Infrared resistance wireless control circuit and electric roller shutter door

Abstract

The utility model provides a kind of infrared resistance wireless control circuit and electric roller shutter door, including power module, infrared induction module, processing module, host computer and wireless communication module, signal isolation module is connected between wireless communication module and processing module;The receiver of infrared induction module is connected with signal adjustment module between processing module;Signal isolation module includes optocoupler U1, signal adjustment module includes triode Q7 and potentiometer R8, the signal input end of processing module and power module are also connected with the potentiometer R18.Signal isolation module (including optocoupler U1), the electrical connection of processing module and wireless communication module can be effectively isolated, when abnormal situation such as one side appears open-circuit overload, the other side can be avoided to be involved damage;Signal adjustment module (including triode Q7, potentiometer R18 etc.), according to the actual distance of construction site infrared induction module receiving end and transmitting end, the intensity of received infrared signal can be flexibly adjusted.

Description

Technical Field

[0001] This utility model relates to the field of obstruction detection technology for roller shutter doors, and in particular to an infrared obstruction detection wireless control circuit and an electric roller shutter door. Background Technology

[0002] In existing roller shutter door obstruction detection technology systems, the signal transmission between the infrared sensing module and the main unit still generally uses the traditional wired connection mode. This wired transmission method has revealed many drawbacks in practical applications: First, from the perspective of material costs, it requires laying a large number of dedicated signal cables, power cables, and various auxiliary materials, increasing installation costs; second, when facing scenarios such as renovation of old buildings, installation of special structures, or temporary deployment, the wired connection method is often constrained by factors such as space limitations and aesthetic requirements, making installation work extremely difficult; in addition, the laying of a large number of cables can also lead to problems such as messy wiring and difficulty in diagnosing fault points, causing great inconvenience to daily maintenance and management. Therefore, although some roller shutters on the market transmit obstruction signals wirelessly, the signals generated by their obstruction sensing modules are directly transmitted to the wireless communication module without isolation. In the event of a circuit breaker or overload, both modules may be damaged. Furthermore, the trigger distance of existing infrared sensing modules is preset, but due to different construction site conditions, the distance between the receiver and transmitter of the infrared sensing module may differ from the preset distance, resulting in varying infrared signal strength. This could lead to premature or delayed triggering. If triggered too early, the roller shutter stops prematurely; if triggered too late, the roller shutter may collide with obstacles, resulting in a poor user experience. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide an infrared obstacle detection wireless control circuit and an electric roller shutter door.

[0004] This utility model is implemented using the following method: an infrared obstacle detection wireless control circuit includes a power supply module, an infrared sensing module, a processing module, a host computer, and a wireless communication module. The power supply module is electrically connected to the infrared sensing module, the processing module, and the wireless communication module. The infrared sensing module is communicatively connected to the processing module, the wireless communication module is connected to the processing module, and the wireless communication module is communicatively connected to the host computer. A signal isolation module is connected between the wireless communication module and the processing module. The signal isolation module includes an optocoupler U1, the input side of which is connected to the signal output terminal of the processing module, and the output side of which is connected to the wireless communication module. A signal adjustment module is connected between the receiver of the infrared sensing module and the processing module. The signal adjustment module includes a transistor Q7 and a potentiometer R8. The base of the transistor Q7 is connected to the receiver of the infrared sensing module, and the collector of the transistor Q7 is connected to the signal input terminal of the processing module. The potentiometer R8 is also connected between the signal input terminal of the processing module and the power supply module.

[0005] Preferably, the adjustment terminal of the potentiometer R18 is connected to the collector of the transistor Q7, one of the remaining fixed ports of the potentiometer R18 is connected to the signal input terminal of the processing module, the adjustment terminal is connected to one of the remaining ports of the potentiometer R18, and the other remaining port of the potentiometer R18 is connected to the output terminal of the power supply module.

[0006] Preferably, a resistor R15 is connected in parallel to the two fixed ports of the potentiometer R18; a resistor R14 is connected in series between the fixed port of the potentiometer R18 connected to the signal input terminal of the processing module and the first pin of the processing module.

[0007] Preferably, the emitter of the transistor Q7 is connected to ground via a series resistor R28 and a resistor R29, and a capacitor C11 is connected in parallel with the resistor R29.

