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CN-122021685-A - Mining safety boot full life cycle traceability system based on RFID

CN122021685ACN 122021685 ACN122021685 ACN 122021685ACN-122021685-A

Abstract

The invention relates to the technical field of mine personnel positioning and safety production management, and discloses a mining safety boot full life cycle traceability system based on RFID, wherein a sensing layer adopts an energy collection type semi-passive dual-mode tag deployed on the safety boot, and the tag comprises a composite energy storage and collection unit and a dual-mode communication module, wherein the dual-mode communication module fuses UWB and RFID; the processing layer comprises a downhole edge node, and an energy consumption optimization sub-module in a core cooperative algorithm is operated, wherein vibration data is analyzed in real time through a light one-dimensional expansion causal convolution network, a top plate pressure precursor is identified, a super capacitor voltage is combined to dynamically switch a UWB full function, an RFID_ONLY or a deep sleep mode, UWB is forcedly activated when hidden danger occurs, positioning frequency is improved, and unnecessary power consumption is restrained. The invention realizes the full life cycle closed-loop tracing from warehousing, service and maintenance to scrapping of the safety boot, obviously reduces the operation and maintenance cost and improves the underground emergency response capability.

Inventors

  • WANG LONGJUN
  • HE HAIYAN
  • WANG XIAOHU

Assignees

  • 内蒙古恩和实业有限公司

Dates

Publication Date
20260512
Application Date
20260205

Claims (10)

