Fall protection method, projector, device, and storage medium

Abstract

The application discloses a fall protection method, a projector, equipment and a storage medium, wherein the fall protection method is applied to the projector and comprises the following steps: when the projector is in operation, a fall acceleration value output by a sensor is acquired, the sensor is used for detecting whether the projector is in a falling state; it is judged whether the fall acceleration value exceeds a preset fall acceleration threshold value; if the fall acceleration value exceeds the fall acceleration threshold value, it is judged that the projector is in the falling state, and the color wheel motor is subjected to emergency deceleration or braking. The application solves the problem that the color wheel motor in operation is extremely easy to be damaged when falling occurs, and reduces the probability of damage of the color wheel motor by subjecting the color wheel motor to emergency deceleration or braking when it is detected that the projector is in the falling state.

Description

Technical Field

[0001] This application relates to the field of projection technology, and in particular to a drop protection method, projector, device, and storage medium. Background Technology

[0002] Currently, projectors are mainly divided into DLP projectors and LCD projectors. DLP projectors typically use a color wheel to separate and process colors. White light emitted from the light source is focused onto the color wheel through a lens, and a high-speed motor drives the color wheel to rotate, separating the white light into beams of different colors. This high-speed motor is highly susceptible to damage from impacts during high-speed rotation. As projectors become increasingly convenient, and more and more projectors carry batteries, the likelihood of them being dropped during use is also increasing, making the color wheel motor highly vulnerable to damage. Therefore, protecting the high-speed rotating color wheel motor from drops has become a major concern. Thus, it is necessary to propose a solution to reduce the probability of color wheel motor damage in the event of a projector being dropped during use. Summary of the Invention

[0003] The main objective of this application is to provide a drop protection method, apparatus, device, and storage medium, which aims to solve the problem that operating color wheel motors are easily damaged when dropped, and reduce the probability of color wheel motor damage.

[0004] To achieve the above objectives, this application provides a drop protection method applied to a projector, the projector including a color wheel and a color wheel motor for driving the color wheel to rotate, the drop protection method including:

[0005] When the projector is operating, the drop acceleration value output by the sensor is acquired, wherein the sensor is used to detect whether the projector is in a drop state;

[0006] Determine whether the drop acceleration value exceeds a preset drop acceleration threshold;

[0007] If the drop acceleration threshold is exceeded, the projector is determined to be in a drop state, and the color wheel motor is decelerated or stopped urgently.

[0008] Optionally, before the step of obtaining the drop acceleration value output by the sensor, the method further includes:

[0009] Acquire and determine the type of information output by the sensor;

[0010] If the information type is an acceleration value signal, then the following step is performed: obtain the drop acceleration value output by the sensor.

[0011] Optionally, after the step of acquiring and determining the type of information output by the sensor, the method further includes:

[0012] If the information type is an interrupt signal, then the interrupt signal is received by the CPU;

[0013] The CPU issues commands to perform emergency deceleration or braking.

[0014] Optionally, after the step of acquiring and determining the type of information output by the sensor, the method further includes:

[0015] If the information type is an interrupt signal, then the interrupt signal is received through the motor drive controller;

[0016] The color wheel motor can be decelerated or stopped urgently by the motor drive controller.

[0017] Optionally, the step of emergency deceleration or braking of the color wheel motor includes:

[0018] Control the color wheel motor to perform emergency deceleration;

[0019] Alternatively, the color wheel motor can be braked by reverse driving;

[0020] Alternatively, the color wheel motor can be stopped by terminating the drive.

[0021] Optionally, after determining that the projector is in a falling state, the method further includes: immediately shutting off the light source.

[0022] Optionally, after determining that the projector is in a drop state, the method further includes:

[0023] Warnings are given via horn and / or alarms are given via indicator lights.

[0024] This application also proposes a projector, which includes a color wheel and a color wheel motor for driving the color wheel to rotate. The projector further includes:

[0025] The signal acquisition module is used to acquire the drop acceleration value output by the sensor when the projector is operating, wherein the sensor is used to detect whether the projector is in a drop state;

[0026] The logic judgment module is used to determine whether the drop acceleration value exceeds a preset drop acceleration threshold.

[0027] An emergency braking module is used to determine that the projector is in a falling state if the drop acceleration threshold is exceeded, and to perform emergency deceleration or braking on the color wheel motor.

