CN115762219A - Intelligent parking management system based on PLC - Google Patents
Intelligent parking management system based on PLC Download PDFInfo
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- CN115762219A CN115762219A CN202211255357.5A CN202211255357A CN115762219A CN 115762219 A CN115762219 A CN 115762219A CN 202211255357 A CN202211255357 A CN 202211255357A CN 115762219 A CN115762219 A CN 115762219A
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- 230000003139 buffering effect Effects 0.000 claims description 15
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- 238000007906 compression Methods 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
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Abstract
The invention provides an intelligent parking management system based on a PLC (programmable logic controller), which comprises a fixed vertical plate, wherein a buffer component for performing buffer protection with the fixed vertical plate is arranged on the front end surface of the fixed vertical plate, a distance sensor is also connected on the front end surface of the fixed vertical plate, a PLC (programmable logic controller) is connected on the side part of the fixed vertical plate, a movable plate matched with the fixed vertical plate is movably inserted in a slot, the top of the movable plate is connected with a prompting lamp, the left side wall and the right side wall of the movable plate are both connected with traction arms, one end of each traction arm, far away from the connected movable plate, is connected with an electric cylinder which is vertically arranged, the bottom end of the electric cylinder is connected with a fixed seat, and the bottom end of the fixed vertical plate is connected with a fixed plate. The parking management system is convenient for a vehicle owner to find an empty parking space quickly when the vehicle owner parks in the parking lot, can effectively avoid the phenomenon that a plurality of vehicles are blocked due to the fact that the parking spaces are difficult to find in the parking lot while the vehicle owner parks the vehicle conveniently, and is beneficial to improving the operation efficiency of the parking lot.
Description
Technical Field
The invention relates to the technical field of parking management, and particularly discloses an intelligent parking management system based on a PLC.
Background
The parking lot is a place for parking vehicles. Along with the development of economy and the improvement of industrial level, more and more people use the car trip, the traffic control department that is relevant is being puzzled to the parking problem one kind, and present parking area parking inefficiency, is difficult to know the concrete position of empty parking stall after the vehicle gets into the parking area, causes the car owner to need spend a large amount of time to go in order to look for the parking stall in the parking area, makes many cars detour easily and then causes the jam, seriously influences the operating efficiency in parking area, has caused the traffic jam in the inside parking area to a certain extent.
Disclosure of Invention
In view of above-mentioned defect or not enough among the prior art, this application aims at providing an intelligent parking management system based on PLC, including fixed riser, be equipped with on the preceding terminal surface of fixed riser and be used for carrying out the buffer member who cushions protection rather than, still be connected with distance sensor on the preceding terminal surface of fixed riser, the lateral part of fixed riser is connected with the PLC controller, the vertical slot of having seted up in top of fixed riser, the slot internalization is inserted and is equipped with the fly leaf rather than the looks adaptation, the top of fly leaf is connected with the warning light, all be connected with the draft arm on the lateral wall about the fly leaf, the draft arm is kept away from one of being connected the fly leaf and is served and be connected with the electronic jar that is vertical arranging, the bottom of electronic jar is connected with the fixing base, the bottom of fixed riser is connected with the fixed plate.
Preferably, the bottom end of the movable plate is movably inserted into the slot at the top end of the fixed vertical plate, and the top end of the movable plate extends out of the slot.
Preferably, the fixing seat connected with the bottom end of the electric cylinder is connected with the side wall of the fixed vertical plate.
Preferably, the buffer member comprises an anti-collision plate arranged on the front side of the fixed vertical plate, one side of the anti-collision plate close to the fixed vertical plate is provided with an opening matched with the anti-collision plate at a position corresponding to the distance sensor, four corners of one side of the anti-collision plate close to the fixed vertical plate are respectively provided with a first-stage energy absorbing part, and two second-stage energy absorbing parts are symmetrically arranged on one side of the anti-collision plate close to the fixed vertical plate.
