CN101309396A - Emergency cooperative monitoring system for dangerous chemical leakage accident and method thereof - Google Patents
Emergency cooperative monitoring system for dangerous chemical leakage accident and method thereof Download PDFInfo
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- CN101309396A CN101309396A CNA2008101156967A CN200810115696A CN101309396A CN 101309396 A CN101309396 A CN 101309396A CN A2008101156967 A CNA2008101156967 A CN A2008101156967A CN 200810115696 A CN200810115696 A CN 200810115696A CN 101309396 A CN101309396 A CN 101309396A
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Abstract
The invention relates to an emergency interlocking monitoring system and a method thereof for a dangerous chemicals leakage accident, which belong to the technical field of the dangerous chemicals accident emergency rescue. The emergency interlocking monitoring system comprises an explosion-proof wireless gas concentration monitoring subsystem and an explosion-proof individual wireless video transmission subsystem arranged around the site where the leakage accident occurs; an emergency command host computer arranged at a site emergency command center, a video server and a wireless receiving module. The method mainly comprises the steps that wind direction, speed, concentration of leaked gas and video pictures on the site of each monitoring point are collected in real time, and the emergency command host computer receives and displays information, and provides site emergency treatment measures; the accident casualty radius is calculated according to aftermath, and the evacuation region of the people is determined; emergency rescue force and rescue facilities around the accident site are displayed on a GIS system, and the optimum evacuation path for the people is searched and displayed on an electronic map. The emergency interlocking monitoring system and the method can reduce the accident damage, and better guarantee the life safety and the property security of the people.
Description
Technical field
The invention belongs to hazardous chemical accident emergency rescue technical field, be particularly related to a kind of be used to the obtain on-the-spot wind direction of dangerous chemical leakage accident, wind speed, gas leakage concentration, GPS information and video information, and the accident sight is carried out analysis-by-synthesis and consequence is calculated according to these information and on-the-spot peripheral GIS information, determine the evacuating personnel scope and evacuate the path, thereby the method for decision-making assistant information is provided for the accident emergency rescue.
Technical background
Along with the development of petro chemical industry, inflammable and explosive and kind and range of application toxic gas have all obtained increase.In a single day these gases leak in production, transportation, use, will cause poisoning, fire even explosion accident, the serious harm people's safety of life and property.Because the diffusivity that gas itself exists, after leaking, externally under the effect of wind-force and inner concentration gradient, gas can spread along ground surface, forms combustion explosion or poisons the hazardous area at scene of the accident periphery, enlarges hazard area.After gas leakage accidents took place, accident handling will be around on-the-spot wind direction, wind speed and gas leakage concentration monitor, determine warning region, organize that the masses withdraw in the deathtrap, rescue aspects expansion such as poisoning personnel, leak stopping, decontamination.Therefore, the first step of carrying out emergency management and rescue should be to dispose portable emergency environmental monitoring and video monitoring equipment rapidly at the scene, set up interim command centre in the safety zone and collect the wind direction and wind velocity of on-the-spot a plurality of monitoring points, gas leakage concentration and live video image, utilize leakage accident aid decision software that these information are carried out analysis-by-synthesis and damage sequence calculating, determine the evacuating personnel scope and evacuate the path, for the accident emergency rescue provides decision support.
Because diversity inflammable and explosive, toxic gas requires the emergency environmental monitoring equipment to detect fuel gas and common toxic gas.If flammable explosive gas leaks, also require to be arranged in on-the-spot monitoring equipment and satisfy requirement of explosion proof.The at present existing portable emergency enviromental monitoring equipment that is used for scene of the accident wind direction and wind velocity and gas concentration monitoring, can only detect pure gas mostly, the compound detection equipment that is used for on-the-spot wind direction and wind velocity of dangerous chemical leakage accident and the monitoring of common concentration of toxic gases is in space state substantially, and does not all meet on-the-spot requirement of explosion proof.And existing emergent video transmission equipment, though technical all comparative maturities are not mostly considered the requirement of explosion proof at leakage accident scene.Therefore, existing portable emergency monitoring equipment all is not suitable for emergency management and rescue occasion inflammable, the explosion hazard gases leakage accident.In addition, dangerous chemical leakage accident field data is carried out comprehensive analysis processing and accident impact range computation, determines that the aid decision-making system in evacuating personnel scope and evacuation path also is in space state at home.
Summary of the invention
The objective of the invention is for overcoming the weak point of prior art, the aid decision command system and the method thereof of the on-the-spot emergency management and rescue of a kind of dangerous chemical leakage accident are proposed, wind direction and wind velocity to dangerous chemical leakage accident, gas concentration, GPS information and live video are monitored in real time, and the accident sight is carried out analysis-by-synthesis and damage sequence calculates according to these information and on-the-spot peripheral GIS information, determine the evacuating personnel scope and evacuate the path, for the accident emergency rescue provides the aid decision support, thereby improve emergency management and rescue commander's efficient greatly, reduce causality loss.
A kind of emergency cooperative monitoring system for dangerous chemical leakage accident that the present invention proposes, it is characterized in that, this system comprises: by a plurality of explosion-proof type individual soldier's wireless video transmitting apparatus, realize explosion-proof type individual soldier's wireless video transmission subsystem that a plurality of explosion-proof type individual soldier's radio video reception devices of radio communication are formed with this transmitting apparatus, by the wireless gas detecting instrument of a plurality of explosion-proof types, realize the explosion-proof type wireless gas concentration monitoring subsystem that the wireless receiving module of radio communication is formed with each detector, and emergency command main frame, video server; Wherein, a plurality of explosion-proof type individual soldier's wireless video transmitting apparatus and the wireless gas detecting instrument of a plurality of explosion-proof type are arranged at the on-the-spot periphery of leakage accident; These a plurality of explosion-proof type individual soldier's radio video reception devices, wireless receiving module, emergency command main frame, video server are arranged at on-the-spot Police Command Center; These a plurality of explosion-proof type individual soldier's radio video reception devices link to each other with video server, and this emergency command main frame links to each other with wireless receiving module, video server respectively.
