Dual-power-supply low-power-consumption memory curtain control system and curtain

Abstract

The invention discloses a dual-power-supply low-power-consumption memory curtain control system and a curtain. The control system comprises a built-in power supply module, a power supply module, a power failure detection module, an MCU module, a position sensing module and a motor driving module. The power supply module is used for switching and receiving power supply of the built-in power supply module or power supply voltage of a power supply, and outputting the power supply voltage in a stabilized manner; the power failure detection module is used for detecting whether the power supply is powered down, and when the power supply is powered down, the power failure detection module sends a power failure signal; when the MCU module receives the power-down signal, the MCU module switches the system into an ultra-low power consumption mode; the MCU module comprises an MCU chip U1 and a peripheral circuit thereof; the position sensing module is used for detecting and recording rotation information of the motor and sending the rotation information of the motor to the MCU chip U1; the MCU chip U1 calculates to obtain position information according to the rotation information of the motor, and then calculates and generates a control signal according to the position information; the motor driving module is used for receiving the control signal and driving the motor according to the control signal.

Description

Technical Field

[0001] The present invention relates to the technical field of electric curtain machines, and in particular to a dual-power supply low-power consumption memory curtain control system and a curtain. Background Art

[0002] As a part of the smart home system, electric curtains are popular among the public because of their convenience, intelligence and simplicity. Electric curtains control the curtain motor wirelessly and drive the pulley to move, thereby controlling the opening and closing of the curtains. During the operation of the curtain motor, it usually runs to the specified stroke position according to the stroke set by the user, so that the pulley drives the curtain to open and close to the corresponding position. However, when the electric curtain is turned on again after power failure, the electric curtain cannot determine the current position of the curtain. When the electric curtain is turned on again, the electric curtain will continue to run according to the preset formation, resulting in the risk of over-limit movement of the electric curtain.

[0003] Therefore, this type of curtain machine is often used in special scenarios, such as hotels, where it is often powered on and off repeatedly. When this happens, the curtain position needs to be re-calibrated, and the inspection usually uses the principle of setting the stroke when encountering resistance. However, this method will cause the curtain track to repeatedly encounter resistance, damage track accessories, such as belt breakage, gear component slippage, and electronic device overcurrent damage, which seriously affects the service life and reliability of the electric curtain. Summary of the invention

[0004] In view of the deficiencies of the prior art, a dual-power supply low-power consumption memory curtain control system machine curtain and curtain are provided.

[0005] To achieve the above object, the present invention provides a dual-power low-power memory curtain control system machine curtain, comprising

[0006] Built-in power module;

[0007] A power supply module, the input end of which is connected to the output end of the built-in power module and the power supply respectively; the power supply module is used to switch and receive the power supply voltage of the built-in power module or the power supply, and output the power supply voltage in a stable manner;

[0008] A power failure detection module, the power failure detection module is connected to the power supply module and the power supply respectively; the power failure detection module is used to detect whether the power supply is powered off, and when the power supply is powered off, the power failure detection module sends a power failure signal;

[0009] The MCU module includes an MCU chip U1 and its peripheral circuits; the MCU chip U1 is respectively connected to a power supply module and a power-off detection module; when the MCU chip U1 receives a power-off signal, the MCU chip U1 switches the system to an ultra-low power consumption mode;

[0010] Position sensor module, the position sensor module is connected to the MCU chip U1 and the power supply module respectively; the position sensor module is used to detect and record the rotation information of the motor, and send the motor rotation information to the MCU chip U1; the MCU chip U1 calculates the position information according to the motor rotation information, and then calculates and generates a control signal according to the position information; in the ultra-low power consumption mode, the built-in power supply module supplies power to the position sensor module and the MCU chip U1;

[0011] The motor drive module is connected to the MCU chip U1. The motor drive module receives the control signal and drives the motor according to the control signal.

[0012] According to one embodiment of the present invention, the power supply module includes a conversion circuit and a voltage stabilizing circuit, the input end of the conversion circuit is respectively connected to the output end of the built-in power supply module and the power supply, the output end of the conversion circuit is connected to the input end of the voltage stabilizing circuit, and the output end of the voltage stabilizing circuit is respectively connected to the MCU module and the position sensor module.

[0013] According to one embodiment of the present invention, the built-in power supply module includes an AD detection circuit, a charging management unit and an energy storage unit; the AD detection circuit is respectively connected to the MCU chip U1 and the energy storage unit; the charging management unit is respectively connected to the power supply and the MCU chip U1; the input end of the energy storage unit is connected to the charging management unit, and the output end of the energy storage unit is connected to the power supply module.

