diff --git a/backend/config.ini b/backend/config.ini
index 35d88621..149d17f0 100644
--- a/backend/config.ini
+++ b/backend/config.ini
@@ -29,8 +29,8 @@ fourcc = MJPG
 backend = directshow
 
 [CAMERA2]
-enable = False
-device_index = 2
+enable = True
+device_index = 1
 width = 1280
 height = 720
 fps = 30
diff --git a/backend/devices/device_coordinator.py b/backend/devices/device_coordinator.py
index de3f70d9..6f66d0c6 100644
--- a/backend/devices/device_coordinator.py
+++ b/backend/devices/device_coordinator.py
@@ -849,12 +849,20 @@ class DeviceCoordinator:
                             self.logger.warning(f"设备 {device_name} 连接丢失")
                             self.stats['device_errors'][device_name] += 1
                             
+                            if self.stats['reconnect_attempts'][device_name] >= 3:
+                                continue
+                            
                             now = time.time()
-                            if now - self._last_restart_ts[device_name] >= 15.0:
+                            if now - self._last_restart_ts[device_name] >= 50.0:
                                 self._last_restart_ts[device_name] = now
                                 self.logger.info(f"尝试重连设备: {device_name}")
                                 if self.restart_device(device_name):
                                     self.stats['device_errors'][device_name] = 0
+                                    self.stats['reconnect_attempts'][device_name] = 0
+                                else:
+                                    self.stats['reconnect_attempts'][device_name] += 1
+                                    if self.stats['reconnect_attempts'][device_name] >= 3:
+                                        self.logger.error(f"设备 {device_name} 重连失败已达3次，停止自动重试")
                                     
                     except Exception as e:
                         self.logger.error(f"检查设备 {device_name} 状态异常: {e}")
diff --git a/backend/devices/device_model.py b/backend/devices/device_model.py
index 20d7a110..18e76059 100644
--- a/backend/devices/device_model.py
+++ b/backend/devices/device_model.py
@@ -33,6 +33,37 @@ class DeviceModel:
         self.isOpen = False
         self.callback_method = callback_method
         self.deviceData = {}
+        self._battery_ts = 0.0
+
+    @staticmethod
+    def _battery_percent_from_reg(reg_value: int) -> int:
+        try:
+            v = int(reg_value)
+        except Exception:
+            return 0
+        if v > 396:
+            return 100
+        if v >= 393:
+            return 90
+        if v >= 387:
+            return 75
+        if v >= 382:
+            return 60
+        if v >= 379:
+            return 50
+        if v >= 377:
+            return 40
+        if v >= 373:
+            return 30
+        if v >= 370:
+            return 20
+        if v >= 368:
+            return 15
+        if v >= 350:
+            return 10
+        if v >= 340:
+            return 5
+        return 0
 
     # region 获取设备数据 Obtain device data
     # 设置设备数据 Set device data
@@ -71,34 +102,59 @@ class DeviceModel:
             notify_characteristic = None
 
