Intelligent door magnetic controller

Abstract

This utility model discloses an intelligent door magnetic controller. An AC-DC isolated flyback switching power supply module provides the power required for the normal operation of other modules. A DC-DC step-down power supply module connects to the 12V DC power output from the flyback switching power supply module, and outputs 5V power after BUCK conversion. An electromagnetic drive module connects to a WiFi main control module, controlling the opening and closing of the door by switching the power supply of the magnetic lock on or off. A door status detection module detects that when the door is closed, the photoelectric signal from the emitter of the reflective photoelectric switch is reflected by the door and transmitted to the receiver, causing the signal output from the door status detection module to the WiFi main control module to change from high to low. When the door is open, the receiver of the reflective photoelectric switch cannot receive the photoelectric signal from the emitter, and the output signal remains high. The WiFi main control module, as the core of the entire controller, collects the status of the door switch and photoelectric switch in real time, and also acts as a network module to interact with the server via WiFi.

Description

Technical Field

[0001] This utility model belongs to the field of controller technology, specifically relating to an intelligent door magnetic controller. Background Technology

[0002] Most door closer controllers on the market today use a password pad or fingerprint to open the door. When the correct password is entered or the fingerprint is successfully verified, the controller cuts off the power supply to the magnetic lock to open the door.

[0003] However, as the door's rotating mechanism ages and rusts, the resistance to opening and closing the door continuously increases. At the same time, the door magnet is attracted by dust and other impurities in the environment, causing its suction power to weaken. In the typical scenario where people close the door behind them when leaving the house, it is very easy for the door to be left unclosed. Utility Model Content

[0004] In view of the above-mentioned problems, this utility model provides an intelligent door magnetic controller.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A smart door magnetic controller includes an AC-DC isolated flyback switching power supply module, a DC-DC buck power supply module, an LDO module, an electromagnetic drive module, a door status detection module, a voice module, and a WiFi main control module.

[0007] The AC-DC isolated flyback switching power supply module is used to connect to a 220V AC input power supply and output 12V DC power to provide the power required for the normal operation of other modules.

[0008] The DC-DC step-down power supply module is connected to the 12V DC power output from the flyback switching power supply module at its input terminal. After being converted by BUCK, it outputs 5V power, which is then supplied to the LDO module and the speaker driver amplifier.

[0009] The LDO module is connected to a 5V DC power supply from a DC-DC step-down power supply module and outputs a 3.3V power supply, which is then supplied to the voice chip and the WiFi main control module.

[0010] The electromagnetic drive module is connected to the WiFi main control module and controls the opening and closing of the door by turning the power of the magnetic lock on or off.

[0011] When the door is closed, the photoelectric signal from the emitter of the reflective photoelectric switch is reflected by the door and transmitted to the receiver. The signal output by the door status detection module to the WiFi main control module changes from high level to low level. When the door is open, the receiver of the reflective photoelectric switch cannot receive the photoelectric signal from the emitter, and the output signal remains high.

[0012] The voice module receives the voice packets to be played from the WiFi master control module through the IIS voice bus, the audio codec chip performs signal processing including decoding and digital-to-analog conversion, and drives the speaker to play the required sound through the power amplifier;

[0013] The WiFi main control module, as the core of the entire controller, collects the status of the door control switch and photoelectric switch in real time. At the same time, as a network module, it interacts with the server via WiFi and controls the output of the electromagnetic drive module and the voice module based on the obtained signals.

