Tuesday, November 9, 2010

Envirionment testing tools

This testing will help the manufacturer to accelerate the aging process of the product to predict its lifecycle, analyse the modes of failure and filtering out those products that are not fit to be shipped out to the customers. In order for the testing to be carried out, equipments are needed to perform this test. One has to analyse and calculate whether itis worthwhile to invest in the equipments or to just perform the reliability tests in test houses. Many of these test houses are able to offer consultancy services as to the standards and test methods that will be used with regards tothe electronic products that will be tested. The reliability testing is one of the secret that makes a world of difference between a good product to another.Most design engineers will design a good product that works well during the initial stages of development and testing. However, how do you ensure that when the product goes into mass production, most of them are still in good working condition after using them for a long period of time? In other words, how do you ensure the quality and reliability of this product when it is operated for an extended period of time under varying environmental conditions. Environmental testing is the answer to this question. This testing will help the manufacturer to accelerate the aging process of the product to predict its lifecycle, analyze the modes of failure and filtering out those products that are not fit to be shipped out to the customers. In order for the testing to be carried out, equipments are needed to perform this test. One has to analyse and calculate whether itis worthwhile to invest in the equipments or to just perform the reliability tests in test houses. Many of these tes thouses are able to offer consultancy services as to the standards and test methods that will be used with regards tothe electronic products that will be tested. The reliability testing is one of the secret that makes a world of difference between a good product to another.Some of the basic equipments that are needed for the environmental testings are temperature and humidity chambers, thermal shock chambers, vibration machines and salt-fog chambers. Other more specialised equipments are needed depending on the types of products that will be tested.Ever since I was a student years ago, I was always fascinated by the world of wireless and wondered how they worked. The projects below will provide a good understanding and information of the world of remote controls. The projects includes schematic diagrams and parts list to enable one to construct and experiment with the concept of infrared, ultrasonic and FM transmitters. This door monitor project uses an infrared beam to monitor door & passageways or any other area. When the beam is broken a relay is tripped which can be used to sound a bell or alarm. Suitable for detecting customers entering a shop, cars coming up a driveway, etc.This project is based on integrated circuit from Holtek Semiconductor HT6221/HT6222. These ICs are commonly used in television and VCR infra red remote controls, garage door controllers, car door controllers, security systems and other remote control applications.

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