CN111798695A - Public parking stall automation switch banister system - Google Patents
Public parking stall automation switch banister system Download PDFInfo
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- CN111798695A CN111798695A CN202010684325.1A CN202010684325A CN111798695A CN 111798695 A CN111798695 A CN 111798695A CN 202010684325 A CN202010684325 A CN 202010684325A CN 111798695 A CN111798695 A CN 111798695A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/149—Traffic control systems for road vehicles indicating individual free spaces in parking areas coupled to means for restricting the access to the parking space, e.g. authorization, access barriers, indicative lights
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
- G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
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Abstract
The invention discloses an automatic switch barrier gate system for public parking spaces, and particularly relates to the field of barrier gates. According to the invention, the information of vehicles coming and going is received through the central control system, and then the information is transmitted to the in-out parking space control module, so that the barrier gate automatically rises and falls.
Description
Technical Field
The invention relates to the technical field of barriers, in particular to an automatic switch barrier system for a public parking space.
Background
The barrier gate is also called a car stopper, is a channel entrance and exit management device specially used for limiting the running of motor vehicles on roads, is used for managing the entrance and exit of the vehicles, and is widely applied to road toll stations, parking lot vehicle channels and the like. Public parking stall banister is the facility that can go up and down to be used for the interception at public parking stall mouth.
However, in practical use, due to universality of public parking spaces, great workload is brought by manually controlling the barrier gates, so that the application of the barrier gates on the public parking spaces is not common, the safety of the public parking spaces is reduced, and the management difficulty of the public parking spaces is improved.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide an automatic switch barrier gate system for public parking spaces, which receives information of vehicles coming from and going to a central control system, and transmits the information to an in-out parking space control module to automatically raise and lower the barrier gate, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the parking space detection system comprises a central control system and is characterized in that the central control system is provided with a power supply unit, the central control system is provided with a parking space inlet control module, the parking space inlet control module is provided with a parking space inlet detection module, the parking space outlet control module is provided with a parking space outlet detection module, the parking space inlet control module is provided with a barrier gate control module, the barrier gate control module is provided with a barrier gate, the parking space inlet detection module is provided with an infrared detector, the parking space inlet detection module is provided with a parking space inlet reaction device, the parking space outlet detection module is provided with an infrared detector, the parking space outlet detection module is provided with a parking space outlet reaction device, the barrier gate control module is provided with a gate opening control module, the barrier gate control module is provided with a gate closing control module, and the gate opening control module is connected with the.
Preferably, the central control system is provided with a camera module, the central control system is provided with a display module, the display module is provided with a liquid crystal display unit, when a vehicle enters a parking space, the camera module shoots a license plate number and feeds the license plate number back to the central control system, the central control system transmits the license plate number information to the display module, and finally the liquid crystal display unit presents the license plate number.
Preferably, the central control system is provided with a voice module, the voice module is provided with an anti-collision alarm unit, the voice module is provided with an in-and-out vehicle prompting unit, and the anti-collision alarm unit and the in-and-out vehicle prompting unit are provided with voice players.
Preferably, the voice module is connected with a central control system, the central control system is connected with the camera module, when a vehicle enters and exits, the camera module transmits vehicle information to the central control system, and then the vehicle information is transmitted to the voice module by the central control system so that the voice player can make a sound.
Preferably, the voice module is connected with an anti-collision alarm unit, the anti-collision alarm unit transmits information to the voice player when the vehicle is close to the barrier gate, and the voice player gives an alarm.
Preferably, when the barrier gate control module receives the information of the parking space entering control module or the parking space exiting control module, the information is transmitted to the gate opening control module or the gate closing control module, and the barrier gate is controlled by the gate opening control module or the gate closing control module.
Preferably, the collision avoidance warning unit (18) calculates an average gradation value of an nth row in the vehicle image obtained by the camera module (14) by the following formula:
wherein C (n) represents the gray value of the nth row of the vehicle image, l (n)1Pixel coordinates of the right end of the nth row of the vehicle image, l (n)2The left-end pixel coordinates of the nth row of the vehicle image are represented, and c (n, p) represents the average pixel grayscale value in the vehicle image. If the value of C (n) is larger than the preset threshold value, the voice player (20) gives an alarm.
Preferably, the infrared detector comprises a first detector, a second detector and a calculator, the calculator comprises a brightness calculator and a transmittance calculator, the first detector is used for detecting infrared spectrum irradiance of a first wavelength, the second detector is used for detecting infrared spectrum irradiance of a second wavelength, the second wavelength is larger than the first wavelength, the brightness calculator is used for calculating brightness of the vehicle, and the transmittance calculator is used for calculating transmittance of the vehicle. The infrared detector temperature can be calculated with high accuracy even in the far infrared and mid-infrared regions.
