设计INA226电源监测电路如上图所示
1.由J1引入28V电源，采集该电源的电压及电流
2.外接28V电源经过光耦继电器U1后连接至电流采样电阻，该电阻为10mohm
3.J3为电源输出接口，连接至电子负载
实际测试过程中，发现INA226采集的电源电流，比实际电流值大，系数为1.0768，即：
实际电流 = INA226采集电流 
1.0768
以下为测试数据，以0.1安培为步进测试，
| 电子负载设定值 | 电子负载显示值 | INA226采集值 |
| 0 | 0 | 0 |
| 0.1 | 0.1 | 0.107 |
| 0.2 | 0.201 | 0.215 |
| 0.3 | 0.302 | 0.323 |
| 0.4 | 0.402 | 0.43 |
| 0.5 | 0.503 | 0.538 |
| 0.6 | 0.603 | 0.645 |
| 0.7 | 0.703 | 0.753 |
| 0.8 | 0.804 | 0.861 |
| 0.9 | 0.904 | 0.968 |
| 1 | 1.004 | 1.076 |
| 1.1 | 1.104 | 1.183 |
| 1.2 | 1.205 | 1.291 |
| 1.3 | 1.305 | 1.399 |
| 1.4 | 1.405 | 1.506 |
| 1.5 | 1.505 | 1.614 |
| 1.6 | 1.606 | 1.722 |
| 1.7 | 1.705 | 1.829 |
| 1.8 | 1.806 | 1.937 |
| 1.9 | 1.905 | 2.045 |
| 2 | 2.006 | 2.152 |
| 2.1 | 2.106 | 2.26 |
| 2.2 | 2.206 | 2.367 |
| 2.3 | 2.306 | 2.475 |
| 2.4 | 2.406 | 2.584 |
| 2.5 | 2.506 | 2.691 |
| 2.6 | 2.606 | 2.799 |
| 2.7 | 2.706 | 2.906 |
| 2.8 | 2.806 | 3.014 |
| 2.9 | 2.906 | 3.122 |
| 3 | 3.006 | 3.229 |
| 3.1 | 3.107 | 3.337 |
| 3.2 | 3.207 | 3.445 |
| 3.3 | 3.306 | 3.553 |
| 3.4 | 3.407 | 3.661 |
| 3.5 | 3.507 | 3.769 |
| 3.6 | 3.607 | 3.876 |
| 3.7 | 3.707 | 3.984 |
| 3.8 | 3.806 | 4.092 |
| 3.9 | 3.907 | 4.2 |
| 4 | 4.007 | 4.308 |
| 4.1 | 4.107 | 4.416 |
| 4.2 | 4.207 | 4.525 |
| 4.3 | 4.306 | 4.631 |
| 4.4 | 4.407 | 4.739 |
| 4.5 | 4.507 | 4.847 |
| 4.6 | 4.607 | 4.956 |
| 4.7 | 4.707 | 5.061 |
| 4.8 | 4.807 | 5.171 |
| 4.9 | 4.907 | 5.277 |
| 5 | 5.007 | 5.384 |
| 5.1 | 5.107 | 5.492 |
| 5.2 | 5.207 | 5.599 |
| 5.3 | 5.3 | 5.707 |
| 5.4 | 5.407 | 5.816 |
| 5.5 | 5.507 | 5.923 |
| 5.6 | 5.607 | 6.034 |
| 5.7 | 5.707 | 6.142 |
| 5.8 | 5.807 | 6.253 |
| 5.9 | 5.907 | 6.359 |
| 6 | 6.007 | 6.47 |
，该图中，横轴为电子负载显示值，纵轴为INA226采集值
我不知道是什么原因造成的偏差。
