This invention relates generally to control systems used in connection with the production of mixtures, and particularly to control systems used in connection with the production of asphalt mixtures.
It is known to use control systems in connection with the production of asphalt. Conventional control systems used in connection with the production of asphalt, however, suffer from one or more limitations. For example, conventional control systems used in connection with the production of asphalt do not accurately and precisely control the amount of liquid asphalt cement contained in the asphalt mix. More particularly, conventional control systems used in connection with the production of asphalt do not collect data relating to the amount of recycled liquid asphalt cement contained in the amount of recycled asphalt pavement (RAP) substantially continuously and substantially in real time. Conventional control systems used in connection with the production of asphalt do not collect data relating to the amount of moisture contained in the amount of recycled asphalt pavement substantially continuously and substantially in real time. Conventional control systems used in connection with the production of asphalt do not collect data relating to the amount of moisture contained in the amount of aggregate material substantially continuously and substantially in real time. Conventional control systems used in connection with the production of asphalt do not collect data relating to the amount of liquid asphalt cement used in the asphalt mix substantially continuously and substantially in real time.
Consequently, conventional control systems used in connection with the production of asphalt result in material waste, excess cost, and less than optimal asphalt mixes.
It would be desirable, therefore, to provide an apparatus and method for a control system used in connection with the production of asphalt that would be adapted to accurately and precisely control the amount of liquid asphalt cement contained in the asphalt mix. It would be further desirable if such an apparatus and method for a control system used in connection with the production of asphalt could be provided that would be adapted to collect data relating to the amount of recycled liquid asphalt cement contained in the amount of recycled asphalt pavement substantially continuously and substantially in real time. It would be still further desirable if such an apparatus and method for a control system used in connection with the production of asphalt could be provided that would be adapted to collect data relating to the amount of moisture contained in the amount of recycled asphalt pavement substantially continuously and substantially in real time. It would also be desirable if such an apparatus and method for a control system used in connection with the production of asphalt could be provided that would be adapted to collect data relating to the amount of moisture contained in the amount of aggregate material substantially continuously and substantially in real time. It would be further desirable if such an apparatus and method for a control system used in connection with the production of asphalt could be provided that would be adapted to collect data relating to the amount of liquid asphalt cement used in the asphalt mix substantially continuously and substantially in real time.
Additionally, it would be desirable if such an apparatus and method for a control system used in connection with the production of asphalt could be provided that would be adapted to reduce or eliminate material waste, excess cost, and less than optimal asphalt mixes.
It is an advantage of the preferred embodiments of invention to provide an apparatus and method for a control system used in connection with the production of asphalt that accurately and precisely controls the amount of liquid asphalt cement contained in the asphalt mix. It is another advantage of the preferred embodiments of invention to provide an apparatus and method for a control system used in connection with the production of asphalt that collects data relating to the amount of recycled liquid asphalt cement contained in the amount of recycled asphalt pavement (RAP) substantially continuously and substantially in real time. It is a further advantage of the preferred embodiments of invention to provide an apparatus and method for a control system used in connection with the production of asphalt that collects data relating to the amount of moisture contained in the amount of recycled asphalt pavement substantially continuously and substantially in real time. It is yet another advantage of the preferred embodiments of invention to provide an apparatus and method for a control system used in connection with the production of asphalt that collects data relating to the amount of moisture contained in the amount of aggregate material substantially continuously and substantially in real time. In addition, it is an advantage of the preferred embodiments of invention to provide an apparatus and method for a control system used in connection with the production of asphalt that collects data relating to the amount of liquid asphalt cement used in the asphalt mix substantially continuously and substantially in real time.
Additionally, it is an advantage of the preferred embodiments of invention to provide an apparatus and method for a control system used in connection with the production of asphalt that reduces or eliminates material waste, excess cost, and less than optimal asphalt mixes.
Additional advantages of the preferred embodiments of the invention will become apparent from an examination of the drawings and the ensuing description.
The apparatus of the invention comprises a system for controlling the production of an asphalt mix. The preferred system comprises a recycled asphalt pavement source that is adapted to provide an amount of recycled asphalt pavement to the asphalt mix and a recycled asphalt pavement sensor that is adapted to determine an amount of recycled liquid asphalt cement contained in the amount of recycled asphalt pavement provided by the recycled asphalt pavement source and an amount of RAP moisture contained in the amount of recycled asphalt pavement provided by the recycled asphalt pavement source. The preferred system also comprises a liquid asphalt cement source that is adapted to provide an amount of liquid asphalt cement to the asphalt mix and a liquid asphalt cement meter that is adapted to determine the amount of liquid asphalt cement provided by the liquid asphalt cement source. The preferred system further comprises a controller that is adapted to communicate with the recycled asphalt pavement source, the recycled asphalt pavement sensor, the liquid asphalt cement source, and the liquid asphalt cement meter. In the preferred system, the recycled asphalt pavement sensor communicates the amount of recycled liquid asphalt cement contained in the amount of recycled asphalt pavement and the amount of RAP moisture contained in the amount of recycled asphalt pavement to the controller, the liquid asphalt cement meter communicates the amount of liquid asphalt cement provided by the liquid asphalt cement source to the controller, and the controller controls the amount of recycled asphalt pavement provided by the recycled asphalt pavement source and the amount of the liquid asphalt cement provided by the liquid asphalt cement source.
