WO2023087444A1 - 一种衣物数量检测方法、装置、衣物护理机及存储介质 - Google Patents

一种衣物数量检测方法、装置、衣物护理机及存储介质 Download PDF

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Publication number
WO2023087444A1
WO2023087444A1 PCT/CN2021/137633 CN2021137633W WO2023087444A1 WO 2023087444 A1 WO2023087444 A1 WO 2023087444A1 CN 2021137633 W CN2021137633 W CN 2021137633W WO 2023087444 A1 WO2023087444 A1 WO 2023087444A1
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Prior art keywords
clothes
ultrasonic
threshold
care machine
echo signals
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PCT/CN2021/137633
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English (en)
French (fr)
Inventor
王世宇
方化
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广州视源电子科技股份有限公司
广州易家智能电子科技有限公司
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Publication of WO2023087444A1 publication Critical patent/WO2023087444A1/zh

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/04—Signal transfer or data transmission arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/48—Control of the energy consumption
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/56—Remaining operation time; Remaining operational cycles

Definitions

  • the embodiments of the present application relate to the technical field of ultrasonic detection, and in particular to a method and device for detecting the number of clothes, a clothes care machine and a storage medium.
  • Existing clothes care machines can determine the number of clothes inside the car body of the care machine, and adapt to adjust the running time according to the determined number of clothes, so as to effectively control power consumption and improve user experience.
  • the clothes care machine detects the number of clothes by: controlling the transmitting end of the closed ultrasonic detection device to send ultrasonic signals, correspondingly, determining the echo time of the echo signal received by the receiving end of the closed ultrasonic detection device, and according to Echo time determines whether each hanger is hung with clothes, so as to count the number of clothes inside the cabinet.
  • the ultrasonic signal sent by the transmitting end of the closed ultrasonic detection device is easily transmitted to the receiving end through the probe shell structure, circuit, etc., and the ultrasonic signal may also be absorbed by obstacles in the rest of the clothing detection area during the propagation process.
  • the reception of the signal causes interference, which in turn affects the accuracy of the detection of the number of clothes, resulting in misjudgment. Therefore, the accuracy of the above method for determining the amount of laundry is relatively low.
  • the embodiments of the present application provide a method and device for detecting the number of clothes, a clothes care machine and a storage medium, which solve the problem of low accuracy of the number of clothes in the existing clothes care machine.
  • the embodiment of the present application provides a method for detecting the number of clothes, which is applied to a clothing care machine including N (N is a positive integer greater than or equal to 2) enclosed ultrasonic transceivers, the enclosed ultrasonic transceivers and The clothes detection area in the cabinet of the clothes care machine is set correspondingly.
  • the method for detecting the amount of clothes includes: determining the number of echo signals of a specified type acquired by each enclosed ultrasonic transceiver within a respective sampling time length, and determining the number of echo signals of a specified type according to the determined number of echo signals of a specified type
  • a target value the target value is used to represent the sum of the number of echo signals of a specified type acquired by each enclosed ultrasonic transceiver; then, according to the target value, the number of clothes in the cabinet of the clothes care machine is determined.
  • the echo signal is the signal after the ultrasonic signal sent by the closed ultrasonic transceiver is reflected by the obstacle.
  • the number of echo signals of a specified type corresponds to the number of clothes.
  • the method for detecting the number of clothes detects the number of clothes by counting the number of echo signals of a specified type in the entire clothing care machine cabinet, effectively avoiding the interference of echo signals in various areas in the cabinet of the clothes care machine. Influence, to avoid the signal interference problem caused by detecting clothes by echo time, thereby improving the detection accuracy of clothes quantity.
  • the running time of the clothes care machine can be adaptively adjusted according to the number of clothes accurately detected during subsequent clothes care, so as to ensure that the clothes care machine can accurately adjust the running time and avoid clothes
  • the long running time of the care machine leads to waste of energy consumption, optimize the energy efficiency management effect of the clothes care machine, and optimize the user experience.
  • the above "determining the number of clothes in the cabinet of the clothes care machine according to the target value” includes:
  • the target value is greater than or equal to the first threshold, determine that the number of clothes is zero; if the target value is greater than the second threshold and less than the first threshold (the second threshold is less than the first threshold), determine that the number of clothes is one; if the target value is less than or Equal to the third threshold (the third threshold is less than the second threshold), determine that the number of clothes is N; if the target value is less than the second threshold and greater than the third threshold, determine that the number of clothes is greater than 1 and less than N.
  • the method for detecting the number of clothes further includes: determining a first closed ultrasonic transceiver, and the first closed ultrasonic transceiver is at least two closed ultrasonic transceivers.
  • the enclosed ultrasonic transceiver that receives the specified type of echo signals with the smallest number; after that, it is determined that the clothing in the cabinet of the clothing care machine is located in the clothing detection area corresponding to the first enclosed ultrasonic transceiver, that is, the first Clothes are hung on the hanger corresponding to the enclosed ultrasonic transceiver.
  • determining that the number of clothes is greater than 1 and less than N includes: determining that the number of clothes is two.
  • the method for detecting the number of clothes further includes: determining a second closed ultrasonic transceiver, the second closed ultrasonic transceiver is three closed ultrasonic transceivers The enclosed ultrasonic transceiver that has received the largest number of echo signals of the specified type in the device; subsequently, determine that there is no clothing in the clothing detection area corresponding to the second enclosed ultrasonic transceiver in the cabinet of the clothing care machine, that is, determine the second There is no clothing on the hanger corresponding to the enclosed ultrasonic transceiver.
  • the above-mentioned "determining the number of echo signals of a specified type acquired by each enclosed ultrasonic transceiver within the respective sampling duration" includes: The number of echo signals of a specified type acquired by the type ultrasonic transceiver, and the ultrasonic signal transmission timing is used to control each closed ultrasonic transceiver to send ultrasonic signals at the corresponding ultrasonic signal transmission timing.
  • the above-mentioned "determining the number of echo signals of a specified type acquired by each enclosed ultrasonic transceiver within the respective sampling duration" includes: determining the first moment, and starting from the first moment From the start, the received echo signals are sampled according to the preset frequency within the sampling duration; after that, the number of echo signals of a specified type among the sampled echo signals is determined.
  • the first moment here is the moment when the closed ultrasonic transceiver receives the first echo signal of a specified type.
  • the echo signal of the above specified type is an echo signal in a low level state.
  • the echo signal of the above-mentioned specified type may also be another type of signal, which is not specifically limited in this embodiment of the present application.
  • the embodiment of the present application provides a clothing quantity detection device, which is applied to a clothing care machine including N (N is a positive integer greater than or equal to 2) enclosed ultrasonic transceivers, and the enclosed ultrasonic transceivers and The clothes detection area in the cabinet of the clothes care machine is set correspondingly.
  • the laundry quantity detection device includes an acquisition module, a statistics module and a determination module.
  • the acquiring module is configured to determine the quantity of echo signals of a specified type acquired by each enclosed ultrasonic transceiver within the respective sampling time length.
  • the statistical module is used to determine the target value according to the determined number of echo signals of a specified type, and the target value is used to represent the sum of the numbers of echo signals of a specified type acquired by each enclosed ultrasonic transceiver.
  • the determination module is used to determine the quantity of clothes in the cabinet of the clothes care machine according to the target value.
  • the echo signal is a signal after the ultrasonic signal sent by the closed ultrasonic transceiver is reflected by an obstacle.
  • the above determination module is specifically used for:
  • the target value is greater than the second threshold and less than the first threshold (the second threshold is less than the first threshold), determine that the number of clothes is one; and after determining that the number of clothes is 1, determine the first closed ultrasonic transceiver, the first The enclosed ultrasonic transceiver is the enclosed ultrasonic transceiver with the smallest number of echo signals of the specified type among at least two enclosed ultrasonic transceivers; after that, it is determined that the clothes in the cabinet of the clothing care machine are located in the first enclosed ultrasonic transceiver.
  • the clothing detection area corresponding to the transceiver is to determine that there are clothes hanging on the hanger corresponding to the first closed ultrasonic transceiver.
  • the third threshold is less than the second threshold
  • the number of clothes is N; if the target value is less than the second threshold and greater than the third threshold, it is determined that the number of clothes is greater than 1 and less than N.
  • the target value is less than the second threshold and greater than the third threshold.
  • the determination module is specifically used to determine the second closed ultrasonic Transceiver, the second closed ultrasonic transceiver is the closed ultrasonic transceiver that receives the largest number of echo signals of the specified type among the three closed ultrasonic transceivers; determine the cabinet of the clothing care machine, which is located in the second closed There is no clothing in the clothing detection area corresponding to the ultrasonic transceiver.
  • the above-mentioned acquisition module is specifically used to: sequentially determine the number of echo signals of a specified type acquired by each closed ultrasonic transceiver based on the ultrasonic signal transmission timing, and the ultrasonic signal transmission timing is used to control Each enclosed ultrasonic transceiver sends ultrasonic signals at corresponding ultrasonic signal sending timings.
  • the above acquisition module is specifically used to: determine the first moment, the first moment is the moment when the closed ultrasonic transceiver receives the first echo signal of a specified type; and from the first moment , to sample the received echo signals at a preset frequency within the sampling duration; and then determine the number of echo signals of a specified type among the sampled echo signals.
  • the first moment here is the moment when the closed ultrasonic transceiver receives the first echo signal of a specified type.
  • the echo signal of the above specified type is an echo signal in a low level state.
  • the embodiment of the present application provides a clothes care machine
  • the clothes care machine includes: N closed ultrasonic transceivers, memory and processor, N is a positive integer greater than or equal to 2, the closed An ultrasonic transceiver is connected to the processor.
  • the memory is used for storing computer-executable instructions.
  • the processor is used to invoke the computer-executed instructions and control the operation of the enclosed ultrasonic transceiver, so that when the clothes care machine is running, the computer-executed instructions are executed to realize the detection of the number of clothes according to the first aspect method.
  • the embodiment of the present application provides a computer-readable storage medium, including computer instructions, when the computer instructions are run on the clothes care machine, the clothes care machine is made to perform the detection of the number of clothes in the first aspect method.
  • the embodiment of the present application provides a computer program product, the computer program product includes computer instructions, and when the computer instructions are run on the clothes care machine, the clothes care machine is executed as described in the first aspect and any one thereof.
  • FIG. 1 is a flow chart of a method for detecting the number of clothes provided in an embodiment of the present application
  • Fig. 2 is a schematic diagram of the connection between the clothes quantity detection device and the ultrasonic board in the embodiment of the present application;
  • Fig. 3 is a flow chart of a method for detecting the number of clothes provided by an embodiment of the present application
  • Fig. 4 is a schematic diagram of an echo signal in an embodiment of the present application.
  • Fig. 5 is a schematic diagram of an echo signal in an embodiment of the present application.
  • Fig. 6 is a flow chart of counting low-level times in the embodiment of the present application.
  • Fig. 7 is a flow chart of detecting the number of clothes of the clothes care machine in the embodiment of the present application.
  • Fig. 8 is a flow chart of clothes position detection in the embodiment of the present application.
  • Fig. 9 is another flow chart of clothes position detection in the embodiment of the present application.
  • Fig. 10 is a flow chart of quantity sampling of specified types of echo signals in the embodiment of the present application.
