Remote monitoring system
A remote monitoring system provides a real-time monitoring of conditions of an apparatus, such as a power line. The remote monitoring system includes an apparatus that generates electrical signals, a remote monitoring module that is remote from the apparatus, and a transmission module. The transmission module is provided adjacent to the apparatus and transmits data that correspond to the electrical signals via a cellular network to the remote monitoring system. The remote monitoring module receives the signal and determines a condition of the apparatus based on the received electrical signal.
1. A remote monitoring module comprising:
a calling module configured to:
initiate a call thereby initiating transmission of an electrical signal, and
receive the electrical signal;
a power signature database configured to store a plurality of power signatures of electrical signals associated with insulators of a plurality of conditions; and
a data analysis module configured to:
receive the electrical signal,
transform the received electrical signal, and
compare the transformed received electrical signal with the plurality of power signatures stored in the power signature database to determine a condition of the insulator.
2. The remote monitoring module of claim 1 , wherein the transform the received electrical signal comprises performing a short-time Fourier transform on the received electrical signal.
3. The remote monitoring module of claim 2 , wherein the determined condition comprises a healthy condition.
4. The remote monitoring module of claim 3 , wherein the healthy condition comprises a peak of the coefficient value of the short-time Fourier transform is not greater than a predetermined threshold with respect to the power signatures stored in the power signature database.
5. The remote monitoring module of claim 3 , wherein the peak of the predetermined threshold comprises 40%.
6. The remote monitoring module of claim 2 , wherein the determined condition comprises a moderately-aged condition.
7. The remote monitoring module of claim 6 , wherein the moderately-aged condition comprises a peak of the coefficient value of the short-time Fourier transform is greater than a predetermined threshold with respect to the power signatures stored in the power signature database.
8. The remote monitoring module of claim 7 , wherein the peak of the predetermined threshold comprises 40%.
9. The remote monitoring module of claim 7 , wherein the peak does not occur at a predetermined interval.
10. The remote monitoring module of claim 9 , wherein the predetermined interval comprises once every 20 msec.
11. The remote monitoring module of claim 10 , wherein the late-aged condition comprises a peak of the coefficient value of the short-time Fourier transform is greater than a predetermined threshold with respect to the power signatures stored in the power signature database.
12. The remote monitoring module of claim 11 , wherein the peak of the predetermined threshold comprises 40%.
13. The remote monitoring module of claim 11 , wherein the peak occurs at a predetermined interval.
14. The remote monitoring module of claim 13 , wherein the predetermined interval comprises once every 20 msec.
15. The remote monitoring module of claim 2 , wherein the determined condition comprises a late-aged condition.
16. A method comprising:
initiating a call thereby initiating transmission of an electrical signal receiving the electrical signal;
maintaining a power signature database configured to store a plurality of power signatures of electrical signals associated with insulators of a plurality of conditions; transforming the received electrical signal; and
comparing the transformed received electrical signal with the plurality of power signatures stored in the power signature database;
determining a condition of the insulator based on the comparison.
17. The method of claim 16 , wherein the transforming the received electrical signal comprises performing a short-time Fourier transform on the received electrical signal.