The synchronization signal generator generates a stable reference clock signal through an internal high-precision clock circuit, and then processes the reference clock signal through a signal frequency division circuit and a signal modulation circuit to generate a synchronization control signal with precise pulse width, phase and frequency, ensuring that the two analog-to-digital conversion channels sample their respective analog signals at the same time. The period of the synchronization control signal generated by the synchronization signal generator has an adjustable multiple relationship with the period of the reference clock signal generated by the high-precision clock circuit. By adjusting this multiple relationship, the sampling frequency can be flexibly adjusted, and the phase accuracy error of the synchronization control signal is less than a set threshold.

[0012] Analog signal preprocessing step: the signal conditioning circuit is used to amplify, attenuate, impedance match and filter the input two-way analog signal respectively, optimize the quality of the analog signal, eliminate the noise and interference in the signal, and improve the stability and accuracy of the analog signal, providing a good signal basis for subsequent sampling and analog-to-digital conversion. The signal conditioning circuit uses a programmable gain amplifier to amplify or attenuate the analog signal, and the gain of the programmable gain amplifier can be automatically adjusted according to the amplitude of the input analog signal to adapt to the input of analog signals with different amplitudes.

[0013] Analog signal synchronous sampling step: under the trigger of the synchronization control signal, two analog-to-digital conversion channels sample the preprocessed analog signal respectively, converting continuous analog signal into discrete sampling value. The sample and hold circuit samples and holds the analog signal under the action of the synchronization control signal, so as to convert the analog signal by the analog-to-digital conversion circuit.

[0014] Analog-to-digital conversion steps: The two analog-to-digital conversion channels perform independent analog-to-digital conversion on the discrete values ​​obtained by sampling, and convert the sampled values ​​of the analog signals into digital signals.

[0015] Digital signal processing steps: Process the converted digital signal, including filtering with a reconfigurable digital filter (the reconfigurable digital filter can be programmed as a low-pass filter, high-pass filter, band-pass filter or band-stop filter, and during the filtering process, the filter's cutoff frequency, bandwidth and other parameters can be dynamically adjusted according to the real-time monitored signal frequency characteristics). The gain error, offset error and nonlinear error of the analog-to-digital conversion chip are calibrated by establishing a multidimensional calibration model (combining historical calibration data and real-time collected calibration signals, and optimizing and updating the parameters of the multidimensional calibration model through an adaptive algorithm to improve the accuracy and adaptability of the calibration).

[0016] Data Output and Optimization Steps: The processed digital signal is output according to the preset data output format. Based on the data transmission bandwidth and storage capacity requirements, the digital signal is compressed using either a lossless or lossy compression algorithm to reduce data transmission volume and storage space. Based on the real-time data transmission bandwidth and the storage capacity of the target storage device, a lossless or lossy compression algorithm is dynamically selected, and the compression ratio is automatically adjusted to minimize data transmission volume and storage space while ensuring data integrity or an acceptable degree of distortion.

[0017] A dual-channel analog-to-digital conversion chip synchronous control system, comprising:

[0018] Dual-channel analog-to-digital conversion chip: It features two independent analog-to-digital conversion channels, each of which includes a signal preprocessing circuit, a sample-and-hold circuit, an analog-to-digital conversion circuit, and a data buffer circuit. The signal preprocessing circuit amplifies, attenuates, performs impedance matching, and filters the input analog signal. The sample-and-hold circuit samples and holds the preprocessed analog signal under the influence of a synchronous control signal. The analog-to-digital conversion circuit converts the analog signal output by the sample-and-hold circuit into a digital signal. The data buffer circuit temporarily stores the converted digital signal. An isolation circuit is provided between the two analog-to-digital conversion channels to reduce signal interference between the two channels and improve the system's anti-interference performance.

[0019] Synchronous signal generator: connected to the dual-channel analog-to-digital conversion chip, including a high-precision clock circuit, a signal frequency division circuit, and a signal modulation circuit. The high-precision clock circuit generates a stable reference clock signal; the signal frequency division circuit generates clock signals of different frequencies according to a preset frequency division ratio; the signal modulation circuit generates a synchronous control signal based on the divided clock signal, and the pulse width, phase, and frequency of the synchronous control signal can be precisely adjusted. The synchronous control signal generated by the synchronous signal generator is transmitted to the synchronous control pin of the dual-channel analog-to-digital conversion chip via differential signal transmission or optocoupler isolation transmission to enhance the anti-interference ability of the synchronous control signal and ensure accurate synchronization of the sampling time.

