WO2022028155A1 - 基于横波的有价证券微波处理装置 - Google Patents

基于横波的有价证券微波处理装置 Download PDF

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Publication number
WO2022028155A1
WO2022028155A1 PCT/CN2021/103410 CN2021103410W WO2022028155A1 WO 2022028155 A1 WO2022028155 A1 WO 2022028155A1 CN 2021103410 W CN2021103410 W CN 2021103410W WO 2022028155 A1 WO2022028155 A1 WO 2022028155A1
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Prior art keywords
microwave
securities
module
processing device
microwaves
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PCT/CN2021/103410
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English (en)
French (fr)
Inventor
廖俊宁
王刚
孙志峰
鞠健
杜良缘
Original Assignee
中钞长城金融设备控股有限公司
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Priority claimed from CN202010780400.4A external-priority patent/CN111643695B/zh
Priority claimed from CN202110045558.1A external-priority patent/CN112773920B/zh
Application filed by 中钞长城金融设备控股有限公司 filed Critical 中钞长城金融设备控股有限公司
Publication of WO2022028155A1 publication Critical patent/WO2022028155A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultraviolet radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/12—Microwaves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/24—Apparatus using programmed or automatic operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/26—Accessories or devices or components used for biocidal treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/80—Apparatus for specific applications

Definitions

  • the invention relates to a microwave processing device for securities, which is used for sterilizing viruses, bacteria and the like attached to the surface of the securities.
  • a large number of bacteria, viruses and parasites are attached to the securities in circulation. Once these bacteria, viruses and parasites are transmitted, infected or parasitized in the human body, the adverse effects on human health are very large. Therefore, it is very necessary to disinfect and sterilize the securities. Especially for some viruses that are highly contagious and cause great damage to the body, it is of positive significance to prevent the spread of viruses and bacteria through disinfection and sterilization devices.
  • microwave disinfection and sterilization has a good sterilization effect on viruses and bacteria attached to securities because of its strong penetrating power.
  • microwave is a kind of electromagnetic wave.
  • the metal conductor will generate electromagnetic induction, and the electric charge will be redistributed on the surface of the metal conductor, thereby generating a potential difference. If the potential difference is large enough, it can break down the air and ionize the air to produce tip discharges, sparks, or even arcs.
  • optical characteristic materials, magnetic characteristic materials and electrical characteristic materials will be added. The direct use of microwave technology to sterilize these securities will damage their printing features and machine-readable anti-counterfeiting performance, and in severe cases will lead to carbonization or burning of the securities.
  • the technical problem to be solved by the present invention is to provide a microwave processing device for securities based on shear waves.
  • a microwave processing device for securities based on shear waves including a microwave generator module and a microwave working cavity;
  • the microwave working cavity includes at least one accommodating area, and the accommodating area is used to place the securities;
  • the accommodating area includes a bearing surface, and the bearing surface is used to carry the valuable document in a state parallel to the ticket surface of the negotiable document. securities, the bearing surface is perpendicular to the thickness direction of the securities;
  • the microwave generator module is used to generate microwaves, adjust the microwaves into plane electromagnetic waves using beamforming technology, and then use a structure made of microwave-impermeable materials to eliminate the longitudinal components of its electric field and/or magnetic field to form a non-mixing mode transverse waves; then, the microwaves enter the microwave working cavity from one or more sides and propagate, and the microwaves have no magnetic field component in the direction perpendicular to the bearing surface.
  • the microwave is a transverse electromagnetic wave
  • the propagation direction of the electromagnetic wave is perpendicular to the bearing surface of the accommodating area.
  • the propagation direction of the microwaves is perpendicular to the bearing surface of the accommodating area.
  • the propagation direction of the microwaves is parallel to the bearing surface of the accommodating area.
  • the magnetic field component of the microwave is parallel to the bearing surface of the accommodating area, and the electric field component of the microwave is perpendicular to the bearing surface of the accommodating area.
  • both the electric field component and the magnetic field component of the microwave are parallel to the bearing surface of the accommodating area.
  • the bearing surface is arranged horizontally for carrying the securities horizontally; alternatively, the bearing surface is arranged vertically for carrying the securities vertically.
  • a method for controlling a microwave processing device for securities including the following steps:
  • step S3 according to the quantity of negotiable securities obtained in step S2, determine the output power and sterilization duration of the microwave power module;
  • the microwave generator module generates microwaves under the driving of the microwave power module
  • step S5 in the process of microwave sterilization, collect infrared images of the stacks of securities in real time; calculate the current temperature value of the securities according to the infrared images, and calculate the current temperature value of the securities according to the difference between the current temperature value of the securities and the preset upper temperature threshold Comparing the results, the microwave sterilization process is controlled; within the sterilization duration determined in step S3, when the current temperature value of the securities is lower than the preset upper temperature threshold, the microwave sterilization is continued with the output power determined in step S3, Otherwise, stop microwave sterilization in advance.
  • a control system for a microwave processing device for securities comprising: a control module, an image detection module and a microwave power module connected to the control module, and a microwave power module connected to the microwave power module generator module;
  • the detection module is used for acquiring visible light images and infrared images of the stacks of securities placed in the microwave working cavity;
  • the microwave power module is used to output power to the microwave generator module
  • the microwave generator module is powered by a microwave power module to generate a microwave signal source
  • the control module is used to calculate the number of securities according to the visible light image of the stack of securities, and determine the output power and sterilization duration of the microwave power module according to the number of securities, and then control the microwave power module to send the
  • the microwave generator module outputs power, and the microwave generator module generates a microwave signal source with suitable energy
  • the control module is also used to calculate the current temperature value of the securities stack according to the infrared image of the securities stack, when the current temperature value of the securities stack is lower than the preset upper temperature threshold, the microwave power module Output power to the microwave generator module with the selected output power until the sterilization duration ends; when the current temperature value of the securities stack is not lower than the preset upper temperature threshold, the microwave generator module stops generating microwaves.
  • the microwave processing device for securities based on shear waves propagates the microwaves as shear waves in a non-mixed mode in the accommodating area, and makes the microwaves have no magnetic field component in the direction perpendicular to the bearing surface, that is, makes valuable
  • magnetic characteristic materials, and electrical characteristic materials, etc. produce tip discharge, heat generation and even fire in the microwave environment.
  • the above-mentioned microwave processing device for negotiable securities can realize microwave sterilization and sterilization of negotiable securities, and will not damage the printing features and machine-readable anti-counterfeiting performance of negotiable securities.
  • FIG. 1 is a schematic structural diagram of a microwave processing device for securities based on shear waves provided by an embodiment of the present invention
  • 2A to 2H are schematic diagrams of the propagation direction of the microwave when the microwave is a TEM mode
  • 3A to 3D are schematic diagrams of the propagation direction of the microwave when the microwave is in the TM mode
  • 4A to 4D are schematic diagrams of the propagation direction of the microwave when the microwave is in the TE mode
  • FIG. 5 is a flowchart of a control method of a microwave processing device for securities provided by an embodiment of the present invention
  • FIG. 6 is a block diagram of a control system of a microwave processing device for securities provided by an embodiment of the present invention.
  • Fig. 7 is the sectional structure diagram of the securities microwave processing device using the control system shown in Fig. 6;
  • FIG. 8 is a perspective structural view of a securities microwave processing apparatus using the control system shown in FIG. 6 .
  • the shear wave-based securities microwave processing apparatus includes a microwave working cavity 1 and at least one microwave generator module.
  • the microwave working cavity 1 includes at least one receiving area 10 for placing the document of value 2 .
  • the accommodating area 10 includes a bearing surface 15 for carrying a single or a plurality of valuable documents 2 in a state parallel to (may be substantially parallel to) the face of the valued document 2, and the thickness of the bearing surface 15 and the valued document 2
  • the direction (a direction as shown in Figure 2 and Figure 3) is vertical.
