Difference between revisions of "Smart ignition"

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==Introduction to Smart Ignition Detection functionality==
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Smart Ignition detection is a functionality which detects ignition by sudden external voltage jumps instead of manually predefined High and Low voltage thresholds. This feature is especially beneficial to clients who want to monitor the ignition status of a vehicle based on the voltage of the battery, irregardless of the battery's health.
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==Smart Ignition Detection functionality logic==
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[[File:Smartignition.png|right|thumb|600px|Figure 1. “Smart Ignition” functionality logic]]
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“Smart Ignition Detection”– detects ignition “on” and “off” automatically by monitoring last “Smart Ignition Duration” seconds of external voltage and comparing it to current external voltage value. If current external voltage value is higher by “Smart Ignition Delta” than external voltage “Smart Ignition Duration” seconds ago, Ignition “on” event is detected. If current external voltage value is lower by “Smart Ignition Delta” than “Smart Ignition Duration” seconds ago Ignition “off” event is detected.
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==Smart Ignition Detection configuration==
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New configurable parameters were added under “Ignition Settings” (Figure 2):
  
Documenting release 03.29.00.Rev.980. Smart ignition detection was ported from 03.29.00.Rev.610.
 
Smart Ignition detection functionality which detects ignition by sudden external voltage jumps instead of manually set High and Low voltage ranges. New configurable parameters were added under “Ignition Settings” (Figure 1):
 
 
• Smart Ignition Enable/Disable – To enable functionality. Parameter is able to be configured if “Ignition Source” has “Power Voltage” configured.
 
• Smart Ignition Enable/Disable – To enable functionality. Parameter is able to be configured if “Ignition Source” has “Power Voltage” configured.
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• Smart Ignition Delta (mV) – How much external voltage must change to detect ignition ON or OFF event.
 
• Smart Ignition Delta (mV) – How much external voltage must change to detect ignition ON or OFF event.
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• Smart Ignition Duration (s) – Time interval used for comparing current external voltage against historical external voltage configured seconds ago.
 
• Smart Ignition Duration (s) – Time interval used for comparing current external voltage against historical external voltage configured seconds ago.
  [[File:Smart ignition.png|thumb]]
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  [[File:Smart ignition.png|thumb|left|alt=|Figure 2. “Smart Ignition” configurable parameters]]
Figure 1. “Smart Ignition” configurable parameters
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In case the vehicle has a variable voltage alternator, also known as a smart alternator, an alternative configuration is advised -- taking into account movement detection by accelerometer, in order to monitor the ignition status of the vehicle.
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[[File:Ignitionaccel.PNG|left|thumb|600px|Figure 3. “Smart Ignition” recommended configuration for vehicles with smart alternators]]
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'''<big>Parameter list</big>'''
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{| class="wikitable"
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! rowspan="2" style="width: 150px; background: #003475; color: white;" |'''Parameter ID'''
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! rowspan="2" style="width: 150px; background: #003475; color: white;" |'''Name'''
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! colspan="3" style="width: 150px; background: #003475; color: white;" |'''Value range'''
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! rowspan="2" style="width: 250px; background: #003475; color: white;" |'''Description'''
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|-
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! style="width: 75px; background: #003475; color: white;" |Min
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! style="width: 75px; background: #003475; color: white;" |Max
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! style="width: 75px; background: #003475; color: white;" |Default
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|-
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!style="text-align: center; vertical-align: center;" |66201
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|style="text-align: center; vertical-align: center;" |Smart Ignition
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|style="text-align: center; vertical-align: center;" |0
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|style="text-align: center; vertical-align: center;" |1
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|style="text-align: center; vertical-align: center;" |1
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|style="text-align: center;" |0 - Disabled; <br> 1 - Enabled
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|-
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!style="text-align: center; vertical-align: center;" |66202
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|style="text-align: center; vertical-align: center;" |Smart Ignition Delta, mV
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|style="text-align: center; vertical-align: center;" |100
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|style="text-align: center; vertical-align: center;" |2000
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|style="text-align: center; vertical-align: center;" |600
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|style="text-align: center;" |How much external voltage must change, in miliVolts to detect ignition ON or OFF event.
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|-
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!style="text-align: center; vertical-align: center;" |66203
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|style="text-align: center; vertical-align: center;" |Smart Ignition Duration, s
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|style="text-align: center; vertical-align: center;" |2
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|style="text-align: center; vertical-align: center;" |20
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|style="text-align: center; vertical-align: center;" |3
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|style="text-align: center;" |Time interval, in seconds, used for comparing current external voltage against historical external voltage configured seconds ago.
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|-
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|}
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“Smart Ignition Detection”– detects ignition “on” and “off” automatically by monitoring last “Smart Ignition Duration” seconds of external voltage and comparing it to current external voltage value. If current external voltage value is higher by “Smart Ignition Delta” than external voltage “Smart Ignition Duration” seconds ago, Ignition “on” event is detected. If current external voltage value is lower by “Smart Ignition Delta” than “Smart Ignition Duration” seconds ago Ignition “off” event is detected.
 
