Intelligent Network Temperature and Humidity Measuring System Based on USB Interface

The main purpose of this paper is to show how to build a simple temperature monitoring system by using multiple TMP75 digital sensors with 2-wire (I 2 C-compatible) serial interface and the PC's parallel port. The proposed system has a master-slave architecture and consists of an LPT-to-I 2 C adapter for the parallel port, which operates as single master, up to 8 slave modules (measurements nodes) based on the TMP75 digital sensor IC and LabVIEW application software. Such a system can be deployed across a building, laboratory or any other facility, for current environmental monitoring, or it may serve as an educational tool for students.

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Temperature monitoring system based on multiple TMP75 digital sensors and the PC's parallel port

Lunca

Ursache

Vasniuc³

2015

2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)

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Temperature and Humidity Memory Instrument And Its Data Processing System

Chi¹

2015

Proceedings of the International Conference on Computer Information Systems and Industrial Applications

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Abstract-The instrument uses a single chip relative humidity and temperature multi sensor SHT11 module comprising a calibrated digital output, which can measure temperature and relative humidity of environment at any moment, timely and real time. It displays temperature-humidity value, dew point value, date and time at the same time by lattice graphics Liquid Crystal Display Module (LCM) HGO12864. Temperature-humidity value and relevant time are saved in nonvolatile Ferroelectric Random Access Memory (FRAM) FM31256, which can assure data do not lose after power of system fail. Real-time data or data in FM31256 can be upload PC by USB interface, and then is protracted temperature-humidity history curve or real-time curve by internet applications. It can not only calculate maximum, minimum, average and variance among random measuring period of time but also make further statistics and analysis, report forms printing, and setup basic measure parameters of instrument. Its power supply is 3.6V Li-battery or 220V Alternating Current(AC). It is low power-consuming, high precision, plug and play and better universal performance.

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Intelligent Network Temperature and Humidity Measuring System Based on USB Interface

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Temperature monitoring system based on multiple TMP75 digital sensors and the PC's parallel port

Temperature monitoring system based on multiple TMP75 digital sensors and the PC's parallel port

Temperature and Humidity Memory Instrument And Its Data Processing System

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