CN103226983A - Radiation field three-dimensional monitoring system and detection method based on mesh topology - Google Patents
Radiation field three-dimensional monitoring system and detection method based on mesh topology Download PDFInfo
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- CN103226983A CN103226983A CN2013101476294A CN201310147629A CN103226983A CN 103226983 A CN103226983 A CN 103226983A CN 2013101476294 A CN2013101476294 A CN 2013101476294A CN 201310147629 A CN201310147629 A CN 201310147629A CN 103226983 A CN103226983 A CN 103226983A
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Abstract
The invention belongs to the technical field of nuclear power energy source, and especially relates to a radiation field three-dimensional monitoring system based on a nuclear power plant wireless mesh network. The monitoring system comprises detection nodes with a preset number, a wireless communication network workstation, and a three-dimensional monitoring platform. The detection nodes with preset number are sequentially connected with the wireless communication network workstation and the three-dimensional monitoring platform. The detection nodes are used for acquiring and transmitting detected radiation dose. The wireless communication network workstation is used for receiving and transmitting data in the network. The three-dimensional monitoring platform is used for carrying our analysis treatment and real-time display of the data detected by the detection nodes. With the system provided by the invention, wiring in the nuclear power plant is reduced, maintenance is simple, and cost is substantially reduced. With the system and the method, distribution regularities of environmental parameters of all regions are detected, and a numerical simulation model of the environmental parameters is established and optimized. With an optimal method of key measurement points plus high-precision derivation calculation model, three-dimensional visualization of the environmental parameters of regions and even the entire nuclear power plant can be realized.
Description
Technical field
The invention belongs to the nuclear power energy technology field, three-dimensional monitoring system of particularly a kind of radiation field and detection method based on fully connected topology.
Background technology
At present the instrument and the monitoring system of China's nuclear power station mainly adopt the wired monitoring technology, but under the nuclear power plant environment of sealing, intense radiation, corrosion, and wired monitoring exists wiring constraint, expense costliness, drawback difficult in maintenance; Wired monitoring for critical area in the containment needs perforate or fluting, and this will exert an influence to electric power radiation field, pressure and other parameters, also still can not accurately estimate the size that this class disturbance exerts an influence at present; In addition, radiation field distribution is based on radiation event in the containment in the factory building measured value is by calculating, counting accuracy is relatively poor at present, therefore the measured value of radiation intensity or dosage need be provided from the multizone multinode, for Model Optimization provides reference value, accurate and anti-interference strong wireless monitoring technology is very important.
Summary of the invention
The instrument and the monitoring system that the present invention is directed to present China nuclear power station mainly adopt the wired monitoring technology, there is the deficiency of wiring constraint, expense costliness, drawback difficult in maintenance in wired monitoring, has proposed a kind of radiation field three-dimensional monitoring system and method based on fully connected topology.
The three-dimensional monitoring system of a kind of radiation field of nuclear power station based on wireless mesh network, this monitoring system comprises probe node, wireless communication networks workstation and the three-dimensional monitoring platform of setting number, wherein,
The probe node of described setting number links to each other with three-dimensional monitoring platform successively with the wireless communication networks workstation;
Described probe node is arranged on each regional specific location of nuclear power plant, is used to gather and send the radiation dose that is detected;
Described wireless communication networks workstation is used for the reception and the transmission of network data;
Three-dimensional monitoring platform carries out exchanges data by wireless communication networks and detector, and the data that probe node is measured are carried out analyzing and processing and shown in real time;
Described probe node is made up of signal acquisition module, signal processing module, accumulator and radio receiving transmitting module, described signal acquisition module, signal processing module and radio receiving transmitting module link to each other successively, and described accumulator links to each other with the signal processing module radio receiving transmitting module with signal acquisition module respectively;
Described signal acquisition module is connected to form by detector and signal processing circuit unit;
Described signal processing module is connected to form by processor and reservoir;
Described radio receiving transmitting module is connected to form by wireless sensing chip and transceiver;
Described three-dimensional monitoring platform comprises ground, digitizing space module, data acquisition and processing module and three-dimensional display screen composition, and described data acquisition and processing module link to each other with the three-dimensional display screen group with ground, digitizing space module respectively;
Described data acquisition and processing module are made up of processing module, database, data acquisition module, and wherein, described processing module, database and data acquisition module link to each other successively.
