CN210776165U - Sound control type screen dissipation device - Google Patents

Abstract

The utility model discloses an acoustic control type screen dissipating device, which comprises a motor drive box bottom shell 1 and an upper cover, wherein a power management module 4 for supplying power to the whole system, a sound detection module 3 for collecting environmental sound and converting the environmental sound into an analog signal, a main control module 5 for converting the analog signal into a digital signal, an indicator lamp 6 for displaying the running state of the whole system and a voltage control module 2 for reducing the power supply voltage are arranged in the motor drive box bottom shell 1; the sound detection module captures external sound and transmits a signal to the main control module; the main control module is connected with the sound detection module, the voltage control module and the power management module, and when a signal is transmitted into the sound detection module, the main control module closes the switch to introduce a power supply into the voltage control module; the voltage control module reduces the voltage to a set voltage and controls the motor to vibrate through the motor wiring port. The utility model discloses a to the detection of sound, realized the automatic switch control to the motor in the offsetting device.

Description

Sound control type screen dissipation device

Technical Field

The utility model relates to a traditional light source projecting apparatus upgrades the control field of the speckle remove device who is laser source rear projector, specifically is an acoustic control formula screen dissipation device, can be applied to fields such as cinema projection, engineering projection.

Background

Laser light sources are considered to be revolutionary light sources in the projection display industry. The ultra-large color gamut and the ultra-high color saturation cater to the pursuit of consumers for extremely enjoying image quality, and the ultra-long service life of 30000 hours can save the cost of frequently replacing bulbs and the labor cost of equipment maintenance for cinema operators. Laser projection has therefore gained increasing attention in recent years to the display industry, particularly the cinema projection industry.

The speckle problem of the laser is severe. Speckle refers to that a coherent light source irradiates on a rough object, the scattered light has the same wavelength and a constant phase, so that interference is generated in the air to be constructive or destructive, and finally, granular light and dark spots appear on a screen, which is called as "speckle" in the industry. Speckle can affect the image display effect, and long-term viewing can cause discomfort to the viewer, thereby reducing the viewing experience.

To reduce the speckle effect, theaters are typically equipped with some dissipative devices: a plurality of tiny vibration units (micro motors) are attached to the back of the screen, and the vibration units drive the screen to vibrate together through power supply so as to achieve the purpose of eliminating speckles. The drive portion of a conventional dissipater has several control modes: 1. network communication, 2, wireless, 3, remote controller. The network communication is suitable for short-distance transmission, and the distance between a cinema machine room and a projection hall is often dozens of meters, so that the control is difficult in actual operation. Wireless signals are easily affected by the surrounding environment, so that the phenomenon of instability is caused; and the transmission speed of the wireless network is slow. The anti-interference capability of the remote controller is poor, and the infrared remote controller cannot pass through a barrier to carry out remote control or control equipment at a large angle; the cost of the Bluetooth remote controller is too high, which is not beneficial to comprehensive popularization. Therefore, a cinema device which is convenient to open and close is urgently needed.

According to statistics, the pictures without sound in the movie feature film will not exceed five minutes, so it is considered that the opening and closing of the motor drive box is controlled by sound.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a dissipation device which can realize automatic switch, a sound detection module is added in a motor driving box of a vibration unit, and the switch of the motor driving box is controlled by a mode of detecting sound and then converting the sound into a digital signal; the limitations of difficult operation, unstable signals and high manufacturing cost of other control modes are solved to a great extent.

The utility model discloses an adopt following technical scheme to realize:

the utility model provides an acoustic control formula screen dissipation device, includes motor drive case drain pan and upper cover, be equipped with in the motor drive case drain pan and be used for the power management module of entire system power supply, be used for gathering environmental sound and convert analog signal's sound detection module, be used for converting analog signal into digital signal's host system, be used for showing the pilot lamp of entire system operation condition, be used for the voltage control module that reduces supply voltage.

The sound detection module captures external sound and transmits a signal to the main control module; the main control module is connected with the sound detection module, the voltage control module and the power supply management module, and when a signal is transmitted into the sound detection module, the main control module closes the switch to introduce a power supply into the voltage control module; the voltage control module reduces the voltage to a set voltage and controls the motor to vibrate through the motor wiring port.

The sound detection module is arranged in the shell of the motor driving box, can be used for carrying out sensitivity adjustment, is used for capturing external sound and then transmits a signal to the main control module; the main control module comprises a single chip microcomputer, is connected with the sound detection module and the voltage control module and is used for controlling each part of the motor driving box, and when a signal is transmitted into the sound detection module, the main control module closes a switch to introduce a power supply into the voltage control module; the voltage control module is connected with the main control module and used for reducing the voltage to a set voltage, when the main control module closes the switch, the voltage control module can regulate and control the voltage, then power is supplied to the motor, and the motor is driven to rotate at a certain frequency, so that the screen dissipation effect is achieved.

Acoustic control formula screen dissipating device, through the detection to sound, realized the automatic switch control to the motor in the dissipating device, compare with several kinds of control methods expensive, complicated, unstable before, have low in cost, accurate control, simple operation's advantage, have fine practical application and worth.

