Relay adhesion protection device, method and equipment of clothes airing machine and storage medium

Abstract

The invention relates to a relay adhesion protection device, method and equipment of a clothes airing machine and a storage medium. The device comprises a current detection module, a control module and a motor driving module. Wherein the control module is respectively connected with the current detection module and the motor driving module; the control module is used for judging whether relay adhesion exists in the clothes drying machine or not based on a current signal which is detected by the current detection module and flows through the clothes drying machine motor when the clothes drying machine motor is in a non-running state, and if yes, at least two relays in the motor driving module are driven to operate cooperatively, and if not, the relay adhesion exists in the clothes drying machine. The voltage difference between the two ends of the motor of the clothes airing machine is zero; compared with the prior art, according to the technical scheme of the invention, through combination of current detection and cooperative control of the double relays, relay adhesion faults can be accurately identified and motor power can be rapidly cut off when the motor is not in operation, so that user safety is guaranteed, and equipment damage is avoided.

Description

Technical Field

[0001] This application relates to the field of electrical control technology, and more particularly to a relay adhesion protection device, method, equipment and storage medium for a clothes drying rack. Background Technology

[0002] In the electrical control systems of clothes drying racks and various smart devices, relays are the core actuators for controlling the on / off state of circuits. Their working principle is based on electromagnetic induction: when a small current of a preset specification is applied to the coil of the relay, the coil generates a magnetic field and attracts the armature on the iron core. The armature drives the contacts to move mechanically, thereby achieving "normally open contact closure" or "normally closed contact opening", ultimately achieving the on / off control of high-current / high-voltage load circuits such as the lifting motor of the clothes drying rack. Currently, clothes drying racks generally rely on such relays to switch the forward and reverse rotation of the lifting motor, lighting, and other functions, and their performance directly affects the stability of equipment operation.

[0003] However, in actual use of clothes drying racks, relay contacts are prone to sticking due to multiple factors: First, the current surge during relay switching can cause contact wear or welding; second, material defects and insufficient manufacturing precision of the relay itself may cause abnormal contact; third, fatigue deformation of the internal spring after long-term stress can reduce the contact reset capability, ultimately causing the contacts to stick together and fail to separate when they should disconnect. This fault will directly lead to the failure of the relay's switching control function, causing the clothes drying rack motor and other actuators to be out of control. For example, the motor may continue to run without receiving a running command, leading to equipment jamming, overheating, and other faults. In severe cases, it may cause mechanical damage or even endanger the personal safety of the user.

[0004] Therefore, there is an urgent need for a protection scheme that can detect relay sticking faults in a timely manner and respond quickly, in order to solve the problem of the lack of effective protection measures in the existing technology and ensure the safety of clothes drying rack operation and user use. Summary of the Invention

[0005] This application provides a relay sticking protection device, method, equipment, and storage medium for a clothes drying rack. By combining current detection with the coordinated control of two relays, it can accurately identify relay sticking faults and quickly cut off motor power when the motor is not running, thus ensuring user safety and preventing equipment damage.

[0006] In a first aspect, this application provides a relay sticking protection device for a clothes drying rack, comprising: a current detection module, a control module, and a motor drive module; wherein, the control module is connected to the current detection module and the motor drive module respectively; the control module is used to determine whether there is relay sticking in the clothes drying rack based on the current signal flowing through the clothes drying rack motor detected by the current detection module when the clothes drying rack motor is in a non-operating state; if so, the control module drives at least two relays in the motor drive module to operate in coordination to make the voltage difference between the two ends of the clothes drying rack motor zero.

[0007] In one possible implementation, the motor drive module further includes a relay drive chip; wherein the relay drive chip is connected between the control module and the coils of the at least two relays, and is used to drive the coils of the at least two relays to be energized or de-energized according to the control signal of the control module.

[0008] In one possible implementation, the relay adhesion protection device for a clothes drying rack provided in this application further includes: an alarm module; the alarm module is connected to the control module; the control module is further configured to trigger the alarm module to sound an alarm after determining that relay adhesion exists.

