JP3622027B2 - Inappropriate treatment inspection system at waste treatment facility - Google Patents

Description

[0001]
[Industrial application fields]
In order to prevent non-combustible materials in the waste transported to the waste treatment facility, mainly unsuitable materials such as metal, from being supplied to the waste transport system to the treatment furnace, The present invention relates to an inspection system to be detected, and more particularly to an unsuitable processing inspection system in a waste disposal facility capable of inspecting each garbage truck using X-rays.
[0002]
[Prior art]
Today, most of the waste generated is collected in municipalities except for in-house disposal. Collection is performed using a garbage truck or a general truck depending on the type of garbage. For example, burnable garbage (paper, wood products, cotton, clothing, etc.), garbage (food waste, etc.) and resource garbage (plastic, glass bottles, metal scraps, etc.) are collected by garbage trucks and bulky garbage (home appliances, furniture, etc.) Are collected by general trucks.
[0003]
The collected garbage is sent to a municipal waste disposal facility where it is incinerated or crushed in a treatment furnace (incinerator, crushing furnace, etc.). In the incineration process, non-combustible materials mixed in the garbage, especially those made of metal, such as an iron gas cylinder, have a risk of explosion. In particular, when a fluidized bed furnace is used as an incinerator, it is not melted, and the outlet of the circulating fluidized sand at the bottom of the furnace is closed to stop the operation of the furnace or cause a failure. In addition, motors and large porcelains in bulky waste that have escaped removal prior to treatment also hinder smooth operation of the incinerator.
[0004]
Therefore, in the past, an operator visually inspected non-combustible materials such as metal cylinders and motors, large-sized porcelains, etc., or those containing such non-combustible materials (this is referred to as unsuitable processing materials) in the waste transport system in the processing facility. It was selected and excluded by.
[0005]
[Problems to be solved by the invention]
As described above, conventionally, workers have performed visual selection and removal of unsuitable materials that may cause explosions or interfere with the smooth operation of the furnace of the treatment facility, but this is not efficient. In addition, there are problems such as oversight, danger of workers, and a large work load, and there has been a demand for improvement in this regard.
[0006]
The present invention has been made in view of the above-mentioned demands, and is detected at a stage (immediately before the first stage of the waste treatment line) before being supplied to a waste transport system for transporting unsuitable materials such as metal objects to the processing furnace. Preventing it from being supplied to the waste transport system, reducing the risk and burden on workers who sort and eliminate unsuitable materials in the waste transport system, and ensuring smooth operation of the processing furnace. In addition, the present invention provides a system for inspecting unsuitable materials in a waste treatment facility that can achieve high efficiency as an inspection (rough inspection) at the initial stage of a waste treatment line, and can be used for various management on waste collection based on the inspection result. For the purpose.
[0007]
[Means for Solving the Problems]
The purpose of the above is to provide an inspection room having a structure in which a garbage truck can be put in and X-rays do not leak to the outside, position regulation means for regulating the position of the garbage truck when entering the examination room, This is achieved by providing an X-ray fluoroscopic image of the entire garbage storage unit by irradiating the entire garbage storage unit of the garbage collection vehicle, obtaining a X-ray fluoroscopic image of the entire garbage storage unit, and providing a garbage collection vehicle X-ray inspection means for displaying it.
[0008]
[Action]
The waste collection vehicle X-ray inspection means irradiates the entire waste storage part of the waste collection vehicle with X-rays in the inspection room located immediately before the waste transport system (immediately before the first stage of the waste treatment line) for transporting the waste to the treatment furnace. Then, an X-ray fluoroscopic image of the entire garbage storage unit is obtained and displayed on a monitor. Therefore, the operator can find an unsuitable object from the image displayed on the monitor. In other words, it is not necessary for the operator to directly select and remove unsuitable materials by visual inspection in the waste transport system, reducing the operator's risk and work load, and ensuring the smooth operation of the processing furnace. The
[0009]
Further, as described above, the waste collection vehicle X-ray inspection means obtains an X-ray fluoroscopic image of the entire waste storage portion of the waste collection vehicle, that is, inspects one garbage collection vehicle in a single inspection. Therefore, high efficiency can be achieved as an inspection (rough inspection) immediately before the first stage of the waste treatment line. Further, by providing the garbage collection vehicle X-ray inspection means with data writing means to a portable memory capable of writing and reading data, inspection result data as to whether or not an unsuitable object has been found is portable memory. It is possible to write various information on the garbage collection based on the inspection result.
