修改

app/Http/Controllers/Api/ScreenController.php

@@ -436,6 +436,7 @@ class ScreenController extends BaseController
     public function systemDataList(Request $request){
         $data = $request->all();
         $model = SystemL::select('*')
+            ->where('time','<=', time())
             ->orderBy('time','desc');
 
         if(! empty($data['device_name'])) $model->where('device_name', 'LIKE', '%'.$data['device_name'].'%');