Umbrella control circuit and umbrella

Abstract

The invention discloses an umbrella control circuit and an umbrella, belongs to the technical field of umbrellas, and aims to solve the technical problem that in the prior art, an MCU chip / controller and related circuits are not used for controlling the umbrella to be unfolded or folded. The system comprises a master control MCU, a charging circuit, a motor driving circuit, a battery charging circuit, an electric quantity detection circuit, an MCU power supply circuit, a state indicating lamp circuit and a button circuit, the master control MCU is electrically connected with the state indicating lamp circuit through an LEDR signal and an LEDG signal, the master control MCU is electrically connected with the charging circuit through a CHARGDET signal and a CHDET signal, the master control MCU is electrically connected with the MCU power supply circuit through a 3V3 signal, and the button circuit is electrically connected with the MCU power supply circuit through a power supply circuit. The main control MCU is electrically connected with the electric quantity detection circuit through a DETEN signal and a BATDET signal, the main control MCU is electrically connected with the key circuit through a KEY1 signal, a KEY2 signal and a MOTERDET signal, and the main control MCU is electrically connected with the motor driving circuit through a MOTERB signal and a MOTERA signal; the charging circuit is electrically connected with the MCU power supply circuit and the battery charging circuit through BAT7V4 signals.

Description

Technical Field

[0001] The present invention belongs to the technical field of umbrellas, and relates to a control circuit of an umbrella, in particular to a control circuit and an umbrella of an umbrella capable of realizing automatic opening / closing. Background Art

[0002] All along, most umbrellas have been technically improved in terms of their mechanical structures and appearances. For example, the Chinese invention patent application with the application number 201310102792.9 discloses an intelligent umbrella, which includes a handle, a rod, and a top connected in sequence. An umbrella surface is installed under the top, the umbrella surface is connected to a cover cloth, rivets are installed at the connection between the umbrella surface and the cover cloth, and ventilation holes are provided under the cover cloth; this umbrella is convenient to carry and will not turn over after being opened.

[0003] With the development and application of electronic information technology, more and more umbrellas apply technologies such as electronic information and the Internet. A microcontroller unit (MCU), also known as a single-chip microcomputer or a microcontroller, is to appropriately reduce the frequency and specifications of a central processing unit (CPU), and integrate peripherals such as memory, timer, USB (Universal Serial Bus), and A / D conversion, and even an LCD (Liquid Crystal Display) driver circuit on a single chip to form a computer at the chip level for different combinations of control for different application scenarios. It can be seen in mobile phones, PC peripherals, remote controls, automotive electronics, and the control of stepping motors and robotic arms in industry. How to apply the MCU chip to automated and intelligent umbrellas is a technical problem that needs to be further solved by those skilled in the art.

[0004] The invention patent application with the application number 202111460156.4 discloses an intelligent shared umbrella based on an MCU chip and its working method. By configuring a linear reciprocating motion mechanism and a connecting piece in the middle rod of the umbrella body, and a fingerprint collector, a wireless communication module, a driving mechanism and a control circuit based on the MCU chip on the umbrella handle, the control circuit can judge whether it is stolen according to the first fingerprint feature information and the second fingerprint feature information collected again by the fingerprint collector during the use of the intelligent shared umbrella. If so, it uploads an alarm message and controls the driving mechanism to disable the intelligent shared umbrella, so as to realize the intelligent purpose of verifying the identity of the user during the use of the shared umbrella, prevent the situation of illegal personnel stealing the shared umbrella after it is taken away, and at the same time, by uploading the alarm message, it can timely notify the legal user to search or remotely return the umbrella, ensuring the safe experience of the user.

[0005] As described in the above invention patent application, in the prior art, the MCU chip / controller is used in the umbrella mainly for realizing the shared control of the umbrella, and rarely involves applying it to the automatic opening or closing control of the umbrella. Summary of the Invention

[0006] The purpose of the present invention is to provide an umbrella control circuit and an umbrella to solve the technical problem that the MCU chip / controller and related circuits are not used to control the opening or closing of the umbrella in the prior art.

