COD Available. For General Enquiries E-mail support madrasshoppe. Description Product Details Overview of Construction Management Fundamentals Book Construction Management Fundamentals is intended as an introduction to both technical and businesssides of construction, and is intended for use in an undergraduate Civil Engineering curriculum or forgraduate courses in Construction Management. Table of Contents,Index,Syllabus,summary and image of Construction Management Fundamentals book may be of a different edition or of the same title.
This collection contains digital versions of United States Government documents as well as other government documents. DTIC's Suite of Services is available to DoD personnel, defense contractors, federal government personnel and contractors and selected academic institutions.
The general public can access unclassified, unlimited information, including many full-text downloadable documents, through the public Web site, DTIC Online. DTIC's collections Department of Education.
ERIC provides access to bibliographic records of journal and non-journal literature from to the present. ERIC's mission is to provide a comprehensive, easy-to-use, searchable Internet-based bibliographic The UK Medical Heritage Library brings together books and pamphlets from 10 research libraries in the UK, focused on the 19th and early 20th century history of medicine and related disciplines.
UK Medical Heritage Library partners Founded in by Alexander Cameron Rutherford, the first premier of Alberta and Henry Marshall Tory, its first president, it is widely recognized as one of the best universities in Canada. The main campus covers 50 city blocks with over 90 buildings directly across the North Saskatchewan River from downtown Edmonton. The University of Alberta library system received a tremendous boost with Books from the Boston Library Consortium. Books from the Allen County Public Library.
Soundex Index for the Census. Books contributed by Getty Research Institute. The Research Library at the Getty Research Institute focuses on the history of art, architecture, and archaeology with relevant materials in the humanities and social sciences. The range of the collections begins with prehistory and extends to contemporary art.
Project Gutenberg began in by Michael Hart as a community project to make plain text versions of books available freely to all. All the Dutch government documents can be found in this collection. The collection contains the Dutch "Tractatenbladen", "Staatsbladen" and many more official Dutch publications.
With the re-branding of computing power and machines as something welcome in the home and not just the workshop, a number of factors moved forth to sell these machines and their software to a growing and large group of customers. Besides the introduction of more elegant cases and an increased presence by larger and larger firms, a strong argument can be made that one of the forces was the proliferation of computer-related magazines and newsletters that gave a central, printed home for writing The Wellcome Library is one of the greatest specialist collections on the history of medicine and the medical humanities.
It houses over 2. The Library is making as many of its collections as possible freely available online. In addition to this selection of historical books and journals, increasing amounts of digitised material, including manuscripts and Books contributed by the Boston Public Library.
In , French ventriloquist M. Nicholas Marie Alexandre Vattemare became the original advocate for a public library in Boston when he proposed the idea of a book and prints exchange between American and French libraries.
As a member of the Open Content Alliance, the library of the University of Illinois is contributing digital content to the Internet Archive in several areas: Illinois history, culture and natural resources; U. The Illinois Library is also a contributing member of the Biodiversity Heritage Since the University of Ottawa has been Canada's university.
Located in the heart of the nation's capital, the University has emerged as a vibrant "centre of learning", with a total population including students, teaching and support staff - of 40, The largest bilingual university in North America, the University is a major player in the cultural and economic development of the National Capital Region.
Smack Jeeves was a website where creators could upload and share their original webcomics. Topics: comics, webcomics. This collection contains global Edicts of Government , such as building, fire, electrical, and plumbing codes.
The documents contain the legislative or executive declaration and the model codes that are thereby incorporated by reference. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, these legal document are hereby made available on a noncommercial basis, as it is the right of all humans Topic: public.
Collections from Massachusetts libraries, archives, museums, historical societies, schools, and other cultural heritage institutions digitized in partnership with Digital Commonwealth and the Library for the Commonwealth program of the Boston Public Library. This is an experimental collection of music that is not yet available for public release.
Topics: cd, compact disc. Other subject areas such as early North Carolina medical journals and North Carolina judicial materials are also represented. The United States Department of State DOS , often referred to as the State Department, is the United States federal executive department responsible for the international relations of the United States, equivalent to the foreign ministry of other countries.
The Department was created in and was the first executive department established. The Executive Branch and the U. Congress have constitutional responsibilities for U. The Department advances U. State Department. The donation of books to the Internet Archive for digitization has allowed Trent University students and faculty to continue to have access to resources once held at the Bata Library and at the same time Materials for this collection provided by: University of Victoria Libraries.