[0009] In one possible implementation, the current detection module includes a sampling resistor and a signal conditioning circuit; the sampling resistor is connected in series in the power supply circuit of the clothes drying machine motor; the signal conditioning circuit has its input terminal connected to both ends of the sampling resistor and its output terminal connected to the control module, for converting the voltage signal across the sampling resistor into a current signal that the control module can process.

[0010] Secondly, this application provides a relay sticking protection method for a clothes drying rack, applied to the relay sticking protection device as described in any of the above claims. The method includes: detecting a current signal flowing through the clothes drying rack motor; when the clothes drying rack motor is in a non-operating state, determining whether there is relay sticking in the clothes drying rack based on the detected current signal; if so, driving at least two relays in the motor drive module to operate in coordination to make the voltage difference between the two ends of the clothes drying rack motor zero.

[0011] In one possible implementation, the relay adhesion protection method for a clothes drying rack provided in this application further includes: when the clothes drying rack motor is in operation, and the operation state is that the motor rotates and drives the drying rod to rise, comparing the current signal with a preset overload current signal threshold; if the current signal exceeds the preset overload current signal threshold, controlling the clothes drying rack motor to stop rising.

[0012] In one possible implementation, determining whether a clothes drying rack has a stuck relay based on the detected current signal specifically includes: determining whether the detected current signal is a valid current signal; if so, determining that the clothes drying rack has a stuck relay.

[0013] In one possible implementation, the driving of at least two relays in the motor drive module to operate in coordination to make the voltage difference between the two ends of the clothes drying machine motor zero specifically includes: sending a target level signal to the relay drive chip in the motor drive module so that the relay drive chip simultaneously drives the coils of the at least two relays to be energized, so as to connect the two power input terminals of the clothes drying machine motor to the same power potential, thereby achieving zero voltage difference between the two ends of the clothes drying machine motor.

[0014] Thirdly, embodiments of this application also provide a computer device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the above-described method.

[0015] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the above-described method.

[0016] This application provides a relay adhesion protection device, method, equipment, and storage medium for a clothes drying rack, which has the following advantages compared with the prior art:

[0017] The device includes a current detection module, a control module, and a motor drive module. The control module is connected to both the current detection module and the motor drive module. When the clothes dryer motor is not in operation, the control module determines whether a relay is stuck based on the current signal detected by the current detection module flowing through the motor. If so, it drives at least two relays in the motor drive module to operate collaboratively, reducing the voltage difference across the motor to zero. Compared to existing technologies, this application's solution constructs a collaborative architecture of a current detection module, control module, and motor drive module. The control module detects relay sticking through the current detection module when the motor is not in operation, resulting in low cost and high reliability. Once sticking is detected, it immediately drives at least two relays in the motor drive module to operate collaboratively, reducing the voltage difference across the motor to zero. This achieves timely detection of relay sticking faults and quickly cuts off motor power by reducing the voltage difference to zero, creating a closed loop from fault detection to safety protection. This avoids mechanical or electrical damage caused by abnormal motor operation and fundamentally eliminates the personal safety risks faced by users due to equipment malfunction. Attached Figure Description

[0018] 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.

[0019] 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.

[0020] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0021] Figure 1 This is a schematic diagram of the structure of a relay adhesion protection device for a clothes drying rack provided in this application;

[0022] Figure 2 This is another structural schematic diagram of a relay adhesion protection device for a clothes drying rack provided in this application;

[0023] Figure 3 This is a schematic diagram of the current circuit when the clothes drying rack motor is rotating forward, as provided in this application;

[0024] Figure 4 This is a schematic diagram of the current circuit when the clothes drying rack motor reverses, as provided in this application.