[0007] The present invention specifically adopts the following technical solutions to achieve the above purpose: An umbrella control circuit, further comprising a main control MCU, a charging circuit, a motor drive circuit, a battery charging circuit, a power detection circuit, an MCU power supply circuit, a status indicator circuit and a key circuit; The main control MCU includes chip U3. The pin 2 of chip U3 is connected to the LED_R signal, the pin 3 is connected to the LED_G signal, the pin 4 is connected to the CHARG_DET signal, the pin 5 is connected to the 3V3 signal, the pin 6 is connected to the CH_DET signal, the pin 7 is connected to the DET_EN signal, the pin 9 is connected to the MOTER_DET signal, the pin 10 is connected to the BAT_DET signal, the pin 11 is connected to the MOTER_A signal, the pin 12 is grounded, the pin 13 is connected to the MOTER_B signal, the pin 14 is connected to the KEY2 signal, and the pin 15 is connected to the KEY1 signal; The main control MCU is electrically connected to the status indicator light circuit through the LED_R signal and the LED_G signal, electrically connected to the charging circuit through the CHARG_DET signal and the CH_DET signal, electrically connected to the MCU power supply circuit through the 3V3 signal, electrically connected to the power detection circuit through the DET_EN signal and the BAT_DET signal, electrically connected to the key circuit through the KEY1 signal, the KEY2 signal, and the MOTER_DET signal, and electrically connected to the motor drive circuit through the MOTER_B signal and the MOTER_A signal; the charging circuit is electrically connected to the MCU power supply circuit and the battery charging circuit through the BAT_7V4 signal.

[0008] Further, the charging circuit includes chip U4. The pin 2 of chip U4 is grounded through resistor R18; the pin 3 of chip U4 is connected to the drain D of MOS transistor Q2. The source S of MOS transistor Q2 is connected to the BAT_7V4 signal. The gate G of MOS transistor Q2 is connected to the collector C of triode Q9 through resistor R1. The emitter E of triode Q9 is grounded. A resistor R7 is also connected between the connection line of the source S of MOS transistor Q2 and the BAT_7V4 signal and the connection line of the gate G of MOS transistor Q2 and resistor R1; the pin 4 of chip U4 is grounded through capacitor C7; the pin 5 of chip U4 is connected to the 5V signal through inductor L1. A diode D1 is also connected between the connection line of the pin 4 of chip U4 and capacitor C7 and the connection line of the pin 5 of chip U4 and inductor L1; the pin 6 of chip U4 is connected to the 5V signal through diode D2; the pin 7 of chip U4 is connected to the power supply 5V through resistor R19; the pin 8 of chip U4 is connected to the CH_DET signal. The connection line of the pin 8 of chip U4 and the CH_DET signal is electrically connected to the connection line of resistor R18 and the ground wire through resistor R4; it also includes a parallel combination of capacitor C9 and resistor R2. One end of resistor R2 is connected to resistor R19, and the other end of resistor R2 is connected to the base B of triode Q9. One end of capacitor C9 is connected to resistor R19, and the other end of capacitor C9 is connected to the connection line of the emitter E of triode Q9 and the ground wire; a capacitor C8 is also connected between the connection line of the pin 6 of chip U4 and diode D2 and the connection line of the pin 5 of chip U4 and inductor L1; the connection line of the pin 7 of chip U4 and resistor R19 is electrically connected to the connection line of diode D2 and the power supply 5V; resistor R19 is also in parallel with capacitor C9 and resistor R2. The other end of resistor R2 is connected to the base B of triode Q9, and the other end of capacitor C9 is connected to the connection line of the emitter E of triode Q9 and the ground wire; the connection line of resistor R19 and the 5V signal is grounded sequentially through resistor R3 and resistor R17, and the connection line of resistor R3 and resistor R17 is connected to the CHARG_DET signal; the connection line of inductor L1 and the 5V signal is also in parallel with capacitor C10, capacitor C12, and capacitor C3. The other ends of capacitor C10, capacitor C12, and capacitor C3 are all grounded respectively.

[0009] Further, the power detection circuit includes a triode Q7. The emitter E of the triode Q7 is connected to the BAT_7V4 signal. The collector C of the triode Q7 is grounded through a resistor R25 and a resistor R24 in sequence, and the connection line between the resistor R25 and the resistor R24 is connected to the BAT_DET signal. The base B of the triode Q7 is connected to the collector C of the triode Q8 through a resistor R23. The emitter E of the triode Q8 is grounded, and the base B of the triode Q8 is connected to the DET_EN signal through a resistor R26. A resistor R6 is connected between the connection line of the emitter E of the triode Q7 and the BAT_7V4 signal and the connection line of the base B of the triode Q7 and the resistor R23.

[0010] Further, the MCU power supply circuit includes a linear voltage regulator Q1. The pin 1 of the linear voltage regulator Q1 is connected to the BAT_7V4 signal through a resistor R5. The pin 2 of the linear voltage regulator Q1 is grounded. The pin 3 of the linear voltage regulator Q1 is connected to the 3V3 signal. A capacitor C2 is also connected between the connection line of the pin 2 of the linear voltage regulator Q1 and the ground wire and the connection line of the pin 1 of the linear voltage regulator Q1 and the resistor R5. A capacitor C4 is also connected between the connection line of the pin 2 of the linear voltage regulator Q1 and the ground wire and the connection line of the pin 3 of the linear voltage regulator Q1 and the 3V3 signal.

