CN103661487A - Train security check system and method with improved radiation protection function - Google Patents
Train security check system and method with improved radiation protection function Download PDFInfo
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- CN103661487A CN103661487A CN201210364338.6A CN201210364338A CN103661487A CN 103661487 A CN103661487 A CN 103661487A CN 201210364338 A CN201210364338 A CN 201210364338A CN 103661487 A CN103661487 A CN 103661487A
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Abstract
The invention discloses a train security check system and method with the improved radiation protection function. The train security check system with the improved radiation protection function comprises a magnetic sensor set (102), a signal conditioning circuit box (104), a data acquisition card (106), a carriage identification industrial personal computer (108), an accelerator (120), a detector (122), a mechanical shutter (116) and a scanning monitor (110), wherein the magnetic sensor set (102) is used for collecting signals of train wheels, the signal conditioning circuit box (104) is used for obtaining regular pulse signal sequences, the data acquisition card (106) is used for calculating the speed and the wheel base of a train, the carriage identification industrial personal computer (108) is used for judging the types of carriages and calculating hook clanking signals of the carriages, the accelerator (120) is used for generating and emitting X rays to scan the carriages of the train, the detector (122) is used for receiving the X rays which penetrate through the carriages of the train to generate electrical signals, the mechanical shutter (116) is used for blocking the X rays of the accelerator (120), and the scanning monitor (110) is used for having control over work of the accelerator (120) and controlling the mechanical shutter (116) to be opened and closed. According to the train security check system and method with improved radiation protection function, system reliability and check efficiency are greatly improved.
Description
Technical field
The present invention relates to safety inspection field, relate in particular to train safe inspection.
Background technology
Along with sharply increasing and international security situation increasingly serious of countries in the world trade contacts, each state is all constantly strengthening the cargo safety inspection dynamics of customs, aviation and frontier inspection bayonet socket.The cargo security check system of reorganization train has very important effect at the port, land route of various countries.Because it is OOBA (out of box audit) not, therefore greatly improved the cargo clearance speed at port.
Train safe check system belongs to a kind of passive type scan pattern, be that train operator drives reorganization train through scan channel, check system scans whole train by controlling active source generation X ray, then utilize detector to receive and through the X ray of train, produce electric signal, and deliver to data processing center, in data processing center, after processing, form scan image, thereby complete the not OOBA (out of box audit) to train.In whole checking process, to have driver's locomotive and to shuffling the passenger car in goods train dodge, to protect passengers inside the car's radiation safety.
At present, the method that train safe check system in the world adopts is several to opto-electronic pickup in the installation of rail both sides, utilizes the connection neutral gear region between compartment and compartment to distinguish compartment joint number, to dodge locomotive and passenger car.Because this way is not distinguished locomotive, passenger car and boxcar; therefore in scanning process; in order to protect train operator's radiation safety; require supervisory personnel and station, the place ahead to closely cooperate; for confirmation will checked train information (such as there being a few joint locomotives, whether afterbody has locomotive, total joint number in compartment etc.); thereby make control system can calculate in advance compartment joint number, to dodge locomotive and passenger car.And, due to opto-electronic pickup, be subject to the interference of the external environment conditions such as sunlight, sleet, insect, dust, greasy dirt larger, therefore easily there is maloperation, so service personnel all will be done the cleaning of opto-electronic pickup every day, very inconvenient.
Summary of the invention
Technical matters to be solved by this invention is to provide has improved radiation proof train safe check system and method.
For this reason, according to a first aspect of the invention, provide a kind of train safe check system.Described train safe check system comprises: Magnetic Sensor group, and its rail inner side being installed in the region of X ray beam center both sides certain limit is upper, and for gathering the signal of train wheel, each Magnetic Sensor group comprises three Magnetic Sensors; Signal conditioning circuit case, for carrying out shaping and level translation to obtain regular sequences of pulsed signals to the magnetic sensor signal sequence of input; Data collecting card, for according to the arrival of each pulse of the sequences of pulsed signals of input constantly, calculates speed and the wheelbase of train; Identification of the Freight Train Car industrial computer, train speed and wheelbase information for basis from data collecting card, use known merogenesis flow process in system database to carry out merogenesis to wheelbase, and differentiate flow process by vehicle known in system database the wheelbase of merogenesis is carried out to the differentiation of car types, and the hook pan signal that calculates compartment; Accelerator, for generation of and launch X ray, railway car is scanned; Detector, produces electric signal for receiving through the X ray of railway car; Mechanical shutter, it is installed in before accelerator, for blocking the X ray of accelerator; And scanning monitor, car types and the hook pan signal of the train receiving from Identification of the Freight Train Car industrial computer for basis, in scanning process, control the work of accelerator and the opening and closing of mechanical shutter, to realize the control of dodging to the locomotive in train and passenger car.
According to a second aspect of the invention, provide a kind of train safe inspection method.Described train safe inspection method comprises: on the rail inner side in the region of X ray beam center both sides certain limit, Magnetic Sensor group is installed to gather the signal of train wheel, wherein each Magnetic Sensor group comprises three Magnetic Sensors; Magnetic sensor signal sequence is carried out to shaping and level translation to obtain regular sequences of pulsed signals; According to the arrival of each pulse in sequences of pulsed signals constantly, calculate speed and the wheelbase of train; According to train speed and wheelbase information, use known merogenesis flow process in system database to carry out merogenesis to wheelbase, and differentiate flow process by vehicle known in system database the wheelbase of merogenesis is carried out to the differentiation of car types, and the hook pan signal that calculates compartment; And according to the car types of train and hook pan signal, in scanning process, control the work of accelerator and the opening and closing of mechanical shutter, to realize the control of dodging to the locomotive in train and passenger car, wherein, accelerator produces and launches X ray, railway car is scanned, and the X ray that passes railway car receives to produce electric signal by detector; Mechanical shutter is installed in before accelerator, for blocking the X ray of accelerator.
