Energy value curve in target info page is miscalculated

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target他.jpg

The attachment is the "Target Info." page for the radar sensor HLK-LD2410S. Customer has extracted the values of the green energy value curve as the following.
19.1 30.4 23.5 24.6 16.9 6 12 18.1 16.9 19.1 22.9 18.1 0 9.5 14

The below is the raw value collected from serial ports and the calculated energy value based on the formula 10*log10(raw) provided in the user manual. We can see the calculated value has significant discrepancy with the value of the energy value curve. We wonder why it is happen? Whether other scales have been added in the formula.

serial #1
F4 F3 F2 F1 46 00 01 00 00 00 00 00 60 09 00 00 34 08 00 00 4C 04 00 00 80 02 00 00 74 04 00 00 CE 05 00 00 CE 05 00 00 14 05 00 00 BF 01 00 00 DF 00 00 00 6B 04 00 00 C3 02 00 00 6E 08 00 00 42 09 00 00 14 05 00 00 F9 02 00 00 F8 F7 F6 F5
Raw (0→15): 2400, 2100, 1100, 640, 1140, 1486, 1486, 1300, 447, 223, 1131, 707, 2158, 2370, 1300, 761
10·log10(raw): 33.80, 33.22, 30.41, 28.06, 30.57, 31.48, 31.48, 31.14, 26.50, 23.49, 30.53, 28.50, 33.34, 33.75, 31.14, 28.81

serial #2
F4 F3 F2 F1 46 00 01 00 00 00 00 00 8C 23 00 00 7C 15 00 00 A4 0F 00 00 D1 02 00 00 4C 06 00 00 76 07 00 00 20 03 00 00 90 01 00 00 38 03 00 00 F0 04 00 00 CE 05 00 00 3C 01 00 00 D1 02 00 00 2C 01 00 00 D4 04 00 00 E8 07 00 00 F8 F7 F6 F5
Raw (0→15): 9100, 5500, 4004, 721, 1612, 1910, 800, 400, 824, 113, 721, 1248, 1486, 316, 721, 2004
10·log10(raw): 39.59, 37.40, 36.03, 28.58, 32.07, 32.81, 29.03, 26.02, 29.16, 20.53, 28.58, 31.96, 31.72, 24.99, 28.58, 33.02

serial #3
F4 F3 F2 F1 46 00 01 00 00 00 00 00 F4 33 00 00 90 1A 00 00 BB 07 00 00 7E 03 00 00 1D 06 00 00 BC 02 00 00 F3 05 00 00 F8 04 00 00 90 01 00 00 1A 02 00 00 35 02 00 00 F9 02 00 00 97 05 00 00 40 06 00 00 9C 01 00 00 BF 01 00 00 F8 F7 F6 F5
Raw (0→15): 13300, 6800, 1979, 894, 1565, 700, 1523, 1272, 1160, 400, 538, 629, 1529, 1600, 412, 447
10·log10(raw): 41.24, 38.33, 25.93, 29.65, 31.95, 28.45, 31.83, 31.04, 30.64, 26.02, 27.30, 27.99, 31.85, 32.04, 26.15, 26.50

serial #4
F4 F3 F2 F1 46 00 01 00 00 00 00 00 7C 60 00 00 00 32 00 00 65 13 00 00 4C 06 00 00 C3 02 00 00 64 00 00 00 17 05 00 00 E8 03 00 00 DD 03 00 00 B4 04 00 00 5E 04 00 00 8E 04 00 00 68 01 00 00 50 05 00 00 7E 03 00 00 64 00 00 00 F8 F7 F6 F5
Raw (0→15): 24700, 12800, 4965, 1612, 100, 1303, 1000, 1020, 1140, 1102, 1166, 360, 1360, 894, 100, 0
10·log10(raw): 43.92, 41.07, 36.96, 32.07, 20.00, 31.15, 30.00, 30.09, 30.57, 30.42, 30.67, 25.56, 31.33, 29.65, 20.00, -Inf

serial #5
F4 F3 F2 F1 46 00 01 00 00 00 00 00 48 3F 00 00 E0 15 00 00 59 11 00 00 70 05 00 00 56 07 00 00 35 04 00 00 D1 02 00 00 84 03 00 00 3C 01 00 00 F4 01 00 00 7E 03 00 00 F3 05 00 00 A8 01 00 00 80 02 00 00 F4 01 00 00 DF 00 00 00 F8 F7 F6 F5
Raw (0→15): 16200, 5600, 4441, 1392, 1878, 1077, 721, 900, 316, 500, 894, 1523, 424, 640, 500, 223
10·log10(raw): 42.10, 37.48, 36.47, 31.44, 32.74, 30.33, 28.58, 29.54, 24.99, 26.99, 29.65, 31.83, 26.27, 28.06, 26.99, 23.49

1 Answers

Hello Mr Zhang,

Thank you for the detaied infos and patience.
When checking the parameter configuration, please first convert the raw data using the formula "20 · log10 (raw)". The device will only trigger a "manned" alarm if the converted value exceeds the dynamic threshold.
We hope this answer meets your requirements.Please feel free to reach out with any further questions, and we will respond to you as soon as possible.

B regards
Hi-link Team

Thanks for your updates. I needed to clarify that the main issue is that the real-time value of green energy value curve is not matched with the calcuated value whethe the formula is 10log10(raw) and the formula is "20log10(raw)". AI answers that the difference is expected because that the energy curve is normalized and offset, not raw 10*log10(raw). Is AI answer reasonable?
If needed, I can send the *.dat file of customer env through the mail and could you please replay the *.dat file to recreate the issue?

Yes, the energy curve of the upper computer has been processed. The most primitive data is the data calculated by formulas.

@hlk-ellen Thanks for your updates. Can you provide the details or algorithm how the upper computer process the raw energy data to customer?