CN202339618U - Intelligent navigation system for inspection in substation work area - Google Patents

本实用新型涉及安防技术领域，具体涉及一种变电工区巡视智能导航系统。该系统包括感应终端、与感应终端电连接的通信节点和用于收、发信息的控制台。本实用新型的变电工区巡视智能导航系统能有效的对变电站内巡视、作业、检修的工作人员及来访参观人员位置精准定位，主动感知、展现感应终端当前实时状态信息，主动对来访人员靠近危险作业区域、误入非作业区域进行主动警告提示，能够有效管理监督变电站各类作业安全，避免了作业过程中的误操作和违规操作，提高了变电站作业的安全管理水平，为电网安全生产提供了保障。

The utility model relates to the field of security technology, in particular to an intelligent navigation system for patrolling in substation areas. The system includes an induction terminal, a communication node electrically connected with the induction terminal and a console for receiving and sending information. The intelligent navigation system for substation inspection of the utility model can effectively accurately locate the positions of the personnel who are patrolling, operating, and overhauling the substation and the visiting visitors, actively perceive and display the current real-time status information of the sensing terminal, and actively detect the danger of the visitors Active warning prompts for operating areas and non-operating areas can effectively manage and supervise the safety of various substation operations, avoid misoperations and illegal operations during the operation process, improve the safety management level of substation operations, and provide a guarantee for safe production of power grids. Assure.

变电工区巡视智能导航系统Substation area inspection intelligent navigation system

技术领域 technical field

本实用新型涉及智能安防技术领域，特别是一种变电工区巡视智能导航系统。  The utility model relates to the technical field of intelligent security, in particular to an intelligent navigation system for inspection in substation areas. the

背景技术 Background technique

变电站是电力系统关键环节之一，是电力系统中变换电压、接受和分配电能、控制电力流向和调整电压的枢纽。变电站涉及的设备众多，业务复杂，同时，变电站是典型的高危工作区域，如果管理不到位，很可能导致严重的安全事故发生。所以变电站内的作业人员，需要严格按照操作规程、安全条约等限制条件约束自己，保证自身和变电站内设施安全。同时变电站还需要一套可行的监控系统来进行管理。  The substation is one of the key links in the power system, and it is the hub of the power system to transform voltage, receive and distribute power, control power flow and adjust voltage. Substations involve a lot of equipment and complex business. At the same time, substations are typical high-risk work areas. If the management is not in place, it is likely to lead to serious safety accidents. Therefore, the operators in the substation need to restrain themselves strictly in accordance with the operating procedures, safety treaties and other restrictions to ensure the safety of themselves and the facilities in the substation. At the same time, the substation also needs a feasible monitoring system for management. the

现有的变电站监控系统包括摄像头和控制台，摄像头能够对变电站内的环境和来访人员起到一定的监视作用。但是，摄像头易出现监控盲区，达不到对所有区域进行监控的目的，而且，当来访人员进入变电站危险区域时，现有的监控系统不能实现及时报警功能，监控室的工作人员只能通过控制台的显示画面知道变电站区域内有来访人员进入以及来访人员的所在区域，而不能很准确的判断来访人员所在区域是否为危险区域，如果监控室的工作人员短暂离开或困乏睡着，甚至不能及时发现已有来访人员进入危险区域；另一方面，安装摄像头的布线线路和安装工序都非常复杂，而且成本较高。  The existing substation monitoring system includes a camera and a console, and the camera can monitor the environment and visitors in the substation to a certain extent. However, the camera is prone to monitoring blind spots, which cannot achieve the purpose of monitoring all areas. Moreover, when visitors enter the dangerous area of the substation, the existing monitoring system cannot realize the timely alarm function, and the staff in the monitoring room can only pass through the control The display screen of the station knows that there are visitors entering the substation area and the area where the visitors are located, but it cannot accurately judge whether the area where the visitor is located is a dangerous area. It is found that visitors have entered the dangerous area; on the other hand, the wiring lines and installation procedures for installing the camera are very complicated and costly. the

