CN116516614B - Drive protection circuit, method, device, medium and laundry treatment apparatus - Google Patents
Drive protection circuit, method, device, medium and laundry treatment apparatusInfo
- Publication number
- CN116516614B CN116516614B CN202211720102.1A CN202211720102A CN116516614B CN 116516614 B CN116516614 B CN 116516614B CN 202211720102 A CN202211720102 A CN 202211720102A CN 116516614 B CN116516614 B CN 116516614B
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- Prior art keywords
- feedback signal
- driving
- light
- drive
- emitting elements
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Classifications
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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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/08—Control circuits or arrangements thereof
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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
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
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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
- D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
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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
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
本公开涉及驱动保护电路、方法、装置、介质和衣物处理设备，该驱动保护电路包括：并联设置的至少两路发光元件；驱动元件，与所述至少两路发光元件连接，用于向所述发光元件提供驱动电流；检测元件，用于检测所述至少两路发光元件的工作状态，得到反馈信号；控制元件，用于基于所述反馈信号调节所述驱动电流，以使所述发光元件工作在参考电流范围内。由此能够对至少两路发光元件的工作状态进行检测，并针对得到的反馈信号对驱动电流进行调节，使驱动电流与工作状态相适应，发光元件均工作在参考电流范围内，从而实现对发光元件的驱动保护，有利于确保发光元件的可靠性和寿命。
This disclosure relates to a drive protection circuit, method, apparatus, medium, and garment handling equipment. The drive protection circuit includes: at least two light-emitting elements arranged in parallel; a drive element connected to the at least two light-emitting elements for providing drive current to the light-emitting elements; a detection element for detecting the operating state of the at least two light-emitting elements and obtaining a feedback signal; and a control element for adjusting the drive current based on the feedback signal to ensure that the light-emitting elements operate within a reference current range. This allows for the detection of the operating state of at least two light-emitting elements and the adjustment of the drive current based on the obtained feedback signal, ensuring that the drive current adapts to the operating state and that all light-emitting elements operate within the reference current range. This achieves drive protection for the light-emitting elements, which helps ensure the reliability and lifespan of the light-emitting elements.
Description
Technical Field
The present disclosure relates to the field of electronic control technology, and in particular, to a drive protection circuit, a method, a device, a medium, and a laundry treatment apparatus.
Background
In the conventional clothes treatment apparatus, when information is presented by using light emitting elements, a structure in which several paths of light emitting elements are driven in parallel is generally used.
The light emitting element is usually driven with a preset fixed current. Therefore, when one of the light-emitting elements is damaged, the rest of the light-emitting elements need to bear larger current, so that the reliability and the service life of the light-emitting elements are reduced.
Disclosure of Invention
In order to solve the technical problems described above, or at least partially solve the technical problems described above, the present disclosure provides a drive protection circuit, a method, an apparatus, a medium, and a laundry treatment apparatus.
The present disclosure provides a drive protection circuit, comprising:
at least two paths of light-emitting elements arranged in parallel;
A driving element connected with the at least two paths of light emitting elements and used for providing driving current for the light emitting elements;
The detection element is used for detecting the working states of the at least two paths of light-emitting elements to obtain feedback signals;
And the control element is used for adjusting the driving current based on the feedback signal so as to enable the light-emitting element to work in a reference current range.
Optionally, the driving protection circuit further includes a driving chip, and the control element, the driving element and the detection element are all disposed in the driving chip;
The first end and the second end of the driving chip are connected with the at least two paths of light-emitting elements and are used for outputting the driving current or collecting the feedback signal, wherein the time for outputting the driving current is staggered with the time for collecting the feedback signal.
Optionally, the driving chip is a constant current driving chip, and the feedback signal is a voltage.
The disclosure also provides a driving protection method, and the driving protection circuit applying any one of the above methods, the method includes:
the feedback signal is obtained by detecting the working state of the light-emitting element by the detecting element;
the drive current is adjusted based on the feedback signal to operate the light emitting element within a reference current range.