[0010]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a view showing an embodiment of a system for inspecting unsuitable materials in a waste treatment facility according to the present invention from the entrance side of the inspection room, FIG. 2 is a partially cut left side view of FIG. 1, and FIG. It is a top view which shows a part.
[0011]
In each of these drawings, 1 is a garbage truck to be X-ray inspected, 2a and 2b are garbage pushing rotary plates of the garbage truck 1, 20 is a garbage storage part of the garbage truck 1, 19a is a bottom surface of the garbage storage part 20, Reference numeral 19 b denotes a ceiling surface of the dust storage unit 20, and reference numeral 25 denotes an image alignment lead mark positioned and arranged near the upper portion of the front end of the dust storage unit 20 by a support plate 26. The lead mark 25 for image alignment is used as a reference mark for image alignment in digital subtraction or image display described later. Arrow A indicates the reciprocating motion of the dust pushing rotary plate 2a, and arrow B indicates the rotation of the dust pushing rotary plate 2b. The dust pushing rotary plates 2a and 2b are timed so as not to collide with each other. Is driven, and the garbage thrown in from the rear part of the garbage truck 1 is pushed into the garbage container 20.
[0012]
3 is an examination room, 4 is an electric entrance shutter of the examination room 3, and 5 is an electric exit shutter. The examination room 3 has a structure in which the garbage truck 1 can enter and X-rays do not leak to the outside from any location with the shutters 4 and 5 closed.
[0013]
6 is an operation room, 15 is an X-ray inspection controller in the operation room 6, 16a is an X-ray image monitor provided on the controller 15, and 16b is a television monitor for monitoring provided on the X-ray image monitor 16a. is there. Reference numeral 17 denotes a lead glass transparent window provided between the examination room 3 and the operation room 6.
[0014]
7 is an overhead traveling rail, 8 is an X-ray generator, 9a and 9b are line sensors, 10a and 10b are line sensor support frames, 11 is a moving frame, 12 is an X-ray generator support frame, and 13 is an X-ray generator. Rotation support portion, 14 is a turning support portion, 18 is an X-ray emission port portion (collimator, shutter, various filter insertion mechanisms for iron calibration are arranged), 22 is a positioning vehicle stopper that can be electrically retracted, and 23 These are surveillance television cameras, which are provided in the examination room 3.
21 is a garbage collection vehicle height limit gate, 27 is a garbage collection vehicle height limit over alarm limit switch, and 28 is a garbage collection vehicle height over limit alarm buzzer.
[0015]
Here, the X-ray generator 8 emits fan-shaped X-rays having an X-ray irradiation angle θ that covers the entire cross-sectional area from the bottom surface 19a to the ceiling surface 19b of the garbage container 20 of the garbage truck 1. is there. The line sensors 9a and 9b attenuate the X-rays radiated from the X-ray generator 8 through the container iron plate and the collected garbage constituting the garbage storage unit 20 of the garbage truck 1 and attenuate the line sensors 9a, 9b, It is provided at a position facing the X-ray generator 8 with the garbage storage part 20 of the garbage truck 1 interposed therebetween so as to enter the light receiving part 9b. The line sensors 9a and 9b emit light from the fluorescent paper of the light receiving portion when X-rays are incident on the light receiving portions, and convert the electric signals into electric signals by photodiodes arranged for each pixel and output the signals. Here, the line sensors 9a and 9b are formed by arranging approximately 1000 photodiodes in a straight line in a vertical and horizontal direction in an L shape.
