CN202837565U - Vehicle-mounted mobile radiation safety inspection system - Google Patents
Vehicle-mounted mobile radiation safety inspection system Download PDFInfo
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- CN202837565U CN202837565U CN 201220481265 CN201220481265U CN202837565U CN 202837565 U CN202837565 U CN 202837565U CN 201220481265 CN201220481265 CN 201220481265 CN 201220481265 U CN201220481265 U CN 201220481265U CN 202837565 U CN202837565 U CN 202837565U
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Abstract
The utility model discloses a vehicle-mounted mobile radiation safety inspection system. The system comprises: a radiation source; a scanning arm; a detector; an earth magnetic switch arranged on an entrance of a scanning channel through which an inspection object enters; a first light curtain switch arranged on the entrance of the scanning channel and used for inspecting whether the inspection object enters into or leaves from the scanning channel; a main beam detection switch arranged on the main beam position along the downstream direction of the scanning channel and used for inspecting whether the inspection object reaches to the main beam position or not; wherein, when the earth magnetic switch, the first light curtain switch and the main beam detection switch are triggered in turn, the radiation source is started to prepare the beam output operation.
Description
Technical field
The utility model relates to a kind of vehicle-mounted removable radiation safety check system, particularly a kind of vehicle-mounted removable radiation safety check system of drive sweep pattern.
Background technology
At present, along with the trade contacts of countries in the world sharply increase, and international security situation is increasingly serious, each state is all in the cargo safety inspection dynamics of constantly strengthening customs, aviation and frontier inspection bayonet socket, goods for example container radiation safety check system is subject to the first-selection of various countries customs, aviation and frontier inspection bayonet socket as the powerful mean of searching for smugglers and smuggling goods and searching for dangerous goods.
Vehicle-mounted removable radiation safety check system is a kind of novel goods radiation safety check system, is about to the radiation safety check system and is integrated on the removable vehicle.This equipment can be worked under two kinds of different patterns: 1. active scan mode, can be used as common vehicular product container and other items is carried out the active scan inspection, it is container and other items transfixion, the vehicle of carrying radiation safety check system is mobile after scanning car exhibition arm, to detected object, for example container and other items carries out scanography.2. drive sweep pattern, the fast inspection equipment of its general conduct uses: namely scan afterwards transfixion of car exhibition arm, and tested vehicle continuously passes through to check passage by driver driving, the radiation safety check system is by the tested information of vehicles of sensor sensing, and finish truck headstock (driver position) dodged automatically after, gated sweep equipment output line checks tested vehicle.
The fast inspection equipment of above-mentioned execution drive sweep pattern is based on fixed fast checking functions is integrated on the vehicle-mounted removable product and obtains, there is the very crucial problem of at least two aspects in it: at first, in fixed fast check system, adopt to be embedded in the underground geomagnetic induction coil of sense channel entrance; Be used for distinguishing people and vehicle.Only detecting is that vehicle arrives, and could start scanning process.But in vehicle mounted checking system, vehicle moves at any time, can only select the Ground magnetic switch that is installed on the vehicle to carry out above-mentioned measuring ability.The problem of coming with it is that Ground magnetic switch moves with car, cause the distortion of detection signal thereby can drift occur the zero point of its detection signal along with the variation in surrounding environment magnetic field, and lose measuring ability.
Secondly, at 2.5 meters of distance beam center detection light curtain switch is set in the fixed fast check system, it comprises the receiving end that the light curtain transmitting terminal that is arranged on scan channel one side and the opposite side that is arranged on scan channel are relative with described transmitting terminal.When tested truck headstock arrives place, this position of the switch, and during the light curtain between shading light curtain transmitting terminal and the light curtain receiving end relative with described transmitting terminal, system starts and the bundle signal, and starts from radiation source, goes out bundle such as X ray accelerator or X-ray machine etc.At this moment, the truck driver has just in time left the main beam position that radiation source sends X ray, is driver's safe avoidance position.In addition, for having prevented pocket-handkerchief, cause misoperation such as shading light curtains such as birds, the scraps of paper, the shape size that the light curtain parameter of above-mentioned light curtain switch can be defined to detect tested object is got rid of the false triggering of the radiation source that wisp causes.
But, characteristics based on vehicle-mounted removable radiation safety check system, there is not scan channel fixing, that set in advance in it, thereby can't adopt the light curtain transmitting terminal that is arranged on scan channel one side and the opposite side that the is arranged on scan channel receiving end relative with described transmitting terminal, that is to say, light curtain switch can't be selected, and the diffuse reflection switch that volume is little and be convenient to install can only be selected.Because being based on, the principle of work of diffuse reflection switch a little carries out trigger action, as long as the investigative range no matter article size has a point to enter into the diffuse reflection switch just can start trigger action, thereby the danger that exists the driver by mistake to be swept.
Correspondingly, be necessary to provide a kind of vehicle-mounted removable radiation safety check system, it can overcome at least one aspect of the problems referred to above of the prior art, thereby effectively realizes above-mentioned drive sweep pattern.