Optionally, in the drive protection circuit of the common port of the feedback signal and the drive current, the acquiring the feedback signal includes:
Providing the driving current by using the common port at a first preset time, and collecting the feedback signal by using the common port at a second preset time;
The first preset time and the second preset time are staggered, and the first preset time is longer than the second preset time.
Optionally, the light emitting element is periodically driven at a preset frequency;
the second time includes a preset number of cycles;
the first time includes a period.
Optionally, the drive protection method further includes:
When the at least two paths of light-emitting elements are in a reference working state, acquiring a reference feedback signal and recording a reference driving current;
The adjusting the drive current based on the feedback signal includes:
Determining the working states of the at least two paths of light-emitting elements based on the reference feedback signal and the feedback signal;
Updating the drive current based on the operating state and the reference drive current.
The present disclosure also provides a drive protection device applied to any one of the above drive protection circuits, the device comprising:
the acquisition module is used for acquiring a feedback signal, wherein the feedback signal is obtained by detecting the working state of the light-emitting element by the detection element;
And the adjusting module is used for adjusting the driving current based on the feedback signal so as to enable the light-emitting element to work in a reference current range.
The present disclosure also provides a computer readable storage medium having stored thereon a computer program for execution by a processor to perform the steps of any of the methods described above.
The present disclosure also provides a laundry treatment apparatus including any one of the above-described drive protection circuits.
Compared with the prior art, the technical scheme provided by the disclosure has the following advantages:
In the drive protection circuit, the control element, the driving element and the detection element are arranged, specifically, the driving element is connected with at least two paths of light-emitting elements and can provide driving current for the light-emitting elements, the detection element can detect working states of the at least two paths of light-emitting elements to obtain feedback signals, the control element can adjust the driving current based on the feedback signals so that the light-emitting elements work in a reference current range, and therefore the working states of the at least two paths of light-emitting elements can be detected, the driving current can be adjusted according to the feedback signals, the driving current is matched with the working states, and the light-emitting elements work in the reference current range, so that the drive protection of the light-emitting elements is realized, and the reliability and the service life of the light-emitting elements are guaranteed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a driving protection circuit according to an embodiment of the disclosure;
fig. 2 is a schematic structural diagram of another driving protection circuit according to an embodiment of the disclosure;
fig. 3 is a schematic structural diagram of a driving protection circuit according to another embodiment of the disclosure;
Fig. 4 is a schematic structural diagram of a driving protection circuit according to another embodiment of the present disclosure;
fig. 5 is a schematic flow chart of a driving protection method according to an embodiment of the disclosure;
fig. 6 is a schematic structural diagram of a driving protection device according to an embodiment of the disclosure.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein, and it is apparent that the embodiments in the specification are only some, rather than all, of the embodiments of the present disclosure.
In the related art, a structure related to display in a laundry treating apparatus sometimes takes the form of a parallel driving of several light emitting elements (e.g., beads). The structure of parallel driving of two lamp beads is taken as an example, constant current driving or constant voltage driving can be adopted, and the constant current driving is taken as an example, 20mA current driving can be adopted in a normal state, and each lamp bead bears 10mA current. However, when one of the beads is damaged to cause disconnection, the other bead receives a current of 20mA, so that the reliability and the service life of the bead are greatly reduced, which affects the reliability of the whole display panel in the clothes treatment equipment.
According to the technical scheme, the working states of at least two paths of light-emitting elements can be detected by arranging the detection element and the driving element, and driving current is adjusted according to the obtained feedback signals, so that the driving current is adapted to the working states, the light-emitting elements all work in a reference current range, driving protection of the light-emitting elements is achieved, reliability and service life of the light-emitting elements are guaranteed, and reliability of the whole display board in the clothes treatment equipment is guaranteed.
In some embodiments, the control element, the detection element, and the driving element may be provided in the same driving chip, and the detection element and the driving element may share an input-output port (simply referred to as an "IO port") of the driving chip, whereby the circuit configuration can be simplified.
