Roller shutter garage door controller capable of automatically rebounding when encountering obstacles
By designing a circuit structure including thyristor, triode and chip in the rolling gate garage door, and using software algorithms to judge the motor speed, the function of automatic rebound of the rolling gate when encountering obstacles is solved, the problem of traditional rolling gate lacking automatic rebound function is improved, and the safety is improved and costs are reduced.
Patent Information
- Application Number
- CN202421863531.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-02
AI Technical Summary
Traditional rolling garage doors lack automatic rebound function when encountering obstacles during the fall, which may lead to personal injury or vehicle damage.
A circuit structure including thyristor, triode and chip is designed. The motor speed is recorded in segments during the rolling gate drop by software algorithm, and the speed ratio is compared to determine whether there is an obstacle, and it will rebound automatically.
The function of automatic rebound of the rolling gate when encountering obstacles is realized, which improves safety and avoids personal and vehicle damage. At the same time, the circuit structure is simple and the cost is not high.
Smart Images
Figure CN222879617U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rolling shutter doors, in particular to a rolling shutter garage door controller which can automatically rebound when encountering obstacles. Background Art
[0002] Traditional rolling shutter garage doors use AC motors. When the garage door is falling, if there are vehicles or people entering or exiting, the rolling shutter door controller does not have the function of automatically rebounding when encountering obstacles, which may cause personal injury or damage to the vehicle. Utility Model Content
[0003] In order to make up for the deficiencies of the prior art, the embodiments of the present application provide a rolling shutter garage door controller that automatically rebounds when encountering an obstacle, thereby solving the problems mentioned in the prior art.
[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:
[0005] A rolling shutter garage door controller that automatically rebounds when encountering obstacles, comprising a bidirectional thyristor TR1, a bidirectional thyristor TR2, a transistor Q1, a transistor Q2, a chip U5 and a chip U8, one end of the bidirectional thyristor TR1 is connected to a resistor R200, a resistor R201 and a capacitor C121, the other end of the resistor R200 is connected to the capacitor C200, the other end of the resistor R201 is connected to the control electrode of the bidirectional thyristor TR1 and the pin 6 of the chip U8, the other end of the capacitor C121 is connected to a resistor R46 and a resistor R47, the other end of the capacitor C200 is connected to the other end of the resistor R46, the other end of the bidirectional thyristor TR1 and an interface CN7, the other end of the resistor R47 is connected to the pin 4 of the chip U8, the pin 1 of the chip U8 is connected to the resistor R48, the other end of the resistor R48 is connected to a 3.3V voltage, the pin 2 of the chip U8 is connected to the collector of the transistor Q1, the base of the transistor Q1 is connected to the resistor R49 and the resistor R50, the other end of the resistor R49 is connected to the transistor The emitter of Q1 and the ground terminal, the other end of resistor R50 is connected to signal RELAY2, one end of bidirectional thyristor TR2 is connected to resistor R202, resistor R203 and capacitor C202, the other end of resistor R202 is connected to capacitor C201, the other end of resistor R203 is connected to the control electrode of bidirectional thyristor TR2 and pin 6 of chip U5, the other end of capacitor C202 is connected to resistor R51 and resistor R52, the other end of capacitor C201 is connected to the other end of resistor R51, the other end of bidirectional thyristor TR2 and interface CN7, the other end of resistor R52 is connected to pin 4 of chip U5, pin 1 of chip U5 is connected to resistor R53, the other end of resistor R53 is connected to 3.3V voltage, pin 2 of chip U5 is connected to the collector of transistor Q2, the base of transistor Q2 is connected to resistor R55 and resistor R54, the other end of resistor R54 is connected to the emitter of transistor Q2 and the ground terminal, and the other end of resistor R55 is connected to signal RELAY3.
[0006] As a further technical solution of the utility model: the transistor Q1 is an NPN transistor.
[0007] As a further technical solution of the utility model: the transistor Q2 is an NPN transistor.
[0008] As a further technical solution of the present invention: the chip U5 is a thyristor isolation driver chip.
[0009] As a further technical solution of the utility model: the chip U8 is a thyristor isolation driver chip.
[0010] As a further technical solution of the utility model: it also includes a switch type Hall device IC5, which is installed inside the motor and outputs the Hall signal to the MCU on the control board through CN12.
