Sensor and transducer apparatus

• US 5,589,639 A
• Filed: 01/18/1994
• Issued: 12/31/1996
• Est. Priority Date: 02/28/1986
• Status: Expired due to Fees

• Current Assignee: Nicholas F D'Antonio
• Original Assignee: Nicholas F D'Antonio
• Inventors: D'Antonio, Nicholas J., D'Antonio, Nicholas F.
• Primary Examiner(s): Chilcot, Richard
• Assistant Examiner(s): Biegel, Ronald C.
• Application Number:
  US08/182,578
• Time in Patent Office: 1,078 Days
• Field of Search: 73/379.02, 73/728, 73/745, 73/862.454, 73/862.585
• US Class Current: 73/724
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61H 2201/5007 computer controlled
• CPC Class Codes: A61H 2201/5043 Displays
• CPC Class Codes: A61H 2201/5048 Audio interfaces, e.g. voice or music controlled
• CPC Class Codes: A61H 2201/5058 Sensors or detectors
• CPC Class Codes: A61H 2201/5071 Pressure sensors
• CPC Class Codes: A61H 2201/5097 wireless
• CPC Class Codes: A61H 2230/40 Respiratory characteristics
• CPC Class Codes: A61H 31/005 with feedback for the user
• CPC Class Codes: A61H 31/007 Manual driven
• CPC Class Codes: G01D 5/243 influencing the phase or frequency of ac
• CPC Class Codes: G01F 1/28 by drag-force, e.g. vane type or impact flowmeter
• CPC Class Codes: G01F 1/383 with electrical or electro-mechanical indication
• CPC Class Codes: G01K 5/46 with electric conversion means for final indication
• CPC Class Codes: G01L 15/00 Devices or apparatus for measuring two or more fluid pressure values simultaneously
• CPC Class Codes: G01L 19/0007 Fluidic connecting means
• CPC Class Codes: G01L 5/0028 Force sensors associated with force applying means G01L5/0052, G01L5/0057, G01L5/0061 take precedence
• CPC Class Codes: G01L 9/0058 of pressure sensitive conductive solid or liquid material, e.g. carbon granules
• CPC Class Codes: G01L 9/007 using variations in inductance
• CPC Class Codes: G01L 9/0072 using variations in capacitance
• CPC Class Codes: G01L 9/04 : of resistance-strain gauges
• CPC Class Codes: G01L 9/10 : by making use of variations in inductance , i.e. electric circuits therefor
• CPC Class Codes: G01L 9/12 : by making use of variations in capacitance , i.e. electric circuits therefor
• CPC Class Codes: G01P 15/038 : by using fluidic means
• CPC Class Codes: G01P 15/0891 : with indication of predetermined acceleration values G01P15/135 takes precedence
• CPC Class Codes: G01P 15/11 : by inductive pick-up

Abstract

A force sensing system for a CPR device which generates an intelligible output signal corresponding to a force parameter. The system is comprised of a sensing device for sensing force exerted thereon and producing an electric reactance signal in response to the force exerted, and a processor for processing the electric reactance signal into an intelligible output signal which is shown on a display device.

Claims

1. A force sensing system for generating a intelligible output signal corresponding to a parameter, said system comprising:

sensing means having a stationary first portion and a second portion movable relative to the first portion for generating an electric reactance signal corresponding to the parameter;

first supporting means connected to a housing or conduit for supporting said first portion of said sensing means;

second deflectable supporting means for supporting said movable second portion of said sensing means;

securing means for securing said first and second supporting means in a movable relationship, said first and second supporting means being movable relative to each other in response to the occurrence of said parameter to move said movable second portion with respect to said stationary first portion of said sensing means to generate said electric reactance signal;

processing means including reactance controlled square wave generator means for receiving said reactance signal and for generating a corresponding variable period pulse train transduced signal, voltage converter means for establishing a voltage signal having a magnitude proportional to the frequency of the variable period pulse train transduced signal, and means for receiving said voltage signal and generating an intelligible output signal reflective of the magnitude and variation in said voltage signal; and

transmitting means for transmitting said electric reactance signal from said sensing means to said processing means.

2. A force sensing system for generating an intelligible output signal corresponding to a parameter, said system comprising:

sensing means having a stationary first portion and a second portion movable relative to the first portion for generating an electric reactance signal corresponding to the parameter;

first stationary supporting means connected to a housing or conduit for supporting said first portion of said sensing means;

second deflectable supporting means for supporting said second portion of said sensing means for movement relative to said first stationary supporting means in response to the occurrence of said parameter, to move said second portion to generate said electric reactance signal;

processing means including reactance controlled square wave generator network means for receiving said reactance signal and for generating a corresponding variable period pulse train transduced signal, voltage converter means for establishing a voltage signal having a magnitude proportional to the frequency of the variable period pulse train transduced signal, and means for receiving said voltage signal and generating an intelligible output signal reflective of the magnitude and variation in said voltage signal; and

transmitting means for transmitting said electric reactance signal from said sensing means to said processing means.