Electric door automatic control system triggered based on Bluetooth connection state

Abstract

The invention relates to the technical field of electric door automatic control, in particular to an electric door automatic control system triggered based on a Bluetooth connection state, which comprises a Bluetooth module used for establishing Bluetooth connection with a vehicle or a mobile terminal and monitoring the connection state in real time; the relay control module is in signal connection with the Bluetooth module and continuously sends a door opening control signal to the door control module during the duration of Bluetooth connection; the door control module is used for receiving the driving signal of the relay control module and controlling an electric door motor to execute door opening or closing actions; wherein when the Bluetooth connection is interrupted, the relay control module immediately cuts off the output of the door opening control signal and triggers the door closing control signal. Through the hard linkage logic of the Bluetooth connection state and the physical power-off, the core problems of low safety, response delay and high cost in the existing gating technology are solved, and the system is particularly suitable for scenes with strict requirements on safety and real-time performance, such as basement, villa and the like, and has remarkable technical progress and market competitiveness.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic control of electric doors, and more specifically, to an automatic control system for electric doors triggered based on the Bluetooth connection status. Background Art

[0002] In recent years, Bluetooth technology has been widely used in intelligent access control systems. Especially in scenarios such as garage doors and villa doors, users can achieve keyless access through mobile phones or vehicle Bluetooth. In the prior art, the mainstream Bluetooth door control solutions mostly adopt a single trigger + status self-locking mechanism, and its typical working process is as follows: Send a single open door command during Bluetooth connection to drive the motor or electromagnetic lock to open the door body, and then rely on the mechanical structure or electronic self-locking circuit to maintain the open state of the door; The closing trigger depends on additional conditions. For example, trigger the closing after detecting the user's departure through an infrared sensor; set a countdown timer to automatically close the door after a delay when the door is opened; the user sends a Bluetooth command manually to close the door for the second time.

[0003] However, the above solutions have the following technical defects: First, the degree of automation is low: users need to manually trigger the closing or rely on sensors for detection, and "seamless passage" cannot be achieved. At the same time, the countdown mechanism cannot adapt to dynamic scenarios (such as short-term user stays), and the time parameters need to be adjusted repeatedly; Second, the security is insufficient: mechanical self-locking may fail due to aging or external force impact, resulting in the accidental opening of the door body; the closing action controlled by software logic may be bypassed due to system crashes, network delays, or hacker attacks; Third, there is a response delay: the closing action lags due to sensor detection or the countdown mechanism, posing a risk of tailgating; Fourth, the cost and complexity are high: additional hardware such as sensors and timing modules need to be integrated, increasing the system cost and failure points; Fifth, the anti-interference ability is weak: when the Bluetooth signal is interfered by the 2.4GHz frequency band, it may lead to misjudgment or connection interruption.

[0004] In view of this, an automatic control system for electric doors triggered based on the Bluetooth connection status is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic control system for electric doors triggered based on the Bluetooth connection status, so as to solve the problems of low automation, insufficient security, response delay, high cost and complexity, and weak anti-interference ability in the existing automatic control system for electric doors triggered based on the Bluetooth connection status.

[0006] To solve the above technical problems, the present invention provides an automatic control system for electric doors triggered based on the Bluetooth connection status, which is applied to the electric door control scenario and includes: A Bluetooth module is used to establish a Bluetooth connection with a vehicle or a mobile terminal and monitor the connection status in real time; A relay control module is signal - connected to the Bluetooth module and continuously sends an opening control signal to the door control module during the duration of the Bluetooth connection; A door control module receives the driving signal from the relay control module and controls the electric door motor to perform opening or closing actions; wherein, when the Bluetooth connection is interrupted, the relay control module immediately cuts off the output of the opening control signal and triggers a closing control signal.

[0007] As a further improvement of this technical solution, the Bluetooth module is a low - power Bluetooth module, and when any condition of the signal strength threshold and the preset distance threshold is met, the Bluetooth connection is determined to be valid.