The present invention proposes to adopt the dangerous chemical leakage accident emergency cooperative method for supervising of said system, and it is characterized in that: this method may further comprise the steps:
1) gather the on-the-spot wind direction of dangerous chemical leakage accident, wind speed, gas leakage concentration and live video image in real time:
Wind direction and wind velocity, gas concentration and the GPS locating information of explosion-proof type is wireless each monitoring point of gas detecting instrument collection site, explosion-proof type individual soldier's wireless video transmitting apparatus collection site video information sends the emergency command main frame of on-the-spot Police Command Center respectively to by wireless mode;
2) field data is received, stores, handles and shows:
The emergency command main frame receives on-the-spot wind direction, wind speed, gas leakage concentration, GPS locating information, and deposits real-time data base in;
Emergency command host computer using configuration software shows and computational analysis wind direction, wind speed, the gas leakage concentration of each monitoring point, determine on-the-spot mean wind direction wind speed and spillage risk chemical name, by inquiry hazardous chemical MSDS database, draw on-the-spot emergency disposal measures such as the decontamination of spillage risk chemicals and leak stopping;
The emergency command main frame shows scene of the accident mean wind direction wind speed information, gas concentration information configuration picture respectively, leaks chemicals MSDS information and emergency disposal measure and live video monitored picture on 4 secondary display screens, operation and demonstration generalized information system picture on main display.
3) according to wind direction, wind speed, gas leakage concentration and the GPS information of each monitoring point, utilize trained three layers of MLP neural net based on the BP algorithm, inverse goes out source of leaks intensity;
4) based on the classical diffusion model of the position of monitoring sensor, instantaneous meteorological condition, source of leaks intensity and Gauss, calculate and simulate time dependent gaseous diffusion concentration field; According to spillage risk chemicals character, definite accident pattern that may cause according to gaseous diffusion concentration field and gas leakage damage sequence model, calculates the accident casualty radius in real time, and on the GIS map, demonstrate the accident harm coverage, thereby determine the evacuating personnel scope;
5) according to the GPS positional information of the wireless gas detecting instrument of on-the-spot explosion-proof type, on the GIS map, demonstrate the emergency management and rescue strength and the emergency management and rescue facility of accident periphery, in conjunction with scene of the accident periphery GIS information, search for and demonstrate the evacuating personnel path into the best on electronic chart, commander provides decision-making foundation for emergency management and rescue.
Characteristics of the present invention and effect:
The objective of the invention is the problem that exists in the present dangerous chemical leakage accident emergency management and rescue process for solving, propose a kind of emergency cooperative monitoring system for dangerous chemical leakage accident and method thereof, realize the real-time monitoring of the on-the-spot wind direction and wind velocity of dangerous chemical leakage accident, gas leakage concentration, GPS information and live video image; According to gas leakage concentration, wind direction and wind velocity, the positional information of each monitoring point and the senior inverse model of leakage source strength of the scene of the accident, determine the intensity of source of leaks; Intensity according to spillage risk chemicals character and source of leaks, carrying out damage sequence calculates, on the GIS map, demonstrate the emergency management and rescue strength and the emergency management and rescue facility of accident harm coverage and scene of the accident periphery, for the warning of the delimitation accident of science and evacuating personnel scope provide the aid decision support; In conjunction with scene of the accident periphery GIS information, on electronic chart, search for and demonstrate evacuating personnel path into the best, efficient and the control causality loss that improves the accident emergency rescue command had important effect.
Description of drawings
Fig. 1 is a system architecture diagram of the present invention.
Fig. 2 is the general structure block diagram of the wireless gas detecting instrument of explosion-proof type.
Fig. 3 is the circuit diagram of the embodiment of the wireless gas detecting instrument of explosion-proof type; Wherein,
(a) be 5V power-switching circuit figure;
(b) be 3.3V power-switching circuit figure;
(c) be the SCM peripheral circuit diagram;
(d) six kinds of gas sensor signal change-over circuits.
Fig. 4 is the workflow diagram of the embodiment of the wireless gas detecting instrument of explosion-proof type.
Fig. 5 is an emergency command main frame outside drawing, wherein,
(a) be four secondary display screens emergency command main frame outside drawings when packing up.
(b) be four secondary display screens emergency command main frame outside drawings when launching.
Fig. 6 is a workflow of the present invention.
Embodiment
Emergency cooperative monitoring system for dangerous chemical leakage accident that the present invention proposes and method thereof reach embodiment in conjunction with the accompanying drawings and are described in detail as follows:
Emergency cooperative monitoring system for dangerous chemical leakage accident of the present invention, general structure is as shown in Figure 1: this system comprises: by a plurality of explosion-proof type individual soldier's wireless video transmitting apparatus, realize explosion-proof type individual soldier's wireless video transmission subsystem that a plurality of explosion-proof type individual soldier's radio video reception devices of radio communication are formed with this transmitting apparatus, by the wireless gas detecting instrument of a plurality of explosion-proof types (maximum 16), realize the explosion-proof type wireless gas concentration monitoring subsystem that the wireless receiving module of radio communication is formed with each detector, and emergency command main frame, video server; Wherein, a plurality of explosion-proof type individual soldier's wireless video transmitting apparatus and the wireless gas detecting instrument of a plurality of explosion-proof type are arranged at the on-the-spot periphery of leakage accident; These a plurality of explosion-proof type individual soldier's radio video reception devices, wireless receiving module, emergency command main frame, video server are arranged at on-the-spot Police Command Center; These a plurality of explosion-proof type individual soldier's radio video reception devices link to each other with video server, and this emergency command main frame links to each other with wireless receiving module, video server respectively.
