WO2023123875A1 - 一种基于蓝牙的多设备ota升级方法、电子设备、存储介质和程序产品 - Google Patents

一种基于蓝牙的多设备ota升级方法、电子设备、存储介质和程序产品 Download PDF

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WO2023123875A1
WO2023123875A1 PCT/CN2022/097544 CN2022097544W WO2023123875A1 WO 2023123875 A1 WO2023123875 A1 WO 2023123875A1 CN 2022097544 W CN2022097544 W CN 2022097544W WO 2023123875 A1 WO2023123875 A1 WO 2023123875A1
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firmware
bluetooth
host
slave
mode
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PCT/CN2022/097544
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French (fr)
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高毅
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如果新能源科技(江苏)股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/34Network arrangements or protocols for supporting network services or applications involving the movement of software or configuration parameters 
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00Arrangements for software engineering
    • G06F8/60Software deployment
    • G06F8/65Updates
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

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  • the invention relates to the technical field of bluetooth, in particular to a bluetooth-based multi-device OTA upgrade method, electronic equipment, storage media and program products.
  • the application software or the upper computer is installed on the user equipment, and the application software or the upper computer obtains the OTA firmware on the server.
  • the application software or the upper computer calls different protocol interfaces of SPP/GATT and sends it to the device Bluetooth according to the data transmission method required by the corresponding protocol.
  • the device Bluetooth After receiving the data, the device Bluetooth forwards the received OTA data to the device's MCU through Uart to complete the device OTA firmware. upgrade.
  • Bluetooth-based OTA solutions are based on the following two points:
  • the equipment to be upgraded is of the same type
  • the host's Bluetooth can connect to each device.
  • each device may have multiple devices, such as multiple batteries or controllers.
  • the Bluetooth on the host cannot be directly connected to each device, resulting in the inability to implement some Bluetooth-based OTA solutions.
  • the purpose of the present invention is to provide a Bluetooth-based multi-device OTA upgrade method, which can realize firmware upgrades for all types of devices in the RV system, regardless of the type, quantity and status of the devices in the RV. location deployment or signal occlusion limitations.
  • the invention provides a Bluetooth-based multi-device OTA upgrade method, comprising the following steps:
  • the host checks whether the server firmware has been updated, and if so, downloads the latest firmware of each device from the server;
  • the host establishes a Bluetooth connection with the device, and sends the latest firmware version information of all devices;
  • the slave device After the slave device obtains the latest firmware from the host, it switches to the host mode regularly, and connects to the device that the host cannot connect to through Bluetooth. The device that switches to the host mode jumps to the above steps to establish a connection.
  • the firmware of the device is upgraded;
  • Switch the slave mode, and the device switched to the host mode will switch to the slave mode again after completing the OTA task and connect to the host.
  • both the master and the slave store firmware and version information of all types of devices in the bus.
  • the slave device after the slave device is switched to the master mode, if the slave device cannot be found within a preset time, it returns to the slave mode and connects to the master.
  • firmware header includes firmware name, firmware version and firmware verification.
  • the host regularly checks the firmware version from the server, and if the checked firmware version is newer than the stored firmware version, then downloads the latest firmware of each device from the server.
  • the master bluetooth scans the slaves, if a new device is found, establishes a bluetooth connection with the new device, and sends the latest firmware version information of all the devices.
  • the device switched to the master mode scans the slave device via bluetooth, if a new device is found, a bluetooth connection is established with the new device, and the latest firmware version information of all devices is sent.
  • An electronic device comprising: a processor
  • the program includes a method for performing a Bluetooth-based OTA upgrade method for multiple devices.
  • a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor, a bluetooth-based multi-device OTA upgrade method.
  • a computer program product includes a computer program/instruction, and when the computer program/instruction is executed by a processor, a bluetooth-based multi-device OTA upgrade method is implemented.
  • the present invention provides a multi-device OTA upgrade method based on Bluetooth, which can upgrade the firmware of all types of devices on the bus, and can upgrade the firmware of other connected slaves through the slave that has obtained the latest firmware and version information. It is not limited by equipment location deployment or signal occlusion.
