CN111416850A - NB-IOT meter firmware upgrading system and upgrading method - Google Patents
NB-IOT meter firmware upgrading system and upgrading method Download PDFInfo
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- 230000003139 buffering effect Effects 0.000 claims description 2
- 238000013496 data integrity verification Methods 0.000 claims 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/34—Network arrangements or protocols for supporting network services or applications involving the movement of software or configuration parameters
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
- G06F8/654—Updates using techniques specially adapted for alterable solid state memories, e.g. for EEPROM or flash memories
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72406—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by software upgrading or downloading
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
- H04M1/72412—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories using two-way short-range wireless interfaces
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
- H04W28/14—Flow control between communication endpoints using intermediate storage
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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Abstract
The invention discloses an upgrading system and an upgrading method for firmware of an NB-IOT (NB-input/output) meter, wherein the upgrading system comprises an OTA (over the air) platform, a mobile user terminal and at least one NB meter terminal, the NB meter terminal comprises a B L E data transmission module, meter reading software is installed on the mobile user terminal, B L E near field communication is carried out between the meter reading software and the NB meter terminal, the OTA platform communicates with the OTA platform through a mobile network, a firmware upgrading packet is sent to the mobile user terminal by the OTA platform through the mobile network, and the mobile user terminal sends the firmware upgrading packet to the NB meter terminal through B L E near field communication.
Description
Technical Field
The invention relates to the technical field of meters such as water meters and gas meters, in particular to an NB-IOT meter firmware upgrading system and upgrading method.
Background
With the recent years that NB-IOT (Narrow Band Internet of Things) smart water and gas meter products are being installed and used in large quantities in water and gas meter companies, firmware upgrade as a battery-powered NB-IOT water and gas meter will be a challenge. Currently, The NB-IOT wireless upgrade generally adopts an upgrade method of issuing FOTA (firmware over-The-Air, wireless firmware upgrade) differential packets through an NB wireless channel, and The upgrade method is effective for NB internet-of-things terminals with stable networks, small firmware changes, and no consideration of energy consumption. The upgrading mode needs 2 times of flash memory as cache to store The differential packet issued by an OTA (Over-The-Air, which is a technology for realizing remote management of mobile terminal equipment and SIM card data through an Air interface of mobile communication) platform. This presents the problem of:
1. twice flash is used as cache, so that the hardware cost is increased;
2. when the NB signal is unstable in the environment of installing the NB-IOT water-gas meter, the OTA platform cannot issue the firmware differential package, so that the NB water-gas meter cannot be upgraded.
Disclosure of Invention
In order to solve the technical problem, the invention discloses an NB-IOT meter firmware upgrading system and a NB-IOT meter firmware upgrading method, the NB-IOT meter firmware upgrading system comprises an OTA platform, a mobile user side and at least one NB meter terminal, the NB meter terminal comprises a B L E data transmission module, meter reading software is installed on the mobile user side, B L E near field communication is conducted between the mobile user side and the NB meter terminal through the meter reading software, the mobile user side communicates with the OTA platform through a mobile network, when the mobile network between the OTA platform and the NB meter terminal is not communicated, the OTA platform sends a firmware upgrading packet to the mobile user side through the mobile network, and the mobile user side sends the firmware upgrading packet to the NB meter terminal through the B L E near field communication.
Further, after receiving the firmware upgrade package, the NB meter terminal stores the firmware upgrade package in the flash memory of the B L E data transmission module.
The NB meter terminal further comprises a power supply module, a valve control module, a metering module, an NB data transmission module and a first central controller, wherein the first central controller is respectively and electrically connected with the power supply module, the valve control module, the metering module, the NB data transmission module and a B L E data transmission module, the first central controller realizes the power supply on-off of the B L E data transmission module and the NB data transmission module by controlling the power supply module, the NB data transmission module is communicated with an over-the-air download platform through a mobile network, the B L E data transmission module is communicated with the over-the-air download platform through a mobile user terminal, and the B L E data transmission module is electrically connected with the NB data transmission module.
The B L E data transmission module comprises a B L E communication module, a second central controller and a flash memory, the B L E data transmission module is electrically connected with the NB data transmission module and the first central controller through the second central controller, and the B L E communication module receives data of the mobile user terminal, and sends the data to the flash memory for storage after verification by the second central controller.
