CN114301888B - Remote online autonomous upgrade diagnosis method - Google Patents
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Abstract
The invention provides a remote online autonomous upgrade diagnosis method, which comprises a mine service terminal, N intelligent side ends arranged in a mine and a management intelligent terminal, wherein the N intelligent side ends are connected with the mine service terminal; the remote online autonomous upgrade diagnosis comprises the following steps: the method comprises the steps of realizing upgrading connection debugging between a mine service terminal and an intelligent side; the method comprises the steps of performing autonomous upgrading on the intelligent side by a mine service terminal; the method comprises the steps of upgrading and waking up an intelligent side; and the step of autonomous diagnosis of the intelligent side by the mine service terminal. The remote updating and the real-time signal feedback connection are realized without the need of the underground dismounting equipment, the defect of great adaptation to the signal difference in the well is overcome, the phenomenon that the signal changes at any time due to the change in the well is overcome, and the real-time signal updating and the tracking connection are realized.
Description
Technical Field
The invention relates to the technical field of remote data transmission, in particular to a remote online autonomous upgrade diagnosis method.
Background
Along with the popularization of intelligent production, intelligent side equipment is often installed in a mine, and as the development of the internal functions of a terminal progresses, the system or software in the terminal is often required to be updated or upgraded. However, in the mine, because the terminal is installed in the deep well, the signal is very weak or even absent, and in the prior art, when the intelligent side equipment in the well needs to be updated, a method is often adopted to remove the current terminal equipment and reinstall an intelligent side equipment after the ground is updated. Because each intelligent side device has corresponding functional attributes, that is, corresponding data of installation setting and use setting corresponding to each terminal are different in each position, when dismantling and replacing, device installation setting and related parameter setting are needed to be carried out on the reinstalled device, and in order to upgrade the terminal, at least two intelligent sides are needed to be prepared in one position for realizing system or software upgrade updating. However, professional personnel are often needed for dismantling and installing the intelligent side end, the intelligent side end needs to be lowered into a well to be operated, and the installation and disassembly difficulties are high. And because in order to provide enough space for the operation space in the well limited, in order to provide enough big space for mining operation, under the prerequisite of rational layout instrument equipment, generally will install intelligent marginal end in more remote narrow and little place that the staff has the touch, under above-mentioned environmental condition, non-in-well staff goes down in the well, because unfamiliar in the in-well environment and the reason of changing when upgrading dismouting staff, it is more dangerous to realize the dismouting of intelligent marginal end to the in-well.
Disclosure of Invention
In view of this, the invention provides a remote online autonomous upgrade diagnosis method, which writes in the machine code of the side microprocessor for upgrading with the interface of external communication in advance, so that the code can be updated without intensively recovering and dismantling the product in the running state, thereby saving the cost and being more convenient and faster.
The technical scheme is as follows:
the remote online autonomous upgrading diagnosis method is characterized by comprising a mine service terminal, N intelligent side ends arranged in a mine and a management intelligent terminal; the mine service terminal comprises a server, wherein an upgrade program loading module and a card reader variable frequency driving module are connected to the server, and the card reader variable frequency driving module is connected with a card reader LoRa; the intelligent side comprises a microprocessor, an identification card is connected to the microprocessor, and a card reader LoRa of the mine service terminal is used for being connected with all the identification cards of the intelligent side in a communication mode; n is a positive integer greater than or equal to 1;
the remote online autonomous upgrade diagnosis method comprises the following steps of:
the method comprises the steps of realizing upgrading connection debugging between a mine service terminal and an intelligent side;
the method comprises the steps of performing autonomous upgrading on the intelligent side by a mine service terminal;
the method comprises the steps of upgrading and waking up an intelligent side;
and the step of autonomous diagnosis of the intelligent side by the mine service terminal.
Through the design, the mine service terminal is adopted to realize the upgrading connection and debugging with the intelligent side end in the well, a data transmission channel is constructed, the upgrading data is transmitted to the appointed side end through the data transmission, and the side end can finish an automatic upgrading program. The safety performance is high without the need of workers to go into the well. Even if an upgrade error occurs, a solution can be tried in time or an error can be reported to a manager. The reliability is high.
