CN210431622U - Multimedia network central control system - Google Patents
Multimedia network central control system Download PDFInfo
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- CN210431622U CN210431622U CN201921521856.8U CN201921521856U CN210431622U CN 210431622 U CN210431622 U CN 210431622U CN 201921521856 U CN201921521856 U CN 201921521856U CN 210431622 U CN210431622 U CN 210431622U
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Abstract
The utility model discloses a multimedia network central control system, which comprises a case, a control circuit board, a USB board, a power amplifier multi-serial port control board, a switching unit board, a power supply board and a relay, wherein the control circuit board, the USB board, the power amplifier multi-serial port control board, the switching unit board, the power supply board and the relay are fixed in the case; the control circuit board is composed of a quad-core high-frequency ARM framework CPU, the control circuit board is respectively connected with the switching unit, the USB board, the power amplifier multi-serial-port control board, the power board and the relay, the power board converts an input power supply into appropriate voltage to supply power for the control circuit board and the relay, the control circuit board controls the relay switch and the USB board to switch and follow through control IO, a control command is sent to the switching unit board through control I2C, and the control command is sent to the power amplifier multi-serial-port control board through control I2C and I2C. The utility model discloses can satisfy multimedia control's application, adapt to the demand of future classroom development.
Description
Technical Field
The utility model relates to a center control system especially indicates a multimedia network center control system.
Background
In the future, multimedia control in classrooms is the most basic application, and video coding and decoding, digital and analog signal cross multiplexing, multi-signal recording, wireless screen projection, cloud desktop and internet of things control are the directions of classroom informatization development. The current multimedia network central control system has the management control function of multimedia equipment and can be controlled in a networked and centralized manner. However, the existing technical solution adopts a low-frequency ARM architecture, has no operation interface system, has no flexible configuration function, can only meet the application of multimedia control, and no longer meets the requirement of future classroom development.
SUMMERY OF THE UTILITY MODEL
The utility model provides a multimedia network center control system has solved the ARM framework that adopts the low frequency among the prior art, does not have operating interface system, does not have nimble configuration function, only can satisfy multimedia control's application, no longer adapts to the problem of the demand of future classroom development.
The technical scheme of the utility model is realized like this:
a multimedia network central control system comprises a case, a control circuit board, a USB board, a power amplifier multi-serial port control board, a switching unit board, a power supply board and a relay, wherein the control circuit board, the USB board, the power amplifier multi-serial port control board, the switching unit board, the power supply board and the relay are fixed in the case; the control circuit board is composed of a quad-core high-frequency ARM framework CPU, the control circuit board is connected with a switching unit, a USB board, a power amplifier multi-serial-port control board, a power board and a relay respectively, an input power source is converted into appropriate voltage by the power board to supply power for the control circuit board and the relay, the control circuit board controls the relay switch and the USB board to switch and follow through controlling IO, sends a control command to the switching unit board through controlling I2C, and sends the control command to the power amplifier multi-serial-port control board through controlling I2C and I2C.
As a preferred embodiment of the utility model, control circuit board adopts four-core high frequency ARM framework RK3288 main chip, and the four-core Cortex-A17 treater including Neon and FPU coprocessor is integrated, embedding BOAWEB small server system.
As a preferred embodiment of the present invention, the input voltage of the power panel is 220V, and the output voltage is 12V and 5V.
As a preferred embodiment of the utility model, the USB board adopts STC15W4K32S4 singlechip, and the singlechip passes through SPI bus and control circuit board communication for switch input device.
As a preferred embodiment of the utility model, power amplifier multiple serial ports control panel includes TI TPA3118 chip and XR21V1414 chip, TI TPA3118 chip is used for exporting two way 50W's audio signal, XR21V1414 chip is used for expanding the multiple serial ports.
As a preferred embodiment of the utility model, the machine case adopts the metal to make, and its back plate is equipped with thing networking interface, HD BaseT interface, HDMI signal output interface, HDMI high definition signal switching interface, power amplifier interface, VGA input and output interface, audio input and output interface, RS232 communication interface, IO input and output interface, relay switch interface, power source.
As a preferred embodiment of the present invention, the side plate of the case is provided with heat dissipation holes.
As an optimized embodiment of the utility model, control circuit board, USB board, power amplifier multiple serial ports control panel, switching unit board, power strip pass through fix with rivet at quick-witted incasement portion.
