Process Data Acquisition – PLC -- Detailed
analysis of quality manage&industrial big data sources |
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56 PDA
system scheme for converter, RH furnace, LF furnace in steel plant |
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59
USB HID
The USB HID class is a standard device class for USB devices, which includes a wide range of devices. HID devices are defined as devices that belong to human-computer interaction operations, used to control some aspects of computer operations, such as USB mice, USB keyboards, USB game joysticks, etc. However, HID devices do not necessarily need to have a human-machine interface. Any device that meets the HID category specification is an HID device. One advantage of USB HID devices is that the operating system comes with HID class drivers, and users do not need to develop drivers. They can communicate using API system calls. Low speed devices (LS): maximum packet length of 8 bytes. Full speed device (FS): maximum packet length of 64 bytes. High speed equipment (HS): maximum packet length of 1024 bytes, STM32+USB3300(Microchip) is achievable. The data source type is 69,
usually a full speed device, which is a powerful tool for debugging
microcontroller programs. PDA supports automatic recovery after plugging and
unplugging, it is necessary to know the USB device name, Vendor ID (0x |
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Apparatus test&Fault diagnosis&Quality analysis |
Millisecond data sampling Real-time data compression Capture signal instantaneous mutation |
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Develop communication protocol, Customized
analysis function, XinChuang domestic obsession
PDAServer
PDAClient