[0011] Further, the motor drive circuit includes a chip U1. The pin 1 of the chip U1 is connected to the MOTER_B signal through a resistor R16. The pin 2 of the chip U1 is connected to the MOTER_A signal through a resistor R8. The pin 3 of the chip U1 is set to an equipotential. The pin 4 of the chip U1 is connected to the BAT_7V4 signal. The pins 5 and 6 of the chip U1 are both connected to the M+ signal. The pins 7 and 8 of the chip U1 are both connected to the M- signal.

[0012] Further, the battery charging circuit includes an interface TYPE-C, an interface CON1, an interface CON2, an interface CON5, and an interface CON6; Pin 1 and Pin 6 of the interface TYPE-C are both grounded, Pin 2 and Pin 5 of the interface TYPE-C are both connected to a 5V signal, Pin 3 of the interface TYPE-C is grounded through a resistor R2, and Pin 4 of the interface TYPE-C is grounded through a resistor R1; Pin 2 of the interface CON1 is grounded, Pin 1 of the interface CON1 is connected to the BAT_7V4 signal, and capacitors C1, C5, and C11 are respectively connected in parallel on the connection line between Pin 1 of the interface CON1 and the BAT_7V4 signal, and the other ends of C1, C5, and C11 are all grounded; Pin 1 of the interface CON2 is connected to the LED_G signal, Pin 2 of the interface CON2 is connected to the LED_R signal, Pin 3 of the interface CON2 is connected to the M- signal, Pin 4 of the interface CON2 is connected to the M+ signal, Pin 5 of the interface CON2 is grounded, and Pin 6 of the interface CON2 is connected to a 5V signal; Pin 1 of the interface CON5 is connected to a 5V signal, Pin 2 of the interface CON5 is grounded, Pin 3 of the interface CON5 is connected to the M+ signal, Pin 4 of the interface CON5 is connected to the M- signal, Pin 5 of the interface CON5 is connected to the LED_R signal, and Pin 6 of the interface CON5 is connected to the LED_G signal; Pin 1 of the interface CON6 is connected to the M- signal, and Pin 2 of the interface CON6 is connected to the M+ signal.

[0013] Further, the status indicator circuit includes an indicator LED1, and the indicator LED1 includes two optocouplers. The negative electrodes of the two optocouplers are both grounded through a resistor R7, the positive electrode of one optocoupler is connected to the LED_R signal, and the positive electrode of the other optocoupler is connected to the LED_G signal.

[0014] Further, the key circuit includes a resistor R12, a switch S1, and a switch S2. One end of the resistor R12 is connected to the MOTER_DET signal, the other end of the resistor R12 is set to an equipotential, and the equipotential end of the resistor R12 is also grounded through a resistor R11; One ends of the switch S1 and the switch S2 are both grounded, the other end of the switch S1 is connected to the KEY1 signal, and the other end of the switch S2 is connected to the KEY2 signal.

[0015] An umbrella includes an umbrella body, and a control circuit for controlling the opening, closing, charging, power detection, and status indication of the umbrella body is arranged in the umbrella body, and the control circuit adopts the above-mentioned umbrella control circuit.

[0016] The beneficial effects of the present invention are as follows: 1. In the present invention, the main control MCU is connected to the key circuit through the KEY1 signal, KEY2 signal, and MOTER_DE signal. By pressing the switch and detecting the on / off and release conditions of the corresponding switch, the main control MCU outputs control signals to the motor drive circuit through the MOTER_A signal and MOTER_B signal, enabling the motor on the umbrella to drive and realizing the automatic opening and closing of the umbrella; the whole process does not require a complex operation process, greatly improving the convenience of using the umbrella.

[0017] 2. In the present invention, the main control MCU detects the charging process through the CH_DET signal, CHARG_DET signal, and DET_EN signal, which helps to timely detect abnormal situations and take protective measures to ensure the safe operation of the umbrella and reduce the risk of damage to the umbrella due to faults.

[0018] 3. In the present invention, the BAT_DET signal is used to monitor and feedback the battery power, providing accurate power data to the main control MCU. Based on these data, the main control MCU can take corresponding measures such as reminding the user to charge when the battery power is low, effectively preventing the battery from being damaged due to over-discharge or over-charging, and extending the service life of the battery.

