Refrigeration temperature monitoring system and associated temperature display
First Claim
1. A temperature display and alarm device, comprising:
- a microprocessor;
a serially addressed temperature sensor, said temperature sensor transmitting temperature data to said microprocessor;
a display screen for displaying temperature data relayed from said microprocessor;
a light source, said light source being activated by said microprocessor to indicate a plurality of temperature conditions;
a light guide, said light guide receiving incident light from said light source and redirecting said light through said light guide in a direction exterior to said light source, said light guide having an exterior light-dispersive edge for receiving said redirected light from said light source and radially dispersing said light around said guide; and
a cover, said cover engaging with said exterior edge of said light guide, said engagement leaving an air gap between a top surface of said light guide and a bottom surface of said cover, said cover further comprising a translucent, textured exterior edge for emitting dispersed light received from said exterior edge of said light guide.
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Accused Products
Abstract
The invention is a system for monitoring a plurality of cold cases located in a retail food establishment. The system employs a wireless mesh network, which uses monitoring computers in communication with the cold cases for sending temperature data to a master control computer located in a retail establishment, by the most efficient route, even if the most efficient route is first through a second monitoring computer and secondly to the main computer. The invention also employs an inventive microprocessor-controlled temperature monitoring and display device which mounts on each cold case and which emits various colored lights to serve as a visible indicator of the temperature condition of a cold case. The emitted, colored, light is visible from both the front and side of the display device, which allows untrained store personnel to readily determine the temperature condition of a cold case by referring to a color coding chart.
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Citations
6 Claims
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1. A temperature display and alarm device, comprising:
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a microprocessor; a serially addressed temperature sensor, said temperature sensor transmitting temperature data to said microprocessor; a display screen for displaying temperature data relayed from said microprocessor; a light source, said light source being activated by said microprocessor to indicate a plurality of temperature conditions; a light guide, said light guide receiving incident light from said light source and redirecting said light through said light guide in a direction exterior to said light source, said light guide having an exterior light-dispersive edge for receiving said redirected light from said light source and radially dispersing said light around said guide; and a cover, said cover engaging with said exterior edge of said light guide, said engagement leaving an air gap between a top surface of said light guide and a bottom surface of said cover, said cover further comprising a translucent, textured exterior edge for emitting dispersed light received from said exterior edge of said light guide. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification