Electric rolling door safety device

Abstract

The present invention relates to a safety device for an electric rolling door, comprising a processor U1. Terminal 6 of the processor U1 is connected to a +3.3V power supply, terminal 8 of the processor U1 is grounded, and a capacitor C1 is connected between the two terminals. Terminal 12 of the processor U1 is connected in series with a resistor R5 and a diode D3 and then to ground. Terminal 13 of the processor U1 is connected in series with a resistor R4 and a diode D2 and then to ground. Terminals 14, 15, and 16 of the processor U1 are respectively connected to limit switches S1, S2, and S3 and then to ground. Terminals 3, 4, 9, and 10 of the processor U1 are connected to a network module. The present invention utilizes closed-loop control technology and intelligent algorithms to immediately stop the motor when door deformation or closing resistance exceeds a set value, and can alert the user through the device. Simultaneously, the user can remotely open and close the rolling door by sending a door opening and closing command.

Description

Technical Field

[0001] The invention relates to the technical field of rolling shutter doors, in particular to a safety device for electric rolling shutter doors. Background Art

[0002] Electric rolling shutters consist of multiple articulated door panels connected in series. Driven by an electric motor, the rolling shutter moves up and down along a fixed slideway, pivoting around a reel above the door. They are suitable for residential and public spaces such as commercial storefronts, garages, shopping malls, hospitals, factories, mines, and other locations. They offer convenient and quick opening in areas where a ground-level door is inconvenient. Examples include garage doors, fire-rated rolling shutters in shopping malls, and hangar doors. If the rolling shutter is deformed or obstructed from closing, the motor continues to operate, posing various safety risks. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: in order to solve a series of problems existing in the deformation of the rolling shutter door or the obstruction of the door closing, a safety protection device for an electric rolling shutter door is provided, which can control the motor to stop, thereby avoiding safety hazards.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: The present invention provides an electric rolling door safety device, comprising a processor U1, wherein terminal 6 of the processor U1 is connected to a +3.3V power supply, terminal 8 thereof is grounded, and a capacitor C1 is connected between the two terminals, terminal 12 of the processor U1 is connected in series with a resistor R5 and a diode D3 and then grounded, and terminal 13 thereof is connected in series with a resistor R4 and a diode D2 and then grounded, terminals 14, 15, and 16 of the processor U1 are respectively connected to travel switches S1, S2, and S3 and then grounded, and terminals 3, 4, 9, and 10 of the processor U1 are connected to a network module;

[0005] The network module includes a communication chip U7, a pin connector CN1, and a first conversion circuit and a second conversion circuit that are symmetrically arranged; the terminal 1 of the communication chip U7 is grounded, its terminal 8 is connected to a +3.3V power supply, its terminals 4 and 5 are connected to resistors R10 and R11 respectively and then connected to terminals 9 and 10 of the processor U1; the first conversion circuit includes a transistor Q1, the emitter of the transistor Q1 is grounded, a RELAY relay and a diode D4 are connected in parallel between its collector and the +12V power supply, its base is connected to a resistor R8 and then connected to terminal 3 of the photocoupler U3, and the terminal of the photocoupler U3 is connected to the ground. Terminals 1 and 4 are connected to a +3.3V power supply and a +12V power supply, respectively; terminal 2 of the photocoupler U3 is connected to resistor R6 and connected to terminal 4 of the processor U1; terminal 3 of the processor U1 is connected to the second conversion circuit; the RELAY relays in the first conversion circuit and the second conversion circuit are connected, and the two are connected to terminals 3 and 5 of the pin connector CN1, respectively; terminal 1 of the pin connector CN1 is connected to terminal 1 of the RELAY relay of the first conversion circuit through a fuse F1; terminals 2, 4, 7, and 8 of the pin connector CN1 are connected to an AC220V power supply.

[0006] Working Principle: The communication chip U7 transmits real-time status data of the rolling shutter door to the processor U1, using a photoelectric coupler to prevent interference from external signals. When the rolling shutter door is closed, if it is opened illegally, the communication chip U7 detects the signal and issues an alert to the user. During the rolling shutter door's descent or ascent, if the communication chip U7 detects that the operating speed exceeds or falls below the normal speed, it transmits the detected speed to the processor U1, which then issues an alert to the user and immediately stops the motor. Furthermore, the user can send a door opening and closing command via the network module to remotely open and close the rolling shutter door.

[0007] Furthermore, the processor U1 is connected to a speed detection module, which includes a Hall element U4 and an operational amplifier U5. Terminal 1 of the Hall element U4 and terminal 8 of the operational amplifier U5 are both connected to a +12V power supply, terminal 2 of the Hall element U4 and terminal 4 of the operational amplifier U5 are both grounded, terminal 3 of the Hall element U4 is connected to terminal 3 of the operational amplifier U5, terminal 2 of the operational amplifier U5 is connected to a sliding resistor VR1, and the sliding resistor VR1 is connected between the +12V power supply and ground, terminal 8 of the operational amplifier U5 is connected in series with resistor R7, light-emitting diode D4 and capacitor C3 and then grounded, terminal 1 of the operational amplifier U5 is connected to the common end of the light-emitting diode D4 and capacitor C3, and is connected to the processor U1.

