The phrase "a system that detects" is correct and usable in written English.
You can use it when describing a system designed to identify or recognize specific elements or conditions.
Example: "The new software is a system that detects anomalies in data patterns, helping to prevent potential security breaches."
Alternatives: "a mechanism that identifies" or "a tool that recognizes".
The scientists at Johns Hopkins used a system that detects short stretches of RNA.
The incident raised questions with civilian experts because the C-17, built by Boeing, is one of the younger planes in the Air Force inventory, and would presumably have been equipped with a system that detects missiles and then either drops decoy flares or deploys a laser to blind incoming missiles, the two technologies in broad use.
Scientists have developed a system that detects whether or not milk has gone sour.
In this paper we (1) designed and implemented a system that detects traffic flooding attacks.
We developed a system that detects sleep spindles in real time and applies oscillatory stimulation.
We proposed a method that can detect specific human behaviors even in crowded surveillance video sequences, and we developed a system that detects the NIST-defined behaviors PersonRuns, PeopleMeet, and ObjectPut.
To see if the birds could make adjustments, the researchers devised an experiment using a computerized system that detects slight variations in pitch in the song.
Amazon has applied for a patent for an audio system that detects the accent of a speaker and changes it to the accent of the listener, perhaps helping eliminate communication barriers in many situations and industries.
A Dartmouth researcher thinks he may have a solution for all those who hate manually writing into an app all the foods they eat throughout the day — a wearable system that detects how much you chew and enters it for you.
Adoption of a classification system that detects mild hearing loss (ASHA) is recommended.
The second way to measure safety is to use a monitoring system that detects problems and evaluates it periodically using quality indicators.
