# ploss_record 实体

> 所属模块：[数据模型概览](../概览.md)

---

## 1. 表定义

**表名**：`ploss_record`

**描述**：存储 Ploss FOD 格式解析数据，对应日志格式 `FOD-> (1)...(13)`

---

## 2. 字段定义

| 列名 | 类型 | 约束 | 说明 |
|------|------|------|------|
| id | UUID | PK, NOT NULL | 主键 |
| scenario_id | UUID | FK, NOT NULL | 关联测试场景 |
| rx_type | TINYINT | NOT NULL | 接收端类型标识 |
| rx_power | SMALLINT | NOT NULL | 接收端功率（mW） |
| tx_power | SMALLINT | NOT NULL | 发射端功率（mW） |
| vcoil | SMALLINT | NOT NULL | 发射线圈电压 |
| vin | SMALLINT | NOT NULL | 输入电压 |
| isns | SMALLINT | NOT NULL | 输入电流采样值 |
| ploss | INT | NOT NULL | **核心值**：计算损耗（负数=安全） |
| threshold | INT | NOT NULL | **安全红线**：当前功率段阈值 |
| trigger_count | SMALLINT | NOT NULL, DEFAULT 0 | 触发计数器 |
| fod_result | SMALLINT | NOT NULL, DEFAULT 0 | FOD判定结果 |
| protocol_type | TINYINT | NOT NULL | 充电协议类型 |
| pwm_duty | SMALLINT | NOT NULL | PWM占空比 |
| coil_index | TINYINT | NOT NULL | 充电线圈索引 |
| is_deleted | BOOLEAN | NOT NULL, DEFAULT FALSE | 软删除标记 |
| created_at | TIMESTAMP | NOT NULL, DEFAULT NOW() | 创建时间 |

---

## 3. 外键

| 外键 | 引用表 | 说明 |
|------|--------|------|
| scenario_id | test_scenario.id | 关联测试场景（必需） |

---

## 4. 派生字段

> **注意**：以下字段不落库，查询时动态计算

| 字段 | 计算公式 | 说明 |
|------|----------|------|
| margin | threshold - ploss | 安全余量（>0 安全，<0 危险） |

---

## 5. 索引

| 索引名 | 字段 | 用途 |
|--------|------|------|
| idx_ploss_scenario | scenario_id | 按测试场景查询 |
| idx_ploss_rx_power | rx_power | 阈值表匹配 |
| idx_ploss_ploss | ploss | 损耗值查询 |
| idx_ploss_threshold | threshold | 阈值查询 |
| idx_ploss_fod_result | fod_result | FOD结果筛选 |

---

## 6. EF Core 模型

```csharp
// Models/PlossRecord.cs
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace WCTDataMiner.Models;

[Table("ploss_record")]
[Index(nameof(ScenarioId), Name = "idx_ploss_scenario")]
[Index(nameof(RxPower), Name = "idx_ploss_rx_power")]
[Index(nameof(Ploss), Name = "idx_ploss_ploss")]
[Index(nameof(Threshold), Name = "idx_ploss_threshold")]
[Index(nameof(FodResult), Name = "idx_ploss_fod_result")]
public class PlossRecord
{
    [Key]
    [Column("id")]
    public Guid Id { get; set; } = Guid.NewGuid();

    [Required]
    [Column("scenario_id")]
    public Guid ScenarioId { get; set; }

    [Required]
    [Column("rx_type")]
    public byte RxType { get; set; }

    [Required]
    [Column("rx_power")]
    public short RxPower { get; set; }

    [Required]
    [Column("tx_power")]
    public short TxPower { get; set; }

    [Required]
    [Column("vcoil")]
    public short Vcoil { get; set; }

    [Required]
    [Column("vin")]
    public short Vin { get; set; }

    [Required]
    [Column("isns")]
    public short Isns { get; set; }

    /// <summary>核心判定值：负数表示安全</summary>
    [Required]
    [Column("ploss")]
    public int Ploss { get; set; }

    /// <summary>安全红线：当前功率段阈值</summary>
    [Required]
    [Column("threshold")]
    public int Threshold { get; set; }

    [Required]
    [Column("trigger_count")]
    public short TriggerCount { get; set; } = 0;

    [Required]
    [Column("fod_result")]
    public short FodResult { get; set; } = 0;

    [Required]
    [Column("protocol_type")]
    public byte ProtocolType { get; set; }

    [Required]
    [Column("pwm_duty")]
    public short PwmDuty { get; set; }

    [Required]
    [Column("coil_index")]
    public byte CoilIndex { get; set; }

    [Required]
    [Column("is_deleted")]
    public bool IsDeleted { get; set; } = false;

    [Required]
    [Column("created_at")]
    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;

    [ForeignKey(nameof(ScenarioId))]
    public TestScenario Scenario { get; set; } = null!;

    /// <summary>派生属性：安全余量</summary>
    [NotMapped]
    public int Margin => Threshold - Ploss;
}
```

---

## 7. 动态阈值表

> 阈值根据 RxPower 动态查表（不落库）

| Rx Power 区间 | Threshold | 备注 |
|---------------|-----------|------|
| 0-5000 mW | 350 mW | 低功率最敏感 |
| 5000-10000 mW | 500 mW | |
| 10000-15000 mW | 750 mW | |
| 15000-30000 mW | 1000 mW | |
| 30000-50000 mW | 1250 mW | 高功率 |

```csharp
// Services/ThresholdCalculator.cs
public static int GetThresholdByPower(int rxPower)
{
    if (rxPower <= 5000) return 350;
    if (rxPower <= 10000) return 500;
    if (rxPower <= 15000) return 750;
    if (rxPower <= 30000) return 1000;
    return 1250;
}
```