The utility model content
Given this, the purpose of this utility model is intended to solve at least one aspect of the above-mentioned problems in the prior art and defective.
Correspondingly, one of the purpose of this utility model be to provide a kind of can be effectively to entering into the detected object of scan channel, for example vehicle is identified, to realize the vehicle-mounted removable radiation safety check system of drive sweep operation.
Another purpose of the present utility model is to provide a kind of can realize effectively to detected object that for example the driver and conductor of vehicle effectively dodges, and prevents from it is carried out the vehicle-mounted removable radiation safety check system of maloperation.
An also purpose of the present utility model is to provide a kind of and can detected object be identified such as abnormality in scanning process such as vehicles, and then prevents that mistake from carrying out the vehicle-mounted removable radiation safety check system of scan operation.
According to an aspect of the present utility model, it provides a kind of vehicle-mounted removable radiation safety check system, and it comprises: be arranged on the radiation source on the removable vehicle; From the extended scan arm of described removable vehicle one side, wherein between described moving vehicle and scan arm, limit the sense channel of detected object by wherein; Detector, it is arranged on the described scan arm and is arranged to relative with described radiation source, the radiation ray that is wherein sent by described radiation source passes to be surveyed by described detector after the described detected object, it is characterized in that this system also comprises: be arranged on the Ground magnetic switch at least one of detector one side that detected object enters into the described side of the described vehicle in porch of scan channel and described scan arm; Be arranged on the first light curtain switch of the porch of described scan channel, whether light curtain transmitting terminal and the light curtain receiving end relative with described light curtain transmitting terminal that it comprises in detector one side of the described side that is arranged on described vehicle and described scan arm enter and leave described scan channel for detection of detected object; Be arranged on the main beam detector switch of the main beam position of described scan channel downstream direction, it comprises transmitting terminal and the light curtain receiving end relative with described light curtain transmitting terminal in detector one side of the described side that is arranged on described vehicle and described scan arm, whether arrive described main beam position for detection of detected object, wherein: when described Ground magnetic switch, the first light curtain switch and main beam detector switch all are triggered successively, start described radiation source and prepare out the bundle operation.
In technique scheme, also comprise in this vehicle-mounted removable radiation safety check system: be arranged on a described side of described vehicle and be positioned at the first diffuse reflection type switch in described main beam detector switch downstream, whether arrive this position to detect detected object; Be arranged on a described side of described vehicle and be positioned at the second diffuse reflection type switch of described the first diffuse reflection type switch, whether arrive this position to detect detected object, wherein: when described Ground magnetic switch, the first light curtain switch, main beam detector switch, when the first and second diffuse reflection type switches all are triggered successively, start described radiation source and go out the bundle operation.
In technique scheme, also comprise in this vehicle-mounted removable radiation safety check system: be arranged on a described side of described vehicle and be positioned at the 3rd diffuse reflection type switch of described the second diffuse reflection type switch downstream, whether arrive this position to detect detected object, wherein: after described the second diffuse reflection type switch is triggered after the schedule time, if described the 3rd diffuse reflection type switch is not triggered, judge that then detected object is in abnormality.
In technique scheme, also comprise in this vehicle-mounted removable radiation safety check system: be arranged on a described side of described vehicle and be positioned at the 4th diffuse reflection type switch of described the 3rd diffuse reflection type switch, whether arrive this position to detect detected object, wherein: after described the 3rd diffuse reflection type switch is triggered after the schedule time, if described the 4th diffuse reflection type switch is not triggered, judge that then detected object is in abnormality.
Preferably, after described the 4th diffuse reflection type switch is triggered the schedule time, do not leave described scan channel if described the first light curtain switch detects described detected object, judge that then detected object is in abnormality.
In technique scheme, when judging that described detected object is in abnormality, described radiation source stops the bundle operation.
Preferably, detector one side of a described side of described vehicle and described scan arm arranges respectively a Ground magnetic switch, and it is arranged to one of them work, another standby.
Preferably, described the 4th diffuse reflection type switch comprises the high-order diffuse reflection type switch and the low level diffuse reflection type switch that is positioned at the bottom of described vehicle at the top that is arranged on described vehicle.
Preferably, described the first diffuse reflection type switch is arranged at described scan channel distance about 2.2 meters position, downstream, described main beam position; Described the second diffuse reflection type switch is arranged at described scan channel distance about 2.5 meters position, downstream, described main beam position; Described the 3rd diffuse reflection type switch is arranged at described scan channel distance about 4 meters position, downstream, described main beam position; And described the 4th diffuse reflection type switch is arranged at the position of the about 7.5-8 rice in described scan channel distance downstream, described main beam position.
According on the other hand of the present utility model, the control method that it provides a kind of aforementioned vehicle-mounted removable radiation safety check system comprises step: start described Ground magnetic switch, the first light curtain switch and main beam detector switch and carry out the detection operation; And when detecting described Ground magnetic switch, the first light curtain switch and main beam detector switch and all be triggered successively, start described radiation source and prepare out the bundle operation.