In a second aspect, the invention discloses an upgrading method for firmware of an NB-IOT meter, which comprises the following steps:
step S1, when the OTA platform issues the firmware upgrade package to the NB meter terminal, detecting whether the mobile network communication path of the NB meter terminal is normal, if so, turning to step S2, and if not, turning to step S3;
s2, the OTA platform sends a firmware upgrade package to the NB meter terminal through the mobile network communication path, and the step is switched to S4;
step S3, the OTA platform starts the firmware upgrade mode of the mobile user terminal, and the firmware upgrade package is issued to the NB meter terminal through the mobile user terminal;
and step S4, finishing the firmware upgrade after the NB meter terminal receives the firmware upgrade package.
Further, in step S1, the method for detecting whether the mobile network communication link is normal is as follows: and the OTA platform detects whether the NB meter terminal normally reports data, and if the NB meter terminal does not report data within the set time, the mobile network communication link of the NB meter terminal is judged to be abnormal.
Further, the step of finishing the firmware upgrade in the step S4 includes the NB meter terminal buffering the firmware upgrade package data in the flash memory of the B L E data transmission module and finishing the data integrity check, and the MCU of the B L E data transmission module transmitting the firmware upgrade package data to the MCU of the central controller of the NB meter terminal, and the central controller MCU finishing the firmware upgrade.
According to the invention, a B L E (Bluetooth L ow Energy, Bluetooth with low power consumption) near-field communication function is added to the NB meter terminal, and mobile phone APP meter reading software is utilized to break through a communication path from an over-the-air download platform (OTA platform for short) to the NB meter terminal from a client mobile phone APP, so that the reissue or issue of a firmware upgrading packet can be completed by 100%, thereby solving the problem that the firmware of the NB meter terminal cannot be upgraded when no 4G or 5G network signal exists.
Drawings
FIG. 1 is a system architecture diagram of the present invention;
FIG. 2 is an architecture diagram of a meter terminal of the present invention;
FIG. 3 is a flowchart of a firmware upgrade method according to the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
Example one
The architecture diagram of the NB-IOT meter firmware upgrading system is shown in FIG. 1, and the invention is realized by using B L E (Bluetooth L ow Energy, Bluetooth with low power consumption) technology;
the NB meter terminal has a near field communication function, the mobile user side is provided with meter reading software, the mobile user side performs B L E near field communication with the NB meter terminal through the meter reading software and communicates with the OTA platform through a mobile network (4G/5G network), when the mobile network between the OTA platform and the NB meter terminal is not communicated, the OTA platform sends the firmware upgrading packet to the mobile user side through the mobile network, and the mobile user side sends the firmware upgrading packet to the NB meter terminal through B L E near field communication.
Meanwhile, by utilizing the characteristic of a B L E large flash memory, the firmware upgrade package issued by NB and B L E paths is stored in the flash memory of the B L E data transmission module, so that the problem of firmware upgrade data package caching is solved without increasing hardware cost.
The NB meter terminal comprises but is not limited to an NB water meter, an NB gas meter and the like, the NB meter terminal comprises a power supply module, a valve control module and a metering module, the NB data transmission module, a central controller MCU1 and a B L E (Bluetooth L ow Energy ) data transmission module are further included, the power supply module supplies power to other modules in the meter, the MCU1 is respectively and electrically connected with the power supply module, the valve control module, the metering module, the NB data transmission module and the B L E data transmission module, the MCU1 collects signals of the metering module, the opening and closing of a meter valve are achieved by controlling the valve control module, meanwhile, the MCU 7 controls the power supply module to achieve the power on-off of the B L E data transmission module and the NB data transmission module, the NB data transmission module communicates with an over-the air download platform (hereinafter abbreviated as an OTA platform) through a 4G or 5G mobile network to achieve the up-down-up-down data interaction, the OTA data interaction is achieved, the OTA platform firmware upgrade package obtaining capability is achieved through a mobile network path, and the OTA data transmission module is electrically connected with the NB data transmission module L.