  • Fig. 1 is a schematic diagram of equipment distribution in a caravan system according to an embodiment of the present invention
  • Fig. 2 is a flow chart of an OTA upgrade method for a device directly connected to a host according to an embodiment of the present invention
  • FIG. 3 is a flow chart of an OTA upgrade method for a device that cannot be directly connected to a host according to an embodiment of the present invention.
  • the default Bluetooth host in the RV system is the central control panel.
  • the central control panel has the function of surfing the Internet. You can directly download the latest firmware of each device from the official website.
  • the central control panel and each device in the system have Bluetooth.
  • the Bluetooth of the central control panel cannot be directly connected to the Bluetooth of each device.
  • the central control panel in Figure 1 cannot be directly connected to DCDC and controller 2.
  • a Bluetooth-based multi-device OTA upgrade method as shown in Figure 2 and Figure 3, comprises the following steps:
  • the battery in Figure 1 also saves the firmware of the controller and DCDC.
  • the firmware header includes firmware name, firmware version and firmware check.
  • the firmware name is used to distinguish which device the firmware is used for.
  • the firmware version is used to distinguish the old and new status of the device.
  • the firmware check is used to verify the correctness of the received firmware.
  • the host checks whether the server firmware has been updated, and if so, downloads the latest firmware of each device from the server. Specifically, the host regularly (eg, 60 seconds) checks the firmware version from the server, and if the checked firmware version is newer than the stored firmware version, it downloads the latest firmware of each device from the server.
  • the host Bluetooth scans the slave, the host establishes a Bluetooth connection with the scanned device, and sends the latest firmware version information of all devices. If the host Bluetooth scans the slaves and finds a new device, it will establish a Bluetooth connection with the new device and send the latest firmware version information of all devices.
  • Firmware upgrade if the firmware version received by the slave device is newer than the stored firmware version, it will initiate an upgrade request and start the upgrade, so that all devices directly connected to the host can be upgraded to the latest firmware. If the firmware of the slave device has been updated, restart the device, run the updated firmware, and jump to the hardware initialization step.
  • the slave device After the slave device obtains the latest firmware from the host, it will switch to the host mode at regular intervals. For example, once every ten minutes, the device switched to the host mode will scan the slave via Bluetooth and connect to the device that cannot be connected to the host via Bluetooth. If a new device is found, a Bluetooth connection is established with the new device, and the device switched to the host mode jumps to the step of establishing a connection to upgrade the firmware of the connected device. As shown in Figure 1, controller 1 switches to host mode after obtaining the latest firmware of the central control panel, connects DCDC and controller 2, and updates the firmware of DCDC and controller 2, so that DCDC and controller 2 can also Upgraded to the latest firmware, controller 1 acts as a repeater.
  • Switch the slave mode, and the device switched to the host mode will switch to the slave mode again after completing the OTA task and connect to the host.
  • controller 1 switches to a slave and connects to the central control panel to complete other information interactions other than OTA, such as current and voltage reporting.
  • the slave device After the slave device is switched to the master mode, if the slave device cannot be found within the preset time (such as one minute), it will return to the slave device mode and connect to the master device to complete other information interactions other than OTA, as shown in Figure 1. If the inverter has no devices within its range that cannot be connected to the central control panel, reconnect to the central control panel after the search time is up to complete other information interactions other than OTA, such as current and voltage reporting.
  • MESH networking has special requirements for Bluetooth, and the present invention is applicable to all Bluetooth.
  • An electronic device comprising: a processor
  • the program includes a method for performing a Bluetooth-based multi-device OTA upgrade.
  • a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor, a bluetooth-based multi-device OTA upgrade method.
  • a computer program product includes a computer program/instruction, and when the computer program/instruction is executed by a processor, a bluetooth-based multi-device OTA upgrade method is implemented.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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  • Information Transfer Between Computers (AREA)

