1 Star 0 Fork 1

dgiot开源社区 / dgiot_meter

加入 Gitee
与超过 1200万 开发者一起发现、参与优秀开源项目,私有仓库也完全免费 :)
免费加入
克隆/下载
贡献代码
同步代码
取消
提示: 由于 Git 不支持空文件夾,创建文件夹后会生成空的 .keep 文件
Loading...
README
Apache-2.0

本项目将通过实战的形式展示如何通过数蛙工业物联网Saas平台开发自己的行业插件应用,并能基于自己的行业插件模型,开发自己的行业云函数,逐步成长为行业专家.

本来想通过一个虚拟的项目来进行讲解,由于当前有好几个客户项目需要用到过电表集抄,考虑到电表集抄应用非常广泛,就以电表为例进行来展开数蛙工业物联网Saas平台第一个开源项目培训。

一点心得

这几年在物联网项目中爬坑的一点心,套用道家几句话,希望能对您今后的工业物联网实践有帮助

  • 顺其自然

调研阶段要多观察,抓住物理层本身的规律,抓住事物的本质,不要凭空胡思乱想

  • 清净无为

设计阶段要如庖丁解牛,顺着物理层本身关系,去映射虚拟层,不要凭空添加路由

  • 万物均衡

运营阶段要不偏不倚, 在时空维度上做好均衡,进行各种削峰处理,保持长期稳定运行

典型案例是陶总在时间维度对物的观察创造了Tdengine,Joe Armstrong在空间维度对物的观察创造了Erlang

用户场景

从用户到设备,主要需要解决如下几个问题:

  • 人与设备的关系,User基于流动性,权限系统里一般不会直接绑定User与Device的权限关系,中间会通过Department(Role)来间接绑定ACL

  • 设备与设备的关系,设备与设备之间有可能存在真实的关系,例如DTU与Meter,也可能只有一种虚拟关系,例如Group与DTU,属于因工程需要,临时拉群

  • 对具体设备来说,1、需要一个UID来表征身份;2、需要一个route来表征关系;3、需要多个tag来表征特征

  • 重点讨论Meter、DTU和TCP Server的交互过程

    No. 名称 Meter DTU TCP Server 说明
    1 连接 send -> [IP] ack <-- [IP] 必选
    2 登陆 send -> [DtuAddr] ack <-- [DtuAddr] 可选,可用IP代替
    3 扫串口 ack-> [485] send <-- [search 485] send <--[search 485] 可选,有档案可免
    4 扫modbus ack-> [modbus] send <-- [search modbus] send <--[search modbus] 可选,有档案可免
    5 扫表 ack-> [Meter Addr] send <-- [search meter] send <--[search meter] 可选,有档案可免
    6 抄表 ack-> [Meter Data] send <-- [read meter] send <--[read meter] 必选
    7 写表 ack-> [Meter Control] send <-- [write meter] send <--[write meter] 可选
    8 登出 send -> [DtuAddr] ack <-- [DtuAddr] 可选
    9 断开 send -> [IP] do_something 必选

    扫串口、扫描modbus、扫表是一个费时费流量的操作,例如扫表一般至少需要扫256次,一般只会在物联网工程施工阶段进行,并完成相应的自动注册功能,形成设备档案,正常运行中不进行这些操作。

    这也是为什么电力抄表非常强调电表档案建设,如果没有档案,每一次DTU掉线都需要重新进行非常耗时耗流量的扫描任务

整体交互流程如下

---------------------------------------------------------------------------------------------------------------------
|             物理层                                      |   连接层                 |      虚拟层            | 应用层|
---------------------------------------------------------------------------------------------------------------------
         User1(Session)                User2(Session)                           
             |                              |           
            API                            API             <--http--> shuwa_rest  --+
             |                              |                                       |
             +                              +                                       |
        Department1(Role)             Department2(Role)                             |
             |                              |                                       |
            ACL                            ACL            <--parse--> shuaw_parse --+
             +                              +                                       |              +-- 时序数据--+
         Group(Devcie)                 Group(Devcie)                                |              |            |
             |                              |                                       | === 流计算==> 物理层镜像    +--> 批量计算      
    +--------+-------+                      +                                       |              |            |
    |                |                      |                                       |              +-- 关系数据--+              
DTU1(Device1)    DTU2(Device)           DTU3(Device)        <--tcp-->  tcp_server ---+
    |                |                      |                                       | 
modbus             modbus                modbus            <--modbus-->  proctol ---+
    |                |                      |                                       |
    +                +                      +                                       |
   485              485                     485             <--485-->    proctol  --+ 
    |                |                      |                                       |
    +                +             +--------+--------+                              |
    |                |             |                 |                              |
Meter1(Device) Meter2(Device) Meter4(Device)Meter5(Device)<--DLT/645--> proctol --+                

在正式动手之前,请先体会一下心得和理解用户场景

培训纲要

  • 学会创建一个部门
  • 学会创建一个岗位
  • 学会创建一个用户
  • 学会创建一个应用
  • 学习创建一个API
  • 学会创建一个分组
  • 学会创建一个产品
  • 学会创建一个设备
  • 学会创建一个指令
  • 学会创建一个子设备
  • 学会创建一个物模型
  • 学会创建一个组态
  • 学会创建一个通道
  • 学会创建一个规则
  • 学会开发一个插件
  • 学会接入一个设备
  • 学会设计一个统计量
  • 学会状态迁移编程
  • 学会网络通信编程
  • 学会消息路由编程
  • 学会设备动态注册

详细步骤

Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. "You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License. "Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types. "Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below). "Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof. "Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution." "Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work. 2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form. 3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed. 4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions: (a) You must give any other recipients of the Work or Derivative Works a copy of this License; and (b) You must cause any modified files to carry prominent notices stating that You changed the files; and (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License. You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License. 5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions. 6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file. 7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License. 8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages. 9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability. END OF TERMS AND CONDITIONS

简介

暂无描述 展开 收起
Erlang 等 2 种语言
Apache-2.0
取消

发行版

暂无发行版

贡献者

全部

近期动态

加载更多
不能加载更多了
1
https://gitee.com/dgiiot/dgiot_meter.git
git@gitee.com:dgiiot/dgiot_meter.git
dgiiot
dgiot_meter
dgiot_meter
master

搜索帮助