[0016]
The overhead traveling rail 7 and a drive source (not shown) move the X-ray generator 8 from one to the other in the front-rear direction of the garbage storage unit 20 of the garbage truck 1, here from the front to the rear, and store the garbage. X-ray scanning means for irradiating the entire unit 20 with X-rays is configured. As described above, the line sensors 9a and 9b are provided at positions facing the X-ray generator 8 with the dust storage unit 20 interposed therebetween, but are integrated with the X-ray generator 8 to the dust storage unit 20. The transmitted X-rays of the dust container 20 are detected continuously during the X-ray irradiation. Actually, the X-ray scan is started from the position where the image alignment lead mark 25 is also irradiated with X-rays.
[0017]
The moving frame 11 is interposed between the line sensor support frame 10b and the X-ray generator support frame 12, and in FIG. 1, the line sensor support frame 10b can move left and right and the X-ray generator support frame 12 can move up and down. Thus, the position of the X-ray generator 8 in the vertical and horizontal directions can be adjusted.
[0018]
The X-ray generator rotation support unit 13 is capable of adjusting the direction of the X-ray emission port 18 of the X-ray generator 8, in other words, the X-ray irradiation direction as indicated by an arrow α in FIG. 1. . The turning support unit 14 includes the X-ray generator 8, the line sensors 9a and 9b, the frames 10a, 10b, 11, and 12, and the X-ray generator rotation support unit 13 (X-ray generator 8 and line sensors 9a and 9b system). As shown by arrows β1 or β2 in FIG. 3, the X-ray transmission direction with respect to the waste container 20 can be adjusted by turning.
[0019]
An X-ray inspection controller 15 in the operation room 6 obtains an X-ray fluoroscopic image of the entire garbage storage unit 20 based on signals from the line sensors 9a and 9b, and displays it on the monitor 16a, which will be described later. Processing means).
[0020]
FIG. 4 is a block diagram showing a main part of a configuration example of the waste collection vehicle X-ray inspection means in the system of the present invention. In FIG. 4, 41 is a moving device (X-ray scanning means) for moving the X-ray generator 8 and line sensors 9a and 9b, 42 is a control device for each part of the inspection means, 43 is an image processing device, and 44 is image processing. A controller of the device 43, 45 an external storage device such as an optical disk, 46 a data reader / writer of the ID card 47, 48 a garbage storage hopper entrance door opening / closing device, and 49 a data reader of the ID card 47. Others are the same as those in FIGS.
[0021]
Next, the procedure of the inspection of the garbage truck 1 (detection of unsuitable processing items in the garbage storage unit 20) by the system of the present invention will be described.
[0022]
The garbage truck 1 that has entered the waste disposal facility after the collection of garbage and has been weighed together with the vehicle body enters the inspection room 3, but there is a garbage collection vehicle height restriction gate 21 in front of the inspection room entrance. The entry of the garbage truck 1 and the general truck (not shown) exceeding the gate 21 into the inspection room 3 is eliminated. Here, when a garbage truck with a height exceeding the gate 21 tries to pass through the gate 21, the limit switch 27 comes into contact with the upper part of the garbage truck 1 and turns on and the buzzer 28 sounds and enters the inspection room 3. The prohibition is notified to the driver of the garbage truck 1. The gate 21 also functions as a position restricting means for restricting the left-right position of the garbage truck 1 when it enters the examination room 3.
[0023]
The regular garbage truck 1 that does not exceed the height of the gate 21 passes through the gate 21, enters the examination room 3, and restricts the position of the garbage truck 1 in the front-rear direction when entering the examination room 3. To the position of the electrically-retractable car stop 22 and stops there. The driver of the garbage truck 1 gets out of the driver's seat and goes out of the examination room 3. Thereafter, the electric shutters 4 and 5 at the entrance and exit of the examination room 3 are closed.
