Lone worker is only enabled if the following conditions are met:

1) The lone worker settings have been enabled 

2) The device is not in trip (so ignition must be off)

3) The activation switch has been turned on


How It Works


The lone worker function is perfect for situations where you need a worker to check in periodically to be sure of their safety, or to remind a worker that they need to get back to their vehicle after a specified period of time. To do this, you will need an activation switch and, if you want to enabled check-ins, a momentary push button. 


Once the activation switch is on, the device will initiate a countdown timer. The device can be configured to use the internal buzzer to alert the driver that the countdown timer has started and/or stopped.


When lone worker check-in is enabled and the button is pressed, the timer resets and any enabled outputs will pulse twice, giving feedback to the driver that the check in was successful. The internal buzzer can also be configured to give feedback to the driver.


There are two levels of alerts that can be set on the device. The first is a warning period, which when expired can enable digital outputs (potentially connected to a buzzer to remind a driver that they need to check in or turn the feature off). The device will exit the warning state if the driver checks in, they disable the timer or the device enters emergency mode.


The second level is the lone worker alarm state, and is caused when the driver has not checked in to the vehicle within the specified time frame. An input bit is set, and a log of the emergency is made and is uploaded as soon as 3G or Iridium (if enabled) connects. It will stay in this alarm state until either the driver checks in or deactivates the feature. The server can then act on this information, and potentially send an alert to the driver, or another contact person.


Wiring


You will need to connect a toggle switch to one digital input, and another digital input wire to the momentary push button. 


The options for inputs are:


Input 1: Pin 16 (PINK)

Input 2: Pin 17 (BLUE)

Input 3: Pin 5 (GREEN/BLACK)

Input 4: Pin 4 (BROWN)


You will need to add the relevant digital inputs to the system parameters as well. This will allow you to set buzzing options to alert the driver when the buttons have been pressed and set the input as pull up or pull down as per the wiring.



Configuring On OEM


Lone Worker Master Enable

As a default this is disabled. To use this feature you must enable it here.


Enable Digital Output 1/2

If you would like digital output 1 or 2 to be enabled during a warning or alarm condition, then you will need to set this to "true".


Check In Expiry Period

This is the number of minutes after activation (or the latest check in) before an alarm condition will be logged, the device will attempt an upload, and the digital outputs will be set to "alarm" state.


Check In Expiry Warning Period

This is the number of minutes before the expiry time before the digital outputs will set to the warning parameters.


Enable Switch Digital Input

This is the digital input number that is wired to the activation switch.


Check In Digital Input

This is the digital input number that is wired to the check in momentary push button.


Lone Worker Alarm Digital Input

This is the digital input bit that is set when an alarm condition is reached, and can be linked to events and alerts in Telematics Guru.


Digout X Warn on Time

This is in steps of one tenth of second, and is the period of time that the digital output is on for when the device is in a warning state. Changing this parameter and the one below allows you to change the frequency at which the output is on. (Output is on for this time, off for the warn off time, on for this time ...) If it was connected to a buzzer the buzzer would buzz according to these settings. 


Digout X Warn off Time

This is in steps of one tenth of second, and is the period of time that the digital output is off for when the device is in a warning state.


Digout X Alarm on Time

This is in steps of one tenth of second, and is the period of time that the digital output is on for when the device is in an alarm state. Changing this parameter and the one below allows you to change the frequency at which the output is on. (Output is on for this time, off for the warn off time, on for this time ...)


Digout X Alarm off Time

This is in steps of one tenth of second, and is the period of time that the digital output is off for when the device is in an alarm state.


Invalid Parameters

Certain combinations of parameters are invalid and will cause the Lone Worker Alarm to fail, if your alarm is not working, check the logs in OEM for the following message:



The invalid combinations are:


  • Check In Digital Input is the same as Enable Switch Digital Input
  • Check in Expiry Warning Period is greater than the Check In Expiry Period (you can't have a warning X minutes before the alarm if the warning period is greater)
  • Check in Digital Input or Enable Switch Digital Input are greater than 31 (there aren't this many inputs)
  • Enable Digital Out 1 or 2 is set in the Lone Worker tab, and the Outputs aren't enabled under the Digital Output tabs. 



Telematics Guru


Telematics Guru can be configured to send out an alert when a vehicle logs a lone worker alarm state. You can do so by changing the following settings in the conditions tab: