A power supply control circuit, snow removal equipment and its motor control system
By introducing a startup detection circuit and controller into the power supply control circuit, the problem of component damage caused by accidental power-on was solved, the safety and reliability of the circuit were improved, and the fault diagnosis capability was enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN HANYANG TECHNOLOGY CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-08-04
AI Technical Summary
Existing power supply control circuits are prone to accidental power-on during startup, leading to damage to switching components and power modules, poor safety, and inability to promptly diagnose the cause of the fault.
Design a power supply control circuit, including a main power supply circuit, a start-up detection circuit, and a controller. The start-up detection circuit detects the electrical equipment, and the controller compares the detection signal with the detection voltage signal to control whether the main power supply circuit supplies power, thus preventing accidental power-on.
It improves the safety and reliability of the power supply control circuit, protects other components in the circuit, prevents damage caused by accidental power-on, and enhances fault diagnosis capabilities.
Smart Images
Figure CN224596157U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of control, and in particular to a power supply control circuit, a snow removal device and its motor control system. Background Technology
[0002] Snow removal equipment is gradually developing towards automation and intelligence. The flexible adjustment of the snow throwing direction is a key factor in improving operational efficiency and environmental adaptability. Therefore, the motor module of snow removal equipment usually includes two drive components: a pitch motor module and a yaw motor module. The pitch motor module adjusts the vertical tilt angle of the snow throwing tube, and the yaw motor module adjusts the horizontal direction of the snow throwing tube. Combined with the control system of the snow removal equipment, the snow throwing path can be adjusted.
[0003] However, existing power supply control circuits directly supply power to the motor module upon startup without checking for circuit faults, posing a risk of accidental power-on and potential damage to switching components and the power module. Furthermore, the inability to promptly determine the cause of a circuit fault results in poor circuit safety. Summary of the Invention
[0004] This utility model provides a power supply control circuit, a snow removal device and its motor control circuit to solve the problems of existing power supply control circuits having the risk of accidental power-on and poor safety.
[0005] To achieve the above objectives, in one embodiment, a power supply control circuit is provided, comprising: Main power supply circuit, start-up detection circuit, and controller; The power output terminal of the start-up detection circuit and the power output terminal of the main power supply circuit are both used to connect to the power input terminal of the electrical equipment, and output detection signals and power supply signals to the electrical equipment respectively. The controller is connected to the control input terminal of the main power supply circuit and is used to output control signals; the controller is also connected to the signal output terminal of the start detection circuit and is used to collect detection voltage signals.
[0006] In one embodiment, the controller is connected to the signal output terminal of the main power supply circuit and is used to output the acquired power supply voltage signal.
[0007] In one embodiment, it includes a comparison module and a filtering module whose outputs and inputs are connected in sequence; The input terminal of the comparison module is connected to the line between the power supply output terminal of the main power supply circuit and the power supply input terminal of the electrical equipment; the controller is connected to the output terminal of the filter module and is used to collect current values.
[0008] In one embodiment, the main power supply circuit includes: A first power supply module and a first switch module, wherein the output terminal of the first power supply module is connected to the input terminal of the first switch module, and the first output terminal of the first switch module serves as the power supply output terminal of the main power supply circuit; the control terminal of the first switch module serves as the control input terminal of the main power supply circuit.
[0009] In one embodiment, the start-up detection circuit includes: The second power supply module and the current limiting module are connected. The output terminal of the second power supply module is connected to the input terminal of the current limiting module. The output terminal of the current limiting module serves as the power supply output terminal and the signal output terminal of the startup detection circuit.
[0010] In one embodiment, the start-up detection circuit includes: The system comprises a second power supply module, a current limiting module, and a reverse protection module. The output terminal of the second power supply module is connected to the input terminal of the current limiting module. One output terminal of the current limiting module serves as the signal output terminal of the startup detection circuit. The other output terminal of the current limiting module is connected to the input terminal of the reverse protection module. The output terminal of the reverse protection module serves as the power supply output terminal of the startup detection circuit.
