From 0cbfb4f4eee79b4368234164dcafc602c8e01f1d Mon Sep 17 00:00:00 2001
From: stu2not <stu2not@stu2notdeMac-mini.local>
Date: Tue, 5 May 2026 16:33:21 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=8C=E5=96=84=E7=99=BB=E5=BD=95=E7=BB=91?=
 =?UTF-8?q?=E5=AE=9A=E5=AE=9A=E4=BD=8D=E4=B8=8E=E7=AE=A1=E7=90=86=E9=A1=B5?=
 =?UTF-8?q?=E4=BA=A4=E4=BA=92?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 banban-mini/src/pages/bind/index.scss      |  32 +-
 banban-mini/src/pages/bind/index.tsx       |  32 +-
 banban-mini/src/pages/location/index.scss  |  27 ++
 banban-mini/src/pages/location/index.tsx   | 331 ++++++++++++++-------
 banban-mini/src/pages/login/index.scss     |  27 ++
 banban-mini/src/pages/login/index.tsx      |  64 ++--
 banban-mini/src/pages/sleep/index.scss     |  22 +-
 banban-mini/src/pages/sleep/index.tsx      |  29 +-
 banban-mini/src/services/api.ts            |  10 +-
 banban-mini/src/services/auth.ts           |   1 +
 talkingq-url/banban/dao/binding.py         |  16 +
 talkingq-url/banban/dao/child.py           |  28 +-
 talkingq-url/banban/dao/location.py        |  20 +-
 talkingq-url/banban/routers/wechat_auth.py |  20 +-
 talkingq-url/banban/service/binding.py     |  12 +
 talkingq-url/banban/service/location.py    |  60 +++-
 16 files changed, 541 insertions(+), 190 deletions(-)

diff --git a/banban-mini/src/pages/bind/index.scss b/banban-mini/src/pages/bind/index.scss
index d9cb7c9..b1937ed 100644
--- a/banban-mini/src/pages/bind/index.scss
+++ b/banban-mini/src/pages/bind/index.scss
@@ -27,19 +27,39 @@
 
 .bind-header {
   padding: 80px 32px 32px;
+  position: relative;
   text-align: center;
 
+  .back-btn {
+    position: absolute;
+    left: 32px;
+    top: 80px;
+    display: flex;
+    align-items: center;
+    padding: 12px 18px;
+    border-radius: 999px;
+    background: #FFFFFF;
+    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
+  }
+
+  .back-icon {
+    width: 28px;
+    height: 28px;
+    margin-right: 10px;
+  }
+
+  .back-text {
+    font-size: 26px;
+    color: #1A1A1A;
+    font-weight: 500;
+  }
+
   .title {
     font-size: 44px;
     font-weight: 700;
     color: #1A1A1A;
     display: block;
-    margin-bottom: 12px;
-  }
-
-  .subtitle {
-    font-size: 28px;
-    color: #666666;
+    padding: 0 120px;
   }
 }
 
diff --git a/banban-mini/src/pages/bind/index.tsx b/banban-mini/src/pages/bind/index.tsx
index 8abeb44..003246a 100644
--- a/banban-mini/src/pages/bind/index.tsx
+++ b/banban-mini/src/pages/bind/index.tsx
@@ -116,6 +116,14 @@ export default function Bind() {
     Taro.reLaunch({ url: '/pages/device/index' })
   }
 
+  const handleBack = () => {
+    if (getCurrentPages().length > 1) {
+      Taro.navigateBack()
+      return
+    }
+    Taro.switchTab({ url: '/pages/device/index' })
+  }
+
   const stopPolling = () => {
     if (pollingRef.current) {
       clearTimeout(pollingRef.current)
@@ -123,10 +131,10 @@ export default function Bind() {
     }
   }
 
-  const schedulePoll = () => {
+  const schedulePoll = (nextBindToken?: string) => {
     stopPolling()
     pollingRef.current = setTimeout(() => {
-      void pollBindSession()
+      void pollBindSession(nextBindToken)
     }, 1500)
   }
 
@@ -138,17 +146,18 @@ export default function Bind() {
     setBindHint('')
   }
 
-  const pollBindSession = async () => {
-    if (!bindToken) return
+  const pollBindSession = async (nextBindToken?: string) => {
+    const activeBindToken = (nextBindToken || bindToken).trim()
+    if (!activeBindToken) return
 
     try {
-      const session = await getNFCBindSession(bindToken)
+      const session = await getNFCBindSession(activeBindToken)
       setBindStatus(session.status)
       setCardUUID(session.card_uuid || '')
 
       if (session.status === SESSION_STATUS_PENDING) {
         setBindHint('已发送绑卡指令，请拿自己的卡去设备上贴一下')
-        schedulePoll()
+        schedulePoll(activeBindToken)
         return
       }
 
@@ -303,7 +312,7 @@ export default function Bind() {
       setBindToken(session.bind_token)
       setBindStatus(session.status)
       setBindHint('已发送绑卡指令，请去设备上贴自己的卡')
-      schedulePoll()
+      schedulePoll(session.bind_token)
       Taro.showToast({ title: '请去设备上贴卡', icon: 'none' })
     } catch (error: any) {
       console.error('[bind] submit failed:', error)
@@ -331,12 +340,11 @@ export default function Bind() {
   return (
     <View className='bind-page'>
       <View className='bind-header'>
+        <View className='back-btn' onClick={handleBack}>
+          <Image className='back-icon' src={require('../../assets/tab-icons/arrow-left.png')} mode='aspectFit' />
+          <Text className='back-text'>返回</Text>
+        </View>
         <Text className='title'>{isPendingBinding ? '补全绑定' : '扫码贴卡绑定设备'}</Text>
-        <Text className='subtitle'>
-          {isPendingBinding
-            ? '当前设备已存在待补全关系，请先补充儿童资料'
-            : '先选择儿童，再扫码设备，系统会下发绑卡指令，随后去设备上贴卡确认'}
-        </Text>
       </View>
 
