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Please answer all question Subject: IoT A proposed IoT room occupancy monitoring system that is designed to detect the temperature and light is represented with

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Please answer all question

Subject: IoT

A proposed IoT room occupancy monitoring system that is designed to detect the temperature and light is represented with the block diagram in Figure 4. The temperature detection range is from 0C to 40C. LM35 is to be used as the temperature sensor. Meanwhile, the light intensity detection range is from 100 lux to 1000 lux. Light dependent resistor (LDR) is to be used as the light sensor and the corresponding resistance for the LDR for the minimum (100 lux) and maximum (1000 lux) range is 10k and 800 respectively. [Satu sistem pemantauan penggunaan bilik IoT bakal dibangunakan dengan mengesan suhu dan cahaya. Sistem tersebut digambarkan dengan gambarajah blok di Rajah 4. Julat pengesanan suhu ialah dari 0C hingga 40C. LM35 akan digunakan sebagai penderia suhu. Manakala julat pengesanan cahaya ialah dari 100 lux hingga 1000 lux.Perintang peka cahaya (LDR) akan digunakan sebagai penderia cahaya dan rintangan LDR untuk julat minimum (100 lux) dan maksimum (1000 lux) ialah 10k and 800. 1 (a) Propose and design suitable amplifiers that will interface the transducers to the respective ADCs. [Kamu dikehendaki untuk merekabentuk penguat-penguat yang sesuai untuk meyambungkan transduser- transduser tersebut dengan ADC berkaitan.] (i) Amplifier 1 [ Penguat I] (ii) Amplifier 2 (6 Marks / Markah) [ Penguat 2] (8 Marks / Markah) (b) If the light sensor circuit is affected by noise, design a suitable filter to remove the noise. Assume that noise starts at 10kHz. [Jika litar pengesanan cahaya terjejas daripada hingar, rekabentuk satu penapis yang sesuai untuk mengeluarkan hingar. Andaikan frekuensi hingar bermula pada 10kHz.] (3 Marks / Markah) (c) Calculate amplifier 1 effective input (ei) at 40C if the output impedance of the sensor is 10k and input impedance of the amplifier is 10k. [Kirakan masukan efektif (ei) penguat 1 pada 40C sekiranya galangan keluaran daripada penderia adalah 10k dan galangan masukan juga adalah 10k.] (3 Marks / Markah) The Sharp DP2Y0A is a long range infrared sensor that is able to measure distances from 20 to 150cm with great accuracy. The sensor's specification and output response is given in Figure 5a and Figure 5b. [Sharp DP2Y0A adalah penderia inframerah jarak jauh yang mampu mengukur jarak dari 20cm hingga 150cm dengan ketepatan tinggi. Spesifikasi penderia dan keluaran diberikan dalam Rajah 5a dan Rajah 5b.] Figure 5a [Rajah 5a] Recently hired by an electronics company, you were tasked in upgrading a power generator oil level mechanism to an IoT system. The task requires you to design an automated electronics system that will monitor the level inside an oil storage tank using the Sharp DP2Y0A infrared sensor. Arrangement of the sensor and tank level drawing is given in Figure 5c. [Anda baru diambil bekerja di sebuah syarikat elektronik dan ditugaskan bagi menambahbaik sistem pengesanan aras minyak janakuasa manual kepada sistem elektronik. Tugas ini memerlukan anda bagi menghasilkan sistem elektronik automatik yang akan mengawas aras minyak dalam tangki simpanan To avoid the oil tank from overflowing and causing environmental impact, the oil level has to be kept at a constant 100cm level. Your proposed IoT system must be able to monitor the condition inside the oil tank and raise an alarm once the oil level have reached critical level at 20cm and 120cm. [Bagi mengelakkan minyak dari melimpah dan menyebabkan kesan terhadap alam sekitar, aras minyak perlu dikekalkan pada nilai 100cm. Sistem pemantauan yang anda cadangkan perlu berupaya memantau keadaan dalam tangki dan membunyikan penggera sekiranya aras minyak mencapai nilai kritikal 0cm dan 120cm. (a) Sketch the flowchat of your proposed system. [Lukiskan carta alir bagi sistem yang dicadangkan.] (5 Marks / Markah) (b) Calculate the sensor output at critical oil level (empty, 20cm,70cm,100cm and 120cm ). [Kirakan keluaran penderia pada paras minyak kritikal (kosong, 20cm, 70cm,100cm dan 120cm). (5 Marks / Markah) (c) Design a suitable differential amplifier for the system that will produce 0V at 20 cm and 5V at 120cm. Verify the output voltage calculation at 20cm and 120cm. Assume the supply voltage is 5V. [Rekabentuk satu penguat pembezaan yang bersesuaian bagi sistem ini yang akan memberikan keluaran 0V pada 20cm dan 5V pada 120cm. Sahkan pengiraan voltan keluaran pada nilai 20 cm dan 120cm. Anggap voltan bekalan adalah 5V.] (6 Marks / Markah) (d) Propose a suitable network communication architecture if the system has to monitor 10 different