Preferably, the collision avoidance warning unit (18) performs the steps of: detecting the distance between the vehicle and the barrier (8); judging whether the distance between the vehicle and the barrier (8) is smaller than a preset threshold value or not; if the distance between the vehicle and the barrier (8) is smaller than a preset threshold value, acquiring a longitudinal acceleration component and a transverse acceleration component of the vehicle, and calculating a first variance of the longitudinal acceleration component and a second variance of the transverse acceleration component; the collision avoidance warning unit (18) issues a warning if the first variance or the second variance exceeds a preset threshold.
Preferably, the collision avoidance warning unit (18) calculates the vehicle speed by the formula:
where S denotes vehicle speed lpixThe length of each pixel point in the vehicle image is represented, p represents the resolution of the vehicle image, (A, B) represents the barycenter position coordinate of the 1 st frame of vehicle image collected by the camera module (14), (A (m), B (m)) represents the barycenter position coordinate of the m th frame of vehicle image collected by the camera module (14), and T represents the time interval of the first frame of image and the m th frame of image. The collision avoidance warning unit (18) issues a warning if the S value exceeds a preset threshold.
The invention has the technical effects and advantages that:
1. by arranging the barrier gate control module, compared with the prior art, when a vehicle wants to enter a parking space, the infrared detector receives information and transmits the information to the parking space entering reaction device, the parking space entering reaction device transmits the information to the parking space entering detection module, the parking space entering detection module transmits the information to the parking space entering control module, the parking space entering control module transmits the information to the barrier gate control module, the barrier gate control module controls the gate opening control module, and the gate opening control module enables a barrier gate to be automatically opened so that the vehicle can enter;
2. through setting up, compare with prior art, when the vehicle business turn over, the camera module shoots, with information transmission to center control system, center control system with information transmission to display module, display module with information transmission to liquid crystal display unit, center control system with information transmission to voice module, voice module with information transmission to the suggestion unit of business turn over, be about to vehicle information through voice player report.
Drawings
Fig. 1 is a schematic view of the overall module structure of the present invention.
Fig. 2 is a schematic structural diagram of a barrier gate module according to the present invention.
Fig. 3 is a schematic structural diagram of a parking space control module according to the present invention.
Fig. 4 is a schematic structural diagram of an audio/video module according to the present invention.
Fig. 5 is a schematic structural diagram of the parking lot exit control module according to the present invention.
FIG. 6 is a schematic diagram of a voice module according to the present invention.
FIG. 7 is a schematic view of an infrared detector of the present invention.
The reference signs are: 1. a central control system; 2. a power supply unit; 3. a parking space entering control module; 4. a parking space control module; 5. a parking space entering detection module; 6. a parking space detection module; 7. a barrier gate control module; 8. a barrier gate; 9. an infrared detector; 10. a parking space entering reaction device; 11. getting out of the parking space reaction device; 12. a switching-off control module; 13. a switch-off control module; 14. a camera module; 15. a display module; 16. a liquid crystal display unit; 17. a voice module; 18. an anti-collision warning unit; 19. a vehicle entering and exiting prompting unit; 20. and a voice player.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An automatic switch barrier system for public parking spaces as shown in fig. 1-6, wherein a power supply unit 2 is arranged on a central control system 1, an entry parking space control module 3 is arranged on the central control system 1, an exit parking space control module 4 is arranged on the central control system 1, an entry parking space detection module 5 is arranged on the entry parking space control module 3, an exit parking space detection module 6 is arranged on the exit parking space control module 4, a barrier gate control module 7 is arranged on the entry parking space control module 3, a barrier gate 8 is arranged on the barrier gate control module 7, an infrared detector 9 is arranged on the entry parking space detection module 5, an entry parking space reaction device 10 is arranged on the entry parking space detection module 5, an infrared detector 9 is arranged on the exit parking space detection module 6, an exit parking space reaction device 11 is arranged on the exit parking space detection module 6, and an opening control module 12 is arranged on the barrier gate control module 7, the barrier gate control module 7 is provided with a gate closing control module 13, and the gate opening control module 12 and the gate closing control module 13 are connected with the barrier gate 8.
