CN204189461U - Nuclear power station remote supervision system - Google Patents

Abstract

The utility model provides a remote monitoring system for nuclear power plants. The system includes monitoring nodes arranged at multiple monitoring points to form a wireless sensor network system and communicate with a remote monitoring center. The monitoring nodes include sensor nodes, microcontrollers, Video monitoring module, wireless communication module, peripheral circuit, street light control module and power supply module; sensor nodes are placed at monitoring points, including nuclear radiation sensor modules and meteorological sensor modules independently inserted on functional circuit boards; microcontrollers and sensors The nodes are connected, and the microcontroller is connected with the wireless communication module through the peripheral circuit; the microcontroller is also connected with the street lamp control module and the power supply module through the peripheral circuit; the video monitoring module is connected with the microcontroller for collecting video data and The video data is transmitted to the gateway connected with the remote monitoring center through the communication cable. The system can improve monitoring accuracy and has strong adaptability.

Description

Nuclear Power Plant Remote Monitoring System

technical field

The utility model relates to nuclear power plant monitoring technology, in particular to a nuclear power plant remote monitoring system.

Background technique

Nuclear emergency preparedness and response are effective measures to control and mitigate possible personal injury, property damage and environmental damage caused by nuclear radiation accidents, and are also an important aspect of effectively handling nuclear terrorist attacks and ensuring public safety. The current remote monitoring system of nuclear power plants is composed of a few fixed monitoring stations. These fixed monitoring stations are distributed within more than ten kilometers around the nuclear power plant to monitor the nuclear radiation in the surrounding atmospheric environment. However, in the traditional nuclear power plant remote monitoring system, the monitoring station is only composed of sensors for monitoring nuclear radiation. Due to the low density of several fixed monitoring stations, the monitoring accuracy will be affected, and the failure of a single monitoring station will cause a large area to be unable to be monitored in time. , and the ability to respond to emergencies is relatively weak.

Utility model content

Based on this, it is necessary to provide a remote monitoring system for nuclear power plants that can improve monitoring accuracy and has strong adaptability to address the above technical problems.

A nuclear power plant remote monitoring system, the system includes a monitoring node arranged at multiple monitoring points to form a wireless sensor network system and communicates with a remote monitoring center, the monitoring node includes a sensor node, a microcontroller, a video monitoring module , wireless communication module, peripheral circuit, street lamp control module and power supply module;

The sensor node is placed at the monitoring point, including a nuclear radiation sensor module and a meteorological sensor module independently inserted on a functional circuit board; the microcontroller is connected to the sensor node, and the microcontroller is connected to the sensor node through the peripheral The circuit is connected with the wireless communication module, and is used to receive the data collected by the sensor node and transmit it to the remote monitoring center through the wireless communication module; the microcontroller is also connected with the street lamp control module and the Power module connection;

The video monitoring module is connected with the microcontroller for collecting video data and transmitting the video data to a gateway connected to the remote monitoring center through a communication cable.

In one of the embodiments, the street lamp control module includes a voltage and current detection module, a photosensitive controller and a relay for controlling the switch of the street lamp according to the intensity of light detected by the photosensitive controller, the voltage and current detection module, the photosensitive controller The controller and the relay are respectively electrically connected with the peripheral circuit; the voltage and current detection module is used to transmit the detected voltage and current value to the wireless communication module through the peripheral circuit.

In one of the embodiments, the video monitoring module is a network camera with an AMR processor.

In one of the embodiments, the power module includes a battery connected to 220V alternating current and an inverter circuit electrically connected to the battery.

In one of the embodiments, the inverter circuit includes an inverter electrically connected to the storage battery, a transfer switch electrically connected to the inverter, and a filter electrically connected to the transfer switch; the power supply The module also includes a power transformer connected to 220V alternating current, and the power transformer is also electrically connected to the transfer switch.

In one of the embodiments, the wireless communication module is a Zigbee module, including a radio frequency antenna and a crystal oscillator respectively connected to the peripheral circuit.

In one of the embodiments, the system further includes an alarm connected to the microcontroller.

Compared with the traditional system with only a few fixed monitoring stations, the above-mentioned remote monitoring system for nuclear power plants can increase the monitoring density and thereby improve the monitoring accuracy by forming a wireless sensor network system with multiple monitoring nodes. In addition, the system includes a street lamp control module and a video surveillance module, which can effectively control street lamps and grasp the situation on the spot in case of emergencies, thereby improving the adaptability.

Description of drawings

Fig. 1 is a schematic diagram of the connection between the nuclear power plant remote monitoring system and the remote monitoring center in one embodiment;

Fig. 2 is a schematic structural diagram of a monitoring node in an embodiment;

Fig. 3 is the schematic diagram that microcontroller connects with wireless communication module through peripheral circuit in one embodiment;

Fig. 4 is a schematic diagram of the connection between the street lamp control module and the peripheral circuit in one embodiment;

Fig. 5 is a schematic structural diagram of a power module in an embodiment.

