Clothes drying machine control method and clothes drying machine system

Abstract

The present application relates to a kind of clothes drying machine control method, it is applied to the remote control end of clothes drying machine, the method includes: in response to clothes drying machine pairing signal, the frequency hopping channel list sent by clothes drying machine is obtained;Wherein, the frequency hopping channel list includes several communication frequency points;In response to clothes drying machine control operation, the control instruction corresponding to the clothes drying machine control operation is sent to the clothes drying machine through the several communication frequency points respectively;Receive the operation success signal issued by the clothes drying machine, and prompt operation success;Wherein, the operation success signal is used to indicate that the clothes drying machine successfully receives at least one control instruction sent by the communication frequency point.The method provided in the present application can effectively avoid the continuous interference of fixed frequency point, significantly improve the reliability and user experience of wireless control under complex electromagnetic environment.

Description

Technical Field

[0001] This invention relates to the technical field of smart home control, and in particular to a clothes drying rack control method and a clothes drying rack. Background Technology

[0002] With the development of smart home technology, smart clothes dryers with wireless remote control functionality have become mainstream in the market. Currently, most clothes dryers use 433MHz radio frequency communication technology to achieve wireless control between the remote control and the main unit. This technology has advantages such as low power consumption, strong penetration, and moderate cost.

[0003] In practical remote control schemes, the following workflow is typically employed: After the user issues a command via the remote control buttons, the remote control repeatedly transmits the same control command data packets multiple times on a fixed communication frequency. Upon receiving the data packets, the clothes drying machine's main unit usually needs to decode the identical data packets twice consecutively before determining the command's validity and executing the corresponding action. This "fixed frequency, repeated transmission, and continuous decision-making" mechanism is designed to address occasional data packet loss.

[0004] However, in real-world usage environments, especially in densely populated urban residential areas, the 433MHz band experiences numerous co-channel interference sources, such as other wireless remote control devices, wireless doorbells, and car tire pressure monitoring signals, resulting in a complex electromagnetic environment. In such complex electromagnetic environments, existing fixed-frequency communication solutions exhibit significant drawbacks: when the fixed frequency encounters continuous or strongly intermittent interference, data packets sent by the remote control may be frequently corrupted or lost during transmission. Even if the remote control sends multiple consecutive packets, the clothes dryer's main unit may be unable to make a valid decision because it cannot receive two consecutive correct and identical data packets, leading to unresponsive user operations—a phenomenon known as "code loss." Users often need to attempt button presses multiple times at close range to successfully control the device, significantly impacting user experience and equipment reliability. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a clothes drying rack control method and a clothes drying rack system. By dynamically selecting multiple communication frequency points according to environmental interference and sending control commands at the remote control terminal using frequency hopping, the clothes drying rack performs multi-frequency monitoring and intelligent decision-making, thereby effectively avoiding continuous interference from fixed frequency points and significantly improving the reliability of wireless control and user experience in complex electromagnetic environments.

[0006] Firstly, this application provides a clothes drying rack control method, applied to the remote control terminal of the clothes drying rack, comprising:

[0007] In response to a clothes drying rack pairing signal, a list of frequency hopping channels sent by the clothes drying rack is obtained; wherein, the list of frequency hopping channels includes several communication frequency points; In response to the clothes drying rack control operation, the control command corresponding to the clothes drying rack control operation is sent to the clothes drying rack through the plurality of communication frequency points respectively; The system receives an operation success signal from the clothes drying machine and displays a message indicating that the operation was successful; wherein the operation success signal is used to indicate that the clothes drying machine has successfully received control commands sent from at least one of the communication frequency points.

[0008] Secondly, this application provides a clothes drying rack control method, applied to a clothes drying rack, comprising: Listen to and receive control commands sent by the remote control of the clothes drying rack through several communication frequencies; The control command is effectively judged based on preset signal reception judgment conditions. If the control command is deemed valid, a success signal is sent to the remote control terminal, and the corresponding clothes-drying operation is executed according to the control command.

[0009] Thirdly, this application provides a clothes drying rack system, including a remote control terminal and a clothes drying rack, wherein the remote control terminal is communicatively connected to the clothes drying rack; The remote control and the clothes dryer are used to perform the steps of the clothes dryer control method as described above.