[0019] 4. In the present invention, a rechargeable lithium battery with a voltage of 7.4V and a capacity of 280MA / H is used for power supply. While meeting the energy consumption requirements of the umbrella motor drive and other circuit components, it has a high energy density and can provide stable power support for multiple opening and closing operations of the umbrella; compared with some low-capacity or low-voltage power sources, this battery can ensure that the motor has enough power to smoothly open and close the umbrella, and to a certain extent, extends the battery life of the device and reduces the trouble of frequent charging. Description of the Drawings

[0020] Figure 1 is the circuit diagram of the main control MCU in the present invention; Figure 2 is the circuit diagram of the charging circuit in the present invention; Figure 3 is the circuit diagram of the power detection circuit in the present invention; Figure 4 is the circuit diagram of the MCU power supply circuit in the present invention; Figure 5 is the circuit diagram of the motor drive circuit in the present invention; Figure 6 is the circuit diagram of the battery charging circuit in the present invention; Figure 7 is the circuit diagram of the status indicator circuit in the present invention; Figure 8 is the circuit diagram of the key circuit in the present invention. Detailed Embodiment

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0022] Therefore, based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1 This embodiment provides an umbrella control circuit, which can be used to control the opening and closing of an umbrella, can be used to control the charging of the umbrella, can be used to control the power detection of the umbrella, and can also be used to control the status indicator light of the umbrella.

[0024] The umbrella control circuit includes a main control MCU, a charging circuit, a motor drive circuit, a battery charging circuit, a power detection circuit, an MCU power supply circuit, a status indicator light circuit, and a key circuit.

[0025] As Figure 1 shown, the main control MCU includes chip U3. The pin 2 of chip U3 is connected to the LED_R signal, the pin 3 is connected to the LED_G signal, the pin 4 is connected to the CHARG_DET signal, the pin 5 is connected to the 3V3 signal, the pin 6 is connected to the CH_DET signal, the pin 7 is connected to the DET_EN signal, the pin 9 is connected to the MOTER_DET signal, the pin 10 is connected to the BAT_DET signal, the pin 11 is connected to the MOTER_A signal, the pin 12 is grounded, the pin 13 is connected to the MOTER_B signal, the pin 14 is connected to the KEY2 signal, and the pin 15 is connected to the KEY1 signal.

[0026] As Figure 2As shown in the figure, the charging circuit includes chip U4. Pin 1 of chip U4 is an idle pin and is not involved in the connection. Pin 2 of chip U4 is grounded through resistor R18. Pin 3 of chip U4 is connected to the drain D of MOS transistor Q2. The source S of MOS transistor Q2 is connected to the BAT_7V4 signal. The gate G of MOS transistor Q2 is connected to the collector C of transistor Q9 through resistor R1. The emitter E of transistor Q9 is grounded. There is also a resistor R7 connected between the connection line of the source S of MOS transistor Q2 and the BAT_7V4 signal and the connection line of the gate G of MOS transistor Q2 and resistor R1. Pin 4 of chip U4 is grounded through capacitor C7. Pin 5 of chip U4 is connected to the 5V signal through inductor L1. There is also a diode D1 connected between the connection line of pin 4 of chip U4 and capacitor C7 and the connection line of pin 5 of chip U4 and inductor L1. Pin 6 of chip U4 is connected to the 5V signal through diode D2. Pin 7 of chip U4 is connected to the power supply 5V through resistor R19. Pin 8 of chip U4 is connected to the CH_DET signal. The connection line of pin 8 of chip U4 and the CH_DET signal is electrically connected to the connection line of resistor R18 and the ground wire through resistor R4. It also includes a parallel combination of capacitor C9 and resistor R2. One end of resistor R2 is connected to resistor R19, and the other end of resistor R2 is connected to the base B of transistor Q9. One end of capacitor C9 is connected to resistor R19, and the other end of capacitor C9 is connected to the connection line of the emitter E of transistor Q9 and the ground wire. There is also a capacitor C8 connected between the connection line of pin 6 of chip U4 and diode D2 and the connection line of pin 5 of chip U4 and inductor L1. The connection line of pin 7 of chip U4 and resistor R19 is electrically connected to the connection line of diode D2 and the power supply 5V. Resistor R19 is also in parallel with capacitor C9 and resistor R2. The other end of resistor R2 is connected to the base B of transistor Q9, and the other end of capacitor C9 is connected to the connection line of the emitter E of transistor Q9 and the ground wire. The connection line of resistor R19 and the 5V signal is also grounded sequentially through resistor R3 and resistor R17, and the connection line of resistor R3 and resistor R17 is connected to the CHARG_DET signal. The connection line of inductor L1 and the 5V signal is also in parallel with capacitor C10, capacitor C12, and capacitor C3. The other ends of capacitor C10, capacitor C12, and capacitor C3 are respectively grounded.

