INTELLIGENT DRIVE MASTER (i-DM)

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Purpose

Structural View

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System Wiring Diagram

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Function

Driving status

•  The i-DM control status signal indicates the driver's driving status which is determined by applying the estimated movement of the passenger, which is calculated by the PCM based on the wheel speed sensor signal from the DSC HU/CM and the steering angle signal from the EPS control module, to the driving determination map.

•  Based on the i-DM control status signal, the instrument cluster displays the driver's driving status as follows:

Intelligent drive master (i-DM) lamp *1	Driving status determination	Driving status display
Green lamp	Gentle driving which does not make passenger uncomfortable
Blue lamp	Smooth driving in which driver and passenger feel comfortable.
White lamp (steering or pedal operation)	•  Steering operation which makes passenger uncomfortable, driving which makes passenger body sway •  Accelerator or brake pedal operation which makes passenger uncomfortable, driving which makes passenger body sway

•  The following driving determination maps are recorded in the PCM.

Driving determination map	Determination target	Vehicle driving status
Driving determination map for longitudinal acceleration	Longitudinal direction	Start, acceleration start, acceleration end, deceleration start, deceleration end
Driving determination map for lateral acceleration	Lateral direction	Entering and exiting a corner
Driving determination map for maintained acceleration	Longitudinal direction	During acceleration and deceleration
	Lateral direction	During cornering

Determination for driving status when there is change in longitudinal acceleration/deceleration

•  The PCM determines the driving status by applying the oscillation range and the speed of movement of the passenger's body in the longitudinal direction, which is estimated according to the vehicle's longitudinal acceleration/deceleration (start, acceleration start, acceleration end, deceleration start, deceleration end), to the driving determination map for longitudinal acceleration.

•  The instrument cluster displays the determined driving status using the green, blue, and white lamps (pedal operation).

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Determination for driving status when there is change in lateral acceleration/deceleration

•  The PCM determines the driving status by applying the oscillation range and the speed of movement of the passenger's body in the lateral direction, which is estimated according to the vehicle's lateral acceleration/deceleration (entering and exiting a corner), to the driving determination map for lateral acceleration.

•  The instrument cluster displays the determined driving status using the green, blue, and white lamps (steering operation).

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Determination for driving status when longitudinal acceleration/deceleration is maintained

•  The PCM determines the driving status by applying the oscillation and travel distance of the passenger's body in the longitudinal direction, which is estimated during the acceleration/deceleration, to the driving determination map for maintained acceleration (longitudinal direction).

•  The instrument cluster displays the determined driving status using the green, blue, and white lamps (pedal operation).

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Determination for driving status when lateral acceleration/deceleration is maintained

•  The PCM determines the driving status by applying the oscillation and travel distance of the passenger's body in the lateral direction, which is estimated during cornering, to the driving determination map for maintained acceleration (lateral direction).

•  The instrument cluster displays the determined driving status using the green, blue, and white lamps (steering operation).

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•  The PCM determines the driver's driving status using the driving determination maps separately according to the vehicle's driving conditions.

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Driving diagnosis^*2

•  Based on the i-DM evaluation signal from the PCM, the instrument cluster displays the driver's driving evaluation result for one trip^*3 in the LCD (without center display) or the center display (with center display).

Without center display

•  The instrument cluster displays the following items:

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1.  Score for this trip

2.  Averages

3.  Stage

With center display

•  Different types of displays are shown in the center display; one is displayed when the driver selects the intelligent driver master (i-DM) display, and the other is displayed when the ignition is switched off. In addition, two types of display modes, simple or training mode, can be selected for each type of display. The display content for each type of display is as follows:

1.  Score for this trip

2.  Averages

3.  Stage

4.  Driver name

5.  Score transition

6.  Driving operation tendency (only in training mode)

7.  Informative pointers

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Score for this trip

•  Driving status determined by the control maps during one trip is determined comprehensively, and the driving diagnosis is displayed with a numeric score between 1.0 to 5.0.