[0014] According to one embodiment of the present invention, the power-off detection module includes a transistor Q2, a first current limiting unit, a second current limiting unit, a first sampling unit and a second sampling unit; the collector C of the transistor Q2 is connected to the output end of the power supply module, the emitter E of the transistor Q2 is connected to the MCU chip U1 through the first current limiting unit, the emitter E of the transistor Q2 is grounded after passing through the second current limiting unit, the base B of the transistor Q2 is connected to the power supply after passing through the first sampling unit; the base B of the transistor Q2 is grounded after passing through the second sampling unit.

[0015] According to one embodiment of the present invention, the AD detection circuit includes a switch module and a first sampling module; the switch module includes a MOS switch tube Q6, the source 3 of the MOS switch tube Q6 is connected to the energy storage unit, and the gate 1 of the MOS switch tube Q6 is connected to the MCU chip U1; the first sampling module includes a third sampling unit and a fourth sampling unit, the drain 2 of the MOS switch tube Q6 is connected to one end of the third sampling unit, one end of the fourth sampling unit is respectively connected to the third sampling unit and the MCU chip U1, and the other end of the fourth sampling unit is grounded.

[0016] According to one embodiment of the present invention, it also includes a wireless receiving module, which includes a wireless receiving circuit and a wireless receiving module. The wireless receiving circuit includes a MOS switch tube Q5, the source 3 of the MOS switch tube Q5 is connected to the output end of the power supply module, the gate 1 of the MOS switch tube Q5 is connected to the MCU chip U1, and the drain 2 of the MOS switch tube Q5 is connected to the wireless receiving module; the wireless receiving module includes an RF chip, the RF chip has a first pin to a fifth pin, the first pin of the RF chip is connected to the drain 2 of the MOS switch tube Q5, the second pin and the third pin of the RF chip are connected to the MCU chip U1, the fourth pin of the RF chip is grounded, and the fifth pin is used to receive wireless radio frequency signals.

[0017] According to one embodiment of the present invention, a voltage conversion module is further included, wherein the input end of the voltage conversion module is connected to the power supply, and the output end of the voltage conversion module is respectively connected to the input end of the power supply module and the input end of the built-in power supply module.

[0018] According to one embodiment of the present invention, the motor driving module includes a driving circuit and a sampling circuit, the input end of the driving circuit is connected to the MCU chip U1, and the output end of the driving circuit is connected to the motor; the sampling circuit is connected to the driving circuit and the motor respectively.

[0019] According to an embodiment of the present invention, the position sensing module includes a Hall interface and a Hall sensor, and the Hall interface is connected to the MCU chip U1 and the Hall sensor respectively.

[0020] The present invention also provides a curtain, comprising the above-mentioned dual-power supply low-power consumption memory curtain control system.

[0021] The beneficial effect of the present invention is that, by setting a built-in power supply module, the position sensor module is continuously powered when the power supply is off, thereby avoiding the situation where the position sensor module is powered off, so that the position sensor module works normally and effectively memorizes the curtain position, so that the curtain control system can continuously and effectively memorize the curtain position in special use scenarios such as hotels, avoiding the situation where the traditional curtain control system repeatedly checks the stroke in the case of power failure, causing the motor to repeatedly encounter resistance and thus damage the curtain track, thus effectively improving the service life of the curtain system. At the same time, by setting the MCU chip U1 to enter the ultra-low power consumption mode, the power consumption of the entire control system is reduced, and the endurance of the built-in power module is effectively improved, so that the curtain system can maintain stroke memory even in a long-term power outage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 is a block diagram of a dual-power low-power memory curtain control system in an embodiment;

[0024] Figure 2 Schematic diagram of a dual-power low-power memory curtain control system in an embodiment;

[0025] Figure 3 is a schematic diagram of the MCU module in the embodiment;

[0026] Figure 4 is a circuit diagram of an AD sampling unit in an embodiment;

[0027] Figure 5 is a circuit diagram of a voltage conversion module in an embodiment;

[0028] Figure 6 is a schematic diagram of a power supply module in an embodiment;

[0029] Figure 7 is a circuit diagram of a power failure detection module in an embodiment;

[0030] Figure 8 is a wireless receiving circuit diagram in an embodiment;

[0031] Fig. 9 is a circuit diagram of a wireless receiving module in an embodiment.

