CN204044599U - Based on the fire monitoring safety-protection system of Internet of Things - Google Patents
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Abstract
本实用新型公开了一种基于物联网的火情监测安防系统，包括监测节点、网关节点、路由器、执行模块、太阳供电模块和监控中心。所述的监测节点负责采集现场的数据，ZigBee网络将现场采集的数据传送到网关节点，网关节点对传送过来的数据进行相应的处理并存储，路由器将网关节点的信息进行翻译，由互联网负责将网关节点的信息传送到监控中心，监控中心对现场采集的数据进行分析处理，然后下达命令，互联网将该命令传送到执行模块，太阳能供电模块为其他各模块提供所需的电能，通过监控中心对火情加以监控，一旦火灾发生系统能够自动的开启喷水装置和干粉装置对火源迅速的加以控制并将其扑灭，该系统可以用在企业、医院、校园、社区、矿区等地方。
The utility model discloses a fire monitoring security system based on the internet of things, which comprises a monitoring node, a gateway node, a router, an execution module, a solar power supply module and a monitoring center. The monitoring node is responsible for collecting the data on the spot, and the ZigBee network transmits the data collected on the spot to the gateway node, and the gateway node processes and stores the transmitted data accordingly, and the router translates the information of the gateway node, and the Internet is responsible for translating The information of the gateway node is transmitted to the monitoring center, and the monitoring center analyzes and processes the data collected on site, and then issues an order, which is transmitted to the execution module by the Internet, and the solar power supply module provides the required electric energy for other modules, and the The fire is monitored. Once a fire occurs, the system can automatically turn on the water spray device and the dry powder device to quickly control the fire source and extinguish it. The system can be used in enterprises, hospitals, campuses, communities, mining areas and other places.
Description
技术领域 technical field
本发明涉及一种消防技术，尤其涉及到一种基于物联网的火情监测安防系统技术领域。 The invention relates to a fire protection technology, in particular to the technical field of a fire monitoring security system based on the Internet of Things. the
背景技术 Background technique
随着经济的发展，人民生活水平的提高，对火情的监测预防越来越引起人民的重视，现在的大多数单位都按照消防要求安装了火情预警系统，自动灭火喷淋系统，这些措施在一定程度上起到了应有的作用，但是没有相互联网不能够将现场的最新情况告之相关单位和相关人员，火情的发生不能够及时的确定在具体的位置，有些火源的火情不适合用水进行扑灭，一旦发现有火情供电系统就要被迫中断，自动灭火系统有可能因断电而不能正常工作，将太阳能发电技术和物联网技术运用在安防系统上，弥补了现有安防系统的不足。 With the development of the economy and the improvement of people's living standards, the monitoring and prevention of fires has attracted more and more attention from the people. Most units now have installed fire early warning systems and automatic fire extinguishing sprinkler systems in accordance with fire protection requirements. These measures To a certain extent, it has played its due role, but without the Internet, it is impossible to inform the relevant units and personnel of the latest situation on the scene, and the occurrence of the fire cannot be determined in a specific location in time. It is not suitable for extinguishing with water. Once a fire is found, the power supply system will be interrupted. The automatic fire extinguishing system may not work normally due to power failure. The application of solar power generation technology and Internet of Things technology in the security system makes up for the existing Insufficient security system. the
发明内容 Contents of the invention
本发明的目的在于克服以上问题，提供一种基于物联网的火情监测安防系统，系统充分的利用太阳能资源进行工作，对火情实时的监控，一旦火灾发生能够自动启动喷水装置和干粉装置对火源进行控制。 The purpose of the present invention is to overcome the above problems and provide a fire monitoring and security system based on the Internet of Things. The system makes full use of solar energy resources to monitor the fire in real time. Once a fire occurs, the water spray device and the dry powder device can be automatically activated. Control the fire source. the
为实现上述目的，本发明是通过以下技术方案来实现的。 In order to achieve the above object, the present invention is achieved through the following technical solutions. the