[0028] This application also proposes an apparatus comprising a memory, a processor, and a drop protection program stored in the memory and executable on the processor, wherein the drop protection program, when executed by the processor, implements the steps of the drop protection method as described above.

[0029] This application also proposes a computer-readable storage medium storing a drop protection program, which, when executed by a processor, implements the steps of the drop protection method described above.

[0030] The drop protection method, projector, device, and storage medium proposed in this application include: when the projector is operating, acquiring a drop acceleration value output by a sensor, wherein the sensor is used to detect whether the projector is in a drop state; determining whether the drop acceleration value exceeds a preset drop acceleration threshold; if it exceeds the drop acceleration threshold, determining that the projector is in a drop state, and performing emergency deceleration or braking on the color wheel motor. Since the possibility of damage to the color wheel motor due to impact is significantly reduced at relatively low speeds or when it is stopped, the sensor identifies the state of the projector and its color wheel motor to determine whether it is in a drop process. If it is in a drop process, emergency deceleration or braking is immediately performed on the projector's color wheel motor, reducing the possibility of damage to the color wheel motor due to a drop while the projector is operating; simultaneously, emergency deceleration or braking of the color wheel driven by the motor also reduces damage to the color wheel caused by the drop. Based on the solution of this application, early protection of the color wheel motor can significantly reduce the probability of damage to the color wheel motor and its driven color wheel, improving the reliability of the projector's operation. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the functional modules of the equipment to which the drop protection device belongs in this application belongs;

[0032] Figure 2 This is a flowchart illustrating a first exemplary embodiment of the drop protection method of this application;

[0033] Figure 3 This is a schematic diagram of the process implemented before the step of acquiring the drop acceleration value output by the sensor, as per the second exemplary embodiment of the drop protection method of this application;

[0034] Figure 4 This is a flowchart illustrating another method implemented after the step of acquiring and determining the type of information output by the sensor, which is a second exemplary embodiment of the drop protection method of this application;

[0035] Figure 5This is a flowchart illustrating another method implemented after the step of acquiring and determining the type of information output by the sensor, which is a second exemplary embodiment of the drop protection method of this application;

[0036] Figure 6 This is a flowchart illustrating a fourth exemplary embodiment of the drop protection method of this application.

[0037] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0039] The main solution of this application embodiment is as follows: When the projector is operating, the drop acceleration value output by the sensor is acquired, wherein the sensor is used to detect whether the projector is in a drop state; it is determined whether the drop acceleration value exceeds a preset drop acceleration threshold; if it exceeds the drop acceleration threshold, it is determined that the projector is in a drop state, and the color wheel motor is urgently decelerated or stopped. The step of urgently decelerating or stopping the color wheel motor may include: controlling the color wheel motor to perform emergency deceleration; or, braking the color wheel motor by reversing the drive; or, stopping the color wheel motor by terminating the drive. Since the possibility of the color wheel motor being damaged by impact force is greatly reduced when the speed is relatively low or the motor is stopped, the sensor identifies the state of the projector and its color wheel motor to determine whether it is in a drop process. If it is in a drop process, the color wheel motor of the projector is immediately subjected to emergency deceleration or stopping, reducing the possibility of the projector falling and damaging the color wheel motor while in operation; at the same time, the emergency deceleration or stopping of the color wheel driven by the motor also reduces the damage to the color wheel caused by the drop. Based on the solution proposed in this application, the color wheel motor can be stopped in advance, which can significantly reduce the probability of damage to the color wheel motor and the color wheel it drives, and improve the reliability of the projector's operation.

[0040] Specifically, refer to Figure 1 , Figure 1 This is a functional module diagram of the equipment to which the drop protection device of this application belongs. The drop protection device can be a device that is independent of the equipment and can decelerate or stop the color wheel motor. It can be carried on the equipment in the form of hardware or software.

[0041] In this embodiment, the device to which the drop protection device belongs includes at least an output module 110, a processor 120, a memory 130, and a communication module 140.

[0042] The memory 130 stores the operating system and drop protection program. The drop protection device can store information such as the drop acceleration value output by the sensor, the preset drop acceleration threshold, the judgment result that the projector is in a drop state, the information type output by the sensor, the interrupt signal output by the sensor, and the action command to execute emergency deceleration or braking issued by the CPU in the memory 130. The output module 110 can be a display screen, etc. The communication module 140 can include a WIFI module, a mobile communication module, and a Bluetooth module, etc., and communicates with external devices or servers through the communication module 140.