       <View className='scan-area'>
diff --git a/banban-mini/src/pages/location/index.scss b/banban-mini/src/pages/location/index.scss
index 5edceae..74d393f 100644
--- a/banban-mini/src/pages/location/index.scss
+++ b/banban-mini/src/pages/location/index.scss
@@ -157,6 +157,17 @@
   }
 }
 
+.location-empty-shell {
+  margin: 0 24px;
+}
+
+.location-empty-card {
+  background: #FFFFFF;
+  border-radius: 20px;
+  padding: 32px 24px;
+  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
+}
+
 .location-stack {
   display: flex;
   flex-direction: column;
@@ -187,3 +198,19 @@
   color: #666666;
   line-height: 1.5;
 }
+
+.location-empty-action {
+  margin-top: 24px;
+  height: 88px;
+  border-radius: 16px;
+  background: #FF8C42;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.location-empty-action-text {
+  font-size: 30px;
+  color: #FFFFFF;
+  font-weight: 600;
+}
diff --git a/banban-mini/src/pages/location/index.tsx b/banban-mini/src/pages/location/index.tsx
index 16526b1..ab83d11 100644
--- a/banban-mini/src/pages/location/index.tsx
+++ b/banban-mini/src/pages/location/index.tsx
@@ -2,6 +2,7 @@ import { View, Text, Map } from '@tarojs/components'
 import { useState } from 'react'
 import Taro, { useDidShow } from '@tarojs/taro'
 import { getToken } from '@/services/auth'
+import { loadCurrentChildBindingContext } from '@/services/binding'
 import {
   getCurrentDeviceLocation,
   getDeviceTrajectory,
@@ -46,6 +47,56 @@ function formatAccuracy(value?: number | null): string {
   return `${value} 米`
 }
 
+function formatOptionalNumber(value?: number | null, digits = 1): string | null {
+  if (value === undefined || value === null) return null
+  return Number(value).toFixed(digits)
+}
+
+function buildLocationDetailLines(
+  point: DeviceLocation | DeviceTrajectoryPoint,
+  options?: { includeIdentity?: boolean }
+): string[] {
+  const lines: string[] = []
+
+  if (options?.includeIdentity) {
+    lines.push(`设备 ${point.device_id} · ${point.child_name || '未命名儿童'}`)
+  }
+
+  lines.push(`上报时间 ${formatTime(point.device_time)}`)
+
+  if (point.server_time) {
+    lines.push(`服务端时间 ${formatTime(point.server_time)}`)
+  }
+  if (point.coord_type) {
+    lines.push(`坐标系 ${point.coord_type}`)
+  }
+  if (point.accuracy_m !== null && point.accuracy_m !== undefined) {
+    lines.push(`定位精度 ${formatAccuracy(point.accuracy_m)}`)
+  }
+
+  const altitudeText = formatOptionalNumber(point.altitude_m)
+  if (altitudeText) {
+    lines.push(`海拔 ${altitudeText} 米`)
+  }
+
+  const speedText = formatOptionalNumber(point.speed_mps)
+  if (speedText) {
+    lines.push(`速度 ${speedText} 米/秒`)
+  }
+
+  if (point.heading_deg !== null && point.heading_deg !== undefined) {
+    lines.push(`方向 ${point.heading_deg}°`)
+  }
+  if (point.source !== null && point.source !== undefined && point.source > 0) {
+    lines.push(`定位来源 ${point.source}`)
+  }
+  if (point.battery_pct !== null && point.battery_pct !== undefined) {
+    lines.push(`设备电量 ${point.battery_pct}%`)
+  }
+
+  return lines
+}
+
 function getTodayStartISOString(): string {
   const now = new Date()
   now.setHours(0, 0, 0, 0)
@@ -72,6 +123,9 @@ export default function Location() {
   const [selectedPoint, setSelectedPoint] = useState<DeviceTrajectoryPoint | null>(null)
   const [trajectoryMode, setTrajectoryMode] = useState<TrajectoryMode>('current')
   const [coordinates, setCoordinates] = useState(DEFAULT_COORDINATES)
+  const [emptyState, setEmptyState] = useState<{ title: string; desc: string; actionText: string; actionUrl: string } | null>(
+    null
+  )
 
   useDidShow(() => {
     void loadLocation()
@@ -90,13 +144,44 @@ export default function Location() {
     }
 
     setLoading(true)
+    setEmptyState(null)
     if (nextMode) {
       setTrajectoryMode(nextMode)
       setSelectedPoint(null)
     }
 
