diff --git a/app.py b/app.py
index fa3c747..50e55eb 100644
--- a/app.py
+++ b/app.py
@@ -44,6 +44,7 @@ def analyze_signals():
         lights['alarm'] = False
         lights['up'] = False
         lights['down'] = False
+        all_signals.clear()
         return  # 如果急停条件满足，立即返回
 
     # 然后检查 '08' 信号
@@ -55,21 +56,24 @@ def analyze_signals():
     if '09' in all_signals:
         lights['common'] = True
     
-    if len(all_signals) >= 3 and all_signals[-3:] == ['09', '08', '09']:
-        lights['alarm'] = True
-        if all_signals[-2:] != ['08', '09']:
-            lights['alarm'] = False
-    
     if '0b' in all_signals or (len(all_signals) >= 2 and all_signals[-2:] == ['09', '0b']):
         lights['up'] = True
         if all_signals[-1:] != ['0b']:
             lights['up'] = False
+
     
     if '0d' in all_signals or (len(all_signals) >= 2 and all_signals[-2:] == ['09', '0d']):
         lights['down'] = True
         if all_signals[-1:] != ['0d']:
             lights['down'] = False
 
+
+    if len(all_signals) >= 3 and all_signals[-3:] == ['09', '08', '09']:
+        lights['alarm'] = True
+        if all_signals[-2:] != ['08', '09']:
+            lights['alarm'] = False
+        all_signals.clear()
+
 def read_serial():
     global all_signals, thread_running
     while thread_running:
@@ -175,9 +179,15 @@ def test_port():
 
 @app.route('/clear_signal_data', methods=['POST'])
 def clear_signal_data():
-    global signal_data
-    signal_data = []
-    return '', 204
+    global lights_status
+    lights_status = {
+        'common': False,
+        'alarm': False,
+        'up': False,
+        'down': False,
+        'emergency_stop': False
+    }
+    return jsonify({"success": True})
 
 if __name__ == '__main__':
     app.run(debug=True, host='0.0.0.0', port=5888)
diff --git a/static/main.js b/static/main.js
index 58c3e7c..c9eeb47 100644
--- a/static/main.js
+++ b/static/main.js
@@ -58,7 +58,7 @@ function checkAllTestsPassed() {
     allTestsPassed = Array.from(document.querySelectorAll(`#statusCheckList${currentDeviceType} .badge`))
         .every(badge => badge.style.display === 'inline-block');
     
-    // 更新测试结果
+    // 更测试结果
     updateTestResult();
 }
 
@@ -97,16 +97,24 @@ function updateRowTestResult(row) {
     const pendingSpan = label.querySelector('.pending');
     const passSpan = label.querySelector('.pass');
     const failSpan = label.querySelector('.fail');
+    const passTimeSpan = row.querySelector('.pass-time');
     
     if (allTestsPassed) {
-        checkbox.disabled = false;
-        checkbox.checked = true;
-        pendingSpan.style.display = 'none';
-        passSpan.style.display = 'inline';
-        failSpan.style.display = 'none';
-        row.classList.remove('pending-row');
-        row.classList.add('pass-row');
-        row.classList.remove('fail-row');
+        if (!checkbox.checked) {  // 只在首次通过测试时记录时间
+            checkbox.disabled = false;
+            checkbox.checked = true;
+            pendingSpan.style.display = 'none';
+            passSpan.style.display = 'inline';
+            failSpan.style.display = 'none';
+            row.classList.remove('pending-row');
+            row.classList.add('pass-row');
+            row.classList.remove('fail-row');
+            
+            // 记录合格时间
+            const now = new Date();
+            const timeString = now.toLocaleString('zh-CN', { hour12: false });
+            passTimeSpan.textContent = timeString;
+        }
     } else {
         checkbox.disabled = true;
         checkbox.checked = false;
@@ -116,6 +124,7 @@ function updateRowTestResult(row) {
         row.classList.add('pending-row');
         row.classList.remove('pass-row');
         row.classList.remove('fail-row');
+        // 不清空合格时间,保留之前记录的时间(如果有的话)
     }
 }
 
@@ -139,6 +148,7 @@ function addNewRow(button) {
     const cell1 = newRow.insertCell(0);
     const cell2 = newRow.insertCell(1);
     const cell3 = newRow.insertCell(2);
+    const cell4 = newRow.insertCell(3);
 
     cell1.innerHTML = '<input type="text" class="form-control serial-number" placeholder="输入设备序列号">';
     cell2.innerHTML = `
@@ -150,17 +160,24 @@ function addNewRow(button) {
                 <span class="fail" style="display: none;">不合格</span>
             </label>
         </div>`;
-    cell3.innerHTML = '<button class="btn btn-primary add-row-btn" onclick="addNewRow(this)">增加下一条</button>';
+    cell3.innerHTML = '<span class="pass-time"></span>';
+    cell4.innerHTML = '<button class="btn btn-primary add-row-btn" onclick="addNewRow(this)">增加下一条</button>';
 
     // 重置表单和状态
     resetForm();
 
-    // 聚焦到新的设备序列号输入框
-    const newSerialInput = newRow.querySelector('.serial-number');
-    newSerialInput.focus();
+    // 重置灯光状态监控
+    resetLights();
+
+    // 重置检测状态记录
+    resetCheckList();
 