Described probe node adopts the material of anti-high radiation.
The probe node of described setting number adopts the mode of multi-hop and self-organization to form wireless network.
The processing module of described data acquisition and processing module is used for setting alert threshold value, when the data of gathering surpass setting threshold, send the three-dimensional display screen group to show early warning warning information.
In the transceiver of the radio receiving transmitting module of described probe node clock is installed, described clock and local clock are synchronous automatically.
The detection method of described system, this method comprises the steps:
Step 1: probe node carries out initialization;
Step 2: probe node transmission request adds network signal, and judges whether the adding network is successful;
Step 3: if add network failure, then continue to send request and add network signal, if add the network success, probe node enters the dormant state of low-power consumption;
Step 4: probe node enters the dormant state of low-power consumption, waits for receiving the specific timing look-at-me;
Step 5: after probe node received the specific timing look-at-me, probe node withdrawed from dormant state, judged and received whether the specific timing look-at-me is the image data trigger pip;
Step 6: if when the specific timing look-at-me received is not the image data trigger pip, return step 4, if during the image data trigger pip, the information acquisition module of probe node carries out initialization;
Step 7: after the information acquisition module of probe node carried out initialization, the information acquisition module of probe node carried out data acquisition, and the data that collect send to three-dimensional monitoring platform by radio receiving transmitting module after handling through signal processing module;
Step 8: probe node detects data and sends whether success, and after detecting data and sending successfully, probe node enters the dormant state of low-power consumption once more, when detect data send fail after, probe node will continue the transmission data.
Beneficial effect of the present invention is: 1, reduce wiring in the nuclear power station, safeguard that simply cost significantly reduces; 2, under the specific run environment of nuclear power station, set up the wireless communication networks workstation, use advanced Detection Techniques, finish the wireless measurement of each regional environment parameter in the nuclear power station; 3, probe into each regional environment parameter distributions rule, the numerical simulator of foundation, the parameter of optimizing the environment, with the optimum mode of " key measurement point adds high precision and derives computation model ", realize the three-dimensional visualization of the environmental parameter of zone and even whole nuclear power station.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of system of the present invention;
Fig. 2 is the structural representation that probe node of the present invention is formed;
Fig. 3 is a MANET feature structure synoptic diagram of the present invention;
Fig. 4 is the structural representation of three-dimensional monitoring platform;
Fig. 5 is the software workflow synoptic diagram of detector node.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the present invention will be further described.
As shown in Figure 1, this monitoring system is made up of probe node, wireless communication networks workstation and three-dimensional monitoring platform.Probe node is arranged on each regional specific location of nuclear power plant, is used to gather and send the radiation dose that is detected; Probe node is mutual by carrying out between realization of wireless communication networks workstation and three-dimensional monitoring platform; Three-dimensional monitoring platform carries out analyzing and processing and Real time dynamic display to the measured data of probe node.
The structural representation that probe node of the present invention is formed, as shown in Figure 2, probe node is made up of signal acquisition module, signal processing module, accumulator and radio receiving transmitting module, signal acquisition module, signal processing module and radio receiving transmitting module series connection, accumulator links to each other with signal acquisition module, signal processing module radio receiving transmitting module respectively; Signal acquisition module is connected to form by detector and signal processing circuit unit, and signal processing module is connected to form by processor and reservoir, and radio receiving transmitting module is connected to form by wireless sensing chip and transceiver.Used probe node is small-sized probe node, can work in specific nuclear power plant's environment, and possess wide, the high characteristics of the high detection efficiency of energy resolution of the dynamic range of measurement.The radiation information that detected earlier by the signal processing circuit unit of signal acquisition module sample in advance, baseline recovers, undesired signal shielding, the signal of formulating feature are differentiated and digital signal processing work, guarantee that readout equipment can be real-time at the scene return to after the analyzing and processing of operating space the result and to the directviewing description of situation.Information after the processing send information to three-dimensional monitoring platform by radio receiving transmitting module, and radio receiving transmitting module also possesses self-locating function.