The light-emitting element can be driven according to a preset frequency period, the IO port is used for collecting feedback signals in one period of preset time, and the IO port is used for outputting driving current in the preset time, so that the feedback signals are collected, and meanwhile, the light-emitting element is prevented from being excessively influenced in normal light emission, and the light-emitting element is ensured to be capable of normally emitting light.
In some embodiments, the feedback signal may be an electrical signal, such as a voltage drop when constant current drive is employed.
In combination with the above, for the structure of parallel driving of two lamp beads, when providing drive current, the IO port multiplexes into the detection port in one of them cycle, is used for detecting the voltage at lamp bead both ends. Because the voltage drops of the diodes corresponding to 10mA and 20mA are different, if the voltage drop corresponding to 20mA is detected to change, the lamp is indicated to be disconnected, and the IO port is controlled to only output 10mA in a constant current mode at the moment, so that the reliability of the lamp bead and the whole display panel is ensured.
By way of example, the beads may be patch beads, may be light emitting diodes (LIGHT EMITTING Diode, LED), and are not limited herein.
The driving protection circuit, the driving protection method, the driving protection device, the driving protection medium, and the driving protection medium according to the embodiments of the present disclosure are exemplarily described with reference to the accompanying drawings.
Fig. 1 is a schematic diagram illustrating a structure of a driving protection circuit according to an embodiment of the disclosure. Referring to fig. 1, the driving protection circuit 10 includes at least two light emitting elements 120 arranged in parallel, a driving element 110 connected to the at least two light emitting elements 120 for providing a driving current to the light emitting elements 120, a detecting element 130 for detecting an operation state of the at least two light emitting elements 120 to obtain a feedback signal, and a control element 140 for adjusting the driving current based on the feedback signal so that the light emitting elements 120 operate within a reference current range.
In the embodiment of the disclosure, the light emitting element 120 is an element for emitting light, which may be a lamp bead, specifically may be an LED lamp bead. By way of example, three parallel light emitting elements 120 are shown in fig. 1. In other embodiments, the light emitting elements 120 arranged in parallel may be two-way, four-way, or other number of multiple ways, which is not limited herein. Each light emitting element 120 may include a single bead, two beads connected in series, or a plurality of beads connected in series or parallel in other manners, which is not limited herein.
In the embodiment of the present disclosure, the driving chip 110 is capable of supplying a driving current to all the light emitting elements 120. For example, a constant current driven current may be provided.
In the embodiment of the disclosure, the detecting element 130 can detect the working state of the light emitting element 120, and obtain a corresponding feedback signal. The detecting element 130 may detect a voltage during constant current driving, or may detect an overall or respective luminance signal of the light emitting element 120 to determine an operation state of the light emitting element 120, so as to implement feedback driving adjustment of the light emitting element 120. For example, when the detecting element 130 is used to detect the voltage of the light emitting element 120, at least two paths of light emitting elements 120 as a detected whole, the detecting elements may be connected in parallel to both ends of the whole to achieve voltage detection.
Based on this, the control element 140 can match the corresponding driving current based on the feedback signal to realize adjustment of the driving current, so that the adjusted driving current is adapted to the operating state of the light emitting element 120, so that the light emitting element operates 120 within the reference current range. When the light emitting element 120 operates in the reference current range, the reliability is high and the lifetime is long.
The operating states of the light emitting elements 120 may include normal operation and open circuit, and the adjusted driving current matches the number of the light emitting elements 120 in the normal operation state.
In the driving protection circuit 10 provided by the present disclosure, by setting the control element 140, the driving element 110 and the detecting element 130, the working states of at least two paths of light emitting elements 120 can be detected, and the driving current is adjusted according to the obtained feedback signal, so that the driving current is adapted to the working states, and the light emitting elements 120 all work in the reference current range, thereby realizing the driving protection of the light emitting elements 120, and being beneficial to ensuring the reliability and the service life of the light emitting elements 120.
In some embodiments, fig. 2 is a schematic structural diagram of another driving protection circuit according to an embodiment of the disclosure. On the basis of fig. 1, referring to fig. 2, the driving protection circuit 10 further includes a driving chip 100, a control element 140, a driving element 110 and a detecting element 130 are all disposed in the driving chip 100, and a first end and a second end of the driving chip 100 are connected with at least two paths of light emitting elements 120 for outputting driving currents or for collecting feedback signals, wherein the time for outputting the driving currents is staggered from the time for collecting the feedback signals.