     try {
-      const currentLocation = await getCurrentDeviceLocation()
+      const context = await loadCurrentChildBindingContext()
+      if (!context.currentChild) {
+        setDeviceLocation(null)
+        setTrajectory([])
+        setSelectedPoint(null)
+        setCoordinates(DEFAULT_COORDINATES)
+        setEmptyState({
+          title: '还没有当前孩子',
+          desc: '请先去设置与管理页创建或选择一个孩子，再查看定位。',
+          actionText: '去设置与管理',
+          actionUrl: '/pages/sleep/index',
+        })
+        return
+      }
+
+      const resolvedDeviceId = context.currentBinding?.device_id || ''
+      if (!resolvedDeviceId) {
+        setDeviceLocation(null)
+        setTrajectory([])
+        setSelectedPoint(null)
+        setCoordinates(DEFAULT_COORDINATES)
+        setEmptyState({
+          title: '当前孩子还没有绑定设备',
+          desc: '先给当前孩子绑定一台设备，定位和轨迹页才会有内容。',
+          actionText: '去绑定设备',
+          actionUrl: '/pages/bind/index',
+        })
+        return
+      }
+
+      const currentLocation = await getCurrentDeviceLocation(resolvedDeviceId)
       setDeviceLocation(currentLocation)
 
       const nextCoordinates = currentLocation
@@ -109,12 +194,14 @@ export default function Location() {
       let points: DeviceTrajectoryPoint[] = []
       if (targetMode === 'today') {
         const response = await getDeviceTrajectory({
+          deviceId: resolvedDeviceId,
           startAt: getTodayStartISOString(),
           limit: 200,
         })
         points = response?.items || []
       } else if (targetMode === 'recent') {
         const response = await getDeviceTrajectory({
+          deviceId: resolvedDeviceId,
           startAt: getRecentStartISOString(72),
           limit: 100,
         })
@@ -267,128 +354,144 @@ export default function Location() {
         <Text className='page-title'>设备定位</Text>
       </View>
 
-      <View className='mode-switch'>
-        {MODE_OPTIONS.map((item) => (
-          <View
-            key={item.key}
-            className={`mode-chip ${trajectoryMode === item.key ? 'active' : ''}`}
-            onClick={() => {
-              if (trajectoryMode === item.key) return
-              void loadLocation(false, item.key)
-            }}
-          >
-            <Text className='mode-chip-text'>{item.label}</Text>
-          </View>
-        ))}
-      </View>
-
-      <View className='map-section'>
-        <Map
-          className='map'
-          latitude={coordinates.latitude}
-          longitude={coordinates.longitude}
-          scale={15}
-          markers={markers}
-          polyline={polyline}
-          onMarkerTap={handleMarkerTap}
-          onCalloutTap={handleMarkerTap}
-          onError={(event) => {
-            console.error('[location] map error:', event.detail)
-          }}
-        />
-      </View>
-
-      <View className='location-card'>
-        <View className='card-header'>
-          <View className='header-left'>
-            <Text className='location-title'>{summaryTitle}</Text>
-            <Text className='location-update'>
-              {loading
-                ? '正在获取设备位置...'
-                : trajectoryMode === 'current'
-                  ? `更新于 ${formatTime(deviceLocation?.updated_at)}`
-                  : `轨迹点 ${trajectory.length} 个 · 最近更新 ${formatTime(trajectory[trajectory.length - 1]?.device_time)}`}
-            </Text>
-          </View>
-          <View className='refresh-btn' onClick={() => loadLocation(true)}>
-            <Text className='refresh-icon'>↻</Text>
+      {emptyState ? (
+        <View className='location-empty-shell'>
+          <View className='location-empty-card'>
+            <Text className='location-empty-title'>{emptyState.title}</Text>
+            <Text className='location-empty-desc'>{emptyState.desc}</Text>
+            <View
+              className='location-empty-action'
+              onClick={() => {
+                if (emptyState.actionUrl === '/pages/sleep/index') {
+                  Taro.switchTab({ url: emptyState.actionUrl })
+                  return
+                }
+                Taro.navigateTo({ url: emptyState.actionUrl })
+              }}
+            >
+              <Text className='location-empty-action-text'>{emptyState.actionText}</Text>
+            </View>
           </View>
         </View>
+      ) : (
+        <>
+          <View className='mode-switch'>
+            {MODE_OPTIONS.map((item) => (
+              <View
+                key={item.key}
+                className={`mode-chip ${trajectoryMode === item.key ? 'active' : ''}`}
+                onClick={() => {
+                  if (trajectoryMode === item.key) return
+                  void loadLocation(false, item.key)
+                }}
+              >
+                <Text className='mode-chip-text'>{item.label}</Text>
+              </View>
+            ))}
+          </View>
 
