The present disclosure is related to a modular obstacle detection system for walking sticks, formed by an emitter-sensor module, a receiver module and its corresponding clamping mechanisms, a laser sensor, a charging circuit, a microcontroller, a radio frequency circuit and a battery all of them, contained in a transmitter-sensor module, a charging circuit, a microcontroller, a radio frequency circuit, a battery, a vibrating motor, all of them contained in a receiver module, which together detect and alert the blind user about the distance in a surrounding semi-cylindrical radius about the object that potentially will block their path. This alert is of the vibratory type, located in the receiver. The receiver module can be attached to the upper part of the walking stick or used as a keychain. The essential feature of the present invention, is that the system can be adapted to any walking stick, because its components are designed for that purpose, In addition, the transmitter module can be used as a keychain. The vibration alert is activated in the following detection ranges: from 0.1 to 2.3 meters vertically with objects of any size.La presente invención se refiere a un sistema de detección de obstáculos modular para bastón, que está formado por un módulo porta emisor-sensor, un módulo porta receptor y sus correspondientes mecanismos de sujeción, un sensor láser, un circuito de carga, un microcontrolador, un circuito de radio frecuencia y una batería, todos ellos contenidos en un módulo porta emisor-sensor, un circuito de carga, un microcontrolador, un circuito de radio frecuencia, una betería, un motor vibrador, todos ellos contenidos en un módulo porta receptor, que en conjunto detectan y alertan al usuario invidente sobre la distancia en un radio semicilíndrico circundante al usuario del objeto que obstaculiza su camino, esta alerta es de tipo vibratorio, ubicada en el porta receptor. El módulo porta receptor puede ser sujetado sobre la parte superior del bastón
