A wireless microphone, control method, and storage medium

Abstract

The present invention provides a wireless microphone, a control method and a storage medium. The wireless microphone includes an induction circuit, a microprocessor, a power control circuit, a mute circuit, a sound pickup processing circuit and a radio frequency transmission circuit. The induction circuit is connected to the microprocessor, and the microprocessor is respectively connected to the power control circuit, the mute circuit and the sound pickup processing circuit. The mute circuit and the sound pickup processing circuit are respectively connected to the radio frequency transmission circuit. The induction circuit is used to detect the angle between the wireless microphone and a reference plane, the acceleration and the movement direction of the wireless microphone. The microprocessor controls the power control circuit and the mute circuit according to the detection results of the induction circuit. Whether to enter the mute mode is determined by the angle between the wireless microphone and the reference plane. Even if the wireless microphone remains stationary, but its angle is greater than the mute angle, it is judged that it is operating normally and remains powered on. After use, when the wireless microphone is rotated to an angle below the mute angle, it automatically switches to the mute mode and / or the energy-saving mode, which is more energy-efficient.

Description

Technical Field

[0001] The present invention belongs to the technical field of wireless microphones, and particularly relates to a wireless microphone, a control method and a storage medium. Background Art

[0002] Wireless microphones are widely used in various occasions, such as KTVs, concerts, meetings, speeches, etc. Users will hold the wireless microphone by hand or fix the wireless microphone on a bracket. As users' requirements for the intelligence of wireless microphones are getting higher and higher, the wireless microphone needs to automatically switch to the mute mode when not in use to prevent the wireless microphone from making noise when not in use.

[0003] In the current prior art, a gyroscope is generally used to detect the motion posture of the wireless microphone. In the patent document with the application number 201320198451.1 and the patent name "A Wireless Microphone", it is disclosed that the gyroscope is used to automatically detect whether the wireless microphone is in the user's hand. If it is not in the user's hand for more than a certain period of time, the power supply can be automatically cut off, and it can also be used as a human hand motion sensor to complete the operation function. It can be seen that it takes whether the wireless microphone is in the user's hand as the determination basis for normal operation. If there is no hand holding it, the power supply will be automatically cut off. However, in this solution, when the wireless microphone is fixed on a bracket, since the gyroscope cannot distinguish the difference between horizontal and any angle, it will enter an operation misunderstanding due to misjudgment of the angle, and the wireless microphone will be mispowered off, affecting the user experience of the customer; in addition, when the wireless microphone drops in various different directions, there are often huge noises, affecting the use experience.

[0004] Therefore, in order to meet the scenario requirements for use in a stationary state and to avoid generating noise when dropping, it is necessary to distinguish between the two states of the wireless microphone being used statically or being idle statically, and to accurately confirm that the wireless microphone is in the process of dropping. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a wireless microphone, a control method and a storage medium, which solve the problem that the wireless microphone enters an operation misunderstanding in the static use state in the prior art, and overcome the defect of misjudgment in the mute processing.

[0006] To achieve the above object, in a first aspect, the present invention provides a wireless microphone, which includes an induction circuit, a microprocessor, a power control circuit, a mute circuit, a sound pickup processing circuit, and a radio frequency transmitting circuit. The induction circuit is connected to the microprocessor, and the microprocessor is respectively connected to the power control circuit, the mute circuit, and the sound pickup processing circuit. The mute circuit and the sound pickup processing circuit are respectively connected to the radio frequency transmitting circuit. The induction circuit is used to detect the angle between the wireless microphone and a reference plane, the acceleration of the wireless microphone, and the movement direction. The microprocessor controls the power control circuit and the mute circuit according to the detection results of the induction circuit.

[0007] In some embodiments, the induction circuit includes a ball switch circuit, and the ball switch circuit is used to detect the angle between the wireless microphone and the reference plane in real time.

[0008] In some embodiments, the reference plane is in the horizontal direction.

[0009] In some embodiments, the induction circuit further includes a gyro induction circuit, and the gyro induction circuit is used to detect the acceleration and movement direction of the wireless microphone in real time.

[0010] In some embodiments, the sound pickup processing circuit includes a sound pickup head and an audio processing circuit. The sound pickup head is used to pick up external sound sources, and the audio processing circuit is used to perform processing actions including at least audio amplification on the external sound sources.