By utilizing above-mentioned train safe check system and method, system reliability and checking efficiency have greatly been improved.And, due to the train information that has utilized Identification of the Freight Train Car industrial computer to provide, therefore do not need to confirm in advance train information with station, the place ahead.Meanwhile, Magnetic Sensor can adapt to various mal-conditions, and maintenance cost is very low, does not need service personnel scene on duty.
Accompanying drawing explanation
Read in conjunction with the drawings the specific embodiment below, the feature and advantage that the present invention may be better understood, wherein represent same or analogous element with identical Reference numeral in the accompanying drawings, and the element in accompanying drawing is not necessarily drawn in proportion.In the accompanying drawings:
Fig. 1 illustrates the schematic block diagram of train safe check system according to an embodiment of the invention;
Fig. 2 is the schematic diagram illustrating for an example of the layout of the Magnetic Sensor group of simple scanning;
Fig. 3 is the schematic diagram illustrating for an example of the layout of the Magnetic Sensor group of bilateral scanning;
Fig. 4 illustrates the schematic diagram that calculates according to an embodiment of the invention the speed of train and the principle of wheelbase;
Fig. 5 illustrates the schematic diagram of train merogenesis handling principle according to an embodiment of the invention;
Fig. 6 illustrates the schematic flow diagram that train merogenesis is processed according to an embodiment of the invention;
Fig. 7 illustrates the schematic flow diagram of railway car type judgement according to an embodiment of the invention;
Fig. 8 illustrates the schematic diagram of train hook pan handling principle according to an embodiment of the invention; And
Fig. 9 illustrates the plan sketch of a part for train safe check system according to an embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing, describe each embodiment of the present invention in detail.
With reference to figure 1, the schematic block diagram of train safe check system 100 according to an embodiment of the invention shown in it.Described train safe check system 100 comprises Magnetic Sensor group 102, signal conditioning circuit case 104, data collecting card 106, Identification of the Freight Train Car industrial computer 108, scanning monitor 110, CCTV camera 112, safety interlock system 114, mechanical shutter 116, light curtain 118, accelerator 120, detector 122 and control interface 124.
The rail inner side that Magnetic Sensor group 102 is installed in the region of X ray beam center both sides certain limit of whole check system is upper, for gathering the signal of train wheel.Every group of Magnetic Sensor comprises three Magnetic Sensors, and wherein two is work Magnetic Sensor, and one is redundancy Magnetic Sensor.In same group of Magnetic Sensor, the spacing between Magnetic Sensor is about 150-300 millimeter, and this depends on the actual pitch of railway sleeper and the minimum wheelbase in compartment.
According to one embodiment of present invention, if check system 100 is simple scannings, 4 groups of Magnetic Sensors are set.Fig. 2 illustrates the schematic diagram of an example of the layout of the Magnetic Sensor group of the enterprising line scanning of line direction (being direction from left to right in the drawings) ON TRAINS.S0, S1, S2 are respectively the up Magnetic Sensor groups at 400 meters, 100 meters, 4 meters, beam center O point left side, for being captured in the signal of the train wheel generation of travelling on up direction.The position that Magnetic Sensor group S2 is installed in apart from 4 meters of beam centers is based on following consideration: Magnetic Sensor group S2 is used for sending hook pan signal (just as hereinafter described), because last wheel of compartment is approximately 3.6-4 rice to the distance of hook pan, therefore Magnetic Sensor group S2 can be installed in the position of selecting 3.6-4 rice apart from beam center O, for example 4 meters.The position that Magnetic Sensor group S1 is installed in apart from 100 meters of beam center O points is based on following consideration: in check system 100, the maximum speed of design scanning train is 8 meter per seconds, because accelerator 120 generally needs the 6-8 time of second from adding magnetic high pressure to stable, therefore for the train of 8 meter per seconds or even quicker speed, need the distance of 100 meters of left and right to stablize.The position that Magnetic Sensor group S0 is installed in apart from 400 meters of beam center O points is based on following consideration: from the Magnetic Sensor group S1 at S0 to 100 meter of of Magnetic Sensor group of 400 meters, have the distance of 300 meters, the maximum speed that scans train due to design in check system 100 is 8 meter per seconds, therefore the distance of 300 meters can be given the operating personal time of about 40 seconds to allow it pass through CCTV camera 112 confirmation passenger and freight car operating mouse button clicks, according to field condition, distance between Magnetic Sensor group S0 and beam center O point can be controlled to 400 ± 100 meters, be 300-500 rice.X0 is the Magnetic Sensor group at 100 meters of, beam center O point right side, for detection of down direction (in the drawings for dextrosinistral direction), sends a car to prevent accident.