[0010] The clothes drying rack control method and system provided in this application, for the remote control terminal, obtain a frequency hopping channel list containing several filtered communication frequencies with low interference levels through a corresponding pairing signal. Based on user operation, the corresponding control commands are sequentially sent to the clothes drying rack through the aforementioned communication frequencies. For the clothes drying rack, the system monitors and receives signals from the communication frequencies in the frequency hopping channel list, obtains the control commands sent by the remote control terminal, and judges the validity of the control commands based on preset signal reception judgment conditions. If the command is deemed valid, a success signal is sent back to the remote control terminal, and the corresponding clothes drying operation is executed. The technical solution provided in this application, through adaptive frequency hopping communication, allows a single control command to be repeatedly sent and monitored on multiple frequencies, effectively avoiding continuous interference at specific frequencies in complex environments, significantly reducing the command packet loss rate, thereby solving the problems of repeated button presses and unclear operation feedback, and improving the reliability and user experience of wireless remote control. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a flowchart illustrating the steps of a clothes drying rack control method provided in Embodiment 1 of this application; Figure 2 This is a flowchart illustrating the steps of dual-antenna diversity transmission as provided in Embodiment 1 of this application; Figure 3 This is a flowchart illustrating the steps of a clothes drying rack control method provided in Embodiment 2 of this application; Figure 4 This is a schematic diagram of a clothes drying rack system provided in Embodiment 3 of this application. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the protection scope of this application.

[0014] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0015] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0016] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0017] In practical remote control schemes, the following workflow is typically employed: After the user issues a command via the remote control buttons, the remote control repeatedly transmits the same control command data packets multiple times on a fixed communication frequency. Upon receiving the data packets, the clothes drying machine's main unit usually needs to decode the identical data packets twice consecutively before determining the command's validity and executing the corresponding action. This "fixed frequency, repeated transmission, and continuous decision-making" mechanism is designed to address occasional data packet loss.

[0018] However, in real-world usage environments, especially in densely populated urban residential areas, the 433MHz band experiences numerous co-channel interference sources, such as other wireless remote control devices, wireless doorbells, and car tire pressure monitoring signals, resulting in a complex electromagnetic environment. In such complex electromagnetic environments, existing fixed-frequency communication solutions exhibit significant drawbacks: when the fixed frequency encounters continuous or strongly intermittent interference, data packets sent by the remote control may be frequently corrupted or lost during transmission. Even if the remote control sends multiple consecutive packets, the clothes dryer's main unit may be unable to make a valid decision because it cannot receive two consecutive correct and identical data packets, leading to unresponsive user operations—a phenomenon known as "code loss." Users often need to attempt button presses multiple times at close range to successfully control the device, significantly impacting user experience and equipment reliability.

[0019] In response, this application provides a clothes drying rack control method that filters out multiple communication frequencies by detecting the interference status of communication frequencies in the frequency band. This allows control commands to be sent multiple times through multiple communication frequencies, avoiding command transmission failure when a single frequency is interfered with, reducing packet loss rate, and improving the reliability of remote control and user experience.

[0020] Example 1 Please see Figure 1 , Figure 1 This is a flowchart illustrating the steps of a clothes drying rack control method provided in Embodiment 1 of this application.

[0021] This application provides a clothes drying rack control method, applied to the remote control terminal of the clothes drying rack. The following description will use the remote control terminal as the execution subject in the method embodiment.

[0022] The method includes: S11, in response to the clothes drying rack pairing signal, obtain the frequency hopping channel list sent by the clothes drying rack; wherein, the frequency hopping channel list includes several communication frequency points; S12, in response to the clothes drying rack control operation, the control command corresponding to the clothes drying rack control operation is sent to the clothes drying rack through the plurality of communication frequency points respectively; S13, receive the operation success signal sent by the clothes drying machine and indicate that the operation is successful; wherein, the operation success signal is used to indicate that the clothes drying machine has successfully received control commands sent by at least one of the communication frequency points.

[0023] The clothes drying rack control method provided in this application, for the remote control end of the clothes drying rack, obtains a list of frequency hopping channels determined by the clothes drying rack based on the current environmental interference conditions in response to the clothes drying rack pairing signal, thus obtaining several communication frequency points. Then, in response to the user's control operation, the corresponding control command is sequentially sent to the clothes drying rack through multiple communication frequency points. When a successful operation signal is received from the clothes drying rack, it indicates that the control command was successfully sent and is valid. This embodiment effectively reduces the packet loss rate by sending control commands through multi-frequency hopping.

[0024] For step S11, in response to the clothes drying machine pairing signal, the list of frequency hopping channels sent by the clothes drying machine is obtained.

[0025] The frequency hopping channel list includes several communication frequency points.

[0026] In one embodiment, the clothes drying rack pairing signal is a signal sent by the clothes drying rack or triggered by a pairing event when the remote control terminal of the clothes drying rack first pairs with the clothes drying rack to establish a communication connection.

[0027] When the remote control is paired with the clothes dryer, the remote control receives a frequency hopping channel list sent by the clothes dryer. This list includes several communication frequencies selected from a preset operating frequency band to minimize interference. Using these selected frequencies for signal transmission and reception improves the success rate and efficiency. For example, in one embodiment, both the remote control and the clothes dryer include a radio frequency transceiver module (e.g., a 433MHz radio frequency transceiver). The operating frequency band is 430.0MHz to 434.0MHz. The clothes dryer selects several communication frequencies with the lowest interference from all communication frequencies within the operating frequency band, for example, 3-5 frequencies. In one embodiment, 5 communication frequencies are selected, and these frequencies are used as frequency hopping channels to form the frequency hopping channel list.