[0008] As a further improvement of this technical solution, the Bluetooth module integrates an authentication unit and establishes a connection only when an authorized vehicle Bluetooth MAC address or a mobile terminal device unique identifier is recognized.

[0009] As a further improvement of this technical solution, the Bluetooth module includes a priority connection logic unit. When multiple authorized Bluetooth devices are detected simultaneously, the priority connection logic unit responds to a preset master device signal and switches to a standby device to maintain the connection after the master device disconnects.

[0010] As a further improvement of this technical solution, the Bluetooth module includes an interference sub - unit. The interference sub - unit scans the 2.4GHz frequency band through dynamic frequency selection technology, automatically switches to an idle channel, and avoids channel conflicts with Wi - Fi or microwave devices.

[0011] As a further improvement of this technical solution, the relay control module includes a delay sub - unit, and the delay sub - unit is used to trigger the closing control signal after a preset time delay after the Bluetooth connection is interrupted.

[0012] As a further improvement of this technical solution, the relay control module uses a normally - closed relay, remains in the energized and attracted state during the Bluetooth connection to maintain the opening signal, and automatically resets to the de - energized state after the Bluetooth is disconnected to trigger closing.

[0013] As a further improvement of this technical solution, a dynamic power consumption regulation protocol is adopted between the Bluetooth module and the relay control module, and the signal transmission frequency is reduced to a preset Hz after the Bluetooth connection is stable to save energy consumption.

[0014] As a further improvement of this technical solution, the door control module includes a status indication unit, and the status indication unit uses LED lights or a buzzer to prompt the current Bluetooth connection status and the door body movement process.

[0015] Beneficial effects of the present invention compared with the prior art: 1. In the automatic control system of the electric door triggered by the Bluetooth connection status, through the connection and disconnection of Bluetooth, the opening and closing of the electric door can be directly and automatically controlled, so that there is no need for manual control of the opening and closing of the electric door. Compared with the existing switching methods, it is efficient and convenient.

[0016] 2. In the automatic control system of the electric door triggered by the Bluetooth connection status, after the Bluetooth connection is interrupted, the relay directly cuts off the power supply, and the door body closes immediately, avoiding the risk of mechanical self-locking failure or software vulnerability. At the same time, it is applicable to scenarios with high security requirements such as basements and villas, avoiding the trailing hidden danger caused by the closing delay in the traditional solution.

[0017] 3. In the automatic control system of the electric door triggered by the Bluetooth connection status, by setting a priority connection logic unit and a status indication unit, when multiple vehicles enter and exit the basement, the main device automatically switches to the standby device signal after leaving, avoiding frequent opening and closing of the door body, and the LED / buzzer prompts the connection and the door body action, improving the user experience and operation transparency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the system structure of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All secondary embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Currently, Bluetooth technology is widely used in intelligent access control systems, especially in scenarios such as garage doors and villa doors, where users can achieve keyless access through the Bluetooth of mobile phones or vehicles. In the prior art, the mainstream Bluetooth door control solutions mostly adopt a single trigger + status self-locking mechanism, but there are technical defects such as low automation level, insufficient security, response delay, high cost and complexity, and weak anti-interference ability; In view of this, please refer to Figure 1 As shown, the object of the present invention is to provide an automatic control system for an electric door triggered by the Bluetooth connection status. The automatic control system for an electric door triggered by the Bluetooth connection status is applied to the electric door control scenario and includes: A Bluetooth module for establishing a Bluetooth connection with a vehicle or a mobile terminal and real-time monitoring the connection status; A relay control module is signal-connected to the Bluetooth module and continuously sends an opening control signal to the door control module during the continuous Bluetooth connection; The gating module receives the driving signal from the relay control module and controls the electric door motor to perform the opening or closing action. Among them, when the Bluetooth connection is interrupted, the relay control module immediately cuts off the output of the opening control signal and triggers the closing control signal.

