技术领域technical field
本发明涉及一种有害气体监控报警系统。The invention relates to a harmful gas monitoring and alarm system.
背景技术Background technique
在工业生产以及实验室的特殊实验中常常会使用有害气体，这些气体是生产或实验所必须的，但由于有毒或易燃易爆，使用过程中必须对气体泄漏情况进行监控，以期在发生泄漏初期尚未造成危害时即被发现并处置。Hazardous gases are often used in industrial production and special experiments in laboratories. These gases are necessary for production or experiments. However, due to their toxicity, flammability and explosion, gas leakage must be monitored during use, in order to avoid leakage in case of leakage. It is discovered and disposed of when it has not caused any harm in the early stage.
对于不同的生产环境以及实验环境，所要部署的监控网络规模可能存在很大差异，并且不同的应用环境可能存在不同的网络部署限制，另外对于不同的应用场景也往往会存在不同的应急处置设备以及应急处置方案。为每种应用场景针对性的开发一套监控报警方案固然可行，但一套灵活易扩展的、可以适应多种应用场景的泄漏监控报警方案显得更为经济。For different production environments and experimental environments, the scale of the monitoring network to be deployed may vary greatly, and different application environments may have different network deployment restrictions. In addition, there are often different emergency response equipment and Emergency response plan. It is feasible to develop a set of monitoring and alarm solutions for each application scenario, but a leak monitoring and alarm solution that is flexible and easy to expand and can adapt to various application scenarios is more economical.
专利CN202421166 U公开了一种应用于电缆隧道的有害气体监测系统，专利CN201417277 Y公开了一种石油化工气体安全检测监控系统，这些现有的有害气体监控系统针对于特定领域，通用性差。现有的有害气体监控系统方案仅仅对大空间中的有害气体浓度进行检测，对于有些应用场景——如对管道运输的有害气体的泄漏检测时，现有的监控方案监控效果很差。另外现有的监控系统的监控范围具有较大的局限性，无法适用于广域的大规模监控网络。Patent CN202421166 U discloses a harmful gas monitoring system applied to cable tunnels, and patent CN201417277 Y discloses a petrochemical gas safety detection and monitoring system. These existing harmful gas monitoring systems are aimed at specific fields and have poor versatility. Existing harmful gas monitoring system solutions only detect the concentration of harmful gases in a large space. For some application scenarios, such as the leakage detection of harmful gases transported by pipelines, the existing monitoring solutions have poor monitoring effects. In addition, the monitoring range of the existing monitoring system has relatively large limitations, and cannot be applied to a wide-area large-scale monitoring network.
发明内容Contents of the invention
本发明的目的是克服现有技术的通用性差、难以针对泄漏进行监控以及难以构建广域的大规模监控网络的缺点，提出一种有害气体泄漏监控报警系统。The purpose of the present invention is to overcome the disadvantages of poor versatility, difficulty in monitoring leakage and difficulty in building a large-scale wide-area monitoring network in the prior art, and propose a harmful gas leakage monitoring and alarm system.
本发明有害气体泄漏监控报警系统包括现场主控制器、监测报警单元、监控主机及应急联动装置。监控主机和应急联动装置是可选部件，可根据实际使用需求决定是否采用。现场主控制器分别与监测报警单元、监控主机及应急联动装置相连接。监测报警单元将检测信息及自身运行状态信息传输给现场主控制器，现场主控制器将控制信息和配置信息传输给监测报警单元，现场主控制器将其所管理的监控网络的检测信息及网络运行状态信息传输给监控主机，监控主机将控制信息及用户设定数据传输给现场主控制器，现场主控制器将联动信息传输给应急联动装置。The harmful gas leakage monitoring and alarming system of the present invention includes a main controller on site, a monitoring and alarming unit, a monitoring host and an emergency linkage device. The monitoring host and emergency linkage device are optional components, which can be decided according to actual use requirements. The on-site main controller is respectively connected with the monitoring and alarm unit, the monitoring host and the emergency linkage device. The monitoring and alarm unit transmits the detection information and its own operating status information to the on-site main controller, and the on-site main controller transmits the control information and configuration information to the monitoring and alarm unit, and the on-site main controller transmits the detection information of the monitoring network it manages and the network The running status information is transmitted to the monitoring host, and the monitoring host transmits the control information and user setting data to the on-site main controller, and the on-site main controller transmits the linkage information to the emergency linkage device.