[0024]
The driver gives the ID card 47 to the operator in the operation room 6 adjacent to the examination room 3. The ID card 47 is composed of a portable memory capable of storing and writing data, such as an IC memory card or a magnetic card, which is registered in advance as belonging to the garbage disposal facility, to which the garbage collection vehicle 1 belongs. The registration number at the garbage disposal facility, the automobile registration number of the garbage truck 1, the name of the trader to which the garbage truck 1 belongs, and the fact that it belongs to a specific garbage disposal facility, and is necessary for the management of the garbage truck 1 General data to be written.
[0025]
Further, the ID card 47 has data representing the type of the garbage truck 1, in other words, an empty state acquired in advance for the type of the garbage truck 1 (the garbage is stored in the garbage storage unit 20 at all). X-ray fluoroscopic image (mask image) of the entire waste storage unit 20 in the state of no waste), or the constituent materials of the waste storage unit 20 acquired in advance for each type of the garbage collection vehicle 1 and the total on the X-ray transmission path Calling data of an image having a uniform density corresponding to the attenuation value of X-rays corresponding to the thickness is written.
[0026]
Here, the vehicle type of the garbage truck 1 is the specification related to the X-ray inspection characteristics of the garbage container 20 of the garbage truck 1, that is, the material of the garbage container 20 and the total thickness of the material on the X-ray transmission path. The size of the dust storage unit 20, such as the attenuation value of the X-rays that pass through the dust storage unit 20 and the size of the image obtained as an X-ray fluoroscopic image. In the case of a structure, the difference in size can usually be referred to as a vehicle type.
[0027]
Next, the operator performs remote control operation of the surveillance TV camera 23 attached from the inside of the operation room 6 through the lead glass transparent window 17 and at an appropriate place, and observes the inside of the examination room 3 while observing the inside of the examination room 3. The X-ray generator 8 and the line sensors 9a and 9b and the swivel support portion 14 are moved in the direction of the arrow a1 along the ceiling rail 7 by a driving source (not shown), and the front end portion of the dust storage portion 20 is operated. Stop when the X-ray generator 8 and line sensors 9a, 9b system reach the corresponding location. This position is the X-ray scan start position. When image alignment is performed in image processing, an X-ray scan is started from a position where the image alignment lead mark 25 is also irradiated with X-rays.
[0028]
In the X-ray scan, the X-ray is turned ON (X-ray irradiation start) at the X-ray scan start position, and the X-ray generator 8 and the line sensors 9a and 9b are moved in the direction of arrow a2, that is, the body of the garbage collection vehicle 1. Is started by moving at a constant speed in the direction of the rear end of the garbage storage unit 20. When the X-ray scan starts, a signal is output from each pixel of the line sensors 9a and 9b. This signal changes corresponding to the X-ray transmission position of the dust container 20, and the signal from each pixel. By processing the signal with the image processing device 43, a two-dimensional X-ray fluoroscopic image is obtained.
[0029]
The X-ray generator 8 and the line sensors 9a and 9b are moved to the left end position of the dust pushing rotary plate 2a in FIG. 2, that is, the rear end portion of the dust storage portion 20 and stopped. A two-dimensional fluoroscopic image over 20 is obtained.
[0030]
During this time, the operator observes the X-ray fluoroscopic image of the garbage storage unit 20 displayed on the monitor 16a. If an object that appears to be unsuitable for processing, such as a gas cylinder, is found in the monitor image, that part is observed. Magnify the image with a limit and observe again. Further, the X-ray generator 8 and the line sensors 9a and 9b are returned to a position where an object that seems to be unsuitable for processing is found, and the X-ray generator 8 is moved in the direction of arrow c or b in FIG. As shown in FIG. 3, the turning support unit 14 is driven to turn the X-ray generator 8 and the line sensors 9a and 9b in the direction of the arrow β1 or β2, change the X-ray transmission direction, and again X-ray scan. Then, an X-ray fluoroscopic image of that portion is obtained and displayed on the monitor 16a, and the X-ray fluoroscopic image that seems to be unsuitable for processing is observed again in a different direction. If the presence of an unsuitable object in the garbage displayed on the monitor can be clearly determined at a glance, the above observation is not necessary. The image enlargement is performed by the image processing device 43.