Still further, the step for implementing upgrade connection debugging between the mine service terminal and the intelligent side end is as follows:
s11: after the upgrade program loading module of the mine service terminal acquires the upgrade program, the server starts a remote online autonomous upgrade process and enters step S12;
s12: the server controls the card reader LoRa to send out an identification card reading signal according to the initial transmitting frequency according to the preset initial transmitting frequency;
s13: the server acquires an identification card feedback signal in a preset waiting period;
if all the identification card feedback signals are acquired in a preset waiting period, the server adopts the current transmitting frequency as an upgrading activating frequency; and the step S15 is carried out after the upgrade activation frequency is modified to the initial transmission frequency;
otherwise, go to step S14;
s14: the server controls the card reader variable frequency driving module to increase driving voltage, increases the current transmitting frequency by a preset increasing frequency value, and controls the card reader LoRa to send out a reading signal according to the new transmitting frequency and then returns to the step S13;
s15: the server identifies the content of the identification card feedback signal and determines the intelligent side sequence number corresponding to the identification card feedback signal;
s16: and the server controls the card reader LoRa and the identification card at the intelligent side to establish an upgrade connection channel.
By adopting the scheme, the self-feedback adjustment of the transmitting frequency is realized, and an identification card reading signal is sent from a card reader LoRa until an identification card feedback signal is received; and the self-feedback adjustment of the transmitting frequency is realized, and a frequency adjustment closed loop is formed until a stable identification card feedback signal can be obtained. The upgrade connection channel established between the LoRa of the card reader and the identification card is more stable, and the upgrade activation frequency can be continuously corrected along with the use and the movement of the intelligent side end so as to meet the requirement that the LoRa of the card reader is stably connected with the identification card, thereby improving the transmission stability of the data packet. In addition, the identification card can feed back the feedback signal of the identification card only after acquiring a strong enough activation signal so as to meet the connection stability.
The arrangement can greatly adapt to the defect of poor signal in the well and can overcome the phenomenon of change at any time due to the change in the well.
Still further technical scheme: the step for the mine service terminal to automatically upgrade the intelligent side terminal specifically comprises the following steps:
s21: the server determines an upgrade data packet corresponding to the intelligent side according to the serial number of the intelligent side connected by upgrade;
s22: the server acquires the memory attribute of the corresponding upgrade data packet and the maximum load of each transmission of an upgrade connection channel between the server and the intelligent side;
s23: the method comprises the steps that the memory attribute of a server upgrading data packet and the maximum load of each transmission of an upgrading connection channel are used for dividing data of the upgrading data packet, and M upgrading data books are obtained and numbered; m is a positive integer greater than or equal to 3;
s24: and the server sequentially retrieves the data books from the upgrade program loading module to the data storage end of the card reader LoRa according to the numbers of the M upgrade data books, and controls the card reader LoRa to send the upgrade data books to the intelligent side ends which are correspondingly connected.
By adopting the scheme, the mine service terminal and the intelligent side end write in the data packet segmentation and assembly rules in advance, and the mine service terminal overcomes the defect that the data packet is too large to be transmitted by segmenting the data packet. The data sent to the edge can be assembled in a lossless manner, so that the upgrading reliability is improved.
According to still further technical scheme, the upgrade data packet is an intelligent terminal system upgrade data packet;
the upgrade data packet is an upgrade data packet of APP software in the intelligent terminal;
the M upgrade data books at least comprise an upgrade data book containing a start feature code and an upgrade data book containing an end feature code.
In the present invention, the mentioned upgrade is not limited to the two upgrade modes, and any upgrade with data update can be realized by the proposal mentioned in the present invention.
According to still further technical scheme, the steps for upgrading and waking up the intelligent side end are specifically as follows:
s31: the identification card at the intelligent side acquires an identification card reading signal in real time, and the step S32 is performed after the identification card reading signal is acquired;
s32: the intelligent side starts an upgrade mode, opens an upgrade window and establishes a blank upgrade data packet receiving area;
s33: after the intelligent side receives the initial feature code in the upgrade data packet through the identification card, the intelligent side starts an upgrade data acquisition and storage program;
s34: the intelligent side sequentially stacks and stores the data received by the identification card in the blank upgrading data packet receiving area according to the data receiving sequence;
s35: when an upgrade data book containing end feature codes is received, assembling all the upgrade data books to form an edge upgrade data packet;
s36: the intelligent side is upgraded according to the side upgrading data packet, and the intelligent side data is automatically restarted after the upgrading is finished, and an upgrading success signal is sent to the mine service terminal through the identification card.