所述的现场主控制器包括处理器模块、存储器模块、网络通信模块、子网络通信模块、应急联动接口模块和电源模块。处理器模块分别与存储器模块、网络通信模块、子网络通信模块以及应急联动接口模块相连，电源模块分别与现场主控制器中的其他模块相连并为他们供电。处理器模块能够处理数据，并能够与其他模块进行通信；存储模块可用于存储监控数据、配置数据；网络通信模块可采用有线或无线形式，通过网络通信模块所述现场主控制器可以接入本地局域网或广域互联网，进而实现与控制主机通信；子网络通信模块可采用有线或无线形式，通过子网络通信模块所述现场主控制器可以与监测报警单元进行通信；应急联动接口模块与应急联动装置相连，通过应急联动接口模块所述现场主控制器可以控制应急联动装置处理紧急事件。现场主控制器中可以设定应急联动规则，当条件满足设定规则时现场主控制器会自动按照规则控制应急联动装置工作。The on-site main controller includes a processor module, a memory module, a network communication module, a sub-network communication module, an emergency linkage interface module and a power supply module. The processor module is respectively connected with the memory module, the network communication module, the sub-network communication module and the emergency linkage interface module, and the power module is respectively connected with other modules in the on-site main controller and provides power for them. The processor module can process data and communicate with other modules; the storage module can be used to store monitoring data and configuration data; the network communication module can be wired or wireless, and the on-site main controller can be connected to the local Local area network or wide area Internet, and then realize the communication with the control host; the sub-network communication module can adopt wired or wireless form, and the on-site main controller can communicate with the monitoring and alarm unit through the sub-network communication module; the emergency linkage interface module and the emergency linkage The devices are connected, and the on-site main controller can control the emergency linkage device to handle emergency events through the emergency linkage interface module. Emergency linkage rules can be set in the on-site main controller. When the conditions meet the set rules, the on-site main controller will automatically control the emergency linkage device to work according to the rules.
所述的监测报警单元包括微控制器、通信模块、声光报警模块、信号处理接口、两个传感器、辅助控制模块和电源模块。微控制器分别与通信模块、声光报警模块、信号处理接口和辅助控制模块相连，传感器与信号处理接口相连，电源模块分别与监测报警单元中的其它部分相连并为它们供电。微控制器作为所述监测报警单元的核心，能够处理数据并做出判断；通过通信模块，所述监测报警单元能够与现场主控制器进行通信，发送监测数据、报警信息、运行状态信息并接收现场主控制器的控制；当监测数据满足设定条件时，所述监测报警单元通过声光报警模块发出相应的报警信号；信号处理接口负责将传感器输出的信号转换为微控制器可以接受的形式；传感器负责将待检测气体的浓度转换为可测量电信号，所述监测报警单元可安装两个传感器，两个传感器相互作为备份构成冗余设计，提高监测可靠性；辅助控制模块在采用半封闭安装形式时提供排气控制功能。The monitoring and alarm unit includes a microcontroller, a communication module, an audible and visual alarm module, a signal processing interface, two sensors, an auxiliary control module and a power supply module. The microcontroller is respectively connected with the communication module, the sound and light alarm module, the signal processing interface and the auxiliary control module, the sensor is connected with the signal processing interface, and the power supply module is respectively connected with other parts in the monitoring and alarm unit and supplies them with power. As the core of the monitoring and alarm unit, the microcontroller can process data and make judgments; through the communication module, the monitoring and alarm unit can communicate with the on-site master controller, send monitoring data, alarm information, and operating status information and receive The control of the main controller on site; when the monitoring data meets the set conditions, the monitoring and alarm unit sends a corresponding alarm signal through the sound and light alarm module; the signal processing interface is responsible for converting the signal output by the sensor into a form acceptable to the microcontroller The sensor is responsible for converting the concentration of the gas to be detected into a measurable electrical signal. The monitoring and alarm unit can be equipped with two sensors, and the two sensors are mutually used as backups to form a redundant design to improve monitoring reliability; the auxiliary control module adopts a semi-closed Exhaust control function is provided in the installed form.