实用新型内容 Utility model content

本实用新型的目的在于：针对现有技术存在的上述问题，提供一种变电工 区巡视智能导航系统。该智能导航系统能够对变电站内的来访人员的行进路线进行有效监控，当来访人员进入危险区域时，该智能导航系统能够及时发出报警信息，避免危险发生。  The purpose of the utility model is to provide an intelligent navigation system for substation inspection in view of the above-mentioned problems in the prior art. The intelligent navigation system can effectively monitor the travel route of the visitors in the substation, and when the visitors enter the dangerous area, the intelligent navigation system can send an alarm message in time to avoid danger. the

为了实现上述目的，本实用新型采用的技术方案为：  In order to achieve the above object, the technical solution adopted by the utility model is:

一种变电工区巡视智能导航系统，包括控制台，该系统还包括感应终端以及与感应终端连接的通信节点。该智能导航系统设置于变电工区的危险区域，当来访人员进入危险区时，该智能导航系统能够及时感应并发出报警信息，避免危险发生。  An intelligent navigation system for substation inspection includes a console, and the system also includes a sensing terminal and a communication node connected with the sensing terminal. The intelligent navigation system is installed in the dangerous area of the substation area. When visitors enter the dangerous area, the intelligent navigation system can sense and send an alarm message in time to avoid danger. the

作为本实用新型的优选方案，所述感应终端包括感应模块、用于发出警报提示的报警模块和第一微处理器，所述感应模块和报警模块分别与第一微处理器连接，所述第一微处理器包括第一报警处理模块和感应处理模块，所述报警模块优选为以声音和光亮形式发出警报提示的声光报警模块；所述控制台包括第二微处理器和与第二微处理器连接的显示器，所述第二微处理器包括第二报警处理模块。  As a preferred solution of the present utility model, the sensing terminal includes a sensing module, an alarm module for issuing an alarm prompt, and a first microprocessor, the sensing module and the alarm module are respectively connected to the first microprocessor, and the second A microprocessor includes a first alarm processing module and a sensing processing module, the alarm module is preferably an acousto-optic alarm module that sends an alarm prompt in the form of sound and light; the console includes a second microprocessor and a second microprocessor The processor is connected to a display, and the second microprocessor includes a second alarm processing module. the

当感应模块感应到有人员进入其感应区域时，感应模块将该报警信息传输给感应终端的第一微处理器，第一微处理器的第一报警处理模块发出指令控制感应终端的报警模块发出报警提示，同时感应终端的第一微处理器将报警信息通过通信节点发送至控制台的第二微处理器，在控制台显示器屏幕上显著提示该感应终端情况。控制感应终端的报警模块也可以由控制台控制，控制台接收到报警信息后，控制台设置的第二报警处理模块发出指令，该指令经通信节点传输至感应终端的第一微处理器，感应终端的第一微处理器根据控制台的指令控制感应终端的报警模块发出报警提示。  When the sensing module senses that someone enters its sensing area, the sensing module transmits the alarm information to the first microprocessor of the sensing terminal, and the first alarm processing module of the first microprocessor issues an instruction to control the alarm module of the sensing terminal to issue Alarm prompting, at the same time, the first microprocessor of the sensing terminal sends the alarm information to the second microprocessor of the console through the communication node, and the condition of the sensing terminal is prominently prompted on the display screen of the console. The alarm module controlling the sensing terminal can also be controlled by the console. After the console receives the alarm information, the second alarm processing module set on the console sends an instruction, and the instruction is transmitted to the first microprocessor of the sensing terminal through the communication node, and the sensing The first microprocessor of the terminal controls the alarm module of the sensing terminal to issue an alarm prompt according to the instructions of the console. the

作为本实用新型的优选方案，所述感应终端还包括遥控模块，所述遥控模块与第一微处理器连接，变电工区巡视智能导航系统还包括用于控制感应终端处于设防或撤防模式的遥控器，感应终端的遥控模块与遥控器信号连接。由于遥控模块和遥控器的设置，该变电工区巡视智能导航系统可以进行布防设置，即对感应模块是否工作进行控制。具体的，工作人员可以通过遥控器，在变电工区现场对感应终端进行控制。设防模式即感应模块处于工作状态，能够感应到是否有来访人员进入其感应区域，撤防模式即感应模块处于不工作状态，不能感应到是否有来访人员进入其感应区域。  As a preferred solution of the present utility model, the sensing terminal also includes a remote control module, which is connected to the first microprocessor, and the substation area inspection intelligent navigation system also includes a remote control for controlling the sensing terminal to be in the fortification or disarming mode The remote control module of the sensing terminal is connected with the remote control signal. Due to the setting of the remote control module and the remote control, the intelligent navigation system for inspection in the substation area can be set for arming, that is, to control whether the sensing module is working. Specifically, the staff can control the induction terminal in the substation area through the remote control. Fortification mode means that the sensing module is in working state, and can sense whether visitors enter its sensing area; disarm mode means that the sensing module is in a non-working state, and cannot sense whether visitors enter its sensing area. the