  • Fig. 11 is a schematic structural diagram of a clothes quantity detection device provided by an embodiment of the present application.
  • Fig. 12 is a schematic structural connection diagram of a clothes care machine provided by an embodiment of the present application.
  • first and second are only used to distinguish one entity or operation or object from another entity or operation or object, and do not necessarily require or imply these Any such actual relationship or order exists before entities or operations or objects.
  • first and second in the first touch operation and the second touch operation are used to distinguish two interactive operations of touching the screen cover at different times.
  • the traditional clothing care machine when detecting the number of clothes, it generally sends an ultrasonic signal through a closed ultrasonic detection device, and by determining the echo duration of the received echo signal, based on the echo duration determination and the closed type Whether there are clothes in the area corresponding to the ultrasonic detection device, and determine the number of clothes according to the clothes detection results in each area.
  • the closed ultrasonic detection device transmits the ultrasonic signal
  • the ultrasonic signal is easily transmitted to the receiving end through the probe shell structure, circuit, etc.
  • the ultrasonic signal may also be absorbed by obstacles in the rest of the clothing detection area during the propagation process, thereby affecting The reception of the echo signal causes interference, which affects the accuracy of the clothes detection result, which in turn leads to misjudgment of the amount of clothes.
  • a method for detecting the number of clothes in an embodiment of the present application is provided to solve the problem of misjudgment of the number of clothes in the existing clothes care machine.
  • a method for detecting the number of clothes provided by this application aims at counting the number of echo signals of a specified type received by each enclosed ultrasonic transceiver, and using the number of clothes placed in the cabinet of the clothes care machine to correspond to the number of echo signals of a designated type The characteristics, and then analyze the amount of clothes in the cabinet of the clothes care machine through the total amount of echo signals of the specified type, so as to realize the accurate detection of the number of clothes.
  • the ultrasonic signal is a part of the sound wave, which is inaudible to the human ear and has a frequency higher than 20KHZ. It is produced by the vibration of the material and can only propagate in the medium. When an ultrasonic signal encounters an obstacle during propagation, it will be reflected back to the closed ultrasonic transceiver, and this signal is the echo signal.
  • the embodiment of the present application receives this echo signal, utilizes the characteristic that the number of clothes placed in the cabinet of the clothing care machine corresponds to the number of echo signals of a specified type, and calculates the number of echo signals of a specified type in each echo signal to accurately The number of clothes in the clothes care machine cabinet is detected.
  • Fig. 1 shows a schematic structural diagram of a clothes care machine. As shown in FIG. 1 , an ultrasonic plate 11 and a clothes hanger 12 are arranged in the tank of the clothes care machine. Clothes hanger 12 is used for hanging clothes. When the clothes care machine is running, use the spraying, drying and other equipment installed in the tank to perform clothes care operations, so as to realize the clothes care function of the clothes care machine.
  • the ultrasonic board 11 can be installed on the backboard inside the airtight box (that is, installed on the backboard opposite the door panel); it can also be installed on the top of the airtight box, and can also be arranged on the bottom of the airtight box. It can also be set on the door panel, and the embodiment of the present application does not make fixed restrictions on its specific setting position.
  • the position of the ultrasonic plate 11 shown in FIG. 1 is taken as an example at the back plate inside the airtight box.
  • Each closed ultrasonic transceiver can include a sending probe 111 and a receiving probe 112, and its setting position corresponds to the setting position of the clothes hanger 12, so as to send ultrasonic signals through the area corresponding to the clothes hanger 12 through the closed ultrasonic transceiver, and then carry out the process through the echo signal.
  • Clothes quantity detection can include a sending probe 111 and a receiving probe 112, and its setting position corresponds to the setting position of the clothes hanger 12, so as to send ultrasonic signals through the area corresponding to the clothes hanger 12 through the closed ultrasonic transceiver, and then carry out the process through the echo signal.
  • the enclosed ultrasonic transceiver is installed at the backboard inside the airtight box, and the height is two centimeters below the clothes hanger. In this way, echo signal detection can be performed corresponding to clothes of different lengths, and the effect of clothes quantity detection can be optimized.
  • a group of closed ultrasonic transceivers is correspondingly set, so as to realize the ultrasonic signal transmission and echo of the closed ultrasonic transceiver corresponding to the clothing detection area. Signal reception, improving the accuracy of determining the amount of laundry.
  • the setting position of the closed ultrasonic transceiver can be adaptively adjusted to accurately send and receive signals corresponding to the clothes detection area.
  • Each enclosed ultrasonic transceiver in the embodiment of the present application is connected with the processor in the clothing care machine.
  • Figure 2 shows how each enclosed ultrasonic transceiver is connected to the processor in the laundry care machine.
  • take the clothing care machine including three enclosed ultrasonic transceivers (such as enclosed ultrasonic transceiver 1, enclosed ultrasonic transceiver 2, and enclosed ultrasonic transceiver 3) as an example.
  • the processor is connected to the transmitting probe Tx1 of the enclosed ultrasonic transceiver 1 through the port Tx1-io, and the processor is connected to the receiving probe Rx1 of the enclosed ultrasonic transceiver 1 through the port Rx1-io.
  • the processor is connected to the transmitting probe Tx2 of the enclosed ultrasonic transceiver 2 through the port Tx2-io, and the processor is connected to the receiving probe Rx2 of the enclosed ultrasonic transceiver 2 through the port Rx2-io.
  • the processor is connected to the transmitting probe Tx3 of the enclosed ultrasonic transceiver 3 through the port Tx3-io, and the processor is connected to the receiving probe Rx3 of the enclosed ultrasonic transceiver 3 through the port Rx1-io.
  • the clothes number detection device When detecting the number of clothes, the clothes number detection device sends a pulse signal to the sending probe corresponding to the closed ultrasonic transceiver, so that the ultrasonic sending probe sends an ultrasonic signal to its corresponding clothing detection area, and then passes through the receiving probe of the ultrasonic transceiver.
  • the echo signal of the ultrasonic signal is received, and based on the echo signal, the quantity of clothes in the current clothes care machine cabinet can be analyzed and determined.
  • FIG. 3 shows a flow chart of a method for detecting the number of clothes provided in Embodiment 1 of the present application.
  • the method for detecting the number of clothes provided in this embodiment can be executed by a device for detecting the number of clothes.
  • the laundry quantity detection device can be realized by means of software and/or hardware.
  • the clothes quantity detection device may be the above clothes care machine, or a processor in the clothes care machine, or a control module for detecting clothes quantity in the clothes care machine.
  • the laundry quantity detection device as the main body for executing the laundry quantity detection method as an example.
  • the method for detecting the number of clothes specifically includes:
  • S110 Determine the number of echo signals of a specified type acquired by each enclosed ultrasonic transceiver within a respective sampling time length.
  • the echo signal is the signal after the ultrasonic signal sent by the closed ultrasonic transceiver is reflected by the obstacle.
  • the number of echo signals of a specified type acquired by each enclosed ultrasonic transceiver is sequentially determined based on the ultrasonic signal transmission timing.
  • the ultrasonic signal sending timing is used to control each closed ultrasonic transceiver to send the ultrasonic signal at the corresponding ultrasonic signal sending timing.
  • the clothes quantity detecting device controls the enclosed ultrasonic signal transceivers to send and receive ultrasonic signals one by one based on the set timing according to the number of enclosed ultrasonic transceivers set in the clothing care machine cabinet.
  • the signal directivity is weak.
  • the clothing care machine is equipped with multiple closed ultrasonic transceivers to detect the number of clothes in multiple clothing detection areas, in order to avoid the mutual interference of signals in each clothing detection area when the closed ultrasonic transceivers perform ultrasonic signal detection in parallel, In turn, there are a large number of interference signals in the received echo signal, which interferes with the detection of the number of clothes of the current clothes care machine.
  • the ultrasonic signal transmission timing of each closed ultrasonic transceiver is preset, so that each closed ultrasonic transceiver sends ultrasonic signals at different time points in sequence.
  • each enclosed ultrasonic transceiver will also receive ultrasonic signals at different time points in sequence.
  • the clothes amount detection device needs to send a pulse signal with a set number, a set frequency, and a set duty cycle to the enclosed ultrasonic Transceiver, so that the enclosed ultrasonic transceiver sends the corresponding ultrasonic signal.
  • the set number, set frequency and duty cycle of pulse signal transmission can be pre-adaptively set.
  • the clothes number detection device when the present application detects the number of clothes, the clothes number detection device sends 8 pulse signals of 40KHz and a duty cycle of 50% to the sending probe to generate ultrasonic signals.
  • the closed ultrasonic transceiver sends the ultrasonic signal corresponding to the clothing detection area
  • the pulse signal is sent to the sending probe of the closed ultrasonic transceiver corresponding to the clothing detection area, In order to make the sending probe emit ultrasonic signals.
  • an obstacle will reflect the echo signal to the enclosed ultrasonic transceiver, and then receive the echo signal through the receiving probe of the enclosed ultrasonic transceiver.
  • the clothes quantity detecting device can further analyze and process the clothes quantity in the current clothes care machine cabinet according to the echo signals received by each closed ultrasonic transceiver by acquiring the echo signal of the ultrasonic signal.
  • the ultrasonic signal emitted by the transmitting probe 111 of the enclosed ultrasonic transceiver encounters Clothes 13
  • the echo signal will be reflected to the enclosed ultrasonic transceiver, that is, the receiving probe 112 can receive the echo signal.
  • the ultrasonic signal reaches the wall of the inner container of the clothing care machine, it will also be reflected as an echo signal.
  • the ultrasonic signal emitted by the sending probe 111 of the closed ultrasonic transceiver will reach the inner tank of the clothing care machine.
  • the echo signal is reflected by the wall to the enclosed ultrasonic transceiver, and the receiving probe 112 can receive the echo signal.
  • the closed ultrasonic transceiver will Echo signals with different signal characteristics are received. Moreover, depending on whether there is clothing in the corresponding area, the echo signals returned from the inner wall of the box have different signal characteristics due to the interference of different obstacles.
  • the closed ultrasonic transceiver has the characteristics of large signal transmission angle and weak signal directivity.
  • the ultrasonic signal will be reflected to other clothing detection areas, absorbed or reflected to the current enclosed ultrasonic transceiver.
  • the number of echo signals of the specified type will follow the change of the number of clothes in a corresponding fixed number.
  • Range that is, the number of echo signals of a specified type corresponds to the number of clothes.
  • the embodiment of the present application obtains the echo signals of the sampling duration received by each enclosed ultrasonic transceiver for analysis and processing, and then according to the number of specified types of echo signals, correspondingly determine the number of echo signals in the current clothing care machine cabinet. The number of laundry items.
  • the method for detecting the number of clothes provided by the embodiment of the present application can also set a sampling time according to the time period during which the echo signal changes with the number of clothes placed in the cabinet of the clothes care machine, so as to Each closed ultrasonic transceiver is made to acquire the echo signal received by the ultrasonic signal transceiver based on the sampling time length. In this way, it can be ensured that each echo signal accurately reflects the relative regularity of the waveform change of the echo signal when there is a corresponding number of clothes in the current clothing care machine cabinet.
