สอบถามการ UPDATE ข้อมูลใน Database ทุกๆ 3 นาที ต้องทำอย่างไรบ้างคะ

  $(document).ready(function() {

        $("#btnButton1").click(function() {

            $.ajax({
               type: "POST",
               url: "status.php",
               data: $("#form1").serialize(),
               success: function(result) {
               window.location='out.php';
               }
             });

        });

<?php
include "connect.php";

$_POST['status'] = isset($_POST["status"]) ? $_POST["status"] : '';
$_POST['latitude'] = isset($_POST["latitude"]) ? $_POST["latitude"] : '';
$_POST['longitude'] = isset($_POST["longitude"]) ? $_POST["longitude"] : '';

if($_POST['status']!='' ) {

   $status = $_POST['status'];
   $latitude = $_POST['latitude'];
   $longitude = $_POST['longitude'];


  $sql = "UPDATE tbbike set status = '".$status."' ,latitude = '".$latitude."' , longitude = '".$longitude."'  WHERE tbbike.bike_id = 1 ";
   $query = $db->query( $sql ) or die();

}

?>