In above-mentioned control method, described system also comprises: be arranged on a described side of described vehicle and be positioned at the first diffuse reflection type switch in described main beam detector switch downstream, whether arrive this position to detect detected object; Be arranged on a described side of described vehicle and be positioned at the second diffuse reflection type switch of described the first diffuse reflection type switch, whether arrive this position to detect detected object, wherein said method also comprises step: start the first and second diffuse reflection type switches and carry out the detection operation; And at described Ground magnetic switch, the first light curtain switch, main beam detector switch, when the first and second diffuse reflection type switches all are triggered successively, start described radiation source and go out the bundle operation.
In above-mentioned control method, described system also comprises: be arranged on a described side of described vehicle and be positioned at the 3rd diffuse reflection type switch of described the second diffuse reflection type switch downstream, whether arrive this position to detect detected object, wherein said method also comprises step: start the 3rd diffuse reflection type switch and carry out the detection operation; And after being triggered, described the second diffuse reflection type switch after the schedule time, if described the 3rd diffuse reflection type switch is not triggered, judges that then detected object is in abnormality.
In above-mentioned control method, described system also comprises: be arranged on a described side of described vehicle and be positioned at the 4th diffuse reflection type switch of described the 3rd diffuse reflection type switch, whether arrive this position to detect detected object, wherein said method also comprises step: start the 3rd diffuse reflection type switch and carry out the detection operation; And after being triggered, described the 3rd diffuse reflection type switch after the schedule time, if described the 4th diffuse reflection type switch is not triggered, judges that then detected object is in abnormality.
In above-mentioned control method, described system also comprises: be arranged on a described side of described vehicle and be positioned at the 4th diffuse reflection type switch of described the 3rd diffuse reflection type switch, whether arrive this position to detect detected object, wherein said method also comprises step: start the 4th diffuse reflection type switch and carry out the detection operation; And after being triggered, described the 3rd diffuse reflection type switch after the schedule time, if described the 4th diffuse reflection type switch is not triggered, judges that then detected object is in abnormality.
Further, after described the 4th diffuse reflection type switch is triggered the schedule time, do not leave described scan channel if described the first light curtain switch detects described detected object, judge that then detected object is in abnormality.
Further, when judging that described detected object is in abnormality, described radiation source stops the bundle operation.
In a kind of preferred embodiment, described at least one electromagnetic switch is arranged to carry out the self study step, and in the wherein said self study step, described at least one electromagnetic switch detects the electromagnetic flux value under the idle condition, and it is set to zero-bit.
Particularly, in above-mentioned self study step, do not have detected object to enter into scan channel if detect, then the set self check successfully indicates.
Particularly, in above-mentioned self study step, enter into scan channel if detect detected object, then interrupt the self study process, after the wait detected object leaves, restart described self study step.
Particularly, before starting the self study step, detect detected object and enter into scan channel, then do not start the self study process, after the wait detected object leaves, begin to start described self study step.
More specifically, described self study process was carried out repeatedly with cycle predetermined time, and the time of described self study is approximately 12 seconds.
Above-mentioned not specific embodiment of the present utility model has advantage and the effect of following one or more aspect at least:
In the technical solution adopted in the utility model, by adopting sensor arrangement reasonable in design, utilize the correct tested vehicle of differentiation of software and hardware and personnel, can guarantee the radiation safety of tested vehicle drivers.
In the technical solution adopted in the utility model, by adopting sensor arrangement reasonable in design, can in the situation that the driver and conductor does not get off, scan being scanned object, thereby both guarantee driver and conductor's safety, improve again the sweep velocity of system simultaneously.
In a kind of optimal technical scheme, it adopts 2 geomagnetic sensors, redundant mutually, remain standby of a job, and solve the Zero drift in main amplifier of geomagnetic sensor signal by self study, thereby can be exactly to detected object, for example vehicle and people distinguish, and have guaranteed the proper operation of vehicle-mounted removable radiation safety check system.
In a kind of technical scheme, at the distance radiation source, the position-scheduled distance of the main beam that gives off bundle of accelerator or X-ray machine for example, for example 1 diffuse reflection switch is respectively installed at 2.3 meters and 2.5 meters, in scanning process, only have these 2 switches to be triggered in order and all, think that just truck arrives out the bundle position, when entering the main beam position, truck tests the speed simultaneously, and speed is calculated the correctness that the time reach 2.5 meters judges triggering accordingly, designs simultaneously the control of self check scheme and flow process and solves irreflexive misoperation and be failure to actuate.
In technique scheme of the present utility model, accurate status when passing through scan channel in order to follow the tracks of tested vehicle, be convenient to search and find reason, can be at controller, for example write fast inspection process log logging program in the PLC unit program, recorded the state variation of each scanning switch, by these daily records, can very fastly find the trouble spot, judge scanning mode and undetected reason.