In the embodiment of the disclosure, the driving chip 100 not only can provide driving current, but also can collect feedback signals, which is equivalent to adding a detection function based on a conventional driving chip, so that the same driving chip 100 can be utilized to realize the driving of the light emitting element 120 and the detection of the working state.
The first end and the second end are both input and output ends, and can also be called as input and output ports, namely IO ports for short. The two IO ports of the driving chip 100 are respectively connected with two ends of at least two paths of light emitting elements 120, so that output of driving current and collection of feedback signals can be realized in a time-sharing manner, and influence on light emission is reduced while the circuit structure is ensured to be simple and detection feedback is realized.
The light emitting element 120 is driven to emit light by a periodic driving method, and the IO port is used to collect a feedback signal during one period and provide a driving current during the other period.
It can be appreciated that the time between the collection of the feedback signal can be set based on the requirements of the drive protection circuit, which is not limited herein.
In some embodiments, the driving chip 100 may be a constant current driving chip, and the corresponding feedback signal may be a voltage, and the number of light emitting elements 120 in a normal operation state can be determined by identifying the voltage.
In the embodiment of the disclosure, under a constant current driving mode, the driving chip 100 provides the driving current for the light emitting element 120, and when the light emitting element 120 is damaged, for example, broken, the voltage at two ends of the light emitting element 120 changes, so that whether the light emitting element 120 works abnormally can be judged based on whether the voltage changes by setting the feedback signal as the voltage, thereby being convenient for realizing the matching adjustment of the driving current.
Fig. 3 is a schematic structural diagram of another driving protection circuit provided by an embodiment of the present disclosure, and fig. 4 is a schematic structural diagram of another driving protection circuit provided by an embodiment of the present disclosure, each of which shows a structure in which two lamp beads are connected in series, where in the driving protection circuit shown in fig. 3, two lamp beads work normally, and in the driving protection circuit shown in fig. 4, one lamp bead (shown as D2 in fig. 4) is damaged, and the other lamp bead (shown as D1 in fig. 4) works normally. Referring to fig. 3 and 4, in a normal driving, i.e., in a state where both the lamp beads are operating normally, the driving current supplied from the driving chip 100 is a constant current of 20mA outputted, and the IO port is used as a detection port in one period at intervals of a preset number of periods, and the voltage across the light emitting element 120 is detected as a normal voltage or a reference feedback signal. If one of the lamp beads is damaged, the voltage detected by the driving chip 100 is changed from the normal voltage, for example, the normal voltage is suddenly changed to another voltage, and at this time, the lamp bead damage shown in fig. 4 corresponds to an abnormality of the light emitting element 120. At this time, the driving chip 100 adjusts the driving current, for example, adjusts the constant current 20mA to constant current 10mA, to ensure the reliability of the lamp beads and the entire display panel.
Fig. 3 and fig. 4 are only exemplary, and in other embodiments, the number of beads connected in series and the specific value of the driving current may be set based on the requirement of the driving protection circuit, so that the state detection and feedback adjustment of the light emitting element 120 may be implemented, which is not limited herein.
In other embodiments, the feedback signal may further include a signal such as brightness, which is capable of indicating the operation state of the light emitting element 120, which is not described herein again.
On the basis of the above embodiment, the embodiment of the present disclosure further provides a driving protection method, which may be applied to any one of the driving protection circuits provided in the above embodiment, to implement state detection and feedback adjustment of the light emitting element, so as to implement driving protection of the light emitting element.
In some embodiments, fig. 5 is a schematic flow chart of a driving protection method according to an embodiment of the disclosure. Referring to fig. 5, the method may include the steps of:
S210, acquiring a feedback signal.
In the embodiment of the disclosure, the feedback signal is obtained by detecting the working state of the light emitting element by the detecting element, and the feedback signal is a signal for representing the working state of the light emitting element.