[0011] In a second aspect, the present invention provides a control method for a wireless microphone. The control method includes:

[0012] Obtain the current real-time spatial position of the wireless microphone, and calculate the angle between the real-time spatial position and the reference plane;

[0013] Judge the magnitude relationship between the angle and the mute angle;

[0014] If the angle is less than or equal to the mute angle, start timing. When the duration reaches the first timing time, enter the mute mode; when the duration reaches the second timing time, enter the energy-saving mode;

[0015] If the angle is greater than the mute angle and the duration reaches the third timing time, enter the power-on mode.

[0016] In some embodiments, the reference plane is in the horizontal direction, and the mute angle is 15°.

[0017] In some embodiments, the control method further includes:

[0018] Obtain the current motion state of the wireless microphone, and the motion state includes the acceleration and movement direction of the wireless microphone;

[0019] Determine the direction and / or magnitude of the acceleration and the direction of motion;

[0020] If the drop condition is satisfied, enter the silent mode. The drop condition is that the value of the component acceleration of the acceleration in the direction of gravity is greater than or equal to the acceleration due to gravity, and there is a positive component velocity of the direction of motion in the direction of gravity;

[0021] If the drop condition is not satisfied, enter the powered-on mode.

[0022] In some embodiments, obtain the direction of motion of the wireless microphone. If the direction of motion coincides with the direction of the preset route within a set time, trigger a gesture action, and the gesture action includes but is not limited to adjusting the volume, switching modes, changing songs, and pausing.

[0023] In a third aspect, the present invention provides a computer-readable storage medium, on which computer instructions are stored. When the computer instructions are executed by a processor, the steps of the control method of the wireless microphone as described above are implemented.

[0024] Advantages of the present invention:

[0025] Therefore, according to the embodiments of the present disclosure, the angle between the wireless microphone and the reference plane is detected by the ball switch circuit in the induction circuit, and whether to enter the silent mode is determined by the angle between the wireless microphone and the reference plane. Even if the wireless microphone remains stationary, but its angle is greater than the silent angle, it is determined that it is operating normally and remains powered on, which is convenient for users to use; after use, rotate the wireless microphone below the silent angle, and automatically switch to the silent mode and / or energy-saving mode, which is more energy-efficient.

[0026] The acceleration and the direction of motion of the wireless microphone are detected by the gyro induction circuit in the induction circuit. According to whether the value of the component acceleration of the acceleration in the direction of gravity is greater than or equal to the acceleration due to gravity, and whether there is a positive component velocity of the direction of motion in the direction of gravity, it is determined whether the wireless microphone is in a dropped state. If so, enter the silent mode to prevent noise during the dropping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the following drawings.

[0028] Figure 1 It is a schematic diagram of the framework of a wireless microphone in an embodiment of the present disclosure.

[0029] Figure 2 It is a framework flowchart of a control method of a wireless microphone in an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] Known technologies, methods, and devices for those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.

[0033] The applicant has found through research that:

[0034] In the current prior art, a gyroscope is generally used to detect the motion posture of a wireless microphone. When the wireless microphone is fixed on a bracket, since the gyroscope cannot distinguish the difference between horizontal and any angle, it will enter an operating error due to misjudgment of the angle, and the wireless microphone will be accidentally powered off, affecting the use of customers; in addition, when the wireless microphone drops in various directions, there are often huge noises, affecting the use experience.

[0035] Therefore, in order to meet the scenario requirements for use in a stationary state and to avoid generating noises when dropping, it is necessary to distinguish between the two states of whether the wireless microphone is in use or idle at rest, and also accurately confirm that the wireless microphone is in the process of dropping.

[0036] In view of this, with reference to Figure 1, in an embodiment of the present disclosure, a wireless microphone is provided, which includes an induction circuit, a microprocessor, a power control circuit, a mute circuit, a sound pickup processing circuit, and a radio frequency transmission circuit. The induction circuit is connected to the microprocessor, and the microprocessor is respectively connected to the power control circuit, the mute circuit, and the sound pickup processing circuit. The mute circuit and the sound pickup processing circuit are respectively connected to the radio frequency transmission circuit. The induction circuit is used to detect the angle between the wireless microphone and a reference plane, the acceleration and movement direction of the wireless microphone. The microprocessor controls the power control circuit and the mute circuit according to the detection results of the induction circuit. The power control circuit is used to control the overall power of the wireless microphone, and correspondingly, there is an energy-saving mode, that is, when the condition for entering the energy-saving mode is met, the power control circuit controls to turn off the power and enter the shutdown state; the mute circuit is used to control the on-off state between the sound pickup processing circuit and the radio frequency transmission circuit. When operating normally, the sound pickup processing circuit and the radio frequency transmission circuit are in a connected state, and the sound is picked up normally and the audio signal is transmitted normally. However, when entering the mute state, the mute circuit cuts off the connection between the sound pickup processing circuit and the radio frequency transmission circuit, so that the picked-up sound cannot be transmitted, achieving the mute effect.