[0025] Figure 5 This is a flowchart illustrating one embodiment of a relay adhesion protection method for a clothes drying rack provided in this application;

[0026] Figure 6 This is a schematic diagram of the structure of a computer device provided in this application. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0029] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] As used in this specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrases "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0033] Example 1, see Figure 1 , Figure 1 This is a schematic diagram of the structure of a relay adhesion protection device for a clothes drying rack provided in this application; as shown. Figure 1 As shown, the relay sticking protection device of this clothes drying rack includes a current detection module 10, a control module 11, and a motor drive module 12, as detailed below:

[0034] In one embodiment, the control module 11 is connected to the current detection module 10 and the motor drive module 20, respectively.

[0035] In one embodiment, the current detection module 10 is used to detect the current signal flowing through the lifting motor of the clothes drying machine and transmit the signal to the control module 11.

[0036] Specifically, the current detection module 10 includes a sampling resistor R43 and a signal conditioning circuit; wherein, the sampling resistor R43 is connected in series in the power supply circuit of the clothes drying machine motor; the signal conditioning circuit has its input terminal connected to both ends of the sampling resistor R43 and its output terminal connected to the control module 11, for converting the voltage signal across the sampling resistor R43 into a current signal that the control module can process.

[0037] Specifically, the sampling resistor R43 is used to convert the current signal flowing through the clothes drying machine motor into a detectable voltage signal; the signal conditioning circuit is used to condition the weak voltage signal output by the sampling resistor R43 into a standard current signal that the control module 11 can recognize and process; this setting can improve the accuracy of current detection, avoid misjudgment or missed judgment of adhesion faults caused by signal interference, and ensure that the control module can reliably identify valid fault signals.

[0038] Specifically, the signal conditioning circuit includes an inductor L5, a capacitor EC14, a resistor R41, a capacitor C27, a diode D8, a diode D9, and a capacitor C31. The second terminal of the inductor L5 is connected to the first terminal of the capacitor EC14. The first terminal of the capacitor EC14 is connected to the first terminal of the capacitor C27, and the second terminal of the capacitor EC14 is connected to the second terminal of the capacitor C27. The capacitors EC14 and C27 are connected in parallel. The first terminal of the capacitor C27 is connected to the first terminal of the resistor R41. The second terminal of the capacitor C27 is connected to the anode of the diode D9, which is also grounded. The second terminal of the resistor R41 is connected to the cathode of the diode D9 and the anode of the diode D8, which is connected to +5V. The first terminal of the capacitor C31 is connected to the cathode of the diode D9, the anode of the diode D8, and the second terminal of the resistor R41. The second terminal of the capacitor C31 is grounded.

[0039] Specifically, the sampling resistor R43 is connected to the signal conditioning circuit, wherein the first end of the sampling resistor R43 is connected to the first end of the inductor L5, and the second end of the sampling resistor R43 is connected to the second end of the capacitor EC14.

[0040] In one embodiment, the control module 11 is a chip IC1.

[0041] Specifically, the control module 11 includes at least one input control pin and at least two output control pins.

[0042] Specifically, when the control module 11 is connected to the current detection module 10, the first input control pin of the control module 11 is connected to the output terminal of the current detection module 10, wherein the output terminal of the current detection module 10 is the first terminal of the capacitor C31.

[0043] In one embodiment, the motor drive module 12 includes at least two relays.

[0044] Preferably, when the number of relays included in the motor drive module 12 is 2, the two relays include a first relay REL3 and a second relay REL4.

[0045] Specifically, both the first relay REL3 and the second relay REL4 include two sets of contacts consisting of three contacts, such as the 1-2 contact and the 1-5 contact consisting of contact 1, contact 2 and contact 5; the power supply circuit of the clothes drying machine motor is changed by switching the contacts on and off.

[0046] In one embodiment, the motor drive module 12 further includes a relay drive chip U6.

[0047] Preferably, the relay driver chip U6 is a high-voltage, high-current Darlington transistor array chip ULN2003, which can amplify the weak-level control signal output by the control module 11 into a strong current signal sufficient to drive the relay coil.

[0048] Specifically, the relay driver chip U6 includes at least two input pins and at least two output pins; preferably, the first output pin is used to output a motor rising control signal, and the second output pin is used to output a motor falling control signal.