作为本实用新型的优选方案，所述控制台还包括第二声光报警模块，所述第二声光报警模块与第二微处理器连接。当控制台接收到报警信息后，在控制台显示器屏幕上显著提示该感应终端情况的同时，第二微处理器的第二报警处理模块发出指令控制第二声光报警模块发出报警提示。  As a preferred solution of the present utility model, the console further includes a second sound and light alarm module, and the second sound and light alarm module is connected with the second microprocessor. When the console receives the alarm information, the console display screen notably prompts the situation of the sensing terminal, and at the same time, the second alarm processing module of the second microprocessor issues an instruction to control the second sound and light alarm module to issue an alarm prompt. the

作为本实用新型的优选方案，所述第二微处理器为ARM微处理器。  As a preferred solution of the present invention, the second microprocessor is an ARM microprocessor. the

作为本实用新型的优选方案，所述控制台的第二微处理器还设置有布防模块。所述布防模块用于控制感应终端处于设防或撤防工作模式，当控制台发出设防或撤防指令，该指令信号通过通信节点传输到感应终端的第一微处理器，第一微处理器的感应处理模块控制感应模块进入设防/撤防模式。  As a preferred solution of the present utility model, the second microprocessor of the console is also provided with an arming module. The arming module is used to control the sensing terminal to be in the arming or disarming mode. When the console sends an arming or disarming command, the command signal is transmitted to the first microprocessor of the sensing terminal through the communication node, and the sensing process of the first microprocessor The module controls the sensing module to enter the arming/disarming mode. the

作为本实用新型的优选方案，所述感应终端和通信节点均为N个，N为自然数，所述通信节点优选为Zigbee(基于IEEE802.15.4标准的低功耗个域网协议，一种低价格、低功耗的近距离无线组网通讯技术)无线自组织网络节点。所述通信节点接收到与其连接的感应终端发出的报警信息后，自动寻找其他通信节点并组织成网络，将报警信息传送至控制台。  As a preferred solution of the present utility model, the sensing terminals and communication nodes are N, and N is a natural number, and the communication nodes are preferably Zigbee (a low-power personal area network protocol based on the IEEE802.15.4 standard, a low-cost , low-power short-range wireless networking communication technology) wireless self-organizing network nodes. After the communication node receives the alarm information sent by the sensing terminal connected to it, it automatically finds other communication nodes and organizes them into a network, and transmits the alarm information to the console. the

综上所述，由于采用了上述技术方案，本实用新型的有益效果是：本实用新型的变电工区巡视智能导航系统能有效的对变电站内巡视、作业、检修的工作人员及来访参观人员位置精准定位，主动感知、展现感应终端当前实时状态信息，主动对来访人员靠近危险作业区域、误入非作业区域进行主动警告提示，并能展现来访人员在变电站内的移动轨迹，能够有效管理监督变电站各类作业安全，避免了作业过程中的误操作和违规操作，提高了变电站作业的安全管理水平，为电网安全生产提供保障。  In summary, due to the adoption of the above technical scheme, the beneficial effects of the utility model are: the substation inspection intelligent navigation system of the utility model can effectively monitor the positions of the personnel who patrol, operate, and overhaul the substation and the visiting personnel. Accurate positioning, active perception and display of the current real-time status information of the sensing terminal, active warning prompts for visitors approaching dangerous operating areas and straying into non-operating areas, and showing the moving track of visitors in the substation, which can effectively manage and supervise the substation All kinds of operations are safe, avoiding misoperations and illegal operations during the operation process, improving the safety management level of substation operations, and providing guarantee for safe production of power grids. the