一种基于物联网的火情监测安防系统，其特征在于：包括监测节点、网关节点、路由器、执行模块，太阳能供电模块和监控中心；所述的监测节点负责采集现场的数据，ZigBee网络将现场采集的数据传送到网关节点，网关节点对传送过来的数据进行相应的处理并存储，路由器将网关节点的信息进行翻译，由互联网负责将网关节点的信息传送到监控中心，监控中心对现场采集的信息进行分析处理，然后下达命令，互联网将该命令传送到执行模块。 A kind of fire monitoring and security system based on Internet of Things is characterized in that: comprise monitoring node, gateway node, router, executive module, solar power supply module and monitoring center; Described monitoring node is responsible for gathering the data of the scene, ZigBee network will The collected data is transmitted to the gateway node, the gateway node processes and stores the transmitted data accordingly, the router translates the information of the gateway node, and the Internet is responsible for transmitting the information of the gateway node to the monitoring center, and the monitoring center collects on-site data The information is analyzed and processed, and then an order is issued, which is transmitted by the Internet to the execution module. the
所述的监测节点包括传感器模块、微处理器单元、通信单元、视像采集单元、报警器，传感器模块、报警器和视像采集单元分别与微处理器单元连接，传感器模块采集监测现场的数据，视像采集单元采集现场的视频和图像，微处理器模块对采集的现场信息进行调理，报警器遇到异常情况时发出报警，通信单元用于将采集的现场信息传送到ZigBee网络。 Described monitoring node comprises sensor module, microprocessor unit, communication unit, video acquisition unit, alarm, sensor module, alarm and video acquisition unit are connected with microprocessor unit respectively, and sensor module collects the data of monitoring scene , the video acquisition unit collects on-site video and images, the microprocessor module adjusts the collected on-site information, the alarm sends out an alarm when it encounters an abnormal situation, and the communication unit is used to transmit the collected on-site information to the ZigBee network. the
所述的传感器模块包括烟雾传感器、气体传感器、温度传感器、热释电红外传感器。 The sensor module includes a smoke sensor, a gas sensor, a temperature sensor, and a pyroelectric infrared sensor. the
所述的网关节点包括ZigBee汇聚节点、控制器、视频监视单元、以太网通信单元，以太网通信单元负责将ZigBee网络的信号进行转换并将该信号传送至互联网，ZigBee汇聚节点接收传感器模块和视像采集单元的信息、视频监视单元负责监视现场视像采集单元采集的信息，所述的控制器包括处理器、存储器。 Described gateway node comprises ZigBee converging node, controller, video monitoring unit, Ethernet communication unit, and Ethernet communication unit is responsible for converting the signal of ZigBee network and this signal is sent to Internet, and ZigBee converging node receives sensor module and video Like the information of the acquisition unit, the video monitoring unit is responsible for monitoring the information collected by the on-site video acquisition unit, and the controller includes a processor and a memory. the
所述的监控中心包括微处理器控制模块、数据存储单元、数据查询单元、声光报警器、远程控制单元、显示单元，数据存储单元、数据查询单元、声光报警器、远程控制单元、显示单元分别与微处理器控制模块连接。 Described monitoring center comprises microprocessor control module, data storage unit, data query unit, sound and light alarm, remote control unit, display unit, data storage unit, data query unit, sound and light alarm, remote control unit, display The units are respectively connected with the microprocessor control module. the
所述的执行模块包括通信模块、微处理器模块、喷水装置和干粉装置，喷水装置和干粉装置分别与微处理器模块相连，喷水装置和干粉装置负责对火源进行灭火，通信模块接收控制中心的命令并将其送给微处理器模块进行调理，转换成具体要执行的信号。 The execution module includes a communication module, a microprocessor module, a water spray device and a dry powder device, the water spray device and the dry powder device are connected to the microprocessor module respectively, the water spray device and the dry powder device are responsible for extinguishing the fire source, and the communication module Receive the command of the control center and send it to the microprocessor module for conditioning, and convert it into a specific signal to be executed. the
所述的太阳能供电模块包括太阳能电池板、光伏控制器、蓄电池、转换电路、电能输出端口，蓄电池与光伏控制器双向连接，太阳能电池板和转换电路分别与控制器连接，电能输出端口与转换电路相连。 The solar power supply module includes a solar battery panel, a photovoltaic controller, a storage battery, a conversion circuit, and an electric energy output port. The storage battery is bidirectionally connected to the photovoltaic controller, the solar battery panel and the conversion circuit are respectively connected to the controller, and the electrical energy output port is connected to the conversion circuit. connected. the