[0037] It should be noted that as the core circuit in the present disclosure, the induction circuit has two major functions, namely, detecting the angle between the wireless microphone and the reference plane, and detecting the acceleration and movement direction of the wireless microphone. Taking the center line of the wireless microphone as the reference line, its orthographic projection on the reference plane is obtained to get the projection line, and the angle between the reference line and the projection line is calculated. Even when the wireless microphone is in a stationary state, by judging the size of this angle, it can be distinguished whether the wireless microphone is in use or idle. When in a concert or a meeting, the wireless microphone is sometimes fixed on a bracket, and the pickup is at a certain angle pointing to the user's mouth. At this time, even in a stationary state, due to the large angle, the wireless microphone can still work normally. After the speech, when the wireless microphone is rotated to a horizontal angle, the power is automatically cut off, which is more energy-efficient and low-power; however, in other scenarios, such as in a cultural performance, after the singer finishes the performance, instead of turning off the power, the wireless microphone is directly placed on the tabletop. At this time, the wireless microphone is horizontally placed, and the angle is less than the mute angle. Then, the microprocessor controls the mute circuit to cut off the connection between the sound pickup processing circuit and the radio frequency transmission circuit, so that the sound cannot be transmitted, and the sound is cut off, preventing the secondary howling of the sound; of course, there are many such scenarios. For example, in a KTV hall, when the singer casually places the wireless microphone horizontally on the sofa, it will also automatically switch to the mute mode.

[0038] Additionally, by detecting the acceleration and movement direction of the wireless microphone, it is determined whether the wireless microphone is in a falling state based on whether the component acceleration value of the acceleration in the direction of gravity is greater than or equal to the acceleration due to gravity and whether there is a positive component velocity of the movement direction in the direction of gravity. If so, it enters the mute mode to prevent noise during the fall.

[0039] In this embodiment, the induction circuit includes a ball switch circuit. The ball switch circuit is used to detect the angle between the wireless microphone and the reference plane in real time. The ball switch circuit includes a ball switch. The types of ball switches include, but are not limited to, ball-type tilt induction switches and ball-type omnidirectional signal trigger switches, which can achieve detection at any angle. After determining the reference plane for installing the ball switch, when the center line of the ball switch is in this reference plane, it is in the off state; when the angle between the center line of the ball switch and this reference plane exceeds 15°, it is in the connected state, and thus two different states are distinguished according to the angle.

[0040] As an implementation manner, the reference plane is in the horizontal direction, that is, when the wireless microphone is in the horizontal state, it enters the mute mode or the energy-saving mode, and when the angle between the wireless microphone and the horizontal plane is greater than 15°, it enters the power-on mode.

[0041] In this embodiment, the induction circuit further includes a gyro induction circuit. The gyro induction circuit is used to detect the acceleration and movement direction of the wireless microphone in real time. The gyro induction circuit includes a gyroscope sensor and communicates with the microprocessor at high speed through an IC. When the component acceleration value of the acceleration of the wireless microphone in the direction of gravity is greater than or equal to the acceleration due to gravity and there is a positive component velocity of the movement direction in the direction of gravity, the falling condition is met, and then it enters the mute mode.

[0042] As an implementation manner, the sound pickup processing circuit includes a sound pickup head and an audio processing circuit. The sound pickup head is used to pick up external sound sources, and the audio processing circuit is used to perform processing actions on the external sound sources that at least include audio amplification. The external sound sources picked up by the sound pickup head are amplified and other processed by the audio processing circuit and then transmitted to the receiver corresponding to the wireless microphone by the radio frequency transmitting circuit.

[0043] Refer to Figure 2 , in the embodiments of the present disclosure, a control method for a wireless microphone is further provided. The control method includes:

[0044] Obtain the current real-time spatial position of the wireless microphone and calculate the angle between the real-time spatial position and the reference plane;

[0045] Judge the size relationship between the angle and the mute angle;

[0046] If the included angle is less than or equal to the mute angle, start timing. When the duration reaches the first timing time, enter the mute mode; when the duration reaches the second timing time, enter the energy-saving mode;

[0047] If the included angle is greater than the mute angle and the duration reaches the third timing time, enter the power-on mode.

