Energy-saving and environment-friendly access control system
By using millimeter-wave radar and geomagnetic sensors to predict vehicle trajectories in access control devices, and utilizing piezoelectric power generation layers to store vehicle kinetic energy, combined with a time-sharing power supply strategy, the response delay and high power consumption issues of access control devices are solved, achieving a low-energy, fast-response, and environmentally friendly access control system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KEDONG ENVIRONMENTAL PROTECTION TECH HEBEI CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-06-09
AI Technical Summary
Existing access control devices suffer from response delays and mechanical wear, and the identity recognition module continuously consumes power, resulting in high overall system standby power consumption.
The system uses millimeter-wave radar and geomagnetic sensors to predict vehicle trajectories, and combines piezoelectric power generation layers to convert vehicle kinetic energy into electrical energy. The power supply to the motor and identification module is controlled by a time-sharing power supply circuit board, achieving instantaneous response and reducing unnecessary power consumption.
It eliminates mechanical trigger delay, significantly reduces standby power consumption, extends equipment life, reduces reliance on external power supply, and improves system response speed and environmental friendliness.
Smart Images

Figure CN224341907U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of access control technology, and specifically discloses an energy-saving and environmentally friendly access control system. Background Technology
[0002] Access control devices are intelligent management systems for personnel entering and exiting parking lots. With the advancement and development of technology, intelligent parking management systems are becoming increasingly common in residential communities, buildings, and government agencies. People's demands for parking management systems are also increasing, requiring a higher level of intelligence. Vehicle access control systems are an important component of parking management systems, primarily used to manage vehicle entry and exit, vehicle parking fees, vehicle and personnel identification, vehicle data management, and location tracking.
[0003] Chinese Patent (Announcement No.: CN212103778U, disclosing an energy-saving and environmentally friendly access control system) discloses an access control main body, an access control integrated machine, and a ground sensor module. The access control integrated machine is signal-connected to the access control main body. There are two sets of ground sensor modules, which are located on both sides of the access control main body. The access control main body is equipped with a motor and a power supply, which are electrically connected. The access control integrated machine is equipped with a central controller. The ground sensor module includes a steel plate, a gravity sensor, a spring, and a circuit switch. When a vehicle needs to pass, the central controller is in a low-power mode, which reduces energy consumption. At the same time, the circuit between the motor and the power supply is disconnected, avoiding the waste of electricity caused by the motor being energized for a long time.
[0004] However, although the above-mentioned device reduces the standby power consumption of the motor, it still has significant drawbacks:
[0005] 1. Response delay and mechanical wear issues: The vehicle needs to completely run over the steel plate to trigger the circuit switch, which leads to a delay in the gate response. In addition, the spring and steel plate are prone to fatigue and deformation due to long-term load, and the failure rate increases significantly with the use time.
[0006] 2. Only the motor is powered off, but the identity recognition module (such as the camera and card reader) continues to consume power, resulting in high overall system standby power consumption. Utility Model Content
[0007] This utility model proposes an energy-saving and environmentally friendly access control system that eliminates the mechanical triggering delay of traditional access control systems, achieves instantaneous response through electronic prediction, utilizes natural power generation from vehicle traffic to reduce reliance on external power supply, and avoids unnecessary power consumption through an independently controlled identity recognition module, significantly extending the lifespan of the equipment and reducing the power consumption of the access control system, making it more environmentally friendly.
[0008] This utility model is implemented as follows: an energy-saving and environmentally friendly access control system, comprising:
[0009] The access control unit contains a motor, a power supply, and a storage battery.
[0010] An access control unit is provided, with an identity recognition module and a prediction sensor group installed on its outer wall. The prediction sensor group includes a millimeter-wave radar and a geomagnetic sensor, which are embedded in the road base layer in front of the access control unit.
[0011] The time-sharing power supply circuit board is fixedly installed inside the access control body, with its input end connected to the power supply and its output end divided into two paths that are electrically connected to the motor and the identity recognition module respectively.
[0012] A piezoelectric power generation layer is laid under the road surface in front of the access control unit and connected to an energy storage battery via wires.
[0013] As a preferred energy-saving and environmentally friendly access control system of this utility model, the millimeter-wave radar and the geomagnetic sensor are respectively installed five meters and 0.8 meters below the ground at a distance of 1 meter from the main body of the access control system.
[0014] As a preferred energy-saving and environmentally friendly access control system according to this utility model, the time-sharing power supply circuit board includes a constant power supply area and a trigger power supply area. The constant power supply area is electrically connected to the prediction sensor group, and the trigger power supply area is electrically connected to the connecting motor and the identity recognition module through a relay.
[0015] As a preferred energy-saving and environmentally friendly access control system according to this utility model, the piezoelectric power generation layer includes multiple arrayed piezoelectric ceramic units, and the outer walls of the multiple piezoelectric ceramic units are covered with ceramic substrates.
