diff --git a/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51.Test/JT808.Protocol.Extensions.GPS51.Test.csproj b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51.Test/JT808.Protocol.Extensions.GPS51.Test.csproj
new file mode 100644
index 0000000..500bf2a
--- /dev/null
+++ b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51.Test/JT808.Protocol.Extensions.GPS51.Test.csproj
@@ -0,0 +1,22 @@
+
+
+
+ net8.0
+
+
+
+
+
+
+
+
+ all
+ runtime; build; native; contentfiles; analyzers; buildtransitive
+
+
+
+
+
+
+
+
diff --git a/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51.Test/JT808_0x0200_0x2B_Ext_Test.cs b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51.Test/JT808_0x0200_0x2B_Ext_Test.cs
new file mode 100644
index 0000000..3c48ff4
--- /dev/null
+++ b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51.Test/JT808_0x0200_0x2B_Ext_Test.cs
@@ -0,0 +1,60 @@
+using JT808.Protocol.Extensions.GPS51.MessageBody;
+using JT808.Protocol.MessageBody;
+using Microsoft.Extensions.DependencyInjection;
+using System;
+using System.Collections.Generic;
+using Xunit;
+
+namespace JT808.Protocol.Extensions.GPS51.Test
+{
+ public class JT808_0x0200_0x2B_Ext_Test
+ {
+ JT808Serializer JT808Serializer;
+ public JT808_0x0200_0x2B_Ext_Test()
+ {
+ ServiceCollection serviceDescriptors = new ServiceCollection();
+ serviceDescriptors.AddJT808Configure()
+ .AddGPS51Configure();
+
+ IJT808Config jT808Config = serviceDescriptors.BuildServiceProvider().GetRequiredService();
+ JT808Serializer = new JT808Serializer(jT808Config);
+ }
+ [Fact]
+ public void Serializer()
+ {
+ JT808_0x0200 jT808UploadLocationRequest = new JT808_0x0200
+ {
+ AlarmFlag = 1,
+ Altitude = 40,
+ GPSTime = DateTime.Parse("2018-07-15 10:10:10"),
+ Lat = 12222222,
+ Lng = 132444444,
+ Speed = 60,
+ Direction = 0,
+ StatusFlag = 2,
+ CustomLocationAttachData = new Dictionary()
+ };
+ jT808UploadLocationRequest.CustomLocationAttachData.Add(JT808_GPS51_Constants.JT808_0x0200_0x2B, new JT808_0x0200_0x2B_Ext
+ {
+ AttachInfoId = 0x2b,
+ AttachInfoLength = 4,
+ Oils = new List {
+ 12,34
+ }
+ });
+ var hex = JT808Serializer.Serialize(jT808UploadLocationRequest).ToHexString();
+ Assert.Equal("000000010000000200BA7F0E07E4F11C0028003C00001807151010102B04000C0022", hex);
+ }
+ [Fact]
+ public void Deserialize()
+ {
+ var jT808UploadLocationRequest = JT808Serializer.Deserialize("7e020000470412106280030233000000000000200201d365df072f15d500280000002d21091719155801040002a10f2a0200042b049203a46f520103eb06000100ce0a5730011b31010951080000000000000000ca7e".ToHexBytes());
+ var body0200 = jT808UploadLocationRequest.Bodies as JT808_0x0200;
+ body0200.CustomLocationAttachData.TryGetValue(JT808_GPS51_Constants.JT808_0x0200_0x2B, out var value);
+ var jt808_0x0200_0x2b = value as JT808_0x0200_0x2B_Ext;
+ //2b049203a46f
+ Assert.Equal(0x9203, jt808_0x0200_0x2b.Oils[0]);
+ Assert.Equal(0xa46f, jt808_0x0200_0x2b.Oils[1]);