[0032] Description of Reference Numerals

[0033] 1-built-in power module; 11-AD detection circuit; 111-switch module; 112-first sampling module; 1121-third sampling unit; 1122-fourth sampling unit; 12-charging management unit; 13-energy storage unit;

[0034] 2-power supply module; 21-conversion circuit; 211-first rectifier unit; 212-second rectifier unit; 213-energy storage module; 22-voltage stabilizing circuit; 221-first filter unit; 222-second filter unit;

[0035] 3-power-off detection module; 31-first current limiting unit; 32-second current limiting unit; 33-first sampling unit; 34-second sampling unit;

[0036] 4-MCU module;

[0037] 5-position sensor module; 51-Hall interface; 52-Hall sensor;

[0038] 6-motor drive module; 61-drive circuit; 62-sampling circuit;

[0039] 7-wireless receiving module; 71-wireless receiving circuit; 72-wireless receiving module; 721-RF chip;

[0040] 8-voltage conversion module; 81-rectification unit; 82-filtering unit; 83-second sampling module. DETAILED DESCRIPTION

[0041] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0042] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] Please refer to Figure 1 , Figure 1 This is the block diagram of a dual-power supply low-power memory curtain control system. Figure 2 This embodiment provides a dual-power low-power memory curtain control system, which includes a built-in power module 1, a power supply module 2, a power failure detection module 3, an MCU module 4, a position sensor module 5 and a motor drive module 6.

[0044] The output end of the built-in power module 1 and the power supply are respectively connected to the input end of the power supply module 2. The built-in power module 1 and the power supply are used to provide power supply voltage for the dual-power low-power memory curtain control system in different scenarios. The power supply module 2 is used to switch and receive the power supply voltage of the built-in power module 1 or the power supply, and output the power supply voltage after stabilizing the voltage. The power-off detection module 3 is respectively connected to the power supply module 2, the MCU module 4 and the power supply, and the power-off detection module 3 is used to detect whether the power supply is powered off. When the power supply module 2 detects that the power supply is powered off, the power-off detection module 3 sends a power-off signal to the MCU module 4. The MCU module 4 includes an MCU chip U1 and its peripheral circuits. The MCU chip U1 is respectively connected to the power supply module 2 and the power-off detection module 3. When the MCU chip U1 receives the power-off signal, the MCU chip U1 switches the system to an ultra-low power consumption mode. In the ultra-low power consumption mode, the built-in power module 1 supplies power to the MCU chip U1 and the position sensor module 5. The position sensing module 5 is connected to the MCU chip U1 and the power supply module 2 respectively. The position sensing module 5 is used to record the motor rotation information and send the motor rotation information to the MCU chip U1. The MCU chip U1 calculates the position information according to the motor rotation information, and then the MCU chip U1 calculates and generates a control signal according to the position information. The motor driving module 6 is connected to the MCU chip U1, and the motor driving module 6 is controlled by the MCU chip U1. The motor driving module 6 receives the control signal and drives the motor according to the control signal to make the motor run or stop.

[0045] Please refer to Figure 3 , Figure 3 Schematic diagram of MCU module. In the embodiment of the present application, MCU chip U1 adopts ultra-low power consumption control chip model MSP430FR2155TRHA. The specific pin description of MCU chip has been given in the attached figure of the specification, and will not be repeated here.

[0046] Specifically, in actual use, when the power supply is normally powered, the power supply outputs a suitable working voltage after passing through the power supply module 2, and then supplies power to the MCU module 4, the position sensor module 5 and the motor drive module 6. When the MCU chip U1 receives the control instruction sent by the user, it calculates the position information according to the motor rotation information sent by the position sensor module 5, and then generates a control signal according to the position information, and sends the control signal to the motor drive module 6, and the motor drive module 6 drives the motor to rotate according to the control signal.

[0047] When the power supply fails, the power supply module 2 automatically switches to the built-in power module 1 for power supply. The power failure detection module 3 sends a power failure signal to the MCU chip U1. After receiving the power failure signal, the MCU chip U1 switches the dual-power low-power memory curtain control system to the ultra-low power consumption mode. In the ultra-low power consumption mode, the built-in power module 1 provides the MCU chip U1 and the position sensor module 5 with power supply voltage. The position sensor module 5 and the MCU chip U1 can work normally under the power supply of the built-in power module 1, so that the position information of the curtain is effectively recorded. In the ultra-low power consumption mode, the motor drive module 6 is in a dormant state, and the motor drive module 6 cannot work normally, thereby reducing the energy consumption of the system to extend the battery life of the built-in power module 1. When the curtain is manually pulled and the position sensor module 5 detects that the motor is rotating, the position sensor module 5 generates a pulse signal and sends the pulse signal to the MCU chip U1. The MCU chip U1 exits the ultra-low power consumption mode after receiving the pulse signal.