Preferably, one-level energy-absorbing spare includes the cavity barrel, the inside seal sliding connection of cavity barrel has the slide plate, be connected with the elastic rubber post on the diapire of cavity barrel inner chamber, and the elastic rubber post is kept away from the one end of cavity barrel inner chamber diapire and is connected with the slide plate, evenly be connected with a plurality of reset spring A on one side that the slide plate is close to the elastic rubber post, reset spring A keeps away from the one end of slide plate and is connected with the diapire of cavity barrel inner chamber, and the periphery of elastic rubber post is located to a plurality of reset spring A rings, be connected with the depression bar on one side that the elastic rubber post was kept away from to the slide plate, and the one end that the slide plate was kept away from to the depression bar runs through the cavity barrel, four depression bar difference fixed connection are in the four corners department of anticollision board, the one end that the depression bar was kept away from to the cavity barrel is connected with the front side of fixed riser.
Preferably, the second-stage energy absorbing part comprises a hollow bottom box fixedly connected to the front side of the fixed vertical plate, a driving inclined-plane slider is arranged inside the hollow bottom box, the section of the driving inclined-plane slider is isosceles trapezoid, two inclined planes of the driving inclined-plane slider are respectively provided with a driven inclined-plane slider with a triangular section, the inclined planes of the driven inclined-plane slider are attached to the inclined plane of the driving inclined-plane slider, horizontal guide plates are respectively connected to the back faces of the two driven inclined-plane sliders, two reset springs B are symmetrically connected to the back faces of the two driven inclined-plane sliders, one ends, far away from the connected driven inclined-plane slider, of the horizontal guide plates penetrate through the hollow bottom box, one ends, far away from the connected driven inclined-plane slider, of the reset springs B are connected to the side wall of the inner cavity of the hollow bottom box, the front end of the driving inclined-plane slider is connected to a cylinder, the periphery of the cylinder is sleeved with an extension spring, one end of the extension spring is connected to the driving inclined-plane slider, the other end of the cylinder is fixedly connected to the inner wall of the hollow bottom box, and one end, far away from the connected to the driving inclined-plane slider, penetrates through the hollow bottom box and is connected to the anti-collision plate.
Preferably, the distance sensor is electrically connected with the input end of the PLC controller, and the prompting lamp is electrically connected with the output end of the PLC controller.
Has the beneficial effects that:
1. the parking management system is convenient for a vehicle owner to quickly find an empty parking space when the vehicle owner parks in the parking lot, can effectively avoid the phenomenon that a plurality of vehicles are blocked due to the fact that the parking spaces are difficult to find in the parking lot while the vehicle owner parks the vehicle, and is beneficial to improving the operation efficiency of the parking lot.
2. When the automobile enters a parking space in a backing mode and collides with the device, the device can be protected in a buffering mode through the buffering component on the front side of the fixed vertical plate, the automobile can be effectively prevented from being damaged by collision when being poured into the parking space of the parking lot, and therefore the service life of the device is prolonged.
3. When a vehicle collides with the anti-collision plate in the process of backing, the impact force generated in the collision process is simultaneously transmitted to the first-stage energy-absorbing part and the second-stage energy-absorbing part by the anti-collision plate, and the impact force generated in the collision process is subjected to energy-absorbing buffering treatment through the first-stage energy-absorbing part and the second-stage energy-absorbing part together, so that the buffering effect is good, and the damage degree to the device in the collision is effectively reduced.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic perspective view of the fixing vertical plate of the present invention;
FIG. 3 is a cross-sectional view of a secondary energy absorber member of the present invention;
FIG. 4 is a side view of the active ramp slider of the present invention;
FIG. 5 is a cross-sectional view of a primary energy absorber of the present invention.
