diff --git a/app/Entities/CollectorEntity.php b/app/Entities/CollectorEntity.php
index dd41dfc..91945e8 100644
--- a/app/Entities/CollectorEntity.php
+++ b/app/Entities/CollectorEntity.php
@@ -9,4 +9,24 @@ class CollectorEntity extends CommonEntity
     const PK = CollectorModel::PK;
     const TITLE = CollectorModel::TITLE;
     //기본기능용
+    public function getTrafficInfoUID(): int
+    {
+        return $this->attributes['trafficinfo_uid'];
+    }
+    public function getIn(): int
+    {
+        return $this->attributes['in'];
+    }
+    public function getOut(): int
+    {
+        return $this->attributes['out'];
+    }
+    public function getRawIn(): int
+    {
+        return $this->attributes['raw_in'];
+    }
+    public function getRawOut(): int
+    {
+        return $this->attributes['raw_out'];
+    }
 }
diff --git a/app/Models/CollectorModel.php b/app/Models/CollectorModel.php
index d66c29f..5f65462 100644
--- a/app/Models/CollectorModel.php
+++ b/app/Models/CollectorModel.php
@@ -26,4 +26,12 @@ class CollectorModel extends CommonModel
     {
         parent::__construct();
     }
+
+    public function getLastEntity($uid): CollectorEntity
+    {
+        return $this
+            ->where('trafficinfo_uid', $uid)
+            ->orderBy('created_at', 'DESC')
+            ->first(); // 첫 번째 레코드(=가장 최신)
+    }
 }
diff --git a/app/Services/CollectorService.php b/app/Services/CollectorService.php
index e78d481..6c61ab9 100644
--- a/app/Services/CollectorService.php
+++ b/app/Services/CollectorService.php
@@ -108,18 +108,18 @@ class CollectorService extends CommonService
             log_message('warning', $message);
             throw new \Exception($message);
         }
-        // 이전 데이터를 조회하여 Rate 계산에 사용 (trafficModel 사용)
-        $lastEntry = $this->model->getLastEntryByInfoUid($trafficEntity->getPK());
+        // 이전 데이터를 조회하여 Rate 계산에 사용
+        $lastEntity = $this->model->getLastEntity($trafficEntity->getPK());
         $inKbitsSec = 0.0;
         $outKbitsSec = 0.0;
         // 이전 데이터가 있어야만 Rate 계산 가능
-        if ($lastEntry !== null) {
-            $lastTime = Time::parse($lastEntry['created_at'])->getTimestamp();
+        if ($lastEntity !== null) {
+            $lastTime = Time::parse($lastEntity->getCreatedAt())->getTimestamp();
             $deltaTime = Time::now()->getTimestamp() - $lastTime;
             if ($deltaTime > 0) {
                 // Raw Octets 값의 차분 계산
-                $deltaInOctets = $currentInOctets - $lastEntry['raw_in_octets'];
-                $deltaOutOctets = $currentOutOctets - $lastEntry['raw_out_octets'];
+                $deltaInOctets = $currentInOctets - $lastEntity->getRawIn();
+                $deltaOutOctets = $currentOutOctets - $lastEntity->getRawOut();
 
                 // Kbit/s 계산: (Delta_Octets * 8 bits) / Delta_Time_Seconds / 1000 (-> Kbit/s)
                 $inKbitsSec = ($deltaInOctets * 8) / $deltaTime / 1000;