Parking space electromagnetic lock

Abstract

The invention relates to the technical field of intelligent parking space locks, and particularly discloses a parking space electromagnetic lock which comprises a lock groove, a lock body, a key and control equipment, the lock groove is formed in a parking space, the control equipment comprises an electromagnet and a controller, and the electromagnet is installed at the bottom of the lock groove and electrically connected with the controller; the lock body is arranged in the lock groove in the vertical direction, and a spring is arranged between the lower end of the lock body and the electromagnet. The spring is provided with a plurality of iron sheets at intervals in the longitudinal direction, when the spring is in a compressed state, the iron sheets are attached together, and the controller is used for receiving a control signal of a key and controlling on-off of the electromagnet according to the control signal of the key. The intelligent vehicle lock aims at solving the problems that a lock body of an existing intelligent vehicle lock is lifted and placed horizontally in an overturning mode, the overturning response time is long, and the lock body is prone to being collided and damaged by a vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent parking locks, and particularly relates to a parking space electromagnetic lock. Background Art

[0002] Existing intelligent parking locks generally adopt a flip - type structure design, and the lock body is driven by a motor to flip vertically to realize the opening and closing management of the parking space. Although this technical solution realizes automatic control to a certain extent, it still has the following significant defects in practical applications: The flip - type structure relies on complex mechanical components such as gear transmission and shaft hinges. Long - term and frequent operation easily causes key components, such as motor reducers and bearings, to fail due to wear or fatigue, resulting in problems such as jamming, abnormal noise, and even structural fracture. In addition, the contact part between the lock body and the ground is prone to deformation under repeated impacts, resulting in an offset of the flip trajectory and aggravating mechanical losses. The existing design has strict requirements for the flatness and hardness of the installation ground. In scenarios where asphalt softens, floor tiles loosen, or on sloping road surfaces, the lock body is prone to mechanical deformation due to uneven force during flipping. For example, on a sloping parking space or an uneven ground, the flip - up lock arm cannot accurately return to its position due to gravity offset. In addition, in the existing design, since there is still a part of the protrusion left in the parking space after flipping, it is difficult to adapt to special vehicle types, such as low - chassis sports cars. The flipping action takes 1 - 2 seconds, which is likely to cause congestion during peak vehicle queuing hours. In case of an emergency, such as a fire escape, if the vehicle runs over the lock arm when it is not fully lowered, it may cause damage to the vehicle body. It is urgent to overcome the defects of the existing technology through innovation in the lock structure and optimization of functions. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the technical problem solved by the present invention is to provide a parking space electromagnetic lock, which solves the problems that the existing intelligent parking lock uses a flipping method to realize the raising and lowering of the lock body, has a long flipping response time, and the lock body is easily damaged by vehicle collision.

[0004] To solve the above problems, the technical solution adopted by the present invention is: A parking space electromagnetic lock, including a lock groove, a lock body, a key, and a control device. The lock groove is opened in the parking space. The control device includes an electromagnet and a controller. The electromagnet is installed at the bottom of the lock groove and is electrically connected to the controller; the lock body is arranged vertically in the lock groove, and a spring is provided between the lower end of the lock body and the electromagnet; a plurality of iron sheets are arranged at intervals along the longitudinal direction of the spring. When the spring is in a compressed state, the plurality of iron sheets are attached together. The controller is used to receive the control signal of the key and control the on - off of the electromagnet according to the key control signal.

[0005] The technical principle of this solution is: the controller controls the on and off of the electromagnet to control whether the electromagnet is magnetic. When the electromagnet is powered on, the magnetic force of the electromagnet adsorbs the nearest iron sheet, so that the iron sheet sticks to the electromagnet, so that the iron sheet is magnetized, and then adsorbs the next iron sheet, so that the iron sheets are magnetically attracted together in turn, thereby compressing the spring, and then driving the lock body to descend, so that the lock body is stored in the lock slot. When the vehicle leaves the parking space, the key sends a signal to the controller, and the controller controls the electromagnet to cut off the power according to the received signal, so that the electromagnet loses its magnetism and no longer adsorbs the iron sheet; then the lock body pops out of the lock slot under the elastic force of the spring, and the lock body rises to lock the parking space.