  • the embodiment of the present application calculates the specified type of echo signals from the echo signals, and then determines according to the echo signals received by all closed ultrasonic transceivers in the clothing care machine.
  • the number of echo signals of a specified type is superimposed on the numbers of echo signals of each specified type to determine the sum of the numbers of echo signals of a specified type.
  • the cabinet of the clothing care machine can be determined by comparison. The amount of clothing in the body.
  • S120 Determine a target value according to the determined number of echo signals of a specified type, where the target value is used to represent the sum of the numbers of echo signals of a specified type acquired by each enclosed ultrasonic transceiver.
  • the clothing quantity detection device After determining the number of echo signals of a specified type acquired by each ultrasonic transceiver, the clothing quantity detection device counts the sum of the echo signals of each specified type (ie, the target value) for subsequent detection of the clothing quantity.
  • the target value can be obtained by directly adding the number of echo signals of a specified type obtained by each enclosed ultrasonic transceiver, or it can be the number of echo signals of a specified type obtained by each enclosed ultrasonic transceiver What is obtained after performing weighted superposition may also be obtained by using other algorithms, which is not specifically limited in this embodiment of the present application.
  • the specified type of echo signal may be an echo signal in a low level state.
  • the embodiment of the present application determines the number of echo signals in the low-level state and the number of low-level echo signals according to the preset frequency, and uses the echo signals in the low-level state as the specified type of echo signals.
  • the clothing quantity detection device when counting the low-level times of the echo signal, determines the closed ultrasonic signal transceiver that currently needs to detect the ultrasonic signal according to the set timing, and sends eight 40KHz pulses The signal is sent to the enclosed ultrasonic signal transceiver so that the ultrasonic signal transceiver sends a corresponding ultrasonic signal. Afterwards, the laundry quantity detection device starts to detect the number of low-level echo signals received by the receiving probe within the sampling period.
  • the clothing detection device performs fuzzy sampling on the receiving pin, the sampling time is set to 50ms (that is, the sampling duration), and the sampling frequency is 20us/time (that is, the preset frequency).
  • the signal starts counting the number of low levels of the echo signal. Based on the preset frequency, when the program polls the sampling action, if the level signal of the current receiving pin is sampled to be low level, the counter will add 1, indicating that the number of low levels is increased by 1.
  • the sampling duration reaches 50 ms, the sampling operation ends, and the number of low levels of the current echo signal is determined.
  • the set timing count the number of low-level echo signals received by each closed ultrasonic transceiver, and accumulate the number of low-level times to obtain the total number of low-levels, and use the total number of low-levels as the target value to use In the follow-up, the number of clothes is detected.
  • the clothes quantity detection device Based on the determined target value, the clothes quantity detection device compares the target value with corresponding threshold information, and then determines the quantity of clothes in the cabinet of the clothes care machine according to the comparison result.
  • the embodiments of the present application correspond to the number of clothes placed on the clothes care machine, and the corresponding threshold information is set for the quantity distribution range of the target value, so as to compare with the threshold and determine the number of clothes in the cabinet of the clothes care machine.
  • the total number of low levels (that is, the target value) is obtained by superimposing the number of echo signals in each low level state, so as to compare the total number of low levels
  • At least one preset low level threshold is used to determine the number of clothes in the cabinet of the clothes care machine based on the comparison result of the number of low levels.
  • the threshold information includes a first threshold, a second threshold and a third threshold.
  • the target value is greater than or equal to the first threshold, it is determined that the amount of laundry is zero. If the target value is greater than the second threshold and less than the first threshold, it is determined that the number of clothes is one; the second threshold is less than the first threshold. If the target value is less than or equal to the third threshold, it is determined that the number of clothes is N; the third threshold is less than the second threshold. If the target value is less than the second threshold and greater than the third threshold, it is determined that the number of clothes is greater than 1 and less than N.
  • three clothing detection areas are included in the cabinet of the clothing care machine. Taking the total number of low levels as an example, when the number of clothes is detected according to the total number of low levels, the total number of low levels is compared with the corresponding threshold to obtain Determines the number of laundry items currently in the laundry care cabinet.
  • the total number of low levels is greater than or equal to the first threshold, it is determined that there is no laundry in the cabinet of the laundry care machine. If the total number of low levels is less than or equal to the third threshold, it is determined that the current number of clothes in the cabinet of the clothes care machine is three. If the total number of low levels is greater than the second threshold and less than the first threshold, it is determined that the current number of clothes in the cabinet of the clothes care machine is 1. If the total number of low levels is greater than the third threshold and less than the second threshold, it is determined that the current number of clothes in the cabinet of the clothes care machine is 2.
  • the embodiment of the present application can also determine the clothing detection result of the corresponding clothing detection area by determining the clothing detection area corresponding to the echo signal with the least or most low-level times and combining the low-level frequency comparison result.
  • the clothes detection area corresponding to the echo signal with the least number of low-level clothes can be determined.
  • the first threshold Nmax, the second threshold Nmid and the third threshold Nmin are thresholds determined according to repeated verifications in actual tests.
  • the number distribution range of the total number of low levels when different numbers of clothes are placed in the cabinet of the clothing care machine can be determined based on actual tests, and then the above-mentioned first threshold Nmax, second threshold Nmid, and third threshold Nmin are set correspondingly, so that according to the above The threshold value precisely determines the amount of laundry in the laundry care cabinet.
  • the clothes quantity detection device determines that the clothes quantity is one, it also includes:
  • S1301. Determine a first closed ultrasonic transceiver, where the first closed ultrasonic transceiver is the closed ultrasonic transceiver that receives the smallest number of echo signals of a specified type among at least two closed ultrasonic transceivers.
  • three clothing detection areas are included in the cabinet of the clothing care machine. Taking the total number of low levels as an example, when detecting the number of clothes according to the total number of low levels, by comparing the low Level numbers S1, S2, and S3 are sorted to obtain Sn with the least number of low levels, then the current piece of clothing is located in the corresponding clothing detection area n with the least number of low levels. For example, if S1 has the least number of low levels, then the current piece of clothing is located in detection area 1.
  • the corresponding closed ultrasonic transceiver that receives the least number of echoes of the specified type, and then determine that there are clothes in the detection area corresponding to the closed ultrasonic transceiver. Based on the detection of the number of clothes, it can also be realized The detection of the location of the clothes is used to facilitate the clothes care machine to perform clothes care on the area where the clothes are placed, so as to achieve better clothes care effect.
  • N when N is equal to three, when the number of clothes is determined to be M, it also includes:
  • the second closed ultrasonic transceiver is the closed ultrasonic transceiver that receives the largest number of echo signals of the specified type among the three closed ultrasonic transceivers;
  • three clothing detection areas are included in the cabinet of the clothing care machine.
  • the total number of low levels as an example, when detecting the number of clothes according to the total number of low levels, by comparing the low Level numbers S1, S2, and S3 are sorted to obtain Sm with the most low-level times, and the current piece of clothing is located in the corresponding clothing detection area m with the most low-level times. For example, if the number of low levels of S2 is the most, then there is no clothing in the current detection area 2 .
  • the corresponding closed ultrasonic transceiver that receives the largest number of echoes of the specified type, and then determine the vacant clothes in the detection area corresponding to the closed ultrasonic transceiver. Based on the detection of the number of clothes, it can also be realized The detection of the location of the clothes is used to facilitate the clothes care machine to perform clothes care on the area where the clothes are placed, so as to achieve better clothes care effect.
  • the clothes quantity in the clothes care machine cabinet can be determined according to the low level times of the echo signal.
  • the corresponding clothes quantity detection process and the corresponding quantity threshold can be adaptively set.
  • the ultrasonic transceiver will also set the corresponding number, and the number of clothes N and M will also change adaptively during the process of detecting the number of clothes.
  • the clothes quantity detection device determines and obtains the clothes quantity obtained by each enclosed ultrasonic transceiver within the respective sampling time length after determining the acquisition module.
  • the number of echo signals of the specified type including:
  • S1103. Determine the number of echo signals of a specified type among the sampled echo signals.
  • the clothing quantity detection device When the clothing quantity detection device obtains the specified type of echo signal through each enclosed ultrasonic transceiver within the respective sampling duration, it determines the moment when the enclosed ultrasonic transceiver receives the first specified type of echo signal, and defines this moment as the first time. time. Trigger the sampling operation of the echo signal of the specified type at the first moment.
  • the specified echo signal is sampled according to a preset frequency.
  • the echo signal received at the current moment is sampled every 20 us, and it is judged whether the echo signal is an echo signal of a specified type. If yes, add 1 to the number of echo signals of the specified type, and so on, until the sampling operation reaches the sampling duration. Output the number of echo signals of the specified type collected according to the preset frequency during the sampling period.
  • the clothing amount detection device when the clothing amount detection device determines the number of echo signals of a specified type acquired by each enclosed ultrasonic transceiver within its respective sampling time length, it can also count the number of pulses of each echo signal as the specified type.
  • the echo signal; the total number of pulses is obtained by superimposing the number of pulses; the total number of pulses is compared with at least one preset pulse threshold, and the number of clothes in the cabinet of the laundry care machine is determined based on the pulse number comparison result.
  • the number of pulses can be obtained by counting the number of pulses in the echo signal. total. Further, the preset pulse threshold is extracted for comparison to determine the amount of laundry. The pulse threshold is determined by determining the number distribution range corresponding to the total number of pulses when different numbers of clothes are placed in the clothing care machine cabinet through actual tests.
  • a corresponding comparison process is set based on different pulse thresholds, so as to accurately determine the number of clothes in the cabinet of the clothes care machine based on the comparison of the total number of pulses and the pulse threshold.
  • the amount of laundry can also be detected according to echo signals of other specified types (such as high level or specified level times) of the echo signal.
  • the embodiment of the present application does not impose fixed restrictions on the echo signal of a specific specified type, so details are not repeated here.
  • the running time of the associated equipment in the current cabinet can be determined based on the number of clothes.
  • the clothing care machine is provided with three hangers, then the number of clothes on the three hangers is judged based on the above method for detecting the number of clothes, and then the number of clothes in the clothes care machine is determined. Adjust the total laundry care time and adjust the care program by varying the number of clothes. Take the quick care of clothes as an example, 20 minutes for one piece of clothing, 25 minutes for two pieces of clothing, and 30 minutes for three pieces of clothing. More clothes need more steam from the care machine, higher auxiliary heating power, etc. For example, one piece of clothes needs 2 minutes of steam, and each additional piece increases the steam for half a minute.
  • the running time of the clothing care machine can be adaptively adjusted to ensure that the clothing care machine can accurately adjust the running time, and avoid excessive energy consumption caused by the long running time of the clothing care machine. Optimizing The energy efficiency management effect of the clothing care machine optimizes the user experience.
  • the clothes quantity detection device (the clothes quantity detection device may be the above clothes care machine or the processor in the clothes care machine) may be divided into functional modules, for example, it may correspond to each
  • the functions are divided into various functional modules, and two or more functions can also be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 11 is a schematic structural diagram of an apparatus for detecting the number of clothes provided by an embodiment of the present application.
  • the clothing quantity detection device provided by this embodiment is applied to a clothing care machine including at least two enclosed ultrasonic transceivers, the enclosed ultrasonic transceivers are set correspondingly to the clothing detection area in the cabinet of the clothing care machine, and the number of clothes is
  • the detection device includes: an acquisition module 21 , a statistics module 22 and a determination module 23 .