[0031]
Here, in most cases, the garbage truck 1 is registered in each garbage disposal facility, and the garbage truck 1 that always carries garbage to the garbage disposal facility is specified. In the case of such a garbage collection vehicle 1, the ID card 47 calls the mask image of the vehicle type of the garbage collection vehicle 1 (an X-ray fluoroscopic image of the entire garbage storage unit 20 in an empty state), and the image processing device 43. By performing digital subtraction, it becomes possible to more accurately determine unsuitable objects.
[0032]
In the following, discrimination of unsuitable processing using digital subtraction will be described. First, a mask image for each vehicle type of the garbage truck 1 is obtained in advance by the same X-ray scan as described above, and each is stored in the external storage device 45. Calling data for calling the stored mask image is written in the ID card 47 attached to each garbage truck 1.
[0033]
The waste collection vehicle 1 that has entered the examination room 3 after completing the waste collection is scanned with X-rays as described above, and an X-ray fluoroscopic image of the entire waste storage unit 20 is obtained. At this time, the garbage collection vehicle 1 The mask image corresponding to the vehicle type is read out from the external storage device 45 and is superposed on the X-ray fluoroscopic image of the entire garbage storage unit 20 of the currently collected garbage truck 1 to subtract the common part (digital subtraction). ) To obtain a differential image and display it on the monitor 16a. This difference image is an image of only the dust in the dust storage unit 20, and it is possible to easily and accurately determine an unsuitable object.
[0034]
The garbage storage unit 20 of the garbage collection vehicle 1 is generally formed of a steel plate having a thickness of 2 to 5 mm in a container shape, and there is a reinforcing framework or the like. Therefore, in a simple X-ray fluoroscopic image of the garbage storage unit 20 There are many cases where images of unsuitable objects such as gas cylinders cannot be obtained as sufficient contrast images, and it is effective to distinguish unsuitable objects from images after subtracting digitally from the mask image (difference image). It is.
[0035]
In addition, the image of the uniform density | concentration corresponded to the attenuation value of the transmission X-ray according to the constituent material of the garbage storage part 20 previously acquired for the vehicle classification of the garbage truck 1, and the total thickness on the X-ray transmission path. Used instead of the mask image, subtraction is performed between the uniform density image and the X-ray fluoroscopic image of the entire garbage storage unit 20 of the garbage truck 1 currently inspected, and the difference image between them is displayed on the monitor. You may make it do.
[0036]
In this method, the same effect as that obtained by calibrating the constituent materials of the dust storage unit 20 (the iron storage calibration because the dust storage unit 20 is usually made of iron) can be obtained. Compared with the method using the system, the system configuration and the inspection procedure are simplified. Further, unlike the method using the mask image, even the reinforcing framework of the dust storage unit 20 cannot be completely erased, but an X-ray fluoroscopic image of dust having much better contrast than the air calibration can be obtained. .
[0037]
The calibration (usually iron calibration) by the plate made of the constituent material of the garbage container 20 of the garbage truck 1 to be inspected may be performed manually by the operator. That is, the operator is a plate made of a constituent material of the garbage storage unit 20 of the garbage truck 1 to be inspected, here, an iron plate, and has a total thickness on the X-ray transmission path (the waste storage unit 20 generates X-rays). Between the container 8 and the line sensors 9a and 9b, assuming that each wall surface of the dust storage portion 20 is formed with a uniform thickness, the inspection chamber 3 has a thickness that is twice the thickness of one wall surface). Before the collection vehicle 1 enters, it is inserted into the X-ray emission port 18 of the X-ray generator 8 and X-ray inspection is performed without the garbage collection vehicle 1. Next, the iron plate is removed from the X-ray emission port 18, and X-ray inspection (actual inspection) is performed in a state where the garbage truck 1 enters the inspection room 3.