[0006] The beneficial effects of this solution are: the lifting and lowering of the lock body is controlled by using magnetic attraction in combination with a spring and an iron sheet; the controller controls the on and off of the electromagnet when receiving a key signal to achieve a rapid response to the lifting and lowering of the lock body; the response speed is faster than the traditional method of controlling the flipping of the lock body with a flip motor; the lock body can be quickly lowered, allowing the owner to quickly drive into the parking space.

[0007] Furthermore, the lock body is formed into an inverted U shape by two vertical rods and a horizontal connecting rod, and the lock groove is correspondingly set into an inverted U shape. The U-shaped structure can reduce the overall weight of the lock body, and at the same time, with the U-shaped lock groove, the width of the lock groove can meet the vertical rod width requirement, thereby reducing the excavation amount of the lock groove.

[0008] Furthermore, two springs and electromagnets are provided correspondingly, and the two springs and electromagnets are respectively arranged at the ends of the two vertical rods of the lock body. The two vertical rods of the lock body are supported by the symmetrically arranged springs, so that the lock body is evenly stressed and is not easily offset during the rising or falling process of the lock body.

[0009] Furthermore, an infrared sensor is provided at the upper end of the lock body, and the infrared sensor is used to detect whether the vehicle has left. The output end of the infrared sensor is electrically connected to the input end of the controller. The controller is also used to control the electromagnet to cut off the power after the delay setting time according to the infrared sensor signal. When the vehicle is parked in the parking space, the vehicle chassis covers the car lock, and the infrared sensor transmits an infrared signal to detect whether the vehicle is in the parking space; when the vehicle leaves, the infrared signal is no longer blocked, so the controller controls the electromagnet to cut off the power after a delay for a period of time according to the received infrared signal, and then the lock body will rise under the elastic force of the spring, thereby locking the parking space. Through the delay, it is prevented that the lock body bounces up and damages the vehicle when the vehicle is only adjusting the parking angle or not keeping a safe distance from the car lock.

[0010] Further, a slider is fixed to the end of the vertical rod of the lock body, and a sliding groove for the slider to be inserted into is formed in the lock groove in the vertical direction. Through the cooperation of the slider and the sliding groove, the lock body is guided and limited during the lifting process, so that the lock body is not easily deflected during the lifting process.

[0011] Further, the controller is electrically connected to a first ultra-wideband wireless communication module and a first Bluetooth module. The key is provided with a second ultra-wideband wireless communication module and a second Bluetooth module. The second Bluetooth module broadcasts an encrypted beacon through Bluetooth. After receiving the encrypted beacon, the first Bluetooth module wakes up the first ultra-wideband wireless communication module. The first ultra-wideband wireless communication module communicates with the second ultra-wideband wireless communication module to obtain the real-time position information of the key. The controller is used to calculate the distance between the key and the lock body and the moving direction of the key according to the real-time position information of the key; the controller is also used to control the electromagnet to be energized when the key moves close to the lock body and the distance is less than the set distance, and to control the electromagnet to be de-energized when the key moves away from the lock body and the distance is greater than the set distance.

[0012] Using the Bluetooth module as a low-power entry for permanent monitoring, only waking up the high-precision UWB module after detecting a valid encrypted beacon, avoiding the energy consumption burden caused by the continuous operation of the latter. At the same time, using the time-of-flight ranging principle of UWB, the real-time distance between the key and the lock body is accurately calculated through two-way signal interaction. At the security level, the encrypted beacon broadcast by Bluetooth realizes identity pre-verification through the device unique ID and dynamic token, preventing relay attacks. The fusion judgment of the moving direction and speed, such as continuous approach, and speed > 0.3m / s, and the stable shortening trend of the distance, further filters out accidental signal fluctuations or malicious interference, ensuring the reliability of the trigger logic. Thus, the lock of the vehicle is unlocked and locked without feeling, realizing "zero operation" control. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of Embodiment 1.

[0014] Figure 2 It is a schematic diagram of Embodiment 2.

[0015] Figure 3 It is a schematic diagram of Embodiment 3. Detailed Description of the Invention

[0016] The following is a further detailed description through specific embodiments: The reference numerals in the accompanying drawings of the specification include: lock body 1, lock groove 2, spring 3, iron sheet 4, electromagnet 5, sliding groove 6, slider 7, infrared sensor 8.