[0008] Preferably, a resistor R24 ​​and a capacitor C9 are connected in series between the negative terminal of the receiver of the infrared sensing module and the base of the transistor Q7. The positive terminal of the receiver of the infrared sensing module is connected to the output terminal of the power supply module. The negative terminal of the receiver of the infrared sensing module is connected to the base of the transistor Q5. A resistor R20 is connected in series between the emitter of the transistor Q5 and the output terminal of the power supply module. A resistor R21 is connected in series between the output terminal of the power supply module and the base of the transistor Q7. The two ends of the capacitor C9 are grounded through resistors R26 and R27, respectively. A capacitor C8 is connected between the emitter of the transistor Q5 and one end of the capacitor C9 connected to the resistor R27. The collector of the transistor Q5 is connected to the sixth and seventh pins of the processing module and grounded.

[0009] Preferably, the third pin on the output side of the optocoupler U1 is connected to the eighth pin of the wireless communication module, the first pin on the input side of the optocoupler U1 is connected to the first pin of the processing module, and a resistor R7 is connected in series between the first pin of the optocoupler U1 and the first pin of the processing module; the ninth pin of the wireless communication module is wirelessly connected to the host computer.

[0010] Preferably, the fourth pin of the optocoupler U1 is connected to the output terminal of the power supply module, and a button SW1 is connected between the fourth pin of the optocoupler U1 and the third pin of the wireless communication module.

[0011] Preferably, LED2 is connected between the second pin of the optocoupler U1 and the third pin, and LED1 is connected between the fifth pin of the wireless communication module.

[0012] Preferably, the seventh pin of the wireless communication module is connected to a signal amplification circuit, which includes transistors Q2 and Q3. The collector of transistor Q3 is connected to the seventh pin of the wireless communication module, and the base of transistor Q3 is connected to the emitter of transistor Q2. The base of transistor Q2 is connected to one end of resistor R2 and grounded through capacitor C2. The other end of resistor R2 is connected to the seventh pin of the processing module. The collector of transistor Q2 is communicatively connected to the wireless remote control signal transmission port of the host computer.

[0013] An electric roller shutter door is provided with an infrared obstacle detection wireless control circuit as described in any of the above claims.

[0014] The beneficial effects of this utility model are as follows: This utility model provides an infrared obstacle detection wireless control circuit and an electric roller shutter door. Compared with the prior art, this utility model has at least the following technical effects: 1. The signal isolation module (including optocoupler U1) can effectively isolate the electrical connection between the processing module and the wireless communication module. When one side experiences an open circuit or overload, it can prevent the other side from being affected and damaged, thus improving the overall reliability and fault resistance of the circuit. The signal adjustment module (including transistor Q7, potentiometer R18, etc.) can flexibly adjust the received infrared signal strength according to the actual distance between the receiver and transmitter of the infrared sensing module at the construction site, avoiding premature or late triggering of the roller shutter door obstacle detection function due to signal strength issues, thereby improving the accuracy of the roller shutter door obstacle detection and the user experience. 2. Resistors R15 and R18 work together to limit the adjustment range of R18 (to avoid current runaway due to excessively small resistance); resistor R14 pulls the voltage of Q1 pin to VCC, ensuring the stability of the pin level of the processing module IC2 (to avoid floating misjudgment) and limiting the output current of IC2, protecting the downstream components. 3. The signal amplification circuit (including a first-stage signal amplification transistor Q2 and a second-stage signal amplification transistor Q3) can amplify the wireless remote control signal sent from the host computer to the wireless communication module. Attached Figure Description

[0015] Figure 1 This is a block diagram illustrating the control principle of an infrared obstacle detection wireless control circuit according to this utility model.

[0016] Figure 2 This is a circuit block diagram of the power supply module, infrared sensing module, processing module, and wireless communication module of an infrared obstacle detection wireless control circuit according to this utility model.

