Table of Contents
1. 什么是物模型
物模型（Thing Specification Language,TSL）是产品数字化的描述。
物模型由若干条参数组成，参数按描述的功能类型不同，又分为属性、方法和事件。
1.1. 物模型的别名
不同的公司对物模型由不同的名字说法，其本质是一样的，依然是对物体的数字化描述。其中常见的包括：信息模型、物联模型、数据profile、数据 schema、设备模板
| 梯队 | 厂商 | 名称 |
|---|---|---|
| 1 | 微软Azure | Device Twin 设备孪生 |
| 1 | Google cloud Iot Core | Device Data（Device metadata） |
| 1 | 亚马逊 AWS IoT Core | Thing types 物体类型+ Device Shadow 设备影子 |
| 1 | 小米IoT | spec定义 |
| 1 | 阿里云 | Thing Specification Language 物模型+设备影子 |
| 2 | 腾讯云 | 设备影子 |
| 2 | 中国移动OneNet | 物模型 |
| 2 | 华为云 | 产品模型 |
| 2 | IBM Waston | deviceInfo |
| 3 | 百度云 | 物模型（未上线） |
| 3 | 京东 | 物模型（简单） |
1.2. 物模型的技术实现
物模型语法层定义了IoT物模型描述语言的种类，如XML、JSON等。
目前JSON较为通用的
1.3. 定义范围
物模型定义了物，物模型将不同品牌不同品类的产品功能抽象归纳，形成“标准物模型”，便于各方用统一的语言描述、控制、理解产品功能。
为了实现设备功能的统一理解，对于每个品类会定义一套“标准参数”，标准参数包含了某个品类可能用到的所有参数，开发者在定义产品物模型时优先从标准参数中选择，如果标准参数未包含的功能，可以定义“自定义参数”。
2. 物模型的行业标准发展现状
没有统一标准，各自为战。ICA物模型和OneDataModel物模型最为先进1
2.1. ICA物模型
工业互联网产业联盟（Alliance of Industrial Internet, AII）是由阿里巴巴发起，是一个研究物联网接入协议、设备管理等业务标准的行业联盟，是国内物模型研发的领军者。
目前ICA已发布了自定义的物模型标准，包括设备抽象模型及TSL（Things Specification Language）描述语言
2.1.1. 阿里云
阿里云产品功能类型分为三类：属性、服务和事件。
功能类型|说明
--|--
属性（Property）|一般用于描述设备运行时的状态，如环境监测设备所读取的当前环境温度等。属性支持GET和SET请求方式。应用系统可发起对属性的读取和设置请求。
服务（Service）|设备可被外部调用的能力或方法，可设置输入参数和输出参数。相比于属性，服务可通过一条指令实现更复杂的业务逻辑，如执行某项特定的任务。
事件（Event）|设备运行时的事件。事件一般包含需要被外部感知和处理的通知信息，可包含多个输出参数。如，某项任务完成的信息，或者设备发生故障或告警时的温度等，事件可以被订阅和推送。
///阿里云的物模型案例 { "schema": "物模型结构定义的访问URL", "profile": { "productKey": "产品ProductKey" }, "properties": [ { "identifier": "属性唯一标识符（产品下唯一）", "name": "属性名称", "accessMode": "属性读写类型：只读（r）或读写（rw）。", "required": "是否是标准功能的必选属性", "dataType": { "type": "属性类型: int（原生）、float（原生）、double（原生）、text（原生）、date（String类型UTC毫秒）、bool（0或1的int类型）、enum（int类型，枚举项定义方法与bool类型定义0和1的值方法相同）、struct（结构体类型，可包含前面7种类型，下面使用"specs":[{}]描述包含的对象）、array（数组类型，支持int、double、float、text、struct）", "specs": { "min": "参数最小值（int、float、double类型特有）", "max": "参数最大值（int、float、double类型特有）", "unit": "属性单位（int、float、double类型特有，非必填）", "unitName": "单位名称（int、float、double类型特有，非必填）", "size": "数组元素的个数，最大512（array类型特有）。", "step": "步长（text、enum类型无此参数）", "length": "数据长度，最大10240（text类型特有）。", "0": "0的值（bool类型特有）", "1": "1的值（bool类型特有）", "item": { "type": "数组元素的类型（array类型特有）" } } } } ], "events": [ { "identifier": "事件唯一标识符（产品下唯一，其中post是默认生成的属性上报事件。）", "name": "事件名称", "desc": "事件描述", "type": "事件类型（info、alert、error）", "required": "是否是标准功能的必选事件", "outputData": [ { "identifier": "参数唯一标识符", "name": "参数名称", "dataType": { "type": "属性类型: int（原生）、float（原生）、double（原生）、text（原生）、date（String类型UTC毫秒）、bool（0或1的int类型）、enum（int类型，枚举项定义方法与bool类型定义0和1的值方法相同）、struct（结构体类型，可包含前面7种类型，下面使用"specs":[{}]描述包含的对象）、array（数组类型，支持int、double、float、text、struct）", "specs": { "min": "参数最小值（int、float、double类型特有）", "max": "参数最大值（int、float、double类型特有）", "unit": "属性单位（int、float、double类型特有，非必填）", "unitName": "单位名称（int、float、double类型特有，非必填）", "size": "数组元素的个数，最大512（array类型特有）。", "step": "步长（text、enum类型无此参数）", "length": "数据长度，最大10240（text类型特有）。", "0": "0的值（bool类型特有）", "1": "1的值（bool类型特有）", "item": { "type": "数组元素的类型（array类型特有）" } } } } ], "method": "事件对应的方法名称（根据identifier生成）" } ], "services": [ { "identifier": "服务唯一标识符（产品下唯一，其中set/get是根据属性的accessMode默认生成的服务。）", "name": "服务名称", "desc": "服务描述", "required": "是否是标准功能的必选服务", "callType": "async（异步调用）或sync（同步调用）", "inputData": [ { "identifier": "入参唯一标识符", "name": "入参名称", "dataType": { "type": "属性类型: int（原生）、float（原生）、double（原生）、text（原生）、date（String类型UTC毫秒）、bool（0或1的int类型）、enum（int类型，枚举项定义方法与bool类型定义0和1的值方法相同）、struct（结构体类型，可包含前面7种类型，下面使用"specs":[{}]描述包含的对象）、array（数组类型，支持int、double、float、text、struct）", "specs": { "min": "参数最小值（int、float、double类型特有）", "max": "参数最大值（int、float、double类型特有）", "unit": "属性单位（int、float、double类型特有，非必填）", "unitName": "单位名称（int、float、double类型特有，非必填）", "size": "数组元素的个数，最大512（array类型特有）。", "step": "步长（text、enum类型无此参数）", "length": "数据长度，最大10240（text类型特有）。", "0": "0的值（bool类型特有）", "1": "1的值（bool类型特有）", "item": { "type": "数组元素的类型（array类型特有）" } } } } } ], "outputData": [ { "identifier": "出参唯一标识符", "name": "出参名称", "dataType": { "type": "属性类型: int（原生）、float（原生）、double（原生）、text（原生）、date（String类型UTC毫秒）、bool（0或1的int类型）、enum（int类型，枚举项定义方法与bool类型定义0和1的方法相同）、struct（结构体类型，可包含前面7种类型，下面使用"specs":[{}]描述包含的对象）、array（数组类型，支持int、double、float、text、struct）", "specs": { "min": "参数最小值（int、float、double类型特有）", "max": "参数最大值（int、float、double类型特有）", "unit": "属性单位（int、float、double类型特有，非必填）", "unitName": "单位名称（int、float、double类型特有，非必填）", "size": "数组元素的个数，最大512（array类型特有）。", "step": "步长（text、enum类型无此参数）", "length": "数据长度，最大10240（text类型特有）。", "0": "0的值（bool类型特有）", "1": "1的值（bool类型特有）", "item": { "type": "数组元素的类型（array类型特有）" } } } } ], "method": "服务对应的方法名称（根据identifier生成）" } ], //仅自定义模块的TSL中有以下参数。 "functionBlockId": "自定义模块的唯一标识符，模块ID", "functionBlockName": "自定义模块名称" //当产品下添加了自定义模块，默认模块TSL中才有functionBlocks，表示自定义模块列表。 "functionBlocks": [ { "functionBlockId": "自定义模块的唯一标识符，模块ID", "functionBlockName": "自定义模块名称", "productKey": "产品ProductKey" } ] }
2.2. OneDataModel物模型
OneDataModel：该组织是由多个标准化组织、设备商、平台运营商、IoT专家等参与组成的联络工作组（Liaison Group），专注于物模型标准的研究。目前该组织已发布了第一版物模型标准，包含ODM（Object Definition Model）抽象模型和SDF（Simple Definition Format）描述语言。
Github:https://github.com/one-data-model
OneDataModel的主要参与者包括Zigbee 联盟、OCF、 OMA (LWM2M)、BLE Mesh、OneM2M、Google (Weave)、Comcast、Intel、
Silicon Labs等，其中Google、Intel等厂家推动积极。OneDataModel的愿景是将目前的物模型通用化并扩展到所有的物联网设备，在智能
家居领域进行实践，助力行业应用开发，降低制造商成本，增加客户易用性。ODM抽象模型的特点是发展迅速，有成为物模型主流标准的趋势。
{ "title": "SDF Schema", "description": "old, pre-1.0 JSON-schema.org definitions for validating SDF instances against the SDF model.", "$schema": "http://json-schema.org/draft-07/schema#", "type": "object", "properties": { "info": { "type": "object", "properties": { "title": { "type": "string" }, "version": { "type": "string" }, "copyright": { "type": "string" }, "license": { "type": "string" } }, "required": ["title", "version", "copyright", "license"], "additionalProperties": false }, "namespace": { "type": "object", "additionalProperties": { "type": "string" } }, "defaultnamespace": { "type": "string" }, "odmThing": { "description": "Thing is a composition of objects that work together in some way", "type": "object", "additionalProperties": { "$ref": "#/definitions/thingqualities" } }, "odmProduct": { "description": "Product