所述监测报警单元是一个智能化的可独立运行的单元。智能化体现在所述监测报警单元除能够监测有害气体外还能够监控传感器的使用时间，并对传感器的寿命进行预测，在传感器将要达到寿命期限时，向系统发出警告来提示更换传感器，这大大降低了系统的维护难度，提高了系统的可靠性。可独立运行性体现在当对监测报警单元设定了运行规则后，即使与现场主控制器间的通信发生故障，监测报警单元的声光报警功能仍然可以正常工作。The monitoring and alarm unit is an intelligent unit that can operate independently. Intelligence is embodied in that the monitoring and alarm unit can monitor the service time of the sensor in addition to monitoring harmful gases, and predict the life of the sensor. When the sensor is about to reach the life limit, it will send a warning to the system to prompt the replacement of the sensor, which greatly improves the life of the sensor. The maintenance difficulty of the system is reduced, and the reliability of the system is improved. The independent operability is reflected in that after the operation rules are set for the monitoring and alarm unit, even if the communication with the main controller on site fails, the sound and light alarm function of the monitoring and alarm unit can still work normally.
所述半封闭安装形式是监测报警单元的一种安装形式。这种安装形式非常适用于对易漏部位的监测，如管道的连接法兰。当采用此种安装形式时通过半封闭安装壳将监测报警单元与管道的易漏部位包裹在一起，并在安装壳的靠近传感器部位开通气孔，在传感器对侧安装风扇，风扇与监测报警单元的辅助控制模块相连，监测报警单元可以控制风扇加强安装壳包裹的空间的换气。所述的半封闭安装形式能过针对易漏部位进行泄漏监测，当易漏部位发生轻微泄漏时在安装壳包裹的半封闭空间中有害气体的浓度会迅速上升从而被有效检测到，这种安装方式可以大大提高对易漏部位的泄漏的检测能力。The semi-closed installation form is an installation form of the monitoring and alarm unit. This installation form is very suitable for monitoring leaky parts, such as connecting flanges of pipelines. When this type of installation is adopted, the monitoring and alarm unit and the leak-prone part of the pipeline are wrapped together by a semi-closed installation shell, and an air hole is opened near the sensor in the installation shell, and a fan is installed on the opposite side of the sensor, and the fan is connected to the monitoring and alarm unit. The auxiliary control module is connected, and the monitoring and alarm unit can control the fan to strengthen the ventilation of the space wrapped by the installation shell. The semi-enclosed installation form can monitor the leakage of the leak-prone parts. When a slight leak occurs in the leak-prone parts, the concentration of harmful gases in the semi-closed space wrapped by the installation shell will rise rapidly and be effectively detected. This installation This method can greatly improve the ability to detect leaks in leaky parts.
一个所述的现场主控制器与一个或多个所述的监测报警单元构成一个监控子网络。在所述监控子网络中监测报警单元的数量是可以改变的，在运行过程中即可添加、移除和更换监测报警单元，这使得所述监控子网络具有很高的部署灵活性、可维护性和易扩展性。所述监控子网络中现场主控制器与监测报警单元通过有线或无线方式进行双向通信，监测报警单元实时将监测数据以及报警信息发送给现场主控制器，现场主控制器将来自监测报警单元的数据做进一步处理；在须要时现场主控制器可以向监测报警单元发送配置数据，设定监测报警单元的运行规则。在所述监控子网络中可以根据实际需求接入相应的应急联动装置，应急联动装置通过现场主控制器的应急联动接口模块与现场主控制器相连，现场主控制器能够按照设定规则控制应急联动装置工作。One said on-site master controller and one or more said monitoring and alarm units constitute a monitoring sub-network. The number of monitoring and alarming units in the monitoring sub-network can be changed, and monitoring and alarming units can be added, removed and replaced during operation, which makes the monitoring sub-network highly flexible in deployment and maintainable and scalability. In the monitoring sub-network, the on-site main controller and the monitoring and alarm unit carry out two-way communication through wired or wireless mode, and the monitoring and alarm unit sends the monitoring data and alarm information to the on-site main controller in real time, and the on-site main controller sends the information from the monitoring and alarm unit to the on-site main controller. The data is further processed; when necessary, the on-site main controller can send configuration data to the monitoring and alarm unit, and set the operation rules of the monitoring and alarm unit. In the monitoring sub-network, the corresponding emergency linkage device can be connected according to the actual needs. The emergency linkage device is connected with the on-site main controller through the emergency linkage interface module of the on-site main controller. The on-site main controller can control the emergency response according to the set rules. The linkage works.