[0017] Embodiment 1 is basically as shown in the appendix Figure 1As shown in the figure: A parking space electromagnetic lock includes a lock groove 2, a lock body 1, a key, and a control device. The lock groove 2 is opened in the parking space. The control device includes an electromagnet 5 and a controller. The electromagnet 5 is installed at the bottom of the lock groove 2 and is electrically connected to the controller. The controller is installed close to the lock body 1. The lock body 1 is arranged vertically in the lock groove 2, and a spring 3 is provided between the lower end of the lock body 1 and the electromagnet 5. A plurality of iron sheets 4 are arranged at intervals along the longitudinal direction of the spring 3. When the spring 3 is in a compressed state, the plurality of iron sheets 4 are attached together. The controller is used to receive the control signal of the key and control the on-off of the electromagnet 5 according to the key control signal.

[0018] The lock body 1 is composed of two vertical rods and a horizontal connecting rod to form an inverted U shape, and the lock groove 2 is correspondingly arranged in an inverted U shape. There are two corresponding springs 3 and electromagnets 5. The two springs 3 and electromagnets 5 are respectively arranged at the ends of the two vertical rods of the lock body 1. The U-shaped structure can reduce the overall weight of the lock body 1. At the same time, in cooperation with the U-shaped lock groove 2, the width of the excavation of the lock groove 2 only needs to meet the width requirements of the vertical rods, reducing the excavation amount of the lock groove 2.

[0019] The on-off of the electromagnet 5 is controlled by the controller to control whether the electromagnet 5 has magnetism. When the electromagnet 5 is powered on, the magnetic force of the electromagnet 5 adsorbs the nearest iron sheet 4, making the iron sheet 4 stick to the electromagnet 5, so that the iron sheet 4 is magnetized, and then adsorbs the next iron sheet 4, so as to magnetically adsorb the iron sheets 4 together in sequence, thereby realizing the compression of the spring 3, and then driving the lock body 1 to descend, so that the lock body 1 is received in the lock groove 2. When the vehicle leaves the parking space, a locking control signal is sent to the controller by the key. The controller controls the electromagnet 5 to power off according to the received signal, so that the electromagnet 5 loses magnetism and no longer adsorbs the iron sheet 4. Furthermore, the lock body 1 pops out of the lock groove 2 under the elastic force of the spring 3, realizing the rising of the lock body 1 to lock the parking space. When it is necessary to drive into the parking space, a unlocking control signal is sent to the controller by the key again, and the controller controls the electromagnet 5 to be powered on.

[0020] Embodiment 2 is basically as shown in the appendix Figure 2 As shown in the figure. The same parts as those in Embodiment 1 will not be described in detail. The differences are as follows: The controller is electrically connected with a first ultra-wideband wireless communication module and a first Bluetooth module. The key is provided with a second ultra-wideband wireless communication module and a second Bluetooth module. The second Bluetooth module broadcasts an encrypted beacon through Bluetooth. After receiving the encrypted beacon, the first Bluetooth module wakes up the first ultra-wideband wireless communication module. The first ultra-wideband wireless communication module communicates with the second ultra-wideband wireless communication module to obtain the real-time position information of the key. The controller is used to calculate the distance between the key and the lock body 1 and the moving direction of the key according to the real-time position information of the key. The controller is also used to control the electromagnet 5 to be powered on when the key moves close to the lock body 1 and the distance is less than the set distance, and to control the electromagnet 5 to power off when the key moves away from the lock body 1 and the distance is greater than the set distance.

[0021] Using the Bluetooth module as a low-power entry for permanent monitoring, the high-precision UWB module is only awakened after detecting a valid encrypted beacon, avoiding the energy consumption burden caused by the continuous operation of the latter. At the same time, using the time-of-flight ranging principle of UWB, the real-time distance between the key and the lock body 1 is accurately calculated through two-way signal interaction. At the security level, the encrypted beacon broadcast by Bluetooth realizes identity pre-verification through the device unique ID and dynamic token, preventing relay attacks. The combined judgment of the moving direction and speed, such as continuously approaching, and the speed > 0.3m / s, and the distance shortening trend is stable. When the distance between the lock body 1 and the key meets the set distance, the electromagnet 5 is controlled to be energized. In this embodiment, the set distance is 5m. Accidentally signal fluctuations or malicious interferences are filtered out in one step, ensuring the reliability of the trigger logic. Thus, the lock of the vehicle is unlocked and locked without feeling, realizing the "zero operation" control.