             self.logger.info("正在匹配服务...")
-            services = None
-            for _ in range(3):
+            await asyncio.sleep(0.3)
+            services = []
+            for i in range(10):
+                tmp_services = None
                 get_services = getattr(client, 'get_services', None)
                 if callable(get_services):
-                    services = await get_services()
-                else:
+                    try:
+                        tmp_services = await get_services()
+                    except Exception:
+                        tmp_services = None
+                if not tmp_services:
                     backend = getattr(client, "_backend", None)
                     backend_get_services = getattr(backend, "get_services", None)
                     if callable(backend_get_services):
-                        services = await backend_get_services()
-                    else:
-                        services = getattr(client, 'services', None)
-                if services:
+                        try:
+                            tmp_services = await backend_get_services()
+                        except Exception:
+                            tmp_services = None
+                if not tmp_services:
+                    tmp_services = getattr(client, 'services', None)
+
+                try:
+                    services = list(tmp_services) if tmp_services else []
+                except Exception:
+                    services = []
+
+                for service in services:
+                    try:
+                        svc_uuid = str(getattr(service, "uuid", "") or "").lower()
+                    except Exception:
+                        svc_uuid = ""
+                    if svc_uuid == str(target_service_uuid).lower():
+                        self.logger.info(f"匹配到服务: {service}")
+                        self.logger.info("正在匹配特征...")
+                        chars = []
+                        try:
+                            chars = list(getattr(service, "characteristics", None) or [])
+                        except Exception:
+                            chars = []
+                        for characteristic in chars:
+                            try:
+                                chr_uuid = str(getattr(characteristic, "uuid", "") or "").lower()
+                            except Exception:
+                                chr_uuid = ""
+                            if chr_uuid == str(target_characteristic_uuid_read).lower():
+                                notify_characteristic = characteristic
+                            if chr_uuid == str(target_characteristic_uuid_write).lower():
+                                self.writer_characteristic = characteristic
+                        if notify_characteristic:
+                            break
+                if notify_characteristic:
                     break
-                await asyncio.sleep(0.2)
-            if not services:
-                services = []
-            for service in services:
-                if service.uuid == target_service_uuid:
-                    self.logger.info(f"匹配到服务: {service}")
-                    self.logger.info("正在匹配特征...")
-                    for characteristic in service.characteristics:
-                        if characteristic.uuid == target_characteristic_uuid_read:
-                            notify_characteristic = characteristic
-                        if characteristic.uuid == target_characteristic_uuid_write:
-                            self.writer_characteristic = characteristic
-                    if notify_characteristic:
-                        break
+                await asyncio.sleep(0.2 + i * 0.1)
 
             if notify_characteristic:
                 self.logger.info(f"匹配到特征: {notify_characteristic}")
@@ -110,14 +166,33 @@ class DeviceModel:
                 # 保持连接打开 Keep connected and open
                 try:
                     while self.isOpen:
+                        try:
+                            if not bool(getattr(client, "is_connected", False)):
+                                self.isOpen = False
+                                break
+                        except Exception:
+                            self.isOpen = False
+                            break
                         await asyncio.sleep(1)
                 except asyncio.CancelledError:
                     pass
                 finally:
                     # 在退出时停止通知 Stop notification on exit
-                    await client.stop_notify(notify_characteristic.uuid)
+                    try:
+                        await client.stop_notify(notify_characteristic.uuid)
+                    except Exception:
+                        pass
             else:
-                self.logger.warning("未找到匹配的服务或特征")
+                try:
+                    svc_list = []
+                    for s in services:
+                        try:
+                            svc_list.append(str(getattr(s, "uuid", "") or ""))
+                        except Exception:
+                            pass
+                    self.logger.warning(f"未找到匹配的服务或特征，可用服务: {svc_list}")
+                except Exception:
+                    self.logger.warning("未找到匹配的服务或特征")
                 raise RuntimeError("未找到匹配的服务或特征")
 
     # 关闭设备  close Device
@@ -134,24 +209,41 @@ class DeviceModel:
             if len(self.TempBytes) == 1 and self.TempBytes[0] != 0x55:
                 del self.TempBytes[0]
                 continue
-            if len(self.TempBytes) == 2 and self.TempBytes[1] != 0x61:
-                del self.TempBytes[0]
-                continue
             if len(self.TempBytes) == 20:
                 self.processData(self.TempBytes)
                 self.TempBytes.clear()
 
