WO2023087466A1 - 一种衣物检测方法、装置、衣物护理机及存储介质 - Google Patents

一种衣物检测方法、装置、衣物护理机及存储介质 Download PDF

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Publication number
WO2023087466A1
WO2023087466A1 PCT/CN2021/138571 CN2021138571W WO2023087466A1 WO 2023087466 A1 WO2023087466 A1 WO 2023087466A1 CN 2021138571 W CN2021138571 W CN 2021138571W WO 2023087466 A1 WO2023087466 A1 WO 2023087466A1
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Prior art keywords
pulses
clothes
sub
clothing
ultrasonic transceiver
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PCT/CN2021/138571
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English (en)
French (fr)
Inventor
王世宇
方化
Original Assignee
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 WO2023087466A1 publication Critical patent/WO2023087466A1/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 clothes, a clothes care machine and a storage medium.
  • the existing clothes care machine Before the existing clothes care machine performs clothes care, it can be determined whether there are clothes hung on the hangers provided inside the care machine cabinet, and then the quantity of clothes inside the cabinet can be determined.
  • the follow-up clothes care machine When the follow-up clothes care machine performs clothes care, it can adapt and adjust the running time according to the determined number of clothes, so as to effectively control power consumption and improve user experience.
  • the way for the clothing care machine to detect whether the hanger is clothing is: to control the sending end of the closed ultrasonic detection device to send ultrasonic signals, and then determine the echo time of the echo signal received by the receiving end of the closed ultrasonic detection device, and according to the echo time The wave time determines which hanger has the item on it.
  • 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., causing interference to the reception of the echo signal, which in turn affects the accuracy of clothing detection and leads to misjudgment. . Therefore, the accuracy of the above method for determining whether clothes are hung on the hanger is relatively low.
  • the embodiments of the present application provide a clothes detection method and device, a clothes care machine and a storage medium, so as to solve the problem of low clothes detection accuracy of existing ultrasonic detection devices.
  • an embodiment of the present application provides a method for detecting clothes, which is applied to a clothes care machine including an open ultrasonic transceiver.
  • the method for detecting clothes includes: acquiring (The preset time length is proportional to the depth of the liner of the clothing care machine) received echo signals; and then determine at least one pulse number, which is the number of echo signals detected by the open ultrasonic transceiver in a sub-time length , the preset duration includes at least two sub-durations; after that, if at least one pulse number satisfies the preset condition, it is determined that there is clothing in the area corresponding to the open ultrasonic transceiver.
  • the echo signal is the signal after the ultrasonic signal sent by the open ultrasonic transceiver is reflected by the obstacle.
  • the number of pulses of the echo signal at different sub-times is also different. Based on this, the solution provided by the embodiment of this application detects the number of pulses corresponding to the sub-duration in the echo signal to detect the clothes, so that the interference effects of different time periods on the echo signals can be integrated, and the interference signals in other time periods can be avoided from affecting the clothes. The detection results, thereby improving the accuracy of clothing detection.
  • the number of clothes in the clothes care machine can be further determined during subsequent clothes care, and the running time of the clothes care machine can be adaptively adjusted according to the accurately detected number of clothes to ensure that the clothes
  • the nursing machine can accurately adjust the running time, avoid the waste of energy consumption caused by the long running time of the clothing care machine, optimize the energy efficiency management effect of the clothing care machine, and optimize the user experience.
  • the at least two sub-durations include at least two of the first sub-duration, the second sub-duration, and the third sub-duration, the second sub-duration is located after the first sub-duration, and the third sub-duration After the second sub-time length;
  • the number of echo signals detected by the open ultrasonic transceiver in the first sub-time length is the first pulse number
  • the number of echo signals detected in the second sub-time length is the second pulse number
  • the number of echo signals detected in the third sub-time length is a third number of pulses;
  • the at least one number of pulses includes at least one of the first number of pulses, the second number of pulses, and the third number of pulses.
  • preset conditions include: when at least one number of pulses includes the first number of pulses, the first number of pulses is greater than or equal to the first threshold; when at least one number of pulses includes the second number of pulses, the second pulse The number is greater than or equal to the second threshold; where at least one number of pulses includes a third number of pulses, the third number of pulses is less than or equal to the third threshold.
  • the at least one number of pulses includes a first number of pulses, a second number of pulses, and a third number of pulses
  • the clothes detection method further includes:
  • the first number of pulses is less than the first threshold
  • the second number of pulses is less than the second threshold
  • the third number of pulses is greater than the third threshold
  • the at least one number of pulses includes a target number of pulses and a third number of pulses
  • the target number of pulses includes a first number of pulses or a second number of pulses
  • the clothes detection method further includes:
  • the target pulse quantity includes the first pulse quantity
  • the first pulse quantity is less than the fourth threshold, and the third pulse quantity is greater than the third threshold, it is determined that there is no clothing in the area corresponding to the open ultrasonic transceiver
  • the number includes the second pulse number
  • the second pulse number is less than the fifth threshold and the third pulse number is greater than the third threshold, it is determined that there is no clothing in the area corresponding to the open ultrasonic transceiver.
  • the clothing detection method also includes:
  • the embodiment of the present application provides a clothing detection device, which is applied to a clothing care machine including an open ultrasonic transceiver.
  • the clothing detection device includes: an acquisition module, configured to acquire The echo signal received within the preset time length (the preset time length is proportional to the depth of the liner of the clothing care machine); the detection module is used to determine at least one pulse number, which is detected by the open ultrasonic transceiver in a sub-time length The number of echo signals received; a determination module, configured to determine that there is clothing in the area corresponding to the open ultrasonic transceiver when at least one pulse number meets a preset condition.
  • the echo signal is a signal after the ultrasonic signal sent by the open ultrasonic transceiver is reflected by an obstacle, and the preset duration includes at least two sub-durations.
  • the at least two sub-durations include at least two of the first sub-duration, the second sub-duration, and the third sub-duration, wherein the second sub-duration is located after the first sub-duration, and the third sub-duration
  • the sub-duration is after the second sub-duration
  • the number of echo signals detected by the open ultrasonic transceiver at the first sub-duration is the first pulse number
  • the number of echo signals detected at the second sub-duration is the second
  • the number of pulses, the number of echo signals detected in the third sub-time length is the third number of pulses
  • the at least one number of pulses includes at least one of the first number of pulses, the second number of pulses, and the third number of pulses
  • preset conditions include: when at least one number of pulses includes the first number of pulses, the first number of pulses is greater than or equal to the first threshold; when at least one number of pulses includes the second number of pulses, the second pulse The number is greater than or equal to the second threshold; where at least one number of pulses includes a third number of pulses, the third number of pulses is less than or equal to the third threshold.
  • the at least one number of pulses includes a first number of pulses, a second number of pulses, and a third number of pulses
  • the determining module is further configured to:
  • the first number of pulses is less than the first threshold
  • the second number of pulses is less than the second threshold
  • the third number of pulses is greater than the third threshold
  • the at least one pulse number includes a target pulse number and a third pulse number
  • the target pulse number includes a first pulse number or a second pulse number
  • the determining module is further configured to:
  • the target pulse quantity includes the first pulse quantity
  • the first pulse quantity is less than the fourth threshold, and the third pulse quantity is greater than the third threshold, it is determined that there is no clothing in the area corresponding to the open ultrasonic transceiver
  • the number includes the second pulse number
  • the second pulse number is less than the fifth threshold and the third pulse number is greater than the third threshold, it is determined that there is no clothing in the area corresponding to the open ultrasonic transceiver.
  • the determining module is also used for: in the case of determining that there are clothes in the area corresponding to the open ultrasonic transceiver, determine that the number of clothes is one.
  • the embodiment of the present application provides a clothes care machine, including:
  • An open ultrasonic transceiver a memory and one or more processors, the open ultrasonic transceiver is connected to the processor;
  • the memory is used to store computer-executable instructions
  • the processor is used for invoking the computer-executed instructions and controlling the operation of the open ultrasonic transceiver, so that when the clothes care machine is running, the computer-executed instructions are executed to implement the clothes detection method according to the first aspect.
  • an embodiment of the present application provides a computer-readable storage medium, including computer instructions, and when the computer instructions are run on a clothes care machine, the clothes care machine executes the clothes detection method according to the first aspect .
  • 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 schematic structural view of a clothes care machine in an embodiment of the present application
  • Fig. 2 is a schematic diagram of the connection between the clothing detection device and the ultrasonic board in the embodiment of the present application;
  • Fig. 3 is a flow chart of a method for detecting 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 the clothes detection flowchart of the clothes care machine in the embodiment of the present application.