[0028] The interference intensity is a comprehensive evaluation index assessed and quantified by one or more measurable indicators. In one embodiment, it is quantified by measuring the Received Signal Strength Indication (RSSI) value at the communication frequency. In other embodiments, the quantification index of the interference intensity may also include signal-to-noise ratio (SNR), bit error rate (BER), etc.

[0029] In this embodiment, frequency bands are scanned and filtered during pairing to obtain a frequency hopping channel list containing multiple communication frequencies, freeing the system from the limitation of using fixed frequencies in traditional solutions. Frequency selection based on real-time signal interference detection effectively reduces packet loss and improves signal transmission success rate.

[0030] For step S12, in response to the clothes drying machine control operation, the control command corresponding to the clothes drying machine control operation is sent to the clothes drying machine through the several communication frequency points respectively.

[0031] In one embodiment, the remote control terminal includes a first transmitting antenna and a second transmitting antenna.

[0032] The first transmitting antenna and the second transmitting antenna are two independent antennas integrated inside or connected to the remote control terminal. In one embodiment, the first transmitting antenna is a printed circuit board (PCB) antenna, which has the advantage of compact structure; the second transmitting antenna is an external antenna, such as a spring antenna or a whip antenna, which has better radiation characteristics. The first transmitting antenna and the second transmitting antenna are oriented differently in space.

[0033] Please see Figure 2 , Figure 2 A flowchart illustrating the steps of dual-antenna diversity transmission provided in Embodiment 1 of this application. Step S12 includes: S121, in response to the clothes drying rack control operation, acquire the signal strength of the first transmitting antenna and the second transmitting antenna.

[0034] Before the remote control terminal performs radio frequency transmission, it selects one of the first transmitting antenna and the second transmitting antenna to transmit. Specifically, it acquires the signal strength of the first transmitting antenna and the second transmitting antenna, wherein the signal strength is the Received Signal Strength Indication value (RSSI value).

[0035] In one embodiment, the remote control terminal includes an RF switching circuit for sequentially connecting the signal channel to the first transmitting antenna and the second transmitting antenna. During a brief period after each switch, the remote control terminal monitors and calculates the RSSI values ​​of the first and second transmitting antennas, respectively. This value reflects the channel environment quality perceived from the antenna's perspective at a specific moment, and its value is related to path loss, obstruction, and interference intensity.

[0036] S122, Select the antenna with stronger signal strength among the first transmitting antenna and the second transmitting antenna to transmit the signal, and send the control command corresponding to the clothes drying machine control operation to the clothes drying machine through the plurality of communication frequency points respectively.

[0037] After calculating the RSSI value of the transmitting antenna using the method described in the above embodiment, the magnitudes of the RSSI values ​​are compared, and the antenna with the higher RSSI value is selected as the antenna used for signal transmission.

[0038] In this embodiment, by detecting the signal strength of the dual transmitting antennas and selecting the better antenna for signal transmission, the transmission reliability can be effectively improved.

[0039] The clothes drying rack is controlled by the user via a remote control (e.g., pressing physical buttons, touching the touchscreen interface, or voice input) to trigger specific functions, such as "raise," "lower," or "start disinfection." Each control operation corresponds to a control command.

[0040] In one embodiment, the control command is encoded and packetized into at least one data packet before being sent. The data packet contains data identifying the target clothes dryer, the command type, and verification information.

[0041] In one embodiment, based on the function code corresponding to the clothes drying machine control operation (e.g., 0x01 for an upward operation and 0x02 for a downward operation), the device address code, and the frame header and trailer information, a raw data frame is assembled according to a preset communication protocol format. Next, a Cyclic Redundancy Check (CRC) is applied to the raw data frame to generate the corresponding data packet. Specifically, the CRC-16 algorithm is used to calculate a two-byte (16-bit) checksum for all bytes of the raw data frame, and this checksum is appended to the end of the raw data frame to improve the confidentiality and accuracy of single-packet data.

[0042] Next, the data packet is encoded. In one embodiment, the data packet is Manchester encoded. Manchester encoding is a commonly used bit synchronization encoding method. Under this encoding rule, a level transition must occur in the middle of each binary bit: for example, a transition of "high level in the first half of the bit period and low level in the second half" can be used to represent bit "1", while a transition of "low level in the first half of the bit period and high level in the second half" can be used to represent bit "0". This encoding method ensures that each bit has a definite level transition edge, which itself can serve as a clock synchronization signal during decoding at the receiving end, thereby overcoming the bit synchronization problem caused by channel delay or clock drift. At the same time, since the information is represented by the transition direction rather than the absolute level, it can effectively suppress the influence of pulse interference and DC components on signal decision.