[0011] In one embodiment, the first switching module includes a first switch and a step-down element connected in sequence between the output and input. The output terminal of the step-down element serves as the signal output terminal, and the input terminal of the first switch serves as the input terminal of the first switching module. Alternatively, the first switch module may include a first switch and a voltage divider circuit, with the two ends of the voltage divider circuit connected to the first switch and ground respectively, the voltage divider output terminal serving as the signal output terminal, and the input terminal of the first switch serving as the input terminal of the first switch module.
[0012] In one embodiment, the power supply control circuit further includes: The motor interface module is connected to the power output terminal of the main power supply circuit, and the controller is electrically connected to the motor interface module.
[0013] In one embodiment, a motor control system for a snow removal device is provided, including two power supply control circuits as described above; The power output terminals of the start-up detection circuit and the main power supply circuit of one of the power supply control circuits are both used to connect to the power input terminal of the yaw motor module; the power output terminals of the start-up detection circuit and the main power supply circuit of the other power supply control circuit are both used to connect to the power input terminal of the pitch motor module. In one embodiment, a snow removal device is provided, including a snow throwing pipe, a yaw motor module, a pitch motor module, and a motor control system for the snow removal device described above.
[0014] The aforementioned power supply control circuit, snow removal equipment, and motor control system include a main power supply circuit, a start-up detection circuit, and a controller in the power supply control circuit. Before the main power supply circuit starts, a start-up detection circuit detects the electrical equipment. The controller compares the detection signal and the detection voltage signal to determine whether the main power supply circuit should supply power to the equipment, preventing the switching devices or power modules from burning out due to power-on immediately upon startup. This protects the safety of other components in the power supply control circuit and improves the safety and reliability of the power supply control circuit. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the power supply control circuit in one embodiment of the present invention; Figure 2 This is a schematic diagram of the power supply control circuit in one embodiment of the present invention; Figure 3 This is a schematic diagram of the power supply control circuit in one embodiment of the present invention; Figure 4 This is a schematic diagram of the first switch module in one embodiment of the present invention; Figure 5 This is a schematic diagram of the first switch module in one embodiment of the present invention.
[0017] Reference numerals: 1. Main power supply circuit; 11. First power module; 12. First switch module; 121. First switch; 122. Step-down component; 123. Voltage divider circuit; 2. Start-up detection circuit; 21. Second power module; 22. Current limiting module; 23. Reverse protection module; 3. Controller; 4. Motor interface module; 5. Comparison module; 6. Filtering module; 7. Electrical equipment; 9. Motor body; P1. Power supply output terminal of start-up detection circuit 2; P2. Signal output terminal of start-up detection circuit 2; L1. Control input terminal of main power supply circuit 1; L2. Power supply output terminal of main power supply circuit 1; L3. Signal output terminal of main power supply circuit 1. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.
[0019] It should be understood that this invention can be embodied in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of this invention to those skilled in the art. In the drawings, for clarity, the dimensions of layers and regions, as well as their relative dimensions, may be exaggerated. The same reference numerals denote the same elements throughout.
[0020] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this utility model, the first element, component, area, layer, or portion discussed below may be referred to as the second element, component, area, layer, or portion.
[0021] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein for convenience of description to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, then the element or feature described as “below,” “under,” or “below” other elements or features will be oriented “above” other elements or features. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or otherwise) and the spatial descriptive terms used herein will be interpreted accordingly.
[0022] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “including,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.
[0023] To fully understand this utility model, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by this utility model. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.
[0024] In one embodiment, such as Figure 1 As shown, a power supply control circuit is provided, the power supply control circuit including: Main power supply circuit 1, start-up detection circuit 2, and controller 3; The power output terminal P1 of the start-up detection circuit 2 and the power output terminal L2 of the main power supply circuit 1 are both used to connect to the power input terminal of the electrical equipment 7, and output detection signals and power supply signals to the electrical equipment 7 respectively. The controller 3 is connected to the control input terminal L1 of the main power supply circuit 1 for outputting control signals; the controller 3 is also connected to the signal output terminal P2 of the start detection circuit 2 for acquiring detection voltage signals.