[0021] In the electric door automatic control system triggered based on the Bluetooth connection status, through the connection and disconnection of Bluetooth, the opening and closing of the electric door can be directly and automatically controlled, thus eliminating the need for manual control of the electric door. Compared with the existing switching methods, it is efficient and convenient. After the Bluetooth connection is interrupted, the relay directly cuts off the power supply, and the door body closes immediately, avoiding the risk of mechanical self-locking failure or software vulnerabilities. It is suitable for scenarios with high security requirements such as basements and villas, and avoids the trailing hidden danger caused by the closing delay in the traditional solution. At the same time, by setting the priority connection logic unit and the status indication unit, when multiple vehicles enter and exit the basement, the main device automatically switches to the standby device signal after leaving, avoiding frequent opening and closing of the door body, and the LED / buzzer prompts the connection and the door body action, enhancing the user experience and operation transparency.

[0022] Considering that traditional Bluetooth modules (such as Classic Bluetooth) have high power consumption and are difficult to meet the long-term standby power consumption requirements of basement / villa gating systems, and there are limitations in multi-platform compatibility, the Bluetooth module is a low-power Bluetooth module and adopts a low-power Bluetooth protocol (BLE 5.0 and above versions). The standby power consumption of BLE is only 0.01 - 0.5 mA, which is greatly optimized compared to 1 - 30 mA of traditional Bluetooth. At the same time, BLE supports iOS / Android full-platform devices and in-vehicle Bluetooth systems (such as Tesla and BMW iDrive), ensuring seamless cross-terminal compatibility. In complex environments such as metal electric doors and multi-obstacle basements, relying solely on signal strength (RSSI) is prone to misjudgment due to multipath reflection and signal attenuation (such as a weak signal of -80 dBm accidentally triggering the door opening), and relying only on a fixed distance threshold cannot adapt to the differences in Bluetooth transmission power of different vehicles (for example, the Bluetooth power of electric vehicles is usually +4 dBm, and that of fuel vehicles is 0 dBm), resulting in insufficient reliability of the control logic. Therefore, a dual-mode trigger logic is adopted, and the Bluetooth connection is determined to be valid when any of the following conditions is met: Signal strength threshold: RSSI ≥ -70 dBm (effectively filtering out weak signal interference caused by wall occlusion, etc.); Dynamic distance threshold: Based on the angle of arrival (AoA) / angle of departure (AoD) ranging algorithm of Bluetooth 5.1, a 10-meter effective trigger range (±0.3-meter accuracy) is set to calibrate the spatial distance in real time. Through the dual-mode trigger logic, the connection stability is improved in the metal door body and multi-obstacle basement environment, and at the same time, it is compatible with the differences in Bluetooth transmission power of different vehicles (such as electric vehicles and fuel vehicles), enhancing the scene adaptability.

[0023] Traditional Bluetooth gating systems rely on APP dynamic codes or password verification, which have the following defects: First, the success rate of man-in-the-middle attacks (MITM) is as high as 35% (based on actual measurements by Shodan). Hackers can intercept Bluetooth communication data packets and forge authorization signals. Second, illegal devices can disguise themselves as authorized devices through MAC address randomization (such as iOS private addresses), with a high rate of counterfeiting access. Third, users need to manually open the APP for verification every time they pass through, with an average time consumption of 5.3 seconds (the measured average value for iOS / Android). The experience is fragmented. Therefore, the Bluetooth module integrates an identity verification unit, and only establishes a connection when an authorized vehicle Bluetooth MAC address or the unique identifier of a mobile terminal device is recognized. By pre-authorizing the fixed identifier of the in-vehicle Bluetooth MAC address (such as 00:1A:7D:DA:71:13 for Tesla Model Y) or the mobile phone (such as the iPhone Bluetooth address), device signature verification (such as the ECDSA algorithm) is required during connection to prevent one-way authentication from being bypassed. At the same time, the unique identifier of the device can also be extended. For example, iOS devices can extract the "custom device fingerprint" in Apple advertising data (such as the unique ID generated by the DeviceCheck API), and Android devices can combine the Bluetooth address with the device hardware serial number (such as IMEI) to generate a composite identifier. This composite identifier needs to meet both the address and the hardware fingerprint, making the access rate of illegal devices almost zero. Moreover, users do not need to perform any operations, and simply carrying the authorized device close by will automatically trigger verification, improving the passage efficiency.

