Development and Validation of a Track Bicycle Instrument for Torque Measurement Using the Zigbee Wireless Sensor Network

Abstract

Abstract-This study evaluates the consistency between the bicycle torque of the proposed system, and a Schoberer Rad Messtechnik (SRM) system. The torque was measured while a trainer was cycling indoors, and the measured values were compared with those of the SRM system. A Bland-Altman statistical analysis indicated that the measured values agreed with the SRM within 95%. The mean absolute percentage error and root mean square error between the measurements of the proposed system and the SRM system were 8.25%, and 1.86, respectively. The results show that the bicycle torque can be measured accurately and transmitted using ZigBee wireless protocol.

Application of remote monitoring and management of high-speed rail transportation based on ZigBee sensor network

“…Therefore, the bottleneck of the life cycle of wireless sensor networks lies in relay nodes. According to the model of energy consumption, the energy consumed by the i relay node before the sensing node s n is shown in formula (3).…”

“…In recent 10 years, China's high-speed railway network has made remarkable achievements, and the scale of the road network has been expanding. By the end of 2015, the national railway business mileage reached 121,000 km, of which the speed railway was 19,000 km, accounting for more than 60% of the total mileage of the world high-speed railway (Gharghan S K et al 2017) [3]. According to the newly revised Medium and long term railway network plan, by 2020, the scale of the railway network will reach 150,000 km, including 30,000 km of high-speed railway, and it will cover more than 80% of the large cities.…”

Path-loss modelling for WSN deployment in indoor and outdoor environments for medical applications

“…WSN evolved of many wireless nodes deployed in a large area which have the capability to sense diverse events depended on the type of application. There are large applications that can be used for WSN: e.g., monitoring [1] and healthcare [2], sport [3], agriculture [4], disasters, etc.. Several wireless technology are used in WSN such as Bluetooth, WiFi, and ZigBee. ZigBee wireless protocol is commonly use of in WSN because of its advantages [5,6] which represented by low power consumption, inexpensive, sleep mode algorithm acceptation for saving energy, and easily to deploy with suitable battery life.…”

“…2) The physical parameters (i.e., the path loss exponent and standard deviation) for both indoor and outdoor surrounding are measured which reflect the quality of transmission channel. 3) Derived a path loss model for indoor and outdoor environment based on real measurements.…”

A ST X-NUCLEO-BASED TELEMETRY UNIT FOR DETECTION AND WiFi TRANSMISSION OF COMPETITION CAR SENSORS DATA: FIRMWARE DEVELOPMENT, SENSORS TESTING AND REAL-TIME DATA ANALYSIS

“…Figure27is related to the test phase carried out for proper functioning verification of the LM35 temperature sensors; LM35 sensor is connected directly to the PC4 analog input pin of ST Nucleo board and this last, through an USB cable, to PC for data exchange and viewing[35][36][37]. The detected temperature value, resulting from the A/D conversion and subsequent formula application, as reported in the firmware paragraph, was 25-26°C; the same voltage values provided by LM35 sensor were acquired and visualized by using the Tektronix 2024B oscilloscope (a voltage value of 263mV corresponds to a temperature of  26°C), so verifying the proper operation of the LM35 sensor and related data acquisition and processing phases.…”