Detailed ways

As shown in Figure 1, in one embodiment, a remote monitoring system for nuclear power plants is provided, including a monitoring node 1 arranged at multiple monitoring points to form a wireless sensor network system and communicate with a remote monitoring center, the monitoring node It is connected to the gateway 2 through a communication cable, and the gateway 2 and the remote monitoring center, that is, the server base station 3, perform signal transmission through the communication network.

As shown in FIG. 2 , the monitoring node 1 includes a sensor node 11 , a microcontroller 12 , a video monitoring module 13 , a wireless communication module 14 , a street lamp control module 15 and a power supply module 16 . in:

The sensor node 11 is placed at a monitoring point, and the monitoring point is deployed in a nuclear radiation monitoring site, and includes a nuclear radiation sensor module and a meteorological sensor module independently inserted on a functional circuit board. The nuclear radiation sensor module can be a traditional nuclear radiation detector, which is used to detect alpha rays, beta rays and gamma rays, etc., and obtain radiation values of alpha rays, beta rays and gamma rays. The meteorological sensor module is an air quality detector to detect PM2.5, humidity and temperature. In this embodiment, a large number of nuclear radiation detectors and air quality detectors can be deployed at the monitoring site according to actual needs.

Microcontroller 12 is connected to sensor node 11 . As shown in FIG. 3 , the microcontroller 12 can be connected to various sensor nodes through a USART (Universal Synchronous/Asynchronous Receiver/Transmitter, universal synchronous/asynchronous serial receiver/transmitter) interface. For example, nuclear radiation detectors provide RS232/RS485/parallel data transmission ports to transmit detected data to microcontrollers for processing. The air quality detector is connected to the microcontroller through the RS232/RS485 communication interface, and the detected data is transmitted to the microcontroller for processing. The microcontroller 12 is connected with the wireless communication module 14 through the peripheral circuit 17 , and is used to receive the data collected by the sensor nodes and transmit them to the remote monitoring center 3 through the wireless communication module 14 . For example, the radiation values of α-rays, β-rays and γ-rays detected by nuclear radiation detectors, and data such as PM2.5, humidity and temperature detected by air quality detectors are transmitted to the remote monitoring center 3 through the wireless communication module 14 . The peripheral circuit 17 is used to realize data and signal routing, and may be a CC2530 peripheral circuit. As shown in FIG. 3 , the peripheral circuit 17 is electrically connected to the microcontroller 12 through an SPI (Serial Peripheral Interface, Serial Peripheral Interface) interface and a control line interface and provides a synchronous clock signal to the microcontroller 12.

Referring to FIG. 2 again, the microcontroller 12 is also connected to the street lamp control module 15 and the power supply module 16 through the peripheral circuit 17 . The street lamp control module 15 is used to control the switch of the street lamp, and the power module 16 is used to provide power for the monitoring node.

The video monitoring module 13 is connected with the microcontroller 12 for collecting video data and transmitting the video data to the gateway 2 connected with the remote control center 3 through a communication cable. In this embodiment, the microcontroller 12 can be connected to the Ethernet serial port conversion module, and the Ethernet serial port conversion module is connected to the communication cable to transmit the video data to the gateway 2, and the gateway 2 and the remote monitoring center, that is, the server base station 3, carry out signals Transmission, the video data is transmitted to the remote monitoring center 3 through the communication network. In this embodiment, the video monitoring module 13 is a network camera with an AMR processor, and the network camera can monitor the scene in real time.

As shown in Figure 2, in one embodiment, the monitoring node 1 also includes an alarm 19 connected to the microcontroller 12, and the microcontroller 12 sends a signal to the alarm 19 when the received nuclear radiation value exceeds a set value , alarm 19 on-site alarm.

Each module shown in Figure 2 can be independently installed on the functional circuit board. The circuit board is a plug-and-play circuit board. The circuit board provides interfaces for each node and module to provide stable power. The processor manages and controls each module. Each module will not interfere with each other when working, and among independent nodes, the quality of one node will not affect the work of other nodes.

As shown in FIG. 3 , the wireless communication module 14 is connected to the peripheral circuit 17 , is a Zigbee module, and includes a radio frequency antenna 141 and a crystal oscillator 142 respectively connected to the peripheral circuit 17 . The Zigbee module adopts the Direct Sequence Spread Spectrum (DSSS) modulation specified in the 802.15.4 MAC/PHY specification to work in a fixed channel, and the radio frequency band is 2.4 GHz.