+ }
+ }
+}
diff --git a/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51.Test/JT808_0x0200_0x51_Test.cs b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51.Test/JT808_0x0200_0x51_Test.cs
new file mode 100644
index 0000000..a295e47
--- /dev/null
+++ b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51.Test/JT808_0x0200_0x51_Test.cs
@@ -0,0 +1,63 @@
+using JT808.Protocol.Extensions.GPS51.MessageBody;
+using JT808.Protocol.MessageBody;
+using Microsoft.Extensions.DependencyInjection;
+using System;
+using System.Collections.Generic;
+using Xunit;
+
+namespace JT808.Protocol.Extensions.GPS51.Test
+{
+ public class JT808_0x0200_0x51_Test
+ {
+ JT808Serializer JT808Serializer;
+ public JT808_0x0200_0x51_Test()
+ {
+ ServiceCollection serviceDescriptors = new ServiceCollection();
+ serviceDescriptors.AddJT808Configure()
+ .AddGPS51Configure();
+
+ IJT808Config jT808Config = serviceDescriptors.BuildServiceProvider().GetRequiredService();
+ JT808Serializer = new JT808Serializer(jT808Config);
+ }
+ [Fact]
+ public void Serializer()
+ {
+ JT808_0x0200 jT808UploadLocationRequest = new JT808_0x0200
+ {
+ AlarmFlag = 1,
+ Altitude = 40,
+ GPSTime = DateTime.Parse("2018-07-15 10:10:10"),
+ Lat = 12222222,
+ Lng = 132444444,
+ Speed = 60,
+ Direction = 0,
+ StatusFlag = 2,
+ CustomLocationAttachData = new Dictionary()
+ };
+ jT808UploadLocationRequest.CustomLocationAttachData.Add(JT808_GPS51_Constants.JT808_0x0200_0x51, new JT808_0x0200_0x51
+ {
+ AttachInfoId = 0x2b,
+ AttachInfoLength = 4,
+ Temperatures = new List {
+ 12,-34
+ }
+ });
+ var hex = JT808Serializer.Serialize(jT808UploadLocationRequest).ToHexString();
+ Assert.Equal("000000010000000200BA7F0E07E4F11C0028003C00001807151010102B04000C0022", hex);
+ }
+ [Fact]
+ public void Deserialize()
+ {
+ var jT808UploadLocationRequest = JT808Serializer.Deserialize("7e020000470158666660580571000000000000000201d59c1c06a36599006e0000000021091719313901040000eb8830011d3101192a0200005201002b040000000051080134011a04f604f6eb06000400ce04f8847e".ToHexBytes());
+ var body0200 = jT808UploadLocationRequest.Bodies as JT808_0x0200;
+ body0200.CustomLocationAttachData.TryGetValue(JT808_GPS51_Constants.JT808_0x0200_0x51, out var value);
+ var jt808_0x0200_0x51 = value as JT808_0x0200_0x51;
+ //2b049203a46f
+ Assert.Equal(0x0134, jt808_0x0200_0x51.Temperatures[0]);
+ Assert.Equal(0x011A, jt808_0x0200_0x51.Temperatures[1]);
+ Assert.Equal(0x04F6, jt808_0x0200_0x51.Temperatures[2]);
+ Assert.Equal(0x04F6, jt808_0x0200_0x51.Temperatures[3]);
+
+ }
+ }
+}
diff --git a/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/DependencyInjectionExtensions.cs b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/DependencyInjectionExtensions.cs
new file mode 100644
index 0000000..3ef4f84
--- /dev/null
+++ b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/DependencyInjectionExtensions.cs
@@ -0,0 +1,30 @@