In combination with the above, the feedback signal can be collected by the detection element and transmitted to the control element, and the control element can obtain the feedback signal correspondingly.
Or when the control element, the detection element and the driving element are all integrally arranged on the driving chip, the IO port of the driving chip can be multiplexed to realize the output of the driving current and the acquisition of the feedback signal in a time-sharing way.
S220, adjusting the driving current based on the feedback signal so that the light-emitting element works in the reference current range.
In the embodiment of the disclosure, the feedback signal can reflect the working state of the light emitting element, so that the driving current is adjusted according to the working state of the light emitting element, and the adjusted driving current can be adapted to the working state of the light emitting element, so that the light emitting element works in the reference current range, and the reliability and the service life of the light emitting element are ensured.
Illustratively, in combination with the above, the method may be performed by a control element or a driver chip.
According to the driving protection method provided by the embodiment of the disclosure, the working states of at least two paths of light-emitting elements can be detected, and the driving current is regulated according to the obtained feedback signals, so that the driving current is adapted to the working states, and the light-emitting elements all work in the reference current range, thereby realizing the driving protection of the light-emitting elements, and being beneficial to ensuring the reliability and the service life of the light-emitting elements.
In some embodiments, in the drive protection circuit of the common port of the feedback signal and the drive current, the feedback signal or the output drive current can be acquired based on the time sharing of the common port.
Illustratively, in combination with the above, when both the drive element and the detection element are provided in the drive chip, the two IO ports of the drive chip may be used as common ports.
Based on this, S201 may specifically include:
The drive current is provided by the common port at a first preset time, and the feedback signal is acquired by the common port at a second preset time.
The first preset time and the second preset time are staggered, and the first preset time is longer than the second preset time.
In the embodiment of the disclosure, the driving current and the acquisition feedback signal are respectively provided by using the common port at the first preset time and the second preset time which are staggered at intervals, so that the state detection and the feedback adjustment are realized while the simple structure of the driving protection circuit is ensured, the feedback signal and the driving current are not in conflict, and the influence of the state detection on the light-emitting driving is small.
Hereinafter, the first preset time and the second preset time are exemplarily described.
In some embodiments, the light emitting elements are periodically driven at a predetermined frequency, the second time comprises a predetermined number of periods, and the first time comprises one period.
In the embodiment of the present disclosure, the preset frequency may be 9600Hz or other frequency values, which may be set based on the requirements of the driving protection circuit and the laundry treating apparatus, without limitation.
In the embodiment of the present disclosure, the preset number is much larger than 1 to reduce the influence of the state detection on the light emission drive as much as possible.
For example, when N cycles are included in 1 second, one cycle is used to collect the feedback signal, and the remaining N-1 cycles are all used to output the driving current, i.e., one cycle is set every 1 second to collect the feedback signal. Or may be set to a period of 2 seconds to collect the feedback signal, or may be set to other time periods, which is not limited herein.
In some embodiments, the drive protection method further comprises:
When at least two paths of light-emitting elements are in a reference working state, a reference feedback signal is acquired, and a reference driving current is recorded.
In the embodiment of the disclosure, the reference working state refers to a working state that each path of light emitting element emits light normally, and in this working state, a reference feedback signal is obtained, and a reference driving current is recorded, so that a data basis is provided for adjusting the driving current by combining the feedback signal in a subsequent step.
Based on this, the adjusting the driving current based on the feedback signal in the above embodiment may specifically include the following steps:
determining the working states of at least two paths of light-emitting elements based on the reference feedback signals and the feedback signals;
the drive current is updated based on the operating state and the reference drive current.
In the embodiment of the disclosure, the working state of the light-emitting element can be determined by comparing the reference feedback signal and the feedback signal, and the driving current is updated according to the current working state and combined with the reference driving current to realize the adjustment of the driving current, so that the driving current after adjustment can be adapted to the working state of the light-emitting element, and the light-emitting element can work in the reference current range, thereby ensuring the reliability and the service life of the light-emitting element.