附图说明 Description of drawings

图1是本实用新型感应终端的结构框图。  Fig. 1 is a structural block diagram of the sensing terminal of the present invention. the

图2为本实用新型通信节点构成的网络框图。  Fig. 2 is the network block diagram that the utility model communication node constitutes. the

图3为实施例2中控制台的结构框图。  Fig. 3 is a structural block diagram of the console in Embodiment 2. the

图4是本实用新型变电工区巡视智能导航系统示意图。  Fig. 4 is a schematic diagram of the intelligent navigation system for patrolling substation area of the utility model. the

图中标记：1-感应终端，2-误入人员，3-通信节点，4-控制台，5-遥控器。  Marks in the figure: 1-sensing terminal, 2-personnel entering by mistake, 3-communication node, 4-console, 5-remote controller. the

具体实施方式 Detailed ways

下面结合附图，对本实用新型作详细的说明。  Below in conjunction with accompanying drawing, the utility model is described in detail. the

为了使本实用新型的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本实用新型进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本实用新型，并不用于限定本实用新型。  In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model. the

实施例1  Example 1

如图1、图2所示，本实施例列举的变电工区巡视智能导航系统，包括感应终端、与感应终端连接的通信节点和控制台。所述感应终端包括感应模块、遥控模块、用于发出警报提示的报警模块和第一微处理器，所述感应模块、遥 控模块和报警模块分别与第一微处理器连接，所述第一微处理器包括第一报警处理模块和感应处理模块，所述报警模块为声光报警模块；所述控制台包括第二微处理器和与第二微处理器连接的显示器，所述第二微处理器包括第二报警处理模块；本智能导航系统还包括控制感应终端的遥控器，工作人员可通过遥控器在现场对感应终端进行设防、撤防控制，设防即控制感应模块处于工作状态，能够感应到是否有来访人员进入其感应区域，撤防即控制感应模块处于不工作状态，不能感应到是否有来访人员进入其感应区域；所述通信节点为Zigbee无线自组织网络节点，感应终端和通信节点均为N个，N为自然数，感应终端和通信节点在图2中没有完全展示。  As shown in Fig. 1 and Fig. 2, the intelligent navigation system for substation inspection in this embodiment includes a sensing terminal, a communication node connected to the sensing terminal, and a console. The sensing terminal includes a sensing module, a remote control module, an alarm module for issuing an alarm prompt, and a first microprocessor, and the sensing module, the remote control module and the alarm module are respectively connected to the first microprocessor, and the first The microprocessor includes a first alarm processing module and a sensing processing module, and the alarm module is an acousto-optic alarm module; the console includes a second microprocessor and a display connected to the second microprocessor, and the second microprocessor The processor includes a second alarm processing module; the intelligent navigation system also includes a remote control for controlling the sensing terminal, through which the staff can arm and disarm the sensing terminal at the scene, fortification means that the sensing module is in working condition and can sense Whether a visitor enters its sensing area, disarming means that the control sensing module is in a non-working state, and cannot sense whether a visitor enters its sensing area; the communication node is a Zigbee wireless self-organizing network node, and both the sensing terminal and the communication node are is N, and N is a natural number, and the sensing terminals and communication nodes are not fully shown in FIG. 2 . the