+using JT808.Protocol.Extensions.GPS51.Enums;
+using JT808.Protocol.Extensions.GPS51.MessageBody;
+using JT808.Protocol.Interfaces;
+using JT808.Protocol.MessageBody;
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+using System.Text;
+
+namespace JT808.Protocol.Extensions.GPS51
+{
+ ///
+ /// GPS51 extension JT/T808
+ ///
+ public static class DependencyInjectionExtensions
+ {
+ ///
+ /// 注册GPS51扩展JT/T808
+ /// Register GPS51 extension JT/T808
+ ///
+ ///
+ ///
+ public static IJT808Builder AddGPS51Configure(this IJT808Builder jT808Builder)
+ {
+ jT808Builder.Config.JT808_0X0200_Factory.Map.Remove(JT808_GPS51_Constants.JT808_0x0200_0x2B);
+ jT808Builder.Config.Register(Assembly.GetExecutingAssembly());
+ return jT808Builder;
+ }
+ }
+}
diff --git a/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/Enums/ActivePhotographyStrategyType.cs b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/Enums/ActivePhotographyStrategyType.cs
new file mode 100644
index 0000000..c90e6db
--- /dev/null
+++ b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/Enums/ActivePhotographyStrategyType.cs
@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace JT808.Protocol.Extensions.GPS51.Enums
+{
+ ///
+ /// 主动拍照策略
+ /// Active photo taking strategy
+ ///
+ public enum ActivePhotographyStrategyType:byte
+ {
+ ///
+ /// 不开启
+ /// Is not enabled
+ ///
+ not_enabled = 0x00,
+ ///
+ /// 定时拍照
+ /// Camera Timer
+ ///
+ camera_timer = 0x01,
+ ///
+ /// 定距拍照
+ /// Distance take photos
+ ///
+ distance_take_photos = 0x02,
+ ///
+ /// 保留
+ /// reserve
+ ///
+ reserve = 0x03,
+ ///
+ /// 不修改参数
+ /// Do not Modify parameters
+ ///
+ not_modify_parameters = 0xFF
+ }
+}
diff --git a/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/JT808.Protocol.Extensions.GPS51.csproj b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/JT808.Protocol.Extensions.GPS51.csproj
new file mode 100644
index 0000000..f07903e
--- /dev/null
+++ b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/JT808.Protocol.Extensions.GPS51.csproj
@@ -0,0 +1,11 @@
+
+
+
+ netstandard2.0
+
+
+
+
+
+
+
diff --git a/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/JT808_GPS51_Constants.cs b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/JT808_GPS51_Constants.cs
new file mode 100644
index 0000000..217ec79
--- /dev/null
+++ b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/JT808_GPS51_Constants.cs
@@ -0,0 +1,121 @@
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+using System.Text;
+
+namespace JT808.Protocol.Extensions.GPS51
+{
+ ///
+ /// 主动安全常量
+ ///
+ public static class JT808_GPS51_Constants
+ {
+ ///
+ /// 附加信息ID 多路油耗模拟量,
+ /// 2*N
+ /// 例子报文:2b049203a46f
+ /// 解析结果为:2路 模拟量分别为37379 42095
+ ///
+ public const byte JT808_0x0200_0x2B = 0x2b;
+ ///
+ /// 附加信息ID 2个字节一组温度 0.1度 ffff 代表无效,
+ /// 2*N
+ /// 04F6代表未接或者传感器掉电,
+ /// 第16位代表正负温度 51080134011A04F604F6
+ /// 308=30.8度 282=28.2度 8050=-80=-8度
+ ///