According to one embodiment of present invention, if check system 100 is bilateral scannings, 6 groups of Magnetic Sensors are set.Fig. 3 is illustrated in the schematic diagram of an example of the layout of the Magnetic Sensor group that all can scan on train up direction (in the drawings for direction) from left to right and down direction (being dextrosinistral direction in the drawings).S0, S1, S2 are respectively the up Magnetic Sensor groups at 400 meters, 100 meters, 4 meters, beam center O point left side, for being captured in the signal of the train wheel generation of travelling on up direction.X0, X1, X2 are respectively the descending Magnetic Sensor groups at 400 meters, 100 meters, 4 meters, beam center O point right side, for being captured in the signal of the train wheel generation of travelling on down direction.The selection of the distance of ordering from beam center O in the installation site of Magnetic Sensor group S0/X0, S1/X1, S2/X2 based on consideration respectively with the selection of the distance that order from beam center O in the installation site of Magnetic Sensor group S0, S1, S2 in simple scanning is arranged above based on consideration identical.Because the direction of 1,2, No. 3 Magnetic Sensor in Magnetic Sensor group is with to detect the direction that train arrives consistent, therefore the order of 1,2, No. 3 Magnetic Sensor in up Magnetic Sensor group S0, S1, S2 is contrary with the order of 1,2, No. 3 Magnetic Sensor in descending Magnetic Sensor group X0, X1, X2.
The principle of work of Magnetic Sensor is similar to a magnet.When the locomotive of train and each wheel in Ge Jie compartment sequentially pass through each Magnetic Sensor in Magnetic Sensor group, wheel cutting Magnetic Sensor magnetic line of force, so according to the difference of train speed, these Magnetic Sensors are just exported the voltage signal with different amplitudes, thereby magnetic sensor signal sequence is provided.
Described magnetic sensor signal sequence is sent to signal conditioning circuit case 104 by transmission cable.Signal conditioning circuit case 104 obtains regular sequences of pulsed signals after described magnetic sensor signal sequence is carried out to shaping and level translation, and described sequences of pulsed signals is provided for data collecting card 106.
The principle of the speed of train and the method for calculating of wheelbase as shown in Figure 4.For every group of 3 Magnetic Sensors, utilize wherein any two speed and wheelbases that just can calculate train, another one Magnetic Sensor is used for redundancy and backup, makes when certain Magnetic Sensor lossing signal, still can correct measurement goes out speed and the wheelbase of train.
In Fig. 4, z axis represents a rail, and two work Magnetic Sensor a and b in a Magnetic Sensor group are only shown on this rail.C1 is the distance between Magnetic Sensor a and b, for example, be 150-300 millimeter, and this will determine according to the minimum wheelbase of the actual pitch of railway sleeper and railway car.Second and three axis in Fig. 4 is on axis a and b, with the form of sequential chart, represents that a joint compartment (conventionally, for example there are 4 axletrees in a joint compartment) travels by the corresponding wheel pulse signal collecting after Magnetic Sensor a and b.That particularly, on axis a, represent is 4 wheel pulse signal L that Magnetic Sensor a produces
1, L
2, L
3, L
4; That on axis b, represent is similar 4 wheel pulse signal L that Magnetic Sensor b produces
1', L
2', L
3', L
4'.
In Fig. 4, the time difference between first pulse on a and b axis for example, corresponding to the one section of known distance (distance c 1 between two adjacent Magnetic Sensors) on wheel process rail.Suppose that wheel is t1 through this segment distance c1 time used, asks the formula of speed according to physics:
V=c1/t1 (formula 1)
Just can calculate the speed of train.
According to the following computing formula of wheelbase, can calculate wheelbase h:
Wheelbase
(formula 2)
Wherein, v1 is the speed that a upper wheel arrives, and v2 is the speed arriving when front vehicle wheel, and t2 is that these two wheels are by the time gap of same Magnetic Sensor on rail.
Return to continue with reference to figure 1, train speed and wheelbase information that Identification of the Freight Train Car industrial computer 108 receives from data collecting card 106, use known merogenesis flow process in system database to carry out merogenesis to wheelbase, and differentiate flow process by vehicle known in system database the wheelbase of merogenesis is carried out to the differentiation of car types, and the hook pan signal that calculates compartment.
" merogenesis " refers to a series of wheelbase data of the row train collecting separated according to real a section compartment.The number of axle of most domestic railway car is 4 axles, 5 axles, 6 axles and 8 axles now.Their wheelbase meets following 3 rules:
Rule 1: the wheelbase in compartment is symmetrical mutually about the center-point left and right in compartment, as shown in Figure 5, the L in locomotive
1,2=L
5,6, L
2,3=L
4,5, the L in compartment 1
7,8=L
9,10(L wherein
i,jrefer to the distance between i wheel and j wheel, lower same);
First wheel of 2: one cars of rule is greater than 7 meters to the distance of last wheel, as shown in Figure 5, and the L in locomotive
1,6>7 rice, the L in compartment 1
7,10>7 rice;
Wheelbase between 3: two bogie trucks of rule is greater than the wheelbase at hook pan place, and the wheelbase at hook pan place is greater than the wheelbase of bogie truck, for example the L in the locomotive of Fig. 5
3,4>L
6,7>L
1,2, the L in compartment 1
8,9>L
10,11>L
7,8.
Certainly, apart from the above, also there will be the compartment of the number of axle that equals other positive integers completely.As long as according to principle of the present invention, just can be very easily by their wheelbase law-analysing out, the known axes adding to is above used together in rule.
The method of train wheelbase merogenesis is as shown in the diagram of circuit of Fig. 6.
System initialization: T, N are put to 1, i and set to 0.T represents that the train wheelbase before T wheelbase has been divided into a section single-unit compartment, and N represents currently just utilizing N wheelbase to start to divide compartment, and i represents the number of the current wheelbase of also not dividing.