[0048] It should be noted that after the initialization of the port, through the detection of the ball switch circuit and the calculation of the microprocessor, the included angle between the current position of the wireless microphone and the reference plane is obtained. This included angle is updated in real time. Additionally, the current real-time spatial position of the wireless microphone contains multiple different-dimensional information about the position in this space. In this embodiment, the angle is detected through the ball switch circuit, and in other embodiments, the position information of other dimensions can also be detected; when the included angle is less than or equal to the mute angle, start timing. When the first timing time is reached, the mute circuit cuts off the connection state between the sound pickup processing circuit and the RF transmission circuit, so that the picked-up sound cannot be transmitted, and enter the mute mode; when the second timing time is reached, the power control circuit cuts off the overall power supply of the wireless microphone and enters the energy-saving mode. Additionally, since the included angle is updated in real time, if the included angle is greater than the mute angle and the third timing time is reached, the power control circuit reconnects the overall power supply of the wireless microphone and enters the power-on mode.

[0049] As an implementation method, the reference plane is in the horizontal direction, and the mute angle is 15°. When the included angle between the center line of the ball switch and the reference plane is less than 15°, it is in the off state; when the included angle between the center line of the ball switch and this reference plane exceeds 15°, it is in the connected state. Of course, the vertical plane can also be used as the reference plane.

[0050] In this embodiment, the control method further includes:

[0051] Obtain the current motion state of the wireless microphone, where the motion state includes the acceleration and motion direction of the wireless microphone;

[0052] Judge the direction and / or magnitude of the acceleration and motion direction;

[0053] If the drop condition is met, enter the mute mode. The drop condition is that the component acceleration value of the acceleration in the direction of gravity is greater than or equal to the acceleration due to gravity, and there is a positive component velocity of the motion direction in the direction of gravity;

[0054] If the drop condition is not met, enter the power-on mode.

[0055] It should be noted that there are many types of falling situations, including free-fall, parabolic fall, and even vertical acceleration fall. Among these various falling situations, as long as the wireless microphone is separated from the human hand and is only moving under the action of gravity, the component acceleration in the direction of gravity is generally equal to the acceleration due to gravity. Of course, it is not excluded that there is an external force acting on the wireless microphone downward. In this case, the component acceleration in the direction of gravity will be greater than the acceleration due to gravity. In addition to meeting the acceleration requirement, there is also a requirement for the movement direction of the wireless microphone. If there is no positive component velocity in the direction of gravity in its movement direction, it proves that it is not moving downward, that is, it is impossible to fall. Therefore, it is necessary to meet the requirement that there is a positive component velocity in the direction of gravity in the movement direction. When both the acceleration and velocity requirements are met, the mute circuit cuts off the connection state between the sound pickup processing circuit and the radio frequency transmission circuit, so that the picked-up sound cannot be transmitted and enters the mute mode. However, if either of the conditions is not met, it enters the power-on mode.

[0056] Additionally, if the wireless microphone is already in the power-on mode, entering the power-on mode at this time means maintaining the power-on mode.

[0057] As an implementation, obtain the movement direction of the wireless microphone. If the movement direction coincides with the direction of the preset route within the set time, trigger a gesture action. The gesture action includes, but is not limited to, adjusting the volume, switching modes, changing songs, and pausing. Use the ball switch circuit and the gyroscopic sensing circuit to detect the angle and movement direction, and combine the fitting route of the multiple movement trajectories of the wireless microphone. Compare the fitting route within the set time with the preset route. For example, in a KTV scenario, the preset route is an S shape. If the wireless microphone also makes a fitting route that coincides with the S shape within 3 seconds, it means the song playback is paused. Among them, the ball switch is a mechanical vibration sensing element. When the product vibrates, due to the jitter of the internal parts, corresponding pulse signals will be generated. These pulse signals reflect the amplitude and direction of the wireless microphone, which helps improve the fitting accuracy.

[0058] The embodiments of the present disclosure also provide a computer-readable storage medium, on which computer instructions are stored. When the computer instructions are executed by a processor, the steps of the control method of the wireless microphone as described above are implemented.

[0059] The system, device, module, or unit illustrated in the above embodiments can be specifically implemented by a computer chip or entity, or by a product with a certain function. A typical implementation device is a computer. The specific form of the computer can be a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email transceiver device, a game console, a tablet computer, a wearable device, or a combination of any several of these devices.

