Motorola hmsm4150 Manuel d'utilisateur

US 20090222142A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2009/0222142 A1 Kao et al. (43) Pub. Date: Sep. 3, 2009 (54)

store samples in circular buller 610 analyze sample window 615 store samples in circular buffer 611 I analyze sample window 616 store samples in circ

Patent Application Publication Sep. 3, 2009 Sheet 10 0f 10 US 2009/0222142 A1 serial arcing temperature normal (no arcing) time normal (no arcing) cur

US 2009/0222142 A1 ELECTRICAL MONITORING AND CONTROL SYSTEM [0001] This application claims priority from US. provi sional patent application Ser. No.

US 2009/0222142 A1 advantages of the invention are set forth in or are apparent from the following description and drawings. BRIEF DESCRIPTION OF THE

US 2009/0222142 A1 other cases, processor 10 responds to instructions entered locally by an input device (not shown), or received from a remote contro

US 2009/0222142 A1 [0069] Continuous arcing signals represent continuous arc ing due to, e.g., intermittent contact or an aging connection, and displa

US 2009/0222142 A1 set of data pair) needed for FDD. Such redundancy provides additional bene?ts in the process of FDD. [0088] Learning Will noW be di

US 2009/0222142 A1 [0108] During normal operation, movable wire 372 is con nected between wire 377 and wire 373, so that power ?ows through receptacle

US 2009/0222142 A1 [0128] At step 615, Which occurs periodically such as every 30 seconds, microprocessor 570 analyzes the stored values to produce an

US 2009/0222142 A1 [0152] FIG. 17 shows exemplary Fast Fourier Transform (FFT) spectra of the current vs. frequency curves for normal operation and se

Patent Application Publication sensor 5 Sep. 3, 2009 Sheet 1 0f 10 sensor6 controller 20 processor 10 25 display 30 printer 31 comm 41 comm 40 tel net

US 2009/0222142 A1 [0180] At step 655B, corresponding to another fault such as appliance malfunction, microprocessor 570 determines What action, if an

Patent Application Publication Sep. 3, 2009 Sheet 2 0f 10 US 2009/0222142 A1 current Fig. 2 <.___> time 1 mlcrosec vo?age Fig. 3 time <——-—-&

Patent Application Publication Sep. 3, 2009 Sheet 3 0f 10 US 2009/0222142 A1 current Fig. 5 even? event2 time <—> 1 microsec voltage Fig. 6 H H

Patent Application Publication Sep. 3, 2009 Sheet 4 0f 10 US 2009/0222142 A1 temperature @ red region temp ___ __________________________ __ | _ thres

Patent Application Publication Sep. 3, 2009 Sheet 5 0f 10 US 2009/0222142 A1 Fig. 10 r_—\ 201 21 1 212 231 232 ;__/ 255 l—__ 250 _____I /—'—&apos

Patent Application Publication Sep. 3, 2009 Sheet 6 0f 10 US 2009/0222142 A1 E F__—\ 301 311 312 331 332 \_—J 355 Fig. 11 I___— 1 350 _._—_| ’—_? 341

Patent Application Publication Sep. 3, 2009 A o 401 403 405 412 411 I 432 407 455 450 460 404 406 [I I] D 408 402 Fig. 12A Sheet 7 0f 10 US 2009/0222

Patent Application Publication Sep. 3, 2009 Sheet 8 0f 10 US 2009/0222142 A1 5.0.Q 510 LINE 1 current sensor LOAD 511 —> 550 temperature light sens