Abstract

本发明提供一种基于蓝牙的多设备OTA升级方法,包括步骤:主机检查服务器固件是否有更新,是则从服务器下载最新的各个设备的固件;主机与设备建立蓝牙连接,发送所有设备的最新的固件版本信息;若从机设备接收到的固件版本比已存储的固件版本新,则发起升级请求,开始升级;从机设备从主机获取到最新的固件后,定时切换到主机模式,并通过蓝牙连接主机连接不到的设备,切换到主机模式的设备跳转至建立连接步骤对连接的设备的固件进行升级;切换到主机模式的设备在完成OTA任务后,再次切换到从机模式,并与主机相连。本发明能够实现对房车系统中所有种类的所有设备进行固件升级,不受设备种类、数量以及在房车中的位置部署或信号遮挡的限制。

Description

一种基于蓝牙的多设备OTA升级方法、电子设备、存储介质和程序产品
本申请要求于2021年12月30日提交至中国专利局、申请号为202111647175.8、发明名称为“一种基于蓝牙的多设备OTA升级方法、电子设备、存储介质和程序产品”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及蓝牙技术领域,尤其涉及一种基于蓝牙的多设备OTA升级方法、电子设备、存储介质和程序产品。
背景技术
目前,在用户设备上安装应用软件或者上位机,应用软件或者上位机获取到服务器上需要OTA的固件。应用软件或者上位机调用SPP/GATT不同的协议接口按照对应协议要求的数据传输方式下发给设备蓝牙,设备蓝牙收到数据后通过Uart转发收到的OTA数据给设备的MCU,完成设备OTA固件升级。目前,基于蓝牙的OTA方案都建立在以下两点的基础上:
1、需要升级的设备是同一类型的;
2、主机的蓝牙可以连接到每个设备。
实际上房车系统中有多种设备,如控制器、逆变器、电池、DCDC等,每种设备又可能有多个,如可能有多个电池或控制器。另外,这些设备由于在房车中的位置部署或信号遮挡,主机上的蓝牙不能直接连接到每个设备,导致现在有的基于蓝牙的OTA方案不能实施。
发明内容
为了克服现有技术的不足,本发明的目的在于提供一种基于蓝牙的多设备OTA升级方法,能够实现对房车系统中所有种类的所有设备进行固件升级,不受设备种类、数量以及在房车中的位置部署或信号遮挡的限制。
本发明提供一种基于蓝牙的多设备OTA升级方法,包括以下步骤:
检查固件版本,主机检查服务器固件是否有更新,是则从服务器下载最新的各个设备的固件;
建立连接,主机与设备建立蓝牙连接,发送所有设备的最新的固件版本信息;
固件升级,若从机设备接收到的固件版本比已存储的固件版本新,则发起升级请求,开始升级;
切换主机模式,从机设备从主机获取到最新的固件后,定时切换到主机模式,并通过蓝牙连接主机连接不到的设备,切换到主机模式的设备跳转至所述建立连接步骤对连接的设备的固件进行升级;
切换从机模式,切换到主机模式的设备在完成OTA任务后,再次切换到从机模式,并与主机相连。
进一步地,所述主机和从机内均存储总线中所有类型设备的固件及其版本信息。
进一步地,所述切换主机模式步骤中,从机设备切换到主机模式后,若在预设时间内搜索不到从机,则返回从机模式,并与主机相连。
进一步地,固件头包括固件名称、固件版本和固件校验。
进一步地,所述检查固件版本步骤中,主机定时从服务器检查固件版本,若检查到的固件版本比已存储的固件版本新,则从服务器下载最新的各个设备的固件。
进一步地,所述建立连接步骤中,主机蓝牙扫描从机,若发现新设备,则与新设备建立蓝牙连接,发送所有设备的最新的固件版本信息。
进一步地,所述固件升级步骤中,若从机设备自身固件进行了更新,则重启设备,运行更新后固件;
所述切换主机模式步骤中,切换到主机模式的设备蓝牙扫描从机,若发现新设备,则与新设备建立蓝牙连接,发送所有设备的最新的固件版本信息。
一种电子设备,包括:处理器;
存储器;以及程序,其中所述程序被存储在所述存储器中,并且被配置成由处理器执行,所述程序包括用于执行一种基于蓝牙的多设备OTA升级方法。
一种计算机可读存储介质,其上存储有计算机程序,所述计算机程序被处理器执行一种基于蓝牙的多设备OTA升级方法。
一种计算机程序产品,包括计算机程序/指令,该计算机程序/指令被处理器执行时实现一种基于蓝牙的多设备OTA升级方法。
相比现有技术,本发明的有益效果在于:
本发明提供一种基于蓝牙的多设备OTA升级方法,可以对总线上所有类型的所有设备进行固件升级,可以通过获取了最新固件及版本信息的从机对其连接的其他从机进行固件升级,不受设备位置部署或信号遮挡的限制。
