3_modern Lighting 3.pptx.pdf
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- Words: 2,165
- Pages: 7
2/7/18
Adap+ve front ligh+ng
Adap+ve ligh+ng FULLY ADAPTIVE HEADLAMP SYSTEM -front SYSTEM ARCHITECTURE SENSING
AFS In this kind of architecture, it is compulsory to have a match between the camera and the software for image processing.
ADVANCED FRONT LIGHTING SYSTEMS - STATIC BEND LIGHTING Dr. Devender Kumar, MED, Thapar University, Pa+ala
• • •
Source: Yole/Nvidia
1
PROCESSING
(Stereo) Caméra
Steering Wheel-Angle
XX
Yaw-Rate
Sensor Fusion
Town Light LIDAR XX Light XX Motorway Adverse weather light XX Light Sensor Vehicule Speed
XX
ACTUATION
Compute Optimal light distribution Dr. Devender Kumar, MED, Thapar University, Pa+ala
Actuation of Light Module
XX 2 ©2016 | www.yole.fr | Automotive Lighting 2016 - Sample
16
• Static bend lighting consists in activating cornering complementary lights in intersections, narrow corners, entry gateways etc...
• This additional beam can cover angles up to 90° from the axis of the vehicle, lighting crossing areas etc…
AFS head lamp control [1]
• The activation is accomplished by operating a winker or as a function of the speed or steering of the vehicle.
tic bend ting provides additional ner beam in tain driving uations.
AFS head lamp control [4]
Dr. Devender Kumar, MED, Thapar University, Pa+ala
3
Illustration of Static Bend Lighting Source: Hella ©2016 | www.yole.fr | Automotive Lighting 2016 - Sample
incoherent light sources :
Dr. Devender Kumar, MED, Thapar University, Pa+ala
4
14
Automotive – Light sources (head lights)
1
2/7/18
Signaling lamps • Tail Lamps • Turn signal lamps • Parking lamps • Space lamps • Reverse gear lamp/s • Hazard warning lamps
Dr. Devender Kumar, MED, Thapar University, Pa+ala
Dr. Devender Kumar, MED, Thapar University, Pa+ala
5
Signal Lamps
6
LED’s in signal lamps BeQer visibility Low power consump+on No fading of colour due to sun or heat Greater design flexibility to give signature look Can be programmed to use as adap+ve lights Instant glow give sufficient reac+on +me for following vehicles • Immediate response by two-‐tenths of a second faster than a conven+onal incandescent lamp reduces the stopping distance of following vehicle by 6 m, at a speed of 100 km/h. • • • • • •
Dr. Devender Kumar, MED, Thapar University, Pa+ala
7
Dr. Devender Kumar, MED, Thapar University, Pa+ala
8
© M S Ramaiah School of Advanced Studies
2
2/7/18
Standards for Vehicle Signal Lamps • Angle of visibility for direction indicators (ECE /FMVSS 108)
Standards for turn signal lamps
Space Lamps
Now a days Space Lamps are also used as DRL’s Dr. Devender Kumar, MED, Thapar University, Pa+ala
9
Dr. Devender Kumar, MED, Thapar University, Pa+ala
10
© M S Ramaiah School of Advanced Studies
Adaptive Rear lamps
Adap+ve tail lights
• These systems adapt to changing road conditions and different weather situations. Tail Light Illumination Adaptation
Signal lamps • Tail lamps
Tail "off"
Tail "Night"
Tail "Day"
Brake Force Display
LED Tail Lights © M S Ramaiah School of Advanced Studies
“Normal" braking
"Strong" braking
Dr. Devender Kumar, MED, Thapar
© M S Ramaiah School ofPAdvanced Studies University, a+ala
"Emergency" Braking 11
Dr. Devender Kumar, MED, Thapar University, Pa+ala
12
3
2/7/18
Hella 3D adap+ve tail lights
Dr. Devender Kumar, MED, Thapar University, Pa+ala
13
OLED signal lamps
Dr. Devender Kumar, MED, Thapar University, Pa+ala
14
Dr. Devender Kumar, MED, Thapar University, Pa+ala
16
OLED
Organic Light Emihng Display BMW OLED: hQps://www.youtube.com/watch?v=yOFkJyJgYgA AUDI OLED hQps://www.youtube.com/watch?v=MiM4_t5Y-‐hk AUDI OLED Concept ‘The Swarm’ hQps://www.youtube.com/watch?v=UlrDkHoH1_I
Dr. Devender Kumar, MED, Thapar University, Pa+ala
15
4
2/7/18
Fiber Op+c Lights One end of the fiber op+c is illuminated with LED hQps://www.youtube.com/watch?v=alGgTrRmZk8 hQps://www.youtube.com/watch?v=JCiCERB3sNU hQps://www.youtube.com/watch?v=lijy2n_kvlw Automatic Headlight Dimming
Fiber Optics
Fiber Optics
