Syrus Alerting Drivers Carrying Heavy Loads

# This script snippet uses ECU data and geofence information to send an audio message to the driver
# with recommended speed and RPMs depending on how much weight the vehicle is carrying

# It is intended for mining operations where the vehicle is carrying a lot of weight up and down the mines
# In these scenarios there are no posted speed limits so the drivers have to be notified how fast they can travel
# So we use the Syrus + Bluetooth Speaker to notify the driver

# The result of the snippet is a voice that alerts the driver, like so:
# "The next 3 kilometers have a positive inclination with curves, it's recommended to maintain below the speed of 50 kilometers per hour and 1600 RPMs"

# The ECU values that are used are the speed, rpms and weights:
# speed:   fef1_2-3: 28.02
# rpms:    f004_4-5: 602
# weights: fe70_3-4: 38620

# The geofences have 2 groups
# 1. for the geofences that have curves (with a speed limit that indicates if it's traveling uphill or downhill)
# 2. for the geofenecs that are plain (without a speed limit)

# This script snippet is shown as a proof of concept for the capabilities of Syrusjs and is not intended to be used yet in a real-life scenario

define group tracking

# For debugging purposes we could define CV## counters and assign the variables
define fieldset default fields=$io,$gnss,$net,$ecu

# initialize the weight
# Since the ecu weights varies a lot depending on the road conditions, it's recommended to capture this value while the vehicle is standing still
# We may want to also consider outside specific geofences when the truck is not being loaded for example
# For now we will define a duration while the Engine Speed reads 0km/h for at least 10 seconds
set variable var_weight 0

define signal sg_idle min_duration=10sec $ecu.fef1_2-3 = 0

define action ac_set_weight trigger=sg_idle
    set variable var_weight $ecu.fe70_3-4

# Signal with ECU value > 3500.0kg
define signal sg_high_weight $variables.var_weight > 35000

# Default allowed_rpms & allowed_speed
set variable var_allowed_rpms 2000
set variable var_allowed_speed 60

# if the high weight signal is fired then set the rpms and speed allowed
define action ac_high_weight_set trigger=sg_high_weight
    set variable var_allowed_rpms 1600
    set variable var_allowed_speed 50

# define geofence with a low speed limit to determine if uphill or downhill
# added the group=curves and the speed_limit with angles
define geofence curved_zone_112777 group=curves speed_limits="uphill,10,271,89 downhill,10,91,269" -69.07372,-24.28229 -69.07387,-24.28239 -69.07269,-24.28377 -69.07171,-24.28432 -69.07164,-24.2842 -69.07372,-24.28229
define geofence plain_zone_112810 group=plain -69.06338,-24.28559 -69.06005,-24.28205 -69.06092,-24.28146 -69.06439,-24.2849 -69.06338,-24.28559

# road_conditions & inclination
set variable var_road_condition "--"
set variable var_inclination "--"
set variable var_geo_dist 0

# If entered group with plain conditions set inclination and road_condition
define signal sg_entered_plain min_duration=2sec $geofences.$groups.plain.inside
define action ac_road_condition trigger=sg_entered_plain
    set variable var_road_condition "without curves"
    set variable var_inclination "plain"
    set variable var_allowed_rpms 2000
    set variable var_allowed_speed 50

# If entered group then set the road condition
define signal sg_entered_curves min_duration=2sec $geofences.$groups.curves.inside
define action ac_road_condition trigger=sg_entered_curves
    set variable var_road_condition "with curves"

# If entered geofence at a low speed then based on the angle we determine if it's uphill or downhill
define action ac_entered_positive trigger=@geofences.*.*.uphill.speeding
    set variable var_inclination "positive"

define action ac_entered_negative trigger=@geofences.*.*.downhill.speeding
    set variable var_inclination "negative"

# If entered specific geofence set the distance
# We can also consider setting the allowed speed and rpms in the scenario that the vehicle enters a specific geofence
define signal sg_entered_zone_112777 min_duration=2sec $geofences.curved_zone_112777.inside
    set variable var_geo_dist 3
define signal sg_entered_zone_112810 min_duration=2sec $geofences.plain_zone_112810.inside
    set variable var_geo_dist 5

# Any speeding with uphill or downhill inclination
define action ac_weighted_speed_in_curve trigger=@geofences.*.*.*.speeding
    send event ev_message
    speak "The next {{$variable.var_geo_dist}} kilometers have a {{$variable.var_inclination}} inclination {{$variables.var_road_condition}}, it's recommended to maintain below the speed of {{$variables.var_allowed_speed}} kilometers per hour and {{$variables.var_allowed_rpms}} R.P.Ms.."

# Entered plain zone
define action ac_weighted_speed_in_plain trigger=sg_entered_plain
    send event ev_message
    speak "The next {{$variable.var_geo_dist}} kilometers are {{$variable.var_inclination}} {{$variables.var_road_condition}}, it's recommended to maintain below the speed of {{$variables.var_allowed_speed}} kilometers per hour and {{$variables.var_allowed_rpms}} R.P.Ms.."

# Speed > allowed_value
define signal sg_speeding $ecu.fef1_2-3 > $variables.var_allowed_speed
    send event ev_speeding
    speak "It is recommended to reduce the speed to less than {{$variables.var_allowed_speed}} kilometers per hour."
# RPMs > allowed_value
define signal sg_overrpm $ecu.f004_4-5 > $variables.var_allowed_rpms
    send event ev_overrpm
    speak "It is recommended to reduce the R.P.Ms. to less than {{$variables.var_allowed_rpms}}."

define event ev_message group=tracking fieldset=default ack=seq label=message
define event ev_speeding group=tracking fieldset=default ack=seq label=spd
define event ev_overrpm group=tracking fieldset=default ack=seq label=overrpm