By adopting technique scheme, can accurately calculate tested car speed, Proper Match accelerator sweep frequency, and can correctly control radiation source for example accelerator or X-ray machine go out bundle and corresponding scan operation.
Description of drawings
Fig. 1 is the vertical view of arranging according to the sensor in the vehicle-mounted removable radiation safety check system of a kind of embodiment of the present utility model;
Fig. 2 is the rear view of arranging according to the sensor in the vehicle-mounted removable radiation safety check system of a kind of embodiment of the present utility model;
Fig. 3 is the side view of arranging according to the sensor in the vehicle-mounted removable radiation safety check system of a kind of embodiment of the present utility model; And
Fig. 4 is that explicitly magnetic switch carries out sequential synoptic diagram in self study, wherein Fig. 4 A is presented at the synoptic diagram that carries out self study under the scan channel idle condition, Fig. 4 B is presented at detected object in the self study process to enter synoptic diagram under the scan channel state, Fig. 4 C be presented at self study open before detected object enter synoptic diagram under the scan channel state.
Embodiment
Below by embodiment, and 1-3 by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.In instructions, same or analogous drawing reference numeral is indicated same or analogous parts.Following explanation to the utility model embodiment is intended to overall utility model design of the present utility model is made an explanation with reference to accompanying drawing, and not should be understood to a kind of restriction of the present utility model.
Referring to Fig. 1-3, it shows according to a kind of vehicle-mounted removable radiation safety check system 1 of the present utility model, and it comprises: be arranged on the radiation source 2 on the removable vehicle 10, for example accelerator; From the extended scan arm 3 of described removable vehicle 10 1 sides, shown in Fig. 2 and 3, this scan arm 3 comprises from the vehicle horizontal cantilever 3a that extends out and the vertical cantilever 3b that is connected with horizontal cantilever 3a, thus, limit detected object 20 between described moving vehicle 10 and scan arm 3, for example container truck passes through sense channel 4 wherein; Detector 5, the crystal detection array 30 among Fig. 2 for example, it is arranged on described scan arm, for example on horizontal cantilever 3a and the vertical cantilever 3b, and be arranged to relatively with described radiation source 2, the radiation ray that is wherein sent by described radiation source 2 is surveyed by described detector 3 after passing described detected object 20.The signal corresponding to the dosage of radiation ray that is detected that device 5 detects further gathers by the harvester (not shown), can reconstruct about detected object, the image of the mass density information of vehicle for example.
Shown in Fig. 1-2, this system 1 also comprises: be arranged at least one Ground magnetic switch G1 that detected object 20 enters into detector 5 one sides of the described side of the described vehicle 10 in porch of scan channel 4 and described scan arm 3, G2.As depicted in figs. 1 and 2, Ground magnetic switch G1, G2 are installed in respectively scan channel 4 entrance both sides, for detection of the detected object that enters scan channel 4 metal object such as vehicle whether.Preferably, in above-mentioned scan channel 4, a described side of vehicle 10 is provided with a Ground magnetic switch G1, and a side of the detector 5 of described scan arm 3 is provided with another Ground magnetic switch G2, and it consists of redundancy mutually, and is arranged to one of them work, another standby.
Referring to Fig. 1-3, the first light curtain switch LQ1 also is set in the porch of described scan channel 4, whether light curtain transmitting terminal LQ11 and the light curtain receiving end LQ12 relative with described light curtain transmitting terminal LQ11 that it comprises in detector 4 one sides of the described side that is arranged on described vehicle 10 and described scan arm 3 enter and leave described scan channel 4 for detection of detected object 20.Particularly, be blocked if the first light curtain switch LQ1 detects the light curtain, any one has signal among G1 and the G2 simultaneously, and then thinking has vehicle 10 to enter scan channel 4.Also be provided with main beam detector switch LQ2 in the main beam position of described scan channel 4 downstream directions, it comprises light curtain transmitting terminal LQ21 and the light curtain receiving end LQ22 relative with described light curtain transmitting terminal LQ21 in detector 4 one sides of the described side that is arranged on described vehicle 10 and described scan arm 3, whether arrive described main beam position for detection of detected object, wherein: as described Ground magnetic switch G1, when G2, the first light curtain switch LQ and main beam detector switch LQ2 are triggered successively, start described radiation source 2 and prepare out the bundle operation.In addition, main beam detector switch LQ2 can also with the first light curtain switch LQ1 combination with to detected object, for example truck 20 tests the speed first.In specific embodiment, main beam detector switch LQ2 can be light curtain switch, also can be photoelectricity switch.
Referring to Fig. 1 and Fig. 3, also comprise in this vehicle-mounted removable radiation safety check system 1: be arranged on a described side of described vehicle 10 and be positioned at the first diffuse reflection type switch S Q3 in described main beam detector switch LQ2 downstream, to detect detected object, for example truck 20, whether arrive this position; Be arranged on a described side of described vehicle 10 and be positioned at the second diffuse reflection type switch S Q4 of described the first diffuse reflection type switch S Q3, whether arrive this position with detected set truck 20, wherein: as described Ground magnetic switch G1 or G2, the first light curtain switch LQ1, main beam detector switch LQ2, the first and second diffuse reflection type switch S Q3, when SQ4 is triggered successively, starts described radiation source 2 and go out the bundle operation.
