Signal conditioning for one

摘要

In a conventional temperature measurement system, a signal conditioner often sees use to filter, linearize, and amplify corrupted, weak analog sensor signals. The computer then digitizes and processes the signal conditioner output for monitoring or control applications. Because of the weak sensor signal, sensors must connect in the proximity of the signal conditioner. A multipoint measurement environment requires an excessive number of wires. In the past few years, a semiconductor integrated circuit (IC) sensor has come on the scene, featuring not only on-board signal conditioners, a 12-bit digitizer, and unique address identifier, but also a One-Wire net interface. One-Wire is a device communications bus system that provides low-speed data, signaling, and power over a single signal, albeit using two wires, one for ground, one for power and data. The user, through a properly designed controller, can easily interface to One-Wire network channels. If you must monitor multiple points along the network line, you could arrange a network of One-Wire compatible sensors in a multi-drop network connection.