The beneficial effects of the utility model reside in that: adopt four-core high frequency ARM framework CPU, the I2C, I2S, the IO of internal operation all provides through CPU, realize signal switching through the I2C of control video signal chip, realize relay switch through control IO, realize audio frequency chip volume control through control I2C and I2C, realize USB through control IO and switch and follow, can satisfy multimedia control's application, adapt to the demand of future classroom development.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a circuit block diagram of a multimedia network central control system according to the present invention;
FIG. 2 is a top view of the chassis base;
FIG. 3 is a front view of the chassis base;
FIG. 4 is a rear view of the chassis base;
fig. 5 is a schematic structural view of the chassis cover.
In the figure, 1-control circuit board; 2-USB board; 3-power amplifier multi-serial port control board; 4-switching cell plates; 5, a power panel; 6-relay.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-5, the utility model provides a multimedia network central control system, which comprises a case, wherein the case comprises a case base and a case cover, and a control circuit board 1, a USB board 2, a power amplifier multi-serial port control board 3, a switching unit board 4, a power board 5 and a relay 6 are fixed in the case; control circuit board 1 comprises four nuclear high frequency ARM framework CPU, control circuit board 1 respectively with the switch unit, USB board 2, power amplifier multiple serial ports control panel 3, power strip 5 and relay 6 are connected, power strip 5 converts input power into suitable voltage and supplies power for control circuit board 1 and relay 6, control circuit board 1 switches through control IO control relay 6 switch and USB board 2 and follows, send control command to switch unit board 4 through control I2C, send control command to power amplifier multiple serial ports control panel 3 through control I2C and I2C. A four-core high-frequency ARM architecture CPU is adopted, the BOAWEB small server system is embedded based on android bottom layer development, direct control and all system configuration can be carried out on the product through WEB, and control operation can also be carried out through an external serial port or a network. I2C, I2S and IO of internal operation are all provided by a CPU, signal switching is realized by controlling I2C of a video signal chip, a relay 6 switch is realized by controlling IO, volume adjustment control of an audio chip is realized by controlling I2C and I2C, and USB switching following is realized by controlling IO. And the applications such as audio and video broadcasting, wireless screen projection, video coding and the like are realized through the high-performance ARM core CPU.
As a preferred embodiment of the utility model, control circuit board 1 adopts four-core high frequency ARM framework RK3288 main chip, and the four-core Cortex-A17 treater including Neon and FPU coprocessor is integrated, embedding BOAWEB small server system. The chip integrates a quad-core Cortex-A17 processor including a Neon and FPU coprocessor, sharing a 1MB level two cache. The dual-channel 64-bit DDR3/LPDDR2/LPDDR3 controller provides the memory bandwidth required by high performance and high resolution applications. Address bits in excess of 32 bits can support up to 8GB of access space. Based on the android bottom layer development, a BOAWEB small server system is embedded, the product can be directly controlled and configured by WEB, and control operation can be performed through an external serial port or a network. I2C, I2S and IO of internal operation are all provided by a CPU, signal switching is realized by controlling I2C of a video signal chip, a relay 6 switch is realized by controlling IO, volume adjustment control of an audio chip is realized by controlling I2C and I2C, and USB switching following is realized by controlling IO. THGBMFG7C1LBAIL EMCC, 16GB capacity is adopted for storing an android operating system, and 4 NT5CC256M16ER DDR3 pieces are adopted. Through the communication of I2C and HDMI video switching unit, realize unique HDMI video switching function, realize the seamless switching of video resource. Through the communication of I2C and audio chip, realize switching and audio mixing to each way input audio signal, and volume control.
As a preferred embodiment of the present invention, the input voltage of the power supply board 5 is 220V, and the output voltage is 12V and 5V. The output of 12V and 5V is realized, and power is supplied to a CPU; the CPU realizes the control of 4 paths of relays 6 through the IO port, and can be respectively provided for a projection screen, a projector and a computer, thereby realizing the automatic control of peripheral equipment.
As an optimized embodiment of the utility model, USB board 2 adopts STC15W4K32S4 singlechip, and the singlechip passes through SPI bus and 1 communication of control circuit board for switch input device. And mouse switching of PC, notebook, expansion 1 and expansion 2 input devices is realized.
As a preferred embodiment of the utility model, power amplifier multiple serial ports control panel 3 includes TI TPA3118 chip and XR21V1414 chip, and TI TPA3118 chip is used for exporting two way 50W's audio signal, and XR21V1414 chip is used for the multiple serial ports extension. And an XR21V1414 chip is adopted to expand a single-path USB port of the CPU into a plurality of serial ports, so that the connection of a communication port of external equipment is met.