  • the bearing surface 15 is arranged horizontally, the bearing surface 15 is used to carry the securities 2 horizontally (which may be substantially horizontal), and the securities 2 are placed horizontally on the bearing surface; or, when the bearing surface 15 is arranged vertically, the bearing surface 15 is used to carry the value document 2 vertically (which may be substantially vertical), the value document 2 leaning against the carrying surface 15 .
  • the bearing surface 15 is substantially parallel to the face of the negotiable document 2, and may have a small inclination angle.
  • the microwave generator module includes a microwave generator 30, a power source 31 and a waveguide 32.
  • the power source 31 supplies power to the microwave generator 30, and the microwave generator 31 is used to generate microwaves.
  • the microwaves are conducted through the waveguide 32 from one side of the microwave working cavity 1 or multiple sides into the microwave working cavity 1 .
  • the microwaves can enter the microwave working cavity 1 from the left side of the microwave working cavity 1, and of course, the microwaves can also enter the microwave working cavity 1 from other directions (for example, any of the top surface, bottom surface, right side, front, and rear). direction) or enter the microwave working cavity 1 from multiple directions at the same time.
  • the microwave is in the accommodating area 10 in a non-mixed mode (such as transverse electromagnetic wave, transverse electric wave or transverse magnetic wave), and the microwave has no magnetic field component in the direction perpendicular to the bearing surface 15, that is, there is no magnetic field component in the thickness direction (a direction) of the securities.
  • a non-mixed mode such as transverse electromagnetic wave, transverse electric wave or transverse magnetic wave
  • the microwave has no magnetic field component in the direction perpendicular to the bearing surface 15, that is, there is no magnetic field component in the thickness direction (a direction) of the securities.
  • the optical characteristic materials, magnetic characteristic materials and electrical characteristic materials in the securities do not cut the magnetic field lines, so as to avoid the induced electromotive force on the securities, and the optical characteristic materials, magnetic characteristic materials and electrical characteristic materials can be completely avoided.
  • Characteristic materials, etc. generate tip discharge, heat generation and even fire in the microwave environment.
  • the above-mentioned microwave processing device for securities based on transverse waves can realize microwave sterilization and sterilization of securities without damaging the printing features of the coupons and the machine-readable anti-counterfeiting performance.
  • FIGS 2A to 4D taking securities 2 horizontally as an example, a three-dimensional Cartesian coordinate system is established, and the transmission directions and electric field components E and The distribution of the magnetic field component H is illustrated.
  • the longitudinal direction and the width direction of the securities 2 are taken as the X axis and the Y axis, respectively, and the thickness direction of the securities 2 is taken as the Z axis.
  • the propagation direction of the microwave is parallel to the Z axis, which can be positive or negative; at this time, the propagation direction of the microwave It is perpendicular to the bearing surface 15 of the receiving area 10, that is, the propagation direction of the microwaves is parallel to the thickness direction (a direction) of the document.
  • the electric field component E and the magnetic field component H are distributed in a plane parallel to the surface of the securities, and the electric field component Both E and the magnetic field component H are parallel to the receiving area bearing surface 15 .
  • the directions of the electric field component E and the magnetic field component H are not limited to the directions shown in FIGS. 2A to 2H , and the figures only illustrate the directions of typical magnetic field components and electric field components as examples.
  • the electric field component and magnetic field component of the microwave in the TEM mode are illustrated by taking the propagation direction of the microwave in the TEM mode as the positive Z-axis as an example; when the propagation direction of the microwave in the TEM mode is the Z axis When the axis is in the negative direction, the electric field component and the magnetic field component are similar, and will not be repeated here.
  • the microwave when the microwave is a transverse magnetic wave (TM mode, E wave), the propagation direction of the microwave is parallel to the Z axis, which can be positive or negative; at this time, the propagation direction of the microwave is the same as
  • the bearing surface 15 of the accommodating area 10 is vertical, that is, the propagation direction of the microwaves is parallel to the thickness direction (a direction) of the document.
  • the electric field component E when the propagation direction of the microwave is parallel to the thickness direction (a direction) of the securities, the electric field component E is parallel to the thickness direction of the securities (that is, the electric field component E is parallel to the bearing surface 15 of the accommodating area).
  • the magnetic field component H is distributed in a plane parallel to the face of the securities (that is, the magnetic field component H is parallel to the receiving area bearing surface 15); the direction of the magnetic field component H is not limited to the direction shown in the figure, only the The directions of typical magnetic field components are illustrated as an example.
  • the electric field and magnetic field components of the microwave in the TM mode are illustrated by taking the propagation direction of the microwave in the TM mode as the positive direction of the Z axis as an example; when the propagation direction of the microwave in the TM mode is the Z axis When the axis is in the negative direction, the electric field component and the magnetic field component are similar, and will not be repeated here.
  • the microwave when the microwave is a transverse wave (TE mode, H wave), the propagation direction of the microwave is parallel to the X direction or the Y direction; at this time, the propagation direction of the microwave is parallel to the bearing surface 15 of the accommodating area 10 Parallel, that is, the propagation direction of the microwaves is perpendicular to the thickness direction (a direction) of the document. It can be seen from FIGS.
  • FIGS. 2A to 4D taking the bearing surface 15 horizontally arranged and the securities 2 placed horizontally on the bearing surface 15 as an example, a three-dimensional Cartesian coordinate system is established.
  • the propagation direction of the transverse magnetic wave) and the electric field component E and the magnetic field component H will be described.
  • the carrying surface 15 is set vertically, the securities rest on the carrying surface 15 vertically, and the entire three-dimensional Cartesian coordinate system only needs to be rotated at this time; when the securities are vertically placed, the propagation of each shear wave
  • the direction and the relationship between the electric field component E and the magnetic field component H and the bearing surface 15 are the same as the relationship between each other when the securities are placed horizontally, and will not be repeated here.
  • the microwave generator module uses beamforming technology to adjust the microwaves emitted by the microwave generator 31 into plane electromagnetic waves, and then uses a device (waveguide 32 ) made of microwave non-penetrating materials to eliminate its electric field and / or the longitudinal (ie, electromagnetic wave propagation direction) component of the magnetic field, forming transverse electromagnetic waves (TEM mode), transverse electromagnetic waves (TE mode, H wave) or transverse magnetic wave (TM mode, E wave). Then, the microwaves in the non-mixed mode are directly fed into the microwave working cavity 1 .
  • TEM mode transverse electromagnetic waves
  • TE mode, H wave transverse electromagnetic waves
  • TM mode transverse magnetic wave
  • the microwave in the accommodating area 10 can also be changed into a non-mixed mode microwave by adding a material for changing the microwave outside the accommodating area 10 .
  • a material for changing the microwave outside the accommodating area 10 For example, by setting the first baffle 4 and the second baffle 5 parallel to the bearing surface 15 on both sides of the accommodating area 10, and controlling the distance between the baffles 4 and 5 on both sides so that they are not larger than the half wavelength of the microwave (preferably ground, less than 0.3 times the microwave wavelength), changing the microwave in the accommodating area 10 to obtain a non-mixed mode microwave.
  • the method for controlling a microwave processing device for securities includes the following steps:
  • S1 collect the visible light image of the stack of securities in the microwave working cavity, and the stack of securities refers to a plurality of overlapping securities;
  • step S3 according to the quantity of negotiable securities obtained in step S2, determine the output power and sterilization duration of the microwave power module;
  • the microwave generator module generates microwaves under the driving of the microwave power module
  • step S5 in the process of microwave sterilization, collect infrared images of the stacks of securities in real time; calculate the current temperature value of the securities according to the infrared images, and calculate the current temperature value of the securities according to the difference between the current temperature value of the securities and the preset upper temperature threshold
  • the comparison results are used to control the microwave sterilization process; within the sterilization duration determined in step S3, when the current temperature value of the securities is lower than the preset upper temperature threshold, the sterilization is continued with the output power determined in step S3 until the sterilization continues.
  • the time is over; when the current temperature value of the securities is greater than or equal to the preset upper temperature threshold, the microwave sterilization is stopped in advance.