Referring to Fig. 1 and Fig. 3, also comprise in this vehicle-mounted removable radiation safety check system: be arranged on a described side of described vehicle 10 and be positioned at the 3rd diffuse reflection type switch S Q5 in described the second diffuse reflection type switch S Q4 downstream, whether arrive this position with detected set truck 20, wherein: after described the second diffuse reflection type switch S Q4 is triggered after the schedule time, if described the 3rd diffuse reflection type switch S Q5 is not triggered, judge that then truck 20 is in abnormality.
Referring to Fig. 1 and Fig. 3, this vehicle-mounted removable radiation safety check system 1 also comprises: be arranged on a described side of described vehicle 10 and be positioned at the 4th diffuse reflection type switch S Q6 or the SQ7 of described the 3rd diffuse reflection type switch S Q5, whether arrive this position with detected set truck 20.As shown in Figure 3, described the 4th diffuse reflection type switch comprises the high-order diffuse reflection type switch S Q7 at the top that is arranged on described vehicle and is positioned at the low level diffuse reflection type switch S Q6 of the bottom of described vehicle, but, the utility model is not limited in this, and for example the 4th diffuse reflection type switch can only comprise one of them.After being triggered, described the 3rd diffuse reflection type switch S Q5 after the schedule time, if described the 4th diffuse reflection type switch S Q6 or SQ7 are not triggered, judges that then truck 20 is in abnormality.
In another embodiment, after described the 4th diffuse reflection type switch S Q6 or SQ7 are triggered the schedule time, if detecting described truck 20, described the first light curtain switch LQ1 do not leave described scan channel 4, judge that then truck 20 is in abnormality.
In technique scheme, when judging described detected object, when for example truck 20 was in abnormality, described radiation source 2 stopped the bundle operation, to guarantee to be scanned object, for example took charge of passenger personnel's safety in the truck 20.
As shown in Figure 1, described the first diffuse reflection type switch S Q3 is arranged at described scan channel 4 distance about 2.2 meters positions, downstream, described main beam position; Described the second diffuse reflection type switch S Q4 is arranged at described scan channel 4 distance about 2.5 meters positions, downstream, described main beam position; Described the 3rd diffuse reflection type switch S Q5 is arranged at described scan channel 4 distance about 4 meters positions, downstream, described main beam position; And described the 4th diffuse reflection type switch S Q6 or SQ7 are arranged at the position of the about 7.5-8 rice in described scan channel distance downstream, described main beam position.
As shown in Figure 1, the first diffuse reflection type switch S Q3 is positioned at 2.2 meters positions behind the main beam, combine with the main beam detector switch LQ2 that is arranged at 2.5 meters, to detect detected object, for example truck 20 pass through sequentially whether correct.Whether the second diffuse reflection type switch S Q4 is positioned at 2.5 meters positions behind the main beam, arrive at for detection of tested truck 20 and dodge the position.Be blocked if detect the second diffuse reflection type switch S Q4, think then that tested truck 20 arrives to dodge the position, can start radiation source 2 and go out bundle.
Whether the 3rd diffuse reflection type switch S Q5 is positioned at and above-mentionedly dodges behind the position 1.5 meters, namely is arranged at described scan channel 4 distance about 4 meters positions, downstream, described main beam position, stop after going out bundle for detection of tested truck 20.The time-delay certain hour is not blocked if detect the 3rd diffuse reflection type switch S Q5 after going out bundle, then think bundle after vehicle in the second diffuse reflection type switch S Q4 and the 3rd diffuse reflection type switch S Q5, stop, enter the abnormality processing flow process.
The 4th diffuse reflection type switch S Q6 or SQ7: be positioned at scan channel 4 exits, two purposes are arranged: on the one hand, whether it stops for detection of tested truck 20.If the time-delay certain hour does not detect the 4th diffuse reflection type switch S Q6 or SQ7 is blocked, think that vehicle stops between the 3rd diffuse reflection type switch S Q5 and the 4th diffuse reflection type switch S Q6 or SQ7.On the other hand, whether leave for detection of tested truck 20.Time-delay certain hour after radiation source 2 goes out bundle, be released after the 4th diffuse reflection type switch S Q6 or SQ7 block if detect, and other sensors, comprise described Ground magnetic switch G1 or G2, the first light curtain switch LQ1, main beam detector switch LQ2, first, second, and third diffuse reflection type switch S Q3, SQ4, SQ5 are in not to be blocked and namely trigger state, think that then tested truck 20 has left scan channel 4, scanning process finishes, and allows next tested truck 20 to enter.