  • the acquisition module 21 is used to determine the quantity of the specified type of echo signals that each closed ultrasonic transceiver acquires within the respective sampling duration; the echo signal is after the ultrasonic signal sent by the closed ultrasonic transceiver is reflected by an obstacle signal of.
  • the statistical module 22 is used to determine the target value according to the determined number of echo signals of a specified type, and the target value is used to represent the sum of the numbers of echo signals of a specified type acquired by each enclosed ultrasonic transceiver.
  • the determining module 23 is used for determining the quantity of clothes in the cabinet of the clothes care machine according to the target value.
  • the determining module 23 is specifically used for:
  • the target value is greater than the second threshold and less than the first threshold, determine that the number of clothes is one; the second threshold is less than the first threshold;
  • the third threshold is less than the second threshold
  • the target value is less than the second threshold and greater than the third threshold, it is determined that the number of clothes is greater than 1 and less than N.
  • the determination module 23 is also used to: determine the first closed ultrasonic transceiver when the number of clothes is determined to be one, and the first closed ultrasonic transceiver is the specified type of echo received by the N closed ultrasonic transceivers Enclosed ultrasonic transceiver with the smallest number of signals;
  • the determination module 23 is specifically configured to: determine that the number of clothes is two when N is equal to three and the target value is less than the second threshold and greater than the third threshold.
  • the determining module 23 is also used for: when determining that the number of clothes is two,
  • the second closed ultrasonic transceiver is the closed ultrasonic transceiver that receives the largest number of echo signals of the specified type among the three closed ultrasonic transceivers;
  • the acquisition module is specifically configured to: sequentially determine the number of echo signals of a specified type acquired by each enclosed ultrasonic transceiver based on the ultrasonic signal transmission timing, and the ultrasonic signal transmission timing is used to control each enclosed ultrasonic transceiver.
  • the corresponding ultrasonic signal sending sequence sends the ultrasonic signal.
  • the first moment is the moment when the closed ultrasonic transceiver receives the first echo signal of the specified type
  • the received echo signal is sampled according to the preset frequency within the sampling period
  • the echo signals of the above specified type include echo signals in a low level state.
  • the echo signal is the signal after the ultrasonic signal sent by the closed ultrasonic transceiver is reflected by the obstacle; according to Determine the number of echo signals of the specified type and determine the target value, which is used to represent the sum of the number of echo signals of the specified type obtained by each closed ultrasonic transceiver; according to the target value, determine the value of the clothing care machine The number of laundry items in the bin.
  • the running time of the clothing care machine can be adaptively adjusted to ensure that the clothing care machine can accurately adjust the running time, and avoid excessive energy consumption caused by the long running time of the clothing care machine. Optimizing The energy efficiency management effect of the clothing care machine optimizes the user experience.
  • the laundry quantity detection device provided in the embodiment of the present application can be used to implement the laundry quantity detection method provided in the first embodiment above, and has corresponding functions and beneficial effects.
  • the embodiment of the present application provides a clothes care machine. Referring to FIG. Type ultrasonic transceiver 36.
  • the number of processors in the clothes care machine may be one or more, and the number of memories in the clothes care machine may be one or more.
  • the processor, memory, communication module, input device, output device and enclosed ultrasonic transceiver of the clothing care machine can be connected through a bus or in other ways.
  • the memory 32 can be used to store software programs, computer-executable programs and modules, such as program instructions/modules corresponding to the clothes quantity detection method in any embodiment of the present application (for example, in the clothes quantity detection device acquisition module, statistics module and determination module).
  • the memory 32 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system and at least one application required for a function.
  • the data storage area may store data created according to the use of the device, and the like.
  • the memory 32 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices.
  • memory 32 may further include memory located remotely from the processor, which remote memory may be connected to the device via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the communication module 33 is used for data transmission, and the enclosed ultrasonic transceiver 36 is used for sending ultrasonic signals and receiving echo signals of the ultrasonic signals.
  • the processor 31 executes various functional applications and data processing of the device by running the software programs, instructions and modules stored in the memory, that is, realizes the above-mentioned laundry quantity detection method.
  • the input device 34 can be used for receiving inputted numerical or character information, and generating key signal input related to user setting and function control of the device.
