U.S. patent application number 11/548542 was filed with the patent office on 2008-04-17 for auxiliary lighting system for vehicles.
This patent application is currently assigned to INTERNATIONAL TRUCK INTELLECTUAL PROPERTY COMPANY, LLC. Invention is credited to Joseph A. Bell, Matthew J. T. Gumbel, Scott T. Hepler.
Application Number | 20080088185 11/548542 |
Document ID | / |
Family ID | 39263484 |
Filed Date | 2008-04-17 |
United States Patent
Application |
20080088185 |
Kind Code |
A1 |
Bell; Joseph A. ; et
al. |
April 17, 2008 |
AUXILIARY LIGHTING SYSTEM FOR VEHICLES
Abstract
A vehicle lighting system has primary and auxiliary systems,
which operate exclusively depending upon the selected operational
mode. The problem addressed is availability of civilian vehicles
for alternative operations including military operations, where the
conventional lighting system cannot be used. The control
arrangement mimics contemporary military systems, while meeting all
military requirements.
Inventors: |
Bell; Joseph A.; (Markle,
IN) ; Gumbel; Matthew J. T.; (Fort Wayne, IN)
; Hepler; Scott T.; (Spencerville, IN) |
Correspondence
Address: |
INTERNATIONAL TRUCK INTELLECTUAL PROPERTY COMPANY,
4201 WINFIELD ROAD, P.O. BOX 1488
WARRENVILLE
IL
60555
US
|
Assignee: |
INTERNATIONAL TRUCK INTELLECTUAL
PROPERTY COMPANY, LLC
Warrenville
IL
|
Family ID: |
39263484 |
Appl. No.: |
11/548542 |
Filed: |
October 11, 2006 |
Current U.S.
Class: |
307/117 |
Current CPC
Class: |
B60Q 1/26 20130101; B60Q
1/18 20130101; B60Q 1/143 20130101 |
Class at
Publication: |
307/117 |
International
Class: |
H01H 47/26 20060101
H01H047/26 |
Claims
1. A vehicle comprising: a plurality of lamps some of which are
operable as part of a primary lighting system and some of which are
operable as part of an auxiliary lighting system; a system
controller having a plurality of lamp energization ports connected
to lamps of the primary lighting system; an auxiliary controller
having a plurality of lamp energization ports connected to lamps of
the auxiliary lighting system; control inputs into the system
controller for actuating individual lamps of both the primary
lighting system and the auxiliary lighting system and including a
mode switch for selecting an operational mode in which the lamps of
the primary lighting system work exclusively to those in the
auxiliary lighting system work, or vice versa; and the mode switch
being energized by the auxiliary controller.
2. A vehicle as claimed in claim 1, further comprising; a
confirmation switch connected between a source of power and the
auxiliary controller; and any change of mode between auxiliary and
primary operation indicated by a change in the mode switch
requiring operation of the confirmation switch for execution.
3. A vehicle as claimed in claim 2, further comprising: a two-way
communication link between the primary controller and the auxiliary
controller; and the auxiliary controller providing a signal to the
primary controller over the two- way communication link for
indicating operation of the confirmation switch; and the primary
controller providing signals to the auxiliary controller over the
two- way communication link responsive to control inputs for
requesting operation of particular lamps in the auxiliary lighting
system when the system is in auxiliary operation mode.
4. A vehicle as claimed in claim 3, wherein the auxiliary lighting
system is a black out lighting system.
5. A vehicle as claimed in claim 4, further comprising: relays
responsive to control outputs from the auxiliary controller for
operating lamps in the black out lighting system for supplying
power at a different voltage level to trailer electrical
connections.
6. A vehicle lighting system having first and second operational
modes, the vehicle lighting system comprising: a plurality of lamps
including a primary group of lamps operable in the first mode and
an auxiliary group of lamps operable in the second mode; mutually
exclusive primary and auxiliary sets of switches connected
respectively to energization circuits for the primary and auxiliary
groups of lamps; a mode select switch; a controller responsive to
control inputs and to a current operational mode and operationally
coupled to the primary and auxiliary sets of switches for turning
on and off switches in a particular set, the controller being
further connected to the mode select switch and responsive thereto
for selecting which of the primary and auxiliary sets of switches
is active; and a confirmation switch connected to become active in
response to actuation of the mode select switch, the controller
being further responsive to the confirmation switch before changing
operational modes.
7. A vehicle lighting system having first and second operational
modes as set forth in claim 6, the vehicle lighting system further
comprising: a remote power module connected to communicate with the
controller over a communication link, a plurality of the switches,
including all of the switches of the auxiliary set, being located
on the remote power module; the confirmation switch being connected
between a power source and the remote power module, which indicates
to the controller operation of the confirmation switch; and the
remote power module being connected to supply power to the mode
select switch.