[0027] As Figure 3 shown in the figure, the power detection circuit includes transistor Q7. The emitter E of transistor Q7 is connected to the BAT_7V4 signal. The collector C of transistor Q7 is grounded sequentially through resistor R25 and resistor R24, and the connection line of resistor R25 and resistor R24 is connected to the BAT_DET signal. The base B of transistor Q7 is connected to the collector C of transistor Q8 through resistor R23. The emitter E of transistor Q8 is grounded. The base B of transistor Q8 is connected to the DET_EN signal through resistor R26. There is a resistor R6 connected between the connection line of the emitter E of transistor Q7 and the BAT_7V4 signal and the connection line of the base B of transistor Q7 and resistor R23.

[0028] As Figure 4 shown, the MCU power supply circuit includes a linear voltage regulator Q1. Pin 1 of the linear voltage regulator Q1 is connected to the BAT_7V4 signal via a resistor R5. Pin 2 of the linear voltage regulator Q1 is grounded. Pin 3 of the linear voltage regulator Q1 is connected to the 3V3 signal. A capacitor C2 is also connected between the connection line of pin 2 of the linear voltage regulator Q1 and the ground wire and the connection line of pin 1 of the linear voltage regulator Q1 and the resistor R5. A capacitor C4 is also connected between the connection line of pin 2 of the linear voltage regulator Q1 and the ground wire and the connection line of pin 3 of the linear voltage regulator Q1 and the 3V3 signal.

[0029] As Figure 5 shown, the motor drive circuit includes a chip U1. Pin 1 of the chip U1 is connected to the MOTER_B signal via a resistor R16. Pin 2 of the chip U1 is connected to the MOTER_A signal via a resistor R8. Pin 3 of the chip U1 is set to an equipotential. Pin 4 of the chip U1 is connected to the BAT_7V4 signal. Pins 5 and 6 of the chip U1 are both connected to the M+ signal. Pins 7 and 8 of the chip U1 are both connected to the M- signal.

[0030] As Figure 6 shown, the battery charging circuit includes an interface TYPE-C, an interface CON1 (the interface on the battery, and the battery uses a 7.4V, 280MA / H rechargeable lithium battery), an interface CON2, an interface CON5, and an interface CON6 (the interface on the motor); Pin 1 and pin 6 of the interface TYPE-C are both grounded. Pin 2 and pin 5 of the interface TYPE-C are both connected to the 5V signal. Pin 3 of the interface TYPE-C is grounded via a resistor R2. Pin 4 of the interface TYPE-C is grounded via a resistor R1; Pin 2 of the interface CON1 is grounded. Pin 1 of the interface CON1 is connected to the BAT_7V4 signal. Capacitors C1, C5, and C11 are respectively connected in parallel on the connection line between pin 1 of the interface CON1 and the BAT_7V4 signal, and the other ends of C1, C5, and C11 are all grounded; Pin 1 of the interface CON2 is connected to the LED_G signal. Pin 2 of the interface CON2 is connected to the LED_R signal. Pin 3 of the interface CON2 is connected to the M- signal. Pin 4 of the interface CON2 is connected to the M+ signal. Pin 5 of the interface CON2 is grounded. Pin 6 of the interface CON2 is connected to the 5V signal; Pin 1 of the interface CON5 is connected to the 5V signal. Pin 2 of the interface CON5 is grounded. Pin 3 of the interface CON5 is connected to the M+ signal. Pin 4 of the interface CON5 is connected to the M- signal. Pin 5 of the interface CON5 is connected to the LED_R signal. Pin 6 of the interface CON5 is connected to the LED_G signal; Pin 1 of the interface CON6 is connected to the M- signal. Pin 2 of the interface CON6 is connected to the M+ signal.

[0031] As Figure 7As shown, the status indicator light circuit includes the indicator light LED1. The indicator light LED1 includes two optocouplers. The negative electrodes of the two optocouplers are both grounded through the resistor R7. The positive electrode of one optocoupler is connected to the LED_R signal, and the positive electrode of the other optocoupler is connected to the LED_G signal.

[0032] As Figure 8 shown, the key circuit includes the resistor R12, the switches S1 and S2. One end of the resistor R12 is connected to the MOTER_DET signal, and the other end of the resistor R12 is set to an equipotential, and the equipotential end of the resistor R12 is also grounded through the resistor R11; one ends of the switches S1 and S2 are both grounded, the other end of the switch S1 is connected to the KEY1 signal, and the other end of the switch S2 is connected to the KEY2 signal.

