Motor control box and winch control device

Abstract

The invention relates to the technical field of motor control, in particular to a motor control box and a winch control device. The motor control box comprises a microprocessor, a wireless receiving module, a current detection circuit, a voltage detection circuit, a temperature detection circuit, a signal amplification circuit, a driving circuit, a voltage conversion circuit and a Bluetooth communication module; the microprocessor is connected with the motor; the motor is connected to power supply equipment and is powered by the power supply equipment; the wireless receiving module, the current detection circuit, the voltage detection circuit, the temperature detection circuit and the Bluetooth communication module are all connected with the microprocessor; the current detection circuit is used for collecting motor current, the voltage detection circuit is used for collecting power supply equipment voltage, and the temperature detection circuit is used for detecting motor temperature. According to the invention, electronic elements are adopted to replace relays, the size and weight of the control box are obviously reduced, the energy consumption is reduced, the operation efficiency is improved, and the microprocessor can execute complex logic, realize automatic control and be compatible with various types of direct current motors.

Description

Technical Field

[0001] This invention relates to the field of motor control technology, and in particular to a motor control box and a winch control device. Background Technology

[0002] Existing controllers for DC motors primarily consist of multiple independent units, including manual switches, mechanical relays, current fuses, temperature fuses, and limit fuses. These units are typically connected by numerous wires, resulting in a complex, large, and heavy overall structure. Relays, as the main actuators, require continuous energization of their internal coils to maintain their engaged state, thus consuming significant energy. Relays are also bulky, heavy, and their mechanical contacts are subject to wear and lifespan limitations. Furthermore, frequent switching of high currents can easily generate arcing, leading to performance degradation or even failure. Because relays require high voltage to drive their coils, the overall energy consumption of the control box remains high. Additionally, existing controllers typically only enable simple forward and reverse rotation of motors, lacking the ability to automatically execute control logic based on conditions such as current, voltage, and temperature. Summary of the Invention

[0003] To solve the above-mentioned technical problems, or at least partially solve them, the present invention provides a motor control box and a winch control device. By using electronic components to replace relays, the size and weight of the control box are significantly reduced, energy consumption is reduced, and operating efficiency is improved. The microprocessor can execute complex logic to achieve automated control and is compatible with various types of DC motors.

[0004] In a first aspect, the present invention provides a motor control box, comprising: a box body, wherein a microprocessor, a wireless receiving module, a current detection circuit, a voltage detection circuit, a temperature detection circuit, a signal amplification circuit, a drive circuit, a voltage conversion circuit, and a Bluetooth communication module are disposed within the box body; the microprocessor is connected to the motor in sequence through the signal amplification circuit and the drive circuit;

[0005] The motor is connected to a power supply device, which supplies power to the motor; the voltage conversion circuit is connected to the power supply device, which converts the voltage input by the power supply device into a preset voltage to supply power to several circuits and modules in the box.

[0006] The wireless receiving module, the current detection circuit, the voltage detection circuit, the temperature detection circuit, and the Bluetooth communication module are all connected to the microprocessor; the current detection circuit is used to collect the motor current, the voltage detection circuit is used to collect the power supply equipment voltage, and the temperature detection circuit is used to detect the motor temperature.

[0007] The microprocessor communicates with the mobile terminal's APP via the Bluetooth communication module; a manual input button is provided on the box, and the manual input button is connected to the microprocessor.

[0008] In some embodiments, the wireless receiving module includes a receiving chip U6, a transistor Q21, a transistor Q22, and a capacitor C17;

[0009] The first terminal of transistor Q21 is connected to power supply terminal V1, and the second terminal of transistor Q21 is connected to power supply terminal VCC of receiver chip U6; the first terminal of capacitor C17 is connected in series between the second terminal of transistor Q21 and power supply terminal VCC; the second terminal of capacitor C17 is grounded.

[0010] The third terminal of transistor Q21 is connected to the first terminal of transistor Q22, the second terminal of transistor Q22 is grounded, and the third terminal of transistor Q22 is connected to the enable terminal V_Sense_EN.

[0011] The receiver chip U6 is connected to the microprocessor. The receiver chip U6 receives wireless radio frequency signals and converts the wireless radio frequency signals into electrical signals that can be received by the microprocessor.

[0012] In some embodiments, the driving circuit includes a connector P1, transistors Q3, Q4, Q5, Q6, Q9, Q10, Q11, Q12, diode D1, and diode D2.

