Aeroponic is the method of cultivating plants inside a conditioned air environment without the use of soil or water medium. This method grows plants suspended in a closed or semi-closed environment (chamber) by spraying the plant's dangling roots and lower stems with nutrient-rich solution. Under this circumstances, controlled environment has a strong potential to improve plants' developmental stages, health, and growth. In the recent decade, aeroponic system is applied intensively for the purpose of growing potato in order to produce disease-free potato seed and in order to have a pesticides-free cultivation environment. It is also predicted that the aeroponic method will be able to lower potato farmers' cost of operation and increase their yields. A monitoring and control system intended for water and nutrients distribution has been designed to support the optimal application of aeroponic cultivation system for seed-potatoes production. The monitoring system was used to monitor the chamber's parameters such as temperature and humidity. meanwhile, the control system was used to manage actuators in delivering water and nutrients. Temperature and humidity data will be displayed on the LCD and be transmitted to computer to facilitate easier monitoring on the plant growing chamber. The overall system has been designed and implemented to receive user-defined setting points by using the keypad. Microcontroller system will automatically regulate actuators for distribution of water (pump and nozzle) and distribution of nutrients (ultrasonic mist maker, fan, and pump). The pH measurement results at various points showed that the nutrient (pH = 5.8) were successfully spread inside the growing chamber. The average measured-temperature and humidity of growing chamber during the water and nutrients delivery process are 19.6 ·C and 83.3% RH, respectively, which meet the environmental requirements for potatoes to grow productively. The system was tested in potato seed greenhouse at Vegetables Research Institute (Balitsa), Ministry of Agriculture, in Lembang, West Java, Indonesia.

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The heart is a vital organ that serves to pump blood to the whole body. A heart rate can be used as a healthy body parameter conditions. Growing evidence suggests that IT-based health records play essential role to drive medical revolution especially on data storage and processing. The heart rate measurement (HRM) process usually involves wearable sensor devices to record patient's data. This data is recorded to help the doctors to analyze and provide a better diagnose in order to determine the best treatment for the patients. Connecting the sensor system through a wireless network to a cloud server will enable the doctor to monitor remotely. This paper presents fit-NES wearable bracelet, an alternative method for integrating a HR measurement device using optical based pulse sensor and Bluetooth-based communication module. This paper is also present the benchmarking of proposed system with several various commercial HR measurement devices.

Abstrak -Laju pertambahan jumlah penduduk yang membutuhkan layanan kesehatan di Indonesia tidak berbanding lurus dengan penambahan jumlah fasilitas kesehatan yang ada. Salah satu solusi alternatif yang dapat digunakan untuk mengatasi masalah tersebut adalah dengan mengembangkan teknologi Wireless Body Area Network (WBAN) sebagai alat bantu layanan kesehatan. WBAN adalah suatu sistem terpadu yang terdiri atas sekelompok modul sensor yang terdistribusi dan terhubung secara nirkabel pada suatu topologi jaringan tertentu dan berfungsi untuk mengekstrak dan berbagi informasi untuk diolah sesuai bidang aplikasinya. Salah satu aplikasi WBAN adalah untuk analisis gait atau metode untuk mempelajari pola berjalan manusia. Untuk melakukan proses analisis gait secara optimal dibutuhkan instrumen sensor inersia yang terpasang pada tubuh pasien yang merekam data gait dari pasien. Data dari pasien lalu dikirimkan melalui protokol komunikasi nirkabel ZigBee ke network coordinator yang berfungsi sebagai pengumpul data. Jaringan memiliki topologi dalam bentuk star dengan data rate dari sensor sebesar 50 Hz. Data dari network coordinator kemudian dibaca pada PC yang telah dilengkapi perangkat lunak pengolah data untuk diolah lebih lanjut. Sistem diuji pada ruangan koridor sejauh 4 meter dengan nilai RSSI atau kuat sinyal bernilai paling kecil sebesar -64 dBm. Dalam hal konsumsi daya, sensor node dapat digunakan secara berkelanjutan dalam jangka waktu 2 jam 25 menit.Kata kunci -WBAN, ZigBee, Sensor, Inersia, Network Coordinator, Node Abstract-The growth of people in Indonesia that demands medical services is not followed by sufficient medical service facilities. For alternative solution, the medical service can be improved significantly by developing Wireless Body Area Network (WBAN) as a medical service support tool. Wireless Body Area Network (WBAN) is an integrated system that utilized a series of sensor nodes and connected via wireless connection. WBAN is connected using specific network topology and have a function to extract and sent the information from sensor. Among the medical services, gait analysis, a method to analyze human walking pattern, is an important application. Gait analysis is a method to study human motion especially their ability to walk. To do the gait analysis, sensors are used on patient to record gait data. Furthermore, the data are sent using ZigBee protocol via network coordinator as a data collector. Sensor's data are transmitted using ZigBee protocol to network coordinator. The network has a star topology with data rate of 50 Hz. The data are sent by network coordinator to the PC to be processed by software. The system is evaluated in the room corridor with 4 meters long and give a signal strength test result about RSSI -64 dBm minimum. In terms of power consumption, sensor nodes can be used continously for about 2 hours 25 minutes.

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