[0033] The main control MCU is electrically connected to the status indicator light circuit through the LED_R signal and the LED_G signal, the main control MCU is electrically connected to the charging circuit through the CHARG_DET signal and the CH_DET signal, the main control MCU is electrically connected to the MCU power supply circuit through the 3V3 signal, the main control MCU is electrically connected to the power detection circuit through the DET_EN signal and the BAT_DET signal, the main control MCU is electrically connected to the key circuit through the KEY1 signal, the KEY2 signal and the MOTER_DET signal, and the main control MCU is electrically connected to the motor drive circuit through the MOTER_B signal and the MOTER_A signal; the charging circuit is electrically connected to the MCU power supply circuit and the battery charging circuit through the BAT_7V4 signal.

[0034] The working principle of this control circuit is as follows: The battery in the battery charging circuit is connected to the charging circuit, the motor drive circuit, the power detection circuit and the MCU power supply circuit through the BAT_7V4 signal, and provides electrical energy for the entire circuit system through the battery; When it is necessary to open the umbrella, press the switch S1. The key circuit transmits through the KEY1 signal and the MOTER_DE signal (used to detect the pressing and releasing actions of the key) to the main control MCU. The main control MCU sends instructions to the motor drive circuit through the MOTER_A signal and the MOTER_B signal, and controls the operation of the motor through the motor drive circuit, so as to realize the automatic opening of the umbrella, and the green light is always on during the umbrella opening process; when it is necessary to close the umbrella, press the switch S2. The key circuit transmits through the KEY2 signal and the MOTER_DE signal (used to detect the pressing and releasing actions of the key) to the main control MCU. The main control MCU sends instructions to the motor drive circuit through the MOTER_A signal and the MOTER_B signal, and controls the operation of the motor through the motor drive circuit, so as to realize the automatic closing of the umbrella, and the green light is always on during the umbrella closing process; When the umbrella needs to be charged, the main control MCU is connected to the charging circuit through the CH_DET signal and the CHARG_DET signal. During the operation of the charging circuit, parameters such as the charging current and charging voltage are monitored and adjusted in real time, and are transmitted to the main control MCU through the CH_DET and CHARG_DET signals. The main control MCN performs more refined control based on the received charging information (for example, when the charging current is too large, the main control MCU can send instructions to the charging circuit through the CH_DET and CHARG_DET signals to adjust the charging voltage, charging current, etc.); during the charging process, the red light flashes; after being fully charged, the green light.

[0035] During the charging process (even during the use of the umbrella), the main control MCU turns on or off the power detection function through the DET_EN signal, and transmits the current signal of the power detection circuit through the BAT_DET signal at a certain time interval to continuously monitor the power data to ensure that the change of the battery power can be tracked in time.

[0036] When the MCU determines that the battery power is insufficient, the MCU will control the status indicator circuit to make the red light flash at a certain frequency to prompt the user of the low power status. According to the charging speed and the change of the battery capacity, it is judged whether the battery is close to the full charge state. When it is detected that the battery voltage / current reaches the saturation threshold, the MCU controls the charging indicator to turn green and stay on, reminding to cut off the charging circuit to prevent overcharging from damaging the battery.

[0037] Embodiment 2 This embodiment provides an umbrella, which includes an umbrella body. The umbrella body includes an umbrella surface, umbrella ribs, an opening / closing support sleeve, an umbrella rod, and a driving structure for driving the umbrella to open or close. The structure of the umbrella body can adopt the structure in the prior art, and its innovation does not lie in the structure of the umbrella body. Those skilled in the art can directly apply it according to the prior art and common general knowledge in this field without creative labor, as long as the functions of "pressing the open switch to automatically open and lock the umbrella, and pressing the close switch to automatically close and lock the umbrella" can be realized. Reference can be made to the solar umbrella disclosed in the application number 202210778204.2.

[0038] In this embodiment, the main innovation lies in the umbrella control circuit provided in the umbrella. The umbrella control circuit can be used to control the opening and closing, charging, power detection, and status indication of the umbrella body. The umbrella control circuit adopts the umbrella control circuit described in Embodiment 1.

[0039] In addition, the umbrella is also equipped with a lithium battery, which is powered by a rechargeable lithium battery with 7.4V and 280MA / H.