The implementation mode is specifically as follows: when a vehicle wants to enter a parking space, the infrared detector 9 receives information and transmits the information to the entering parking space reaction device 10, the entering parking space reaction device 10 transmits the information to the entering parking space detection module 5, the entering parking space detection module 5 transmits the information to the entering parking space control module 3, the entering parking space control module 3 transmits the information to the barrier gate control module 7, the barrier gate control module 7 controls the opening control module 12, the opening control module 12 enables the barrier gate 8 to be automatically opened so that the vehicle can enter, when the vehicle wants to leave, the infrared detector 9 transmits the information to the leaving parking space reaction device 11, the leaving parking space reaction device 11 transmits the information to the leaving parking space detection module 6, the leaving parking space detection module 6 transmits the information to the leaving parking space control module 4, the leaving parking space control module 4 transmits the information to the barrier gate control module 7, the barrier gate control module 7 controls the opening control module 12, make banister 8 open, the vehicle is come in and go out successfully, and this embodiment has specifically solved among the prior art manual control banister 8 and has brought very big work load, makes banister 8 application on public parking stall very uncommon, has reduced public parking stall's security, has improved public parking stall's the management degree of difficulty.
The automatic switch barrier gate system for the public parking space shown in the attached figure 1 further comprises a camera module 14 arranged on the central control system 1, a display module 15 is arranged on the central control system 1, a liquid crystal display unit 16 is arranged on the display module 15, when a vehicle enters the parking space, the camera module 14 shoots the license plate number and feeds back the license plate number to the central control system 1, the central control system 1 transmits the license plate number information to the display module 15, and finally the license plate number is displayed by the liquid crystal display unit 16.
The central control system 1 is provided with a voice module 17, the voice module 17 is provided with an anti-collision alarm unit 18, the voice module 17 is provided with an in-out vehicle prompting unit 19, and the anti-collision alarm unit 18 and the in-out vehicle prompting unit 19 are provided with voice players 20.
The voice module 17 is connected with the central control system 1, the central control system 1 is connected with the camera module 14, when a vehicle enters and exits, the camera module 14 transmits vehicle information to the central control system 1, and then the vehicle information is transmitted to the voice module 17 through the central control system 1 so that the voice player 20 can make a voice.
The voice module 17 is connected with an anti-collision alarm unit 18, and when the vehicle is close to the barrier gate 8, the anti-collision alarm unit 18 transmits information to a voice player 20, and the voice player 20 gives an alarm.
And when receiving the information of the parking space entering control module 3 or the parking space exiting control module 4, the barrier gate control module 7 transmits the information to the brake opening control module 12 or the brake closing control module 13, and the barrier gate 8 is controlled by the brake opening control module 12 or the brake closing control module 13.
The implementation mode is specifically as follows: when a vehicle enters or exits, the camera module 14 shoots, information is transmitted to the central control system 1, the central control system 1 transmits the information to the display module 15, the display module 15 transmits the information to the liquid crystal display unit 16, the liquid crystal display unit 16 presents the vehicle information, the central control system 1 transmits the information to the voice module 17, the voice module 17 transmits the information to the vehicle entering or exiting prompting unit 19, namely the vehicle information is broadcasted through the voice player 20, when the camera module 14 monitors that the vehicle in the parking space is too close to the barrier gate 8, the information is transmitted to the central control system 1, the central control system 1 transmits the information to the voice module 17, the voice module 17 transmits the information to the anti-collision alarm unit 18, the alarm unit 18 enables the voice player 20 to give an alarm to prompt a driver to pay attention to driving safety, and the embodiment particularly solves the problem that the vehicle information is unclear in the prior art, the vehicle is easy to collide and scratch in the parking space.
The working principle of the invention is as follows:
referring to the attached drawings 1-6 of the specification, when a vehicle wants to enter a parking space, an infrared detector 9 receives information and transmits the information to an entering parking space reaction device 10, the entering parking space reaction device 10 transmits the information to an entering parking space detection module 5, the entering parking space detection module 5 transmits the information to an entering parking space control module 3, the entering parking space control module 3 transmits the information to a barrier gate control module 7, the barrier gate control module 7 controls a gate opening control module 12, the gate opening control module 12 enables a barrier gate 8 to be automatically opened so that the vehicle can enter, and when the vehicle wants to leave, the infrared detector 9 transmits the information to an exiting parking space reaction device 11;
referring to the attached drawings 1-6 of the specification, when a vehicle enters and exits, a camera module 14 shoots and transmits information to a central control system 1, the central control system 1 transmits the information to a display module 1, the display module 15 transmits the information to a liquid crystal display unit 16, the central control system 1 transmits the information to a voice module 17, the voice module 17 transmits the information to an entering and exiting vehicle prompting unit 19, namely, the vehicle information is broadcasted through a voice player 20, when the camera module 14 monitors that the vehicle in a parking space is too close to a barrier gate 8, the central control system 1 transmits the information to the voice module 17, the voice module 17 transmits the information to an anti-collision alarm unit 18, and the anti-collision alarm unit 18 enables the voice playing 20 to give an alarm.