[0025] The controller 3 is used to output a control signal to the control input terminal L1 of the main power supply circuit 1 by comparing the detection signal and the detection voltage signal, thereby controlling the main power supply circuit 1 to be turned on.
[0026] The working process of the above power supply control circuit is as follows: Before the main power supply circuit 1 is started, the power output terminal P1 of the start detection circuit 2 outputs a detection signal to the power input terminal of the electrical device 7, forming a loop in the entire power supply control circuit. The controller 3 receives the detection voltage signal through the signal output terminal P2 of the start detection circuit 2. After receiving the detection voltage signal, the controller 3 compares the detection signal with the detection voltage signal. When the difference between the two is within a preset threshold, the controller 3 sends a control signal to the main power supply circuit 1 through the control input terminal L1 of the main power supply circuit 1 to turn on the main power supply circuit 1. Then, the power output terminal L2 of the main power supply circuit 1 outputs a power supply signal to the electrical device 7. When the difference between the detection signal and the detection voltage signal is not within the preset threshold, it indicates that the circuit has malfunctioned. The controller 3 is prohibited from sending control signals to the main power supply circuit 1 through the control input terminal L1 of the main power supply circuit 1. At the same time, the controller 3 sends a fault alarm to the host computer.
[0027] Understandably, the electrical device 7 is a pitch motor module or a yaw motor module; the detection signal is a fixed value, pre-input into the controller 3, specifically 3.3V in this embodiment; the detection voltage signal is a real-time measured value; the preset threshold is ±0.1V. The controller 3 can be an STM32F103 or GD32F103, etc., and can be adjusted according to actual needs, all within the scope of protection of this application.
[0028] In this embodiment, the power supply control circuit includes a main power supply circuit 1, a start-up detection circuit 2, and a controller 3. The start-up detection circuit 2 detects the electrical equipment 7, and the controller 3 makes a judgment. Only when the conditions are met will the main power supply circuit 1 be turned on to supply power to the electrical equipment 7. Pre-start detection prevents accidental power-on, protects the safety of other components in the power supply control circuit, and improves the safety and reliability of the power supply control circuit.
[0029] In one embodiment, such as Figure 1 As shown, the controller 3 is connected to the signal output terminal L3 of the main power supply circuit 1 and is used to output the acquired power supply voltage signal.
[0030] After the main power supply circuit 1 is started, the controller 3 collects the power supply voltage signal through the signal output terminal L3 of the main power supply circuit 1 to determine whether the main power supply circuit 1 is conducting normally.
[0031] The working process of the above power supply control circuit is as follows: Before the main power supply circuit 1 is started, the power output terminal P1 of the start detection circuit 2 outputs a detection signal to the power input terminal of the electrical device 7, forming a loop in the entire power supply control circuit. The controller 3 receives the detection voltage signal through the signal output terminal P2 of the start detection circuit 2. After receiving the detection voltage signal, the controller 3 compares the detection signal with the detection voltage signal. When the difference between the two is within a preset threshold, the controller 3 sends a control signal to the main power supply circuit 1 through the control input terminal L1 of the main power supply circuit 1 to turn on the main power supply circuit 1. Then, the power output terminal L2 of the main power supply circuit 1 outputs a power supply signal to the electrical device 7. When the difference between the detection signal and the detection voltage signal is not within the preset threshold, it indicates that the circuit has malfunctioned. The controller 3 is prohibited from sending control signals to the main power supply circuit 1 through the control input terminal L1 of the main power supply circuit 1. At the same time, the controller 3 sends a fault alarm to the host computer.
[0032] After the main power supply circuit 1 is started, the controller 3 collects the power supply voltage signal through the signal output terminal L3 of the main power supply circuit 1, compares it with the power supply signal, and determines whether the main power supply circuit 1 is conducting normally.