+ public const byte JT808_0x0200_0x51 = 0x51;
+ ///
+ /// 附加信息ID
+ /// 1
+ /// 正反转 0:未知;1:正转(空车)2:反转(重车);3:停转
+ /// 例子解析为:03
+ ///
+ public const byte JT808_0x0200_0x52 = 0x52;
+ ///
+ /// 附加信息ID
+ /// 1+7*N
+ /// Wifi数据:第1个字节wifi个数,后面为n个wifi数据;
+ /// WIFI数据:6字节 wifiMac 1字节 信号强度
+ ///
+ public const byte JT808_0x0200_0x54 = 0x54;
+ ///
+ /// 载重扩展 8
+ /// 1/10千克 8 字节
+ ///
+ public const uint JT808_0x0200_0x55 = 0x55;
+ ///
+ /// 湿度,
+ /// 2*N
+ /// 精度0.1,0fff 代表无效数据,例子数据: 0012 表示:1.8%
+ ///
+ public const uint JT808_0x0200_0x58 = 0x58;
+ ///
+ /// 电压,
+ /// 2
+ /// 单位0.01V,例子报文:61021d74,解析结果7540,最终电压75.40V
+ ///
+ public const uint JT808_0x0200_0x61 = 0x61;
+ ///
+ /// 基站编码
+ /// 4+7*N
+ /// 的格式为 MCC MNC LAC CI Signal 2-2-2-4-1-2-4-1,
+ /// 其中MCC 2个字节国家编码,MNC 为 2个字节网络编码,LAC为 2个字节地区编码,
+ /// CI 为 4个字节蜂窝 ID ,
+ /// 信号强度 1字节,
+ /// 单基站可以不用信号强度 1cc-0-696a-863a8d0-0
+ ///
+ public const uint JT808_0x0200_0xe1 = 0xe1;
+ ///
+ /// 版本号,
+ /// N
+ /// 开机或者重连第一条上报,例子结果:GB201-GSM-21001-1.1.1
+ ///
+ public const byte JT808_0x0200_0xe2 = 0xe2;
+ ///
+ /// iccid,
+ /// 20
+ /// 一般开机或者重连第一条0200位置信息上报,
+ /// 例子报文:f1143839383630343032313032303930393737303032,
+ /// 解析结果为:89860402102090977002
+ ///
+ public const byte JT808_0x0200_0xf1 = 0xf1;
+ ///
+ /// IMEI数据:
+ /// 8字节,
+ /// 第1位为0,后面15位为imei的16进制数据
+ ///
+ public const byte JT808_0x0200_0xf6 = 0xf6;
+ ///
+ /// 4
+ /// 第0位:震动报警
+ /// 第1位:拆除报警 例子:第0位:震动报警 fa0400000001 第1位:拆除报警 fa0400000002
+ /// 第2位:进入深度休眠 fa0400000004
+ /// 第3位:急加速 fa0400000008
+ /// 第4位:急减速 fa0400000010
+ /// 第5位:急转弯 fa0400000020
+ /// 第6位:acc开报警 fa0400000040
+ /// 第7位:acc关报警 fa0400000080
+ /// 第8位:内部电池电量低fa0400000100
+ /// 第9位:人为关机
+ /// 第10位:低电关机
+ ///
+ public const byte JT808_0x0200_0xfa = 0xfa;
+ ///
+ /// 4
+ /// 电量百分比和外部电压,
+ /// 电压精度0.01V,充电状态0未充电 1充电中,没有的数据传00
+ /// 例子:fb045F050701
+ /// 解析结果:电量百分比5F=95 电压:0507=1287 最终显示为12.87V 01:充电中
+ ///
+ public const byte JT808_0x0200_0xfb = 0xfb;
+ ///
+ ///
+ ///
+ ///
+ public static Assembly GetCurrentAssembly()
+ {
+ return Assembly.GetExecutingAssembly();
+ }
+ }
+}
diff --git a/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/MessageBody/JT808_0x0200_0x2B_Ext.cs b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/MessageBody/JT808_0x0200_0x2B_Ext.cs
new file mode 100644
index 0000000..936ba8c
--- /dev/null
+++ b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/MessageBody/JT808_0x0200_0x2B_Ext.cs
@@ -0,0 +1,84 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using JT808.Protocol.Extensions.GPS51.Metadata;
+using JT808.Protocol.Formatters;
+using JT808.Protocol.Interfaces;
+using JT808.Protocol.MessageBody;
+using JT808.Protocol.MessagePack;
+
+namespace JT808.Protocol.Extensions.GPS51.MessageBody
+{
+ ///
+ /// 多路油耗模拟量
+ ///
+ public class JT808_0x0200_0x2B_Ext : JT808MessagePackFormatter, JT808_0x0200_CustomBodyBase, IJT808Analyze
+ {
+ ///
+ /// 多路油耗模拟量,Id
+ ///
