A context-awareness system that uses a thermographic camera to monitor energy waste in buildings

Lee, Chijoo; Yang, Hyungjun

doi:10.1016/j.enbuild.2016.11.054

Cited by 4 publications

(3 citation statements)

References 23 publications

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“…Pada saat ini teknologi pengendalian pada motor servo sudah banyak dimanfaatkan didalam dunia robotika maupun industri. Motor servo DC kecil untuk aplikasi miniatur robot (contoh aplikasi lihat Lee [1]) dengan motor servo AC untuk industri (contoh aplikasi lihat Ku [2]) sangat berbeda. Pengaturan sudut motor servo DC kecil umumnya bersifat absolut, sedangkan pada motor servo AC bersifat relatif.…”

Section: Pendahuluanunclassified

Rancang Bangun Umpan Balik Eksternal Untuk Kendali Sudut Motor Servo Berbasis Arduino

Saputra¹,

Pambudi²,

Subagjo³

2016

JTBBT

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Rancang bangun umpan balik eksternal untuk kendali posisi sudut AC motor servo berbasis Arduino menggunakan sensor rotary encoder telah dilakukan. Penelitian ini dilakukan untuk meminimalisir kesalahan posisi sudut absolut dari poros motor. Kendali posisi pada AC motor servo tipe MHMD022G1U diamati bersifat relatif, sehingga peluang terjadinya kesalahan penentuan posisi sudut sangat besar, terutama pada saat terjadi distorsi pulsa atau saat suplai daya hilang. Sensor rotary encoder tipe EP50S8-1024-2F-P-24 dikopel dengan poros motor untuk membaca sudut aktual yang kemudian dijadikan sebagai umpan balik eksternal. Rotary encoder yang menggambarkan position sudut actual dari of AC servo motor menghasilkan digital code 10-bit yang kemudian dikonversi menjadi data desimal dengan rentang 0-1023 menggunakan sebuah mikrokontroler Arduino Nano V3. Data umpan balik yang diterima oleh mikrokontroler Arduino digunakan untuk menyesuaikan posisi atau sudut dari putaran poros motor servo AC. Hasil penelitian menunjukkan bahwa pada kendali sudut motor servo AC terdapat osilasi pada semua variasi frekuensi atau kecepatan yang diberikan dengan standar deviasi 1,62º pada 1 kHz, 1,92º pada 5 kHz, 2,29º pada 10 kHz, dan 19,01º pada 50 kHz. Walaupun demikian, nilai rata-rata posisi sudut putaran motor tetap dapat mengikuti referensi yang diberikan oleh potensiometer.Keywords: motor servo AC, rotary encoder, arduino, kendali sudut

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Section: Pendahuluanunclassified

Rancang Bangun Umpan Balik Eksternal Untuk Kendali Sudut Motor Servo Berbasis Arduino

Saputra¹,

Pambudi²,

Subagjo³

2016

JTBBT

View full text Add to dashboard Cite

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“…For instance, the occupants habitually tend to keep windows and doors open waste energy by creating an additional load on the HVAC system. This may result in an increase of three and a half times more energy utility for the HVAC system when compared to its regular consumption (Lee and Yang, 2017). The aging of equipment, defects in components and systems, and ineffective practices in buildings also cause energy wastages (Fan and Xiao, 2017).…”

Section: Introductionmentioning

confidence: 99%

Analysing the Gap Between Predicted and Actual Operational Energy Consumption in Buildings: A Review

Rajithan¹,

Soorige²,

Amarasinghe³

2021

Proceedings of the 9th World Construction Symposium 2021 on Reshaping Construction: Strategic, Structural and Cultural Transfor

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Operational energy consumption in buildings has a crucial impact on global energy consumption. Nevertheless, significant energy savings can be achieved in buildings if properly designed, constructed, and operated. Building Energy Simulation (BES) plays a vital role in the design and optimisation of buildings. BES is used to compare the cost-effectiveness of energy-conservation measures in the design stage and assess various performance optimisation measures during the operational phase. However, there is a significant ‘performance gap’ between the predicted and the actual energy performance of buildings. This gap has reduced the trust and application of the BES. This article focused on investigating BES, reasons that lead to a performance gap between predicted and actual operational energy consumption of buildings, and the ways of minimising the gap. The article employed a comprehensive literature review as the research methodology. Findings revealed that reasons such as limited understanding of the building design, the complexity of the building design, poor commissioning, occupants’ behaviour, etc., influence the energy performance gap. After that, the strategies have been identified to minimise the energy performance gap such as proper commissioning, creating general models to observe occupants’ behaviour in buildings, and using the general models for energy simulation, ensuring better construction and quality through training and education, etc. Further, the findings of this study could be implemented by practitioners in the construction industry to effectively use energy simulation applications in designing energy-efficient and sustainable buildings.

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“…The thermal infrared cameras can provide a 2-dimensional thermal map of the surface of an object. It has been widely used for building diagnostics [35] and energy monitoring system [36]. The thermal infrared camera can record the radiant thermal energy emitted from an object and converse the heat flux to the temperature with the principle of heat transfer.…”

Section: Sensor Observationsmentioning

confidence: 99%

Indoor physical field estimation from sparse sensor observations

Jiang¹

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A thesis submitted to the Nanyang Technological University in partial fulfillment of the requirements for the degree of Doctor of Philosophy the minimum eigenspace is shown to be monotonically decreasing w.r.t. the worst case error variance (WCEV) of the estimated parameters. We select the sensing location whose observation vector has the maximum projection onto the minimum eigenspace of the current dual observation matrix. The proposed MPME is shown to be one of the most computationally efficient algorithms. Our Monte-Carlo simulations show that MPME outperforms the state of the art, especially when the number of available sensors is very limited. The MPME algorithm can be easily used for the indoor physical field reconstruction, but the current methods cannot because of their high storage requirement and high computation cost.

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A context-awareness system that uses a thermographic camera to monitor energy waste in buildings

Cited by 4 publications

References 23 publications

Rancang Bangun Umpan Balik Eksternal Untuk Kendali Sudut Motor Servo Berbasis Arduino

Rancang Bangun Umpan Balik Eksternal Untuk Kendali Sudut Motor Servo Berbasis Arduino

Analysing the Gap Between Predicted and Actual Operational Energy Consumption in Buildings: A Review

Indoor physical field estimation from sparse sensor observations

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