  • the output device 35 may include a display device such as a display screen.
  • the clothes care machine provided above can be used to implement the method for detecting the number of clothes provided in the above embodiments, and has corresponding functions and beneficial effects.
  • the embodiments of the present application also provide a computer-readable storage medium, the computer-readable storage medium includes computer instructions, and when the computer instructions are run on the clothes care machine, the clothes care machine is executed as described above.
  • the laundry quantity detection method described in the example is described in the example.
  • storage medium any of various types of memory devices or storage devices.
  • storage medium is intended to include: installation media such as CD-ROMs, floppy disks, or tape drives; computer system memory or random access memory such as DRAM, DDR RAM, SRAM, EDO RAM, Rambus RAM, etc. ; non-volatile memory, such as flash memory, magnetic media (eg hard disk or optical storage); registers or other similar types of memory elements, etc.
  • the storage medium may also include other types of memory or combinations thereof.
  • the storage medium may be located in a first computer system in which the program is executed, or may be located in a different second computer system connected to the first computer system through a network such as the Internet.
  • the second computer system may provide program instructions to the first computer for execution.
  • storage medium may include two or more storage media that reside in different locations, for example in different computer systems connected by a network.
  • the storage medium may store program instructions (eg embodied as computer programs) executable by one or more processors.
  • the embodiment of the present application further provides a computer program product, the computer program product includes computer instructions, and when the computer instructions are run on the clothes care machine, the clothes care machine is made to execute the method for detecting the number of clothes in the above embodiments.
  • the clothes quantity detection device, storage medium and clothes care machine provided in the above embodiments can implement the clothes quantity detection method provided in any embodiment of the present application.

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Abstract

一种衣物数量检测方法、装置、衣物护理机及存储介质，涉及超声波检测技术领域。通过确定衣物护理机内每个封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量；根据确定出的指定类型的回波信号的数量，确定目标数值，该目标数值用于表征各个封闭式超声波收发器获取到的指定类型的回波信号的数量之和；根据目标数值，确定衣物护理机的箱体内的衣物数量。该衣物数量检测方法、装置、衣物护理机及存储介质，利用衣物护理机箱体内放置衣物的数量与指定类型的回波信号数量存在对应关系的特点，进行衣物数量检测，规避了信号干扰问题，提升了衣物数量检测精度。

Description

一种衣物数量检测方法、装置、衣物护理机及存储介质
本申请要求在2021年11月16日提交国家知识产权局、申请号为202111355491.8的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及超声波检测技术领域，尤其涉及一种衣物数量检测方法、装置、衣物护理机及存储介质。
背景技术
现有的衣物护理机可以确定出护理机箱体内部的衣物数量，并根据确定出的衣物数量，适应调整运行时长，以有效控制功耗，提升用户体验。
目前，衣物护理机检测衣物数量的方式为：控制封闭式超声波检测装置的发送端发送超声波信号，相应地，确定封闭式超声波检测装置的接收端接收到的回波信号的回波时间，并根据回波时间确定各个衣架是否挂有衣物，以此统计出箱体内部的衣物数量。
但是，封闭式超声波检测装置的发送端发出的超声波信号容易通过探头外壳结构、电路等途径传输到接收端，并且超声波信号在传播过程中也可能被其余衣物检测区域的障碍物吸收，对回波信号的接收造成干扰，进而影响衣物数量检测的准确度，导致误判的情况。因此，上述方法确定衣物数量的准确度较低。
发明内容
本申请实施例提供一种衣物数量检测方法、装置、衣物护理机及存储介质，解决了现有衣物护理机的衣物数量的准确度较低的问题。
在第一方面，本申请实施例提供了一种衣物数量检测方法，应用于包括N(N为大于或等于2的正整数)个封闭式超声波收发器的衣物护理机，封闭式超声波收发器与衣物护理机的箱体内的衣物检测区域对应设置。具体的，该衣物数量检测方法包括：确定每个封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量，并根据确定出的指定类型的回波信号的数量，确定目标数值，该目标数值用于表征各个封闭式超声波收发器获取到的指定类型的回波信号的数量之和；之后，根据目标数值，确定衣物护理机的箱体内的衣物数量。这里，回波信号为封闭式超声波收发器发送的超声波信号被障碍物 反射后的信号。
在实际应用中，指定类型的回波信号数量与衣物数量是对应的。基于此，本申请实施例提供的衣物数量检测方法通过统计整个衣物护理机箱体内指定类型的回波信号的数量，以进行衣物数量检测，有效地避免了衣物护理机箱体内各个区域对回波信号的影响，规避通过回波时间检测衣物时导致的信号干扰问题，进而提升衣物数量检测精度。
进一步地，由于衣物数量的检测精度有效提升，因此，后续在进行衣物护理时，可以根据精准检测的衣物数量，适应性调整衣物护理机的运行时长，确保衣物护理机准确调整运行时长，避免衣物护理机运行时间过长导致能耗浪费，优化衣物护理机的能效管理效果，优化用户使用体验。
在一种可能的设计方式中，上述“根据目标数值，确定衣物护理机的箱体内的衣物数量”包括：
若目标数值大于或等于第一阈值，确定衣物数量为零；若目标数值大于第二阈值，且小于第一阈值(第二阈值小于第一阈值)，确定衣物数量为一；若目标数值小于或等于第三阈值(第三阈值小于第二阈值)，确定衣物数量为N；若目标数值小于第二阈值，且大于第三阈值，确定衣物数量大于1且小于N。
在另一种可能的设计方式中，在确定衣物数量为一后，该衣物数量检测方法还包括：确定第一封闭式超声波收发器，该第一封闭式超声波收发器是至少两个封闭式超声波收发器中接收到指定类型的回波信号的数量最小的封闭式超声波收发器；之后，确定衣物护理机的箱体内的衣物位于第一封闭式超声波收发器对应的衣物检测区域，即确定第一封闭式超声波收发器对应的衣架上面挂有衣物。
在另一种可能的设计方式中，若N等于三，上述“确定衣物数量大于1且小于N”包括：确定衣物数量为二。
在另一种可能的设计方式中，若确定衣物数量为二,则该衣物数量检测方法还包括：确定第二封闭式超声波收发器，该第二封闭式超声波收发器是三个封闭式超声波收发器中接收到指定类型的回波信号的数量最多的封闭式超声波收发器；后续，确定衣物护理机的箱体内，位于第二封闭式超声波收发器对应的衣物检测区域无衣物，即确定第二封闭式超声波收发器对应的衣架上面无衣物。
在另一种可能的设计方式中，上述“确定每个封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量”，包括：基于超声波信号发 送时序依次确定每个封闭式超声波收发器获取到的指定类型的回波信号的数量，超声波信号发送时序用于控制各个封闭式超声波收发器在对应的超声波信号发送时序发送超声波信号。
在另一种可能的设计方式中，上述“确定每个封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量”，包括：确定第一时刻，并从第一时刻起，在采样时长内按照预设频率对接收到的回波信号进行采样；之后，确定采样到的回波信号中，指定类型的回波信号的数量。这里的第一时刻为封闭式超声波收发器接收到首个指定类型的回波信号的时刻。
在另一种可能的设计方式中，上述指定类型的回波信号为处于低电平状态的回波信号。
当然，在实际应用中，上述指定类型的回波信号还可以是其他类型的信号，本申请实施例对此不作具体限定。
在第二方面，本申请实施例提供了一种衣物数量检测装置，应用于包括N(N为大于或等于2的正整数)个封闭式超声波收发器的衣物护理机，封闭式超声波收发器与衣物护理机的箱体内的衣物检测区域对应设置。具体的，衣物数量检测装置包括获取模块、统计模块以及确定模块。获取模块，用于确定每个封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量。统计模块，用于根据确定出的指定类型的回波信号的数量，确定目标数值，目标数值用于表征各个封闭式超声波收发器获取到的指定类型的回波信号的数量之和。确定模块，用于根据目标数值，确定衣物护理机的箱体内的衣物数量。此处，回波信号为封闭式超声波收发器发送的超声波信号被障碍物反射后的信号。
在一种可能的设计方式中，上述确定模块具体用于：
若目标数值大于或等于第一阈值，确定衣物数量为零；
若目标数值大于第二阈值，且小于第一阈值(第二阈值小于第一阈值)，确定衣物数量为一；并在确定衣物数量为1后，确定第一封闭式超声波收发器，该第一封闭式超声波收发器是至少两个封闭式超声波收发器中接收到指定类型的回波信号的数量最小的封闭式超声波收发器；之后，确定衣物护理机的箱体内的衣物位于第一封闭式超声波收发器对应的衣物检测区域，即确定第一封闭式超声波收发器对应的衣架上面挂有衣物。若目标数值小于或等于第三阈值，(第三阈值小于第二阈值)确定衣物数量为N；若目标数值小于第二阈值，且 大于第三阈值，确定衣物数量为大于1且小于N。
在另一种可能的设计方式中，在N等于三时，目标数值小于第二阈值，且大于第三阈值，上述确定模块具体用于：在确定衣物数量为二后，确定第二封闭式超声波收发器，第二封闭式超声波收发器是三个封闭式超声波收发器中接收到指定类型的回波信号的数量最多的封闭式超声波收发器；确定衣物护理机的箱体内，位于第二封闭式超声波收发器对应的衣物检测区域空缺衣物。
在另一种可能的设计方式中，上述获取模块具体用于：基于超声波信号发送时序依次确定每个封闭式超声波收发器获取到的指定类型的回波信号的数量，超声波信号发送时序用于控制各个封闭式超声波收发器在对应的超声波信号发送时序发送超声波信号。