[0038]
The image processing apparatus 43 performs the actual inspection with the transmission X-ray signal level obtained by X-ray irradiation with the iron plate inserted into the X-ray emission port 18 while the iron plate is removed from the X-ray emission port 18. Image processing is performed with a signal subtracted from the transmitted X-ray signal level obtained. As a result, iron calibration is performed, and an X-ray fluoroscopic image of high gain and high contrast dust is obtained.
[0039]
After the inspection is completed, the operator writes the inspection result on the ID card 47 attached to the garbage truck 1. For example, the data representing “OK” is written in the ID card 47 when no processing inappropriate item is found, and the data representing “NO” is written when found. The inspection result data written in the ID card 47 serves as an open / close key for a waste storage hopper entrance door (not shown) in the initial stage of the waste transport system (first stage of the waste processing line). Note that the inspection result is written into the ID card 47 by the data reading / writing device 46 provided in the garbage collection vehicle X-ray inspection means. The inspection result may be notified to the driver of the garbage truck 1 by voice, text display, lamp on / off, or the like.
[0040]
When the inspection is completed, the vehicle stop 22 is retracted from the traveling path of the garbage truck 1 and the electric shutter 5 at the exit of the inspection chamber 3 is opened. After receiving the return of the ID card 47 in which the inspection result data is written, the driver drives the garbage collection vehicle 1 that has been inspected, exits the inspection room 3 and moves to the waste storage hopper entrance, and the waste storage hopper The ID card 47 is inserted into a data reader 49 installed in the vicinity of the entrance door.
[0041]
The data reader 49 reads the inspection result data, and if it is data representing “OK”, it drives the waste storage hopper entrance door opening / closing device 48 to open the waste storage hopper entrance door. In this case, the garbage truck 1 can put the garbage into the garbage storage hopper (not shown) through the garbage storage hopper entrance door.
[0042]
When the inspection result data read by the data reader 49 is data representing “NO”, the waste storage hopper inlet door opening / closing device 48 is not driven, so the waste storage hopper entrance door is not opened, and the waste is put into the waste storage hopper ( (Supplying waste to the waste transport system) is prohibited. In this case, the garbage collection vehicle 1 lowers the garbage in a treatment inappropriate material removal pit (not shown) installed in front of the garbage storage hopper entrance door or the like.
[0043]
Selection and removal of unsuitable materials in the unsuitable material removal pit is performed by the worker visually, but this is more dangerous to the worker than the conventional method in which all the garbage trucks 1 carry waste. , The work load is drastically reduced, and the smooth operation of the processing furnace is ensured. The garbage after removal of the unsuitable material is dropped into the waste storage hopper and supplied to the waste transport system.
[0044]
In the above-described embodiment, the mask image and the uniform density image in the discrimination of unsuitable processing using digital subtraction are acquired for each type of garbage truck 1, but this may be acquired for each garbage truck. However, it is possible to perform accurate digital subtraction for each garbage collection vehicle 1, and it is possible to determine processing inappropriate materials with higher accuracy. On the other hand, since the number of recorded mask images and uniform density images increases, it is suitable when the storage capacity of the external storage device 45 is large.
[0045]
In addition, in the waste disposal facility, the garbage truck 1 that has entered the waste disposal facility after completing the waste collection is usually measured for its weight as described above, but this can be performed at the same time as the X-ray inspection. In order to achieve this, a vehicle weight scale may be installed on the floor of the examination room 3.
[0046]
In the above-described embodiment, the X-ray scan is performed by moving the X-ray generator 8 and the line sensors 9a and 9b from the front end side to the rear end side of the dust container 20 with the garbage collection vehicle 1 stopped. However, it may be performed in the opposite direction, or may be performed by moving the garbage storage unit 20 from the upper end (or lower end) side toward the lower end (or upper end) side. In addition, in a state where the X-ray generator 8 and the line sensors 9a and 9b are stopped, the garbage collection vehicle moving means, for example, a garbage collection vehicle moving carriage (not shown) on which the garbage collection vehicle 1 can be placed and moved is disposed. You may carry out by moving the collection vehicle 1.