Read 1 wheelbase information: when two wheels of a row train pass through one group of Magnetic Sensor, the data collecting card being connected with this group Magnetic Sensor just can calculate a wheelbase information at once, and it is sent to Identification of the Freight Train Car industrial computer.Identification of the Freight Train Car industrial computer reads this wheelbase information, and the number i of the corresponding wheelbase of dividing just adds 1.
Meet 4 axle gauge rules: 3 rules of wheelbase are applied on 4 axles, if the words of 4 axle cars must meet following 4 rules:
Whether 1: the N wheelbase value of rule approximates N+2 wheelbase value, and whether the absolute value of the difference of N wheelbase value and N+2 wheelbase value is less than 100 millimeters;
Rule 2: the N, N+1, these three wheelbases of N+2 and whether be greater than 7000 millimeters;
Whether 3: the N+1 wheelbase values of rule are greater than N+3 wheelbase value;
Whether 4: the N+3 wheelbase values of rule are greater than N wheelbase value.
When i≤2, the number of the current wheelbase of also not dividing is less than at 3 o'clock, because can be for the data deficiencies of analyzing, so do not do 4 axle law-analysings.
When i=3, the number of the current wheelbase of also not dividing equals at 3 o'clock, can to these 3 wheelbases of N+3, carry out the analysis of rule 1 and rule 2 to N.If do not met, think that current such division does not meet 4 axle gauge rules; If met, think that current such division may meet 4 axle gauge rules, continues to wait for next axle, i.e. i=4.
When i >=4, the number of the current wheelbase of also not dividing surpasses at 3 o'clock, checks whether N meets aforesaid 4 rules to these 4 wheelbases of N+3.If met, think and meet 4 axle gauge rules; If do not met, think and do not meet 4 axle gauge rules.
Meet 5 axle gauge rules: be similar to 4 axle gauge rules, 3 rules of wheelbase are applied on 5 axles, if the words of 5 axle cars must meet following 5 rules:
Whether 1: the N wheelbase value of rule approximates N+3 wheelbase value, and whether the absolute value of the difference of N wheelbase value and N+3 wheelbase value is less than 100 millimeters;
Whether 2: the N+1 wheelbase values of rule approximate N+2 wheelbase value, and whether the absolute value of the difference of N+1 wheelbase value and N+2 wheelbase value is less than 100 millimeters;
Rule 3: the N, N+1, these four wheelbases of N+2, N+3 and whether be greater than 7000 millimeters;
Whether 4: the N+1 wheelbase values of rule are greater than N+4 wheelbase value;
Whether 5: the N+4 wheelbase values of rule are greater than N wheelbase value.
When i≤3, because can be for the data deficiencies of analyzing, so do not do 5 axle law-analysings.When i=4, can carry out the analysis of rule 1,2,3.When i >=5, carry out 5 law-analysings.If met, think and meet 5 axle gauge rules; If do not met, think and do not meet 5 axle gauge rules.
Meet 6 axle gauge rules: be similar to 4 axle gauge rules, 3 rules of wheelbase are applied on 6 axles, if the words of 6 axle cars must meet following 5 rules:
Whether 1: the N wheelbase value of rule approximates N+4 wheelbase value, and whether the absolute value of the difference of N wheelbase value and N+4 wheelbase value is less than 100 millimeters;
Whether 2: the N+1 wheelbase values of rule approximate N+3 wheelbase value, and whether the absolute value of the difference of N+1 wheelbase value and N+3 wheelbase value is less than 100 millimeters;
3: the N of rule to these five wheelbases of N+4 and whether be greater than 7000 millimeters;
Whether 4: the N+2 wheelbase values of rule are greater than N+5 wheelbase value;
Whether 5: the N+5 wheelbase values of rule are greater than N wheelbase value.
When i≤3, because can be for the data deficiencies of analyzing, so do not do 6 axle law-analysings.When i=4, can carry out the analysis of rule 2.When i=5, can carry out the analysis of rule 1,2,3,4.When i >=6, carry out 5 law-analysings.If met, think and meet 6 axle gauge rules; If do not met, think and do not meet 6 axle gauge rules.
Whether 1: the N wheelbase value of rule approximates N+6 wheelbase value, and whether the absolute value of the difference of N wheelbase value and N+6 wheelbase value is less than 100 millimeters;
Whether 2: the N+1 wheelbase values of rule approximate N+5 wheelbase value, and whether the absolute value of the difference of N+1 wheelbase value and N+5 wheelbase value is less than 100 millimeters;
Whether 3: the N+2 wheelbase values of rule approximate N+4 wheelbase value, and whether the absolute value of the difference of N+2 wheelbase value and N+4 wheelbase value is less than 100 millimeters;
4: the N of rule to these seven wheelbases of N+6 and whether be greater than 7000 millimeters;
Whether 5: the N+3 wheelbase values of rule are greater than N+7 wheelbase value;
Whether 6: the N+7 wheelbase values of rule are greater than N wheelbase value.
When i≤4, because can be for the data deficiencies of analyzing, so do not do 8 axle law-analysings.When i=5, can carry out the analysis of rule 3.When i=6, can carry out the analysis of rule 2,3.When i=7, can carry out the analysis of rule 1,2,3,4.When i >=8, carry out 6 law-analysings.If met, think and meet 8 axle gauge rules; If do not met, think and do not meet 8 axle gauge rules.
