September 20, 2020


Technical support

Types Of Electrical Transformers

To meet environmental-friendly requirements, Building Energy Management Systems (BEMS) is required for energy consumption monitoring...

To meet environmental-friendly requirements, Building Energy Management Systems (BEMS) is required for energy consumption monitoring and management. Overly restrictive DRM is a challenging issue for libraries because it narrows users‘ rights to access and manipulate legally acquired content. Libraries sometimes agree to pay-per-use licensing models or accept end-user licensing agreements, so that they can distribute content to mobile users. DRMs can prevent preservation, archiving, and other exceptions allowed in copyright law. They prescribe and control how users can access and use digital content by overriding copyright exceptions and creating technological barriers where no legal barriers exist. The ability of sensory-disabled persons to benefit from digital media is therefore being undermined by DRMs (Nicholson, 2006). An Oklahoma Senate bill that prohibits “the manufacture or sale of food or products which use aborted human fetuses” has some folks scratching their heads, and wondering if it’s real. Temperature is one of the most commonly measured environmental quantities for different reasons. There are different types of temperature sensors that can measure temperature, such as a thermocouple, thermistors, semiconductor temperature sensors, resistance temperature detectors (RTDs), and so on. Based on the requirement, different types of sensors are used for measuring temperature in different applications. Table 1-3 (Göpel et al., 1989), contains the most common transduction principles, excluding biological and nuclear effects, and illustrative physical phenomena. The table demonstrates some interesting complexities in definitions. For example, a device that converts electrical energy into mechanical energy, such as by piezoelectricity (which may be considered a sensor by definition), is more generally termed an output transducer or an actuator rather than a sensor. Clearly then, the appropriate use of “sensor” or “actuator” is not based on physics but instead on the intent of the application. 3 Classifying the signal domains in the manner shown in Table 1-3 , while not precise, demonstrates that understanding the physics of the application is vital to selecting the appropriate sensor scheme, materials, and design. It is one method of visualizing the transduction principles involved in sensing. The lighting system could be improved to achieve higher energy efficiency through the use of more LED lighting throughout the entire building. LED’s have an expected lifespan of around 50000 hours, about six times that of fluorescent lights and consume half the wattage per unit of light produced. LED lights would also be beneficial because they lose less energy to heat and they emit no UV radiation. Unlike the current fluorescent lights of the office space, LEDs turn on instantly without requiring a warm-up period and do not contain environmental hazards such as mercury.