CN211508715U

CN211508715U - Multi-functional controlling means all the way

Info

Publication number: CN211508715U
Application number: CN202020120461.3U
Authority: CN
Inventors: 刘安荣
Original assignee: Nanjing Youweishi Optoelectronics Technology Co ltd
Current assignee: Nanjing Youweishi Optoelectronics Technology Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-09-15
Anticipated expiration: 2030-01-19

Abstract

The utility model discloses a multi-functional controlling means all the way, including the singlechip, the singlechip is connected with the input of CMOS bus transceiver, the output of CMOS bus transceiver is connected with the switching module, the singlechip still is connected with RTWC wireless transceiver, RTWC wireless transceiver communicates with the touch-sensitive screen through the wireless mode, the singlechip still is connected with RS-232 module; this multifunctional control device connects two video matrixes through the switching module simultaneously, only one video matrix is in operating condition at ordinary times, another is in the cold standby state, when No. 1 video matrix trouble, can't normally work, switch to another No. 2 video matrix, No. 2 video matrix operation, No. 1 matrix can be followed the system separation, maintains, former control code also sends former control code to No. 2 matrixes along with switching change automatically, whole switching process is accomplished in 1 second.

Description

Multi-functional controlling means all the way

Technical Field

The utility model relates to a video signal matrix field, in particular to multi-functional control device that video signal matrix was used.

Background

The matrix is provided with a large number of interfaces, so that more than one hour is often required when the matrix is installed, and therefore, if the matrix is broken during a meeting, all equipment connected with the matrix is paralyzed, and the equipment cannot be repaired or replaced in a short time, so that the meeting must be suspended or even replaced, and therefore, a matrix backup device is necessary to be arranged for the matrix. The matrix backup device realizes the instant conversion from a working matrix to another matrix, realizes the conversion of the matrix and completely ensures the normal operation of the conference.

The existing matrix backup device has a single communication mode and can be used only by connecting a plurality of wires, and the video matrix has a plurality of wiring lines, so that the installation is troublesome and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to solve current video matrix backup device function singleness, the trouble problem of installation, the utility model provides a multi-functional, the simple multi-functional control device of wiring.

In order to realize the purpose, the utility model provides a technical scheme is: the utility model provides a multi-functional control device all the way, includes the singlechip, the singlechip is connected with CMOS bus transceiver's input, CMOS bus transceiver's output is connected with the switching module, the singlechip still is connected with RTWC wireless transceiver, RTWC wireless transceiver and touch-sensitive screen carry out the communication through wireless mode, the singlechip still is connected with the RS-232 module.

In the above technical solution, the switching module includes a relay with two selection channels, and the relay is connected with the CMOS bus transceiver through a triode.

On the basis of the technical scheme, the RTWC wireless transceiver comprises a WIFI module, and the WIFI module is connected with a network isolation transformer.

As a preferred technical solution, the network isolation transformer includes an HR911105A chip, and the HR911105A chip is connected to the WIFI module.

In the above technical solution, preferably, the CMOS bus transceiver includes a 74HC245 chip, an input end of the 74HC245 chip is connected to the single chip, and an output end of the 74HC245 chip is connected to the switching module.

Further preferably, the single chip microcomputer is an STM32 series single chip microcomputer.

Preferably, the RS-232 module includes a MAX232 chip, and the MAX232 chip is connected to the single chip microcomputer.

The utility model discloses beneficial effect for prior art is: this multifunctional control device connects two video matrixes through the switching module simultaneously, only one video matrix is in operating condition at ordinary times, another is in the cold standby state, when No. 1 video matrix trouble, can't normally work, switch to another No. 2 video matrix, No. 2 video matrix operation, No. 1 matrix can be followed the system separation, maintains, former control code also sends former control code to No. 2 matrixes along with switching change automatically, whole switching process is accomplished in 1 second.

Drawings

FIG. 1 is a schematic circuit diagram of a single-chip microcomputer;

FIG. 2 is a circuit schematic of a CMOS bus transceiver;

FIG. 3 is a circuit schematic of a switching module;

fig. 4 is a circuit schematic diagram of a WIFI module;

FIG. 5 is a circuit schematic of a network isolation transformer;

fig. 6 is a circuit schematic of an RS-232 module.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The utility model provides a multi-functional controlling means all the way, including the singlechip, in this embodiment, the singlechip adopts the model to be STM32F103R8T 6's singlechip, and this singlechip is the embedded treater of 32 latest bits, and processing speed can reach 257MHZ, and its peripheral circuit is shown as figure 1, just no longer gives details here, in addition, needs to explain, though the singlechip in this embodiment adopts the singlechip of this model, nevertheless the utility model discloses a protection scope is not limited to this, and the singlechip of other models or the microprocessor the same with the singlechip function all are in the utility model discloses a protection scope.