在另一种可能的设计方式中，上述获取模块具体用于：确定第一时刻，第一时刻为封闭式超声波收发器接收到首个指定类型的回波信号的时刻；并从第一时刻起，在采样时长内按照预设频率对接收到的回波信号进行采样；之后确定采样到的回波信号中，指定类型的回波信号的数量。这里的第一时刻为封闭式超声波收发器接收到首个指定类型的回波信号的时刻。
在另一种可能的设计方式中，上述指定类型的回波信号为处于低电平状态的回波信号。
在第三方面，本申请实施例提供了一种衣物护理机，该衣物护理机包括：N个封闭式超声波收发器，存储器以及处理器，N为大于或等于2的正整数，所述封闭式超声波收发器连接所述处理器。所述存储器，用于存储计算机执行指令。所述处理器用于调用所述计算机执行指令以及控制所述封闭式超声波收发器的运行，使得所述所述衣物护理机运行时，执行所述计算机执行指令以实现如第一方面的衣物数量检测方法。
在第四方面，本申请实施例提供了一种计算机可读存储介质，包括计算机指令，当所述计算机指令在衣物护理机上运行时，使得所述衣物护理机执行如第一方面的衣物数量检测方法。
第五方面，本申请实施例提供一种计算机程序产品，该计算机程序产品包括计算机指令，当所述计算机指令在衣物护理机上运行时，使得所述衣物护理机执行如第一方面及其任一种可能的设计方式所述的衣物数量检测方法。
本申请实施例中第二方面到第五方面及其各种实现方式的具体描述，可以参考第一方面及其各种实现方式中的详细描述；并且，第二方面到第五方面及 其各种实现方式的有益效果，可以参考第一方面及其各种实现方式中的有益效果分析，此处不再赘述。
本申请实施例的这些方面或其他方面在以下的描述中会更加简明易懂。
附图说明
图1是本申请实施例提供的一种衣物数量检测方法的流程图；
图2是本申请实施例中的衣物数量检测装置与超声波板的连接示意图；
图3是本申请实施例提供的一种衣物数量检测方法的流程图；
图4是本申请实施例中的一种回波信号示意图；
图5是本申请实施例中的一种回波信号示意图；
图6是本申请实施例中的低电平次数统计流程图；
图7是本申请实施例中衣物护理机的衣物数量检测流程图；
图8是本申请实施例中的一种衣物位置检测流程图；
图9是本申请实施例中的另一种衣物位置检测流程图。
图10是本申请实施例中指定类型回波信号的数量采样流程图；
图11是本申请实施例提供的一种衣物数量检测装置的结构示意图；
图12是本申请实施例提供的一种衣物护理机的结构连接示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面结合附图对本申请具体实施例作进一步的详细描述。可以理解的是，此处所描述的具体实施例仅仅用于解释本申请，而非对本申请的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本申请相关的部分而非全部内容。在更加详细地讨论示例性实施例之前应当提到的是，一些示例性实施例被描述成作为流程图描绘的处理或方法。虽然流程图将各项操作(或步骤)描述成顺序的处理，但是其中的许多操作可以被并行地、并发地或者同时实施。此外，各项操作的顺序可以被重新安排。当其操作完成时所述处理可以被终止，但是还可以具有未包括在附图中的附加步骤。所述处理可以对应于方法、函数、规程、子例程、子程序等等。
需要说明的是，在本申请中，诸如第一和第二之类的关系术语仅仅用来将一个实体或操作或对象与另一个实体或操作或对象区分开来，而不一定要求或者暗示这些实体或操作或对象之前存在任何这种实际的关系或顺序。例如，第一触控操作和第二触控操作的“第一”和“第二”用来区分两个不同时间触摸 屏幕盖板的交互操作。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。此外，在本申请的描述中，除非另有说明，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
相对于传统的衣物护理机，其在进行衣物数量检测时，一般是通过封闭式超声波检测装置发送超声波信号，并通过确定接收到的回波信号的回波时长，基于回波时长确定与封闭式超声波检测装置对应的区域是否存在衣物，根据各个区域的衣物检测结果确定衣物数量。由于封闭式超声波检测装置在发送超声波信号时，其超声波信号容易通过探头外壳结构、电路等途径传输到接收端，且超声波信号在传播过程中也可能被其余衣物检测区域的障碍物吸收，进而对回波信号的接收造成干扰，影响衣物检测结果的精准度，进而导致误判衣物数量的情况。
基于此，提供本申请实施例的一种衣物数量检测方法，以解决现有衣物护理机的衣物数量检测误判问题。本申请提供的一种衣物数量检测方法，旨在通过统计各个封闭式超声波收发器接收的指定类型的回波信号的数量，利用衣物护理机箱体内放置衣物的数量与指定类型的回波信号数量对应的特点，进而通过指定类型回波信号总量分析衣物护理机的箱体内的衣物数量，实现衣物数量的精准检测。
其中，超声波信号是声波的一部分，是人耳听不见、频率高于20KHZ的声波，它是由物质振动而产生的，并且只能在介质中传播。超声波信号在传播过程中遇到障碍物时，会反射回封闭式超声波收发器，这一信号即为回波信号。本申请实施例通过接收这一回波信号，利用衣物护理机箱体内放置衣物的数量与指定类型的回波信号数量对应的特点，通过统计各个回波信号中指定类型的回波信号的数量以精准进行衣物护理机箱体内的衣物数量检测。
本申请实施例提供的衣物数量检测方法主要应用于衣物护理机。图1示出了衣物护理机的结构示意图。如图1所示，衣物护理机的箱体内胆中设置有超声波板11和衣架12。衣架12用于悬挂衣物。在衣物护理机运行时，利用箱体内胆设置的喷淋、烘干等设备执行衣物护理作业，以实现衣物护理机的衣物护理功能。
超声波板11上设置有至少两个封闭式超声波收发器。在实际应用中，超声 波板11可以安装在密闭箱体内部的背板处(即在门板的对面背板安装)；也可以设置在密闭箱体内的顶部，还可以设置在密闭箱体内的底部，还可以设置在门板上，本申请实施例对其具体设置位置不做固定限制。图1中示出的超声波板11的位置是以在密闭箱体内部的背板处为例。
每一个封闭式超声波收发器可以包括发送探头111和接收探头112，其设置位置与衣架12的设置位置对应，以通过封闭式超声波收发器对应衣架12的区域发送超声波信号，进而通过回波信号进行衣物数量检测。
示例性的，封闭式超声波收发器安装在密闭箱体内部的背板处，且高度在衣架下方两厘米处。这样，可以对应不同长度的衣物进行回波信号检测，优化衣物数量检测效果。
在实际应用中，可以根据衣物护理机的实际硬件配置，每设置一个衣架12，就对应设置一组封闭式超声波收发器，以实现封闭式超声波收发器对应衣物检测区域的超声波信号发送和回波信号接收，提高确定衣物数量的准确度。
当然，也可以根据衣物数量检测场景的不同，可以适应性调整封闭式超声波收发器的设置位置，以精准进行对应衣物检测区域的信号发送与接收。
本申请实施例中的每个封闭式超声波收发器均与衣物护理机中的处理器连接。图2示出了每个封闭式超声波收发器与衣物护理机中处理器的连接方式。
参照图2，以衣物护理机包括三个封闭式超声波收发器(如封闭式超声波收发器1、封闭式超声波收发器2、封闭式超声波收发器3)为例。处理器通过端口Tx1-io连接封闭式超声波收发器1的发送探头Tx1，处理器通过端口Rx1-io连接封闭式超声波收发器1的接收探头Rx1。处理器通过端口Tx2-io连接封闭式超声波收发器2的发送探头Tx2，处理器通过端口Rx2-io连接封闭式超声波收发器2的接收探头Rx2。处理器通过端口Tx3-io连接封闭式超声波收发器3的发送探头Tx3，处理器通过端口Rx1-io连接封闭式超声波收发器3的接收探头Rx3。
在进行衣物数量检测时，衣物数量检测装置向对应封闭式超声波收发器的发送探头发送脉冲信号，以使该超声波发送探头向其对应的衣物检测区域发送超声波信号，进而通过超声波收发器的接收探头接收超声波信号的回波信号，基于该回波信号即可分析确定当前衣物护理机箱体内的衣物数量。
下面结合附图1和图2对本申请实施例提供的衣物数量检测方法进行描述。
图3给出了本申请实施例一提供的一种衣物数量检测方法的流程图。本实 施例中提供的衣物数量检测方法可以由衣物数量检测装置执行。该衣物数量检测装置可以通过软件和/或硬件的方式实现。该衣物数量检测装置可以是上述衣物护理机，也可以是上述衣物护理机中的处理器，还可以是上述衣物护理机中用于检测衣物数量的控制模块。
下述以衣物数量检测装置为执行衣物数量检测方法的主体为例，进行描述。参照图1，如图3所示，该衣物数量检测方法具体包括：
S110、确定每个封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量。
回波信号为封闭式超声波收发器发送的超声波信号被障碍物反射后的信号。
可选地，在进行衣物数量检测时，基于超声波信号发送时序依次确定每个封闭式超声波收发器获取到的指定类型的回波信号的数量。超声波信号发送时序用于控制各个封闭式超声波收发器在对应的超声波信号发送时序发送超声波信号。
衣物数量检测装置根据衣物护理机箱体内设置的封闭式超声波收发器的数量，基于设定时序逐一控制封闭式超声波信号收发器进行超声波信号的发送和接收。
由于封闭式超声波信号收发器的信号发送角度较大，信号指向性较弱。在衣物护理机设置多个封闭式超声波收发器进行多个衣物检测区域的衣物数量检测时，为了避免封闭式超声波收发器并行进行超声波信号检测的情况下，各个衣物检测区域出现信号的相互干扰，进而导致接收到的回波信号存在大量的干扰信号，干扰当前衣物护理机的衣物数量检测。基于此，在进行衣物数量检测时，通过预先设置各个封闭式超声波收发器的超声波信号发送时序，使得各个封闭式超声波收发器按顺序在不同的时间点发送超声波信号。
对应的，各个封闭式超声波收发器也会按顺序在不同的时间点接收超声波信号。
为了进一步减少信号干扰，可以控制一个超声波收发器接收完超声波信号后，下一个超声波收发器才开始发送超声波信号。以此可以避免信号干扰，进一步提升衣物数量检测精度，优化衣物数量检测效果。
可选地，在获取封闭式超声波收发器在预设时长内接收的回波信号之前，衣物数量检测装置需要通过发送设定数量、设定频率和设定占空比的脉冲信号 至封闭式超声波收发器，以使封闭式超声波收发器发送对应超声波信号。
在实际应用中，根据实际的衣物数量检测需求，可以预先适应性设置脉冲信号发送的设定数量、设定频率和占空比。
示例性的，本申请在进行衣物数量检测时，通过衣物数量检测装置往发送探头发送8个40KHz，占空比50％的脉冲信号，进而使之产生超声波信号。
在封闭式超声波收发器对应衣物检测区域发送超声波信号时，通过选定当前需要进行超声波信号检测的对应衣物检测区域，发送脉冲信号至该衣物检测区域对应设置的封闭式超声波收发器的发送探头，以使发送探头发射超声波信号。超声波信号在衣物护理机箱体内传播时，遇到障碍物会反射回波信号至该封闭式超声波收发器，进而通过封闭式超声波收发器的接收探头接收该回波信号。衣物数量检测装置通过获取这一超声波信号的回波信号，根据各个封闭式超声波收发器接收到的回波信号即可进一步进行分析处理确定当前衣物护理机箱体内的衣物数量。
具体地，如图4所示，在封闭式超声波收发器对应衣物检测区域的衣架12挂有衣物13的场景中，封闭式超声波收发器的发送探头111发射出的超声波信号，在传播途中遇到衣物13时，会被反射回波信号至封闭式超声波收发器处，即接收探头112可以接收到该回波信号。同样的，超声波信号到达衣物护理机内胆的壁面时，也会被反射回波信号。
如图5所示，在封闭式超声波收发器对应衣物检测区域的衣架12没有悬挂衣物的场景中，封闭式超声波收发器的发送探头111发射出的超声波信号，会在到达衣物护理机内胆的壁面后被反射回波信号至封闭式超声波收发器处，接收探头112可以接收该回波信号。
可以理解的是，超声波信号在衣物护理机内胆的对应区域传播过程中，对于不同障碍物(如衣物或者内胆壁面)，其反射回波信号后，封闭式超声波收发器会在不同时间段接收到不同信号特征的回波信号。并且，根据对应区域有无衣物两种情况，箱体内胆壁面返回的回波信号由于存在不同障碍物的干扰，其信号特征也不相同。
由于封闭式超声波收发器存在信号发送角度较大，信号指向性较弱的特点。在当前封闭式超声波收发器对应衣物检测区域发送超声波信号时，超声波信号会被反射到其他衣物检测区域，被吸收或者反射相应的回波信号至当前封闭式超声波收发器。显然，由于其他衣物检测区域对回波信号的干扰，单独基于一 个封闭式收发器接收到的回波信号的信号特征，难以准确地确定对应衣物检测区域是否存在衣物。而根据实际测验结果，根据衣物护理机放置不同数量衣物的不同情况，衣物数量检测装置接收到的各个回波信号中，指定类型回波信号的数量会跟随着衣物数量的变化处于相应固定的数量范围，即指定类型的回波信号数量与衣物数量对应。基于此原理，本申请实施例通过获取各个封闭式超声波收发器接收到的采样时长的回波信号以进行分析处理，进而即可根据指定类型回波信号的数量，对应确定当前衣物护理机箱体内的衣物数量。
为了完整获取需要进行衣物数量检测的回波信号，本申请实施例提供的衣物数量检测方法还可以根据回波信号跟随衣物护理机箱体内放置的衣物数量而变化的时间段，设置一个采样时长，以使各个封闭式超声波收发器各自基于采样时长获取超声波信号收发器接收到的回波信号。以此可以保障各个回波信号准确反映当前衣物护理机箱体内存在对应数量衣物情况下，回波信号波形变化的相关规律性。