  • a visible light image detection unit is used to collect a visible light image of the stack of securities, where it mainly refers to a side cross-sectional image of the stack of securities.
  • the visible light image detection unit captures side cross-sectional images of stacks of securities that are neatly stacked from top to bottom. Since the microwave working cavity of the securities microwave processing device is usually a closed and light-tight space, in order to ensure the collection effect of visible light images, a visible light illumination unit needs to be used to provide visible light during the process of visible light image collection.
  • step S2 an image processing algorithm is used to identify the edge of each securities in the side section from the visible light image, and then the number of all securities is counted according to the number of edges.
  • step S3 according to the quantity of negotiable securities obtained in step S2, the algorithm for determining the output power of the microwave power module and the sterilization duration is as follows:
  • the number of securities obtained by S2 and the output power of the microwave power module are selected and matched by an average matching method.
  • M is a positive integer greater than 1; after determining the first quantity grade according to the quantity of securities obtained in step S2, the The power gears corresponding to the first number of gears are used as the output power P_map determined in step S3.
  • the maximum capacity C_MAX of the microwave working cavity into M grades, where M is a positive integer greater than 1, and the number of each grade is C_MAX/M (rounded off); the maximum power P_MAX is also divided into M grades, and the power of each grade is P_MAX/ M (rounded up).
  • the maximum capacity C_MAX and maximum power P_MAX of the working chamber can be divided into 10 grades. Taking the maximum capacity C_MAX of the microwave working cavity divided into 10 grades, and the maximum power P_MAX also divided into 10 grades as an example, in Table 1, the matching table of quantity grades and power grades is given.
  • Table 1 The comparison table between the output power of the microwave power module and the number of securities
  • the disinfection duration corresponding to each grade is set; After the quantity level, the disinfection duration corresponding to the second quantity level is obtained.
  • N is a positive integer greater than 1, M and N can be the same or different, and the number of each grade is C_MAX/N (rounded off); set the duration of disinfection as T_dis, the unit time of the disinfection duration is T_u_dis; the second quantity gear is calculated according to the actual number of securities, and the disinfection duration is automatically calculated as the disinfection duration T_dis determined in step S3.
  • the system divides the total number of securities into 4 gears, and the mapping relationship for automatically calculating the sterilization duration is as follows:
  • step S4 the microwave power module outputs power to the microwave generator module according to the output power and sterilization duration determined in step S3, so that the microwave generator module generates a microwave signal source with suitable energy.
  • the ultraviolet sterilization module emits high-energy ultraviolet light to sterilize the securities and the cavity environment in the device.
  • step S5 the infrared image detection unit shoots the stack of negotiable securities neatly stacked from top to bottom in the direction of looking down and squinting downward, which can capture the infrared image of the surface of one side of the stack of negotiable securities (for example, when there is a stack of negotiable securities)
  • the stack of securities is placed horizontally, the infrared image of the top of the stack of securities is collected), and the infrared image of the side section of the stack of securities can be captured.
  • the algorithm analyzes the infrared image, and the algorithm to obtain the current temperature value of the securities is as follows:
  • the temperature calculation algorithm uses the average value of pixels in the M1 ⁇ M1 area as the temperature value of the area, and M1 is the pixel width of the side length of the area.
  • the image algorithm first locates all areas where high temperature values gather in the infrared image (such as the top of the stack, the corners of the stack, and other high temperature gathering areas). The determination of the high temperature value gathering areas is based on The pixel average value of this area is obtained by comparing with the set pixel threshold value, and the area exceeding the pixel threshold value is the high temperature value gathering area. The average value of the first C_high high temperature value regions (which can be calculated randomly, or in the order of temperature values from high to low, preferably the latter) before these regions are counted as the current high temperature value T_h, C_high is a positive integer, C_high is the default value (for example, it can be set to 5).
  • T_h When T_h is greater than or equal to T_warning, take T_h as the current temperature value T_act of the stack, and stop generating microwaves in this state.
  • T_h When T_h is less than T_warning, the average value T_agv of all high temperature value areas is counted, and T_agv is taken as the current temperature value T_act of the stack.
  • T_warning is the warning temperature value
  • T_set is the preset upper limit temperature threshold
  • T_set is required to be less than or equal to T_warning.
  • step S5 after the current temperature value T_act of the stack is determined, since the sterilization process of securities is a dynamic process with extremely rapid temperature changes, the microwave sterilization process can be monitored and controlled according to the following algorithm.
  • the preset upper limit temperature threshold value T_set is the upper limit value of the temperature of securities, and the temperature fluctuation allowable value of the preset upper limit temperature threshold value is T_rang.
  • a temperature threshold range centered on T_set can be determined from the preset upper limit temperature threshold T_set and the temperature fluctuation allowable value T_rang, the lower limit is the temperature critical value, and the upper limit is the temperature warning value.
  • the power value P_map generates microwaves for heating until the disinfection duration is reached; when the difference between the current temperature value T_act and T_set of the securities is greater than or equal to T_rang, the microwave output must be terminated in advance. In other words, during the sterilization duration, the current temperature value of the securities must never exceed the upper limit of the temperature threshold range (ie, the temperature warning value).
  • the control method of the above-mentioned securities microwave processing device can be realized by the control system as shown in FIG. 6 .
  • the control system of the securities microwave processing device includes a control module 100, an image detection module 101, a microwave power module 102 and a microwave generator module 103, wherein the image detection module 101 and the microwave power module 102 are respectively connected to the control module 100;
  • the power module 102 is connected to the microwave generator module 103 .
  • the image detection module 101 is used to acquire visible light images and infrared images of the stacks of securities placed in the microwave working cavity.
  • the image detection module 101 includes a visible light image detection unit 6 , a visible light illumination unit 7 and an infrared image detection unit 8 (see FIG. 7 ).
  • the microwave power module 102 is used to output power to the microwave generator module 103; the microwave generator module 103 is powered by the microwave power module 102 to generate a microwave signal source.
  • the control module 100 is used to calculate the quantity of securities according to the visible light image of the stack of securities, and to determine the output power and sterilization duration of the microwave power module 102 according to the quantity of securities, and then control the microwave power module 102 to The output power determined by the quantity of securities outputs power to the microwave generator module 103, and the microwave generator module 103 generates a microwave signal source with suitable energy.
  • the control module 100 is further configured to calculate the current temperature value of the securities stack according to the infrared image of the securities stack, and use the current temperature value of the securities stack to control the process of microwave sterilization. Specifically, when the current temperature value of the securities is lower than the preset upper temperature threshold, the control module 100 controls the microwave power module 102 to output power to the microwave generator module 103 with the output power determined by the quantity of securities, and continues Sterilize until the end of the sterilization duration; when the current temperature value of the securities is greater than or equal to the preset upper temperature threshold, the output power of the microwave power module 102 is adjusted to 0, so that the microwave generator module 103 stops generating the microwave signal source, Stop microwave disinfection in advance to prevent the disinfection temperature from being too high and damaging the securities.
  • this embodiment provides a microwave processing device for securities, including: a rack 1 , a microwave working cavity 2 arranged on the rack 1 , and the microwave working cavity 2 is used for sterilizing securities. Sterilization area where securities can be placed and removed. Preferably, the value document can be rotated during the sterilization process to ensure the sterilization effect.
  • the microwave working cavity 2 can be a single-sided open cuboid structure and the opening can be sealed by the cover 3 ; for example, the microwave working cavity 2 shown in FIG. 7 has an upper opening, which can be sealed by the cover 3 .
  • a microwave anti-leakage mechanism 4 is provided on the edge of the cover body 3, and the microwave anti-leakage mechanism 4 is used to reduce electromagnetic leakage during the disinfection and sterilization process of securities to ensure the personal safety of operators.
  • the stacks of securities can be directly placed in the microwave working cavity 2; they can also be placed in the retractable securities placement area 5, by placing the stacks of securities in the securities placement area 5, and then placing the securities Zone 5 moves telescopically to send the stacks of securities into the microwave working cavity 2 .