[0013] The first end of connector P1 is connected to the positive terminal BATT of the power supply equipment, and the second end of connector P1 is grounded; the first end of connector P1 is connected to the first end of transistors Q3, Q4, Q5 and Q6, and the second end of transistors Q3, Q4 and Q5 is connected to the first end of motor P2; the second end of transistors Q3, Q4 and Q5 is also connected to the first end of transistor Q9 and the first end of diode D1, and the second end of diode D1 is connected to the third end of transistor Q3;

[0014] The first terminals of transistors Q10, Q11, and Q12 are all connected to the second terminal of motor P2; the first terminals of transistors Q10, Q11, and Q12 are also connected to the second terminal of transistor Q6 and the first terminal of diode D2, and the second terminal of diode D2 is connected to the third terminal of transistor Q6.

[0015] The second terminals of transistors Q10, Q11, and Q12 are connected to the second terminal of transistor Q9.

[0016] In some embodiments, the signal amplification circuit comprises a first signal unit, a second signal unit, a third signal unit, and a fourth signal unit;

[0017] The input terminals S_IN_H of the first signal unit, S_OUT_H of the second signal unit, S_IN_L of the third signal unit, and S_OUT_L of the fourth signal unit are all connected to the microprocessor.

[0018] The output terminal IN_H of the first signal unit is connected to the third terminal of transistors Q3, Q4, and Q5; the output terminal OUT_H of the second signal unit is connected to the third terminal of transistor Q6; the output terminal IN_L of the third signal unit is connected to the third terminal of transistors Q10, Q11, and Q12; and the output terminal OUT_L of the fourth signal unit is connected to the third terminal of transistor Q9.

[0019] In some embodiments, the current detection circuit includes a sampling resistor R14 and a current detection chip U5;

[0020] The first terminal of the sampling resistor R14 is connected to transistor Q9, transistor Q10, transistor Q11 and transistor Q12 respectively, and the second terminal of the sampling resistor R14 is grounded.

[0021] The sampling terminal Sense of the current detection chip U5 is connected to the first terminal of the sampling resistor R14, and the current detection chip U5 is connected to the microprocessor.

[0022] In some embodiments, the voltage detection circuit includes transistor Q19, transistor Q20, capacitor C18, resistor R34, resistor R32, resistor R36, and voltage detection chip U4.

[0023] The first terminal of transistor Q19 is connected to the positive terminal BATT of the power supply device, and the second terminal of transistor Q19 is grounded through resistor R34 in sequence; the third terminal of transistor Q19 is connected to the first terminal of transistor Q20 through resistor R32, the second terminal of transistor Q20 is grounded, and the third terminal of transistor Q20 is connected to the enable terminal V_Sense_EN;

[0024] The detection terminal V_Sense of the voltage detection chip U4 is connected in series between the resistor R34 and the resistor R36, and the voltage detection chip U4 is connected to the microprocessor; the first terminal of the capacitor C18 is connected to the detection terminal V_Sense, and the second terminal of the capacitor C18 is grounded.

[0025] In some embodiments, the temperature detection circuit includes a temperature detection chip U3, a thermistor RT1, a thermistor RT2, a resistor R37, and a resistor R38; the temperature detection chip U3 is connected to the microprocessor.

[0026] The thermistor RT1 is connected to the power supply terminal V1 and is grounded through the resistor R38; the thermistor RT2 is connected to the power supply terminal V1 and is grounded through the resistor R37.

[0027] The temperature detection chip U3 includes a temperature detection terminal Temp_1 and a temperature detection terminal Temp_2. The temperature detection terminal Temp_1 is connected in series between the thermistor RT1 and the resistor R38, and the temperature detection terminal Temp_2 is connected in series between the thermistor RT2 and the resistor R37.

[0028] In some embodiments, the housing is further provided with an image acquisition device and a lighting device. The image acquisition device is connected to the microprocessor via the Bluetooth communication module, and the lighting device is connected to the microprocessor.

[0029] In some embodiments, the image acquisition device includes a camera interface P5, a transistor Q17, a transistor Q18, a diode D7, and a diode D10;

[0030] The first terminal of transistor Q17 is connected to power supply terminal V2. The second terminal of transistor Q17 is connected to the camera interface P5 and one terminal of diode D10, and the other terminal of diode D10 is grounded. The second terminal of transistor Q17 is connected to the first terminal of transistor Q18, the second terminal of transistor Q18 is grounded, and the third terminal of transistor Q18 is connected to enable terminal Peripheral_EN.

[0031] The camera interface P5 is connected to the transmitter BLE_TX of the Bluetooth communication module through resistor R20, and the camera interface P5 is connected to the receiver BLE_RX of the Bluetooth communication module through diode D7.

[0032] In some embodiments, the housing is further provided with a lighting device, which is connected to the microprocessor.

[0033] In a second aspect, the present invention also provides a winch control device, comprising:

[0034] A winch and a motor control box as described in the first aspect; the winch includes a motor, and the motor control box is used to control the motor.