[0060] In a typical configuration, a computer includes one or more processors (CPUs), an input / output interface, a network interface, and memory.

[0061] The memory may include non-permanent memory in the form of computer-readable media, random access memory (RAM) and / or non-volatile memory such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0062] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can store information by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tapes, disk storage, quantum memory, graphene-based storage media, or other magnetic storage devices, or any other non-transmission media that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transitory media such as modulated data signals and carrier waves.

[0063] Compared with the prior art, a wireless microphone, a control method, and a storage medium provided by the present invention detect the angle between the wireless microphone and a reference plane through a ball switch circuit in an induction circuit, and determine whether it enters a mute mode based on the angle between the wireless microphone and the reference plane. Even if the wireless microphone remains stationary, but its angle is greater than the mute angle, it is determined that it is in normal operation and remains powered on, which is convenient for users to use; after use, the wireless microphone is rotated to an angle below the mute angle, and automatically switches to the mute mode and / or energy-saving mode, which is more energy-efficient.

[0064] Detect the acceleration and movement direction of the wireless microphone through a gyro induction circuit in the induction circuit, and determine whether the wireless microphone is in a falling state based on whether the component acceleration value of the acceleration in the direction of gravity is greater than or equal to the acceleration due to gravity, and whether there is a positive component velocity of the movement direction in the direction of gravity. If so, enter the mute mode to prevent noise during the falling process.

[0065] Finally, it should be emphasized that the present invention is not limited to the above embodiments. The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A wireless microphone, characterized in that, It includes an induction circuit, a microprocessor, a power control circuit, a mute circuit, a sound pickup processing circuit, and a radio frequency transmission circuit. The induction circuit is connected to the microprocessor, and the microprocessor is respectively connected to the power control circuit, the mute circuit, and the sound pickup processing circuit. The mute circuit and the sound pickup processing circuit are respectively connected to the radio frequency transmission circuit. The induction circuit is used to detect the angle between the wireless microphone and the reference plane, the acceleration of the wireless microphone, and the movement direction. The microprocessor controls the power control circuit and the mute circuit according to the detection results of the induction circuit; The mute circuit is used to control the on-off state between the sound pickup processing circuit and the radio frequency transmission circuit. When operating normally, the sound pickup processing circuit and the radio frequency transmission circuit are in a connected state. When entering the mute state, the mute circuit cuts off the connection between the sound pickup processing circuit and the radio frequency transmission circuit; The induction circuit includes a ball switch circuit, and the ball switch circuit is used to detect the angle between the wireless microphone and the reference plane in real time; the reference plane is in the horizontal direction; The microprocessor is configured to judge the magnitude relationship between the angle and the mute angle; If the angle is less than or equal to the mute angle, start timing. When the duration reaches the first timing time, enter the mute mode; when the duration reaches the second timing time, enter the energy-saving mode; If the angle is greater than the mute angle and the duration reaches the third timing time, enter the power-on mode; The induction circuit further includes a gyro induction circuit, and the gyro induction circuit is used to detect the acceleration and movement direction of the wireless microphone in real time; The sound pickup processing circuit includes a sound pickup head and an audio processing circuit. The sound pickup head is used to pick up external sound sources, and the audio processing circuit is used to perform processing actions on the external sound sources including at least audio amplification; The wireless microphone is configured to apply the following control method: Obtain the current real-time spatial position of the wireless microphone and calculate the angle between the real-time spatial position and the reference plane; Judge the magnitude relationship between the angle and the mute angle; If the angle is less than or equal to the mute angle, start timing. When the duration reaches the first timing time, enter the mute mode; when the duration reaches the second timing time, enter the energy-saving mode; If the angle is greater than the mute angle and the duration reaches the third timing time, enter the power-on mode; The reference plane is in the horizontal direction, and the mute angle is 15°; The control method further includes: Obtain the current motion state of the wireless microphone, and the motion state includes the acceleration and movement direction of the wireless microphone; Judge the direction and / or magnitude of the acceleration and movement direction; If the drop condition is met, enter the mute mode. The drop condition is that the component acceleration value of the acceleration in the direction of gravity is greater than or equal to the acceleration due to gravity, and there is a positive component velocity of the movement direction in the direction of gravity; If the drop condition is not met, enter the power-on mode; Obtain the movement direction of the wireless microphone. If the movement direction coincides with the direction of the preset route within the set time, trigger a gesture action, and the gesture action includes but is not limited to adjusting the volume, switching modes, skipping songs, and pausing.

Images