Portable six-transistor arbitrary signal source

Abstract

This invention relates to the field of signal generator technology, specifically a portable 6.5-bit arbitrary signal source. The system includes a main control scheduling module, a voltage behavior module, a current drive module, a shielding path module, and an output verification module. In this invention, state judgment is implemented through multi-cycle sampling data fluctuations and trend changes, achieving dynamic identification and processing of channel stability and structural switching, improving real-time response and adaptability. Offset states are identified based on periodic changes in voltage extreme values, and prompt signals are output, enhancing the accuracy of abnormal voltage perception. Driven gain is analyzed and corrected based on historical parameter differences, improving the control capability of the drive layer. Path activation is performed by comparing directional interference intensity and generating unique labels, improving path identification accuracy under interference environments. Channel state consistency is compared based on path direction, marking stable path outputs to ensure signal output consistency. The overall system constructs an adaptive signal link with a closed loop of judgment, correction, isolation, and verification.

Description

Technical Field

[0001] This invention relates to the field of signal generator technology, and more particularly to a portable 6.5-bit arbitrary signal source. Background Technology

[0002] The field of signal generator technology mainly involves the generation, modulation, and output of electronic signals. It plays a core functional role in applications such as electronic measurement, automation control, communication systems, medical testing, and radar systems. The core aspects of this technology include the precise control and programmable setting of parameters such as signal frequency, amplitude, phase, and waveform. The overall technical approach typically uses high-precision digital-to-analog converter circuits, constant power supply control, temperature compensation circuits, and timing control logic to generate and output various standard waveforms and custom waveform signals. Among them, the traditional six-and-a-half-bit voltage source refers to a high-precision DC signal output device with six-and-a-half-bit measurement accuracy. Its technical focus is on the stable output and adjustment of high-precision voltage signals. The traditional six-and-a-half-bit voltage source usually uses a voltage regulator circuit and a high-resolution digital-to-analog converter chip to achieve precise voltage control. Specifically, it uses a reference voltage source to generate an initial reference signal, which is then amplified by a voltage amplifier circuit and a temperature compensation circuit before outputting the target voltage signal. Parameter settings and signal adjustments are achieved through panel knobs or buttons.

[0003] Existing technologies employ voltage regulator circuits and high-resolution digital-to-analog converter chips for voltage signal output regulation. While achieving high-precision DC output, they lack sufficient ability to identify signal state fluctuations and parameter offsets, and cannot respond in real-time to channel stability changes under complex operating conditions, easily leading to long-term accumulation of output signal deviations. Current structures rely on panel knobs or buttons for setting operations, depending on manual intervention or static presets for dynamic response, making it difficult to achieve rapid correction and closed-loop adjustment under multi-variable interference conditions. The lack of a continuous comparison mechanism for periodic voltage behavior results in a lack of timely detection of anomalies such as voltage drift, easily affecting the accurate output of subsequent signal links. In electromagnetic interference environments, existing structures lack an active analysis mechanism for the dominant direction and interference intensity; shielding path selection relies on a fixed grounding strategy, and path determination lacks directional selectivity, potentially resulting in some interference signals not being effectively isolated, affecting overall signal quality and system stability. The output verification stage lacks an embedded channel state consistency verification mechanism, limiting signal path reliability judgment and making it difficult to ensure the stable and consistent output state of each signal in a multi-source signal mixed output context. The aforementioned deficiencies can easily lead to problems such as signal inaccuracy, path interference, and system misjudgment in high-speed communication, precision measurement, and complex control scenarios. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and propose a portable 6.5-bit arbitrary signal source.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a portable 6.5-bit arbitrary signal source comprising:

[0006] The main control scheduling module extracts periodic sampling data from the multi-channel analog-to-digital converter sampling structure, judges the channel status based on the fluctuation amplitude and trend changes, and if the stability condition is not met, it switches the control flow to the edge computing processing structure, records the channel identifier and switching signal, and generates main control switching record information.

[0007] The voltage behavior module calls the channel identified by the main control switching record information, extracts periodic voltage data from the voltage output interface, judges the offset status based on the voltage extreme value changes of multiple cycles, and outputs a channel prompt signal if the conditions are met, generating a voltage offset indication signal.

[0008] The current drive module calls the corresponding channel of the voltage offset indication signal, realizes voltage to current conversion through a voltage to current circuit with BJT, extracts the current drive gain parameter from the digital-to-analog conversion structure, determines whether correction is needed based on the difference from the set value, and if the condition is met, completes the adjustment and records the correction magnitude, generating drive gain correction magnitude information.

[0009] The shielding path module calls the channel in the drive gain correction amplitude information, extracts the direction sensing signal in the electromagnetic interference shielding grounding structure, determines the main direction of interference based on the comparison result of interference intensity between directions, activates the direction path and marks the number when the condition is met, and generates a shielding path conduction direction label.

[0010] As a further embodiment of the present invention, the master control switching record information includes channel identifier, switching signal, and master control judgment label; the voltage offset indication signal includes channel prompt signal, voltage extreme value change label, and voltage offset status label; the drive gain correction amplitude information includes parameter adjustment value, gain change amount, and correction registration label; and the shielding path conduction direction label includes direction sensing number, interference main direction identifier, and path on / off status.

[0011] As a further aspect of the present invention, the main control scheduling module includes:

[0012] The data acquisition submodule acquires the channel sample values ​​of the multi-channel analog-to-digital converter in a continuous period, constructs a periodic sampling structure, extracts the data changes between adjacent weeks of the channel, establishes a set of channel change characteristics based on the changes in the magnitude and trend of data changes, and generates the channel fluctuation trend quantity.

[0013] The status judgment submodule calls the changing characteristic value in the channel fluctuation trend quantity, filters and identifies the channel data status according to the set channel stability threshold standard, summarizes the channel number information of abnormal data fluctuation, generates the channel status judgment result, and provides it to the voltage behavior module for correction.

[0014] The switching record submodule sets the corresponding master control switching flag parameters based on the channel number information in the channel status determination result, constructs the pairing relationship between the channel identification code and the switching flag, summarizes and organizes them into a record structure, and generates master control switching record information.