  • Fig. 7 is a schematic structural diagram of a clothing detection device provided in an embodiment of the present application.
  • Fig. 8 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.
  • a clothing detection method provided by the present application aims to determine whether the number of pulses satisfies the preset condition based on the number of pulses in different sub-times of the echo signal by detecting the number of pulses in at least one sub-time in the echo signal, so as to determine the Whether there is clothing in the area corresponding to the open ultrasonic transceiver, and then realize the accurate detection of clothing.
  • 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 the ultrasonic signal encounters obstacles during propagation, it will be reflected back to the open ultrasonic transceiver, and this part of the signal is the echo signal.
  • the quantitative characteristics of the echo signal of this part of the echo signal in different time periods are used to accurately detect the clothes in the corresponding area.
  • Fig. 1 shows a schematic structural diagram of a clothes care machine.
  • an ultrasonic panel 11 and a clothes hanger 12 are arranged in the tank of the clothes care machine, and the clothes hanger 12 is used for hanging clothes.
  • the clothes care machine is running, the clothes are hung on the hanger 12, and the equipment such as spraying and drying provided in the inner tank of the box is used 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.
  • the ultrasonic board 11 can be installed on the back panel inside the airtight box (that is, installed on the back panel opposite the door panel); it can also be installed on the top of the airtight box, or on the bottom of the airtight box, or on the door panel
  • the embodiment of the present application does not impose fixed restrictions on its specific setting location.
  • 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 open 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 open ultrasonic transceiver, and then carry out the process through the echo signal. Clothing inspection.
  • the open ultrasonic transceiver is installed on 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 detection can be optimized.
  • the setting position of the open ultrasonic transceiver can be adaptively adjusted to accurately send and receive signals corresponding to the clothing detection area.
  • Each open ultrasonic transceiver in the embodiment of the present application is connected with the processor in the clothing care machine.
  • Figure 2 shows how each open ultrasonic transceiver is connected to the processor in the laundry care machine.
  • the processor is connected through the port Tx1-io
  • the transmitting probe Tx1 of the open ultrasonic transceiver 1 the processor connects the receiving probe Rx1 of the open ultrasonic transceiver 1 through the port Rx1-io; the processor connects the transmitting probe Tx2 of the open ultrasonic transceiver 2 through the port Tx2-io, and processes
  • the processor is connected to the receiving probe Rx2 of the open ultrasonic transceiver 2 through the port Rx2-io; the processor is connected to the transmitting probe Tx3 of the open ultrasonic transce
  • the clothing detection device When performing clothing detection, the clothing detection device sends a pulse signal to the sending probe corresponding to the open ultrasonic transceiver, so that the ultrasonic probe sends an ultrasonic signal to its detection area, and then receives the echo of the ultrasonic signal through the receiving probe of the ultrasonic transceiver Based on the echo signal, it can be analyzed to determine whether there is clothing in the area corresponding to the detection of the current open ultrasonic transceiver.
  • FIG. 3 shows a flow chart of a method for detecting clothes provided in Embodiment 1 of the present application.
  • the clothes detection method provided in this embodiment can be executed by a clothes detection device.
  • the clothing detection device can be realized by means of software and/or hardware.
  • the clothing detection device may be the above-mentioned clothing care machine, or a processor in the above-mentioned clothes care machine, or a control module for detecting the amount of clothes in the above-mentioned clothes care machine.
  • the clothing detection method specifically includes:
  • the echo signal is the signal after the ultrasonic signal sent by the open ultrasonic transceiver is reflected by the obstacle.
  • the preset duration is proportional to the inner tank depth of the laundry care machine.
  • the clothing detection device When performing clothing detection, the clothing detection device sends a pulse signal to the sending probe of the open ultrasonic transceiver set corresponding to the area according to the current area to be detected, so that the sending probe emits ultrasonic signals in the current area to be detected.
  • the clothing detection device can further analyze and process to determine whether there is clothing in the current detection area.
  • the ultrasonic signal emitted by the sending probe 111 of the open ultrasonic transceiver encounters the clothing 13 on the way of propagation.
  • the echo signal will be reflected to the open ultrasonic transceiver, and this part of the echo signal will be received by the receiving probe 112 .
  • the ultrasonic signal emitted by the sending probe 111 of the open ultrasonic transceiver will reach the wall of the inner tank of the clothing care machine.
  • the echo signal is reflected to the open ultrasonic transceiver, and this part of the echo signal is received by the receiving probe 112 .
  • the open 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 embodiment of the present application obtains this part of the echo signal for analysis and processing, and then can determine whether there is clothing in the detection area of the current open ultrasonic transceiver according to different signal characteristics of the echo signal.
  • the open ultrasonic transceiver After the open ultrasonic transceiver sends out the ultrasonic signal, it will first reach the receiving probe of the open ultrasonic transceiver when encountering the echo signal reflected by the clothing.
  • the return time is relatively long. Therefore, in order to completely obtain the echo signal of the ultrasonic signal for effective clothing detection, it is necessary to set the preset duration of the echo signal according to the depth of the inner liner of the cabinet. Subsequently, when the clothing detection device acquires the echo signal received by the receiving probe, it extracts the echo signal according to the preset time length.
  • the preset duration needs to be proportional to the depth of the liner of the clothes care machine.
  • the longer the depth of the inner tank the later the echo signal reflected by the inner tank wall is received by the receiving probe.
  • it is necessary to preset the time according to the depth of the tank inner tank so as to ensure that within the preset time, the receiving probe can completely receive the echo signal returned from the inner tank wall of the clothing care machine, optimizing Echo signal detection effect.
  • an open ultrasonic transceiver is used as a device for sending ultrasonic signals and receiving echo signals thereof.
  • the open ultrasonic transceiver has the characteristics of convergent transmission waveform, small angle, small aftershock and long range, which can effectively avoid unnecessary signal interference and realize accurate fixed-point detection of ultrasonic signals.
  • the clothing detection device before obtaining the echo signal received by the open ultrasonic transceiver within a preset time period, the clothing detection device sends a set number and a set frequency of pulse signals to the sending probe, so that the sending probe sends the corresponding detection
  • the channel sends the ultrasonic signal.
  • the set number and set frequency of pulse signal transmission can be adaptively set.
  • S120 Determine at least one pulse number, where the pulse number is the number of echo signals detected by the open ultrasonic transceiver within a sub-time duration, and the preset duration includes at least two sub-time durations.
  • the signal During the transmission of ultrasonic signals, a part of the signal will go directly from the sending probe to the receiving probe in a short period of time. This part of the signal does not pass through the generalized propagation medium (such as the air in the clothes processor), but passes through the open ultrasonic transceiver.
  • the hardware structure or circuit trace conducts the conduction. This part of the signal is generally called the aftershock signal. Taking the clothing care machine in the embodiment of the present application as an example, aftershock signals generally appear concentrated within 0.5 ms after the ultrasonic signal is sent out. According to the specific hardware structure and circuit routing design of the open ultrasonic transceiver, this part of the signal can be determined by adaptive experiment detection.
  • the clothing detection device can start from the pre-set time according to the receiving period corresponding to the aftershock signal. Among the echo signals within the set time length, the analysis and processing of this part of the signal is excluded.
  • the echo signal when there is no clothing in the detection area, during the transmission of the corresponding ultrasonic signal, it encounters the echo signal reflected from the inner liner of the box, and it will return to the open ultrasonic wave at the corresponding sub-duration of the preset duration. at the transceiver. According to the actual test, the echo signal also presents a regular change on the time axis. That is, in the segmented echo signal corresponding to the sub-time length, the number of pulses shows a certain regularity.
  • the clothes detection method provided in the embodiment of the present application determines the number of pulses in each sub-time length of the preset time length, and performs clothes detection according to the number of pulses.
  • the aftershock signal the echo signal reflected by the clothing or the echo signal reflected by the inner liner of the box without clothing will reach the open ultrasonic transceiver at different time intervals. That is, according to whether there are clothes placed in the detection area corresponding to the open ultrasonic transceiver, the echo signal will reach the ultrasonic transceiver in the corresponding time period.
  • At least two corresponding sub-durations are determined in the preset duration, and the at least two sub-durations are The echo signal is the aftershock signal, as well as the echo signal reflected by the clothing or the echo signal reflected by the inner liner of the box.
  • By counting the number of pulses of the echo signal in the at least two sub-durations it can be used as the data basis. It is judged whether there is clothing in the area corresponding to the open ultrasonic transceiver.
  • the at least two sub-durations in this embodiment include at least two of the first sub-duration, the second sub-duration, and the third sub-duration.
  • the second sub-duration is located after the first sub-duration
  • the third sub-duration is located after the second sub-duration.