―  If the driving period is less than 5 min and the frequency of changes in acceleration is less than the specified times, the score is displayed as <-->.

•  A higher number indicates better driving status.

•  The score for this trip is displayed for approx. 5 s right after the ignition is switched off (LOCK).

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Average

•  The cumulative average value of the previous ten averages is displayed as numeric value from 1.0 to 5.0. If there is no data for the previous ten averages, the average value of the cumulative data up to the current time is displayed between 1.0 to 5.0.

•  If there are no cumulative data, the average is displayed as <-->.

•  In the LCD, the average is displayed for approx. 5 s after the display of the score for this trip is finished.

•  In the center display, averages is display is displayed below the score for this trip.

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Stage

•  The stage indicates the level of the driving technique.

•  There are 3 stages, from 1 to 3, and it upgrades when the average is 4.75 or more for 5 times continuously, and downgrades when the average is 1.95 or less for 15 times continuously.

•  When the stage is changed, the score for this trip and average are reset.

•  The stage is displayed above the score for this trip.

•  The stages can be changed to 5 stages. Refer to INSTRUMENT CLUSTER PERSONALIZATION FEATURES SETTING PROCEDURE for the procedure to change the number of stages.

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Driver name (With center display)

•  For vehicles with the center display, up to five driver names can be programmed to the vehicle.

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•  The programmed driver's name can be used with the intelligent drive master (i-DM) and information such as stage and score information can be managed for each name. Refer to CENTER DISPLAY, INTELLIGENT DRIVE MASTER (i-DM) for the detail of driver name programming. (See CENTER DISPLAY [WITH CENTER DISPLAY].)

Score transition (With center display)

•  Score transition is displayed by a bar graph.

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•  Each bar indicates the score average per 1 min and bars indicating the past 10 min are displayed. The bar on the rightmost side is the latest score.

•  When there is no driving operation, such as while waiting at a traffic light or driving at a constant speed, bar for the period is not indicated.

Driving operation tendency (With center display)

•  The driving operation tendency for this trip is displayed.

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•  Steering, brake, and accelerator operations are displayed independently. The white gauge indicates a driving tendency for which makes passenger uncomfortable, and the blue gauge indicates a tendency for smooth driving.

Informative pointers (Training mode) (With center display)

•  The score for this trip and the average are compared and any of the following informative pointers is selected and displayed.

•  The informative pointers are displayed beside the score for this trip and average.

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Informative pointers display table

Operation

Driving status

1.  Based on the wheel speed sensor signal from the DSC HU/CM and the steering angle (estimated absolute steering angle) signal from the EPS control module, the PCM detects the vehicle movement while the vehicle is being driven and estimates the passenger's postural condition.

2.  The PCM applies the information of the estimated passenger's postural condition to the control map, and determines the driving status display.

3.  The PCM sends the driving status display to the instrument cluster and the CMU (vehicles with center display) as an i-DM control status signal.

4.  The instrument cluster turns the green, blue, and white lamps (pedal and steering operations) on based on the i-DM control status signal.

5.  The CMU displays the driving operation tendency based on the i-DM control status signal (only in training mode display).

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Driving diagnosis result

1.  Based on the driving status information, the PCM calculates the driving diagnosis result and sends the display content to the instrument cluster as an i-DM evaluation signal.

2.  Instrument clusters without the center display indicate the score for the current trip, the average, and the stage in the LCD based on the i-DM evaluation signal.

3.  Instrument clusters with the center display send the i-DM evaluation signal to the CMU.

4.  Based on the i-DM-related information signal, the CMU displays the following in the center display.

―  Score for this trip

―  Averages

―  Stage

―  Driver name

―  Score transition (only when driver selects intelligent drive master (i-DM) display)

―  Driving operation tendency (only in training mode)

―  Informative pointers

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