Wind direction and wind velocity, gas concentration and the GPS locating information of each monitoring point of the wireless gas detecting instrument collection site of explosion-proof type of native system explosion-proof type wireless gas concentration monitoring subsystem, utilize accurate time service information that its GPS module obtains base when sending, according to data transmitting period and self ID number definite information sending time slots, Information Monitoring is sent to on-the-spot Police Command Center by wireless receiving module, and it is synchronous to realize that each detector information sends.
Explosion-proof type individual soldier's wireless video transmitting apparatus of explosion-proof type individual soldier's wireless video transmission subsystem adopts the COFDM modulation technique that image is encoded, and each group explosion-proof type individual soldier's wireless video transmitting apparatus and individual soldier's radio video reception device are finished collection, transmission and the reception of one road image scene; Explosion-proof type individual soldier's wireless video transmission subsystem sends live video to by the wireless video collecting device at scene the radio video reception device of Police Command Center.
This system each several part apparatus embodiments is respectively described below:
Each explosion-proof type is wireless, and gas detecting instrument is formed structure as shown in Figure 2, mainly by wind direction and wind velocity sensor, 6 kinds of gas concentration sensors (LEL, NH
3, CL
2, H
2S, HCL, SO
2) and amplifying circuit, peripheral circuits such as single-chip microcomputer and clock circuit, the GPS module, wireless sending module, ID is provided with switch, power supply and power-switching circuit, transmitting antenna and gps antenna constitute, its annexation is: described 6 kinds of gas sensor outputs link to each other with its input amplifier, each amplification circuit output end is connected with the AD translation interface of described single-chip microcomputer, the wind speed of described wind speed wind direction sensor, the wind direction output port is connected with the PC mouth with the PB of single-chip microcomputer respectively, described GPS module, wireless sending module and power-switching circuit all link to each other with single-chip microcomputer, and described power supply links to each other with power-switching circuit; Described SCM peripheral circuit comprises: wind speed testing circuit, wind direction testing circuit, GPS modular circuit, ID are provided with circuit, single-chip microcomputer crystal oscillating circuit, AD conversion reference voltage circuit, wherein, the wind speed testing circuit links to each other with described air velocity transducer, the wind direction testing circuit links to each other with described wind transducer, the GPS modular circuit links to each other with the GPS module, and ID is provided with circuit and with ID switch is set and links to each other.
Described power supply adopts the 12V battery, and described power-switching circuit links to each other with power output end and converts 5V and 3.3V power supply to; Described single-chip microcomputer and clock circuit thereof link to each other with the 5V power supply, and described GPS module links to each other with the 3.3V power supply, and described wireless sending module, transducer and amplifying circuit thereof link to each other with 12V.
Wind direction and wind velocity, gas concentration and the GPS locating information of explosion-proof type is wireless each monitoring point of gas detecting instrument collection site, utilize accurate time service information that its GPS module obtains base when sending, according to data transmitting period and self ID number definite information sending time slots, Information Monitoring is sent to on-the-spot Police Command Center, and it is synchronous to realize that each detector information sends.
Except that gas sensor, transmitting antenna, gps antenna, miscellaneous part all places the flame proof body in the present embodiment, and gas sensor, transmitting antenna, gps antenna are connected with flame proof body internal circuit by explosion-proof interface, and the design explosive-proof grade is ExdIIBT4.Each parts embodiment is as follows:
Power supply: adopt Shenzhen's prestige intelligence to reach the 12V of Electro-optical Technology, INC. (US) 62 Martin Road, Concord, Massachusetts 017 nickel-hydrogen chargeable cell, important technological parameters: voltage, 12V; Capacity, 10000mAh; Volume, 2.5 " Hx2.5 " Wx6.3 " L; Weight, 3.5Lb; Wireless sending module, transducer and amplifying circuit thereof adopt the 12V power supply;
The power-switching circuit of present embodiment is made up of 3.3V power-switching circuit and 5V power-switching circuit, wherein the 5V power-switching circuit is shown in Fig. 3 (a), adopt 7805 chips, and the 12V power supply voltage stabilizing that links to each other with the input of this 7805 chip, filter circuit unit link to each other with output with this 7805 chip+5V signal filter circuit unit, this 7805 chip becomes 5V voltage with general supply 12V voltage transitions, is the single-chip microcomputer power supply; This power supply voltage stabilizing, filter circuit unit are made up of diode D1, fuse D2, inductance L 1 and the electric capacity (C1, C2 and C3) that link to each other successively, the 12V signal is carried out giving 7805 chips after voltage stabilizing, the filtering change; Should+5V signal filter circuit unit is made up of the electric capacity (C4, C5), resistance R 2, LED (D3), inductance L 2 and the electric capacity (C6, C7) that link to each other successively, to 7805 chips export+the 5V signal carries out filtering; Single-chip microcomputer and clock circuit thereof adopt the power supply of 5V power supply;
3.3V power-switching circuit shown in Fig. 3 (b), adopts 3002 chips and the capacitor C 41 that links to each other with its output, C42 to form; This change-over circuit becomes 3.3V voltage with the 5V voltage transitions, is the GPS module for power supply; Wherein, 3002 chips will import+and the 5V conversion of signals becomes the 3.3V signal, and the circuit that the capacitor C 41 of its output OUT, C42 form carries out filtering to the 3.3V signal of 3002 chips output; The GPS module adopts the power supply of 3.3V power supply;
