Posts Tagged ‘telemetry system’

1-Wire HVAC monitoring system

Sunday, August 2nd, 2009

1-wire-hvac-control.jpg

The 1-Wire HVAC monitoring system is for residential Geothermal HVAC systems. This project utilizes the so called 1-wire temperature sensor. A single board computer handles the brunt of the work including web accessible trend data. With access to the underling temperatures, the over all system performance may be gauged. Earlier this year we covered a HVAC web enabled monitor that adds an element of control. As the industry adopts modern control architectures, we hope to see more HVAC hacks around.

read more: Hack a Day

WAP controlled home automation

Friday, December 26th, 2008

[Josh] sent in a home automation project he did a little while ago. It has a total of eight switched outlets. The main focus of the project was WAP access for remote control from any cellphone. The control box is based on a design by [Ashley Roll] for controlling eight servos using a PIC microcontroller. A listener app written in Java monitors the control web page and sends signals to the board via serial port. He used opto-isolated 240V solid state relays for each of the outlets. All the pieces are available on the site and he might even do a custom control board design if there is enough interest.

Source: Hackaday

DataNet Wireless Data Acquisition System

Friday, December 26th, 2008




The DataNet is a professional wireless data acquisition system using the Zigbee wireless protocol. Consisting of a USB base station, DataNet acquisition units, repeater units and the DataNet PC Suite logging software. The acquisition units have 4 inputs for direct measurement of PT-100, thermocouple, voltage 4-20mA, frequency and pulse. There is also a version with the addition of built-in temperature and humidity sensors.

Source: Audon Electronics

Yokogawa releases advanced data recorder

Sunday, November 9th, 2008

Yokogawa Electric has released the DXadvanced R3 data acquisition and display station for networks.

The product is an enhanced version of the Daqstation series of paperless recorders designed for more efficient monitoring of production lines.

The DXadvanced has a built-in panel and offers integrated display, recording and communication functions.

(more…)

ABB innovation increases breaker performance in power plants

Friday, August 8th, 2008




An ABB innovation has increased the performance of generator circuit breakers by more than 25 percent while simultaneously reducing the footprint, weight, noise levels and maintenance requirements of these critical power plant components.

The innovation has enabled ABB to increase the nominal current of its HECS family of generator circuit breakers (GCBs) from 18,000 amps (A) to 23,000 A, an increase of almost 28 percent.

Previously GCBs of this rating required a so-called ‘forced’ cooling system of pumps, fans or motors to counteract heat dissipation and keep sensitive breaker components within their rated temperature tolerances.

About 70 percent of the world’s GCBs are engineered and manufactured by ABB, which is launching three new GCBs with heat pipe cooling in 2008

ABB has eliminated the need for these cooling devices by developing an innovative heat pipe cooling system that makes the HECS range lighter, slimmer and quieter than was previously possible.

In addition to offering a substantial increase in nominal current capability, the maintenance requirements of the new GCBs are – as with all HECS breakers – extremely low.

Nominal and short-circuit currents generate a tremendous amount of heat. The higher the nominal current, the more heat is generated. A cooling system – either natural or forced – is therefore required to keep the breaker within its temperature limit.

ABB’s HECS breakers are quieter, smaller and lighter thanks to an innovative approach based on a heat pipe cooling concept.

A forced cooling system is itself a generator of heat, which in turn limits the nominal current capability of the GCB to 18,000 A, as well as creating extra weight and a larger footprint.

Natural cooling has its own engineering challenges and only becomes feasible for nominal currents above 13,000 A by increasing the dimensions, weight and footprint of the breaker components.

The success of the ABB heat pipe solution is to solve the limitations of the two existing technologies. It requires no electricity to operate and is virtually maintenance-free and silent.

Generator circuit breakers are a critical component in power plants, protecting both the generator and the power transformer. ABB has the broadest GCB portfolio on the market, covering power ratings of more than 1500 MVA and nominal currents in excess of 50,000 A.

Source: ABB

Thai rice project explores RFID

Wednesday, July 9th, 2008

Paddy_Plant.jpgThailand’s Hom Mali project is testing the use of RFID applications in its rice production supply chain. The Software Industry Promotion Agency (SIPA) has created a prototype system which tracks the flow of rice in the Roi-Kaen Sarn cluster area of the country.

The system tracks the flow of rice from the Khon Kaen Bank of Agricultural Cooperatives, where the rice is grown, to the cooperatives’ community mill. Rice trucks will be tagged at the time of loading and then scanned when it reaches the mill, to confirm the receipt of the rice and its point of origin. The tags will include additional information such as weight loads and truck numbers. For the pilot project, 500 tags will be used.

SIPA representatives hope the pilot project, which is expected to conclude in September, will develop into a system that enables local farmers to better compete in the global market. In an effort to further boost the regional economy, the project also encourages local software companies to adopt domestic supply-chain management software instead of importing it from abroad.

The system’s prototype will also be tested on other local agricultural products such as tapioca.

Source: RFID News