In described based on wireless mesh network, all probe nodes can pass through the mode building network of multi-hop, self-organization.If the information transmission route of arbitrary probe node lost efficacy or network disconnects, so Lin Jin a certain detection or routing node can be born the task that data transmit.As shown in Figure 3, when the A probe node broke down, the detection information of B node can select an other paths to transmit automatically.
As shown in Figure 4, three-dimensional monitoring platform comprises ground, digitizing space module, data acquisition and processing module and three-dimensional display screen group.Wherein, establish each regional three-dimensional map model of nuclear power station in ground, the space module; After probe node sends, obtain the high-precision three-dimensional field through processing module by the numerical evaluation Model Calculation earlier, and with the data storing that calculates in database, the 3-D display module regularly shows radiation field information in the database intuitively in ground, space module, and distinguishes the size of parameter value by different colours; The processing module of data acquisition and processing module is used for setting alert threshold value, when the data of gathering surpass setting threshold, send the three-dimensional display screen group to show early warning warning information.
As shown in Figure 5, the software workflow of probe node is: step 1: probe node carries out initialization; Step 2: probe node transmission request adds network signal, and judges whether the adding network is successful; Step 3: if add network failure, then continue to send request and add network signal, if add the network success, probe node enters the dormant state of low-power consumption; Step 4: probe node enters the dormant state of low-power consumption, waits for receiving the specific timing look-at-me; Step 5: after probe node received the specific timing look-at-me, probe node withdrawed from dormant state, judged and received whether the specific timing look-at-me is the image data trigger pip; Step 6: if when the specific timing look-at-me received is not the image data trigger pip, return step 4, if during the image data trigger pip, the information acquisition module of probe node carries out initialization; Step 7: after the information acquisition module of probe node carried out initialization, the information acquisition module of probe node carried out data acquisition, and the data that collect send to three-dimensional monitoring platform by radio receiving transmitting module after handling through signal processing module; Step 8: probe node detects data and sends whether success, and after detecting data and sending successfully, probe node enters the dormant state of low-power consumption once more, when detect data send fail after, probe node will continue the transmission data.
The installation site of probe node requires as follows:
(1) probe node should all be installed in air or the fluid, avoids and the contacting of wall or pipeline, and the search coverage of detector should not stopped, and is representative to guarantee the radioactivity data;
(2) in the same area, the three dimensional field investigative range that obtains by calculated with mathematical model, place the investigative range with other probe nodes on every side to have the position of occuring simultaneously single probe node, be used for avoiding the disappearance of a certain area data that the inefficacy of a certain probe node causes;
(3) according to different monitoring targets, the probe node installation site is as follows:
1. in space environment zones such as radioactive waste factory building, fuel storage factory buildings, probe node intersects equably and is installed on the room wall, guaranteeing the integrality of search coverage, and keeps big distance each other; The ventilating opening place must be equipped with probe node;
2. for the monitoring of liquid or gaseous radioactivity, probe node evenly is installed on pipeline lower wall place with direction of flow, has deposition because radiomaterials such as dust flow with fluid, and the pipeline downside is the radiation dose maximum;
3. be in the containment at the shielding factory building, in the designed probe node parts such as detector and signal conditioning circuit be installed on the factory building inside and outside wall respectively, avoid the high radiological dose of generation under the accident conditions that circuit is exerted an influence;
(4) for the Radiation monitoring of nuclear power plant's environment, probe node can rely on buildings or fixed pivot to install, and probe node is mainly used in the discontinuous monitoring of environment, carries out the data acquisition of not timing according to monitoring requirements;
(5) under accident conditions, particularly under earthquake etc. may cause accident that probe node damages, can exist at containment etc. and layout arbitrarily in the highly radioactive factory building, utilize the MANET characteristic of fully connected topology, in time the radiation information with the scene of the accident is sent to the monitoring hall, has been used for reducing operating personnel's work on the spot amount.
