Search

CN-122027052-A - Signal transmission and synchronous control method and system of portable machine

CN122027052ACN 122027052 ACN122027052 ACN 122027052ACN-122027052-A

Abstract

The invention discloses a signal transmission and synchronous control method and system of a portable machine, which relate to the technical field of collaborative operation of the portable machine, and aim to evaluate the stability of a current channel through a self-adaptive switching algorithm, scan and switch to an optimal standby channel when the stability is lower than a threshold value so as to realize seamless signal transmission. The invention effectively solves the problems of interference and deviation in high-risk operation scenes through a fusion mechanism of signal switching, time synchronization and task optimization, and finally realizes stable, accurate and efficient collaborative work of a plurality of portable machines, thereby remarkably enhancing the reliability and adaptability of the system in complex environments.

Inventors

  • LUO KAI
  • GUO XING
  • XIAO LIAN

Assignees

  • 长沙瑞腾信息技术有限公司

Dates

Publication Date
20260512
Application Date
20260414

Claims (10)

  1. 1. A signal transmission and synchronization control method of a portable device, comprising the steps of: S100, acquiring real-time signal intensity and interference level data in a complex wireless environment where a portable machine is located, and processing the real-time signal intensity and interference level data by adopting an adaptive switching algorithm to obtain a stability evaluation value of a current data transmission channel, wherein the stability evaluation value is calculated based on signal intensity fluctuation and interference peak value; s200, if the stability evaluation value is lower than a preset threshold value, triggering a scanning process of the standby data transmission channel, acquiring a signal quality index of the standby channel from a scanning result, and determining an optimal standby channel; s300, comparing the signal quality index of the optimal standby channel with the current channel, judging whether switching is needed, and if so, executing channel switching operation to obtain a seamless signal transmission link; S400, acquiring time stamp data in a seamless signal transmission link, and calibrating time stamps of a plurality of portable machines by adopting a clock synchronization algorithm to obtain a unified time base reference; S500, calculating time deviation of each portable machine according to the unified time reference, and if the time deviation exceeds a preset threshold value, determining a high-precision time consistency state by adjusting a clock of the portable machine; s600, acquiring an execution sequence of a coordination instruction according to the operation requirement in a high-dynamic interference environment through instruction data distribution in the high-precision time consistency state, and judging whether the execution sequence meets the requirement of consistent operation guarantee or not to obtain an optimized task execution plan; And S700, distributing the execution feedback data to a plurality of portable machines in a high-risk operation scene according to the optimized task execution plan, and obtaining the enhanced reliability index by comparing the deviation of the execution feedback data and the plan and judging the overall harmony.
  2. 2. The signal transmission and synchronization control method of a portable device according to claim 1, wherein step S100 includes: s110, acquiring real-time signal strength and interference level data of the portable machine in a complex wireless environment; s120, performing discrete Fourier transform on the real-time signal intensity and interference level data to obtain a signal intensity fluctuation sequence and an interference peak value sequence; s130, extracting local maxima of the signal strength fluctuation sequence and the interference peak value sequence by adopting a sliding window algorithm, and constructing a first environment feature matrix; And S140, if the channel state classification result obtained by processing the first environment feature matrix through the support vector machine model is matched with a preset degradation threshold value, carrying out weighted summation on the first environment feature matrix by utilizing an adaptive switching algorithm to obtain a stability evaluation value of the current data transmission channel.
  3. 3. The signal transmission and synchronization control method of a portable device according to claim 1, wherein step S200 includes: s210, if the stability evaluation value is lower than a preset degradation threshold value, generating a full-band scanning instruction to acquire channel response data of the alternative channel; s220, obtaining a signal-to-noise ratio spectrum and an error rate distribution sequence according to the channel response data, and generating an available bandwidth matrix and a link congestion degree according to the signal-to-noise ratio spectrum and the error rate distribution sequence; S230, calculating the weighted quality score of each scanning frequency point according to the available bandwidth matrix and the link congestion degree; S240, extracting the center frequency corresponding to the maximum score according to the weighted quality score, and determining the optimal standby channel.
  4. 4. The signal transmission and synchronization control method of a portable device according to claim 1, wherein the step S300 includes: s310, acquiring a first signal quality evaluation value of an optimal standby channel and a second signal quality evaluation value of a current channel, and calculating to obtain a quality difference value; S320, if the quality difference value is larger than a preset switching trigger threshold value, generating a data frame alignment sequence according to the phase offset of the optimal standby channel and the synchronous clock frequency of the current channel; S330, constructing a double-channel buffer queue according to the data frame alignment sequence to generate a redundant data stream, and updating a bottom routing forwarding table according to the redundant data stream; and S340, activating the optimal standby channel according to the bottom layer routing forwarding table to obtain a seamless signal transmission link.
  5. 5. The signal transmission and synchronization control method of a portable device according to claim 1, wherein step S400 includes: S410, capturing physical layer sampling time from a seamless signal transmission link, and generating an original time stamp sequence; S420, obtaining a unidirectional transmission delay correction value according to the original time stamp sequence and the link asymmetry characteristic data; s430, inputting the unidirectional transmission delay correction value into a Kalman filtering model to obtain a crystal oscillator frequency deviation value and a phase deviation value; S440, calculating a dynamic compensation increment according to the crystal oscillator frequency deviation value and the phase offset value, and correcting the local counter values of the plurality of portable nodes by utilizing the dynamic compensation increment to obtain a unified time base reference.