8. A vehicle lighting system having first and second operational
modes as set forth in claim 7, the vehicle lighting system further
comprising: a power level switching relay connected to one of the
switches associated with the auxiliary set of switches.
9. A vehicle lighting system having first and second operational
modes as set forth in claim 9, wherein the auxiliary group of lamps
are black out system lamps.
10. A vehicle lighting system having first and second operational
modes as set forth in claim 9, the vehicle lighting system further
comprising: a plurality of lamps operable in either the first or
second operational modes.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Technical Field
[0002] The present invention relates to vehicle lighting systems
and more particularly to providing both civilian and military style
black-out lighting systems on a vehicle.
[0003] 2. Description of the Problem
[0004] U.S. Pat. No. 6,272,402, which is assigned to the assignee
of the present application, described an electrical control system
for a vehicle having a plurality of electrical loads. Generic
controllers, termed in the patent "remote interface modules", were
provided for the control and energization of non-standard devices
installed on the vehicle, such as motors driving pumps for
hydraulic lifts. An electronic system controller (ESC) managed the
remote interface modules over a serial communication link to
implement the specialized functionality. Each remote interface
module (RIM) was constructed as a standard component capable of
providing digital and analog outputs to devices attached to one or
more output ports on the module. The remote power modules employed
in the present application are closely related devices to the RIM
units described in the '402 patent.
[0005] Of interest here is equipping vehicles for both civilian
duty and alternative service, such as military use, where different
lighting systems are required. Military, some emergency and police
vehicles typically provide specialized lighting systems to meet the
requirements of the service to which they are put. Under some
circumstances it may be necessary to press civilian vehicles into
such specialized service, in which case, the ability of the vehicle
to at least mimic the required lighting system without modification
of the vehicle would be valuable.
[0006] The specialized lighting system of most interest is a
blackout lighting system conforming to NATO standards. Blackout
lighting provides minimal lighting allowing the vehicles to see and
be seen in convoy operation, to allow drivers to accurately set a
proscribed distance (keep station) between their vehicle and the
vehicle directly in front of them and to indicate brake engagement.
In addition, limited headlamps are provided in case a particular
vehicle is the lead vehicle of the convoy. For vehicles hauling
military type trailers, it may be required that the vehicle provide
power to the trailer at a different voltage than is used by the
vehicle.
SUMMARY OF THE INVENTION
[0007] According to the invention there is provided a dual mode
vehicle lighting system. The vehicle lighting system includes a
plurality of lamps divided among a primary lighting system and an
auxiliary lighting system. A primary system controller has a
plurality of lamp energization ports connected to lamps in the
primary lighting system. An auxiliary controller has a plurality of
lamp energization ports connected to lamps in the auxiliary
lighting system. Control inputs are provided to the primary system
controller for actuating individual lamps of both the primary
lighting system and the auxiliary lighting system. A mode switch
for selecting an operational mode is also connected to the primary
system controller. The modes are exclusive in that the lamps of the
primary lighting system work exclusively to those in the auxiliary
lighting system in the primary mode and vice versa for the
auxiliary mode. The mode switch is connected to be energized by the
auxiliary controller which is active even when the ignition is off.
A confirmation switch is connected between a source of power and
the auxiliary controller. Any change of mode between auxiliary and
primary operation indicated by operation of the mode switch
requires operation of the confirmation switch. A two-way
communication link is provided between the primary controller and
the auxiliary controller. The auxiliary controller provides a
signal to the primary controller over the two-way communication
link indicating operation of the confirmation switch. The primary
controller provides signals to the auxiliary controller over the
two-way communication link responsive to control inputs requesting
operation of particular lamps in the auxiliary lighting system when
the system is in auxiliary operation mode.
[0008] Additional effects, features and advantages will be apparent
in the written description that follows.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The novel features believed characteristic of the invention
are set forth in the appended claims. The invention itself however,
as well as a preferred mode of use, further objects and advantages
thereof, will best be understood by reference to the following
detailed description of an illustrative embodiment when read in
conjunction with the accompanying drawings, wherein:
[0010] FIG. 1 is a perspective view in partial cutaway of truck
tractor equipped with dual lighting systems.
[0011] FIG. 2 is a high level schematic illustration of an
electrical control system for a motor vehicle.
[0012] FIG. 3 is a high level schematic of control arrangement for
dual light systems for a motor vehicle.
