Monitoring systems and methods thereof

A method for monitoring an operating efficiency of an air-blowing device in a ventilation system, comprising:

• providing an optimal system curve;
• detecting a first flow rate of the air-blowing device;
• activating the air-blowing device with a first current frequency, obtaining a first fan performance curve of the air-blowing device according to the first current frequency and a test record, and obtaining a preferred efficiency of the air-blowing device by comparing the first fan performance curve with the optimal system curve;
• detecting a first pressure drop at an inlet port of the air-blowing device;
• obtaining a first efficiency by comparing the first flow rate with the first pressure drop;
• estimating an operating efficiency of the air-blowing device by comparing the first efficiency with the preferred efficiency;
• and
• outputting a preferred fan performance curve and operating point.

A system for monitoring an operating efficiency of an air-blowing device in a ventilation system, comprising:

• a control box, activating the air-blowing device;
• a flow rate sensor, detecting flow rate of the air-blowing device;
• a controller, coupled with the control box and the flow rate sensor, and controlling a current frequency of the air-blowing device according to the flow rate;
• and
• wherein the controller pre-storing an optimal system curve, activating the air-blowing device with a first current frequency, obtaining a first fan performance curve of the air-blowing device according to the first current frequency and a test record, obtaining a preferred efficiency of the air-blowing device by comparing the first fan performance curve with the optimal system curve, obtaining a first flow rate of the air-bowering device from the flow rate sensor, obtaining a first system curve and a first efficiency by comparing the first flow rate to the first fan performance curve, and estimating an operating efficiency of the air-blowing device by comparing the first efficiency with the preferred efficiency.

A method for monitoring operating efficiency of a plurality of air-blowing devices in a ventilation system, comprising:

• providing a optimal system curve;
• activating the air-blowing devices with a first current frequency, obtaining a first fan performance curve of the air-blowing devices according to the first current frequency and a test record, and obtaining a preferred efficiency of the air-blowing devices by comparing the first fan performance curve with the optimal system curve;
• detecting a plurality of first flow rates of the air-blowing devices;
• obtaining first efficiency by comparing the first flow rates with the first fan performance curves;
• estimating operating efficiency of the air-blowing devices by comparing the first efficiency with the preferred efficiency;
• and
• outputting a preferred fan performance curve and operating point.

A method for monitoring operating efficiency of a plurality of air-blowing devices in a ventilation system, comprising:

• providing a optimal system curve;
• detecting a plurality of first flow rates of the air-blowing devices;
• activating the air-blowing devices with a first current frequency, obtaining a first fan performance curve of the air-blowing devices according to the first current frequency and a test record, and obtaining a preferred efficiency of the air-blowing devices by comparing the first fan performance curve with the optimal system curve;
• detecting a plurality of first pressure drops at a plurality of inlet ports of the air-blowing devices;
• obtaining first efficiency by comparing the first flow rates with the first pressure drops;
• estimating operating efficiency of the air-blowing devices by comparing the first efficiency with the preferred efficiency;
• and
• outputting a preferred fan performance curve and operating point.

A system for monitoring operating efficiency of a plurality of air-blowing devices in a ventilation system, comprising:

• a control box, activating the air-blowing devices;
• a plurality of flow rate sensors, detecting flow rates of the air-blowing devices;
• and
• a controller, coupled with the control box and the flow rate sensors, and controlling current frequencies of the air-blowing devices according to the flow rates,
• wherein the controller pre-storing an optimal system curve, activating the air-blowing devices with a first current frequency, obtaining a first fan performance curve of the air-blowing devices according to the first current frequency and a test record, obtaining a preferred efficiency of the air-blowing devices by comparing the first fan performance curve with the optimal system curve, obtaining a plurality of first flow rates of the air-blowing devices from the flow rate sensors, obtaining first efficiency by comparing the first flow rates to the first fan performance curves, and estimating operating efficiency of the air-blowing devices by comparing the first efficiency with the preferred efficiency.