-        {trajectoryMode === 'current' ? (
-          deviceLocation ? (
-            <View className='location-detail'>
-              <View className='location-icon'>
-                <Text>📍</Text>
+          <View className='map-section'>
+            <Map
+              className='map'
+              latitude={coordinates.latitude}
+              longitude={coordinates.longitude}
+              scale={15}
+              markers={markers}
+              polyline={polyline}
+              onMarkerTap={handleMarkerTap}
+              onCalloutTap={handleMarkerTap}
+              onError={(event) => {
+                console.error('[location] map error:', event.detail)
+              }}
+            />
+          </View>
+
+          <View className='location-card'>
+            <View className='card-header'>
+              <View className='header-left'>
+                <Text className='location-title'>{summaryTitle}</Text>
+                <Text className='location-update'>
+                  {loading
+                    ? '正在获取设备位置...'
+                    : trajectoryMode === 'current'
+                      ? `更新于 ${formatTime(deviceLocation?.updated_at)}`
+                      : `轨迹点 ${trajectory.length} 个 · 最近更新 ${formatTime(trajectory[trajectory.length - 1]?.device_time)}`}
+                </Text>
               </View>
-              <View className='location-info'>
-                <Text className='location-coordinate'>
-                  {deviceLocation.lat.toFixed(6)}, {deviceLocation.lng.toFixed(6)}
-                </Text>
-                <Text className='location-desc'>
-                  设备 {deviceLocation.device_id} · {deviceLocation.child_name || '未命名儿童'}
-                </Text>
-                <Text className='location-desc'>上报时间 {formatTime(deviceLocation.device_time)}</Text>
-                <Text className='location-desc'>
-                  坐标系 {deviceLocation.coord_type} · 精度 {formatAccuracy(deviceLocation.accuracy_m)}
-                </Text>
-                {deviceLocation.battery_pct !== null && deviceLocation.battery_pct !== undefined && (
-                  <Text className='location-desc'>设备电量 {deviceLocation.battery_pct}%</Text>
+              <View className='refresh-btn' onClick={() => loadLocation(true)}>
+                <Text className='refresh-icon'>↻</Text>
+              </View>
+            </View>
+
+            {trajectoryMode === 'current' ? (
+              deviceLocation ? (
+                <View className='location-detail'>
+                  <View className='location-icon'>
+                    <Text>📍</Text>
+                  </View>
+                  <View className='location-info'>
+                    <Text className='location-coordinate'>
+                      {deviceLocation.lat.toFixed(6)}, {deviceLocation.lng.toFixed(6)}
+                    </Text>
+                    {buildLocationDetailLines(deviceLocation, { includeIdentity: true }).map((line, index) => (
+                      <Text key={`current-${index}`} className='location-desc'>
+                        {line}
+                      </Text>
+                    ))}
+                  </View>
+                </View>
+              ) : (
+                <View className='location-empty'>
+                  <Text className='location-empty-title'>当前孩子暂无设备位置</Text>
+                </View>
+              )
+            ) : trajectory.length > 0 ? (
+              <View className='location-stack'>
+                {selectedPoint && (
+                  <View className='location-detail selected-point-card'>
+                    <View className='location-icon selected'>
+                      <Text>●</Text>
+                    </View>
+                    <View className='location-info'>
+                      <Text className='location-coordinate'>
+                        {selectedPoint.lat.toFixed(6)}, {selectedPoint.lng.toFixed(6)}
+                      </Text>
+                      {buildLocationDetailLines(selectedPoint).map((line, index) => (
+                        <Text key={`selected-${index}`} className='location-desc'>
+                          {line}
+                        </Text>
+                      ))}
+                    </View>
+                  </View>
                 )}
+
+                <View className='location-detail'>
+                  <View className='location-icon'>
+                    <Text>🛣️</Text>
+                  </View>
+                  <View className='location-info'>
+                    <Text className='location-coordinate'>共 {trajectory.length} 个轨迹点</Text>
+                    <Text className='location-desc'>
+                      起点 {formatTime(trajectory[0].device_time)} · {trajectory[0].lat.toFixed(6)}, {trajectory[0].lng.toFixed(6)}
+                    </Text>
+                    <Text className='location-desc'>
+                      终点 {formatTime(trajectory[trajectory.length - 1].device_time)} ·{' '}
+                      {trajectory[trajectory.length - 1].lat.toFixed(6)}, {trajectory[trajectory.length - 1].lng.toFixed(6)}
+                    </Text>
+                  </View>
+                </View>
               </View>
-            </View>
-          ) : (
-            <View className='location-empty'>
-              <Text className='location-empty-title'>当前孩子暂无设备位置</Text>
-            </View>
-          )
-        ) : trajectory.length > 0 ? (
-          <View className='location-stack'>
-            {selectedPoint && (
-              <View className='location-detail selected-point-card'>
-                <View className='location-icon selected'>
-                  <Text>●</Text>
-                </View>
-                <View className='location-info'>
-                  <Text className='location-coordinate'>
-                    {selectedPoint.lat.toFixed(6)}, {selectedPoint.lng.toFixed(6)}
-                  </Text>
-                  <Text className='location-desc'>上报时间 {formatTime(selectedPoint.device_time)}</Text>
-                  <Text className='location-desc'>
-                    坐标系 {selectedPoint.coord_type} · 精度 {formatAccuracy(selectedPoint.accuracy_m)}
-                  </Text>
-                  {selectedPoint.battery_pct !== null && selectedPoint.battery_pct !== undefined && (
-                    <Text className='location-desc'>设备电量 {selectedPoint.battery_pct}%</Text>
-                  )}
-                </View>
+            ) : (
+              <View className='location-empty'>
+                <Text className='location-empty-title'>暂无轨迹</Text>
+                <Text className='location-empty-desc'>
+                  {trajectoryMode === 'today' ? '当前孩子今天还没有新的历史点位。' : '当前孩子最近没有新的历史点位。'}
+                </Text>
               </View>
             )}
-
-            <View className='location-detail'>
-              <View className='location-icon'>
-                <Text>🛣️</Text>
-              </View>
-              <View className='location-info'>
-                <Text className='location-coordinate'>共 {trajectory.length} 个轨迹点</Text>
-                <Text className='location-desc'>
-                  起点 {formatTime(trajectory[0].device_time)} · {trajectory[0].lat.toFixed(6)}, {trajectory[0].lng.toFixed(6)}
-                </Text>
-                <Text className='location-desc'>
-                  终点 {formatTime(trajectory[trajectory.length - 1].device_time)} ·{' '}
-                  {trajectory[trajectory.length - 1].lat.toFixed(6)}, {trajectory[trajectory.length - 1].lng.toFixed(6)}
-                </Text>
-              </View>
-            </View>
           </View>
-        ) : (
-          <View className='location-empty'>
-            <Text className='location-empty-title'>暂无轨迹</Text>
-            <Text className='location-empty-desc'>
-              {trajectoryMode === 'today' ? '当前孩子今天还没有新的历史点位。' : '当前孩子最近没有新的历史点位。'}
-            </Text>
-          </View>
-        )}
-      </View>
+        </>
+      )}
     </View>
   )
 }
diff --git a/banban-mini/src/pages/login/index.scss b/banban-mini/src/pages/login/index.scss
index 26c0287..e0b1763 100644
--- a/banban-mini/src/pages/login/index.scss
+++ b/banban-mini/src/pages/login/index.scss
@@ -72,6 +72,33 @@
   }
 }
 
