Method of measuring using a binary optical sensor

• US 20050230605A1
• Filed: 04/13/2005
• Published: 10/20/2005
• Est. Priority Date: 04/20/2004
• Status: Abandoned Application

• Current Assignee: Hamid Pishdadian
• Original Assignee: Hamid Pishdadian
• Inventors: Pishdadian, Hamid
• Application Number:
  US11/104,712
• Publication Number:
  US 20050230605A1
• Time in Patent Office: Days
• US Class Current: 250/221
• CPC Class Codes: G01L 9/0076 using photoelectric means

Abstract

A method of measuring distance includes the steps of providing an optical device with an optical emitter and an optical sensor that are aligned with one another. An interrupter pin is movably positioned between the optical emitter and the optical sensor. When the interrupter pin is positioned between the optical emitter and the optical sensor, an amount of optical radiation passes from the optical emitter to the optical sensor. The amount of optical radiation that passes from the optical emitter to the optical sensor correlates to the position of the interrupter pin therebetween and the amount of optical radiation that the interrupter pin permits to pass from the optical emitter to the optical sensor. The amount of optical radiation is senses by the optical sensor. The amount of radiation sensed by the radiation sensor is correlated to the position of the interrupter pin. The interrupter pin is connected to an object, the position of which is to be measured. Movement of the object causes movement of the interrupter pin between the optical emitter and the optical sensor to result in detection of an amount of optical radiation that correlates with the position of the object to be measured.

Claims

1. A method of measuring distance, comprising the steps of:

providing a radiation emitter;

providing a radiation sensor;

the radiation emitter being aligned with the radiation sensor;

providing an interrupter pin;

positioning the interrupter pin between the radiation emitter and the radiation sensor;

permitting an amount of radiation from the radiation emitter to reach the radiation sensor depending on the position of the interrupter pin therebetween;

determining the amount of radiation sensed by the radiation sensor;

correlating the amount of radiation sensed by the radiation sensor with the position of the interrupter pin between the radiation emitter and the radiation sensor; and

calculating the position of the interrupter pin from the amount of radiation sensed by the radiation sensor.

2. The method of claim 1, further comprising the steps of;

connecting the interrupter pin to an object; and

calculating the position of the object by determining the position of the interrupter pin.

3. The method of claim 1, wherein the radiation emitter is an optical emitter.

4. The method of claim 1, wherein the radiation sensor is an optical sensor.

5. The method of claim 1, wherein the radiation is infrared light.

6. The method of claim 1, wherein the radiation is visible light.

7. The method of claim 2, wherein the object is a diaphragm whereby distance of travel of the diaphragm corresponds to amount of pressure placed on the diaphragm.

8. A method of measuring distance, comprising the steps of:

providing an optical emitter having an output window with a top edge and a bottom edge;

providing a optical sensor having an input window with a top edge and a bottom edge;

the output window of the optical emitter being aligned with the input window of the optical sensor defining a transition window;

providing an interrupter pin, having a edge;

the interrupter pin being movable through the transition window thereby blocking passage of an amount of optical radiation from the optical emitter to the optical sensor depending on the position of the edge of the interrupter pin in the transition window and the position of the interrupter pin itself;

locating the edge of the interrupter pin within the transition window;

determining the amount of optical radiation sensed by the optical sensor;

correlating the amount of optical radiation sensed by the optical sensor with the position of the edge of the interrupter pin in the transition window; and

determining the position of the interrupter pin from the position of its edge.

9. The method of claim 8, further comprising the steps of;

connecting the interrupter pin to an object; and

calculating the position of the object by determining the position of the edge of the interrupter pin.

10. The method of claim 8, wherein the optical radiation is infrared light.

11. The method of claim 8, wherein the optical radiation is visible light.

12. The method of claim 9, wherein the object is a diaphragm whereby distance of travel of the diaphragm corresponds to amount of pressure placed on the diaphragm.

13. The method of claim 8, wherein the edge of the interrupter pin is flat.

14. The method of claim 8, wherein the edge of the interrupter pin is angled.

15. The method of claim 8, wherein the edge of the interrupter pin is rounded.

16. An apparatus for measuring pressure, comprising:

an optical emitter;

an optical sensor;

the optical emitter being aligned with the optical sensor;

an interrupter pin movably positioned between the optical emitter and the optical sensor;

the position of the interrupter pin permitting an amount of optical radiation from the optical emitter to reach the optical sensor;

the amount of optical radiation sensed by the optical sensor correlating to the position of the interrupter pin between the optical emitter and the optical sensor.

17. The apparatus of claim 16, further comprising;

an object, the positioned of which to be measured, connected to the interrupter pin.

18. The apparatus of claim 17, wherein the object is a diaphragm whereby distance of travel of the diaphragm corresponds to amount of pressure placed on the diaphragm.