WO2013053335A1 - Imageur infrarouge thermique panoramique et système de détection infrarouge ayant celui-ci - Google Patents

Imageur infrarouge thermique panoramique et système de détection infrarouge ayant celui-ci Download PDF

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Publication number
WO2013053335A1
WO2013053335A1 PCT/CN2012/082901 CN2012082901W WO2013053335A1 WO 2013053335 A1 WO2013053335 A1 WO 2013053335A1 CN 2012082901 W CN2012082901 W CN 2012082901W WO 2013053335 A1 WO2013053335 A1 WO 2013053335A1
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Prior art keywords
wide
infrared
angle
circuit module
electrically connected
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PCT/CN2012/082901
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English (en)
Chinese (zh)
Inventor
吴士明
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Wu Shiming
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Publication of WO2013053335A1 publication Critical patent/WO2013053335A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/70—Means for positioning the patient in relation to the detecting, measuring or recording means
    • A61B5/704—Tables
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
    • A61B5/015—By temperature mapping of body part

Definitions

  • the invention belongs to the field of infrared thermal imaging technology, and particularly relates to a medical wide-angle infrared thermal imager, and also relates to an infrared detection system containing the wide-angle infrared thermal imager.
  • Infrared thermal imaging technology has been applied to the medical field for more than 40 years. Since the British doctor Lawson used infrared thermal imaging technology to diagnose breast cancer in 1956, medical infrared thermal imaging technology has gradually attracted people's attention. In recent years, with the development of optoelectronic technology, computer multimedia technology, especially semiconductor technology, the resolution and clarity of thermal imaging cameras have reached the level of clinical demand. Therefore, the application of medical infrared imaging cameras has gradually received extensive attention. It has become a new research hotspot in the world. At present, the half-length imaging distance of the medical thermal imager is 4.5 to 5.0 m, and the staff operating table makes the thermal image room require at least 15 square meters of space, which brings certain inconvenience to the infrared thermal image operation.
  • the infrared imager is required to detect the breast mass with high sensitivity.
  • the breast will be partially compressed, resulting in inaccurate infrared thermography, which may lead to misdiagnosis of the lesion and delay diagnosis.
  • the current infrared thermal imaging background has not been standardized. The specific problems are as follows: a. Because the imaging background temperature is not uniform, it cannot be standardized, and its image is not objective, such as body temperature 37 ° C, background 35 ° C, or body temperature 37 °C, background 25 °C, can not be compared; b.
  • the present invention aims to provide a wide-angle infrared thermal imager with a half-length imaging distance of only 1.5 m, improved heat collection capability and image quality, convenient operation, and easy implementation.
  • Another object of the present invention is to provide an infrared detecting system comprising the above wide-angle infrared camera. The patient can directly lie on the diagnostic bed for infrared detection, and the detection is convenient and the result is more accurate.
  • the technical solution of the present invention is a wide-angle infrared camera, which comprises a wide-angle lens, an uncooled detector and a peripheral circuit module, an FPGA timing generation and an infrared data processing circuit, and a transmission interface circuit module. And the power circuit module; the power circuit module is further electrically connected to the uncooled detector and the peripheral circuit module, and the FPGA timing generation and the infrared data processing circuit; wherein the wide-angle lens is a wide-angle infrared thermal lens.
  • the uncooling detector and the peripheral circuit module of the present invention are electrically connected to the FPGA timing generation and the infrared data processing circuit through an A/D conversion circuit, and the A/D conversion circuit is also electrically connected to the power supply circuit module.
  • the infrared detection system comprises a diagnostic bed for a patient lying thereon, the wide-angle lens of the wide-angle infrared camera is disposed directly above the diagnostic bed, and the wide angle The infrared camera can slide relative to the diagnostic bed.
  • the wide-angle infrared camera of the present invention is disposed above the diagnostic bed through a bracket of a frame structure, wherein the wide-angle infrared camera is disposed under the door beam of the door frame structure; the two points at the lower end of the bracket correspond to the diagnostic bed
  • the sides are connected by rails.
  • the wide-angle infrared camera is fixed on the bracket by a lifting arm.
  • Two ergonomically designed breast body positioning holes are formed on the diagnostic bed body, and a lower wide-angle infrared camera mounted along the center line of the two breast body position holes is disposed under the breast body position hole, and the lower wide angle camera The wide-angle lens of the infrared camera is facing upward; a breast thermal stimulation generator is arranged at a position near the bottom of the diagnostic bed near the breast body hole.