  • the number of echo signals detected by the open ultrasonic transceiver in the first sub-time length is the first pulse number
  • the number of echo signals detected in the second sub-time length is the second pulse number
  • the number of echo signals detected in the third sub-time length is The number of echo signals is the third pulse number.
  • the at least one number of pulses includes at least one of a first number of pulses, a second number of pulses, and a third number of pulses.
  • the first sub-duration, the second sub-duration, and the third sub-duration may be the same or different, depending on the actual clothing detection scene setting.
  • the embodiment of the present application does not set a fixed limit on the sub-duration. Here Not much to say.
  • the at least one pulse number After determining at least one pulse number, it is judged whether the at least one pulse number satisfies the preset condition, and when it is determined that the corresponding pulse number satisfies the preset condition, it can be determined that there is clothing in the area corresponding to the open ultrasonic transceiver. Specifically, in the embodiment of the present application, by using the relationship between the number of pulses and the corresponding threshold as a preset condition, it is determined whether there is clothing in the area corresponding to the open ultrasonic transceiver according to the determined relationship.
  • the above-mentioned first duration and second sub-duration are set corresponding to the time period of the echo signal reflected by the clothing, and the formation of this part of the echo signal is due to the mutual bounce of the ultrasonic wave signal between the clothes and between the clothes and the side.
  • the number of first pulses detected by the first sub-duration and/or the number of pulses detected by the second sub-duration are compared with the corresponding threshold to determine whether the ultrasonic transceiver is placed with clothes .
  • the third sub-duration corresponds to the time period setting of the reflected echo signal in the cabinet.
  • the ultrasonic transceiver When the ultrasonic transceiver is placed in the corresponding area, the echo signal reflected in the cabinet encounters the obstruction of the clothing, resulting in multiple rebounds or signal failure. Absorption, so that when clothes are placed in the corresponding area and no clothes are placed, the number of pulses of the echo signal reflected back is different. Based on the number of pulses of this part of the echo signal, the number of pulses detected by the third sub-time length is compared with the corresponding threshold, so as to detect the clothes.
  • the corresponding sub-duration and the threshold value of the corresponding pulse number can be preset according to the different regularities of the change of the pulse number of the echo signal.
  • the amount of laundry is determined according to a magnitude relationship between at least one pulse amount and a corresponding threshold.
  • the echo signal obtained corresponding to the preset duration is divided into three segments according to the first sub-duration, the second sub-duration and the third sub-duration, and the number of pulses of each sub-duration is counted respectively, and then the corresponding threshold is compared according to the number of pulses Perform a clothing test.
  • the preset condition includes: when at least one number of pulses includes the first number of pulses, the first number of pulses is greater than or equal to the first threshold; or includes when at least one number of pulses includes the second number of pulses, The second number of pulses is greater than or equal to the second threshold; or, where at least one number of pulses includes a third number of pulses, the third number of pulses is less than or equal to the third threshold.
  • At least one pulse number includes the first pulse number, if the first pulse number is greater than or equal to the first threshold, it is determined that there is clothing in the area corresponding to the open ultrasonic transceiver.
  • at least one number of pulses includes the second number of pulses, if the second number of pulses is greater than or equal to a second threshold, it is determined that there is clothing in the area corresponding to the open ultrasonic transceiver.
  • at least one pulse number includes a third pulse number, if the third pulse number is less than or equal to a third threshold, it is determined that there is clothing in the area corresponding to the open ultrasonic transceiver.
  • the clothing detection device determines the echo signal received by the receiving probe within 4 milliseconds starting from the last pulse signal sent by the transmitting probe of the ultrasonic transceiver. Furthermore, this part of the echo signal is divided into 4 segments with a time interval of 1 millisecond, which are marked as t1, t2, t3 and t4. Wherein, since the echo signal in the time period t1 mainly includes aftershock signals, this part of the signal is excluded when performing clothing detection, and only at least a segment of the echo signal in t2, t3 and t4 is extracted for clothing detection.
  • the aftershock signal and the echo signal reflected by the inner tank wall in the absence of clothing are received in the time period t1 and t4 respectively.
  • the echo signal in the time period t2 and t3 There will also be a regularly changing waveform, which is formed due to the mutual bounce of the ultrasonic wave signal between the clothes, between the clothes and the side. Then by counting the number of pulses in the partial echo signals of t2, t3 and t4, which are recorded as n2, n3 and n4, and further comparing at least one of the number of pulses n2, n3 and n4 with the corresponding threshold, the clothes detection result is obtained.
  • the embodiment of the present application is based on the actual test, when there is clothing in the corresponding area, the pulse number change law of the first sub-time length and the second sub-time length echo signal, and when there is no clothing in the corresponding area , the change rule of the number of pulses of the third sub-duration echo signal, the first threshold is 25, the second threshold is 12, and the third threshold is 2.
  • n2 is greater than or equal to 25 pulses
  • t3 time period n3 is greater than or equal to 12 pulses
  • t4 time period n4 is less than or equal to 2 pulses, that is, n2 ⁇ 25 or n3
  • ⁇ 12 or n4 ⁇ 2 it is judged that there are clothes in the area corresponding to the current ultrasonic transceiver.
  • the clothes detection device When the number of pulses is less than the first threshold, the second number of pulses is less than the second threshold, and the third number of pulses is greater than the third threshold, it is determined that there is no clothing in the area corresponding to the open ultrasonic transceiver.
  • the clothing detection device will In the case of a number of pulses, if the first number of pulses is less than the fourth threshold and the third number of pulses is greater than the third threshold, it is determined that there is no clothing in the area corresponding to the open ultrasonic transceiver. In the case where the target number of pulses includes the second number of pulses, if the second number of pulses is less than the fifth threshold, and the third number of pulses is greater than the third threshold, it is determined that the area corresponding to the open ultrasonic transceiver is not Clothing is present.
  • the fourth threshold is 2
  • the fifth threshold is 2
  • the number of pulses in the t2 time period n2 is less than 25
  • the t3 time period n3 is less than 2 pulses
  • the t4 time period n4 When the number of pulses is greater than 2, that is, when n2 ⁇ 25, n3 ⁇ 12 and n4>2, it is judged that there is no clothing in the area corresponding to the current ultrasonic transceiver.
  • n2 is less than or equal to the number of 2 pulses in the t2 time period
  • n4 is greater than 2 pulses in the t4 time period
  • n3 is less than or equal to 2 pulses
  • the t4 time period When n4 is greater than the number of 2 pulses, that is, n2 ⁇ 25 or n3 ⁇ 12, and n4>2, it is judged that there is no clothes in the area corresponding to the current ultrasonic transceiver.
  • the embodiment of the present application is based on the changing law of the pulse number of the echo signal in the first sub-time length and the second sub-time length of the clothes in different dry or wet states, Set the first threshold, the second threshold, the third threshold, the fourth threshold and the fifth threshold to detect the clothes corresponding to the dry and wet states of the clothes respectively, so as to achieve a more accurate clothes detection effect.
  • the corresponding number of sub-durations and thresholds can be adaptively set, and the corresponding rated judgment process can be selected for clothing detection.
  • the clothes detection device determines that the number of clothes is one when it is determined that there are clothes in the area corresponding to the open ultrasonic transceiver. By outputting the number of clothes in the detected area after determining the clothes detection result in the area corresponding to the open ultrasonic transceiver, it is convenient to count the number of clothes in the clothes care machine.
  • the clothing detection device can determine the number of clothing in the clothing care machine based on the clothing detection results by counting the clothing detection results in the corresponding areas of the open ultrasonic transceivers.
  • ultrasonic transceivers are provided corresponding to each hanger used to hang clothes in the clothing care machine, so that the clothing detection device can perform ultrasonic signal detection corresponding to the clothing placement area based on each ultrasonic transceiver, and then based on the feedback
  • the wave signal judges whether there are clothes in each detection area (that is, each hanger). By counting the clothes detection results of each hanger, the current number of clothes in the clothes care machine can be determined, and then the running time of the clothes care machine can be adaptively adjusted.
  • the clothes care machine is provided with three hangers, it is judged based on the above clothes detection method whether there are clothes on the three hangers, 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.
  • the clothing detection device can also pre-configure the ultrasonic signal transmission timing of each open ultrasonic transceiver, and control each open ultrasonic transceiver to send ultrasonic signals at the corresponding ultrasonic signal transmission timing.
  • the clothing care machine is equipped with multiple ultrasonic transceivers to detect clothes in multiple detection areas, in order to avoid the ultrasonic signal detection by the ultrasonic transceivers in parallel, the mutual interference of signals in each detection area will cause the received echo The signal contains signals reflected from other detection areas, which interfere with the clothing detection in the current detection area.