In one embodiment of the invention, the anti-collision warning unit (18) calculates the average gray value of the nth row in the vehicle image obtained by the camera module (14) by the following formula:
wherein C (n) represents the gray value of the nth row of the vehicle image, l (n)1Pixel coordinates of the right end of the nth row of the vehicle image, l (n)2The left-end pixel coordinates of the nth row of the vehicle image are represented, and c (n, p) represents the average pixel grayscale value in the vehicle image. n can be any value and can also be selected according to the terrain and the specific situation of peripheral obstacles.
If the value of C (n) is larger than the preset threshold value, the voice player (20) gives an alarm.
The beneficial effects of the algorithm are as follows: the distance of the vehicle is simply and conveniently judged by calculating the average gray value of the nth row in the vehicle image, so that one-dimensional anti-collision control is added, and the safety of the system is improved.
In one embodiment of the present invention, referring to fig. 7, an infrared detector includes a first detector for detecting infrared spectral irradiance at a first wavelength, a second detector for detecting infrared spectral irradiance at a second wavelength, the second wavelength being greater than the first wavelength, and a calculator for calculating the brightness of a vehicle, the transmittance calculator for calculating the transmittance of a vehicle.
The beneficial effects of the embodiment are as follows: the infrared detector can calculate the temperature of the infrared detector with high precision even in the far infrared region and the middle infrared region.
In one embodiment of the invention, the collision avoidance warning unit (18) performs the steps of: detecting the distance between the vehicle and the barrier (8); judging whether the distance between the vehicle and the barrier (8) is smaller than a preset threshold value or not; if the distance between the vehicle and the barrier (8) is smaller than a preset threshold value, acquiring a longitudinal acceleration component and a transverse acceleration component of the vehicle, and calculating a first variance of the longitudinal acceleration component and a second variance of the transverse acceleration component; the collision avoidance warning unit (18) issues a warning if the first variance or the second variance exceeds a preset threshold.
The beneficial effects of the embodiment are as follows: by calculating the distance between the vehicle and the barrier gate and further calculating the longitudinal acceleration component, the transverse acceleration component and the variance of the longitudinal acceleration component and the transverse acceleration component of the vehicle, the collision risk between the vehicle and the barrier gate is accurately controlled, the anti-collision alarm unit can accurately work, and the effect is obvious.
In one embodiment of the invention, the collision avoidance warning unit (18) calculates the vehicle speed by the following formula:
where S denotes vehicle speed lpixThe length of each pixel point in the vehicle image is represented, p represents the resolution of the vehicle image, (A, B) represents the barycenter position coordinate of the 1 st frame of vehicle image collected by the camera module (14), (A (m), B (m)) represents the barycenter position coordinate of the m th frame of vehicle image collected by the camera module (14), and T represents the time interval of the first frame of image and the m th frame of image. The collision avoidance warning unit (18) issues a warning if the S value exceeds a preset threshold.
The beneficial effect of this embodiment is: the vehicle speed is estimated through the image, and a simple speed calculation is realized, so that an anti-collision alarm function is efficiently realized.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides an automatic switch banister system in public parking stall, includes central control system (1), its characterized in that: the parking space monitoring system is characterized in that the central control system (1) is provided with a power supply unit (2), the central control system (1) is provided with a parking space inlet control module (3), the central control system (1) is provided with a parking space outlet control module (4), the parking space inlet control module (3) is provided with a parking space inlet detection module (5), the parking space outlet control module (4) is provided with a parking space outlet detection module (6), the parking space inlet control module (3) is provided with a barrier gate control module (7), the barrier gate control module (7) is provided with a barrier gate (8), the parking space inlet detection module (5) is provided with an infrared detector (9), the parking space inlet detection module (5) is provided with a parking space inlet reaction device (10), the parking space outlet detection module (6) is provided with an infrared detector (9), and the parking space outlet detection module (6) is provided with a, the barrier gate control module (7) is provided with an opening control module (12), the barrier gate control module (7) is provided with a closing control module (13), and the opening control module (12) is connected with the closing control module (13) and the barrier gate (8).
2. The public parking space automated switch barrier system of claim 1, wherein: the central control system (1) is provided with a camera module (14), the central control system (1) is provided with a display module (15), the display module (15) is provided with a liquid crystal display unit (16), when a vehicle enters a parking space, the camera module (14) shoots a license plate number and feeds the license plate number back to the central control system (1), the central control system (1) transmits the license plate number information to the display module (15), and finally the liquid crystal display unit (16) presents the license plate number.