In the figure:
1. fixing the vertical plate; 2. a movable plate; 3. a trailing arm; 4. an electric cylinder; 5. a PLC controller; 6. a distance sensor; 7. an anti-collision plate; 800. a pressure lever; 801. a hollow cylinder; 802. a slide plate; 803. an elastic rubber column; 804. a return spring A; 900. a hollow bottom case; 901. a cylinder; 902. a horizontal guide plate; 903. an active bevel slider; 904. a return spring B; 905. a driven inclined plane slider; 10. and a warning lamp.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
The drawings in the embodiments of the invention: the different types of hatching in the figures are not given the national standards, do not require the material of the elements, and distinguish between cross-sectional views of the elements in the figures.
Please refer to fig. 1, an intelligent parking management system based on PLC, including fixed riser 1, be equipped with on the preceding terminal surface of fixed riser 1 and be used for rather than carrying out the buffering component of buffer protection, still be connected with distance sensor 6 on the preceding terminal surface of fixed riser 1, the lateral part of fixed riser 1 is connected with PLC controller 5, the vertical slot of having seted up in top of fixed riser 1, the activity is inserted and is equipped with fly leaf 2 rather than the looks adaptation in the slot, the top of fly leaf 2 is connected with warning light 10, all be connected with on the lateral wall about fly leaf 2 draw arm 3, draw arm 3 keeps away from one of connected fly leaf 2 and serves and be connected with the electronic jar 4 that is vertical arrangement, the bottom of electronic jar 4 is connected with the fixing base, the bottom connection of fixed riser 1 has the fixed plate. Wherein, the bottom end of the movable plate 2 is movably inserted into the slot at the top end of the fixed vertical plate 1, and the top end of the movable plate 2 extends out from the slot. Wherein, the fixing base that 4 bottoms of electronic jar are connected is connected with the lateral wall of fixed riser 1. Wherein, distance sensor 6 electric connection PLC controller 5's input, warning light 10 electric connection PLC controller 5's output. The parking management system is convenient for a vehicle owner to find an empty parking space quickly when the vehicle owner parks in the parking lot, can effectively avoid the phenomenon that a plurality of vehicles are blocked due to the fact that the parking spaces are difficult to find in the parking lot while the vehicle owner parks the vehicle conveniently, and is beneficial to improving the operation efficiency of the parking lot.
Referring to fig. 1 and fig. 2, the buffering member includes an anti-collision plate 7 disposed at the front side of the fixed vertical plate 1, an opening matched with the fixed vertical plate 1 is disposed at a position corresponding to the distance sensor 6 on one side of the anti-collision plate 7 close to the fixed vertical plate 1, first-stage energy absorbing members are disposed at four corners of one side of the anti-collision plate 7 close to the fixed vertical plate 1, and two second-stage energy absorbing members are symmetrically disposed on one side of the anti-collision plate 7 close to the fixed vertical plate 1.
Referring to fig. 5, the primary energy absorbing member includes a hollow cylinder 801, a sliding plate 802 is hermetically and slidably connected inside the hollow cylinder 801, an elastic rubber column 803 is connected to a bottom wall of an inner cavity of the hollow cylinder 801, one end of the elastic rubber column 803, which is far away from the bottom wall of the inner cavity of the hollow cylinder 801, is connected to the sliding plate 802, a plurality of return springs a804 are uniformly connected to one side of the sliding plate 802, which is close to the elastic rubber column 803, one end of the return springs a804, which is far away from the sliding plate 802, is connected to the bottom wall of the inner cavity of the hollow cylinder 801, the plurality of return springs a804 are annularly arranged on the periphery of the elastic rubber column 803, a pressure bar 800 is connected to one side of the sliding plate 802, which is far away from the elastic rubber column 803, one end of the pressure bar 800, which is far away from the sliding plate 802, penetrates through the hollow cylinder 801, four pressure bars 800 are respectively and fixedly connected to four corners of the anticollision plate 7, and one end of the hollow cylinder 801, which is far away from the pressure bar 800, is connected to a front side of the fixed vertical plate 1.