[0016] As a preferred energy-saving and environmentally friendly access control system according to this utility model, the identity recognition module includes a binocular camera and an RFID antenna, and the power supply lines of the binocular camera and the RFID antenna are independently connected to a time-sharing power supply circuit board.
[0017] As a preferred energy-saving and environmentally friendly access control system of this utility model, rubber shock-absorbing pads are provided between the millimeter-wave radar, the geomagnetic sensor, and the ground.
[0018] The beneficial effects of this utility model are:
[0019] This device eliminates the mechanical triggering delay of traditional access control systems, achieves instantaneous response through electronic prediction, adopts a hierarchical power supply strategy to reduce standby power consumption to a negligible level, utilizes natural power generation from vehicle traffic to reduce reliance on external power supply, and an independently controlled identity recognition module avoids unnecessary power consumption, significantly extending the lifespan of the equipment and making the access control system more environmentally friendly by reducing power consumption. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0021] Fig. 1 This is a top view of the overall structure of this utility model;
[0022] Fig. 2 This is a diagram of the internal structure of the access control body 1 of this utility model.
[0023] The markings in the diagram are: 1. Access control unit; 2. Access control machine; 3. Motor; 4. Power supply; 5. Identification module; 6. Millimeter-wave radar; 7. Geomagnetic sensor; 8. Time-sharing power supply circuit board; 9. Piezoelectric power generation layer; 10. Binocular camera; 11. RFID antenna; 12. Energy storage battery. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.
[0025] Please see Figs. 1-2 An energy-saving and environmentally friendly access control system includes:
[0026] The access control unit 1 contains a motor 3, a power supply 4, and a storage battery 12.
[0027] Access control unit 2, with an identity recognition module 5 installed on the outer wall of access control unit 2, and a prediction sensor group, which includes millimeter-wave radar 6 and geomagnetic sensor 7, and the millimeter-wave radar 6 and geomagnetic sensor 7 are embedded in the road base layer in front of the access control body 1.
[0028] The time-sharing power supply circuit board 8 is fixedly installed inside the access control body 1, with its input end connected to the power supply 4 and its output end divided into two paths that are electrically connected to the motor 3 and the identity recognition module 5 respectively.
[0029] The piezoelectric power generation layer 9 is laid under the road surface in front of the access control body 1 and is connected to the energy storage battery 12 through wires.
[0030] In this embodiment: the millimeter-wave radar 6 is deployed five meters below the road surface in front of the access control unit 1 to predict vehicle trajectories and solve the response delay problem. The geomagnetic sensor 7 is located at 0.8 meters and works with the millimeter-wave radar 6 to verify the vehicle position and avoid false triggering. The time-sharing power supply circuit board 8 controls the motor 3 and the identity recognition module 5 through a relay, and normally only supplies a small amount of power to the millimeter-wave radar 6 and the geomagnetic sensor 7 to reduce standby power consumption. The piezoelectric power generation layer 9 converts the kinetic energy of the vehicle's crushing force into electrical energy and stores it in the energy storage battery 12 to continuously power the prediction sensor group and achieve energy self-circulation. The binocular camera 10 and the RFID antenna 11 are independently powered for identification. Power is immediately cut off upon completion to reduce unnecessary power consumption. Specifically, when the vehicle enters a five-meter range, the millimeter-wave radar 6 detects its speed and direction, and the signal is transmitted to the time-sharing power supply circuit board 8. When the vehicle reaches 0.8 meters, the geomagnetic sensor 7 confirms the position and triggers the relay to close. The trigger power supply area of the time-sharing power supply circuit board 8 supplies power to the motor 3 and the identity recognition module 5. The binocular camera 10 captures the driver's face, and the RFID antenna 11 reads the vehicle tag. After verification, the motor 3 drives the brake lever to lift, and the vehicle runs over the piezoelectric power generation layer 9. The piezoelectric ceramic unit generates electricity and stores it in the energy storage battery 12. After the vehicle has completely driven away, the relay disconnects, and the high-power-consuming equipment is powered off.
[0031] As a technical optimization of this utility model, the millimeter-wave radar 6 and the geomagnetic sensor 7 are respectively installed 5 meters and 0.8 meters below the ground at a distance of 1 meter from the access control body.
[0032] In this embodiment: the millimeter-wave radar 6 and the geomagnetic sensor 7 are installed on the ground at a distance of five meters and 0.8 meters from the access control body 1, respectively. The millimeter-wave radar 6 is deployed five meters in front of the access control body 1 on the road surface to predict vehicle trajectory and solve the response delay problem. The geomagnetic sensor 7 is set at 0.8 meters to work with the millimeter-wave radar 6 to verify the vehicle position and avoid false triggering.