Below, 1-3 is to as follows according to the control method brief description of the utility model vehicle-mounted removable radiation safety check system on the other hand by reference to the accompanying drawings:
Step 1: detect vehicle and enter
Start described Ground magnetic switch G1, G2, the first light curtain switch LQ1 and main beam detector switch LQ2 and carry out the detection operation; Scanning car is at first by Ground magnetic switch G1, G2 and the first light curtain switch LQ1, and whether detect has vehicle to enter.As earth magnetism G1 or G2, the first light curtain switch LQ1, when main beam detector switch LQ2 has signal, think that vehicle arrives at the main beam position, add high pressure for the accelerator magnetron of radiation source 2, namely prepare out bundle work this moment, and do not go out bundle.
Step 2: begin bundle
At first when vehicle triggers the first light curtain switch LQ1 and main beam detector switch LQ2 (main beam position) successively, under the known prerequisite of the distance between above-mentioned two sensors, utilize above-mentioned two sensors to carry out the detected vehicle that enters into sense channel 4 testing the speed the first time, obtain the speed V1 of detected object.Then start first, second diffuse reflection type switch S Q3, SQ4 and carry out the detection operation; Detect tested vehicle 20 and after triggering the first light curtain switch LQ1, whether trigger successively main beam detector switch LQ2 (main beam position), the first diffuse reflection type switch S Q3 (2.2 meters) and the second diffuse reflection type switch S Q4 (2.5 meters); And at described Ground magnetic switch G1 or G2, the first light curtain switch LQ1, main beam detector switch LQ2, the first and second diffuse reflection type SQ3, when the SQ4 switch all is triggered successively, starts described radiation source 2 and go out the bundle operation.
In a kind of optimal way, radiation source can further be set, and the condition of bundle as follows: after detecting the second diffuse reflection type SQ4 and being triggered, if following condition satisfies simultaneously, add high pressure then can for the electron gun of radiation source 2, the control accelerator goes out bundle:
The first light curtain switch LQ1, main beam detector switch LQ2, the first and second diffuse reflection type SQ3, SQ4 are triggered successively;
The detection signal retention time of Ground magnetic switch G1 or G2 surpasses 1s, can prevent that thus Ground magnetic switch G1 or G2 are by false triggering;
The first and second diffuse reflection type SQ3, SQ4 is blocked simultaneously or trigger, and can get rid of thus wisp to the false triggering of diffuse reflection type SQ3, SQ4, and this is to detecting the detected object of large volume, and for example van container truck 20 is particularly useful;
The time interval that the first light curtain switch LQ1, main beam detector switch LQ2, the first and second diffuse reflection type SQ3, SQ4 are triggered is no more than setting value, can get rid of thus the situation of stopping between the first light curtain switch LQ1 and the second diffuse reflection type at detected vehicle.
In further embodiment, according to calculating the Vehicle Driving Cycle distance working time between the value V1 that tests the speed first, the first light curtain switch LQ1 to the second diffuse reflection type switch S Q4, in one embodiment, the acceleration that can set vehicle is 1m/s
2Or acceleration is zero, if calculating vehicle enters scan channel 4 and is equal to or greater than 2.5 meters apart from the distance of main beam position, getting rid of simultaneously has other objects to block the second diffuse reflection type switch S Q4 switch at 2.5 meters at vehicle through the light backstage, then can drive radiation source 2 and go out the bundle operation.
After the second diffuse reflection type switch S Q4 is triggered, utilize the time interval between the first light curtain switch LQ1 to the second diffuse reflection type switch S Q4 to calculate tested car speed, in a kind of optimal way, what can also calculate the radiation source that is complementary with tested car speed goes out to restraint frequency, correspondingly, to radiation source 2 for example accelerator go out to restraint frequency setting.Do not occur any unusually if enter beginning from vehicle 20, then give the electron gun of radiation source 2 bundle that adds high pressure out, and then begin to gather image.
Step 3: judge abnormality and stop bundle
Describe below in conjunction with the step that Fig. 1 enters to the system in the utility model that abnormality is judged and start-up system stops bundle.
A: utilize the 3rd diffuse reflection type switch S Q5 to judge that whether tested vehicle 20 goes out in the bundle process 2.5 meters-4 meters interval parkings.If go out not detect the 3rd diffuse reflection type switch S Q5 (4 meters) behind bundle the second diffuse reflection type switch S Q4 (2.5 meters) time-delay certain hour and be blocked, can think that then tested vehicle stops in 2.5 meters to 4 meters interval, enters abnormality.
B: utilize the 4th diffuse reflection type switch S Q6 and/or SQ7 to judge that whether tested vehicle goes out in the bundle process in the interval parking of 4 meters exit positions.Go out in the bundle process, if after arriving at the 3rd diffuse reflection type switch S Q5 (4 meters), the time-delay certain hour does not detect outlet the 4th diffuse reflection type switch S Q6 and/or SQ7 is blocked, and thinks that then tested vehicle stops between outlet area at 4 meters, enters abnormality.