上述说明仅是本发明技术方案的概述,为了能够更清楚了解本发明的技术手段,并可依照说明书的内容予以实施,以下以本发明的较佳实施例并配合附图详细说明如后。本发明的具体实施方式由以下实施例及其附图详细给出。
附图说明
此处所说明的附图用来提供对本发明的进一步理解,构成本申请的一部分,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限 定。在附图中:
图1为本发明实施例的房车系统中设备分布示意图;
图2为本发明实施例的能与主机直接相连的设备OTA升级方法流程图;
图3为本发明实施例的不能与主机直接相连的设备OTA升级方法流程图。
具体实施方式
下面,结合附图以及具体实施方式,对本发明做进一步描述,需要说明的是,在不相冲突的前提下,以下描述的各实施例之间或各技术特征之间可以任意组合形成新的实施例。
如图1所示,房车系统中默认的蓝牙主机为中控屏,中控屏具有上网功能,可以从官网直接下载最新的各个设备的固件,中控屏和系统中的各个设备都有蓝牙,但由于各个设备在房车中的位置部署或信号遮挡,中控屏的蓝牙不能直接与每个设备的蓝牙相连,如图1中的中控屏不能直接连接到DCDC和控制器2。
一种基于蓝牙的多设备OTA升级方法,如图2、图3所示,包括以下步骤:
每个设备都需要保存总线中所有类型设备的固件及版本信息,如图1中的电池也保存有控制器、DCDC的固件。固件头包括固件名称、固件版本和固件校验,固件名称用于区分该固件用于哪种设备,固件版本用于设备区分新旧状态,固件校验用于验证接收到固件的正确性。
检查固件版本,对4G、蓝牙等硬件初始化后,主机检查服务器固件是否有更新,是则从服务器下载最新的各个设备的固件。具体地,主机定时(如60秒)从服务器检查固件版本,若检查到的固件版本比已存储的固件版本新,则从服务器下载最新的各个设备的固件。
建立连接,主机蓝牙扫描从机,主机与扫描到的设备建立蓝牙连接,发送所有设备的最新的固件版本信息。若主机蓝牙扫描从机,发现新设备,则与新 设备建立蓝牙连接,发送所有设备的最新的固件版本信息。
固件升级,若从机设备接收到的固件版本比已存储的固件版本新,则发起升级请求,开始升级,从而与主机直接相连的设备都可以升级到最新固件。若从机设备自身固件进行了更新,则重启设备,运行更新后固件,并跳转至硬件初始化步骤。
切换主机模式,从机设备从主机获取到最新的固件后,定时切换到主机模式,如每十分钟一次,切换到主机模式的设备蓝牙扫描从机,并通过蓝牙连接主机连接不到的设备,若发现新设备,则与新设备建立蓝牙连接,切换到主机模式的设备跳转至建立连接步骤对连接的设备的固件进行升级。如图1中的控制器1在获取到中控屏的最新固件后,切换到主机模式,连接DCDC和控制器2,对DCDC和控制器2的固件进行更新,从而DCDC和控制器2也可以升级到最新的固件,控制器1起到中继器的作用。
切换从机模式,切换到主机模式的设备在完成OTA任务后,再次切换到从机模式,并与主机相连。如图1中的控制器1在更新完DCDC和控制器2的固件后,切换成从机,与中控屏相连,完成OTA以外的其它信息交互,如电流电压上报等。从机设备切换到主机模式后,若在预设时间内(如一分钟)搜索不到从机,则返回从机模式,并与主机相连,完成OTA以外的其它信息交互,如图1中的逆变器在其范围内没有连接不到中控屏的设备,搜索时间到后重新与中控屏连接,完成OTA以外的其它信息交互,如电流电压上报等。
应当注意的是,本发明与MESH组网不同,MESH组网对蓝牙有特殊要求,本发明适用于所有蓝牙。
一种电子设备,包括:处理器;
存储器;以及程序,其中所述程序被存储在所述存储器中,并且被配置成 由处理器执行,所述程序包括用于执行一种基于蓝牙的多设备OTA升级方法。
一种计算机可读存储介质,其上存储有计算机程序,所述计算机程序被处理器执行一种基于蓝牙的多设备OTA升级方法。
一种计算机程序产品,包括计算机程序/指令,该计算机程序/指令被处理器执行时实现一种基于蓝牙的多设备OTA升级方法。
以上,仅为本发明的较佳实施例而已,并非对本发明作任何形式上的限制;凡本行业的普通技术人员均可按说明书附图所示和以上而顺畅地实施本发明;但是,凡熟悉本专业的技术人员在不脱离本发明技术方案范围内,利用以上所揭示的技术内容而做出的些许更动、修饰与演变的等同变化,均为本发明的等效实施例;同时,凡依据本发明的实质技术对以上实施例所作的任何等同变化的更动、修饰与演变等,均仍属于本发明的技术方案的保护范围之内。

