A wheelchair powered by an electric motor. It has the characteristics of labor saving, simple operation, stable speed and low noise. It is suitable for people with lower limb disabilities, high paraplegia or hemiplegia, as well as the elderly and infirm. It is an ideal means of activity or transportation.
The development history of commercial electric wheelchairs can be traced back to the 1950s. In particular, the electric wheelchair with two built-in motors and joystick control has become a template for commercial electric wheelchair products. In the mid-1970s, the emergence of microcontrollers greatly improved the safety and control functions of electric wheelchair controllers.
In order to provide operating function and safety function reference standards for the production and research of electric wheelchairs, the Rehabilitation Department of the National Standards Development Committee of the United States and the North American Assistive Skills Association jointly developed some battery tests, steady-state tests, tilting angle tests, braking tests based on wheelchairs. Electric wheelchair standards with functional characteristics such as distance test, energy consumption test, and obstacle crossing ability test. These test standards can be used to compare different electric wheelchairs and help users decide which wheelchair suits their needs.
Among them, the control algorithm module receives command signals sent by the human-machine interface and detects corresponding environmental parameters through built-in sensors, thereby generating and executing motor control information and fault detection and protection functions.
Speed tracking control is one of the basic functions of the electric wheelchair control system. Its self-sign is that the user adjusts the speed of the wheelchair according to their own comfort requirements by inputting instructions from the device. Some electric wheelchairs also have an automatic troubleshooting function “1″, which will greatly improve the ability of wheelchair users to live independently.
A recent clinical investigation of electric wheelchair control among a group of 200 people showed that many wheelchair users have difficulty operating the wheelchair to varying degrees. The results of this set of clinical surveys also show that nearly half of the people are unable to control wheelchairs with traditional operating methods. The use of automatic driving systems will relieve these people from worries. Many factors determine that research on electric wheelchair control technologies and algorithms is of great significance to wheelchair users.
Post time: Jun-12-2024