[0033] In this embodiment, the power supply control circuit includes a main power supply circuit 1, a start-up detection circuit 2, and a controller 3. The start-up detection circuit 2 detects the electrical device 7, and the controller 3 makes a judgment. Only when the conditions are met will the main power supply circuit 1 be turned on to supply power to the electrical device 7. Pre-start detection prevents accidental power-on and protects the safety of other components in the power supply control circuit, improving the safety and reliability of the power supply control circuit. After start-up, the controller 3 collects the power supply voltage signal through the signal output terminal L3 of the main power supply circuit 1. By comparing the power supply signal and the power supply voltage signal, it determines whether the main power supply circuit 1 is conducting normally, avoiding problems such as switching transistor breakdown, power outage, and system malfunction due to the lack of a feedback mechanism.
[0034] In one embodiment, such as Figure 1 As shown, it also includes: a comparison module 5 and a filtering module 6 whose output and input are connected in sequence; The input terminal of the comparison module 5 is connected to the line between the power output terminal L2 of the main power supply circuit 1 and the power input terminal of the electrical device 7 (i.e., the power input line); the controller 3 is connected to the output terminal of the filter module 6 and is used to collect the current value.
[0035] The working process of the above power supply control circuit is as follows: After the current signal of the power input line is amplified by the comparison module 5, it is output to the filtering module 6. The filtering module 6 filters the amplified current signal and outputs it to the analog-to-digital conversion interface of the controller 3. After receiving the filtered current signal, controller 3 converts the current signal from an analog signal to a digital signal to obtain the current value. Then, based on a preset current threshold, it determines whether a fault has occurred. When the current value is within the preset current threshold range, no fault has occurred; when the current value exceeds the preset current threshold range, a fault has occurred. At this time, controller 3 sends a control signal to the control input terminal L1 of the main power supply circuit 1 to control the main power supply circuit 1 to shut down, cutting off the power supply to the electrical equipment 7, and simultaneously reporting the fault information to the host computer.
[0036] In this embodiment, a comparison module 5 and a filtering module 6 are set in the power supply control circuit. Current signals are collected on the power input line, processed by the comparison module 5 and the filtering module 6, and then transmitted to the controller 3. Simultaneously, the power supply voltage signal and the current value of the power input line are collected to detect the power supply status and motor current, respectively. The controller 3 then determines whether a fault has occurred. In the event of a fault, the power supply signal to the main power supply circuit 1 is promptly cut off, protecting the safety of other components in the power supply control circuit and improving the electrical safety, operational stability, and fault diagnosis capability of the power supply control circuit.
[0037] In one embodiment, such as Figure 1 As shown, the main power supply circuit 1 includes: The first power supply module 11 and the first switch module 12 are connected. The output terminal of the first power supply module 11 is connected to the input terminal of the first switch module 12. The first output terminal of the first switch module 12 serves as the power supply output terminal L2 of the main power supply circuit 1. The control terminal of the first switch module 12 serves as the control input terminal L1 of the main power supply circuit 1.
[0038] The power supply signal output by the first power module 11 is 24V, which can also be adjusted according to actual needs, and all of these are within the protection scope of this application.
[0039] The working process of the above power supply control circuit is as follows: The power output terminal P1 of the start detection circuit 2 outputs a detection signal to the power input terminal of the electrical equipment 7, forming a loop in the entire power supply control circuit. The controller 3 receives the detection voltage signal through the signal output terminal P2 of the start detection circuit 2. After receiving the detection voltage signal, the controller 3 compares the detection signal with the detection voltage signal. When the difference between the two is within a preset threshold, the controller 3 sends a control signal to the control terminal of the first switch module 12 through the control input terminal L1 of the main power supply circuit 1. The first switch module 12 is turned on, so that the output terminal of the first power module 11 outputs a power supply signal to the electrical device 7 through the first output terminal of the first switch module 12. At the same time, the controller 3 collects the power supply voltage signal through the signal output terminal L3 of the main power supply circuit 1. When the difference between the detection signal and the detection voltage signal is not within the preset threshold, it indicates that the circuit has malfunctioned. The controller 3 is prohibited from sending control signals to the first switch module 12 through the control input terminal L1 of the main power supply circuit 1. At the same time, the controller 3 sends a power fault alarm to the host computer.