[0043] Finally, the Manchester-encoded data stream is sent to the radio frequency transmission module, where it is modulated and transmitted at various communication frequencies according to the aforementioned frequency hopping channel list and the preferred transmitting antenna. Correspondingly, the clothes drying machine demodulates and Manchester-decodes the received signal, then performs CRC checks on the decoded data packets to determine if they are normal data packets.

[0044] In this embodiment, the combination of Manchester encoding and CRC check effectively improves the security and reliability of data packets and reduces the probability of packet loss.

[0045] In one embodiment, data packets containing instructions are sequentially transmitted through the plurality of communication frequencies, and the data packets are radiated outward through a selected transmitting antenna, thereby enabling the same control instruction to be transmitted at multiple frequencies and using an antenna with a stronger signal to improve transmission efficiency and success rate.

[0046] In this embodiment, two transmitting antennas are set at the remote control end, and a dual-antenna diversity mechanism is adopted. By selecting the antenna with better signal, the transmission path of the signal is optimized, ensuring that the system can transmit in a better state under various environmental conditions, including signal transmission quality, thus improving link stability.

[0047] In one embodiment, the remote control terminal includes at least two wireless communication modules.

[0048] The method further includes: The packet loss rate of communication between the remote control and the clothes drying machine within a preset time period is detected and calculated. If the packet loss rate is lower than a preset communication quality threshold, the wireless communication module of the remote control is switched.

[0049] In one embodiment, the wireless communication module includes a radio frequency transceiver module, a Bluetooth module, and / or a Wi-Fi module.

[0050] In one embodiment, during initial communication, the remote control and the clothes dryer first use the radio frequency transceiver module for signal transmission and reception. The radio frequency transceiver module can be a 433MHz radio frequency transceiver as described in the above embodiment.

[0051] When communicating via a frequency-hopping channel, the packet loss rate of communication between the remote control and the clothes dryer within a preset time period is detected and calculated. The preset time period can be a sliding statistical window, such as the last 10 communication events or communication events occurring within the last minute. The packet loss rate is calculated based on the ratio of packet loss occurrences in the communication events to the total number of occurrences, thereby measuring the quality of radio frequency communication under the current conditions. If the packet loss rate is lower than a preset communication quality threshold, such as 30% or 40%, it indicates low radio frequency communication quality, and the control commands are then transmitted wirelessly, i.e., via Bluetooth and / or Wi-Fi protocols.

[0052] In this embodiment, by using multi-mode fusion, communication events are switched to a backup wireless module (such as BLE / Wi-Fi) that operates in a completely different frequency band and protocol, which can completely avoid the strong global interference of the 433MHz frequency band and provide a heterogeneous and highly reliable communication path.

[0053] For step S13, receive the operation success signal sent by the clothes drying machine and indicate that the operation was successful.

[0054] The operation success signal (ACK) is a short, formatted wireless signal that the clothes drying machine actively replies to the remote control after successfully receiving and validally determining a control command. The operation success signal can be a transmission of the command or a specific acknowledgment code.

[0055] After the remote control completes one round of data packet transmission according to the frequency hopping channel list, it opens a short receiving window and continuously listens for a preset duration (e.g., 20ms) to receive the operation success signal from the clothes drying machine. After the clothes drying machine effectively judges the control command, it generates an ACK signal and sends it to the remote control. Upon receiving the ACK signal, the remote control indicates that the operation was successful.

[0056] In one embodiment, the remote control terminal includes a status indication module, which may include LED indicator lights, a buzzer, a vibration motor, etc.

[0057] In one embodiment, the LED indicator light remains constantly lit to indicate successful operation.

[0058] In another embodiment, the buzzer emits a sound of a preset duration to indicate successful operation.

[0059] In yet another embodiment, the vibration motor is made to vibrate for a preset duration to indicate successful operation.

[0060] In this embodiment, by introducing a confirmation mechanism at the communication link layer, the traditional one-way broadcast is upgraded to a reliable two-way handshake. The remote control terminal changes from "sending but not receiving" to "sending and waiting for confirmation," which provides a clear communication-level criterion for determining the success or failure of each operation. It directly solves the core pain point in the background technology that "the user cannot know whether the command has been successfully received," eliminating uncertainty at the system level.

[0061] In one embodiment, if the operation success signal from the clothes drying machine is not received within a preset time, the control command is resent using a preset signal transmission strategy.

[0062] The preset time can be set to 20ms. That is, in the above embodiment, after the remote control terminal completes one round of data packet transmission according to the frequency hopping channel list, it opens a short receiving window and continuously listens for a preset duration (e.g., 20ms). If no ACK signal is received from the clothes drying machine within this time, the communication attempt is considered to have failed.

[0063] The step of retransmitting the control command using a preset signal transmission strategy includes: The transmission power is adjusted according to a preset power adjustment strategy, and the control command is retransmitted using the adjusted transmission power.