  • a visible light illumination unit 6, a visible light image detection unit 7 and an infrared image detection unit 8 are arranged around the microwave working cavity 2.
  • the visible light illumination unit 6, the visible light image detection unit 7 and the infrared image detection unit 8 form an image detection module 101;
  • the unit 6 , the visible light image detection unit 7 and the infrared image detection unit 8 are respectively connected to the control module 100 .
  • the image acquisition range of the visible light image detection unit 7 may only cover one side section of the stack of negotiable securities; the visible light image detection unit 7 may be arranged on the side of the microwave working cavity 2 .
  • the image acquisition range of the infrared image detection unit 8 should cover one side surface and one side section of the stack of securities at the same time.
  • the infrared image detection unit 8 can photograph the stacks of securities that are neatly stacked from top to bottom in a downward direction.
  • a microwave generator module 103 and a waveguide 10 are also arranged on the side of the microwave working cavity 2 .
  • the microwaves generated by the microwave generator module 103 propagate through the waveguide 10 and then enter the microwave working cavity 2 .
  • the waveguide 10 adopts a microwave-specific waveguide, and the microwave signal source can be properly conditioned and conducted to the microwave working cavity 2 by using the beamforming technology.
  • the microwave generator module 103 is connected to the microwave power module 102 , and the microwave power module 102 is used to provide power to the microwave generator module 103 .
  • the microwave power module 102 is a controllable variable frequency switching power supply, and the power of the output power is set by the control module 100 and output to the microwave generator module 103 .
  • the microwave generator module 103 is powered by the microwave power module 102 to generate a microwave signal source of suitable energy.
  • the control module 100 controls the microwave generator module 103 to generate a microwave signal source with suitable energy by controlling the output power of the microwave power module 102 .
  • a manual interaction module 107 connected to the control module 100 can also be arranged on the frame body.
  • the human-computer interaction module 107 is composed of a display screen unit 13 and an audio output unit 12, and is used to issue operation prompts Information (voice and video, etc.) and real-time display of the status of the entire process of disinfection and sterilization of securities.
  • an ultraviolet disinfection and sterilization module 105 connected to the control module 100 may also be arranged around the microwave working chamber 2 .
  • the ultraviolet disinfection and sterilization module 105 emits high-energy ultraviolet light to disinfect and sterilize the securities and the cavity environment in the equipment.
  • the ultraviolet disinfection and sterilization module 105 and the microwave generator module 103 can work simultaneously or separately.
  • the image detection module 101 includes a visible light image detection unit 6 , a visible light illumination unit 7 and an infrared image detection unit 8 .
  • the visible light image detection unit 6 obtains the visible light image of the side section of the securities to be sterilized and sterilized, and the control module 100 calculates the number of securities from the image, and then The output power and sterilization duration of the microwave power module 102 are set according to the quantity.
  • the first quantity gear and the second quantity gear can be determined according to the quantity of securities to be sterilized and sterilized.