Claims (6)
1. the three-dimensional monitoring system of the radiation field of a nuclear power station based on wireless mesh network is characterized in that this monitoring system comprises probe node, wireless communication networks workstation and the three-dimensional monitoring platform of setting number, wherein,
The probe node of described setting number links to each other with three-dimensional monitoring platform successively with the wireless communication networks workstation;
Described probe node is arranged on each regional specific location of nuclear power plant, is used to gather and send the radiation dose that is detected;
Described wireless communication networks workstation is used for the reception and the transmission of network data;
Three-dimensional monitoring platform carries out exchanges data by wireless communication networks and detector, and the data that probe node is measured are carried out analyzing and processing and shown in real time;
Described probe node is made up of signal acquisition module, signal processing module, accumulator and radio receiving transmitting module, described signal acquisition module, signal processing module and radio receiving transmitting module link to each other successively, and described accumulator links to each other with the signal processing module radio receiving transmitting module with signal acquisition module respectively;
Described signal acquisition module is connected to form by detector and signal processing circuit unit;
Described signal processing module is connected to form by processor and reservoir;
Described radio receiving transmitting module is connected to form by wireless sensing chip and transceiver;
Described three-dimensional monitoring platform comprises ground, digitizing space module, data acquisition and processing module and three-dimensional display screen composition, and described data acquisition and processing module link to each other with the three-dimensional display screen group with ground, digitizing space module respectively;
Described data acquisition and processing module are made up of processing module, database, data acquisition module, and wherein, described processing module, database and data acquisition module link to each other successively.
2. the three-dimensional monitoring system of the radiation field of a kind of nuclear power station based on wireless mesh network according to claim 1 is characterized in that described probe node adopts the material of anti-high radiation.
3. the three-dimensional monitoring system of the radiation field of a kind of nuclear power station based on wireless mesh network according to claim 1 and 2 is characterized in that the probe node of described setting number adopts the mode of multi-hop and self-organization to form wireless network.
4. the three-dimensional monitoring system of the radiation field of a kind of nuclear power station based on wireless mesh network according to claim 1, it is characterized in that, the processing module of described data acquisition and processing module is used for setting alert threshold value, when the data of gathering surpass setting threshold, send the three-dimensional display screen group to show early warning warning information.
5. the three-dimensional monitoring system of the radiation field of a kind of nuclear power station based on wireless mesh network according to claim 1 is characterized in that in the transceiver of the radio receiving transmitting module of described probe node clock is installed, described clock and local clock are synchronous automatically.
6. use the detection method of the system as claimed in claim 1, it is characterized in that this method comprises the steps:
Step 1: probe node carries out initialization;
Step 2: probe node transmission request adds network signal, and judges whether the adding network is successful;
Step 3: if add network failure, then continue to send request and add network signal, if add the network success, probe node enters the dormant state of low-power consumption;
Step 4: probe node enters the dormant state of low-power consumption, waits for receiving the specific timing look-at-me;
Step 5: after probe node received the specific timing look-at-me, probe node withdrawed from dormant state, judged and received whether the specific timing look-at-me is the image data trigger pip;
Step 6: if when the specific timing look-at-me received is not the image data trigger pip, return step 4, if during the image data trigger pip, the information acquisition module of probe node carries out initialization;
Step 7: after the information acquisition module of probe node carried out initialization, the information acquisition module of probe node carried out data acquisition, and the data that collect send to three-dimensional monitoring platform by radio receiving transmitting module after handling through signal processing module;
Step 8: probe node detects data and sends whether success, and after detecting data and sending successfully, probe node enters the dormant state of low-power consumption once more, when detect data send fail after, probe node will continue the transmission data.
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| CN106371125A (en) * | 2016-08-17 | 2017-02-01 | 中国核电工程有限公司 | PLC based radiation monitoring system and monitoring method |
| CN106443748A (en) * | 2016-08-19 | 2017-02-22 | 黑龙江省科学院技术物理研究所 | High-precision wireless radiation dosage monitoring device and method |
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| CN111026163A (en) * | 2019-12-20 | 2020-04-17 | 华南理工大学 | Indoor-oriented uncontrolled radioactive source autonomous searching robot and searching method thereof |
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| CN111026163A (en) * | 2019-12-20 | 2020-04-17 | 华南理工大学 | Indoor-oriented uncontrolled radioactive source autonomous searching robot and searching method thereof |
| CN117270015A (en) * | 2023-11-23 | 2023-12-22 | 中国科学技术大学 | Environmental neutron gamma radiation monitoring system and environmental neutron gamma radiation monitoring method |
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