CN211810022U

CN211810022U - Hall effect-based foot support position sensing device

Info

Publication number: CN211810022U
Application number: CN201922469277.XU
Authority: CN
Inventors: 刘峰; 薛祖播
Original assignee: Nanjing Kuailun Intelligent Technology Co Ltd
Current assignee: Nanjing Kuailun Intelligent Technology Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-30
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a Hall effect foot support position sensing device, which comprises a magnet and a Hall device, wherein the Hall device is arranged on a frame and is electrically connected with a controller; the magnet is embedded on the foot support bracket; when the foot support is in a laid-down state, the magnet is far away from the Hall device; when the foot support is in a folding state, the magnet is close to the Hall device, and a space is arranged between the magnet and the Hall device. The Hall device is used as a trigger device of the foot support sensing device, so that the cost is low, mechanical contact is avoided during triggering, mechanical fatigue is avoided during long-term use, and the service life of the assembly is greatly prolonged when the use strength of a vehicle is high; and because the sensitivity of the Hall device is high, when a gap of several millimeters is generated by processing errors and assembly errors, the Hall device can still correctly sense the position of the foot support, and the probability of false triggering is also reduced.

Description

Hall effect-based foot support position sensing device

Technical Field

The utility model belongs to the technical field of electric motor car innovation safety accessory uses, especially, relate to a heel brace position sensing device based on hall effect.

Background

In order to make a two-wheeled scooter be in a state of using at any time, a foot support for making the scooter stand is generally installed on the two-wheeled scooter nowadays. However, in the practical use of the two-wheeled scooter, the phenomenon that the user forgets to withdraw the foot supports of the scooter, so that the foot supports collide with foreign matters on the ground or injure and scratch the shoes of the user, even injure the ankles of the user exists.

In order to improve the safety of the sliding plate, machine type position control is required to be used for detection. The most typical existing mechanical position control scheme is to use a bump switch (fig. 1). The collision switch has simple working principle and completely depends on an internal mechanical structure to complete the conduction and the interruption of a circuit. When the external mechanical arm of the collision switch is collided by external force, the mechanical arm is pressed down to drive the reed inside the collision switch, and the conduction state of the circuit is changed.

The collision switch has the advantages of simple structure, wide application range and no limitation to environmental conditions.

The disadvantages of bump switches are equally evident: the switch can be detected only after mechanical collision occurs, and after the switch is used for a long time, the switch is easy to have mechanical fatigue and cannot work normally.

Disclosure of Invention

To the technical problem, the utility model provides a heel brace position sensing device based on hall effect, before the user used the two-wheeled slide, whether the perception user received the heel brace to safe position. The dangerous driving of the user is avoided, and personal and property losses are caused.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the Hall effect-based foot support position sensing device comprises a magnet and a Hall device, wherein the Hall device is arranged on a frame and is electrically connected with a controller; the magnet is embedded on the foot support bracket. When the foot support is in a put-down state, the magnet is far away from the Hall device, and the Hall device cannot be triggered at the moment. When the foot support is in a folding state, the magnet is close to the Hall device, and a space is arranged between the magnet and the Hall device; and when the magnetic flux passing through the Hall device reaches a trigger threshold value, the level of an output signal of the Hall device is reversed. The controller can directly read the signal level to confirm whether the foot support is in place.

Furthermore, the Hall device comprises a voltage regulator connected with a power supply, and the voltage regulator is respectively connected with the Hall element, the differential amplifier and the Schmitt trigger; meanwhile, the Hall element, the differential amplifier and the Schmitt trigger are sequentially connected; the Schmitt trigger is electrically connected with the controller through the output stage; the voltage regulator, the Hall element, the differential amplifier and the Schmitt trigger are all grounded.

The utility model discloses following beneficial effect has: the Hall device is used as a trigger device of the foot support sensing device, so that the cost is low, mechanical contact is avoided during triggering, mechanical fatigue is avoided during long-term use, and the service life of the assembly is greatly prolonged when the use strength of a vehicle is high; and because the sensitivity of the Hall device is high, when a gap of several millimeters is generated by processing errors and assembly errors, the Hall device can still correctly sense the position of the foot support, and the probability of false triggering is also reduced. Before the user uses the two-wheeled skateboard, the user is sensed whether to put the foot supports in a safe position. The dangerous driving of the user is avoided, and personal and property losses are caused.

Drawings

Fig. 1 is a schematic structural diagram of a crash switch in the prior art.

Fig. 2 is a schematic structural diagram of a hall device according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following embodiments and accompanying drawings.

The hall effect was discovered by the physicist hall in 1879. When current passes through a conductor in a magnetic field, the magnetic field generates a force perpendicular to the moving direction of electrons on the electrons in the conductor, so that a potential difference is generated in two directions perpendicular to the conductor and the magnetic induction line.

According to the action mechanism of the Hall device, a foot support position sensing device without direct mechanical contact is designed.

The magnet is fixed on the foot support of the scooter, the Hall device is fixed on the frame corresponding to the magnet of the foot support, and the Hall device is electrically connected with the controller. When the foot support is in a put-down state, the magnet is far away from the Hall device, and the Hall device cannot be triggered at the moment. When the foot support is in a retracted state, the S pole or the N pole of the magnet is close to the Hall device, and the Hall device is triggered by sensing a magnetic field to generate a level signal; the level signal is sent to the vehicle control part, and the controller detects the high level and can judge that the vehicle foot support is folded.

Fig. 2 shows the internal structure of the hall device. The Hall device comprises a voltage regulator connected with a power supply, and the voltage regulator is respectively connected with the Hall element, the differential amplifier and the Schmitt trigger; meanwhile, the Hall element, the differential amplifier and the Schmitt trigger are sequentially connected; the Schmitt trigger is electrically connected with the controller through the output stage; the voltage regulator, the Hall element, the differential amplifier and the Schmitt trigger are all grounded. When the magnetic flux passing through the Hall device reaches a certain degree, the Hall device is triggered, so that the signal level of the output pin of the Hall device is reversed.

The Hall device is used as a trigger device of the foot support sensing device, so that the cost is low, mechanical contact is avoided during triggering, mechanical fatigue is avoided during long-term use, and the service life of the assembly is greatly prolonged when the use strength of a vehicle is high; and because the sensitivity of the Hall device is high, when a gap of several millimeters is generated by processing errors and assembly errors, the Hall device can still correctly sense the position of the foot support, and the probability of false triggering is also reduced. Before the user uses the two-wheeled skateboard, the user is sensed whether to put the foot supports in a safe position. The dangerous driving of the user is avoided, and personal and property losses are caused.

The above embodiment is only for explaining the utility model discloses a technical thought, can not injecing with this the utility model discloses a protection scope, all according to the utility model provides a technical thought, any change of doing on technical scheme basis all falls into the utility model discloses within the protection scope.

Claims

1. Heel brace position sensing device based on hall effect, its characterized in that:

the device comprises a magnet and a Hall device, wherein the Hall device is arranged on a frame and is electrically connected with a controller; the magnet is embedded on the foot support bracket; when the foot support is in a laid-down state, the magnet is far away from the Hall device; when the foot support is in a folding state, the magnet is close to the Hall device, and a space is arranged between the magnet and the Hall device.

2. The hall effect based temple position sensing apparatus of claim 1 wherein:

the Hall device comprises a voltage regulator connected with a power supply, and the voltage regulator is respectively connected with the Hall element, the differential amplifier and the Schmitt trigger; meanwhile, the Hall element, the differential amplifier and the Schmitt trigger are sequentially connected; the Schmitt trigger is electrically connected with the controller through the output stage; the voltage regulator, the Hall element, the differential amplifier and the Schmitt trigger are all grounded.