[0064] In one embodiment, the strategy is a "step-by-step" mode: the RF transmitter module at the remote control end has programmable transmit power levels. A base power level (e.g., 0dBm) is used for the initial transmission. When a retransmission is triggered, the microcontroller controls the RF module to increase the transmit power by a preset step value (e.g., +3dB), and then re-executes a frequency hopping transmission process at the new, higher power level, i.e., retransmitting control commands through the various frequencies in the original frequency hopping channel list. This process can be repeated until the maximum safe transmit power allowed by the RF module is reached.

[0065] In another embodiment, the control command is retransmitted using a preset signal transmission strategy, including: Obtain the second frequency hopping channel list; wherein, the second frequency hopping channel list includes several spare communication frequencies; The data packets are sent to the clothes drying machine via the several backup communication frequencies.

[0066] The second frequency hopping channel list is formed by selecting several backup communication frequencies with the least interference intensity from the frequency band after filtering out the communication frequencies included in the frequency hopping channel list.

[0067] The above strategies can be applied independently or in combination. When applied in combination, the remote control terminal can first try to increase the power and retransmit using the communication frequency in the frequency hopping channel list. If the first attempt fails, the transmission power is increased again, and the terminal switches to the second frequency hopping channel list to transmit using the backup communication frequency, thereby attempting to retransmit.

[0068] In this embodiment, the system can not only indicate communication failure by not receiving an ACK, but also immediately execute a preset, targeted signal transmission strategy to retransmit the signal multiple times. This changes the predicament of users passively pressing buttons multiple times in traditional solutions, automating and intelligently improving the recovery process and significantly increasing the probability of a single user operation ultimately succeeding.

[0069] Example 2 Please see Figure 3 , Figure 3 This is a flowchart illustrating the steps of a clothes drying rack control method provided in Embodiment 2 of this application.

[0070] This application provides a clothes drying rack control method, which is applied to a clothes drying rack. The following description uses the clothes drying rack as the execution subject in the method embodiment.

[0071] The method includes: S21, listens for and receives control commands sent by the remote control of the clothes dryer through several communication frequencies; S22, based on preset signal reception judgment conditions, the control command is effectively judged; S23, if the control command is determined to be valid, a successful operation signal is sent to the remote control terminal, and the corresponding clothes drying operation is executed according to the control command.

[0072] The clothes drying rack control method provided in this application monitors and receives signals from several communication frequencies in a frequency hopping channel list to obtain control commands sent by the remote control. It then determines the validity of the control commands based on preset signal reception judgment conditions. If the command is deemed valid, it sends a success signal back to the remote control and executes the corresponding clothes drying operation. This embodiment improves the reliability of command transmission and enhances the user experience by promptly responding to clothes drying operations and providing feedback to the user through validity judgment of control commands sent from multiple frequencies.

[0073] For step S21, listen to and receive control commands sent by the remote control of the clothes drying machine through several communication frequencies.

[0074] In one embodiment, step S21 includes: S211, in response to the clothes drying rack pairing signal, detects the interference intensity of each communication frequency point within the preset frequency band.

[0075] The clothes drying rack pairing signal is a signal triggered by the remote control or by a pairing event when the clothes drying rack and the remote control establish a communication connection for the first time.

[0076] In one embodiment, the preset frequency band is 430.0MHz to 434.0MHz.

[0077] The interference intensity is a comprehensive evaluation index assessed and quantified by one or more measurable indicators. In one embodiment, it is quantified by measuring the Received Signal Strength Indication (RSSI) value at the communication frequency. In other embodiments, the quantification index of the interference intensity may also include signal-to-noise ratio (SNR), bit error rate (BER), etc.

[0078] S212, sort the communication frequency points according to the magnitude of the interference intensity.

[0079] The clothes drying machine records and sorts the interference intensity corresponding to all frequency points within the preset frequency band, which can be sorted from smallest to largest. After sorting, an ordered list is obtained, where the frequency points at the top of the list have lower interference intensity and are better communication candidate channels.

[0080] S213, select several communication frequency points with the lowest interference intensity according to the sorting to form a frequency hopping channel list, and send the frequency hopping channel list to the remote control terminal.

[0081] From the ordered list, a predetermined number (e.g., 3-5) of communication frequencies are selected sequentially and arranged into a frequency hopping channel list. This frequency hopping channel list is then sent to the remote control terminal of the pre-controlled pair. The remote control terminal receives and stores the frequency hopping channel list, thereby completing the synchronization and configuration of the communication frequencies.