[0035] The technical solution provided by the embodiments of the present invention has the following advantages compared with the prior art:

[0036] This invention employs a microprocessor as the control core, combined with manual input buttons, a wireless receiving module, a Bluetooth communication module, a current detection circuit, a voltage detection circuit, a temperature detection circuit, a voltage conversion circuit, a signal amplification circuit, and a drive circuit, to achieve multi-mode input, multi-parameter detection, and multi-dimensional output control. By replacing relays with electronic components, the size and weight of the control box are significantly reduced, energy consumption is lowered, and operating efficiency is improved. The microprocessor can execute complex logic to achieve automated control and is compatible with various types of DC motors, including brushed permanent magnet, brushed series, and brushless permanent magnet motors. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a structural block diagram of a motor control box provided in an embodiment of the present invention;

[0040] Figure 2 A circuit structure diagram of a wireless receiving module provided in an embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram of a driving circuit provided in an embodiment of the present invention;

[0042] Figure 4 This is a schematic diagram of a signal amplification circuit provided in an embodiment of the present invention;

[0043] Figure 5 This is a schematic diagram of a voltage detection circuit provided in an embodiment of the present invention;

[0044] Figure 6 This is a schematic diagram of a temperature detection circuit provided in an embodiment of the present invention;

[0045] Figure 7 This is a schematic diagram of the structure of an image acquisition device provided in an embodiment of the present invention;

[0046] Figure 8 This is a schematic diagram of a winch control device provided in an embodiment of the present invention.

[0047] Among them, 10. Box body; 11. Microprocessor; 12. Wireless receiving module; 13. Current detection circuit; 14. Voltage detection circuit; 15. Temperature detection circuit; 16. Signal amplification circuit; 17. Drive circuit; 18. Bluetooth communication module; 20. Voltage conversion circuit; 21. Power supply equipment; 22. Manual input button; 23. Image acquisition equipment; 24. Lighting equipment; 25. Winch; 26. Motor control box; 27. Programmable load device; 28. Limit sensor; 29. ​​Roller. Detailed Implementation

[0048] To better understand the above-mentioned objectives, features, and advantages of the present invention, the solutions of the present invention will be further described below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0049] Many specific details are set forth in the following description in order to provide a full understanding of the invention, but the invention may also be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the invention, and not all embodiments.

[0050] Figure 1 This is a structural block diagram of a motor control box provided in an embodiment of the present invention. Figure 1 As shown, the motor control box 26 includes: a box body 10, which houses a microprocessor 11, a wireless receiving module 12, a current detection circuit 13, a voltage detection circuit 14, a temperature detection circuit 15, a signal amplification circuit 16, a drive circuit 17, a voltage conversion circuit 20, and a Bluetooth communication module 18; the microprocessor 11 is connected to the motor P2 via the signal amplification circuit 16 and the drive circuit 17 in sequence.

[0051] Motor P2 is connected to power supply device 21, and power is supplied to motor P2 through power supply device 21; voltage conversion circuit is connected to power supply device 21 to convert the voltage input by power supply device 21 into a preset voltage to supply power to several circuits and modules in box 10.

[0052] The wireless receiving module 12, current detection circuit 13, voltage detection circuit 14, temperature detection circuit 15, and Bluetooth communication module 18 are all connected to the microprocessor 11; the current detection circuit 13 is used to collect the current of motor P2, the voltage detection circuit 14 is used to collect the voltage of power supply equipment 21, and the temperature detection circuit 15 is used to detect the temperature of motor P2.

[0053] The microprocessor 11 communicates with the mobile terminal's APP via Bluetooth communication module 18; a manual input button 22 is provided on the box 10, and the manual input button 22 is connected to the microprocessor 11.

[0054] Specifically, the motor control box provided in this embodiment of the invention replaces the traditional relay structure, solving the problems of large size and heavy weight of traditional motor control boxes, making the motor control box more suitable for portable devices. For example, the motor control box provided in this embodiment can be applied to a winch, thereby optimizing the portable use of the winch. Compared to the large amount of energy consumed by traditional relays when maintaining engagement, this invention can significantly reduce power loss.

[0055] By setting up a current detection circuit 13, a voltage detection circuit 14, and a temperature detection circuit 15, this embodiment of the invention can execute complex logic based on conditions such as temperature, current, and voltage, realize continuous adjustable control of multiple detection parameters, achieve intelligent action judgment, and avoid single control.