  • the output power and sterilization duration of the microwave power module 102 are set by the power level corresponding to the first quantity level and the disinfection duration corresponding to the second number level; if the number of securities to be sterilized and sterilized is small, the Set a smaller output power, and set a larger output power until the number of securities to be sterilized and sterilized is large until it works at full power.
  • the infrared image detection unit 8 acquires the infrared image of the securities to be sterilized and sterilized in real time, and the control module 100 determines the current temperature value of the securities from the image, and then according to the current temperature value
  • the output power of the microwave power module 102 can be adjusted in real time according to the high or low level. For example, if the current temperature value of the securities to be sterilized and sterilized is lower than the set upper temperature threshold, the current output power will be maintained; otherwise, the output power of the microwave power module 102 will be adjusted. to zero.
  • the microwave processing device for securities based on shear waves propagates the microwaves in a non-mixed mode in the accommodating area, and makes the microwaves have no magnetic field components in the direction perpendicular to the bearing surface, that is, , so that there is no magnetic field component in the thickness direction of the securities, and the optical characteristic materials, magnetic characteristic materials and electrical characteristic materials in the securities do not cut the magnetic field lines, which can avoid the optical characteristic materials and magnetic characteristics in the securities.
  • Materials and electrical characteristic materials generate electromotive force in microwaves, thereby completely avoiding the phenomenon of tip discharge and preventing carbonization and burning of securities.

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Abstract

一种基于横波的有价证券微波处理装置，包括微波发生器模块和微波工作腔(1)；微波发生器模块用于产生微波，微波在微波工作腔(1)的容纳区（10）以非混合模式的横波传播，并且，微波在与有价证券承载面（15）垂直的方向上无磁场分量。一种有价证券微波处理装置的控制方法和控制系统。控制方法包括：采集有价证券堆垛的可见光图像并计算其数量；根据数量确定微波电源模块(102)的输出功率和消毒持续时间；微波发生器模块(103)产生微波；根据采集的有价证券堆垛的红外图像计算出当前温度；根据有价证券的当前温度值对微波消毒过程进行控制。

Description

基于横波的有价证券微波处理装置 技术领域
本发明涉及一种有价证券微波处理装置，用于对附着在有价证券表面的病毒、细菌等进行消毒灭菌。
背景技术
流通中的有价证券上附着有大量的细菌、病毒以及寄生虫。这些细菌、病毒和寄生虫一旦在人体内传播、感染或是寄生后，对人体健康造成的不利影响是非常大的，因此，对有价证券进行消毒、杀菌是非常有必要的。尤其对于一些传染性极强以及对身体损害极大的病毒，通过消毒灭菌装置阻止病毒、细菌的传播具有积极的意义。
目前，用来对有价证券进行消毒灭菌的方式主要有以下三种：一、通过紫外线方式进行消毒；二、通过加热的方式进行消毒；三、通过微波方式进行消毒。其中，微波消毒灭菌以其穿透力强，对附着在有价证券上的病毒及细菌均具有较好的杀毒灭菌效果。
然而，微波是一种电磁波，金属导体在微波中，会产生电磁感应，电荷会在金属导体表面重新分布，从而产生电势差。如果电势差足够大，可能会击穿空气使空气电离产生尖端放电、火花甚至电弧。有价证券为加强其防伪性能，会加入光学特征材料、磁性特征材料和电学特征材料等。直接采用微波技术对这些有价证券进行消毒灭菌会损伤其票面印刷特征和机读防伪性能，严重时会导致有价证券碳化或烧毁。
发明内容
本发明所要解决的技术问题在于提供一种基于横波的有价证券微波处理装置。
为了实现上述技术目的，本发明采用下述技术方案：
根据本发明实施例的第一方面，提供一种基于横波的有价证券微波处理装置，包括微波发生器模块和微波工作腔；
所述微波工作腔包括至少一个容纳区，所述容纳区用于放置有价证券；所述容纳区包括承载面，承载面用于以与所述有价证券票面平行的状态承载所述有价证券，所述承载面与所述有价证券的厚度方向 垂直；
所述微波发生器模块，用于产生微波，并利用波束形成技术将微波调整成平面电磁波，再利用由微波非穿透材料制成的结构消除其电场和/或磁场的纵向分量，形成非混合模式的横波；然后，所述微波从一侧或多侧进入所述微波工作腔后传播，并且，所述微波在与所述承载面垂直的方向上无磁场分量。
其中较优地，当微波是横电磁波时，所述电磁波的传播方向与所述容纳区承载面垂直。
其中较优地，当微波是横磁波时，所述微波的传播方向与所述容纳区承载面垂直。
其中较优地，当微波是横电波时，所述微波的传播方向与所述容纳区承载面平行。
其中较优地，所述微波的磁场分量与所述容纳区承载面平行，所述微波的电场分量与所述容纳区承载面垂直。
其中较优地，所述微波的电场分量和磁场分量均与所述容纳区承载面平行。
其中较优地，所述承载面水平设置，用于水平承载有价证券；或者，所述承载面竖直设置，用于竖直承载有价证券。
根据本发明实施例的第二方面，提供一种有价证券微波处理装置的控制方法，包括如下步骤：
S1，采集微波工作腔内的有价证券堆垛的可见光图像；
S2，根据可见光图像，计算出有价证券堆垛中有价证券的数量；
S3，根据步骤S2获得的有价证券的数量，确定微波电源模块的输出功率和消毒持续时间；
S4，微波发生器模块在微波电源模块的驱动下产生微波；
S5，在微波消毒的过程中，实时采集有价证券堆垛的红外图像；根据红外图像计算出有价证券的当前温度值，并根据有价证券的当前温度值与预设的上限温度阈值的比较结果，对微波消毒过程进行控制；在步骤S3确定的消毒持续时间内，当有价证券的当前温度值低于预设的上限温度阈值时，以步骤S3确定的输出功率持续进行微波消毒，否则，提前停止微波消毒。
根据本发明实施例的第三方面，提供一种有价证券微波处理装置的控制系统，包括：控制模块，与所述控制模块连接的图像检测模块和微波电源模块，与微波电源模块连接的微波发生器模块；其中，
所述检测模块用于获取放置在微波工作腔中的有价证券堆垛的可见光图像和红外图像；
所述微波电源模块用于给所述微波发生器模块输出电源；
所述微波发生器模块由微波电源模块供电以产生微波信号源；
所述控制模块用于根据有价证券堆垛的可见光图像计算出有价证券的数量，并根据有价证券的数量确定所述微波电源模块的输出功率和消毒持续时间，然后控制微波电源模块向微波发生器模块输出电源，微波发生器模块产生能量合适的微波信号源；
所述控制模块还用于根据有价证券堆垛的红外图像计算有价证券堆垛的当前温度值，当有价证券堆垛的当前温度值低于预设的上限温度阈值时，微波电源模块以选定的输出功率向微波发生器模块输出电源，直至消毒持续时间结束；当有价证券堆垛的当前温度值不低于预设的上限温度阈值时，使微波发生器模块停止产生微波。