DETAILED DESCRIPTION OF THE INVENTION
[0013] Referring to the drawings, FIG. 1 is a perspective view of a
vehicle electrical system 10 installed on a vehicle 11. Vehicle
electrical system 10 is based on an electronic system controller
(ESC) 30, a first controller area network bus 18 and a second
controller area network bus 19. ESC 30 communicates with vocational
controllers disposed on vehicle 11, which include a gauge cluster
14, an engine controller 20, a transmission controller 16, an
auxiliary instrument and switch bank 12, and an antilock brake
system (ABS) controller 102, all of which are connected to the
first CAN bus 18 and a remote power module 40 connected to the
second, proprietary CAN bus 19. Remote power module 40 is similar
in concept to the remote interface module described in the '402
patent described above, but the vehicle electrical architecture
places it on CAN bus 19 rather than a public bus. ESC 30 operates
as a bridge between the busses 18, 19. There are special
circumstances when signals generated by a vocational controller
have relevance to the operation of the RPM 40, for example, the
activation of back up lights in response to indication from the
transmission controller 16 that "reverse" has been selected. RPM 40
provides electrical power for black out lights 24, 27, 29. Both
busses are serial data links, based on a twisted pair cable and
operated in accordance with SAE standard J1939.
[0014] Gauge cluster 14, transmission controller 16 and engine
controller 20 all communicate with electronic system controller 30,
which also monitors inputs received from the auxiliary instrument
and switch bank 12, over bus 18. Electronic system controller 30 is
programmed to execute requests from these controllers, including
requests for lighting from the gauge cluster 14 and transmission
controller 16. Normal or primary lighting system functions include
operation of the headlights 26 (including hi-beam, low-beam, flash
to pass and daytime-running light operation). Additional elements
of the conventional, civilian lighting systems (and related
components) include running lights 21, reverse lights, brake
lights, turn signals, 4-way flashers, air and electric horns 203,
fog lights, work lights, a dome light (automatic switch) and
trailer lighting relays (grouped conventional lights-first group
211 and horn 203). In blackout or auxiliary lighting system
operation many of the elements of the primary lighting system are
disabled. A few lights of the primary system operate in black out
operation, including panel illumination in response to the
headlight switch being in the park or headlight position (as
indicated by the gauge controller 14), switch pack green ON
indicators, cluster warning lights and the dome light when
activated using a manual switch (conventional lights-second group
213). The requests for these lights can come from various sources,
typically switches connected to the ESC 30 or gauge controller 14.
In the case of the cluster lights the control signals come from the
engine controller 20. In addition, a brake pedal position
indicating switch connected to the ESC 30 provides a request signal
for brake lights.
[0015] FIG. 2 is a high level schematic illustration of a system
network 70 implemented within vehicle electrical system 10. System
network 70 includes a microprocessor 72 based electrical system
controller (ESC) 30. Microprocessor 72 executes programs stored in
memory 74 and the program selected for execution can depend upon
external inputs. Memory 74 is constructed in a conventional manner
and includes volatile and non-volatile sections, the latter of
which is preferably fabricated from flash technology electrically
erasable programmable read-only memory (EEPROM). A network
interface 73 implements J1939 communications over the serial
communication links (i.e. CAN busses 18, 19).
[0016] RPM 40 comprises a J1939 interface link 50. RPM 40 further
includes a micro-controller 71 which can, under the direction of
appropriate inputs mimic various circuit and logic elements, such
as oscillators, buffers, analog to digital converters, feed back
loops, et cetera. Here however micro-controller 52 has the simpler
task of providing switching signals for turning on and off a set of
six output ports 54A-F by controlling the conductive state of six
FET switches 60A-F. J1939 link 50 handles communications tasks
defined by the J1939 standard over private CAN bus 19. ESC 30
determines output states for RPM based on inputs from the ESC 30
and an activation switch 200.
[0017] Referring more particularly to FIG. 3, a preferred
embodiment of the invention adapted to provide military style black
out lighting control is described. An electrical system controller
(ESC) 30 receives conventional light requests, typically over the
public J1939 bus 18, from a number of sources, including
particularly the gauge controller/cluster 14 and the transmission
controller 16. The transmission controller 16 provides status
signals indicating a selection of a gear. An indication that the
transmission is in reverse is treated as a request for illumination
of back-up lights 226. The requests for lights (including signals
treated as a request for lights) coming over the public J1939 bus
18 and other direct inputs to ESC 30 are grouped as "Light
Requests" and shown as an input into ESC 30. These inputs may be
taken as including requests for the horn 203. In addition, requests
may come from other sources, such as a brake pedal position switch
directly to the ESC 30. Operation of lights may be contingent on
the position of the ignition switch IGN in one of four positions:
OFF, ON, start or crank indicated over two inputs to the ESC 30.