The method of the invention comprises a method for controlling the production of an asphalt mix. The preferred method for controlling the production of an asphalt mix comprises providing a system for controlling the production of the asphalt mix as described above in this section. The preferred method further comprises controlling the amount of recycled asphalt pavement and the amount of liquid asphalt cement provided to the asphalt mix substantially continuously and substantially in real time.
The presently preferred embodiments of the invention are illustrated in the accompanying drawing, in which like reference numerals represent like parts throughout, and in which:
Referring now to the drawings, the preferred embodiment of the control system in accordance with the present invention is illustrated by
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The invention also comprises a method for controlling the production of an asphalt mix. The preferred method comprises providing a system for controlling the production of the asphalt mix. The preferred control system comprises a recycled asphalt pavement source that is adapted to provide an amount of recycled asphalt pavement to the asphalt mix and a recycled asphalt pavement sensor that is adapted to determine an amount of recycled liquid asphalt cement contained in the amount of recycled asphalt pavement provided by the recycled asphalt pavement source and determine an amount of RAP moisture contained in the amount of recycled asphalt pavement provided by the recycled asphalt pavement source. The preferred control system further comprises a liquid asphalt cement source that is adapted to provide an amount of liquid asphalt cement and a liquid asphalt cement meter that is adapted to determine the amount of liquid asphalt cement provided by the liquid asphalt cement source. The preferred control system still further comprises a controller that is adapted to communicate with the recycled asphalt pavement source, the recycled asphalt pavement sensor, the liquid asphalt cement source, and the liquid asphalt cement meter. In addition, in the preferred control system, the recycled asphalt pavement sensor communicates the amount of recycled liquid asphalt cement contained in the amount of recycled asphalt pavement and communicates the amount of RAP moisture contained in the amount of recycled asphalt pavement to the controller, the liquid asphalt cement meter communicates the amount of liquid asphalt cement provided by the liquid asphalt cement source to the controller, and the controller controls the amount of recycled asphalt pavement provided by the recycled asphalt pavement source and the amount of the liquid asphalt cement provided by the liquid asphalt cement source. The preferred method of the invention further comprises controlling the amount of recycled asphalt pavement and the amount of liquid asphalt cement provided to the asphalt mix substantially continuously and substantially in real time.
In other preferred embodiments of the invention, the method also comprises controlling the amount of aggregate material provided to the asphalt mix substantially continuously and substantially in real time. In yet other preferred embodiments of the invention, the method also comprises determining the amount of RAP moisture contained in the recycled asphalt pavement and the amount of recycled liquid asphalt contained in the recycled asphalt pavement substantially continuously and substantially in real time. In still other preferred embodiments of the invention, the method also comprises determining the amount of aggregate moisture contained in the aggregate material substantially continuously and substantially in real time.
In operation, several advantages of the preferred embodiments of the apparatus and method for a control system are achieved. For example, the preferred embodiments of the invention provide an apparatus and method for a control system used in connection with the production of an asphalt mix that accurately and precisely controls the amount of liquid asphalt cement, recycled asphalt pavement, and aggregate material contained in the asphalt mix substantially continuously and substantially in real time. The preferred embodiments of invention further provide an apparatus and method for a control system used in connection with the production of an asphalt mix that collects data relating to the amount of recycled liquid asphalt contained in the amount of recycled asphalt pavement substantially continuously and substantially in real time. The preferred embodiments of invention still further provide an apparatus and method for a control system used in connection with the production of an asphalt mix that collects data relating to the amount of RAP moisture contained in the amount of recycled asphalt pavement substantially continuously and substantially in real time. The preferred embodiments of invention also provide an apparatus and method for a control system used in connection with the production of an asphalt mix that collects data relating to the amount of aggregate moisture contained in the amount of aggregate material substantially continuously and substantially in real time. The preferred embodiments of invention further provide an apparatus and method for a control system used in connection with the production of asphalt that collects data relating to the amount of liquid asphalt cement used in the asphalt mix substantially continuously and substantially in real time.
Additionally, the preferred embodiments of invention provide an apparatus and method for a control system used in connection with the production of an asphalt mix that reduces or eliminates material waste, excess cost, and less than optimal asphalt mixes.
Although this description contains many specifics, these should not be construed as limiting the scope of the invention but as merely providing illustrations of some of the presently preferred embodiments thereof, as well as the best mode contemplated by the inventors of carrying out the invention. The invention, as described herein, is susceptible to various modifications and adaptations, and the same are intended to be comprehended within the meaning and range of equivalents of the appended claims.
This application relates back to and claims the benefit of priority from U.S. Provisional Application for Patent Ser. No. 61/958,275 entitled “AC Trim System” and filed on Jul. 24, 2013.
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