[0040] In this embodiment, a first power module 11 and a first switch module 12 are provided in the main power supply circuit 1. The controller 3 controls the on / off state of the first switch module 12. The start-up detection circuit 2 detects the electrical device 7, and the controller 3 makes a judgment. Only when the conditions are met will the main power supply circuit 1 be turned on to supply power to the electrical device 7. Pre-start detection prevents accidental power-on, protects the safety of other components in the power supply control circuit, and improves the safety and reliability of the power supply control circuit.
[0041] In one embodiment, such as Figure 2 As shown, the start-up detection circuit 2 includes: The second power module 21 and the current limiting module 22 are connected. The output terminal of the second power module 21 is connected to the input terminal of the current limiting module 22. The output terminal of the current limiting module 22 serves as the power supply output terminal P1 and the signal output terminal P2 of the startup detection circuit 2.
[0042] The current limiting module 22 can be a single resistor or multiple resistors connected in series, and can be adjusted as needed. Since the second power supply module 21 is a low-power power supply, the power generated by the current limiting module 22 will not exceed the rated power, thus protecting the second power supply module 21.
[0043] The working process of the above power supply control circuit is as follows: The second power module 21 outputs a detection signal to the power input terminal of the electrical device 7 through the current limiting module 22, forming a loop in the entire power supply control circuit. The second power module 21 also outputs a detection voltage signal to the signal output terminal P2 of the start detection circuit 2 through the current limiting module 22, and then outputs the detection voltage signal to the controller 3. After receiving the detection voltage signal, the controller 3 compares the detection signal with the detection voltage signal. When the difference between the two is within a preset threshold, the controller 3 sends a control signal to the control terminal of the first switch module 12 through the control input terminal L1 of the main power supply circuit 1. The first switch module 12 is turned on, so that the output terminal of the first power module 11 outputs a power supply signal to the electrical device 7 through the first output terminal of the first switch module 12. At the same time, the controller 3 collects the power supply voltage signal through the signal output terminal L3 of the main power supply circuit 1. When the difference between the detection signal and the detection voltage signal is not within the preset threshold, it indicates that the circuit has malfunctioned. The controller 3 is prohibited from sending control signals to the first switch module 12 through the control input terminal L1 of the main power supply circuit 1. At the same time, the controller 3 sends a power fault alarm to the host computer.
[0044] In this embodiment, a second power supply module 21 and a current limiting module 22 are configured in the startup detection circuit 2. A detection signal is output from the output terminal of the second power supply module 21 to the current limiting module 22, and then output to the power-consuming device 7 through the power supply output terminal P1 of the startup detection circuit 2. The controller 3 acquires the detection voltage signal through the signal output terminal P2 of the startup detection circuit 2. Only when the detection voltage signal meets the conditions is the main power supply circuit 1 turned on to supply power to the power-consuming device 7. Pre-start detection prevents accidental power-on, protects the safety of other components in the power supply control circuit, and improves the safety and reliability of the power supply control circuit.
[0045] In one embodiment, such as Figure 3 As shown, the start-up detection circuit 2 includes: The system comprises a second power supply module 21, a current limiting module 22, and a reverse protection module 23. The output terminal of the second power supply module 21 is connected to the input terminal of the current limiting module 22. One output terminal of the current limiting module 22 serves as the signal output terminal P2 of the startup detection circuit 2. The other output terminal of the current limiting module 22 is connected to the input terminal of the reverse protection module 23. The output terminal of the reverse protection module 23 serves as the power supply output terminal P1 of the startup detection circuit 2.