     // 清空app.py的信号数据
     clearSignalData();
+
+    // 聚焦到新的设备序列号输入框
+    const newSerialInput = newRow.querySelector('.serial-number');
+    newSerialInput.focus();
 }
 
 function finalizeRowStatus(row) {
@@ -173,22 +190,13 @@ function finalizeRowStatus(row) {
     checkbox.disabled = true;
 }
 
-function resetForm() {
-    // 重置测试结果为待测试状态
-    resetTestResult();
-
-    // 重置检测状态记录
-    resetDetectionStatus();
-
-    // 重置灯光状态
-    resetLightStatus();
-}
-
+//重置测试结果  
 function resetTestResult() {
     allTestsPassed = false;
     updateTestResult();
 }
 
+//重置检测状态记录
 function resetDetectionStatus() {
     lightHistory = {
         common: false,
@@ -208,6 +216,7 @@ function resetDetectionStatus() {
     }
 }
 
+//重置灯光状态
 function resetLightStatus() {
     const lights = document.querySelectorAll('.light');
     lights.forEach(light => {
@@ -216,14 +225,31 @@ function resetLightStatus() {
     });
 }
 
+function resetForm() {
+    // 重置测试结果为待测试状态
+    resetTestResult();
+
+    // 重置检测状态记录
+    resetDetectionStatus();
+
+    // 重置灯光状态
+    resetLightStatus();
+}
+
 function clearSignalData() {
-    fetch('/clear_signal_data', {
-        method: 'POST',
-    }).then(response => {
-        if (!response.ok) {
-            console.error('清空信号数据失败');
-        }
-    });
+    // 发送请求到后端清空信号数据
+    fetch('/clear_signal_data', { method: 'POST' })
+        .then(response => response.json())
+        .then(data => {
+            if (data.success) {
+                console.log('信号数据已清空');
+            } else {
+                console.error('清空信号数据失败');
+            }
+        })
+        .catch(error => {
+            console.error('清空信号数据时发生错误:', error);
+        });
 }
 
 function exportToExcel() {
@@ -242,20 +268,21 @@ function exportToExcel() {
     data.push(['测试日期', testDate]);
     data.push([]);  // 空行
     
-    const headers = ['设备序列号', '测试结果'];
+    const headers = ['设备序列号', '测试结果', '合格时间'];
     data.push(headers);
     
     for (let i = 1; i < table.rows.length; i++) {
         const row = table.rows[i];
         const serialNumber = row.cells[0].querySelector('input').value;
         const testResult = row.cells[1].querySelector('input').checked ? '合格' : '不合格';
-        data.push([serialNumber, testResult]);
+        const passTime = row.cells[2].querySelector('.pass-time').textContent;
+        data.push([serialNumber, testResult, passTime]);
     }
     
     const wb = XLSX.utils.book_new();
     const ws = XLSX.utils.aoa_to_sheet(data);
     
-    const colWidth = [{ wch: 20 }, { wch: 20 }];
+    const colWidth = [{ wch: 20 }, { wch: 10 }, { wch: 20 }];
     ws['!cols'] = colWidth;
 
     XLSX.utils.book_append_sheet(wb, ws, "测试结果");
@@ -405,5 +432,5 @@ document.addEventListener('DOMContentLoaded', function() {
     updateDeviceTypeDisplay();
     
     // 每100毫秒更新一次灯光状态
-    setInterval(updateLights, 100);
+    setInterval(updateLights, 300);
 });
diff --git a/static/styles.css b/static/styles.css
index 3b6f5d2..f2c1b58 100644
--- a/static/styles.css
+++ b/static/styles.css
@@ -64,8 +64,8 @@ body {
 }
 
 .light.emergency_stop.on {
-    background-color: #007bff; /* 蓝色 */
-    box-shadow: 0 0 20px 5px rgba(0, 123, 255, 0.5);
+    background-color: #9d002c; /* 深红色 */
+    box-shadow: 0 0 20px 5px rgba(157, 0, 44, 0.5);
 }
 
 .light.up.on {
diff --git a/templates/index.html b/templates/index.html
index 7dc97ed..3652721 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -119,10 +119,6 @@
                                 <div class="light common off" id="common-4"></div>
                                 <p>公共灯</p>
                             </div>
-                            <div class="light-item">
-                                <div class="light emergency_stop off" id="emergency_stop-4"></div>
-                                <p>急停灯</p>
-                            </div>
                             <div class="light-item">
                                 <div class="light up off" id="up-4"></div>
                                 <p>上行灯</p>
@@ -131,6 +127,10 @@
                                 <div class="light down off" id="down-4"></div>
                                 <p>下行灯</p>
                             </div>
+                            <div class="light-item">
+                                <div class="light emergency_stop off" id="emergency_stop-4"></div>
+                                <p>急停灯</p>
+                            </div>
                         </div>
                     </div>
                 </div>
@@ -195,6 +195,7 @@
                         <tr>
                             <th>设备序列号</th>
                             <th>测试结果</th>
+                            <th>合格时间</th>
                             <th>操作</th>
                         </tr>
                     </thead>
@@ -211,6 +212,7 @@
                                     </label>
                                 </div>
                             </td>
+                            <td><span class="pass-time"></span></td>
                             <td><button class="btn btn-primary add-row-btn" onclick="addNewRow(this)">增加下一条</button></td>
                         </tr>
                     </tbody>