[0020] The control circuit is connected to the dual-channel analog-to-digital conversion chip and synchronization signal generator and includes a microcontroller, a storage unit, a mode selection circuit, a state monitoring unit, and a fault diagnosis unit. The microcontroller is used to execute the initialization program and control algorithm to control the dual-channel analog-to-digital conversion chip and synchronization signal generator. The microcontroller uses a multi-core processor that can handle multiple control tasks simultaneously, improving the system's control efficiency and response speed. The storage unit is used to store data such as initialization parameters, calibration parameters, control programs, and user configuration information. The mode selection circuit is used to select the operating mode of the analog-to-digital conversion chip based on user input or system requirements. The state monitoring unit is used to monitor the operating status of various system components in real time. The fault diagnosis unit is used to diagnose faults based on the parameters collected by the state monitoring unit and take appropriate measures.

[0021] The data processing module is connected to the dual-channel analog-to-digital conversion chip and includes a digital filter unit, a calibration unit, and a data compression unit. The digital filter unit is used to filter the digital signal. Implemented using a field-programmable gate array (FPGA), the digital filter unit can quickly reconstruct and adjust the parameters of the digital filter to meet different signal processing requirements. The calibration unit is used to calibrate the gain error, offset error, and nonlinear error of the digital signal. The data compression unit is used to compress the processed digital signal using either a lossless or lossy compression algorithm.

[0022] Communication interface module: connected to the data processing module and used to transmit the processed digital signal to an external device. The types of communication interface modules include but are not limited to SPI interface, I2C interface, USB interface, and Ethernet interface, and support adaptive switching of multiple communication protocols. It can automatically select a matching communication protocol for data transmission according to the communication protocol type of the external device.

[0023] The power management module provides stable power to the dual-channel analog-to-digital conversion chip, synchronization signal generator, control circuit, and data processing module, and implements intelligent power management, including power on / off, sleep, and wake-up functions. The power management module includes a voltage regulation circuit and a current monitoring circuit. The voltage regulation circuit dynamically adjusts the output voltage based on the operating requirements of each system component, while the current monitoring circuit monitors the current consumption of each component in real time to facilitate power management and power consumption optimization.

[0024] Human-computer interaction module: used to receive configuration parameters and control instructions input by the user, and display the system's working status and processing results to the user. The human-computer interaction module includes components such as display screen, buttons and indicator lights.

[0025] The beneficial effects of the present invention are as follows: a high-precision synchronization control signal is generated by a synchronization signal generator, thereby achieving accurate synchronization of the sampling moments of the two analog signals, effectively improving the synchronization accuracy of the dual-channel analog-to-digital conversion, reducing the signal processing error caused by asynchronous sampling, and improving the system performance. For example, more accurate signals can be obtained in applications such as signal demodulation and synthesis.

[0026] The dual-channel analog-to-digital conversion chip's operating mode can automatically switch according to the amplitude range and noise characteristics of the input analog signal, improving the flexibility of the chip's operating mode configuration. It eliminates the need for manual experience settings, reduces operational complexity, and can better adapt to different analog signal inputs, fully unleashing the chip's performance.

[0027] The programmable gain amplifier in the signal conditioning circuit can automatically adjust the gain according to the amplitude of the analog signal, making the analog signal preprocessing more adaptable and ensuring that analog signals of different amplitudes can be appropriately amplified or attenuated, providing a more accurate signal basis for subsequent sampling and analog-to-digital conversion.

[0028] During the digital signal processing process, the reconfigurable digital filter can dynamically adjust its parameters according to the frequency characteristics of the signal monitored in real time. The multidimensional calibration model combines historical calibration data and real-time calibration signals to optimize and update parameters, which significantly improves the digital signal processing capability, can better handle complex signals, and improves the accuracy and adaptability of calibration.

[0029] The data output and optimization steps can dynamically select compression algorithms and adjust compression ratios based on the requirements of data transmission bandwidth and storage capacity. While ensuring data integrity or acceptable distortion, it minimizes data transmission volume and storage space occupied, thereby improving data transmission and storage efficiency.