Wind direction and wind velocity sensor: present embodiment adopts EC-9X (S) wind speed wind direction sensor of Jinzhou, Liaoning sunlight, important technological parameters: operating voltage, DC12V; Start wind speed ,≤0.4m/s; The wind speed output signal type, pulse (frequency) signal; The wind speed accuracy, ± (0.3+0.03V) m/s; The measuring wind speed scope, 0～70m/s; The wind direction measuring range, 0～360 °; The wind direction certainty of measurement, ± 3 °; The wind direction output signal type, seven Gray codes;
Six kinds of gas sensors (LEL, NH of present embodiment
3, CL
2, H
2S, HCL, SO
2): adopt the membrapor electrochemical gas sensor of the Fu Anda of Shenzhen intelligence Science and Technology Ltd., transducer all adopts two-wire system, and 12V direct current supply connects; The transducer important technological parameters is as follows:
LEL transducer: 0-100%LEL; The LEL certainty of measurement, ± 1%;
NH
3Transducer: measuring range, 0～1000ppm; Maximum load, 2000ppm; Working life, in the air 2 years; Output signal: 25 ± 8nA/ppm; Resolution: 4ppm;
CL2, transducer: measuring range: 0～20ppm; Maximum load: 200ppm; Working life, in the air 2 years; Output signal ,-1000 ± 250nA/ppm; Resolution, 0.1ppm;
H
2S transducer: measuring range, 0-200ppm; Peak load, 500ppm; Working life, in the air 2 years; Output, 370 ± 80nA/ppm; Resolution, 0.25ppm;
HCL transducer: measuring range, 0～20ppm; Working life, in the air 2 years; Output signal, 450 ± 150nA/ppm; Resolution: 0.2ppm;
SO
2Transducer: measuring range, 0～100ppm; Maximum load, 500ppm; Working life, in the air 2 years; Output signal, 370 ± 70nA/ppm; Resolution: 0.5ppm;
The gas sensor signal change-over circuit of present embodiment converts the non-standard signal that above-mentioned 6 kinds of gas concentration sensors produce to 0～5V standard signal, and output signal is connected with the Chip Microcomputer A mouth, shown in Fig. 3 (d), is respectively described below:
The LEL signaling conversion circuit: be made of electric capacity (C12, C13), resistance (R4, R5) and 12V power supply, wherein the anode of LEL transducer is connected the other end ground connection of electric capacity (C12) with an end of 12V power supply and electric capacity (C12); The negative terminal of LEL transducer is connected with an end of electric capacity (C13), resistance (R4), the other end ground connection of electric capacity (C13), and the other end of resistance (R4) is connected with an end of the AD0 mouth of single-chip microcomputer and resistance (R5), resistance (R5) other end ground connection;
NH
3Signaling conversion circuit: constitute by electric capacity (C14, C15), resistance (R6, R7) and 12V power supply, wherein NH
3The anode of transducer is connected the other end ground connection of electric capacity (C14) with an end of 12V power supply and electric capacity (C14); NH
3The negative terminal of transducer is connected with an end of electric capacity (C15), resistance (R6), the other end ground connection of electric capacity (C15), and the other end of resistance (R6) is connected with an end of the AD1 mouth of single-chip microcomputer and resistance (R7), resistance (R7) other end ground connection;
CL
2Signaling conversion circuit: constitute by electric capacity (C16, C17), resistance (R8, R9) and 12V power supply, wherein CL
2The anode of transducer is connected the other end ground connection of electric capacity (C16) with an end of 12V power supply and electric capacity (C16); CL
2The negative terminal of transducer is connected with an end of electric capacity (C17), resistance (R8), the other end ground connection of electric capacity (C17), and the other end of resistance (R8) is connected with an end of the AD2 mouth of single-chip microcomputer and resistance (R9), resistance (R9) other end ground connection;
H
2S signaling conversion circuit: constitute by electric capacity (C18, C19), resistance (R10, R11) and 12V power supply, wherein H
2The anode of S transducer is connected the other end ground connection of electric capacity (C18) with an end of 12V power supply and electric capacity (C18); H
2The negative terminal of S transducer is connected with an end of electric capacity (C19), resistance (R10), the other end ground connection of electric capacity (C19), and the other end of resistance (R10) is connected with an end of the AD3 mouth of single-chip microcomputer and resistance (R11), resistance (R11) other end ground connection;
The HCL signaling conversion circuit: be made of electric capacity (C20, C21), resistance (R12, R13) and 12V power supply, wherein the anode of HCL transducer is connected the other end ground connection of electric capacity (C20) with an end of 12V power supply and electric capacity (C20); The negative terminal of HCL transducer is connected with an end of electric capacity (C21), resistance (R12), the other end ground connection of electric capacity (C21), and the other end of resistance (R12) is connected with an end of the AD4 mouth of single-chip microcomputer and resistance (R13), resistance (R13) other end ground connection;
SO
2Signaling conversion circuit: constitute by electric capacity (C22, C23), resistance (R14, R15) and 12V power supply, wherein SO
2The anode of transducer is connected the other end ground connection of electric capacity (C22) with an end of 12V power supply and electric capacity (C22); SO
2The negative terminal of transducer is connected with an end of electric capacity (C23), resistance (R14), the other end ground connection of electric capacity (C23), and the other end of resistance (R14) is connected with an end of the AD5 mouth of single-chip microcomputer and resistance (R15), resistance (R15) other end ground connection;
The GPS module: present embodiment adopts SkyNav GM25, important technological parameters: frequency, L1,1575.42MHz; The C/A sign indicating number, 1.023MHz; Passage, 12Channels; Tracking sensitivity ,-160dBm; Acquisition sensitivity ,-148dBm; Accurate positioning, 10m@2DRMS; The Refresh Data rate, 1Hz;
Wireless sending module: present embodiment adopts the HAC-HN digital transmission module of Shenzhen HAC Telecom Technology Co., Ltd., important technological parameters: operating voltage, 12V; Baud rate, 1200/2400/4800/9600/19200/38400bps is optional; Frequency range, 433MHz; The sighting distance distance, 6000m@2400bps, 3000m@19200bps; Power output, 37dBm (5w); Frequency stability, ± 2.5PPM; Network topology, point-to-point, point-to-multipoint;
ID is provided with switch: present embodiment adopts Cixi City 4 DIP switch WT11-SMT-04 of Electronics Co., Ltd. of Netcom, and it is 0～15 that the ID scope can be set, important technological parameters: operating physical force, maximum 1000g; Push button stroke: 2.0mm; Appliance life, each switch is tested under voltage 24VDC and electric current 25mA, can fiddle with 2000 times.