For the side, the upgrade state can not be kept all the time due to the limitation of the running memory of the microprocessor, and in order to improve the running efficiency, the upgrade is performed in a wake-up mode. When the identification card receives the identification card reading signal, the edge starts to start the upgrade mode. And when the upgrade mode is started, the received data is assembled according to the pre-designed data book assembly rule, so that the integrity and the correctness of the updated data are ensured, and the error rate of remote update and upgrade is reduced.
Preferably, if the first upgrade data received by the intelligent side through the identification card has no initial feature code, a data initial transmission error reporting signal is sent out and fed back to the card reader LoRa of the server.
Preferably, if the intelligent side receives the upgrade data book containing the end feature codes through the identification card and also receives the upgrade data book, a data transmission end error report signal is sent and fed back to the card reader LoRa of the server.
According to still further technical scheme, the steps for the mine service terminal to autonomously diagnose the intelligent side end are as follows:
s41: the card reader LoRa of the mine service terminal acquires error reporting information fed back by the intelligent side in real time;
s42: the server of the mine service terminal controls the card reader LoRa to close a current connection channel with the intelligent terminal;
s43: the server controls the card reader LoRa to try again and achieve upgrade connection and data transmission between the card reader LoRa and the intelligent side;
s44: if the server receives the upgrade success signal, closing the card reader LoRa to finish the upgrade; otherwise, the management end is called to correspond to the identification card address of the intelligent side end, fault report and repair of the intelligent side end in the well are carried out, and the serial number of the intelligent side end corresponding to the upgrading error is sent.
By adopting the scheme, when an upgrade error occurs, the side end and the mine service terminal can be matched with closing the current connecting channel to update the upgrade program again. To overcome the upgrade failure caused by unstable transmission signal; and the mine service terminal can also send a fault repair request to the intelligent side of the management terminal, so that the real-time fault grasping is realized.
Preferably, the error reporting information at least comprises upgrade mode starting error reporting information, data start transmission error reporting signals and data transmission end error reporting signals.
Compared with the prior art, the invention has the beneficial effects that:
the machine code for upgrading the side microprocessor is written in advance through the interface communicated with the outside, so that the code can be updated without intensively recovering and dismantling the product in the running state, and the cost is saved, and the method is more convenient and faster. The self-feedback adjustment of the transmitting frequency is realized, and an identification card reading signal is sent from a card reader LoRa to the receiving of an identification card feedback signal; and the self-feedback adjustment of the transmitting frequency is realized, and a frequency adjustment closed loop is formed until a stable identification card feedback signal can be obtained. The upgrade connection channel established between the LoRa of the card reader and the identification card is more stable, and the upgrade activation frequency can be continuously corrected along with the use and the movement of the intelligent side end so as to meet the requirement that the LoRa of the card reader is stably connected with the identification card, thereby improving the transmission stability of the data packet. In addition, the identification card can feed back the feedback signal of the identification card only after acquiring a strong enough activation signal so as to meet the connection stability. The defect of poor signal in the well is greatly adapted, and the phenomenon that the signal changes at any time due to the change in the well is overcome. And realizing signal real-time updating and connection tracking.
Drawings
FIG. 1 is a block diagram of a mine service terminal and intelligent edge connection of the present invention;
FIG. 2 is a flow chart of steps for implementing upgrade connection debugging between a mine service terminal and an intelligent side;
FIG. 3 is a flowchart illustrating the steps of the mine service terminal for automatically upgrading the intelligent edge of the mine service terminal;
FIG. 4 is a flowchart illustrating steps performed by the intelligent edge for upgrading and waking up;
fig. 5 is a flowchart of the steps performed by the mine service terminal for autonomous diagnosis of the intelligent side.
Detailed Description
The invention is further described below with reference to examples and figures.
Referring to fig. 1 to 5, the remote online autonomous upgrade diagnosis method of the invention mainly comprises a mine service terminal, N intelligent side ends installed in a mine and a management intelligent terminal, wherein the mine service terminal comprises a server, an upgrade program loading module and a card reader variable frequency driving module are connected to the server, and the card reader variable frequency driving module is connected with a card reader loRa; the intelligent side comprises a microprocessor, an identification card is connected to the microprocessor, and a card reader LoRa of the mine service terminal is used for being connected with all the identification cards of the intelligent side in a communication mode; n is a positive integer greater than or equal to 1;
in the present embodiment, n=5; in the invention, the intelligent side end in the well comprises an intelligent side end for monitoring the environment in the well and an intelligent side end for operating 3 hoisting equipment.
