The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 06, 2007
Filed:
Jan. 18, 2005
Burkhard Stock, Lübeck, DE;
Theodor Kater, Lübeck, DE;
Burkhard Stock, Lübeck, DE;
Theodor Kater, Lübeck, DE;
Dräger Safety AG & Co., KGaA, , DE;
Abstract
A breath alcohol measuring device is provided with a pressure sensor () for detecting a signal representative of the breathing air flow and with an electrochemical sensor () for detecting a signal representative of the alcohol content in the breathing air and with evaluating means for processing the signals and for determining the breath alcohol concentration. Such a breath alcohol measuring device has a simple design and high measuring accuracy. The pressure sensor () and the electrochemical sensor () are connected for this purpose with a delta-sigma analog-digital converter (), which converts the sensor signals directly into digital measured values for determining the alcohol concentration. The pre-amplifiers needed hitherto become unnecessary as a result, which has a number of advantages.