Abstract
This research discusses how to build and analyze a 915 MHz Long Range (LoRa) E32 Frequency-based Node Sensor network with a Micro Sensor with 3 sensor outputs produced i.e, Temperature (DegC), Air Pressure (hPa), and Humidity (%). therefore, This research succeeded in making a sensor node using the LoRa E32 915 MHz using a mini type ATmega 328p microcontroller with a 3.7 volt, 1000 mAh battery. The display on the receiver uses an 8X2 LCD which will output 3 sensor data outputs. furthermore, the result and analysis of this research are how to analysis of the LoRa Chirp Signal, furthermore, LoRa Chirp Signal obtained from the Textronix Spectrum analyzer in realtime, Quality of Service (QoS), Receive Signal Strength Indicator (RSSI) (-dBm), uplink and downlink data on the Internet Server. Furthermore, The Micro Sensor Graph Output will be displayed on the application server with a sensor data graph. In this research Application Server used is Thingspeak from Mathworks.
Highlights
The development of the Internet of Thing is currently growing rapidly, Sensor Nodes are developed with very low power consumption with long node durability, supported by the right environment and the right battery usage, in research [1] and [2], sensor nodes are used in delivery of Internet-based Pulse Sensors and Blood Pressure sensors with Internet of Things (IoT) devices with ZigBee sending devices
Long Range (LoRa) parameters are obtained with a detailed mathematical approach that results in the Probability of Success (Ps) with parameters e.g., PSNR, PSIR, and Simulation with a Comparison of distances. the research compared the value of R = 6 km and R = 12 km
Compressed High-Intensity Radar Pulse is signal modulation technique has long been used in the world of commercial and Military RADAR Systems. There are 3 types of signal modulation, e.g. Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK) and Phase Shift Keying (PSK). Amplitude Shift Keying (ASK) is a modulation signal based on the change in the value of the amplitude is high or the low wave signal is generated, if the amplitude of high-value and low-amplitude digital 1 digital is worth 0
Summary
The development of the Internet of Thing is currently growing rapidly, Sensor Nodes are developed with very low power consumption with long node durability, supported by the right environment and the right battery usage, in research [1] and [2], sensor nodes are used in delivery of Internet-based Pulse Sensors and Blood Pressure sensors with IoT devices with ZigBee sending devices. The advantages of ZigBee are Low Power, with a data rate of 250 kbps, but weak in the distance (m), a maximum of 120 meters on a regular type ZigBee, and 1 km on a ZigBee Pro. So the development is done by changing the radio frequency device with Long Range (LoRa). Still, on the application of Radio Frequency, namely in research [6], LoRa is used in Street Light monitoring. This comparison uses two parameters, i.e, the ratio of Power Consumption to distance. LoRaWAN is the most ideal device that can be used as a sensor node based on Low Power and with the best data transmission range. In research [8] very detailed in testing the reliability of LoRa signal and LoRa transmission data (bit rate, data rate), Receive Signal Strength Indicator (RSSI), Error Bit Rate (EBR (%)) and EPR (Error Packet Rate (%) ), Packet Delivery Ratio (PDR(%) juga dilakukan menggunakan perbandingan simulasi menggunakan LoRaSIM [9]
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