Balance detection wheelchair and method based on sound wave temperature measurement

Abstract

The invention discloses a balance detection wheelchair and method based on sound wave temperature measurement. The balance detection wheelchair comprises a sound wave temperature measurement unit, a temperature calculation unit, a balance detection unit and a signal sending unit, wherein the sound wave temperature measuring unit comprises a plurality of sound wave transmitters which are arranged at the position of a wheelchair cushion and transmit sound waves to the periphery, and a plurality of sound wave receivers are arranged at the same horizontal height and receive the transmitted sound waves; the temperature calculation unit is used for judging the environment temperature according to a detected sound wave speed to obtain temperature data in all directions around; the balance detection unit judges whether a wheelchair is balanced or not according to the temperature of the surrounding environment, if not, the wheelchair is in a balanced state, and if so, the wheelchair loses balance; and the signal sending unit is used for sending a signal to a set intelligent terminal after judging that the wheelchair is out of balance. According to the balance detection wheelchair, the surrounding temperature difference is detected through sound waves, the problem that infrared detection may be interfered by surrounding heat sources is avoided, and a more accurate balance detection result is obtained.

Description

technical field [0001] The invention relates to a balance detection wheelchair and a method based on sound wave temperature measurement, belonging to the field of temperature detection. Background technique [0002] The traditional method of detecting the balance of a wheelchair is mainly to achieve balance measurement through a gyroscope. The basic principle of the gyroscope mainly uses the function of the pendulum sensitive element to sense the object that deviates from the equilibrium position. It applies a correction torque to the gyroscope to accurately mark the vertical line of the ground, also known as the gyroscope level. If the rotor shaft in the gyroscope deviates from the vertical line of the ground, the torquer will receive a signal from the output of the pendulum sensitive element, and the torquer will generate a correction torque at this time, and the rotor shaft will screw back to the vertical line of the ground under the action of the torque Location. [00...

AI Technical Summary

Problems solved by technology

[0003] However, the gyroscope is easily affected by its own accuracy when judging the balance of the wheelchair. The sensitivity of many gyroscopes will decrease after long-term use, resulting in misjudgment

Images