Intelligent elevator access control device

Abstract

The utility model discloses an intelligent elevator access control device, which relates to the field of intelligent elevator access control and comprises a control module, an input module and an output module, the input module and the output module are connected with the control module, the input module comprises a control key, a camera and a power supply module, and the output module comprises an OLED display screen, a stepping motor, an LED status lamp, a buzzer and a communication module. The control key, the camera, the OLED display screen, the LED status lamp and the buzzer are all arranged on the outer side of the elevator; a camera is adopted for face recognition, the identity of elevator taking personnel can be effectively recognized, unauthorized personnel are prevented from using the elevator, and the safety of the nursing home is improved; the elevator state is displayed in real time, and intuitive visual feedback is provided; abnormal conditions are prompted in time through the LED status lamp and the buzzer, so that management personnel can respond quickly and conveniently; the key design is simple, the operation process and the operation complexity are reduced, and the use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of intelligent elevator access control, and in particular to an intelligent elevator access control device. Background Technology

[0002] As the global aging process continues to accelerate, more and more elderly people are choosing to move into nursing homes to enjoy their later years. As a vertical transportation tool frequently used by the elderly in nursing homes, the safety and convenience of elevators are directly related to their quality of life, and are therefore particularly important.

[0003] In the current technology, traditional elevator access control systems are difficult to meet the special needs of nursing homes. First, traditional elevator access control systems cannot effectively identify the identity of elevator users, allowing unauthorized personnel to use the elevator at will, posing a security risk to nursing homes. For example, unauthorized personnel may enter nursing home floors without permission, threatening the personal safety and property of the elderly. Second, traditional elevator access control systems lack real-time monitoring and management of elevator operation status, making it impossible to promptly detect and handle elevator malfunctions or abnormal use, affecting the normal travel of the elderly and potentially delaying rescue in emergencies. Finally, existing systems are seriously inadequately designed to consider the usage habits of the elderly. Due to declining physical functions, the elderly may experience mobility difficulties and poor eyesight when operating elevators, but most systems have not been optimized for these characteristics, and the operation process has not been simplified to reduce the difficulty of operation for the elderly.

[0004] Therefore, an intelligent elevator access control device is provided to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an intelligent elevator access control device that integrates multiple advanced identification technologies and intelligent control modules, overcoming the many shortcomings of traditional elevator access control systems in terms of security, convenience, and intelligence. It comprehensively improves the security, convenience, and intelligent management level of elevator access control systems in nursing homes, providing nursing homes with an efficient, safe, and humanized elevator usage environment.

[0006] To achieve the above objectives, this utility model provides an intelligent elevator access control device, including a control module and an input module and an output module connected to the control module. The input module includes control buttons, a camera, and a power supply module. The output module includes an OLED display screen, a stepper motor, LED status lights, a buzzer, and a communication module. The control buttons, the camera, the OLED display screen, the LED status lights, and the buzzer are all located on the outside of the elevator.

[0007] Preferably, the control button is connected to the control module via a GPIO interrupt, and the back of the control button has two connection terminals, which are respectively connected to the row line and the ground line.

[0008] Preferably, the camera is connected to the control module via a UART serial port, the camera is connected to the communication module via a shielded cable, the communication module communicates remotely with the user terminal, and the camera is set as an ESP32CAM camera, which has a built-in high-performance image capture unit.

[0009] Preferably, the OLED display screen is connected to the control module via an IIC bus. The OLED display screen is set to black background with red text. The display content of the OLED display screen includes the current position of the elevator, the elevator running status, and the elevator door opening status. The OLED display screen is set to a 128×64 dot matrix OLED12864 display screen.

[0010] Preferably, the stepper motor is connected to the control module via a four-phase PWM signal line, the buzzer is connected to the control module via a PWM signal line, the stepper motor driver chip is set to a ULN2003 chip, and the buzzer playback time is set to 1 second.

[0011] Preferably, the LED status light is connected to the control module via a PWM control pin, and the LED status light includes a red light, a green light, and a yellow light. The control module is set to an STM32 series microcontroller STM32F103C8T6.

[0012] Preferably, the user terminal includes a monitoring interface, an information feedback interface, and a parameter configuration interface, wherein the parameter configuration interface includes resident information parameter configuration and floor permission parameter configuration.

[0013] Therefore, the intelligent elevator access control device of this utility model with the above-described structure has the following beneficial effects:

[0014] (1) Using an ESP32CAM camera for facial recognition, combined with a high-performance image capture unit and a remote communication module, can effectively identify the identity of elevator passengers, prevent unauthorized personnel from using the elevator, and improve the safety of nursing homes;

[0015] (2) The integrated OLED display and LED status lights display the elevator status in real time, providing intuitive visual feedback so that the elderly can quickly understand the elevator status. The LED status lights and buzzer can promptly alert to abnormal situations, making it easier for management personnel to respond quickly.