Institute is regular not to be met: all 4,5,6,8 axle gauge rules do not meet.
N=N+1: do not meet if institute is regular, N=N+1 divides since N+1 axle next time; I=i-1, does not also have the number of the wheelbase of division to subtract 1.N axle cannot be used for dividing, and temporarily first puts aside, and now T will be not equal to N.Then next flow process re-starts 4,5,6,8 axle law-analysings after starting.
T is divided into a joint compartment to N wheelbase: if carried out, time law-analysing, find to meet the demands, so just can determine that current these wheelbase values are the wheelbase value in a joint compartment and the number of axle in this joint compartment, are divided into a joint compartment by N to the number of axle-1, a N+ compartment axle.For example meet 4 axle gauge rules, N, N+1, N+2, N+3 are 4 wheelbase values of joint 4 axle cars so, and the compartment number of axle is 4.
T axle is divided into a joint compartment to N axle: if T=N does not have above the wheelbase value that cannot divide, need not carry out this step.If T>N, has the wheelbase value that cannot divide above, so just will not have the wheelbase value of dividing to be out divided into a joint compartment above, be about to T wheelbase and be divided into a joint compartment to N-1 wheelbase value.
The N=N+ compartment number of axle: complete because wheelbase value above has been divided, so divide since a N+ compartment number of axle axle next time.The i=i-compartment number of axle, does not also have the number of the wheelbase of division to reduce the compartment number of axle; T=N, before representing, the number of axle-1, a N+ compartment wheelbase has been divided completely, does not exist and there is no the wheelbase value of division.
Below in conjunction with Fig. 5, provide the example of train wheelbase merogenesis method.
For example, when one group of Magnetic Sensor by system of the present invention of a row train as shown in Figure 5,14 wheels will produce 13 wheelbase information successively altogether.If the measured wheelbase information sequence of the data collecting card that Magnetic Sensor is corresponding is 1802,1803,8378,1796,1792,4233,1762,7538,1753,2895,1756,7530,1769, unit is millimeter.Since the 1st wheelbase " 1802 ", when the 3rd axle read in accumulation, check 4 axle gauge rules, obviously front 3 wheelbase values do not meet the rule of front 3 axles of 4 axle gauge rules, carry out so successively, when 6 axles are read in accumulation, carry out 6 axle gauge rules and check that discovery meets the demands: 1802 ≈ 1792,1803 ≈ 1796,1802+1803+8378+1796+1792 > 7000,8378 > 4233 > 1802.Therefore, can be divided into a joint compartment by 1802,1803,8378,1796,1792,4233.Then since the 7th wheelbase " 1762 ", obvious the 7th to 10 these four axles meet 4 axle gauges rules, therefore also can be divided into a joint compartment, finally the remaining final section compartment that is just divided into.
Train by time, due to various may, for example impact of shock for train, may cause the situation of the dropout of an axle.For example, when the row train consisting of three joint compartments is as shown in Figure 5 during by one group of Magnetic Sensor, the dropout of the 5th wheel, 14 wheels will produce 12 wheelbase information successively so altogether, if the measured wheelbase information sequence of the data collecting card that Magnetic Sensor is corresponding is 1802,1803,8378,3588,4233,1762,7538,1753,2895,1756,7530,1769(totally 12 wheelbases, the synthetic wheelbase value of the 4th, the 5th wheelbase value originally, unit is millimeter).If flow process, since the 1st wheelbase " 1802 ", when carrying out 4,5,6,8 axle gauge rule inspection, is found not meet the demands.So first wheelbase value is first put aside, since the 2nd wheelbase value " 1803 ", re-start law-analysing, find not meet the demands again, and then analyze from the 3rd wheelbase value ... carry out so successively, when starting to the 6th wheelbase " 1762 ", find that the 6th to 9 these four axles meet 4 axle gauge rules, therefore also can be divided into a joint compartment, the the 1st to the 5th wheelbase of will be above not dividing be divided into a joint compartment, finally the remaining final section compartment that is just divided into.
After wheelbase is carried out to merogenesis, re-use vehicle known in system database and differentiate flow process the wheelbase of merogenesis is carried out to the differentiation of car types.Fig. 7 is train single-unit car types decision flow chart.
By analyzing the wheelbase data of the domestic train wheel moving now, draw following rule: when first wheelbase in a joint compartment is less than 1500 millimeters, this joint compartment is boxcar; When first wheelbase in a joint compartment and the 3rd wheelbase are all less than 2000 millimeters, this joint compartment is boxcar; If first wheelbase is more than or equal to 2000 millimeters and the 3rd wheelbase is greater than 2000 millimeters, this joint compartment is locomotive; If first wheelbase is more than or equal to 2000 millimeters and second wheelbase is less than 8000 millimeters, this joint compartment is locomotive; If first wheelbase is more than or equal to 2000 millimeters and second wheelbase is more than or equal to 8000 millimeters, this joint compartment is passenger car.
Therefore, take above-mentioned rule as criterion, Identification of the Freight Train Car industrial computer 108 just can, according to the wheelbase data in obtained a joint compartment, correctly be analyzed the type of judging this joint compartment, i.e. locomotive, boxcar or passenger car at work.
Certainly, along with the increase of car types from now on, may occur ineligible vehicle, so system has been utilized database technology.For example, in Identification of the Freight Train Car industrial computer 108, be just provided with a data bank.By in the prior input database of wheelbase information of special vehicle, during judgement, first search data bank, if meet the vehicle in data bank, this compartment is the type of indicating in data bank, if do not had in data bank, then presses law-analysing.