[0008] The Hall effect element U4 detects the operating status of the reel and compares it with the normal operating speed using the operational amplifier U5 to determine if it is functioning properly. When the door is closed normally, the Hall effect element U4 detects a deviation from the normal speed and, depending on the magnitude of the deviation, first activates the processor U1 to issue an alarm and stop the motor. When the door is opened normally, the Hall effect element U4 detects a deviation from the normal speed and, depending on the magnitude of the deviation, first activates the processor U1 to issue an alarm and stop the motor.

[0009] Beneficial effects of the present invention: The present invention provides an electric rolling door safety device, which adopts closed-loop control technology and intelligent algorithms to achieve that when the door is deformed or the closing obstacle exceeds the set value, the motor stops working immediately and can alarm the user through the device; at the same time, the user can realize the remote opening and closing function of the rolling door by sending the door opening and closing command. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described below with reference to the accompanying drawings and examples.

[0011] Figure 1 is a circuit diagram of the present invention;

[0012] Figure 2 This is the circuit diagram of the network module;

[0013] Figure 3 This is the circuit diagram of the speed detection module. DETAILED DESCRIPTION

[0014] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0015] like Figure 1 and Figure 2 As shown, the present invention provides an electric rolling door safety device, including a processor U1, the processor U1 is STC8F2K08S2, terminal 6 of the STC8F2K08S2 is connected to a +3.3V power supply, its terminal 8 is grounded, and a capacitor C1 is connected between the two terminals, the terminal 12 of the STC8F2K08S2 is connected in series with a resistor R5 and a diode D3 and then grounded, the terminal 13 of the STC8F2K08S2 is connected in series with a resistor R4 and a diode D2 and then grounded, the terminals 14, 15 and 16 of the STC8F2K08S2 are respectively connected to limit switches S1, S2 and S3 and then grounded, and the terminals 3, 4, 9 and 10 of the STC8F2K08S2 are connected to a network module;

[0016] The network module includes a communication chip U7, a four-row and two-column pin connector CN1, and a symmetrically arranged first conversion circuit and a second conversion circuit; the communication chip U7 is ESP-01S, terminal 1 of the ESP-01S is grounded, its terminal 8 is connected to a +3.3V power supply, its terminals 4 and 5 are connected to resistors R10 and R11 respectively, and then connected to terminals 9 and 10 of the STC8F2K08S2; the first conversion circuit includes a transistor Q1, the emitter of the transistor Q1 is grounded, a RELAY relay and a diode D4 are connected in parallel between its collector and the +12V power supply, its base is connected to a resistor R8, and then connected to terminal 3 of the photocoupler U3, the Terminals 1 and 4 of the photoelectric coupler U3 are connected to the +3.3V power supply and the +12V power supply, respectively. Terminal 2 of the photoelectric coupler U3 is connected to the resistor R6 and connected to the terminal 4 of the STC8F2K08S2. Terminal 3 of the STC8F2K08S2 is connected to the second conversion circuit. The RELAY relays in the first conversion circuit and the second conversion circuit are connected, and the two are connected to terminals 3 and 5 of the pin connector CN1, respectively. Terminal 1 of the pin connector CN1 is connected to terminal 1 of the RELAY relay of the first conversion circuit through the fuse F1. Terminals 2, 4, 7, and 8 of the pin connector CN1 are connected to the AC220V power supply.

[0017] The ESP-01S transmits the acquired real-time status data of the rolling shutter door to the STC8F2K08S2, and uses a photoelectric coupler to avoid interference from external signals. When the rolling shutter door is closed, if the rolling shutter door is opened illegally, the ESP-01S detects the signal and warns the user. During the descent and ascent of the rolling shutter door, if the ESP-01S detects that the operating speed exceeds or falls below the normal speed, the detected operating speed can be transmitted to the STC8F2K08S2, which then warns the user and immediately stops the motor.

[0018] The user connects to the router and logs into the server through the network module, sharing data such as the real-time status and alarm information of the rolling shutter door with the server. By registering an account and logging into the server, the user can view the current status of the rolling shutter door and any alarm information in real time. At the same time, the rolling shutter door can be remotely opened and closed by sending a door opening and closing command.