所述的监控主机是所述系统的可选组成部分，当需要同时管理多个监控子网络或需要进行远程监控时，需要使用监控主机。利用监控主机和多个监控子网络可以构成大规模监控网络，监控子网络间不存在地域上的限制，仅需要监控子网络能够与监控主机建立网络通信。所述监控主机可以是一台普通PC或运行在互联网上的服务器，监控主机上运行监控程序。当与监控主机建立链接后现场主控制器会将所收集的监控数据上传到监控主机，监控主机将数据存入数据库。另外监控主机提供历史数据查询和数据报表功能。The monitoring host is an optional component of the system. When multiple monitoring sub-networks need to be managed at the same time or remote monitoring is required, the monitoring host needs to be used. A large-scale monitoring network can be formed by using the monitoring host and multiple monitoring sub-networks. There is no geographical restriction between the monitoring sub-networks, and only the monitoring sub-network needs to be able to establish network communication with the monitoring host. The monitoring host can be an ordinary PC or a server running on the Internet, and a monitoring program runs on the monitoring host. After establishing a link with the monitoring host, the on-site main controller will upload the collected monitoring data to the monitoring host, and the monitoring host will store the data in the database. In addition, the monitoring host provides historical data query and data report functions.
本发明是一个灵活可扩展的分布式有害气体监控报警解决方案，可以根据需求灵活布置监控网络。系统的灵活可扩展性体现在可以根据实际需求部署一个或多个监控子网络，每个监控子网络可以独立运行并设定独立的联动规则，每个监控子网络可以处于同一地域或不同地域；每个监控子网络中监测报警单元的数量可以依据需求增加或减少，每个监测报警单元可以设定独立的报警阈值；可以通过改变监测报警单元中传感器类型实现多种有害气体的监测，如有毒气体，可燃气体。本发明针对易漏部位采用半封闭式安装形式，采用此种安装形式可以在发生轻微泄漏时即被检测到，使得泄漏造成危害前即被发现并处置。本发明可以通过监控主机和多个监控子网络构成大规模监控网络，通过大规模监控网络可以极大扩展监控网络可覆盖范围。The invention is a flexible and expandable distributed harmful gas monitoring and alarming solution, and the monitoring network can be flexibly arranged according to requirements. The flexible scalability of the system is reflected in the fact that one or more monitoring sub-networks can be deployed according to actual needs. Each monitoring sub-network can operate independently and set independent linkage rules. Each monitoring sub-network can be located in the same region or in different regions; The number of monitoring and alarm units in each monitoring sub-network can be increased or decreased according to demand, and each monitoring and alarm unit can set an independent alarm threshold; the monitoring of various harmful gases can be realized by changing the sensor type in the monitoring and alarm unit, such as toxic gas, flammable gas. The present invention adopts a semi-closed installation form for leak-prone parts, which can be detected when a slight leak occurs, so that the leak can be discovered and disposed of before it causes harm. The present invention can form a large-scale monitoring network through a monitoring host and a plurality of monitoring sub-networks, and can greatly expand the coverage of the monitoring network through the large-scale monitoring network.