[0082] In this embodiment, in response to the clothes dryer pairing signal, the clothes dryer's radio frequency module scans the entire predefined operating frequency band (e.g., 430.0MHz to 434.0MHz). During this process, the clothes dryer listens for a preset time on multiple candidate frequency points to detect and evaluate the "interference intensity" of each frequency point. The "interference intensity" here is a comprehensive evaluation index, primarily quantified by measuring the background noise level of the frequency point (i.e., the Received Signal Strength Indication value (RSSI), which mainly reflects environmental electromagnetic noise when there is no signal transmission of its own). The lower the interference intensity, the "cleaner" the frequency point is, and the less interference it is subject to from other wireless devices in the environment (such as neighboring remote controls, wireless doorbells, car tire pressure monitoring, etc.). After completing the scan, the clothes dryer's main control unit sorts the interference intensity measurements of each frequency point, selects several (e.g., 3 to 5) frequency points with the lowest interference intensity, and groups them sequentially or according to specific rules to form a "frequency hopping channel list." This list is essentially a preferred set of low-interference communication channels. Subsequently, the clothes dryer transmits this list to the remote control via a wireless link. After successfully receiving and storing the list, the remote control completes the configuration of the communication frequency resources, laying the foundation for frequency hopping transmission of all subsequent control commands.

[0083] In one embodiment, the clothes drying rack includes a first receiving antenna and a second receiving antenna.

[0084] The first receiving antenna and the second receiving antenna are respectively installed on the left and right sides of the clothes drying machine main unit or at both ends of the drying rod.

[0085] Step S21 further includes: Obtain the signal strength of the first receiving antenna and the second receiving antenna.

[0086] When receiving signals, one of the first receiving antennas and the second receiving antenna is selected for reception. Specifically, the signal strength of the first receiving antenna and the second receiving antenna is acquired, wherein the signal strength is the Received Signal Strength Indication value (RSSI value).

[0087] The method for obtaining the signal strength of the first receiving antenna and the second receiving antenna is largely the same as the method for obtaining the signal strength of the first transmitting antenna and the second transmitting antenna provided in the above embodiments, and will not be described again here.

[0088] The antenna with the stronger signal strength between the first and second receiving antennas is selected to listen to and receive control commands sent by the remote control of the clothes dryer through several communication frequencies.

[0089] After calculating the RSSI value of the receiving antenna using the method described in the above embodiment, the magnitudes of the RSSI values ​​are compared, and the antenna with the higher RSSI value is selected as the antenna used for signal reception.

[0090] In this embodiment, an antenna with strong signal strength is selected to listen to and receive control commands sent by the remote control of the clothes dryer through several communication frequencies. Subsequently, the clothes dryer's RF receiving module will consistently use this optimized antenna path to poll or scan all communication frequencies included in the frequency hopping channel list to capture data packets sent by the remote control via frequency hopping. This dual-antenna diversity approach significantly improves the received signal-to-noise ratio and reduces the bit error rate.

[0091] According to the inventive concept of this application, the method further includes: Continuously collect and record historical communication data generated by communication with the remote control terminal and its corresponding historical environmental information, and upload the historical communication data and its corresponding historical environmental information to the cloud.

[0092] The communication data refers to a set of data representing communication quality generated and recorded during historical communication between the clothes dryer and the remote control terminal. In one embodiment, the data set includes, but is not limited to: packet loss rate (the proportion of commands sent without receiving an ACK), bit error rate (the proportion of received data packets that are found to be erroneous by CRC check) in historical control events, Received Signal Strength Indicator (RSSI) values ​​measured at each monitoring frequency, the average number of retransmissions required for successful command reception, and the timestamp corresponding to the communication occurrence.

[0093] The historical environmental information refers to the external environmental state associated with each communication. In one embodiment, the historical environmental information includes, but is not limited to: the time of communication (the timestamp corresponding to the time of communication), weather conditions (e.g., sunny, rainy), regional power load level (e.g., peak, off-peak, low-peak), and the activity level of wireless devices in the surrounding area.

[0094] The cloud is a remote server cluster. In one embodiment, the clothes drying rack establishes a wireless communication connection with the cloud.

[0095] Receive the communication frequency update instruction issued by the cloud based on real-time environmental information, and update the selected communication frequencies according to the communication frequency update instruction.

[0096] The cloud platform trains an interference prediction model based on the historical communication data and the historical environmental information, and generates and issues a communication frequency update command based on the calculation results of the interference prediction model by inputting the real-time environmental information into the model.

[0097] The clothes drying racks upload the aforementioned historical communication data and corresponding historical environmental information to the cloud server according to a preset reporting cycle (e.g., once every 24 hours) or during network off-peak hours. After receiving the massive amount of data from multiple clothes drying racks, the cloud server uses it as a training sample set. The historical environmental information serves as the model input feature, while the actual interference intensity of each frequency point in the historical communication data (e.g., mean RSSI, packet loss rate, etc.) serves as the label for supervised learning, training an interference prediction model. This interference prediction model is a machine learning model (e.g., neural network, random forest) capable of learning the interference distribution patterns of each candidate frequency point under different environmental conditions. Its input is environmental information, and its output is the predicted interference intensity value of each candidate frequency point under a given environment.

