How do I add anti-touch functionality to the Wheelchair Lifts floor?

When you mention anti-touch functionality on a wheelchair lift floor, it usually refers to safety contact edges (anti-collision / anti-squeeze sensors) installed on the edges of the lift platform or under the floor. These sensors prevent the lift from descending if it comes into contact with an obstruction (like a person's foot, wheelchair part, or object).
Here's how you can add and connect them:
1. Components Required
Safety contact edge strip (pressure-sensitive rubber strip with embedded switch or sensor wire).
Relay or safety controller module (depending on your control system).
Wiring to the main control circuit of the lift (low-voltage, typically 24V).
Emergency stop integration (so if the strip is triggered, it stops or reverses the lift).
2. Installation on Floor
Mount the safety contact strip along the lower edge of the lift platform (bottom of the floor plate).
The strip should be continuous and cover all exposed edges where entrapment might occur.
Ensure it is slightly protruding so that even light pressure will activate it.
3. Electrical Connection
Most wheelchair lifts use a 24V DC safety circuit. The wiring is normally done in series with the safety chain, which already includes:
Emergency stop button
Door interlocks
Overload sensor
Connection steps:
Identify the safety circuit terminals in the lift's control box (often marked as "SAFETY IN / OUT" or in series with E-Stop).
Wire the contact edge sensor in series with this safety circuit.
Normally Closed (NC) type: circuit is closed when safe, opens when pressed → lift stops.
If your strip is Normally Open (NO), use a safety relay to convert the signal.
Test by pressing the contact edge → the lift should stop immediately (or reverse slightly if the controller supports auto-reverse).
4. Control Logic
When not pressed → circuit closed → lift can operate normally.
When pressed (touch/obstruction detected) → circuit opens → controller interprets it as a fault/obstruction → lift stops.
Some advanced controllers can be programmed to reverse upward slightly for extra safety.
5. Important Notes
Always follow your local lift/elevator safety codes. In many regions, safety edges are mandatory for accessibility lifts.
Use shielded cables for sensor wiring to avoid false triggers.