Referring to fig. 3 and fig. 4, the secondary energy absorbing element includes a hollow bottom case 900 fixedly connected to the front side of the fixed vertical plate 1, a driving inclined slider 903 is disposed inside the hollow bottom case 900, the section of the driving inclined slider 903 is isosceles trapezoid, two inclined planes of the driving inclined slider 903 are respectively provided with a driven inclined slider 905 having a triangular section, the inclined planes of the driven inclined slider 905 are attached to the inclined planes of the driving inclined slider 903, the opposite sides of the two driven inclined sliders 905 are respectively connected with a horizontal guide plate 902, the opposite sides of the two driven inclined sliders 905 are respectively and symmetrically connected with two return springs B904, one end of the horizontal guide plate 902, which is far away from the connected driven inclined slider 905, penetrates through the hollow bottom case 900, one end of the return spring B, which is far away from the connected driven inclined slider 905, is connected to the side wall of the inner cavity of the hollow bottom case 900, the front end of the driving inclined slider 903 is connected with a cylinder 901, the outer periphery of the cylinder 901 is sleeved with an extension spring 906, one end of the extension spring 906 is connected with the driving inclined slider 903, the other end of the cylinder 901, which is far away from the connected with the hollow bottom case 900, and connected with the driving inclined slider 903. When a vehicle collides with the anti-collision plate 7 in the process of backing, the anti-collision plate 7 simultaneously transmits impact force generated in the collision process to the primary energy-absorbing part and the secondary energy-absorbing part, and the impact force generated in the collision process is subjected to energy-absorbing buffering treatment through the primary energy-absorbing part and the secondary energy-absorbing part together, so that the buffering effect is good, and the damage degree of the device in the collision process is effectively reduced. The impact force is respectively transmitted to the compression bar 800 and the column 901 by the anti-collision plate 7, the elastic rubber column 803 and the return spring A804 perform energy absorption buffering treatment on the impact force transmitted by the compression bar 800, when the impact force is transmitted to the column 901, the column 901 drives the driving inclined plane slider 903 to move, when the driving inclined plane slider 903 moves, two inclined planes on the driving inclined plane slider 903 extrude two driven inclined plane sliders 905, so that the two driven inclined plane sliders 905 move back and forth, and in the process of driving the driving inclined plane slider 903 to move by the column 901 under the action of the impact force, the impact force is subjected to energy absorption buffering treatment through the extension spring 906 and the two return springs B904.
Referring to fig. 1 to 5, the present invention provides a parking management system for a vehicle owner to quickly find an empty parking space when the vehicle owner parks in a parking lot, so that the vehicle owner can conveniently park the vehicle, and can effectively avoid the phenomenon of jam of a plurality of vehicles due to difficulty in finding the parking space in the parking lot, which is beneficial to improving the operating efficiency of the parking lot.
When the car gets into the parking stall and bumps with this device backing a car, can cushion protection this device through the buffer member of fixed riser 1 front side, can effectively avoid the car to cause the collision to damage this device when pouring into the parking stall in parking area to be favorable to prolonging the life of this device.
When a vehicle collides with the anti-collision plate 7 in the process of backing, the anti-collision plate 7 simultaneously transmits impact force generated in the collision process to the primary energy-absorbing part and the secondary energy-absorbing part, and the impact force generated in the collision process is subjected to energy-absorbing buffering treatment through the primary energy-absorbing part and the secondary energy-absorbing part together, so that the buffering effect is good, and the damage degree of the device in the collision process is effectively reduced. The impact force is respectively transmitted to the compression bar 800 and the column 901 by the anti-collision plate 7, the elastic rubber column 803 and the return spring A804 perform energy absorption buffering treatment on the impact force transmitted by the compression bar 800, when the impact force is transmitted to the column 901, the column 901 drives the driving inclined plane slider 903 to move, when the driving inclined plane slider 903 moves, two inclined planes on the driving inclined plane slider 903 extrude two driven inclined plane sliders 905, so that the two driven inclined plane sliders 905 move back and forth, and in the process of driving the driving inclined plane slider 903 to move by the column 901 under the action of the impact force, the impact force is subjected to energy absorption buffering treatment through the extension spring 906 and the two return springs B904.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (7)
1. The utility model provides an intelligence parking management system based on PLC, includes fixed riser (1), its characterized in that: be equipped with on the preceding terminal surface of fixed riser (1) and be used for rather than carrying out the buffering component of buffer protection, still be connected with distance sensor (6) on the preceding terminal surface of fixed riser (1), the lateral part of fixed riser (1) is connected with PLC controller (5), the vertical slot of having seted up in top of fixed riser (1), activity is inserted in the slot and is equipped with fly leaf (2) rather than the looks adaptation, the top of fly leaf (2) is connected with warning light (10), all be connected with on the lateral wall about fly leaf (2) draft arm (3), draft arm (3) are kept away from one of being connected fly leaf (2) and are served and be connected with electronic jar (4) that are vertical arrangement, the bottom of electronic jar (4) is connected with the fixing base, the bottom of fixed riser (1) is connected with the fixed plate.