Identification of the Freight Train Car industrial computer 108 also needs the hook pan signal that calculates compartment to use for scanning monitor 110.The connecting portion in two joint compartments before and after hook pan partly refers to.
For the accurate moment of arrival X ray line center in Gou Dang center (being the Q point in Fig. 8) between compartment before, Yu Gaijie compartment, every joint compartment is provided, each Gou Dang center ON TRAINS (Q point) need to suitably be carried the previous time period and send a hook pan signal to scanning monitor 110 before arriving X ray line center.
As shown in Figure 8, S2 represents Magnetic Sensor group, and G represents the distance of Magnetic Sensor group S2 and X ray beam center.First wheelbase in a joint compartment after L represents.If the hook pan in two joint compartments is apart from (distance between last wheel in last compartment and first wheel in a rear compartment) before and after representing with D, the D/2 shown in figure is exactly 1/2 of this hook pan distance.Q represents the center-point of this hook pan distance.
Magnetic Sensor group S2 is installed in apart from X ray beam center 3.6-4 rice.First wheelbase (wheel-base bogie) in every joint compartment is less than 1900 millimeters conventionally, and hook pan is apart from being generally no more than 3400 millimeters, and acquiescence Gou Dang center is the center-point of hook pan distance.So when second pressure wheel in a rear joint compartment crossed Magnetic Sensor, because G-(D/2)-L is very little, therefore can think that the speed V of train is at the uniform velocity in this segment distance.According to the speed computing formula 1 of having applied above, can calculate Gou Dang center and when arrive X ray beam center.If it is T1 that second, this joint compartment wheel arrives the moment of S2, and should send on time described hook pan signal at moment T1.That is to say, in this hook pan signal sending at moment T1, should comprise time delay T.This time delay T can show: described Gou Dang center will postpone the moment T2(T2=T1+T of a time delay T than this moment T1) arrival X ray line center.The occurrence of G is known (it is stored in system database).In addition, below three amounts, i.e. the wheelbase D of the first wheelbase L in train speed V, second section compartment, the most end axletree in first segment compartment and first axletree in first segment compartment, is known now, therefore, as long as can calculate T according to following formula:
Return to continue with reference to figure 1, scanning monitor 110 is according to car types and the hook pan signal of the train receiving from Identification of the Freight Train Car industrial computer 108, in scanning process, control the work of accelerator and the opening and closing of mechanical shutter, to realize the control of dodging to the locomotive in train and passenger car.
A pair of light curtain 118 is set in the exit of scan channel.Light curtain can detect the object invading between light curtain, so whether this detects and have train to pass through in the exit of scan channel light curtain 118.
Safety interlock system 114 comprises that the safety interlocking key of the operator's station that is positioned at check system, the accelerator hatch door limit switch that is positioned at accelerator cabin, the safety interlocking that is positioned at the equipment compartment door limit switch of equipment compartment and is positioned at control housing allow effective relay.Safety interlocking key, accelerator hatch door limit switch, equipment compartment door limit switch and safety interlocking allow effective relay to form together safe interlocking circuit to control the high voltage connector coil of accelerator 120.Only have when safe interlocking circuit is during in closure state, the high voltage connector coil of accelerator 120 could adhesive, thereby accelerator 120 just can go out bundle.Safety interlocking key is controlled closure and the disconnection of safe interlocking circuit.Safety interlocking key is a switch, and when this key is got to closure state, safe interlocking circuit is closed, and when this key is got to off-state, safe interlocking circuit disconnects.
Below with reference to Fig. 9, the plan sketch of a part 900 for train safe check system according to an embodiment of the invention shown in it.
On rail inner side in each region of 400 meters, the X ray beam center both sides of whole check system, 6 Magnetic Sensor group S0, S1, S2, X0, X1, X2 have been installed, each Magnetic Sensor group includes 3 Magnetic Sensors.S0, S1, S2 are respectively the up Magnetic Sensor groups at 400 meters, 100 meters, 4 meters, beam center O point left side, for being captured in the signal of the train wheel generation of travelling on up direction (being direction from left to right in the drawings).X0, X1, X2 are respectively the descending Magnetic Sensor groups at 400 meters, 100 meters, 4 meters, beam center O point right side, for being captured in the signal of the train wheel generation of travelling on down direction (being dextrosinistral direction in the drawings).Because described check system comprises up Magnetic Sensor group and descending Magnetic Sensor group, therefore can either scan the train travelling on up direction, also can scan the train travelling on down direction, can realize bilateral scanning.
Near Magnetic Sensor group S0, the X0 at 400 meters of, the X ray line center O point left and right sides, CCTV camera AM1, an AM2 have respectively been installed.Magnetic Sensor group when has herein been checked through train while passing through, and can alert by CCTV camera AM1, AM2, carry out manual confirmation to train.
The entrance and exit of scan channel is respectively at, 10 meters of the left and right sides of beam center O point, as shown in Figure 9.At the entrance and exit place of scan channel, be provided with respectively a pair of light curtain, for detecting respectively at the entrance and exit place of scan channel, whether have train to pass through, using as the hardware acknowledgment signal of dodging locomotive and passenger car.
Before the head of the accelerator as radiant, mechanical shutter has been installed, for blocking the X ray of accelerator.Mechanical shutter is an oblong lead, by electromagnetism push rod, is promoted, and can move rapidly.When mechanical shutter is closed, X ray can not enter scan channel, and scan channel is safe; And when mechanical shutter is opened, X ray can enter scan channel.
