一种用于起重机监控的 AWS IoT Events 探测器模型

监控您的设备或设备群是否出现故障或运行变化，并在此类事件发生时触发操作。您可以用 JSON 定义检测器模型，用于指定状态、规则和操作。这使您可以监控温度和压力等输入，跟踪阈值违规情况并发送警报。这些示例显示了起重机和电机的探测器模型，用于检测过热问题，并在超过阈值时由 Amazon SNS 发出通知。您可以在不中断监控的情况下更新模型以优化行为。

文件：craneDetectorModel.json

{
    "detectorModelName": "craneDetectorModel",
    "detectorModelDefinition": {
        "states": [
            {
                "stateName": "Running",
                "onEnter": {
                    "events": [
                        {
                            "eventName": "init",
                            "condition": "true",
                            "actions": [
                                {
                                    "setVariable": {
                                        "variableName": "craneThresholdBreached",
                                        "value": "0"
                                    }
                                }
                            ]
                        }
                    ]
                },
                "onInput": {
                    "events": [
                        {
                            "eventName": "Overheated",
                            "condition": "$input.TemperatureInput.temperature > 35",
                            "actions": [
                                {
                                    "setVariable": {
                                        "variableName": "craneThresholdBreached",
                                        "value": "$variable.craneThresholdBreached + 1"
                                    }
                                }
                            ]
                        },
                        {
                            "eventName": "Crane Threshold Breached",
                            "condition": "$variable.craneThresholdBreached > 5",
                            "actions": [
                                {
                                    "sns": {
                                        "targetArn": "arn:aws:sns:us-east-1:123456789012:CraneSNSTopic"
                                    }
                                }
                            ]
                        },
                        {
                            "eventName": "Underheated",
                            "condition": "$input.TemperatureInput.temperature < 25",
                            "actions": [
                                {
                                    "setVariable": {
                                        "variableName": "craneThresholdBreached",
                                        "value": "0"
                                    }
                                }
                            ]
                        }
                    ]
                }
            }
        ],
        "initialStateName": "Running"
    },
    "key": "craneid",
    "roleArn": "arn:aws:iam::123456789012:role/columboSNSRole"
} 

更新现有的探测器模型。文件：updateCraneDetectorModel.json

{
    "detectorModelName": "craneDetectorModel",
    "detectorModelDefinition": {
        "states": [
            {
                "stateName": "Running",
                "onEnter": {
                    "events": [
                        {
                            "eventName": "init",
                            "condition": "true",
                            "actions": [
                                {
                                    "setVariable": {
                                        "variableName": "craneThresholdBreached",
                                        "value": "0"
                                    }
                                },
                                {
                                    "setVariable": {
                                        "variableName": "alarmRaised",
                                        "value": "'false'"
                                    }
                                }
                            ]
                        }
                    ]
                },
                "onInput": {
                    "events": [
                        {
                            "eventName": "Overheated",
                            "condition": "$input.TemperatureInput.temperature > 30",
                            "actions": [
                                {
                                    "setVariable": {
                                        "variableName": "craneThresholdBreached",
                                        "value": "$variable.craneThresholdBreached + 1"
                                    }
                                }
                            ]
                        },
                        {
                            "eventName": "Crane Threshold Breached",
                            "condition": "$variable.craneThresholdBreached > 5 && $variable.alarmRaised == 'false'",
                            "actions": [
                                {
                                    "sns": {
                                        "targetArn": "arn:aws:sns:us-east-1:123456789012:CraneSNSTopic"
                                    }
                                },
                                {
                                    "setVariable": {
                                        "variableName": "alarmRaised",
                                        "value": "'true'"
                                    }
                                }
                            ]
                        },
                        {
                            "eventName": "Underheated",
                            "condition": "$input.TemperatureInput.temperature < 10",
                            "actions": [
                                {
                                    "setVariable": {
                                        "variableName": "craneThresholdBreached",
                                        "value": "0"
                                    }
                                }
                            ]
                        }
                    ]
                }
            }
        ],
        "initialStateName": "Running"
    },
    "roleArn": "arn:aws:iam::123456789012:role/columboSNSRole"
} 

文件：motorDetectorModel.json

{
    "detectorModelName": "motorDetectorModel",
    "detectorModelDefinition": {
        "states": [
            {
                "stateName": "Running",
                "onEnter": {
                    "events": [
                        {
                            "eventName": "init",
                            "condition": "true",
                            "actions": [
                                {
                                    "setVariable": {
                                        "variableName": "motorThresholdBreached",
                                        "value": "0"
                                    }
                                }
                            ]
                        }
                    ]
                },
                "onInput": {
                    "events": [
                        {
                            "eventName": "Overheated And Overpressurized",
                            "condition": "$input.PressureInput.pressure > 70 && $input.TemperatureInput.temperature > 30",
                            "actions": [
                                {
                                    "setVariable": {
                                        "variableName": "motorThresholdBreached",
                                        "value": "$variable.motorThresholdBreached + 1"
                                    }
                                }
                            ]
                        },
                        {
                            "eventName": "Motor Threshold Breached",
                            "condition": "$variable.motorThresholdBreached > 5",
                            "actions": [
                                {
                                    "sns": {
                                        "targetArn": "arn:aws:sns:us-east-1:123456789012:MotorSNSTopic"
                                    }
                                }
                            ]
                        }
                    ]
                }
            }
        ],
        "initialStateName": "Running"
    },
    "key": "motorId",
    "roleArn": "arn:aws:iam::123456789012:role/columboSNSRole"
} 

更新现有的探测器模型。文件：updateMotorDetectorModel.json

{
    "detectorModelName": "motorDetectorModel",
    "detectorModelDefinition": {
        "states": [
            {
                "stateName": "Running",
                "onEnter": {
                    "events": [
                        {
                            "eventName": "init",
                            "condition": "true",
                            "actions": [
                                {
                                    "setVariable": {
                                        "variableName": "motorThresholdBreached",
                                        "value": "0"
                                    }
                                }
                            ]
                        }
                    ]
                },
                "onInput": {
                    "events": [
                        {
                            "eventName": "Overheated And Overpressurized",
                            "condition": "$input.PressureInput.pressure > 70 && $input.TemperatureInput.temperature > 30",
                            "actions": [
                                {
                                    "setVariable": {
                                        "variableName": "motorThresholdBreached",
                                        "value": "$variable.motorThresholdBreached + 1"
                                    }
                                }
                            ]
                        },
                        {
                            "eventName": "Motor Threshold Breached",
                            "condition": "$variable.motorThresholdBreached > 5",
                            "actions": [
                                {
                                    "sns": {
                                        "targetArn": "arn:aws:sns:us-east-1:123456789012:MotorSNSTopic"
                                    }
                                }
                            ]
                        }
                    ]
                }
            }
        ],
        "initialStateName": "Running"
    },
    "roleArn": "arn:aws:iam::123456789012:role/columboSNSRole"
}