As shown in fig. 2, in this embodiment, the CMOS bus transceiver adopts a 74HC245 chip, an input end of the 74HC245 chip is connected to an I/O port of the single chip, and the 74HC245 is a high-speed CMOS bus transceiver (bus transceiver) compatible with a pin of a TTL device, a typical CMOS type tri-state buffer gate circuit, and an eight-path signal transceiver. Because the data/address/control bus port of the single chip or CPU has a certain load capacity, if the load exceeds the load capacity, a driver is generally added. The method is mainly applied to large-screen display and other consumer electronic products to increase driving.

The output terminal of the 74HC245 chip is connected to a switching module, as shown in fig. 3, the switching module includes a relay K1 with dual selection channels, the relay is connected to the pin B0 of the 74HC245 chip through a transistor Q9, and the relay K1 has two output pins, which are respectively connected to a video matrix and simultaneously connected to two matrices. At ordinary times, only one matrix is in a working state, and the other matrix is in a cold standby state. When the No. 1 matrix fails and cannot work normally. And manually switching to another matrix No. 2, operating the matrix No. 2, and separating the matrix No. 1 from the system for maintenance.

The single chip microcomputer is further connected with an RTWC wireless transceiver, the RTWC wireless transceiver communicates with the touch screen in a wireless mode, the RTWC wireless transceiver comprises a WIFI module, and the WIFI module is connected with a network isolation transformer. As shown in fig. 4, in the WIFI chip manufactured by marvell corporation of WIFI module in this embodiment, a specific model may adopt 88W8801, the starting time of the WIFI module is 6S, and the IPAD can be quickly accessed, as shown in fig. 5, the network isolation transformer includes an HR911105A chip, the HR911105A chip is connected to the 88W8801, and the network isolation transformer is mainly used for signal level coupling. Not only can strengthen the signal, make its transmission distance farther, make chip end and outside isolation moreover, the interference killing feature strengthens greatly, has increased very big guard action (such as thunderbolt) to the chip moreover, in addition, when receiving the net gape of different levels (such as some PHY chips are 2.5V, some PHY chips are 3.3V), can not cause the influence to equipment each other. The safety of the whole system is greatly enhanced.

In addition, the single chip microcomputer is also connected with an RS-232 module, as shown in FIG. 6, the RS-232 module adopts an MAX232 chip, and the MAX232 chip is connected with an I/O port of the single chip microcomputer.

The multifunctional controller is convenient and quick, video matrix switching is realized by one key, and the conference is ensured to be normally carried out within 1 second. After the video matrix backup device is connected, the video matrix in work can be switched with the video matrix in the cold standby state only by pressing one button, so that the conference can be smoothly carried out. And moreover, the method is safe and reliable, and can store the original codes of the video matrix in real time to ensure that data is not lost (most 8-system codes).

And backing up codes in the matrix in use, and automatically sending the original control codes to the No. 2 matrix along with the change of the original control codes along with the switching of the video matrix.

Because only one working matrix is needed, and one matrix is broken, the matrix can be detached at any time for maintenance, and the conference can not be influenced.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides a multi-functional controlling means all the way, includes the singlechip, its characterized in that: the single chip microcomputer is connected with the input end of the CMOS bus transceiver, the output end of the CMOS bus transceiver is connected with the switching module, the single chip microcomputer is further connected with an RTWC wireless transceiver, the RTWC wireless transceiver is in wireless communication with the touch screen, and the single chip microcomputer is further connected with an RS-232 module.

2. A multifunction control device as claimed in claim 1, wherein: the switching module comprises a relay with double selection channels, and the relay is connected with the CMOS bus transceiver through a triode.

3. A multifunction control device as claimed in claim 1, wherein: the RTWC wireless transceiver comprises a WIFI module, and the WIFI module is connected with a network isolation transformer.

4. A multifunction control device as claimed in claim 3, wherein: the network isolation transformer comprises an HR911105A chip, and the HR911105A chip is connected with the WIFI module.

5. A multifunction control device as claimed in claim 1, wherein: the CMOS bus transceiver comprises a 74HC245 chip, wherein the input end of the 74HC245 chip is connected with the single chip microcomputer, and the output end of the 74HC245 chip is connected with the switching module.

6. A multifunction control device as claimed in claim 1, wherein: the single chip microcomputer adopts STM32 series single chip microcomputers.

7. A multifunction control device as claimed in claim 1, wherein: the RS-232 module comprises a MAX232 chip, and the MAX232 chip is connected with the single chip microcomputer.