  • the wide-angle infrared camera can also be rotated along the longitudinal direction of the diagnostic bed when it can be lifted up and down along the lifting arm; a vertical background frame is disposed in front of or behind the longitudinal direction of the diagnostic bed, and the background frame The wide-angle lens that is horizontally rotated with the wide-angle infrared camera is vertically opposite to each other; a human body rotation angle swivel disk is disposed in front of the background frame.
  • a shelter frame is disposed around the background frame, and a reference heat radiation source black body is disposed at an edge of the background frame.
  • the background frame is a semiconductor background temperature control plate, and the semiconductor background temperature control plate comprises a PID controller and a semiconductor refrigeration component electrically connected to the PID controller; and the semiconductor background temperature control plate further has a circulating wind a temperature sensor is disposed at an exit end of the circulating air duct, and a temperature sensor access end electrically connected to the temperature sensor is disposed on the PID controller; the PID controller and the semiconductor refrigeration component simultaneously communicate with a control interface Sexual connection.
  • the semiconductor background temperature control board further includes a DC power source and an isolated power source electrically connected to the DC power source. The DC power source is electrically connected to the semiconductor refrigeration component, and the isolated power source is electrically connected to the PID controller.
  • the wide-angle infrared thermal imager adopts a wide-angle infrared thermal image lens, and the half-body imaging only needs 1.5m. At the same time, the heat transfer loss is greatly reduced due to the shortening of the imaging distance, and the thermal imaging signal is greatly enhanced, and the imaging quality is compared with the conventional thermal imager. It is easy to promote by 9 times or more; in addition, the wide-angle infrared camera requires a small working space, the imaging environment is easy to control, easy to implement, and low in cost.
  • Infrared detection is performed by using the patient's flat type, which is convenient for infrared detection of patients who cannot stand or suffer from local or general paralysis caused by nerve pain or local pain, and avoids muscle compression and muscle contraction caused by standing, sputum, etc.
  • the heat generated by the influence affects the accuracy of the infrared imaging results.
  • the breast is subjected to cold or heat stimulation by the breast hot and cold stimulation generator.
  • the imaging of the breast mass after cold or thermal stimulation is bound to be different from that of the normal breast after cold or thermal stimulation; and the breast mass is stimulated by cold or heat.
  • the recovery time is inconsistent with the recovery time under normal conditions, so that it can be collected by thermal imaging, and the comparison and detection can more easily and accurately detect the location and condition of the lesion.
  • the infrared imaging environment is standardized, so that the background temperature of the image is uniform and the image is more objective.
  • the temperature is measured by the black body calibration camera, the shelter frame is used to avoid the airflow interference in the thermal image, and the body rotation angle is used to facilitate the rotation. Operation, and the resulting images are accurate and easy to compare.
  • FIG. 1 is a block diagram showing the structure of a specific embodiment of a wide-angle infrared camera of the present invention
  • FIG. 2 is a schematic structural view of an infrared monitoring system of the present invention
  • FIG. 3 is a schematic diagram of the internal module of the semiconductor background temperature control board in FIG. 2 .
  • the wide-angle infrared camera of the present invention is disposed above the diagnostic bed through a bracket of a frame structure, wherein the wide-angle infrared camera is disposed under the door beam of the door frame structure; the two points at the lower end of the bracket correspond to the diagnostic bed
  • the sides are connected by rails.
  • the wide-angle infrared camera is fixed on the bracket by a lifting arm. Through the wide-angle infrared camera's lifting and setting, it makes the detection of patients of different body types more scientific and humanized.
  • Two ergonomically designed breast body positioning holes are formed on the diagnostic bed body, and a lower wide-angle infrared camera mounted along the center line of the two breast body position holes is disposed under the breast body position hole, and the lower wide angle camera The wide-angle lens of the infrared camera is facing upward; a breast thermal stimulation generator is arranged at a position near the bottom of the diagnostic bed near the breast body hole.
  • Infrared detection of breast masses in female breast patients the patient is on the diagnosis of the bed, the breast naturally sag in the body position of the breast, avoiding the accuracy of the microstructural changes due to the impact of muscle compression.
  • the breast is subjected to cold or heat stimulation by the breast hot and cold stimulation generator.
  • the imaging of the breast mass after cold or thermal stimulation is bound to be different from that of the normal breast after cold or thermal stimulation; and the breast mass is stimulated by cold or heat.
  • the recovery time is inconsistent with the recovery time under normal conditions, so that it can be collected by thermal imaging, and the comparison and detection can more easily and accurately detect the location and condition of the lesion.