[0043] When the drop protection program in memory 130 is executed by the processor, it performs the following steps:

[0044] When the projector is operating, the drop acceleration value output by the sensor is acquired, wherein the sensor is used to detect whether the projector is in a drop state;

[0045] Determine whether the drop acceleration value exceeds a preset drop acceleration threshold;

[0046] If the drop acceleration threshold is exceeded, the projector is determined to be in a drop state, and the color wheel motor is decelerated or stopped urgently.

[0047] Furthermore, when the drop protection program in memory 130 is executed by the processor, it also performs the following steps:

[0048] Acquire and determine the type of information output by the sensor;

[0049] If the information type is an acceleration value signal, then the following step is performed: obtain the drop acceleration value output by the sensor.

[0050] Furthermore, when the drop protection program in memory 130 is executed by the processor, it also performs the following steps:

[0051] If the information type is an interrupt signal, then the interrupt signal is received by the CPU;

[0052] The CPU issues commands to perform emergency deceleration or braking.

[0053] Furthermore, when the drop protection program in memory 130 is executed by the processor, it also performs the following steps:

[0054] If the information type is an interrupt signal, then the interrupt signal is received through the motor drive controller;

[0055] The color wheel motor can be decelerated or stopped urgently by the motor drive controller.

[0056] Furthermore, when the drop protection program in memory 130 is executed by the processor, it also performs the following steps:

[0057] Control the color wheel motor to perform emergency deceleration;

[0058] Alternatively, the color wheel motor can be braked by reverse driving;

[0059] Alternatively, the color wheel motor can be stopped by terminating the drive.

[0060] Furthermore, when the drop protection program in memory 130 is executed by the processor, it also performs the following steps:

[0061] Emergency shutdown of the light source.

[0062] Furthermore, when the drop protection program in memory 130 is executed by the processor, it also performs the following steps:

[0063] Warnings are given via horn and / or alarms are given via indicator lights.

[0064] This embodiment, through the above-described scheme, specifically acquires the drop acceleration value output by a sensor when the projector is operating. The sensor is used to detect whether the projector is in a drop state; it determines whether the drop acceleration value exceeds a preset drop acceleration threshold; if it exceeds the threshold, the projector is determined to be in a drop state, and the color wheel motor is immediately decelerated or stopped. Since the possibility of damage to the color wheel motor from impact is significantly reduced at relatively low speeds or when it is stopped, the sensor identifies the state of the projector and its color wheel motor to determine whether it is in a drop process. If it is, an emergency deceleration or stop is immediately performed on the projector's color wheel motor, reducing the possibility of damage to the color wheel motor from a drop while the projector is operating. Simultaneously, the emergency deceleration or stop of the motor-driven color wheel also reduces damage to the color wheel caused by the drop. Based on this scheme, the early stop protection of the color wheel motor can significantly reduce the probability of damage to the color wheel motor and its driven color wheel, improving the reliability of the projector's operation.

[0065] Based on, but not limited to, the above-described device architecture, this application proposes method embodiments.

[0066] First Embodiment

[0067] Reference Figure 2 , Figure 2This is a flowchart illustrating a first exemplary embodiment of the drop protection method of this application. The executing entity of this embodiment can be a drop protection device, a drop protection equipment, or a server. This embodiment uses a drop protection device as an example. This drop protection device can be integrated into a device with data processing capabilities, such as a projector. The projector may include a color wheel and a color wheel motor that drives the color wheel to rotate. The drop protection method includes:

[0068] Step S10: When the projector is operating, the drop acceleration value output by the sensor is acquired, wherein the sensor is used to detect whether the projector is in a drop state.

[0069] In this embodiment, after the projector is powered on, the color wheel motor rotates at high speed during operation. When the projector is operating normally, the CPU polls and monitors the built-in sensors, acquiring the drop acceleration values ​​collected and output by the sensors. The sensors are used to detect whether the projector is in a falling state.