本发明的有益效果是：本发明提供了一种基于物联网火情监测安防系统的技术，该系统充分利用自然界的太阳光能供电，减少了传统能源的消耗，节能 环保，实时的监控现场并采集现场的数据，对数据进行分析判断，能够及时准确的掌握现场情况，将不安全因素及时的清除，一旦发生火情系统迅速的启动喷水装置和干粉装置进行灭火。 The beneficial effects of the present invention are: the present invention provides a technology based on the Internet of Things fire monitoring and security system, which fully utilizes natural solar energy for power supply, reduces the consumption of traditional energy, saves energy and protects the environment, and monitors the scene in real time. Collect on-site data, analyze and judge the data, be able to grasp the on-site situation in a timely and accurate manner, and remove unsafe factors in a timely manner. Once a fire occurs, the system will quickly activate the water spray device and dry powder device to extinguish the fire. the
附图说明 Description of drawings
图1是本发明的系统结构框图。 Fig. 1 is a system structure block diagram of the present invention. the
图2是本发明的太阳能供电模块结构框图。 Fig. 2 is a structural block diagram of the solar power supply module of the present invention. the
图3是本发明的太阳能供电系统框图。 Fig. 3 is a block diagram of the solar power supply system of the present invention. the
图4是本发明的监测节点结构框图。 Fig. 4 is a structural block diagram of the monitoring node of the present invention. the
图5是本发明的网关节点结构框图。 Fig. 5 is a structural block diagram of the gateway node of the present invention. the
图6是本发明的监控中心结构框图。 Fig. 6 is a structural block diagram of the monitoring center of the present invention. the
具体实施方式 Detailed ways
为了使本发明的目的、技术方案及创作特性更加清楚明白，下面结合附图，对本发明做进一步的详细说明。 In order to make the purpose, technical solution and creative characteristics of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. the
如图1所示，一种基于物联网的火情监测安防系统，包括监测节点、网关节点、路由器、执行模块、太阳能供电模块和监控中心；所述的监测节点负责采集现场的数据，ZigBee网络将现场采集的数据传送到网关节点，网关节点对传送过来的数据进行相应的处理并存储，路由器将网关节点的信息进行翻译，由互联网负责将网关节点的信息传送到监控中心，监控中心对现场采集的信息进行分析处理，然后下达命令，互联网将该命令传送到执行模块，太阳能供电模块为该系统提供工作所需的电能。 As shown in Figure 1, a kind of fire monitoring and security system based on the Internet of Things includes a monitoring node, a gateway node, a router, an execution module, a solar power supply module and a monitoring center; The data collected on site is transmitted to the gateway node, and the gateway node processes and stores the transmitted data accordingly. The router translates the information of the gateway node, and the Internet is responsible for transmitting the information of the gateway node to the monitoring center. The collected information is analyzed and processed, and then an order is issued, and the Internet transmits the order to the execution module, and the solar power supply module provides the power required for the system to work. the
如图2、图3所示，太阳能供电模块包括太阳能电池板、光伏控制器、蓄电池、转换电路、电能输出端口，蓄电池与光伏控制器双向连接，太阳能电池板和转换电路分别与光伏控制器连接，电能输出端口与转换电路相连；光伏控 制器由微处理器、充电电路、放电电路和检测电路组成，充电电路、放电电路和检测电路分别与微处理器连接，微处理器为单片机，太阳能电池板放置在有足够的太阳光照射的地方，太阳能电池板吸收光能并将其转化为电能，经过充电电路的管理存储在蓄电池中，当检测电路检测到电能输出端口有负载需要供电时，放电电路就开启与蓄电池、转换电路组成闭合回路，将蓄电池中的电能输送给转换电路，转换电路根据电能输出端口负载所需的电压、电流进行转换，满足电能输出端口不同负载工作所需的电能，该负载是指系统中的监测节点、网关节点、路由器、执行模块和监控中心，太阳能供电模块不少于两个，监控中心单独使用一个太阳能供电模块，根据实际工作的需要太阳能供电模块可以增加。 As shown in Figure 2 and Figure 3, the solar power supply module includes a solar panel, a photovoltaic controller, a battery, a conversion circuit, and an electric energy output port. The battery is connected to the photovoltaic controller in two directions, and the solar panel and the conversion circuit are respectively connected to the photovoltaic controller. , the power output port is connected to the conversion circuit; the photovoltaic controller is composed of a microprocessor, a charging circuit, a discharging circuit and a detection circuit. The charging circuit, the discharging circuit and the detection circuit are respectively connected