C: further, after described the 4th diffuse reflection type switch S Q6 and/or SQ7 are triggered the schedule time, if described the first light curtain switch LQ1 does not detect described detected object, for example truck 20 leaves described scan channel 4, then judge detected object, for example truck 20 is in abnormality.Particularly, go out in the bundle process, vehicle arrives at (headstock arrival exit) behind the 4th diffuse reflection type switch S Q6 and/or the SQ7, and the time-delay certain hour does not detect blocking of LQ1 and is released (being that the tailstock leaves main beam), think that tested vehicle stops, and enters unusual flow process behind arrival exit.
D: whether reach the maximum spill time that allows, if spill time is overtime, enter unusual flow process.
Further, when judging described detected object, when for example truck 20 was in abnormality, described radiation source 2 stopped the bundle operation.
Below in conjunction with Fig. 4 the self study process of Ground magnetic switch G1 or G2 is described.
For guaranteeing the normal operation of geomagnetic sensor, generally be to transfer the drive sweep pattern to from active scan mode, the vertical cantilever of scan arm launches, shift checkout area and all will carry out self study, as long as Ground magnetic switch G1 or G2 normally just can guarantee that normal scanning process goes on, if but all occured to drift about then must stop again self study of flow process the zero point of 2 Ground magnetic switch G1 or G2.Fig. 4 A-4C has illustrated 3 kinds of situations in self study.
Shown in Fig. 4 A-4C, described at least one electromagnetic switch G1 or G2 are arranged to carry out the self study step, and more specifically, described self study process was carried out repeatedly with cycle predetermined time, and the time of described self study is approximately 12 seconds.Shown in Fig. 4 A, in the described self study step, described at least one electromagnetic switch G1 or G2 detect the electromagnetic flux value under the idle condition, and it is set to zero-bit.Particularly, in the self study process of 12s, if scan channel keeps idle condition always, all photoelectric sensor LQ1 to SQ7 and the equal no signal of another Ground magnetic switch, earth magnetism begins the self study process, and the self study process finishes after 12 seconds, and the set self check successfully indicates.
Shown in Fig. 4 B, particularly, in above-mentioned self study step, if detect detected object, for example truck 20 enters into scan channel 4, then interrupts the self study process, wait for detected object, after for example truck 20 leaves, restart described self study step.
Shown in Fig. 4 C, particularly, before starting the self study step, detect detected object, for example truck 20 enters into scan channel 4, does not then start the self study process, wait for detected object, after for example truck 20 leaves, begin to start described self study step.
Although some embodiment of this overall utility model design are shown and explanation, those skilled in the art will appreciate that, in the situation of the principle that does not deviate from this overall utility model design and spirit, can make a change these embodiment, scope of the present utility model limits with claim and their equivalent.
Claims (10)
1. vehicle-mounted removable radiation safety check system, it comprises:
Be arranged on the radiation source on the removable vehicle;
From the extended scan arm of described removable vehicle one side, wherein between described moving vehicle and scan arm, limit the sense channel of detected object by wherein;
Detector, it is arranged on the described scan arm and is arranged to relatively with described radiation source, and the radiation ray that is wherein sent by described radiation source passes to be surveyed by described detector after the described detected object, it is characterized in that this system also comprises:
Be arranged on the Ground magnetic switch at least one of detector one side that detected object enters into the described side of the described vehicle in porch of scan channel and described scan arm;
Be arranged on the first light curtain switch of the porch of described scan channel, whether light curtain transmitting terminal and the light curtain receiving end relative with described light curtain transmitting terminal that it comprises in detector one side of the described side that is arranged on described vehicle and described scan arm enter and leave described scan channel for detection of detected object;
Be arranged on the main beam detector switch of the main beam position of described scan channel downstream direction, it comprises transmitting terminal and the light curtain receiving end relative with described light curtain transmitting terminal in detector one side of the described side that is arranged on described vehicle and described scan arm, whether arrive described main beam position for detection of detected object, wherein:
When described Ground magnetic switch, the first light curtain switch and main beam detector switch all are triggered successively, start described radiation source and prepare out the bundle operation.
2. vehicle-mounted removable radiation safety check system according to claim 1 characterized by further comprising:
Be arranged on a described side of described vehicle and be positioned at the first diffuse reflection type switch in described main beam detector switch downstream, whether arrive this position to detect detected object;
Be arranged on a described side of described vehicle and be positioned at the second diffuse reflection type switch of described the first diffuse reflection type switch, whether arrive this position to detect detected object, wherein:
When described Ground magnetic switch, the first light curtain switch, main beam detector switch, when the first and second diffuse reflection type switches all are triggered successively, start described radiation source and go out the bundle operation.
3. vehicle-mounted removable radiation safety check system according to claim 2 characterized by further comprising:
Be arranged on a described side of described vehicle and be positioned at the 3rd diffuse reflection type switch of described the second diffuse reflection type switch downstream, whether arrive this position to detect detected object, wherein:
After being triggered, described the second diffuse reflection type switch after the schedule time, if described the 3rd diffuse reflection type switch is not triggered, judges that then detected object is in abnormality.