[0033] As a technical optimization of this utility model, the time-sharing power supply circuit board 8 includes a constant power supply area and a trigger power supply area. The constant power supply area is electrically connected to the prediction sensor group, and the trigger power supply area is electrically connected to the connecting motor 3 and the identity recognition module 5 through a relay.
[0034] In this embodiment, the time-sharing power supply circuit board 8 controls the motor 3 and the identification module 5 through a relay, and normally only supplies a small amount of power to the millimeter-wave radar 6 and the geomagnetic sensor 7 to reduce standby power consumption.
[0035] As a technical optimization of this utility model, the piezoelectric power generation layer 9 includes multiple arrayed piezoelectric ceramic units, and the outer walls of the multiple piezoelectric ceramic units are covered with a ceramic substrate.
[0036] In this embodiment: the piezoelectric power generation layer 9 converts the kinetic energy of the vehicle crushing into electrical energy and stores it in the energy storage battery 12. To continuously power the prediction sensor group, the arrayed piezoelectric ceramic units expand the pressure-bearing area.
[0037] As a technical optimization of this utility model, the identity recognition module 5 includes a binocular camera 10 and an RFID antenna 11, and the power supply lines of the binocular camera 10 and the RFID antenna 11 are independently connected to the time-sharing power supply circuit board 8.
[0038] In this embodiment: the binocular camera 10 captures the driver's face, the RFID antenna 11 reads the vehicle tag, and after verification, the motor 3 drives the brake lever to lift.
[0039] As a technical optimization of this utility model, rubber shock-absorbing pads are provided between the millimeter-wave radar 6, the geomagnetic sensor 7, and the ground.
[0040] In this embodiment, rubber shock-absorbing pads are installed between the millimeter-wave radar 6, the geomagnetic sensor 7, and the ground to buffer and reduce shock.
[0041] The working principle and usage process of this utility model: When the vehicle enters a five-meter range, the millimeter-wave radar 6 detects its speed and direction, and the signal is transmitted to the time-sharing power supply circuit board 8. When the vehicle reaches 0.8 meters, the geomagnetic sensor 7 confirms the position and triggers the relay to close. The trigger power supply area of the time-sharing power supply circuit board 8 supplies power to the motor 3 and the identity recognition module 5. The binocular camera 10 captures the driver's face, and the RFID antenna 11 reads the vehicle tag. After verification, the motor 3 drives the brake lever to lift. The vehicle runs over the piezoelectric power generation layer 9, and the piezoelectric ceramic unit generates electricity and stores it in the energy storage battery 12. After the vehicle has completely driven away, the relay disconnects, and the high-power-consuming equipment is powered off.
[0042] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0043] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. An energy-saving and environmentally friendly access control system, characterized in that: include: Access control body (1), the access control body (1) is equipped with a motor (3), a power supply (4) and an energy storage battery (12). Access control unit (2), the outer wall of the access control unit (2) is equipped with an identity recognition module (5) and a prediction sensor group, the prediction sensor group includes a millimeter-wave radar (6) and a geomagnetic sensor (7), the millimeter-wave radar (6) and the geomagnetic sensor (7) are embedded in the road base in front of the access control body (1); The time-sharing power supply circuit board (8) is fixedly installed inside the access control body (1), and its input end is connected to the power supply (4), and its output end is divided into two paths that are electrically connected to the motor (3) and the identity recognition module (5) respectively. The piezoelectric power generation layer (9) is laid under the road surface in front of the access control body (1) and connected to the energy storage battery (12) through wires.
2. The energy-saving and environmentally friendly access control system according to claim 1, characterized in that: The millimeter-wave radar (6) and the geomagnetic sensor (7) are respectively installed five meters and 0.8 meters below the ground at a distance of 1 meter from the access control body (1).
3. The energy-saving and environmentally friendly access control system according to claim 1, characterized in that: The time-sharing power supply circuit board (8) includes a constant power supply area and a trigger power supply area. The constant power supply area is electrically connected to the prediction sensor group, and the trigger power supply area is electrically connected to the connecting motor (3) and the identity recognition module (5) through a relay.
4. The energy-saving and environmentally friendly access control system according to claim 1, characterized in that: The piezoelectric power generation layer (9) includes multiple arrayed piezoelectric ceramic units, the outer walls of which are covered with a ceramic substrate.
5. The energy-saving and environmentally friendly access control system according to claim 1, characterized in that: The identity recognition module (5) includes a binocular camera (10) and an RFID antenna (11), and the power supply lines of the binocular camera (10) and the RFID antenna (11) are independently connected to the time-sharing power supply circuit board (8).
6. The energy-saving and environmentally friendly access control system according to claim 1, characterized in that: Rubber shock-absorbing pads are installed between the millimeter-wave radar (6), the geomagnetic sensor (7), and the ground.