[0030] The various modules in the system work together. For example, the synchronization signal generator uses a high-precision clock circuit and a specific signal processing circuit to generate accurate synchronization signals. The control circuit uses a multi-core processor to improve control efficiency. The data processing module uses FPGA to achieve rapid reconstruction and parameter adjustment of the digital filter, etc., which improves the overall performance and adaptability of the system. The system also has good anti-interference performance, power management function and human-computer interaction function, which is convenient for users to use and manage. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a schematic diagram of the overall flow of the dual-channel analog-to-digital conversion chip synchronous control system.

[0033] Figure 2 This is a schematic diagram of the connection between the synchronization signal generator and the dual-channel analog-to-digital conversion chip.

[0034] Figure 3 Schematic diagram of digital signal processing structure. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0038] Example 1, with reference to Figure 1 、 Figure 2 and Figure 3 This is the first embodiment of the present invention, which provides a dual-channel analog-to-digital conversion chip synchronization control method, comprising the following steps:

[0039] S1, system initialization:

[0040] When the communication system starts up, the dual-channel analog-to-digital converter chip is configured for operating mode. Based on the amplitude range and noise characteristics of the input analog signal, it automatically switches to differential input mode. The sampling rate is set to a specific value that meets the communication signal processing requirements, and the data output format is set to a format that is easily processed by the communication system. Simultaneously, the clock parameters of the synchronization signal generator are configured to ensure that it generates a stable reference clock signal. The control algorithm and initialization parameters of the control circuit are set to effectively control each module according to the requirements of the communication system. Processing parameters such as filtering and calibration are preset for the data processing module. For example, calibration parameters are set to suit the characteristics of the communication signal.

[0041] S2, precise generation of synchronization signals:

[0042] The synchronization signal generator generates a stable reference clock signal through an internal high-precision clock circuit. The signal divider circuit divides the reference clock signal into clock signals of appropriate frequencies according to a preset division ratio. The signal modulation circuit then generates a synchronization control signal with precise pulse width, phase, and frequency based on the divided clock signal. By adjusting the period of the synchronization control signal to a multiple of the period of the reference clock signal, the sampling frequency can be flexibly adjusted to meet the communication system's requirements for sampling signals in different frequency bands. The phase accuracy error of the synchronization control signal is guaranteed to be less than a set threshold, ensuring that the two analog-to-digital conversion channels sample their respective analog signals at the same time.

[0043] S3, analog signal preprocessing:

[0044] In a communication system, two analog input signals enter the two analog-to-digital conversion channels of a dual-channel analog-to-digital conversion chip. The programmable gain amplifier in the signal conditioning circuit automatically adjusts the gain based on the amplitude of the input analog signal, amplifying or attenuating the analog signal. Simultaneously, it performs impedance matching and filtering to optimize the analog signal quality, eliminate noise and interference, and provide a sound signal foundation for subsequent sampling and analog-to-digital conversion.

[0045] S4, analog signal synchronous sampling:

[0046] Triggered by the synchronization control signal, the sample-and-hold circuits of the two analog-to-digital conversion channels sample and hold the preprocessed analog signals, converting the continuous analog signals into discrete sampling values, ensuring that the sampling moments of the two analog signals are precisely synchronized.

[0047] S5, analog-to-digital conversion:

[0048] The two analog-to-digital conversion channels perform independent analog-to-digital conversion on the discrete values ​​obtained by sampling, and convert the sampled values ​​of the analog signals into digital signals.

[0049] S6, Digital Signal Processing:

[0050] The digital filter unit dynamically adjusts parameters such as the bandpass filter's cutoff frequency and bandwidth based on the real-time frequency characteristics of the communication signal to filter the converted digital signal. The calibration unit combines historical calibration data with the real-time acquired calibration signal to optimize and update the parameters of the multidimensional calibration model through an adaptive algorithm, calibrating the digital signal for gain error, offset error, and nonlinearity.

[0051] S7, data output and optimization:

[0052] According to the real-time data transmission bandwidth of the communication system and the storage capacity of the target storage device, the data compression unit dynamically selects a lossless compression algorithm or a lossy compression algorithm, and automatically adjusts the compression ratio, outputting the processed digital signal according to the preset data output format, reducing the amount of data transmitted and the storage space occupied, and improving the data transmission and storage efficiency of the communication system.