[0024] In the scenario of multi-device coexistence in basements or villas, traditional Bluetooth door control systems have three core defects: First, when multiple devices simultaneously initiate connection requests (such as 3 cars + 2 mobile phones in a family), it causes the door to open and close frequently every hour, shortening the motor life. Second, visitor devices preempt control due to the instantaneous advantage of signal strength (RSSI), resulting in obstruction of the owner's passage. Third, after the main device (such as the owner's vehicle) leaves, the standby device needs to be manually reconnected (with an average time of 5 seconds), increasing the risk of the door closing accidentally and pinching. Therefore, the Bluetooth module includes a priority connection logic unit. When multiple authorized Bluetooth devices are detected simultaneously, the priority connection logic unit responds to the preset main device signal and switches to the standby device to maintain the connection after the main device disconnects. Specifically, the owner's vehicle / mobile phone is set as the highest priority (Priority 1), and the standby device (such as the visitor's mobile phone) is set as the secondary priority (Priority 2). Based on the comprehensive scoring of Bluetooth signal strength (RSSI), connection stability (packet loss rate), and device movement speed (Doppler shift), the optimal device is selected among the secondary priorities (Priority 2). When the main device signal disappears, the system detects the disconnection within 100 ms and automatically switches to the standby device. During the connection of the standby device, it continuously scans for the main device signal and immediately switches back to the main connection once the main device returns. Through this technical means, when multiple devices coexist, only the device with the highest priority is responded to, and the door remains continuously open, extending the motor life. Also, the owner's device always has priority to pass, preventing visitor devices from preempting control. At the same time, after the main device leaves, the standby device quickly takes over, avoiding accidental door closure.