  • each open ultrasonic transceiver when performing clothing detection, the ultrasonic signal transmission timing of each open ultrasonic transceiver is preset, so that each open ultrasonic transceiver transmits ultrasonic signals at different time points in sequence.
  • each open ultrasonic transceiver will also receive ultrasonic signals at different time points in sequence.
  • the echo signal is the signal after the ultrasonic signal sent by the open ultrasonic transceiver is reflected by obstacles; the preset time length and clothing care Proportional to the inner tank depth of the machine; determine at least one pulse number, the pulse number is the number of echo signals detected by the open ultrasonic transceiver in a sub-time length, and the preset time length includes at least two sub-time lengths; at least one pulse number When the preset condition is met, it is determined that there is clothing in the area corresponding to the open ultrasonic transceiver.
  • the present application can accurately adjust the running time of the clothes care machine by accurately determining the number of clothes in the clothes care machine, and optimize the energy efficiency and user experience of the equipment.
  • the embodiment of the present application can divide the functional modules of the clothing detection device (the clothing detection device can be the above-mentioned clothing care machine or the processor in the above-mentioned clothes care machine) according to the above-mentioned method example, for example, it can correspond to each function division
  • Each functional module can also integrate two or more functions 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. 7 is a schematic structural diagram of a clothes detection device provided by the present application.
  • the clothes detection device provided in this embodiment specifically includes: an acquisition module 21 , a detection module 22 and a determination module 23 .
  • the obtaining module 21 is used to obtain the echo signal received by the open ultrasonic transceiver within the preset duration, and the echo signal is the signal reflected by the obstacle after the ultrasonic signal sent by the open ultrasonic transceiver; the preset duration is related to the clothing The inner liner depth of the nursing machine is directly proportional.
  • the detection module 22 is used to determine at least one pulse number, the pulse number is the number of echo signals detected by the open ultrasonic transceiver in a sub-time period, and the preset time period includes at least two sub-time periods.
  • the determining module 23 is configured to determine that there is clothing in the area corresponding to the open ultrasonic transceiver when at least one pulse number satisfies a preset condition.
  • the at least two sub-durations include at least two of the first sub-duration, the second sub-duration, and the third sub-duration, the second sub-duration is located after the first sub-duration, and the third sub-duration is located after the second sub-duration Afterwards;
  • the number of echo signals detected by the open ultrasonic transceiver at the first sub-time length is the first pulse number
  • the number of echo signals detected at the second sub-time length is the second pulse number
  • the number of detected echo signals is a third number of pulses;
  • the at least one number of pulses includes at least one of the first number of pulses, the second number of pulses, and the third number of pulses.
  • the preset condition includes: when at least one number of pulses includes the first number of pulses, the first number of pulses is greater than or equal to the first threshold; when at least one number of pulses includes the second number of pulses, the second pulse The number is greater than or equal to the second threshold; where at least one number of pulses includes a third number of pulses, the third number of pulses is less than or equal to the third threshold.
  • the at least one pulse quantity includes a first pulse quantity, a second pulse quantity and a third pulse quantity.
  • the above-mentioned determining module 23 is also used for:
  • the first number of pulses is less than the first threshold
  • the second number of pulses is less than the second threshold
  • the third number of pulses is greater than the third threshold
  • the at least one pulse quantity includes a target pulse quantity and a third pulse quantity
  • the target pulse quantity includes the first pulse quantity or the second pulse quantity.
  • the determination module 23 is also used for:
  • the number of target pulses includes the first number of pulses
  • the first number of pulses is less than the fourth threshold
  • the third number of pulses is greater than the third threshold
  • the target number of pulses includes a second number of pulses
  • the second number of pulses is less than the fifth threshold
  • the third number of pulses is greater than the third threshold
  • the determining module 23 is further configured to: determine that the number of clothes is one when it is determined that there are clothes in the area corresponding to the open ultrasonic transceiver.
  • the echo signal is the signal after the ultrasonic signal sent by the open ultrasonic transceiver is reflected by obstacles; Proportional to the biliary depth; determine at least one pulse number, the pulse number is the number of echo signals detected by the open ultrasonic transceiver in a sub-time length, and the preset time length includes at least two sub-time lengths; at least one pulse number meets the preset In the case of the condition, it is determined that there is clothing in the area corresponding to the open ultrasonic transceiver.
  • the above technical means by detecting the number of pulses of at least one sub-time length in the echo signal, and by judging whether the number of pulses meets the preset conditions, it is determined whether there is clothing in the area corresponding to the open ultrasonic transceiver, so as to avoid other problems.
  • the interference signal of the time period affects the clothing detection result, thereby improving the accuracy of clothing detection.
  • the present application accurately determines the number of clothes in the clothes care machine, so that the clothes care machine can accurately adjust the running time, and optimize the energy efficiency and user experience of the equipment.
  • the clothes detection device provided in the embodiments of the present application can be used to implement the clothes detection method provided in the above embodiments, and has corresponding functions and beneficial effects.
  • the present application also provides a clothes care machine, referring to FIG. 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 open ultrasonic transceiver, processor, memory, communication module, input device and output device 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 the program instructions/modules corresponding to the clothing detection method described in any embodiment of the present application (for example, the clothing detection device) Acquire Module, Detect Module, and Determine Module).
  • the memory may mainly include an area for storing programs and an area for storing data.
  • the stored program area can store an operating system and an application program required by at least one function.
  • the storage data area can store data and the like created according to use of the device.
  • the memory may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices.
  • the memory may further include memory located remotely from the processor, which remote memory may be connected to the device via a network.
  • 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 open ultrasonic transceiver 36 is used for sending ultrasonic signals and receiving echo 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 clothes 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 clothing care machine provided above can be used to implement the clothing detection method provided in the first embodiment above, and has corresponding functions and beneficial effects.
  • the embodiment of the present application also provides 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 made to execute the clothes detection method as described in the above embodiments.
  • 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 clothes detection method as described above.
  • the clothing detection device, storage medium and clothing care machine provided in the above embodiments can implement the clothing detection method provided in any embodiment of the present application.
  • Clothing detection method provided.