[0048] By setting a built-in power supply module 1, the position sensor module 5 is continuously powered when the power supply is cut off, thereby avoiding the situation that the position sensor module 5 is powered off, so that the position sensor module 5 works normally and effectively memorizes the curtain position. There is no need to check the travel again when the curtain is enabled next time, so that the curtain control system can continuously and effectively memorize the position of the curtain in special use scenarios such as hotels, avoiding the situation that the traditional curtain control system repeatedly checks the travel in the case of power failure, causing the motor to repeatedly encounter resistance and damage the curtain track, thus effectively improving the service life of the curtain system. At the same time, by setting the MCU module 4 to enter the ultra-low power consumption mode, the power consumption of the entire control system is reduced, and the endurance of the built-in power supply module 1 is effectively improved, so that the curtain system can maintain travel memory even in a long-term power outage. In this example, the MCU module 4 uses an ultra-low power control chip of model MSP430FR2155TRHA, which further reduces energy consumption.

[0049] Please refer to Figure 2 The built-in power module 1 includes an AD detection circuit 11, a charging management unit 12 and an energy storage unit 13. The AD detection circuit 11 is connected to the energy storage unit 13 and the MCU module 4 respectively. The charging management unit 12 is connected to the power supply and the MCU chip U1 respectively, the input end of the energy storage unit 13 is connected to the charging management unit 12, and the output end of the energy storage unit 13 is connected to the power supply module 2.

[0050] The AD detection circuit 11 is used to detect the voltage value of the energy storage unit 13, and feed back the voltage value of the energy storage unit 13 to the MCU chip U1. When the voltage value of the energy storage unit 13 drops to a threshold value, the MCU chip U1 sends a charging signal to the charging management unit 12. When the power supply is normally supplied, the power supply charges the energy storage unit 13 through the charging management unit 12. In this way, the effect of automatic charging of the energy storage unit 13 is achieved. It should be noted that in this example, the energy storage unit 13 is an energy storage battery that can provide a voltage of 3.2V-4.2V. The charging management unit 12 includes a charging management chip IC1, and the charging management chip IC1 adopts a charging management chip model TP4057.

[0051] Please refer to Figure 4 , Figure 4 is a circuit diagram of an AD sampling unit. Further, the AD detection circuit 11 includes a switch module 111 and a first sampling module 112. Among them, the switch module 111 includes a MOS switch tube Q6, the source 3 of the MOS switch tube Q6 is connected to the energy storage unit 13, and the gate 1 of the MOS switch tube Q6 is connected to the BAT-PWRC pin of the MCU chip U1. The first sampling module 112 includes a third sampling unit 1121 and a fourth sampling unit 1122. The drain 2 of the MOS switch tube Q6 is connected to one end of the third sampling unit 1121, and one end of the fourth sampling unit 1122 is respectively connected to the third sampling unit 1121 and the MCU module 4, and the other end of the fourth sampling unit 1122 is grounded.

[0052] In this example, the switch module 111 also includes a resistor R36 and a resistor R35, and the resistor R35 and the resistor R36 are both used for current limiting. One end of the resistor R36 is connected to the energy storage unit 13 and the source of the MOS tube Q6, and the other end of the resistor R36 is connected to the gate 1 of the MOS tube Q6. One end of the resistor R35 is connected to the gate 1 of the MOS tube Q6 and the resistor R36, and the other end is connected to the BAT_PWRC pin of the MCU chip U1. The first sampling module 112 also includes a resistor R29, a diode ZD1 and a capacitor C21. The resistor R29 is used for current limiting, and one end of the resistor R29 is connected to the third sampling unit 1121 and the fourth sampling unit 1122, respectively, and the other end is connected to the diode ZD1, the capacitor C21 and the BAT_ADC pin of the MCU chip U1. One end of the diode ZD1 is connected to the resistor R29, the capacitor C21 and the BAT_ADC pin of the MCU chip U1, and the other end is grounded. One end of the capacitor C21 is connected to the resistor R29, the diode ZD1 and the BAT_ADC pin of the MCU chip U1, and the other end is grounded. The capacitor C21 is used for filtering.

[0053] In the actual use scenario of the circuit, when the voltage of the energy storage unit 13 needs to be detected, the BAT_ADC pin of the MCU chip U1 sends a high-level signal to the gate 1 of the MOS tube Q6. At this time, the MOS tube Q6 is turned on, and the MCU module 4 collects the voltage of the energy storage unit 13 through the drain 2 of the MOS tube Q6. Resistors R28 and R30 are connected to the drain 2 of the MOS tube Q6 as sampling resistors, and the BAT_ADC end of the MCU module collects the voltage between the resistor R28 and the resistor R29, thereby detecting the voltage of the energy storage unit 13. When the power supply is powered off, the MCU module 4 is in ultra-low power consumption mode, and the BAT_ADC pin of the MCU chip U1 sends a low-level signal to the gate 1 of the MOS tube, and the MOS tube Q6 cannot be turned on. At this time, the third sampling unit 1121 and the fourth sampling unit 1122 cannot consume the energy of the energy storage unit 13. As a result, the loss of power to the energy storage unit 13 is minimized.

