区分了虚拟仪器中的八通阀和电磁阀，添加了两个阀门的驱动

unilabos/devices/virtual/virtual_multiway_valve.py

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+import time
+from typing import Union
+
+
+class VirtualMultiwayValve:
+    """
+    虚拟八通阀门 - 可将一个输入切换到8个输出中的任意一个
+    """
+    def __init__(self, port: str = "VIRTUAL", positions: int = 8):
+        self.port = port
+        self.max_positions = positions
+        
+        # 状态属性
+        self._status = "Idle"
+        self._valve_state = "Ready"
+        self._current_position = 1
+        self._target_position = 1
+
+    @property
+    def status(self) -> str:
+        return self._status
+
+    @property
+    def valve_state(self) -> str:
+        return self._valve_state
+
+    @property
+    def current_position(self) -> int:
+        return self._current_position
+
+    @property
+    def target_position(self) -> int:
+        return self._target_position
+
+    def get_current_position(self) -> int:
+        """获取当前阀门位置"""
+        return self._current_position
+
+    def set_position(self, position: Union[int, str]):
+        """
+        设置阀门位置
+        
+        Args:
+            position: 目标位置 (1-8)
+        """
+        try:
+            pos = int(position)
+            if pos < 1 or pos > self.max_positions:
+                raise ValueError(f"Position must be between 1 and {self.max_positions}")
+            
+            self._status = "Busy"
+            self._valve_state = "Moving"
+            self._target_position = pos
+            
+            # 模拟阀门切换时间
+            switch_time = abs(self._current_position - pos) * 0.5  # 每个位置0.5秒
+            time.sleep(switch_time)
+            
+            self._current_position = pos
+            self._status = "Idle"
+            self._valve_state = "Ready"
+            
+            return f"Position set to {pos}"
+            
+        except ValueError as e:
+            self._status = "Error"
+            self._valve_state = "Error"
+            return f"Error: {str(e)}"
+
+    def open(self):
+        """打开阀门 - 对于多通阀门，相当于设置到位置1"""
+        return self.set_position(1)
+
+    def close(self):
+        """关闭阀门 - 对于多通阀门，相当于设置到关闭位置"""
+        self._status = "Busy"
+        self._valve_state = "Closing"
+        time.sleep(0.5)
+        
+        self._current_position = 0  # 0表示关闭状态
+        self._status = "Idle"
+        self._valve_state = "Closed"
+        
+        return "Valve closed"
+
+    def get_valve_position(self) -> int:
+        """获取阀门位置 - 兼容性方法"""
+        return self._current_position
+
+    def is_at_position(self, position: int) -> bool:
+        """检查是否在指定位置"""
+        return self._current_position == position
+
+    def get_available_positions(self) -> list:
+        """获取可用位置列表"""
+        return list(range(1, self.max_positions + 1))
+
+    def reset(self):
+        """重置阀门到初始位置"""
+        return self.set_position(1)
+
+    def get_info(self) -> dict:
+        """获取阀门信息"""
+        return {
+            "port": self.port,
+            "max_positions": self.max_positions,
+            "current_position": self._current_position,
+            "target_position": self._target_position,
+            "status": self._status,
+            "valve_state": self._valve_state
+        }