diff --git a/apps/iot/include/iot.hrl b/apps/iot/include/iot.hrl
index 7b52175..7d3cf30 100644
--- a/apps/iot/include/iot.hrl
+++ b/apps/iot/include/iot.hrl
@@ -60,6 +60,8 @@
     name :: binary(),
     %% 当前最新值
     last_value = 0 :: number(),
+    %% 单位, 如电压: a、v
+    unit :: any(),
     %% 历史值序列, 队列；保存最近的100数值, 格式为: [{ts, value}]
     queue = [] :: queus:queue(),
     %% 最后更新时间
@@ -129,7 +131,7 @@
 }).
 
 %% 微服务表
--record(microservice, {
+-record(service, {
     %% ID, 基于UUID生成
     service_id :: binary(),
     %% 关联主机
diff --git a/apps/iot/src/iot_message_handler.erl b/apps/iot/src/iot_message_handler.erl
index 3ae1e0f..e5edd9d 100644
--- a/apps/iot/src/iot_message_handler.erl
+++ b/apps/iot/src/iot_message_handler.erl
@@ -88,10 +88,11 @@ handle(<<"server.data">>, #{<<"c_id">> := HostId, <<"d">> := Data}) ->
             lager:debug("the data is: ~p", [Infos]),
 
             %% 一次可能提前多组数据
-            lists:foreach(fun(#{<<"service_name">> := ServiceName, <<"time">> := Time, <<"data">> := Items}) ->
-                case lists:search(fun(#microservice{name = Name}) -> Name =:= ServiceName end, Services) of
-                    {value, Service=#microservice{metrics = Metrics}} ->
+            lists:foreach(fun(#{<<"service_name">> := ServiceName, <<"data">> := Items}) ->
+                case lists:search(fun(#service{name = Name}) -> Name =:= ServiceName end, Services) of
+                    {value, Service=#service{metrics = Metrics}} ->
                         %% 更新数据
+                        NMetrics = lists:foldl(fun(MetricData, MetricsAcc) -> append_metric(MetricsAcc, MetricData) end, Metrics, Items),
 
 
 
@@ -119,16 +120,21 @@ handle(<<"server.data">>, #{<<"c_id">> := HostId, <<"d">> := Data}) ->
     ok.
 
 
-append_metric(Metrics, MetricName, MetricSymbol, MetricValue, Ts) ->
-    case lists:any(fun(#service_metric{symbol = Symbol}) -> Symbol =:= MetricSymbol end, Metrics) of
+append_metric(Metrics, MetricData) when is_map(MetricData) ->
+    Name = maps:get(<<"name">>, MetricData, <<"">>),
+    Symbol = maps:get(<<"symbol">>, MetricData, <<"">>),
+    Value = maps:get(<<"value">>, MetricData),
+    Ts = maps:get(<<"time">>, MetricData, 0),
+
+    case lists:any(fun(#service_metric{symbol = Symbol0}) -> Symbol =:= Symbol0 end, Metrics) of
         true ->
-            lists:map(fun(Metric=#service_metric{symbol = Symbol, queue = Q}) ->
-                case Symbol =:= MetricSymbol of
+            lists:map(fun(Metric=#service_metric{symbol = Symbol0, queue = Q}) ->
+                case Symbol =:= Symbol0 of
                     true ->
-                        Q1 = iot_util:queue_limited_in({Ts, MetricValue}, Q, 100),
+                        Q1 = iot_util:queue_limited_in({Ts, Value}, Q, 100),
                         Metric#service_metric{
-                            name = MetricName,
-                            last_value = MetricValue,
+                            name = Name,
+                            last_value = Value,
                             update_ts = Ts,
                             queue = Q1
                         };
@@ -139,11 +145,11 @@ append_metric(Metrics, MetricName, MetricSymbol, MetricValue, Ts) ->
         false ->
             Q0 = queue:new(),
             Metric = #service_metric{
-                name = MetricName,
-                symbol = MetricSymbol,
-                last_value = MetricValue,
+                name = Name,
+                symbol = Symbol,
+                last_value = Value,
                 update_ts = Ts,
-                queue = queue:in({Ts, MetricValue}, Q0)
+                queue = queue:in({Ts, Value}, Q0)
             },
             Metrics ++ [Metric]
     end.
diff --git a/apps/iot/src/model/microservice_model.erl b/apps/iot/src/model/microservice_model.erl
index c968474..35bcaf7 100644
--- a/apps/iot/src/model/microservice_model.erl
+++ b/apps/iot/src/model/microservice_model.erl
@@ -16,7 +16,7 @@
 
 get_service(HostId, ServiceName) when is_binary(HostId), is_binary(ServiceName) ->
     Fun = fun() ->
-        Q = qlc:q([E || E <- mnesia:table(microservice), E#microservice.host_id =:= HostId, E#microservice.name =:= ServiceName]),
+        Q = qlc:q([E || E <- mnesia:table(microservice), E#service.host_id =:= HostId, E#service.name =:= ServiceName]),
         qlc:e(Q)
           end,
     case mnesia:transaction(Fun) of
@@ -28,7 +28,7 @@ get_service(HostId, ServiceName) when is_binary(HostId), is_binary(ServiceName)
 
 get_services(HostId) when is_binary(HostId) ->
     Fun = fun() ->
-        Q = qlc:q([E || E <- mnesia:table(microservice), E#microservice.host_id =:= HostId]),
+        Q = qlc:q([E || E <- mnesia:table(microservice), E#service.host_id =:= HostId]),
         qlc:e(Q)
           end,
     case mnesia:transaction(Fun) of
@@ -38,7 +38,7 @@ get_services(HostId) when is_binary(HostId) ->
             []
     end.
 
-add_service(Service = #microservice{}) ->
+add_service(Service = #service{}) ->
     case mnesia:transaction(fun() -> mnesia:write(microservice, Service, write) end) of
         {atomic, _} ->
             ok;
@@ -52,7 +52,7 @@ change_status(ServiceId, Status) when is_binary(ServiceId), is_integer(Status) -
             [] ->
                 mnesia:abort(<<"host not found">>);
             [Service] ->
-                NService = Service#microservice{status = Status},
+                NService = Service#service{status = Status},
                 mnesia:write(microservice, NService, write)
         end
           end,
@@ -63,7 +63,7 @@ change_status(ServiceId, Status) when is_binary(ServiceId), is_integer(Status) -
             {error, Reason}
     end.
 
-update_metric(TerminalId, MetricName, MetricSymbol, MetricValue) when is_binary(TerminalId), is_binary(MetricName), is_binary(MetricSymbol), is_number(MetricValue) ->
+update_metric(ServiceId, Metrics) when is_binary(ServiceId), is_list(Metrics) ->
     Fun = fun() ->
         case mnesia:read(terminal, TerminalId) of
             [] ->