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Abstract

一种衣物检测方法、装置、衣物护理机及存储介质，涉及超声波检测技术领域。通过获取衣物护理机内开放式超声波收发器在预设时长内接收的回波信号，回波信号为开放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；进而确定至少一个脉冲数量，该脉冲数量为开放式超声波收发器在一个子时长中检测到的回波信号的数量，该预设时长包括至少两个子时长；在至少一个脉冲数量满足预设条件的情况下，确定与开放式超声波收发器对应的区域存在衣物。该衣物检测方法、装置、衣物护理机及存储介质，根据不同数量衣物对应的脉冲数量处于固定数量范围的特点进行衣物检测，可以避免其余时段的干扰信号影响衣物检测结果，提升衣物检测精度。

Description

一种衣物检测方法、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202111357618.X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
现有的衣物护理机在进行衣物护理之前，可以确定出护理机箱体内部设置的衣架是否挂有衣物，进而确定箱体内部的衣物数量。后续衣物护理机在进行衣物护理时，可以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，衣物护理机检测衣架是否衣物的方式为：控制封闭式超声波检测装置的发送端发送超声波信号，进而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具体哪一个衣架挂有衣物。
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，对回波信号的接收造成干扰，进而影响衣物检测的准确度，导致误判的情况。因此，上述方法确定衣架上是否挂有衣物的准确度较低。
发明内容
本申请实施例提供一种衣物检测方法、装置、衣物护理机及存储介质，解决现有超声波检测装置的衣物检测准确度较低的问题。
在第一方面，本申请实施例提供了一种衣物检测方法，应用于包括开放式超声波收发器的衣物护理机，具体的，该衣物检测方法包括：获取开放式超声波收发器在预设时长内(预设时长与衣物护理机的内胆深度成正比)接收的回波信号；进而确定至少一个脉冲数量，该脉冲数量为开放式超声波收发器在一个子时长中检测到的回波信号的数量，该预设时长包括至少两个子时长；在此之后，在至少一个脉冲数量满足预设条件的情况下，确定与开放式超声波收发器对应的区域存在衣物。这里回波信号为开放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，对于衣物护理机箱体内对应检测区域有无衣物的不同情况，回波信号在不同子时长的脉冲数量也不同。基于此本申请实施例提供的方案通过检测回波信号中对应子时长的脉冲数量，以进行衣物检测，以此可以综合不同时间段对回波信号的干扰影响，避免其余时段的干扰信号影响衣物检测结果，进而提升衣物检测的精准度。
进一步地，由于衣物的检测精度有效提升，因此，后续在进行衣物护理时，可以进一步确定衣物护理机内的衣物数量，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，该至少两个子时长包括第一子时长、第二子时长、第三子时长中的至少两个，第二子时长位于第一子时长之后，第三子时长位于第二子时长之后；该开放式超声波收发器在第一子时长检测到的回波信号的数量为第一脉冲数量，在第二子时长检测到的回波信号的数量为第二脉冲数量，在第三子时长检测到的回波信号的数量为第三脉冲数量；该至少一个脉冲数量包括第一脉冲数量、第二脉冲数量、第三脉冲数量中的至少一个。
上述“预设条件”包括：在至少一个脉冲数量包括第一脉冲数量的情况下，第一脉冲数量大于或等于第一阈值；在至少一个脉冲数量包括第二脉冲数量的情况下，第二脉冲数量大于或等于第二阈值；在至少一个脉冲数量包括第三脉冲数量的情况下，第三脉冲数量小于或等于第三阈值。
在一种可能的设计方式中，该至少一个脉冲数量包括第一脉冲数量、第二脉冲数量和第三脉冲数量，该衣物检测方法还包括：
在第一脉冲数量小于第一阈值，第二脉冲数量小于第二阈值，并且第三脉冲数量大于第三阈值的情况下，确定与开放式超声波收发器对应的区域不存在衣物。
在一种可能的设计方式中，该至少一个脉冲数量包括目标脉冲数量和第三脉冲数量，目标脉冲数量包括第一脉冲数量或第二脉冲数量，该衣物检测方法还包括：
在目标脉冲数量包括第一脉冲数量的情况下，若第一脉冲数量小于第四阈值，并且第三脉冲数量大于第三阈值，确定与开放式超声波收发器对应的区域不存在衣物；在目标脉冲数量包括第二脉冲数量的情况下，若第二脉冲数量小 于第五阈值，并且第三脉冲数量大于第三阈值，确定与开放式超声波收发器对应的区域不存在衣物。
在一种可能的设计方式中，该衣物检测方法还包括：
在确定与开放式超声波收发器对应的区域存在衣物的情况下，确定衣物数量为一。
在第二方面，本申请实施例提供了一种衣物检测装置，应用于包括开放式超声波收发器的衣物护理机，具体的，衣物检测装置包括：获取模块，用于获取开放式超声波收发器在预设时长内接收的回波信号(预设时长与衣物护理机的内胆深度成正比)；检测模块，用于确定至少一个脉冲数量，脉冲数量为开放式超声波收发器在一个子时长中检测到的回波信号的数量；确定模块，用于在至少一个脉冲数量满足预设条件的情况下，确定与开放式超声波收发器对应的区域存在衣物。此处，回波信号为开放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，预设时长包括至少两个子时长。
在一种可能的设计方式中，该至少两个子时长包括第一子时长、第二子时长、第三子时长中的至少两个，其中，第二子时长位于第一子时长之后，第三子时长位于第二子时长之后；该开放式超声波收发器在第一子时长检测到的回波信号的数量为第一脉冲数量，在第二子时长检测到的回波信号的数量为第二脉冲数量，在第三子时长检测到的回波信号的数量为第三脉冲数量；该至少一个脉冲数量包括第一脉冲数量、第二脉冲数量、第三脉冲数量中的至少一个；
上述“预设条件”包括：在至少一个脉冲数量包括第一脉冲数量的情况下，第一脉冲数量大于或等于第一阈值；在至少一个脉冲数量包括第二脉冲数量的情况下，第二脉冲数量大于或等于第二阈值；在至少一个脉冲数量包括第三脉冲数量的情况下，第三脉冲数量小于或等于第三阈值。
在一种可能的设计方式中，该至少一个脉冲数量包括第一脉冲数量、第二脉冲数量和第三脉冲数量，该确定模块还用于：
在第一脉冲数量小于第一阈值，第二脉冲数量小于第二阈值，并且第三脉冲数量大于第三阈值的情况下，确定与开放式超声波收发器对应的区域不存在衣物。
在一种可能的设计方式中，该至少一个脉冲数量包括目标脉冲数量和第三脉冲数量，目标脉冲数量包括第一脉冲数量或第二脉冲数量，该确定模块还用于：
在目标脉冲数量包括第一脉冲数量的情况下，若第一脉冲数量小于第四阈值，并且第三脉冲数量大于第三阈值，确定与开放式超声波收发器对应的区域不存在衣物；在目标脉冲数量包括第二脉冲数量的情况下，若第二脉冲数量小于第五阈值，并且第三脉冲数量大于第三阈值，确定与开放式超声波收发器对应的区域不存在衣物。
确定模块还用于：在确定与开放式超声波收发器对应的区域存在衣物的情况下，确定衣物数量为一。
在第三方面，本申请实施例提供了一种衣物护理机，包括：
开放式超声波收发器，存储器以及一个或多个处理器，所述开放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开放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第一方面的衣物检测方法。
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是本申请实施例中的衣物护理机的结构示意图；
图2是本申请实施例中的衣物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是本申请实施例中衣物护理机的衣物检测流程图；
图7是本申请实施例提供的一种衣物检测装置的结构示意图；
图8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。
本申请提供的一种衣物检测方法，旨在通过检测回波信号中至少一个子时长的脉冲数量，基于回波信号在不同子时长中脉冲数量，判断脉冲数量是否满足预设条件，以确定与开放式超声波收发器对应的区域是否存在衣物，进而实现衣物的精准检测。
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，会反射回开放式超声波收发器，这部分信号即为回波信号。本申请实施例通过接收这部分回波信号，利用这部分回波信号在不同时间段的 回波信号数量特征以精准进行对应区域的衣物检测。
本申请实施例提供的衣物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，在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，将衣物挂在衣架12上，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上设置有若干组开放式超声波收发器。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。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。