[0017] The following diagrams are labeled as follows: 1. Power supply module; 2. Infrared sensing module; 3. Processing module; 4. Host computer; 5. Wireless communication module; 6. Signal isolation module; 7. Signal adjustment module; 8. Signal amplification circuit. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] Please see Figures 1 to 2An infrared obstacle detection wireless control circuit includes a power module 1, an infrared sensing module 2, a processing module 3, a host computer 4, and a wireless communication module 5. The power module 1 is electrically connected to the infrared sensing module 2, the processing module 3, and the wireless communication module 5. The infrared sensing module 2 is communicatively connected to the processing module 3, the wireless communication module 5 is connected to the processing module 3, and the wireless communication module 5 is communicatively connected to the host computer 4. A signal isolation module 6 is connected between the wireless communication module 5 and the processing module 3. The signal isolation module 6 includes an optocoupler U. 1. The input side of the optocoupler U1 is connected to the signal output terminal of the processing module 3, and the output side of the optocoupler U1 is connected to the wireless communication module 5; a signal adjustment module 7 is connected between the receiver of the infrared sensing module 2 and the processing module 3. The signal adjustment module 7 includes a transistor Q7 and a potentiometer R8. The base of the transistor Q7 is connected to the receiver of the infrared sensing module 2, and the collector of the transistor Q7 is connected to the signal input terminal of the processing module 3. The potentiometer R8 is also connected between the signal input terminal of the processing module 3 and the power supply module 1. The signal isolation module 6 (including optocoupler U1) effectively isolates the electrical connection between the processing module 3 and the wireless communication module 5. When one side experiences an open circuit or overload, it prevents damage to the other side, improving the overall reliability and fault tolerance of the circuit. The signal adjustment module 7 (including transistor Q7, potentiometer R18, etc.) flexibly adjusts the received infrared signal strength based on the actual distance between the receiver and transmitter of the infrared sensing module 2 at the construction site. This prevents premature or delayed triggering of the roller shutter door's obstruction detection function due to signal strength issues, improving the accuracy of obstruction detection and user experience. Furthermore, the optocoupler U1 also performs voltage conversion, converting the 9V electrical signal to 5V, a voltage that the IC2 of the wireless communication module can withstand. The wireless communication module, power supply module, infrared sensing module, processing module, and host computer are all mature existing technologies and will not be described in detail or have specific protection requirements.

[0020] Please see Figures 1 to 2 Preferably, the adjusting terminal of potentiometer R18 is connected to the collector of transistor Q7, one of the remaining fixed ports of potentiometer R18 is connected to the signal input terminal of processing module 3, the adjusting terminal is connected to one of the remaining ports of potentiometer R18, and the other remaining port of potentiometer R18 is connected to the output terminal of power module 1. Clearly defining the connection method of potentiometer R18 allows for more precise adjustment of the collector signal of transistor Q7, thereby adjusting the signal input to processing module 3 and ensuring the effectiveness and operability of signal adjustment.

[0021] Please see Figures 1 to 2Preferably, a resistor R15 is connected in parallel to the two fixed ports of the potentiometer R18; a resistor R14 is connected in series between the fixed port of the potentiometer R18 connected to the signal input terminal of the processing module 3 and the first pin of the processing module 3. Resistor R15 works in conjunction with potentiometer R18 to limit the adjustment range of R18 (to prevent excessively low resistance from causing current runaway); resistor R14 pulls the voltage of pin Q1 to VCC, ensuring stable pin levels of the processing module 3 IC2 (to prevent false positives due to floating) and limiting the output current of IC2 to protect downstream components.

[0022] Please see Figures 1 to 2 Preferably, the emitter of transistor Q7 is connected in series with resistors R28 and R29 and grounded, and resistor R29 is connected in parallel with capacitor C11. Resistors R28 and R29 can limit the emitter current of transistor Q7, ensuring the safe operation of the transistor, while capacitor C11 can filter the emitter signal, removing high-frequency noise and other interference, making the operation of transistor Q7 more stable and the output signal purer.

[0023] Please see Figures 1 to 2 Preferably, a resistor R24 ​​and a capacitor C9 are connected in series between the negative terminal of the receiver of the infrared sensing module 2 and the base of the transistor Q7. The positive terminal of the receiver of the infrared sensing module 2 is connected to the output terminal of the power supply module 1, and the negative terminal of the receiver of the infrared sensing module 2 is connected to the base of the transistor Q5. A resistor R20 is connected in series between the emitter of the transistor Q5 and the output terminal of the power supply module 1. A resistor R21 is connected in series between the output terminal of the power supply module 1 and the base of the transistor Q7. The two ends of the capacitor C9 are grounded through resistors R26 and R27, respectively. A capacitor C8 is connected between the emitter of the transistor Q5 and one end of the capacitor C9 connected to the resistor R27. The collector of the transistor Q5 is connected to the sixth and seventh pins of the processing module 3 and grounded. A complete signal receiving and preprocessing circuit for the infrared sensing module 2 receiver is constructed. Through the cooperation of multiple resistors, capacitors and transistors Q5 and Q7, the received signal is filtered, divided, amplified and processed to provide a high-quality pre-processing signal for the subsequent processing module 3 to accurately process the signal.