Shop Manualof light through Fiber optics is the transmission polymethyl methacrylate that keeps the methacrylate plastic that keeps the Fiber optics is the transmission of plastic light through polymethyl 12, light rays parallel evenChapter if extreme bends arelight in the plastic. Th e invention ofbends fiber optics hasplastic. madeThe invention of fiber optics has made rays parallel even if extreme are in the 511 it possible to by provide illumination of several by a single light source (Figure 12-25). it possible to providepage illumination of several objects a single light source (Figureobjects 12-25). Dr. Devender Kumar, MED, Thapar strands are used to transmit light from the source to the object to be illumiPlastic fiber-optic Plastic fiber-optic strands are usedUniversity, to transmit light from the source to the object to be illumi- 17 Pa+ala nated. The strands of plastic are sheathed by a polymer that insulates the light rays as they travel nated. The strands of plastic are sheathed by a polymer that insulates the light rays as they travel within the strands. The light rays travel through the strands by means of internal reflections. within the strands. The light rays travel through theoptics strands means ofused internal reflections. Fiber areby commonly as indicator lights to show the driver that certain lights are functioning. withthat fender-mounted Fiber optics are commonly used as indicator lights toMany showvehicles the driver certain lightsturn signal indicators use fiber optics from the turn signal light toindicators the indicator 12-26). The indicator will only show light if are functioning. Many vehicles with fender-mounted turn signal use(Figure fiber optics turn signal light is on and working properly. from the turn signal light to the indicatorthe (Figure 12-26). The indicator will only show light if the turn signal light is on and working properly. Glove box illumination
Glove box Fibers illumination
Panel Right side door key illumination
Sheath
Fibers
headlight beams. The relay also contains a clamping diode for electrical transient damping to
Ash tray illumination Light source
Core
Jacket
L/H door
Switch illumination
© Delmar/Cengage Learning
Dash illumination
© Delmar/Cengage Learning
Light source
Core
Jacket
FIGURE 12-25 One light source can illuminate several areas by using fiber optics.
Switch illumination
L/H door
Low beam indicator High beam indicator
Turn signal indicator
FIGURE 12-25 One light source can illuminate several areas by using fiber optics. Fiber optic conductors
Headlight
Low beam indicator
Turn signal indicator
Potentiometer
Fiber optic conductors
Headlight
Headlight connector
Dr. Devender Kumar, MED, Thapar 19 FIGURE 12-26 Fiber optics can be used to indicate the operation of University, Pa+ala exterior lights to the driver.
Headlight connector FIGURE 12-26 Fiber optics can be used to indicate the operation of exterior lights to the driver.
326
© Delmar/Cengage Learning
326
© Delmar/Cengage Learning
High beam indicator
protectdimming the photocell and amplifi er assembly. Modern automa+c headlight systems use solid-‐state circuitry and The dimmer switch is usually a flash-to-pass design. If the turn signal lever is pulled partelectromagne+c relays to control the beam switching. Automa+c headlight way up, the flash-to-pass relay is energized. The high beams will stay on as long as the lever dimming automa+cally switches headlights high beams beams is held in the this position, evenfrom if the headlights are offto . Inlow addition, the driver can select either low beams or automatic operation through dimmerstrikes switch. the under two different condi+ons: when light from oncom-‐ ing the vehicles Although components similarbin most systems,sthere arethe differences in system operaphotocell-‐amplifier or light from the tthe aillights of a vare ehicle eing passed trikes tions. Systems differ in how the manufacturer uses the relay to do the switching from high beams photocell-‐amplifier. Most systems consist of the following major components: 1. Light-‐sensi+ve photocell and amplifier unit. Spacer 2. High-‐low beam relay. 3. Sensi+vity control. 4. Dimmer switch. 5. Flash-‐to-‐pass relay. 6. Wiring harness.