进一步地，基于获取到的采样时长的回波信号，本申请实施例通过从回波信号中统计指定类型回波信号，进而根据衣物护理机内所有封闭式超声波收发器接收到的回波信号确定指定类型回波信号的数量，对各个指定类型回波信号的数量进行叠加，确定指定类型回波信号的数量和。之后，根据确定出的指定类型回波信号的数量和，结合实际测验得到的衣物护理机箱体内放置衣物的数量与指定类型的回波信号数量的对应关系，即可对比确定出衣物护理机的箱体内的衣物数量。
S120、根据确定出的指定类型的回波信号的数量，确定目标数值，该目标数值用于表征各个封闭式超声波收发器获取到的指定类型的回波信号的数量之和。
在确定出各个超声波收发器获取到的指定类型回波信号的数量后，衣物数量检测装置统计各个指定类型回波信号的数量和(即目标数值)，以用于后续进行衣物数量检测。
目标数值可以是对各个封闭式超声波收发器获取到的指定类型的回波信号的数量直接相加得到的，也可以是对各个各个封闭式超声波收发器获取到的指定类型的回波信号的数量进行加权叠加后得到的，还可以是采用其他算法得到的，本申请实施例对此不做具体限定。
可选地，指定类型的回波信号可以为处于低电平状态的回波信号。这样的 话，本申请实施例根据预设频率确定处于低电平状态的回波信号数量、及回波信号的低电平次数，以处于低电平状态的回波信号作为指定类型回波信号。
示例性的，如图6所示，在统计回波信号的低电平次数时，衣物数量检测装置根据设定时序确定当前需要进行超声波信号检测的封闭式超声波信号收发器，发送8个40KHz脉冲信号至该封闭式超声波信号收发器以使超声波信号收发器发送对应的超声波信号。之后，衣物数量检测装置开始检测采样时长内接收探头接收到的回波信号的低电平次数。
可选地，衣物检测设备对接收引脚进行模糊采样，采样时间设定为50ms(即采样时长)，采样频率为20us/次(即预设频率)接收探头从检测到第一个低电平信号开始统计回波信号的低电平次数。基于预设频率，当程序轮询到采样动作时，若采样到当前接收引脚的电平信号为低电平时，计数器加1，表示低电平次数加1。直到采样时长达到采样时长50ms时，结束采样动作，确定当前回波信号的低电平数量。根据设定时序，对各个封闭式超声波收发器接收到的回波信号进行低电平次数统计，将各个低电平次数累加得到低电平总数，以低电平总数作为该目标数值，以用于后续进行衣物数量检测。
S130、根据目标数值，确定衣物护理机的箱体内的衣物数量。
基于已确定的目标数值，衣物数量检测装置通过将目标数值比对相应的阈值信息，进而根据比对结果确定衣物护理机的箱体内的衣物数量。
根据实际测验结果，发现衣物护理机箱体内放置不同数量的衣物时，其回波信号中指定类型回波信号的数量对应处于相对固定的数量范围。基于此规律，本申请实施例对应衣物护理机放置不同数量衣物，该目标数值的数量分布范围，设置相应的阈值信息，以便于同于阈值比对，确定衣物护理机的箱体内的衣物数量。
以低电平状态的回波信号作为指定类型回波信号为例，通过将各个低电平状态的回波信号数量叠加得到低电平总数(即目标数值)，以将低电平总数比对预设定的至少一个低电平阈值，基于低电平次数比对结果确定衣物护理机的箱体内的衣物数量。
可选地，阈值信息包括第一阈值、第二阈值和第三阈值。其中，若目标数值大于或等于第一阈值，确定衣物数量为零。若目标数值大于第二阈值，且小于第一阈值，确定衣物数量为一；第二阈值小于第一阈值。若目标数值小于或等于第三阈值，确定衣物数量为N；第三阈值小于第二阈值。若目标数值小于 第二阈值，且大于第三阈值，确定衣物数量大于1、且小于N。
示例性地，在衣物护理机的箱体内包括三个衣物检测区域，以低电平总数为例，在根据低电平总数进行衣物数量检测时，将低电平总数比对相应的阈值，以确定当前衣物护理机箱体内的衣物数量。
具体地，若低电平总数大于或等于第一阈值，确定当前衣物护理机的箱体内没有衣物。若低电平总数小于或等于第三阈值，确定当前衣物护理机的箱体内的衣物数量为3。若低电平总数大于第二阈值，且小于第一阈值，确定当前衣物护理机的箱体内的衣物数量为1。若低电平总数大于第三阈值，且小于第二阈值，确定当前衣物护理机的箱体内的衣物数量为2。
此外，本申请实施例还可以通过确定低电平次数最少或者最多的回波信号所对应的衣物检测区域，结合低电平次数比对结果，确定对应的衣物检测区域的衣物检测结果。
如：在确定当前衣物护理机的箱体内的衣物数量为1的场景中，可以确定衣物在低电平次数最少的回波信号所对应的衣物检测区域。在确定当前衣物护理机的箱体内的衣物数量为2的场景中，可以确定低电平次数最多的回波信号所对应的衣物检测区域无衣物。
参照图7，对应三个衣物检测区域的封闭式超声波收发器接收的回波信号，确定三个回波信号的低电平次数，分别记为S1、S2和S3，低电平次数S1、S2和S3分别对应衣物检测区域编号1、2和3。将S1、S2和S3累加得出低电平总数Sum，进一步基于设定的第一阈值Nmax、第二阈值Nmid和第三阈值Nmin，判断Sum属于阈值的那个区间。其中，在Sum值大于或等于Nmax时，确定箱体不存在衣服，处于空箱状态。在Sum值小于或等于Nmin时，确定箱体挂满三件衣服。在Sum值介于Nmid到Nmax区间时，确定箱体内有一件衣服。在Sum值介于Nmin到Nmid区间时，确定箱体内有两件衣服。
第一阈值Nmax、第二阈值Nmid和第三阈值Nmin是根据实际测试中反复验证确定的阈值。可选地，设置Nmax＝8000，Nmid＝3500，Nmin＝1000。实际应用中，可基于实际测试确定衣物护理机箱体内放置不同数量衣物时低电平总数的数量分布范围，进而对应设置上述第一阈值Nmax、第二阈值Nmid和第三阈值Nmin，以便于根据上述阈值精准确定衣物护理机箱体内的衣物数量。
进一步地，在如图3所示的衣物数量检测方法的基础上，如图8所示，衣物数量检测装置在确定衣物数量为一时，还包括：
S1301、确定第一封闭式超声波收发器，第一封闭式超声波收发器是至少两个封闭式超声波收发器中接收到指定类型的回波信号的数量最小的封闭式超声波收发器。
S1302、确定衣物护理机的箱体内的衣物位于第一封闭式超声波收发器对应的衣物检测区域。
示例性地，在衣物护理机的箱体内包括三个衣物检测区域，以低电平总数为例，在根据低电平总数进行衣物数量检测时，通过比对三个封闭式超声波收发器的低电平个数S1、S2和S3，排序得出低电平次数最少的Sn，则当前一件衣服位于低电平次数最少的对应衣物检测区域n。例如，若S1的低电平次数最少，则当前一件衣服位于检测区域1处。
通过在检测衣物数量时，确定接收指定类型回波数量最少的对应封闭式超声波收发器，进而确定该封闭式超声波收发器对应检测区域存在衣物，以此在衣物数量检测的基础上，还可以实现衣物放置位置的检测，以便于衣物护理机针对放置衣物的区域进行衣物护理，实现更优的衣物护理效果。
可选地，在如图3所示的的衣物数量检测方法的基础上，如图9所示，在N等于三时，确定衣物数量为M时，还包括：
S1303、确定第二封闭式超声波收发器，第二封闭式超声波收发器是三个封闭式超声波收发器中接收到指定类型的回波信号的数量最多的封闭式超声波收发器；
S1304、确定衣物护理机的箱体内，位于第二封闭式超声波收发器对应的衣物检测区域空缺衣物。
示例性地，在衣物护理机的箱体内包括三个衣物检测区域，以低电平总数为例，在根据低电平总数进行衣物数量检测时，通过比对三个封闭式超声波收发器的低电平个数S1、S2和S3，排序得出低电平次数最多的Sm，则当前一件衣服位于低电平次数最多的对应衣物检测区域m。例如，若S2的低电平次数最多，则当前检测区域2处空缺衣物。
通过在检测衣物数量时，确定接收指定类型回波数量最多的对应封闭式超声波收发器，进而确定该封闭式超声波收发器对应检测区域空缺衣物，以此在衣物数量检测的基础上，还可以实现衣物放置位置的检测，以便于衣物护理机针对放置衣物的区域进行衣物护理，实现更优的衣物护理效果。
基于上述衣物数量检测流程，即可根据回波信号的低电平次数确定衣物护 理机箱体内的衣物数量。需要说明的是，在实际衣物数量检测场景中，根据箱体内设置的衣架数量(即可放置的衣物数量)，可以适应性设置相应的衣物数量检测流程及相应数量的阈值。此外，根据不同数量的衣架数量，则超声波收发器也会设置相应的数量，在进行衣物数量检测流程时，衣物数量N和M也会适应性变化。本申请实施例对具体数量的衣物检测区域、封闭式超声波收发器及阈值的设定不做固定限制，在此不多赘述。
可选地，在如图3所示的衣物数量检测方法的基础上，如图10所示，衣物数量检测装置在确定获取模块在确定每个封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量，包括：
S1101、确定第一时刻，第一时刻为封闭式超声波收发器接收到首个指定类型的回波信号的时刻；
S1102、从第一时刻起，在采样时长内按照预设频率对接收到的回波信号进行采样；
S1103、确定采样到的回波信号中，指定类型的回波信号的数量。
衣物数量检测装置通过各个封闭式超声波收发器在各自采样时长内获取指定类型的回波信号时，确定封闭式超声波收发器接收到首个指定类型的回波信号的时刻，定义该时刻作为第一时刻。在第一时刻触发指定类型回波信号的采样操作。按照一个预设频率进行指定回波信号的采样。
例如，每隔20us进行采样当前时刻接收到的回波信号，判断该回波信号是否为指定类型的回波信号。若是，则指定类型回波信号的数量加1，以此类推，直至采样操作达到采样时长。输出在该采样时长中，按照预设频率采集到的指定类型的回波信号的数量。通过设定相应的采样操作触发时刻及采样操作的预设频率，可以确保指定类型回波信号的准确检测，依此进行衣物数量的检测，可以提升衣物数量的检测精度，优化检测效果。
在一个实施例中，衣物数量检测装置在确定每个封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量时，还可以统计各个回波信号的脉冲数量作为指定类型回波信号；通过将各个脉冲数量叠加得到脉冲总数；将脉冲总数比对预设定的至少一个脉冲阈值，基于脉冲数量比对结果确定衣物护理机的箱体内的衣物数量。
可以理解的是，由于脉冲数量的不同分布情况同样可以反映衣物护理机箱体内放置的不同数量衣物，因此，根据实际回波信号检测需求，通过统计回波 信号中的脉冲数量，将脉冲数量得到脉冲总数。进而提取预设定的脉冲阈值进行比对确定衣物数量。通过实际测试确定衣物护理机箱体内放置不同数量衣物时脉冲总数对应的数量分布范围确定脉冲阈值。
参照上述基于低电平次数进行衣物数量检测的流程，基于不同脉冲阈值设置相应的比对流程，以基于脉冲总数与脉冲阈值的比对精准确定衣物护理机箱体内的衣物数量。此外，还可以根据回波信号的其他指定类型回波信号(如高电平、或者指定电平次数)进行衣物数量检测。本申请实施例对具体的指定类型回波信号不做固定限制，在此不多赘述。
之后，根据已确定的衣物护理机箱体内的衣物数量，即可基于衣物数量确定当前箱体内关联设备的运行时间。
例如，衣物护理机设置三个衣架，则基于上述衣物数量检测方法判断三个衣架上的衣物数量，进而确定衣物护理机内的衣物数量。通过不同的衣服数量调整衣物护理总时间和调整护理程序。以衣物快速护理为例，一件衣服护理20分钟，两件护理25分钟，三件护理30分钟。更多的衣服时需要护理机提供更多的蒸汽量、更高辅热功率等，如一件衣服需要2分钟蒸汽量，每增加一件增加半分钟蒸汽量。对于一些涉及到喷淋流程的护理模式时，由于喷淋流程是每个衣物放置区域单独进行的，通过有效判断衣物的放置位置，可以避免喷淋流程无效运行，以此可达到更高效的护理效果，优化设备运行能效和使用体验。
综上描述可知，采用上述技术手段，通过统计各个回波信号中，指定类型的回波信号的目标数值，基于衣物护理机箱体内放置不同数量衣物时，衣物数量与指定类型的回波信号数量存在对应关系的特点，通过统计整个衣物护理机箱体内指定类型的回波信号的数量，以进行衣物数量检测，以此可以综合衣物护理机箱体内各个区域对回波信号的影响，规避通过回波时间检测衣物时导致的信号干扰问题，进而提升衣物数量检测精度。进一步地，在进行衣物护理时，根据精准检测的衣物数量，可以适应性调整衣物护理机的运行时长，确保衣物护理机准确调整运行时长，避免衣物护理机运行时间过长导致能耗浪费，优化衣物护理机的能效管理效果，优化用户使用体验。
上述主要从方法的角度对本申请实施例提供的方案进行了介绍。为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算 法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对衣物数量检测装置(该衣物数量检测装置可以为上述衣物护理机，也可以为上述衣物护理机中的处理器)进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
在上述实施例的基础上，图11为本申请实施例提供的一种衣物数量检测装置的结构示意图。
参考图11，本实施例提供的衣物数量检测装置应用于包括至少两个封闭式超声波收发器的衣物护理机，封闭式超声波收发器与衣物护理机的箱体内的衣物检测区域对应设置，衣物数量检测装置包括：获取模块21，统计模块22和确定模块23。
其中，获取模块21用于确定每个封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量；回波信号为封闭式超声波收发器发送的超声波信号被障碍物反射后的信号。
统计模块22用于根据确定出的指定类型的回波信号的数量，确定目标数值，目标数值用于表征各个封闭式超声波收发器获取到的指定类型的回波信号的数量之和。
确定模块23用于根据目标数值，确定衣物护理机的箱体内的衣物数量。
可选地，确定模块23具体用于：
若目标数值大于或等于第一阈值，确定衣物数量为零；
若目标数值大于第二阈值，且小于第一阈值，确定衣物数量为一；第二阈值小于第一阈值；
若目标数值小于或等于第三阈值，确定衣物数量为N；第三阈值小于第二阈值；