[0056] Therefore, this embodiment of the invention, by employing a microprocessor 11 as the control core, combined with a manual input button 22, a wireless receiving module 12, a Bluetooth communication module 18, a current detection circuit 13, a voltage detection circuit 14, a temperature detection circuit 15, a voltage conversion circuit, a signal amplification circuit 16, and a drive circuit 17, can achieve multi-mode input, multi-parameter detection, and multi-dimensional output control. Replacing relays with electronic components significantly reduces the size and weight of the control box, lowers system energy consumption, and improves operating efficiency. The microprocessor 11 can execute complex logic to achieve automated control. The Bluetooth communication module 18 allows users to remotely control the system via a mobile phone.

[0057] The motor control box provided in this invention is compatible with various types of DC motors, including brushed permanent magnet motors, brushed series motors, and brushless permanent magnet motors. Furthermore, as described below, the installation of a camera and lighting enhances the user's monitoring capabilities in remote environments.

[0058] In some embodiments, Figure 2 This is a circuit structure diagram of a wireless receiving module provided in an embodiment of the present invention. (In conjunction with...) Figure 1 and Figure 2The wireless receiver module 12 includes a receiver chip U6, transistors Q21 and Q22, and a capacitor C17. The first end of transistor Q21 is connected to the power supply terminal V1, and the second end of transistor Q21 is connected to the power supply terminal VCC of receiver chip U6. The first end of capacitor C17 is connected in series between the second end of transistor Q21 and the power supply terminal VCC. The second end of capacitor C17 is grounded. The third end of transistor Q21 is connected to the first end of transistor Q22, and the second end of transistor Q22 is grounded. The third end of transistor Q22 is connected to the enable terminal V_Sense_EN. Receiver chip U6 is connected to microprocessor 11. Receiver chip U6 receives wireless radio frequency signals and converts the wireless radio frequency signals into electrical signals that can be received by microprocessor 11.

[0059] Specifically, in this embodiment of the invention, a wireless receiving module 12 is provided. The wireless receiving module 12 converts radio frequency signals into electrical levels and inputs them to the microprocessor 11, thereby achieving long-distance wireless control. For example, a remote wireless controller sends radio frequency signals, which are received by the wireless receiving module 12 and then transmitted to the microprocessor 11. The microprocessor 11 receives the electrical level signals from the wireless receiving module 12 and, according to preset control logic, sends corresponding control commands, sending forward or reverse rotation commands to the drive circuit 17, thereby controlling the operation of the motor P2.

[0060] In some embodiments, Figure 3 This is a schematic diagram of a driving circuit provided in an embodiment of the present invention. Figure 1 and Figure 3 As shown, the drive circuit 17 includes a connector P1, transistors Q3, Q4, Q5, Q6, Q9, Q10, Q11, Q12, diode D1, and diode D2.

[0061] The first end of connector P1 is connected to the positive terminal BATT of power supply device 21, and the second end of connector P1 is grounded; the first end of connector P1 is connected to the first end of transistors Q3, Q4, Q5 and Q6, and the second end of transistors Q3, Q4 and Q5 is connected to the first end of motor P2; the second end of transistors Q3, Q4 and Q5 is also connected to the first end of transistor Q9 and the first end of diode D1, and the second end of diode D1 is connected to the third end of transistor Q3;

[0062] The first terminals of transistors Q10, Q11, and Q12 are all connected to the second terminal of motor P2; the first terminals of transistors Q10, Q11, and Q12 are also connected to the second terminal of transistor Q6 and the first terminal of diode D2, and the second terminal of diode D2 is connected to the third terminal of transistor Q6.

[0063] The second terminals of transistors Q10, Q11, and Q12 are connected to the second terminal of transistor Q9.

[0064] Specifically, Figure 3 The lower bridge arms (transistors Q3, Q4, Q5, and Q6) and the lower bridge arms (transistors Q9, Q10, Q11, and Q12) are shown in the figure.

[0065] An H-bridge circuit is formed, which controls the motor to achieve forward and reverse rotation.

[0066] For example, when control transistors Q3, Q4, Q5, Q10, Q11, and Q12 are turned on, and transistors Q6 and Q9 are turned off, motor P2 rotates forward; when control transistors Q3, Q4, Q5, Q10, Q11, and Q12 are turned off, and transistors Q6 and Q9 are turned on, motor P2 rotates in reverse.

[0067] Specifically, diodes D1 and D2 are installed to absorb the reverse surge voltage of motor P2 during commutation / power-off.

[0068] In some embodiments, Figure 4 This is a schematic diagram of a signal amplification circuit provided in an embodiment of the present invention. (In conjunction with...) Figure 1 , Figure 3 and Figure 4 As shown, the signal amplification circuit 16 includes a first signal unit 01, a second signal unit 02, a third signal unit 03, and a fourth signal unit 04;

[0069] The input terminals S_IN_H of the first signal unit 01, S_OUT_H of the second signal unit 01, S_IN_L of the third signal unit 03, and S_OUT_L of the fourth signal unit 04 are all connected to the microprocessor 11.