A collection of audio files referenced by Truyen Audio. This collection contains a library of works uploaded by Arvind Gupta, Toymaker.
This library has been A collection of publications dating back to the early 17th century that are about Canada, or written and published by Canadians, scanned from microfiche. It is a collection of publications dating back to the early 17th century that are about Canada, or written and published by Canadians. The box and packaging art is as important as any other part of the software that has been sold over the years; in earlier years of the computer industry, it had to serve as the entire pitch.
These are attempts by many groups and individuals to capture that unique artwork, even as the software itself lives on. Created on. Jeff Kaplan Archivist. AnnaN Member. Diana Hamilton Member. ARossi Archivist. As well, the act of cooking can cause a motion detector to remain in an on status. The distance measuring sensor element is not sensitive to the heat of the stove and detects a human presence within five feet in front of the stove and within a narrow angle directly in front of the distance sensor, which is placed on the stove control panel or on the wall behind the stove.
The distance-measuring sensor only detects a human presence when the human is standing directly in front of the stove. This narrow range and short distance from the stove prevents the device from being tricked by other non-cooking activity like a pet wandering through the kitchen after the cook has stop attending to the stove. Another important feature of this device is MCU count-up cooking timer with a digital display that will tell the cook how long the stove was on before the safety device shut off the stove, the elapsed cooking time.
This informs the cook how long the food had already cooked which aids in deciding how much cooking time is required to fully cook the food. This time information can also be interpreted as to the attention of lack or attention given to operating a kitchen stove. A primary object of the present invention is that it is designed to automatically cut power to the elements of a stove if the distance measuring sensor does not detect human presence directly in front of the stove within a fixed period of time such as seven 7 minutes.
This time period is pre-determined and programmed into the microcontroller at production time. It cannot be reset by the appliance operator. The device of the present invention has an override switch. The cooking appliance can be put into override by the appliance operator, evading the safety features of the present invention, at the beginning of a cooking session.
The override function will be cancelled automatically when the stove is shut off. The above brief description sets forth rather broadly important features of the present invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. Still further objects and advantages of the present invention will become apparent from a consideration of the ensuing descriptions and drawings. It is understood that the present invention is not limited to in its application to the details of the construction and to the arrangements of the components or elements set forth in the following description or illustrated in the drawings.
The present invention is capable of other embodiments and of being practiced and carried in out various ways. Also, it is to be understood, that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
Those skilled in the art will appreciate that the conception upon which disclosure is based may readily be utilized as a basis for designing other structures, methods, and systems for carrying out the several purposes of the present invention.
The claims herein should be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention. Other objects and features will become apparent from the following detailed description taken in combination with the accompanying drawings.
However, the drawings are provided for purpose of illustration only, and are not intended as a definition of the limits of the invention. Similar reference characters denote corresponding features consistently throughout the accompanying drawings.
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which the preferred embodiment of the invention is shown. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiment set forth herein.
Rather, the illustrative embodiment is provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like numbers refer to like elements throughout. As best shown in FIG. In an alternative embodiment, the sensor module could remotely and wirelessly interact with the control module via radio waves. A common cooking appliance in a household contains a plurality of heating elements , such as burners on a stove.
As further shown in FIG. As shown in FIG. Hot Line A and Hot Line B run from the power source to the power routing module within the control module The power routing module is the power routing means for routing electrical current thru a power line, Hot Line 1 to the power relay and the power supply , and from the power relay to the sensor module and the load current sensor , and ultimately to the cooking appliance ; and routes another power line, Hot Line 2 directly to the cooking appliance Setting the fixed time period is a common operation performed on solid state electronic devices on the market such as MCU , the microcontroller unit of the present invention.
The time periods are determined and programmed into the microcontroller unit at the time of manufacture of the device. The elements of the sensor module , depicted in FIGS. The MCU is a microprocessor commonly found in every household in any of numerous electrical devices such as cooking appliances, washing machines, and telephones. Commonly these integrated devices can be controlled by specialized instructions to the MCU , as in the preferred embodiment. In the preferred embodiment, the cooking indicator is a bi-color light emitting diode, commonly available on the market, such as the Lite-On brand LTLEHJ.
