Method for detecting handholding of handlebar and corresponding walking auxiliary equipment

Abstract

Embodiments of the invention disclose a method for detecting handholding of a handlebar and corresponding walking auxiliary equipment thereof. The detecting method comprises the following steps: at least two contacts made of conductive material are provided, including a first contact and a second contact; the first contact is connected to one end point of a voltage dividing circuit, the second contact is connected to the circuit ground; the voltage dividing circuit is connected to a switching circuit, which is turned on or off according to the output of the voltage dividing circuit; and the switching circuit is connected to a micro control unit controller, which determines whether the hand holds the handlebar based on the change of the switching circuit. The method for detecting handholding of a handlebar adopted by the embodiments of the invention skillfully utilizes the resistance characteristic of the human body to accurately and effectively determine whether the two hands have heldthe handlebar, and can recognize whether the hands holding the handlebars belong to the same person, thereby effectively improving the safety performance of walking auxiliary equipment.

Description

technical field [0001] The present invention relates to a walking assisting device used for walking or walking of the elderly, the disabled, and young children, and in particular to a method for detecting whether the user's hands are holding the handlebar of the walking assisting device applied to the assisting device and its Appropriate walking aids. Background technique [0002] As an auxiliary tool for safe walking, the walking assisting device has been widely used in situations where the elderly and the like go shopping or walking. A walking aid generally includes front and rear wheels, a main body, and a handle (handle) connected to the main body. The user can walk safely by holding the handlebar and running the wheel while supporting the body. At present, electric walking aids have been developed in the market. The motor drives the wheels to walk, and has a braking function on downhill and other places, and has an auxiliary upward function on uphill. When the electr...

AI Technical Summary

Problems solved by technology

In practical applications, both of the above-mentioned solutions have security problems: in the first solution, because only one handlebar has a capacitive sensor and the other handlebar has no sensor, when the user holds the sensor handlebar with one hand as a support , when leaning down to put some items into the basket or take items from the basket, the walking assistance device will mistakenly think that the user has held the handlebars at this time and generate a forward driving force. If the walking assistance device generates The power assist in the same direction as the thrust will create a risk of falling for users with inconvenient legs and feet

Option 2 Although capacitive sensors are installed on both handlebars, the capacitive sensors can only detect whether someone is holding the handlebars, but cannot judge whether the same person is holding the handlebars with both hands; when at least two elderly people stop at each other Greetings, when chatting, the two people each hold a handlebar of the walking assist device. The walking assist device will misjudge that the old man's hands are already on the handlebars, and cannot recognize the two hands of different people. The device generates thrust, and the walking aid will generate assistance in the direction of the thrust, which may cause the elderly to fall

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