Cooling device identification

A system, comprising:

• a chassis;
• a cooling device installed within the chassis, the cooling device comprising a rotatable component and a tachometer signal line for reporting information associated with the speed of rotation of the rotatable component;
• one or more data processors coupled to the cooling device;
• and
• a non-transitory computer-readable storage medium containing instructions which, when executed by the one or more data processors, causes the one or more data processors to perform operations including:
• receiving an encoded signal from an encoding circuit of the cooling device via the tachometer signal line, during a preset broadcasting phase, wherein the encoded signal includes cooling device identification information;
• receiving a signal of the speed of rotation of the rotatable component from the tachometer via the tachometer signal during a reporting phase following the broadcasting phase;
• and
• obtaining cooling device identification information based on the received encoded signal.

A method, comprising:

• receiving power at a cooling device of a computing system, the cooling device comprising a rotatable component, an encoding circuit, and a tachometer signal line for reporting information associated with the speed of rotation of the rotatable component;
• outputting an encoded signal generated by the encoding circuit via the tachometer signal line, during a preset broadcasting phase, wherein the encoded signal includes cooling device identification information, and wherein the encoded signal, when received, is decodable to determine identification information associated with the cooling device;
• and
• receiving a signal of the speed of rotation of the rotatable component from the tachometer via the tachometer signal during a reporting phase following the broadcasting phase.