[0049] Specifically, when the relay driver chip U6 is connected between the control module 11 and the coils of the at least two relays, the relay driver chip U6 is connected to the first relay REL3 and the second relay REL4 respectively through the at least two output pins, and the relay driver chip U6 is connected to the at least two output control pins of the control module 11 through the at least two input pins.

[0050] Specifically, when the relay driver chip U6 is connected to the first relay REL3 and the second relay REL4 respectively through the at least two output pins; the first output pin of the at least two output pins is connected to the first end of the coil of the first relay REL3, and the second end of the coil of the first relay REL3 is connected to +12V; the second output pin of the coil of the at least two output pins is connected to the first end of the coil of the second relay REL4, and the second end of the coil of the second relay REL4 is connected to +12V.

[0051] Specifically, when the relay driver chip U6 is connected to at least two output control pins of the control module 11 through at least two input pins, the first input pin of the at least two input pins is connected to the first output control pin of the at least two output control pins of the control module 11, and the second input pin of the at least two input pins is connected to the second output control pin of the at least two output control pins of the control module 11.

[0052] In one embodiment, the relay driver chip U6 is used to drive the coils of at least two relays to be energized or de-energized according to the control signal of the control module 11.

[0053] Specifically, one end of the coil of a single relay is connected to a suitable power supply voltage, and the other end is connected to the output pin of the relay driver chip U6; and the input pin of the relay driver chip U6 is connected to the output control pin of the control module 11; the control module 11 controls the relay driver chip U6 by sending a high-level or low-level signal to the input pin of the relay driver chip U6, thereby driving the coils of the at least two relays to be energized or de-energized.

[0054] Specifically, when the control module 11 sends a high-level signal to the first input pin of the relay driver chip U6, the Darlington transistor pair corresponding to the first input pin inside the relay driver chip U6 is turned on. Due to the current amplification effect of the Darlington transistor, a larger current can flow from the power supply pin VDD of the relay driver chip U6, through the turned-on Darlington transistor, to the corresponding first output pin, then into the coil of the first relay REL3 connected to the first output pin, and finally back to the power ground VSS in the relay driver chip U6, thus forming a complete current loop. At this time, current flows through the coil of the first relay REL3, which will generate... A magnetic field is generated, attracting the armature inside the first relay REL3, causing contacts 1-2 of the first relay REL3 to conduct and contacts 1-5 to open. When the control module sends a low-level signal to the second input pin of the relay driver chip U6, the Darlington transistor pair corresponding to the second input pin inside the relay driver chip U6 is turned off, cutting off the current path from the power supply pin VDD to the second output pin. No current flows through the coil of the second relay REL4, and its internal magnetic field disappears. The armature is reset under the action of the spring, causing the contacts of the second relay REL4 to return to their initial state. At this time, contacts 1-5 of the second relay REL4 are conducted, and contacts 1-2 are open.

[0055] Conversely, when the control module sends a low-level signal to the first input pin of the relay driver chip U6, the Darlington transistor pair corresponding to the first input pin inside the relay driver chip U6 is turned off, cutting off the current path from the power supply pin VDD to the first output pin; no current flows through the coil of the first relay REL3, its internal magnetic field disappears, and the armature is reset by the spring, restoring the contacts of the first relay REL3 to their initial state. At this time, contacts 1-5 of the first relay REL4 are turned on, and contacts 1-2 are turned off; when the control module 11 sends a high-level signal to the second input pin of the relay driver chip U6, the Darlington transistor pair corresponding to the first input pin of the relay driver chip U6 is turned off, cutting off the current path from the power supply pin VDD to the first output pin; no current flows through the coil of the first relay REL3, its internal magnetic field disappears, and the armature is reset by the spring, causing the contacts of the first relay REL3 to return to their initial state. At this time, contacts 1-5 of the first relay REL4 are turned on, and contacts 1-2 are turned off; The Darlington transistor corresponding to the second input pin is turned on. Due to the current amplification effect of the Darlington transistor, a larger current can flow from the power supply pin VDD of the relay driver chip U6, through the turned-on Darlington transistor, to the corresponding second output pin, then into the coil of the second relay REL4 connected to the second output pin, and finally back to the power supply ground VSS in the relay driver chip U6, thus forming a complete current loop. At this time, there is current flowing through the coil of the second relay REL4, which will generate a magnetic field, attracting the armature inside the second relay REL4, causing contacts 1-2 of the second relay REL4 to turn on and contacts 1-5 to turn off.