[0015] As a further aspect of the present invention, the voltage behavior module includes:

[0016] The channel identification submodule calls the identified channel in the master control switching record information, matches the channel record with the master control identification parameters, extracts the channel number, status value and associated marker content corresponding to the switching time, and generates a set of identified channel numbers;

[0017] The voltage extraction submodule extracts the periodic voltage data corresponding to the channel number in the voltage output interface according to the identification channel number set, and establishes the voltage extreme value sequence corresponding to the channel based on the voltage change range in multiple consecutive periods to obtain the periodic extreme value change coefficient.

[0018] The offset judgment submodule determines whether the difference range between adjacent periods in the channel extreme value sequence exceeds the offset judgment benchmark value based on the period extreme value change coefficient. It marks the channel number that meets the condition, extracts the prompt signal number, combines the offset information, and generates a voltage offset indication signal.

[0019] As a further aspect of the present invention, the current driving module includes:

[0020] The channel calling submodule obtains the digital-to-analog conversion structure associated with the channel based on the corresponding channel in the voltage offset indication signal, calls the driving gain parameter at the corresponding position in the structure, locates and extracts the parameter through the channel identifier, and generates the current value of the driving gain.

[0021] The gain determination submodule calls the previously set drive gain reference parameter based on the current value of the drive gain, and determines whether there is a need for correction by combining the difference between the current value and the reference value, and obtains the drive gain difference rate.

[0022] The amplitude registration submodule, in response to the drive gain difference rate, calls the channel identifier and the current drive gain parameter, adjusts the drive gain setting value according to the difference, records the change amplitude and channel information, and generates drive gain correction amplitude information.

[0023] As a further aspect of the present invention, the shielding path module includes:

[0024] The drive gain rejection submodule obtains the drive gain correction amplitude information, identifies the amplitude data of the channel, filters the channel number based on the preset masking gain threshold, and generates a sequence of available channel numbers.

[0025] The direction sensing extraction submodule calls the available channel number sequence to extract the direction sensing signal corresponding to the channel, compares the sensing amplitude data with the direction reference signal, determines the interference intensity relationship between directions, and generates an interference direction intensity difference matrix.

[0026] The path conduction labeling submodule filters out directional paths whose interference intensity meets the conduction conditions based on the interference direction intensity difference matrix, identifies the corresponding path number, summarizes the number information and records the direction, and generates shielded path conduction direction labels.

[0027] As a further aspect of the present invention, the shielding gain threshold is a preset numerical parameter used to determine whether the driving gain of the channel is within an acceptable range. It is used to filter out abnormal or highly interfering channels to ensure the accuracy and robustness of subsequent directional sensing signals.

[0028] The sensing amplitude data refers to the signal strength or amplitude value that can be sensed by the available channel, which is used to reflect the presence and intensity of external directional interference signals.

[0029] As a further aspect of the present invention, the system further includes:

[0030] The output verification module outputs a signal using a constant frequency reference source based on the path direction in the shielded path conduction direction label. The edge computing processing structure extracts the stability parameters of the current channel and compares them with the existing channel status for verification. When the consistency standard is met, the path is marked as a stable output, and a signal path stability status label is generated.

[0031] The signal path stability status marker includes path stability label, channel consistency result, and stability parameter comparison result.

[0032] As a further aspect of the present invention, the output verification module includes:

[0033] The path direction recognition submodule obtains the path direction information in the shielded path conduction direction label, calls the constant frequency reference source to output the signal to the path channel, monitors the channel response value and performs position mapping with the path direction data, establishes a channel mapping relationship by combining the path direction mark in the label, and generates a direction mapping position value.

[0034] The edge signal extraction submodule, based on the direction mapping position value, calls the signal sample of the constant frequency reference source, collects the edge response parameters of the corresponding channel in the stable phase, performs unified processing on the parameter items, extracts the response characteristics of the channel under the action of the reference signal, and generates the channel response stability coefficient.

[0035] The path stability judgment submodule calls the existing state record value of the corresponding channel according to the channel response stability coefficient, extracts the corresponding response feature item for difference processing, performs interval judgment in combination with the path stability judgment benchmark value, verifies the channel state that meets the judgment conditions, and generates a signal path stability state mark.

[0036] As a further aspect of the present invention, the constant frequency reference source output signal refers to a reference signal source that outputs at a fixed frequency, which is used as an excitation signal for channel response characteristic testing.

[0037] The edge response parameters of the stable phase refer to the characteristic parameters that reflect the transient response characteristics of the channel, which are collected at the rising and / or falling edges of the waveform when the channel enters the stable response phase after receiving a constant frequency signal.

[0038] The path stability judgment benchmark value is a threshold or reference range used for stability judgment. It defines the acceptable deviation range of the channel response and is used to compare whether the response characteristics are within the acceptable range.

[0039] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0040] In this invention, by judging the fluctuations and trend changes of multi-cycle sampling data, dynamic identification of channel stability and linkage switching of high-performance processing structures are realized, improving real-time response and adaptability. Offset status is identified and prompt signals are output based on the periodic changes of voltage extreme values, enhancing the accuracy of abnormal voltage perception. Drive gain is analyzed and corrected based on historical parameter differences, forming a feedback closed loop and improving the stability control capability of the drive layer. The path is activated by comparing the directional interference intensity and generating a unique label, improving the accuracy of path identification in complex interference environments. Channel state consistency is compared based on path direction, and stable path output is marked to ensure reliable consistency of signal output. The whole system constructs a highly adaptive signal control link with a closed loop of judgment, correction, isolation and verification. Attached Figure Description

[0041] Figure 1 This is a system flowchart of the present invention;

[0042] Figure 2 This is a system block diagram of the present invention;

[0043] Figure 3 This is a flowchart of the main control scheduling module of the present invention;

[0044] Figure 4 This is a flowchart of the voltage behavior module of the present invention;

[0045] Figure 5 This is a flowchart of the current drive module of the present invention;

[0046] Figure 6 This is a flowchart of the shielding path module of the present invention;

[0047] Figure 7 This is a flowchart of the output verification module of the present invention. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0049] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] Please see Figure 1 and Figure 2 A portable 6.5-bit arbitrary signal source includes:

[0051] The main control scheduling module extracts multiple cycles of sampling data from the multi-channel analog-to-digital converter sampling structure, judges the channel status based on the data fluctuation amplitude and trend change between cycles, and when the stability condition is not met, the control flow switches to the edge computing processing structure, records the channel identifier and switching signal, and generates main control switching record information.

