From 2fd6dc640f0f94ea5c1109aa7a8fd3ae33643dec Mon Sep 17 00:00:00 2001
From: liusuyi <1951119284@qq.com>
Date: Mon, 22 Dec 2025 09:42:03 +0800
Subject: [PATCH] 轨迹重新排序

---
 ard-work/src/main/java/com/ard/work/service/impl/ArdFlightTaskPartServiceImpl.java |   28 ++++++++++++++++++++++++----
 1 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/ard-work/src/main/java/com/ard/work/service/impl/ArdFlightTaskPartServiceImpl.java b/ard-work/src/main/java/com/ard/work/service/impl/ArdFlightTaskPartServiceImpl.java
index b7ca8e4..46c0ef5 100644
--- a/ard-work/src/main/java/com/ard/work/service/impl/ArdFlightTaskPartServiceImpl.java
+++ b/ard-work/src/main/java/com/ard/work/service/impl/ArdFlightTaskPartServiceImpl.java
@@ -15,6 +15,7 @@
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Service;
 import java.util.ArrayList;
+import java.util.Comparator;
 import java.util.Date;
 import java.util.List;
 import java.util.concurrent.ConcurrentHashMap;
@@ -44,19 +45,32 @@
      */
     @Scheduled(fixedRate = 1000)
     public void readTelemetryTask() {
+        long now = System.currentTimeMillis();
         UavTelemetryDataCache.forEach((boxSn, telemetryData) -> {
 
-            // 从状态缓存里取当前状态
+            // 1️⃣ 从状态缓存里取当前状态
             UavState uavState = UavStateCache.get(boxSn);
             if (uavState == null) {
                 return; // 状态不存在,不记录
             }
 
+            // 2️⃣ 使用遥测自身时间戳判断是否还活着
+            long dataTs = telemetryData.getTimestamp(); // 设备时间 / 服务器接收时间
+            if (now - dataTs > 3000) {
+                return; // 超过 3 秒没有新遥测 → 认为已离线或冻结,不记录
+            }
+
+            // 3️⃣ 飞行状态必须是飞行中
+            if(uavState.getFlightControllerState().getFlightStatus()!=2)
+            {
+                return; // 飞行状态不是飞行中,不记录
+            }
+
             UavFlightStateDTO dto = new UavFlightStateDTO(
                     uavState,
-                    telemetryData
+                    telemetryData,
+                    dataTs
             );
-
             addTelemetryData(dto);
         });
     }
@@ -94,7 +108,10 @@
                     .count(dataList.size())
                     .dataPart(blobData)
                     .build();
-            part.setCreateTime(new Date());
+            // 使用 list 中第一条数据的时间作为 createTime
+            long firstTimeMillis = dataList.get(0).getTimestamp();
+            Date createTime = new Date(firstTimeMillis);
+            part.setCreateTime(createTime);
             ardflightTaskPartMapper.insert(part);
 
             log.info("设备 {} 分片保存 {} 条飞行数据到数据库成功", boxSn, dataList.size());
@@ -135,6 +152,9 @@
                 log.error("反序列化 boxSn={} 分片数据失败", boxSn, e);
             }
         }
+        // 按 telemetryData.timestamp 升序排序
+        allData.sort(Comparator.comparingLong(dto -> dto.getTelemetryData().getTimestamp()));
+
         return allData;
     }
 }

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