1. A loop condition assessment system configured for assessing deterioration of a loop sensor, the system comprising: a power source configured to generate a set of stimuli that are provided in turn to the loop sensor, wherein the set includes individual stimuli, wherein the set includes a first stimulus having a first frequency and a second stimulus having a second frequency, wherein the first and second frequencies are different from each other; the loop sensor including a conductive element arranged in a loop, the loop sensor being configured to generate output signals conveying changes in inductance of the conductive element responsive to provision of the individual stimuli; an impedance component configured to determine, from the output signals produced responsive to the set of stimuli, impedances of the conductive element during the individual stimuli, wherein the impedance component is configured to determine: a first impedance responsive to provision of the first stimulus, a second impedance responsive to provision of the second stimulus; an analysis component configured to determine, from the impedances, model inductances and model resistances for a model of the loop sensor for the individual stimuli, wherein the analysis component is further configured to determine a first aggregate model inductance based on aggregation of at least two individual model inductances that correspond to individual stimuli; and an assessment component configured to assess whether the loop sensor has deteriorated based on one or more of the first aggregate model inductance, the determined model inductances, and the determined model resistances.