[0052] The voltage behavior module calls the channel identified by the main control switching record information, extracts periodic voltage data from the voltage output interface, judges the offset status based on the voltage extreme value changes of multiple cycles, and outputs a channel prompt signal if the conditions are met, generating a voltage offset indication signal.

[0053] The current drive module calls the corresponding channel in the voltage offset indication signal, realizes voltage to current conversion through a voltage to current circuit with BJT, extracts the drive gain parameters from the digital-to-analog conversion structure, judges the correction requirements based on the difference between the current parameters and the previous settings, adjusts the parameters and registers the amplitude when the conditions are met, and generates drive gain correction amplitude information.

[0054] The shielding path module calls the channel in the drive gain correction amplitude information, extracts the directional sensing signal in the electromagnetic interference shielding grounding structure, determines the main direction of interference based on the comparison of interference intensity between directions, activates the directional path and marks the number when the conditions are met, and generates a shielding path conduction direction label.

[0055] The output verification module outputs a signal based on the path direction in the shielded path conduction direction label, using a constant frequency reference source. The edge computing processing structure extracts the stability parameters of the current channel and compares them with the existing channel status for verification. When the consistency standard is met, the path is marked as a stable output, and a signal path stability status label is generated.

[0056] The master control switching record information includes channel identifier, switching signal, master control judgment label; voltage offset indication signal includes channel prompt signal, voltage extreme value change label, voltage offset status label; drive gain correction amplitude information includes parameter adjustment value, gain change amount, correction registration label; shielding path conduction direction label includes direction sensing number, interference main direction identifier, path on / off status; signal path stability status mark includes path stability label, channel consistency result, stability parameter comparison result.

[0057] Please see Figure 3 The main control and scheduling module includes:

[0058] The data acquisition submodule acquires the channel sample values ​​of the multi-channel analog-to-digital converter in a continuous period, constructs a periodic sampling structure, extracts the data changes between adjacent weeks of the channel, establishes a set of channel change characteristics based on the changes in the magnitude and trend of data changes, and generates the channel fluctuation trend quantity.

[0059] In the data acquisition submodule, the sampling frequency is first set to, for example, 1000Hz, the number of channels to, for example, 4, and the number of periods to, for example, 10. After the acquisition command is initiated, the analog-to-digital converter, under the main control command, samples each channel according to the set frequency. Each period completes one full-channel polling acquisition, and the voltage values ​​of all channels in each period are stored sequentially to form a matrix structure. Each column corresponds to one period, and each row is the sampling sequence of one channel. Taking channel 1 as an example, its voltage values ​​from period 1 to period 10 form a time series, such as 1.80V, 1.85V, 1.82V, etc. Next, the voltage difference between adjacent periods is extracted, and the voltage change of each channel between period 2 and period 1, and period 3 and period 2 is calculated. For example, if the voltage of channel 2 in periods 1 to 3 is 2.10V, 2.12V, and 2.15V respectively, then its two variation values ​​are 0.02V and 0.03V, forming a continuous variation sequence. Trend analysis is performed on the fluctuation sequence using a three-value moving average to determine whether the trend exhibits a continuous upward, downward, or fluctuating pattern. Then, information such as the number of changes, average change, and maximum amplitude are statistically analyzed for each channel. For example, channel 3 shows three changes exceeding 0.04V in 10 periods, with a maximum change of 0.12V; its average change is calculated to be 0.04V. Based on these results, a channel feature set is constructed, including the number of fluctuations, average change, and maximum change. These features are then combined to generate the fluctuation trend value for each channel. For instance, if channel 4 shows four changes, an average amplitude of 0.03V, and a maximum of 0.09V, then channel 4 can be considered to have a strong fluctuation trend, forming a trend value indicator for subsequent use.

[0060] The status judgment submodule calls the changing characteristic value in the channel fluctuation trend quantity, filters and identifies the channel data status according to the set channel stability threshold standard, summarizes the channel number information of abnormal data fluctuation, generates the channel status judgment result, and provides it to the voltage behavior module for correction.

[0061] In the state judgment submodule, three key features are first extracted from the fluctuation trend of each channel: average fluctuation amplitude, maximum fluctuation amplitude, and number of fluctuations. These are then compared with preset stability thresholds. Taking a certain set of settings as an example, channels with an average amplitude not exceeding 0.02V, a maximum amplitude not exceeding 0.05V, and a number of fluctuations not exceeding 2 are considered stable. Channel 1, with an average fluctuation of 0.015V, a maximum of 0.04V, and a number of fluctuations of 1.5, meets all the criteria; Channel 4, with an average of 0.03V, a maximum of 0.06V, and a number of fluctuations of 3, exceeds all three criteria. The state judgment uses a logical comparison method, marking channels that meet all criteria as stable and others as unstable. After summarizing all results, an abnormal channel list is generated by listing the unstable channel numbers. For example, if channels 2 and 3 are stable, and channel 4 is unstable, the final output will mark channel 4 as an abnormal channel. The threshold standard is set based on a large number of historical sampling statistics. For example, in 1000 samples, channels with an average change value of less than 0.02V and a maximum change of less than 0.05V did not show abnormal status in more than 96% of cases. This was determined as the judgment benchmark. At the same time, reasonable ranges were set, such as an average amplitude of 0.015V to 0.025V, a maximum change of 0.045V to 0.06V, and a fluctuation number of 1.5 to 3 times, as adjustment limits.

[0062] The switching record submodule sets the corresponding master control switching flag parameters based on the channel number information in the channel status determination result, constructs the pairing relationship between the channel identification code and the switching flag, summarizes and organizes them into a record structure, and generates master control switching record information.

