A compensation algorithm to reduce humidity ratio error due to asynchronous humidity and temperature sensor time constants

Chen, Wei Jen; Teng, Tun Ping

doi:10.1016/j.buildenv.2020.107555

Cited by 6 publications

(2 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They found that the responses and presentation of voltage value signals in each cycle were relatively uniform under several fixed RH environments. Chen et al [19] proposed a method for correcting the error in humidity ratio measurement caused by the delay between humidity and temperature sensors. Yin et al [20] studied dynamic water vapor adsorption at constant temperature or RH.…”

Section: Introductionmentioning

confidence: 99%

The Application of a Self-Made Integrated Three-in-One Microsensor and Commercially Available Wind Speed Sensor to the Cold Air Pipe of the Heating, Ventilation, and Air Conditioning in a Factory for Real-Time Wireless Measurement

Lee

Shieh

Chen

et al. 2023

Sensors

View full text Add to dashboard Cite

In this study, the integrated three-in-one (temperature, humidity, and wind speed) microsensor was made through the technology of the Micro-electro-mechanical Systems (MEMS) to measure three important physical quantities of the internal environment of the cold air pipe of the Heating, Ventilation and Air Conditioning (HVAC) in the factory, plan the installation positions of the integrated three-in-one microsensor and commercially available wind speed sensor required by the internal environment of the cold air pipe, and conduct the actual 310-h long term test and comparison. In the experiment, it was also observed that the self-made micro wind speed sensor had higher stability compared to the commercially available wind speed sensor (FS7.0.1L.195). The self-made micro wind speed sensor has a variation range of ±200 mm/s, while the commercially available wind speed sensor a variation range of ±1000 mm/s. The commercially available wind speed sensor (FS7.0.1L.195) can only measure the wind speed; however, the self-made integrated three-in-one microsensor can conduct real-time measurements of temperature and humidity according to the environment at that time, and use different calibration curves to know the wind speed. As a result, it is more accurate and less costly than commercially available wind speed sensors. The material cost of self-made integrated three-in-one microsensor includes chemicals, equipment usage fees, and wires. In the future, factories may install a large number of self-made integrated three-in-one microsensors in place of commercially available wind speed sensors. Through real-time wireless measurements, the self-made integrated three-in-one microsensors can achieve the control optimization of the HVAC cold air pipe’s internal environment to improve the quality of manufactured materials.

show abstract

Section: Introductionmentioning

confidence: 99%

The Application of a Self-Made Integrated Three-in-One Microsensor and Commercially Available Wind Speed Sensor to the Cold Air Pipe of the Heating, Ventilation, and Air Conditioning in a Factory for Real-Time Wireless Measurement

Lee

Shieh

Chen

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…They found that each sensor had a different sensitivity to radiation, and the influence of the radiation on the temperature measured by the wireless sensor was related to the difference between the black-ball temperature and air temperature. Chen et al [5] proposed a back-off algorithm to reduce the humidity ratio error induced by the time constant of humidity and temperature sensors. Duy et al [6] studied perovskite oxide SrTiO 3 and successfully coated SrTiO 3 , which is difficult to calcine on a polyimide (PI) substrate by using the sol-gel process.…”

Section: Introductionmentioning

confidence: 99%

A Micro Air Velocity Sensor for Measuring the Internal Environment of the Cold Air Ducts of Heating, Ventilation, and Air Conditioning Systems

2022

View full text Add to dashboard Cite

A wireless flexible air velocity microsensor was developed by using micro-electro-mechanical systems (MEMS) technology. Polyimide (PI) material was selected for the waterproof and oilproof requirements of the cold air duct environment of heating, ventilation, and air conditioning (HVAC) systems, and then a wireless flexible micro air velocity sensor was completed. To obtain real-time wireless measurements of the air velocity inside the cold air ducts of an HVAC system, and to create a measurements database, the deployment locations and quantity of micro air velocity sensors for the internal environment of the cold air ducts were planned. A field domain verification was performed to optimize the internal environment control of the cold air ducts of ventilation and air conditioning systems and to enhance the quality and reliability of process materials. This study realized real-time monitoring of velocity in the HVAC ducts of a chemical-fiber plant. A commercial velocity sensor (FS7.0.1L.195) was purchased and a micro-electro-mechanical systems (MEMS) approach was also used to develop a home-built micro air velocity sensor, to optimize the provision of the commercial sensors and our home-built micro air velocity sensor. Comparing the specifications of the two commercially available sensors with our home-built micro air velocity sensor, the results show that the home-built micro air velocity sensor has the advantages of fast response time, simultaneous sensing of three important physical quantities, and low cost.

show abstract

Autonomous System with Cyber-Physical Integrating Features on Public Utility of Chemical Fiber Factory

Chen

Shieh

Lee

et al. 2023

Communications in Computer and Information Science

View full text Add to dashboard Cite

A compensation algorithm to reduce humidity ratio error due to asynchronous humidity and temperature sensor time constants

Cited by 6 publications

References 23 publications

The Application of a Self-Made Integrated Three-in-One Microsensor and Commercially Available Wind Speed Sensor to the Cold Air Pipe of the Heating, Ventilation, and Air Conditioning in a Factory for Real-Time Wireless Measurement

The Application of a Self-Made Integrated Three-in-One Microsensor and Commercially Available Wind Speed Sensor to the Cold Air Pipe of the Heating, Ventilation, and Air Conditioning in a Factory for Real-Time Wireless Measurement

A Micro Air Velocity Sensor for Measuring the Internal Environment of the Cold Air Ducts of Heating, Ventilation, and Air Conditioning Systems

Autonomous System with Cyber-Physical Integrating Features on Public Utility of Chemical Fiber Factory

Contact Info

Product

Resources

About