The Amb82 Mini is a development kit based on an SoC designed by Realtek. This study aims to explore the potential applications of the product and evaluate the performance of the demo kit.
Testing
Power consumption
The power consumption testing using raspberry pi pico with INA219 for current mThe power consumption test utilizes a Raspberry Pi Pico with an INA219 sensor for current measurement. Data is transmitted via the serial port, displayed as a digital waveform, and plotted using Matplotlib.
Amb82 mini standby consumption
Result: the measured current for the entire amb82 mini system is approximately 6.6 mA, with a power consumption of 34 mW at a voltage of 5.12 V.
Amb82 mini streaming consumption
Result: the average of the power consumption is approximately 1300mW.
Amb82 mini streaming consumption
Result: when the Amb82 Mini is triggered to capture a photo, it takes approximately 51 ms. The entire process, including taking the picture, saving it to the SD card, and returning to standby mode, takes around 600 ms with an approximate power consumption of 400 mW.
Photo shooting speed
Without YOLOv4t(sample rate:200/s)
| power-off->standby | Init time(ms) | shooting time(ms) | V/mA/mW/Samples |
| VGA | 511 | 91 | 4.93/103.77/508.64/160 |
| HD | 544 | 99 | 4.93/110.95/544.74/167 |
| FHD | 543 | 174 | 4.91/114.96/564.54/182 |
| standby->standby | Init time | shooting time | V/mA/mW/Samples |
| VGA | 340 | 79 | 5/86.85/432.07/126 |
| HD | 341 | 92 | 5.01/89.39/445.35/128 |
| FHD | 340 | 99 | 4.97/93.7/462.21/131 |
With YOLOv4t(sample rate:200/s)
| power-off->standby | Init time(ms) | shooting time(ms) | V/mA/mW/Samples |
| VGA | 608 | 166 | 4.94/139.72/685.48/267 |
| HD | 620 | 173 | 4.98/136.16/673.92/272 |
| FHD | 620 | 195 | 4.94/144.72/709.29/277 |
| standby->standby | Init time | shooting time | V/mA/mW/Samples |
| VGA | 405 | 107 | 4.94/127.68/625.27/220 |
| HD | 405 | 148 | 4.98/128.19/634.21/228 |
| FHD | 405 | 266 | 4.84/145.19/698.74/250 |
Conclusion: the initialization time is critical for the application because it affects the actual photo. For example, if a burglar enters the restricted zone and the camera takes a picture after one second, the burglar may have already run away. For power-saving purposes, we also hope the device can either enter standby mode or shut down until it is triggered again.