By way of example, with reference to the above description and fig. 3 and 4, taking the multiplexing of the IO ports of the driving chip, the time-sharing provision of the driving current and the collection of the feedback signal as an example, the driving protection method under the constant current driving is described in an exemplary manner as follows.
When the light emitting element is normally driven, i.e. when the light emitting element is in a normal working state, the constant current output of the IO port (for example, the SEG11 port of the driving chip) is 20mA, meanwhile, the SEG11 port is multiplexed as a detection port in one period every second, and the voltage at two ends of the light emitting element is detected, which can be represented by S1 and is marked as normal voltage drop.
If one of the light emitting elements is damaged, as shown in fig. 4. The SEG11 port detects a sudden change in pressure drop from S1 to S2. At this time, it is indicated that one light-emitting element is damaged, and only the other light-emitting element is turned on, and independently bears 20mA of current. For this, the SEG11 port adjusts the output driving current, for example, to 10mA constant current output, so as to ensure the reliability of the light emitting element (for example, the surface mount lamp bead) and the whole display board.
It should be noted that the technical solution provided in the embodiments of the present disclosure may also be applied to a structure in which three or more light emitting elements are connected in parallel, which is not limited herein.
Based on the same inventive concept, the embodiments of the present disclosure further provide a driving protection device, which may be implemented based on any one of the driving protection circuits provided in the foregoing embodiments, and optionally disposed in a driving element, so as to enable status detection and feedback adjustment of the light emitting element, so as to implement driving protection of the light emitting element.
In some embodiments, fig. 6 is a schematic structural diagram of a driving protection device according to an embodiment of the disclosure. Referring to fig. 6, the driving protection device 30 includes an acquisition module 310 for acquiring a feedback signal, the feedback signal being obtained by detecting an operating state of the light emitting element by the detection element, and an adjustment module 320 for adjusting a driving current based on the feedback signal so that the light emitting element operates within a reference current range.
It can be appreciated that the drive protection device shown in fig. 6 can implement the steps of any of the drive protection methods of the above embodiments, with corresponding effects.
The embodiment of the disclosure also provides a computer readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of any one of the methods provided in the foregoing embodiments, and achieve corresponding beneficial effects.
The disclosed embodiments also provide a laundry treatment apparatus including any one of the drive protection circuits provided in the above embodiments.
For example, the laundry treating apparatus may include a display panel, and the driving protection circuit is disposed in a circuit board corresponding to the display panel.
For example, the laundry treating apparatus may include a drum washing machine, a pulsator washing machine, a dryer, a washing and drying integrated machine, or other apparatuses, and is not described herein nor limited.
In other embodiments, the laundry treating apparatus may further include a laundry accommodating tub, a driving motor, and other structural and functional components known to those skilled in the art, and is not described herein nor limited.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A drive protection circuit, comprising:
at least two paths of light-emitting elements arranged in parallel;
A driving element connected with the at least two paths of light emitting elements and used for providing driving current for the light emitting elements;
The detection element is used for detecting the working states of the at least two paths of light-emitting elements to obtain feedback signals;
A control element for adjusting the drive current based on the feedback signal to operate the light emitting element within a reference current range;
The driving protection circuit further comprises a driving chip, and the control element, the driving element and the detection element are all arranged in the driving chip;
The first end and the second end of the driving chip are connected with the at least two paths of light-emitting elements and are used for outputting the driving current or collecting the feedback signal, wherein the time for outputting the driving current is staggered with the time for collecting the feedback signal.
2. The drive protection circuit of claim 1, wherein the drive chip is a constant current drive chip and the feedback signal is a voltage.
3. A drive protection method applied to the drive protection circuit of any one of claims 1-2, the method comprising:
the feedback signal is obtained by detecting the working state of the light-emitting element by the detecting element;
Adjusting the drive current based on the feedback signal to operate the light emitting element within a reference current range;
in the drive protection circuit of the feedback signal and the drive current common port, the obtaining the feedback signal includes:
Providing the driving current by using the common port at a first preset time, and collecting the feedback signal by using the common port at a second preset time;
The first preset time is staggered from the second preset time.