[0014] In one possible implementation, the AC-DC isolated flyback switching power supply module includes a fuse F1, a first discharge resistor RX1 and a second discharge resistor RX2 connected in series, a first X capacitor CX1, a varistor MOV1, a rectifier bridge BD1, a seventh high-voltage filter capacitor ER7, a first filter inductor L1, a fifth resistor R5, a second filter inductor L2, a third high-voltage filter capacitor ER3, a third high-voltage filter capacitor E3, a third resistor RR3, a seventh resistor RR7, a sixth high-voltage filter capacitor ER6, a second resistor RR2, a second capacitor CR2, and a second diode DR2. The circuit consists of six resistors (RR6), transformer (T1), eleventh capacitor (CR11), twelfth resistor and capacitor (CR12), third diode (DR3), ninth resistor (R9), tenth resistor (R10), eleventh resistor (R11), twelfth resistor (RR12), fourteenth resistor (RR14), eighth capacitor (RR8), and AC / DC flyback power supply control chip (UR3). One end of fuse F1 is connected to the phase line of the 220V AC mains power supply. One end of the first discharge resistor (RX1), first X capacitor (CX1), and varistor (MOV1) is connected to the neutral line of the 220V AC mains power supply and the fourth terminal of rectifier bridge (BD1). The second discharge resistor R... X2, the other end of the first X capacitor CX1 and the varistor MOV1 are connected to the other end of the fuse F1 and the first terminal of the rectifier bridge BD1. The 220V AC mains power is converted into a high-voltage DC of over 300V by the safety function block composed of the fuse F1, the first discharge resistor RX1, the second discharge resistor RX2, the first X capacitor CX1, and the first varistor MOV1, and then by the rectifier and filter block composed of the rectifier bridge BD1, the seventh high-voltage filter capacitor ER7, the third high-voltage filter capacitor ER3, the first filter inductor L1, and the first filter inductor L2. Then it is converted into a high-voltage DC of over 300V by the seventh resistor RR7, the first high-voltage filter capacitor ER7, the third high-voltage filter capacitor ER3, the first filter inductor L1, and the first filter inductor L2. The three resistors RR3 and the sixth high-voltage filter capacitor ER6 supply power to the AC / DC flyback power supply control chip UR3, enabling it to start: by closing the high-voltage MOS inside the AC / DC flyback power supply control chip UR3 to store energy in the primary winding of the T1 transformer, and by closing the MOS to transfer the energy stored in the primary winding to the secondary winding through the magnetic core; the secondary winding is rectified by the first diode DR1 and filtered by the first electrolytic capacitor ER1, the eleventh capacitor CR11, and the twelfth capacitor CR12, and then combined with the primary-side feedback of the tenth sampling resistor RR10 and the eleventh resistor RR11, a stable DC 12V voltage is output.

[0015] In one possible implementation, the AC / DC flyback power supply control chip UR3 is model ME8327.

[0016] In one possible implementation, the DC-DC buck power supply module includes a buck chip UR4. The 12V DC power supply from the flyback switching power supply module is output as 5V after passing through the buck chip UR4. The feedback is provided by a feedback resistor composed of resistors RR44 and RR45 to stabilize the output at 5V, which is then used to power the LDO module and the speaker driving amplifier.

[0017] In one possible implementation, the step-down chip UR4 is model SY8120.

[0018] In one possible implementation, the LDO module includes a fifth capacitor C5, a sixth capacitor C6, a sixty-third capacitor C63, a sixty-fourth capacitor CP 64, and a chip U1. The DC power generated from the 5V DC-DC step-down power supply module is output as 3.3V after passing through the LDO module, which powers the voice chip and the WiFi main control module. The fifth capacitor C5 and the sixth capacitor C6 at the input end are used for energy storage and decoupling to stabilize the 5V input voltage of the LDO. The fifth capacitor C5 and the sixth capacitor C6 at the output end are used to stabilize the 3.3V output of the LDO.

[0019] In one possible implementation, the electromagnetic drive module includes a 42nd resistor R42, a 43rd resistor R43, a transistor Q3, a 39th resistor R39, a 40th resistor R40, a MOSFET Q6, a 4th diode D4, a 15th resistor R15, and a 1st LED indicator LED1. The electromagnetic drive module is controlled by the WiFi main control module. By turning the power supply of the magnetic lock on or off, it controls the opening and closing of the door. Specifically: when RELAY_CTR1 is low, transistor Q3 is off, the gate of MOSFET Q6 is high, and Q6 is also off, the positive terminal RELAY_+ of the magnetic lock is zero volts, and the magnetic lock loses magnetism; when RELAY_CTR1 is high, transistor Q3 is on, the gate of MOSFET Q6 becomes low, the GS voltage is -5V, MOSFET Q6 is on, the positive terminal RELAY_+ of the magnetic lock becomes 12V, the magnetic lock is magnetized, and the door magnetic status indicator LED1 is lit.

[0020] In one possible implementation, the door status detection module includes a reflective photoelectric switch U3. When the door is closed, the photoelectric signal from the emitter of the reflective photoelectric switch U3 is reflected by the door and transmitted to the receiver. The signal SW3 output by the door status detection module to the WiFi master control module changes from high level to low level. When the door is open, the receiver of the reflective photoelectric switch cannot receive the photoelectric signal from the emitter, and the output signal SW3 remains at a high level.

[0021] In one possible implementation, the reflective photoelectric switch U3 is model ITR9909.

[0022] In one possible implementation, the WiFi master control module is an ESP32-WROVER-E finished module with a built-in antenna.

