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# 创建 AWS 物联网 FleetWise 信号目录
<a name="create-signal-catalog"></a>

您可以使用 [CreateSignalCatalog](https://docs.aws.amazon.com/iot-fleetwise/latest/APIReference/API_CreateSignalCatalog.html)API 操作来创建信号目录。以下示例使用 AWS CLI。

要创建信号目录，请运行以下命令。

*signal-catalog-configuration*替换为包含配置的.json 文件的名称。

```
aws iotfleetwise create-signal-catalog --cli-input-json file://signal-catalog-configuration.json
```

## 信号目录配置
<a name="signal-catalog-configuration"></a>
+ *signal-catalog-name*替换为您正在创建的信号目录的名称。
+ （可选）*description*替换为描述以帮助您识别信号目录。

有关如何配置分支、属性、传感器和执行器的更多信息，请参阅[配置 AWS 物联网 FleetWise 信号](define-signal.md)。

```
{
    "name": "signal-catalog-name",
    "description": "description",
    "nodes": [
  {
    "branch": {
      "fullyQualifiedName": "Types"
    }
  },
  {
    "struct": {
      "fullyQualifiedName": "Types.sensor_msgs_msg_CompressedImage"
    }
  },
  {
    "struct": {
      "fullyQualifiedName": "Types.std_msgs_Header"
    }
  },
  {
    "struct": {
      "fullyQualifiedName": "Types.builtin_interfaces_Time"
    }
  },
  {
    "property": {
      "fullyQualifiedName": "Types.builtin_interfaces_Time.sec",
      "dataType": "INT32",
      "dataEncoding": "TYPED"
    }
  },
  {
    "property": {
      "fullyQualifiedName": "Types.builtin_interfaces_Time.nanosec",
      "dataType": "UINT32",
      "dataEncoding": "TYPED"
    }
  },
  {
    "property": {
      "fullyQualifiedName": "Types.std_msgs_Header.stamp",
      "dataType": "STRUCT",
      "structFullyQualifiedName": "Types.builtin_interfaces_Time"
    }
  },
  {
    "property": {
      "fullyQualifiedName": "Types.std_msgs_Header.frame_id",
      "dataType": "STRING",
      "dataEncoding": "TYPED"
    }
  },
  {
    "property": {
      "fullyQualifiedName": "Types.sensor_msgs_msg_CompressedImage.header",
      "dataType": "STRUCT",
      "structFullyQualifiedName": "Types.std_msgs_Header"
    }
  },
  {
    "property": {
      "fullyQualifiedName": "Types.sensor_msgs_msg_CompressedImage.format",
      "dataType": "STRING",
      "dataEncoding": "TYPED"
    }
  },
  {
    "property": {
      "fullyQualifiedName": "Types.sensor_msgs_msg_CompressedImage.data",
      "dataType": "UINT8_ARRAY",
      "dataEncoding": "BINARY"
    }
  },
  {
    "branch": {
      "fullyQualifiedName": "Vehicle",
      "description": "Vehicle"
    }
  },
  {
    "branch": {
      "fullyQualifiedName": "Vehicle.Cameras"
    }
  },
  {
    "branch": {
      "fullyQualifiedName": "Vehicle.Cameras.Front"
    }
  },
  {
    "sensor": {
      "fullyQualifiedName": "Vehicle.Cameras.Front.Image",
      "dataType": "STRUCT",
      "structFullyQualifiedName": "Types.sensor_msgs_msg_CompressedImage"
    }
  },
  {
    "struct": {
      "fullyQualifiedName": "Types.std_msgs_msg_Float64"
    }
  },
  {
    "property": {
      "fullyQualifiedName": "Types.std_msgs_msg_Float64.data",
      "dataType": "DOUBLE",
      "dataEncoding": "TYPED"
    }
  },
  {
    "sensor": {
      "fullyQualifiedName": "Vehicle.Velocity",
      "dataType": "STRUCT",
      "structFullyQualifiedName": "Types.std_msgs_msg_Float64"
    }
  },
  {
    "struct": {
      "fullyQualifiedName": "Types.sensor_msgs_msg_RegionOfInterest"
    }
  },
  {
    "property": {
      "fullyQualifiedName": "Types.sensor_msgs_msg_RegionOfInterest.x_offset",
      "dataType": "UINT32",
      "dataEncoding": "TYPED"
    }
  },
  {
    "property": {
      "fullyQualifiedName": "Types.sensor_msgs_msg_RegionOfInterest.y_offset",
      "dataType": "UINT32",
      "dataEncoding": "TYPED"
    }
  },
  {
    "property": {
      "fullyQualifiedName": "Types.sensor_msgs_msg_RegionOfInterest.height",
      "dataType": "UINT32",
      "dataEncoding": "TYPED"
    }
  },
  {
    "property": {
      "fullyQualifiedName": "Types.sensor_msgs_msg_RegionOfInterest.width",
      "dataType": "UINT32",
      "dataEncoding": "TYPED"
    }
  },
  {
    "property": {
      "fullyQualifiedName": "Types.sensor_msgs_msg_RegionOfInterest.do_rectify",
      "dataType": "BOOLEAN",
      "dataEncoding": "TYPED"
    }
  },
  {
    "branch": {
      "fullyQualifiedName": "Vehicle.Perception"
    }
  },
  {
    "sensor": {
      "fullyQualifiedName": "Vehicle.Perception.Obstacle",
      "dataType": "STRUCT",
      "structFullyQualifiedName": "Types.sensor_msgs_msg_RegionOfInterest"
    }
  }
]
}
```

**注意**  
您可以下载[演示脚本](https://raw.githubusercontent.com/aws/aws-iot-fleetwise-edge/main/tools/cloud/ros2-to-nodes.py)，将 ROS 2 消息转换为与信号目录兼容的 VSS .json 文件。有关更多信息，请参阅[视觉系统数据开发人员指南**](https://github.com/aws/aws-iot-fleetwise-edge/blob/main/docs/dev-guide/vision-system-data/vision-system-data-demo.ipynb)。  
视觉系统数据目前为预览版，可能会发生变化。

如果您[启用了使用客户托管 AWS KMS 密钥的加密](key-management.md)，请包括以下政策声明，以便您的角色可以调用 `CreateSignalCatalog` API 操作。

------
#### [ JSON ]

****  

```
{
    "Version":"2012-10-17",		 	 	 
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "kms:GenerateDataKey*",
                "kms:Decrypt"
            ],
            "Resource": [
                "arn:aws:kms:us-east-1:111122223333:key/KMS_KEY_ID"
            ]
        }
    ]
}
```

------