本发明所提供的基于横波的有价证券微波处理装置，通过使微波在容纳区以非混合模式的横波传播，并且，使微波在与承载面垂直的方向上无磁场分量，即，使有价证券厚度方向上无磁场分量的存在，有价证券中的光学特征材料、磁性特征材料和电学特征材料等不切割磁感线，从而避免在有价证券上产生感应电动势，即可避免光学特征材料、磁性特征材料和电学特征材料等在微波环境中产生尖端放电、发热甚至引发火情。上述有价证券微波处理装置，可以实现有价证券的微波消毒灭菌，并且不会损伤有价证券的票面印刷特征和机读防伪性能。
附图说明
图1是本发明实施例提供的基于横波的有价证券微波处理装置的结构示意图；
图2A至图2H是微波为TEM模时，微波的传播方向示意；
图3A至图3D是微波为TM模时，微波的传播方向示意；
图4A至图4D是微波为TE模时，微波的传播方向示意；
图5是本发明实施例提供的有价证券微波处理装置的控制方法的流程图；
图6是本发明实施例提供的有价证券微波处理装置的控制系统的组成框图；
图7是采用图6所示的控制系统的有价证券微波处理装置的剖视结构图；
图8是采用图6所示的控制系统的有价证券微波处理装置的立体结构图。
具体实施方式
下面结合附图和具体的实施例对本发明的技术方案进行进一步地详细描述。
如图1所示，本发明实施例提供的基于横波的有价证券微波处理装置，包括微波工作腔1和至少一个微波发生器模块。
微波工作腔1包括至少一个容纳区10，容纳区10用于放置有价证券2。容纳区10包括承载面15，承载面15用于以与有价证券2票面平行(可以是大致平行)的状态承载单张或多张有价证券2，承载面15与有价证券2的厚度方向(如图2和图3所示的a向)垂直。当承载面15水平设置时，承载面15用于水平(可以是大致水平)承载有价证券2，有价证券2水平放置在承载面上；或者，当承载面15竖直设置时，承载面15用于竖直(可以是大致竖直)承载有价证券2，有价证券2倾斜倚靠在承载面15上。承载面15与有价证券2的票面大致平行，可以存在小范围倾角。
微波发生器模块包括微波发生器30、电源31和波导管32，电源31给微波发生器30供电，微波发生器31用于产生微波，微波经波导管32传导后从微波工作腔1的一侧或多侧进入微波工作腔1内部。例如，微波可以从微波工作腔1的左侧进入微波工作腔1内部，当然，微波也可以从微波工作腔1的其他方向(如，顶面、底面、右侧、前方、后方中的任一方向)或同时从多个方向进入微波工作腔1。
为了避免有价证券2的光学特征材料、磁性特征材料和电学特征材料等产生电动势，在本发明实施例提供的基于横波的有价证券微波处理装置中，微波在容纳区10以非混合模式(如横电磁波、横电波或 横磁波)传播，并且，微波在与承载面15垂直的方向上无磁场分量，也即，使有价证券厚度方向上(a向)无磁场分量的存在。此时，有价证券中的光学特征材料、磁性特征材料和电学特征材料等不切割磁感线，从而避免在有价证券上产生感应电动势，即可彻底避免光学特征材料、磁性特征材料和电学特征材料等在微波环境中产生尖端放电、发热甚至引发火情。上述基于横波的有价证券微波处理装置，可以实现有价证券的微波消毒灭菌，且不会损伤其票面印刷特征和机读防伪性能。
在图2A至图4D中，以有价证券2水平放置为例，建立了三维直角坐标系，对非混合模式的横波(包括横电磁波、横电波和横磁波)的传输方向及电场分量E和磁场分量H的分布进行图示。其中，以有价证券2的长度方向和宽度方向分别为X轴和Y轴，以有价证券2的厚度方向为Z轴。
具体地说，如图2A至图2H所示，当微波是横电磁波(TEM模)时，微波的传播方向与Z轴平行，可以是正向，也可以是负向；此时，微波的传播方向与容纳区10的承载面15垂直，即，微波的传播方向与有价证券厚度方向(a向)平行。从图2A至图2H可以看出，当微波的传播方向与有价证券厚度方向(a向)平行时，电场分量E和磁场分量H分布在与有价证券的票面平行的平面内，电场分量E和磁场分量H均与容纳区承载面15平行。当然，电场分量E和磁场分量H的方向不限于图2A至图2H中所示的方向，图中仅以典型的磁场分量和电场分量的方向为例进行了图示。在图2A至图2H中，以TEM模的微波的传播方向为Z轴正向为例，对TEM模的微波的电场分量和磁场分量进行了图示；当TEM模的微波的传播方向为Z轴负向时，电场分量和磁场分量的情况与之类似，在此不再赘述。
如图3A至图3D所示，当微波是横磁波(TM模、E波)时，微波的传播方向与Z轴平行，可以是正向，也可以是负向；此时，微波的传播方向与容纳区10的承载面15垂直，即，微波的传播方向与有价证券厚度方向(a向)平行。从图3A至图3D可以看出，当微波的传播方向与有价证券厚度方向(a向)平行时，电场分量E与有价证券的厚度方向平行(即电场分量E与容纳区承载面15垂直)，磁场分量 H分布在与有价证券的票面平行的平面内(即磁场分量H与容纳区承载面15平行)；磁场分量H的方向不限于图中所示的方向，图中仅以典型的磁场分量的方向为例进行了图示。在图3A至图3D中，以TM模的微波的传播方向为Z轴正向为例，对TM模的微波的电场分量和磁场分量进行了图示；当TM模的微波的传播方向为Z轴负向时，电场分量和磁场分量的情况与之类似，在此不再赘述。
如图4A至图4D所示，当微波是横电波(TE模、H波)时，微波的传播方向与X向或Y向平行；此时，微波的传播方向与容纳区10的承载面15平行，即，微波的传播方向与有价证券厚度方向(a向)垂直。从图4A至图4D可以看出，当微波的传播方向与X轴平行(包括正向和负向)时，电场分量E与有价证券的厚度方向平行(即，电场分量E与容纳区承载面15垂直)，磁场分量H与有价证券的票面平行(即，磁场分量H与容纳区承载面15平行)。在图4A至图4D中，以TE模的微波的传播方向为X轴正向为例，对TE模的微波的电场分量和磁场分量进行了图示；当TE模的微波的传播方向为X轴负向、Y轴正向和Y轴负向时，电场分量和磁场分量的情况与之类似，在此不再赘述。
在图2A至图4D中，以承载面15水平设置，有价证券2水平放置在承载面15上为例，建立了三维直角坐标系，对非混合模式的横波(包括横电磁波、横电波和横磁波)的传输方向及电场分量E和磁场分量H进行说明。当承载面15竖直设置时，有价证券竖直倚靠在承载面15上，此时只需对整个三维直角坐标系进行旋转即可；在有价证券竖直放置时，每种横波的传播方向及电场分量E和磁场分量H与承载面15之间的关系与有价证券水平放置时彼此之间的关系相同，在此不再赘述。
为了产生非混合模式的微波，微波发生器模块，利用波束形成技术将微波发生器31发出的微波调整成平面电磁波，再利用微波非穿透材料制成的装置(波导管32)消除其电场和/或磁场的纵向(即电磁波传播方向)分量，形成横电磁波(TEM模)、横电波(TE模、H波)或横磁波(TM模、E波)。然后，直接将非混合模式的微波送入微波工作腔1。
此外，还可以通过在容纳区10外部增加改变微波的材料，使得容纳区10内的微波变为非混合模式的微波。例如，通过在容纳区10两侧分别设置与承载面15平行的第一挡板4和第二挡板5，并控制两侧挡板4和5的距离使其不大于微波半波长(较优地，小于0.3倍微波波长)，改变容纳区10内的微波，获得非混合模式的微波。
如图5所示，本发明实施例提供的有价证券微波处理装置的控制方法，包括如下步骤：
S1，采集微波工作腔内的有价证券堆垛的可见光图像，有价证券堆垛是指多张重叠放置的有价证券；
S2，根据可见光图像，计算出有价证券堆垛中有价证券的数量；
S3，根据步骤S2获得的有价证券的数量，确定微波电源模块的输出功率和消毒持续时间；
S4，微波发生器模块在微波电源模块的驱动下产生微波；
S5，在微波消毒的过程中，实时采集有价证券堆垛的红外图像；根据红外图像计算出有价证券的当前温度值，并根据有价证券的当前温度值与预设的上限温度阈值的比较结果，对微波消毒过程进行控制；在步骤S3确定的消毒持续时间内，当有价证券的当前温度值低于预设的上限温度阈值时，以步骤S3确定的输出功率持续消毒直至消毒持续时间结束；当有价证券的当前温度值大于或等于预设的上限温度阈值时，提前停止微波消毒。
具体地说，在步骤S1中，使用可见光图像检测单元采集有价证券堆垛的可见光图像，其中，主要指有价证券堆垛的侧截面图像。可见光图像检测单元会拍摄从上而下整齐堆叠的有价证券堆垛的侧截面图像。由于有价证券微波处理装置的微波工作腔通常是一个密闭不透光的空间，为了保证可见光图像的采集效果，在可见光图像采集的过程中，需要使用可见光照明单元提供可见光。
在步骤S2中，利用图像处理算法，从可见光图像中识别出侧截面中每一张有价证券的边沿，之后再根据边沿的数量统计出所有有价证券的数量。
在步骤S3中，根据步骤S2获得的有价证券的数量，确定微波电源模块的输出功率和消毒持续时间的算法如下：
把S2获得的有价证券的数量和微波电源模块的输出功率选择匹配采用平均匹配的方式。通过将微波工作腔的最大容量C_MAX和微波电源模块P_MAX的最大功率划分为M档，M为大于1的正整数；根据步骤S2获得的有价证券的数量确定第一数量档位后，获得与第一数量档位对应的功率档位，作为步骤S3确定的输出功率P_map。
把微波工作腔的最大容量C_MAX划分为M档，M为大于1的正整数，每档数量为C_MAX/M(四舍五入取整)；把最大功率P_MAX也划分为M档，每档功率为P_MAX/M(四舍五入取整)。例如，根据有价证券的捆扎特点，可以将工作腔的最大容量C_MAX和最大功率P_MAX划分为10档。以将微波工作腔的最大容量C_MAX划分为10档，最大功率P_MAX也划分为10档为例，在表1中给出了数量档位和功率档位的匹配表。