[0011] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: the circuit structure is simple, the number of additional circuits is small, the impact on the cost is not significant, and the automatic rebound function of the rolling shutter door when encountering an obstacle can be accurately realized through software algorithms. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 The utility model provides a schematic diagram of a rolling shutter garage door controller that automatically rebounds when encountering an obstacle. DETAILED DESCRIPTION
[0013] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0014] Reference Figure 1A rolling shutter garage door controller that automatically rebounds when encountering an obstacle, comprising a bidirectional thyristor TR1, a bidirectional thyristor TR2, a transistor Q1, a transistor Q2, a chip U5 and a chip U8, one end of the bidirectional thyristor TR1 is connected to a resistor R200, a resistor R201 and a capacitor C121, the other end of the resistor R200 is connected to the capacitor C200, the other end of the resistor R201 is connected to the control electrode of the bidirectional thyristor TR1 and a pin 6 of the chip U8, the other end of the capacitor C121 is connected to a resistor R46 and a resistor R47, the other end of the capacitor C200 is connected to the other end of the resistor R46, the other end of the bidirectional thyristor TR1 and an interface CN7, the other end of the resistor R47 is connected to pin 4 of the chip U8, the pin 1 of the chip U8 is connected to a resistor R48, the other end of the resistor R48 is connected to a 3.3V voltage, the pin 2 of the chip U8 is connected to the collector of the transistor Q1, the base of the transistor Q1 is connected to a resistor R49 and a resistor R50, the other end of the resistor R49 is connected to the transistor The emitter of transistor Q1 and the ground terminal, the other end of resistor R50 is connected to signal RELAY2, one end of bidirectional thyristor TR2 is connected to resistor R202, resistor R203 and capacitor C202, the other end of resistor R202 is connected to capacitor C201, the other end of resistor R203 is connected to the control electrode of bidirectional thyristor TR2 and pin 6 of chip U5, the other end of capacitor C202 is connected to resistor R51 and resistor R52, the other end of capacitor C201 is connected to the other end of resistor R51, the other end of bidirectional thyristor TR2 and interface CN7, the other end of resistor R52 is connected to pin 4 of chip U5, pin 1 of chip U5 is connected to resistor R53, the other end of resistor R53 is connected to 3.3V voltage, pin 2 of chip U5 is connected to the collector of transistor Q2, the base of transistor Q2 is connected to resistor R55 and resistor R54, the other end of resistor R54 is connected to the emitter of transistor Q2 and the ground terminal, and the other end of resistor R55 is connected to signal RELAY3.
[0015] Here’s how it works:
[0016] CN7 is connected to the AC motor, and the thyristors TR1 and TR2 control the forward and reverse rotation of the motor. The resistor R200 and the capacitor C200 together form an RC absorption circuit. The resistor R46 and the capacitor C121 also form an absorption circuit. R201 is a thyristor G-level current limiting resistor. The resistors R46 and R47 are connected in series to prevent the thyristor from false triggering. U8 is a thyristor isolation driver chip. The resistor R48 is the primary current limiting resistor of U8. The transistor Q1 is the primary current amplifier of U8. R50 is the transistor B-level current limiting resistor. The resistor R49 is a resistor to prevent the transistor from false operation. The signal RELAY2 comes from the controlled MCU to control the conduction of the thyristor TR1, and then control the forward / reverse rotation of the motor. The forward and reverse circuits for controlling the motor are completely symmetrical, and the circuit structure and function of the other circuit are completely consistent, so they will not be analyzed in detail.
[0017] IC5 is a switch type Hall device, installed inside the motor, and outputs the Hall signal to the MCU on the control board through CN12.
[0018] The Hall IC5 is installed inside the AC motor. It detects the speed change of the AC motor through the change of the output signal and sends the speed change signal to the control MCU. The rolling shutter door runs at a constant speed during the descent process. When encountering an obstacle, the rolling shutter door will deform, and the deformation of the rolling shutter door will cause the speed of the AC motor to change. When the MCU detects the speed change of the AC motor, it will determine that an obstacle has been encountered, and it will immediately turn off the descent function and turn on the rise function to allow the rolling shutter door to automatically rise to avoid damage to the obstacle and realize the automatic rebound function when encountering an obstacle. However, in actual use, the assembly gap between the rolling shutter door and the guide rail, as well as the deformation of the rolling shutter door after long-term operation, will cause the speed of the AC motor to change during the descent process, resulting in the failure of the automatic rebound function when encountering an obstacle.
