Triggers & I/O

Updated

Summary

The Proxicam Pedestrian Detection System features versatile Input/Output (I/O) trigger capabilities designed to interface with third-party safety hardware and machine control circuits. By utilizing the standard 8-Pin Power Harness (8PT) or the advanced Proxicam Enhancement Box (PXE), technicians can implement conditional alerting, dynamic detection muting, and automated external warnings.

 

Features and Functions

Output Triggers for External Hardware

When an automatic action is required following a specific operation or detection event, output triggers deliver a voltage signal to activate external devices.

  • 8-Pin Power and I/O Harness (8PT): 
    Typically used in standalone or Detection Indicator (PXLED) installations. The Alarm-Out wire goes High (9.5V - 13V DC) during a pedestrian detection event. The maximum current draw is limited to 450mA.
  • Enhancement Box (PXE): 
    For advanced installations, the PXE provides four individual high-level triggers corresponding directly to each connected camera (Left, Right, Front, Rear). Each output trigger delivers a regulated 500mA at up to 12.6V DC.

Conditional Input Triggers

Input triggers allow the Proxicam system to respond dynamically to the operational state of the machine.

  • 8PT Harness (Alarm-In): 
    The Alarm-In wire acts as a conditional input that accepts a switched supply of 12V - 48V DC. The system will only issue alerts via the PXLED or the Alarm-Out wire when a positive voltage is applied to this input.
  • PXE Harness (FWD/MUTE-IN & AUX): 
    The PXE module accepts specific input signals to enable advanced logic modes such as FWD/REV Dynamic Detection or Safe-to-Approach muting. Depending on the physical mode switch selected on the PXE, the FWD/MUTE-IN wire can be connected to the machine's forward gear, park brake, or lock-out circuits, while the AUX wire connects to the reverse signal.

Suggested Uses for I/O Integration

The built-in I/O controllers facilitate custom solutions across diverse industrial environments:

  • External Warning Devices: T
    riggering high-intensity strobe beacons, sirens, or the Proxicam Pedestrian Voice Alert (PXALERT) to warn personnel on foot.
  • Site Infrastructure: 
    Interfacing with facility traffic management systems or autonomous locking gates to physically prevent pedestrian entry when a machine is nearby.
  • Machine Controls: 
    Connecting to machine relays to initiate automated speed reduction or deceleration protocols when an exclusion zone is breached.

 

Installation and Configuration

All output triggers must be configured using the web-based Proxicam Configuration App to dictate under which conditions the hardware should activate.

  1. Access the Interface: 
    Connect your smart device to the camera via the USBCAL WiFi dongle and launch the application in your web browser.
  2. Navigate to Alerts: 
    Open the Alerts & Triggers menu.
  3. Assign Active Zones: 
    Under the Pedestrian Alert section, use the toggle switches to independently enable or disable the output trigger for the Green Zone, Yellow Zone, and Red Zone. When a zone is set to ON, any detection within that zone will activate the corresponding Alarm-Out or PXE trigger wire.
  4. Set Output Duration: 
    Adjust the Trigger Duration to define the minimum length of time (in milliseconds) that the output signal remains active during a detection event. Click Apply to save settings.

 

Troubleshooting & FAQ

I have connected my system using the 8PT harness, but the PXLED and output triggers are completely dead when a person is detected. 
This usually occurs because the Alarm-In wire on the 8PT harness is not receiving voltage. The Alarm-In is a conditional trigger; the system will not issue physical alerts unless this wire receives a positive 12V-48V DC signal. If you do not require conditional alerting (e.g., only alerting when in reverse), you must wire the Alarm-In wire directly to a continuous positive power supply.

My third-party siren is connected to the Alarm-Out wire, but it trips the system or fails to sound loudly. 
Verify the current draw of your external hardware. The Alarm-Out wire on the 8PT and 4PT harnesses has a strict maximum current limit of 450mA. The output triggers on the PXE module are limited to 500mA each. If your external siren or beacon draws more current than these limits, you must wire a 12V switching relay into the circuit to safely trigger the device.

 

Related Articles

  • Proxicam Enhancement Box (PXE) Technical Setup Guide
  • Proxicam Camera Configuration App User Manual
  • Proxicam Wiring Diagrams and Schematics
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