© Delmar/Cengage Learning
Dash illumination
Author’s Note: Many vehicle manufacturers install the sensor-amplifier in the rearview mirror support.
Automa+c Headlight Dimming The high–low relay is a single-pole, double-throw unit that provides the switching of the
Panel Right side door key illumination
Ash tray illumination
Sheath
The photocell is like a variable resistor that uses light to change resistance.
Housing
© Delmar/Cengage Learning
Shop Manual Chapter 12, page 511
Modern automatic headlight dimming systems use solid-state circuitry and electromagnetic relays to control the beam switching. Automatic headlight dimming automatically switches the headlights from high beams to low beams under two different conditions: when light from oncoming vehicles strikes the photocell-amplifier or light from the taillights of a vehicle being passed strikes the photocell-amplifier. Most systems consist of the following major components: 1. Light-sensitive photocell and amplifier unit. 2. High-low beam relay. 3. Sensitivity control. 4. Dimmer switch. 5. Flash-to-pass relay. 6. Wiring harness. The photocell-amplifier is usually mounted behind the front grill, but ahead of the radiator. The sensitivity control sets the intensity level at which the photocell-amplifier will energize. This control is set by the driver and is located next to, or is a part of, the headlight switch assembly (Figure 12-9). The driver is able to adjust the sensitivity level of the system by rotating control knob. increase in the sensitivity level will18 make the headlights switch Dr. Dthe evender Kumar, MED, TAn hapar University, Pa+ala (approaching vehicle is farther away). A decrease in the sensitivity to the low beams sooner level will switch the headlights to low beams when the approaching vehicle is closer. If the knob is rotated to the full counterclockwise position, the system goes into manual override.
FIGURE 12-9 The driver sets the sensitivity of the automatic Dr. Devender Kumar, MED, Thapar headlight dimmer system by rotating the potentiometer 20 to University, Pchange a+ala resistance values. FIGURE 12-12 The SmartBeam auto headlight system uses a digital camera to determine oncoming light intensity.
The operation of SmartBeam requires interaction with several vehicle modules. Figure 12-13 shows how one system interacts between modules. Ambient light levels for automatic headlight operation are provided by the light rain sensor module (LRSM), if equipped. If the LRSM is not used on the vehicle, then the system will use a photocell located on top of the dash. The headlamp switch position is signaled by the lighting multifunction switch and is an input to the steering column module (SCM). The SCM sends switch position status over the data bus. The front control module (FCM) uses HSDs to provide power to the both low- and high-beam bulbs. The cabin compartment node (CCN) controls the operation of the high-beam indicator.
313
5
2/7/18
© Delmar/Cengage Learning
Many vehicles today use a computer-driven information center to keep the driver informed of the condition of monitored circuits (Figure 12-30). The vehicle information center usually receives its signals from the BCM (Figure 12-31). In this system, the lamp outage module is used to send signals to the BCM. The BCM will either illuminate a warning light,
FIGURE 12-30 The computer-driven vehicle information center keeps the driver aware of the condition of monitored systems.
Lamp Outage Indicator
Bus +
A lamp outage indicator circuit for sensing and indica+ng outage of remotely located lamps in a vehicle. The lamp outage indicator employs a semiconductor sensing device to sense the voltage excursion which occurs when a lamp burns out.
