Live fire target system

• US 4,799,688 A
• Filed: 01/27/1987
• Issued: 01/24/1989
• Est. Priority Date: 01/27/1987
• Status: Expired due to Fees

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Flower, Richard E., Kidder, Harvey L., Kellman, George A.
• Primary Examiner(s): Picard, Leo P.
• Assistant Examiner(s): HARRISON, JESSICA
• Application Number:
  US07/007,211
• Time in Patent Office: 728 Days
• Field of Search: 273/348, 273/348.1, 273/371, 273/372, 273/373, 273/376, 434/16, 324/58, 324/5 B, 324/534, 324/71.4
• US Class Current: 273/371
• CPC Class Codes: F41J 2/02 Active targets transmitting infrared radiation
• CPC Class Codes: F41J 5/04 Electric hit-indicating systems; Detecting hits by actuation of electric contacts or switches

Abstract

A target system includes a target comprising a plurality of spaced, parallel, electrically conductive strips disposed on a target surface. An electrically conductive backplane is provided on a back surface of the target in a plane parallel to the target surface. The system further includes Time Domain Reflectometry pulse generator connected to the backplane and to one end of each of the conductive strips for generating a pulse on each of the strips. The characteristics of reflected pulse are measured to determine the size and location of any projectile hits through the target. The backplane is energized to provide the target with a thermal silhouette.

Claims

1. A target system comprising:

a dielectric support defining mutually parallel target and back surfaces;

a plurality of electrically conductive strips disposed on said target surface in generally parallel, spaced relationship;

a conductive backplane disposed on said back surface;

sensing means connected to said backplane and at one end of each of said electrically conductive strips for applying an electrical pulse on each of said electrically conductive strips and sensing a reflection of said electrical pulse from the end of an electrically conductive strip and from any hits through an electrically conductive strip so as to detect the size and location of a hit on said target.

2. The target system of claim 1 wherein said sensing means determines the time between the initial generation of said electrical pulse and the reflections of said electrical pulse.

3. The target system of claim 2 wherein said sensing means further determines the magnitude of the reflections of said electrical pulse.

4. The target system of claim 1 wherein said strips are patterned on a flexible dielectric base.

5. The target system of claim 1 wherein said backplane is patterned on a flexible dielectric base.

6. The target system of claim 1 and further including a scanner connected between said sensing means and said plurality of conductive strips.

7. The target system of claim 1 wherein said dielectric support comprises a substantially homogeneous material.

8. A target system comprising:

a dielectric support defining mutually parllel target and back surfaces;

a plurality of electrically conductive strips disposed on said target surface in generally parallel, spaced relationship;

a conductive backplane disposed on said back surface;

sensing means connected to said back plane and at one end of each of said electrically conductive strips for applying an electrical pulse on each of said electrically conductive strips and sensing the reflection of said electrical pulse from the end of an electrically conductive strip and from any hits through an electrically conductive strip so as to detect the size and location of a hit on said target; and

energizing means connected to said conductive backplane for passing an electrical current through said backplane so as to cause said backplane to generate a thermal image.

9. The target system of claim 8 wherein said energizing means comprises:

a voltage source;

first bus means for connecting a first polarity of said voltage source to a first region of said backplane; and

second bus means for connecting a second polarity of said voltage source to a second region of said backplane.

10. The target system of claim 8 wherein said sensing means determines the time between the initial generation of said electrical pulse and the reflections of said electrical pulse.

11. The target system of claim 10 wherein said sensing means further determines the magnitude of the reflections of said electrical pulse.

12. The target system of claim 8 wherein said strips are patterned on a flexible dielectric base.

13. The target system of claim 8 wherein said backplane is patterned on a flexible dielectric base.

14. The target system of claim 8 and further including a scanner connected between said sensing means and said plurality of conductive strips.

15. The target system of claim 8 wherein said dielectric support comprises a substantially homogeneous material.

16. A target system comprising:

a dielectric support defining mutually parallel target and back surfaces;

a plurality of electrically conductive strips disposed on said target surface in generally parallel, spaced relationship;

a dielectric base defining mutually parallel first and second surfaces;

a first conductive backplane disposed on said first surface of said dielectric base;

a second conductive backplane disposed on said second surface of said dielectric base;

said first backplane mounted on said back surface of said dielectric support;

sensing means connected to said first backplane and at one end of each of said electrically conductive strips for applying an electrical pulse on each of said electrically conductive strips and sensing the reflection of said electrical pulse from the end of an electrically conductive strip and from any hits through an electrically conductive strip so as to detect the size and location of a hit on said target; and

energizing means connected to said second backplane for passing an electrical current through said second backplane so as to cause said second backplane to generate a thermal image.

17. The target system of claim 16 wherein said energizing means comprises:

a voltage source;

first bus means for connecting a first polarity of said voltage source to a first region of said second backplane; and

second bus means for connecting a second polarity of said voltage source to a second region of said second backplane.

18. The target system of claim 16 wherein said sensing means determines the time between the initial generation of said electrical pulse and the reflections of said electrical pulse.

19. The target system of claim 16 wherein said sensing means further determines the magnitude of the reflections of said electrical pulse.

20. The target system of claim 16 wherein said strips are patterned on a flexible dielectric base.

21. The target system of claim 16 and further including a scanner connected between said sensing means and said plurality of conductive strips.

22. The target system of claim 16 wherein said dielectric support comprises a substantially homogeneous material.

23. A target system comprising:

a dielectric support defining a target surface;

at least one electrically conductive strip disposed on said target surface;

sensing means connected to said strip for generating a pulsed electrical effect so as to detect the size and location of any hits through said target.

24. The target system of claim 23 wherein said pulsed electrical effect comprises the applying of an electrical pulse to a first end of said strip and the sensing of reflections of said electrical pulse from the other end of said strip and from any hits through said strip.

25. The target system of claim 24 wherein said sensing means is connected to a first end of said strip for applying said electrical pulse to said strip.

26. The target system of claim 25 wherein said sensing means determines the time between the initial generation of said electrical pulse and the reflections of said electrical pulse.

27. The target system of claim 26 wherein said sensing means further determines the magnitude of the reflections of said electrical pulse.

28. The target system of claim 25 wherein:

said target further defines a back surface parallel to said target surface;

a conductive backplane overlies said back surface; and

said sensing means is further connected to said backplane.