Device for monitoring speed of bicycle for children through NFC and control method

Abstract

The invention discloses a device for monitoring the speed of a bicycle for children through NFC and a control method. The device mainly comprises a control unit, a speed measuring unit, an energy conversion unit, an alarm unit and an NFC module. The speed measuring unit, the alarm unit and the NFC module are connected with the control unit respectively. The speed measuring unit comprises at least one permanent magnet and a switch type Hall element sensor circuit. The permanent magnet is installed on a wheel rim. The switch type Hall element sensor circuit collects pulse signals. The controller carries out counting according to pulse signals and figures out the corresponding speed. The controller controls the NFC module to send speed data to a client side in a wireless transmission mode. An alarm circuit is used for giving an alarm when the speed exceeds a set value. The problem that the peril occurrence probability is increased when children ride bicycles in the prior art due to the fact that control over the too high speed is ineffective or a guardian is careless is solved, and meanwhile the purpose of monitoring the speed of the bicycle for children in real time is achieved.

Description

technical field [0001] The invention relates to the technical field of speed measurement, in particular to a device and a control method for monitoring the speed of children's bicycles through NFC. Background technique [0002] With the gradual improvement of people's living standards, people's requirements for the quality of life are also increasing. At present, bicycles are becoming more and more popular, not only because they are environmentally friendly and energy-saving, but also make them more convenient in today's crowded traffic. A good way to apply single-chip microcomputers to bicycles to make them more intelligent has also become a direction of research. When people use bicycles as a means of transportation, they need to know their driving speed, and the alarm device will remind themselves to pay attention to safety, and at the same time, the warning lights will be automatically turned on at night to remind the surrounding vehicles to reduce accidents; when using ...

AI Technical Summary

Problems solved by technology

[0003] There are many types of children's bicycles now. Because children's cognition of speed is not yet mature, they do not understand the possible harm caused by the speed of bicycles. Therefore, parents need to supervise children to avoid being too playful and causing bicycles to go too fast, which will lead to danger.

[0004] In the process of realizing the present invention, the inventor found that in the prior art at least there are children in the process of riding a bicycle, who do not realize that the speed of the vehicle is too fast, which leads to loss of control and dangerous accidents. The important reason for the occurrence is that the existing technology only relies entirely on the guardian's personal attention to monitor the child, and cannot achieve the purpose of real-time monitoring and other defects.