A hall sensor-based electric bicycle helmet alcohol detection system

Abstract

The application discloses a kind of electric bicycle helmet alcohol detection systems based on hall sensor, to improve the safety of driver.The system includes helmet alcohol detection system and car speed control system, both are linked through wireless communication.Helmet alcohol detection system is built-in alcohol detection sensor module, human existence detection module and helmet interface detection module, for judging whether driver drinks and whether helmet is correctly worn.Car speed control system detects the voltage output by hall sensor in vehicle handlebar to judge vehicle driving state;when voltage is non-zero (vehicle driving), the system automatically queries the state of helmet alcohol detection system.If driver drinks or does not correctly wear helmet is detected, the system will make the vehicle unable to drive through car speed control system, and trigger sound and light alarm to remind driver.The application combines wireless communication and sensor technology, can effectively prevent drunk driving and not wearing helmet and other dangerous behaviors, significantly improve the safety of driver.

Description

Technical Field

[0001] This invention relates to the field of electric bicycle safe driving technology, and in particular to an electric bicycle helmet alcohol detection system based on a Hall sensor. Background Technology

[0002] With the rapid development of the national economy, electric bicycles have become a common means of transportation in daily life. However, traffic accidents involving electric bicycles are frequent, causing numerous injuries and deaths. The main causes include speeding and not wearing helmets, with not wearing a helmet causing particularly serious consequences. Furthermore, driving an electric bicycle under the influence of alcohol is also illegal and seriously threatens road traffic safety. Traditional electric bicycle safety designs do not address these issues. Therefore, designing a system that can detect whether the rider has been drinking and ensure proper helmet wearing is of great significance for improving the safety of electric bicycle riders. Summary of the Invention

[0003] The purpose of this invention is to provide an alcohol detection system for electric bicycle helmets based on Hall sensors, aiming to upgrade and transform traditional electric bicycles, solve the shortcomings of insufficient safety driving facilities in traditional electric bicycles, and provide electric bicycle riders with a convenient and safe driving protection system.

[0004] The technical solution of the invention: An electric bicycle helmet alcohol detection system based on Hall effect sensors includes a helmet alcohol detection system and a vehicle speed control system, which are linked together via wireless communication.

[0005] Specifically, the helmet alcohol detection system is installed inside the helmet and includes a microprocessor and a human presence detection module, an alcohol detection sensor module, a socket detection circuit for detecting whether the helmet socket is properly plugged in, and a wireless Bluetooth serial port module for communicating with the vehicle speed control system.

[0006] Specifically, the vehicle speed control system is installed on the electric bicycle and includes a second microprocessor and a Hall sensor voltage acquisition circuit and a speed control circuit in the handlebars of the electric bicycle connected thereto, as well as a wireless Bluetooth serial port module for communicating with the helmet alcohol detection system.

[0007] Preferably, the second microprocessor of the vehicle speed control system is also connected to an audible and visual alarm circuit.

[0008] Preferably, the alcohol detection sensor module detects whether the electric bicycle driver has consumed alcohol.

[0009] Preferably, the buckle detection circuit uses a Hall sensor to detect signals.

[0010] Preferably, the vehicle speed control system uses a step-down circuit to reduce the voltage of the electric bicycle's power supply before supplying power to itself.

[0011] More preferably, the second microprocessor is an STM32 series microcontroller.

[0012] More preferably, the wireless Bluetooth serial port module uses HC-06 to achieve stable communication.

[0013] Advantages of this invention: This invention provides an electric bicycle helmet alcohol detection system based on a Hall sensor. Combining the advantages of mature wireless communication and sensor technologies, it effectively prevents dangerous behaviors such as drunk driving and not wearing a helmet, thus providing effective protection for electric bicycle riders. First, a Hall sensor detects whether the electric bicycle rider is wearing a helmet. If the rider is wearing a helmet, an alcohol detection sensor detects whether the rider has consumed alcohol. If the rider has not consumed alcohol, the electric bicycle operates normally; otherwise, it cannot move. The system has a simple structure, is easy to implement, and significantly improves the safety of electric bicycle riding. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an electric bicycle helmet alcohol detection system based on a Hall sensor, as described in this invention. Figure 2 This is a block diagram illustrating the principle of an electric bicycle helmet alcohol detection system based on a Hall sensor, as described in this invention. Figure 3 This is a schematic diagram of the vehicle speed control system of an electric bicycle helmet alcohol detection system based on a Hall sensor, as described in this invention. Figure 4 This is a control flow diagram of an electric bicycle helmet alcohol detection system based on a Hall sensor, as described in this invention. Detailed Implementation