2. The intelligent parking management system based on PLC according to claim 1, wherein: the bottom end of the movable plate (2) is movably inserted into a slot at the top end of the fixed vertical plate (1), and the top end of the movable plate (2) extends out of the slot.
3. The intelligent parking management system based on PLC of claim 1, characterized in that: the fixing seat connected with the bottom end of the electric cylinder (4) is connected with the side wall of the fixed vertical plate (1).
4. The intelligent parking management system based on PLC according to claim 1, wherein: buffer member is including setting up in crashproof board (7) of fixed riser (1) front side, one side that crashproof board (7) are close to fixed riser (1) is seted up rather than assorted opening with distance sensor (6) position correspondence department, the four corners department that crashproof board (7) are close to one side of fixed riser (1) all is equipped with one-level energy-absorbing piece, crashproof board (7) are close to still the symmetry on one side of fixed riser (1) and are equipped with two second grade energy-absorbing pieces.
5. The PLC-based intelligent parking management system of claim 4, wherein: the first-stage energy absorption piece comprises a hollow cylinder body (801), a sliding plate (802) is connected to the inside of the hollow cylinder body (801) in a sealing and sliding mode, elastic rubber columns (803) are connected to the bottom wall of the inner cavity of the hollow cylinder body (801), one end, far away from the bottom wall of the inner cavity of the hollow cylinder body (801), of each elastic rubber column (803) is connected with the sliding plate (802), a plurality of reset springs A (804) are evenly connected to one side, close to the elastic rubber columns (803), of each sliding plate (802), one end, far away from the sliding plate (802), of each reset spring A (804) is connected with the bottom wall of the inner cavity of the hollow cylinder body (801), the plurality of reset springs A (804) are annularly arranged on the periphery of the elastic rubber columns (803), one side, far away from the elastic rubber columns (803), of each sliding plate (802) is connected with a compression rod (800), one end, far away from the sliding plate (802), of each compression rod (800) penetrates through the hollow cylinder body (801), the four compression rods (800) are respectively and fixedly connected to four corners of the collision-proof plate (7), and one end, far away from the vertical plate (800) of the hollow cylinder body (801) is connected with the front side of the fixed plate (1).
6. The PLC-based intelligent parking management system of claim 4, wherein: the secondary energy absorption part comprises a hollow bottom box (900) fixedly connected to the front side of the fixed vertical plate (1), an active inclined plane sliding block (903) is arranged in the hollow bottom box (900), the section of the active inclined plane sliding block (903) is in an isosceles trapezoid shape, two inclined planes of the driving inclined plane sliding block (903) are both provided with a driven inclined plane sliding block (905) with a triangular section, the inclined plane of the driven inclined plane sliding blocks (905) is attached to the inclined plane of the driving inclined plane sliding block (903), the back surfaces of the two driven inclined plane sliding blocks (905) are connected with a horizontal guide plate (902), the back surfaces of the two driven inclined plane sliding blocks (905) are symmetrically connected with two return springs B (904), one end of the horizontal guide plate (902) far away from the connected driven inclined plane slide block (905) penetrates through the hollow bottom box (900), one end of the return spring B (904) far away from the connected driven inclined plane slide block (905) is connected with the side wall of the inner cavity of the hollow bottom box (900), the front end of the active inclined plane sliding block (903) is connected with a column body (901), an extension spring (906) is sleeved on the periphery of the cylinder (901), one end of the extension spring (906) is connected with the active inclined plane sliding block (903), the other end of the extension spring is fixedly connected to the inner wall of the hollow bottom box (900), and one end, far away from the connected active inclined plane sliding block (903), of the cylinder (901) penetrates through the hollow bottom box (900) and is connected with the anti-collision plate (7).
