Sensor arrangement

• US 7,040,139 B2
• Filed: 06/10/2004
• Issued: 05/09/2006
• Est. Priority Date: 06/10/2003
• Status: Active Grant

• Current Assignee: Smiths Detection (Smiths Group International Holdings Ltd.)
• Original Assignee: Smiths Detection (Smiths Group International Holdings Ltd.)
• Inventors: Sunshine, Steven A.
• Primary Examiner(s): CYGAN, MICHAEL T
• Application Number:
  US10/864,551
• Publication Number:
  US 20050022581A1
• Time in Patent Office: 698 Days
• Field of Search: 73/240.1, 73/232, 73/233.4, 257/253, 338/34, 338/35, 340/505, 340/10.1, 340/10.3, 422/98
• US Class Current: 73/23.2
• CPC Class Codes: G01N 2291/0255 (Bio)chemical reactions, e.g. on biosensors
• CPC Class Codes: G01N 2291/0256 Adsorption, desorption, surface mass change, e.g. on biosensors
• CPC Class Codes: G01N 2291/0423 Surface waves, e.g. Rayleigh waves, Love waves
• CPC Class Codes: G01N 2291/0426 Bulk waves, e.g. quartz crystal microbalance, torsional waves
• CPC Class Codes: G01N 2291/106 one or more transducer arrays
• CPC Class Codes: G01N 29/022 Fluid sensors based on microsensors, e.g. quartz crystal-microbalance [QCM], surface acoustic wave [SAW] devices, tuning forks, cantilevers, flexural plate wave [FPW] devices microdevices per se B81B
• CPC Class Codes: G01N 29/2481 Wireless probes, e.g. with transponders or radio links
• CPC Class Codes: G01N 33/0031 comprising two or more sensors, e.g. a sensor array electrochemical electrode arrays G01N27/27
• CPC Class Codes: G01N 33/0073 Control unit therefor
• CPC Class Codes: G01N 33/493 urine
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

A chemical sensing system has: an interrogation unit operable to wirelessly transmit an interrogation signal and wirelessly receive a response; an environmentally sealed container for holding a chemical analyte; a sensor array unit in fluid communication with the analyte disposed within the container, where the sensor array unit is operable to generate a response in the presence of a chemical stimulus; and a passive responder unit connected with the sensor array unit, the responder unit being powered from the interrogation signal, where the responder unit is operable to wirelessly receive the interrogation signal and wirelessly transmit the response to the interrogation signal to the interrogation unit.

Claims

1. A sensor arrangement, comprising:

a container configured to be environmentally sealed and to hold a chemical analyte;

an interrogation unit which is separate from the container and operable to wirelessly transmit an interrogation signal and to wirelessly receive a response;

a sensor array unit in fluid communication with the analyte disposed within the container, the sensor array unit being configured to analytically respond to a chemical characteristic of the analyte; and

a responder unit connected with the sensor array unit, the responder unit being configured to be powered by the interrogation signal, the responder unit being operable to wirelessly transmit to the interrogation unit a signal indicative of the sensor array unit'"'"'s response to the analyte,

wherein the container has a lid and wherein the sensor array is supported on the lid.

2. The sensor arrangement of claim 1, wherein the sensor array is supported on an underside of the lid and thus enclosed within the container when the lid is fitted onto the container.

3. A sensing method, comprising:

closing the container and enclosing a sensor array therein such that the sensor array is analytically exposed to vapor from the sample so as to be analytically exposed thereto;

using an interrogation unit which is separate from the container to wirelessly transmit an interrogation signal to a responder unit operatively connected with the sensor array, wherein the interrogation signal powers the responder unit;

generating a response indicative of the sample as sensed by the sensor array;

wirelessly transmitting the response to the interrogation unit using the responder unit; and

supporting the sensor array on a lid which closes the container.

4. The method of claim 3, wherein the supporting step comprises supporting the sensor array on an underside of the lid.