Sensors & Transducers Journal
(ISSN 1726- 5479)
Vol. 81, Issue 7, July 2007, pp. 1315-1321
Simple and Low-Cost Wireless Distributed Measurement System
Department of Electronics for Automation
University of Brescia, Via Branze 38, 25123 Brescia - Italy
Tel.: +39 030 3715445, fax: +39 030 380014
Received: 24 May 2007 /Accepted: 16 July 2007 /Published: 23 July 2007
Abstract: This paper describes the design and realization of a simple and low-cost system for distributed measurements. Traditional handheld digital multimeters have been equipped with a radio-frequency interface in order to implement what the authors call WDMM, the basic block of a wireless multi-probe data logger. New functionalities require very few components and result in a cost increase of less than 10$. In addition, also maintenance has been facilitated since tracking data such as working state or last calibration time are available to the user.
Data inquiry can be performed by a purposely designed module that has the same hardware of the WDMM but a different user interface or by a PDA (Personal Digital Assistant) or a traditional personal computer thanks to a USB connection. Simple supervisory software has been realized under the LabVIEW graphical programming environment.
Keywords: Low power design, Wireless sensor network, Smart instruments, Portable instrumentation
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