[0046] The current limiting module 22 can be a single resistor or multiple resistors connected in series, and can be adjusted as needed. As an example, the reverse protection module 23 can be a diode or other unidirectional components, and can be adjusted as needed, all within the protection scope of this utility model.
[0047] After the first power module 11 starts supplying power to the electrical device 7, the reverse cutoff of the anti-reverse module 23 prevents backflow from the first power module 11 into the second power module 21, thus protecting the safety of the components in the circuit.
[0048] The working process of the above power supply control circuit is as follows: The second power module 21 outputs a detection signal to the input terminal of the anti-reverse module 23 through the current limiting module 22. After passing through the anti-reverse module 23, the signal is transmitted to the electrical device 7, providing a small voltage to the electrical device 7 and forming a loop in the entire power supply control circuit. The second power module 21 also outputs a detection voltage signal to the signal output terminal P2 of the start detection circuit 2 through the current limiting module 22, and then outputs the detection voltage signal to the controller 3; After receiving the detection voltage signal, the controller 3 compares the detection signal with the detection voltage signal. When the difference between the two is within a preset threshold, the controller 3 sends a control signal to the control terminal of the first switch module 12 through the control input terminal L1 of the main power supply circuit 1. The first switch module 12 is turned on, so that the output terminal of the first power module 11 outputs a power supply signal to the electrical device 7 through the first output terminal of the first switch module 12. At the same time, the controller 3 collects the power supply voltage signal through the signal output terminal L3 of the main power supply circuit 1. When the difference between the detection signal and the detection voltage signal is not within the preset threshold, it indicates that the circuit has malfunctioned. The controller 3 is prohibited from sending control signals to the first switch module 12 through the control input terminal L1 of the main power supply circuit 1. At the same time, the controller 3 sends a power fault alarm to the host computer.
[0049] In this embodiment, the startup detection circuit 2 includes a second power supply module 21, a current limiting module 22, and a reverse polarity protection module 23. A detection signal is output from the output of the second power supply module 21 to the current limiting module 22, and then the detection signal is output to the device 7 via the reverse polarity protection module 23. The controller 3 acquires the detection voltage signal through the signal output terminal P2 of the startup detection circuit 2. Only when the detection voltage signal meets the conditions is the main power supply circuit 1 turned on to supply power to the device 7. Pre-start detection prevents accidental power-on. The current limiting module 22 protects the second power supply module 21. The reverse polarity protection module 23 prevents voltage fluctuations from affecting the startup detection circuit 2 when the device 7 malfunctions, thus protecting the safety of other components in the power supply control circuit and improving the safety and reliability of the power supply control circuit.
[0050] In one embodiment, such as Figure 4 As shown, the first switch module 12 includes a first switch 121 and a step-down element 122 connected in sequence to the output and input. The output terminal of the step-down element 122 serves as the signal output terminal L3 of the main power supply circuit 1, and the input terminal of the first switch 121 serves as the input terminal of the first switch module 12. The step-down component 122 reduces the voltage signal output from the first switch 121 and outputs it as a power supply voltage signal to the controller 3. The voltage signal output from the first switch 121 is 24V. The step-down component 122, which uses a voltage regulator or optocoupler, reduces the 24V to a 3.3V / 5V digital signal. The controller 3 uses GPIO input to read the HIGH / LOW level.
