[ { "Desc": { "Name": "total_power", "SensorType": "power" }, "Params": { "DbusParam": [ { "ParamName": "T0", "Desc": { "Name": "PSU0_Input_Power", "SensorType": "power" } }, { "ParamName": "T1", "Desc": { "Name": "PSU1_Input_Power", "SensorType": "power" } } ] }, "Expression": "T0 + T1" } ]