University, Pa+ala
PCM
Bus – Bus +
Many vehicles today use a computer-‐ driven informa+on center to keep the FIGURE 12-30 informed The computer-driven center of driver of vehicle the information condi+on keeps the driver aware of the condition of monitored systems. Bus + m o n i t o r e d c i r c u i t s . T h e v e h i c l e E.V.I.C. overhead console Bus – informa+on Bus + center usually receives its + – signals from Bus – the BCM. In this system, the lamp outage module is used to send signals to the BCM. The BCM will either illuminate a warning light, In this system, the lamp outage module is used to send signals to the BCM. The BCM will either BCM Lamp outage PCM – illuminate a warning lBus ight, module Dr. Devender Kumar, MED, Thapar FIGURE 12-31 The body computer can be used to receive signals22 from Bus + University, Pa+ala varies inputs and to give signals to control the information center. Time
Temp
Fuel
Econ
Info
Reset
9:45 AM TUE FEB 17
21
Time
Temp
Fuel
Econ
Info
Reset
© Delmar/Cengage Learning
For example: A flasher unit, which is designed for automo+ve use. It has a built-‐in func+on of lamp-‐outage detec+on. In normal opera+on, it will flash at about 1.4Hz and when a lamp goes bad, the flash-‐rate is doubled. The flashers faster clicking sound and the dashboard indicators faster flashing aQracts the drivers aQen+on that one of the bulbs has gone out. It all happens electronically. Dr. Devender Kumar, MED, Thapar
© Delmar/Cengage Learning
Bus –
329
9:45 AM TUE FEB 17
Bus + E.V.I.C. overhead console
Bus –
+
BMW
Interior Ligh+ng
–
Rolls Royce
Lamp outage module
© Delmar/Cengage Learning
Interior Ligh+ng
BCM
FIGURE 12-31 The body computer can be used to receive signals from varies inputs and to give signals to control the information center.
329
Dr. Devender Kumar, MED, Thapar University, Pa+ala
23
Dr. Devender Kumar, MED, Thapar University, Pa+ala
24
6
2/7/18
Drive Safely
with Awareness of technology Dr. Devender Kumar, MED, Thapar University, Pa+ala
25
Dr. Devender Kumar, MED, Thapar University, Pa+ala
26
7
Adap+ve front ligh+ng
Adap+ve ligh+ng FULLY ADAPTIVE HEADLAMP SYSTEM -front SYSTEM ARCHITECTURE SENSING
AFS In this kind of architecture, it is compulsory to have a match between the camera and the software for image processing.
ADVANCED FRONT LIGHTING SYSTEMS - STATIC BEND LIGHTING Dr. Devender Kumar, MED, Thapar University, Pa+ala
• • •
Source: Yole/Nvidia
1
PROCESSING
(Stereo) Caméra
Steering Wheel-Angle
XX
Yaw-Rate
Sensor Fusion
Town Light LIDAR XX Light XX Motorway Adverse weather light XX Light Sensor Vehicule Speed
XX
ACTUATION
Compute Optimal light distribution Dr. Devender Kumar, MED, Thapar University, Pa+ala
Actuation of Light Module
XX 2 ©2016 | www.yole.fr | Automotive Lighting 2016 - Sample
16
• Static bend lighting consists in activating cornering complementary lights in intersections, narrow corners, entry gateways etc...
• This additional beam can cover angles up to 90° from the axis of the vehicle, lighting crossing areas etc…
AFS head lamp control [1]
• The activation is accomplished by operating a winker or as a function of the speed or steering of the vehicle.
tic bend ting provides additional ner beam in tain driving uations.