The B L E data transmission module comprises a B L E communication module, a central controller MCU2 and a flash memory, the B L E data transmission module is electrically connected with the NB data transmission module and the MCU1 through the MCU2, and the B L E communication module receives data of the mobile user terminal, checks the data by the MCU2 and then sends the data to the flash memory for storage.
The MCU2 is a master control MCU for upgrading the meter terminal firmware, completes the transceiving of B L E data, and completes the verification, reading and writing of F L ASH data and the management of firmware versions.
The B L E path refers to the process of issuing the firmware upgrade package from the OTA platform to the APP client of the mobile user terminal through the 4G or 5G network, and then the APP client sends the firmware upgrade package to the B L E data transmission module when being connected with the meter.
The working principle of the system of the invention is as follows:
under the condition that the mobile network is stable, the OTA platform directly transmits the firmware upgrade package to the NB meter terminal through the mobile network; and under the condition that the mobile network is unstable, the OTA platform transmits the firmware upgrade package to the NB meter terminal through the mobile user terminal.
The NB-IOT meter firmware upgrading method applying the system comprises the following steps:
step S1, when the OTA platform issues the firmware upgrade package to the NB meter terminal, detecting whether the mobile network communication path of the NB meter terminal is normal, if so, turning to step S2, and if not, turning to step S3;
the method for detecting whether the mobile network communication link is normal is as follows: and the OTA platform detects whether the NB meter terminal normally reports data, and if the data are not reported within the set time, the mobile network signal is weak in the environment where the NB meter terminal is located or the NB meter terminal is not on-line, so that a firmware upgrade package cannot be issued through a mobile network communication path. The set time can be 10 days, and can also be set according to the actual situation, and the protection scope of the invention is not influenced.
And S2, the OTA platform issues a firmware upgrade package to an NB data transmission module of the NB meter terminal through the mobile network communication path, and the step goes to S4.
The MCU1 sends the firmware upgrade package from the NB data transmission module to the MCU2 of the B L E data transmission module through the UART serial port, the MCU2 verifies the firmware upgrade package, and the firmware upgrade package is stored to flash after verification, and the MCU1 is informed to start the upgrade operation after the storage is finished.
And step S3, the OTA platform starts the firmware upgrading mode of the mobile user terminal, and the firmware upgrading packet is issued to the NB meter terminal through the mobile user terminal.
When a mobile user side holds a mobile phone and checks data of an intelligent NB meter terminal through B L E near field communication or executes other operations (such as a switch valve), an OTA platform, a transmission link of a client APP and an intelligent NB water-gas meter is opened, the OTA platform sends a firmware upgrading packet to the mobile user side through a 4G/5G network, the mobile user side is provided with APP software for meter reading, after the APP of the mobile user side receives the firmware upgrading packet and checks the firmware upgrading packet, the firmware upgrading packet is sent to a B L E communication module in a B L E data transmission module, after the B L E communication module receives the firmware upgrading packet, the MCU2 checks the firmware upgrading packet, after the check is passed, the flash is stored, and after the check is finished, the MCU1 is informed to start upgrading operation.
The APP verification content of the mobile user terminal comprises the following steps: whether the total firmware packet number issued by the OTA platform is the same as the total legal data packet number received by the APP or not is judged; whether the total data packet CRC16 received by the APP is the same as the total data packet CRC16 sent by the system or not; and whether the version number in the upgrade firmware package is the same as the version number issued by the OTA or not.
And step S4, finishing the firmware upgrade after the NB meter terminal receives the firmware upgrade package.
And the NB meter terminal buffers the upgrade packet data in a flash memory of the B L E data transmission module and completes verification of the total packet number of the data and the firmware CRC16, after the verification of the firmware stored in the flash memory is completed, the data is sent to a central control Unit (MCU) of the NB meter terminal through an MCU (Microcontroller Unit or single chip microcomputer) of the B L E data transmission module, and the MCU completes updating of the firmware when starting the internal BOOT.
The invention can still update the firmware of the intelligent NB water-gas meter in the environment without NB signals, and solves the problem that the meter end fixing piece can not be updated due to NB signal blind spots.
In an environment with unstable NB signals, after part of firmware upgrade packages are transmitted through a mobile network path, the NB signals are continuously lost, and the transmission of the firmware upgrade packages of the latter half is failed, the OTA platform can be automatically switched to a B L E client APP upgrade mode, so that the problem that the table end cannot be continuously upgraded due to unstable NB signals is solved.