7. The intelligent parking management system based on PLC according to claim 1, wherein: the distance sensor (6) is electrically connected with the input end of the PLC controller (5), and the prompting lamp (10) is electrically connected with the output end of the PLC controller (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211255357.5A CN115762219A (en) | 2022-10-13 | 2022-10-13 | Intelligent parking management system based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211255357.5A CN115762219A (en) | 2022-10-13 | 2022-10-13 | Intelligent parking management system based on PLC |
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| Publication Number | Publication Date |
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| CN115762219A true CN115762219A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211255357.5A Pending CN115762219A (en) | 2022-10-13 | 2022-10-13 | Intelligent parking management system based on PLC |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200356560Y1 (en) * | 2004-04-19 | 2004-07-15 | 박홍균 | A post for preventing the non-parking |
| CN107761562A (en) * | 2017-11-09 | 2018-03-06 | 孙艳 | A kind of reinforced type bridge anticollision barrier |
| CN211851127U (en) * | 2019-10-23 | 2020-11-03 | 杭州云之合科技有限公司 | Parking stake with recognition function |
| CN213183110U (en) * | 2020-10-20 | 2021-05-11 | 万车互泊(厦门)科技有限公司 | Wisdom city is with effectual parking guider safely |
| CN213203915U (en) * | 2021-03-25 | 2021-05-14 | 甘肃中联威视电子科技有限公司 | Automatic identification guardrail for parking lot |
| CN213980145U (en) * | 2020-10-10 | 2021-08-17 | 北京兴业源物业管理股份有限公司 | Parking guide device convenient to move |
| CN214028272U (en) * | 2020-12-31 | 2021-08-24 | 柳州云森新能源科技有限公司 | Intelligent electric automobile charging management device |
| CN215552618U (en) * | 2021-06-01 | 2022-01-18 | 上海利为信息科技有限公司 | New forms of energy electric automobile fills electric pile protection device |
-
2022
- 2022-10-13 CN CN202211255357.5A patent/CN115762219A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200356560Y1 (en) * | 2004-04-19 | 2004-07-15 | 박홍균 | A post for preventing the non-parking |
| CN107761562A (en) * | 2017-11-09 | 2018-03-06 | 孙艳 | A kind of reinforced type bridge anticollision barrier |
| CN211851127U (en) * | 2019-10-23 | 2020-11-03 | 杭州云之合科技有限公司 | Parking stake with recognition function |
| CN213980145U (en) * | 2020-10-10 | 2021-08-17 | 北京兴业源物业管理股份有限公司 | Parking guide device convenient to move |
| CN213183110U (en) * | 2020-10-20 | 2021-05-11 | 万车互泊(厦门)科技有限公司 | Wisdom city is with effectual parking guider safely |
| CN214028272U (en) * | 2020-12-31 | 2021-08-24 | 柳州云森新能源科技有限公司 | Intelligent electric automobile charging management device |
| CN213203915U (en) * | 2021-03-25 | 2021-05-14 | 甘肃中联威视电子科技有限公司 | Automatic identification guardrail for parking lot |
| CN215552618U (en) * | 2021-06-01 | 2022-01-18 | 上海利为信息科技有限公司 | New forms of energy electric automobile fills electric pile protection device |
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