附图说明Description of drawings
图1为本发明现场主控制器的组成结构框图；Fig. 1 is the block diagram of composition structure of the present invention's field master controller;
图2为本发明监测报警单元的组成结构框图；Fig. 2 is a block diagram of the composition of the monitoring and alarm unit of the present invention;
图3为本发明监控子网络的组成结构示意图；Fig. 3 is a schematic diagram of the composition structure of the monitoring sub-network of the present invention;
图4为本发明通过监控主机和多个监控子网络组建大规模监控网络的示意图；Fig. 4 is the schematic diagram that the present invention forms large-scale monitoring network by monitoring host computer and a plurality of monitoring sub-networks;
图5a为本发明半封闭安装形式的易漏接头示意图；Figure 5a is a schematic diagram of a leaky joint in a semi-closed installation form of the present invention;
图5b为本发明半封闭安装形式的半封闭安装壳和监测报警单元组装示意图；Figure 5b is a schematic diagram of the assembly of the semi-closed installation shell and the monitoring and alarm unit in the semi-closed installation form of the present invention;
图5c为本发明半封闭安装形式的总体安装示意图；Fig. 5c is an overall installation schematic diagram of the semi-closed installation form of the present invention;
图5d为本发明半封闭安装形式的风扇安装位置示意图；Figure 5d is a schematic diagram of the installation position of the fan in the semi-closed installation form of the present invention;
图5e为图5d方框部位放大图，表示了传感器以及通气孔的位置；Fig. 5e is an enlarged view of the box part in Fig. 5d, showing the position of the sensor and the air vent;
图6为具体实施例1的组成结构示意图；Fig. 6 is the composition structure schematic diagram of specific embodiment 1;
图7为具体实施例2的组成结构示意图。FIG. 7 is a schematic diagram of the composition and structure of Embodiment 2.
具体实施方式detailed description
以下结合附图和具体实施方式进一步说明本发明。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
本发明有害气体泄漏监控报警系统包括现场主控制器、监测报警单元、监控主机以及应急联动装置。现场主控制器分别与监测报警单元、监控主机以及应急联动装置相连。监测报警单元将检测信息以及自身运行状态信息传输给现场主控制器，现场主控制器将控制信息和配置信息传输给监测报警单元，现场主控制器将其所管理的监控网络的检测信息以及网络运行状态信息传输给监控主机，监控主机将控制信息以及用户设定数据传输给现场主控制器，现场主控制器将联动信息传输给应急联动装置。监控主机和应急联动装置是可选部件，可根据实际使用需求决定是否采用。The harmful gas leakage monitoring and alarming system of the present invention includes a main controller on site, a monitoring and alarming unit, a monitoring host and an emergency linkage device. The on-site main controller is respectively connected with the monitoring and alarm unit, the monitoring host and the emergency linkage device. The monitoring and alarm unit transmits the detection information and its own operating status information to the on-site main controller, the on-site main controller transmits the control information and configuration information to the monitoring and alarm unit, and the on-site main controller transmits the detection information of the monitoring network it manages and the network The running status information is transmitted to the monitoring host, and the monitoring host transmits the control information and user setting data to the on-site main controller, and the on-site main controller transmits the linkage information to the emergency linkage device. The monitoring host and emergency linkage device are optional components, which can be decided according to actual use requirements.
如图1所示，所述的现场主控制器包括处理器模块、存储模块、网络通信模块、子网络通信模块、应急联动接口模块和电源模块。处理器模块分别与存储器模块、网络通信模块、子网络通信模块以及应急联动接口模块相连并进行通信，电源模块分别与现场主控制器中的其他模块相连并为他们供电。As shown in Figure 1, the on-site main controller includes a processor module, a storage module, a network communication module, a sub-network communication module, an emergency linkage interface module and a power supply module. The processor module is respectively connected with the memory module, the network communication module, the sub-network communication module and the emergency linkage interface module and communicates, and the power module is respectively connected with other modules in the field main controller and supplies power to them.
如图2所示，所述的监测报警单元包括微控制器、通信模块、声光报警模块、信号处理接口、两个传感器、辅助控制模块和电源模块。微控制器分别与通信模块、声光报警模块、信号处理接口和辅助控制模块相连并与他们通信；传感器与信号处理接口相连，信号处理接口将传感器输出的电信号进行调理并采样得到数字信号；电源模块分别与监测报警单元中的气体部分相连并为它们供电。As shown in Figure 2, the monitoring and alarm unit includes a microcontroller, a communication module, an audible and visual alarm module, a signal processing interface, two sensors, an auxiliary control module and a power supply module. The microcontroller is respectively connected with the communication module, the sound and light alarm module, the signal processing interface and the auxiliary control module and communicates with them; the sensor is connected with the signal processing interface, and the signal processing interface conditions and samples the electrical signal output by the sensor to obtain a digital signal; The power module is respectively connected with the gas part in the monitoring and alarm unit and supplies power to them.