As a preferred embodiment of the utility model, the machine case adopts the metal to make, and its back plate is equipped with thing networking interface, HD BaseT interface, HDMI signal output interface, HDMI high definition signal switching interface, power amplifier interface, VGA input and output interface, audio input and output interface, RS232 communication interface, IO input and output interface, 6 switch interfaces of relay, power source. The side plate of the case is provided with heat dissipation holes.
As an preferred embodiment of the utility model, control circuit board 1, USB board 2, power amplifier multiple serial ports control panel 3, switch unit board 4, power strip 5 pass through fix with rivet inside quick-witted incasement portion.
The utility model discloses a four nuclear high frequency ARM framework CPU, the I2C of internal operation, I2S, IO all provides through CPU, I2C through the control video signal chip realizes the signal switching, realize the relay 6 switch through the control IO, realize audio frequency chip volume control through control I2C and I2C, realize USB through the control IO and switch and follow, can satisfy multimedia control's application, adapt to the demand of future classroom development. Through a high-performance chip, the intelligent terminal device is used for realizing multimedia management and control, video interaction, wireless screen projection, IP broadcasting, recorded broadcasting, Internet of things management and control, a cloud desktop, an audio power amplifier, a network switch, a USB switcher, a power supply chronograph, RS232 serial port communication, a relay 6 switch and the like.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a multimedia network center control system, includes quick-witted case, its characterized in that: a control circuit board, a USB board, a power amplifier multi-serial port control board, a switching unit board, a power supply board and a relay are fixed in the case; the control circuit board is composed of a quad-core high-frequency ARM framework CPU, the control circuit board is connected with a switching unit, a USB board, a power amplifier multi-serial-port control board, a power board and a relay respectively, an input power source is converted into appropriate voltage by the power board to supply power for the control circuit board and the relay, the control circuit board controls the relay switch and the USB board to switch and follow through controlling IO, sends a control command to the switching unit board through controlling I2C, and sends the control command to the power amplifier multi-serial-port control board through controlling I2C and I2C.
2. The multimedia network central control system according to claim 1, wherein: the control circuit board adopts a four-core high-frequency ARM framework RK3288 main chip, integrates a four-core Cortex-A17 processor including a Neon coprocessor and an FPU coprocessor, and is embedded into a BOAWEB small server system.
3. The multimedia network central control system according to claim 2, wherein: the input voltage of the power panel is 220V, and the output voltage is 12V and 5V.
4. The multimedia network central control system according to claim 1 or 2, characterized in that: the USB board adopts STC15W4K32S4 singlechip, and the singlechip passes through SPI bus and control circuit board communication for switch input device.
5. The multimedia network central control system according to claim 1 or 2, characterized in that: the power amplifier multi-serial port control board comprises a TITPA3118 chip and an XR21V1414 chip, wherein the TITPA3118 chip is used for outputting two paths of 50W audio signals, and the XR21V1414 chip is used for expanding multi-serial ports.
6. The multimedia network central control system according to claim 1, wherein: the case is made of metal, and the rear board of the case is provided with an Internet of things interface, an HD BaseT interface, an HDMI signal output interface, an HDMI high-definition signal switching interface, a power amplifier interface, a VGA input and output interface, an audio input and output interface, an RS232 communication interface, an IO input and output interface, a relay switch interface and a power supply interface.
7. The multimedia network central control system according to claim 1, wherein: the side plate of the case is provided with heat dissipation holes.
8. The multimedia network central control system according to claim 1, wherein: the control circuit board, the USB board, the power amplifier multi-serial port control board, the switching unit board and the power supply board are fixed inside the case through rivets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921521856.8U CN210431622U (en) | 2019-09-12 | 2019-09-12 | Multimedia network central control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921521856.8U CN210431622U (en) | 2019-09-12 | 2019-09-12 | Multimedia network central control system |
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| Publication Number | Publication Date |
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| CN210431622U true CN210431622U (en) | 2020-04-28 |
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| CN201921521856.8U Active CN210431622U (en) | 2019-09-12 | 2019-09-12 | Multimedia network central control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115914509A (en) * | 2022-11-10 | 2023-04-04 | 贵州电网有限责任公司 | Video and network automatic detection switching system based on PCB |
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2019
- 2019-09-12 CN CN201921521856.8U patent/CN210431622U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115914509A (en) * | 2022-11-10 | 2023-04-04 | 贵州电网有限责任公司 | Video and network automatic detection switching system based on PCB |
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