  1. 1. The mining safety boot full life cycle traceability system based on RFID is characterized by comprising a perception layer, a transmission layer, a processing layer and a core cooperative algorithm; The sensing layer comprises an energy collection type semi-passive dual-mode tag deployed on a mining safety boot, wherein the tag comprises a composite energy storage and collection unit and a dual-mode communication module, the composite energy storage and collection unit comprises a piezoelectric ceramic array, a super-capacitor module and a solid-state thin-film lithium battery, the piezoelectric ceramic array is configured to collect environmental vibration energy and store the environmental vibration energy in the super-capacitor module through a conversion circuit, and the solid-state thin-film lithium battery is configured to start power supply when the voltage of the super-capacitor module is lower than a first threshold value; the treatment layer includes a downhole edge node; the core collaborative algorithm operates at a downhole edge node, comprising an energy consumption optimization sub-module configured to perform the following hidden trouble-energy consumption linkage control logic: Acquiring vibration time sequence data acquired by a tag in real time and real-time voltage of a super capacitor module; Processing vibration time sequence data by utilizing a lightweight one-dimensional expansion causal convolution network, extracting characteristic components of a preset frequency interval, and judging whether a top plate pressing precursor exists or not; dynamically generating a working mode switching instruction according to the coupling state of the judging result and the real-time voltage: Under the conventional working condition, switching among a UWB full-function mode, an RFID_ONLY mode and a deep sleep mode according to real-time voltage so as to realize self-sustaining balance of energy collection and consumption; When the top plate pressing precursor is identified, the UWB positioning module is forcedly locked to be in an activated state, the positioning frequency is increased, and meanwhile unnecessary module power consumption except UWB positioning is restrained until hidden danger characteristics are relieved or the voltage is reduced to a second threshold value.
  2. 2. The mining safety boot full life cycle tracing system based on the RFID according to claim 1, wherein the piezoelectric ceramic array is configured by adopting lead zirconate titanate piezoelectric ceramics in parallel, and the resonance frequency of the piezoelectric ceramic array is configured to be matched with the vibration frequency of a downhole coal mining machine by 40+/-5 Hz; The conversion circuit comprises a Buck-Boost energy conversion circuit, and is configured to convert collected mechanical energy into electric energy and charge the super capacitor module with the efficiency not lower than 75% under the environment that the vibration duty ratio is not less than 60%; the super capacitor module is configured to support the full-function work of the dual-mode communication module for more than or equal to 31 hours in a full-charged state, and support the tag to maintain real-time clock running in a static state.
  3. 3. The mining safety boot full life cycle traceability system based on RFID according to claim 1, wherein the explosion-proof level of the energy collection type semi-passive dual-mode tag is Exd [ ib ] I Mb; The tag is configured to adopt a triple energy limiting protection design, wherein the input voltage limiting adopts a parallel bidirectional TVS tube to limit the breakdown voltage within a range of 3.3V-5V, the energy storage current limiting adopts a series current limiting resistor to be matched with an electronic protection circuit, a loop is cut off within 1 mu s after a short circuit fault is detected, the output energy limiting adopts an intrinsic safety grid design to limit internal inductance <50 mu H and capacitance <10 mu F, and the released energy is ensured to be less than 20 mu J in any fault state.
  4. 4. The RFID-based mining safety boot full life cycle traceability system of claim 1, wherein said lightweight one-dimensional inflation causal convolution network comprises 6 layers of inflation convolutions with coefficients of inflation set to [1,2,4,8,16,32] and a kernel size of 3 to construct a receptive field covering 1270ms time domain range for identifying 10-20Hz low frequency vibration components in roof pressure precursors; The energy consumption optimization sub-module is configured to train the network by adopting a weighted multi-objective loss function L and combining FocalLoss loss items and MSE energy consumption prediction error items; Wherein, the l=0.6× FocalLoss +0.4×mse.
  5. 5. The mining safety boot full life cycle traceability system based on RFID according to claim 1, wherein the core collaborative algorithm further comprises a collaborative verification sub-module; The collaborative verification sub-module is configured to establish an energy-track-vibration multi-physical quantity coupling verification model, and the super capacitor voltage drop rate and the positioning coordinate change rate of the tag are fused by using Kalman filtering; When the tag is monitored to be in a high-frequency emission active state and the voltage drop slope of the super capacitor is obviously lower than a theoretical value and the deviation is more than 30%, or the tag is judged to be abnormal in data or illegally tampered when the tag is positioned and displayed to move and vibration is monitored to be static and the deviation duration is more than 3 seconds, and abnormal early warning is triggered.
  6. 6. The RFID-based mining safety boot full life cycle traceability system of claim 1, wherein the transmission layer is configured to encrypt data using a post quantum cryptography algorithm module; the post quantum cryptography algorithm module is configured to employ a CRYSTALS-Kyber key packaging mechanism and a Dilithium digital signature algorithm; the core collaborative algorithm further comprises an encryption-transmission collaborative sub-module which is configured to dynamically adjust an encryption strategy according to data priority, wherein high-priority emergency and positioning data adopts a single frame mode of CRYSTALS-Kyber-512 lightweight key encapsulation combined with Chacha20-Poly1305 stream encryption, and common priority perception and tracing data adopts a batch mode of CRYSTALS-Kyber-768 standard key encapsulation combined with AES-256-GCM packet encryption.
  7. 7. The mining safety boot full life cycle traceability system based on RFID according to claim 1, wherein the perception layer further comprises a recycling reader-writer; the recycling reader-writer is configured to perform label detection and treatment at the end of a full life cycle, wherein the recycling reader-writer is used for reading multiplexing times stored in a label, a piezoelectric ceramic energy collection efficiency history record and a chip self-checking state; Judging whether the tag meets the multiplexing condition according to the read data, if so, activating the tag super capacitor by radio frequency energy and executing EEPROM area ID erasing and new ID writing, and if not, sending a Kill instruction or a hardware reset signal to enable the tag to sleep permanently.
  8. 8. The mining safety boot full life cycle traceability system based on RFID according to claim 1, wherein said processing layer further comprises a digital twin server; The digital twin server is configured to construct a high-fidelity 3D rendering model based on the Unity 3D engine, receive real-time positioning data, state data and energy consumption data distributed by the core collaborative algorithm, realize millisecond-level synchronous mapping of underground physical scenes and the virtual model, and superimpose and display real-time motion tracks and health state indexes of the safety boots in the virtual model.
  9. 9. The RFID-based mining safety boot full life cycle tracing system of any one of claims 1-8, wherein said core collaborative algorithm is further configured to perform a full life cycle tracing workflow, comprising in particular: The step of warehousing binding, namely reading the tag ID through a reader-writer and binding the tag ID with the physical information of the safety boot to generate an initial traceability file containing an initial signature and storing the initial traceability file into a data storage server; In the underground real-time tracing step, during the service period of the safety boot, the positioning data of the tag, the voltage fluctuation curve of the super capacitor and the vibration environment data are encrypted and signed by utilizing a post quantum cryptography algorithm, so that an underground track chain with a time stamp and tamper-proof signature and a full-working-condition energy consumption record are generated, and a service period digital file is formed; When the energy consumption optimizing submodule recognizes a roof pressure precursor and forcibly locks the UWB positioning module, the system automatically increases the positioning data acquisition frequency and encrypts and stores the positioning data to construct a high-density emergency space-time tracing segment for track restoration and reason analysis after the accident occurs; The retirement multiplexing tracing step comprises the steps that after the safety boot is retired, a system reads the multiplexing times of the tag and the historical working condition data in the service period, calculates accumulated service life loss based on a corrected Arrhenius-Coffin coupling model, judges multiplexing or scrapping according to a loss value and a multiplexing threshold value, updates attribution information and multiplexing times in a tracing record and generates a new data signature if the multiplexing is judged, and seals the full life cycle tracing data and destroys the tag ID if the scrapping is judged.
  10. 10. The mining safety boot full life cycle traceability system based on the RFID according to claim 9, wherein in the corrected Arrhenius-Coffin coupling model, equivalent life loss Ltotal= Lthermal + LMECHANICAL, wherein a thermal aging component Lthermal follows an Arrhenius equation, a mechanical fatigue component LMECHANICAL follows a Coffin-Manson equation, the two components are coupled through a Miner linear cumulative damage theory, and the multiplexing threshold is set to 4-6 times, and the cumulative total service period is 36-54 months.

