Case Studies

speed trap for automotive testing

Custom Speed Trap Device Using Photoelectric Gate Sensors

Posted in Automotive, Embedded Development & Programming


DMC upgraded a speed trap device for a client in the field of automotive safety. The device uses photoelectric sensors to accurately measure the velocities of automobiles during crash testing.


A client in the automotive safety industry wanted to upgrade a product it was using to measure the velocities of automobiles during crash testing. Their device was limited in its out-of-the-box features and accessibility.

DMC’s goal was to develop a plug-and-play solution that extended the features of the existing device. Some of the upgraded features that DMC implemented included the ability to allow for speed measurement independent of which sensor was triggered first. DMC also added redundant gates to validate results. The solution was engineered to be easy to mount and operate.

Customer Benefits

  • Extends the existing hardware functionality to measure speeds through photoelectric gates bidirectionally
  • Delivers the solution in an all-in-one, easily mountable enclosure
  • Increases the accuracy and usability of an out-of-box speed tracking solution
  • Provided services for electronics design, CAD design, and a suite of functional verification tests


  • Altium Designer
  • Photoelectric gate sensors