In this embodiment, the mine service terminal upgrades one monitoring APP inside the intelligent side of the 3 hoisting devices. The corresponding upgrade step needs to be repeated at least 3 times.
In this embodiment, the step of implementing remote online autonomous upgrade diagnosis on the intelligent side of the hoisting device by the mine service terminal includes:
the method comprises the steps of realizing upgrade connection debugging between a mine service terminal and a hoisting equipment operation intelligent side;
the method comprises the steps that the mine service terminal is used for automatically upgrading the intelligent hoisting equipment operation side;
the method comprises the steps of upgrading and waking up intelligent side ends for hoisting equipment to operate;
the method is used for the mine service terminal to carry out autonomous diagnosis on the intelligent side of the operation of the hoisting equipment.
In the embodiment, an administrator puts hoisting equipment into a mine service terminal through a management intelligent terminal to monitor an APP upgrading program.
Specifically, referring to fig. 2, the steps for implementing upgrade connection debugging between the mine service terminal and the intelligent edge of the operation of the hoisting equipment are as follows:
s11: after the upgrade program loading module of the mine service terminal acquires the upgrade program, the server starts a remote online autonomous upgrade process and enters step S12;
s12: the server controls the card reader LoRa to send out an identification card reading signal according to the initial transmitting frequency according to the preset initial transmitting frequency;
in this embodiment, the three hoisting devices have different distances from the mine service terminal due to different installation positions, and the initial transmission frequencies of the three hoisting devices are a hz, B hz, and C hz, respectively.
S13: the server acquires an identification card feedback signal in a preset waiting period;
if all the identification card feedback signals are acquired in a preset waiting period, the server adopts the current transmitting frequency as an upgrading activating frequency; and the step S15 is carried out after the upgrade activation frequency is modified to the initial transmission frequency;
after updating, the initial transmitting frequencies of the three hoisting devices are adjusted to be A+ahz, B-B hz and C+2c hz.
Otherwise, go to step S14;
s14: the server controls the card reader variable frequency driving module to increase driving voltage, increases the current transmitting frequency by a preset increasing frequency value, and controls the card reader LoRa to send out a reading signal according to the new transmitting frequency and then returns to the step S13;
s15: the server identifies the content of the identification card feedback signal and determines the intelligent side sequence number corresponding to the identification card feedback signal;
s16: and the server controls the card reader LoRa and the identification card at the intelligent side to establish an upgrade connection channel.
Referring to fig. 3, the steps for the mine service terminal to autonomously upgrade the intelligent side of the operation of the hoisting device are specifically as follows:
s21: the server determines an upgrade data packet corresponding to the intelligent side according to the serial number of the intelligent side connected by upgrade;
s22: the server acquires the memory attribute of the corresponding upgrade data packet and the maximum load of each transmission of an upgrade connection channel between the server and the intelligent side;
s23: the method comprises the steps that the memory attribute of a server upgrading data packet and the maximum load of each transmission of an upgrading connection channel are used for dividing data of the upgrading data packet, and M upgrading data books are obtained and numbered; m is a positive integer greater than or equal to 3;
in this embodiment, since the monitoring APP in the intelligent terminal of the hoisting device is updated, the content of the data packet is the same.
S24: and the server sequentially retrieves the data books from the upgrade program loading module to the data storage end of the card reader LoRa according to the numbers of the M upgrade data books, and controls the card reader LoRa to send the upgrade data books to the intelligent side ends which are correspondingly connected.
In the implementation, the upgrade data packet is an upgrade data packet of APP software in the intelligent terminal;
in this implementation, m=10.
The 10 upgrade data books comprise an upgrade data book containing a start feature code, 8 intermediate upgrade data books and an upgrade data book containing an end feature code.
