CN209861058U - Wireless projector and control circuit thereof - Google Patents
Wireless projector and control circuit thereof Download PDFInfo
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- CN209861058U CN209861058U CN201920960283.2U CN201920960283U CN209861058U CN 209861058 U CN209861058 U CN 209861058U CN 201920960283 U CN201920960283 U CN 201920960283U CN 209861058 U CN209861058 U CN 209861058U
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Abstract
The utility model belongs to the technical field of wireless projecting apparatus, a wireless projecting apparatus and control circuit thereof is provided. The wireless projector control circuit includes: a wireless communication module configured to receive a video signal of the mobile terminal; an audio circuit configured to receive and process an input audio signal; the infrared sensing module is configured to sense an object close to the lens of the wireless projector and output a sensing signal when sensing the object; the main controller is connected with the wireless communication module, the audio circuit and the infrared induction module, projects the video signal on a screen, and closes the wireless projector according to the induction signal; and the interface module is connected with the main controller and is configured to receive an external signal. The wireless communication module is in communication connection with the mobile terminal, and the video signal of the mobile terminal is transmitted to the wireless projector to be displayed or the display content of the mobile terminal is projected through the wireless projector.
Description
Technical Field
The utility model belongs to the technical field of wireless projecting apparatus, especially, relate to a wireless projecting apparatus and control circuit thereof.
Background
A projector is an optical instrument that magnifies the contour of a workpiece using an optical element and projects it onto a screen. It can be used for profile measurement by transmitted light, and also can be used for measuring the surface shape of a blind hole and observing the surface of a part by reflected light. The projector is particularly suitable for measuring complex contours and small workpieces, such as clock parts, stamping parts, electronic elements, templates, dies, threads, gears, forming cutters and the like, and has high inspection efficiency and convenient use; the method is widely applied to measuring rooms and production workshops, and is particularly suitable for the industries of instruments and meters and clocks.
With the development of electronic technology, people are more and more used to carry out daily work and life by using mobile terminal equipment such as mobile phones and tablet computers. Due to the characteristic that the common computer is inconvenient to move, the common computer is more and more difficult to meet the daily life of people, the pursuit of the large screen by people is not stopped all the time, on one hand, people hope to enjoy the effect of the large screen display at any time and any place, and on the other hand, the requirements on the performance and the portability of electronic products are further improved.
However, the existing projector has single function, cannot meet the increasing demands of people, does not have remote real-time communication, cannot realize one-to-one or one-to-many real-time audio and video interaction, has certain defects, and cannot bring convenience to the life and work of people.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wireless projector and control circuit thereof aims at solving the projector function singleness that exists among the traditional technical scheme, can not satisfy people demand day by day, does not possess the problem of long-range real-time interchange.
A wireless projector control circuit, the wireless projector control circuit comprising:
the wireless communication module is configured to establish communication connection with a mobile terminal and receive a video signal of the mobile terminal;
an audio circuit configured to receive and process an input audio signal;
the infrared sensing module is configured to sense an object close to the lens of the wireless projector and output a sensing signal when sensing the object;
the main controller is connected with the wireless communication module, the audio circuit and the infrared induction module, projects the video signal on a screen, and closes the wireless projector according to the induction signal;
and the interface module is connected with the main controller and is configured to receive an external signal.
In one embodiment, the audio circuit comprises an audio plug and a power amplification chip; the power amplification chip is connected with the audio plug and the main controller, and is configured to amplify the audio signal input by the audio plug.
In one embodiment, the system further comprises a reset circuit, wherein the reset circuit is connected with the main controller and is configured to reset the system.
In one embodiment, the interface module includes a USB interface and an HDMI interface, and both the USB interface and the HDMI interface are connected to the host controller.
In one embodiment, the USB interface is a USB-a type interface, and is configured to be connected to an external intelligent terminal, and is used for exchanging data with the intelligent terminal and charging the intelligent terminal.
In one embodiment, the interface module comprises a Type-C interface and a signal conversion chip; the signal conversion chip is connected in Type-C interface with between the main control unit, configure to will the USB signal of Type-C interface output converts the HDMI signal into.
In one embodiment, the wireless communication module is a WiFi module.
In one embodiment, the WiFi module comprises an antenna, a 2.4G chip, a 5G chip, and a switch module; the antenna with the 2.4G chip and the 5G chip is connected, the 2.4G chip with main control unit connects, the 5G chip passes through switch module with main control unit connects.
In one embodiment, the switch module includes an MOS transistor, a source of the MOS transistor is connected to the dc power supply, a drain of the MOS transistor is connected to a power supply terminal of the 5G chip, and a gate of the MOS transistor is connected to the main controller.