Accelerator for generation of and launch X ray, railway car is scanned.Detector receives and through the X ray of railway car, produces electric signal.Described electric signal is sent to data processing center (not shown), forms scan image, thereby complete the not OOBA (out of box audit) to train in data processing center after processing.
Described train safe check system also comprises unshowned signal conditioning circuit case, data collecting card, Identification of the Freight Train Car industrial computer, scanning monitor, control interface, safety interlock system, same parts in these parts and Fig. 1 is similar, therefore no longer repeats the description to it here.
Provide the example of scanning process of the train safe check system of Fig. 9 below.
Suppose to have one to be listed in the train travelling on up direction.When this train arrives the Magnetic Sensor group S0 at 400 meters of, beam center O point left side, dialog box is ejected at the control interface on control interface, and alert has train to arrive, and is please manually confirmed whether as lorry.Operating personal, by after checking that near the captured supervision video of CCTV camera AM1 Magnetic Sensor group S0 is confirmed to be lorry, is clicked lorry dialog box tentatively to start scanning process.
When this train arrives the Magnetic Sensor group S1 at 100 meters of, beam center O point left side, Identification of the Freight Train Car industrial computer basis is automatically identified locomotive, passenger car and other various car types from the information of Magnetic Sensor, and recognition result is sent to scanning monitor in real time.Scanning monitor is according to recognition result information, and dialog box is ejected at the control interface on control interface, please reaffirm whether scan by operating personal.Only have and confirm scanning when operating personal, and safety interlocking key is got to closure state so that safety interlock system ready after, check system just formally enters scanning process.Safety interlock system is ready refers to that safe interlocking circuit is in closure state.Now, locomotive is not also by beam center, but accelerator must add magnetic high pressure in advance to enter the steady stage, and accelerator gun high pressure need not add.At this time accelerator does not enter real going out the bundle stage, but gun cathode ray tube has drift electron, and the existing a small amount of X ray of accelerator produces.Therefore,, in order to prevent that this small amount of X ray from entering scan channel, scanning monitor controls the mechanical shutter being positioned at before accelerator head for closed condition is to block X ray.
When this train arrives the Magnetic Sensor group S2 at 4 meters of, beam center O point left side, Identification of the Freight Train Car industrial computer basis is from the information computer car of Magnetic Sensor and the hook pan signal in other compartments.When the locomotive of this train has passed through beam center O point, scanning monitor, according to the hook pan signal of train, is controlled the electron gun high pressure that accelerator is opened accelerator, and accelerator starts bundle, and the mechanical shutter now blocking before head is also opened simultaneously.In order further to improve radiation proof safety, the condition of opening of mechanical shutter also requires locomotive head to have been detected at the light curtain in the exit of scan channel, and locomotive head has arrived the light curtain place of scan channel outlet.
Open shutter and be divided into two kinds of situations.A kind of situation is, for 1 locomotive, to carry out the computation delay time, and open immediately shutter according to the length of locomotive and speed after delay time.Another kind of situation is for 2 or more locomotive, according to the length of locomotive, quantity and speed, to carry out the computation delay time, and open immediately shutter after delay time.
The locomotive of take is above illustrated as example, and it is equally also applicable to passenger car.And, be to take the train that travels as example is illustrated on up direction above, the scanning process of the train travelling on down direction is also similar.
In above-mentioned train safe check system and corresponding scanning process, the mode of automatically dodge owing to having adopted, artificial and hardware is confirmed, has therefore greatly improved system reliability and checking efficiency.Even if operating personal maloperation, owing to there being the hardware of Magnetic Sensor and light curtain to confirm, can not scan locomotive and passenger car yet by mistake.And, due to the train information that has utilized Identification of the Freight Train Car industrial computer to provide, therefore do not need to confirm in advance train information with station, the place ahead.Meanwhile, Magnetic Sensor can adapt to various mal-conditions, and maintenance cost is very low, does not need service personnel scene on duty.
With reference to accompanying drawing, illustrate and described embodiments of the invention above, but the invention is not restricted to this.Obviously, those skilled in the art can carry out various modifications, modification and replacement and not depart from the spirit and scope of the present invention the present invention.Therefore, as long as within these modifications of the present invention, modification and replacement belong to the scope of claims of the present invention and equivalent technical solutions thereof, the present invention is also intended to comprise these modifications, modification and replacement.
Claims (20)
1. a train safe check system, is characterized in that comprising:
Magnetic Sensor group (102), its rail inner side being installed in the region of X ray beam center both sides certain limit is upper, and for gathering the signal of train wheel, each Magnetic Sensor group comprises three Magnetic Sensors;
Signal conditioning circuit case (104), for carrying out shaping and level translation to obtain regular sequences of pulsed signals to the magnetic sensor signal sequence of input;
Data collecting card (106), for according to the arrival of each pulse of the sequences of pulsed signals of input constantly, calculates speed and the wheelbase of train;
Identification of the Freight Train Car industrial computer (108), train speed and wheelbase information for basis from data collecting card (106), use known merogenesis flow process in system database to carry out merogenesis to wheelbase, and differentiate flow process by vehicle known in system database the wheelbase of merogenesis is carried out to the differentiation of car types, and the hook pan signal that calculates compartment;
Accelerator (120), for generation of and launch X ray, railway car is scanned;
Detector (122), produces electric signal for receiving through the X ray of railway car;
Mechanical shutter (116), it is installed in accelerator (120) above, for blocking the X ray of accelerator (120); And
Scanning monitor (110), car types and the hook pan signal of the train receiving from Identification of the Freight Train Car industrial computer (108) for basis, in scanning process, control the work of accelerator (120) and the opening and closing of mechanical shutter (116), to realize the control of dodging to the locomotive in train and passenger car.