tanks in a hillside area spanning 1km radius. Justify why the proposed communication design is the best for the implementation A proposed IoT room occupancy monitoring system that is designed to detect the temperature and light is represented with the block diagram in Figure 4. The temperature detection range is from 0C to 40C. LM35 is to be used as the temperature sensor. Meanwhile, the light intensity detection range is from 100 lux to 1000 lux. Light dependent resistor (LDR) is to be used as the light sensor and the corresponding resistance for the LDR for the minimum (100 lux) and maximum (1000 lux) range is 10k and 800 respectively. [Satu sistem pemantauan penggunaan bilik IoT bakal dibangunakan dengan mengesan suhu dan cahaya. Sistem tersebut digambarkan dengan gambarajah blok di Rajah 4. Julat pengesanan suhu ialah dari 0C hingga 40C. LM35 akan digunakan sebagai penderia suhu. Manakala julat pengesanan cahaya ialah dari 100 lux hingga 1000 lux.Perintang peka cahaya (LDR) akan digunakan sebagai penderia cahaya dan rintangan LDR untuk julat minimum (100 lux) dan maksimum (1000 lux) ialah 10k and 800. 1 (a) Propose and design suitable amplifiers that will interface the transducers to the respective ADCs. [Kamu dikehendaki untuk merekabentuk penguat-penguat yang sesuai untuk meyambungkan transduser- transduser tersebut dengan ADC berkaitan.] (i) Amplifier 1 [ Penguat I] (ii) Amplifier 2 (6 Marks / Markah) [ Penguat 2] (8 Marks / Markah) (b) If the light sensor circuit is affected by noise, design a suitable filter to remove the noise. Assume that noise starts at 10kHz. [Jika litar pengesanan cahaya terjejas daripada hingar, rekabentuk satu penapis yang sesuai untuk mengeluarkan hingar. Andaikan frekuensi hingar bermula pada 10kHz.] (3 Marks / Markah) (c) Calculate amplifier 1 effective input (ei) at 40C if the output impedance of the sensor is 10k and input impedance of the amplifier is 10k. [Kirakan masukan efektif (ei) penguat 1 pada 40C sekiranya galangan keluaran daripada penderia adalah 10k dan galangan masukan juga adalah 10k.] (3 Marks / Markah) The Sharp DP2Y0A is a long range infrared sensor that is able to measure distances from 20 to 150cm with great accuracy. The sensor's specification and output response is given in Figure 5a and Figure 5b. [Sharp DP2Y0A adalah penderia inframerah jarak jauh yang mampu mengukur jarak dari 20cm hingga 150cm dengan ketepatan tinggi. Spesifikasi penderia dan keluaran diberikan dalam Rajah 5a dan Rajah 5b.] Figure 5a [Rajah 5a] Recently hired by an electronics company, you were tasked in upgrading a power generator oil level mechanism to an IoT system. The task requires you to design an automated electronics system that will monitor the level inside an oil storage tank using the Sharp DP2Y0A infrared sensor. Arrangement of the sensor and tank level drawing is given in Figure 5c. [Anda baru diambil bekerja di sebuah syarikat elektronik dan ditugaskan bagi menambahbaik sistem pengesanan aras minyak janakuasa manual kepada sistem elektronik. Tugas ini memerlukan anda bagi menghasilkan sistem elektronik automatik yang akan mengawas aras minyak dalam tangki simpanan To avoid the oil tank from overflowing and causing environmental impact, the oil level has to be kept at a constant 100cm level. Your proposed IoT system must be able to monitor the condition inside the oil tank and raise an alarm once the oil level have reached critical level at 20cm and 120cm. [Bagi mengelakkan minyak dari melimpah dan menyebabkan kesan terhadap alam sekitar, aras minyak perlu dikekalkan pada nilai 100cm. Sistem pemantauan yang anda cadangkan perlu berupaya memantau keadaan dalam tangki dan membunyikan penggera sekiranya aras minyak mencapai nilai kritikal 0cm dan 120cm. (a) Sketch the flowchat of your proposed system. [Lukiskan carta alir bagi sistem yang dicadangkan.] (5 Marks / Markah) (b) Calculate the sensor output at critical oil level (empty, 20cm,70cm,100cm and 120cm ). [Kirakan keluaran penderia pada paras minyak kritikal (kosong, 20cm, 70cm,100cm dan 120cm). (5 Marks / Markah) (c) Design a suitable differential amplifier for the system that will produce 0V at 20 cm and 5V at 120cm. Verify the output voltage calculation at 20cm and 120cm. Assume the supply voltage is 5V. [Rekabentuk satu penguat pembezaan yang bersesuaian bagi sistem ini yang akan memberikan keluaran 0V pada 20cm dan 5V pada 120cm. Sahkan pengiraan voltan keluaran pada nilai 20 cm dan 120cm. Anggap voltan bekalan adalah 5V.] (6 Marks / Markah) (d) Propose a suitable network communication architecture if the system has to monitor 10 different tanks in a hillside area spanning 1km radius. Justify why the proposed communication design is the best for the implementation

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