AFS head lamp control [4]
Dr. Devender Kumar, MED, Thapar University, Pa+ala
3
Illustration of Static Bend Lighting Source: Hella ©2016 | www.yole.fr | Automotive Lighting 2016 - Sample
incoherent light sources :
Dr. Devender Kumar, MED, Thapar University, Pa+ala
4
14
Automotive – Light sources (head lights)
1
2/7/18
Signaling lamps • Tail Lamps • Turn signal lamps • Parking lamps • Space lamps • Reverse gear lamp/s • Hazard warning lamps
Dr. Devender Kumar, MED, Thapar University, Pa+ala
Dr. Devender Kumar, MED, Thapar University, Pa+ala
5
Signal Lamps
6
LED’s in signal lamps BeQer visibility Low power consump+on No fading of colour due to sun or heat Greater design flexibility to give signature look Can be programmed to use as adap+ve lights Instant glow give sufficient reac+on +me for following vehicles • Immediate response by two-‐tenths of a second faster than a conven+onal incandescent lamp reduces the stopping distance of following vehicle by 6 m, at a speed of 100 km/h. • • • • • •
Dr. Devender Kumar, MED, Thapar University, Pa+ala
7
Dr. Devender Kumar, MED, Thapar University, Pa+ala
8
© M S Ramaiah School of Advanced Studies
2
2/7/18
Standards for Vehicle Signal Lamps • Angle of visibility for direction indicators (ECE /FMVSS 108)
Standards for turn signal lamps
Space Lamps
Now a days Space Lamps are also used as DRL’s Dr. Devender Kumar, MED, Thapar University, Pa+ala
9
Dr. Devender Kumar, MED, Thapar University, Pa+ala
10
© M S Ramaiah School of Advanced Studies
Adaptive Rear lamps
Adap+ve tail lights
• These systems adapt to changing road conditions and different weather situations. Tail Light Illumination Adaptation
Signal lamps • Tail lamps
Tail "off"
Tail "Night"
Tail "Day"
Brake Force Display
LED Tail Lights © M S Ramaiah School of Advanced Studies
“Normal" braking
"Strong" braking
Dr. Devender Kumar, MED, Thapar
© M S Ramaiah School ofPAdvanced Studies University, a+ala
"Emergency" Braking 11
Dr. Devender Kumar, MED, Thapar University, Pa+ala
12
3
2/7/18
Hella 3D adap+ve tail lights
Dr. Devender Kumar, MED, Thapar University, Pa+ala
13
OLED signal lamps
Dr. Devender Kumar, MED, Thapar University, Pa+ala
14
Dr. Devender Kumar, MED, Thapar University, Pa+ala
16
OLED
Organic Light Emihng Display BMW OLED: hQps://www.youtube.com/watch?v=yOFkJyJgYgA AUDI OLED hQps://www.youtube.com/watch?v=MiM4_t5Y-‐hk AUDI OLED Concept ‘The Swarm’ hQps://www.youtube.com/watch?v=UlrDkHoH1_I
Dr. Devender Kumar, MED, Thapar University, Pa+ala
15
4
2/7/18
Fiber Op+c Lights One end of the fiber op+c is illuminated with LED hQps://www.youtube.com/watch?v=alGgTrRmZk8 hQps://www.youtube.com/watch?v=JCiCERB3sNU hQps://www.youtube.com/watch?v=lijy2n_kvlw Automatic Headlight Dimming
Fiber Optics
Fiber Optics
Shop Manualof light through Fiber optics is the transmission polymethyl methacrylate that keeps the methacrylate plastic that keeps the Fiber optics is the transmission of plastic light through polymethyl 12, light rays parallel evenChapter if extreme bends arelight in the plastic. Th e invention ofbends fiber optics hasplastic. madeThe invention of fiber optics has made rays parallel even if extreme are in the 511 it possible to by provide illumination of several by a single light source (Figure 12-25). it possible to providepage illumination of several objects a single light source (Figureobjects 12-25). Dr. Devender Kumar, MED, Thapar strands are used to transmit light from the source to the object to be illumiPlastic fiber-optic Plastic fiber-optic strands are usedUniversity, to transmit light from the source to the object to be illumi- 17 Pa+ala nated. The strands of plastic are sheathed by a polymer that insulates the light rays as they travel nated. The strands of plastic are sheathed by a polymer that insulates the light rays as they travel within the strands. The light rays travel through the strands by means of internal reflections. within the strands. The light rays travel through theoptics strands means ofused internal reflections. Fiber areby commonly as indicator lights to show the driver that certain lights are functioning. withthat fender-mounted Fiber optics are commonly used as indicator lights toMany showvehicles the driver certain lightsturn signal indicators use fiber optics from the turn signal light toindicators the indicator 12-26). The indicator will only show light if are functioning. Many vehicles with fender-mounted turn signal use(Figure fiber optics turn signal light is on and working properly. from the turn signal light to the indicatorthe (Figure 12-26). The indicator will only show light if the turn signal light is on and working properly. Glove box illumination
Glove box Fibers illumination
Panel Right side door key illumination
Sheath
Fibers
headlight beams. The relay also contains a clamping diode for electrical transient damping to
Ash tray illumination Light source
Core
Jacket
L/H door
Switch illumination
© Delmar/Cengage Learning
Dash illumination
© Delmar/Cengage Learning
Light source
Core
Jacket
FIGURE 12-25 One light source can illuminate several areas by using fiber optics.