+ public byte AttachInfoId { get; set; } = JT808_GPS51_Constants.JT808_0x0200_0x2B;
+ ///
+ /// 多路油耗模拟量信息附加长度
+ ///
+ public byte AttachInfoLength { get; set; }
+ ///
+ /// 油量数据
+ ///
+ public List Oils { get; set; }
+
+ ///
+ ///
+ ///
+ ///
+ ///
+ ///
+ public void Analyze(ref JT808MessagePackReader reader, Utf8JsonWriter writer, IJT808Config config)
+ {
+ JT808_0x0200_0x2B_Ext value = new JT808_0x0200_0x2B_Ext();
+ value.AttachInfoId = reader.ReadByte();
+ writer.WriteNumber($"[{value.AttachInfoId.ReadNumber()}]附加信息Id", value.AttachInfoId);
+ value.AttachInfoLength = reader.ReadByte();
+ writer.WriteNumber($"[{value.AttachInfoLength.ReadNumber()}]附加信息长度", value.AttachInfoLength);
+ value.Oils = new List();
+ for (ushort i = 0; i < value.AttachInfoLength/2; i++) {
+ value.Oils.Add(reader.ReadUInt16());
+ }
+ writer.WriteString($"[油量值:{string.Join("", value.Oils.Select(m=>m.ReadNumber()))}]",string.Join(",", value.Oils));
+ }
+ ///
+ ///
+ ///
+ ///
+ ///
+ ///
+ public override JT808_0x0200_0x2B_Ext Deserialize(ref JT808MessagePackReader reader, IJT808Config config)
+ {
+ JT808_0x0200_0x2B_Ext value = new JT808_0x0200_0x2B_Ext();
+ value.AttachInfoId = reader.ReadByte();
+ value.AttachInfoLength = reader.ReadByte();
+ value.Oils = new List();
+ for (int i = 0; i < value.AttachInfoLength/2; i++) {
+ value.Oils.Add(reader.ReadUInt16());
+ }
+ return value;
+ }
+ ///
+ ///
+ ///
+ ///
+ ///
+ ///
+ public override void Serialize(ref JT808MessagePackWriter writer, JT808_0x0200_0x2B_Ext value, IJT808Config config)
+ {
+ writer.WriteByte(value.AttachInfoId);
+ writer.WriteByte((byte)(value.Oils.Count*2));
+ foreach (var item in value.Oils)
+ {
+ writer.WriteUInt16(item);
+ }
+ }
+ }
+}
diff --git a/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/MessageBody/JT808_0x0200_0x51.cs b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/MessageBody/JT808_0x0200_0x51.cs
new file mode 100644
index 0000000..fd3ee3e
--- /dev/null
+++ b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/MessageBody/JT808_0x0200_0x51.cs
@@ -0,0 +1,84 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.Json;
+using JT808.Protocol.Extensions.GPS51.Metadata;
+using JT808.Protocol.Formatters;
+using JT808.Protocol.Interfaces;
+using JT808.Protocol.MessageBody;
+using JT808.Protocol.MessagePack;
+
+namespace JT808.Protocol.Extensions.GPS51.MessageBody
+{
+ ///
+ /// 温度
+ ///
+ public class JT808_0x0200_0x51 : JT808MessagePackFormatter, JT808_0x0200_CustomBodyBase, IJT808Analyze
+ {
+ ///
+ /// 温度,Id
+ ///
+ public byte AttachInfoId { get; set; } = JT808_GPS51_Constants.JT808_0x0200_0x51;
+ ///
+ /// 温度信息附加长度
+ ///
+ public byte AttachInfoLength { get; set; }
+ ///
+ /// 温度数据
+ ///
+ public List Temperatures { get; set; }
+
+ ///
+ ///
+ ///
+ ///
+ ///
+ ///
+ public void Analyze(ref JT808MessagePackReader reader, Utf8JsonWriter writer, IJT808Config config)
+ {
+ JT808_0x0200_0x51 value = new JT808_0x0200_0x51();