[0023] The present invention has the following beneficial effects: it provides a WiFi-connected smart door magnetic controller with door status detection and voice prompt function, which is used to provide voice reminders before and after closing the door and send the door status to the server, so as to solve the problem that when people leave and close the door casually, the door stops outside the magnetic attraction range, resulting in the door not being closed, but the person thinks that it has been closed and has left. Attached Figure Description

[0024] Figure 1 This is a schematic block diagram of an intelligent door magnetic controller according to an embodiment of the present utility model;

[0025] Figure 2 This is a circuit diagram of an AC-DC isolated flyback switching power supply module according to one embodiment of the present invention;

[0026] Figure 3 This is a circuit diagram of a DC-DC step-down power supply module in one embodiment of the present invention;

[0027] Figure 4 This is a circuit diagram of the LDO module in one embodiment of the present invention;

[0028] Figure 5 This is a circuit diagram of the electromagnetic drive module in one embodiment of the present invention;

[0029] Figure 6 This is a circuit diagram of a gate state detection module in one embodiment of the present invention;

[0030] Figure 7 A circuit diagram of the voice module in one embodiment of this utility model;

[0031] Figure 8 A circuit diagram of the WiFi master control module in one embodiment of this utility model. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] See Figure 1The diagram shows a block diagram of an intelligent door magnetic controller according to an embodiment of the present invention. It includes an AC-DC isolated flyback switching power supply module, a DC-DC step-down power supply module, an LDO module, an electromagnetic drive module, a door status detection module, a voice module, and a WiFi main control module. The AC-DC isolated flyback switching power supply module is connected to a 220V AC input power supply and outputs 12V DC power to provide the power required for the normal operation of other modules. The DC-DC step-down power supply module is connected to the 12V DC power output from the flyback switching power supply module at its input terminal. After BUCK conversion, it outputs 5V power to the LDO module and the speaker driver amplifier. The LDO module is connected to the 5V DC power supply from the DC-DC step-down power supply module at its input terminal and outputs 3.3V power to the voice chip and the WiFi main control module. The electromagnetic drive module is connected to the WiFi main control module, and... The system controls the opening and closing of the magnetic lock by switching the power on or off. The door status detection module detects the photoelectric signal from the emitter of the reflective photoelectric switch when the door is closed, which is then reflected by the door to the receiver. The signal output from the door status detection module to the WiFi main control module changes from high to low. When the door is open, the receiver of the reflective photoelectric switch cannot receive the photoelectric signal from the emitter, and the output signal remains high. The voice module receives the voice packets to be played from the WiFi main control module via the IIS voice bus. The audio codec chip performs signal processing, including decoding and digital-to-analog conversion, and drives the speaker to play the desired sound through a power amplifier. The WiFi main control module, as the core of the entire controller, collects the status of the door switch and photoelectric switch in real time. It also acts as a network module, interacting with the server via WiFi. Based on the received signals, it controls the output of the electromagnetic drive module and the voice module.