4. vehicle-mounted removable radiation safety check system according to claim 3 characterized by further comprising:
Be arranged on a described side of described vehicle and be positioned at the 4th diffuse reflection type switch of described the 3rd diffuse reflection type switch, whether arrive this position to detect detected object, wherein:
After being triggered, described the 3rd diffuse reflection type switch after the schedule time, if described the 4th diffuse reflection type switch is not triggered, judges that then detected object is in abnormality.
5. vehicle-mounted removable radiation safety check system according to claim 4 is characterized in that:
After described the 4th diffuse reflection type switch is triggered the schedule time, if detecting described detected object, described the first light curtain switch do not leave described scan channel, judge that then detected object is in abnormality.
6. vehicle-mounted removable radiation safety check system according to claim 5 is characterized in that:
After described the 4th diffuse reflection type switch is triggered the schedule time, if detecting described detected object, described the first light curtain switch do not leave described scan channel, judge that then detected object is in abnormality.
7. any one described vehicle-mounted removable radiation safety check system according to claim 3-6 is characterized in that:
When judging that described detected object is in abnormality, described radiation source stops the bundle operation.
8. any one described vehicle-mounted removable radiation safety check system according to claim 1-6 is characterized in that:
Detector one side of a described side of described vehicle and described scan arm arranges respectively a Ground magnetic switch, and it is arranged to one of them work, another standby.
9. any one described vehicle-mounted removable radiation safety check system according to claim 4-6 is characterized in that:
Described the 4th diffuse reflection type switch comprises the high-order diffuse reflection type switch at the top that is arranged on described vehicle and is positioned at the low level diffuse reflection type switch of the bottom of described vehicle.
10. any one described vehicle-mounted removable radiation safety check system according to claim 4-6 is characterized in that:
Described the first diffuse reflection type switch is arranged at described scan channel distance about 2.2 meters position, downstream, described main beam position;
Described the second diffuse reflection type switch is arranged at described scan channel distance about 2.5 meters position, downstream, described main beam position;
Described the 3rd diffuse reflection type switch is arranged at described scan channel distance about 4 meters position, downstream, described main beam position; And
Described the 4th diffuse reflection type switch is arranged at the position of the about 7.5-8 rice in described scan channel distance downstream, described main beam position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220481265 CN202837565U (en) | 2012-09-19 | 2012-09-19 | Vehicle-mounted mobile radiation safety inspection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220481265 CN202837565U (en) | 2012-09-19 | 2012-09-19 | Vehicle-mounted mobile radiation safety inspection system |
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| CN202837565U true CN202837565U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220481265 Withdrawn - After Issue CN202837565U (en) | 2012-09-19 | 2012-09-19 | Vehicle-mounted mobile radiation safety inspection system |
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Cited By (5)
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| CN103675930A (en) * | 2012-09-19 | 2014-03-26 | 同方威视技术股份有限公司 | Vehicle-mounted mobile radiation safety inspection system and control method thereof |
| CN104244561A (en) * | 2013-06-21 | 2014-12-24 | 同方威视技术股份有限公司 | Standing wave electron linear accelerator and container/vehicle inspection system |
| CN106124533A (en) * | 2016-08-30 | 2016-11-16 | 北京华力兴科技发展有限责任公司 | Rapid detection system |
| CN106772650A (en) * | 2016-12-26 | 2017-05-31 | 同方威视技术股份有限公司 | Portable explosive transmission imaging device |
| WO2020134127A1 (en) * | 2018-12-28 | 2020-07-02 | 同方威视技术股份有限公司 | Security inspection device and security inspection method |
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2012
- 2012-09-19 CN CN 201220481265 patent/CN202837565U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103675930A (en) * | 2012-09-19 | 2014-03-26 | 同方威视技术股份有限公司 | Vehicle-mounted mobile radiation safety inspection system and control method thereof |
| CN103675930B (en) * | 2012-09-19 | 2016-09-28 | 同方威视技术股份有限公司 | A kind of vehicle-mounted removable radiation safety inspection system and control method thereof |
| CN104244561A (en) * | 2013-06-21 | 2014-12-24 | 同方威视技术股份有限公司 | Standing wave electron linear accelerator and container/vehicle inspection system |
| US10129971B2 (en) | 2013-06-21 | 2018-11-13 | Nuctech Company Limited | Standing wave electron linear accelerator and container/vehicle inspection system |
| CN106124533A (en) * | 2016-08-30 | 2016-11-16 | 北京华力兴科技发展有限责任公司 | Rapid detection system |
| CN106772650A (en) * | 2016-12-26 | 2017-05-31 | 同方威视技术股份有限公司 | Portable explosive transmission imaging device |
| WO2020134127A1 (en) * | 2018-12-28 | 2020-07-02 | 同方威视技术股份有限公司 | Security inspection device and security inspection method |
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