As shown in Figure 4, the street lamp control module 15 includes a voltage and current detection module 151, a photosensitive controller 152 and a relay 153 for controlling the street lamp switch according to the intensity of light detected by the photosensitive controller 152, the voltage and current detection module 151, the photosensitive control The device 152 and the relay 153 are respectively electrically connected to the peripheral circuit 17 , and the voltage and current detection module 151 is used to transmit the detected voltage and current values to the wireless communication module 14 through the peripheral circuit 17 . The power supply module 16 is electrically connected with the peripheral circuit 17 and is used to convert the common AC power of the street lamp into a stable weak voltage to supply power to the street lamp control module 15 .

In one embodiment, as shown in FIG. 5 , the power module 16 includes a battery pack 161 connected to 220V AC power and an inverter circuit 162 electrically connected to the battery pack 161 . Further, it also includes a power transformer 163 connected to 220V AC. The inverter circuit 162 includes an inverter 1621 electrically connected to the battery pack 161 , a transfer switch 1622 electrically connected to the inverter 1621 , and a filter 1623 connected to the transfer switch 1622 . That is to say, the power supply module 16 adopts UPS uninterruptible power supply. Under normal circumstances, the UPS supplies 220V AC power to the load after being stabilized. When the 220V AC power is interrupted (for example, due to an accident, the power is cut off), the UPS immediately switches the DC power of the battery through the inverter 1621, the transfer switch 1622 and the filter 1623 to continue supplying power to the load. The power supply module 16 can also cut off the power supply in time to protect the equipment when the current surges due to external or internal environments such as lightning.

Compared with the traditional system with only a few fixed monitoring stations, the above-mentioned remote monitoring system for nuclear power plants can increase the monitoring density and thereby improve the monitoring accuracy by forming a wireless sensor network system with multiple monitoring nodes. In addition, the system includes a street lamp control module and a video surveillance module, which can effectively control street lamps and grasp the situation on the spot in case of emergencies, thereby improving the adaptability.

In the remote monitoring system for nuclear power plants mentioned above, each monitoring node is independent of each other, and each functional module in each monitoring node is independently inserted on the functional circuit board, which does not affect each other and has good scalability. For example, adding new sensor module. In the event of a nuclear accident or emergency, large-scale sensor networks are used to monitor environmental dose and weather, combined with real-time video monitoring and street light control, which facilitates the evacuation and disaster relief work, thus improving the resilience . In addition, because the data and video data collected by the sensor nodes will be transmitted to the remote monitoring center through the network, it is convenient for the managers working in the remote monitoring center to understand the on-site situation in real time.

The above-mentioned embodiments only express several implementations of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (7)

1. A nuclear power plant remote monitoring system, characterized in that the system includes a monitoring node arranged at a plurality of monitoring points to form a wireless sensor network system and communicates with a remote monitoring center, and the monitoring node includes a sensor node, a micro Controller, video monitoring module, wireless communication module, peripheral circuit, street light control module and power supply module; The sensor node is placed at the monitoring point, including a nuclear radiation sensor module and a meteorological sensor module independently inserted on a functional circuit board; the microcontroller is connected to the sensor node, and the microcontroller is connected to the sensor node through the peripheral The circuit is connected with the wireless communication module, and is used to receive the data collected by the sensor node and transmit it to the remote monitoring center through the wireless communication module; the microcontroller is also connected with the street lamp control module and the Power module connection; The video monitoring module is connected with the microcontroller for collecting video data and transmitting the video data to a gateway connected to the remote monitoring center through a communication cable. 2. The nuclear power plant remote monitoring system according to claim 1, characterized in that, The street lamp control module includes a voltage and current detection module, a photosensitive controller and a relay for controlling the switch of the street lamp according to the intensity of light detected by the photosensitive controller, and the voltage and current detection module, the photosensitive controller and the relay are respectively connected to the The peripheral circuit is electrically connected; the voltage and current detection module is used to transmit the detected voltage and current value to the wireless communication module through the peripheral circuit. 3. The nuclear power plant remote monitoring system according to claim 1, wherein the video monitoring module is a network camera with an AMR processor. 4. The nuclear power plant remote monitoring system according to claim 1, wherein the power module includes a battery pack connected to 220V AC and an inverter circuit electrically connected to the battery. 5. The nuclear power plant remote monitoring system according to claim 4, wherein the inverter circuit includes an inverter electrically connected to the battery pack, a transfer switch electrically connected to the inverter, and an inverter electrically connected to the inverter. A filter electrically connected to the transfer switch; the power module also includes a power transformer connected to 220V AC, and the power transformer is also electrically connected to the transfer switch. 6. The nuclear power plant remote monitoring system according to claim 1, wherein the wireless communication module is a Zigbee module, comprising a radio frequency antenna and a crystal oscillator respectively connected to the peripheral circuit. 7. The nuclear power plant remote monitoring system according to claim 1, characterized in that the system further comprises an alarm connected to the microcontroller.