[0025] In environments such as basements and villas, there are a large number of 2.4GHz band devices (Wi-Fi cameras, wireless remote controls, microwave radars). Traditional Bluetooth modules use fixed channels and are vulnerable to interference. For example, Wi-Fi channels (such as 1 / 6 / 11) partially overlap with Bluetooth channels (0-79), resulting in an increase in the data packet loss rate; devices such as microwave ovens and wireless doorbells occupy the entire frequency band for a short time, causing Bluetooth connections to be intermittent; the metal material of the basement electric door intensifies signal reflection, and multipath interference is significant. Therefore, the Bluetooth module includes an interference sub-unit. The interference sub-unit scans the 2.4GHz band through dynamic frequency selection technology, automatically switches to an idle channel, and avoids channel conflicts with Wi-Fi or microwave devices. Specifically: it monitors the 2.4GHz band (2402-2480MHz) in real time, identifies the signal strength and occupancy rate of each sub-channel, distinguishes Wi-Fi signals (bandwidth 20MHz), Bluetooth signals (1MHz), and microwave pulses (full-band transient) through FFT (Fast Fourier Transform), identifies the interference source, avoids the main channels occupied by Wi-Fi (such as 1 / 6 / 11), and switches to idle sub-channels (such as 15 / 20 / 25). When a microwave transient interference is detected, the transmission is paused for 50ms and then retried to avoid continuous collisions; thus reducing the number of accidental door closing events and the data packet loss rate caused by interference; Since Bluetooth connections may be unintentionally disconnected due to short-term signal interference (such as human body occlusion, Wi-Fi burst interference) or the user's brief departure from the coverage area (such as a short stay at the basement door), if the door closing action is immediately triggered, the following problems will occur. First, the door may accidentally close and pinch the user or vehicle (such as when the car owner is getting in or out of the car). Second, frequent false triggers will shorten the service life of components such as motors and relays. Third, the user needs to repeatedly trigger the door opening again, which damages the traffic fluency and reduces the user experience. Therefore, the relay control module includes a delay sub-unit. The delay sub-unit is used to delay a preset time after the Bluetooth connection is interrupted and then trigger the door closing control signal. Specifically: based on the RC charge and discharge principle or a digital timer (such as a 555 chip / microcontroller TIM module), the delay time (adjustable from 0 to 10 seconds) is set. After the Bluetooth is disconnected, the countdown is started. If the reconnection is successful within the delay period, the door closing instruction is cancelled; at the same time, according to the historical false trigger frequency (such as the number of false triggers in the past 1 hour > 3 times), the delay is automatically extended (such as from 2 seconds to 5 seconds); thus reducing the number of accidental door closings caused by short-term interference, and keeping the door open during the user's short stay (such as when carrying items), reducing the risk of being pinched; Traditional gating systems use normally open relays, which need to be continuously powered to maintain the door open state. There are the following problems. First, if the system power supply is interrupted (such as power failure, battery depletion), the normally open relay resets to the off state, and the door closes unexpectedly, which may cause people or vehicles to be trapped. Second, continuous power supply to the relay coil is required to maintain the door open (typical power consumption is 0.5 - 2W), which exacerbates the power consumption pressure of the battery-powered system. Third, the normally open relay is prone to failure due to contact oxidation during frequent suction / release. Therefore, the relay control module uses a normally closed relay, which remains powered and suctioned during Bluetooth connection to maintain the door open signal, and automatically resets to the power-off state after Bluetooth disconnection to trigger door closing. Specifically: during Bluetooth connection, power is supplied to the relay coil → the contact is disconnected → the gating module receives a continuous high-level signal → drives the electric door to open and remain open; when Bluetooth is disconnected or power is off: the relay coil is powered off → the contact automatically closes → the gating module receives a low-level signal → immediately triggers the door closing action. Through this technical solution, any system power failure (including malicious damage) triggers door closing, improving safety. The normally closed relay only needs to be powered during Bluetooth connection and has zero power consumption after disconnection; at the same time, the contact only disconnects during Bluetooth connection and naturally closes after disconnection, reducing the number of operations and extending the mechanical life; through the technical combination of reverse control of the normally closed relay + fail-safe hardware binding + contact strengthening process, this embodiment realizes the absolute safety mechanism of "power off means door closing", while greatly reducing energy consumption and extending the equipment life. It is especially suitable for scenarios with strict requirements for safety and reliability such as basements and villas, solving the industry pain points of traditional solutions relying on software logic and being easily affected by power supply interruption, and providing a hardware-level safety guarantee benchmark for intelligent gating systems.

[0026] The traditional Bluetooth protocol stack cannot enter deep sleep during the connection state maintenance phase, resulting in high static power consumption. Therefore, a dynamic power consumption regulation protocol is adopted between the Bluetooth module and the relay control module. After the Bluetooth connection is stable, the signal transmission frequency is reduced to a preset Hz (such as 1 Hz) to save energy. The specific dynamic power consumption regulation protocol is as follows: after the connection is stable, the Bluetooth module enters the "doze mode", wakes up for 2 ms every 100 ms to detect the channel state, reserves a dedicated advertising channel (Advertising Channel 39), and an emergency instruction (such as a door closing trigger) can immediately wake up the module. Multiple control instructions are packed into a single data packet for transmission to reduce the number of RF activations. Considering that excessive frequency reduction may cause signal delay or connection loss, leading to the risk of misoperation, a dual-threshold fault tolerance mechanism is also added to the dynamic power consumption regulation protocol. Specifically, if packet loss occurs for three consecutive cycles, the frequency is automatically increased to the previous level. When RSSI < -80 dBm, the frequency is triggered to roll back and the signal enhancement mode is started (such as increasing the transmission power to +4 dBm). Reed-Solomon coding is introduced in low-frequency communication, and the error correction ability is improved to 3-bit errors per packet. Through the technical combination of adaptive frequency adjustment + protocol stack sleep optimization + dual-threshold fault tolerance, this embodiment reduces the system energy consumption while ensuring the real-time performance and reliability of communication, and solves the "high power consumption - short lifespan" contradiction that Bluetooth door control devices have long faced. It is especially suitable for scenarios such as basements and villas that require long battery life and low maintenance, providing a benchmark power consumption optimization solution for the intelligent access control field.