to the microprocessor. The solar panel is placed in a place where there is enough sunlight. The solar panel absorbs the light energy and converts it into electrical energy. After the management of the charging circuit, it is stored in the battery. When the detection circuit detects that the power output port has a load that needs to be powered, The discharge circuit is turned on to form a closed loop with the battery and the conversion circuit, and the electric energy in the battery is delivered to the conversion circuit. The conversion circuit converts according to the voltage and current required by the load of the power output port to meet the power required by the different loads of the power output port. , the load refers to the monitoring node, gateway node, router, execution module and monitoring center in the system. There are no less than two solar power supply modules. The monitoring center uses a single solar power supply module. According to the actual work needs, the solar power supply module can be increased . the
如图4所示，监测节点包括传感器模块、微处理器单元、通信单元、视像采集单元、报警器，传感器模块、报警器和视像采集单元分别与微处理器单元连接，传感器模块采集监测现场的数据，视像采集单元采集现场的视频和图像，微处理器模块对采集的现场信息进行滤波、去噪、放大等处理，通信单元用于将采集的现场信息传送到ZigBee网络，当遇到异常情况时报警器发出报警，提醒工作人员查找原因，及时处理可能发生的情况，并对现场人员进行疏散避险。传感器模块包括烟雾传感器、气体传感器、温度传感器、热释电红外传感器，它们之间通过并行连接于微处理器单元；烟雾传感器采用郑州炜盛电子科技有限公司生产的M-5/6/7/9系列烟雾传感器，当该传感器所处环境中存在可燃气体时，它的电导率随空气中可燃气体浓度的增加而增大，使用简单的电路即可将电导率的变化转换为与该气体浓度相对应的输出信号，可检测多种可燃性气体，是一款适合多种应用的低成本传感器；气体传感器采用深圳鑫赛创电子科技有限公司生产的NAP-50A催化燃烧式气体传感器，可以探测甲烷、丙 烷、氢气、碳化氢等气体，该传感器功耗低、高速应答、体型小，具有防误报功能；温度传感器采用南京五石金传感技术有限公司生产的GX-01/02光纤温度传感器，可以对较高温度进行测量；热释电红外传感器采用德国InfraTec公司研发的专门探测火焰的热释电红外传感器Lie302，该传感器的光敏层是由锂钽酸盐单一晶体化合物组成，是一种热电晶体；视像采集单元为摄像头，放置在所需监测的地方，实时采集现场的图像和视频。 As shown in Figure 4, the monitoring node includes a sensor module, a microprocessor unit, a communication unit, a video acquisition unit, and an alarm. The sensor module, the alarm, and the video acquisition unit are respectively connected to the microprocessor unit, and the sensor module collects and monitors On-site data, the video acquisition unit collects on-site video and images, the microprocessor module filters, denoises, and amplifies the collected on-site information, and the communication unit is used to transmit the collected on-site information to the ZigBee network. When there is an abnormal situation, the alarm will send out an alarm to remind the staff to find out the cause, deal with the possible situation in time, and evacuate the on-site personnel to avoid danger. The sensor module includes smoke sensor, gas sensor, temperature sensor, and pyroelectric infrared sensor, which are connected to the microprocessor unit in parallel; the smoke sensor adopts M-5/6/7/ 9 series smoke sensor, when there is combustible gas in the environment where the sensor is located, its conductivity increases with the increase of the concentration of combustible gas in the air, and the change of conductivity can be converted into the concentration of the gas by using a simple circuit The corresponding output signal can detect a variety of flammable gases. It is a low-cost sensor suitable for various applications; the gas sensor adopts the NAP-50A catalytic combustion gas sensor produced by Shenzhen Xinsaichuang Electronic Technology Co., Ltd., which can detect Methane, propane, hydrogen, hydrocarbon and other gases, the sensor has low power consumption, high-speed response, small size, and anti-false alarm function; the temperature sensor adopts GX-01/02 optical fiber produced by Nanjing Wushi Jinsensing Technology Co., Ltd. The temperature sensor can measure higher temperatures; the pyroelectric infrared sensor adopts the pyroelectric infrared sensor Lie302 specially developed by InfraTec Company of Germany to detect flames. The photosensitive layer of the sensor is composed of a single crystal compound of lithium tantalate. A pyroelectric crystal; the video acquisition unit is a camera, which is placed in the place to be monitored and collects images and videos of the scene in real time. the