[0016] (3) The control buttons are connected to the control module via GPIO interrupt, which simplifies the operation process. The button design is simple and suitable for elderly people to operate, reducing the complexity of operation. At the same time, the OLED display adopts a high contrast and wide viewing angle black background with red text design to ensure that the elderly can read information clearly from different angles and improve the ease of use.

[0017] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a structural diagram of an intelligent elevator access control device according to the present invention.

[0019] The components include: 1. Control module; 2. Control buttons; 3. Camera; 4. Power supply module; 5. OLED display screen; 6. Stepper motor; 7. LED status lights; 701. Red light; 702. Green light; 703. Yellow light; 8. Buzzer; 9. Communication module; 10. User terminal; 11. Monitoring interface; 12. Information feedback interface; 13. Parameter configuration interface. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship will also change accordingly.

[0022] Example

[0023] like Figure 1 As shown, this utility model provides an intelligent elevator access control device, including a control module 1 and an input module and an output module connected to the control module 1. The input module includes control buttons 2, a camera 3 and a power supply module 4. The power supply module 4 provides a stable power supply for the entire system to ensure the normal operation of each part of the system. The output module includes an OLED display screen 5, a stepper motor 6, an LED status light 7, a buzzer 8 and a communication module 9.

[0024] Control button 2, camera 3, OLED display 5, LED status light 7 and buzzer 8 are all located on the outside of the elevator. Control button 2 is connected to control module 1 via GPIO interrupt. There are two connection terminals on the back of control button 2, which are connected to the line and ground respectively, for users to input operation commands and call the elevator.

[0025] Camera 3 is connected to control module 1 via UART serial port and to communication module 9 via shielded cable. The use of shielded cable to connect communication pins effectively reduces the impact of external electromagnetic interference on image data transmission. Communication module 9 communicates remotely with user terminal 10. Camera 3 is set as an ESP32CAM camera to capture user facial images. This module can perform face recognition to verify user identity. The ESP32CAM camera has a built-in high-performance image capture unit that can accurately capture facial images.

[0026] The user terminal 10 includes a monitoring interface 11, an information feedback interface 12, and a parameter configuration interface 13. The parameter configuration interface 13 includes resident information parameter configuration and floor permission parameter configuration.

[0027] The OLED display 5 is connected to the control module 1 via the IIC bus. The screen of the OLED display 5 is set to black background with red text. The display content of the OLED display 5 includes the current position of the elevator, the elevator running status, and the elevator door opening status. The OLED display 5 is set to a 128×64 dot matrix OLED12864 display.

[0028] The OLED12864 display boasts advantages such as high contrast, wide viewing angle, and fast response time. High contrast: When displaying black, pixels are completely off, emitting no light, presenting a deep, pure black that contrasts sharply with illuminated pixels, greatly enhancing the image's depth and three-dimensionality. Wide viewing angle: Whether viewed directly or at a large angle, the brightness and color performance of the image remain relatively consistent, with virtually no distortion or color deviation. Visitors in different positions can clearly see door opening prompts, operation guides, and other content on the screen, avoiding misreading information due to viewing angle issues and effectively improving interaction efficiency. Fast response time: It can quickly switch screens, achieving a high refresh rate, performing exceptionally well when playing dynamic images or rapidly updating information. In smart access control systems, when the system status changes instantly, such as switching from waiting for verification to successful verification and door opening, the screen can immediately update the displayed content, providing smooth and lag-free real-time feedback to users, making the operating experience smoother and more natural.

[0029] Stepper motor 6 is connected to control module 1 via a four-phase PWM signal line to simulate elevator floor positioning and operation control. By controlling the number of rotations of the motor, it simulates the upward and downward operation of the elevator. In practical applications, to meet the requirements of access control door opening and closing speed and smoothness in different scenarios, microstepping drive technology is used to control stepper motor 6, subdividing the motor step angle to 1 / 8 or 1 / 16 of the original. During the opening or closing of the access control door, the motor speed increases or decreases smoothly, avoiding instantaneous impact and ensuring safe operation of the equipment.

[0030] The stepper motor 6 is driven by a ULN2003 chip, which integrates a Darlington transistor array and has good current driving capability.

[0031] Buzzer 8 is connected to control module 1 via a PWM signal line, and the playback time of buzzer 8 is set to 1 second.

[0032] LED status light 7 is connected to control module 1 via PWM control pin. LED status light 7 includes red light 701, green light 702 and yellow light 703. Control module 1 is set to STM32 series microcontroller STM32F103C8T6.