[0070] The output terminal IN_H of the first signal unit 01 is connected to the third terminal of transistors Q3, Q4 and Q5; the output terminal OUT_H of the second signal unit 02 is connected to the third terminal of transistor Q6; the output terminal IN_L of the third signal unit 03 is connected to the third terminal of transistors Q10, Q11 and Q12; and the output terminal OUT_L of the fourth signal unit 04 is connected to the third terminal of transistor Q9.

[0071] For example, such as Figure 4As shown, the first signal unit 01 includes transistors Q1 and Q7, resistors R1, R3, R21, and R16. Specifically, the first terminal of transistor Q1 is connected to the power supply terminal V2, and the second terminal of transistor Q1 is connected to the output terminal IN_H through resistor R16; the third terminal of transistor Q1 is connected to the first terminal of transistor Q7 through resistor R1, the second terminal of transistor Q7 is grounded, the third terminal of transistor Q7 is connected to the input terminal S_IN_H through resistor R3, the first terminal of resistor R21 is connected in series between the third terminal of transistor Q7 and resistor R3, and the second terminal of resistor R21 is grounded.

[0072] Continue as Figure 4 As shown, the second signal unit 02 includes transistors Q2 and Q8, resistors R2, R4, R22, and R23. Specifically, the first terminal of transistor Q2 is connected to the power supply terminal V2, and the second terminal of transistor Q2 is connected to the output terminal OUT H through resistor R22; the third terminal of transistor Q2 is connected to the first terminal of transistor Q8 through resistor R2, the second terminal of transistor Q8 is grounded, the third terminal of transistor Q8 is connected to the input terminal S OUT H through resistor R4, the first terminal of resistor R23 is connected in series between the third terminal of transistor Q8 and resistor R4, and the second terminal of resistor R23 is grounded.

[0073] Continue as Figure 4 As shown, the third signal unit 02 includes transistors Q13 and Q15, resistors R7, R12, R17, and R24. Specifically, the first terminal of transistor Q13 is connected to the positive terminal BATT of the power supply device 21, and the second terminal of transistor Q13 is connected to the output terminal IN_L through resistor R7; the third terminal of transistor Q13 is connected to the first terminal of transistor Q15 through resistor R12, the second terminal of transistor Q15 is grounded, the third terminal of transistor Q15 is connected to the input terminal S_IN_L through resistor R15, the first terminal of resistor R24 ​​is connected in series between the third terminal of transistor Q15 and resistor R17, and the second terminal of resistor R24 ​​is grounded.

[0074] Continue as Figure 4 As shown, the fourth signal unit 02 includes transistors Q14 and Q16, resistors R8, R13, R18, and R26. Specifically, the first terminal of transistor Q14 is connected to the positive terminal BATT of the power supply device 21, and the second terminal of transistor Q14 is connected to the output terminal OUT_L through resistor R8; the third terminal of transistor Q14 is connected to the first terminal of transistor Q16 through resistor R13, the second terminal of transistor Q16 is grounded, the third terminal of transistor Q16 is connected to the input terminal S_OUT_L through resistor R18, the first terminal of resistor R26 is connected in series between the third terminal of transistor Q15 and resistor R17, and the second terminal of resistor R26 is grounded.

[0075] In some embodiments, combined with Figure 1 and Figure 3 The current detection circuit 13 includes a sampling resistor R14 and a current detection chip U5; the first end of the sampling resistor R14 is connected to transistors Q9, Q10, Q11 and Q12 respectively, and the second end of the sampling resistor R14 is grounded; the sampling terminal Sense of the current detection chip U5 is connected to the first end of the sampling resistor R14, and the current detection chip U5 is connected to the microprocessor 11.

[0076] Specifically, by setting a sampling resistor R14, when current flows through R14, the voltage across the sampling resistor R14 is obtained by the current detection chip U5 and the motor P2 current is calculated and transmitted to the microprocessor 11, thereby the microprocessor 11 obtains the motor P2 current.

[0077] In some embodiments, Figure 5 This is a schematic diagram of a voltage detection circuit provided in an embodiment of the present invention. (Combined with...) Figure 1 and Figure 5 The voltage detection circuit 14 includes transistor Q19, transistor Q20, capacitor C18, resistor R34, resistor R32, resistor R36 and voltage detection chip U4;

[0078] The first terminal of transistor Q19 is connected to the positive terminal BATT of power supply device 21. The second terminal of transistor Q19 is grounded through resistor R34 and resistor R34 in sequence. The third terminal of transistor Q19 is connected to the first terminal of transistor Q20 through resistor R32. The second terminal of transistor Q20 is grounded. The third terminal of transistor Q20 is connected to the enable terminal V_Sense_EN.