[0070] The projector includes components such as a light source, a color wheel, a color wheel motor, a light modulator, and a projection lens. The light source can be an LED light source, a pure laser light source, or a laser phosphor light source, etc., and is used to generate the illumination light required for projection and to incident the illumination light onto the color wheel; the color wheel motor is used to drive the color wheel to rotate, so that the illumination light, after passing through the color wheel, becomes primary color light of different colors (such as R, G, B) in sequence; the light modulator can be a DMD, LCoS, or LCD, etc., and is used to modulate the primary color light to generate image light, which is then projected onto the imaging area such as a screen or wall through the projection lens to form a projected image.

[0071] Optionally, the type of projector in this embodiment may include, but is not limited to, DLP projectors, LCoS projectors, and LCD projectors.

[0072] Optionally, the color wheel may include, but is not limited to, a color filter wheel, a fluorescent wheel, and a color filter-fluorescent integrated wheel; optionally, the sensor may include, but is not limited to, a gyroscope, a velocity sensor, and an accelerometer.

[0073] Step S20: Determine whether the drop acceleration value exceeds a preset drop acceleration threshold.

[0074] In this embodiment, the obtained drop acceleration value is judged based on a preset drop acceleration threshold to determine whether the drop acceleration value exceeds the drop acceleration threshold.

[0075] Step S30: If the drop acceleration threshold is exceeded, it is determined that the projector is in a drop state, and the color wheel motor is decelerated or stopped urgently.

[0076] In this embodiment, if the drop acceleration value exceeds the preset drop acceleration threshold, it is determined that the projector is in a drop state. At this time, the CPU immediately issues relevant action commands to control the color wheel motor in operation to perform emergency deceleration or braking, so as to protect the color wheel motor and the color wheel it drives.

[0077] This embodiment, through the above-described scheme, specifically acquires the drop acceleration value output by a sensor when the projector is operating. The sensor is used to detect whether the projector is in a drop state; it determines whether the drop acceleration value exceeds a preset drop acceleration threshold; if it exceeds the threshold, the projector is determined to be in a drop state, and the color wheel motor is immediately decelerated or stopped. Since the possibility of damage to the color wheel motor from impact is significantly reduced at relatively low speeds or when it is stopped, the sensor identifies the state of the projector and its color wheel motor to determine whether it is in a drop process. If it is, an emergency deceleration or stop is immediately performed on the projector's color wheel motor, reducing the possibility of damage to the color wheel motor from a drop while the projector is operating. Simultaneously, the emergency deceleration or stop of the motor-driven color wheel also reduces damage to the color wheel caused by the drop. Based on this scheme, the early stop protection of the color wheel motor can significantly reduce the probability of damage to the color wheel motor and its driven color wheel, improving the reliability of the projector's operation.

[0078] Second Embodiment

[0079] Based on the first embodiment described above, this embodiment also discloses a method performed before the step of acquiring the drop acceleration value output by the sensor. (Refer to...) Figure 3 , Figure 3 This is a schematic flowchart illustrating the process performed before the step of acquiring the drop acceleration value output by the sensor, as per a second exemplary embodiment of the drop protection method of this application. In this embodiment, before the step of acquiring the drop acceleration value output by the sensor, the drop protection method may further include: step S01, acquiring and determining the type of information output by the sensor.

[0080] In this embodiment, when the projector is operating normally, the CPU polls and monitors the built-in sensors, acquiring the types of information collected and output by the sensors. Optionally, the types of information output by the sensors may include: acceleration value signals and / or interrupt signals.

[0081] Optionally, if the information type is an acceleration value signal, then step S10 is executed to obtain the drop acceleration value output by the sensor.

[0082] Optionally, this embodiment also discloses another method implemented after the step of acquiring and determining the type of information output by the sensor. (Refer to...) Figure 4 , Figure 4 This is a flowchart illustrating another method implemented after the step of acquiring and determining the type of information output by the sensor, which is a second exemplary embodiment of the drop protection method of this application. After acquiring and determining the type of information output by the sensor in step S01, the method may further include:

[0083] Step S40: If the information type is an interrupt signal, then the interrupt signal is received by the CPU;

[0084] In step S50, the CPU issues a command to perform emergency deceleration or braking.

[0085] In this embodiment, since some sensors have built-in interrupt output functionality, after acquiring the drop acceleration value, the sensor can automatically determine a threshold value based on the drop acceleration value internally. If the determination result exceeds the set threshold, indicating a drop, an interrupt signal is directly output. Therefore, if the output information type is an interrupt signal, the CPU receives the interrupt signal, makes a judgment, and then issues an emergency deceleration or braking command to the relevant execution components of the system. The relevant execution components then control the operating color wheel motor to perform emergency deceleration or braking.