每一个开放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，以通过开放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检测。
示例性的，开放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，就对应设置一组开放式超声波收发器，以实现开放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，也可以根据衣物检测场景的不同，可以适应性调整开放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开放式超声波收发器均与衣物护理机中的处理器连接。图2示出了每个开放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开放式超声波收发器(如开放式超声波收发器1、开放式超声波收发器2、开放式超声波收发器3)为例，处理器通过端口Tx1-io连接开放式超声波收发器1的发送探头Tx1，处理器通过端口Rx1-io连接开放式超声波收发器1的接收探头Rx1；处理器通过端口Tx2-io连接开放式超声波收发器2的发送探头Tx2，处理器通过端口Rx2-io连接开放式超声波收发器2的接收探头Rx2；处理器通过端口Tx3-io连接开放式超声波收发器3的发送探 头Tx3，处理器通过端口Rx1-io连接开放式超声波收发器3的接收探头Rx3。
在进行衣物检测时，衣物检测装置向对应开放式超声波收发器的发送探头发送脉冲信号，以使该超声波探头向其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开放式超声波收发器对应检测的区域是否有衣物。
下面结合附图1和图2对本申请实施例提供的衣物检测方法进行描述。
图3给出了本申请实施例一提供的一种衣物检测方法的流程图。本实施例中提供的衣物检测方法可以由衣物检测装置执行。该衣物检测装置可以通过软件和/或硬件的方式实现。该衣物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。
下述以衣物检测装置为执行衣物检测方法的主体为例，进行描述。参照图3，该衣物检测方法具体包括：
S110、获取开放式超声波收发器在预设时长内接收的回波信号。
回波信号为开放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。预设时长与衣物护理机的内胆深度成正比。
在进行衣物检测时，衣物检测装置根据当前需要检测的区域，发送脉冲信号至该区域对应设置的开放式超声波收发器的发送探头，以使发送探头在当前需要检测的区域发射超声波信号。
超声波信号在该区域传播时，遇到障碍物会反射回波信号至该开放式超声波收发器，进而通过开放式超声波收发器的接收探头接收这部分回波信号。衣物检测装置通过获取这部分超声波信号的回波信号，即可进一步进行分析处理确定当前检测区域是否存在衣物。
具体的，如图4所示，在开放式超声波收发器对应检测区域的衣架12挂有衣物13的场景中，开放式超声波收发器的发送探头111发射的超声波信号，在传播途中遇到衣物13时，会反射回波信号至开放式超声波收发器处，通过接收探头112接收这部分回波信号。
如图5所示，在开放式超声波收发器对应检测区域的衣架12没有悬挂衣物的场景中，开放式超声波收发器的发送探头111发射的超声波信号，会在到达衣物护理机内胆的壁面后反射回波信号至开放式超声波收发器处，通过接收探头112接收这部分回波信号。
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，开放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。
基于此原理，本申请实施例通过获取这部分回波信号以进行分析处理，进而即可根据回波信号的不同信号特征确定当前开放式超声波收发器的检测区域是否存在衣物。
需要说明的是，一般而言，开放式超声波收发器发出超声波信号后，遇到衣物反射的回波信号，会先到达开放式超声波收发器的接收探头。而对于超声波信号到达内胆壁面返回的回波信号，其返回时间相对较长。因此为了完整获取超声波信号的回波信号进行有效的衣物检测，则需要根据箱体内胆的深度设置回波信号的预设时长。后续在衣物检测装置在获取接收探头接收的回波信号时，根据该预设时长进行回波信号提取。
其中，该预设时长需要与衣物护理机的内胆深度成正比。
可以理解的是，内胆深度越长，则内胆壁面反射的回波信号被接收探头接收的时间就越晚。为了完整获取内胆壁面返回的回波信号，则需要根据箱体内胆深度预设时长，以确保在预设时长内，接收探头可以完整接收衣物护理机内胆壁面返回的回波信号，优化回波信号检测效果。
可选的，本申请实施例采用开放式超声波收发器作为超声波信号的发送和其回波信号的接收设备。开放式超声波收发器具有发送波形收敛，角度小，余震小以及射程远的特点，可以有效避免不必要的信号干扰，实现超声波信号精准的定点探测。
由于衣物护理机内可能设置多个衣架，不同衣架需要设置不同的开放式超声波收发器，以实现对应区域的衣物检测。为了减少不同检测区域直接的信号干扰，采用开放式超声波收发器，利用其发送波形收敛，角度小，余震小以及射程远的特点，使其发送的超声波信号的发射方向集中，减少检测区域以外的回波信号产生，进而减少回波信号的接收干扰，优化衣物检效果。
可选的，在获取开放式超声波收发器在预设时长内接收的回波信号之前，衣物检测装置通过发送设定数量、设定频率的脉冲信号至发送探头，以使发送探头向对应的检测通道发送超声波信号。根据实际的衣物检测需求，可以适应 性设置脉冲信号发送的设定数量和设定频率。
示例性的，本申请在进行衣物检测时，通过衣物检测装置往发送探头发送8个40KHz的脉冲信号，进而使之产生超声波信号。8个40KHz的脉冲信号为根据实际测验效果确定的脉冲信号发送的设定数量和设定频率。基于此输出的脉冲信号，其对应接收到的回波信号效果较佳，以此可以进一步提升衣物检测的准确度。
S120、确定至少一个脉冲数量，脉冲数量为开放式超声波收发器在一个子时长中检测到的回波信号的数量，预设时长包括至少两个子时长。
超声波信号传输过程中，有一部分信号在短时间内会从发送探头直接到接收探头，这部分信号没有经过广义的传播介质(如衣物处理机中的空气)，而是通过开放式超声波收发器的硬件结构或者电路走线进行传导。这部分信号一般称为余震信号。以本申请实施例的衣物护理机为例，余震信号一般会集中出现在超声波信号发出后的0.5ms内。根据开放式超声波收发器具体硬件结构和电路走线设计的不同，可以适应性实验检测确定这部分信号。由于余震信号会影响衣物发射及箱体内胆壁面反射的回波信号的检测分析，因此针对预设时长内获取到的回波信号，衣物检测装置可以根据余震信号所对应的接收时段，从预设时长内的回波信号中，排除这部分信号的分析处理。
同样的，在检测区域没有存在衣物的情况下，对应超声波信号传输过程中，其遇到箱体内胆反射回来的回波信号，也会在预设时长中的对应子时长返回到开放式超声波收发器处。根据实际测验，其回波信号在时间轴上同样呈现一种规律性的变化。即在该子时长对应分段的回波信号中，脉冲数量呈一定的规律性。
基于上述原理，本申请实施例提供的衣物检测方法通过确定预设时长的各个子时长中的脉冲数量，根据脉冲数量进行衣物检测。
可以理解的是，根据信号反射的时间顺序，余震信号、衣物反射回来的回波信号或者没有衣物情况下箱体内胆反射回来的回波信号会先后在不同的时段达到开放式超声波收发器。即根据开放式超声波收发器对应检测区域是否放置衣物两种情况，回波信号会在相应的时段达到超声波收发器。因此，本申请实施例根据衣物反射回来的回波信号所对应的时间段，以及箱体内胆反射回来的回波信号，在预设时长中确定对应的至少两个子时长，该至少两个子时长的回波信号即为余震信号，以及衣物反射回来的回波信号或者箱体内胆反射回来的 回波信号，通过统计该至少两个子时长中回波信号的脉冲数量，即可作为数据基础，判断该开放式超声波收发器对应区域是否存在衣物。
本实施例中的至少两个子时长包括第一子时长、第二子时长、第三子时长中的至少两个。第二子时长位于第一子时长之后，第三子时长位于第二子时长之后。开放式超声波收发器在第一子时长检测到的回波信号的数量为第一脉冲数量，在第二子时长检测到的回波信号的数量为第二脉冲数量，在第三子时长检测到的回波信号的数量为第三脉冲数量。该至少一个脉冲数量包括第一脉冲数量、第二脉冲数量、第三脉冲数量中的至少一个。
第一子时长、第二子时长和第三子时长的时间长度可以相同，也可以不同，具体根据实际衣物检测场景设定，本申请实施例对子时长的时间长度不做固定限制，在此不多赘述。
S130、在至少一个脉冲数量满足预设条件的情况下，确定与开放式超声波收发器对应的区域存在衣物。
在确定出至少一个脉冲数量后，判断该至少一个脉冲数量是否满足预设条件，在确定对应脉冲数量满足预设条件时，即可确定与开放式超声波收发器对应的区域存在衣物。具体地，本申请实施例通过将脉冲数量与相应阈值的大小关系作为预设条件，根据确定出的大小关系确定出开放式超声波收发器对应的区域是否存在衣物。
实际应用中，可以根据实际测验，确定对应区域存在衣物以及不存在衣物两种情况下，各个子时长的脉冲数量分布范围，以此设定对应各个子时长的脉冲数量的阈值，即可在后续基于脉冲数量进行衣物检测时，通过阈值比对以判断开放式超声波收发器对应的区域是否存在衣物。
上述第一时长和第二子时长对应衣物反射回波信号的时间段设定，这部分回波信号的形成是由于超生波信号在衣服间、衣服和侧边之间的相互反弹形成的。基于这部分回波信号的脉冲数量变化规律，将第一子时长检测到的第一脉冲数量和/或第二子时长检测到的脉冲数量比对相应阈值，即可判断超声波收发器是否放置衣物。