+.nickname-card {
+  background: #FFFFFF;
+  border-radius: 20px;
+  padding: 28px 24px;
+  margin-bottom: 32px;
+  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
+
+  .nickname-label {
+    display: block;
+    font-size: 28px;
+    color: #1A1A1A;
+    font-weight: 600;
+    margin-bottom: 18px;
+  }
+
+  .nickname-input {
+    width: 100%;
+    height: 88px;
+    box-sizing: border-box;
+    padding: 0 24px;
+    border-radius: 16px;
+    background: #F5F7FA;
+    font-size: 30px;
+    color: #1A1A1A;
+  }
+}
+
 .login-btn-wrapper {
   margin-bottom: 32px;
 
diff --git a/banban-mini/src/pages/login/index.tsx b/banban-mini/src/pages/login/index.tsx
index 1bc9834..810a2b3 100644
--- a/banban-mini/src/pages/login/index.tsx
+++ b/banban-mini/src/pages/login/index.tsx
@@ -1,4 +1,4 @@
-import { View, Text, Button } from '@tarojs/components'
+import { View, Text, Button, Input } from '@tarojs/components'
 import { useEffect, useState } from 'react'
 import Taro from '@tarojs/taro'
 import { getToken, wechatLogin } from '@/services/auth'
@@ -6,16 +6,31 @@ import './index.scss'
 
 export default function Login() {
   const [submitting, setSubmitting] = useState(false)
+  const [nickname, setNickname] = useState('')
 
   useEffect(() => {
     if (getToken()) {
       Taro.reLaunch({ url: '/pages/device/index' })
+      return
+    }
+
+    const cachedUserInfo = (Taro.getStorageSync('userInfo') || {}) as {
+      nickname?: string
+    }
+    if (cachedUserInfo.nickname) {
+      setNickname(cachedUserInfo.nickname)
     }
   }, [])
 
   const handleLogin = async () => {
     if (submitting) return
 
+    const cachedUserInfo = (Taro.getStorageSync('userInfo') || {}) as {
+      nickname?: string
+      avatar_url?: string
+    }
+    const normalizedNickname = nickname.trim() || cachedUserInfo.nickname?.trim() || ''
+
     setSubmitting(true)
     Taro.showLoading({ title: '登录中...' })
 
@@ -25,35 +40,26 @@ export default function Login() {
         throw new Error('未获取到微信登录凭证')
       }
 
-      let userInfo:
-        | {
-            nickName?: string
-            avatarUrl?: string
-          }
-        | null = null
-
-      try {
-        const profileRes = await Taro.getUserProfile({
-          desc: '用于完善家长资料展示',
-        })
-        userInfo = profileRes.userInfo || null
-      } catch (error) {
-        console.log('[login] getUserProfile skipped:', error)
-      }
-
-      await wechatLogin({
+      const session = await wechatLogin({
         code: loginRes.code,
-        nickname: userInfo?.nickName,
-        avatar_url: userInfo?.avatarUrl,
+        nickname: normalizedNickname || undefined,
+        avatar_url: cachedUserInfo.avatar_url,
       })
 
-      if (userInfo) {
+      const nextUserInfo = {
+        nickname: session.nickname || normalizedNickname,
+        avatar_url: cachedUserInfo.avatar_url,
+      }
+
+      if (nextUserInfo.nickname || nextUserInfo.avatar_url) {
         Taro.setStorageSync('userInfo', {
-          nickname: userInfo.nickName,
-          avatar_url: userInfo.avatarUrl,
+          nickname: nextUserInfo.nickname,
+          avatar_url: nextUserInfo.avatar_url,
         })
+        setNickname(nextUserInfo.nickname || '')
       } else {
         Taro.removeStorageSync('userInfo')
+        setNickname('')
       }
 
       Taro.showToast({ title: '登录成功', icon: 'success' })
@@ -100,6 +106,18 @@ export default function Login() {
           </View>
         </View>
 
+        <View className='nickname-card'>
+          <Text className='nickname-label'>家长昵称</Text>
+          <Input
+            className='nickname-input'
+            type='nickname'
+            maxlength={64}
+            placeholder='请输入家长昵称'
+            value={nickname}
+            onInput={(event) => setNickname(event.detail.value)}
+          />
+        </View>
+
         <View className='login-btn-wrapper'>
           <Button className='login-btn' loading={submitting} disabled={submitting} onClick={handleLogin}>
             <Text className='btn-icon'>🌐</Text>
diff --git a/banban-mini/src/pages/sleep/index.scss b/banban-mini/src/pages/sleep/index.scss
index b9d7829..50d5fa8 100644
--- a/banban-mini/src/pages/sleep/index.scss
+++ b/banban-mini/src/pages/sleep/index.scss
@@ -50,12 +50,6 @@
       font-weight: 600;
       color: #1A1A1A;
       display: block;
-      margin-bottom: 8px;
-    }
-
-    .user-role {
-      font-size: 26px;
-      color: #666666;
     }
   }
 