Referring to fig. 4, the steps for the hoisting device to operate the intelligent side to perform upgrade and wake up are specifically as follows:
s31: the identification card at the intelligent side acquires an identification card reading signal in real time, and the step S32 is performed after the identification card reading signal is acquired;
s32: the intelligent side starts an upgrade mode, opens an upgrade window and establishes a blank upgrade data packet receiving area;
s33: after the intelligent side receives the initial feature code in the upgrade data packet through the identification card, the intelligent side starts an upgrade data acquisition and storage program;
s34: the intelligent side sequentially stacks and stores the data received by the identification card in the blank upgrading data packet receiving area according to the data receiving sequence;
s35: when an upgrade data book containing end feature codes is received, assembling all the upgrade data books to form an edge upgrade data packet;
s36: the intelligent side is upgraded according to the side upgrading data packet, and the intelligent side data is automatically restarted after the upgrading is finished, and an upgrading success signal is sent to the mine service terminal through the identification card.
In the upgrading process, if the first upgrading data book received by the intelligent side through the identification card does not have the initial feature code, a data initial transmission error reporting signal is sent out and fed back to a card reader LoRa of the server.
In the upgrading process, if the intelligent side receives the upgrading data book containing the end feature codes through the identification card and also receives the upgrading data book, a data transmission end error reporting signal is sent and fed back to the card reader LoRa of the server.
Referring to fig. 5, the steps for the mine service terminal to autonomously diagnose the intelligent side of the operation of the hoisting equipment are as follows:
s41: the card reader LoRa of the mine service terminal acquires error reporting information fed back by the intelligent side in real time;
s42: the server of the mine service terminal controls the card reader LoRa to close a current connection channel with the intelligent terminal;
s43: the server controls the card reader LoRa to try again and achieve upgrade connection and data transmission between the card reader LoRa and the intelligent side;
s44: if the server receives the upgrade success signal, closing the card reader LoRa to finish the upgrade; otherwise, the management end is called to correspond to the identification card address of the intelligent side end, fault report and repair of the intelligent side end in the well are carried out, and the serial number of the intelligent side end corresponding to the upgrading error is sent.
The error reporting information comprises upgrade mode starting error reporting information, data initial transmission error reporting signals and data transmission ending error reporting signals.
Claims (5)
1. A remote online autonomous upgrade diagnosis method is characterized in that: the method is applied to a mine service terminal, N intelligent side ends arranged in a mine and a management intelligent terminal; the mine service terminal comprises a server, wherein an upgrade program loading module and a card reader variable frequency driving module are connected to the server, and the card reader variable frequency driving module is connected with a card reader LoRa; the intelligent side comprises a microprocessor, an identification card is connected to the microprocessor, and a card reader LoRa of the mine service terminal is used for being connected with all the identification cards of the intelligent side in a communication mode; n is a positive integer greater than or equal to 1;
the remote online autonomous upgrade diagnosis method comprises the following steps of:
the method is used for realizing the step of upgrading, connecting and debugging between the mine service terminal and the intelligent side, specifically S11-S16,
s11: after the upgrade program loading module of the mine service terminal acquires the upgrade program, the server starts a remote online autonomous upgrade process and enters step S12;
s12: the server controls the card reader LoRa to send out an identification card reading signal according to the initial transmitting frequency according to the preset initial transmitting frequency;
s13: the server acquires an identification card feedback signal in a preset waiting period;
if all the identification card feedback signals are acquired in a preset waiting period, the server adopts the current transmitting frequency as an upgrading activating frequency; and the step S15 is carried out after the upgrade activation frequency is modified to the initial transmission frequency;
otherwise, go to step S14;
s14: the server controls the card reader variable frequency driving module to increase driving voltage, increases the current transmitting frequency by a preset increasing frequency value, and controls the card reader LoRa to send out a reading signal according to the new transmitting frequency and then returns to the step S13;
s15: the server identifies the content of the identification card feedback signal and determines the intelligent side sequence number corresponding to the identification card feedback signal;
s16: the server controls the card reader LoRa and the identification card of the intelligent side to establish an upgrade connection channel;
the method is used for the mine service terminal to carry out the autonomous upgrade of the intelligent side, specifically S21-S24,