此外，第三子时长对应箱体内胆反射回波信号的时间段设定，由于超声波收发器对应区域放置衣物时，箱体内反射回来的回波信号遇到衣物阻碍而造成多次反弹或者信号吸收，使得对应区域放置衣物和没有放置衣物时，其反射回来的回波信号的脉冲数量不同。基于这部分回波信号的脉冲数量，将第三子时 长检测到的脉冲数量比对相应阈值，以此进行衣物检测。
需要说明的是，根据实际测验结果，可以依据回波信号脉冲数量变化的不同规律性，预设相应的子时长以及对应脉冲数量的阈值。
可选的，本申请实施例根据至少一个脉冲数量与相应阈值的大小关系确定衣物数量。其中，对应预设时长获取的回波信号，将其按照第一子时长、第二子时长和第三子时长分成三段，分别统计各个子时长的脉冲数量，进而根据脉冲数量比对相应阈值进行衣物检测。
具体的，该预设条件包括：在至少一个脉冲数量包括第一脉冲数量的情况下，第一脉冲数量大于或等于第一阈值；或者包括在至少一个脉冲数量包括第二脉冲数量的情况下，第二脉冲数量大于或等于第二阈值；或者包括在至少一个脉冲数量包括第三脉冲数量的情况下，第三脉冲数量小于或等于第三阈值。
即在至少一个脉冲数量包括第一脉冲数量的情况下，若第一脉冲数量大于或等于第一阈值，确定与开放式超声波收发器对应的区域存在衣物。在至少一个脉冲数量包括第二脉冲数量的情况下，若第二脉冲数量大于或等于第二阈值，确定与开放式超声波收发器对应的区域存在衣物。在至少一个脉冲数量包括第三脉冲数量的情况下，若第三脉冲数量小于或等于第三阈值，确定与开放式超声波收发器对应的区域存在衣物。
示例性的，如图6所示，衣物检测装置在超声波收发器的发送探头发送的最后一个脉冲信号开始算起，确定接收探头4毫秒内接收到的回波信号。进而以1毫秒时间间隔将这部分回波信号划分成4段，记作t1、t2、t3和t4。其中，由于t1时段的回波信号主要包含了余震信号，则在进行衣物检测时，将这部分信号排除，只提取t2、t3和t4部分的至少一段回波信号进行衣物检测。可以理解的是，余震信号和不存在衣物情况下内胆壁面反射的回波信号分别在t1和t4时间段形接收到，箱体内放置不同数量的衣服时，t2、t3时间段内回波信号也会出现规律性变化的波形，这种波形的形成是由于超生波信号在衣服间、衣服和侧边之间的相互反弹形成的。则通过统计t2、t3和t4部分回波信号的脉冲数量，记为n2、n3和n4,进一步将脉冲数量n2、n3和n4中的至少一个与相应阈值比对，得到衣物检测结果。
示例性的，参照图6，本申请实施例根据实际测验中，对应区域存在衣物情况下，第一子时长和第二子时长回波信号的脉冲数量变化规律，以及对应区域不存在衣物情况下，第三子时长回波信号的脉冲数量变化规律，第一阈值为 25，第二阈值为12，第三阈值为2。
其中，在t2时间段n2大于或等于25个脉冲个数，或者t3时间段n3大于或等于12个脉冲个数，或者t4时间段n4小于或等于2个脉冲个数，即n2≥25或n3≥12或n4≤2时，判断当前超声波收发器对应区域存在衣服。
在如图3所示的衣物检测方法的基础上，进一步地，在该至少一个脉冲数量包括该第一脉冲数量、该第二脉冲数量和该第三脉冲数量时，衣物检测装置在该第一脉冲数量小于该第一阈值，该第二脉冲数量小于该第二阈值，并且该第三脉冲数量大于该第三阈值的情况下，确定与该开放式超声波收发器对应的区域不存在衣物。
另一方面，在该至少一个脉冲数量包括目标脉冲数量和该第三脉冲数量，该目标脉冲数量包括该第一脉冲数量或该第二脉冲数量时，衣物检测装置在述目标脉冲数量包括该第一脉冲数量的情况下，若该第一脉冲数量小于第四阈值，并且该第三脉冲数量大于该第三阈值，确定与该开放式超声波收发器对应的区域不存在衣物。在该目标脉冲数量包括该第二脉冲数量的情况下，若该第二脉冲数量小于第五阈值，并且该第三脉冲数量大于该第三阈值，确定与该开放式超声波收发器对应的区域不存在衣物。
示例性的，如图6所示，第四阈值为2，第五阈值为2，在t2时间段n2小于25个脉冲个数，t3时间段n3小于2个脉冲个数，且t4时间段n4大于2个脉冲个数时，即n2<25，n3<12且n4>2时，判断当前超声波收发器对应区域不存在衣服。
另一方面，在t2时间段n2小于或等于2个脉冲个数，且t4时间段n4大于2个脉冲个数时，或者在t3时间段n3小于或等于2个脉冲个数，且t4时间段n4大于2个脉冲个数时，即n2<25或n3<12，且n4>2时，判断当前超声波收发器对应区域不存在衣服。
由于衣物干湿状态下，其反射回波信号的脉冲数量变化规律不同，因此，本申请实施例根据不同干湿状态衣物在第一子时长和第二子时长回波信号的脉冲数量变化规律，设置第一阈值，第二阈值、第三阈值、第四阈值和第五阈值，以分别对应衣物干、湿两种状态进行衣物检测，实现更精准的衣物检测效果。
最终，基于上述判断流程，即可最终确定您当前超声波收发器对应区域是否存在衣服。需要说明的是，实际衣物判断场景中，根据回波信号脉冲数量的实际变化规律性，可以适应性设定相应数量的子时长和阈值，并选择相应额定 判断流程进行衣物检测。本申请实施例对基于脉冲数量进行衣物检测的具体检测比对流程不做固定限制，在此不多赘述。
在如图3所示的衣物检测流程的基础上，可选地，衣物检测装置在确定与开放式超声波收发器对应的区域存在衣物的情况下，确定衣物数量为一。通过在确定开放式超声波收发器对应的区域的衣物检测结果后，输出该检测区域的衣物数量，以此可便于统计衣物护理机中的衣物数量。
由于在确定与开放式超声波收发器对应的区域存在衣物的情况下，该区域的衣物数量为1。则衣物检测装置通过统计各个开放式超声波收发器的对应区域的衣物检测结果，基于衣物检测结果可以确定衣物护理机内的衣物数量。
可以理解的是，本申请实施例对应衣物护理机内各个用于悬挂衣物的衣架设置了超声波收发器，以使衣物检测装置基于各个超声波收发器，对应衣物放置区域进行超声波信号检测，进而基于回波信号判断各个检测区域(即各个衣架)是否存在衣物。通过统计各个衣架的衣物检测结果，即可确定当前衣物衣物护理机的衣物数量，进而适应性调整衣物护理机的运行时长。
例如，衣物护理机设置三个衣架，则基于上述衣物检测方法判断三个衣架是否存在衣物，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。
在一个实施例中，衣物检测装置还可以预先配置各个开放式超声波收发器的超声波信号发送时序，控制各个开放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。在衣物护理机设置多个超声波收发器进行多个检测区域的衣物检测时，为了避免超声波收发器并行进行超声波信号检测的情况下，各个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包含了其他检测区域反射的信号，干扰当前检测区域的衣物检测。
基于此，在进行衣物检测时，通过预先设置各个开放式超声波收发器的超声波信号发送时序，使得各个开放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，各个开放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，设定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，进一步提升衣物检测精度，优化衣物检测效果。
综上描述可知，通过获取开放式超声波收发器在预设时长内接收的回波信号，回波信号为开放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；预设时长与衣物护理机的内胆深度成正比；确定至少一个脉冲数量，脉冲数量为开放式超声波收发器在一个子时长中检测到的回波信号的数量，预设时长包括至少两个子时长；在至少一个脉冲数量满足预设条件的情况下，确定与开放式超声波收发器对应的区域存在衣物。采用上述技术手段，通过在回波信号中检测至少一个子时长的脉冲数量，判断脉冲数量是否满足预设条件，以确定与开放式超声波收发器对应的区域是否存在衣物，以此可以避免其余时段的干扰信号影响衣物检测结果，进而提升衣物检测的精准度。进一步地，本申请通过精准确定衣物护理机的衣物数量，可以使衣物护理机准确调整运行时长，优化设备运行能效和使用体验。
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检测装置(该衣物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7为本申请提供的一种衣物检测装置的结构示意图。参考图7，本实施例提供的衣物检测装置具体包括：获取模块21、检测模块22和确定模块23。
其中，获取模块21用于获取开放式超声波收发器在预设时长内接收的回波信号，回波信号为开放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；预设时长与衣物护理机的内胆深度成正比。
检测模块22用于确定至少一个脉冲数量，脉冲数量为开放式超声波收发器在一个子时长中检测到的回波信号的数量，预设时长包括至少两个子时长。
确定模块23用于在至少一个脉冲数量满足预设条件的情况下，确定与开放式超声波收发器对应的区域存在衣物。
可选地，该至少两个子时长包括第一子时长、第二子时长、第三子时长中的至少两个，第二子时长位于第一子时长之后，第三子时长位于第二子时长之后；开放式超声波收发器在第一子时长检测到的回波信号的数量为第一脉冲数量，在第二子时长检测到的回波信号的数量为第二脉冲数量，在第三子时长检测到的回波信号的数量为第三脉冲数量；该至少一个脉冲数量包括第一脉冲数量、第二脉冲数量、第三脉冲数量中的至少一个。
相应的，预设条件包括：在至少一个脉冲数量包括第一脉冲数量的情况下，第一脉冲数量大于或等于第一阈值；在至少一个脉冲数量包括第二脉冲数量的情况下，第二脉冲数量大于或等于第二阈值；在至少一个脉冲数量包括第三脉冲数量的情况下，第三脉冲数量小于或等于第三阈值。
可选地，上述至少一个脉冲数量包括第一脉冲数量、第二脉冲数量和第三脉冲数量。相应的，上述确定模块23还用于：
