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CN-122002432-A - Method for wireless AP communication on stacker-reclaimer

CN122002432ACN 122002432 ACN122002432 ACN 122002432ACN-122002432-A

Abstract

The invention relates to the technical field of stacker-reclaimer communication, and discloses a wireless AP communication method on a stacker-reclaimer, which comprises the following steps: s1, communication reference configuration and environment modeling; s2, multi-source data real-time monitoring and communication establishment phase; s3, a dynamic channel adaptation and anti-interference optimization stage; s4, AP seamless switching and connection maintaining stage; s5, an abnormality monitoring and emergency treatment stage; s6, data archiving and model iteration stages; the invention aims to provide a method for communication of a wireless AP on a stacker-reclaimer, which aims to solve the problems that the existing communication mode of the wireless AP on the stacker-reclaimer commonly adopts a fixed channel for data transmission, lacks dynamic adaptation capability for complex interference in industrial scenes, cannot actively avoid the situations of signal attenuation and the like caused by electromagnetic interference and dust, and is easy to cause signal quality downslide, data packet loss or transmission delay and the like.

Inventors

  • JIANG YU

Assignees

  • 辽宁环渤海实业有限公司

Dates

Publication Date
20260508
Application Date
20260129

Claims (7)

  1. 1. A method for wireless AP communication on a stacker-reclaimer, comprising the steps of: S1, in a communication reference configuration and environment modeling stage, deploying an orbit along an AP and a blind-supplement AP, collecting industrial environment parameters, establishing an interference level database, loading a communication standard, setting a quality threshold, dividing historical communication data, and training a signal quality prediction model; s2, in the stage of real-time monitoring and communication establishment of multi-source data, collecting the position, the moving speed, the communication index and the environmental interference data of the stacker-reclaimer, automatically connecting the latest high-quality AP, encrypting and establishing a communication link, and transmitting the operation data of the preprocessing equipment; S3, in a dynamic channel adaptation and anti-interference optimization stage, integrating a communication index and an environment interference level, calculating a channel quality score, switching an optimal channel or frequency band according to the score, and dynamically adjusting AP signal power in combination with a moving speed; S4, in the seamless switching and connection maintaining stage of the AP, switching pre-judgment is triggered based on distance and signal intensity, non-perception switching is realized through a fast roaming protocol, and the original AP is connected back and a standby channel is started when switching fails; s5, in the abnormal monitoring and emergency treatment stage, comparing the communication index with a preset threshold value, judging the abnormality, and executing signal enhancement, data distribution, operation adjustment and other treatment measures according to the mild, moderate and severe grades; s6, in the data archiving and model iteration stage, data such as communication logs and abnormal records are stored in a classified mode, model parameters are adjusted by adopting a gradient descent method based on historical data in each month, and new scene data are supplemented.
  2. 2. The method for wireless AP communication on a stacker-reclaimer as claimed in claim 1, wherein the communication reference configuration and environment modeling stage comprises a track along-line AP deployment device, an environment parameter acquisition module and a reference parameter configuration unit, wherein the track along-line AP deployment device consists of an industrial dual-band wireless AP, a blind-supplementing AP and a mounting bracket, a main AP is deployed every 50 meters according to the maximum movement range of the stacker-reclaimer, a blind-supplementing AP is deployed at track inflection points, the environment parameter acquisition module consists of an electromagnetic interference sensor, a dust concentration sensor, a temperature and humidity sensor and a data integration unit, acquires electromagnetic interference intensity, dust concentration and temperature and humidity data, calculates environment interference level, The standard parameter configuration unit is composed of a standard analysis module, a data set dividing tool and a signal quality prediction model training unit, loads IEEE802.11acWave2 standard, sets a communication quality threshold, sets a signal strength RSSI equal to-75 dBm, a packet loss rate equal to or less than 0.5%, and delay equal to or less than 50ms, and divides historical communication data into a training set, a verification set and a test set according to the ratio of 7:2:1 to train a signal quality prediction model.