[0053] A dual-channel analog-to-digital conversion chip synchronous control system:

[0054] Select a dual-channel analog-to-digital converter chip with two independent analog-to-digital conversion channels and connect it to the synchronization signal generator, control circuit, data processing module, communication interface module, power management module, and human-computer interaction module according to the system architecture diagram. During the connection process, ensure that the synchronization control signal from the synchronization signal generator is connected to the synchronization control pin of the dual-channel analog-to-digital converter chip using differential signal transmission.

[0055] Initialize the microcontroller in the control circuit and set the multi-core processor to operate in an efficient parallel processing mode to handle multiple control tasks simultaneously. A storage unit is set up to store data such as initialization parameters, calibration parameters, and control programs commonly used in the communication system.

[0056] The digital filter unit in the data processing module is configured using a field-programmable gate array (FPGA) to implement a reconfigurable digital filter. Based on the characteristics of the communication system's signals, it is initially configured as a bandpass filter, with parameters such as its cutoff frequency and bandwidth set. The calibration unit establishes a multidimensional calibration model and initializes the model parameters based on the communication system's signal accuracy requirements. The data compression unit is configured to dynamically select either a lossless or lossy compression algorithm based on the real-time data transmission bandwidth and the target storage device's storage capacity.

[0057] The power management module is initialized and sets up the voltage regulation circuit to dynamically adjust the output voltage according to the operating voltage requirements of each part of the system. The current monitoring circuit is set up to monitor the current consumption of each part in real time to facilitate power management and power consumption optimization.

[0058] The human-computer interaction module sets a display screen to display the system working status and processing results, sets buttons to receive configuration parameters and control instructions input by users, and sets indicator lights to indicate the key working status of the system.

[0059] Example 2, reference Figure 1 、 Figure 2 and Figure 3 , which is a second embodiment of the present invention, provides a dual-channel analog-to-digital conversion chip synchronization control method, comprising the following steps:

[0060] During system initialization, the dual-channel analog-to-digital conversion chip is configured with an appropriate operating mode, sampling rate, and data output format based on the amplitude range and noise characteristics of the industrial sensor output signal. The synchronization signal generator and control circuit parameters are configured, and the data processing module parameters are preset. The synchronization signal generator generates synchronization control signals to ensure synchronous sampling of the two analog signals. The signal conditioning circuit preprocesses the analog signals input from the industrial sensor, and the analog-to-digital conversion channel converts the analog signals into digital signals. The digital signal processing module filters and calibrates the converted digital signals to adapt to complex industrial signal environments. Finally, the processed digital signals are output and compressed according to industrial data transmission and storage requirements.

[0061] A dual-channel analog-to-digital conversion chip synchronization control system selects appropriate dual-channel analog-to-digital conversion chips and other modules, and connects the modules according to the system architecture. The control circuit's microcontroller is set to an operating mode that can quickly respond to changes in industrial signals. The storage unit stores commonly used parameters and programs for industrial data acquisition. The data processing module configures digital filters and calibration models based on the characteristics of industrial signals. The power management module performs initialization settings based on the power requirements of industrial equipment. The human-computer interaction module provides an interface and operation method that is convenient for industrial operators.