+ value.AttachInfoId = reader.ReadByte();
+ writer.WriteNumber($"[{value.AttachInfoId.ReadNumber()}]附加信息Id", value.AttachInfoId);
+ value.AttachInfoLength = reader.ReadByte();
+ writer.WriteNumber($"[{value.AttachInfoLength.ReadNumber()}]附加信息长度", value.AttachInfoLength);
+ value.Temperatures = new List();
+ for (ushort i = 0; i < value.AttachInfoLength/2; i++) {
+ value.Temperatures.Add(reader.ReadInt16());
+ }
+ writer.WriteString($"[温度值:{string.Join("", value.Temperatures.Select(m=>m.ReadNumber()))}]",string.Join(",", value.Temperatures));
+ }
+ ///
+ ///
+ ///
+ ///
+ ///
+ ///
+ public override JT808_0x0200_0x51 Deserialize(ref JT808MessagePackReader reader, IJT808Config config)
+ {
+ JT808_0x0200_0x51 value = new JT808_0x0200_0x51();
+ value.AttachInfoId = reader.ReadByte();
+ value.AttachInfoLength = reader.ReadByte();
+ value.Temperatures = new List();
+ for (int i = 0; i < value.AttachInfoLength / 2; i++) {
+ value.Temperatures.Add(reader.ReadInt16());
+ }
+ return value;
+ }
+ ///
+ ///
+ ///
+ ///
+ ///
+ ///
+ public override void Serialize(ref JT808MessagePackWriter writer, JT808_0x0200_0x51 value, IJT808Config config)
+ {
+ writer.WriteByte(value.AttachInfoId);
+ writer.WriteByte((byte)(value.Temperatures.Count*2));
+ foreach (var item in value.Temperatures)
+ {
+ writer.WriteInt16(item);
+ }
+ }
+ }
+}
diff --git a/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/Metadata/AlarmIdentificationProperty.cs b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/Metadata/AlarmIdentificationProperty.cs
new file mode 100644
index 0000000..4ce5109
--- /dev/null
+++ b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.GPS51/Metadata/AlarmIdentificationProperty.cs
@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace JT808.Protocol.Extensions.GPS51.Metadata
+{
+ ///
+ /// 报警标识号
+ ///
+ public class AlarmIdentificationProperty
+ {
+ ///
+ /// 终端ID
+ ///
+ public string TerminalID { get; set; }
+ ///
+ /// YY-MM-DD-hh-mm-ss
+ /// BCD[6]
+ ///
+ public DateTime Time { get; set; }
+ ///
+ /// 序号
+ ///
+ public byte SN { get; set; }
+ ///
+ /// 附件数量
+ ///
+ public byte AttachCount { get; set; }
+ ///
+ /// 预留
+ ///
+ public byte Retain { get; set; }
+ }
+}
diff --git a/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.JT1078/MessageBody/JT808_0x9201.cs b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.JT1078/MessageBody/JT808_0x9201.cs
index 399bae0..16cd356 100644
--- a/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.JT1078/MessageBody/JT808_0x9201.cs
+++ b/src/JT808.Protocol.Extensions/JT808.Protocol.Extensions.JT1078/MessageBody/JT808_0x9201.cs
@@ -123,7 +123,7 @@ namespace JT808.Protocol.Extensions.JT1078.MessageBody
value.MemoryType = reader.ReadByte();
writer.WriteString($"[{value.MemoryType.ReadNumber()}]存储器类型", MemTypeDisplay(value.MemoryType));
value.PlaybackWay = reader.ReadByte();
