Debuging Collision detection

I am trying to set up a collision detection so that when the player moves near a door it will open, I have the below set up:

• My door set up:

• My player set up:

And then the OpenDoors.cs script:

 using UnityEngine;
 using System.Collections;
 
 public class OpenDoors : MonoBehaviour {
 
     // To open and close doors via Inspector
     public bool Open_Doors;
     public bool Close_Doors;
 
     // Once the doors has been opened they can be closed again
     private bool door_opened;
 
 
     public GameObject BottomDoors;
     public GameObject TopDoors;
 
     // Store original position of top and bottom doors
     Vector3 TopDoorsOriginPosition;
     Vector3 BottomDoorsOriginPosition;
 
     void Awake()
     {
         TopDoorsOriginPosition = TopDoors.transform.position;
         BottomDoorsOriginPosition = BottomDoors.transform.position;
     }
 
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () {
 
         if(Open_Doors)
         {
             OpenSciFiDoors();
         }
 
         if(door_opened && Close_Doors)
         {
             CloseSciFiDoors();
         }
 
     }
 
     void OnCollisionEnter(Collision collision)
     {
         Open_Doors = true;
     }   
 
     void OpenSciFiDoors()
     {
         TopDoors.transform.position = Vector3.Lerp (TopDoors.transform.position, new Vector3 (2f, 0,TopDoors.transform.position.z ), 0.45f * Time.deltaTime);
         BottomDoors.transform.position = Vector3.Lerp (BottomDoors.transform.position, new Vector3 (2f, 0, BottomDoors.transform.position.z), 0.45f * Time.deltaTime);
 
         // We want to wait till doors reach certain position before they can be closed
         if(TopDoors.transform.position.y > 3 && BottomDoors.transform.position.y < -2.5f)
         {
             door_opened = true;
             Open_Doors = false;
         }
     
     }
 
     void CloseSciFiDoors()
     {
         TopDoors.transform.position = Vector3.Lerp (TopDoors.transform.position, TopDoorsOriginPosition, 0.45f * Time.deltaTime);
         BottomDoors.transform.position = Vector3.Lerp (BottomDoors.transform.position, BottomDoorsOriginPosition, 0.45f * Time.deltaTime);
 
     }
 }

however with the current set up nothing happens when the player moves into the collision box, I know the door script does work if I set Open_Door to true at the start