[0062] In summary, the dual-channel analog-to-digital conversion chip synchronization control method and system of the present invention can effectively generate high-precision synchronization control signals through a synchronization signal generator, realize accurate synchronization of the sampling moments of the two analog signals, effectively improve the synchronization accuracy of the dual-channel analog-to-digital conversion, reduce the signal processing error caused by asynchronous sampling, and improve the system performance.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A dual-channel analog-to-digital conversion chip synchronization control method, characterized in that: The following steps are involved: System initialization steps: Initialize the dual-channel analog-to-digital conversion chip, synchronization signal generator, control circuit, and data processing module; configure the operating mode, sampling rate, and data output format of the dual-channel analog-to-digital conversion chip; configure the clock parameters of the synchronization signal generator; set the control algorithm and initialization parameters of the control circuit; and preset processing parameters such as filtering and calibration of the data processing module. The dual-channel analog-to-digital conversion chip includes two independent analog-to-digital conversion channels, each for processing two analog signals. Precise synchronization signal generation steps: Use a synchronization signal generator to generate a high-precision synchronization control signal. This synchronization control signal is used to accurately synchronize the sampling time of the two analog signals. The synchronization signal generator uses an internal high-precision clock circuit to generate a stable reference clock signal. The reference clock signal is then processed by a signal frequency division circuit and a signal modulation circuit to generate a synchronization control signal with precise pulse width, phase, and frequency, ensuring that the two analog-to-digital conversion channels sample their respective analog signals at the same time. Analog signal preprocessing step: The two input analog signals are amplified, attenuated, impedance matched, and filtered through the signal conditioning circuit to optimize the quality of the analog signals, eliminate noise and interference in the signals, and improve the stability and accuracy of the analog signals, providing a good signal foundation for subsequent sampling and analog-to-digital conversion; Analog signal synchronous sampling step: Under the triggering of the synchronous control signal, the two analog-to-digital conversion channels respectively sample the pre-processed analog signal and convert the continuous analog signal into discrete sampling values. The sample-and-hold circuit samples and holds the analog signal under the action of the synchronous control signal so that the analog-to-digital conversion circuit can perform conversion. Analog-to-digital conversion step: The two analog-to-digital conversion channels perform independent analog-to-digital conversion on the discrete values ​​obtained by sampling, converting the sampled values ​​of the analog signals into digital signals; Digital signal processing step: Processing the converted digital signal, including filtering with a reconfigurable digital filter and calibrating the gain error, offset error, and nonlinear error of the analog-to-digital conversion chip by establishing a multi-dimensional calibration model; Data output and optimization steps: The processed digital signal is output according to the preset data output format, and according to the requirements of data transmission bandwidth and storage capacity, the digital signal is compressed using a lossless compression algorithm or a lossy compression algorithm to reduce the data transmission volume and storage space occupied.

2. The dual-channel analog-to-digital conversion chip synchronization control method according to claim 1, characterized in that: The period of the synchronization control signal generated by the synchronization signal generator and the period of the reference clock signal generated by the high-precision clock circuit have an adjustable multiple relationship. By adjusting the multiple relationship, flexible adjustment of the sampling frequency is achieved, and the phase accuracy error of the synchronization control signal is less than the set threshold. In the system initialization step, the working mode configuration of the analog-to-digital conversion chip includes selecting a single-ended input mode, a differential input mode or a pseudo-differential input mode, and can automatically switch the working mode according to the amplitude range and noise characteristics of the input analog signal.

3. The dual-channel analog-to-digital conversion chip synchronization control method according to claim 1, characterized in that: In the analog signal preprocessing step, the signal conditioning circuit uses a programmable gain amplifier to amplify or attenuate the analog signal. The gain of the programmable gain amplifier can be automatically adjusted according to the amplitude of the input analog signal to adapt to analog signal inputs of different amplitudes. In the digital signal processing step, the reconfigurable digital filter can be configured as a low-pass filter, a high-pass filter, a band-pass filter or a band-stop filter through programming, and during the filtering process, the filter parameters such as the cutoff frequency and bandwidth can be dynamically adjusted according to the real-time monitored signal frequency characteristics.

4. The dual-channel analog-to-digital conversion chip synchronization control method according to claim 1, characterized in that: In the digital signal processing step, when calibrating the digital signal, the parameters of the multidimensional calibration model are optimized and updated by an adaptive algorithm in combination with historical calibration data and the calibration signal collected in real time, so as to improve the accuracy and adaptability of the calibration.

5. The dual-channel analog-to-digital conversion chip synchronization control method according to claim 1, characterized in that: In the data output and optimization step, a lossless compression algorithm or a lossy compression algorithm is dynamically selected based on the real-time bandwidth of data transmission and the storage capacity of the target storage device, and the compression ratio is automatically adjusted to maximize the reduction of data transmission volume and storage space while ensuring data integrity or acceptable distortion.