  3. 3. The method for wireless AP communication on a stacker-reclaimer of claim 1, wherein the multi-source data real-time monitoring and communication establishment phase comprises an equipment state acquisition module and an initial communication establishment unit, wherein the equipment state acquisition module comprises a GPS and track encoder positioning component, a wireless network card communication index monitoring unit and an environment sensor, the positioning component acquires position coordinates and moving speed, positioning errors are less than or equal to 1cm, the communication index monitoring unit captures RSSI, signal-to-noise ratio, packet loss rate and delay data, the environment sensor synchronously uploads interference level data, the initial communication establishment unit comprises an AES-256 encryption module, an edge data preprocessing unit and a communication link verification module, the nearest high-quality AP is automatically connected after the stacker-reclaimer is started, a link is established through AES-256 encryption, the edge unit compresses and standardizes equipment operation data, and the communication link verification module confirms that the link is unobstructed through a handshake protocol.
  4. 4. The method for wireless AP communication on stacker-reclaimer of claim 1, wherein the dynamic channel adaptation and anti-interference optimization stage comprises a channel quality evaluation unit, an adaptive channel switching unit and a signal enhancement processing unit, wherein the channel quality evaluation unit comprises an index integration module and a quality score calculation unit, integrates signal-to-noise ratio, packet loss rate and environmental interference level, and calculates channel quality scores: , ∈[0,1], more than or equal to 0.7 is a high-quality channel, and more than or equal to 0.5 <0.7 Is an available channel, The self-adaptive channel switching unit consists of a channel scanning module, a priority ordering unit and a fast switching execution module, triggers channel scanning when Q is less than 0.5, switches the optimal idle channel according to Q value ordering, switches to a 5GHz frequency band when the same frequency band is inferior, the signal enhancement processing unit consists of a power adjusting module and a moving speed detecting unit, adjusts AP signal power in combination with the moving speed, , For output power, in dBm, the regulation range is 10-20dBm, The movement speed is given in m/s.
  5. 5. The method for wireless AP communication on a stacker-reclaimer according to claim 1 is characterized in that the AP seamless switching and connection maintaining stage comprises a switching threshold judging unit, a quick switching mechanism unit and a switching failure bottom-blocking unit, wherein the switching threshold judging unit comprises a distance detecting module and a signal intensity monitoring unit, calculates the distance between the stacker-reclaimer and a current AP, triggers switching pre-judgment when the distance is more than or equal to 40 meters or RSSI is less than or equal to-70 dBm, the quick switching mechanism unit comprises an 802.11r quick roaming protocol module, a data buffering queue and a CRC32 checking module, pre-authenticates the identity of adjacent APs, buffers transmission data, checks data integrity after switching, switching delay is less than or equal to 20ms, the data buffering queue capacity is more than or equal to 1MB, the switching failure bottom-blocking unit comprises a back-up module, a standby channel starting module and an alarm pushing module, and returns to the original AP when switching fails, 3 preset standby channels are started, and abnormal switching alarms are pushed.
  6. 6. The method for communication of the wireless AP on the stacker-reclaimer of claim 1, wherein the abnormality monitoring and emergency processing stage comprises an abnormality judging unit and a grading processing unit, wherein the abnormality judging unit consists of an index threshold comparison module and a continuous abnormality counting module, any condition that continuous 3-frame data packet loss, communication delay >100ms and channel quality score Q <0.4 last for 5 seconds is met is judged to be abnormal, the grading processing unit consists of a mild abnormality processing module, a moderate abnormality processing module and a severe abnormality processing module, the signal power is enhanced when the mild abnormality (Q=0.4-0.5), a standby channel is switched, double APs are simultaneously connected and data are shunted and transmitted when the moderate abnormality (Q < 0.3) is met, non-critical operation is suspended when the severe abnormality (Q < 0.3), an emergency alarm is pushed, and the stacker-reclaimer is guided to move to a high-quality signal area with RSSI of more than or equal to 65 dBm.
  7. 7. The method for wireless AP communication on stacker-reclaimer of claim 1, wherein the data archiving and model iteration stage comprises a hybrid storage unit and a model iteration optimization unit, wherein the hybrid storage unit consists of a MySQL structured storage module, a MongoDB unstructured storage module and a data retrieval engine, stores communication logs, abnormal processing results, original sensor data and the like, reserves data for 6 months and supports multi-dimensional retrieval according to time, position and AP number, the model iteration optimization unit consists of a data statistics module, a parameter iteration tool and a model accuracy verification module, adjusts signal quality prediction model parameters by adopting a gradient descent method based on data of nearly 30 days per month, , And (3) supplementing new scene data for learning rate, wherein the value of the learning rate is 0.001, and verifying model accuracy.

