Emerson 5X00070G01 模拟输入模块  I/O 总线终端器

Emerson 5X00070G01 模拟输入模块  I/O 总线终端器

系统实时接收键盘、鼠标命令，向计算机主机进行转发，实现键盘、鼠标正常信息输入;在外部设备的控制下自动完成键盘、鼠标信息传输通道切换，并接收外部设备发送的指示信息，模拟生成计算机主机可以接收的信息并按照设计的时序发送至计算机主机，实现远程设备信息中各项参数的模拟键人;实现参数键入后，及时将控制权交还给键盘、鼠标，恢复正常操控功能。

远程设备信息自动翰入转换系统可采用成熟的接口电路技术，以ARM为主控芯片，结合串口控制芯片、DC、DC电源转换模块、继电器芯片等一些专用接口芯片和外围电路实现。远程设备信息自动输入转换系统逻辑原理图如图2所示。

在键盘、鼠标模拟器中，ARM作为主控芯片完成远程设备信息的接收和发送应答，实现键盘、鼠标输人的切换，并把远程设备信息模拟转发给本地计算机。

系统在不通电的情况下，键盘输人和模拟键盘输出直接连通，当外部设备输入信息后，切换继电器输出引脚，实现远程设备信息解析并按照PS/2协议转发给本地计算机。信息发送完毕后，切换继电器，恢复键盘输入和模拟键盘输出直接连通状态。键盘输入和模拟键盘输出同时通过继电器切换和ARM芯片连接，实现信息的转发。

Emerson 5X00070G01 模拟输入模块  I/O 总线终端器

The system receives keyboard and mouse commands in real time and forwards them to the computer host to realize the normal input of keyboard and mouse information. Under the control of the external device, the keyboard and mouse information transmission channels are switched automatically, and the instructions sent by the external device are received. The information that can be received by the computer host is generated and sent to the computer host according to the designed time sequence to realize the simulation of various parameters in the remote device information; After the parameter is typed, the control is returned to the keyboard and mouse in time to restore the normal control function.

The automatic recording and conversion system of remote device information can adopt mature interface circuit technology, which takes ARM as the main control chip and combines some special interface chips and peripheral circuits such as serial control chip, DC, DC power conversion module and relay chip. The logic diagram of the remote device information automatic input conversion system is shown in Figure 2.

In the keyboard and mouse simulator, ARM as the main control chip completes the receiving and sending of remote device information, realizes the switch of keyboard and mouse input, and simulates the remote device information to the local computer.

When the system is not powered on, the keyboard input and analog keyboard output are directly connected, when the external device input information, switch the relay output pin, realize the remote device information analysis and forward to the local computer according to the PS/2 protocol. After the information is sent, switch the relay to restore the direct connection between the keyboard input and the analog keyboard output. Keyboard input and analog keyboard output are simultaneously connected through relay switching and ARM chip to realize information forwarding.

Emerson 5X00070G01 模拟输入模块  I/O 总线终端器

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