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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The company places i-button technology along a prearranged inspection route, and as an assigned store associate walks the route checking for floor hazards, he checks in at the i-button stations to record his progress.
Made in the United States, the security cabinets and lockers include a Management Override I-Button digital keypad and backup battery pack.
The pod also logs the data with a time/date stamp onto an on-board Dallas I-Button device.
A handheld computer connected to the electronics displays the serial number of the transmitter's I-Button and the tensile load data.
There are no keys - the door is opened by holding an i-button against an i-reader.
The modularized design includes; 2nd screen, MSR, sound speakers, 3-in-1, MSR/ Smart card/ i-Button Reader, VFD customer display, WiFi and RFID all of which can be easily integrated.
The IVC-X1 provides 4 digital inputs, 4 digital outputs and two connections for I-Button or other scanning devices.
When the driver gets into the vehicle, pushing the i-button of the Tele Aid system downloads the destination directly to the vehicle's navigation system and prompts the driver as to whether to start route guidance immediately or save the information for later use.