每个监测节点都有一个唯一的ID号，监控中心通过这个唯一的ID号进行识别，可以判定异常情况出现在具体的地方，监测节点与监测节点之间通过ZigBee网络进行通信，每间隔60米放置一个监测节点，信息传递的半径为60米，各个节点组成网状结构，而且还可以作为中继节点，将监测节点采集的现场信息通过ZigBee网络传递到ZigBee汇聚节点。ZigBee技术是一种近距离、低复杂度、低功耗、低成本的双向无线通信技术，ZigBee的自组织功能：无需人工干预，网络节点能感知其他节点的存在，并确定连接关系，组成结构化的网络；ZigBee自愈功能：增加、删除或移动节点，当节点发生故障时，网络能够自我修复无需人工干预，保证整个系统仍然能正常工作。 Each monitoring node has a unique ID number. The monitoring center can identify the specific place through this unique ID number. The monitoring node communicates with the monitoring node through the ZigBee network, with an interval of 60 meters. Place a monitoring node, the radius of information transmission is 60 meters, each node forms a network structure, and can also be used as a relay node to transmit the field information collected by the monitoring node to the ZigBee sink node through the ZigBee network. ZigBee technology is a short-distance, low-complexity, low-power, low-cost two-way wireless communication technology. ZigBee's self-organizing function: without manual intervention, network nodes can sense the existence of other nodes, determine the connection relationship, and form a structure ZigBee self-healing function: adding, deleting or moving nodes, when a node fails, the network can self-repair without manual intervention, ensuring that the entire system can still work normally. the
如图5所示，网关节点包括ZigBee汇聚节点、控制器、视频监视单元、以太网通信单元，以太网通信单元负载将ZigBee网络的信号进行转换通过路由器将该信号传送至互联网，ZigBee汇聚节点接收传感器模块和视像采集单元的信息、视频监视单元负责监视现场视像采集单元采集的信息，所述的控制器包括处理器、存储器，处理器对ZigBee汇聚节点的信息进行调理，处理后的信息存储在存储器中。 As shown in Figure 5, the gateway node includes a ZigBee aggregation node, a controller, a video monitoring unit, and an Ethernet communication unit. The load of the Ethernet communication unit converts the signal of the ZigBee network and transmits the signal to the Internet through a router, and the ZigBee aggregation node receives the signal. The information of the sensor module and the video acquisition unit, the video monitoring unit are responsible for monitoring the information collected by the on-site video acquisition unit, and the controller includes a processor and a memory, and the processor adjusts the information of the ZigBee convergence node, and the processed information stored in memory. the
如图6所示，监控中心包括微处理器控制模块、数据存储单元、数据查询单元、声光报警器、远程控制单元、显示单元，数据存储单元、数据查询单 元、声光报警器、远程控制单元、显示单元分别与微处理器控制模块连接。网关节点将现场采集的信息调理后通过互联网传送到监控中心，实时的监控现场的环境参数，对互联网传递过来的信息进行综合分析、判断，同时在显示单元上显示(显示的是数据和视像)，数据存储单元负责将大量的信息按照时间的先后顺序和信息类别进行有序归类存储，数据查询单元负责对历史数据信息进行查询，还可以对查询的信息进行输出打印，微处理器控制模块对采集的大量信息进行分析、判断，将异常的数据以红色在显示单元上显示出来，提醒工作人员及时的查找原因并快速的处理，将可能发生的危险排除掉，由于每个监测节点都有一个唯一的ID号，监控中心通过这个唯一的ID号进行识别，判定异常出现的具体地点，一旦火情发生，声光报警器动作发出报警，同时该报警信号连接至119中心和120中心，消防人员和医护人员迅速赶赴现场进行协调指挥，提供相关的救助。 As shown in Figure 6, the monitoring center includes a microprocessor control module, data storage unit, data query unit, sound and light alarm, remote control unit, display unit, data storage unit, data query unit, sound and light alarm, remote The control unit and the display unit are respectively connected with the microprocessor control module. The gateway node adjusts the information collected on site and transmits it to the monitoring center through the Internet, monitors the environmental parameters of the site in real time, conducts comprehensive analysis and judgment on the information transmitted from the Internet, and displays it on the display unit at the same time (displays data and video ), the data storage unit is responsible for orderly classifying and storing a large amount of information according to the order of time and information category, the data query unit is responsible for querying historical data information, and can also output and print the query information, and the microprocessor control The module analyzes and judges