During device startup Initial Ignition state is set by checking external voltage current value against predefined values (Table 1) in case device startup while Ignition is really present but no voltage changes can be detected:
 
External Voltage Source Maximum Predefined Voltage, mV Initial Ignition Threshold
 
6V 8000 6100
 
12V 16000 13200
 
24V 32000 27000
 
Table 1. Predefined Initial Ignition values
 
  
External voltage source is chosen comparing different scenarios. If external voltage during startup is lower than predefined maximum voltage, but is higher that Ignition threshold, Ignition will be set. After that “Smart Ignition” functionality takes place.
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==Firmware and hardware compatibility==
Smart Ignition Parameters
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Smart ignition detection functionality is available for FMT100/FMX880 devices on the firmware 03.29.00.rev.980. You can download the firmware and configurator here. [[File:Download_zip.png|x30px|link=Special:Redirect/file/FMB.Ver.03.29.00.rev.980 and configurator.zip]]

Latest revision as of 10:11, 4 September 2024

Introduction to Smart Ignition Detection functionality

Smart Ignition detection is a functionality which detects ignition by sudden external voltage jumps instead of manually predefined High and Low voltage thresholds. This feature is especially beneficial to clients who want to monitor the ignition status of a vehicle based on the voltage of the battery, irregardless of the battery's health.


Smart Ignition Detection functionality logic

Figure 1. “Smart Ignition” functionality logic

“Smart Ignition Detection”– detects ignition “on” and “off” automatically by monitoring last “Smart Ignition Duration” seconds of external voltage and comparing it to current external voltage value. If current external voltage value is higher by “Smart Ignition Delta” than external voltage “Smart Ignition Duration” seconds ago, Ignition “on” event is detected. If current external voltage value is lower by “Smart Ignition Delta” than “Smart Ignition Duration” seconds ago Ignition “off” event is detected.







Smart Ignition Detection configuration

New configurable parameters were added under “Ignition Settings” (Figure 2):

• Smart Ignition Enable/Disable – To enable functionality. Parameter is able to be configured if “Ignition Source” has “Power Voltage” configured.

• Smart Ignition Delta (mV) – How much external voltage must change to detect ignition ON or OFF event.

• Smart Ignition Duration (s) – Time interval used for comparing current external voltage against historical external voltage configured seconds ago.

Figure 2. “Smart Ignition” configurable parameters












In case the vehicle has a variable voltage alternator, also known as a smart alternator, an alternative configuration is advised -- taking into account movement detection by accelerometer, in order to monitor the ignition status of the vehicle.

Figure 3. “Smart Ignition” recommended configuration for vehicles with smart alternators















Parameter list

Parameter ID Name Value range Description
Min Max Default
66201 Smart Ignition 0 1 1 0 - Disabled;
1 - Enabled
66202 Smart Ignition Delta, mV 100 2000 600 How much external voltage must change, in miliVolts to detect ignition ON or OFF event.
66203 Smart Ignition Duration, s 2 20 3 Time interval, in seconds, used for comparing current external voltage against historical external voltage configured seconds ago.


Firmware and hardware compatibility

Smart ignition detection functionality is available for FMT100/FMX880 devices on the firmware 03.29.00.rev.980. You can download the firmware and configurator here. Download zip.png