[0033] Before practical application, users' facial feature information needs to be entered into a facial database in order to recognize facial information. At the same time, in order to ensure the accuracy of facial information entry, it is necessary to enter photos of faces from different positions and distances to improve accuracy and reduce the occurrence of failure to recognize faces due to entry errors.

[0034] In practical applications, the ESP32CAM camera captures photos of faces. If a face is recognized, the program will run, during which it will capture photos of the face. The photos captured by the ESP32CAM camera will be cropped to generate a processed face image that conforms to the specified format. This face image will be compared with images in the face database. The comparison will generate a comparison score. If the score is greater than a certain value, it will be identified as the same person. If the score is less than a certain value, it will not be identified as the same person.

[0035] If the same person is identified, the OLED12864 display shows "Door opening permission confirmed"; if the same person is not identified, the OLED12864 display shows "Insufficient permissions, door opening prohibited".

[0036] After authentication, the user presses control button 2. When control button 2 is pressed, the corresponding row line and ground line are connected. The STM32F103C8T6 detects the level change through the scanning program, determines the key value of the pressed control button 2, and the information of control button 2 is quickly transmitted to the STM32F103C8T6. The STM32F103C8T6 processes and triggers the corresponding elevator operation command.

[0037] While the elevator is running, the STM32F103C8T6 controls the number of rotations of the stepper motor 6 according to the elevator's direction of travel and the target floor to simulate the elevator's upward and downward operation. Each rotation represents the elevator moving one floor. The STM32F103C8T6 records the number of rotations and displays the current floor information on the OLED12864 display screen. The OLED12864 display screen graphically displays the elevator's current position, running status, and door opening / closing status to the user in real time, such as prompting "Door Opening" or "Floor 3-5" and other information.

[0038] LED status lights 7 serve as intuitive indicators of system status, displaying the elevator's current status and operational feedback to users through different colored lights. The system can also adjust the brightness and flashing mode of the lights based on the current status. During elevator operation, the red LED flashes to warn users not to open the door, ensuring safety. When an unauthorized user is detected or an attempt is made to force the door open, the red LED remains lit while triggering the buzzer 8 to play a short blast. When the user successfully authenticates and the elevator reaches the target floor, the green LED remains lit, indicating that the door can be safely opened. When the system detects a fault or abnormal situation, the yellow LED lights up, issuing a warning to users and management personnel via the information feedback interface 12, indicating the need for immediate inspection and maintenance.

[0039] Therefore, the intelligent elevator access control device of this utility model adopts the above-mentioned structure, which uses a camera for facial recognition to effectively identify the identity of elevator passengers, prevent unauthorized personnel from using the elevator, and improve the security of nursing homes; it displays the elevator status in real time, providing intuitive visual feedback; it promptly alerts abnormal situations through LED status lights and buzzers, facilitating rapid response from management personnel; and its simple button design reduces the operation process and complexity, improving ease of use.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. An intelligent elevator access control device, characterized in that, The elevator includes a control module and an input module and an output module connected to the control module. The input module includes control buttons, a camera, and a power supply module. The output module includes an OLED display screen, a stepper motor, LED status lights, a buzzer, and a communication module. The control buttons, the camera, the OLED display screen, the LED status lights, and the buzzer are all located on the outside of the elevator.

2. The intelligent elevator access control device according to claim 1, characterized in that, The control button is connected to the control module via GPIO interrupt. The back of the control button has two connection terminals, which are connected to the row line and the ground line, respectively.

3. The intelligent elevator access control device according to claim 1, characterized in that, The camera is connected to the control module via a UART serial port, and the camera is connected to the communication module via a shielded cable. The communication module communicates remotely with the user terminal. The camera is set as an ESP32CAM camera, which has a built-in high-performance image capture unit.

4. The intelligent elevator access control device according to claim 1, characterized in that, The OLED display screen is connected to the control module via the IIC bus. The screen of the OLED display screen is set to black background with red text. The display content of the OLED display screen includes the current position of the elevator, the elevator running status, and the elevator door opening status. The OLED display screen is set to a 128×64 dot matrix OLED12864 display screen.

5. The intelligent elevator access control device according to claim 1, characterized in that, The stepper motor is connected to the control module via a four-phase PWM signal line, and the buzzer is connected to the control module via a PWM signal line. The stepper motor's driver chip is set to a ULN2003 chip, and the buzzer's playback time is set to 1 second.

6. The intelligent elevator access control device according to claim 1, characterized in that, The LED status lights are connected to the control module via PWM control pins. The LED status lights include red, green and yellow lights. The control module is set to an STM32F103C8T6 microcontroller.

7. The intelligent elevator access control device according to claim 3, characterized in that, The user terminal includes a monitoring interface, an information feedback interface, and a parameter configuration interface. The parameter configuration interface includes resident information parameter configuration and floor permission parameter configuration.

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