  6. 6. The signal transmission and synchronization control method of a portable device according to claim 5, wherein step S500 includes: S510, acquiring a deviation dynamic monitoring sequence of a plurality of portable machine nodes, wherein the deviation dynamic monitoring sequence is generated by acquiring local clock readings and fusing a base reference; S520, obtaining an initial deviation distribution map according to a comparison result of the deviation dynamic monitoring sequence and a preset threshold value, and calculating a link delay difference by using the initial deviation distribution map to determine an offset correction vector; S530, updating local clock parameters of the portable machine according to the offset correction vector to obtain an optimized clock state set; s540, refining the residual deviation according to the optimized clock state set, and determining a high-precision time consistency state.
  7. 7. The signal transmission and synchronization control method of a portable device according to claim 1, wherein step S600 includes: S610, acquiring instruction data in a high-precision time consistency state, and performing channel feature extraction on the instruction data to finish data distribution to obtain an initial distribution topological graph; S620, extracting operation requirements according to the initial distribution topological graph, and generating a coordination instruction set; s630, carrying out time sequence arrangement on the coordination instruction set to obtain an execution sequence, and judging whether the execution sequence meets the requirement of consistent operation guarantee; And S640, if the execution sequence meets the consistent operation guarantee requirement, performing conflict elimination on the execution sequence to obtain an optimized task execution plan.
  8. 8. The signal transmission and synchronization control method of a portable device according to claim 1, wherein step S700 includes: S710, sending operation instructions to a plurality of portable machines according to an optimized task execution plan, acquiring execution feedback data of the plurality of portable machines, and performing alignment processing on the execution feedback data to obtain synchronous state data; the execution feedback data of the portable device is obtained by the following formula: ; Wherein, the Is the first The execution feedback data of the station portable device, In order to perform the start time of the execution, In order to perform the end time of the execution, Is the first As a result of the actual execution of the portable device, The number of the portable devices; The aligned synchronization state data is obtained by the following formula: ; Wherein, the For the aligned synchronization state data, For a uniform time base reference, An alignment compensation amount; S720, determining a plan deviation value by performing deviation comparison on the synchronous state data and a preset reference value; s730, if the plan deviation value exceeds a preset tolerance threshold, carrying out coordinated evaluation on the plan deviation value to obtain an overall cooperative dispatching value; s740, outputting the enhanced reliability index according to the integral coordination quantity value.
  9. 9. The signal transmission and synchronization control method of a portable device according to claim 8, wherein in step S720, the plan deviation value is determined by the following formula: ; Wherein, the In order to plan the value of the deviation, As the weight of the time-offset ratio, As a result of the bias ratio weight, In order to be a time-offset rate, Is the result deviation rate; time deviation rate The method is characterized by comprising the following steps: ; Wherein, the Is the first The planned execution time of the station portable device, Is an instruction Instruction execution time of (2); Result deviation rate The method is characterized by comprising the following steps: ; Wherein, the Is the first Standard execution result of the portable device.
  10. 10. A signal transmission and synchronization control system of a portable device for performing the signal transmission and synchronization control method of a portable device according to any one of claims 1 to 9, comprising: The stability evaluation value acquisition module (10) is used for acquiring real-time signal strength and interference level data in a complex wireless environment where the portable machine is located, and processing the real-time signal strength and interference level data by adopting an adaptive switching algorithm to obtain a stability evaluation value of a current data transmission channel, wherein the stability evaluation value is calculated based on signal strength fluctuation and interference peak value; The optimal standby channel determining module (20) is used for triggering the scanning process of the standby data transmission channel if the stability evaluation value is lower than a preset threshold value, acquiring the signal quality index of the standby channel from the scanning result, and determining the optimal standby channel; the signal transmission link acquisition module (30) is used for judging whether switching is needed or not by comparing the signal quality index of the optimal standby channel with the current channel, and if so, executing channel switching operation to obtain a seamless signal transmission link; The time reference acquisition module (40) is used for acquiring time stamp data in the seamless signal transmission link, and calibrating the time stamps of the plurality of portable devices by adopting a clock synchronization algorithm to obtain a unified time reference; A time consistency state acquisition module (50) for calculating the time deviation of each portable machine according to the unified time reference, and if the time deviation exceeds a preset threshold value, determining a high-precision time consistency state by adjusting the clock of the portable machine; The task execution plan acquisition module (60) is used for acquiring an execution sequence of a coordination instruction according to the operation requirement in the high-dynamic interference environment through instruction data distribution in the high-precision time consistency state, judging whether the execution sequence meets the requirement of consistent operation guarantee or not, and obtaining an optimized task execution plan; and the reliability index acquisition module (70) is used for distributing the execution feedback data to a plurality of portable machines in a high-risk operation scene according to the optimized task execution plan, and acquiring the enhanced reliability index by comparing the deviation of the execution feedback data and the plan and judging the overall harmony.