[0034] Further, see Figure 2The AC-DC isolated flyback switching power supply module includes a fuse F1, a first discharge resistor RX1 and a second discharge resistor RX2 connected in series, a first X capacitor CX1, a varistor MOV1, a rectifier bridge BD1, a seventh high-voltage filter capacitor ER7, a first filter inductor L1, a fifth resistor R5, a second filter inductor L2, a third high-voltage filter capacitor ER3, a third high-voltage filter capacitor E3, a third resistor RR3, a seventh resistor RR7, a sixth high-voltage filter capacitor ER6, a second resistor RR2, a second capacitor CR2, a second diode DR2, a sixth resistor RR6, a transformer T1, an eleventh capacitor CR11, a twelfth resistor and capacitor CR12, a third diode DR3, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor RR12, a fourteenth resistor RR14, an eighth capacitor RR8, and an AC / DC flyback power supply control chip UR3, the model of which is ME8327. One end of fuse F1 is connected to the phase line of the 220V AC mains power. One end of the first discharge resistor RX1, the first X capacitor CX1, and the varistor MOV1 are connected to the neutral line of the 220V AC mains power and the fourth terminal of the rectifier bridge BD1. The other end of the second discharge resistor RX2, the first X capacitor CX1, and the varistor MOV1 are connected to the other end of fuse F1 and the first terminal of rectifier bridge BD1. The 220V AC mains power passes through the safety function block composed of fuse F1, first discharge resistor RX1, second discharge resistor RX2, first X capacitor CX1, and first varistor MOV1, and then through the rectifier bridge BD1, the seventh high-voltage filter capacitor ER7, the third high-voltage filter capacitor ER3, and the first filter inductor L1. The rectifier and filter, consisting of the first filter inductor L2, converts the voltage to a high-voltage DC of over 300V. This DC voltage is then supplied to the AC / DC flyback power supply control chip UR3 via the seventh resistor RR7, the third resistor RR3, and the sixth high-voltage filter capacitor ER6. This initiates the process: the high-voltage MOS inside the AC / DC flyback power supply control chip UR3 stores energy in the primary winding of transformer T1; when the MOS is turned off, the stored energy is transferred to the secondary winding via the magnetic core. The secondary winding is rectified by the first diode DR1 and filtered by the first electrolytic capacitor ER1, the eleventh capacitor CR11, and the twelfth capacitor CR12. Combined with primary-side feedback including the tenth sampling resistor RR10 and the eleventh resistor RR11, a stable 12V DC voltage is output. 220V AC power is extracted from the grid, rectified, inverted, and then rectified again to produce a safe, clean, and stable 12V DC power, providing the energy required for the normal operation of other modules. This module has a wide voltage input range, and fluctuations in the grid voltage have minimal impact on its performance parameters. Simultaneously, the module achieves electrical isolation from the grid through a transformer, eliminating the risk of electric shock at the load output.Compared to linear power supplies, this module has higher output efficiency, which can reduce input power consumption and save energy. At the same time, reduced losses mean less heat generation, thus improving the product's lifespan and stability.

[0035] In a specific application example, see Figure 3 The DC-DC step-down power supply module includes a step-down chip UR4, model number SY8120. The 12V DC power supply from the flyback switching power supply module is passed through the step-down chip UR4 to output 5V. Feedback is provided by a feedback resistor consisting of resistors RR44 (44) and RR45 (45) to stabilize the output at 5V, supplying power to the LDO module and the speaker driver amplifier.

[0036] In a specific application example, see Figure 4 The LDO module includes capacitor C5 (fifth capacitor), C6 (sixth capacitor), C63 (sixty-third capacitor), CP64 (sixty-fourth capacitor), and chip U1. The DC power generated from the 5V DC-DC step-down power supply module is output as 3.3V after passing through the LDO module, which powers the voice chip and the WiFi main control module. The fifth capacitor C5 and the sixth capacitor C6 at the input end are used for energy storage and decoupling to stabilize the 5V input voltage of the LDO; the fifth capacitor C5 and the sixth capacitor C6 at the output end are used to stabilize the 3.3V output of the LDO.

[0037] In a specific application example, see Figure 5 The electromagnetic drive module includes resistors R42 (42nd), R43 (43rd), transistor Q3, R39 (39th), R40 (40th), MOSFET Q6, diode D4 (4th), resistor R15 (15th), and LED indicator LED1. The electromagnetic drive module is controlled by the WiFi main control module. By switching the power supply to the magnetic lock on or off, it controls the opening and closing of the door. Specifically: when RELAY_CTR1 is low, transistor Q3 is off, the gate of MOSFET Q6 is high, and Q6 is also off, so the positive terminal RELAY_+ of the magnetic lock is zero volts, and the magnetic lock loses its magnetism; when RELAY_CTR1 is high, transistor Q3 is on, the gate of MOSFET Q6 becomes low, the gate-switching voltage is -5V, MOSFET Q6 is on, the positive terminal RELAY_+ of the magnetic lock becomes 12V, the magnetic lock is magnetized, and the door magnetic status indicator LED1 is lit.

[0038] In a specific application example, see Figure 6The door status detection module includes a reflective photoelectric switch U3, model ITR9909. When the door is closed, the photoelectric signal from the emitter of the reflective photoelectric switch U3 is reflected by the door and transmitted to the receiver. The signal SW3 output by the door status detection module to the WiFi main control module changes from high level to low level. When the door is open, the receiver of the reflective photoelectric switch cannot receive the photoelectric signal from the emitter, and the output signal SW3 remains high.

[0039] In a specific application example, see Figure 7 The voice module includes a voice decoding chip ES8311, a power amplifier chip NS4150, and peripheral circuitry. It receives voice packets to be played from the WiFi master control module via the IIS voice bus (LRCK, SCLK, ASDOUT, DSDIN). The voice decoding chip in the module performs decoding, digital-to-analog conversion, and other signal processing, and drives the speaker to play the required sound through the power amplifier (NS4150).