Further, there is provided a wireless projector including: the wireless projector control circuit is described above.
Foretell wireless projector control circuit through wireless communication module and mobile terminal communication connection, shows mobile terminal's video signal transmission to wireless projector or throws mobile terminal's demonstration content through wireless projector machine, is sensing in addition through infrared induction module and is being close to during the object of wireless projector camera lens position, in time close wireless projector's ray apparatus.
Drawings
Fig. 1 is a schematic structural diagram of a control circuit of a wireless projector according to an embodiment of the present invention;
FIG. 2 is an exemplary circuit schematic of a wireless communication module in the wireless projector control circuit shown in FIG. 1;
FIG. 3 is an exemplary circuit schematic of a reset circuit in the wireless projector control circuit shown in FIG. 1;
fig. 4 is an exemplary circuit schematic of an audio circuit in the wireless projector control circuit shown in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
Fig. 1 shows the structure diagram of the wireless projector control circuit provided by the preferred embodiment of the present invention, as shown in fig. 1, the present invention provides a wireless projector control circuit, which includes: a wireless communication module 10, an audio circuit 20, an infrared sensing module 3030, a main controller 40 and an interface module 50. The wireless communication module 10 is configured to establish a communication connection with a mobile terminal and receive a video signal of the mobile terminal; the audio circuit 20 is configured to receive and process an input audio signal; the infrared sensing module 30 is configured to sense an object near the lens of the wireless projector, and output a sensing signal when sensing the object; the main controller 40 is connected with the wireless communication module 10, the audio circuit 20 and the infrared sensing module 30, projects the video signal on the screen, and closes the optical machine of the wireless projector according to the sensing signal; the interface module 50 is connected to the main controller 40 and configured to receive an external signal. Through wireless communication module 10 and mobile terminal communication connection, transmit mobile terminal's video signal to wireless projector and show or throw mobile terminal's demonstration content through wireless projector machine, in addition through infrared induction module 30 response when sensing the object that is close to wireless projector camera lens position, in time close wireless projector's ray apparatus. In this embodiment, the main controller 40 employs an MSD6a638 control chip.
As shown in fig. 2, in one embodiment, the wireless communication module 10 is a WiFi module. The WiFi module comprises an antenna, a 2.4G chip U2, a 5G chip U1 and a switch module; the antenna is connected with the 2.4G chip U2 and the 5G chip U1, the 2.4G chip U2 is connected with the main controller 40, and the 5G chip U1 is connected with the main controller 40 through the switch module. The WiFi module is suitable for two wireless communication modes of 2.4G and 5G, and 2.4G and 5G share the antenna, so that the communication versatility of the wireless projector is increased, and meanwhile, the main controller 40 turns on or off the 2.4G chip U2 and the 5G chip U1 through the switch module to control the 2.4G chip U2 and the 5G chip U1 to receive the video signal sent by the mobile terminal.
In one embodiment, the switch module includes a MOS transistor Q1, a source of the MOS transistor Q1 is connected to a dc power supply, a drain of the MOS transistor Q1 is connected to a power supply terminal of the 5G chip U1 and a power supply terminal of the 2.4G chip U2, a gate of the MOS transistor Q1 is connected to the main controller 40, the main controller 40 outputs a control signal to control on and off of the MOS transistor Q1, the control signal is a high-level signal and a low-level signal, when the control signal is a high-level signal, the MOS transistor Q1 is turned on, the 5G chip U1 and the 2.4G chip U2 receive a video signal sent by the mobile terminal through an antenna, and when the control signal is a low-level signal, the MOS transistor Q1 is turned off, and the 5G chip U1 and the 2.4G chip U2.
As shown in fig. 4, in one embodiment, the audio circuit 20 includes an audio plug and a power amplification chip U4; the power amplification chip U4 is connected to the audio plug and the main controller 40, and is configured to amplify the audio signal input from the audio plug. In practical application, the audio plug is connected with the audio output interface of the mobile terminal in a matching manner, the audio signal output by the mobile terminal is output to the power amplification chip U4 through the audio plug, the audio signal is amplified, and finally the audio signal and the video signal are played synchronously through the playing device, so that the complete video and audio are projected onto the screen through the wireless projector. Wherein, the playing device is a common loudspeaker or a loudspeaker.
In one embodiment, the interface module 50 includes a USB interface and an HDMI interface, both of which are connected to the main controller 40. In one embodiment, the USB interface is a USB-a type interface, and is configured to be connected to an external intelligent terminal, and is used for exchanging data with the intelligent terminal and charging the intelligent terminal. The intelligent terminal can be a smart phone, a tablet computer, a computer and the like. In one embodiment, the interface module comprises a Type-C interface and a signal conversion chip; the signal conversion chip is connected between the Type-C interface and the main controller 40, and is configured to convert the USB signal output by the Type-C interface into an HDMI signal.