表1微波电源模块的输出功率与有价证券数量之间的对照表
档位 有价证券数量 对应功率值
1 (1,C_MAX/10] P_MAX/10
2 (C_MAX/10×1,C_MAX/10×2] P_MAX/10×2
3 (C_MAX/10×2,C_MAX/10×3] P_MAX/10×3
4 (C_MAX/10×3,C_MAX/10×4] P_MAX/10×4
5 (C_MAX/10×4,C_MAX/10×5] P_MAX/10×5
6 (C_MAX/10×5,C_MAX/10×6] P_MAX/10×6
7 (C_MAX/10×6,C_MAX/10×7] P_MAX/10×7
8 (C_MAX/10×7,C_MAX/10×8] P_MAX/10×8
9 (C_MAX/10×8,C_MAX/10×9] P_MAX/10×9
10 (C_MAX/10×9,C_MAX] P_MAX
同理，通过将微波工作腔的最大容量C_MAX划分为N档，N为大于1的正整数，设置与每个档位对应的消毒持续时间；根据步骤S2获得的有价证券的数量确定第二数量档位后，获得与第二数量档位对应的消毒持续时间。
将微波工作腔的最大容量C_MAX划分为N档，N为大于1的正整数，M和N可以相同，也可以不同，每档数量为C_MAX/N(四舍五入取整)；设定消毒持续时间为T_dis,消毒持续时间的单位时间为T_u_dis；根据有价证券的实际数量计算第二数量档位，并自动计算消毒持续时间，作为步骤S3确定的消毒持续时间T_dis。
例如，系统根据微波工作腔的最大容量C_MAX，将有价证券的总数量划分成4个档位，自动计算消毒持续时间的映射关系如下:
数量(0,C_MAX/4×1],对应时间为T_u_dis；
(C_MAX/4×1,C_MAX/4×2],对应时间为T_u_dis*2；
(C_MAX/4×2,C_MAX/4×3],对应时间为T_u_dis*3；
(C_MAX/4×3,C_MAX/4×4],对应时间为T_u_dis*4。
在步骤S4中，微波电源模块根据步骤S3确定的输出功率及消毒持续时间，向微波发生器模块输出电源，使微波发生器模块产生能量合适的微波信号源。
与此同时，可选地，紫外线杀毒灭菌模块发出高能量的紫外光线对有价证券及设备内的腔体环境进行消毒灭菌。
在步骤S5中，红外图像检测单元以俯斜视向下的方向拍摄从上而下整齐堆叠的有价证券堆垛，既可以拍摄到有价证券堆垛一侧表面的红外图像(例如，当有价证券堆垛水平放置时，采集有价证券堆垛顶部的红外图像)，又可以拍摄到有价证券堆垛侧截面的红外图像。
获取有价证券堆垛的红外图像后，对红外图像进行算法分析，获得有价证券的当前温度值的算法如下：
温度计算算法采用M1×M1区域内像素平均值作为该区域的温度值，M1为区域边长的像素宽度。
根据红外图像中的像素分布，图像算法先定位到红外图像中所有高温度值聚集的区域(如堆垛顶部、堆垛棱角处和其它高温度聚集区)，该高温度值聚集区域的确定以该区域的像素平均值与设定的像素阈值进行比较获得，超过像素阈值的区域为高温度值聚集区域。在这些区域统计前C_high个高温度值区域(可以为随机计算，也可以以温度值从高到低的顺序计算，优选后者)的平均值作为当前温度高值T_h，C_high为正整数，C_high为预设值(例如，可以设置为5个)。在T_h大于等于T_warning时，把T_h作为堆垛的当前温度值T_act，此种状态下应停止发生微波。在T_h小于T_warning时，统计所有高温度值区域的平均值T_agv，并把T_agv作为堆垛的当前温度值T_act。T_warning是警戒温度值，T_set是预设的上限温度阈值，T_set要求小于等于T_warning。
在步骤S5中，当确定堆垛的当前温度值T_act之后，由于有价证券的消毒过程是一个温度变化极快的动态过程，可以根据以下算法对微波消毒过程进行监测及控制。
预设的上限温度阈值T_set为有价证券温度的上限阈值，预设上限温度阈值的温度波动允许值为T_rang。由预设的上限温度阈值T_set和温度波动允许值T_rang可以确定一个以T_set为中心的温度阈值范围，其下限值为温度临界值，其上限值为温度警戒值。在消毒持续时间T_dis内，有价证券的当前温度值T_act持续升高；当有价证券当前温度值T_act超过温度临界值时，即可初步认定消毒温度已达到预设的消毒温度，理论上即可停止消毒。由于有价证券的温度变化极快，在有价证券的当前温度值超过上限温度阈值T_set后，当有价证券当前温度值T_act与T_set差值小于T_rang时，还可持续按有价证券数量对应的功率值P_map产生微波进行加热，直至到达消毒持续时间；当有价证券当前温度值T_act与T_set差值大于等于T_rang时，必须提前结束微波输出。换句话说，在消毒持续时间内，有价证券的当前温度值，绝对不得超出温度阈值范围的上限值(即，温度警戒值)。
上述有价证券微波处理装置的控制方法可以通过如图6所示的控制系统实现。有价证券微波处理装置的控制系统，包括控制模块100、图像检测模块101、微波电源模块102和微波发生器模块103，其中，图像检测模块101和微波电源模块102分别与控制模块100连接；微波电源模块102和微波发生器模块103连接。
图像检测模块101用于获取放置在微波工作腔内的有价证券堆垛的可见光图像和红外图像。图像检测模块101包括可见光图像检测单元6、可见光照明单元7和红外图像检测单元8(参见图7)。
微波电源模块102用于给微波发生器模块103输出电源；微波发生器模块103由微波电源模块102供电以产生微波信号源。
控制模块100用于根据有价证券堆垛的可见光图像计算出有价证券的数量，并根据有价证券的数量确定微波电源模块102的输出功率和消毒持续时间，然后控制微波电源模块102以由有价证券数量确定的输出功率向微波发生器模块103输出电源，微波发生器模块103产 生能量合适的微波信号源。
控制模块100还用于根据有价证券堆垛的红外图像计算有价证券堆垛的当前温度值，并利用有价证券堆垛的当前温度值对微波消毒的过程进行控制。具体地说，当有价证券的当前温度值低于预设的上限温度阈值时，控制模块100控制微波电源模块102以由有价证券数量确定的输出功率向微波发生器模块103输出电源，持续消毒直至消毒持续时间结束；当有价证券的当前温度值大于或等于预设的上限温度阈值时，将微波电源模块102的输出功率调整为0，使微波发生器模块103停止产生微波信号源，提前停止微波消毒，防止消毒温度过高，损毁有价证券。
下面结合图7和图8所示的有价证券微波处理装置，对上述有价证券微波处理装置的控制系统进行介绍。
如图7和图8所示，该实施例提供了一种有价证券微波处理装置，包括：机架1，设置在机架1上的微波工作腔2，微波工作腔2为有价证券消毒灭菌处理区域，可对有价证券进行放置和取出操作。优选地，在消毒灭菌处理时可以使有价证券旋转以确保消毒灭菌效果。
微波工作腔2可以是单面开口的长方体结构且开口部位可由盖体3密封；例如在图7中所示的微波工作腔2具有上开口，上开口可以由盖体3密封。优选地，在盖体3的边缘位置设置有微波防泄漏机构4，微波防泄漏机构4用于减少有价证券消毒灭菌处理过程中的电磁泄露以确保操作人员的人身安全。
有价证券堆垛可以直接放入微波工作腔2中；也可以放置在可以伸缩的有价证券放置区5，通过将有价证券堆垛放置在有价证券放置区5，然后有价证券放置区5伸缩运动，将有价证券堆垛送入微波工作腔2内。
在微波工作腔2的四周设置有可见光照明单元6、可见光图像检测单元7和红外图像检测单元8，可见光照明单元6、可见光图像检测单元7和红外图像检测单元8组成图像检测模块101；可见光照明单元6、可见光图像检测单元7和红外图像检测单元8分别与控制模块100连接。可见光图像检测单元7的图像采集范围可以仅覆盖有价证券堆垛的一侧侧截面；可见光图像检测单元7可以设置在微波工作腔 2的侧面。红外图像检测单元8的图像采集范围应同时覆盖有价证券堆垛的一侧表面和一侧侧截面。红外图像检测单元8可以以俯斜视向下的方向拍摄从上而下整齐堆叠的有价证券堆垛。
在微波工作腔2的侧面还设置有微波发生器模块103和波导管10，微波发生器模块103产生的微波经波导管10传播后进入微波工作腔2。波导管10采用微波专用的波导管，可以利用波束形成技术将微波信号源进行恰当的调理并传导至微波工作腔2。
微波发生器模块103和微波电源模块102连接，微波电源模块102用于向微波发生器模块103提供电源。微波电源模块102为可控的变频开关电源，由控制模块100设定其输出电源的功率，输出至微波发生器模块103。微波发生器模块103由微波电源模块102供电以产生能量合适的微波信号源。控制模块100通过控制微波电源模块102的输出功率，控制微波发生器模块103产生能量合适的微波信号源。
在该有价证券微波处理装置中，还可以在架体上设置与控制模块100连接的人工交互模块107，人机交互模块107由显示屏单元13和音频输出单元12构成，用于发出操作提示信息(语音和视频等)和实时显示有价证券消毒灭菌全过程的状态。
此外，在微波工作腔2四周还可以设置与控制模块100连接的紫外线杀毒灭菌模块105。紫外线杀毒灭菌模块105消毒灭菌作业时，发出高能量的紫外光线对有价证券及设备内的腔体环境进行消毒灭菌。紫外线杀毒灭菌模块105和微波发生器模块103可以同时工作，也可以分开进行工作。