Switch illumination
L/H door
Low beam indicator High beam indicator
Turn signal indicator
FIGURE 12-25 One light source can illuminate several areas by using fiber optics. Fiber optic conductors
Headlight
Low beam indicator
Turn signal indicator
Potentiometer
Fiber optic conductors
Headlight
Headlight connector
Dr. Devender Kumar, MED, Thapar 19 FIGURE 12-26 Fiber optics can be used to indicate the operation of University, Pa+ala exterior lights to the driver.
Headlight connector FIGURE 12-26 Fiber optics can be used to indicate the operation of exterior lights to the driver.
326
© Delmar/Cengage Learning
326
© Delmar/Cengage Learning
High beam indicator
protectdimming the photocell and amplifi er assembly. Modern automa+c headlight systems use solid-‐state circuitry and The dimmer switch is usually a flash-to-pass design. If the turn signal lever is pulled partelectromagne+c relays to control the beam switching. Automa+c headlight way up, the flash-to-pass relay is energized. The high beams will stay on as long as the lever dimming automa+cally switches headlights high beams beams is held in the this position, evenfrom if the headlights are offto . Inlow addition, the driver can select either low beams or automatic operation through dimmerstrikes switch. the under two different condi+ons: when light from oncom-‐ ing the vehicles Although components similarbin most systems,sthere arethe differences in system operaphotocell-‐amplifier or light from the tthe aillights of a vare ehicle eing passed trikes tions. Systems differ in how the manufacturer uses the relay to do the switching from high beams photocell-‐amplifier. Most systems consist of the following major components: 1. Light-‐sensi+ve photocell and amplifier unit. Spacer 2. High-‐low beam relay. 3. Sensi+vity control. 4. Dimmer switch. 5. Flash-‐to-‐pass relay. 6. Wiring harness.
© Delmar/Cengage Learning
Dash illumination
Author’s Note: Many vehicle manufacturers install the sensor-amplifier in the rearview mirror support.
Automa+c Headlight Dimming The high–low relay is a single-pole, double-throw unit that provides the switching of the
Panel Right side door key illumination
Ash tray illumination
Sheath
The photocell is like a variable resistor that uses light to change resistance.
Housing
© Delmar/Cengage Learning
Shop Manual Chapter 12, page 511
Modern automatic headlight dimming systems use solid-state circuitry and electromagnetic relays to control the beam switching. Automatic headlight dimming automatically switches the headlights from high beams to low beams under two different conditions: when light from oncoming vehicles strikes the photocell-amplifier or light from the taillights of a vehicle being passed strikes the photocell-amplifier. Most systems consist of the following major components: 1. Light-sensitive photocell and amplifier unit. 2. High-low beam relay. 3. Sensitivity control. 4. Dimmer switch. 5. Flash-to-pass relay. 6. Wiring harness. The photocell-amplifier is usually mounted behind the front grill, but ahead of the radiator. The sensitivity control sets the intensity level at which the photocell-amplifier will energize. This control is set by the driver and is located next to, or is a part of, the headlight switch assembly (Figure 12-9). The driver is able to adjust the sensitivity level of the system by rotating control knob. increase in the sensitivity level will18 make the headlights switch Dr. Dthe evender Kumar, MED, TAn hapar University, Pa+ala (approaching vehicle is farther away). A decrease in the sensitivity to the low beams sooner level will switch the headlights to low beams when the approaching vehicle is closer. If the knob is rotated to the full counterclockwise position, the system goes into manual override.