[0086] Optionally, this embodiment also discloses another method implemented after the step of acquiring and determining the type of information output by the sensor. (See also...) Figure 5 , Figure 5 This is a flowchart illustrating another method implemented after the step of acquiring and determining the type of information output by the sensor, which is a second exemplary embodiment of the drop protection method of this application. After acquiring and determining the type of information output by the sensor in step S01, the method may further include:

[0087] Step S60: If the information type is an interrupt signal, then the interrupt signal is received through the motor drive controller;

[0088] Step S70: The color wheel motor is decelerated or stopped urgently by the motor drive controller.

[0089] In this embodiment, if the output information type is an interrupt signal, the interrupt signal can be directly sent to the motor driver. Without CPU intervention, the motor driver sends the interrupt signal to the motor drive controller, which receives the interrupt signal. Then, the motor drive controller controls the running color wheel motor to perform emergency deceleration or braking to protect the color wheel motor and the color wheel it drives.

[0090] This embodiment, through the above-described scheme, specifically involves acquiring and determining the type of information output by the sensor when the projector is operating; if the information type is an acceleration value signal, then acquiring the drop acceleration value output by the sensor, wherein the sensor is used to detect whether the projector is in a falling state; determining whether the drop acceleration value exceeds a preset drop acceleration threshold; if it exceeds the drop acceleration threshold, determining that the projector is in a falling state, and performing emergency deceleration or braking on the color wheel motor; if the information type is an interrupt signal, then receiving the interrupt signal through the CPU; and issuing an action command to perform emergency deceleration or braking through the CPU; or, if the information type is an interrupt signal, receiving the interrupt signal through the motor drive controller; and performing emergency deceleration or braking on the color wheel motor through the motor drive controller. Since the likelihood of damage to the color wheel motor from impact is significantly reduced when the projector is at relatively low speed or stopped, sensors are used to identify the status of the projector and its color wheel motor to determine if it is in the process of being dropped. If a drop is in progress, the projector's color wheel motor is immediately decelerated or stopped, reducing the possibility of damage to the motor from a fall while the projector is in operation. Simultaneously, the emergency deceleration or stopping of the motor-driven color wheel also reduces damage to the color wheel from the fall. Based on this solution, proactively stopping the color wheel motor significantly reduces the probability of damage to the motor and the driven color wheel, improving the reliability of the projector's operation.

[0091] Third Embodiment

[0092] Based on the first and second embodiments described above, this embodiment further discloses a method for emergency deceleration or braking of the color wheel motor. In this embodiment, the steps for emergency deceleration or braking of the color wheel motor may include at least one of the following:

[0093] Optionally, the color wheel motor can be controlled to perform emergency deceleration.

[0094] In this embodiment, if the obtained drop acceleration value exceeds the preset drop acceleration threshold, it is determined that the projector is in a drop state. At this time, the color wheel motor is decelerated urgently by control components such as the CPU or motor driver.

[0095] Alternatively, the color wheel motor can be braked by reverse driving.

[0096] In this embodiment, as an alternative to the above method, the color wheel motor can also be braked by reverse driving of the motor, so that the color wheel motor can be decelerated or even stopped by reverse power.

[0097] Optionally, the color wheel motor can be stopped by terminating the drive.

[0098] In this embodiment, as an alternative to the above method, the color wheel motor can also be stopped by the motor-driven termination drive function.

[0099] In this embodiment, the color wheel motor is quickly decelerated or stopped after the projector is detected to be in a falling state. This allows the color wheel motor and the color wheel it drives to decelerate significantly or even stop rotating in a short period of time, thus providing early protection against the color wheel motor and its color wheel.

[0100] Furthermore, this embodiment also discloses a method implemented after determining that the projector is in a drop state. In this embodiment, after determining that the projector is in a drop state, it may further include at least one of the following:

[0101] Optionally, the light source is shut off in an emergency. In this embodiment, after determining that the projector is in a drop state, the color wheel motor is urgently decelerated or stopped, and the projector light source is shut off in an emergency. It should be noted that when the illumination light emitted from the light source shines on the color wheel, the color wheel generates heat. When the color wheel decelerates, stops, or stops rotating due to a drop malfunction, the heat generated by the light will accumulate on the color wheel, causing damage to it.