下面对上述控制系统的控制过程进行对应说明。图像检测模块101包括可见光图像检测单元6、可见光照明单元7和红外图像检测单元8。在实施微波消毒灭菌前，在可见光照明单元7的光照下，可见光图像检测单元6获取待消毒灭菌有价证券的侧截面可见光图像，控制模块100由该图像计算有价证券的数量，再根据数量的多少来设定微波电源模块102的输出功率和消毒持续时间，具体地说：可以根据待消毒灭菌有价证券的数量确定第一数量档位和第二数量档位，并选择与第一数量档位对应的功率档位以及与第二数量档位对应的消毒持续时间来设定微波电源模块102的输出功率和消毒持续时间；待消毒 灭菌有价证券的数量较少则设定较小的输出功率，待消毒灭菌有价证券的数量较多则设定较大的输出功率直至满功率工作。在消毒灭菌实施过程中，由红外图像检测单元8实时获取待消毒灭菌有价证券的红外图像，并且，控制模块100由该图像判定有价证券的当前温度值，再根据当前温度值的高低来实时调节微波电源模块102的输出功率，如：待消毒灭菌有价证券的当前温度值低于设定的上限温度阈值则维持当前输出功率，反之则将微波电源模块102的输出功率调至零。
综上所述，本发明实施例提供的基于横波的有价证券微波处理装置，通过使微波在容纳区以非混合模式传播，并且，使微波在与承载面垂直的方向上无磁场分量，即，使有价证券厚度方向上无磁场分量的存在，有价证券中的光学特征材料、磁性特征材料和电学特征材料等不切割磁感线，可以避免有价证券中的光学特征材料、磁性特征材料和电学特征材料等在微波中产生电动势，从而彻底避免产生尖端放电现象，防止有价证券的碳化和烧毁。使用上述有价证券微波处理装置，可以实现有价证券的微波消毒灭菌，并且不会损伤其票面印刷特征和机读防伪性能。
以上对本发明所提供的基于横波的有价证券微波处理装置进行了详细的说明。对本领域的一般技术人员而言，在不背离本发明实质内容的前提下对它所做的任何显而易见的改动，都将构成对本发明专利权的侵犯，将承担相应的法律责任。

Claims (18)

  1. 一种基于横波的有价证券微波处理装置，包括微波发生器模块和微波工作腔；其特征在于：
    所述微波工作腔包括至少一个容纳区，所述容纳区用于放置有价证券；所述容纳区包括承载面，承载面用于以与所述有价证券票面平行的状态承载所述有价证券，所述承载面与所述有价证券的厚度方向垂直；
    所述微波发生器模块，用于产生微波，并利用波束形成技术将微波调整成平面电磁波，再利用由微波非穿透材料制成的结构消除其电场和/或磁场的纵向分量，形成非混合模式的横波；然后，所述微波从一侧或多侧进入所述微波工作腔后传播，并且，所述微波在与所述承载面垂直的方向上无磁场分量。
  2. 如权利要求1所述的有价证券微波处理装置，其特征在于：
    当微波是横电磁波时，所述微波的传播方向与所述容纳区承载面垂直。
  3. 如权利要求1所述的有价证券微波处理装置，其特征在于：
    当微波是横磁波时，所述微波的传播方向与所述容纳区承载面垂直。
  4. 如权利要求1所述的有价证券微波处理装置，其特征在于：
    当微波是横电波时，所述微波的传播方向与所述容纳区承载面平行。
  5. 如权利要求1所述的有价证券微波处理装置，其特征在于：
    所述微波的磁场分量与所述容纳区承载面平行，所述微波的电场分量与所述容纳区承载面垂直。
  6. 如权利要求1所述的有价证券微波处理装置，其特征在于：
    所述微波的电场分量和磁场分量分均与所述容纳区承载面平行。
  7. 如权利要求1所述的有价证券微波处理装置，其特征在于：
    所述承载面水平设置，用于水平承载有价证券；或者，所述承载面竖直设置，用于竖直承载有价证券。
  8. 如权利要求1所述的有价证券微波处理装置，其特征在于：
    在每个所述容纳区的两侧设置有与所述承载面平行的挡板，同一容纳区两侧的所述挡板之间的距离不大于微波半波长，两个所述挡板均由微波非穿透材料制成。
  9. 如权利要求8所述的有价证券微波处理装置，其特征在于：
    两个所述挡板之间的距离小于0.3倍微波波长。
  10. 一种有价证券微波处理装置的控制方法，其特征在于包括如下步骤：
    S1，采集微波工作腔内的有价证券堆垛的可见光图像；
    S2，根据可见光图像，计算出有价证券堆垛中有价证券的数量；
    S3，根据步骤S2获得的有价证券的数量，确定微波电源模块的输出功率和消毒持续时间；
    S4，微波发生器模块在微波电源模块的驱动下产生微波；
    S5，在微波消毒的过程中，实时采集有价证券堆垛的红外图像；根据红外图像计算出有价证券的当前温度值，并根据有价证券的当前温度值与预设的上限温度阈值的比较结果，对微波消毒过程进行控制；在步骤S3确定的消毒持续时间内，当有价证券的当前温度值低于预设的上限温度阈值时，以步骤S3确定的输出功率持续进行微波消毒，否则，提前停止微波消毒。
  11. 如权利要求10所述的有价证券微波处理装置的控制方法，其特征在于：
    在步骤S1中，使用可见光图像检测单元采集有价证券堆垛的侧截面图像；在步骤S2中，利用图像处理算法，识别出侧截面中每一张有价证券的边沿，之后再根据边沿的数量统计出所有有价证券的数量。
  12. 如权利要求10所述的有价证券微波处理装置的控制方法，其特征在于：
    在步骤S3中，通过将微波工作腔的最大容量和微波电源模块的最大功率划分为M档，M为大于1的正整数；根据步骤S2获得的有价证券的数量确定第一数量档位后，获得与第一数量档位对应的功率档位；
    通过将微波工作腔的最大容量划分为N档，N为大于1的正整数，设置与每个档位对应的消毒持续时间；根据步骤S2获得的有价证券的数量确定第二数量档位后，获得与第二数量档位对应的消毒持续时间。
  13. 如权利要求10所述的有价证券微波处理装置的控制方法，其特征在于：
    在步骤S5中，红外图像检测单元至少同时获取有价证券堆垛一侧表面和一侧侧截面的红外图像。
  14. 如权利要求13所述的有价证券微波处理装置的控制方法，其特征在于从红外图像中获得有价证券的当前温度值的算法如下：
    温度计算算法采用M1×M1区域内像素平均值作为该区域的温度值，M1为区域边长的像素宽度；根据红外图像中的像素分布，图像算法根据预先设置的像素阈值，确定出红外图像中所有高温度值聚集的区域；在这些区域随机统计或按照温度从高到低的方式统计前C_high个高温度值区域的平均值作为当前温度高值T_h，C_high为预设值，C_high为正整数，在T_h大于等于T_warning时，把T_h作为堆垛的当前温度值T_act；在T_h小于T_warning时，统计所有高温度值区域的平均值T_agv，并把T_agv作为堆垛的当前温度值T_act；其中，T_warning是警戒温度值，T_warning大于等于预设的上限温度阈值。
  15. 如权利要求14所述的有价证券微波处理装置的控制方法，其特征在于：
    在步骤S5中，预设的上限温度阈值T_set为有价证券温度的上限阈值，预设上限温度阈值的温度波动允许值为T_rang；在消毒持续时间内，在有价证券的当前温度值超过上限温度阈值T_set后，当有价证券当前温度值T_act与T_set差值小于T_rang时，持续按有价证券数量对应的功率值P_map产生微波进行加热，直至到达消毒持续时间结束；当有价证券当前温度值T_act与T_set差值大于等于T_rang时，提前结束微波输出。
  16. 如权利要求1所述的有价证券微波处理装置的控制方法，其特征在于：
    在步骤S4中，微波发生器模块产生微波的同时，使紫外线杀毒灭菌模块对微波工作腔进行消毒灭菌。
  17. 一种有价证券微波处理装置的控制系统，其特征在于包括：控制模块，与所述控制模块连接的图像检测模块和微波电源模块，与微波电源模块连接的微波发生器模块；其中，
    所述检测模块用于获取放置在微波工作腔中的有价证券堆垛的可见光图像和红外图像；
    所述微波电源模块用于给所述微波发生器模块输出电源；
    所述微波发生器模块由微波电源模块供电以产生微波信号源；
    所述控制模块用于根据有价证券堆垛的可见光图像计算出有价证券的数量，并根据有价证券的数量确定所述微波电源模块的输出功率和消毒持续时间，然后控制微波电源模块向微波发生器模块输出电源，微波发生器模块产生能量合适的微波信号源；
    所述控制模块还用于根据有价证券堆垛的红外图像计算有价证券堆垛的当前温度值，当有价证券堆垛的当前温度值低于预设的上限温度阈值时，微波电源模块以选定的输出功率向微波发生器模块输出电源，直至消毒持续时间结束；当有价证券堆垛的当前温度值不低于预设的上限温度阈值时，使微波发生器模块停止产生微波。
  18. 如权利要求17所述的有价证券微波处理装置的控制系统，其特征在于：
    所述检测模块包括可见光图像检测单元、可见光照明单元和红外图像检测单元；可见光图像检测单元的图像采集范围至少覆盖有价证券堆垛的一侧侧截面；红外图像检测单元的图像采集范围至少同时覆盖有价证券堆垛的一侧表面和一侧侧截面。
PCT/CN2021/103410 2020-08-06 2021-06-30 基于横波的有价证券微波处理装置 WO2022028155A1 (zh)

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