Description

Mining safety boot full life cycle traceability system based on RFID Technical Field The invention relates to the technical field of mine personnel positioning and safety production management, in particular to a full life cycle traceability system of mine safety boots based on RFID. Background The underground coal working environment is complex, and personnel positioning and safety monitoring are key links of coal mine safety production. According to the related standard requirements of AQ 6210-2007 general technical condition of a coal mine underground operation personnel management system, underground operation personnel must be provided with a positioning identification card, so that real-time position monitoring, attendance management and emergency search and rescue of the personnel are realized. At present, the underground personnel positioning technology mainly goes through the development process from RFID (radio frequency identification) to UWB (ultra wide band), wherein the RFID technology realizes region identification and attendance management by utilizing the 920-925MHz frequency band, has the characteristics of low cost and simple deployment, and the UWB technology realizes centimeter-level high-precision positioning by utilizing the 6.5GHz frequency band based on the IEEE 802.15.4a standard, so that the accurate positioning requirement of underground complex roadways can be met. However, the existing downhole positioning identification technology has the following technical defects in practical application: (1) The lack of full life cycle closed loop management and resource waste are serious. The design life of the existing physical boot body of the mining safety boot is usually 3 years, and the built-in positioning tag (chip) is powered by a button battery, so that the service life is only about 6 months. The existing mode adopts disposable binding, disposable use and integral scrapping, so that 6 batches of labels (replaced every 6 months) are required to be replaced within the service life period of 3 years of the safety boot, the maintenance cost is high, or when the safety boot is scrapped for 3 years, the labels with good performance (only used for 6 months) are scrapped together with the boot body, and serious waste of electronic components is caused. (2) There is a lack of scientific evaluation means for degradation of performance of components in complex environments. In the prior art, button batteries are mostly used for supplying power, on-line monitoring of the residual capacity and the attenuation state of the batteries is lacking, and meanwhile, an accelerated degradation evaluation model under a downhole severe environment (85 ℃ and 85%RH) is lacking for key performance parameters such as label packaging tightness, chip sensitivity and the like. This results in either the tags being rejected in advance in the event of a performance penalty, causing waste, or running out of date after the performance has fallen beyond a safety threshold, with serious safety implications. (3) The algorithm has poor cooperativity and low intelligent control level. The functional modules of the existing system such as energy consumption management, time sequence scheduling, encryption transmission and the like usually operate independently, and lack a unified core cooperation mechanism. For example, the energy consumption optimization strategy is not linked with an underground safety state (such as vibration frequency shift caused by a roof pressure precursor), the positioning frequency cannot be dynamically adjusted according to a real-time working condition, a data verification mechanism is imperfect, multi-mode data cross verification capability is lacked, data false alarm or label replacement is difficult to identify, a cloud edge cooperative mechanism is weak, cloud model optimization cannot be rapidly synchronized to an underground edge node, and real-time prediction of hidden danger and self-adaptive optimization of an algorithm are difficult to realize. Disclosure of Invention The invention provides a full life cycle tracing system of a mining safety boot based on RFID, which realizes the full life cycle closed-loop tracing from warehousing, serving and maintenance to scrapping of the safety boot under the severe constraint of meeting the underground intrinsic safety explosion prevention of a coal mine by deep fusion of an energy collection type semi-passive dual-mode architecture and a core cooperative algorithm, and has the advantages of high-precision positioning, the intrinsic safety explosion prevention and intelligent energy efficiency management, obviously reduces the operation and maintenance cost and improves the underground emergency response capability. In order to achieve the above purpose, the invention adopts the following technical scheme: The mining safety boot full life cycle traceability system based on RFID comprises a perception layer, a transmission layer, a processing