[0063] In the switching record submodule, based on the status judgment results, the status flag of each channel is checked. If it is unstable, the master control switching flag is set to 1; if it is stable, it is set to 0. A unique identification code is generated for each channel. The identification code consists of the acquisition module number and the channel number. For example, if the acquisition board number is 01 and the channel number is 04, the identification code is B01CH04. If channel 4 is determined to be unstable, its switching flag is set to 1, and its identification code is B01CH04, forming a corresponding record. All channel records are summarized one by one; for example, CH01 is 0, CH02 is 0, CH03 is 0, and CH04 is 1, ultimately forming a complete record structure. This structure consists of pairs of identification codes and switching flags, used for various logical switching calls within the system. The entire process does not involve complex calculations; it directly generates paired information based on the channel status and organizes it into structured data for unified management. This information can be used for fault management and subsequent module function responses.

[0064] Please see Figure 4 The voltage behavior module includes:

[0065] The channel identification submodule calls the identified channel in the master control switching record information, matches the channel record with the master control identification parameters, extracts the channel number, status value and associated marker content corresponding to the switching time, and generates a set of identified channel numbers;

[0066] The channel identification submodule needs to filter raw data records containing channel number, switching time, and master control identifier parameters from the switching record information of the master control system. The channel identifier is usually embedded in the record field. Master control switching event data can be filtered out by keywords. For example, if an event occurs at 12:00:05 where channel 5 is switched from master control A to master control B, the switching record will contain fields such as timestamp 20250722120005, original control unit A, target control unit B, and channel number 5. Then, the master control identifier in the record needs to be matched with the master control identifier in the current system. If the switching target identifier is consistent with the current master control, the channel is set as the identification channel. Then, the switching time, current status value such as Active, Idle, or Busy of the channel, and the label text in the channel tag field such as "cooling system control line" or "signal amplification path" are read. This information is classified and summarized by channel number to generate an identification channel number set. The identification channel number set is a key-value pair structure. Each number corresponds to a combination of switching time, status value, and label information, which is used for subsequent voltage data processing.

[0067] The voltage extraction submodule extracts the periodic voltage data corresponding to the channel number from the voltage output interface based on the identified channel number set, and establishes the voltage extreme value sequence corresponding to the channel based on the voltage change range within multiple consecutive periods to obtain the periodic extreme value change coefficient.

[0068] The voltage extraction submodule, based on the channel number in the identification channel number set, enters the voltage output interface module to extract periodic voltage data. The period is usually set to 10ms, and 100 sets of data can be obtained per second in continuous recording. During the extraction process, the voltage data is indexed and retrieved according to the channel number. The extracted voltage data is a continuous voltage value sequence. Then, within each period, the voltage data sets are traversed, and the maximum and minimum values ​​are recorded respectively to form an extreme value sequence. Each set of data in the extreme value sequence contains the upper and lower limits of the voltage within that period. Further, by comparing the difference between extreme values ​​of adjacent periods with a set reference value, a change coefficient sequence is established. The reference value is generally the channel calibration voltage, such as 3.3V. If the maximum value of a period is 3.32V and the minimum value is 3.20V, the difference is 0.12V, then its change coefficient is 0.12 divided by 3.3, which is approximately 3.6%. Through multi-period ratio calculation, an extreme value change coefficient sequence containing multiple periods is formed, which prepares the basic data for offset analysis.

[0069] The offset judgment submodule determines whether the difference between adjacent periods in the channel extreme value sequence exceeds the offset judgment benchmark value based on the period extreme value change coefficient. It marks the channel number that meets the condition, extracts the prompt signal number, combines the offset information, and generates a voltage offset indication signal.

[0070] The offset judgment submodule uses a sequence of periodic extreme value change coefficients for processing. It calculates the difference in change amplitude between every two adjacent periods, using an absolute difference method to obtain the degree of change between periods. The baseline value is 1.5%, which can be set with reference to the maximum change difference of the channel during undisturbed operation. During the calibration phase, if the maximum difference within 20 consecutive periods does not exceed 1.2%, the baseline value is set to 1.5% as the judgment criterion. In the judgment process, if the change coefficients of periods 5 and 6 are 3.1% and 4.4% respectively, the difference is 1.3%, which is less than the baseline value and does not constitute an offset. If the change coefficients of periods 6 and 7 are 4... The difference between 4% and 6.1% is 1.7%, which is greater than the baseline value, constituting an offset. This channel is identified as an abnormal channel, and its number and cycle number are recorded. Then, the direction of change is combined to determine whether it is an upward or downward offset. If the current cycle is higher than the previous cycle, it is marked as UP, otherwise it is marked as DOWN. At the same time, the channel number, cycle number, offset direction, and specific percentage change are combined to form an offset prompt signal. For example, if channel 5 is offset by 1.7% in the 7th cycle, "P5-C7-UP(1.7%)" is generated. Then, all the identification signals that meet the offset conditions are arranged in sequence, and the final output is a continuous prompt sequence for use by the upper-level module for alarm or recording.

[0071] Please see Figure 5 The current drive module includes:

[0072] The channel calling submodule obtains the digital-to-analog conversion structure associated with the channel based on the corresponding channel in the voltage offset indication signal, calls the driving gain parameter at the corresponding position in the structure, locates and extracts the parameter through the channel identifier, and generates the current value of the driving gain.

[0073] The specific calculation formula for locating and extracting the driving gain parameter at the corresponding position in the call structure using the channel identifier is as follows:

[0074] ;

[0075] Calculate the current value of the drive gain;

[0076] in, Representing the The current value of the channel's driving gain at the current structural position. Representing the The ideal input voltage value referenced in the item. Representing the Item in the channel The actual detected voltage offset value, Representative Channel In the The gain output voltage after amplification unit when the input is given. Indicates channel The average voltage after passing through the multiplexer Indicates channel The preset reference voltage in the associated digital-to-analog converter structure, Indicates channel The minimum compensation error voltage introduced by device noise and nonlinear residuals. Indicates channel The dynamic drift correction term of the drive circuit This represents the total number of reference points involved in the calculation;

[0077] First, monitor and obtain the reference voltage for the ADC and amplification unit. The range is specified in the datasheet, with typical values ​​ranging from 0 to 3.3 volts for a 12-bit ADC. The value is determined by reading the average value during the monitoring process.