[0054] Furthermore, the dual-power low-power memory curtain control system also includes a voltage conversion module 8. The input end of the voltage conversion module 8 is connected to the power supply, and the output end of the voltage conversion module 8 is respectively connected to the input end of the power supply module 2 and the input end of the built-in power supply module 1. The voltage conversion module 8 is used to step down the voltage and convert the power supply into a suitable voltage to output to the circuit.

[0055] Please refer to Figure 5 , Figure 5 The circuit diagram of the voltage conversion module. Specifically, the voltage conversion module 8 includes a MOS switch tube Q4, a rectifier unit 81, a buck chip U7, a filter unit 82 and a second sampling module 83. The source 3 of the MOS switch tube Q4 is connected to the power supply, the gate 1 of the MOS switch tube Q4 is grounded, the drain 2 of the MOS switch tube Q4 is connected to the input end of the rectifier unit 81, and the output end of the rectifier unit 81 is connected to the input end of the buck chip U7. The filter unit 82 and the second sampling module 83 are connected to the output end of the filter chip U7. The filter unit 82 is used for filtering and stabilizing the voltage. The second sampling module 83 is used to collect the output voltage of the voltage conversion module 8, and the output voltage of the output voltage conversion module 8 is fed back to the filter chip U7, so that the filter chip U7 can adjust the output voltage at any time.

[0056] In this example, the voltage conversion module 8 also includes a resistor R2, a resistor R1, a resistor R4, a capacitor EC6 and a resistor R5, the rectifier unit 81 includes a diode D3, the filter unit 82 includes a capacitor C1, an inductor L2, a capacitor EC1 and a capacitor C2, and the second sampling module 83 includes a resistor R19 and a resistor R23. The source 3 of the MOS switch tube Q4 is connected to a 24V / 2A power supply, and the gate 1 of the MOS switch tube Q4 is grounded after passing through the resistor R2. The transistor Q2 of the power-off detection module 3 collects the voltage of the drain 2 of the MOS switch tube Q4. The positive electrode of the diode D3 is connected to the drain 2 of the MOS switch tube Q4, and its negative electrode is connected to the resistor R1 and the resistor R4 respectively. The resistor R1 and the resistor R4 are connected in parallel, and the resistor R1 and the resistor R4 are used for voltage division. The buck chip U7 adopts a buck chip of model LN5016, which has pins 1-pin 6. One end of the capacitor EC6 is connected to the resistor R1 and the resistor R4 respectively, and the other end thereof is grounded. One end of the resistor R5 is connected to the resistor R1 and the resistor R4 respectively, and the other end thereof is connected to the pin 4. The pin 2 of the buck chip U7 is grounded. The capacitor C1 is connected to the pin 1 of the buck chip U7, and the capacitor L2 is connected in series with the capacitor C1. One end of the capacitor EC1 is connected to the inductor L2, and the other end thereof is grounded. One end of the capacitor C2 is connected to the inductor L2 and the capacitor EC1 respectively, and the other end thereof is grounded.

[0057] The 24V / 2A power supply is input from the source 3 of the MOS switch tube Q4, rectified and stabilized by the diode D3, and then input to the buck chip U7 after current limiting by the resistor R1 and the resistor R2, and stepped down by the buck chip U7. After stepping down, the +5V voltage is output to the input end of the second rectifier unit 212 after filtering by the filter unit 82. One end of the resistor R19 is connected to the +5V voltage, and the other end is connected to the resistor R23. The other end of the resistor R23 is grounded, and the resistor R19 and the resistor R23 are both sampling resistors. The pin 3 of the buck chip U7 is connected to the resistor R19 and the resistor R23 respectively, and the pin 3 of the buck chip U7 adjusts the output voltage value by collecting the voltage between the resistor 19 and the resistor R23.

[0058] Please refer to Figure 2 and Figure 6 , Figure 6 The power supply module 2 includes a conversion circuit 21 and a voltage stabilizing circuit 22, the input end of the conversion circuit 21 is respectively connected to the power supply and the output end of the built-in power module 1, the output end of the conversion circuit 21 is connected to the input end of the voltage stabilizing circuit 22, and the output end of the voltage stabilizing circuit 22 is respectively connected to the MCU module 4 and the position sensor module 5.