@@ -300,6 +294,22 @@
   overflow-y: auto;
 }
 
+.device-switch-footer {
+  margin-top: 20px;
+}
+
+.device-switch-add {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  height: 84px;
+  border-radius: 18px;
+  background: #FFF2E7;
+  font-size: 28px;
+  color: #FF8C42;
+  font-weight: 600;
+}
+
 .device-switch-item {
   padding: 24px;
   border-radius: 18px;
diff --git a/banban-mini/src/pages/sleep/index.tsx b/banban-mini/src/pages/sleep/index.tsx
index 6f55381..7918355 100644
--- a/banban-mini/src/pages/sleep/index.tsx
+++ b/banban-mini/src/pages/sleep/index.tsx
@@ -1,7 +1,7 @@
 import { View, Text, Image, Input } from '@tarojs/components'
 import { useState } from 'react'
 import Taro, { useDidShow } from '@tarojs/taro'
-import { clearToken, getCurrentUserId, getToken } from '@/services/auth'
+import { clearToken, getToken } from '@/services/auth'
 import {
   BindingListItem,
   clearSelectedBindingDeviceId,
@@ -95,6 +95,11 @@ export default function Sleep() {
     })
   }
 
+  const handleOpenAddChildFromSwitch = () => {
+    setShowChildModal(false)
+    handleOpenModal('add')
+  }
+
   const handleSubmitModal = async () => {
     const normalizedName = childName.trim()
     if (!normalizedName) {
@@ -181,6 +186,11 @@ export default function Sleep() {
       return
     }
 
+    if (item.name === '新增孩子') {
+      handleOpenModal('add')
+      return
+    }
+
     if (item.name === '绑定设备') {
       if (!currentChild) {
         handleOpenModal('add')
@@ -209,7 +219,7 @@ export default function Sleep() {
     )
   }
 
-  const userId = getCurrentUserId()
+  const parentDisplayName = parentInfo.nickname?.trim() || '家长'
   const menuItems: MenuItem[] = [
     {
       icon: require('../../assets/tab-icons/orange-robot.png'),
@@ -218,6 +228,13 @@ export default function Sleep() {
       value: currentChildName,
       arrow: true,
     },
+    {
+      icon: require('../../assets/tab-icons/orange-robot.png'),
+      iconBgClass: 'orange',
+      name: '新增孩子',
+      value: '',
+      arrow: true,
+    },
     {
       icon: require('../../assets/tab-icons/orange-robot.png'),
       iconBgClass: 'orange',
@@ -257,8 +274,7 @@ export default function Sleep() {
           )}
         </View>
         <View className='user-info'>
-          <Text className='user-name'>{parentInfo.nickname || '家长用户'}</Text>
-          <Text className='user-role'>用户 ID: {userId || '--'}</Text>
+          <Text className='user-name'>{parentDisplayName}</Text>
         </View>
         <View className='verified-badge'>
           <Text>{currentChild ? '已选择当前孩子' : '未选择孩子'}</Text>
@@ -342,6 +358,11 @@ export default function Sleep() {
                 })}
               </View>
             )}
+            <View className='device-switch-footer'>
+              <Text className='device-switch-add' onClick={handleOpenAddChildFromSwitch}>
+                + 新增孩子
+              </Text>
+            </View>
             <View className='modal-actions'>
               <Text className='modal-action cancel' onClick={() => setShowChildModal(false)}>
                 关闭
diff --git a/banban-mini/src/services/api.ts b/banban-mini/src/services/api.ts
index c6ff480..407b8ba 100644
--- a/banban-mini/src/services/api.ts
+++ b/banban-mini/src/services/api.ts
@@ -4,6 +4,10 @@ import { getCurrentUserId, getToken, handleUnauthorized } from './session'
 
 const BASE_URL = API_BASE_URL
 const REQUEST_TIMEOUT_MS = 10000
+const ERROR_DETAIL_MAP: Record<string, string> = {
+  'Request failed': '请求失败',
+  'device is already bound, unbind it before binding again': '设备已绑定，请先解绑后再重新绑定',
+}
 
 class ApiError extends Error {
   constructor(public status: number, message: string) {
@@ -12,14 +16,14 @@ class ApiError extends Error {
 }
 
 function getErrorDetail(data: any): string {
-  if (!data) return 'Request failed'
+  if (!data) return ERROR_DETAIL_MAP['Request failed']
   if (typeof data.errMsg === 'string') return data.errMsg
-  if (typeof data.detail === 'string') return data.detail
+  if (typeof data.detail === 'string') return ERROR_DETAIL_MAP[data.detail] || data.detail
   if (Array.isArray(data.detail)) {
     return data.detail.map((item: any) => String(item?.msg || item)).join('; ')
   }
   if (typeof data.message === 'string') return data.message
-  return 'Request failed'
+  return ERROR_DETAIL_MAP['Request failed']
 }
 
 async function request<T>(
diff --git a/banban-mini/src/services/auth.ts b/banban-mini/src/services/auth.ts
index cc09b57..e5f404a 100644
--- a/banban-mini/src/services/auth.ts
+++ b/banban-mini/src/services/auth.ts
@@ -17,6 +17,7 @@ export interface LoginSession {
   token_type: string
   expires_in: number
   user_id: number
+  nickname?: string
 }
 
 export interface Parent {
diff --git a/talkingq-url/banban/dao/binding.py b/talkingq-url/banban/dao/binding.py
index 73d5383..aa9b192 100644
--- a/talkingq-url/banban/dao/binding.py
+++ b/talkingq-url/banban/dao/binding.py
@@ -34,6 +34,20 @@ class BindingDAO(BaseDAO):
             )
         ).mappings().first()
 