若目标数值小于第二阈值，且大于第三阈值，确定衣物数量大于1且小于N。
可选地，确定模块23还用于：在确定衣物数量为一时，确定第一封闭式超声波收发器，第一封闭式超声波收发器是N个封闭式超声波收发器中接收到指定类型的回波信号的数量最小的封闭式超声波收发器；
确定衣物护理机的箱体内的衣物位于第一封闭式超声波收发器对应的衣物检测区域。
可选地，确定模块23具体用于：在N等于三，目标数值小于第二阈值，且大于第三阈值时，确定衣物数量为二。
可选地，确定模块23还用于：在确定衣物数量为二时，
确定第二封闭式超声波收发器，第二封闭式超声波收发器是三个封闭式超声波收发器中接收到指定类型的回波信号的数量最多的封闭式超声波收发器；
确定衣物护理机的箱体内，位于第二封闭式超声波收发器对应的衣物检测区域无衣物。
可选地，获取模块具体用于：基于超声波信号发送时序依次确定每个封闭式超声波收发器获取到的指定类型的回波信号的数量，超声波信号发送时序用于控制各个封闭式超声波收发器在对应的超声波信号发送时序发送超声波信号。
可选地，获取模块具体用于：
确定第一时刻，第一时刻为封闭式超声波收发器接收到首个指定类型的回波信号的时刻；
从第一时刻起，在采样时长内按照预设频率对接收到的回波信号进行采样；
确定采样到的回波信号中，指定类型的回波信号的数量。
可选地，上述指定类型的回波信号包括处于低电平状态的回波信号。
上述，通过确定每个封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量；回波信号为封闭式超声波收发器发送的超声波信号被障碍物反射后的信号；根据确定出的指定类型的回波信号的数量，确定目标数值，目标数值用于表征各个封闭式超声波收发器获取到的指定类型的回波信号的数量之和；根据目标数值，确定衣物护理机的箱体内的衣物数量。采用上述技术手段，通过统计各个回波信号中，指定类型的回波信号的目标数值，以进行衣物数量检测，有效地避免了衣物护理机箱体内各个区域对回波信号的影响， 规避通过回波时间检测衣物时导致的信号干扰问题，进而提升衣物数量检测精度。
进一步地，在进行衣物护理时，根据精准检测的衣物数量，可以适应性调整衣物护理机的运行时长，确保衣物护理机准确调整运行时长，避免衣物护理机运行时间过长导致能耗浪费，优化衣物护理机的能效管理效果，优化用户使用体验。
本申请实施例提供的衣物数量检测装置可以用于执行上述实施例一提供的衣物数量检测方法，具备相应的功能和有益效果。
在上述实施例的基础上，本申请实施例提供了一种衣物护理机，参照图12，该衣物护理机包括：处理器31、存储器32、通信模块33、输入装置34、输出装置35及封闭式超声波收发器36。
该衣物护理机中处理器的数量可以是一个或者多个，该衣物护理机中的存储器的数量可以是一个或者多个。该衣物护理机的处理器、存储器、通信模块、输入装置、输出装置及封闭式超声波收发器可以通过总线或者其他方式连接。
存储器32作为一种计算机可读存储介质，可用于存储软件程序、计算机可执行程序以及模块，如本申请任意实施例的衣物数量检测方法对应的程序指令/模块(例如，衣物数量检测装置中的获取模块，统计模块和确定模块)。
存储器32可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序.存储数据区可存储根据设备的使用所创建的数据等。此外，存储器32可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储器32可进一步包括相对于处理器远程设置的存储器，这些远程存储器可以通过网络连接至设备。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
通信模块33用于进行数据传输，封闭式超声波收发器36用于发送超声波信号，并接收超声波信号的回波信号。
处理器31通过运行存储在存储器中的软件程序、指令以及模块，从而执行设备的各种功能应用以及数据处理，即实现上述的衣物数量检测方法。
输入装置34可用于接收输入的数字或字符信息，以及产生与设备的用户设置以及功能控制有关的键信号输入。输出装置35可包括显示屏等显示设备。
上述提供的衣物护理机可用于执行上述实施例提供的衣物数量检测方法， 具备相应的功能和有益效果。
在上述实施例的基础上，本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质包括计算机指令，当计算机指令在衣物护理机上运行时，使得衣物护理机执行如上述实施例所述的衣物数量检测方法。
存储介质——任何的各种类型的存储器设备或存储设备。术语“存储介质”旨在包括：安装介质，例如CD-ROM、软盘或磁带装置；计算机系统存储器或随机存取存储器，诸如DRAM、DDR RAM、SRAM、EDO RAM，兰巴斯(Rambus)RAM等；非易失性存储器，诸如闪存、磁介质(例如硬盘或光存储)；寄存器或其它相似类型的存储器元件等。存储介质可以还包括其它类型的存储器或其组合。另外，存储介质可以位于程序在其中被执行的第一计算机系统中，或者可以位于不同的第二计算机系统中，第二计算机系统通过网络(诸如因特网)连接到第一计算机系统。第二计算机系统可以提供程序指令给第一计算机用于执行。术语“存储介质”可以包括驻留在不同位置中(例如在通过网络连接的不同计算机系统中)的两个或更多存储介质。存储介质可以存储可由一个或多个处理器执行的程序指令(例如具体实现为计算机程序)。
本申请实施例还提供一种计算机程序产品，该计算机程序产品包括计算机指令，当所述计算机指令在衣物护理机上运行时，使得衣物护理机执行如上所述实施例所述的衣物数量检测方法。
上述实施例中提供的衣物数量检测装置、存储介质及衣物护理机可执行本申请任意实施例所提供的衣物数量检测方法，未在上述实施例中详尽描述的技术细节，可参见本申请任意实施例所提供的衣物数量检测方法。
上述仅为本申请的较佳实施例及所运用的技术原理。本申请不限于这里所述的特定实施例，对本领域技术人员来说能够进行的各种明显变化、重新调整及替代均不会脱离本申请的保护范围。因此，虽然通过以上实施例对本申请进行了较为详细的说明，但是本申请不仅仅限于以上实施例，在不脱离本申请构思的情况下，还可以包括更多其他等效实施例，而本申请的范围由权利要求的范围决定。

Claims (18)

  1. 一种衣物数量检测方法，应用于包括N个封闭式超声波收发器的衣物护理机，所述封闭式超声波收发器与衣物护理机的箱体内的衣物检测区域对应设置，N为大于或等于2的正整数，所述衣物数量检测方法包括：
    确定每个所述封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量；所述回波信号为所述封闭式超声波收发器发送的超声波信号被障碍物反射后的信号；
    根据确定出的指定类型的回波信号的数量，确定目标数值，所述目标数值用于表征各个所述封闭式超声波收发器获取到的指定类型的回波信号的数量之和；
    根据所述目标数值，确定所述衣物护理机的箱体内的衣物数量。
  2. 根据权利要求1所述的衣物数量检测方法，其特征在于，所述根据所述目标数值，确定所述衣物护理机的箱体内的衣物数量，包括：
    若所述目标数值大于或等于第一阈值，确定所述衣物数量为零；
    若所述目标数值大于第二阈值，且小于所述第一阈值，确定所述衣物数量为一；所述第二阈值小于所述第一阈值；
    若所述目标数值小于或等于第三阈值，确定所述衣物数量为N；所述第三阈值小于所述第二阈值；
    若所述目标数值小于所述第二阈值，且大于所述第三阈值，确定所述衣物数量大于1且小于N。
  3. 根据权利要求2所述的衣物数量检测方法，其特征在于，所述确定所述衣物数量为一后，所述衣物数量检测方法还包括：
    确定第一封闭式超声波收发器，所述第一封闭式超声波收发器是所述N个封闭式超声波收发器中接收到指定类型的回波信号的数量最小的封闭式超声波收发器；
    确定所述衣物护理机的箱体内的衣物位于所述第一封闭式超声波收发器对应的衣物检测区域。
  4. 根据权利要求2所述的衣物数量检测方法，其特征在于，N等于三，所述确定所述衣物数量大于1且小于N，包括：
    确定所述衣物数量为二。
  5. 根据权利要求4所述的衣物数量检测方法，其特征在于，确定所述衣物数量为二,所述衣物数量检测方法还包括：
    确定第二封闭式超声波收发器，所述第二封闭式超声波收发器是三个封闭式超声波收发器中接收到指定类型的回波信号的数量最多的封闭式超声波收发器；
    确定所述衣物护理机的箱体内，位于所述第二封闭式超声波收发器对应的衣物检测区域无衣物。
  6. 根据权利要求1-5中任意一项所述的衣物数量检测方法，其特征在于，所述确定每个所述封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量，包括：
    基于超声波信号发送时序依次确定每个所述封闭式超声波收发器获取到的指定类型的回波信号的数量，所述超声波信号发送时序用于控制各个所述封闭式超声波收发器在对应的所述超声波信号发送时序发送超声波信号。
  7. 根据权利要求1-5中任意一项所述的衣物数量检测方法，其特征在于，所述确定每个所述封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量，包括：
    确定第一时刻，所述第一时刻为所述封闭式超声波收发器接收到首个指定类型的回波信号的时刻；
    从所述第一时刻起，在采样时长内按照预设频率对接收到的回波信号进行采样；
    确定采样到的回波信号中，指定类型的回波信号的数量。
  8. 根据权利要求1-5中任意一项所述的衣物数量检测方法，其特征在于，所述指定类型的回波信号包括处于低电平状态的回波信号。
  9. 一种衣物数量检测装置，应用于包括N个封闭式超声波收发器的衣物护理机，所述封闭式超声波收发器与衣物护理机的箱体内的衣物检测区域对应设置，N为大于或等于2的正整数，所述衣物数量检测装置包括：
    获取模块，用于确定每个所述封闭式超声波收发器在各自采样时长内获取到的指定类型的回波信号的数量；所述回波信号为所述封闭式超声波收发器发送的超声波信号被障碍物反射后的信号；
    统计模块，用于根据确定出的指定类型的回波信号的数量，确定目标数值，所述目标数值用于表征各个所述封闭式超声波收发器获取到的指定类型的回波信号的数量之和；
    确定模块，用于根据所述目标数值，确定所述衣物护理机的箱体内的衣物 数量。
  10. 根据权利要求9所述的衣物数量检测装置，其特征在于，所述确定模块具体用于：
    若所述目标数值大于或等于第一阈值，确定所述衣物数量为零；
    若所述目标数值大于第二阈值，且小于所述第一阈值，确定所述衣物数量为一；所述第二阈值小于所述第一阈值；
    若所述目标数值小于或等于第三阈值，确定所述衣物数量为N；所述第三阈值小于所述第二阈值；
    若所述目标数值小于所述第二阈值，且大于所述第三阈值，确定所述衣物数量大于1且小于N。
  11. 根据权利要求10所述的衣物数量检测装置，其特征在于，所述确定模块在确定所述衣物数量为一时，还用于：
    确定第一封闭式超声波收发器，所述第一封闭式超声波收发器是所述N个封闭式超声波收发器中接收到指定类型的回波信号的数量最小的封闭式超声波收发器；
    确定所述衣物护理机的箱体内的衣物位于所述第一封闭式超声波收发器对应的衣物检测区域。
  12. 根据权利要求10所述的衣物数量检测装置，其特征在于，N等于三，所述目标数值小于所述第二阈值，且大于所述第三阈值，所述确定模块具体用于：
    确定所述衣物数量为二。
  13. 根据权利要求12所述的衣物数量检测装置，其特征在于，所述确定模块在确定所述衣物数量为二时，还用于：
    确定第二封闭式超声波收发器，所述第二封闭式超声波收发器是三个封闭式超声波收发器中接收到指定类型的回波信号的数量最多的封闭式超声波收发器；
    确定所述衣物护理机的箱体内，位于所述第二封闭式超声波收发器对应的衣物检测区域无衣物。
  14. 根据权利要求9-13任意一项所述的衣物数量检测装置，其特征在于，所述获取模块具体用于：
    基于超声波信号发送时序依次确定每个所述封闭式超声波收发器获取到的指定类型的回波信号的数量，所述超声波信号发送时序用于控制各个所述封闭 式超声波收发器在对应的所述超声波信号发送时序发送超声波信号。
  15. 根据权利要求9-13任意一项所述的衣物数量检测装置，其特征在于，所述获取模块具体用于：
    确定第一时刻，所述第一时刻为所述封闭式超声波收发器接收到首个指定类型的回波信号的时刻；
    从所述第一时刻起，在采样时长内按照预设频率对接收到的回波信号进行采样；
    确定采样到的回波信号中，指定类型的回波信号的数量。
  16. 根据权利要求9-13任意一项所述的衣物数量检测装置，其特征在于，所述指定类型的回波信号包括处于低电平状态的回波信号。
  17. 一种衣物护理机，其特征在于，包括：
    N个封闭式超声波收发器，存储器以及处理器，N为大于或等于2的正整数，所述封闭式超声波收发器连接所述处理器；
    所述存储器，用于存储计算机执行指令；
    所述处理器用于调用所述计算机执行指令以及控制所述封闭式超声波收发器的运行，使得所述衣物护理机运行时，执行所述计算机执行指令以实现如权利要求1-8任一所述的衣物数量检测方法。
  18. 一种计算机可读存储介质，其特征在于，包括计算机指令，当所述计算机指令在衣物护理机上运行时，使得所述衣物护理机执行如权利要求1-8任一所述的衣物数量检测方法。
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