     # 数据解析 data analysis
     def processData(self, Bytes):
-        if Bytes[1] != 0x61:
+        if Bytes[1] == 0x61:
+            AngX = self.getSignInt16(Bytes[15] << 8 | Bytes[14]) / 32768 * 180
+            AngY = self.getSignInt16(Bytes[17] << 8 | Bytes[16]) / 32768 * 180
+            AngZ = self.getSignInt16(Bytes[19] << 8 | Bytes[18]) / 32768 * 180
+            self.set("AngX", round(AngX, 3))
+            self.set("AngY", round(AngY, 3))
+            self.set("AngZ", round(AngZ, 3))
+            self.callback_method(self)
+            return
+
+        if Bytes[1] == 0x71:
+            start_reg = int(Bytes[2])
+            regs = []
+            for i in range(8):
+                base = 4 + i * 2
+                if base + 1 >= len(Bytes):
+                    break
+                regs.append(int(Bytes[base]) | (int(Bytes[base + 1]) << 8))
+            for idx, val in enumerate(regs):
+                self.set(f"Reg_{start_reg + idx:02X}", val)
+            if regs and start_reg == 0x64:
+                raw = int(regs[0])
+                self.set("BatteryRaw", raw)
+                self.set("BatteryVoltage", round(raw / 100.0, 2))
+                self.set("BatteryPercent", int(self._battery_percent_from_reg(raw)))
+                self._battery_ts = time.time()
+                self.set("BatteryTS", self._battery_ts)
+            self.callback_method(self)
             return
-        AngX = self.getSignInt16(Bytes[15] << 8 | Bytes[14]) / 32768 * 180
-        AngY = self.getSignInt16(Bytes[17] << 8 | Bytes[16]) / 32768 * 180
-        AngZ = self.getSignInt16(Bytes[19] << 8 | Bytes[18]) / 32768 * 180
-        self.set("AngX", round(AngX, 3))
-        self.set("AngY", round(AngY, 3))
-        self.set("AngZ", round(AngZ, 3))
-        self.callback_method(self)
 
     # 获得int16有符号数 Obtain int16 signed number
     @staticmethod
@@ -175,6 +267,26 @@ class DeviceModel:
         # 封装读取指令并向串口发送数据 Encapsulate read instructions and send data to the serial port
         await self.sendData(self.get_readBytes(regAddr))
 
+    async def readBattery(self, timeout: float = 2.0):
+        if not bool(self.isOpen):
+            return None
+        client = getattr(self, "client", None)
+        if client is None or not bool(getattr(client, "is_connected", False)):
+            return None
+        prev_ts = float(self.deviceData.get("BatteryTS", 0.0) or 0.0)
+        await self.readReg(0x64)
+        deadline = time.time() + max(0.1, float(timeout))
+        while time.time() < deadline:
+            cur_ts = float(self.deviceData.get("BatteryTS", 0.0) or 0.0)
+            if cur_ts > prev_ts:
+                return {
+                    "raw": self.deviceData.get("BatteryRaw"),
+                    "voltage": self.deviceData.get("BatteryVoltage"),
+                    "percent": self.deviceData.get("BatteryPercent"),
+                }
+            await asyncio.sleep(0.05)
+        return None
+
     # 写入寄存器 Write Register
     async def writeReg(self, regAddr, sValue):
         # 解锁 unlock
diff --git a/backend/devices/imu_manager.py b/backend/devices/imu_manager.py
index 54d61e68..bc781a70 100644
--- a/backend/devices/imu_manager.py
+++ b/backend/devices/imu_manager.py
@@ -42,7 +42,9 @@ class BleIMUDevice:
         self._device_model = None
         self._open_task = None
         self._main_task = None
+        self._battery_task = None
         self._last_update_ts = None
+        self._last_ble_device = None
         try:
             from . import device_model as wit_device_model
         except Exception:
@@ -106,7 +108,8 @@ class BleIMUDevice:
                     'pitch': self.last_data['roll']     # pitch 对应俯仰
                 },
                 'temperature': self.last_data.get('temperature', 25.0),
-                'timestamp': datetime.now().isoformat()
+                'timestamp': datetime.now().isoformat(),
+                'battery': self.last_data.get('battery'),
             }
         return self.apply_calibration(raw) if apply_calibration else raw
 
