Configuration for Detecting a Physical Parameter at a Stack of Sheets Lying on Top of One Another

Abstract

A configuration for detecting a physical parameter at a stack of sheets resting on top of each other obtains signals from inside a stack in a wireless manner. At least one sensor that responds to changes in the parameter, is disposed between two sheets in the stack and is connected to a stationary evaluation unit. The sensor and the evaluation unit are connected by a wireless connection.

1 . A configuration for detecting a physical parameter at a stack of sheets resting on top of each other, the configuration comprising:
 at least one sensor inserted between two sheets in the stack for responding to changes in the parameter;   a stationary evaluation unit; and   a wireless connection between said at least one sensor and said evaluation unit.   
     
     
         2 . The configuration according to  claim 1 , wherein said wireless connection is a radio link between said at least one sensor and said evaluation unit. 
     
     
         3 . The configuration according to  claim 2 , wherein said at least one sensor includes a transponder. 
     
     
         4 . The configuration according to  claim 3 , wherein said at least one sensor is strip-shaped, and said transponder includes an antenna projecting from the stack. 
     
     
         5 . The configuration according to  claim 1 , wherein the physical parameter is temperature, and said at least one sensor responds to temperature changes in the stack. 
     
     
         6 . The configuration according to  claim 1 , wherein the physical parameter is humidity, and said at least one sensor responds to humidity changes in the stack. 
     
     
         7 . The configuration according to  claim 1 , wherein the physical parameter is pressure, and said at least one sensor responds to pressure changes in the stack. 
     
     
         8 . The configuration according to  claim 1 , wherein the stack is disposed in a delivery of a sheet-fed printing press having a conveying path for the sheets, a drier disposed in the conveying path, and a control unit for the drier, and said evaluation unit is connected to the control unit. 
     
     
         9 . The configuration according to  claim 8 , which further comprises a device associated with the stack for inserting said at least one sensor. 
     
     
         10 . The configuration according to  claim 1 , wherein said at least one sensor is a microsensor. 
     
     
         11 . The configuration according to  claim 10 , wherein said at least one sensor has outer dimensions of less than 1 mm.