Vehicle testing lamp apparatus, system, and method

• US 7,948,184 B2
• Filed: 10/02/2007
• Issued: 05/24/2011
• Est. Priority Date: 10/02/2006
• Status: Expired due to Fees

• Current Assignee: Luminys Systems Corp.
• Original Assignee: Luminys Systems Corp.
• Inventors: McDonald, David B., Heffelfinger, David M., Pringle, David A., Nalbandyan, Ashot
• Primary Examiner(s): Owens; Douglas W
• Assistant Examiner(s): Chen; Jianzi
• Application Number:
  US11/906,573
• Publication Number:
  US 20080116814A1
• Time in Patent Office: 1,330 Days
• Field of Search: 315/77, 315/82, 315/209.R, 315/160, 315/172, 315/224, 315/291, 315/306, 315/307, 315/308
• US Class Current: 315/77
• CPC Class Codes: G03B 15/05 Combinations of cameras with electronic flash apparatus; Electronic flash units
• CPC Class Codes: G03B 2215/05 Combinations of cameras with electronic flash units

Abstract

A vehicle testing lamp system comprising an onboard controller unit, an off-board controller unit, and a lamp fixture. The onboard controller unit comprises a solid state relay, the solid state relay being switchable between an idle output power setting and a high output power setting; a timing circuit,; a transfer circuit; a current sensor; a current regulator; and batteries or other auxiliary power supply. The off-board controller unit comprises a power supply electrically connected to a voltage booster circuit. The lamp fixture comprises an ignitor; a shock mount; and a lamp that is electrically connected to the igniter. The off-board controller supplies power to the lamp at its idle level. The onboard transfer circuit permits the off-board power supply to be disconnected while the onboard controller unit maintains the lamp at idle, and the onboard timing circuit limits the time that the lamp remains at high output. Also disclosed is a method for using a vehicle testing lamp system.

Claims

1. A vehicle testing lamp system comprising:

(a) one or more onboard controller units comprising;

an onboard solid state relay, the onboard solid state relay being switchable between an idle output power setting and a high output power setting, electrically connected to an onboard timing circuit, electrically connected to an onboard transfer circuit, electrically connected to an onboard current sensor, electrically connected to an onboard current regulator, electrically connected to onboard batteries, the onboard batteries providing electrical power to the onboard solid state relay, onboard timing circuit, onboard transfer circuit, onboard current sensor, and onboard current regulator,

(b) one or more off-board controller units comprising;

an off-board power supply electrically connected to an off-board voltage booster circuit; and

;

(c) one or more lamp fixtures comprising;

(i) a lamp, the lamp being positioned within a shock mount and being electrically connected to an igniter, the lamp comprising a long arc xenon lamp,

(ii) the ignitor being closed in a Faraday cage, and

(iii) the shock mount having a first shock ring, a second shock ring, and a plurality of springs, the first shock ring encircling a first end of the lamp and the second shock ring encircling a second end of the lamp, wherein at least three of the plurality of springs position the first end of the lamp essentially centrally within the first shock ring and at least three of the plurality of springs position the second end of the lamp essentially centrally within the second shock ring, and

wherein the off-board controller unit supplies power to the lamp at the idle output level, wherein the onboard transfer circuit permits the off-board power supply to be disconnected while the onboard controller unit maintains the lamp at the idle output level, wherein the onboard current regulator limits the amount of current to the lamp when the onboard solid state relay is in the idle output power setting, wherein the onboard timing circuit limits the time that the lamp remains at the high output level following receipt of a trigger pulse, and wherein the onboard controller unit has a maximum weight of about eleven kilograms.

2. The vehicle testing lamp system of claim 1 wherein:

(a) the one or more off-board power supplies comprises a plurality of off-board power supplies;

(b) the one or more onboard controller units comprises a plurality of onboard controller units;

(c) the one or more lamp fixtures comprises a plurality of lamp fixtures, wherein one lamp fixture is connected to one onboard controller unit;

(d) an off-board distribution box, the off-board distribution box combining a plurality of output cables from the plurality of off-board power supplies into a single cable; and

(e) an onboard distribution box connected to the off-board distribution box by the single cable, the onboard distribution box de-multiplexing the single cable into a plurality of cables, one cable for each onboard controller unit of the plurality of onboard controller units, wherein the off-board distribution box, onboard distribution box, and single cable define a distribution box system;

wherein the distribution box system transmits electrical power from the plurality of off-board power supplies to the plurality of onboard controller units for operating the plurality of lamp fixtures.

3. A vehicle testing lamp system comprising an onboard controller unit having:

(a) an onboard relay, the onboard relay being switchable between an idle output power setting and a high output power setting;

(b) an onboard timing circuit electrically connected to the onboard relay;

(c) an onboard transfer circuit electrically connected to the onboard timing circuit;

(d) an onboard current sensor electrically connected to the onboard transfer circuit;

(e) an onboard current regulator electrically connected to the onboard current sensor;

(f) an auxiliary power supply electrically connected to the onboard current regulator, the auxiliary power supply providing electrical power to the onboard relay, onboard timing circuit, onboard transfer circuit, onboard current sensor, and onboard current regulator.

4. The vehicle testing lamp system of claim 3, the onboard relay comprising a plurality of solid state relays.

5. The vehicle testing lamp system of claim 3, the auxiliary power supply comprising one or more batteries.

6. The vehicle testing lamp system of claim 3, the auxiliary power supply comprising one or more ultra-capacitors.

7. The vehicle testing lamp system of claim 3, the auxiliary power supply being off-board of a vehicle under test and being electrically connected to the onboard controller unit by an electrical cable.