[0040] In the umbrella, when switch S1 (the switch for opening the umbrella) is pressed once, the umbrella automatically opens and the structure for opening the umbrella rises to the top of the umbrella and then automatically locks the motor (the structure for opening the umbrella and the structure for locking the motor can directly apply the existing technology without creative work); when switch S2 (the switch for folding the umbrella) is pressed once, the structure for opening the umbrella descends to the bottom of the umbrella and then automatically locks the motor; during the process of opening or folding the umbrella, the working indicator light will stay green (one of the optical couplers in the indicator light LED1 is working), and the red light will flash when the battery is low (the other optical coupler in the indicator light LED1 is working); the red light flashes during charging and the green light will turn on after full charging.

Claims

1. An umbrella control circuit, characterized in that, It includes a main control MCU, a charging circuit, a motor drive circuit, a battery charging circuit, a power detection circuit, an MCU power supply circuit, a status indicator circuit, and a key circuit; The main control MCU includes chip U3. The pin 2 of chip U3 is connected to the LED_R signal, the pin 3 is connected to the LED_G signal, the pin 4 is connected to the CHARG_DET signal, the pin 5 is connected to the 3V3 signal, the pin 6 is connected to the CH_DET signal, the pin 7 is connected to the DET_EN signal, the pin 9 is connected to the MOTER_DET signal, the pin 10 is connected to the BAT_DET signal, the pin 11 is connected to the MOTER_A signal, the pin 12 is grounded, the pin 13 is connected to the MOTER_B signal, and the pin 14 is connected to the KEY2 signal, and the pin 15 is connected to the KEY1 signal; The main control MCU is electrically connected to the status indicator circuit through the LED_R signal and the LED_G signal. The main control MCU is electrically connected to the charging circuit through the CHARG_DET signal and the CH_DET signal. The main control MCU is electrically connected to the MCU power supply circuit through the 3V3 signal. The main control MCU is electrically connected to the power detection circuit through the DET_EN signal and the BAT_DET signal. The main control MCU is electrically connected to the key circuit through the KEY1 signal, the KEY2 signal, and the MOTER_DET signal. The main control MCU is electrically connected to the motor drive circuit through the MOTER_B signal and the MOTER_A signal. The charging circuit is electrically connected to the MCU power supply circuit and the battery charging circuit through the BAT_7V4 signal.

2. The umbrella control circuit according to claim 1, wherein The charging circuit includes chip U4. The pin 2 of chip U4 is grounded after passing through resistor R18. The pin 3 of chip U4 is connected to the drain D of MOS transistor Q2. The source S of MOS transistor Q2 is connected to the BAT_7V4 signal. The gate G of MOS transistor Q2 is connected to the collector C of transistor Q9 after passing through resistor R1. The emitter E of transistor Q9 is grounded. A resistor R7 is also connected between the connection line of the source S of MOS transistor Q2 and the BAT_7V4 signal and the connection line of the gate G of MOS transistor Q2 and resistor R1. The pin 4 of chip U4 is grounded after passing through capacitor C7. The pin 5 of chip U4 is connected to the 5V signal after passing through inductor L1. A diode D1 is also connected between the connection line of the pin 4 of chip U4 and capacitor C7 and the connection line of the pin 5 of chip U4 and inductor L1. The pin 6 of chip U4 is connected to the 5V signal after passing through diode D2. The pin 7 of chip U4 is connected to the power supply 5V after passing through resistor R19. The pin 8 of chip U4 is connected to the CH_DET signal. The connection line of the pin 8 of chip U4 and the CH_DET signal is electrically connected to the connection line of resistor R4 and the connection line of resistor R18 and the ground wire after passing through resistor R4. It also includes a parallel combination of capacitor C9 and resistor R2. One end of resistor R2 is connected to resistor R19, and the other end of resistor R2 is connected to the base B of transistor Q9. One end of capacitor C9 is connected to resistor R19, and the other end of capacitor C9 is connected to the connection line of the emitter E of transistor Q9 and the ground wire. A capacitor C8 is also connected between the connection line of the pin 6 of chip U4 and diode D2 and the connection line of the pin 5 of chip U4 and inductor L1. The connection line of the pin 7 of chip U4 and resistor R19 is electrically connected to the connection line of diode D2 and the power supply 5V. The connection line of resistor R19 and the 5V signal is grounded successively through resistor R3 and resistor R17, and the connection line of resistor R3 and resistor R17 is connected to the CHARG_DET signal. Capacitors C10, C12, and C3 are also connected in parallel to the connection line of inductor L1 and the 5V signal, and the other ends of capacitors C10, C12, and C3 are respectively grounded.

