Design and Prototyping of Temperature Monitoring System for Hydraulic Cylinder in Heavy Equipment using ESP32 with data logging and WiFi Connectivity

Abstract

Measurement and data-logging of temperature are important in industrial application. This paper discusses the implementation of monitoring temperature of cylinder hydraulic of a heavy equipment such as excavator in the field. For monitoring the temperatures, DS18b20 sensors are used to sense the hydraulic arms in the excavator. Due to sensing moving parts such as hydraulic arms, a WiFi technology is used to transmit temperature’s data to a browser. The ESP-NOW technology from Espressif ESP32 is chosen to minimize the electrical energy drained from the Lipo’s battery. Data-logging is done in a browser environment, by using javascript, websockets, css, and html technologies. The result shows that the usage of ESP32 in monitoring the temperatures, can be used in the real-time mode for the monitoring of excavator operations. And the 20000mAh battery-based system can last for approximately a month by using ESP-NOW technology from the Espressif.

A low-cost wireless extension for object detection and data logging for educational robotics using the ESP-NOW protocol

“…The ESP32 ( Espressif Systems, 2022 ) supports a proprietary communication protocol called ESP-NOW that utilizes the 2.4 GHz band and is optimized to send short messages of up to 250 bytes to other ESP32 nodes with very little overhead, a quick response time on the order of one millisecond, low power usage, and a range between nodes of over 200 m ( Yukhimets, Sych & Sakhnenko, 2020 ). These characteristics make the ESP32 ideal for reading data from and sending instructions to real time control systems and data logging ( Linggarjati, 2022 ). The onboard ESP32 does not require a separate battery and can be powered by the output voltage on any of the VEX robot three-wire ports which support an output of 5 volts at a maximum of 2 amps.…”

Advancing Urban Microclimate Monitoring: The Development of an Environmental Data Measurement Station Using a Low-Tech Approach

“…Linggarjati used ESP-NOW protocol to obtain the temperature from a thermometer with another ESP32, which commanded a hydraulic system. [68] The general diagram representing the sensors and the electronic parts is presented in Figure 4. An ADS1015 (Analog to Digital Converter (ADC)) was added to this chip to improve the analog measurements.…”