@@ -155,6 +158,14 @@ class BleIMUDevice:
 
     async def _disconnect(self):
         try:
+            if self._battery_task is not None and not self._battery_task.done():
+                self._battery_task.cancel()
+                try:
+                    await self._battery_task
+                except asyncio.CancelledError:
+                    pass
+                except Exception:
+                    pass
             if self._device_model is not None:
                 try:
                     self._device_model.closeDevice()
@@ -175,9 +186,38 @@ class BleIMUDevice:
                 except Exception:
                     pass
         finally:
+            self._battery_task = None
             self._open_task = None
             self._device_model = None
             self._last_update_ts = None
+            self._connected = False
+
+    async def _battery_poll_loop(self, interval_s: float = 30.0):
+        try:
+            await asyncio.sleep(1.0)
+            while self.running:
+                dm = self._device_model
+                if dm is None or not bool(getattr(dm, "isOpen", False)):
+                    await asyncio.sleep(1.0)
+                    continue
+                try:
+                    battery = await dm.readBattery(timeout=2.0)
+                except asyncio.CancelledError:
+                    raise
+                except Exception:
+                    battery = None
+                if isinstance(battery, dict):
+                    battery_payload = {
+                        "raw": battery.get("raw"),
+                        "voltage": battery.get("voltage"),
+                        "percent": battery.get("percent"),
+                        "timestamp": datetime.now().isoformat(),
+                    }
+                    with self._lock:
+                        self.last_data["battery"] = battery_payload
+                await asyncio.sleep(max(1.0, float(interval_s)))
+        except asyncio.CancelledError:
+            pass
 
     async def _connect_and_listen(self):
         try:
@@ -187,46 +227,89 @@ class BleIMUDevice:
             self.running = False
             return
 
-        async def find_device() -> Optional[Any]:
-            scan_timeout_s = 30.0
-            if self.ble_name:
-                find_by_name = getattr(BleakScanner, "find_device_by_name", None)
-                if callable(find_by_name):
-                    try:
-                        device = await find_by_name(self.ble_name, timeout=scan_timeout_s)
-                        if device is not None:
-                            if self.mac_address and (getattr(device, "address", "") or "").lower() != self.mac_address.lower():
-                                return None
-                            return device
-                    except Exception:
-                        pass
-            try:
-                found = await BleakScanner.discover(timeout=scan_timeout_s)
-            except Exception:
-                found = []
-            if self.ble_name:
-                for d in found:
-                    if (getattr(d, "name", None) or "") != self.ble_name:
-                        continue
-                    if self.mac_address and (getattr(d, "address", "") or "").lower() != self.mac_address.lower():
-                        continue
-                    return d
-            if self.mac_address:
-                target = self.mac_address.lower()
-                for d in found:
-                    addr = getattr(d, "address", "") or ""
-                    if addr.lower() == target:
+        async def find_device(total_timeout_s: float = 30.0) -> Optional[Any]:
+            if self._last_ble_device is not None:
+                return self._last_ble_device
+
+            find_by_address = getattr(BleakScanner, "find_device_by_address", None)
+            find_by_name = getattr(BleakScanner, "find_device_by_name", None)
+
+            deadline = time.time() + max(0.1, total_timeout_s)
+            attempt = 0
+
+            async def _match_discover(timeout_s: float) -> Optional[Any]:
+                try:
+                    found = await BleakScanner.discover(timeout=timeout_s)
+                except Exception:
+                    found = []
+
+                if self.mac_address:
+                    target = self.mac_address.lower()
+                    for d in found:
+                        addr = (getattr(d, "address", "") or "").lower()
+                        if addr == target:
+                            return d
+
+                if self.ble_name:
+                    for d in found:
+                        if (getattr(d, "name", None) or "") != self.ble_name:
+                            continue
+                        if self.mac_address and (getattr(d, "address", "") or "").lower() != self.mac_address.lower():
+                            continue
                         return d
-            candidates = [d for d in found if (getattr(d, "name", "") or "").startswith("WT")]
-            if len(candidates) == 1:
-                return candidates[0]
+
+                candidates = [d for d in found if (getattr(d, "name", "") or "").startswith("WT")]
+                if len(candidates) == 1:
+                    return candidates[0]
+                return None
+
+            while time.time() < deadline and self.running:
+                attempt += 1
+                remaining = deadline - time.time()
+                per_try = min(5.0, max(0.2, remaining))
+
+                strat = attempt % 3
+                device = None
+
+                if strat == 1 and self.ble_name and callable(find_by_name):
+                    try:
+                        device = await find_by_name(self.ble_name, timeout=per_try)
+                    except Exception:
+                        device = None
+
+                if device is None and strat == 2 and self.mac_address and callable(find_by_address):
+                    try:
+                        device = await find_by_address(self.mac_address, timeout=per_try)
+                    except TypeError:
+                        try:
+                            device = await find_by_address(self.mac_address, cb=dict(use_bdaddr=False))
+                        except Exception:
+                            device = None
+                    except Exception:
+                        device = None
+
+                if device is None:
+                    device = await _match_discover(per_try)
+
+                if device is not None:
+                    if self.mac_address and (getattr(device, "address", "") or "").lower() != self.mac_address.lower():
+                        device = None
+                    elif self.ble_name and getattr(device, "name", None) not in (None, "") and getattr(device, "name", None) != self.ble_name:
+                        device = None
+
+                if device is not None:
+                    self._last_ble_device = device
+                    return device
+
+                await asyncio.sleep(0.2)
+
             return None
 