a large amount of collected information, displays abnormal data in red on the display unit, reminds the staff to find out the cause in time and handle it quickly, and eliminates possible dangers. Since each monitoring node is There is a unique ID number, through which the monitoring center can identify and determine the specific location where the abnormality occurs. Once a fire occurs, the sound and light alarm will send out an alarm, and the alarm signal will be connected to the 119 center and 120 center. Firefighters and medical personnel rushed to the scene to coordinate and direct and provide relevant rescue. the
远程控制单元负责对网关节点和监测节点进行实时的监视和控制，远程控制单元根据微处理器控制模块发出的信息下达命令，该命令由互联网向网关节点、监测节点和执行模块传送，执行模块由通信模块、微处理器模块、喷水装置和干粉装置组成，喷水装置和干粉装置分别与微处理器模块相连；由于一些火源不适合用水进行灭火，如一些油类、带电设备等发生火情，需要使用干粉进行灭火，根据不同的火源采用合理的方式进行灭火，一旦火灾发生时监控中心发出命令，通信模块接收监控中心的命令并将其送给微处理器模块进行调理，转换成具体要执行的信号，决定是启用干粉装置自动灭火或启动喷水装置自动灭火，还是二者分先后顺序进行灭火，对火源加以迅速的控制，将火灾损失降低到最小。 The remote control unit is responsible for real-time monitoring and control of the gateway nodes and monitoring nodes. The remote control unit issues commands according to the information sent by the microprocessor control module. The commands are transmitted from the Internet to the gateway nodes, monitoring nodes and execution modules. Composed of a communication module, a microprocessor module, a water spray device and a dry powder device, the water spray device and the dry powder device are respectively connected to the microprocessor module; because some fire sources are not suitable for fire extinguishing with water, such as some oils, live equipment, etc. In the event of a fire, it is necessary to use dry powder to extinguish the fire, and use a reasonable method to extinguish the fire according to different fire sources. Once a fire occurs, the monitoring center sends out a command, and the communication module receives the command from the monitoring center and sends it to the microprocessor module for conditioning, which is converted into The specific signal to be executed determines whether to use the dry powder device to automatically extinguish the fire or to activate the sprinkler device to automatically extinguish the fire, or whether the two are put out in sequence, and the fire source is quickly controlled to minimize the fire loss. the
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| CN105788149A (en) * | 2016-05-17 | 2016-07-20 | 广西职业技术学院 | Safety management system of the fire control in colleges based on the internet of things technology |
| CN105854210A (en) * | 2016-04-25 | 2016-08-17 | 武汉理工大学 | Intelligent fire extinguishing system and method based on distributed pyroelectric sensing network |
| CN106558163A (en) * | 2015-09-28 | 2017-04-05 | 哈尔滨东方报警设备开发有限公司 | A kind of solar energy fire prevention audible-visual annunciator |
| CN106597918A (en) * | 2016-10-28 | 2017-04-26 | 江苏金米智能科技有限责任公司 | Intelligent building fire monitoring system based on wireless sensor network |
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| CN106961586B (en) * | 2017-04-14 | 2018-10-09 | 特斯联（北京）科技有限公司 | A kind of Office Area safety monitoring system based on Internet of Things |
| CN108305426A (en) * | 2017-07-25 | 2018-07-20 | 四川雷克斯智慧科技股份有限公司 | Fire scene intelligent analysis system |
| CN107734040A (en) * | 2017-10-24 | 2018-02-23 | 徐州新南湖科技有限公司 | Ventilation blower communication component and Internet of things system |
| CN108776448A (en) * | 2018-06-26 | 2018-11-09 | 无锡南理工科技发展有限公司 | The Internet of Things computer long-distance monitorng device of multiple-protection |
| CN110164095A (en) * | 2019-05-15 | 2019-08-23 | 南京邮电大学 | A kind of solid intelligent air monitor and alarm system |
| CN110333171A (en) * | 2019-08-12 | 2019-10-15 | 山东科技大学 | Method and system for detecting dust concentration at transfer point of coal conveying system |
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