[0015] To facilitate those skilled in the art to understand the technical content of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1As shown in the figure, this invention discloses an electric bicycle helmet alcohol detection system based on a Hall sensor, comprising a helmet alcohol detection system for detecting whether the helmet is properly worn and whether alcohol has been consumed, and a vehicle speed control system. The helmet alcohol detection system and the vehicle speed control system communicate via a wireless Bluetooth serial port module HC-06. The helmet alcohol detection system is installed inside the helmet and includes a first microprocessor and connected to it an alcohol detection sensor module, an infrared human body detection circuit, a socket detection circuit for detecting whether the helmet socket is properly inserted, and the wireless Bluetooth serial port module HC-06 for communication with the vehicle speed control system. The vehicle speed control system is installed on the electric bicycle and includes a second microprocessor and connected to it an electric bicycle handlebar Hall sensor voltage acquisition circuit, a speed control circuit, an audible and visual alarm circuit, and the wireless Bluetooth serial port module HC-06 for communication with the helmet alcohol detection system.

[0017] Specifically, the control process of this solution is as follows: Figure 4 As shown, when the electric bicycle rider unlocks the bicycle with the key, the speed control system searches for a signal from the helmet's alcohol detection system via a wireless Bluetooth serial port. If the helmet's alcohol detection system is not detected, the electric bicycle will not be able to move normally, and an alarm will be triggered via sound and light. If the helmet's alcohol detection system signal is detected, it means that the helmet is on and the rider has not consumed alcohol.

[0018] The vehicle speed control system determines whether the electric bicycle is moving by detecting the voltage output of the Hall sensor in the handlebars. If voltage is detected, it uses a wireless serial port to query the helmet alcohol detection system to confirm whether the helmet is worn properly and whether the user has consumed alcohol. The vehicle speed control system is powered by the electric bicycle's power supply using a step-down circuit. Its microprocessor is an STMicroelectronics STM32F103C8T6, and the wireless Bluetooth serial port uses an HC-06 transceiver for communication.

[0019] The helmet alcohol detection system reads signals from the alcohol detection sensor module, the infrared human body detection signal, and the buckle signal. When all three signals are present, the helmet alcohol detection system sends a signal to the vehicle speed control system indicating that it is safe to drive; otherwise, it sends a signal to the vehicle speed control system indicating that it is not safe to drive. The helmet alcohol detection system is powered by a button battery, and the buckle signal detection circuit uses a Hall sensor to detect whether the helmet buckle is properly inserted.

[0020] The above embodiments are merely specific implementations of the present invention, and while their descriptions are detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these obvious substitutions all fall within the protection scope of the present invention.

Claims

1. An alcohol detection system for electric bicycle helmets based on Hall effect sensors, characterized in that: The system includes a helmet alcohol detection system for detecting whether someone has been drinking and whether they are wearing a helmet, and a vehicle speed control system, wherein the helmet alcohol detection system and the vehicle speed control system communicate wirelessly.

2. The electric bicycle helmet alcohol detection system according to claim 1, characterized in that: The helmet alcohol detection system is installed on the helmet and includes an alcohol detection sensor module, a first microprocessor and a human presence detection module connected thereto, a detection module for whether the helmet socket is working correctly, and a wireless communication serial port module for communicating with the vehicle speed control system.

3. The electric bicycle helmet alcohol detection system according to claim 1, characterized in that: The vehicle speed control system is installed on the electric bicycle and includes a second microprocessor, a Hall sensor output voltage acquisition circuit in the handlebars, a vehicle speed control circuit, an audible and visual alarm circuit, and a serial port module for wireless communication with the helmet alcohol detection system.

4. The electric bicycle helmet alcohol detection system according to claim 2, characterized in that: The buckle detection circuit uses a Hall sensor to detect signals.

5. The electric bicycle helmet alcohol detection system according to claim 2, characterized in that: The alcohol detection sensor module in the helmet detection system is used to detect whether the driver has been drinking alcohol. If alcohol is detected, the electric bicycle will be unable to move through the vehicle speed control system.

6. The electric bicycle helmet alcohol detection system according to claim 2, characterized in that: The helmet detection system uses an infrared human body detection circuit to detect whether the driver is wearing a helmet.

7. The electric bicycle helmet alcohol detection system according to claim 3, characterized in that: The vehicle speed control system determines whether the electric bicycle is in motion by collecting the voltage from the Hall sensor output voltage acquisition circuit inside the handlebars.

8. The electric bicycle helmet alcohol detection system according to claim 3, characterized in that: The serial communication module mentioned above uses a Bluetooth serial communication module to achieve communication between the two.

9. The electric bicycle helmet alcohol detection system according to claim 3, characterized in that: The speed control circuit determines whether the electric bicycle is in a normal driving state or a stopped state based on the output signal of the helmet alcohol detection system.

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