[0059] The conversion circuit 21 is used to automatically switch the power supply mode, and the voltage stabilizing circuit 22 is used to convert the output voltage of the conversion circuit 21 into a stable voltage output. In this example, the conversion circuit 21 includes a first rectifier unit 211, a second rectifier unit 212 and an energy storage module 213. The input end of the first rectifier unit 211 is connected to the energy storage module 13, the input end of the second rectifier unit 212 is connected to the +5V power supply voltage output by the voltage conversion module 8, and the output ends of the first rectifier unit 211 and the second rectifier unit 212 are commonly connected to the energy storage module 213. The voltage stabilizing circuit 22 includes a voltage stabilizing chip U8, a first filter unit 221 and a second filter unit 222. The output end of the energy storage module 213 is connected to the input end of the voltage stabilizing chip U8, the first filter unit 221 and the second filter unit 222 are connected to the output end of the voltage stabilizing chip U8, and the first filter unit 221 and the second filter unit 222 are used for voltage stabilization and filtering.

[0060] In actual application scenarios, when the power supply is supplying power normally, the energy storage unit 13 cuts off the power supply, and when the power supply is powered off, the energy storage unit 13 supplies power. Since the energy storage module 213 is provided, the energy storage module 213 discharges to provide voltage, so that the power supply switches quickly. The voltage of the power supply or the voltage of the built-in power module 1 is filtered by the first filtering unit 221 and enters the voltage stabilizing chip U8. After being stabilized by the voltage stabilizing chip U8, a stable 3.3V power supply voltage is output through the second filtering unit 222.

[0061] In this example, the first rectifier unit 211 includes a diode D4, and the second rectifier unit 212 includes a diode D2. The energy storage module 213 includes capacitors EC3, EC4 and C19 connected in parallel. The first filter unit 221 includes capacitors EC5 and C20 connected in parallel. The positive electrode of the diode D4 is connected to the energy storage unit 13, the positive electrode of the diode D2 is connected to the output end of the voltage conversion module 8, the negative electrode of the diode D4 and the negative electrode of the diode D2 are connected to one end of the capacitor CE3, the capacitor CE3 is also connected to the input end of the voltage stabilizing chip U8, and the other end of the capacitor CE3 is grounded. The capacitor EC4 and the capacitor C19 are connected in parallel with the capacitor CE3. One end of the capacitor CE5 is connected to the output end of the voltage stabilizing chip U8, and the other end thereof is grounded, and the capacitor C20 is connected in parallel with the capacitor CE5.

[0062] Please refer to Figure 7 , Figure 7The circuit diagram of the power-off detection module. Specifically, the power-off detection module 3 includes a transistor Q2, a first current limiting unit 31, a second current limiting unit 32, a first sampling unit 33 and a second sampling unit 34. Among them, the collector C of the transistor Q2 is connected to the output end of the power supply module 2, the emitter E of the transistor Q2 is connected to the Power_Down pin of the MCU chip U1 through the first current limiting unit 31, and the emitter E of the transistor Q2 is grounded after passing through the second current limiting unit 32. The base B of the transistor Q2 is connected to the power supply after passing through the first sampling unit 33, and the base B of the transistor Q2 is grounded after passing through the second current limiting unit 32. In this example, the base B of the transistor Q2 is connected to the drain 2 of the MOS switch tube Q4 after passing through the first sampling unit.

[0063] When the power supply is powered off, the potential of the base B of the transistor Q2 is lower than the potential of the emitter E of the transistor Q2, and the transistor Q2 is cut off. The emitter E of the transistor Q2 is at a high level. At this time, the Power_Down pin of the MCU chip U1 receives the power-off signal of the transistor Q2 and then switches to the ultra-low power mode. After the power supply is powered off, the built-in power module 1 is used to supply power. By adopting the ultra-low power mode, the energy consumption of the dual-power low-power memory curtain control system can be reduced, and the endurance of the built-in power module 1 can be extended.

[0064] The position sensing module 5 includes a Hall interface 51 and a Hall sensor 52 . The Hall sensor 52 is connected to the MCU module 4 via the Hall interface 51 . The MCU module 4 supplies power to the Hall sensor 52 via the Hall interface 51 . Meanwhile, the Hall sensor 52 transmits data to the MCU module 4 via the Hall interface 51 .

[0065] The Hall sensor 52 is also electrically connected to the motor, and is used to record the number of revolutions of the motor and feed the number of revolutions of the motor back to the MCU module 4. When the motor stops rotating, the MCU module 4 calculates the travel distance of the motor according to the number of revolutions of the motor, and obtains and records the current position of the curtain.