3. The public parking space automated switch barrier system of claim 1, wherein: the central control system (1) is provided with a voice module (17), the voice module (17) is provided with an anti-collision alarm unit (18), the voice module (17) is provided with an in-out vehicle prompting unit (19), and the anti-collision alarm unit (18) and the in-out vehicle prompting unit (19) are provided with voice players (20).
4. The public parking space automated switch barrier system of claim 3, wherein: the voice module (17) is connected with the central control system (1), the central control system (1) is connected with the camera module (14), when a vehicle enters and exits, the camera module (14) transmits vehicle information to the central control system (1), and then the vehicle information is transmitted to the voice module (17) through the central control system (1) to enable the voice player (20) to make a voice.
5. The public parking space automated switch barrier system of claim 3, wherein: the voice module (17) is connected with an anti-collision alarm unit (18), the anti-collision alarm unit (18) transmits information to the voice player (20) when the vehicle is close to the barrier gate (8), and the voice player (20) gives an alarm.
6. The public parking space automated switch barrier system of claim 1, wherein: when the barrier gate control module (7) receives the information of the parking space entering control module (3) or the parking space exiting control module (4), the information is transmitted to the gate opening control module (12) or the gate closing control module (13), and the barrier gate (8) is controlled by the gate opening control module (12) or the gate closing control module (13).
7. A public parking space automation switch barrier system according to any one of claims 3-5, characterized in that the anti-collision warning unit (18) calculates the average grey value of the nth row in the vehicle image obtained by the camera module (14) by the following formula:
wherein C (n) represents the gray value of the nth row of the vehicle image, l (n)1Pixel coordinates of the right end of the nth row of the vehicle image, l (n)2The left-end pixel coordinates of the nth row of the vehicle image are represented, and c (n, p) represents the average pixel grayscale value in the vehicle image.
If the value of C (n) is larger than the preset threshold value, the voice player (20) gives an alarm.
8. Public parking space automation switch barrier system according to any one of claims 1-7, the infrared detector comprises a first detector for detecting infrared spectral irradiance at a first wavelength, a second detector for detecting infrared spectral irradiance at a second wavelength, the second wavelength being greater than the first wavelength, and a calculator for calculating the brightness of the vehicle, the transmittance calculator for calculating the transmittance of the vehicle. The infrared detector temperature can be calculated with high accuracy even in the far infrared and mid-infrared regions.
9. A public parking space automation switch barrier system according to any one of claims 3-5, the collision avoidance warning unit (18) performing the steps of: detecting the distance between the vehicle and the barrier (8); judging whether the distance between the vehicle and the barrier (8) is smaller than a preset threshold value or not; if the distance between the vehicle and the barrier (8) is smaller than a preset threshold value, acquiring a longitudinal acceleration component and a transverse acceleration component of the vehicle, and calculating a first variance of the longitudinal acceleration component and a second variance of the transverse acceleration component; the collision avoidance warning unit (18) issues a warning if the first variance or the second variance exceeds a preset threshold.
10. A public parking space automation switch barrier system according to any one of claims 3-5, characterized in that the collision avoidance warning unit (18) calculates vehicle speed by the following formula:
where S denotes vehicle speed lpixRepresenting each pixel in a vehicle imageP represents the resolution of the vehicle image, (a, B) represents the centroid position coordinates of the 1 st frame of vehicle image acquired by the camera module (14), (a (m), B (m)) represents the centroid position coordinates of the m th frame of vehicle image acquired by the camera module (14), and T represents the time interval between the first frame of image and the m th frame of image.
The collision avoidance warning unit (18) issues a warning if the S value exceeds a preset threshold.
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| CN202010684325.1A CN111798695A (en) | 2020-07-16 | 2020-07-16 | Public parking stall automation switch banister system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934467A (en) * | 2022-07-08 | 2022-08-23 | 江苏永达电力金具有限公司 | Parking space barrier gate control method, parking space barrier gate system and medium |
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| CN209534782U (en) * | 2019-01-25 | 2019-10-25 | 云南思辉电气设备有限公司 | A kind of charging pile with temperature and humidity monitor function |
| CN209993108U (en) * | 2019-03-27 | 2020-01-24 | 无锡市科博睿智能科技有限公司 | Novel barrier gate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114934467A (en) * | 2022-07-08 | 2022-08-23 | 江苏永达电力金具有限公司 | Parking space barrier gate control method, parking space barrier gate system and medium |
| CN114934467B (en) * | 2022-07-08 | 2024-04-30 | 江苏永达电力金具有限公司 | Parking space barrier control method, parking space barrier system and medium |
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