+    async def get_active_binding_by_device(self, device_id: str) -> Optional[Mapping]:
+        return (
+            await self.execute(
+                """
+                    SELECT id, device_id, owner_user_id, child_id, status
+                    FROM device_bindings
+                    WHERE device_id = :device_id
+                      AND status = 1
+                    LIMIT 1
+                """,
+                {"device_id": device_id},
+            )
+        ).mappings().first()
+
     async def _clear_child_from_binding(self, binding_row: Mapping[str, object]) -> None:
         row_id = int(binding_row["id"])
         status = int(binding_row["status"])
@@ -372,6 +386,8 @@ class BindingDAO(BaseDAO):
         row = await self.get_by_device(device_id=device_id, user_id=user_id)
         if not row:
             return False
+        if row["child_id"] is not None:
+            return False
 
         await self._upsert_parent_child_relation(user_id=user_id, child_id=child_id)
         await self._bind_device(device_id=device_id, user_id=user_id, child_id=child_id)
diff --git a/talkingq-url/banban/dao/child.py b/talkingq-url/banban/dao/child.py
index adf3c7c..71233ac 100644
--- a/talkingq-url/banban/dao/child.py
+++ b/talkingq-url/banban/dao/child.py
@@ -90,19 +90,17 @@ class ChildDAO(BaseDAO):
         await self.commit()
 
     async def has_access(self, child_id: int, user_id: int) -> bool:
-        return (
-            await self.execute(
-                """
-                    SELECT 1
-                    FROM children AS c
-                    JOIN parent_child_relations AS pcr
-                      ON pcr.child_id = c.child_id
-                    WHERE c.child_id = :child_id
-                      AND pcr.user_id = :user_id
-                      AND c.status = 1
-                      AND pcr.status = 1
-                    """,
-                {"child_id": child_id, "user_id": user_id},
-            ).scalar_one_or_none()
-            is not None
+        result = await self.execute(
+            """
+                SELECT 1
+                FROM children AS c
+                JOIN parent_child_relations AS pcr
+                  ON pcr.child_id = c.child_id
+                WHERE c.child_id = :child_id
+                  AND pcr.user_id = :user_id
+                  AND c.status = 1
+                  AND pcr.status = 1
+                """,
+            {"child_id": child_id, "user_id": user_id},
         )
+        return result.scalar_one_or_none() is not None
diff --git a/talkingq-url/banban/dao/location.py b/talkingq-url/banban/dao/location.py
index 56aacaa..cd9b484 100644
--- a/talkingq-url/banban/dao/location.py
+++ b/talkingq-url/banban/dao/location.py
@@ -18,6 +18,21 @@ class ParentDeviceAccess:
 
 
 class LocationDAO(BaseDAO):
+    async def get_active_binding_by_device(self, *, device_id: str) -> Mapping[str, Any] | None:
+        result = await self.execute(
+            text(
+                """
+                SELECT child_id
+                FROM device_bindings
+                WHERE device_id = :device_id
+                  AND status = 1
+                LIMIT 1
+                """
+            ),
+            {"device_id": device_id},
+        )
+        return result.mappings().first()
+
     async def assert_parent_device_access(self, *, device_id: str, user_id: int) -> ParentDeviceAccess:
         from fastapi import HTTPException, status
         result = await self.execute(
@@ -321,8 +336,7 @@ class LocationDAO(BaseDAO):
         await self.execute(text(update_current_sql), params)
         await self.commit()
     
-    async def get_device_current_location(self, *, device_id: str) -> Mapping[str, Any]:
-        # sql 查询
+    async def get_current_location_by_device_id(self, *, device_id: str) -> Mapping[str, Any]:
         result = await self.execute(
             text(
                 f"""
@@ -348,4 +362,4 @@ class LocationDAO(BaseDAO):
             ),
             {"device_id": device_id},
         )
-        return result.mappings().first()
\ No newline at end of file
+        return result.mappings().first()
diff --git a/talkingq-url/banban/routers/wechat_auth.py b/talkingq-url/banban/routers/wechat_auth.py
index 78ee56e..9f4548e 100644
--- a/talkingq-url/banban/routers/wechat_auth.py
+++ b/talkingq-url/banban/routers/wechat_auth.py
@@ -32,6 +32,14 @@ class LoginResponse(BaseModel):
     token_type: str = "bearer"
     expires_in: int
     user_id: int
+    nickname: str | None = None
+
+
+def _normalize_nickname(value: str | None) -> str | None:
+    if value is None:
+        return None
+    normalized = value.strip()
+    return normalized or None
 
 
 @router.post("/login", response_model=LoginResponse)
@@ -56,20 +64,26 @@ async def login(
         )
         raise HTTPException(status_code=exc.status_code, detail=str(exc)) from exc
 