[0066] When the curtain is started next time, the MCU module 4 drives the motor to rotate according to the recorded travel position, thereby preventing the motor from moving beyond the limit. When the power supply is cut off, the energy storage unit 13 supplies power to the position sensor module 5 to prevent the Hall sensor 52 from losing data due to sudden power failure.

[0067] When in ultra-low power mode, only when the curtain is manually pulled, the Hall sensor 52 detects the rotation of the motor, and the Hall sensor 52 sends a pulse signal to the MCU module 4 through the Hall interface 52. After receiving the pulse signal, the MCU module 4 exits the ultra-low power mode, and the dual-power low-power memory curtain system can be used normally. In this way, when the power supply is cut off, the dual-power low-power memory curtain system is in low power mode to reduce energy consumption.

[0068] The motor driving module 6 includes a driving circuit 61 and a sampling circuit 62, wherein the input end of the driving circuit 61 is connected to the MCU module 4, and the output end of the driving circuit 61 is connected to the motor. The sampling circuit 62 is connected to the MCU module 4, the driving circuit 61 and the motor respectively. The driving circuit 61 is used to receive the driving signal of the MCU module 4 and drive the motor to rotate according to the driving signal. The sampling circuit 62 is used to collect the input voltage of the driving circuit 61.

[0069] Please refer to Figure 8 and Fig. 9 , Figure 8 This is the wireless receiving circuit diagram. Fig. 9 : is a circuit diagram of a wireless receiving module. In addition, the dual power low power memory curtain control system further comprises a wireless receiving module 7, which is used for wireless control of the curtain system. The wireless receiving module 7 comprises a wireless receiving circuit 71 and a wireless receiving module 72.

[0070] Specifically, the wireless receiving circuit 71 includes a MOS switch tube Q5, which is used to switch the power supply state of the wireless receiving module 72. Among them, the source 3 of the MOS switch tube Q5 is connected to the output end of the power supply module 2, and the source 3 of the MOS switch tube Q5 is used to receive a 3.3V power supply voltage. The gate 1 of the MOS switch tube Q5 is connected to the EN pin of the MCU chip U1, and the drain 2 of the MOS switch tube Q5 is connected to the wireless receiving module 72. The wireless receiving module 72 includes an RF chip 721, and the RF chip 721 has a first pin to a fifth pin. The first pin of the RF chip 721 is connected to the drain 2 of the MOS switch tube Q5, the second pin of the RF chip 721 is connected to the RF_DATA pin of the MCU chip U1, the third pin of the RF chip 721 is connected to the RF_SLEEP_EN pin of the MCU chip U1, the fourth pin of the RF chip 721 is grounded, and its fifth pin is used to receive a wireless radio frequency signal. In this example, the RF chip 721 uses a chip model AOK-RM03-HC.

[0071] In actual use, when the power supply is cut off, the MCU chip U1 switches to the ultra-low power mode. The EN pin of the MCU chip U1 sends a high level to the gate of the MOS switch tube Q5, so that the MOS switch tube Q5 is turned off, and the 3.3V voltage cannot power the RF chip 721 through the MOS switch tube Q5. At this time, the RF chip 721 is in a dormant state. Therefore, in the ultra-low power mode, the wireless receiving module 7 is in a dormant state and cannot control the dual-power low-power memory curtain control system through wireless control to reduce the power consumption of the system.

[0072] In another embodiment, the present invention further provides a curtain, comprising the dual-power supply low-power consumption memory curtain control system described above.

[0073] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A dual power supply low power consumption memory curtain control system, characterized in that: include: Built-in power module (1); A power supply module (2), the input end of the power supply module (2) being respectively connected to the output end of the built-in power supply module (1) and the power supply; the power supply module (2) is used to switch and receive the power supply voltage of the built-in power supply module (1) or the power supply, and output the power supply voltage in a regulated voltage; A power-off detection module (3), the power-off detection module (3) being connected to the power supply module (2) and the power supply respectively; the power-off detection module (3) is used to detect whether the power supply is powered off, and when the power supply is powered off, the power-off detection module (3) sends a power-off signal; The MCU module (4) comprises an MCU chip U1 and its peripheral circuits; the MCU chip U1 is respectively connected to the power supply module (2) and the power-off detection module (3); when the MCU chip U1 receives a power-off signal, the MCU chip U1 switches the system to an ultra-low power consumption mode; A position sensing module (5), wherein the position sensing module (5) is connected to the MCU chip U1 and the power supply module (2) respectively; the position sensing module (5) is used to detect and record the rotation information of the motor, and send the motor rotation information to the MCU chip U1; the MCU chip U1 calculates the position information according to the motor rotation information, and then calculates and generates a control signal according to the position information; in the ultra-low power consumption mode, the built-in power supply module (1) supplies power to the position sensing module (5) and the MCU module (4); A motor driving module (6), wherein the motor driving module (6) is connected to the MCU chip U1, and the motor driving module (6) receives a control signal and drives the motor according to the control signal.