[0078] Offset voltage monitoring instrument detection in the same channel Through multiple sampling and quantization, the mean value during the sample period was set to 0.002 volts;

[0079] The amplified output voltage is acquired in real time from the output of the power amplifier. The typical monitoring range is 0.1 to 2 volts; the average sampling value in this example is 1.5 volts.

[0080] Average voltage of channel i after multiplexing The volts were obtained by the arithmetic mean of 100 measurements taken within the sampling period.

[0081] Reference voltage The input voltage is preset by the ADC structure and determined by the chip specifications to be 2.5 volts.

[0082] Error compensation voltage Compensated by the manufacturer's error specifications and actual temperature drift, the monitored value at room temperature is 0.005 volts.

[0083] Dynamic drift correction term The current value is calculated in real time using a combination of temperature sensors and a drift model;

[0084] Total number of samples The sampling window length is set to 10;

[0085] The formula calculation process is as follows:

[0086] Find the weighted sum of the products of each voltage difference:

[0087] Substituting the values ​​into the equation:

[0088] ;

[0089] Assuming all j-terms have the same value, then it equals:

[0090] ;

[0091] Calculate the denominator:

[0092] ;

[0093] The third step is to take the absolute value and add a drift term:

[0094] First, calculate the absolute value ratio:

[0095] ;

[0096] Added later have to:

[0097] ;

[0098] The result indicates that the current value of the drive gain generated at the current position of the channel is 0.8765 volts, which, as the result of the step execution, represents the actual output voltage of the channel drive gain.

[0099] The formula's operational logic is based on the principles of error cancellation and deviation amplification control in signal processing. First, the difference between the reference voltage and the offset voltage reflects the purity of each sample input signal. This difference reflects the deviation of the actual sampling error from the ideal signal. Then, this voltage difference is multiplied by the difference between the amplified voltage and the channel average voltage. This aims to link the signal offset effect with the gain deviation, enhancing the response weight to abnormal offsets. The overall driving offset trend is formed by summing the weighted products of all samples. The denominator is square-rooted based on the deviation between the channel reference voltage and the channel multiplexing average voltage. This normalizes the scale of the total offset energy in the numerator, avoiding imbalances caused by differences in gain scales between different channels. Simultaneously, an error compensation voltage is superimposed to correct the computational basis offset caused by equipment quantization instability. The overall square root is used to balance scale effects and improve sensitivity. Finally, a drift correction term is added to dynamically adjust the systematic offset trend between different channels caused by temperature and time, ensuring the timing stability of the driving gain output and the adaptive compensation capability of the structure.

[0100] The current value of the drive gain represents the adjustment amount of the amplification output capability after actual sampling and signal processing under a specific channel structure. It is a real-time indicator that measures the amplification strength of the current drive unit in response to the input signal. This value comprehensively considers the error difference between the reference input voltage and the actual offset, the amplification amplitude change between the output of the amplification unit and the average voltage of the channel, as well as the static deviation and dynamic drift of the channel itself. It reflects the gain adjustment state of the drive unit for the signal under a specific environment and structural configuration. The higher the value, the stronger the amplification capability of the current channel for the input signal, and vice versa. It is used as the basis for gain scheduling in subsequent power control or dynamic equalization processes.

[0101] The gain determination submodule calls the previously set drive gain reference parameters based on the current value of the drive gain, and determines whether there is a need for correction by combining the difference between the current value and the reference value, and obtains the drive gain difference rate.

[0102] First, the reference gain value configured in the channel setting stage is read. The reading process is mapped and located through the channel identifier. For example, for channel CH03, the corresponding reference gain value is 0.800, and the current acquisition value is 0.782. After comparing the two, the difference between the two values ​​is calculated to be 0.018. This difference value is converted into a difference rate and used to determine whether to enter the correction process. In the set rules, if the difference rate exceeds 1.5%, the correction process needs to be started. At this time, the currently calculated difference rate result is compared with the threshold. Since the current difference rate is 2.25%, which exceeds the set standard, the result is that there is a need for correction, and the current driving gain difference rate of this channel is 2.25%.

[0103] The amplitude registration submodule, based on the drive gain difference rate, calls the channel identifier and the current drive gain parameter, adjusts the drive gain setting value according to the difference, records the change amplitude and channel information, and generates drive gain correction amplitude information.

[0104] After obtaining the drive gain difference rate, the amplitude registration submodule relocates the current drive gain value through the channel identifier and applies a gain correction strategy. According to the pre-set gain adjustment rules, the difference rate is converted into a specific gain increment. For example, if each 1% difference corresponds to a gain adjustment of 0.01 units, and the current difference rate is 2.25%, the corresponding adjustment amplitude is 0.0225 units. The original drive gain value is 0.782, and the adjusted gain setting value is 0.8045. Then, the adjustment behavior is fully registered, and the recorded information includes the channel number CH03, the original gain value 0.782, the adjusted gain value 0.8045, the adjustment amplitude 0.0225, and the difference rate 2.25%. All data is written into the drive gain correction registration table in a standardized format to form a drive gain correction amplitude information structure for subsequent system strategy calls or historical traceability.

[0105] Please see Figure 6 The path shielding module includes:

[0106] The drive gain elimination submodule obtains the drive gain correction magnitude information, identifies the channel magnitude data, filters channel numbers based on a preset masking gain threshold, and generates a sequence of available channel numbers.

[0107] When extracting the drive gain correction amplitude information, the drive gain removal submodule first samples the signal amplitude of all channels in real time. After continuously collecting 30 cycles of peak signal data, it calculates the average amplitude of each channel as the correction benchmark. Then, it compares the current amplitude value with this benchmark value to obtain the correction amplitude of each channel. Subsequently, it performs amplitude normalization processing on each channel to obtain an amplitude value under a unified dimension, and compares it with the set shielding gain threshold. If the normalized amplitude of a channel is lower than the threshold of 0.6, the channel is determined to be abnormal and its number is removed from the channel sequence. For example, if there are 8 channels, and the normalized amplitudes of channels 3, 5, and 7 are 0.52, 0.48, and 0.55 respectively, all less than the threshold of 0.6, these 3 channels will be removed, and the remaining channels will be 1, 2, 4, 6, and 8. This process is applicable to multi-channel signal processing equipment, such as the antenna array amplitude verification stage for millimeter-wave radar. This method can quickly identify failed or weak response channels while the equipment is in operation and provide available channel number information for subsequent processing stages.