[0051] Or such as Figure 5As shown, specifically, the first switch module 12 includes a first switch 121 and a voltage divider circuit 123. The two ends of the voltage divider circuit 123 are respectively connected to the first switch 121 and ground (GND). The voltage divider output terminal of the voltage divider circuit 123 serves as the signal output terminal L3 of the main power supply circuit 1. The voltage divider circuit 123 may include a first resistor R1 and a second resistor R2 connected in series. One end of the first resistor R1 is connected to the first switch 121, and the other end serves as the voltage divider output terminal, which is connected to the controller 3. One end of the second resistor R2 is grounded. The controller 3 collects the voltage after voltage division by the voltage divider circuit 123, i.e., the power supply voltage signal. Simultaneously, the controller 3 compares the power supply voltage signal with the power supply signal to determine whether the first switch module 12 is supplying power normally. When the difference between the power supply voltage signal and the power supply signal is within a preset threshold (e.g., ±0.05V), it is determined that the power supply voltage of the first switch module 12 is normal. When the difference between the power supply voltage signal and the power supply signal is not within the preset threshold, it indicates that the power supply voltage of the first switch module 12 is abnormal. The controller 3 immediately sends a control signal to the first switch module 12 to disconnect the main power supply circuit 1, stop the first power module 11 from continuing to supply power to the electrical equipment 7, and at the same time send a fault signal to the host computer.
[0052] In this embodiment, the controller 3 controls the on / off state of the first switch module 12, and the power supply control circuit is detected by the start-up detection circuit 2. The controller 3 then determines whether the main power supply circuit 1 is turned on to supply power to the electrical equipment 7 only when certain conditions are met. Simultaneously, the controller 3 also receives the power supply voltage signal output from the step-down component 122 or the voltage divider circuit 123 and judges the power supply voltage signal. This pre-start detection prevents accidental power-on, protects the safety of other components in the power supply control circuit, and improves the safety and reliability of the power supply control circuit.
[0053] In one embodiment, such as Figure 3 As shown, when the electrical equipment is a motor body 9, the power supply control circuit further includes: The motor interface module 4 is connected to the power output terminal L2 of the main power supply circuit 1, and the controller 3 is electrically connected to the motor interface module 4.
[0054] The motor interface module 4 integrates the power supply input terminal, motor drive input interface, motor direction control pin, motor brake control pin, and motor speed feedback pin of the electrical device 7. The power supply input terminal of the electrical device 7 is connected to the power supply output terminal L2 of the main power supply circuit 1 to receive power supply signals to power the motor body 9; the motor drive input interface is connected to the controller 3 to receive PWM drive control signals from the controller 3; the motor direction control pin is connected to the controller 3 to receive clockwise (CC) and counterclockwise (CCW) direction signals from the controller 3; the motor brake control pin is connected to the controller 3 to receive brake control signals (BRAKE) from the controller 3; and the motor speed feedback pin is connected to the controller 3 to provide speed feedback (FG) feedback of the motor body 9 to the controller 3.
[0055] In this embodiment, when the electrical device is a motor body 9, a motor interface module 4 is set in the power supply control circuit. The motor interface module 4 connects to the motor body 9 to supply power and control the motor body 9. Simultaneously, the motor body 9 outputs feedback signals to the control system through the motor interface module 4. The motor body 9 is detected by the start-up detection circuit 2, and the controller 3 makes a judgment. Only when the conditions are met is the main power supply circuit 1 turned on to supply power to the motor body 9. Pre-start detection prevents accidental power-on, protects the safety of other components in the power supply control circuit, and improves the safety and reliability of the power supply control circuit.
[0056] In one embodiment, a motor control system for a snow removal device is provided, including two power supply control circuits as described above.
[0057] The power output terminal P1 of the start-up detection circuit 2 of one power supply control circuit and the power output terminal L2 of the main power supply circuit 1 are both used to connect to the power input terminal of the yaw motor module; the power output terminal P1 of the start-up detection circuit 2 of the other power supply control circuit and the power output terminal L2 of the main power supply circuit 1 are both used to connect to the power input terminal of the pitch motor module.
[0058] The pitch motor module controls the vertical angle of the snow-throwing tube of the snow removal equipment, while the yaw motor module controls the rotation angle of the snow-throwing tube.
[0059] In this embodiment, the motor control circuit of the snow removal equipment includes a main power supply circuit, a start-up detection circuit, and a controller. The start-up detection circuit detects the electrical equipment, and the controller determines whether the conditions are met before activating the main power supply circuit to supply power to the equipment. This pre-start detection prevents accidental power-on and protects other components in the snow removal equipment's motor control circuit, thus improving safety and reliability.
