diff --git a/data/computercraft/lua/rom/programs/chest_sorter.lua b/data/computercraft/lua/rom/programs/chest_sorter.lua
index 624f451..327da21 100644
--- a/data/computercraft/lua/rom/programs/chest_sorter.lua
+++ b/data/computercraft/lua/rom/programs/chest_sorter.lua
@@ -27,11 +27,30 @@ term.setBackgroundColor(old_bg)
 term.at(1, 2)
 
 -- 检查是否有比较器(comparator)连接
-local comparator = peripheral.find("comparator")
+local comparator = nil
 local peripherals = peripheral.getNames()
 
+-- 尝试通过不同方式查找比较器
+for _, name in ipairs(peripherals) do
+  local p_type = peripheral.getType(name)
+  -- 检查类型是否包含'comparator'或'redstone'关键字
+  if string.find(p_type, "comparator") or string.find(p_type, "redstone") then
+    comparator = peripheral.wrap(name)
+    print(colors.green .. "Found potential comparator: " .. name .. " (Type: " .. p_type .. ")" .. colors.white)
+    break
+  end
+end
+
+-- 如果上述方法失败，尝试直接使用peripheral.find
 if not comparator then
-  -- 如果没有找到比较器，列出所有连接的外围设备
+  comparator = peripheral.find("comparator")
+  if comparator then
+    print(colors.green .. "Comparator detected using peripheral.find!" .. colors.white)
+  end
+end
+
+if not comparator then
+  -- 如果仍然没有找到比较器，列出所有连接的外围设备
   print(colors.red .. "No comparator detected!" .. colors.white)
   if #peripherals > 0 then
     print(colors.yellow .. "Connected peripherals:" .. colors.white)
@@ -43,8 +62,6 @@ if not comparator then
     print(colors.red .. "No peripherals detected at all." .. colors.white)
   end
   error("Please connect a comparator to the computer.", 0)
-else
-  print(colors.green .. "Comparator detected!" .. colors.white)
 end
 
 -- 存储所有连接的外围设备名称
@@ -171,10 +188,9 @@ local function autoSort()
   print(colors.green .. "Starting auto-sorting..." .. colors.white)
   print("Press Ctrl+T to stop.")
 
-  -- 获取比较器对象
-  local comparator = peripheral.wrap(peripheral.find("comparator"))
+  -- 检查全局比较器对象是否有效
   if not comparator then
-    print(colors.red .. "Failed to wrap comparator." .. colors.white)
+    print(colors.red .. "Comparator not available." .. colors.white)
     return
   end
 
diff --git a/data/computercraft/lua/rom/programs/test_comparator.lua b/data/computercraft/lua/rom/programs/test_comparator.lua
index 0f2aed3..e4a3387 100644
--- a/data/computercraft/lua/rom/programs/test_comparator.lua
+++ b/data/computercraft/lua/rom/programs/test_comparator.lua
@@ -1,17 +1,60 @@
--- Simple comparator test program
+-- Improved comparator test program
 local peripheral = require("peripheral")
 local term = require("term")
 local colors = require("colors")
+local string = require("string")
 
-print(colors.green .. "=== Comparator Test ===" .. colors.white)
+print(colors.green .. "=== Improved Comparator Test ===" .. colors.white)
 
--- 查找比较器
-local comparator = peripheral.find("comparator")
-if not comparator then
-  print(colors.red .. "No comparator detected!" .. colors.white)
+-- 尝试通过不同方式查找比较器
+local comparator = nil
+local peripherals = peripheral.getNames()
+local comparator_found = false
 
-  -- 列出所有连接的外围设备
-  local peripherals = peripheral.getNames()
+print(colors.blue .. "Searching for comparator..." .. colors.white)
+
+-- 方法1: 检查所有外围设备的类型
+for _, name in ipairs(peripherals) do
+  local p_type = peripheral.getType(name)
+  print("Checking peripheral: " .. name .. " (Type: " .. p_type .. ")")
+  
+  -- 检查类型是否包含'comparator'或'redstone'关键字
+  if string.find(p_type, "comparator") or string.find(p_type, "redstone") then
+    comparator = peripheral.wrap(name)
+    print(colors.green .. "Found potential comparator: " .. name .. " (Type: " .. p_type .. ")" .. colors.white)
+    comparator_found = true
+    break
+  end
+end
+
+-- 方法2: 如果上述方法失败，尝试直接使用peripheral.find
+if not comparator_found then
+  print(colors.yellow .. "Method 1 failed. Trying peripheral.find..." .. colors.white)
+  comparator = peripheral.find("comparator")
+  if comparator then
+    print(colors.green .. "Comparator detected using peripheral.find!" .. colors.white)
+    comparator_found = true
+  end
+end
+
+-- 显示结果
+if comparator_found then
+  print(colors.green .. "=== Comparator Test Results ===" .. colors.white)
+  print("Comparator found: YES")
+  
+  -- 尝试获取比较器信号
+  local signal = comparator.getOutputSignal()
+  print("Output signal level: " .. signal)
+  
+  if signal > 0 then
+    print(colors.blue .. "Comparator is detecting items in connected chests." .. colors.white)
+  else
+    print(colors.yellow .. "Comparator is not detecting any items. Try adding items to a chest." .. colors.white)
+  end
+else
+  print(colors.red .. "=== Comparator Test Results ===" .. colors.white)
+  print("Comparator found: NO")
+  
   if #peripherals > 0 then
     print(colors.yellow .. "Connected peripherals:" .. colors.white)
     for _, name in ipairs(peripherals) do
@@ -21,10 +64,6 @@ if not comparator then
   else
     print(colors.red .. "No peripherals detected at all." .. colors.white)
   end
-else
-  print(colors.green .. "Comparator detected!" .. colors.white)
-  print("Comparator type: " .. peripheral.getType(peripheral.find("comparator")))
-  print("Output signal level: " .. comparator.getOutputSignal())
 end
 
 print(colors.blue .. "Test completed." .. colors.white)
\ No newline at end of file
diff --git a/installer.lua b/installer.lua
index 0a6a218..b755717 100644
--- a/installer.lua
+++ b/installer.lua
@@ -1,5 +1,5 @@
 -- LeonOS installer
-local INSTALLER_VERSION = "0.3.8 Beta 20"
+local INSTALLER_VERSION = "0.3.8 Beta 21"
 local DEFAULT_ROM_DIR = "/leonos"
 
 print("Start loading LeonOS installer ("..INSTALLER_VERSION..")...")