1-Wire Barometer
The 1-Wire Barometer is designed to measure atmospheric pressure and transmit this data over a 1-Wire network, which is commonly used for sensor applications due to its simplicity and low wiring requirements. The circuit typically includes a pressure sensor, a microcontroller, and the necessary interfacing components to ensure compatibility with the 1-Wire protocol.
The pressure sensor, often a piezoresistive or capacitive type, converts the atmospheric pressure into a proportional electrical signal. This signal is then processed by a microcontroller, which performs analog-to-digital conversion to obtain a digital representation of the pressure reading. The microcontroller also manages the communication over the 1-Wire network, sending the pressure data to a central controller or display unit.
Construction details include the selection of appropriate components, such as the microcontroller (often from the Microchip or Atmel families), and the pressure sensor, which should be chosen based on the desired pressure range and accuracy. The circuit design must ensure proper power supply decoupling and include pull-up resistors on the 1-Wire bus to maintain signal integrity.
Calibration of the barometer is essential for accurate readings. This process involves comparing the sensor output against known pressure standards and adjusting the software algorithms in the microcontroller to compensate for any deviations. Calibration may also involve temperature compensation, as temperature variations can affect sensor readings.
This 1-Wire Barometer can be integrated into larger environmental monitoring systems, allowing for remote data collection and analysis, making it suitable for applications in meteorology, agriculture, and HVAC systems.Construction of a 1-Wire Barometer. This page shows the circuit, and gives construction and calibration details. This barometer connects to a Dallas Semiconductor 1-Wire network. 🔗 External reference
Related Circuits
While it may lack the aesthetic appeal of traditional mercury barometers featuring elongated glass tubes mounted on intricately carved wooden bases, the Torricelli barometer described here serves as a functional equivalent and electronic replica of the original Torricelli barometer....
The designer requires a 1-Wire host computer IO framework that operates at 1.8V. Most 1-Wire devices are unable to function at this voltage. This application recommends implementing a 1.8V 1-Wire host computer alongside a 5V 1-Wire reference design for...
The resolution of the barometric pressure is approximately 0.00417 inHg (0.0139 kPa) within a pressure range of 31.0 to 28.0 inHg (105.0 to 95.0 kPa, or 1050 to 950 mb or hPa). Higher resolutions can be achieved with a...
Although it may lack the aesthetic appeal of traditional mercury barometers, which feature long glass tubes mounted on intricately carved and polished wood, the Torricelli barometer being discussed serves as a functional equivalent and electronic replica of the classic...
Schematic and operation of a microcontroller-based driver circuit for large 1-Wire networks; includes software flowcharts and scope traces. The schematic details a microcontroller-driven circuit designed to manage extensive 1-Wire networks, which are commonly used for communication and control in various...
Although it does not have the same charm as real mercury barometers with long glass tubes on pieces of carved and polished wood, the Torricelli barometer. The Torricelli barometer, named after the Italian scientist Evangelista Torricelli, is an instrument used...
Warning: include(partials/cookie-banner.php): Failed to open stream: Permission denied in /var/www/html/nextgr/view-circuit.php on line 713
Warning: include(): Failed opening 'partials/cookie-banner.php' for inclusion (include_path='.:/usr/share/php') in /var/www/html/nextgr/view-circuit.php on line 713