[0024] Please see Figures 1 to 2Preferably, the third pin of the output side of the optocoupler U1 is connected to the eighth pin of the wireless communication module 5, and the first pin of the input side of the optocoupler U1 is connected to the first pin of the processing module 3. A resistor R7 is connected in series between the first pin of the optocoupler U1 and the first pin of the processing module 3. The ninth pin of the wireless communication module 5 is wirelessly connected to the host computer 4. The resistor R7 can limit the current of the input side of the optocoupler U1 to ensure the safety of the optocoupler and the processing module 3. The ninth pin of the wireless communication module 5 is wirelessly connected to the host computer 4 to realize the wireless control function. The wireless connection between the wireless communication module 5 and the host computer 4 can be customized by selecting different wireless communication protocol modules, such as Bluetooth modules or ZigBee modules, to expand the communication distance and functions according to the scenario requirements.

[0025] Please see Figures 1 to 2 Preferably, the fourth pin of the optocoupler U1 is connected to the output terminal of the power module 1, and a button SW1 is connected between the fourth pin of the optocoupler U1 and the third pin of the wireless communication module 5. The remote control of the host computer 4 can be paired with the remote control signal through the SW1 button on the signal isolation module 6. After pressing SW1, the pairing mode is entered, and the remote control stop button on the host computer 4 can be pressed at this time.

[0026] Please see Figures 1 to 2 Preferably, an LED2 is connected between the second pin of the optocoupler U1 and the third pin, and an LED1 is connected between the fifth pin of the wireless communication module 5. The LED2 is an indicator light for infrared signals, and the LED1 is an indicator light for remote control signals.

[0027] Please see Figures 1 to 2 Preferably, pin 7 of the wireless communication module 5 is connected to a signal amplification circuit 8. The signal amplification circuit 8 includes transistors Q2 and Q3. The collector of transistor Q3 is connected to pin 7 of the wireless communication module 5, and the base of transistor Q3 is connected to the emitter of transistor Q2. The base of transistor Q2 is connected to one end of resistor R2 and grounded via capacitor C2. The other end of resistor R2 is connected to pin 7 of the processing module. The collector of transistor Q2 is communicatively connected to the wireless remote control signal transmission port of the host computer. The signal amplification circuit 8 amplifies the wireless remote control signal sent from the host computer 4 to the wireless communication module 5. The length of the wire connecting transistor Q3 and the wireless communication module generates inductance, which determines the signal reception strength. An RC absorber composed of R2 and C2 suppresses high-frequency signals and external signal interference, making the received remote control signal more stable.

[0028] An electric roller shutter door is provided with an infrared obstacle detection wireless control circuit as described in any of the above claims.

[0029] The working principle of this utility model is as follows:

[0030] The 12V DC voltage of power module 1 is input from the BD1 rectifier bridge. After rectification and filtering, a stable 12V voltage is output. Through voltage division, a 9V voltage is output, which is VCC in the figure; then, a 5V voltage is output through the Q1 Zener diode.

[0031] IC2 in processing module 3 sends an electrical signal to the F1 infrared emitting diode of infrared sensing module 2 via Q2, converting the electrical signal into an infrared signal. On the other end, the infrared receiving sensor S1 of infrared sensing module 2 converts the received infrared signal back into an electrical signal. After filtering and voltage division, the signal is amplified by Q7, and the signal magnitude is adjusted by potentiometer R18 to change the receiving distance. Finally, the signal is input to pin D1 (pin 5) of processing module 3. The signal is then output through pin Q1. The signal output from Q1 is converted from the 9V VCC signal to a 5V signal by optocoupler U1 in the isolation module and transmitted to pin S3 (pin 8) of wireless communication module IC1. IC1 internally encodes and converts the signal into a wireless signal, which is then transmitted to the host computer 4 via the TX port. Preferably, IC1 can be a CM928 microcontroller, and IC2 can be an MC14013BG.

[0032] Several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0033] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0034] Finally, the above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions that fall within the scope of the present utility model are protected by the present utility model.

[0035] It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of this utility model should also be considered within the scope of protection of this utility model.