[0056] Specifically, addressing the technical challenge that the output signal from the control module may be insufficient to drive the relay coil, a relay driver chip U6 is placed between the control module 11 and the at least two relays. The control module 11 sends high and low level signals to different input pins of the relay driver chip U6, which amplifies the weak level signal from the control module. This allows for the individual or simultaneous control of the energization or de-energization of multiple relay coils, enabling control of different circuits and meeting the needs of various operating states, such as the forward / reverse rotation and stop of a motor in a clothes dryer. This avoids relay delays or failures due to insufficient drive signals, further improving the timeliness and stability of the relay sticking device.

[0057] In one embodiment, the second contact of the first relay REL3 and the second contact of the second relay REL4 are respectively connected to a 32V power supply through diode D13; the fifth contact of the first relay REL3 and the fifth contact of the second relay REL4 are respectively connected to the first end of the sampling resistor R43.

[0058] In one embodiment, the first relay REL3 and the second relay REL4 are respectively connected to the clothes drying machine motor; specifically, the first contact of the first relay REL3 is connected to the first pin of the CN2 socket through the first end of the inductor L6, and the first contact of the second relay REL4 is connected to the second pin of the CN2 socket through the second end of the inductor L6. The two pins of the CN2 socket correspond to the first power input terminal and the second power input terminal of the clothes drying machine motor, respectively.

[0059] like Figure 2 As shown, Figure 2 This is another structural schematic diagram of a relay adhesion protection device for a clothes drying rack provided in this application.

[0060] When the first output control pin of the control module 11 outputs a high-level signal and the second output control pin of the control module 11 outputs a low-level signal, at this time, contacts 1-2 of the first relay REL3 are turned on, and contacts 1-5 of the second relay REL4 are turned on, forming the current circuit of the clothes drying machine motor as follows. Figure 3 As shown, at this time, current flows in from pin 1 of the CN2 socket and out from pin 2, causing the clothes dryer motor to rotate in the forward direction; Figure 3 This is a schematic diagram of the current circuit when the clothes drying machine motor is rotating forward, as provided in this application.

[0061] When the first output control pin of the control module 11 outputs a low-level signal and the second output control pin of the control module 11 outputs a high-level signal, at this time, contacts 1-5 of the first relay REL3 are turned on, and contacts 1-2 of the second relay REL4 are turned on, forming the current circuit of the clothes drying machine motor as follows. Figure 4 As shown, at this time, current flows in from pin 2 of the CN2 socket and flows out from pin 1, causing the clothes dryer motor to reverse. Figure 4 This is a schematic diagram of the current circuit when the clothes drying machine motor reverses, as provided in this application.

[0062] In one embodiment, the control module 11 is used to determine whether there is relay sticking in the clothes dryer when the clothes dryer motor is not running, based on the current signal flowing through the clothes dryer motor detected by the current detection module 10. If so, it drives at least two relays in the motor drive module 12 to operate in coordination so that the voltage difference between the two ends of the clothes dryer motor is zero.

[0063] In one embodiment, the non-operating state of the clothes drying machine motor refers to the state in which the control module 11 does not send a forward rotation command or a reverse rotation command to the motor drive module 12.

[0064] In one embodiment, when the clothes drying machine motor is not in operation, both the first relay REL3 and the second relay REL4 are de-energized, that is, their 1-5 contacts are disconnected, the motor windings of the clothes drying machine are not powered by 32V, and no current flows through the clothes drying machine motor.