is a composition of things and objects that can model a SKU-level instance of a product", "type": "object", "additionalProperties": { "$ref": "#/definitions/productqualities" } }, "odmObject": { "description": "Object is a set of Properties, Actions, and Events that together perform a particular function", "type": "object", "additionalProperties": { "$ref": "#/definitions/objectqualities" } }, "odmProperty": { "description": "Property represents the state of an instance of an object", "type": "object", "additionalProperties": { "$ref": "#/definitions/propertyqualities" } }, "odmAction": { "description": "Action is a directive to invoke an application layer verb associated with an object", "type": "object", "additionalProperties": { "$ref": "#/definitions/actionqualities" } }, "odmEvent": { "description": "Event represents an occurence of something associated with an object", "type": "object", "additionalProperties": { "$ref": "#/definitions/eventqualities" } }, "odmData": { "description": "Data represents a piece of information that can be the state of a property or a parameter to an action or a signal in an event", "type": "object", "additionalProperties": { "$ref": "#/definitions/dataqualities" } } }, "definitions": { "sdf-pointer": { "type": "string", "format": "uri-reference" }, "pointer-list": { "type": "array", "items": { "$ref": "#/definitions/sdf-pointer" } }, "commonqualities": { "type": "object", "properties": { "description": { "type": "string" }, "$comment": { "type": "string" }, "title": { "type": "string" }, "name": { "type": "string" }, "odmRef": { "$ref": "#/definitions/sdf-pointer" }, "odmType": { "type": "object", "properties": { "$ref": { "type": "string" }, "additionalProperties": false } }, "odmRequired": { "$ref": "#/definitions/pointer-list" } }, "required": [] }, "thingqualities": { "allOf": [ { "$ref": "#/definitions/commonqualities" }, { "type": "object", "properties": { "odmObject": {"$ref": "#/properties/odmObject"}, "odmThing": {"$ref": "#/properties/odmThing"} } } ] }, "productqualities": { "allOf": [ { "$ref": "#/definitions/commonqualities" }, { "type": "object", "properties": { "odmObject": {"$ref": "#/properties/odmObject"}, "odmThing": {"$ref": "#/properties/odmThing"} } } ] }, "objectqualities": { "allOf": [ { "$ref": "#/definitions/commonqualities" }, { "type": "object", "properties": { "odmObject": {"$ref": "#/properties/odmObject"}, "odmProperty": {"$ref": "#/properties/odmProperty"}, "odmAction": {"$ref": "#/properties/odmAction"}, "odmEvent": {"$ref": "#/properties/odmEvent"}, "odmData": {"$ref": "#/properties/odmData"} } } ] }, "propertyqualities": { "allOf": [ { "$ref": "#/definitions/dataqualities" } ] }, "actionqualities": { "allOf":[ { "$ref": "#/definitions/commonqualities" }, { "type": "object", "properties": { "odmInputData": { "$ref": "#/definitions/pointer-list" }, "odmRequiredInputData": { "$ref": "#/definitions/pointer-list" }, "odmOutputData": { "$ref": "#/definitions/pointer-list" } } } ] }, "eventqualities": { "allOf":[ { "$ref": "#/definitions/commonqualities" }, { "type": "object", "properties": { "odmOutputData": { "$ref": "#/definitions/pointer-list" } } } ] }, "dataqualities": { "allOf": [ { "$ref":"#/definitions/commonqualities" }, { "$ref":"#/definitions/jsonschema" }, { "type": "object", "properties": { "units": { "type": "string" }, "scaleMinimum": { "type": "number" }, "scaleMaximum": { "type": "number" }, "observable": { "type": "boolean" }, "readable": { "type": "boolean" }, "writable": { "type": "boolean" }, "nullable": { "type": "boolean" }, "widthInBits": { "type": "number" }, "subtype":{ "type": "string", "enum": ["bytestring", "unixtime"] }, "contentFormat": { "type": "string" } } } ] }, "jsonschema": { "type": "object", "properties": { "$comment": { "type": "string" }, "$ref": { "$ref": "#/definitions/sdf-pointer" }, "type": { "type": "string", "enum": [ "number", "string", "boolean", "integer", "array", "object" ] }, "enum": { "type": "array", "minItems": 1 }, "const": { "oneOf": [ { "type": "number"}, { "type": "string"}, { "type": "boolean"}, { "type": "array"}, { "type": "object"}, { "type": "null"} ] }, "default": { "oneOf": [ { "type": "number"}, { "type": "string"}, { "type": "boolean"}, { "type": "array"}, { "type": "object"}, { "type": "null"} ] }, "pattern": { "type": "string" }, "format": { "type": "string", "enum": [ "date-time", "date", "time", "duration", "email", "idn-email", "hostname", "idn-hostname", "ipv4", "ipv6", "uri", "uri-reference", "iri", "iri-reference", "uuid", "uri-template", "json-pointer", "relative-json-pointer", "regex" ] }, "minimum": { "type": "number" }, "maximum": { "type": "number" }, "exclusiveMinimum": { "type": "boolean" }, "exclusiveMaximum": { "type": "boolean" }, "multipleOf": { "type": "number" }, "maxLength": { "type": "number" }, "minLength": { "type": "number" }, "oneOf": { "type": "array", "minItems": 1 }, "anyOf": { "type": "array", "minItems": 1 }, "allOf": { "type": "array", "minItems": 1 }, "items": { "oneOf": [ { "type": "array" }, { "type": "object" } ] }, "contains": { "oneOf": [ { "type": "array" }, { "type": "object" } ] }, "minItems": { "type": "number" }, "maxItems": { "type": "number" }, "uniqueItems": { "type": "boolean" }, "properties": { "type": "object" } } } } }
2.2.1. 中国移动OneNET
{ "tmThings":{ "tmInfo":{ }, "tmProperty":{ }, "tmAction":{ }, "tmEvent":{ }, } } 参考 《中国移动物模型标准白皮书》
2.2.2. 小米
小米 基于自身丰富的生态产品和ICA物模型进行了模型的修改。这样的架构更加灵活，它将具有某些功能组合的部件抽象成服务，例如空调就是由风扇服务、空气调节服务、指示灯服务组成，增加“服务”层级的意义在于，只要定义了少量的服务，就可以通过不同组合描述不同产品的功能。
digraph a{ spec->服务 spec->属性 spec->方法 spec->事件 }
//小米对于摄像头的定义 { "type": "urn:miot-spec-v2:service:camera:00000007", "description": "Camera", "required-properties": [ "urn:miot-spec-v2:property-v2:streaming-status:00000004", "urn:miot-spec-v2:property-v2:support-video-stream-configuration:00000002", "urn:miot-spec-v2:property-v2:support-audio-stream-configuration:00000002", "urn:miot-spec-v2:property-v2:support-rtp-stream-configuration:00000003", "urn:miot-spec-v2:property-v2:session-id:00000102", "urn:miot-spec-v2:property-v2:conroller-ip-version:00000103", "urn:miot-spec-v2:property-v2:conroller-ip-address:00000104", "urn:miot-spec-v2:property-v2:conroller-video-rtp-port:00000105", "urn:miot-spec-v2:property-v2:conroller-audio-rtp-port:00000106", "urn:miot-spec-v2:property-v2:selected-video-parameters:00000107", "urn:miot-spec-v2:property-v2:selected-audio-parameters:00000108", "urn:miot-spec-v2:property-v2:device-status:00000109", "urn:miot-spec-v2:property-v2:device-ip-version:00000110", "urn:miot-spec-v2:property-v2:device-ip-address:00000111", "urn:miot-spec-v2:property-v2:synchronization-source-for-video:00000112", "urn:miot-spec-v2:property-v2:synchronization-source-for-audio:00000113", "urn:miot-spec-v2:property-v2:session-control:00000119" ], "required-actions": [ "urn:miot-spec-v2:action-v2:get-stream-configuration:00000001", "urn:miot-spec-v2:action-v2:start-stream:00000101", "urn:miot-spec-v2:action-v2:stop-stream:00000201" ], "optional-actions": [ "urn:miot-spec-v2:action:set-stream-configuration:00000009", ], "required-events": [ "urn:miot-spec-v2:event:alert:00000007" ], "optional-events": [ "urn:miot-spec-v2:event:warrning:00000008" ] }
2.3. 工业互联网信息模型3IM
AII：该联盟由工业、信息通信业、互联网等领域百余家单位共同发起，面向工业互联网研究和制定相关的技术标准。近期该联盟正在开展工业互联网信息模型（3IM）研究。工业互联网信息模型将设备、产品或过程等看作对象，由标识、类和属性构成，是对物模型概念的延伸。
2.4. 云平台尝试更加通用性的设计
2.4.1. Azure/ 腾讯云
2.4.1.1. Azure
{ "deviceId": "webcam_68", "etag": "AAAAAAAAAAI=", "deviceEtag": "ODYwMzQ3NDEx", "status": "enabled", "statusUpdateTime": "0001-01-01T00:00:00Z", "connectionState": "Disconnected", "lastActivityTime": "0001-01-01T00:00:00Z", "cloudToDeviceMessageCount": 0, "authenticationType": "certificateAuthority", "x509Thumbprint": { "primaryThumbprint": null, "secondaryThumbprint": null }, "modelId": "", "version": 3, "properties": { "desired": { "location": { "country": "", "state": "", "city": "", "project_id": "44030175", "project_name": "", "address": "彩虹阁1F大堂", "direction": { "angel": 0, "top": "", "left": "", "riht": "", "buttom": "", "others": "" } }, "network": { "pipes": [ "192.168.1.87" ], "mac": "" }, "hardware": { "brand": "", "cpu": "", "gpu": "" }, "jobs": { "online_time": "" }, "部署运维人员": "", "责任人": "", "$metadata": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2, "location": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2, "country": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "state": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "city": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "project_id": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "project_name": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "address": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "direction": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2, "angel": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "top": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "left": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "riht": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "buttom": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "others": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 } } }, "network": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2, "pipes": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "mac": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 } }, "hardware": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2, "brand": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "cpu": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "gpu": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 } }, "jobs": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2, "online_time": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 } }, "部署运维人员": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 }, "责任人": { "$lastUpdated": "2020-12-15T03:48:40.1898182Z", "$lastUpdatedVersion": 2 } }, "$version": 2 }, "reported": { "$metadata": { "$lastUpdated": "2020-12-15T03:48:39.733254Z" }, "$version": 1 } }, "capabilities": { "iotEdge": false } }
2.4.1.2. 腾讯云
{ "state": { "reported": { "attr_name1": "value1" }, "desired": { "attr_name2": "value2" } }, "metadata": { "reported": { "attr_name1": { "timestamp": 123456789 } }, "desired": { "attr_name2": { "timestamp": 123456789 } } }, "version": 1, "timestamp": 123456789 }
2.4.2. AWS
AWS 通过thingTypeProperties+ Device Shadow 两部分进行设备管理
参考 ：
1. AWS IoT Device Shadow service
2. AWS Documentation:AWS IoT Core Developer Guide--Thing types
{ "thingTypes": [ { "thingTypeName": "LightBulb", "thingTypeProperties": { "searchableAttributes": [ "wattage", "model" ], "thingTypeDescription": "light bulb type" }, "thingTypeMetadata": { "deprecated": false, "creationDate": 1468423800950 } } ] }
//reported { "state": { "reported": { "color": "GREEN" } }, "version": 12, "timestamp": 123456779 } //desired { "state": { "desired": { "color": "GREEN" } }, "version": 11, "timestamp": 123456778 }
2.4.3. Google Could
- DeviceConfig
- DeviceState
- DeviceCredential
参考Google Cloud IoT Core Documentation 参考文档
{ "id": string, "name": string, "numId": string, "credentials": [ { object(DeviceCredential) } ], "lastHeartbeatTime": string, "lastEventTime": string, "lastStateTime": string, "lastConfigAckTime": string, "lastConfigSendTime": string, "blocked": boolean, "lastErrorTime": string, "lastErrorStatus": { object(Status) }, "config": { object(DeviceConfig) }, "state": { object(DeviceState) }, "logLevel": enum(LogLevel), "metadata": { string: string, ... }, "gatewayConfig": { object(GatewayConfig) } }
2.4.4. 华为云
{ "device_info":{}, "device_server":{} }
2.4.5. IBM Watson IoT Platform
{ "id": "d:abc123:myType:myDevice", "typeId": "myType", "deviceId": "myDevice", "deviceInfo": { "serialNumber": "100087", "manufacturer": "ACME Co.", "model": "7865", "deviceClass": "A", "description": "My shiny device", "fwVersion": "1.0.0", "hwVersion": "1.0", "descriptiveLocation": "Office 5, D Block" }, "metadata": { "customField1": "customValue1", "customField2": "customValue2" }, "registration": { "auth": { "id": "ibmer@uk.ibm.com", "type": "person" }, "date": "2015-04-08T11:23:23+00:00" }, "status": { "alert": { "enabled": false, "timestamp": "2015-04-08T11:23:24+00:00" } }, }
2.4.6. 百度云
设备影子
参考 https://cloud.baidu.com/doc/IoTCore/s/Nkdildw8v
暂未开放
4. 参考资料
-
[中国移动:物模型标准白皮书 1.0.0] ↩