FIGURE 12-9 The driver sets the sensitivity of the automatic Dr. Devender Kumar, MED, Thapar headlight dimmer system by rotating the potentiometer 20 to University, Pchange a+ala resistance values. FIGURE 12-12 The SmartBeam auto headlight system uses a digital camera to determine oncoming light intensity.
The operation of SmartBeam requires interaction with several vehicle modules. Figure 12-13 shows how one system interacts between modules. Ambient light levels for automatic headlight operation are provided by the light rain sensor module (LRSM), if equipped. If the LRSM is not used on the vehicle, then the system will use a photocell located on top of the dash. The headlamp switch position is signaled by the lighting multifunction switch and is an input to the steering column module (SCM). The SCM sends switch position status over the data bus. The front control module (FCM) uses HSDs to provide power to the both low- and high-beam bulbs. The cabin compartment node (CCN) controls the operation of the high-beam indicator.
313
5
2/7/18
© Delmar/Cengage Learning
Many vehicles today use a computer-driven information center to keep the driver informed of the condition of monitored circuits (Figure 12-30). The vehicle information center usually receives its signals from the BCM (Figure 12-31). In this system, the lamp outage module is used to send signals to the BCM. The BCM will either illuminate a warning light,
FIGURE 12-30 The computer-driven vehicle information center keeps the driver aware of the condition of monitored systems.
Lamp Outage Indicator
Bus +
A lamp outage indicator circuit for sensing and indica+ng outage of remotely located lamps in a vehicle. The lamp outage indicator employs a semiconductor sensing device to sense the voltage excursion which occurs when a lamp burns out.
University, Pa+ala
PCM
Bus – Bus +
Many vehicles today use a computer-‐ driven informa+on center to keep the FIGURE 12-30 informed The computer-driven center of driver of vehicle the information condi+on keeps the driver aware of the condition of monitored systems. Bus + m o n i t o r e d c i r c u i t s . T h e v e h i c l e E.V.I.C. overhead console Bus – informa+on Bus + center usually receives its + – signals from Bus – the BCM. In this system, the lamp outage module is used to send signals to the BCM. The BCM will either illuminate a warning light, In this system, the lamp outage module is used to send signals to the BCM. The BCM will either BCM Lamp outage PCM – illuminate a warning lBus ight, module Dr. Devender Kumar, MED, Thapar FIGURE 12-31 The body computer can be used to receive signals22 from Bus + University, Pa+ala varies inputs and to give signals to control the information center. Time
Temp
Fuel
Econ
Info
Reset
9:45 AM TUE FEB 17
21
Time
Temp
Fuel
Econ
Info
Reset
© Delmar/Cengage Learning
For example: A flasher unit, which is designed for automo+ve use. It has a built-‐in func+on of lamp-‐outage detec+on. In normal opera+on, it will flash at about 1.4Hz and when a lamp goes bad, the flash-‐rate is doubled. The flashers faster clicking sound and the dashboard indicators faster flashing aQracts the drivers aQen+on that one of the bulbs has gone out. It all happens electronically. Dr. Devender Kumar, MED, Thapar
© Delmar/Cengage Learning
Bus –
329
9:45 AM TUE FEB 17
Bus + E.V.I.C. overhead console
Bus –
+
BMW
Interior Ligh+ng
–
Rolls Royce
Lamp outage module
© Delmar/Cengage Learning
Interior Ligh+ng
BCM
FIGURE 12-31 The body computer can be used to receive signals from varies inputs and to give signals to control the information center.
329
Dr. Devender Kumar, MED, Thapar University, Pa+ala
23
Dr. Devender Kumar, MED, Thapar University, Pa+ala
24
6
2/7/18
Drive Safely
with Awareness of technology Dr. Devender Kumar, MED, Thapar University, Pa+ala
25
Dr. Devender Kumar, MED, Thapar University, Pa+ala
26
7
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