Claims

1. An infrared obstacle detection wireless control circuit, comprising a power supply module, an infrared sensing module, a processing module, a host computer, and a wireless communication module, wherein the power supply module is electrically connected to the infrared sensing module, the processing module, and the wireless communication module; the infrared sensing module is communicatively connected to the processing module; the wireless communication module is connected to the processing module; and the wireless communication module is communicatively connected to the host computer, characterized in that: A signal isolation module is connected between the wireless communication module and the processing module. The signal isolation module includes an optocoupler U1, the input side of which is connected to the signal output terminal of the processing module, and the output side of which is connected to the wireless communication module. A signal adjustment module is connected between the receiver of the infrared sensing module and the processing module. The signal adjustment module includes a transistor Q7 and a potentiometer R8. The base of the transistor Q7 is connected to the receiver of the infrared sensing module, and the collector of the transistor Q7 is connected to the signal input terminal of the processing module. The potentiometer R8 is also connected between the signal input terminal of the processing module and the power supply module.

2. The infrared obstacle detection wireless control circuit according to claim 1, characterized in that: The adjustment terminal of potentiometer R18 is connected to the collector of transistor Q7. One of the remaining fixed ports of potentiometer R18 is connected to the signal input terminal of the processing module. The adjustment terminal is connected to one of the remaining ports of potentiometer R18. The other remaining port of potentiometer R18 is connected to the output terminal of the power supply module.

3. The infrared obstacle detection wireless control circuit according to claim 2, characterized in that: The two fixed ports of the potentiometer R18 are connected in parallel with a resistor R15; the fixed port of the potentiometer R18 connected to the signal input terminal of the processing module is connected in series with the first pin of the processing module with a resistor R14.

4. The infrared obstacle detection wireless control circuit according to claim 1, characterized in that: The emitter of transistor Q7 is connected to ground via series resistors R28 and R29, and resistor R29 is connected in parallel with capacitor C11.

5. The infrared obstacle detection wireless control circuit according to claim 1, characterized in that: A resistor R24 ​​and a capacitor C9 are connected in series between the negative terminal of the receiver of the infrared sensing module and the base of the transistor Q7. The positive terminal of the receiver of the infrared sensing module is connected to the output terminal of the power supply module. The negative terminal of the receiver of the infrared sensing module is connected to the base of the transistor Q5. A resistor R20 is connected in series between the emitter of the transistor Q5 and the output terminal of the power supply module. A resistor R21 is connected in series between the output terminal of the power supply module and the base of the transistor Q7. The two ends of the capacitor C9 are grounded through resistors R26 and R27, respectively. A capacitor C8 is connected between the emitter of the transistor Q5 and one end of the capacitor C9 connected to the resistor R27. The collector of the transistor Q5 is connected to the sixth and seventh pins of the processing module and grounded.

6. The infrared obstacle detection wireless control circuit according to claim 1, characterized in that: The third pin on the output side of the optocoupler U1 is connected to the eighth pin of the wireless communication module, the first pin on the input side of the optocoupler U1 is connected to the first pin of the processing module, and a resistor R7 is connected in series between the first pin of the optocoupler U1 and the first pin of the processing module; the ninth pin of the wireless communication module is wirelessly connected to the host computer.

7. The infrared obstacle detection wireless control circuit according to claim 6, characterized in that: The fourth pin of the optocoupler U1 is connected to the output terminal of the power supply module, and a button SW1 is connected between the fourth pin of the optocoupler U1 and the third pin of the wireless communication module.

8. The infrared obstacle detection wireless control circuit according to claim 6, characterized in that: LED2 is connected between the second pin of the optocoupler U1 and the third pin, and LED1 is connected between the fifth pin of the wireless communication module.

9. The infrared obstacle detection wireless control circuit according to claim 1, characterized in that: The seventh pin of the wireless communication module is connected to a signal amplification circuit, which includes transistors Q2 and Q3. The collector of transistor Q3 is connected to the seventh pin of the wireless communication module, and the base of transistor Q3 is connected to the emitter of transistor Q2. The base of transistor Q2 is connected to one end of resistor R2 and grounded through capacitor C2. The other end of resistor R2 is connected to the seventh pin of the processing module. The collector of transistor Q2 is communicatively connected to the wireless remote control signal transmission port of the host computer.

10. An electric roller shutter door, characterized in that: An infrared obstacle detection wireless control circuit as described in any one of claims 1-9 is provided.

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