[0047]
Furthermore, the position restricting means for restricting the position of the garbage truck 1 when entering the examination room 3 is also limited to the garbage truck height limiting gate 21 and the electrically-movable positioning vehicle stopper 22 in the above embodiment. Never happen. For example, as a position restricting means for restricting the position of the garbage truck 1 in the left-right direction, a curb indicated by reference numeral 24 in FIG.
[0048]
【The invention's effect】
As described above, according to the present invention, it is detected at the stage (immediately before the first stage of the waste treatment line) before being supplied to the waste transport system for transporting unsuitable materials such as metal objects to the processing furnace, and this is the waste transport. Preventing the supply of waste to the system, reducing the risk and burden on the workers who sort and eliminate unsuitable materials in the waste transport system, and ensuring the smooth operation of the treatment furnace, and the waste disposal There is an effect that high efficiency can be achieved as an initial inspection (rough inspection) of the line.
[0049]
In addition, by providing the garbage collection vehicle X-ray inspection means with data writing means to the portable memory that can be written and read, inspection result data as to whether or not an unsuitable object has been found is stored in the portable memory. Various types of garbage collection management based on inspection results, such as when garbage collection routes and areas of each garbage truck are identified, waste collection routes and areas where many unsuitable items are found It can be useful for elucidation of the waste, the collection frequency of each waste collection route, and the frequency of finding unsuitable materials for each region.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of the system of the present invention from the entrance side of an examination room.
FIG. 2 is a partially cut left side view of FIG. 1;
FIG. 3 is a top view showing a main part of FIG. 1;
FIG. 4 is a block diagram showing a main part of a configuration example of a waste collection vehicle X-ray inspection means in the system of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Garbage truck 2a, 2b Garbage pushing rotary plate 3 Inspection room 4 Inlet electric shutter 5 Outlet electric shutter 6 Operation room 7 Rail for ceiling travel 8 X-ray generator 9a, 9b Line sensor 10a, 10b Line sensor support frame 11 Moving frame 12 X-ray generator support frame 13 X-ray generator rotation support part 14 Rotation support part 15 X-ray inspection controller 16a X-ray image monitor 16b Television monitor for monitoring 17 Lead glass transparent window 18 X-ray emission port part 19a Garbage storage part The bottom surface 19b The ceiling surface 20 of the garbage storage part The garbage storage part 21 of the garbage truck The gate for limiting the height of the garbage truck 22 The electrically-retractable positioning stop 23 The monitoring TV camera 24 The curb 25 for position adjustment in the horizontal direction Lead mark 26 Support plate 27 Garbage truck height limit over alarm limit switch 28 Garbage truck height limit over alarm buzzer 4 Mobile device (X-ray scanning means)
42 Control Device for Each Part of Inspection Unit 43 Image Processing Device 44 Image Processing Device Controller 45 External Storage Device 46 ID Card Data Reading / Writing Device 47 ID Card 48 Garbage Storage Hopper Entrance Door Opening / Closing Device 49 ID Card Data Reader

Claims (12)

An inspection room in which a garbage truck can be entered and X-rays do not leak to the outside, a position restricting means for restricting the position of the garbage truck when entering the inspection room, and a garbage truck in the inspection room. A process in a waste disposal facility, comprising: a waste collection vehicle X-ray inspection means for irradiating X-rays over the entire waste storage unit to obtain an X-ray fluoroscopic image of the entire waste storage unit and displaying it on a monitor Inappropriate object inspection system. The garbage truck X-ray examination means includes an X-ray source for irradiating X-rays, the X-ray source or by moving the garbage truck that driving into the test chamber, over the entire dust storage portion of the garbage truck X X-ray scanning means for irradiating the radiation, and the X-ray source provided at a position facing the dust storage portion with the dust storage portion interposed therebetween. The X-ray sensor to detect, The image processing means which obtains the X-ray fluoroscopic image of the said whole waste storage part based on the signal from this X-ray sensor, and displays it on a monitor