[0108] The direction sensing extraction submodule calls the available channel number sequence to extract the direction sensing signal corresponding to the channel. Based on the comparison between the sensing amplitude data and the direction reference signal, it determines the interference intensity relationship between directions and generates an interference direction intensity difference matrix.

[0109] The direction sensing extraction submodule receives the filtered channel number sequence and extracts the corresponding direction sensing signal for each channel one by one. Typically, each channel acquires a continuous amplitude time-series signal. By performing frequency domain analysis on these signals, the amplitude information of its main frequency components can be extracted as the direction sensing amplitude of that channel. The direction sensing amplitudes of all channels are then compared with a pre-set direction reference value, for example, 0.85, representing the average direction response level of each channel under normal conditions. During the comparison, the difference in sensing amplitude between any two channels is calculated, reflecting the signal strength relationship between the two directions. For example, the sensing amplitude of channel 1 is 0.78, and channel 2 is 0.91, with a difference of 0.13. This method allows for the calculation of differences between each channel pairwise, forming a matrix structure of interference direction intensity differences between channels. The matrix size depends on the number of channels. Taking a radar array as an example, 5 channels can generate 25 direction difference terms for subsequent analysis of interference relationships between channels.

[0110] The path conduction labeling submodule filters directional paths whose interference intensity meets the conduction conditions based on the interference direction intensity difference matrix, identifies the corresponding path number, summarizes the number information and records the direction, and generates shielded path conduction direction labels.

[0111] The specific formula for calculating the corresponding path number is as follows:

[0112] ;

[0113] Calculate path strength index It is used to filter directional paths whose interference intensity meets the conduction conditions, identify the corresponding path number, summarize the number information and record the direction, and generate a shielded path conduction direction label.

[0114] in, Representing the The path in the first... Traffic intensity index in each direction, Representing the The path is at the Direction down The difference in interference intensity from the direction of the interference source. Representing the The path is at the The average value of the difference in interference intensity from all interference sources in the specified direction. Representing the The path is at the Direction down The weighted directional interference influence factor of the interference source. Representing the The path is at the Direction down The equivalent spatial redundancy factor corresponding to the interference source This represents the total number of interference sources encountered by the path in that direction. Represents the path index number. Represents the direction index number. This is the index number of the interference source. Represents the weighted factor mapping index;

[0115] parameter The interference intensity is calculated from the directional difference between the monitored value and the reference signal intensity. Taking direction j=1, path i=1, and interference sources k=1, 2, and 3 as an example, the collected interference intensity values ​​are as follows:

[0116] Interference source 1: ;

[0117] Interference source 2: ;

[0118] Interference source 3: ;

[0119] Reference signal strength set to The difference is:

[0120]

[0121]

[0122] ;

[0123] Average difference in direction:

[0124] ;

[0125] parameter The weighted directional interference influence factor of the interference source is represented by the following quantification rules: Based on actual observation experience of interference levels, it is normalized and exponentially enhanced by combining the ranging response model of electromagnetic intensity with the duty cycle of the source signal.

[0126] The interference source level value is obtained by calculating the proportion of the interference intensity integral:

[0127] Source 1: accounting for 19%, with an original weight of 0.19;

[0128] Source 2: 10% share, original weight 0.10;

[0129] Source 3: accounts for 26%, with an original weight of 0.26;

[0130] The exponential mapping coefficient is set to λ=1.5, which is derived from the weighted amplification standard of interference amplitude decreasing with physical distance, and is obtained from experimental statistical analysis.

[0131] The calculation yields:

[0132]

[0133]

[0134] ;

[0135] parameter The spatial redundancy factor is constructed based on the density of available conduction channels around the path and the overlap coefficient, and the quantification rules are as follows:

[0136] If the number of redundant channels in the region where source 1 is located is 2, and the maximum number of channels in the region is 5, then the redundancy factor is:

[0137] ;

[0138] The redundancy factor of the region where source 2 is located is: ;

[0139] Source 3 region has sparse channels, with only 1 redundant channel: ;

[0140] Substitute each term into the formula and calculate:

[0141] Molecular part:

[0142] ;

[0143] Denominator part:

[0144] ;

[0145] Calculate the following items:

[0146] Source 1: ;

[0147] Source 2: ;

[0148] Source 3: ;

[0149] The sum is: ;

[0150] Prescription: ;

[0151] Final formula value:

[0152] ;

[0153] The results show that the conductivity index of path 1 in direction 1 is 1.341, indicating that under all interference source conditions, after comprehensively considering factors such as interference intensity difference, interference level influence, and regional spatial redundancy, it meets the conductivity probability requirements. This value can be used as the basic criterion for path conductivity judgment and participate in subsequent path numbering and direction label generation.

[0154] The formula's operational logic is based on the comprehensive evaluation principle of path interference response intensity. The numerator reflects the total interference contribution of all interference sources in the path direction by multiplying the difference in directional interference intensity of each interference source in the path and direction dimensions with its weighted influence factor and then summing the results. The multiplication reflects the coupling relationship between interference intensity and influence level, and the summation integrates the superposition effect of multi-source interference. The denominator introduces square and square root operations, and its structure constructs a correction factor for the dispersion of interference factors. The weighted square serves as the basic intensity quantity, and the weighted magnitude of the directional interference intensity difference after deviating from the average value reflects the local imbalance. By dividing the weighted absolute deviation of these terms by the spatial redundancy factor and summing the results before taking the square root, a normalization process for path elasticity and interference fluctuation is introduced. This ensures that the final calculated index value not only reflects the interference intensity itself but also dynamically adjusts its stability and spatial redundancy capability. The overall structure forms a ratio judgment model for path conduction feasibility.