[0065] In one embodiment, the control module 11 is used to receive the current signal output by the current detection module 10, determine whether the current signal is a valid current signal, and if so, determine that the clothes drying machine has a relay stuck.

[0066] Specifically, since the current detection module 10 converts the current flowing through the motor into an electrical signal, but this signal may contain circuit noise and is not the actual motor power supply current, it is also necessary to determine whether the current signal is a valid current signal.

[0067] Specifically, when determining whether the current signal is a valid current signal, the current value corresponding to the current signal is compared with a preset current threshold. If the current value is greater than the preset current threshold and the first time the current signal is detected meets the preset first time threshold, the current signal is determined to be a valid current signal.

[0068] Specifically, the detection of a current signal indicates that there is power supply to the clothes drying machine motor. However, if the clothes drying machine motor is not running at this time, it indicates that there is a power supply abnormality. Therefore, the control module 11 can directly determine the relay sticking situation by judging the two conditions of non-running state and valid current signal.

[0069] In one embodiment, the control module 11 is used to drive at least two relays in the motor drive module 12 so that when the voltage difference between the two ends of the clothes drying machine motor is zero, the control module 11 is used to send a target level signal to the relay drive chip U6 so that the relay drive chip U6 simultaneously drives the coils of the at least two relays to be energized, so as to connect the two power input terminals of the clothes drying machine motor to the same power potential, thereby realizing that the voltage difference between the two ends of the clothes drying machine motor is zero.

[0070] Specifically, the target level signal is a high level signal; the same power supply potential is the positive terminal of the power supply that drives the clothes drying machine motor.

[0071] Specifically, the control module simultaneously outputs high-level signals to the two input pins of the motor drive module U6 via the first and second output control pins, energizing the coils of the first and second relays. This causes the 1-2 contacts of the first and second relays to conduct. At this time, the 2-contact of the first relay is connected to a 32V power supply, allowing the 32V power to be transmitted to the first power input terminal of the clothes drying machine motor via the 2-1 contact of the first relay. Similarly, the 2-contact of the second relay is connected to a 32V power supply, allowing the 32V power to be transmitted to the second power input terminal of the clothes drying machine motor via the 2-1 contact of the second relay. Both power input terminals of the motor are connected to a 32V power supply through their respective relay contacts, resulting in identical potentials. Based on the principle that voltage difference = high potential - low potential, the voltage difference across the clothes drying machine motor is zero. Without a potential difference, no current flows through the motor windings, and the clothes drying machine motor immediately stops operating, resolving the motor malfunction caused by relay sticking.

[0072] In one embodiment, the relay adhesion protection device for the clothes drying rack provided in this application further includes an alarm module.

[0073] In one embodiment, the alarm module is connected to the control module; the control module is further configured to trigger the alarm module to sound an alarm after determining that a relay is stuck.

[0074] Specifically, the alarm module is at least one of a buzzer, a voice prompt module, or a mobile terminal application notification function.

[0075] Specifically, after determining that there is a relay sticking, the system will notify the user of the motor malfunction via buzzer, voice, or APP, so that the user can pay attention to safety and contact after-sales personnel for handling in a timely manner.

[0076] Specifically, to address the issue of users continuing to use the device without being aware of adhesion malfunctions, an alarm module can be set up to promptly notify users of the fault, enabling them to quickly become aware of the equipment abnormality, avoid secondary risks caused by ignorance, and improve user safety.

[0077] Example 2, see Figure 5 , Figure 5 This is a flowchart illustrating one embodiment of a relay adhesion protection method for a clothes drying rack provided in this application. Figure 5 As shown, the lifting control method includes steps 501 and 502, as detailed below:

[0078] Step 501: Detect the current signal flowing through the clothes drying machine motor.

[0079] In one embodiment, a current signal flowing through the clothes drying machine motor is detected using a current detection module, and the current signal is sent to the control module based on the connection relationship between the current detection module and the control module.