The annexation of single-chip microcomputer of the present invention and SCM peripheral circuit and each parts is respectively described below shown in Fig. 3 (c):
Single-chip microcomputer: be core devices of the present invention, under its control, finish data sampling, coding and transmission etc., present embodiment adopts the AVR ATmega16 single-chip microcomputer of Atmel company, important technological parameters: operating voltage, 2.7-5.5V; Data throughput, 1MIPS/MHz; In-System Programmable Flash, the 16K byte; EEPROM, 512 bytes; Erasing and writing life, 100000 times; On-chip SRAM, the 1K byte; Two 8 bit timing device/counters with independent pre-divider and comparator function; 16 bit timing device/counters with pre-divider, comparing function and capture function; 8 tunnel 10 ADC; Two programmable serial USART; 6 kinds of sleep patterns, the Standby pattern of idle pulley, ADC noise suppressed pattern, battery saving mode, power-down mode, Standby pattern and expansion;
Wind speed testing circuit: form by inductance L 6, electric capacity (C31, C32, C50), resistance R 20 and J11 interface, wherein, one end of inductance L 6 links to each other with the 5V power supply, and an end of the other end and electric capacity (C31, C32) is with being connected on the node 2 of J11 interface the other end ground connection of capacitor C 31; The other end of capacitor C 32 is connected on the node 1 of J11 interface, and capacitor C 50 1 ends are connected by resistance R 20 on the node 3 of J11 interface, the other end ground connection of capacitor C 50; The wind speed testing circuit is connected with wind speed wind direction sensor by the J11 interface, and is connected with the PB1 port with single-chip microcomputer PB0;
The wind direction testing circuit: ((C28, C29, C33～C40), inductance (L5) and J10 interface are formed for R21～R28), electric capacity by resistance, wherein, ((end of C33～C40) links to each other with 19～26 ports of single-chip microcomputer respectively each resistance for the end of R21～R28) and each electric capacity, (R21～other end R28) links to each other with 1～8 node of J10 interface each resistance, each electric capacity (other end ground connection of C33～C40); One end of electric capacity (C28, C29) and inductance (L5) all links to each other with 1 node of J10 interface, and the other end of electric capacity (C28, C29) links to each other with 9 ground connection nodes of J10 interface, another termination+5V power supply of inductance (L5).Wind speed wind direction sensor is connected with the wind speed testing circuit by the J10 interface;
The single-chip microcomputer crystal oscillating circuit: (X1 7.3728MHz) constitutes with the electric capacity (C8, C9) that is connected in its two ends respectively, is connected with single-chip microcomputer with mistake XTAL2 port by XTAL1, for single-chip microcomputer provides oscillator signal by crystal oscillator;
AD conversion reference voltage circuit: be made of electric capacity (C10, C11) and inductance (L3, L4), be connected with AREF, GND, the AVCC port of single-chip microcomputer respectively, this circuit provides the AD conversion required reference voltage signal;
The wireless transmitter module interface: wireless transmitter module is connected with single-chip microcomputer PD2 port by J12 interface (DB9 type serial ports), and single-chip microcomputer passes information to be sent toward wireless sending module by the PD2 port;
ISP online programming interface: J16 is the online programming interface, and this interface is connected with the PB5～PB7 and the RESET port of single-chip microcomputer, realizes the download and the on-line debugging of Single Chip Microcomputer (SCM) program;
The GPS modular circuit of present embodiment: constitute by resistance (R29, R30) and interface (J13), 4,5 nodes of this interface link to each other with the 3.3V power supply, 1 node is connected with single-chip microcomputer with the PD1 port with the PD0 of single-chip microcomputer by resistance (R29), resistance (R30) end ground connection, the other end links to each other with 1 node; The GPS module links to each other with single-chip microcomputer by interface, and this circuit provides GPS framing signal for single-chip microcomputer;
The ID of present embodiment is provided with circuit: resistance (R33～R36) constitute, wherein, (end of R33～R36) is provided with switch with four ID and links to each other each resistance, and the other end links to each other with the PD2～PD5 port of single-chip microcomputer, can ID number of detector be provided with by this circuit;
The workflow of single-chip microcomputer may further comprise the steps as shown in Figure 4 in the present embodiment:
(a) single-chip microcomputer powers on, each initialization of variable of GPS module, Flash, SRAM, EEPROM and memory (information is counted n=0);
(b) wait for GPS module location;
(c) judge whether gps signal is effective,, then change (d),, then change (c) if gps signal is invalid if gps signal is effective;
(d) read gps data, transition latitudinal, longitude, height above sea level and time information; Correction time parameter, synchronization timing.
(e) read wind speed, wind direction, gas concentration information; Information is encoded;
(f) calculate the emission zero-time, regularly wait for; If timing arrives, then change (g);
(g) transmission information, message count n=n+1; If n＞256, then n=0 changes (3); If then change (e) n＜256.