[0098] Subsequently, the cloud server acquires real-time environmental information. This real-time environmental information refers to the external environmental state at the current moment or within a short future period. Its data type is consistent with historical environmental information and can be obtained from sources such as meteorological service APIs, system clocks, and power dispatch platforms. The cloud inputs this real-time environmental information into a pre-trained interference prediction model, which outputs predicted interference intensity values ​​for each communication frequency point within a short future period. Based on these predictions, the cloud determines whether the currently used frequency point is likely to be severely interfered with: if the predicted interference intensity of a frequency point exceeds a preset threshold, or the overall frequency point quality is inferior to the backup frequency point combination, then the frequency point switching conditions are met. At this time, the cloud automatically generates a communication frequency point update command, which includes a new list of low-interference frequency points (i.e., a frequency hopping channel list) and sends it to the corresponding clothes dryer via the wireless network.

[0099] In one embodiment, based on the real-time environmental information, if it is determined that the frequency switching conditions are met, the interference intensity of each communication frequency point within the preset frequency band is obtained, several communication frequency points with the lowest interference intensity are selected, and packaged into a communication frequency point update instruction to realize the switching of communication frequency points.

[0100] In another embodiment, the predicted interference intensity values ​​of each communication frequency point within a preset frequency band are obtained based on the real-time environmental information. Several communication frequency points with the smallest predicted interference intensity values ​​are selected and packaged into a communication frequency point update instruction to realize the switching of communication frequency points.

[0101] Upon receiving the communication frequency update command, the clothes dryer immediately parses the command content, updates its locally stored frequency hopping channel list, and replaces the original frequency with the new frequency specified in the command. Subsequently, in subsequent communications with the remote control, the clothes dryer prioritizes using the updated frequency for frequency hopping communication, effectively avoiding interference sources and improving communication reliability and anti-interference capabilities.

[0102] In this embodiment, through cloud-based big data training and prediction, the system can switch to the predicted frequency point in advance before strong interference occurs, thereby effectively eliminating the interference effects that may be caused by environmental changes.

[0103] For step S22, the control command is effectively judged based on the preset signal reception judgment conditions.

[0104] In one embodiment, step S22 includes: S221, compare the data of the control commands sent at the several communication frequency points within the preset signal period.

[0105] The signal period is a time window set for the clothes drying machine to receive a complete round of frequency-modulated data. The length of the signal period is determined based on the number of communication frequencies in the frequency hopping channel list and the listening time spent on each frequency, ensuring that it covers a complete round of signal transmission.

[0106] In one embodiment, the main control module of the clothes dryer establishes a preset sliding window for temporarily storing data packets successfully received within a preset signal period.

[0107] The data comparison involves comparing the data packets corresponding to the control commands.

[0108] S222, if at least two identical control commands exist within the signal period, the control commands are determined to be valid.

[0109] For step S23, if the control command is determined to be valid, an operation success signal is sent to the remote control terminal, and the corresponding clothes drying operation is executed according to the control command.

[0110] In this embodiment, as long as two or more identical control commands are found in the buffer window, regardless of whether they come from consecutive reception times or the same frequency, the system determines that the user's true control intention has been reliably captured, and the command is considered a valid command. The system then clears the current buffer queue, prepares for the next decision, and triggers the subsequent steps of "sending an operation success signal to the remote control" and "performing the clothes-drying operation." If all data packets in the window are different, or if only one valid data packet is found, it is determined that no valid command was received in this signal cycle, and the system waits for the next communication attempt.

[0111] In this embodiment, the existing solution of only considering two consecutive identical instructions as valid instructions is adjusted to determine that any two control instructions with identical data within a preset period are valid control instructions, thereby further improving the reliability of signal transmission and reception.

[0112] The clothes drying rack control method provided in this application lays an optimized frequency domain foundation for communication by having the clothes drying rack actively scan for environmental interference and generate a frequency hopping channel list during pairing, which is then sent to the remote control. When the remote control responds to a control operation, it selectively hops between multiple high-quality frequencies to send the same control command. The clothes drying rack listens at the corresponding frequencies using antenna selection and employs a sliding window comparison mechanism to intelligently judge the received command copy. Once valid, it replies with a confirmation signal and executes the corresponding operation. Simultaneously, the system ensures reliable command delivery through a two-way handshake and a power / channel adaptive retransmission mechanism, and can achieve forward-looking optimization and backup through cloud-based interference prediction and multi-mode switching technology.

[0113] The clothes drying rack control method of this application upgrades the traditional fixed-frequency one-way communication into an intelligent control system that can dynamically avoid interference, intelligently restore the link, and has the ability to learn and evolve. It fundamentally solves the problems of command code loss and unresponsiveness in complex electromagnetic environments, significantly improves the success rate of user control and the user experience, and provides an effective technical path for reliable wireless control of smart home devices.