3. The umbrella control circuit according to claim 1, characterized in that, The power detection circuit includes transistor Q7. The emitter E of transistor Q7 is connected to the BAT_7V4 signal. The collector C of transistor Q7 is grounded successively through resistor R25 and resistor R24, and the connection line of resistor R25 and resistor R24 is connected to the BAT_DET signal. The base B of transistor Q7 is connected to the collector C of transistor Q8 after passing through resistor R23. The emitter E of transistor Q8 is grounded. The base B of transistor Q8 is connected to the DET_EN signal after passing through resistor R26. A resistor R6 is connected between the connection line of the emitter E of transistor Q7 and the BAT_7V4 signal and the connection line of the base B of transistor Q7 and resistor R23.

4. The umbrella control circuit according to claim 1, characterized in that The MCU power supply circuit includes a linear voltage regulator Q1. Pin 1 of the linear voltage regulator Q1 is connected to the BAT_7V4 signal after passing through a resistor R5. Pin 2 of the linear voltage regulator Q1 is grounded. Pin 3 of the linear voltage regulator Q1 is connected to the 3V3 signal. A capacitor C2 is also connected between the connection line of pin 2 of the linear voltage regulator Q1 and the ground wire and the connection line of pin 1 of the linear voltage regulator Q1 and the resistor R5. A capacitor C4 is also connected between the connection line of pin 2 of the linear voltage regulator Q1 and the ground wire and the connection line of pin 3 of the linear voltage regulator Q1 and the 3V3 signal.

5. The umbrella control circuit according to claim 1, wherein, The motor drive circuit includes a chip U1. Pin 1 of the chip U1 is connected to the MOTER_B signal after passing through a resistor R16. Pin 2 of the chip U1 is connected to the MOTER_A signal after passing through a resistor R8. Pin 3 of the chip U1 is set to an equipotential. Pin 4 of the chip U1 is connected to the BAT_7V4 signal. Pins 5 and 6 of the chip U1 are both connected to the M+ signal. Pins 7 and 8 of the chip U1 are both connected to the M- signal.

6. The umbrella control circuit according to claim 1, wherein The battery charging circuit includes an interface TYPE-C, an interface CON1, an interface CON2, an interface CON5, and an interface CON6. Pins 1 and 6 of the interface TYPE-C are both grounded. Pins 2 and 5 of the interface TYPE-C are both connected to the 5V signal. Pin 3 of the interface TYPE-C is grounded after passing through a resistor R2. Pin 4 of the interface TYPE-C is grounded after passing through a resistor R1. Pin 2 of the interface CON1 is grounded. Pin 1 of the interface CON1 is connected to the BAT_7V4 signal. Capacitors C1, C5, and C11 are respectively connected in parallel on the connection line between pin 1 of the interface CON1 and the BAT_7V4 signal, and the other ends of C1, C5, and C11 are all grounded. Pin 1 of the interface CON2 is connected to the LED_G signal. Pin 2 of the interface CON2 is connected to the LED_R signal. Pin 3 of the interface CON2 is connected to the M- signal. Pin 4 of the interface CON2 is connected to the M+ signal. Pin 5 of the interface CON2 is grounded. Pin 6 of the interface CON2 is connected to the 5V signal. Pin 1 of the interface CON5 is connected to the 5V signal. Pin 2 of the interface CON5 is grounded. Pin 3 of the interface CON5 is connected to the M+ signal. Pin 4 of the interface CON5 is connected to the M- signal. Pin 5 of the interface CON5 is connected to the LED_R signal. Pin 6 of the interface CON5 is connected to the LED_G signal. Pin 1 of the interface CON6 is connected to the M- signal. Pin 2 of the interface CON6 is connected to the M+ signal.

7. The umbrella control circuit according to claim 1, characterized in that, The status indicator light circuit includes an indicator light LED1. The indicator light LED1 includes two optocouplers. The negative poles of the two optocouplers are both grounded after passing through a resistor R7. The positive pole of one optocoupler is connected to the LED_R signal, and the positive pole of the other optocoupler is connected to the LED_G signal.

8. The umbrella control circuit according to claim 1, wherein The button circuit includes a resistor R12, a switch S1 and a switch S2. One end of the resistor R12 is connected to the MOTER_DET signal, and the other end of the resistor R12 is set to an equipotential, and the equipotential end of the resistor R12 is also grounded through a resistor R11; one ends of the switch S1 and the switch S2 are both grounded, the other end of the switch S1 is connected to the KEY1 signal, and the other end of the switch S2 is connected to the KEY2 signal.

9. An umbrella, characterized in that, It includes an umbrella body, and a control circuit for controlling the opening and closing, charging, power detection and status indication of the umbrella body is arranged in the umbrella body. The control circuit adopts the umbrella control circuit described in any one of claims 1-8.

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