[0079] The detection terminal V_Sense of the voltage detection chip U4 is connected in series between resistors R34 and R36, and the voltage detection chip U4 is connected to the microprocessor 11; the first end of capacitor C18 is connected to the detection terminal V_Sense, and the second end of capacitor C18 is grounded.

[0080] Specifically, the real-time voltage of the power supply device 21 is obtained through the voltage detection chip U4 and transmitted to the microprocessor 11. The microprocessor 11 obtains the real-time voltage of the power supply device 21 and thus determines the load state of the motor P2 based on the real-time voltage.

[0081] In some embodiments, Figure 6 This is a schematic diagram of a temperature detection circuit provided in an embodiment of the present invention. (In conjunction with...) Figure 1 and Figure 6 The temperature detection circuit 15 includes a temperature detection chip U3, a thermistor RT1, a thermistor RT2, a resistor R37, and a resistor R38; the temperature detection chip U3 is connected to the microprocessor 11.

[0082] Thermistor RT1 is connected to the power supply terminal V1 and is grounded through resistor R38; thermistor RT2 is connected to the power supply terminal V1 and is grounded through resistor R37.

[0083] The temperature detection chip U3 includes a temperature detection terminal Temp_1 and a temperature detection terminal Temp_2. The temperature detection terminal Temp_1 is connected in series between the thermistor RT1 and the resistor R38, and the temperature detection terminal Temp_2 is connected in series between the thermistor RT2 and the resistor R37.

[0084] Specifically, in this embodiment, a dual-channel temperature monitoring system is used, consisting of thermistors RT1 and RT2, and resistors R37 and R38, to monitor the motor temperature. The microprocessor 11 can then determine whether to stop the motor P2 based on the acquired motor temperature.

[0085] In some embodiments, such as Figure 1 As shown, an image acquisition device 23 is also provided on the box 10. The image acquisition device 23 is connected to the microprocessor 11 via a Bluetooth communication module 18.

[0086] Specifically, the image acquisition device 23 transmits photo data via Bluetooth, providing real-time images of the motor P2 in operation.

[0087] In some embodiments, Figure 7 This is a schematic diagram of an image acquisition device provided in an embodiment of the present invention. (In conjunction with...) Figure 1 and Figure 7 The image acquisition device 23 includes a camera interface P5, a transistor Q17, a transistor Q18, a diode D7, and a diode D10;

[0088] The first terminal of transistor Q17 is connected to the power supply terminal V2. The second terminal of transistor Q17 is connected to the camera interface P5 and one end of diode D10, and the other end of diode D10 is grounded. The second terminal of transistor Q17 is connected to the first terminal of transistor Q18, and the second terminal of transistor Q18 is grounded. The third terminal of transistor Q18 is connected to the enable terminal Peripheral_EN.

[0089] The camera interface P5 is connected to the transmitter BLE_TX of the Bluetooth communication module 18 through resistor R20, and the camera interface P5 is connected to the receiver BLE_RX of the Bluetooth communication module 18 through diode D7.

[0090] Therefore, the image acquisition device 23 can capture real-time images of motor P2 running and transmit the real-time images to the microprocessor 11 via the Bluetooth communication module 18. When the Bluetooth communication module 18 is connected to the APP of the user's mobile terminal, the real-time images can also be transmitted to the APP of the user's mobile terminal, so that the user can obtain real-time images of motor P2 running.

[0091] In some embodiments, such as Figure 1 As shown, the housing 10 is also equipped with a lighting device 24 connected to the microprocessor 11. Specifically, the lighting device 24 can be an LED light. When the image acquisition device 23 acquires images, the LED light is turned on to provide supplementary lighting or assist in video recording.

[0092] In some embodiments, Figure 8 This is a schematic diagram of a winch control device provided in an embodiment of the present invention. Figure 8 As shown, the winch control device includes a winch and a motor control box 26 as described in the above embodiment; the winch 25 includes a motor P2, and the motor control box 26 is used to control the motor P2.

[0093] In some embodiments, such as Figure 8 As shown, the winch control device includes a power supply device 21 and a programmable load device 27. The power supply device 21 supplies power to the motor P2, and the programmable load device 27 is used to adjust the upper limit of the load of the winch 25.

[0094] In some embodiments, such as Figure 1 As shown, a limit sensor 28 is provided on the winch 25. The limit sensor 28 is connected to the microprocessor 11. The limit sensor 28 is used to detect the mechanical limit position of the winch 25. When the mechanical limit position is triggered, the microprocessor 11 outputs a stop signal to the motor P2.