2. train safe check system according to claim 1, characterized by further comprising:
A pair of light curtain (118), it is arranged on the exit of scan channel, for detection of whether having train to pass through in described exit,
Wherein, described scanning monitor (110) in scanning process, control opening of mechanical shutter (116) also will be according to the testing result of light curtain (118).
3. train safe check system according to claim 1 and 2, characterized by further comprising:
CCTV camera (112), it is installed near distance X ray beam center Magnetic Sensor group farthest, in described Magnetic Sensor group, detected train by time alert be confirmed whether as lorry, to determine whether to start scanning process.
4. train safe check system according to claim 1 and 2, characterized by further comprising:
Safety interlock system (114), for after confirming scanning, gets to closure state so that safety interlock system is ready by safety interlocking key.
5. train safe check system according to claim 1 and 2, is characterized in that:
Each Magnetic Sensor group comprises two work Magnetic Sensors and a redundancy Magnetic Sensor.
6. train safe check system according to claim 1 and 2, is characterized in that:
The first Magnetic Sensor group distance X ray beam center is 3.6-4 rice.
7. train safe check system according to claim 6, is characterized in that:
The second Magnetic Sensor group distance X ray beam center is 100 meters.
8. train safe check system according to claim 7, is characterized in that:
The 3rd Magnetic Sensor group distance X ray beam center is 300-500 rice.
9. train safe check system according to claim 1, is characterized in that:
Magnetic Sensor group comprises up Magnetic Sensor group and descending Magnetic Sensor group.
10. train safe check system according to claim 9, characterized by further comprising:
Whether two pairs of light curtains, wherein respectively arrange a pair of light curtain at the entrance and exit place of scan channel, for detecting respectively at described entrance and exit place, have train to pass through,
Wherein, described scanning monitor in scanning process, control opening of mechanical shutter also will be according to the testing result of light curtain.
11. 1 kinds of train safe inspection methods, is characterized in that comprising:
On rail inner side in the region of X ray beam center both sides certain limit, Magnetic Sensor group (102) is installed to gather the signal of train wheel, wherein each Magnetic Sensor group comprises three Magnetic Sensors;
Magnetic sensor signal sequence is carried out to shaping and level translation to obtain regular sequences of pulsed signals;
According to the arrival of each pulse in sequences of pulsed signals constantly, calculate speed and the wheelbase of train;
According to train speed and wheelbase information, use known merogenesis flow process in system database to carry out merogenesis to wheelbase, and differentiate flow process by vehicle known in system database the wheelbase of merogenesis is carried out to the differentiation of car types, and the hook pan signal that calculates compartment; And
According to the car types of train and hook pan signal, in scanning process, control the work of accelerator (120) and the opening and closing of mechanical shutter (116), to realize the control of dodging to the locomotive in train and passenger car,
Wherein, accelerator (120) produces and launches X ray, and railway car is scanned, and the X ray that passes railway car receives to produce electric signal by detector (122); Mechanical shutter (116) is installed in accelerator (120) above, for blocking the X ray of accelerator (120).
12. train safe inspection methods according to claim 11, characterized by further comprising:
Whether a pair of light curtain (118) detection that utilization is arranged on the exit of scan channel has train to pass through in described exit,
Wherein, in scanning process, controlling opening of mechanical shutter also will be according to the testing result of light curtain.
13. the train safe inspection method according to described in claim 11 or 12, characterized by further comprising:
Near distance X ray beam center Magnetic Sensor group farthest, CCTV camera (112) is installed, take described Magnetic Sensor group detected train by time alert be confirmed whether as lorry, to determine whether to start scanning process.
14. the train safe inspection method according to described in claim 11 or 12, characterized by further comprising:
After confirming scanning, by safety interlocking key, safety interlock system (114) is got to closure state so that safety interlock system is ready.
15. the train safe inspection method according to described in claim 11 or 12, is characterized in that:
Each Magnetic Sensor group comprises two work Magnetic Sensors and a redundancy Magnetic Sensor.
16. the train safe inspection method according to described in claim 11 or 12, is characterized in that:
The first Magnetic Sensor group distance X ray beam center is 3.6-4 rice.
17. train safe inspection methods according to claim 16, is characterized in that:
The second Magnetic Sensor group distance X ray beam center is 100 meters.
18. train safe inspection methods according to claim 17, is characterized in that:
The 3rd Magnetic Sensor group distance X ray beam center is 300-500 rice.
19. train safe inspection methods according to claim 11, is characterized in that:
Magnetic Sensor group comprises up Magnetic Sensor group and descending Magnetic Sensor group.
20. train safe inspection methods according to claim 19, characterized by further comprising:
At the entrance and exit place of scan channel, a pair of light curtain is respectively set, to detect respectively at described entrance and exit place, whether has train to pass through,
Wherein, in scanning process, controlling opening of mechanical shutter (116) also will be according to the testing result of light curtain.
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| CN201210364338.6A CN103661487A (en) | 2012-09-26 | 2012-09-26 | Train security check system and method with improved radiation protection function |
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