+    normalized_nickname = _normalize_nickname(payload.nickname)
     parent_service = ParentService()
     parent = await parent_service.create(
         openid=wechat_session.openid,
         unionid=wechat_session.unionid,
-        nickname=payload.nickname,
+        nickname=normalized_nickname,
         avatar_url=payload.avatar_url,
     )
     user_id = int(parent["user_id"])
 
     access_token, expires_in = create_access_token(user_id=user_id)
     logger.info("wechat login succeeded", extra={"event": "wechat_login_succeeded", "user_id": user_id})
-    return LoginResponse(access_token=access_token, expires_in=expires_in, user_id=user_id)
+    return LoginResponse(
+        access_token=access_token,
+        expires_in=expires_in,
+        user_id=user_id,
+        nickname=parent.get("nickname"),
+    )
 
 
 @router.post("/logout")
 async def logout(request: Request):
-    return {"message": "logged out"}
\ No newline at end of file
+    return {"message": "logged out"}
diff --git a/talkingq-url/banban/service/binding.py b/talkingq-url/banban/service/binding.py
index cc7b364..338de38 100644
--- a/talkingq-url/banban/service/binding.py
+++ b/talkingq-url/banban/service/binding.py
@@ -24,6 +24,13 @@ class BindingService(DatabaseServiceBase):
     def __init__(self):
         super().__init__(service_name="binding_service")
 
+    async def _ensure_device_unbound(self, db_session, device_id: str) -> None:
+        dao = BindingDAO(db_session)
+        active_binding = await dao.get_active_binding_by_device(device_id)
+        if active_binding is None:
+            return
+        raise BindingError("device is already bound, unbind it before binding again", status_code=409)
+
     async def _ensure_bindable_device(self, db_session, device_id: str, serial_number: str) -> None:
         dao = BindingDAO(db_session)
         row = await dao.get_device_auth(device_id)
@@ -50,6 +57,7 @@ class BindingService(DatabaseServiceBase):
         db_session = await self.get_session()
         try:
             await self._ensure_bindable_device(db_session, device_id, serial_number)
+            await self._ensure_device_unbound(db_session, device_id)
             dao = BindingDAO(db_session)
             bind_token, expires_at = await dao.start_bind(user_id, device_id, child_id)
             await db_session.commit()
@@ -188,6 +196,7 @@ class BindingService(DatabaseServiceBase):
         db_session = await self.get_session()
         try:
             await self._ensure_bindable_device(db_session, device_id, serial_number)
+            await self._ensure_device_unbound(db_session, device_id)
             dao = BindingDAO(db_session)
             await dao.direct_bind(device_id, child_id, user_id)
             await db_session.commit()
@@ -201,6 +210,9 @@ class BindingService(DatabaseServiceBase):
             dao = BindingDAO(db_session)
             ok = await dao.set_binding_child(device_id=device_id, child_id=child_id, user_id=user_id)
             if not ok:
+                active_binding = await dao.get_active_binding_by_device(device_id)
+                if active_binding and active_binding["child_id"] is not None:
+                    raise BindingError("device is already bound, unbind it before binding again", status_code=409)
                 raise ValueError("binding not found")
             await db_session.commit()
             return {"device_id": device_id, "child_id": child_id}
diff --git a/talkingq-url/banban/service/location.py b/talkingq-url/banban/service/location.py
index e053d84..a60b5a8 100644
--- a/talkingq-url/banban/service/location.py
+++ b/talkingq-url/banban/service/location.py
@@ -89,7 +89,7 @@ class LocationService(DatabaseServiceBase):
         db_session = await self.get_session()
         try:
             dao = LocationDAO(db_session)
-            current_row = await dao.get_device_current_location(device_id=device_id)
+            current_row = await dao.get_current_location_by_device_id(device_id=device_id)
             if current_row:
                 await dao.update(device_id=device_id, latitude=location.lat, longitude=location.lng)
                 # 更新成功加到历史记录表
@@ -98,5 +98,63 @@ class LocationService(DatabaseServiceBase):
         finally:
             await db_session.close()
 
+    async def report_mqtt_device_location(
+        self,
+        *,
+        device_id: str,
+        latitude: float | None,
+        longitude: float | None,
+        coord_type: str | None = None,
+        accuracy_m: int | None = None,
+        altitude_m: float | None = None,
+        speed_mps: float | None = None,
+        heading_deg: int | None = None,
+        source: int | None = None,
+        battery_pct: int | None = None,
+        device_time: datetime | None = None,
+    ) -> Mapping[str, Any] | None:
+        if latitude is None or longitude is None:
+            return None
+
+        @dataclass(frozen=True)
+        class _MQTTLocationPayload:
+            coord_type: str
+            lat: float
+            lng: float
+            accuracy_m: int | None
+            altitude_m: float | None
+            speed_mps: float | None
+            heading_deg: int | None
+            source: int
+            battery_pct: int | None
+            device_time: datetime
+
+        db_session = await self.get_session()
+        try:
+            dao = LocationDAO(db_session)
+            binding_row = await dao.get_active_binding_by_device(device_id=device_id)
+            if not binding_row or binding_row["child_id"] is None:
+                return None
+
+            payload = _MQTTLocationPayload(
+                coord_type=(coord_type or "gcj02").strip() or "gcj02",
+                lat=float(latitude),
+                lng=float(longitude),
+                accuracy_m=accuracy_m,
+                altitude_m=altitude_m,
+                speed_mps=speed_mps,
+                heading_deg=heading_deg,
+                source=source if source is not None else 0,
+                battery_pct=battery_pct,
+                device_time=device_time or datetime.now(),
+            )
+            return await dao.report_device_location(
+                device_id=device_id,
+                child_id=int(binding_row["child_id"]),
+                payload=payload,
+            )
+        finally:
+            await db_session.close()
+
 # 创建全局 LocationService 实例
 location_service = LocationService()