diff --git a/Src/Dlhis.Basic/Device/Controllers/DevicesConnectController.cs b/Src/Dlhis.Basic/Device/Controllers/DevicesConnectController.cs
index d7526017..e2b3bfe0 100644
--- a/Src/Dlhis.Basic/Device/Controllers/DevicesConnectController.cs
+++ b/Src/Dlhis.Basic/Device/Controllers/DevicesConnectController.cs
@@ -1,4 +1,5 @@
-using Dlhis.Basic.Device.Dtos;
+using System.ComponentModel.DataAnnotations;
+using Dlhis.Basic.Device.Dtos;
 using Dlhis.Basic.Device.Request;
 using Dlhis.Basic.Device.Services;
 using Kurisu.AspNetCore.DataAccess.SqlSugar.Aop;
@@ -66,4 +67,15 @@ public class DevicesConnectController : ControllerBase
     {
         return await _deviceConnectService.GetOnlineDeviceUniqueInfoAsync();
     }
+
+    /// <summary>
+    /// 获取品牌设备
+    /// </summary>
+    /// <param name="brand"></param>
+    /// <returns></returns>
+    [HttpGet("brand-devices")]
+    public async Task<List<DeviceUniqueWithConnectionInfoDto>> GetDeviceUniqueInfoByBrandAsync([Required(ErrorMessage = "请明确设备品牌")] string brand)
+    {
+        return await _deviceConnectService.GetDeviceUniqueInfoByBrandAsync(brand);
+    }
 }
\ No newline at end of file
diff --git a/Src/Dlhis.Basic/Device/Services/IDeviceConnectService.cs b/Src/Dlhis.Basic/Device/Services/IDeviceConnectService.cs
index e70b94f9..9e3304bc 100644
--- a/Src/Dlhis.Basic/Device/Services/IDeviceConnectService.cs
+++ b/Src/Dlhis.Basic/Device/Services/IDeviceConnectService.cs
@@ -46,4 +46,11 @@ public interface IDeviceConnectService : IScopeDependency
     /// </summary>
     /// <returns></returns>
     Task<List<DeviceUniqueWithConnectionInfoDto>> GetOnlineDeviceUniqueInfoAsync();
+
+    /// <summary>
+    /// 根据品牌获取设备信息
+    /// </summary>
+    /// <param name="brand"></param>
+    /// <returns></returns>
+    Task<List<DeviceUniqueWithConnectionInfoDto>> GetDeviceUniqueInfoByBrandAsync(string brand);
 }
\ No newline at end of file
diff --git a/Src/Dlhis.Basic/Device/Services/Implements/DeviceConnectService.cs b/Src/Dlhis.Basic/Device/Services/Implements/DeviceConnectService.cs
index a797bf00..ba73cb91 100644
--- a/Src/Dlhis.Basic/Device/Services/Implements/DeviceConnectService.cs
+++ b/Src/Dlhis.Basic/Device/Services/Implements/DeviceConnectService.cs
@@ -115,7 +115,7 @@ public class DeviceConnectService : IDeviceConnectService
     {
         return await _dbContext.Queryable<DeviceEntity>()
             .LeftJoin<DeviceRegistryEntity>((d, dr) => d.UniqueNo == dr.DeviceUniqueNo)
-            .Where((d, dr) => d.Enable && SqlFunc.DateAdd(dr.LastHeartbeatTime, SqlFunc.IIF(d.HeartbeatInterval == 0, 30, 30), DateType.Second) > DateTime.Now)
+            .Where((d, dr) => d.Enable && (d.HeartbeatInterval == 0 || SqlFunc.DateAdd(dr.LastHeartbeatTime, d.HeartbeatInterval, DateType.Second) > DateTime.Now))
             .Select((d, dr) => new DeviceUniqueWithConnectionInfoDto
             {
                 DeviceUnique = d.UniqueNo,
@@ -123,6 +123,19 @@ public class DeviceConnectService : IDeviceConnectService
             })
             .ToListAsync();
     }
+    
+    public async Task<List<DeviceUniqueWithConnectionInfoDto>> GetDeviceUniqueInfoByBrandAsync(string brand)
+    {
+        return await _dbContext.Queryable<DeviceEntity>()
+            .LeftJoin<DeviceTemplateEntity>((d, dt) => d.TemplateCode == dt.Code)
+            .Where((d, dt) => dt.Brand == brand)
+            .Select(d => new DeviceUniqueWithConnectionInfoDto
+            {
+                DeviceUnique = d.UniqueNo,
+                ConnectionInfo = d.ConnectionInfo
+            })
+            .ToListAsync();
+    }
 
 
     //******************************************************** help methods **********************************************************