如图4所示，当某一感应模块感应到有误入人员2进入其感应区域时，该感应模块将报警信息传输给该感应终端1的第一微处理器，第一微处理器的第一报警处理模块发出指令控制该感应终端1的报警模块发出报警提示，同时该感应终端1的第一微处理器将报警信息发送到与该感应终端1连接的通信节点3，该通信节点3接收到报警信息后自动寻找其他通信节点3并组织成网络，将报警信息传送至的第二微处理器，在控制台4显示器屏幕上显著提示该感应终端1情况。控制感应终端1的报警模块发出报警提示也可以通过控制台4完成，控制台4接收到报警信息后，控制台4第二报警处理模块发出指令，该指令经通信节点3传输至感应终端1的第一微处理器，感应终端1的第一微处理器根据控制台4的指令控制感应终端1的报警模块发出报警提示。控制台4具备同时接收多个感应终端1发送报警信息的能力。当需要对变电工区内的设施进行检修时，工作人员通过遥控器5现场对感应终端1进行撤防控制，检修完成后工作人员又通过遥控器5对感应终端1进行设防控制。  As shown in Figure 4, when a certain sensing module senses that a person 2 enters its sensing area by mistake, the sensing module transmits the alarm information to the first microprocessor of the sensing terminal 1, and the first microprocessor of the first microprocessor An alarm processing module sends an instruction to control the alarm module of the sensing terminal 1 to issue an alarm prompt, and at the same time, the first microprocessor of the sensing terminal 1 sends the alarm information to the communication node 3 connected to the sensing terminal 1, and the communication node 3 receives After receiving the alarm information, other communication nodes 3 are automatically searched for and organized into a network, and the alarm information is sent to the second microprocessor, which notably prompts the sensing terminal 1 situation on the console 4 display screen. The alarm module that controls the sensing terminal 1 to issue an alarm prompt can also be completed through the console 4. After the console 4 receives the alarm information, the second alarm processing module of the console 4 sends an instruction, which is transmitted to the sensor terminal 1 through the communication node 3. The first microprocessor, the first microprocessor of the sensing terminal 1 controls the alarm module of the sensing terminal 1 to issue an alarm prompt according to the instructions of the console 4 . The console 4 has the ability to receive alarm information sent by multiple sensing terminals 1 at the same time. When it is necessary to overhaul the facilities in the substation area, the staff will disarm and control the induction terminal 1 through the remote control 5 on site, and after the maintenance is completed, the staff will use the remote control 5 to fortify and control the induction terminal 1. the

控制台跟踪发出报警信息的感应终端的位置，或通过一定的定位算法可跟踪入侵人员的位置，并能展现入侵人员在变电站内的运动轨迹，主动对来访人员靠近危险作业区域、误入非作业区域进行主动警告提示，能够有效管理监督变电站各类作业安全，避免了作业过程中的误操作和违规操作，提高了变电站作业的安全管理水平，为电网安全生产提供了保障。  The console tracks the position of the sensing terminal that sends out the alarm information, or can track the position of the intruder through a certain positioning algorithm, and can display the movement track of the intruder in the substation, and actively warn the visitor that he is close to the dangerous operation area and strays into the non-operation area. Active warning prompts in the area can effectively manage and supervise the safety of various substation operations, avoid misoperations and illegal operations during the operation process, improve the safety management level of substation operations, and provide a guarantee for safe production of the power grid. the

实施例2  Example 2

如图1、图2、图3所示，本实施例列举的变电工区巡视智能导航系统，包括感应终端、与感应终端连接的通信节点、控制感应终端的遥控器、控制台，所述感应终端包括感应模块、第一声光报警模块、遥控模块和第一微处理器，所述感应模块、第一声光报警模块、遥控模块分别与第一微处理器连接；所述第一微处理器包括第一报警处理模块和感应处理模块，所述报警模块为声光报警模块；所述通信节点为Zigbee无线自组织网络节点，感应终端和通信节点均为N个，N为自然数；所述控制台包括第二声光报警模块、第二微处理器和显示器，所述第二声光报警模块和显示器分别与第二微处理器连接；所述第二微处理器包括第二报警处理模块和布防模块，所述布防模块用于控制感应终端处于设防或撤防工作模式。  As shown in Fig. 1, Fig. 2 and Fig. 3, the smart navigation system for patrolling substation area listed in this embodiment includes a sensing terminal, a communication node connected to the sensing terminal, a remote controller for controlling the sensing terminal, and a console. The terminal includes a sensing module, a first sound and light alarm module, a remote control module and a first microprocessor, and the sensing module, the first sound and light alarm module, and the remote control module are respectively connected to the first microprocessor; the first microprocessor The device includes a first alarm processing module and a sensing processing module, the warning module is an acousto-optic alarm module; the communication node is a Zigbee wireless self-organizing network node, and there are N sensing terminals and communication nodes, and N is a natural number; The console includes a second sound and light alarm module, a second microprocessor and a display, and the second sound and light alarm module and the display are respectively connected with the second microprocessor; the second microprocessor includes a second alarm processing module and an arming module, the arming module is used to control the sensing terminal to be in an arming or disarming working mode. the