is provided. Inappropriate disposal inspection system at waste disposal facilities. The X-ray scanning means is an X-ray source / X-ray sensor moving means for moving the X-ray source and the X-ray sensor from one to the other in the front-rear direction or the vertical direction of the garbage storage portion of the garbage collection vehicle. A system for inspecting unsuitable materials in a waste disposal facility according to claim 2. An X-ray source that rotates the X-ray source and the X-ray sensor integrally so as to change the X-ray irradiation direction to the waste container at a desired position when desired and to obtain X-ray fluoroscopic images of the dust container from different directions A system for inspecting unsuitable materials in a waste treatment facility according to claim 3, further comprising X-ray sensor turning means. 3. The waste disposal facility according to claim 2, wherein the X-ray scanning unit is a garbage collection vehicle moving unit configured to move the garbage collection vehicle placed in the examination room from one side in the front-rear direction toward the other side. 4. Inappropriate processing inspection system. The image processing means is configured to select a garbage collection vehicle currently inspected from among a group of X-ray fluoroscopic images of the whole garbage storage unit in an empty state acquired in advance for each garbage collection vehicle or for each vehicle type of the garbage collection vehicle. Alternatively, an X-ray fluoroscopic image of the entire garbage storage unit in an empty state of the garbage truck is selected, and the selected X-ray fluoroscopic image and the X-ray of the entire garbage storage unit of the garbage truck currently inspected are selected. The system for inspecting unsuitable materials in a waste disposal facility according to any one of claims 2 to 5, wherein subtraction is performed between the fluoroscopic images and the difference images thereof are displayed on a monitor. The selection by the image processing means of the X-ray fluoroscopic image of the entire garbage storage section in the empty state of the garbage truck currently inspected or of the garbage truck is selected in advance in a portable memory attached to each garbage truck. 7. The system for inspecting unsuitable materials in a waste treatment facility according to claim 6, wherein the inspection is performed based on the read data from the data reading means for reading the vehicle-specific data or the vehicle type data of the written garbage collection vehicle. The image processing means corresponds to the attenuation value of transmitted X-rays corresponding to the constituent materials of the garbage storage unit acquired in advance for each garbage truck or for each type of garbage truck and the total thickness on the X-ray transmission path A uniform density image is selected, and subtraction is performed between the uniform density image and the X-ray fluoroscopic image of the entire garbage storage unit of the currently collected garbage truck, and the difference image between them is displayed on the monitor. The inadequate processing inspection system in the waste disposal facility according to any one of claims 2 to 5. Selection by the image processing means of an image having a uniform density corresponding to the attenuation value of transmitted X-rays according to the constituent materials of the garbage storage part of the garbage truck currently inspected and the total thickness on the X-ray transmission path, It is based on the read data from the data reading means for reading the vehicle-specific data of the garbage collection vehicle or the vehicle type data of the garbage collection vehicle previously written in the portable memory attached to each garbage collection vehicle. Item 9. A system for inspecting unsuitable materials at a waste disposal facility according to Item 8. The system for inspecting unsuitable materials in a waste disposal facility according to any one of claims 2 to 9, wherein the image processing means is capable of displaying an enlarged portion of an image displayed on a monitor. The garbage collection vehicle X-ray inspection means has a data writing means to a portable memory that can write and read data, and can write inspection result data as to whether or not an unsuitable object has been found in the portable memory. It is a processing unsuitable thing inspection system in the refuse disposal facility in any one of Claims 1-10 characterized by the above-mentioned. The garbage collection vehicle according to any one of claims 1 to 11, wherein the garbage truck is provided with a lead mark for image alignment at a predetermined position.

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