Description

Signal transmission and synchronous control method and system of portable machine Technical Field The invention relates to the technical field of portable machine collaborative operation, and particularly discloses a signal transmission and synchronous control method and system of a portable machine. Background In the field of modern communication and collaborative operation, portable machines play a vital role, and in particular, in emergency rescue, field survey and other scenes, the stability and reliability of the portable machines are directly related to success or failure of tasks. However, the prior art tends to expose significantly shorter plates when dealing with complex environments. Many schemes lack flexible adaptability in signal transmission, and cannot dynamically adjust communication modes according to environmental changes, so that frequent interruption occurs in unstable signal areas. In addition, the time coordination capability among a plurality of portable machines is insufficient, the consistency of operation is difficult to ensure, and the problems are particularly remarkable particularly in the high-dynamic and high-interference scenes, so that the application effect of the portable machines in critical tasks is limited. Focusing technical difficulties, stability of signal transmission and accuracy of time alignment of a plurality of portable devices become bottlenecks to be overcome. The stability of signal transmission is limited by the ability of the portable to adapt to different communication environments, for example, when the coverage of ground signals is insufficient, the portable is difficult to quickly switch to other reliable communication paths, thereby causing interruption of data transmission. This stability problem further affects the time coordination between multiple portable devices, as the non-uniformity of the time references can directly lead to deviations in instruction execution, particularly in situations where multiple portable devices are required to perform tasks simultaneously, time errors can have serious consequences. For example, in field rescue, if multiple portable devices cannot receive and execute the instructions at the same time due to time dyssynchrony, the efficiency and accuracy of rescue actions are compromised. Therefore, how to ensure seamless connection of signal transmission in complex and changeable environments and realize high-precision time consistency among multiple portable devices becomes a key problem of portable device technology development. Disclosure of Invention The invention provides a signal transmission and synchronous control method and system of a portable machine, which aim at solving the comprehensive problems of signal stability, time consistency and task execution coordination aiming at portable machine data transmission and coordination operation scenes in a complex wireless environment. An aspect of the present invention relates to a signal transmission and synchronization control method of a portable device, including the steps of: S100, acquiring real-time signal intensity and interference level data in a complex wireless environment where a portable machine is located, and processing the real-time signal intensity and interference level data by adopting an adaptive switching algorithm to obtain a stability evaluation value of a current data transmission channel, wherein the stability evaluation value is calculated based on signal intensity fluctuation and interference peak value; S200, if the stability evaluation value is lower than a preset threshold value, triggering a scanning process of the standby data transmission channel, acquiring a signal quality index of the standby channel from a scanning result, and determining an optimal standby channel; S300, comparing the signal quality index of the optimal standby channel with the current channel, judging whether switching is needed, and if so, executing channel switching operation to obtain a seamless signal transmission link; S400, acquiring time stamp data in a seamless signal transmission link, and calibrating time stamps of a plurality of portable machines by adopting a clock synchronization algorithm to obtain a unified time base reference; s500, calculating the time deviation of each portable machine according to the unified time reference, and if the time deviation exceeds a preset threshold value, determining a high-precision time consistency state by adjusting the clock of the portable machine; S600, acquiring an execution sequence of a coordination instruction according to operation requirements in a high-dynamic interference environment through instruction data distribution in a high-precision time consistency state, and judging whether the execution sequence meets the requirement of consistent operation guarantee or not to obtain an optimized task execution plan; and S700, distributing the execution feedback data to a plurality of portable machines in