如图3所示，一个所述的现场主控制器与一个或多个所述的监测报警单元构成一个监控子网络。一个监控子网络中可以根据需要连接应急联动装置。监测报警单元与现场主控制器间通过有线或无线方式进行连接并通信。应急联动装置通过现场主控制器中的应急联动接口模块与之相连，通过修改应急联动接口模块可以在子网络中接入不同类型的应急联动装置。As shown in FIG. 3 , one on-site main controller and one or more monitoring and alarm units constitute a monitoring sub-network. An emergency linkage device can be connected as required in a monitoring sub-network. The monitoring and alarm unit is connected and communicated with the on-site main controller through wired or wireless means. The emergency linkage device is connected to it through the emergency linkage interface module in the main controller on site, and different types of emergency linkage devices can be connected in the sub-network by modifying the emergency linkage interface module.
如图4所示，一个所述的监控主机与多个所述的监控子网络构成大规模监控网络，大规模监控网络中的每一个监控子网络是独立的，他们可以被安置在空间相距非常远的地方。As shown in Figure 4, a described monitoring host computer and a plurality of described monitoring sub-networks form a large-scale monitoring network, and each monitoring sub-network in the large-scale monitoring network is independent, and they can be placed in a space very far apart. far away.
如图5所示，当采用半封闭安装形式对易漏部位的泄漏进行重点监测时，利用半封闭安装壳将监测报警单元与管道的易漏部位包裹在一起，并在安装壳的靠近传感器部位开通气孔，在传感器对侧安装风扇，风扇与监测报警单元的辅助控制模块相连，监测报警单元可以控制风扇加强安装壳包裹的空间的换气。图5a示了一个待重点监测的易漏接头；图5b展示了监测报警单元和半封闭安装壳组装在一起的情形；图5c展示了完整的半封闭安装形式的示意图；图5d展示了半封闭安装形式的风扇安装位置；图5d展示了半封闭安装形式中传感器及通气孔在安装壳上的位置。As shown in Figure 5, when using the semi-closed installation form to monitor the leakage of the leak-prone part, the monitoring and alarm unit and the leak-prone part of the pipeline are wrapped together with a semi-closed installation shell, and the sensor is placed near the sensor in the installation shell Open the air hole, install the fan on the opposite side of the sensor, the fan is connected with the auxiliary control module of the monitoring and alarm unit, and the monitoring and alarm unit can control the fan to strengthen the ventilation of the space wrapped by the installation shell. Figure 5a shows a leaky joint to be monitored; Figure 5b shows the situation where the monitoring alarm unit and the semi-closed installation shell are assembled together; Figure 5c shows a schematic diagram of the complete semi-closed installation form; Figure 5d shows the semi-closed The installation position of the fan in the installation form; Figure 5d shows the position of the sensor and the vent hole on the installation shell in the semi-closed installation form.
具体实施例1。本实施例发生的场景为一个以液化天然气为冷却介质的超导实验室。实验环境中存在液化天然气传输管道，制冷装置以及实验罐等。为了保证实验安全需要实时监控天然气的泄漏。如图6所示，在本实施例中系统使用了现场主控制器、多个监测报警单元以及应急联动装置，没有使用监控主机。监测报警单元采用了常规安装形式和半封闭安装形式。应急联动装置包括排气系统和电话报警模块。排气系统和电话报警模块通过有线通信方式与现场主控制器相连，各个监测报警单元通过无线通信方式与现场主控制器相连。部署监控系统时设定各个监测报警单元的报警阈值以及报警恢复阈值，并对现场主控制器设定两条应急联动规则，第一条为当4号和5号监测报警单元中任何一个检测浓度值超过某一设定值时将启动排气系统进行排气；第二条为在特定的敏感时间段，如果任何一个监测报警单元发生报警将通过电话报警模块呼叫设定号码。Specific embodiment 1. The scene in this embodiment is a superconducting laboratory using liquefied natural gas as a cooling medium. There are liquefied natural gas transmission pipelines, refrigeration devices and experimental tanks in the experimental environment. In order to ensure the safety of the experiment, it is necessary to monitor the leakage of natural gas in real time. As shown in FIG. 6 , in this embodiment, the system uses an on-site main controller, multiple monitoring and alarm units, and emergency linkage devices, and does not use a monitoring host. The monitoring and alarm unit adopts a conventional installation form and a semi-closed installation form. The emergency linkage device includes the exhaust system and the telephone alarm module. The exhaust system and the telephone alarm module are connected with the on-site main controller through wired communication, and each monitoring and alarm unit is connected with the on-site main controller through wireless communication. When deploying the monitoring system, set the alarm threshold and alarm recovery threshold of each monitoring and alarm unit, and set two emergency linkage rules for the on-site master controller. When the value exceeds a certain set value, the exhaust system will be activated for exhaust; the second is that in a specific sensitive time period, if any monitoring alarm unit alarms, it will call the set number through the telephone alarm module.