[0019] like Figure 1 and Figure 3As shown, the STC8F2K08S2 is connected to a speed detection module, which includes a Hall element U4 and an operational amplifier U5 of model LM358. Terminal 1 of the Hall element U4 and terminal 8 of the operational amplifier U5 are both connected to a +12V power supply, terminal 2 of the Hall element U4 and terminal 4 of the operational amplifier U5 are both grounded, terminal 3 of the Hall element U4 is connected to terminal 3 of the operational amplifier U5, terminal 2 of the operational amplifier U5 is connected to a sliding resistor VR1, and the sliding resistor VR1 is connected between the +12V power supply and ground, terminal 8 of the operational amplifier U5 is connected in series with a resistor R7, a light-emitting diode D4 and a capacitor C3 and then grounded, terminal 1 of the operational amplifier U5 is connected to the common end of the light-emitting diode D4 and the capacitor C3, and is connected to the STC8F2K08S2.

[0020] The speed detection module, comprised of the Hall effect element U4, is mounted on the reel to monitor its operating status. The operational amplifier U5 compares this with the normal operating speed to determine if the reel is functioning properly. When the door is closed normally, the Hall effect element U4 detects a deviation from the normal speed and, depending on the magnitude of the deviation, activates the STC8F2K08S2 to generate an alarm and simultaneously stop the motor. When the door is opened normally, the Hall effect element U4 detects a deviation from the normal speed and, depending on the magnitude of the deviation, activates the STC8F2K08S2 to generate an alarm and simultaneously stop the motor.

[0021] The present invention provides an electric rolling door safety protection device, which adopts closed-loop control technology and intelligent algorithms to realize that when the door is deformed or the closing resistance exceeds the set value, the motor stops working immediately and the user is alerted through the device; at the same time, the user can realize the remote opening and closing function of the rolling door by sending the door opening and closing command.

[0022] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A safety device for an electric rolling door, characterized by: The processor U1 includes a model of STC8F2K08S2. Terminal 6 of the processor U1 is connected to a +3.3V power supply, terminal 8 is grounded, and a capacitor C1 is connected between the two terminals. Terminal 12 of the processor U1 is connected in series with a resistor R5 and a diode D3 and then to ground. Terminal 13 of the processor U1 is connected in series with a resistor R4 and a diode D2 and then to ground. Terminals 14, 15, and 16 of the processor U1 are respectively connected to limit switches S1, S2, and S3 and then to ground. Terminals 3, 4, 9, and 10 of the processor U1 are connected to a network module. The network module includes a communication chip U7, a pin connector CN1, and a symmetrically arranged first conversion circuit and a second conversion circuit; the terminal 1 of the communication chip U7 is grounded, its terminal 8 is connected to a +3.3V power supply, and its terminals 4 and 5 are connected to resistors R10 and R11 respectively and then connected to terminals 9 and 10 of the processor U1; the first conversion circuit includes a transistor Q1, the emitter of the transistor Q1 is grounded, a RELAY relay and a diode D4 are connected in parallel between its collector and the +12V power supply, its base is connected to resistor R8 and then connected to terminal 3 of the photocoupler U3, terminals 1 and 4 of the photocoupler U3 are respectively connected to the +3.3V power supply and the +12V power supply, terminal 2 of the photocoupler U3 is connected to resistor R6 and connected to terminal 4 of the processor U1, and terminal 3 of the processor U1 is connected to the second conversion circuit; the RELAY relays in the first conversion circuit and the second conversion circuit are connected, and the two are respectively connected to terminals 3 and 5 of the pin connector CN1, the pin Terminal 1 of connector CN1 is connected to terminal 1 of the RELAY relay of the first conversion circuit through fuse F1, and terminals 2, 4, 7, and 8 of the pin connector CN1 are connected to an AC220V power supply; the processor U1 is connected to a speed detection module, which includes a Hall element U4 and an operational amplifier U5, wherein terminal 1 of the Hall element U4 and terminal 8 of the operational amplifier U5 are both connected to a +12V power supply, terminal 2 of the Hall element U4 and terminal 4 of the operational amplifier U5 are both grounded, terminal 3 of the Hall element U4 is connected to terminal 3 of the operational amplifier U5, terminal 2 of the operational amplifier U5 is connected to a sliding rheostat VR1, which is connected between a +12V power supply and ground, terminal 8 of the operational amplifier U5 is connected in series with a resistor R7, a light-emitting diode D4, and a capacitor C3 and then grounded, terminal 1 of the operational amplifier U5 is connected to a common end of the light-emitting diode D4 and the capacitor C3, and is also connected to the processor U1; The Hall element U4 is used to detect the running status of the scroll, and the operational amplifier U5 is used to compare the normal working speed to know whether the operation is running well; when the door is closed normally, the Hall element U4 detects that the running speed deviates from the normal speed, and according to the size of the deviation value, the drive processor U1 alarms and stops the motor at the same time; when the door is opened normally, after detecting that the running speed deviates from the normal speed, the drive processor U1 alarms and stops the motor at the same time according to the size of the deviation value.

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