Drawings

Fig. 1 shows a schematic structural diagram of the present invention.

Fig. 2 shows a schematic view of the present invention.

In the figure: the system comprises a motor driving box bottom shell, a voltage control module, a sound detection module, a power management module, a main control module, a switch button and indicator lamp, a motor wiring port and a power socket, wherein the motor driving box bottom shell is 2, the voltage control module is 3, the power management module is 4, the main control module is 5, the switch button and indicator lamp is 6, and the motor wiring port is 7.

Detailed Description

The following describes in detail specific embodiments of the present invention with reference to the accompanying drawings.

A sound control type screen dissipation device is shown in figure 1 and comprises a motor driving box and a motor, wherein the motor driving box comprises a bottom shell, an upper cover, a voltage control module, a sound detection module, a power management module, a main control module, a switch key, an indicator lamp, a motor wiring port, a power socket and the like. Specifically as shown in fig. 2, power management module 4 is used for supplying power for entire system, and sound detection module 3 is used for gathering environmental sound and converts analog signal into, and host system 5 is used for converting analog signal into digital signal, and pilot lamp 6 is used for showing entire system operation conditions, and voltage control module 2 is used for reducing supply voltage to the settlement voltage, and the motor is used for supplementary screen vibrations and eliminates the speckle.

In specific implementation, the sound detection module 3 is provided with a fixing bolt hole, is conveniently arranged in a shell of the motor driving box and is used for capturing external sound, and the sensitivity of the sound detection module 3 can be adjusted by adjusting a digital potentiometer button and is adjusted when the sound detection module is installed for the first time; the sound detection module 3 transmits a signal to the main control module 5, that is, when the sound detection module captures enough sound decibels, the signal is transmitted to the main control module 5. The power management module 4 comprises an adapter that connects to a power outlet 8. The main control module 5 comprises a single chip microcomputer, is connected with the sound detection module, the voltage control module, the power management module 4, the switch keys and the indicator lamp 6, and is used for controlling all parts of the motor driving box, and when receiving the transmission signal of the sound detection module 3, the main control module can correspondingly control the indicator lamp and the voltage control module 2. The voltage control module 2 is welded on the PCB through pins and connected with the main control module 5, when the main control module 5 transmits a signal, the voltage control module 2 outputs a set voltage to the motor wiring port 7, the voltage control (voltage reduction) module can adjust the output voltage, the set voltage can be adjusted through a potentiometer, and the motor is driven to rotate at a certain frequency, so that the screen dissipation effect is achieved; the voltage control module 2 has a certain voltage range, and under the condition that the voltage control module 2 is used for a long time, the voltage is generally adjusted to 2.5V and is adjusted when the voltage control module is installed for the first time. The indicator light and the keys are integrated, and an indicator light connecting wire does not need to be connected. All the modules are installed in a motor driving box, the motor driving box comprises a bottom shell and an upper cover, the bottom shell and the upper cover are fixed together through eight countersunk head screws, the motor driving box is connected with a motor through a plug-in motor wiring port, and the motor vibrates through self vibration to cause screen vibration, so that the effect of eliminating speckles is achieved. When the sound detection module 3 can not catch enough environment sound decibels, the sound detection module can transmit a signal to the main control module 5, the main control module can disconnect the switch, the power supply is stopped, the power supply is further transmitted to the indicating lamp 6 and the voltage control module 2, and the indicating lamp is turned off and the motor stops vibrating at the moment.

The electric control part of the whole dissipation device adopts a voice control mode, and whether the motor needs to be powered on or not can be judged by detecting the size of environmental sound, so that the problem of complex switching of the cinema voice control device is solved, and the service life of the vibration motor is also solved.

During practical application, the main control module in the device is connected with the four voltage control modules, four rows of vibration motors are usually installed behind the screen in practical work, and each row of vibration motors is controlled by one voltage control module.

The technical solution of the present invention is clearly and completely described above. Obviously, the embodiments described are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments made by those skilled in the art without making creative efforts shall also belong to the protection scope of the present invention.

Claims (3)

1. A sound control type screen dissipation device comprises a motor drive box bottom shell (1) and an upper cover, and is characterized in that: a power management module (4) for supplying power to the whole system, a sound detection module (3) for collecting environmental sound and converting the environmental sound into an analog signal, a main control module (5) for converting the analog signal into a digital signal, an indicator lamp (6) for displaying the running state of the whole system and a voltage control module (2) for reducing the power supply voltage are arranged in the bottom shell (1) of the motor drive box,

the sound detection module (3) captures external sound and transmits a signal to the main control module (5); the main control module is connected with the sound detection module (3), the voltage control module and the power management module (4), and when a signal is transmitted into the sound detection module (3), the main control module (5) closes the switch to introduce a power supply into the voltage control module (2); the voltage control module (2) reduces the voltage to a set voltage and then controls the motor to vibrate through the motor wiring port (7).

2. The sound controlled screen dissipater of claim 1, wherein: the sensitivity of the sound detection module (3) is adjusted by a potentiometer.

3. The sound controlled screen dissipater of claim 1, wherein: the set voltage of the voltage control module (2) is adjusted through a potentiometer.

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