US 12,360,143 B2
Intelligent electronic device and method thereof
Shaohang Cui, Toronto (CA); Ketao Li, Toronto (CA); Yufan Wang, Toronto (CA); and Liang Wang, Toronto (CA)
Assigned to Accuenergy (Canada) Inc., Toronto (CA)
Filed by Accuenergy (Canada) Inc., Toronto (CA)
Filed on Dec. 5, 2022, as Appl. No. 18/075,376.
Prior Publication US 2024/0183888 A1, Jun. 6, 2024
Int. Cl. G08B 21/00 (2006.01); G01R 22/06 (2006.01); H04B 10/40 (2013.01)
CPC G01R 22/063 (2013.01) [H04B 10/40 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An Intelligent Electronic Device (IED) comprising:
at least one sensor configured for sensing at least one electrical parameter of electrical power distributed from an electrical distribution system to a load;
at least one analog-to-digital converter coupled to the at least one sensor and configured for converting an analog signal output from the at least one sensor to digital data;
a Digital Signal Processor (DSP) coupled to the at least one analog-to-digital converter, and configured to perform digital signal processing on the the digital data from the at least one analog-to-digital converter;
a CPU coupled to the DSP via a hardware path; and
wherein the DSP and the CPU are configured to communicate using a transmission protocol comprising a packet structure, the packet structure including:
a header comprising a wakeup word, a packet header, a packet type, a packet length, and a packet counter;
a data header including a field of command identification indicating a specific communication purpose and a field of command type indicating the communication direction and frequency;
a data payload; and
a footer comprising a checksum, an ending wakeup word, and a closure word;
wherein the command type comprises:
a request command packet sent from the CPU to the DSP;
a periodic command packet sent from the DSP to the CPU; and
an event-triggered command packet sent from the DSP to the CPU.