[0027] In the basement or villa door control scenario, users need to keep track of the system status in real time (such as whether the Bluetooth connection is successful, the door is opening / closing, fault alarm, etc.). The traditional solutions lack intuitive feedback, leading to the following problems. First, the operation is opaque. Users cannot confirm whether the Bluetooth is connected and may misjudge the door fault (such as repeated triggering). Second, there are potential safety hazards. When the door closes accidentally or gets stuck, there is no warning, which is likely to cause pinching or equipment damage. Third, maintenance is difficult. Fault troubleshooting relies on professional tools and it is impossible to quickly locate problems through simple indicators. Therefore, the door control module includes a status indication unit. The status indication unit uses LED lights or a buzzer to prompt the current Bluetooth connection status and the door movement process. Specifically: The LED lights show different levels. Blue always on: Bluetooth is connected and the door remains open. Green flashing (1Hz): The door is opening / closing. Red flashing quickly (5Hz): Bluetooth connection is interrupted or the door movement is abnormal. Yellow flashing slowly (0.5Hz): Low battery or system self-check. The buzzer gives graded warnings. Single short beep (0.1 second): The door movement is completed. Three long beeps (0.5 second each): An obstacle is detected or the motor is overloaded. Continuous beeping: Emergency fault (such as relay adhesion). At the same time, an energy-saving mode is set. After the door is stationary for more than 30 seconds, the LED brightness automatically drops to 10%, and the buzzer is silent. Also, considering that the metal basement door or complex electromagnetic environment may interfere with the LED / buzzer signal transmission, resulting in the indicator being out of sync with the actual status. Therefore, hardware-level status synchronization circuit technology and ambient light adaptive adjustment technology are adopted. The hardware-level status synchronization circuit technology directly connects the LED / buzzer drive signal to the GPIO pin of the door control module, bypassing the main control MCU, ensuring that even if the MCU crashes, the indicator is still consistent with the physical state of the door. Differential signal transmission is used to suppress common-mode interference (such as voltage fluctuations caused by the start / stop of the motor in the basement). The ambient light adaptive adjustment technology detects the ambient brightness through a photosensitive sensor and dynamically adjusts the LED brightness (such as increasing to 100% brightness in a dark basement environment), and the buzzer volume is dynamically adjusted according to the ambient noise decibel value (such as decreasing to 50dB in a quiet villa environment), thus improving the anti-interference ability and enhancing the environmental adaptability. Through the technical combination of multi-modal graded indication + hardware synchronization + intelligent energy saving, the present invention ensures that users can intuitively perceive the system status while significantly improving safety, operation efficiency, and equipment battery life. It is especially suitable for basements with complex lighting and villas that require low noise, solving the pain points of the "black box operation" of traditional door control systems and providing a state feedback benchmark solution of "user-friendly - high safety - long battery life" for the intelligent access control field.

[0028] When replacing an electric door of the same model, the user needs to retain the original remote control code, door body travel time, limit parameters and other configurations to avoid repeated settings, and at the same time reduce the installation time and learning cost. Therefore, the radio frequency signal copying technology is adopted to transfer the parameters of the original electric door to the door control module of the new electric door, so that when replacing the door body of the same model, the user does not need to reset the parameters, shortening the deployment time. The newly produced electric doors need to be adapted to multiple brands of door machines (such as Hos, Rees, Aorun), and there are differences in the control protocols (such as Modbus, CAN bus) and hardware interfaces (such as RS-485, dry contacts) of different brands of door machines. If a control system is customized and developed for each brand, the R & D cost and production cycle will be greatly increased. Therefore, the door control module includes preset ports, and the preset ports support the adaptation and connection of door machines of brands such as Hos, Rees, Aorun, saving the customized development cost. Through the dual-mode adaptation of copying and cloning and reserved ports, seamless migration and full-scenario compatibility of the old and new door control systems are achieved.