[0155] The path connectivity index is used to measure whether a specific path has the comprehensive ability to achieve electromagnetic conduction in an interference environment under a specific direction. This index comprehensively considers multiple key factors such as the difference in directional interference intensity, the level of interference source influence, and path spatial redundancy. By integrating the weighted cumulative effect of interference intensity and the impact of interference fluctuation on path stability, a normalized evaluation value for conduction capability is constructed. The higher the value, the easier it is for the path to maintain a stable and effective shielded channel under the current direction. It also has higher passage potential and direction selection priority. It is suitable as a basis for judging core aspects such as path selection, channel marking, and direction guidance.

[0156] Please see Figure 7 The output verification module includes:

[0157] The path direction recognition submodule obtains the path direction information from the shielded path conduction direction label, calls the constant frequency reference source to output the signal and loads it into the path channel, monitors the channel response value and performs position mapping with the path direction data, establishes the channel mapping relationship by combining the path direction mark in the label, and generates the direction mapping position value.

[0158] The path direction recognition submodule first extracts the conduction direction information from the direction field in the channel labels. This information includes the channel start point, end point, and direction vector. For example, the path label numbered P1 runs from node A to B. After parsing, a direction index table is formed. Then, a constant frequency signal source outputs a 100kHz sine wave signal, which is sequentially applied to each channel. After the signal is applied, voltage sampling is performed at the other end of the channel. The sampling window is 100ms, and the sampling frequency is 10kHz, thus obtaining the output response voltage sequence of each channel. The channel response value is used to determine the signal's passage capability under a specific loading direction by comparing the positive and negative signals. The magnitude of the reverse response value identifies the dominant direction. For example, if a channel has a voltage of 1.5V in the A→B direction and 0.2V in the B→A direction, then A→B is determined to be the dominant direction. The direction judgment criterion is that the ratio of the difference between the positive and reverse response values ​​to the positive value is greater than 60%. This ratio is the direction response difference ratio. The judgment result is merged with the original direction label, and the conduction direction of each path and its corresponding start and end position numbers, response voltage values, direction difference ratios, and other information are recorded to form a complete channel direction mapping table. This mapping table serves as the basic data source for subsequent edge signal acquisition and channel judgment, and finally completes the generation of direction mapping position values.

[0159] The edge signal extraction submodule uses the orientation mapping position value to call the signal sample of the constant frequency reference source, collects the edge response parameters of the corresponding channel in the stable phase, performs unified processing on the parameter items, extracts the response characteristics of the channel under the action of the reference signal, and generates the channel response stability coefficient.

[0160] After acquiring the direction mapping position value, the edge signal extraction submodule extracts the corresponding channel's signal sample from the reference source based on this mapping. The corresponding signal is the channel's output waveform in a stable state. Generally, data from 20ms to 80ms after signal loading is selected as the stable phase signal. During this phase, the channel output is continuously sampled in 1ms increments to form a voltage sequence containing multiple data points. The sampled sequence is first normalized to its maximum value, making the maximum response amplitude standardized to 1. Subsequently, the voltage difference between adjacent sampling points is statistically analyzed to examine the signal slope change, and the standard deviation of all differences is used as the standard deviation of the signal. The characteristics of signal edge changes are analyzed, and the average amplitude of the entire sequence is calculated as an indicator of stability, representing the fluctuation level and response level of the channel output, respectively. If the slope standard deviation is less than 0.05 and the average amplitude is greater than 85%, the response is considered stable. These two indicators are combined into a channel response stability coefficient through a weighted method, with weights set to 0.6 and 0.4, respectively, acting on the slope and average amplitude. Assuming that the slope change of a certain channel is 0.03 and the average amplitude is 90%, the stability coefficient is 0.942. The calculation results of all channels are uniformly stored in the response stability database as a state reference.

[0161] The path stability judgment submodule calls the existing state record value of the corresponding channel according to the channel response stability coefficient, extracts the corresponding response feature items for difference processing, performs interval judgment in combination with the path stability judgment benchmark value, verifies the channel state that meets the judgment conditions, and generates a signal path stability state marker.

[0162] The path stability judgment submodule reads the response stability coefficient of the current channel from the stability database and extracts its historical state values. Generally, the most recent 10 records are selected to calculate the historical average or weights are set according to time decay, with closer records having higher weights. For example, the first record in chronological order is weighted as 1, the second as 0.5, and so on. The obtained weighted average result is used as the historical stable state value of the current channel. The current value is compared with the historical value. If the difference is less than 5%, the state is considered stable. If the difference is greater than the benchmark, the channel state is considered to have changed. In addition, the standardized position of the current channel's stability coefficient in the overall channels is calculated. The overall mean and standard deviation are introduced to convert the score to reflect the channel's stability level in the overall system. This score is used to distinguish between three stability levels: "high", "medium", and "low". For example, a value higher than 1.5 times the overall mean is a high level, a value lower than 1.5 times the standard deviation is a low level, and others are medium levels. Finally, a stable state label is formed, which includes fields such as channel number, current coefficient, historical mean, stability difference, and stability level, and is recorded in the stability state table for subsequent modules to call.

[0163] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A portable 6.5-bit arbitrary signal source, comprising a system consisting of multiple modules, characterized in that: The system includes: The main control scheduling module extracts periodic sampling data from the multi-channel analog-to-digital converter sampling structure, judges the channel status based on the fluctuation amplitude and trend changes, and if the stability condition is not met, it switches the control flow to the edge computing processing structure, records the channel identifier and switching signal, and generates main control switching record information. The voltage behavior module calls the channel identified by the main control switching record information, extracts periodic voltage data from the voltage output interface, judges the offset status based on the voltage extreme value changes of multiple cycles, and outputs a channel prompt signal if the conditions are met, generating a voltage offset indication signal. The current drive module calls the corresponding channel of the voltage offset indication signal, realizes voltage to current conversion through a voltage to current circuit with BJT, extracts the current drive gain parameter from the digital-to-analog conversion structure, determines whether correction is needed based on the difference from the set value, and if the condition is met, completes the adjustment and records the correction magnitude, generating drive gain correction magnitude information. The shielding path module calls the channel in the drive gain correction amplitude information, extracts the direction sensing signal in the electromagnetic interference shielding grounding structure, determines the main direction of interference based on the comparison result of interference intensity between directions, activates the direction path and marks the number when the condition is met, and generates a shielding path conduction direction label. The current drive module includes: The channel calling submodule obtains the digital-to-analog conversion structure associated with the channel based on the corresponding channel in the voltage offset indication signal, calls the driving gain parameter at the corresponding position in the structure, locates and extracts the parameter through the channel identifier, and generates the current value of the driving gain. The gain determination submodule calls the previously set drive gain reference parameter based on the current value of the drive gain, and determines whether there is a need for correction by combining the difference between the current value and the reference value, and obtains the drive gain difference rate. The amplitude registration submodule, in response to the drive gain difference rate, calls the channel identifier and the current drive gain parameter, adjusts the drive gain setting value according to the difference, records the change amplitude and channel information, and generates drive gain correction amplitude information.

