The invention discloses an automatic
numbering device and method for temperature sensors. The device comprises a power supply circuit, a sensor drive circuit, a display circuit, an input circuit, and a
data processing circuit. The method comprises following steps: performing integration to a
temperature function of kth time measurement of a temperature sensor at the nth position on a
temperature measurement axis to obtain an integral function of integral Tn<k>, n belongs to (k-1, k); comparing a
maximum function: {Maximum value of absolute value of [integral Tn<k>, n belongs to (k-1,k)-integral Tn<k>, n belongs to (k-2, k-1)]}, of absolute values of
temperature difference between the current temperature integral function of [integral Tn<k>, n belongs to (k-1, k)] of a sensor at the nth position and the last time temperature integral function of integral Tn<k>, n belongs to (k-2, k-1) with a set
temperature difference threshold Tc; when a temperature value of the
maximum function: {Maximum value of absolute value of [integral Tn<k>, n belongs to (k-1,k)-integral Tn<k>, n belongs to (k-2, k-1)]}, is larger than the
temperature difference threshold Tc, then the temperature sensor at the nth position is automatically numbered; repeating above steps until all the temperature sensors of the
temperature measurement axis are automatically finished
numbering. The method has small time consumption and high accuracy; by use of the device and method, automatic
numbering of temperature sensors can be realized, work efficiency is increased, and the cases of omissions and errors due to artificial numbering are avoided.