[0114] Example 3 Please see Figure 4 , Figure 4 This is a schematic diagram of a clothes drying rack system provided in Embodiment 3 of this application. This embodiment of the application provides a clothes drying rack 100, including a remote control terminal 200 and a clothes drying rack 300, wherein the remote control terminal 200 is communicatively connected to the clothes drying rack 300. The remote control terminal 200 and the clothes drying rack 300 are used to execute the steps of the clothes drying rack control method described in any of the above embodiments.

[0115] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A clothes drying rack control method, applied to the remote control terminal of the clothes drying rack, characterized in that, include: In response to a clothes drying rack pairing signal, a list of frequency hopping channels sent by the clothes drying rack is obtained; wherein, the list of frequency hopping channels includes several communication frequency points; In response to the clothes drying rack control operation, the control command corresponding to the clothes drying rack control operation is sent to the clothes drying rack through the plurality of communication frequency points respectively; The system receives an operation success signal from the clothes drying machine and displays a message indicating that the operation was successful; wherein the operation success signal is used to indicate that the clothes drying machine has successfully received control commands sent from at least one of the communication frequency points.

2. The clothes drying rack control method according to claim 1, characterized in that, The remote control terminal includes a first transmitting antenna and a second transmitting antenna; The step of responding to a clothes drying rack control operation by sending the control command corresponding to the clothes drying rack control operation to the clothes drying rack via the plurality of communication frequencies includes: In response to the clothes drying rack control operation, the signal strengths of the first transmitting antenna and the second transmitting antenna are acquired; The antenna with the stronger signal strength among the first and second transmitting antennas is selected for signal transmission, and the control commands corresponding to the clothes drying machine control operation are sent to the clothes drying machine through the plurality of communication frequency points respectively.

3. The clothes drying rack control method according to claim 2, characterized in that, The remote control terminal includes at least two wireless communication modules; The method further includes: The packet loss rate of communication between the remote control and the clothes drying machine within a preset time period is detected and calculated. If the packet loss rate is lower than a preset communication quality threshold, the wireless communication module of the remote control is switched.

4. The clothes drying rack control method according to claim 1, characterized in that, If the operation success signal from the clothes drying machine is not received within a preset time, the control command will be resent using a preset signal transmission strategy. The step of retransmitting the control command using a preset signal transmission strategy includes: The transmission power is adjusted according to a preset power adjustment strategy, and the control command is retransmitted using the adjusted transmission power; And / or, Obtain the second frequency hopping channel list; wherein, the second frequency hopping channel list includes several spare communication frequencies; The data packets are sent to the clothes drying machine through the several backup communication frequencies.

5. A clothes drying rack control method, applied to a clothes drying rack, characterized in that, include: Listen to and receive control commands sent by the remote control of the clothes drying rack through several communication frequencies; The control command is effectively judged based on preset signal reception judgment conditions. If the control command is deemed valid, a success signal is sent to the remote control terminal, and the corresponding clothes-drying operation is executed according to the control command.

6. The clothes drying rack control method according to claim 5, characterized in that, The determination of the validity of the control command based on preset signal reception judgment conditions includes: Data comparison is performed on the control commands sent at the several communication frequency points within the preset signal period; If at least two identical control commands exist within the signal period, the control commands are deemed valid.

7. The clothes drying rack control method according to claim 5, characterized in that, The control commands sent by the remote control of the clothes drying rack via several communication frequencies include: In response to the clothes drying rack pairing signal, the interference intensity of each communication frequency point within the preset frequency band is detected; The communication frequency points are sorted according to the magnitude of the interference intensity. Based on the sorting, several communication frequency points with the lowest interference intensity are selected in sequence to form a frequency hopping channel list, and the frequency hopping channel list is sent to the remote control terminal.

8. The clothes drying rack control method according to claim 7, characterized in that, The method further includes: Continuously collect and record historical communication data generated by communication with the remote control terminal and its corresponding historical environment information, and upload the historical communication data and its corresponding historical environment information to the cloud; The system receives a communication frequency update instruction from the cloud based on real-time environmental information, and updates the selected communication frequencies according to the communication frequency update instruction. The cloud trains an interference prediction model based on the historical communication data and the historical environmental information, and generates and sends the communication frequency update instruction based on the calculation result of inputting the real-time environmental information into the interference prediction model.

9. The clothes drying rack control method according to claim 5, characterized in that, The clothes drying rack includes a first receiving antenna and a second receiving antenna; The control commands sent by the remote control of the clothes drying rack via several communication frequencies include: Obtain the signal strengths of the first receiving antenna and the second receiving antenna; The antenna with the stronger signal strength between the first and second receiving antennas is selected to listen to and receive control commands sent by the remote control of the clothes dryer through several communication frequencies.

10. A clothes drying rack system, characterized in that, It includes a remote control terminal and a clothes drying rack, wherein the remote control terminal is communicatively connected to the clothes drying rack; The remote control terminal is used to perform the steps of the clothes drying rack control method as described in any one of claims 1 to 4, and the clothes drying rack is used to perform the steps of the clothes drying rack control method as described in any one of claims 5 to 9.

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