         while self.running:
             try:
                 attempt_ts = time.perf_counter()
                 logger.info(f"BLE IMU开始扫描并连接: name={self.ble_name}, mac={self.mac_address}")
-                device = await find_device()
+                device = await find_device(total_timeout_s=30.0)
 
                 if device is None:
                     logger.info(f"BLE IMU扫描未发现设备 (耗时: {(time.perf_counter()-attempt_ts)*1000:.1f}ms)")
@@ -236,13 +319,14 @@ class BleIMUDevice:
                 device_addr = getattr(device, "address", None)
                 device_name = getattr(device, "name", None)
                 logger.info(f"BLE IMU发现设备 (耗时: {(time.perf_counter()-attempt_ts)*1000:.1f}ms, address={device_addr}, name={device_name})")
+                self._last_ble_device = device
                 self._connected = False
                 self._last_update_ts = None
                 self._device_model = self._wit_device_model.DeviceModel("WitMotionBle5.0", device, self._on_device_update)
                 self._open_task = asyncio.create_task(self._device_model.openDevice())
 
                 ready = False
-                ready_timeout_s = 20.0
+                ready_timeout_s = 30.0
                 deadline = time.time() + ready_timeout_s
                 while self.running and time.time() < deadline:
                     if self._open_task is not None and self._open_task.done():
@@ -266,23 +350,42 @@ class BleIMUDevice:
                     continue
 
                 logger.info(f"BLE IMU连接并开始产出数据 (耗时: {(time.perf_counter()-attempt_ts)*1000:.1f}ms)")
+                try:
+                    if self._battery_task is None or self._battery_task.done():
+                        self._battery_task = asyncio.create_task(self._battery_poll_loop(interval_s=30.0))
+                except Exception:
+                    pass
 
                 while self.running and self._open_task is not None and not self._open_task.done():
                     await asyncio.sleep(1.0)
 
                 await self._disconnect()
                 self._connected = False
+                self._last_ble_device = None
 
             except asyncio.CancelledError:
                 break
             except Exception as e:
                 logger.error(f"BLE IMU连接/监听失败: {e}", exc_info=True)
                 self._connected = False
+                self._last_ble_device = None
                 await asyncio.sleep(2.0)
 
     @property
     def connected(self) -> bool:
-        return self._connected
+        dm = self._device_model
+        if dm is None:
+            return False
+        if not bool(getattr(dm, 'isOpen', False)):
+            return False
+        client = getattr(dm, 'client', None)
+        if client is not None:
+            try:
+                if not bool(getattr(client, 'is_connected', False)):
+                    return False
+            except Exception:
+                return False
+        return True
 