s21: the server determines an upgrade data packet corresponding to the intelligent side according to the serial number of the intelligent side connected by upgrade;
s22: the server acquires the memory attribute of the corresponding upgrade data packet and the maximum load of each transmission of an upgrade connection channel between the server and the intelligent side;
s23: the method comprises the steps that the memory attribute of a server upgrading data packet and the maximum load of each transmission of an upgrading connection channel are used for dividing data of the upgrading data packet, and M upgrading data books are obtained and numbered; m is a positive integer greater than or equal to 3;
s24: the server sequentially retrieves the data books from the upgrade program loading module to the data storage end of the card reader LoRa according to the numbers of the M upgrade data books, and controls the card reader LoRa to send the upgrade data books to the intelligent side ends which are correspondingly connected;
the step for upgrading and waking up the intelligent side is specifically S31-S36,
s31: the identification card at the intelligent side acquires an identification card reading signal in real time, and the step S32 is performed after the identification card reading signal is acquired;
s32: the intelligent side starts an upgrade mode, opens an upgrade window and establishes a blank upgrade data packet receiving area;
s33: after the intelligent side receives the initial feature code in the upgrade data packet through the identification card, the intelligent side starts an upgrade data acquisition and storage program;
s34: the intelligent side sequentially stacks and stores the data received by the identification card in the blank upgrading data packet receiving area according to the data receiving sequence;
s35: when an upgrade data book containing end feature codes is received, assembling all the upgrade data books to form an edge upgrade data packet;
s36: the intelligent side end upgrades according to the side end upgrade data packet, automatically restarting the intelligent side end data after the upgrade is finished, and sending an upgrade success signal to the mine service terminal through the identification card;
the method is used for the autonomous diagnosis of the intelligent side by the mine service terminal, specifically S41-S44,
s41: the card reader LoRa of the mine service terminal acquires error reporting information fed back by the intelligent side in real time;
s42: the server of the mine service terminal controls the card reader LoRa to close a current connection channel with the intelligent terminal;
s43: the server controls the card reader LoRa to try again and achieve upgrade connection and data transmission between the card reader LoRa and the intelligent side;
s44: if the server receives the upgrade success signal, closing the card reader LoRa to finish the upgrade; otherwise, the management end is called to correspond to the identification card address of the intelligent side end, fault report and repair of the intelligent side end in the well are carried out, and the serial number of the intelligent side end corresponding to the upgrading error is sent.
2. The remote online autonomous upgrade diagnosis method according to claim 1, wherein:
the upgrade data packet is an intelligent terminal system upgrade data packet;
the upgrade data packet is an upgrade data packet of APP software in the intelligent terminal;
the M upgrade data books at least comprise an upgrade data book containing a start feature code and an upgrade data book containing an end feature code.
3. The remote online autonomous upgrade diagnosis method according to claim 1, wherein: if the first upgrade data book received by the intelligent side end through the identification card does not have the initial feature code, a data initial transmission error reporting signal is sent out and fed back to a card reader LoRa of the server.
4. The remote online autonomous upgrade diagnosis method according to claim 1, wherein: if the intelligent side receives the upgrade data book containing the end feature codes through the identification card and also receives the upgrade data book, the intelligent side sends out a data transmission end error report signal and feeds the data transmission end error report signal back to a card reader LoRa of the server.
5. The remote online autonomous upgrade diagnosis method according to claim 1, wherein:
the error reporting information at least comprises upgrade mode starting error reporting information, data initial transmission error reporting signals and data transmission ending error reporting signals.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107832079A (en) * | 2017-11-15 | 2018-03-23 | 中国石油天然气股份有限公司 | Method and device for upgrading oil-gas well monitor and computer readable storage medium |
| CN112055353A (en) * | 2020-09-10 | 2020-12-08 | 中煤科工集团重庆研究院有限公司 | Wireless upgrading system and method for coal mine personnel positioning identification card |
| CA3081051A1 (en) * | 2020-01-14 | 2021-04-27 | Institute Of Geology And Geophysics Chinese Academy Of Sciences (Iggcas) | Data upgrade method and system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107832079A (en) * | 2017-11-15 | 2018-03-23 | 中国石油天然气股份有限公司 | Method and device for upgrading oil-gas well monitor and computer readable storage medium |
| CA3081051A1 (en) * | 2020-01-14 | 2021-04-27 | Institute Of Geology And Geophysics Chinese Academy Of Sciences (Iggcas) | Data upgrade method and system |
| CN112055353A (en) * | 2020-09-10 | 2020-12-08 | 中煤科工集团重庆研究院有限公司 | Wireless upgrading system and method for coal mine personnel positioning identification card |
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