[0102] Therefore, turning off the light source in time can prevent the color wheel from being damaged by high temperature; in addition, when the light source is turned off, the projector stops emitting light, which can prevent light from shining into the user's eyes when it is dropped or restored to its position, thus protecting the user's eyes from direct strong light.

[0103] Optionally, a warning can be issued via a horn and / or an alarm can be triggered by an indicator light. In this embodiment, after determining that the projector is in a falling state, the color wheel motor is urgently decelerated or stopped, and a warning is issued via a horn and / or an alarm is triggered by an indicator light.

[0104] When a projector is dropped, it can alert users in time to take emergency measures to prevent the projector from falling to the ground, or remind users to check the status of the projector after the fall.

[0105] Fourth embodiment

[0106] Reference Figure 6 , Figure 6 This is a schematic flowchart illustrating a fourth exemplary embodiment of the drop protection method of this application. In this embodiment, the drop protection method may further include:

[0107] Step S00: The projector is turned on, and the color wheel motor enters normal working condition.

[0108] Step S01: When the projector is operating, the CPU polls and monitors the built-in sensors of the machine and obtains the drop acceleration value collected and output by the sensors, wherein the sensors are used to detect whether the projector is in a drop state.

[0109] Step S02: Based on a preset drop acceleration threshold, determine whether the drop acceleration value exceeds the preset drop acceleration threshold.

[0110] Step S031: If the drop acceleration threshold is not exceeded, return to step S01: When the projector is operating, the CPU polls and monitors the built-in sensors of the machine and obtains the drop acceleration values ​​collected and output by the sensors.

[0111] Step S032: If the drop acceleration threshold is exceeded, it is determined that the projector is in a drop state, and the color wheel motor is decelerated or stopped urgently.

[0112] Step S04: Execute other linkage mechanisms of the system, such as emergency shutdown of the light source, warning through the speaker and / or alarm through the indicator light, or stop the projector from working.

[0113] This embodiment, through the above-described scheme, specifically acquires the drop acceleration value output by a sensor when the projector is operating. The sensor is used to detect whether the projector is in a drop state; it determines whether the drop acceleration value exceeds a preset drop acceleration threshold; if it exceeds the threshold, the projector is determined to be in a drop state, and the color wheel motor is immediately decelerated or stopped. Since the possibility of damage to the color wheel motor from impact is significantly reduced at relatively low speeds or when it is stopped, the sensor identifies the state of the projector and its color wheel motor to determine whether it is in a drop process. If it is, an emergency deceleration or stop is immediately performed on the projector's color wheel motor, reducing the possibility of damage to the color wheel motor from a drop while the projector is operating. Simultaneously, the emergency deceleration or stop of the motor-driven color wheel also reduces damage to the color wheel caused by the drop. Based on this scheme, the early stop protection of the color wheel motor can significantly reduce the probability of damage to the color wheel motor and its driven color wheel, improving the reliability of the projector's operation.

[0114] Furthermore, embodiments of this application also propose a projector, the projector including a color wheel and a color wheel motor for driving the color wheel to rotate, the projector further including:

[0115] The signal acquisition module is used to acquire the drop acceleration value output by the sensor when the projector is operating, wherein the sensor is used to detect whether the projector is in a drop state;

[0116] The logic judgment module is used to determine whether the drop acceleration value exceeds a preset drop acceleration threshold.

[0117] An emergency braking module is used to determine that the projector is in a falling state if the drop acceleration threshold is exceeded, and to perform emergency deceleration or braking on the color wheel motor.

[0118] The principle and implementation process of this projector are explained in the above embodiments, and will not be repeated here.

[0119] Furthermore, this application also proposes an apparatus comprising a memory, a processor, and a drop protection program stored in the memory and executable on the processor, wherein the drop protection program, when executed by the processor, implements the steps of the drop protection method as described above.

[0120] Since this drop protection program employs all the technical solutions of all the aforementioned embodiments when executed by the processor, it has at least all the beneficial effects brought about by all the technical solutions of all the aforementioned embodiments, which will not be elaborated here.

[0121] Furthermore, embodiments of this application also propose a computer-readable storage medium storing a drop protection program, which, when executed by a processor, implements the steps of the drop protection method as described above.