在第一脉冲数量小于第一阈值，第二脉冲数量小于第二阈值，并且第三脉冲数量大于第三阈值的情况下，确定与开放式超声波收发器对应的区域不存在衣物。
可选地，上述至少一个脉冲数量包括目标脉冲数量和第三脉冲数量，目标脉冲数量包括第一脉冲数量或第二脉冲数量。相应的，确定模块23还用于：
在目标脉冲数量包括第一脉冲数量的情况下，若第一脉冲数量小于第四阈值，并且第三脉冲数量大于第三阈值，确定与开放式超声波收发器对应的区域不存在衣物；
在目标脉冲数量包括第二脉冲数量的情况下，若第二脉冲数量小于第五阈 值，并且第三脉冲数量大于第三阈值，确定与开放式超声波收发器对应的区域不存在衣物。
可选地，确定模块23还用于：在确定与开放式超声波收发器对应的区域存在衣物的情况下，确定衣物数量为一。
上述，通过获取开放式超声波收发器在预设时长内接收的回波信号，回波信号为开放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；预设时长与衣物护理机的内胆深度成正比；确定至少一个脉冲数量，脉冲数量为开放式超声波收发器在一个子时长中检测到的回波信号的数量，预设时长包括至少两个子时长；在至少一个脉冲数量满足预设条件的情况下，确定与开放式超声波收发器对应的区域存在衣物。采用上述技术手段，通过在回波信号中检测至少一个子时长的脉冲数量，通过判断脉冲数量是否满足预设条件，以确定与开放式超声波收发器对应的区域是否存在衣物，以此可以避免其余时段的干扰信号影响衣物检测结果，进而提升衣物检测的精准度。
并且，本申请通过精准确定衣物护理机的衣物数量，可以使衣物护理机准确调整运行时长，优化设备运行能效和使用体验。
本申请实施例提供的衣物检测装置可以用于执行上述实施例提供的衣物检测方法，具备相应的功能和有益效果。
在上述实施例的基础上，本申请还提供了一种衣物护理机，参照图8，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及输出装置35和开放式超声波收发器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。该衣物护理机的开放式超声波收发器、处理器、存储器、通信模块、输入装置及输出装置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所述的衣物检测方法对应的程序指令/模块(例如，衣物检测装置中的获取模块、检测模块和确定模块)。
存储器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，开放式超声波收发器36用于发送超声波信号并接收回波信号。
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一提供的衣物检测方法，具备相应的功能和有益效果。
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的衣物检测方法。
上述实施例中提供的衣物检测装置、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 (12)

  1. 一种衣物检测方法，其特征在于，应用于包括开放式超声波收发器的衣物护理机，所述衣物检测方法包括：
    获取所述开放式超声波收发器在预设时长内接收的回波信号，所述回波信号为所述开放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；所述预设时长与所述衣物护理机的内胆深度成正比；
    确定至少一个脉冲数量，所述脉冲数量为所述开放式超声波收发器在一个子时长中检测到的回波信号的数量，所述预设时长包括至少两个子时长；
    在所述至少一个脉冲数量满足预设条件的情况下，确定与所述开放式超声波收发器对应的区域存在衣物。
  2. 根据权利要求1所述的衣物检测方法，其特征在于，所述至少两个子时长包括第一子时长、第二子时长、第三子时长中的至少两个，所述第二子时长位于所述第一子时长之后，所述第三子时长位于所述第二子时长之后；所述开放式超声波收发器在所述第一子时长检测到的回波信号的数量为第一脉冲数量，在所述第二子时长检测到的回波信号的数量为第二脉冲数量，在所述第三子时长检测到的回波信号的数量为第三脉冲数量；
    所述至少一个脉冲数量包括所述第一脉冲数量、所述第二脉冲数量、所述第三脉冲数量中的至少一个；
    所述预设条件包括：在所述至少一个脉冲数量包括所述第一脉冲数量的情况下，所述第一脉冲数量大于或等于第一阈值；或者包括在所述至少一个脉冲数量包括所述第二脉冲数量的情况下，所述第二脉冲数量大于或等于第二阈值；或者包括在所述至少一个脉冲数量包括所述第三脉冲数量的情况下，所述第三脉冲数量小于或等于第三阈值。
  3. 根据权利要求2所述的衣物检测方法，其特征在于，所述至少一个脉冲数量包括所述第一脉冲数量、所述第二脉冲数量和所述第三脉冲数量，所述衣物检测方法还包括：
    在所述第一脉冲数量小于所述第一阈值，所述第二脉冲数量小于所述第二阈值，并且所述第三脉冲数量大于所述第三阈值的情况下，确定与所述开放式超声波收发器对应的区域不存在衣物。
  4. 根据权利要求2所述的衣物检测方法，其特征在于，所述至少一个脉冲数量包括目标脉冲数量和所述第三脉冲数量，所述目标脉冲数量包括所述第一脉冲数量或所述第二脉冲数量，所述衣物检测方法还包括：
    在所述目标脉冲数量包括所述第一脉冲数量的情况下，若所述第一脉冲数量小于第四阈值，并且所述第三脉冲数量大于所述第三阈值，确定与所述开放式超声波收发器对应的区域不存在衣物；
    在所述目标脉冲数量包括所述第二脉冲数量的情况下，若所述第二脉冲数量小于第五阈值，并且所述第三脉冲数量大于所述第三阈值，确定与所述开放式超声波收发器对应的区域不存在衣物。
  5. 根据权利要求1-4中任意一项所述的衣物检测方法，其特征在于，所述衣物检测方法还包括：
    在确定与所述开放式超声波收发器对应的区域存在衣物的情况下，确定衣物数量为一。
  6. 一种衣物检测装置，其特征在于，应用于包括开放式超声波收发器的衣物护理机，所述衣物检测装置包括：
    获取模块，用于获取所述开放式超声波收发器在预设时长内接收的回波信号，所述回波信号为所述开放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；所述预设时长与所述衣物护理机的内胆深度成正比；
    检测模块，用于确定至少一个脉冲数量，所述脉冲数量为所述开放式超声波收发器在一个子时长中检测到的回波信号的数量，所述预设时长包括至少两个子时长；
    确定模块，用于在至少一个脉冲数量满足预设条件的情况下，确定与开放式超声波收发器对应的区域存在衣物。
  7. 根据权利要求6所述的衣物检测装置，其特征在于，所述至少两个子时长包括第一子时长、第二子时长、第三子时长中的至少两个，所述第二子时长位于所述第一子时长之后，所述第三子时长位于所述第二子时长之后；所述开放式超声波收发器在所述第一子时长检测到的回波信号的数量为第一脉冲数量，在所述第二子时长检测到的回波信号的数量为第二脉冲数量，在所述第三子时长检测到的回波信号的数量为第三脉冲数量；
    所述至少一个脉冲数量包括所述第一脉冲数量、所述第二脉冲数量、所述第三脉冲数量中的至少一个；
    所述预设条件包括：在所述至少一个脉冲数量包括所述第一脉冲数量的情况下，所述第一脉冲数量大于或等于第一阈值；或者包括在所述至少一个脉冲数量包括所述第二脉冲数量的情况下，所述第二脉冲数量大于或等于第二阈值； 或者包括在所述至少一个脉冲数量包括所述第三脉冲数量的情况下，所述第三脉冲数量小于或等于第三阈值。
  8. 根据权利要求7所述的衣物检测装置，其特征在于，所述至少一个脉冲数量包括所述第一脉冲数量、所述第二脉冲数量和所述第三脉冲数量，所述确定模块还用于：
    在所述第一脉冲数量小于所述第一阈值，所述第二脉冲数量小于所述第二阈值，并且所述第三脉冲数量大于所述第三阈值的情况下，确定与所述开放式超声波收发器对应的区域不存在衣物。
  9. 根据权利要求7所述的衣物检测装置，其特征在于，所述至少一个脉冲数量包括目标脉冲数量和所述第三脉冲数量，所述目标脉冲数量包括所述第一脉冲数量或所述第二脉冲数量，所述确定模块还用于：
    在所述目标脉冲数量包括所述第一脉冲数量的情况下，若所述第一脉冲数量小于第四阈值，并且所述第三脉冲数量大于所述第三阈值，确定与所述开放式超声波收发器对应的区域不存在衣物；
    在所述目标脉冲数量包括所述第二脉冲数量的情况下，若所述第二脉冲数量小于第五阈值，并且所述第三脉冲数量大于所述第三阈值，确定与所述开放式超声波收发器对应的区域不存在衣物。
  10. 根据权利要求6-9任一所述的衣物检测装置，其特征在于，所述确定模块还用于：
    在确定与所述开放式超声波收发器对应的区域存在衣物的情况下，确定衣物数量为一。
  11. 一种衣物护理机，其特征在于，包括：
    开放式超声波收发器，存储器以及一个或多个处理器，所述开放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开放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1-5任一所述的衣物检测方法。
  12. 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1-5任一所述的衣物检测方法。
PCT/CN2021/138571 2021-11-16 2021-12-15 一种衣物检测方法、装置、衣物护理机及存储介质 WO2023087466A1 (zh)

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