2. A dual-power low-power memory curtain control system according to claim 1, characterized in that: The power supply module (2) comprises a conversion circuit (21) and a voltage stabilizing circuit (22); the input end of the conversion circuit (21) is respectively connected to the output end of the built-in power supply module (1) and the power supply; the output end of the conversion circuit (21) is connected to the input end of the voltage stabilizing circuit (22); and the output end of the voltage stabilizing circuit (22) is respectively connected to the MCU module (4) and the position sensor module (5).

3. A dual-power low-power memory curtain control system according to claim 1, characterized in that: The built-in power supply module (1) comprises an AD detection circuit (11), a charging management unit (12) and an energy storage unit (13); the AD detection circuit (11) is respectively connected to the MCU chip U1 and the energy storage unit (13); the charging management unit (13) is respectively connected to a power supply and the MCU chip U1; the input end of the energy storage unit (13) is connected to the charging management unit (12), and the output end of the energy storage unit (13) is connected to the power supply module (2).

4. A dual-power low-power memory curtain control system according to claim 1, characterized in that: The power-off detection module (3) comprises a transistor Q2, a first current limiting unit (31), a second current limiting unit (32), a first sampling unit (33) and a second sampling unit (34); the collector C of the transistor Q2 is connected to the output end of the power supply module (2); the emitter E of the transistor Q2 is connected to the MCU chip U1 via the first current limiting unit (31); the emitter E of the transistor Q2 is grounded after passing through the second current limiting unit (32); the base B of the transistor Q2 is connected to the power supply after passing through the first sampling unit (33); and the base B of the transistor Q2 is grounded after passing through the second sampling unit (34).

5. A dual-power low-power memory curtain control system according to claim 3, characterized in that: The AD detection circuit (11) comprises a switch module (111) and a first sampling module (112); the switch module (111) comprises a MOS switch tube Q6, a source electrode 3 of the MOS switch tube Q6 is connected to the energy storage unit (13), and a gate electrode 1 of the MOS switch tube Q6 is connected to the MCU chip U1; The first sampling module (112) comprises a third sampling unit (1121) and a fourth sampling unit (1122); the drain 2 of the MOS switch tube Q6 is connected to one end of the third sampling unit (1121); one end of the fourth sampling unit (1122) is respectively connected to the third sampling unit (1121) and the MCU chip U1; and the other end of the fourth sampling unit (1122) is grounded.

6. A dual-power low-power memory curtain control system according to claim 1, characterized in that: The invention also comprises a wireless receiving module (7), wherein the wireless receiving module (7) comprises a wireless receiving circuit (71) and a wireless receiving module (72), wherein the wireless receiving circuit (71) comprises a MOS switch tube Q5, wherein the source electrode 3 of the MOS switch tube Q5 is connected to the output end of the power supply module (2), the gate electrode 1 of the MOS switch tube Q5 is connected to the MCU chip U1, and the drain electrode 2 of the MOS switch tube Q5 is connected to the wireless receiving module (72); the wireless receiving module (72) comprises an RF chip (721), wherein the RF chip (721) has a first pin to a fifth pin, wherein the first pin of the RF chip (721) is connected to the drain electrode 2 of the MOS switch tube Q5, the second pin and the third pin of the RF chip (721) are connected to the MCU chip U1, the fourth pin of the RF chip (721) is grounded, and the fifth pin is used for receiving wireless radio frequency signals.

7. A dual-power low-power memory curtain control system according to claim 1, characterized in that: It also comprises a voltage conversion module (8), the input end of the voltage conversion module (8) being connected to a power supply, and the output end of the voltage conversion module (8) being respectively connected to the input end of the power supply module (2) and the input end of the built-in power supply module (1).

8. A dual-power low-power memory curtain control system according to claim 1, characterized in that: The motor driving module (6) comprises a driving circuit (61) and a sampling circuit (62); the input end of the driving circuit (61) is connected to the MCU chip U1, and the output end of the driving circuit (61) is connected to the motor; the sampling circuit (62) is respectively connected to the driving circuit (61) and the motor.

9. A dual-power low-power memory curtain control system according to claim 1, characterized in that: The position sensing module (5) comprises a Hall interface (51) and a Hall sensor (52), and the Hall interface (51) is connected to the MCU chip U1 and the Hall sensor (52) respectively.

10. A curtain, characterized in that: It comprises a dual-power supply low-power consumption memory curtain control system as described in any one of claims 1-9.

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