1-Wire

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1-Wire

A half-duplex serial bus from Maxim Integrated Products, Sunnyvale, CA (www.maximintegrated.com). It was originally developed by Dallas Semiconductor, which was acquired by Maxim in 2001. Using one line for data and power, plus ground, 1-Wire is widely used to transfer identification and calibration data from products such as battery packs, printer cartridges, medical sensors, printed circuit boards and cellphone accessories. Transmitting at 16 or 142 Kbps, each 1-Wire device has a unique serial number.

iButtons Use 1-Wire
1-Wire is used to transfer data from Maxim's iButton chips, which are portable tokens used for building access, asset management and other tracking and monitoring applications (see iButton).
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References in periodicals archive ?
Because of the 1-wire bus digital transmission, cable wiring work of the sensor node becomes more flexible [12].
In addition, because AM2301 acts as a typical representative of the device based on 1-wire bus communication pattern, another technical property of AM2301 minimizes its impact on the working system.
All environmental sensors together with the LCD work as input, and they are connected to STM32 via different protocols such as SPI, 1-wire bus, and UART.
Hu, "The application of 1-wire bus technology in the temperature monitoring on the of rolling mill," in 2009 International Conference on E-Learning, E-Business, Enterprise Information Systems, and E-Government, pp.
DS18B20 uses the 1-Wire bus protocol, that is, to achieve two-way serial transmission of data on a data line, so the hardware interface circuit is very simple.
One more specific objective is the use of sensors which will use "1-wire bus" in order to make the wiring of the intelligent garment as minimal as possible.
The communication with the microprocessor is allowed via a 1-wire bus through which the sensor itself is supplied.
There is a large set of identifier nodes and different types of memory chips for the 1-wire bus. Only the temperature sensor DS18B20 [6] is available from the set of physical quantity sensors.
The 1-wire bus master is controlled by a host computer using the uBUS [7-9] communication protocol based on the MODBUS protocol.
There are very few relevant publications regarding the problem of creating a slave module of 1-wire bus. In the practical application of the slave module, there are several publications where authors used FPGA technology.
Reference [6] is a description of a specific 1-wire bus slave-DS18B20 digital thermometer including timing, method of communication, supported functions, and their usage.
In digital sensors having a 1-wire protocol, data are transferred serially using a single data line with a ground reference that can be used to connect one or more slave devices to the 1-wire bus. The 1-wire master device communicates with a slave device using a hard-coded 64-bit identification number and utilizes a self-timer driven by an internal oscillator that is synchronized with the falling edge of the master [25].