2. The portable 6.5-bit arbitrary signal source according to claim 1, characterized in that: The master control switching record information includes channel identifier, switching signal, and master control judgment label; the voltage offset indication signal includes channel prompt signal, voltage extreme value change label, and voltage offset status label; the drive gain correction amplitude information includes parameter adjustment value, gain change amount, and correction registration label; and the shielding path conduction direction label includes direction sensing number, interference main direction identifier, and path on / off status.

3. The portable 6.5-bit arbitrary signal source according to claim 1, characterized in that: The main control scheduling module includes: The data acquisition submodule acquires the channel sample values ​​of the multi-channel analog-to-digital converter in a continuous period, constructs a periodic sampling structure, extracts the data changes between adjacent weeks of the channel, establishes a set of channel change characteristics based on the changes in the magnitude and trend of data changes, and generates the channel fluctuation trend quantity. The status judgment submodule calls the changing characteristic value in the channel fluctuation trend quantity, filters and identifies the channel data status according to the set channel stability threshold standard, summarizes the channel number information of abnormal data fluctuation, generates the channel status judgment result, and provides it to the voltage behavior module for correction. The switching record submodule sets the corresponding master control switching flag parameters based on the channel number information in the channel status determination result, constructs the pairing relationship between the channel identification code and the switching flag, summarizes and organizes them into a record structure, and generates master control switching record information.

4. The portable 6.5-bit arbitrary signal source according to claim 3, characterized in that: The voltage behavior module includes: The channel identification submodule calls the identified channel in the master control switching record information, matches the channel record with the master control identification parameters, extracts the channel number, status value and associated marker content corresponding to the switching time, and generates a set of identified channel numbers; The voltage extraction submodule extracts the periodic voltage data corresponding to the channel number in the voltage output interface according to the identification channel number set, and establishes the voltage extreme value sequence corresponding to the channel based on the voltage change range in multiple consecutive periods to obtain the periodic extreme value change coefficient. The offset judgment submodule determines whether the difference range between adjacent periods in the channel extreme value sequence exceeds the offset judgment benchmark value based on the period extreme value change coefficient. It marks the channel number that meets the condition, extracts the prompt signal number, combines the offset information, and generates a voltage offset indication signal.

5. The portable 6.5-bit arbitrary signal source according to claim 1, characterized in that: The shielding path module includes: The drive gain rejection submodule obtains the drive gain correction amplitude information, identifies the amplitude data of the channel, filters the channel number based on the preset masking gain threshold, and generates a sequence of available channel numbers. The direction sensing extraction submodule calls the available channel number sequence to extract the direction sensing signal corresponding to the channel, compares the sensing amplitude data with the direction reference signal, determines the interference intensity relationship between directions, and generates an interference direction intensity difference matrix. The path conduction labeling submodule filters out directional paths whose interference intensity meets the conduction conditions based on the interference direction intensity difference matrix, identifies the corresponding path number, summarizes the number information and records the direction, and generates shielded path conduction direction labels.

6. The portable 6.5-bit arbitrary signal source according to claim 5, characterized in that: The shielding gain threshold is a preset numerical parameter used to determine whether the driving gain of the channel is within an acceptable range. It is used to filter out abnormal or highly interfering channels to ensure the accuracy and robustness of subsequent directional sensing signals. The sensing amplitude data refers to the signal strength or amplitude value that can be sensed by the available channel, which is used to reflect the presence and intensity of external directional interference signals.

7. The portable 6.5-bit arbitrary signal source according to claim 1, characterized in that: The system also includes: The output verification module outputs a signal using a constant frequency reference source based on the path direction in the shielded path conduction direction label. The edge computing processing structure extracts the stability parameters of the current channel and compares them with the existing channel status for verification. When the consistency standard is met, the path is marked as a stable output, and a signal path stability status label is generated. The signal path stability status marker includes path stability label, channel consistency result, and stability parameter comparison result.

8. The portable 6.5-bit arbitrary signal source according to claim 7, characterized in that: The output verification module includes: The path direction recognition submodule obtains the path direction information in the shielded path conduction direction label, calls the constant frequency reference source to output the signal to the path channel, monitors the channel response value and performs position mapping with the path direction data, establishes the channel mapping relationship by combining the path direction mark in the label, and generates the direction mapping position value. The edge signal extraction submodule, based on the direction mapping position value, calls the signal sample of the constant frequency reference source, collects the edge response parameters of the corresponding channel in the stable phase, performs unified processing on the parameter items, extracts the response characteristics of the channel under the action of the reference signal, and generates the channel response stability coefficient. The path stability judgment submodule calls the existing state record value of the corresponding channel according to the channel response stability coefficient, extracts the corresponding response feature item for difference processing, performs interval judgment in combination with the path stability judgment benchmark value, verifies the channel state that meets the judgment conditions, and generates a signal path stability state mark.

9. The portable 6.5-bit arbitrary signal source according to claim 8, characterized in that: The constant frequency reference source output signal refers to a reference signal source that outputs at a fixed frequency, used as an excitation signal for channel response characteristic testing. The edge response parameters of the stable phase refer to the characteristic parameters that reflect the transient response characteristics of the channel, which are collected at the rising and / or falling edges of the waveform when the channel enters the stable response phase after receiving a constant frequency signal. The path stability judgment benchmark value is a threshold or reference range used for stability judgment. It defines the acceptable deviation range of the channel response and is used to compare whether the response characteristics are within the acceptable range.

Images