在使用中，假设3号监测报警单元检测浓度超过了报警阈值并且处于敏感时间段。那么3号监测报警单元将通过自身的声光报警装置发出报警信息，并通过无线通信方式将报警信息发送给现场主控制器，现场主控制器处理信息后发现满足第二条应急联动规则，所以通过电话报警模块呼叫设定号码实现电话报警。In use, it is assumed that the detection concentration of No. 3 monitoring and alarm unit exceeds the alarm threshold and is in a sensitive time period. Then No. 3 monitoring and alarm unit will send alarm information through its own sound and light alarm device, and send the alarm information to the on-site main controller through wireless communication. After processing the information, the on-site main controller finds that it meets the second emergency linkage rule, so Call the set number through the telephone alarm module to realize telephone alarm.
具体实施例2。本实施例为发生在室外的液氢输送实验环境。实验环境中包括一个液氢生产站A，一个液氢中继站B和一个液氢利用站C。每个站点中都有相应的液氢处理设备并且处于室外，生产站与中继站以及中继站与利用站间通过液氢输送管道连接，站点之间相距距离较远。为了保证实验安全，须要实验各个环节进行泄漏检测。如图7所示，在本实施例中，分别在三个站点部署了1号、2号和3号监控子网络。三个子网络中的现场主控制器均通过4G通信模块接入到互联网。在每个监控子网络的管道及设备的易漏接头处通过半封闭安装形式安装了监测报警单元，各个监测报警单元与对应的现场主控制器间通过有线通信方式相连。每个子网络中安装一个电话报警模块，电话报警模块通过有线通信方式与相应的现场主控制器相连。整个监测系统使用了监控主机，监控主机连接到互联网，监控主机与各个现场主控制器通过网络通信相连。Specific embodiment 2. This embodiment is an experimental environment for liquid hydrogen transportation that takes place outdoors. The experimental environment includes a liquid hydrogen production station A, a liquid hydrogen relay station B and a liquid hydrogen utilization station C. Each station has corresponding liquid hydrogen processing equipment and is located outdoors. The production station and the relay station and the relay station and the utilization station are connected by liquid hydrogen pipelines, and the distance between the stations is relatively long. In order to ensure the safety of the experiment, it is necessary to carry out leak detection in all aspects of the experiment. As shown in FIG. 7 , in this embodiment, No. 1, No. 2 and No. 3 monitoring sub-networks are respectively deployed at three sites. The on-site main controllers in the three sub-networks are all connected to the Internet through the 4G communication module. The monitoring and alarm units are installed in the leaky joints of the pipelines and equipment of each monitoring sub-network in a semi-closed installation form, and each monitoring and alarm unit is connected to the corresponding on-site main controller through wired communication. A telephone alarm module is installed in each sub-network, and the telephone alarm module is connected with the corresponding on-site main controller through wired communication. The entire monitoring system uses a monitoring host, which is connected to the Internet, and the monitoring host is connected to each field main controller through network communication.
在使用过程中，可以通过监控主机同时对三个监控子网络进行监控。每个监控子网络都可以像实施例1中描述的那样独立地进行监控报警工作。During use, three monitoring sub-networks can be monitored simultaneously through the monitoring host. Each monitoring sub-network can perform monitoring and alarm work independently as described in Embodiment 1.
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| CN107248266Atrue CN107248266A (en) | 2017-10-13 |
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| CN201710451678.5APendingCN107248266A (en) | 2017-06-15 | 2017-06-15 | A kind of distributed pernicious gas monitoring and alarming system |
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