When the table terminal can not be connected with the NB base station because of the code bug, the B L E can be used for completing the upgrade of the table terminal firmware through the client APP to realize the repair of the bug, and the problem that the terminal can not be connected with the NB base station because of the code bug is solved.
Because the flash in the B L E data transmission module is used as the cache firmware upgrade package, the hardware cost rise caused by caching the flash is reduced.
The above description is for the purpose of illustrating embodiments of the invention and is not intended to limit the invention, and it will be apparent to those skilled in the art that any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the invention shall fall within the protection scope of the invention.
Claims (7)
1. An NB-IOT meter firmware upgrading system is characterized by comprising an OTA platform, a mobile user side and at least one NB meter terminal, wherein the NB meter terminal comprises a B L E data transmission module, meter reading software is installed on the mobile user side, B L E near field communication is conducted between the mobile user side and the NB meter terminal through the meter reading software, the mobile user side and the OTA platform are communicated through a mobile network, when the mobile network between the OTA platform and the NB meter terminal is not communicated, the OTA platform sends a firmware upgrading packet to the mobile user side through the mobile network, and the mobile user side sends the firmware upgrading packet to the B L E data transmission module of the NB meter terminal through the B L E near field communication.
2. The NB-IOT meter firmware upgrade system as claimed in claim 1, wherein the NB meter terminal receives the firmware upgrade package and stores it in the flash memory of the B L E data transfer module.
3. The upgrading system for the firmware of the NB-IOT meter according to claim 1, wherein the NB meter terminal further comprises a power supply module, a valve control module, a metering module, an NB data transmission module and a first central controller, the first central controller is respectively and electrically connected with the power supply module, the valve control module, the metering module, the NB data transmission module and the B L E data transmission module, the first central controller controls the power supply module to enable the B L E data transmission module and the NB data transmission module to be powered on and off, the NB data transmission module is communicated with an over-the-air download platform through a mobile network, the B L E data transmission module is communicated with the over-the-air download platform through a mobile user terminal, and the B L E data transmission module is electrically connected with the NB data transmission module.
4. The upgrading system for firmware of the NB-IOT meter according to claim 3, wherein the B L E data transmission module comprises a B L E communication module, a second central controller and a flash memory, the B L E data transmission module is electrically connected with the NB data transmission module and the first central controller through the second central controller, and the B L E communication module receives data of the mobile user terminal, and sends the data to the flash memory for storage after the data is verified by the second central controller.
5. An NB-IOT meter firmware upgrade method is characterized by comprising the following steps:
step S1, when the OTA platform issues the firmware upgrade package to the NB meter terminal, detecting whether the mobile network communication path of the NB meter terminal is normal, if so, turning to step S2, and if not, turning to step S3;
s2, the OTA platform sends a firmware upgrade package to the NB meter terminal through the mobile network communication path, and the step is switched to S4;
step S3, the OTA platform starts the firmware upgrade mode of the mobile user terminal, and the firmware upgrade package is issued to the NB meter terminal through the mobile user terminal;
and step S4, finishing the firmware upgrade after the NB meter terminal receives the firmware upgrade package.
6. The NB-IOT meter firmware upgrade method according to claim 5, wherein in step S1, the method for detecting whether the mobile network communication link is normal is: and the OTA platform detects whether the NB meter terminal normally reports data, and if the NB meter terminal does not report data within the set time, the mobile network communication link of the NB meter terminal is judged to be abnormal.
7. The NB-IOT meter firmware upgrading method of claim 5, wherein the step of completing firmware upgrading in step S4 includes the NB meter terminal buffering the firmware upgrading packet data in the flash memory of the B L E data transmission module and completing data integrity verification, and the MCU of the B L E data transmission module transmitting the firmware upgrading packet data to the MCU of the NB meter terminal, the MCU completing firmware upgrading.
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Cited By (1)
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| CN112383439A (en) * | 2020-11-24 | 2021-02-19 | 重庆前卫表业有限公司 | Air upgrading system and method for intelligent gas meter |
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Application publication date: 20200714 |