A system for detecting leaks of liquid, comprising a central management unit and a plurality of linear sensors each comprising a first end and a second end and which are connected to one another in series, the plurality of linear sensors (5001 to 5006), connected together, form a linear query bus having a first and a second end, the central management unit is designed to, the at least one end of the linear query bus: - send at least one query signal (E1, E2) via the linear query bus and receive at least one response signal (R1, R2) from the plurality of linear sensors (5001 to 5006) via said end, communication between the linear query bus and the central management unit being two-way in such a case, characterized in that the linear query bus is connected at both ends (51, 52) to the central management unit, and in that the central management unit is also arranged to compare at least one first series of response signals obtained by the first end of the linear query bus with: • a second series of response signals obtained by the second end of the linear query bus, and/or, • a list of data characterizing the plurality of linear sensors, said list being stored by said central management unit, the central management unit by deducing the presence or absence of a break of one of the linear sensors on the linear query bus. the plurality of linear sensors (5001 to 5006), connected together, form a linear query bus having a first and a second end, the central management unit is designed to, the at least one end of the linear query bus: - send at least one query signal (E1, E2) via the linear query bus and receive at least one response signal (R1, R2) from the plurality of linear sensors (5001 to 5006) via said end, - send at least one query signal (E1, E2) via the linear query bus and receive at least one response signal (R1, R2) from the plurality of linear sensors (5001 to 5006) via said end, communication between the linear query bus and the central management unit being two-way in such a case, characterized in that the linear query bus is connected at both ends (51, 52) to the central management unit, and in that the central management unit is also arranged to compare at least one first series of response signals obtained by the first end of the linear query bus with: • a second series of response signals obtained by the second end of the linear query bus, and/or, • a list of data characterizing the plurality of linear sensors, said list being stored by said central management unit, characterized in that the linear query bus is connected at both ends (51, 52) to the central management unit, and in that the central management unit is also arranged to compare at least one first series of response signals obtained by the first end of the linear query bus with: • a second series of response signals obtained by the second end of the linear query bus, and/or, • a list of data characterizing the plurality of linear sensors, said list being stored by said central management unit, • a second series of response signals obtained by the second end of the linear query bus, and/or, • a list of data characterizing the plurality of linear sensors, said list being stored by said central management unit, the central management unit by deducing the presence or absence of a break of one of the linear sensors on the linear query bus.