[0022] Embodiment 3 is basically as shown in the appendix Figure 3 As shown, the same parts as those in Embodiment 1 will not be described in detail. The differences are as follows: A slider 7 is fixed to the end of the vertical rod of the lock body 1, and a chute 6 for the slider 7 to be embedded is opened in the lock groove 2 in the vertical direction. Through the cooperation of the slider 7 and the chute 6, the lock body 1 is guided and limited during the lifting process, so that the lock body 1 is not easily deflected during the lifting process.

[0023] An infrared sensor 8 is provided at the upper end of the lock body 1. The infrared sensor 8 is used to detect whether the vehicle has left. The output end of the infrared sensor 8 is electrically connected to the input end of the controller. The controller is also used to control the electromagnet 5 to be powered off after a set delay time according to the signal of the infrared sensor 8. When the vehicle is parked in the parking space, the vehicle chassis covers the vehicle lock, and the infrared sensor 8 emits an infrared signal to detect whether the vehicle is in the parking space; when the vehicle leaves, the infrared signal is no longer blocked, so that the controller controls the electromagnet 5 to be powered off after a certain delay time according to the received infrared signal, and then the lock body 1 will rise under the elastic force of the spring 3 to lock the parking space. Through the delay, it is avoided that the lock body 1 pops up and damages the vehicle when the vehicle is only adjusting the parking angle or not keeping a safe distance from the vehicle lock.

[0024] The above are only embodiments of the present invention. Common knowledge such as specific structures and characteristics known in the solutions is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A parking electromagnetic lock, characterized in that: It includes a lock slot, a lock body, a key and a control device. The lock slot is opened in the parking space. The control device includes an electromagnet and a controller. The electromagnet is installed at the bottom of the lock slot and is electrically connected to the controller. The lock body is arranged in the lock slot along the vertical direction, and a spring is arranged between the lower end of the lock body and the electromagnet. The spring is provided with a plurality of iron sheets at intervals along the longitudinal direction. When the spring is in a compressed state, the plurality of iron sheets are attached together. The controller is used to receive the control signal of the key and control the on and off of the electromagnet according to the key control signal.

2. The parking electromagnetic lock according to claim 1, characterized in that: The lock body is formed into an inverted U shape by two vertical rods and a horizontal connecting rod, and the lock groove is correspondingly arranged into an inverted U shape.

3. The parking electromagnetic lock according to claim 2, characterized in that: The spring and the electromagnet are provided with two corresponding ones, and the two springs and the two electromagnets are respectively arranged at the two vertical rod ends of the lock body.

4. The parking electromagnetic lock according to claim 1, characterized in that: An infrared sensor is provided at the upper end of the lock body, and the infrared sensor is used to detect whether the vehicle has left. The output end of the infrared sensor is electrically connected to the input end of the controller. The controller is also used to control the electromagnet to cut off power after a set delay time according to the infrared sensor signal.

5. The parking electromagnetic lock according to claim 2, characterized in that: A sliding block is fixed to the end of the vertical rod of the lock body, and a sliding groove for the sliding block to be embedded is formed in the lock groove along the vertical direction.

6. The parking electromagnetic lock according to claim 1, characterized in that: The controller is electrically connected to a first ultra-wideband wireless communication module and a first Bluetooth module, the key is provided with a second ultra-wideband wireless communication module and a second Bluetooth module, the second Bluetooth module broadcasts an encrypted beacon via Bluetooth, the first Bluetooth module wakes up the first ultra-wideband wireless communication module after receiving the encrypted beacon, the first ultra-wideband wireless communication module communicates with the second ultra-wideband wireless communication module to obtain the real-time position information of the key, the controller is used to calculate the distance between the key and the lock body, and the moving direction of the key according to the real-time position information of the key; the controller is also used to control the electromagnet to be energized when the key moves close to the lock body and the distance is less than the set distance, and to control the electromagnet to be de-energized when the key moves away from the lock body and the distance is greater than the set distance.

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