[0040] In a specific application example, the WiFi main control module uses the ESP32-WROVER-E, a pre-built module with a built-in antenna. As the core of the entire controller, it collects the real-time status of the door switches and photoelectric switches. Simultaneously, as a networking module, it interacts with the server via WiFi. Based on the various signals received, it performs internal calculations and then controls the output of the electromagnetic drive module and the voice module. The module uses Espressif Systems' ESP32-WROVER-E, a finished module with its own antenna, along with an RC delay reset circuit consisting of resistor R13 and capacitor C9, to meet the power-on sequence for module startup. LED2, driven by the module pin LED_RUN, displays the device's operating status (flashing indicates normal operation). Button SW3 is used to configure network connection to the server. Pin SW2 is used to acquire the status of the door control self-resetting switch. When the self-resetting switch is pressed, SW2 goes low, the magnetic lock control signal RELAY_CTR1 changes from high to low, the magnetic lock demagnetizes, the door opens, and the photoelectric module output signal (SW3) transitions from low to high. The module communicates with the voice module (ES8311) via IIC (IO15, IO21) and IIS (LRCK, SCLK, ASDOUT, DSDIN) to produce the required sound. Simultaneously, it interacts with the server via Wi-Fi (voice packet updates, door opening / closing status, etc.).

[0041] It should be understood that the exemplary embodiments described herein are illustrative and not restrictive. Although one or more embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art will understand that various changes in form and detail may be made without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. An intelligent door magnet controller, characterized in that, This includes an AC-DC isolated flyback switching power supply module, a DC-DC buck power supply module, an LDO module, an electromagnetic drive module, a door status detection module, a voice module, and a WiFi main control module. The AC-DC isolated flyback switching power supply module is used to connect to a 220V AC input power supply and output 12V DC power to provide the power required for the normal operation of other modules. The DC-DC step-down power supply module is connected to the 12V DC power output from the flyback switching power supply module at its input terminal. After being converted by BUCK, it outputs 5V power, which is then supplied to the LDO module and the speaker driver amplifier. The LDO module is connected to a 5V DC power supply from a DC-DC step-down power supply module and outputs a 3.3V power supply, which is then supplied to the voice chip and the WiFi main control module. The electromagnetic drive module is connected to the WiFi main control module and controls the opening and closing of the door by turning the power of the magnetic lock on or off. When the door is closed, the photoelectric signal from the emitter of the reflective photoelectric switch is reflected by the door and transmitted to the receiver. The signal output by the door status detection module to the WiFi main control module changes from high level to low level. When the door is open, the receiver of the reflective photoelectric switch cannot receive the photoelectric signal from the emitter, and the output signal remains high. The voice module receives the voice packets to be played from the WiFi master control module through the IIS voice bus, the audio codec chip performs signal processing including decoding and digital-to-analog conversion, and drives the speaker to play the required sound through the power amplifier; The WiFi main control module, as the core of the entire controller, collects the status of the door control switch and photoelectric switch in real time. At the same time, as a network module, it interacts with the server via WiFi and controls the output of the electromagnetic drive module and the voice module based on the obtained signals.