[0095] Specifically, the limit sensor 28 is attached to the periphery of the running path of the drum 29 (such as the winch bracket, the end of the drum, etc., which can be installed according to actual needs) so that when the cable in the drum 29 reaches the limit position, it can directly touch the trigger end of the limit sensor 28, thereby sending a trigger signal to the microprocessor 11. The microprocessor 11 outputs a stop signal to the motor P2 to control the motor to stop running, thereby realizing the forced stop protection of the winch overwinding / overunwinding.

[0096] In some embodiments, such as Figure 1 As shown, the winch 25 also includes a drum 29, and the motor P2 is connected to the drum 29;

[0097] A speed sensor is installed on the drum 29. Figure 1(Not shown in the image) The speed sensor is connected to the microprocessor 11. When the speed of the drum 29 reaches the preset speed, the microprocessor 11 outputs a reverse signal to the motor P2 to control the motor P2 to reverse and release the winch load.

[0098] Specifically, when the winch load becomes uncontrolled and causes the drum 29 to rotate abnormally, the direction of the pulling force is adjusted by reversing the motor P2. This not only prevents the equipment from being damaged due to overspeed, but also reduces the safety risks caused by uncontrolled load.

[0099] In some embodiments, such as Figure 1 As shown, when the power supply voltage is lower than the preset voltage and / or the motor current is greater than the preset current, the microprocessor 11 outputs a reverse signal to the motor P2 to control the motor P2 to reverse and release the winch load.

[0100] Specifically, the greater the winch's pulling force, the heavier the motor load, and the greater the corresponding motor current. By detecting the motor current, the current actual pulling force is calculated. When the motor current reaches the preset current, it indicates that the load pulling force exceeds the winch's safe load limit. The microprocessor 11 then outputs a reverse signal to the motor P2 to prevent the winch from being overloaded.

[0101] Specifically, when the voltage of the power supply equipment is lower than the preset voltage, the motor power will be abnormal (such as jamming or insufficient torque) when the voltage is insufficient. Continuing to pull the load may cause the motor to "stagnate and burn out" or even damage the power supply equipment. By reversing the motor to release the load tension, it can not only avoid damage to the power supply equipment and motor due to overload, but also prevent the cable from breaking due to continuous tension.

[0102] The terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0103] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention is not limited to the specific combination of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the foregoing inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions as those in the present invention.

Claims

1. A motor control box, characterized in that, include: The housing contains a microprocessor, a wireless receiving module, a current detection circuit, a voltage detection circuit, a temperature detection circuit, a signal amplification circuit, a drive circuit, a voltage conversion circuit, and a Bluetooth communication module; the microprocessor is connected to the motor sequentially through the signal amplification circuit and the drive circuit. The motor is connected to a power supply device, and power is supplied to the motor through the power supply device. The voltage conversion circuit is connected to the power supply device and converts the voltage input by the power supply device into a preset voltage to supply power to several circuits and modules in the box. The wireless receiving module, the current detection circuit, the voltage detection circuit, the temperature detection circuit, and the Bluetooth communication module are all connected to the microprocessor; the current detection circuit is used to collect the motor current, the voltage detection circuit is used to collect the power supply equipment voltage, and the temperature detection circuit is used to detect the motor temperature. The microprocessor communicates with the mobile terminal's APP via the Bluetooth communication module; a manual input button is provided on the box, and the manual input button is connected to the microprocessor.

2. The motor control box according to claim 1, characterized in that, The wireless receiving module includes a receiving chip U6, a transistor Q21, a transistor Q22, and a capacitor C17; The first terminal of transistor Q21 is connected to power supply terminal V1, and the second terminal of transistor Q21 is connected to power supply terminal VCC of receiver chip U6; the first terminal of capacitor C17 is connected in series between the second terminal of transistor Q21 and power supply terminal VCC; the second terminal of capacitor C17 is grounded. The third terminal of transistor Q21 is connected to the first terminal of transistor Q22, the second terminal of transistor Q22 is grounded, and the third terminal of transistor Q22 is connected to the enable terminal V_Sense_EN. The receiver chip U6 is connected to the microprocessor. The receiver chip U6 receives wireless radio frequency signals and converts the wireless radio frequency signals into electrical signals that can be received by the microprocessor.