As shown in fig. 3, in one embodiment, the above-mentioned wireless projector control circuit further includes a reset circuit, which is connected to the main controller 40 and configured to reset the system. The reset circuit comprises a reset button SW3 and a voltage detection chip U3, one end of the reset button is connected with a reset pin of the voltage detection chip U3, the other end of the reset button SW3 is grounded, a resistor R33 is connected between the reset pin of the voltage detection chip U3 and a power supply pin of the voltage detection chip U3, the reset pin of the voltage detection chip U3 is connected with a main controller 40, after the reset button SW3 is pressed, the reset circuit outputs a reset signal to the main controller 40, and a control system of the main controller 40 resets.
Furthermore, on the basis of above-mentioned wireless projector control circuit, the utility model also provides a wireless projector, this wireless projector includes: the wireless projector control circuit is described above.
To sum up, the utility model provides a wireless projecting apparatus control circuit, wireless projecting apparatus control circuit includes: wireless communication module 10, audio circuit 20, infrared sensing module 30, main controller 40 and interface module 50. The wireless communication module 10 is configured to establish a communication connection with a mobile terminal and receive a video signal of the mobile terminal; the audio circuit 20 is configured to receive and process an input audio signal; the infrared sensing module is configured to sense an object close to the lens of the wireless projector and output a sensing signal when sensing the object; the main controller 40 is connected with the wireless communication module 10, the audio circuit 20 and the infrared sensing module, projects the video signal on the screen, and closes the optical machine of the wireless projector according to the sensing signal; the interface module 50 is connected to the main controller 40 and configured to receive an external signal. Through wireless communication module 10 and mobile terminal communication connection, the video signal with mobile terminal transmits to wireless projector and shows or throws the content of display with mobile terminal through wireless projector machine, in addition through infrared induction module response when sensing the object that is close to wireless projector camera lens position, in time close wireless projector's ray apparatus.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A wireless projector control circuit, comprising:
the wireless communication module is configured to receive a video signal sent by the mobile terminal;
an audio circuit configured to receive and process an input audio signal;
the infrared sensing module is configured to sense an object close to the lens of the wireless projector and output a sensing signal when sensing the object;
the main controller is connected with the wireless communication module, the audio circuit and the infrared sensing module, converts the video signal to be projected on a screen, and closes the wireless projector according to the sensing signal;
and the interface module is connected with the main controller and is configured to receive an external signal.
2. The wireless projector control circuit as claimed in claim 1, wherein the audio circuit comprises an audio plug and a power amplification chip; the power amplification chip is connected with the audio plug and the main controller, and is configured to amplify the audio signal input by the audio plug.
3. The wireless projector control circuit of claim 1 further comprising a reset circuit coupled to the master controller configured to reset the system.
4. The wireless projector control circuit as recited in claim 1, wherein the interface module comprises a USB interface and an HDMI interface, both of which are connected to the host controller.
5. The wireless projector control circuit as recited in claim 4, wherein the USB interface is a USB-a type interface configured to interface with an external smart terminal for data exchange with and charging of the smart terminal.
6. The wireless projector control circuit of claim 1, wherein the interface module comprises a Type-C interface and a signal conversion chip; the signal conversion chip is connected in Type-C interface with between the main control unit, configure to will the USB signal of Type-C interface output converts the HDMI signal into.
7. The wireless projector control circuit as recited in claim 1, wherein the wireless communication module is a WiFi module.
8. The wireless projector control circuit of claim 7 wherein the WiFi module comprises an antenna, a 2.4G chip, a 5G chip, and a switch module; the antenna with the 2.4G chip and the 5G chip is connected, the 2.4G chip with main control unit connects, the 5G chip passes through switch module with main control unit connects.
9. The control circuit of claim 8, wherein the switch module comprises a MOS transistor, a source of the MOS transistor is connected to a DC power supply, a drain of the MOS transistor is connected to a power supply terminal of the 5G chip, and a gate of the MOS transistor is connected to the main controller.
10. A wireless projector, characterized in that the wireless projector comprises: the wireless projector control circuit of any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920960283.2U CN209861058U (en) | 2019-06-21 | 2019-06-21 | Wireless projector and control circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920960283.2U CN209861058U (en) | 2019-06-21 | 2019-06-21 | Wireless projector and control circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209861058U true CN209861058U (en) | 2019-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920960283.2U Active CN209861058U (en) | 2019-06-21 | 2019-06-21 | Wireless projector and control circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209861058U (en) |
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2019
- 2019-06-21 CN CN201920960283.2U patent/CN209861058U/en active Active
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