2. The intelligent door magnet controller of claim 1, wherein, The AC-DC isolated flyback switching power supply module includes a fuse F1, a first discharge resistor RX1 and a second discharge resistor RX2 connected in series, a first X capacitor CX1, a varistor MOV1, a rectifier bridge BD1, a seventh high-voltage filter capacitor ER7, a first filter inductor L1, a fifth resistor R5, a second filter inductor L2, a third high-voltage filter capacitor ER3, a third high-voltage filter capacitor E3, a third resistor RR3, a seventh resistor RR7, a sixth high-voltage filter capacitor ER6, a second resistor RR2, a second capacitor CR2, a second diode DR2, a sixth resistor RR6, and a transformer. The components include T1, eleventh capacitor CR11, twelfth resistor and capacitor CR12, third diode DR3, ninth resistor R9, tenth resistor R10, eleventh resistor R11, twelfth resistor RR12, fourteenth resistor RR14, eighth capacitor RR8, and AC / DC flyback power supply control chip UR3. One end of fuse F1 is connected to the phase line of the 220V AC mains. One end of the first discharge resistor RX1, the first X capacitor CX1, and the varistor MOV1 are connected to the neutral line of the 220V AC mains and the fourth terminal of the rectifier bridge BD1. The second discharge resistor RX2, the first X capacitor CX1, and the first X capacitor CX1 are connected to the neutral line of the 220V AC mains and the fourth terminal of the rectifier bridge BD1. The other ends of capacitor CX1 and varistor MOV1 are connected to the other end of fuse F1 and the first terminal of rectifier bridge BD1. The 220V AC mains power is converted to a high-voltage DC of over 300V by a safety function block consisting of fuse F1, first discharge resistor RX1, second discharge resistor RX2, first capacitor CX1, and first varistor MOV1. Then, it is rectified and filtered by a rectifier bridge BD1, seventh high-voltage filter capacitor ER7, third high-voltage filter capacitor ER3, first filter inductor L1, and first filter inductor L2. Finally, it is converted to a high-voltage DC of over 300V by a resistor RR7 and a third resistor RR7. RR3 and the sixth high-voltage filter capacitor ER6 supply power to the AC / DC flyback power supply control chip UR3, enabling it to start: by closing the high-voltage MOS inside the AC / DC flyback power supply control chip UR3 to store energy in the primary winding of transformer T1, and by closing the MOS to transfer the energy stored in the primary winding to the secondary winding through the magnetic core; the secondary winding is rectified by the first diode DR1 and filtered by the first electrolytic capacitor ER1, the eleventh capacitor CR11, and the twelfth capacitor CR12, and then combined with the primary-side feedback of RR11 including the tenth sampling resistor RR10 and the eleventh resistor, to output a stable DC 12V voltage.

3. The intelligent door magnet controller of claim 2, wherein, The AC / DC flyback power supply control chip UR3 is model ME8327.

4. The intelligent door magnet controller of claim 1, wherein, The DC-DC step-down power supply module includes a step-down chip UR4. The 12V DC power supply from the flyback switching power supply module is output as 5V after passing through the step-down chip UR4. The feedback resistor, composed of the forty-fourth resistor RR44 and the forty-fifth resistor RR45, provides feedback to stabilize the output at 5V, which is then used to power the LDO module and the speaker driver amplifier.

5. The intelligent door magnet controller of claim 4, wherein, The step-down chip UR4 is model number SY8120.

6. The intelligent door magnet controller of claim 1, wherein, The LDO module includes a fifth capacitor C5, a sixth capacitor C6, a sixty-third capacitor C63, a sixty-fourth capacitor CP64, and a chip U1. The DC power generated from the 5V DC-DC step-down power supply module is output as 3.3V after passing through the LDO module, which powers the voice chip and the WiFi main control module. The fifth capacitor C5 and the sixth capacitor C6 at the input end are used for energy storage and decoupling to stabilize the 5V input voltage of the LDO. The fifth capacitor C5 and the sixth capacitor C6 at the output end are used to stabilize the 3.3V output of the LDO.

7. The intelligent door magnet controller of claim 6, wherein, The electromagnetic drive module includes a 42nd resistor R42, a 43rd resistor R43, a transistor Q3, a 39th resistor R39, a 40th resistor R40, a MOSFET Q6, a 4th diode D4, a 15th resistor R15, and a 1st LED indicator LED1. The electromagnetic drive module is controlled by the WiFi main control module. By switching the power supply to the magnetic lock on or off, it controls the opening and closing of the door. Specifically: when RELAY_CTR1 is low, transistor Q3 is off, the gate of MOSFET Q6 is high, and Q6 is also off, so the positive terminal RELAY_+ of the magnetic lock is zero volts, and the magnetic lock loses its magnetism; when RELAY_CTR1 is high, transistor Q3 is on, the gate of MOSFET Q6 becomes low, the GS voltage is -5V, MOSFET Q6 is on, the positive terminal RELAY_+ of the magnetic lock becomes 12V, the magnetic lock is magnetized, and the door magnetic status indicator light illuminates simultaneously.

8. The intelligent door magnet controller of claim 1, wherein, The door status detection module includes a reflective photoelectric switch U3. When the door is closed, the photoelectric signal from the emitter of the reflective photoelectric switch U3 is reflected by the door and transmitted to the receiver. The signal SW3 output by the door status detection module to the WiFi main control module changes from high level to low level. When the door is open, the receiver of the reflective photoelectric switch cannot receive the photoelectric signal from the emitter, and the output signal SW3 remains at a high level.

9. The intelligent door magnetic controller as described in claim 8, characterized in that, The reflective photoelectric switch U3 is model ITR9909.

10. The intelligent door magnetic controller as described in claim 1, characterized in that, The WiFi main control module is an ESP32-WROVER-E finished module with a built-in antenna.

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