The wireless receiving module of present embodiment adopts the HAC-HN digital transmission module of Shenzhen HAC Telecom Technology Co., Ltd., important technological parameters: power supply, 12V; Baud rate, 1200/2400/4800/9600/19200/38400bps is optional; The sighting distance distance, 6000m@2400bps, 3000m@19200bps; Power output, 37dBm (5w); Frequency stability, ± 2.5PPM; Network topology, point-to-point, point-to-multipoint.Wireless receiving module receives the various information from the wireless gas detecting instrument of explosion-proof type, and passes to the emergency command main frame.
Explosion-proof type individual soldier's wireless video transmitting apparatus of present embodiment and individual soldier's radio video reception device, adopt individual soldier's Video transmission system of Shenzhen Keweitai Industrial Development Co., Ltd., form by the explosion-proof transmitter and receiver of individual soldier, explosion-proof type individual soldier's wireless video transmitting apparatus adopts the COFDM modulation technique that image is encoded, and each group explosion-proof type individual soldier's wireless video transmitting apparatus and individual soldier's radio video reception device are finished collection, transmission and the reception of one road image scene; Explosion-proof type individual soldier's wireless video transmission subsystem sends live video to by the wireless video collecting device at scene the radio video reception device of Police Command Center.Their the key technical indexes is as follows:
The explosion-proof transmitter of the individual soldier of present embodiment:
Modulation system, COFDM; Working frequency range, 340MHz; Image compression format, MPEG2; Channel width, 8MHz; 20-50 kilometer under the transmission range intervisibility situation, 1-10 kilometer (deciding) under the non-intervisibility state in city on environment; Weight of equipment, the individual soldier carries on the back totally 2.5 kilograms on frame and battery (double copies); Explosion proof ratings, ExdIIBT4; Power supply, DC12V.The explosion-proof transmitter of individual soldier is realized the wireless transmission of image scene.
Receiver:
Video output, two-way (PAL/NTSC); Working frequency range, 340MHz; Image compression format, MPEG2; Channel width, 8MHz; Video rate, 25 frames/S; Receiving sensitivity ,-94dBm; Resolution, 720 * 576; Communication interface, the RJ45 interface.Receiver receives from the vision signal of the explosion-proof transmitter of individual soldier and passes to video server.
The video server of present embodiment adopts 8 road video server BJ-MP408 of Shenzhen this electron rich Co., Ltd, important technological parameters: video input, the input of 8 road composite videos; Image compression format, MPEG2; The video resolution, D1, CIF, FIELD, QCIF is optional; Video frame rate, 25 frame/seconds; Communication interface, 10M/100M self adaptation Ethernet interface, RS485/RS232 serial ports, RJ45 mouth; Procotol, TCP/IP.The multi-channel video image that video server sends the scene compiles and manages.
The emergency command main frame of present embodiment is the five screen portable computers that a kind of screen can fold, as shown in Figure 5, it has 1 15 cun main display, 4 6.4 cun and can fold the secondary display screen packed up and abundant interface resource: 4 USB interface, 2 Ethernet interfaces, 1 external CD-ROM driver interface, 1 serial ports and 1 parallel port; Wherein, main display is embedded on the main frame, and 2 of secondary display screens are one group, are distributed in the main display both sides, and 2 groups of secondary display screens are connected with main frame by hinge, and secondary display screen can rotate in the 0-180 degree scope.Outward appearance when four secondary display screens are packed up is shown in Fig. 5 (a), and the outward appearance when four secondary display screens of emergency command main frame launch is shown in Fig. 5 (b).Also comprise: support other conventional components of PCI mainboard, CPU, 4 split screen cards, internal memory, hard disk, network interface card, CD-ROM drive, power supply, keyboard, mouse and the computer of integrated graphics card, integrated network card and 4 USB mouths to constitute, wherein, the VGA plate of 4 6.4 cun liquid crystal display screens is connected with 4 VGA mouths of 4 split screen cards by 15 core coaxial cables respectively, and 15 cun liquid crystal display screens are connected with the VGA mouth of mainboard integrated graphics card by 15 core coaxial cables; Utilize operating system such as Widows98/2000/XP to support the function of multihead display, on main display and 4 secondary display screens, show different monitored pictures respectively by control program; Each several part embodiment is as follows:
CPU: adopt intel pentium M 760 processors, important technological parameters: dominant frequency, 2.0GHz; L2 cache, 2MB; FSB, 400MHz.
Mainboard: adopt and grind Chinese workers owner's plate PCI-6881 (band fan fin), important technological parameters: integrated graphics card and 1000Base-T Ethernet card on the plate; Support the 400MHz Front Side Bus; Support is used for 48 LVDS of 2 passages of LCD; Support 4 USB 2.0 ports, support 2 200P SODIMM sockets that use the DDR internal memory, the internal memory maximum can be supported 2GB.
4 split screen cards: adopt Ai Ersha ATI FireMV 2400PCIE, important technological parameters: split screen number, 4; Interface type, PCI-E, VHDCI interface (switchable is DVI or VGA interface); Show output, 4VGA; Display memory, the 128MB/ screen; Support ultimate resolution, 2048 * 1536 (simulations), 1600 * 1200 (DVI).
Internal memory: adopt Jin Shidun DDR internal memory, important technological parameters: capacity, 512M; Interface, 200 lines.
Hard disk: adopt the 2.5 cun hard disks in Seagate, important technological parameters: capacity, 160G; Rotating speed, 5400 change.
Network interface card: adopt D-Link DGE-530T network interface card, important technological parameters: bus interface, PCI; Support the PCMCIA standard, not; Interface type, RJ-45; Transmission rate (Mbps), 10/100/1000.
CD-ROM drive: adopt Samsung DVD to drive TS-H352D, important technological parameters: mounting means, built-in; Interface standard, ATAPI/EIDE; Maximum reading speed, 48X; Buffer memory capacity, 198KB.