- writer.WriteString($"[{value.PlaybackWay.ReadNumber()}]回访方式", PlayBackWayDisplay(value.PlaybackWay));
+ writer.WriteString($"[{value.PlaybackWay.ReadNumber()}]回放方式", PlayBackWayDisplay(value.PlaybackWay));
value.PlaySpeed = reader.ReadByte();
writer.WriteString($"[{value.PlaySpeed.ReadNumber()}]快进或快退倍数", FastForwardOrFastRewindMultiplesDisplay(value.PlaySpeed));
value.BeginTime = reader.ReadDateTime_yyMMddHHmmss();
diff --git a/src/JT808.Protocol.sln b/src/JT808.Protocol.sln
index acd871a..3250e2e 100644
--- a/src/JT808.Protocol.sln
+++ b/src/JT808.Protocol.sln
@@ -33,6 +33,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JT808.Protocol.Extensions.S
EndProject
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JT808.Protocol.Extensions.SuBiao.Test", "JT808.Protocol.Extensions\JT808.Protocol.Extensions.SuBiao.Test\JT808.Protocol.Extensions.SuBiao.Test.csproj", "{BEE2E12D-C123-4682-AB7E-210C2BF564B3}"
EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JT808.Protocol.Extensions.GPS51", "JT808.Protocol.Extensions\JT808.Protocol.Extensions.GPS51\JT808.Protocol.Extensions.GPS51.csproj", "{913959F7-95D1-40FD-B67C-E4906531A828}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "JT808.Protocol.Extensions.GPS51.Test", "JT808.Protocol.Extensions\JT808.Protocol.Extensions.GPS51.Test\JT808.Protocol.Extensions.GPS51.Test.csproj", "{AFB9EA79-566C-4861-A08E-AFB46879CFE3}"
+EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
@@ -75,6 +79,14 @@ Global
{BEE2E12D-C123-4682-AB7E-210C2BF564B3}.Debug|Any CPU.Build.0 = Debug|Any CPU
{BEE2E12D-C123-4682-AB7E-210C2BF564B3}.Release|Any CPU.ActiveCfg = Release|Any CPU
{BEE2E12D-C123-4682-AB7E-210C2BF564B3}.Release|Any CPU.Build.0 = Release|Any CPU
+ {913959F7-95D1-40FD-B67C-E4906531A828}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {913959F7-95D1-40FD-B67C-E4906531A828}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {913959F7-95D1-40FD-B67C-E4906531A828}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {913959F7-95D1-40FD-B67C-E4906531A828}.Release|Any CPU.Build.0 = Release|Any CPU
+ {AFB9EA79-566C-4861-A08E-AFB46879CFE3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {AFB9EA79-566C-4861-A08E-AFB46879CFE3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {AFB9EA79-566C-4861-A08E-AFB46879CFE3}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {AFB9EA79-566C-4861-A08E-AFB46879CFE3}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
@@ -86,6 +98,8 @@ Global
{4984E375-4B55-4188-A94E-844B694BBA5C} = {3A0EEA9A-9667-4386-BB46-4A9CB319CE30}
{001ECBA0-CF17-40B0-B983-B7AE824B8050} = {3A0EEA9A-9667-4386-BB46-4A9CB319CE30}
{BEE2E12D-C123-4682-AB7E-210C2BF564B3} = {3A0EEA9A-9667-4386-BB46-4A9CB319CE30}
+ {913959F7-95D1-40FD-B67C-E4906531A828} = {3A0EEA9A-9667-4386-BB46-4A9CB319CE30}
+ {AFB9EA79-566C-4861-A08E-AFB46879CFE3} = {3A0EEA9A-9667-4386-BB46-4A9CB319CE30}
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {D58CCAA8-ED94-4048-A6DE-55A84814DF17}