8. The vehicle testing lamp system of claim 3, further comprising an off-board controller unit having an off-board power supply electrically connected to an off-board voltage booster circuit.

9. The vehicle testing lamp system of claim 8 further comprising a lamp fixture having a lamp, the lamp being electrically connected to an igniter, wherein the off-board controller supplies power to the lamp at the idle output level, wherein the onboard transfer circuit permits the off-board power supply to be disconnected while the onboard controller unit maintains the lamp at the idle output level, wherein the onboard current regulator limits the amount of current to the lamp when the onboard relay is in the idle output power setting, and wherein the onboard timing circuit limits the time that the lamp remains at the high output level following receipt of a trigger pulse.

10. The vehicle testing lamp system of claim 9, the lamp comprising a long arc xenon lamp.

11. The vehicle testing lamp system of claim 9, the lamp comprising a nearly circular bulb and a power of between 5000 watts and 50,000 watts.

12. The vehicle testing lamp system of claim 9, the lamp comprising a linear gantry light, the gantry light having a power between 100,000 watts and 800,000 watts.

13. The vehicle testing lamp system of claim 9, the ignitor being closed in a Faraday cage.

14. The vehicle testing lamp system of claim 9, the lamp fixture further comprising a shock mount, the lamp being positioned within the shock mount.

15. The vehicle testing lamp system of claim 14, the shock mount comprising a first shock ring, a second shock ring, and a plurality of springs, the first shock ring encircling a first end of the lamp and the second shock ring encircling a second end of the lamp, wherein at least three of the plurality of springs position the first end of the lamp essentially centrally within the first shock ring and at least three of the plurality of springs position the second end of the lamp essentially centrally within the second shock ring.

16. The vehicle testing lamp system of claim 14, the shock mount comprising a heat-resistant elastomer.

17. The vehicle testing lamp system of claim 14 wherein the ratio of lumens output to kilogram mass of the onboard controller unit and the lamp fixture is greater than 5500.

18. The vehicle testing lamp system of claim 9, the lamp having negative pressure inside the lamp bulb such that the lamp does not explode upon failure.

19. The vehicle testing lamp system of claim 9, the lamp having a constant color temperature between 5000 and 6000 Kelvin.

20. The vehicle testing lamp system of claim 9 further comprising:

(a) a plurality of off-board power supplies;

(b) a plurality of onboard controller units;

(c) a plurality of lamp fixtures, wherein one lamp fixture is connected to one onboard controller unit; and

(d) means for transmitting electrical power from the plurality of off-board power supplies to the plurality of onboard controller units for operating the plurality of lamp fixtures.

21. A lamp for use in a lighting system for high speed image capture, the lamp comprising a long arc xenon lamp positioned within a light fixture by means for isolating the long arc xenon lamp from the shock of collision in vehicle safety testing, the isolating means comprising a first shock rind, a second shock ring, and a plurality of springs, the first shock ring encircling a first end of the long arc xenon lamp and the second shock ring encircling a second end of the long arc xenon lamp, wherein at least three of the plurality of springs position the first end of the long arc xenon lamp centrally within the first shock ring and at least three of the plurality of springs position the second end of the long arc xenon lamp centrally within the second shock ring.

22. A method for lighting a subject for high speed image capture, the method comprising the steps of

(a) providing a system comprising;

(i) an onboard controller unit comprising an onboard solid state relay, the onboard solid state relay being switchable between an idle output power setting and a high output power setting;

an onboard timing circuit;

an onboard transfer circuit;

an onboard current sensor;

an onboard current regulator; and

an auxiliary power supply, the auxiliary power supply providing electrical power to the onboard solid state relay, onboard timing circuit, onboard transfer circuit, onboard current sensor, and onboard current regulator;

wherein the onboard solid state relay, onboard timing circuit, onboard transfer circuit, onboard current sensor, onboard current regulator, and auxiliary power supply are electrically connected;

(ii) an off-board controller unit comprising an off-board power supply, electrically connected to an off-board voltage booster circuit; and

(iii) a lamp fixture comprising an ignitor, the ignitor being closed in a Faraday cage; and

a lamp, the lamp being electrically connected to the igniter;

wherein the off-board controller supplies power to the lamp at its low (idle) output level, wherein the onboard transfer circuit permits the off-board power supply to be disconnected while the onboard controller unit maintains the lamp at idle, and wherein the onboard timing circuit limits the time that the lamp remains at high output;

(b) igniting the lamp by the steps of;

(i) applying a 25,000 V pulse to the lamp by the combination of the off-board power supply and the onboard ignitor;

(ii) applying a boost voltage to the lamp, the boost voltage being approximately 300V and being supplied by the off-board controller unit;

(iii) applying a current pulse to the lamp, the current pulse being from a large capacitance source in the off-board controller unit; and

(iv) applying a stabilizing current of about 36 A to the lamp by the off-board controller unit, the stabilizing current lasting for approximately three seconds;

(c) supplying idle power to the lamp at an idle output level by the off-board controller unit;

(d) disconnecting the off-board controller unit from the onboard controller unit by way of the onboard transfer circuit, the onboard transfer circuit allowing the off-board power supply to be disconnected while the onboard controller unit maintains the lamp at idle;

(e) powering the onboard controller unit by way of the auxiliary power supply;

(f) receiving a trigger pulse by the onboard timing circuit to signal the lamp to go to high output level, onboard timing circuit limiting the time that the lamp remains at high output;

(g) signaling the onboard solid state relay to supply high output power to the lamp, the lamp thereby lighting the subject; and

(h) returning the lamp to idle after a prescribed lamp flash time.

23. The method of claim 22, further comprising the step of recharging the auxiliary power supply following returning the lamp to idle after a prescribed lamp flash time.