The DS18B20 sensor communicates using the “1-Dây điện” protocol, which means it uses a single data line for all communication with a microcontroller, allowing multiple sensors to be connected on the same line and identified by their unique 64-bit serial code; this single data line is pulled high with a resistor and the sensor transmits data by pulling the line low during specific time slots to send bits of information.
This article explains in detail the application of custom DS18B20 digital temperature sensor in building a digital thermometer. Including working principle, hardware connection, software programming and simulation implementation. Provide complete protues simulation diagram, C source code and result analysis to help readers deeply understand and practice the use of DS18B20.
Comparison between PT100 temperature sensor probe and DS18B20 module
1) Basic principle of signal acquisition
① The resistance of PT100 changes proportionally with the temperature (the higher the temperature, the greater the resistance), but the resistance change is very small, about 0.385 Ω / degree;
In modern sensing technology applications, (NTC, PTC, PT100, thermocouple, thermal resistor, DS18B20, vân vân. cáp, probe kit) temperature sensors are key measuring tools. They are widely used in industrial automation, agricultural monitoring, automobile manufacturing and other fields. In order to ensure that the temperature sensor can work stably and reliably in a humid or wet environment, waterproof and moisture-proof technology
25952893 for GM Chevrolet GMC temperature sensor 15-51264 1551264;
27722-AL500 for Nissan outdoor temperature sensor ambient temperature 27722-3VA0A;
27723-4BU0A for Nissan Qashqai temperature sensor 277234BU0A;
27675-1KM1A for Nissan air conditioning temperature sensor thermostat 27675-1FC1A 92200-1FA;
1347010 20927970 for Volvo truck/bus/engineering machinery air temperature sensor;
Installed in the charging pile/charging gun of new energy vehicles, used for charging temperature control of new energy vehicles
Fast response speed
Various installation structures available
Strong moisture resistance and high stability
This sealed digital temperature probe lets you precisely measure temperatures in wet environments with a simple 1-Wire interface. Waterproof DS18B20 Digital temperature sensor + Resistor · Usable temperature range: -55 to 125°C (-67°F to +257°F) · 9 ĐẾN 12 bit selectable resolution.
Temperature sensors are used in a wide range of fields including: industrial manufacturing, automotive applications, medical devices, HVAC systems, food processing, environmental monitoring, research and development, consumer electronics, and building infrastructure monitoring; essentially anywhere precise temperature control or monitoring is needed to ensure safety, efficiency, and optimal performance.
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