如图4所示，当某一感应模块感应到有误入人员2进入其感应区域时，该感应模块将报警信息传输给该感应终端1的第一微处理器，第一微处理器的第一报警处理模块发出指令控制该感应终端1的报警模块发出报警提示，同时该感应终端1的第一微处理器将报警信息发送到与该感应终端1连接的通信节3点，该通信节点3接收到报警信息后自动寻找其他通信节点3并组织成网络，将报警信息传送至的第二微处理器，在控制台4显示器屏幕上显著提示该感应终端1情况的同时，第二微处理器的第二报警处理模块发出指令控制第二声光 报警模块发出报警提示；控制感应终端1的报警模块发出报警提示也可以通过控制台4完成，控制台4接收到报警信息后，控制台4第二报警处理模块发出指令，该指令经通信节点3传输至感应终端1的第一微处理器，感应终端1的第一微处理器根据控制台4的指令控制感应终端1的报警模块发出报警提示。控制台4具备同时接收多个感应终端1发送报警信息的能力。当需要对变电工区内的设施进行检修时，工作人员可通过遥控器5现场对感应终端1进行撤防控制，检修完成后工作人员又通过遥控器5对感应终端1进行设防控制；对感应终端1的设防/撤防控制也可以通过控制台4实现。控制台4对感应终端1进行设防和撤防控制通过按钮完成，按下按钮后第二微处理器的布防模块下达设防/撤防命令，该命令信号通过通信节点3传输到感应终端1的第一微处理器，第一微处理器的感应处理模块控制感应模块进入设防/撤防模式。  As shown in Figure 4, when a certain sensing module senses that a person 2 enters its sensing area by mistake, the sensing module transmits the alarm information to the first microprocessor of the sensing terminal 1, and the first microprocessor of the first microprocessor An alarm processing module sends an instruction to control the alarm module of the sensing terminal 1 to issue an alarm prompt, and at the same time, the first microprocessor of the sensing terminal 1 sends the alarm information to the communication node 3 connected to the sensing terminal 1, and the communication node 3 After receiving the alarm information, other communication nodes 3 are automatically searched and organized into a network, and the alarm information is sent to the second microprocessor, and when the situation of the sensing terminal 1 is significantly prompted on the console 4 display screen, the second microprocessor The second alarm processing module sends an instruction to control the second sound and light alarm module to send an alarm prompt; the alarm module of the control sensing terminal 1 sends an alarm prompt and can also be completed through the console 4. After the console 4 receives the alarm information, the console 4 first The second alarm processing module sends an instruction, which is transmitted to the first microprocessor of the sensing terminal 1 through the communication node 3, and the first microprocessor of the sensing terminal 1 controls the alarm module of the sensing terminal 1 to issue an alarm prompt according to the instruction of the console 4 . The console 4 has the ability to receive alarm information sent by multiple sensing terminals 1 at the same time. When it is necessary to overhaul the facilities in the substation area, the staff can disarm and control the induction terminal 1 through the remote control 5 on site. The arming/disarming control of 1 can also be realized through console 4. The control of arming and disarming of the sensing terminal 1 by the console 4 is completed through buttons. After pressing the button, the arming module of the second microprocessor issues an arming/disarming command, and the command signal is transmitted to the first microprocessor of the sensing terminal 1 through the communication node 3. The processor, the sensing processing module of the first microprocessor controls the sensing module to enter the arming/disarming mode. the

本实用新型的变电工区巡视智能导航系统能够监控入侵人员的位置，并能展现入侵人员在变电站内的运动轨迹，主动对入侵人员靠近危险作业区域、误入非作业区域进行主动警告提示，能够有效管理监督变电站各类作业安全，避免了作业过程中的误操作和违规操作，提高了变电站作业的安全管理水平，为电网安全生产提供了保障。  The intelligent navigation system for substation inspection of the utility model can monitor the position of intruders, and can display the movement track of intruders in the substation, and actively warn and prompt the intruders approaching the dangerous operation area or entering the non-operation area by mistake, and can Effectively manage and supervise the safety of various operations in substations, avoid misoperations and illegal operations in the operation process, improve the safety management level of substation operations, and provide a guarantee for safe production of power grids. the

以上所述仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本实用新型的保护范围之内。  The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models. the