Claims (10)

  1. 一种基于蓝牙的多设备OTA升级方法,其特征在于,包括以下步骤:
    检查固件版本,主机检查服务器固件是否有更新,是则从服务器下载最新的各个设备的固件;
    建立连接,主机与设备建立蓝牙连接,发送所有设备的最新的固件版本信息;
    固件升级,若从机设备接收到的固件版本比已存储的固件版本新,则发起升级请求,开始升级;
    切换主机模式,从机设备从主机获取到最新的固件后,定时切换到主机模式,并通过蓝牙连接主机连接不到的设备,切换到主机模式的设备跳转至所述建立连接步骤对连接的设备的固件进行升级;
    切换从机模式,切换到主机模式的设备在完成OTA任务后,再次切换到从机模式,并与主机相连。
  2. 如权利要求1所述的一种基于蓝牙的多设备OTA升级方法,其特征在于:所述主机和从机内均存储总线中所有类型设备的固件及其版本信息。
  3. 如权利要求1所述的一种基于蓝牙的多设备OTA升级方法,其特征在于:所述切换主机模式步骤中,从机设备切换到主机模式后,若在预设时间内搜索不到从机,则返回从机模式,并与主机相连。
  4. 如权利要求1所述的一种基于蓝牙的多设备OTA升级方法,其特征在于:固件头包括固件名称、固件版本和固件校验。
  5. 如权利要求1所述的一种基于蓝牙的多设备OTA升级方法,其特征在于:所述检查固件版本步骤中,主机定时从服务器检查固件版本,若检查到的固件版本比已存储的固件版本新,则从服务器下载最新的各个设备的固件。
  6. 如权利要求1所述的一种基于蓝牙的多设备OTA升级方法,其特征在于:所述建立连接步骤中,主机蓝牙扫描从机,若发现新设备,则与新设备建立蓝牙连接,发送所有设备的最新的固件版本信息。
  7. 如权利要求1所述的一种基于蓝牙的多设备OTA升级方法,其特征在于:所述固件升级步骤中,若从机设备自身固件进行了更新,则重启设备,运行更新后固件;
    所述切换主机模式步骤中,切换到主机模式的设备蓝牙扫描从机,若发现新设备,则与新设备建立蓝牙连接,发送所有设备的最新的固件版本信息。
  8. 一种电子设备,其特征在于包括:处理器;
    存储器;以及程序,其中所述程序被存储在所述存储器中,并且被配置成由处理器执行,所述程序包括用于执行如权利要求1-7任意一项所述的方法。
  9. 一种计算机可读存储介质,其上存储有计算机程序,其特征在于:所述计算机程序被处理器执行如权利要求1-7任意一项所述的方法。
  10. 一种计算机程序产品,包括计算机程序/指令,其特征在于,该计算机程序/指令被处理器执行时实现如权利要求1-7任意一项所述的方法。
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