Description

Method for wireless AP communication on stacker-reclaimer Technical Field The invention relates to the technical field of stacker-reclaimer communication, in particular to a method for wireless AP communication on a stacker-reclaimer. Background The wireless AP communication on the stacker-reclaimer is that wireless AP equipment is deployed along the operation track of the stacker-reclaimer in an industrial stacker-reclaimer operation scene, and a communication module carried by the stacker-reclaimer is matched, so that wireless transmission of equipment operation state data, operation control instructions and other information between the stacker-reclaimer and a central control system is realized, the wireless AP communication on the stacker-reclaimer is characterized by adapting to the dynamic operation characteristic of the stacker-reclaimer moving along the track, breaking through the space limitation of wired communication, guaranteeing the continuity and reliability of data transmission in an industrial environment, and providing communication support for automatic and intelligent operation of the stacker-reclaimer; The existing communication mode of the wireless AP on the stacker-reclaimer generally adopts a fixed channel to carry out data transmission, lacks dynamic adaptation capability to complex interference in an industrial scene, and is incapable of actively avoiding the situations such as signal attenuation caused by electromagnetic interference and dust, and the problems such as signal quality sliding down, data packet loss or transmission delay are easy to occur. Disclosure of Invention The invention aims to provide a method for communication of a wireless AP on a stacker-reclaimer, which aims to solve the problems that in the prior art, a fixed channel is commonly adopted for data transmission in the communication mode of the conventional wireless AP on the stacker-reclaimer, the dynamic adaptation capability to complex interference in an industrial scene is lacking, the situations such as signal attenuation caused by electromagnetic interference and dust cannot be actively avoided, and the problems of signal quality slipping, data packet loss or transmission delay and the like are easy to occur. In order to achieve the above purpose, the present invention adopts the following technical scheme: a method for wireless AP communication on a stacker-reclaimer, comprising the steps of: S1, in a communication reference configuration and environment modeling stage, deploying an orbit along an AP and a blind-supplement AP, collecting industrial environment parameters, establishing an interference level database, loading a communication standard, setting a quality threshold, dividing historical communication data, and training a signal quality prediction model; s2, in the stage of real-time monitoring and communication establishment of multi-source data, collecting the position, the moving speed, the communication index and the environmental interference data of the stacker-reclaimer, automatically connecting the latest high-quality AP, encrypting and establishing a communication link, and transmitting the operation data of the preprocessing equipment; S3, in a dynamic channel adaptation and anti-interference optimization stage, integrating a communication index and an environment interference level, calculating a channel quality score, switching an optimal channel or frequency band according to the score, and dynamically adjusting AP signal power in combination with a moving speed; S4, in the seamless switching and connection maintaining stage of the AP, switching pre-judgment is triggered based on distance and signal intensity, non-perception switching is realized through a fast roaming protocol, and the original AP is connected back and a standby channel is started when switching fails; s5, in the abnormal monitoring and emergency treatment stage, comparing the communication index with a preset threshold value, judging the abnormality, and executing signal enhancement, data distribution, operation adjustment and other treatment measures according to the mild, moderate and severe grades; s6, in the data archiving and model iteration stage, data such as communication logs and abnormal records are stored in a classified mode, model parameters are adjusted by adopting a gradient descent method based on historical data in each month, and new scene data are supplemented. The technical scheme is further improved that the communication reference configuration and environment modeling stage comprises a track line AP deployment device, an environment parameter acquisition module and a reference parameter configuration unit, wherein the track line AP deployment device consists of an industrial-level dual-band wireless AP, a blind-supplementing AP and a mounting bracket, a main AP is deployed every 50 meters according to the maximum moving range of a stacker-reclaimer, a blind-supplementing AP is deployed at