[0122] Since this drop protection program employs all the technical solutions of all the aforementioned embodiments when executed by the processor, it has at least all the beneficial effects brought about by all the technical solutions of all the aforementioned embodiments, which will not be elaborated here.

[0123] Compared to existing technologies, the drop protection method, projector, device, and storage medium proposed in this application acquire drop acceleration values ​​output by sensors when the projector is operating. The sensors detect whether the projector is in a drop state; determine whether the drop acceleration value exceeds a preset drop acceleration threshold; if it exceeds the threshold, the projector is determined to be in a drop state, and the color wheel motor is immediately decelerated or stopped. Since the possibility of damage to the color wheel motor from impact is significantly reduced at relatively low speeds or when it is stopped, the sensor identifies the state of the projector and its color wheel motor to determine whether it is in a drop process. If it is, an emergency deceleration or stop is immediately performed on the projector's color wheel motor, reducing the possibility of damage to the color wheel motor from a drop while the projector is operating. Simultaneously, the emergency deceleration or stop of the motor-driven color wheel also reduces damage to the color wheel caused by the drop. Based on the solution proposed in this application, the color wheel motor can be stopped in advance, which can significantly reduce the probability of damage to the color wheel motor and the color wheel it drives, and improve the reliability of the projector's operation.

[0124] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0125] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0126] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a device to execute the methods of each embodiment of this application.

[0127] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A drop protection method applied to a projector, characterized in that, The projector includes a color wheel and a color wheel motor that drives the color wheel to rotate; the drop protection method includes: Acquire and determine the type of information output by the sensor, wherein the information type includes acceleration value signal and / or interrupt signal; if the information type is acceleration value signal, then execute the step: acquire the drop acceleration value output by the sensor; When the projector is operating, the drop acceleration value output by the sensor is acquired, wherein the sensor is used to detect whether the projector is in a drop state; Determine whether the drop acceleration value exceeds a preset drop acceleration threshold; If the drop acceleration threshold is exceeded, the projector is determined to be in a drop state, and the color wheel motor is decelerated or stopped urgently. Specifically, this includes: controlling the color wheel motor to decelerate urgently through the CPU or motor driver; or, braking the color wheel motor by reverse driving; or, stopping the color wheel motor by terminating the drive.

2. The drop protection method according to claim 1, characterized in that, After the step of acquiring and determining the type of information output by the sensor, the method further includes: If the information type is an interrupt signal, then the interrupt signal is received by the CPU; The CPU issues commands to perform emergency deceleration or braking.

3. The drop protection method according to claim 1, characterized in that, After the step of acquiring and determining the type of information output by the sensor, the method further includes: If the information type is an interrupt signal, then the interrupt signal is received through the motor drive controller; The color wheel motor can be decelerated or stopped urgently by the motor drive controller.

4. The drop protection method according to claim 1, characterized in that, After determining that the projector is in a falling state, the method further includes: immediately shutting off the light source.

5. The drop protection method according to claim 1, characterized in that, After determining that the projector is in a falling state, the method further includes: Warnings are given via horn and / or alarms are given via indicator lights.

6. A projector, characterized in that, The projector includes a color wheel and a color wheel motor for driving the color wheel to rotate, and the projector also includes: The signal acquisition module is used to acquire and determine the type of information output by the sensor, wherein the information type includes acceleration value signal and / or interrupt signal; if the information type is acceleration value signal, then the following step is executed: acquire the drop acceleration value output by the sensor; The signal acquisition module is also used to acquire the drop acceleration value output by the sensor when the projector is operating, wherein the sensor is used to detect whether the projector is in a drop state; The logic judgment module is used to determine whether the drop acceleration value exceeds a preset drop acceleration threshold. An emergency braking module is used to determine that the projector is in a falling state if the drop acceleration threshold is exceeded, and to perform emergency deceleration or braking on the color wheel motor. Specifically, this includes: controlling the color wheel motor to perform emergency deceleration through the CPU or motor driver; or, braking the color wheel motor through reverse drive; or, stopping the color wheel motor by terminating the drive.

7. A device, characterized in that, The device includes a memory, a processor, and a drop protection program stored in the memory and executable on the processor, wherein the drop protection program, when executed by the processor, implements the steps of the drop protection method as described in any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a drop protection program, which, when executed by a processor, implements the steps of the drop protection method as described in any one of claims 1-5.

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