4. A drive protection method according to claim 3, wherein the first preset time is longer than the second preset time.
5. The driving protection method according to claim 4, wherein the light emitting element is periodically driven at a preset frequency;
The second preset time includes a preset number of cycles;
The first preset time includes one period.
6. The drive protection method according to any one of claims 3 to 5, further comprising:
When the at least two paths of light-emitting elements are in a reference working state, acquiring a reference feedback signal and recording a reference driving current;
The adjusting the drive current based on the feedback signal includes:
Determining the working states of the at least two paths of light-emitting elements based on the reference feedback signal and the feedback signal;
Updating the drive current based on the operating state and the reference drive current.
7. A drive protection device for use in a drive protection circuit according to any one of claims 1-2, said device comprising:
the acquisition module is used for acquiring a feedback signal, wherein the feedback signal is obtained by detecting the working state of the light-emitting element by the detection element;
an adjustment module for adjusting the driving current based on the feedback signal to operate the light emitting element within a reference current range;
In the drive protection circuit of the common port of the feedback signal and the drive current, the acquisition module is specifically configured to provide the drive current by using the common port in a first preset time, and acquire the feedback signal by using the common port in a second preset time, where the first preset time is staggered from the second preset time.
8. A computer readable storage medium having stored thereon a computer program, the computer program being executed by a processor to implement the steps of the method of any of claims 3-6.
9. A laundry treatment apparatus comprising the drive protection circuit according to any one of claims 1 to 2.
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| CN202211720102.1A CN116516614B (en) | 2022-12-30 | 2022-12-30 | Drive protection circuit, method, device, medium and laundry treatment apparatus |
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| CN202211720102.1A CN116516614B (en) | 2022-12-30 | 2022-12-30 | Drive protection circuit, method, device, medium and laundry treatment apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006056147A1 (en) * | 2006-11-28 | 2008-06-05 | Siemens Ag | Light-emitting semiconductor components function monitoring method for e.g. light signals at level crossings, involves detecting change of power input for recognition of failure of semiconductor components |
| TWI400989B (en) * | 2008-05-30 | 2013-07-01 | Green Solution Technology Inc | Light emitting diode driving circuit and controller thereof |
| CN102403900B (en) * | 2010-09-14 | 2014-10-08 | 登丰微电子股份有限公司 | Conversion controller |
| CN102625510A (en) * | 2012-03-14 | 2012-08-01 | 泰州市华强照明器材有限公司 | Adaptive light emitting diode (LED) fluorescent lamp |
| CN202713686U (en) * | 2012-08-21 | 2013-01-30 | 重庆三弓科技发展有限公司 | LED open circuit protection circuit |
| US9119270B2 (en) * | 2012-10-04 | 2015-08-25 | Osram Sylvania Inc. | Solid state lighting device and driver configured for failure detection and recovery |
| CN109922557A (en) * | 2017-12-13 | 2019-06-21 | 深圳Tcl新技术有限公司 | A kind of multipath LED constant current drive circuit, driving device and electrical equipment |
| CN111986625A (en) * | 2020-08-05 | 2020-11-24 | 深圳市华星光电半导体显示技术有限公司 | Backlight driving circuit and display device |
| CN114698196B (en) * | 2020-12-25 | 2025-07-22 | 深圳海翼智新科技有限公司 | Light-emitting control circuit and monitoring device |
| CN115379620A (en) * | 2022-07-13 | 2022-11-22 | 深圳市兰蝶照明工程技术有限公司 | LED constant current driving circuit and method |
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Effective date of registration: 20231016 Address after: 214028 China Sensor Network International Innovation Park, No. 200, Linghu Avenue, Taihu International Science and Technology Park, Wuxi City, Jiangsu Province Applicant after: WUXI FILIN ELECTRONICS Co.,Ltd. Applicant after: Wuxi Little Swan Electric Co.,Ltd. Address before: 214028 China Sensor Network International Innovation Park, No. 200, Linghu Avenue, Taihu International Science and Technology Park, Wuxi City, Jiangsu Province Applicant before: WUXI FILIN ELECTRONICS Co.,Ltd. |
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