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According to an example, a system for managing a fluid condition in a pipe includes a controller to receive temperatures of the pipe detected by the temperature sensor over a period of time. The controller may determine, based upon the temperatures of the pipe over the period of time, a temperature

According to an example, a system for managing a fluid condition in a pipe includes a controller to receive temperatures of the pipe detected by the temperature sensor over a period of time. The controller may determine, based upon the temperatures of the pipe over the period of time, a temperature profile of the pipe and may determine that the temperature profile of the pipe indicates that a freezing onset event has occurred. The freezing onset event may include a transition from a drop in temperature to an increase in temperature, in which the temperature during the transition is below a freezing point temperature of a fluid contained in the pipe. The controller may further trigger at least one of an alarm and an activation of a first freezing prevention device in response to the determination that the freezing onset event has occurred.

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1. A system for managing a fluid condition in a pipe, said system comprising: a controller configured to receive temperatures of the pipe detected by a temperature sensor over a period of time, wherein the controller is further configured to:determine, based upon the temperatures of the pipe over th

1. A system for managing a fluid condition in a pipe, said system comprising: a controller configured to receive temperatures of the pipe detected by a temperature sensor over a period of time, wherein the controller is further configured to:determine, based upon the temperatures of the pipe over the period of time, a temperature profile of the pipe;determine that the temperature profile of the pipe indicates that a freezing onset event has occurred, the freezing onset event including a transition from a drop in temperature to an increase in temperature, wherein the temperature during the transition is below a freezing point temperature of a fluid contained in the pipe; andtrigger at least one of an alarm and an activation of a first freezing prevention device in response to the determination that the freezing onset event has occurred. 2. The system according to claim 1, further comprising: the temperature sensor to detect the temperature of the pipe; anda second freezing prevention device, wherein the second freezing prevention device is to be activated in response to the temperature of the pipe falling below a predetermined temperature level and prior to the triggering of the at least one of the alarm and the activation of the first freezing prevention device. 3. The system according to claim 2, wherein the second freezing prevention device is a recirculation pump configured to cause the fluid in the pipe to be recirculated, and wherein the controller is further configured to control activation of the recirculation pump. 4. The system according to claim 1, wherein the first freezing prevention device comprises at least one of a recirculation pump configured to cause the fluid to be recirculated through the pipe and a heating device to heat the pipe. 5. The system according to claim 1, wherein to determine that the temperature profile of the pipe indicates that the freezing onset event has occurred, the controller is further configured to determine that the drop in temperature occurred from a temperature that is above the freezing point temperature of the fluid. 6. The system according to claim 1, wherein to determine that the temperature profile of the pipe indicates that the freezing onset event has occurred, the controller is further configured to determine that the increase in temperature occurred immediately following the decrease in temperature. 7. The system according to claim 1, wherein the pipe is housed in a structure, wherein the controller is further configured to receive an environmental temperature measurement from an external temperature sensor that is positioned outside of the structure to determine the environmental temperature and to include the received environmental temperature measurement in determining that the temperature profile of the pipe indicates that the freezing onset event has occurred. 8. The system according to claim 1, wherein the controller is further configured to determine that the temperature profile of the pipe indicates that a thawing onset event of a frozen fluid in the pipe has occurred, said thawing onset event including a first rise in temperature that exceeds a first predetermined rate of temperature rise followed by a second rise in temperature that falls below a second predetermined rate of temperature rise. 9. A method for managing a fluid condition in a pipe, said method comprising: receiving temperatures of the pipe from a temperature sensor over a period of time;determining, by a processor, based upon the received temperatures of the pipe over the period of time, a temperature profile of the pipe;determining, by the processor, that the temperature profile of the pipe indicates that a freezing onset event has occurred, wherein the freezing onset event includes a transition from a drop in temperature to an increase in temperature, wherein the temperature during the transition is below a freezing point temperature of a fluid contained in the pipe; andtriggering at least one of an alarm and an activation of a first freezing prevention device in response to the determination that the freezing onset event has occurred. 10. The method according to claim 9, wherein the triggering further comprises triggering the at least one of the alarm and the activation of the first freezing prevention device following activation of a second freezing prevention device, wherein the second freezing prevention device is to be activated in response to the temperature of the pipe falling below a predetermined temperature level. 11. The method according to claim 9, wherein the determining that the temperature profile of the pipe indicates that the freezing onset event has occurred further comprises determining that the drop in temperature occurred from a temperature that is above the freezing point temperature of the fluid. 12. The method according to claim 9, wherein the pipe is housed inside of a structure, said method further comprising: receiving an environmental temperature measurement from an external temperature sensor that is positioned outside of the structure; andwherein the determining that the temperature profile of the pipe indicates that the freezing onset event has occurred further comprises including the received environmental temperature measurement in determining that the temperature profile of the pipe indicates that the freezing onset event has occurred. 13. The method according to claim 9, wherein the pipe is housed inside of a structure and wherein at least some of the fluid inside the pipe is frozen, said method further comprising: receiving temperatures of the pipe from the temperature sensor over a second period of time;determining a second temperature profile of the pipe based upon the received temperature of the pipe;determining that a thawing onset event has occurred, said thawing onset event including a first rise in temperature that exceeds a first predetermined rate of temperature rise followed by a second rise in temperature that falls below a second predetermined rate of temperature rise. 14. A non-transitory computer readable storage medium on which is stored machine readable instructions that when executed by a processor cause the processor to: receive temperatures of a pipe from a temperature sensor over a period of time;determine, based upon the received temperatures of the pipe over the period of time, a temperature profile of the pipe;determine that the temperature profile of the pipe indicates that a freezing onset event has occurred, wherein the freezing onset event includes a transition from a drop in temperature to an increase in temperature, wherein the temperature during the transition is below a freezing point temperature of a fluid contained in the pipe; andtrigger at least one of an alarm and an activation of a first freezing prevention device in response to the determination that the freezing onset event has occurred. 15. The non-transitory computer readable storage medium according to claim 14, wherein the machine readable instructions are further configured to cause the processor to trigger the at least one of the alarm and the activation of the first freezing prevention device following activation of a second freezing prevention device, wherein the second freezing prevention device is to be activated in response to the temperature of the pipe falling below a predetermined temperature level.