Measuring device for determining physical and chemical properties of gases, liquids and solids

• US 6,625,548 B2
• Filed: 07/17/2002
• Issued: 09/23/2003
• Est. Priority Date: 09/08/1998
• Status: Expired due to Term

• Current Assignee: Endress+Hauser GmbH+Co (ENDRESS)
• Original Assignee: Endress+Hauser GmbH+Co (ENDRESS)
• Inventors: Babel, Wolfgang
• Primary Examiner(s): Hoff, Marc S.
• Assistant Examiner(s): Tsai, Carol S W
• Application Number:
  US10/196,137
• Publication Number:
  US 20020183939A1
• Time in Patent Office: 433 Days
• Field of Search: 702/22-24, 702/27-29, 702/30-32, 702/45, 702/47, 702/49, 702/50, 702/55, 702/98-100, 702/108, 702/114, 702/124, 702/127, 702/130, 702/136, 702/138, 702/140, 702/182, 702/183, 702/188, 702/189, 702/FOR-115, 702/FOR-134, 702/FOR-142, 702/FOR-170, 73/250.1, 422/62, 700/266, 700/2, 700/3
• US Class Current: 702/22
• CPC Class Codes: G01N 33/0009 General constructional details of gas analysers, e.g. portable test equipment devices for withdrawing samples in the gaseous state G01N1/22

Abstract

A measuring system for determining physical and chemical properties of gases, liquids and solids includes a computing unit which is coupled with at least one sensor by means of a high capacity communications network. The system eliminates the need for dedicated cabling between the sensor and the computing unit.

Claims

1. A measuring system for determining a chemical or physical property of a gaseous, liquid or solid medium, the system comprising:

a stationary holding means;

at least one sensor mounted to said stationary holding means to contact the medium, said sensor consisting essentially of means for detecting the chemical or physical property of the medium, means for generating at least one electrical signal having at least one signal properly which provides quantitative information concerning the chemical or physical property to be determined and a one-way, output only sensor interface for output of said electrical signal;

an analyzer unit, said analyzer unit accepting input concerning said electrical signal from said sensor, said analyzer unit having means for processing said signal property to extract said quantitative information; and

a multiple input and multiple output communications network disposed between and connecting said sensor interface and said analyzer unit to transmit said signal property from said sensor to said analyzer unit, said communications network having switching means for connecting together a selected one of said multiple inputs with selected one of said multiple outputs, said network generating an input-output connection for transmitting that signal property, wherein said communications network has a total number of possible input-output connections defining an overall communication capacity which greatly exceeds a communication capacity required for transmission of said signal property alone.

2. The measuring system of claim 1, wherein said communication network is one of a radio network, a telephone network, an internet network, an intranet network, and a power grid network.

3. The measuring system of claim 1, wherein said analyzer unit comprises a personal computer.

4. The measuring system of claim 1, wherein said sensor is one of a liquid analysis sensor, a gas analysis sensor, a liquid moisture sensor and a gas moisture sensor.

5. The measuring system of claim 1, wherein said sensor is one of a pressure sensor, a flow sensor, a filling level sensor, a pH value sensor, a cloudiness sensor, a temperature sensor, a chlorine content sensor, a chlorine dioxide sensor, an oxygen content sensor, a conductivity sensor, and a moisture sensor.

6. The measuring system of claim 1, wherein a plurality of sensors are provided, each sensor for measuring at least one of a plurality of physical or chemical properties, and further comprising multiplexer means disposed between and connecting said plurality of sensors and said communications network.

7. The measuring system of claim 1, further comprising at least one actuator, said actuator generating a mechanical or electrical output in response to reception of said quantitative information extracted by said analyzer unit, and also further comprising a second multiple input and multiple output communications network disposed between and connecting said actuator and said analyzer unit to transmit said quantitative information from said analyzer unit to said actuator, said second communications network having switching means for connecting together a selected one of said multiple inputs with a selected one of said multiple outputs to create an input-output connection for transmitting said quantitative information, a total plurality of possible input-output connections of said second communications network defining an overall communication capacity for said second communications network, which greatly exceeds a communication capacity required for transmission of said quantitative information alone.

8. The measuring system of claim 7, wherein said second communication network is one of a radio network, a telephone network, an internet network, an intranet network, and a power grid network.

9. The measuring system of claim 7, wherein said analyzer unit comprises a personal computer.

10. The measuring system of claim 7, wherein said sensor is one of a liquid analysis sensor, a gas analysis sensor, a liquid moisture sensor and a gas moisture sensor.

11. The measuring system of claim 7, wherein said sensor is one of a pressure sensor, a flow sensor, a filling level sensor, a pH value sensor, a cloudiness sensor, a temperature sensor, a chlorine content sensor, a chlorine dioxide sensor, an oxygen content sensor, a conductivity sensor, and a moisture sensor.

12. The measuring system of claim 7, wherein a plurality of sensors are provided, each sensor for measuring at least one of a plurality of physical or chemical properties, and further comprising multiplexer means disposed between and connecting said plurality of sensors and said communications network.

13. The measuring system of claim 12, wherein a plurality of actuators are provided, each actuator for generating at least one of a plurality of activities in response to said plurality of physical or chemical properties, and further comprising a second multiplexer means disposed between and connecting said plurality of actuators and said second communications network.

14. A method for determining a chemical or physical property of a gaseous, liquid of solid medium, the method comprising the steps of:

mounting at least one sensor to a stationary holding means to contact a medium, said sensor consisting essentially of means for detecting the chemical or physical property of the medium, means for generating at least one electrical signal having at least one signal property which provides quantitative information concerning the chemical or physical property to be determined, and a one-way output only sensor interface for output of said electrical signal;

configuring an analyzer unit to accept input concerning said electrical signal from said sensor, said analyzer unit having means for processing said signal property to extract said quantitative information; and

connecting a multiple input and multiple output communications network between said sensor interface and analyzer unit to transmit said signal property from said sensor to said analyzer unit, said communications network having switching means for connecting together a selected one of said multiple inputs with the selected one of said multiple outputs, said network generating an input-output connection for transmitting said signal property, wherein said communication network has a total number of possible input-output connections defining an overall communications capacity for said communications network which greatly exceeds a communication capacity required for transmission of said signal property alone.

15. The method of claim 14, wherein said communication network is one of a radio network, a telephone network, an internet network, an intranet network, and a power grid network.

16. The method of claim 14, wherein said analyzer unit comprises a personal computer.

17. The method of claim 14, wherein said sensor is one of a liquid analysis sensor, a gas analysis sensor, a liquid moisture sensor and a gas moisture sensor.

18. The method of claim 14, wherein said sensor is one of a pressure sensor, a flow sensor, a filling level sensor, a pH value sensor, a cloudiness sensor, a temperature sensor, a chlorine content sensor, a chlorine dioxide sensor, an oxygen content sensor, a conductivity sensor, and a moisture sensor.

19. The method of claim 14, further comprising configuring at least one actuator to generate a mechanical or electrical output in response to reception of said quantitative information extracted by said analyzer unit, and also further comprising disposing a second multiple input and multiple output communications network to connect said actuator to said analyzer unit for transmitting said quantitative information from said analyzer unit to said actuator, said second communications network having switching means for connecting together a selected one of said multiple inputs with a selected one of said multiple outputs to create an input-output connection for transmitting said quantitative information, a total plurality of possible input-output connections defining an overall communication capacity for said second communications network which greatly exceeds a communication capacity required for transmission of said quantitative information alone.