     @property
     def has_received_data(self) -> bool:
@@ -304,7 +407,13 @@ class MockIMUDevice:
             'roll': 0.0,
             'pitch': 0.0,
             'yaw': 0.0,
-            'temperature': 25.0
+            'temperature': 25.0,
+            'battery': {
+                "raw": None,
+                "voltage": None,
+                "percent": 100,
+                "timestamp": datetime.now().isoformat(),
+            },
         }
         self._phase = 0.0
         self._last_update_ts = None
@@ -352,7 +461,8 @@ class MockIMUDevice:
                     'pitch': self.last_data['roll']
                 },
                 'temperature': self.last_data.get('temperature', 25.0),
-                'timestamp': datetime.now().isoformat()
+                'timestamp': datetime.now().isoformat(),
+                'battery': self.last_data.get('battery'),
             }
         return self.apply_calibration(raw) if apply_calibration else raw
 
@@ -815,8 +925,6 @@ class IMUManager(BaseDevice):
                                 self.update_heartbeat()
                         except Exception:
                             self.update_heartbeat()
-                    else:
-                        self.update_heartbeat()
                 return connected
 
             if hasattr(self.imu_device, 'ser') and getattr(self.imu_device, 'ser', None):
diff --git a/backend/devices/imu_test.py b/backend/devices/imu_test.py
index e83716e1..f055ce3a 100644
--- a/backend/devices/imu_test.py
+++ b/backend/devices/imu_test.py
@@ -4,6 +4,7 @@ import time
 from statistics import mean
 
 import bleak
+import device_model
 
 
 async def find_device_by_address(address: str, timeout_s: float):
@@ -56,13 +57,105 @@ def parse_args():
     parser.add_argument("--runs", type=int, default=10)
     parser.add_argument("--timeout", type=float, default=30.0)
     parser.add_argument("--cooldown", type=float, default=0.3)
-    parser.add_argument("--mode", choices=["mac", "name", "both"], default="both")
+    parser.add_argument("--mode", choices=["mac", "name", "both", "isopen", "battery"], default="both")
     return parser.parse_args()
 
 
 async def main():
     args = parse_args()
 