[0080] Step 502: When the clothes drying machine motor is not running, based on the detected current signal, determine whether there is relay sticking in the clothes drying machine. If so, drive at least two relays in the motor drive module to operate in coordination so that the voltage difference between the two ends of the clothes drying machine motor is zero.

[0081] In one embodiment, when determining whether a clothes drying rack has a stuck relay based on the detected current signal, the determination is made by judging whether the detected current signal is a valid current signal. If so, the clothes drying rack is determined to have a stuck relay.

[0082] Specifically, to address the issue of potential circuit noise in current signals leading to false adhesion detection, the validity of the current signal is assessed to ensure the accuracy of adhesion determination and avoid unnecessary protection actions triggered by false signals.

[0083] In one embodiment, when the control module determines whether the current signal is a valid current signal, the current value corresponding to the current signal is compared with a preset current threshold. If the current value is greater than the preset current threshold and the first time the current signal is detected meets the preset first time threshold, the current signal is determined to be a valid current signal.

[0084] In one embodiment, at least two relays in the motor drive module are driven so that the voltage difference between the two ends of the clothes drying machine motor is zero. Then, the control module sends a target level signal to the relay drive chip in the motor drive module so that the relay drive chip simultaneously drives the coils of the at least two relays to be energized, so as to connect the two power input terminals of the clothes drying machine motor to the same power potential, thereby achieving zero voltage difference between the two ends of the clothes drying machine motor.

[0085] Specifically, the target level signal is a high level signal, and the same power supply potential is the positive terminal of the power supply that drives the clothes drying machine motor.

[0086] Specifically, the target level signal is transmitted through the relay driver chip to ensure that the two relay coils are energized synchronously, and the two ends of the motor are quickly connected to the same power supply potential. This avoids protection delays or failures caused by asynchronous relay operation and ensures that the voltage difference between the two ends of the motor quickly returns to zero and stops operation.

[0087] In one embodiment, when the clothes drying machine motor is in operation, and the operation state is that the motor rotates to drive the drying rod to rise, the current signal is compared with a preset overload current signal threshold. If the current signal exceeds the preset overload current signal threshold, the clothes drying machine motor is controlled to stop rising.

[0088] Specifically, the current detection module monitors the current signal flowing through the clothes drying rack motor in real time. When the clothes drying rack motor rotates and drives the drying rod to rise, the current detection circuit can determine overload and stop the machine. This can promptly identify overload conditions and stop the motor, avoiding equipment failures such as motor damage due to excessive load, and preventing safety hazards caused by overload, thus improving the safety of equipment operation. When the clothes drying rack motor stops, the current detection circuit uses the current signal to perform relay sticking protection, which is low-cost and highly reliable.

[0089] This application provides a relay sticking protection method for a clothes drying rack. It uses the current detection signal of the clothes drying rack motor in the non-operating state to determine the sticking fault. When the sticking of the relay is determined, the voltage difference of the motor is reduced to zero through the coordinated operation of two relays, and the power is quickly cut off. This not only avoids equipment damage but also ensures user safety, achieving accurate identification and rapid response to sticking faults.

[0090] The relay adhesion protection device for the clothes drying rack described above can implement the relay adhesion protection method for the clothes drying rack in the above method embodiment. The options in the above method embodiment are also applicable to this embodiment, and will not be detailed here.

[0091] like Figure 6 As shown, Figure 6This is a schematic diagram of the structure of a computer device provided in this application; it includes a processor 611, a communication interface 612, a memory 613 and a communication bus 614, wherein the processor 611, the communication interface 612 and the memory 613 communicate with each other through the communication bus 614, and the memory 613 is used to store computer programs.

[0092] In one embodiment of this application, the processor 611, when executing the program stored in the memory 613, implements the relay adhesion protection method for the clothes drying rack provided in any of the foregoing method embodiments.

[0093] It will be understood by those skilled in the art that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program may be stored in a storage medium, which is a computer-readable storage medium. The computer program is executed by at least one processor in the computer system to implement the process steps of the embodiments of the above methods.