Power supply: adopt the electrician of Weida industry power supply ACE-841AP-S, important technological parameters: efficient, 65%; Hold time minimum 16ms; Protection, overvoltage, overload protection and short-circuit protection; MTBF, 100000hrs in the time of 25 ℃; + 3.3V and+gross output of 5V is no more than 200W; + 3.3V ,+5V and+gross output of 12V is no more than 380W; Safety standard meets UL60950, TUV EN60950, cUL CSA 22No.60950, CE standard; EMS, IEC 1000-4-2, IEC 1000-4-3, IEC 1000-4-4, IEC 1000-4-5, IEC 1000-4-11; Working temperature, 0～50 ℃; Anti-vibration along X, Y, Z three direction of principal axis, in the vibration test of 3 to 30 minute time cycle and 2G, can be born the vibration frequency of 10～55Hz; Shock resistance, the 10G acceleration continues 11 milliseconds in X, Y, each direction of Z axle.
15 cun liquid crystal display screens: adopt SHARP LCD LQ150X1LW71N, important technological parameters: screen size, 15 "; Screen type, TFT LCD; Resolution, 1024*768; Contrast, 400: 1; Brightness, 250; Visible angle, 85/85/85/85 degree.
6.4 very little liquid crystal display screen: adopt SHARP LCD LQ064V3DG01, important technological parameters: screen size, 6.4 "; Screen type, TFT LCD; Resolution, 640X480; Contrast, 150: 1; Brightness, 350.
Keyboard: adopt the industry control touch pad keyboard LKB88 of QDI Science and Technology Ltd., important technological parameters: keyboard number, 87 keys; The keyboard pulling capacity, 〉=0.8Kgf; The keyboard resilience force, 55+5gf; The main material of keyboard, ABS; The keyboard working life, 1,000 ten thousand times.
Mouse: adopt sieve skill G1 mouse, important technological parameters: interface type, USB+PS/2; The computer connected mode, wired; Working method, photoelectricity; Location technology, the light-emitting diode location.
The embodiment workflow of the emergency cooperative commander method for supervising of the said system that the present invention adopts may further comprise the steps as shown in Figure 6:
1) gather the on-the-spot wind direction of dangerous chemical leakage accident, wind speed, gas leakage concentration, GPS locating information and live video image in real time:
Wind direction and wind velocity, gas concentration and the GPS locating information of explosion-proof type is wireless each monitoring point of gas detecting instrument collection site are wirelessly transmitted to on-the-spot Police Command Center, and wireless receiving module receives these information and passes to the emergency command main frame; The explosion-proof transmitter collection site of individual soldier video information is sent to the receiver of on-the-spot Police Command Center by wireless mode, and receiver is passed to video server after to picture decoding.
2) field data is received, stores, handles and shows:
The emergency command main frame receives on-the-spot wind direction, wind speed, gas leakage concentration and GPS information, and deposits real-time data base in;
The emergency command main frame utilizes configuration software that wind direction, wind speed and the gas leakage concentration of each monitoring point are shown and analyzing and processing by hazardous chemical scene of the accident meteorology and concentration monitor subsystem, determine on-the-spot mean wind direction wind speed and spillage risk chemical name, and on 2 secondary display screens in emergency command main frame left side, show scene of the accident mean wind direction wind speed information, gas concentration information configuration picture respectively; By hazardous chemical MSDS and emergency disposal information inquiry subsystem inquiry hazardous chemical MSDS database, draw on-the-spot emergency disposal measures such as the decontamination of spillage risk chemicals and leak stopping, and on the secondary display screen above the emergency command main frame right side, show chemicals MSDS information and the on-the-spot emergency disposal measure of leaking;
The emergency command main frame obtains video information by hazardous chemical scene of the accident video monitoring subsystem accessing video server, shows the live video image on the secondary display screen in lower right; And can as required on-the-spot one or more image be recorded a video;
The emergency command main frame moves on main display and shows the generalized information system picture, accesses the electronic chart of accident periphery.
3) according to wind direction, wind speed, gas leakage concentration and the GPS information of each monitoring point, utilize trained three layers of MLP neural net based on the BP algorithm, inverse goes out source of leaks intensity;
4) based on the classical diffusion model of the position of monitoring sensor, instantaneous meteorological condition, source of leaks intensity and Gauss, calculate and simulate time dependent gaseous diffusion concentration field; According to spillage risk chemicals character, definite accident pattern that may cause according to gaseous diffusion concentration field and gas leakage damage sequence model, calculates the accident casualty radius in real time, and on the GIS map, demonstrate the accident harm coverage, thereby determine the evacuating personnel scope;
5) according to the GPS positional information of the wireless gas detecting instrument of on-the-spot explosion-proof type, on the GIS map, demonstrate the emergency management and rescue strength and the emergency management and rescue facility of accident periphery, in conjunction with scene of the accident periphery GIS information, search for and demonstrate the evacuating personnel path into the best on electronic chart, commander provides decision-making foundation for emergency management and rescue.
Claims (5)
1, a kind of emergency cooperative monitoring system for dangerous chemical leakage accident, it is characterized in that, this system comprises: by a plurality of explosion-proof type individual soldier's wireless video transmitting apparatus, realize explosion-proof type individual soldier's wireless video transmission subsystem that a plurality of explosion-proof type individual soldier's radio video reception devices of radio communication are formed with this transmitting apparatus, by the wireless gas detecting instrument of a plurality of explosion-proof types, realize the explosion-proof type wireless gas concentration monitoring subsystem that the wireless receiving module of radio communication is formed with each detector, and emergency command main frame, video server; Wherein, a plurality of explosion-proof type individual soldier's wireless video transmitting apparatus and the wireless gas detecting instrument of a plurality of explosion-proof type are arranged at the on-the-spot periphery of leakage accident; These a plurality of explosion-proof type individual soldier's radio video reception devices, wireless receiving module, emergency command main frame, video server are arranged at on-the-spot Police Command Center; These a plurality of explosion-proof type individual soldier's radio video reception devices link to each other with video server, and this emergency command main frame links to each other with wireless receiving module, video server respectively.