+    if args.mode == "isopen":
+        device = await find_device_by_name(args.name, args.timeout)
+        if device is None:
+            device = await find_device_by_address(args.address, args.timeout)
+        if device is None:
+            print("FAIL: 未发现设备")
+            return
+        addr = getattr(device, "address", None)
+        name = getattr(device, "name", None)
+        if args.address and addr and addr.lower() != args.address.lower():
+            print(f"FAIL: 发现设备地址不匹配 found={addr} expected={args.address}")
+            return
+        print(f"FOUND address={addr} name={name}")
+
+        first_frame = asyncio.Event()
+
+        def on_update(dm):
+            if not first_frame.is_set():
+                first_frame.set()
+
+        dm = device_model.DeviceModel("imu_test", device, on_update)
+        task = asyncio.create_task(dm.openDevice())
+
+        try:
+            await asyncio.wait_for(first_frame.wait(), timeout=30.0)
+            print(f"OPENED isOpen={dm.isOpen} client_connected={bool(getattr(getattr(dm, 'client', None), 'is_connected', False))}")
+        except Exception:
+            print(f"OPEN_TIMEOUT isOpen={dm.isOpen} client_connected={bool(getattr(getattr(dm, 'client', None), 'is_connected', False))}")
+
+        while True:
+            client_connected = bool(getattr(getattr(dm, "client", None), "is_connected", False))
+            print(f"STATUS isOpen={dm.isOpen} client_connected={client_connected}")
+            if not dm.isOpen:
+                break
+            await asyncio.sleep(1.0)
+
+        try:
+            await asyncio.wait_for(task, timeout=5.0)
+        except Exception:
+            try:
+                task.cancel()
+            except Exception:
+                pass
+        print("DONE")
+        return
+    
+    if args.mode == "battery":
+        device = await find_device_by_name(args.name, args.timeout)
+        if device is None:
+            device = await find_device_by_address(args.address, args.timeout)
+        if device is None:
+            print("FAIL: 未发现设备")
+            return
+        addr = getattr(device, "address", None)
+        name = getattr(device, "name", None)
+        if args.address and addr and addr.lower() != args.address.lower():
+            print(f"FAIL: 发现设备地址不匹配 found={addr} expected={args.address}")
+            return
+        print(f"FOUND address={addr} name={name}")
+
+        first_frame = asyncio.Event()
+
+        def on_update(dm):
+            if not first_frame.is_set():
+                first_frame.set()
+
+        dm = device_model.DeviceModel("imu_test", device, on_update)
+        task = asyncio.create_task(dm.openDevice())
+
+        try:
+            await asyncio.wait_for(first_frame.wait(), timeout=30.0)
+            print("OPENED")
+        except Exception:
+            print("OPEN_TIMEOUT")
+
+        info = await dm.readBattery(timeout=3.0)
+        print(f"BATTERY {info}")
+
+        try:
+            dm.closeDevice()
+        except Exception:
+            pass
+        try:
+            await asyncio.wait_for(task, timeout=5.0)
+        except Exception:
+            try:
+                task.cancel()
+            except Exception:
+                pass
+        print("DONE")
+        return
+
     if args.mode in ("mac", "both"):
         await run_trials(
             "mac",
diff --git a/backend/main.py b/backend/main.py
index bc44da7e..0fb57305 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -270,6 +270,10 @@ class AppServer:
             self.logger.info('开始初始化设备...')
             if self.device_coordinator.initialize():
                 self.logger.info('设备协调器初始化完成')
+                try:
+                    self.device_coordinator.set_status_change_callback(self._on_device_status_change)
+                except Exception as e:
+                    self.logger.error(f'注册设备状态变化回调失败: {e}')
                 # 获取设备管理器实例
                 self.device_managers = self.device_coordinator.get_device_managers()
                 
@@ -1969,6 +1973,10 @@ class AppServer:
             
         try:
             self.logger.info(f'开始重启 {device_type} 设备...')
+            try:
+                self.broadcast_device_status(device_type, False)
+            except Exception:
+                pass
             
             # 调用设备协调器的重启方法
             with self._get_device_lock(device_type):
@@ -1976,6 +1984,10 @@ class AppServer:
             
             if success:
                 self.logger.info(f'{device_type} 设备重启成功')
+                try:
+                    self.broadcast_device_status(device_type, True)
+                except Exception:
+                    pass
                 
                 # 发送重启成功事件到前端
                 self.socketio.emit('device_restart_message', {
@@ -1986,6 +1998,10 @@ class AppServer:
                 return True
             else:
                 self.logger.error(f'{device_type} 设备重启失败!')                
+                try:
+                    self.broadcast_device_status(device_type, False)
+                except Exception:
+                    pass
                 # 发送重启失败事件到前端
                 self.socketio.emit('device_restart_message', {
                     'device_type': device_type,
@@ -2255,7 +2271,7 @@ def main():
     """主函数"""
     # 解析命令行参数
     parser = argparse.ArgumentParser(description='Body Balance Evaluation System Backend')
-    parser.add_argument('--host', default='localhost', help='Host address to bind to')
+    parser.add_argument('--host', default='0.0.0.0', help='Host address to bind to')
     parser.add_argument('--port', type=int, default=5000, help='Port number to bind to')
     parser.add_argument('--debug', action='store_true', help='Enable debug mode')
     args = parser.parse_args()
diff --git a/config.ini b/config.ini
index 8bbec20d..a2a76567 100644
--- a/config.ini
+++ b/config.ini
@@ -35,7 +35,7 @@ chart_dpi = 300
 export_format = csv
 
