基于开关矩阵的多通道信号切换设备研制

The Development of Multi-channel Signal Switching Device Based on Switch Array

摘要:

为提高多通道信号系统的硬件资源利用率和信道切换效率,使用AD75019型宽信号范围模拟开关矩阵为核心设计了一款信号切换设备。实现了32输入至32输出通道之间任意组合的连接和切换,配置完成后的通道切换响应时间小于100ms。设备支持外接电源和内置电池的双电源供电模式,并可通过触摸式液晶屏完成通道间连接状态的配置,确保了设备使用的便利性和灵活性。同时接口采用了高密度接插件进一步减小了设备的体积和重量,提高了设备的便携性。测试试验证明,信号切换设备避免了多通道信号系统中整理线缆和插拔接口的工作,能够显著的提高系统的信道切换效率和配对可靠性,可广泛应用于大型测量、控制和试验系统中。

Abstract:

To improve the hardware resource utilization and channel switching efficiency of multi-channel signal system, a signal switching device using the wide signal range analog switch array AD75019 as core component has been designed. It implements any connection and switch between 32 input channels to 32 output channels can be made by this device, and the channel switching response time is less than 100 ms after completing the channels connection configuration. This device supports the dual power supply mode of external power source and built-in rechargeable battery, and can configure the connection state between channels through the touch liquid crystal display screen, which ensure the convenience and flexibility of the device. Meanwhile, a high density connector was used to further reduce the volume and weight of the device, which also improve the portability of the device. The test results showed that the signal switching device avoided the work of sorting out the cable and plug/unplug the interface in the multi-channel signal system, which significantly improved the channel switching efficiency and pairing reliability of the system. This device can be widely used in large-scale measurement, control and test systems.