2, the system as claimed in claim 1, it is characterized in that the wireless gas detecting instrument of described explosion-proof type mainly is provided with switch, power supply and power-switching circuit, transmitting antenna and gps antenna and is constituted by wind direction and wind velocity sensor, 6 kinds of gas concentration sensor, single-chip microcomputer and peripheral circuit thereof, GPS module, wireless sending module, ID; Its annexation is: described 6 kinds of gas sensor outputs link to each other with its input amplifier, each amplification circuit output end is connected with the AD translation interface of described single-chip microcomputer, the wind speed of described wind speed wind direction sensor, wind direction output port are connected with the PC mouth with the PB of single-chip microcomputer respectively, described GPS module, wireless sending module and power-switching circuit all link to each other with single-chip microcomputer, and described power supply links to each other with power-switching circuit; Described SCM peripheral circuit comprises: wind speed testing circuit, wind direction testing circuit, GPS modular circuit, ID are provided with circuit, single-chip microcomputer crystal oscillating circuit, AD conversion reference voltage circuit, wherein, the wind speed testing circuit links to each other with described air velocity transducer, the wind direction testing circuit links to each other with described wind transducer, the GPS modular circuit links to each other with the GPS module, and ID is provided with circuit and with ID switch is set and links to each other.
3, the system as claimed in claim 1, it is characterized in that, described explosion-proof type individual soldier's wireless video transmitting apparatus adopts the COFDM modulation technique that image is encoded, and each group explosion-proof type individual soldier's wireless video transmitting apparatus and individual soldier's radio video reception device are finished collection, transmission and the reception of one road image scene; Explosion-proof type individual soldier's wireless video transmission subsystem sends live video to by the wireless video collecting device at scene the radio video reception device of Police Command Center.
4, the system as claimed in claim 1, it is characterized in that, described emergency command main frame is the five screen portable computers that a kind of screen can fold, and it mainly is made of PCI mainboard, CPU, 4 split screen cards, internal memory, hard disk, network interface card, CD-ROM drive, power supply, 1 15 cun liquid crystal display screen, 4 6.4 cun liquid crystal display screens, keyboard, mouses of supporting integrated graphics card, integrated network card and 4 USB mouths; Wherein, the VGA plate of 4 6.4 cun liquid crystal display screens is connected with 4 VGA mouths of 4 split screen cards by 15 core coaxial cables respectively, and 15 cun liquid crystal display screens are connected with the VGA mouth of mainboard integrated graphics card by 15 core coaxial cables; Utilize operating system such as Widows98/2000/XP to support the function of multihead display, on main display and 4 secondary display screens, show different monitored pictures respectively by control program.
5, a kind of emergency cooperative method for supervising that adopts the described system of claim 1, it is characterized in that: described method comprises:
1) gather the on-the-spot wind direction of dangerous chemical leakage accident, wind speed, gas leakage concentration, GPS locating information and live video image in real time:
Wind direction and wind velocity, gas concentration and the GPS locating information of explosion-proof type is wireless each monitoring point of gas detecting instrument collection site, explosion-proof type individual soldier's wireless video transmitting apparatus collection site video information sends the emergency command main frame of on-the-spot Police Command Center respectively to by wireless mode;
2) field data is received, stores, handles and shows:
The emergency command main frame receives on-the-spot wind direction, wind speed, gas leakage concentration, and deposits real-time data base in;
The emergency command main frame is according to wind direction, wind speed, the gas leakage concentration information of each monitoring point, determine on-the-spot mean wind direction wind speed and spillage risk chemical name, by inquiry hazardous chemical MSDS database, draw on-the-spot emergency disposal measures such as the decontamination of spillage risk chemicals and leak stopping;
The emergency command main frame shows scene of the accident mean wind direction wind speed information, gas concentration information configuration picture respectively, leaks chemicals MSDS information and emergency disposal measure and live video monitored picture on secondary display screen, and moves on main display and demonstration generalized information system picture;
3) according to wind direction, wind speed, gas leakage concentration and the GPS information of each monitoring point, utilize trained three layers of MLP neural net based on the BP algorithm, inverse goes out source of leaks intensity;
4) based on the classical diffusion model of the position of monitoring sensor, instantaneous meteorological condition, source of leaks intensity and Gauss, calculate and simulate time dependent gaseous diffusion concentration field; According to spillage risk chemicals character, definite accident pattern that may cause according to gaseous diffusion concentration field and gas leakage damage sequence model, calculates the accident casualty radius in real time, and on the GIS map, demonstrate the accident harm coverage, thereby determine the evacuating personnel scope;
5) according to the GPS positional information of the wireless gas detecting instrument of on-the-spot explosion-proof type, on the GIS map, demonstrate the emergency management and rescue strength and the emergency management and rescue facility of accident periphery, in conjunction with scene of the accident periphery GIS information, search for and demonstrate the evacuating personnel path into the best on electronic chart, commander provides decision-making foundation for emergency management and rescue.
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| CN110748801A (en) * | 2019-11-05 | 2020-02-04 | 深圳汉光电子技术有限公司 | Pipeline leakage detection method, device and system |
| CN111382936A (en) * | 2020-03-05 | 2020-07-07 | 中广核工程有限公司 | Nuclear emergency evacuation optimal scheduling method and system based on internet unmanned vehicle |
| CN111382936B (en) * | 2020-03-05 | 2024-02-02 | 中广核工程有限公司 | Nuclear emergency evacuation optimal dispatching method and system based on network-connected unmanned vehicle |
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