[0029] In summary, in this solution, the control steps of the basement or villa electric door are as follows: S1. The Bluetooth module continuously scans the Bluetooth signals of vehicles or mobile terminals within a preset range; S2. When an authorized device enters the connection range, a Bluetooth connection is established and the relay control module is triggered to continuously output an opening signal; S3. The door control module drives the electric door to open according to the opening signal and remains open during the Bluetooth connection; S4. When the signal is interrupted due to the authorized device exceeding the Bluetooth connection range, the relay control module immediately cuts off the opening signal and sends a closing instruction; S5. The door control module responds to the closing instruction and controls the electric door to close.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic control system for an electric door triggered by the Bluetooth connection status, characterized in that Applied to the electric door control scenario, including: A Bluetooth module, used to establish a Bluetooth connection with a vehicle or a mobile terminal and monitor the connection status in real time; A relay control module, signal-connected to the Bluetooth module, and continuously sends an opening control signal to the door control module during the Bluetooth connection; A door control module, receiving the driving signal from the relay control module, and controlling the electric door motor to perform opening or closing actions; wherein, when the Bluetooth connection is interrupted, the relay control module immediately cuts off the output of the opening control signal and triggers a closing control signal.

2. The automatic electric door control system triggered based on the Bluetooth connection status according to claim 1, wherein: The Bluetooth module is a low-power Bluetooth module, and when any condition of the signal strength threshold and the preset distance threshold is met, the Bluetooth connection is determined to be valid.

3. The automatic electric door control system triggered based on the Bluetooth connection status according to claim 1, characterized in that: The Bluetooth module integrates an authentication unit and establishes a connection only when an authorized vehicle Bluetooth MAC address or a unique identifier of a mobile terminal device is recognized.

4. The automatic electric door control system triggered based on the Bluetooth connection status according to claim 1, wherein: The Bluetooth module includes a priority connection logic unit. When multiple authorized Bluetooth devices are detected simultaneously, the priority connection logic unit responds to a preset master device signal and switches to a standby device to maintain the connection after the master device disconnects.

5. The automatic electric door control system triggered based on the Bluetooth connection status according to claim 1, characterized in that: The Bluetooth module includes an interference sub-unit. The interference sub-unit scans the 2.4GHz band through dynamic frequency selection technology, automatically switches to an idle channel, and avoids channel conflicts with Wi-Fi or microwave devices.

6. The automatic electric door control system triggered based on the Bluetooth connection status according to claim 1, wherein: The relay control module includes a delay sub-unit, which is used to delay a preset time after the Bluetooth connection is interrupted and then trigger the closing control signal.

7. The automatic electric door control system triggered based on the Bluetooth connection status according to claim 1, characterized in that: The relay control module uses a normally closed relay, remains energized and attracted during the Bluetooth connection to maintain the opening signal, and automatically resets to the power-off state after the Bluetooth is disconnected to trigger closing.

8. The automatic electric door control system triggered based on the Bluetooth connection status according to claim 1, wherein: A dynamic power consumption regulation protocol is adopted between the Bluetooth module and the relay control module to reduce the signal transmission frequency to a preset Hz after the Bluetooth connection is stable to save energy consumption.

9. The automatic electric door control system triggered based on the Bluetooth connection status according to claim 1, characterized in that: The door control module includes a status indication unit, and the status indication unit uses LED lights or a buzzer to prompt the current Bluetooth connection status and the door movement process.

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