Storage bag air extractor having monitoring function

Abstract

A storage bag air extractor having a monitoring function includes: a housing; a power input unit used for inputting a DC power source; a power switch; a voltage boosting circuit; a current detecting unit used for detecting a current; a controlling unit used for receiving an analog voltage value outputted by the current detecting unit and converted into a digital voltage value, wherein a voltage threshold value is determined after a calculating operation; a motor switch used for performing a switching operation according to a level of the voltage threshold value; a motor used for performing an air extracting operation to a storage bag externally connected; and at least one indicating unit capable of displaying a flash lighting signal or a constant lighting signal with respect to the analog voltage value, after being converted, being smaller or greater than the voltage threshold voltage.

What is claimed is: 
     
         1 . A storage bag air extractor having a monitoring function, including:
 a housing, having a first opening, a second opening, a first hole and a second hole;   a power input unit, disposed in said housing, exposed out from said first opening, and used for inputting a DC power source;   a power switch, disposed in said housing, exposed out from said second opening, and used for turning on or turning off said DC power source;   a voltage boosting circuit, disposed in said housing, one end thereof coupled with said power switch, and used for boosting said DC power source to a second voltage level;   a current detecting unit, disposed in said housing, one end thereof coupled with said voltage boosting circuit, and used for detecting a current;   a controlling unit, disposed in said housing, one end thereof respectively coupled with said power switch and said current detecting unit, and used for receiving an analog voltage value outputted by said current detecting unit and converted into a digital voltage value, wherein a voltage threshold value is determined after a calculating operation;   a motor switch, disposed in said housing, one end thereof respectively coupled with said current detecting unit and said controlling unit, and used for performing a switching operation according to a level of said voltage threshold value;   a motor, disposed in said housing, and one end thereof coupled with said motor switch, wherein when said motor is actuated, said motor is used for performing an air extracting operation to a storage bag externally connected to said first hole; and   at least one indicating unit, disposed in said housing, and exposed out from said second hole, wherein when said current detecting unit detects that said analog voltage value, after being converted, is smaller than said voltage threshold voltage, said indicating unit is served to display a flash lighting signal; and when said current detecting unit detects that said analog voltage value, after being converted, is greater than said voltage threshold value, said indicating unit is served to display a constant lighting signal.   
     
     
         2 . The storage bag air extractor having the monitoring function as claimed in  claim 1 , wherein said housing further has a third opening and a plurality of third holes, and said plurality of third holes are used for facilitating air flowing when said air extracting operation is performed. 
     
     
         3 . The storage bag air extractor having the monitoring function as claimed in  claim 2 , further including a power output unit, disposed in said housing, exposed out from said third opening, and used for outputting said DC power source. 
     
     
         4 . The storage bag air extractor having the monitoring function as claimed in  claim 1 , wherein said controlling unit is a microcontroller, a memory is disposed in said controlling unit, and said memory is provided a built-in program used for calculating and determining said voltage threshold valve. 
     
     
         5 . The storage bag air extractor having the monitoring function as claimed in  claim 4 , wherein said built-in program is a sample variation method, a method of calculating average value after eliminating extreme values, an average method, a matrix method or a comparing method, which is used for processing digital data so as to calculate and determine said voltage threshold valve. 
     
     
         6 . The storage bag air extractor having the monitoring function as claimed in  claim 1 , wherein said power input unit is a Micro USB 5V DC power source, and said second voltage level is DC 6˜12V 
     
     
         7 . The storage bag air extractor having the monitoring function as claimed in  claim 3 , wherein said power output unit is a USB Type A connector. 
     
     
         8 . The storage bag air extractor having the monitoring function as claimed in  claim 1 , further including a combing base, at least one thread is formed at a front end of said combing base, thereby allowing said storage bag to be screwed and fastened in said first hole. 
     
     
         9 . The storage bag air extractor having the monitoring function as claimed in  claim 1 , wherein said indicating unit is a light emitting diode unit capable of emitting various colors of light. 
     
     
         10 . The storage bag air extractor having the monitoring function as claimed in  claim 1 , wherein further including a printed circuit board, disposed in said housing, and used for allowing said power input unit, said power switch, said voltage boosting circuit, said current detecting unit, said controlling unit, said motor switch and said indicating unit to be disposed thereon.