ESC 30 includes FET switches by which the horn 203, and the first
and second groups of conventional lights 211, 213 are
activated.
[0018] RPM 40 provides electrical signals for the illumination of
black out drive lights 24, black out marker lights 27 and black out
stop lights 29. In addition, it provides power to a black out
control switch pack 205 and the activation signal for the
conventional back up lights 226. Finally, one output from RPM 40 is
illustrated as used for a power take off application to emphasize
that the RPM 40 is still available up to the limit of its pin
outputs for application to other tasks. The black out rear marker
lights 27 and black out stop lights 29 will be duplicated on any
trailer that vehicle 11 is used to tow and accordingly the
activation signals for these lights are used to power relays 227
and 229, respectively, for connecting a 24 volt power supply 240 to
trailer sockets 228 and 230, which are in turn connected to the
appropriate lights mounted on a trailer. Relays are used because it
is anticipated that vehicle 11 will operate on a conventional
civilian 12 volt system for lighting, while the trailer will use 24
volts. The vehicle is equipped with a parallel 24 volt power supply
240 to enable this feature if needed. No trailer socket is needed
for black out drive lights 24 since drive lights are unlikely to
ever be needed on a towed trailer.
[0019] It is a requirement of the system that it be able to enter
military mode without moving the ignition IGN from its off
position. RPM 40 is energized even when the ignition IGN is in its
off position. Upon moving the civilian to military bistable toggle
switch 209 in switch pack 205 to "off" or "military", a signal is
raised on the ESC 30 over a J1708 bus 219. This signal requires
confirmation. The confirmation signal source is a confirmation
switch 200 which includes a switch 261 and an indication light
emitting diode 262. Basically, LED 262 is connected by a current
limiting protection element 202 to battery and to an input of ESC
30. In response to a request for military mode received over the
J1708 bus 219, the pin to which LED 262 is connected on ESC 30 is
pulled low and the LED begins to glow. This is a signal to confirm
the request by closing switch 261, which provides an
enable/confirmation signal to RPM 40. RPM 40 in turn notifies ESC
30 of receipt of the confirmation signal over J1939 private bus 19.
In response ESC 30 disables activation of the conventional lighting
system of the first group 211 and the horn 203. Confirmation may
also be required to switch out of military mode back to civilian
mode. In civilian mode the black out lights do not operate. The
confirmation switch 261 is active for a limited period after
operation of one of the switches of switch pack 205.
[0020] The lights in the black out group controlled by RPM 40 fall
into two groups, those activated automatically by driver actions,
i.e. the black out stop lights 29, and those activated by
deliberate driver action, i.e. the black out marker lights 27 and
the black out drive lights 24. Switches 220 and 207 are provided in
switch pack 205 to provide control over the black out marker lights
27 and the black out drive lights 24, respectively. Black out stop
lights are activated by RPM 40 in response to a request received by
the RPM 40 received over J1939 private bus 19 from ESC 30, which is
generated there in response to a brake position signal. Similarly,
ESC 30 provides commands for illumination of drive and marker
lights based on signal states it receives over the J1708 bus based
on the positions of switches 220 and 207, respectively. Operation
of the selectable black out lights, i.e. the drive and marker
lights, requires use of the confirmation switch 261 as set out
above before the operation is carried out. The confirmation switch
effectively operates as the "enter" switch in military style
lighting control arrangements.
[0021] Back up lights 226 are the vehicle's conventional, civilian
style lights, activated in response to operation of the
transmission and request from the transmission controller passed by
the ESC 30 to the J1939 private bus 19. In military mode ESC 30
simply stops passing on the requests and the back up lights are not
activated in response to transmission operation. The back up lights
226 are operated from the RPM 30 because in the assignee's
conventional truck designs these lights were actuated in response
to transmission status signals from the transmission controller. In
the preferred embodiment of the present invention RPM 40 had an
open output pin while ESC 30 had none available for lights. It was
a simple matter to adapt the confirmation signal of brake light
operation from the transmission controller to the ESC as a private
back up light request signal, which could be bridged by the ESC 30
to the J1939 private bus 19 for operation on by the RPM 40.
[0022] The invention provides a greatly simplified black out
lighting system installed as an auxiliary lighting system on a
conventional vehicle. Effective disablement of the system may be
effected by removal of the switch pack 205 from the vehicle. The
civilian military toggle 209 may be implemented as a key switch to
prevent capricious use of the system.
[0023] While the invention is shown in only one of its forms, it is
not thus limited but is susceptible to various changes and
modifications without departing from the spirit and scope of the
invention.
* * * * *