[0019] The present invention solves the above problem through software algorithm: in the process of the rolling shutter door from the top to the ground, the travel of the rolling shutter door is divided into countless small segments, and the small segments are as small as possible; in the process of descent, the speed of the AC motor of the previous segment is recorded each time, and the speed of the current segment is compared with the speed of the previous segment. When the speed ratio exceeds a certain value, it is considered that the rolling shutter door has encountered an obstacle. If it is to prevent misoperation, the speed of the following segments can also be compared with the speed of the previous segment. When the speed ratio of the following segments to the speed of the previous segment exceeds a certain value, it is considered that an obstacle has been encountered.
[0020] When the rolling shutter door is used for too long, it may cause serious deformation and may cause misoperation. You can cut off the power of the rolling shutter door, and then power it on again after it is completely discharged. Let the rolling shutter door drop from the top to touch the ground. During this process, the MCU learns and records the running speed of the motor in each small section as a benchmark to avoid misoperation.
[0021] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.
[0022] In addition, it should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment have also been appropriately combined to form other implementation modes that are easy for those skilled in the art to understand.
Claims
1. A rolling shutter garage door controller that automatically rebounds when encountering obstacles, comprising bidirectional thyristor TR1, bidirectional thyristor TR2, transistor Q1, transistor Q2, chip U5 and chip U8, characterized in that: One end of the bidirectional thyristor TR1 is connected to resistor R200, resistor R201 and capacitor C121, the other end of resistor R200 is connected to capacitor C200, the other end of resistor R201 is connected to the control electrode of bidirectional thyristor TR1 and pin 6 of chip U8, the other end of capacitor C121 is connected to resistor R46 and resistor R47, the other end of capacitor C200 is connected to the other end of resistor R46, the other end of bidirectional thyristor TR1 and interface CN7, the other end of resistor R47 is connected to pin 4 of chip U8, pin 1 of chip U8 is connected to resistor R48, the other end of resistor R48 is connected to 3.3V voltage, pin 2 of chip U8 is connected to the collector of transistor Q1, the base of transistor Q1 is connected to resistor R49 and resistor R50, the other end of resistor R49 is connected to the emitter of transistor Q1 and ground, and the other end of resistor R50 is connected to signal RELAY2 One end of the bidirectional thyristor TR2 is connected to resistor R202, resistor R203 and capacitor C202, the other end of resistor R202 is connected to capacitor C201, the other end of resistor R203 is connected to the control electrode of bidirectional thyristor TR2 and pin 6 of chip U5, the other end of capacitor C202 is connected to resistor R51 and resistor R52, the other end of capacitor C201 is connected to the other end of resistor R51, the other end of bidirectional thyristor TR2 and interface CN7, the other end of resistor R52 is connected to pin 4 of chip U5, pin 1 of chip U5 is connected to resistor R53, the other end of resistor R53 is connected to 3.3V voltage, pin 2 of chip U5 is connected to the collector of transistor Q2, the base of transistor Q2 is connected to resistor R55 and resistor R54, the other end of resistor R54 is connected to the emitter of transistor Q2 and ground, and the other end of resistor R55 is connected to signal RELAY3.
2. The rolling shutter garage door controller capable of automatically rebounding when encountering an obstacle according to claim 1, characterized in that: The transistor Q1 is an NPN transistor.
3. The rolling shutter garage door controller capable of automatically rebounding when encountering an obstacle according to claim 1, characterized in that: The transistor Q2 is an NPN transistor.
4. The rolling shutter garage door controller capable of automatically rebounding when encountering an obstacle according to claim 1, characterized in that: The chip U5 is a thyristor isolation driver chip.
5. The rolling shutter garage door controller capable of automatically rebounding when encountering an obstacle according to claim 1, characterized in that: The chip U8 is a thyristor isolation driver chip.
6. The rolling shutter garage door controller capable of automatically rebounding when encountering an obstacle according to claim 1, characterized in that: It also includes a switch type Hall device IC5, which is installed inside the motor and outputs the Hall signal to the MCU on the control board through CN12.