[0060] In one embodiment, a snow removal device is provided, including a snow throwing pipe, a yaw motor module, a pitch motor module, and a motor control system for the snow removal device.
[0061] The pitch motor module is used to control the pitch angle of the snow throw tube, and the yaw motor module is used to control the yaw angle of the snow throw tube. For the specific structure, please refer to Chinese Patent CN221072450U.
[0062] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.
Claims
1. A power supply control circuit, characterized in that, include: Main power supply circuit, start-up detection circuit, and controller; The power output terminal of the start-up detection circuit and the power output terminal of the main power supply circuit are both used to connect to the power input terminal of the electrical equipment, and output detection signals and power supply signals to the electrical equipment respectively. The controller is connected to the control input terminal of the main power supply circuit and is used to output control signals; the controller is also connected to the signal output terminal of the start detection circuit and is used to collect detection voltage signals.
2. The power supply control circuit according to claim 1, characterized in that, The controller is connected to the signal output terminal of the main power supply circuit and is used to output the acquired power supply voltage signal.
3. The power supply control circuit according to claim 1, characterized in that, This includes a comparison module and a filtering module whose input and output are connected in sequence; The input terminal of the comparison module is connected to the line between the power output terminal of the main power supply circuit and the power input terminal of the electrical equipment. The controller is connected to the output of the filter module and is used to collect current values.
4. The power supply control circuit according to any one of claims 1 to 3, characterized in that, The main power supply circuit includes: A first power supply module and a first switch module, wherein the output terminal of the first power supply module is connected to the input terminal of the first switch module, and the first output terminal of the first switch module serves as the power supply output terminal of the main power supply circuit; the control terminal of the first switch module serves as the control input terminal of the main power supply circuit.
5. The power supply control circuit according to claim 4, characterized in that, The startup detection circuit includes: The second power supply module and the current limiting module are connected. The output terminal of the second power supply module is connected to the input terminal of the current limiting module. The output terminal of the current limiting module serves as the power supply output terminal and the signal output terminal of the startup detection circuit.
6. The power supply control circuit according to claim 4, characterized in that, The startup detection circuit includes: The system comprises a second power supply module, a current limiting module, and a reverse protection module. The output terminal of the second power supply module is connected to the input terminal of the current limiting module. One output terminal of the current limiting module serves as the signal output terminal of the startup detection circuit. The other output terminal of the current limiting module is connected to the input terminal of the reverse protection module. The output terminal of the reverse protection module serves as the power supply output terminal of the startup detection circuit.
7. The power supply control circuit according to claim 4, characterized in that, The first switching module includes a first switch and a step-down element connected in sequence for output and input. The output terminal of the step-down element serves as the signal output terminal, and the input terminal of the first switch serves as the input terminal of the first switching module. Alternatively, the first switch module may include a first switch and a voltage divider circuit, with the two ends of the voltage divider circuit connected to the first switch and ground respectively, the voltage divider output terminal serving as the signal output terminal, and the input terminal of the first switch serving as the input terminal of the first switch module.
8. The power supply control circuit according to claim 1 or 2, characterized in that, The power supply control circuit also includes: The motor interface module is connected to the power output terminal of the main power supply circuit, and the controller is electrically connected to the motor interface module.
9. A motor control system for a snow removal device, characterized in that, Includes the power supply control circuit as described in any one of claims 1 to 8; The power output terminals of the start-up detection circuit and the main power supply circuit of one of the power supply control circuits are both used to connect to the power input terminal of the yaw motor module; the power output terminals of the start-up detection circuit and the main power supply circuit of the other power supply control circuit are both used to connect to the power input terminal of the pitch motor module.
10. A snow removal device, characterized in that, It includes a snow-throwing tube, a heading motor module, a pitch motor module, and a motor control system for the snow removal equipment as described in claim 9.