3. The motor control box according to claim 1, characterized in that, The drive circuit includes connector P1, motor P2, transistor Q3, transistor Q4, transistor Q5, transistor Q6, transistor Q9, transistor Q10, transistor Q11, transistor Q12, diode D1, and diode D2. The first end of connector P1 is connected to the positive terminal BATT of the power supply equipment, and the second end of connector P1 is grounded; the first end of connector P1 is connected to the first end of transistors Q3, Q4, Q5 and Q6, and the second end of transistors Q3, Q4 and Q5 is connected to the first end of motor P2; the second end of transistors Q3, Q4 and Q5 is also connected to the first end of transistor Q9 and the first end of diode D1, and the second end of diode D1 is connected to the third end of transistor Q3; The first terminals of transistors Q10, Q11, and Q12 are all connected to the second terminal of motor P2; the first terminals of transistors Q10, Q11, and Q12 are also connected to the second terminal of transistor Q6 and the first terminal of diode D2, and the second terminal of diode D2 is connected to the third terminal of transistor Q6. The second terminals of transistors Q10, Q11, and Q12 are connected to the second terminal of transistor Q9.

4. The motor control box according to claim 3, characterized in that, The signal amplification circuit includes a first signal unit, a second signal unit, a third signal unit, and a fourth signal unit; The input terminals S_IN_H of the first signal unit, S_OUT_H of the second signal unit, S_IN_L of the third signal unit, and S_OUT_L of the fourth signal unit are all connected to the microprocessor. The output terminal IN_H of the first signal unit is connected to the third terminal of transistors Q3, Q4, and Q5; the output terminal OUT_H of the second signal unit is connected to the third terminal of transistor Q6; the output terminal IN_L of the third signal unit is connected to the third terminal of transistors Q10, Q11, and Q12; and the output terminal OUT_L of the fourth signal unit is connected to the third terminal of transistor Q9.

5. The motor control box according to claim 3, characterized in that, The current detection circuit includes a sampling resistor R14 and a current detection chip U5; The first terminal of the sampling resistor R14 is connected to transistor Q9, transistor Q10, transistor Q11 and transistor Q12 respectively, and the second terminal of the sampling resistor R14 is grounded. The sampling terminal Sense of the current detection chip U5 is connected to the first terminal of the sampling resistor R14, and the current detection chip U5 is connected to the microprocessor.

6. The motor control box according to claim 1, characterized in that, The voltage detection circuit includes transistor Q19, transistor Q20, capacitor C18, resistor R34, resistor R32, resistor R36, and voltage detection chip U4; The first terminal of transistor Q19 is connected to the positive terminal BATT of the power supply device, and the second terminal of transistor Q19 is grounded through resistor R34 in sequence; the third terminal of transistor Q19 is connected to the first terminal of transistor Q20 through resistor R32, the second terminal of transistor Q20 is grounded, and the third terminal of transistor Q20 is connected to the enable terminal V_Sense_EN; The detection terminal V_Sense of the voltage detection chip U4 is connected in series between the resistor R34 and the resistor R36, and the voltage detection chip U4 is connected to the microprocessor; the first terminal of the capacitor C18 is connected to the detection terminal V_Sense, and the second terminal of the capacitor C18 is grounded.

7. The motor control box according to claim 1, characterized in that, The temperature detection circuit includes a temperature detection chip U3, a thermistor RT1, a thermistor RT2, a resistor R37, and a resistor R38; the temperature detection chip U3 is connected to the microprocessor. The thermistor RT1 is connected to the power supply terminal V1 and is grounded through the resistor R38; the thermistor RT2 is connected to the power supply terminal V1 and is grounded through the resistor R37. The temperature detection chip U3 includes a temperature detection terminal Temp_1 and a temperature detection terminal Temp_2. The temperature detection terminal Temp_1 is connected in series between the thermistor RT1 and the resistor R38, and the temperature detection terminal Temp_2 is connected in series between the thermistor RT2 and the resistor R37.

8. The motor control box according to claim 1, characterized in that, The box is also equipped with an image acquisition device and a lighting device; the image acquisition device is connected to the microprocessor via the Bluetooth communication module, and the lighting device is connected to the microprocessor.

9. The motor control box according to claim 8, characterized in that, The image acquisition device includes a camera interface P5, a transistor Q17, a transistor Q18, a diode D7, and a diode D10; The first terminal of transistor Q17 is connected to power supply terminal V2. The second terminal of transistor Q17 is connected to the camera interface P5 and one terminal of diode D10, and the other terminal of diode D10 is grounded. The second terminal of transistor Q17 is connected to the first terminal of transistor Q18, the second terminal of transistor Q18 is grounded, and the third terminal of transistor Q18 is connected to enable terminal Peripheral_EN. The camera interface P5 is connected to the transmitter BLE_TX of the Bluetooth communication module through resistor R20, and the camera interface P5 is connected to the receiver BLE_RX of the Bluetooth communication module through diode D7.

10. A winch control device, characterized in that, include: A winch and a motor control box as described in any one of claims 1-9; the winch includes a motor, and the motor control box is used to control the motor.

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