[0094] Therefore, this application embodiment also provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, it implements the steps of the relay adhesion protection method for a clothes drying rack provided in any of the foregoing method embodiments.

[0095] The storage medium is a physical, non-transient storage medium, such as a USB flash drive, external hard drive, read-only memory (ROM), magnetic disk, or optical disk, or any other physical storage medium capable of storing program code. The computer-readable storage medium can be non-volatile or volatile.

[0096] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0097] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For example, the division of each unit is merely a logical functional division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0098] The steps in the methods of this application embodiment can be adjusted, merged, or deleted according to actual needs. The units in the apparatus of this application embodiment can be merged, divided, or deleted according to actual needs. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0099] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a terminal, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0100] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0101] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0102] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A relay adhesion protection device for a clothes drying rack, characterized in that, include: Current detection module, control module, and motor drive module; The control module is connected to both the current detection module and the motor drive module. The control module is used to determine whether there is relay sticking in the clothes dryer when the clothes dryer motor is not running, based on the current signal flowing through the clothes dryer motor detected by the current detection module. If so, it drives at least two relays in the motor drive module to operate in coordination so that the voltage difference between the two ends of the clothes dryer motor is zero.

2. The relay adhesion protection device for the clothes drying rack as described in claim 1, characterized in that, The motor drive module also includes a relay drive chip; The relay driver chip is connected between the control module and the coils of the at least two relays, and is used to drive the coils of the at least two relays to be energized or de-energized according to the control signal of the control module.

3. The relay adhesion protection device for the clothes drying rack as described in claim 1, characterized in that, Also includes: Alarm module; The alarm module is connected to the control module; The control module is also used to trigger the alarm module to sound an alarm after determining that a relay is stuck.

4. The relay adhesion protection device for the clothes drying rack as described in claim 1, characterized in that, The current detection module includes a sampling resistor and a signal conditioning circuit; The sampling resistor is connected in series in the power supply circuit of the clothes drying machine motor; The signal conditioning circuit has its input terminal connected to both ends of the sampling resistor and its output terminal connected to the control module, and is used to convert the voltage signal across the sampling resistor into a current signal that can be processed by the control module.

5. A method for protecting a clothes drying rack from relay adhesion, applied to the relay adhesion protection device as described in any one of claims 1-4, the method comprising: Detect the current signal flowing through the clothes drying machine motor; When the clothes drying machine motor is not running, based on the detected current signal, it is determined whether there is relay sticking in the clothes drying machine. If so, at least two relays in the motor drive module are driven to operate in coordination so that the voltage difference between the two ends of the clothes drying machine motor is zero.

6. The method as described in claim 5 above, characterized in that, Also includes: When the clothes drying rack motor is running, and the running state is that the motor rotates and drives the drying rod to rise, the current signal is compared with a preset overload current signal threshold. If the current signal exceeds the preset overload current signal threshold, the clothes drying rack motor is controlled to stop rising.

7. The relay adhesion protection method for a clothes drying rack as described in claim 5, characterized in that, The determination of whether a relay in the clothes drying rack is stuck, based on the detected current signal, specifically includes: Determine whether the detected current signal is a valid current signal. If it is, then determine that the clothes drying machine has a relay stuck.

8. The relay adhesion protection method for a clothes drying rack as described in claim 5, characterized in that, The method of driving at least two relays in the motor drive module to operate in coordination to make the voltage difference across the clothes drying machine motor zero specifically includes: A target level signal is sent to the relay driver chip in the motor drive module so that the relay driver chip simultaneously drives the coils of at least two relays to be energized, so as to connect the two power input terminals of the clothes drying machine motor to the same power potential and realize that the voltage difference between the two ends of the clothes drying machine motor is zero.

9. A computer device, characterized in that, The computer device includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the method as described in any one of claims 5-8.

10. A computer-readable storage medium, characterized in that, The storage medium stores a computer program that, when executed by a processor, can implement the method as described in any one of claims 5-8.

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