The cooking timer is the digital display controlled by the timing mechanism of the MCU This predetermined period of time is programmed into the MCU by the manufacturer during production of the cooking appliance The predetermined period of time is not manually set or manually adjusted.
A consumer, the cooking appliance operator , cannot adjust this period of time, and only can override the monitoring functions of the device by use of an override switch element to the present invention. Therefore, once the device of the present invention turns the cooking appliance off it cannot be inadvertently turned on, an important and novel safety feature of the present invention.
In the preferred embodiment, the MCU uses its own internal analog-to-digital converter ADC to monitor output from the distance sensor and other elements of the sensor module , said converter commonly found within MCUs on the market. In alternative embodiments, the MCU can use an on-board comparator or an external comparator to monitor output from the distance sensor As best shown in the plan views of FIGS. The threshold level, the sensor space depicted in FIG.
In an alternative embodiment, where a comparator is used either in the MCU or off chip , a potentiometer or resistor voltage divider, commonly found in comparators on the market, is used to set a threshold voltage at which an operator is determined to be within the acceptable range of the cooking appliance Components used in the sensor module circuit, depicted in FIG.
Additional elements discussed above within the sensor module are also depicted in FIG. The MCU directs the functioning of the control module in accordance with the readings from the load current sensor , the distance sensor , and the override switch , depicted in FIG.
As best shown by FIGS. The MCU is the element of the sensor module that responds to the output of the distance sensor to activate the power relay which automatically cuts the electrical power from the power source to the cooking appliance through a solid-state make of power relay controlling a power circuit to the cooking appliance , when the MCU determines through the distance sensor that the cooking appliance operator has not come within the sensor space In other words, the operator has not come near enough to check on the status of the cooking appliance , as determined by the infrared output of the distance sensor , connected to the MCU , within the predetermined period of time, set by the cooking appliance manufacturer.
Additionally, as shown by FIGS. When the override switch is depressed or activated by the cooking appliance operator , the MCU allows the cooking appliance to operate on its manual state as a normal appliance, with no automatic power shut-off, until the cooking appliance has been turned off manually by the operator depicted in FIGS.
The override switch is any type of momentary acting switch available in the market, mounted on the sensor module The MCU monitors the override switch by waiting for a voltage change, indicating that the override switch is activated. Each color of the cooking indicator is turned on, off, or toggled on and off, depending on the current state of the MCU The cooking timer element displays the elapsed time since the start of power-up of the cooking appliance ; for instance, of one or more of a stove's burners.
It will continue to register or count up time on its digital cooking timer , as depicted in FIG. If the MCU shuts the cooking appliance off because no operator came by to check on the appliance within the pre-determined time period , the elapsed time prior to automatic shut-off will remain displayed on the cooking timer until the cooking appliance is manually shut off. Several different digital display types and interfaces can be used in different embodiments of the present invention for the cooking timer , to display the elapsed cooking time of the cooking appliance In the preferred embodiment of the present invention, the MCU is chosen which has a built-in digital driver, a compatible display with at least four 4 digits, commonly available on the market, as depicted in FIG.
Another alternative embodiment uses an LCD character module, which takes four 4 or eight 8 data lines plus three 3 control lines. When smoke is detected by detector 1, however, switches 20 are automatically opened to the broken line positions shown in the drawings by interconnection of the smoke detector auxiliary output line 7 to the safety shutoff unit input control line 18 for powering the electromagnet 21 which results in opening the switches.
In the embodiment shown in FIG. Consequently, as soon as smoke is detected by the detector 1, power to the range is cut off and cannot be resumed without manually resetting the circuit breakers, even though the switches 20 of the shutoff unit 15 will close automatically when the smoke has cleared.
This prevents automatic resumption of the supply of power to the range which could restart the fire, such as if the range has been left unattended. Switch 22 can be mounted externally of the range at any convenient location. After the smoke has cleared, the relay switches remain in their open positions until the reset switch is opened manually, momentarily, whereupon the relay switches close to restore power to the range.
Since no modification is made to the internal wiring of the range, the safety shutoff in accordance with the present invention can be used with any known electric range. All rights reserved.
Login Sign up. Search Expert Search Quick Search. Kitchen range safety shutoff. United States Patent A smoke detector is mounted externally of but adjacent to an electric kitchen range and supplies an electrical signal when smoke is detected.
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