 [SECURITY]
-secret_key = f50c705c26a963701a4832ae3d69a091674f587a4b02da8b1c59909c0bd312fe
+secret_key = 855842922ac3d1747493bcf40f0b2534387ac6304b903c901cf980e4059d5150
 session_timeout = 3600
 max_login_attempts = 5
 
diff --git a/frontend/src/renderer/src/views/Detection.vue b/frontend/src/renderer/src/views/Detection.vue
index 7e167529..d2d58a3a 100644
--- a/frontend/src/renderer/src/views/Detection.vue
+++ b/frontend/src/renderer/src/views/Detection.vue
@@ -83,7 +83,10 @@
             <div class="body-title-display">
               <div class="body-son-display">
                 <img src="@/assets/detection/title2.png" alt="" style="margin-right: 8px;">
-                <div class="body-posture-text">头部姿态</div>
+                <div class="body-posture-text">
+                  头部姿态
+                  <span v-if="imuBatteryPercent !== null" class="imu-battery-percent">电量{{ imuBatteryPercent }}%</span>
+                </div>
                 <div class="calibration-zero" @click="calibrationClick" style="margin-left:20px">
                   <img src="@/assets/detection/calibration.png" style="margin-right:7px">
                   校准
@@ -1230,6 +1233,7 @@ const headlist = ref({
   tilt: 0,
   pitch: 0
 })
+const imuBatteryPercent = ref(null)
 // 开始计时器
 const startTimer = () => {
   if (isRunning.value) return;
@@ -1781,6 +1785,14 @@ const IMU_CHANGE_EPS = 0.1 // 小于0.1°的变化忽略
 function handleIMUData(data) {
   try {
     if (!data) return
+
+    const batteryPercent = data && data.battery && data.battery.percent
+    if (batteryPercent !== undefined && batteryPercent !== null) {
+      const v = Number(batteryPercent)
+      if (!Number.isNaN(v) && Number.isFinite(v)) {
+        imuBatteryPercent.value = Math.max(0, Math.min(100, Math.round(v)))
+      }
+    }
   
     // 兼容两种载荷结构：
     // 1) { rotation, tilt, pitch }
@@ -2620,17 +2632,28 @@ function refreshClick(type) {
   ElMessage.warning(`🚀 发送重启设备请求...`)
   if (devicesSocket && devicesSocket.connected) {
     if(type == 'camera1'){
+      camera1Status.value = '未连接'
       devicesSocket.emit('restart_device', { device_type: 'camera1' })
     }else if(type == 'camera2'){
+      camera2Status.value = '未连接'
       devicesSocket.emit('restart_device', { device_type: 'camera2' })
     }else if(type == 'femtobolt'){
+      femtoboltStatus.value = '未连接'
       devicesSocket.emit('restart_device', { device_type: 'femtobolt' })
     }else if(type == 'imu'){
+      imuStatus.value = '未连接'
       devicesSocket.emit('restart_device', { device_type: 'imu' })
     }else if(type == 'pressure'){
+      pressureStatus.value = '未连接'
       devicesSocket.emit('restart_device', { device_type: 'pressure' })
     }else if(type == 'remote'){
+      remoteStatus.value = '未连接'
       devicesSocket.emit('restart_device', { device_type: 'remote' })
+    }else if(type == 'camera'){
+      camera1Status.value = '未连接'
+      camera2Status.value = '未连接'
+      devicesSocket.emit('restart_device', { device_type: 'camera1' })
+      devicesSocket.emit('restart_device', { device_type: 'camera2' })
     }
   } else {
     console.warn('⚠️ Socket服务未连接，无法重启设备！')
@@ -2841,6 +2864,13 @@ function viewClick(e){
   font-style: normal;
   font-size: 14px;
 }
+.imu-battery-percent{
+  margin-left: 10px;
+  font-weight: 400;
+  font-style: normal;
+  font-size: 14px;
+  color: rgba(255, 255, 255, 0.8);
+}
 
 .body-header-bottombox{
   width: 100%;
@@ -3653,4 +3683,4 @@ function viewClick(e){
 .pop-up-camera-display .el-checkbox__inner:hover{
   border-color: #14aaff;
 }
-</style>
\ No newline at end of file
+</style>