6. A dual-channel analog-to-digital conversion chip synchronous control system, characterized in that: include: A dual-channel analog-to-digital conversion chip has two independent analog-to-digital conversion channels. Each analog-to-digital conversion channel includes a signal preprocessing circuit, a sample-and-hold circuit, an analog-to-digital conversion circuit, and a data buffer circuit. The signal preprocessing circuit is used to amplify, attenuate, impedance match, and filter the input analog signal. The sample-and-hold circuit samples and holds the preprocessed analog signal under the action of a synchronous control signal. The analog-to-digital conversion circuit converts the analog signal output by the sampling and holding circuit into a digital signal; the data buffer circuit is used to temporarily store the converted digital signal; A synchronization signal generator is connected to the dual-channel analog-to-digital conversion chip and includes a high-precision clock circuit, a signal frequency division circuit, and a signal modulation circuit; the high-precision clock circuit generates a stable reference clock signal; The signal frequency dividing circuit generates clock signals of different frequencies according to a preset frequency dividing ratio; The signal modulation circuit generates a synchronous control signal according to the divided clock signal. The pulse width, phase and frequency of the synchronous control signal can be precisely adjusted. A control circuit is connected to the dual-channel analog-to-digital conversion chip and the synchronization signal generator, and includes a microcontroller, a storage unit, a mode selection circuit, a state monitoring unit, and a fault diagnosis unit; the microcontroller is used to execute an initialization program and a control algorithm to control the dual-channel analog-to-digital conversion chip and the synchronization signal generator; the storage unit is used to store data such as initialization parameters, calibration parameters, control programs, and user configuration information; The mode selection circuit is used to select the working mode of the analog-to-digital conversion chip according to user input or system requirements; the status monitoring unit is used to monitor the working status of each part of the system in real time; the fault diagnosis unit is used to diagnose faults based on the parameters collected by the status monitoring unit and take corresponding treatment measures; A data processing module, connected to the dual-channel analog-to-digital conversion chip, comprising a digital filter unit, a calibration unit, and a data compression unit; The digital filter unit is used to filter the digital signal; the calibration unit is used to calibrate the gain error, offset error and nonlinear error of the digital signal; the data compression unit is used to compress the processed digital signal using a lossless compression algorithm or a lossy compression algorithm; A communication interface module, connected to the data processing module, for transmitting the processed digital signal to an external device. The types of communication interface modules include but are not limited to SPI interface, I2C interface, USB interface, and Ethernet interface; The power management module is used to provide stable power for the dual-channel analog-to-digital conversion chip, synchronization signal generator, control circuit and data processing module, and realize intelligent power management, including power on, off, sleep and wake-up functions.

7. The dual-channel analog-to-digital conversion chip synchronous control system according to claim 6, characterized in that: The synchronization control signal generated by the synchronization signal generator is transmitted to the synchronization control pin of the dual-channel analog-to-digital conversion chip via a differential signal transmission method or an optocoupler isolation transmission method to enhance the anti-interference ability of the synchronization control signal and ensure accurate synchronization of the sampling time. The microcontroller in the control circuit adopts a multi-core processor, which can handle multiple control tasks at the same time, thereby improving the control efficiency and response speed of the system.

8. The dual-channel analog-to-digital conversion chip synchronous control system according to claim 6, characterized in that: The digital filter unit in the data processing module is implemented using a field programmable gate array (FPGA), which can quickly realize the reconstruction and parameter adjustment of the digital filter to meet different signal processing requirements. The power management module includes a voltage regulation circuit and a current monitoring circuit. The voltage regulation circuit is used to dynamically adjust the output voltage according to the working requirements of each part of the system; the current monitoring circuit is used to monitor the current consumption of each part in real time to facilitate power management and power consumption optimization.

9. The dual-channel analog-to-digital conversion chip synchronous control system according to claim 6, characterized in that: The communication interface module supports adaptive switching of multiple communication protocols and can automatically select a matching communication protocol for data transmission according to the communication protocol type of the external device. An isolation circuit is provided between the two analog-to-digital conversion channels of the dual-channel analog-to-digital conversion chip to reduce signal interference between the two channels and improve the anti-interference performance of the system.

10. The dual-channel analog-to-digital conversion chip synchronous control system according to claim 6, characterized in that: The system also includes a human-computer interaction module for receiving configuration parameters and control instructions input by the user and displaying the system's working status and processing results to the user. The human-computer interaction module includes components such as a display screen, buttons, and indicator lights.

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