Electric wheelchair controller

Abstract

An electric wheelchair controller belongs to the field of equipment for the elderly and the disabled, and includes a potentiometer type two dimensional rocking bar, an analog / digital conversion circuit, a circuit with four functional keys, a two nixie tube display circuit, a storage battery voltage detection circuit, a single chip and a minimum system circuit. The single chip serves as a core component of the controller. An analog signal which is output from the two dimensional rocking bar are converted into a digital signal through the analog / digital conversion circuit, and then the digital signal is processed and determined by the single chip so as to control an advance direction and speed of the electric wheelchair; the four keys have the following functions of increasing and decreasing of the speed of the electric wheelchair, sound alarming and on and off of the power source; the two nixie tube is respectively used for displaying the speed of the electric wheelchair and power of the storage battery; and the single chip is provided with an in-system programming (ISP) online download interface which is used for downloading control programs. According to the electric wheelchair controller, the operation is flexible and portable, the cost is low, and the ISP function provided by the controller can meet the requirement of personalized operating habits of drivers.

Description

technical field [0001] The invention relates to a controller, in particular to an electric wheelchair controller suitable for the operation of the elderly, the weak and people with lower limb disabilities / paraplegia. Background technique [0002] my country has entered an aging society, and the aging population is growing rapidly. In addition, the number of patients with lower limb movement disorders caused by diseases and disasters is also increasing significantly. influences. The elderly and disabled electric wheelchairs provide convenience for the travel of the elderly and the disabled. The electric wheelchair controller is a key component of the electric wheelchair. At present, the domestic electric wheelchair market is still in its infancy. The controllers of imported electric wheelchairs mainly include British PG and New Zealand DYNAMIC. The direction control is realized through a rocker, which can be operated with one hand or a few fingers. Direction control (the fo...

AI Technical Summary

Problems solved by technology

There are two main types of domestic electric wheelchair controllers. One is that it can only realize speed adjustment. Its direction control requires the driver to reverse the two direction wheels at the front end of the electric wheelchair, which requires a lot of operating force. It is very inconvenient for people; the function of another domestic electric wheelchair controller is similar to the above-mentioned imported controller, and most of its circuit boards are imported from abroad, but the assembly location is in China, so its price is relatively high , generally between RMB 1800-1000

None of the above-mentioned existing controllers on the market provides an interface for downloading software online, so the control mode cannot be modified at any time according to the driver's operating habits

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