  • the wide-angle infrared camera can also be rotated along the longitudinal direction of the diagnostic bed when it can be lifted up and down along the lifting arm; a vertical background frame is disposed in front of or behind the longitudinal direction of the diagnostic bed, and the background frame The wide-angle lens that is horizontally rotated with the wide-angle infrared camera is vertically opposite to each other; a human body rotation angle swivel disk is disposed in front of the background frame.
  • a shelter frame is disposed around the background frame, and a reference heat radiation source black body is disposed at an edge of the background frame.
  • the background frame is a semiconductor background temperature control plate, and the semiconductor background temperature control plate comprises a PID controller and a semiconductor refrigeration component electrically connected to the PID controller; and the semiconductor background temperature control plate further has a circulating wind a temperature sensor is disposed at an exit end of the circulating air duct, and a temperature sensor access end electrically connected to the temperature sensor is disposed on the PID controller; the PID controller and the semiconductor refrigeration component simultaneously communicate with a control interface Sexual connection.
  • the semiconductor background temperature control board further includes a DC power source and an isolated power source electrically connected to the DC power source.
  • the DC power source is electrically connected to the semiconductor refrigeration component, and the isolated power source is electrically connected to the PID controller.
  • the infrared imaging environment is standardized, so that the background temperature of the image is uniform and the image is more objective.
  • the temperature is measured by the black body calibration camera, the shelter frame is used to avoid the airflow interference in the thermal image, and the body rotation angle is used to facilitate the rotation. Operation, and the resulting images are accurate and easy to compare.
  • a wide-angle infrared camera as shown in FIG. 1 includes a wide-angle lens 10 electrically connected in sequence, an uncooled detector and a peripheral circuit module 12, and a field programmable gate array (FPGA: Field-Programmable) Gate Array) timing generation and infrared data processing circuit 14, transmission interface circuit module 16, and power supply circuit module 18; the power supply circuit module 18 is also coupled with an uncooled detector and peripheral circuit module 12, and an FPGA timing generation and infrared data processing circuit, respectively 14 electrical connection, using wide-angle lens 10, the imaging distance can be 1.5m, the half-length imaging distance is convenient, and the working space is greatly saved, which makes the imaging environment easier to control.
  • the wide-angle lens 10 is a wide-angle infrared thermal image lens.
  • the wide-angle infrared thermal image lens is a wide-angle infrared thermal image lens of a camera lens having a focal length shorter than a standard lens, a viewing angle larger than a standard lens, a focal length longer than a fisheye lens, and a viewing angle smaller than a fisheye lens.
  • the uncooling detector and the peripheral circuit module 12 of the present invention are electrically connected to the FPGA timing generation and infrared data processing circuit 14 through an A/D conversion circuit 13, and the A/D conversion circuit 13 is also connected to the power supply circuit module. 18 electrical connection.
  • the uncooled detector and the peripheral circuit module 12 can adopt an uncooled infrared detector, and the uncooled detector and the peripheral circuit module 12 provide parameters necessary for the uncooled infrared detector to operate, and the A/D conversion circuit 13
  • the analog output of the uncooled infrared detector is converted into a digital signal, which is input to the FPGA timing generation of the back end and processed by the infrared data processing circuit 14. Since the uncooled infrared detector does not require refrigeration, it has the advantage of high cost performance, and its small size, light weight, low power consumption, long working life of the whole machine, and also reduces maintenance and repair costs to a certain extent.
  • the FPGA timing generation and infrared data processing circuit 14 uses FPGA and hardware description language to realize the readout timing of the uncooled infrared detector signal, the non-uniformity correction of the infrared image data, the blind element replacement, and the compensation correction of the nonlinear distortion of the wide-angle lens 10. .
  • the invention can communicate with a PC by means of the transmission interface circuit module 16, for example, the transmission interface circuit module 16 is a transmission interface circuit module of USB2.0.
  • the USB2.0 transmission interface circuit module includes a USB2.0 interface chip embedded with a CPU, which can realize USB2.0 device initialization, device enumeration, and device configuration, thereby realizing communication with a PC, and realizing infrared heat in real time. Like an incoming PC.
  • the power circuit module 18 includes a plurality of power supply voltages, and can provide power supplies of 5V, 3.3V., and 1.5V for the entire device to ensure the normal operation of the wide-angle infrared camera. Therefore, the wide-angle infrared thermal imager of the present invention adopts a wide-angle infrared thermal image lens, and the half-length imaging distance is only 1.5 m. Due to the shortening of the imaging distance, the heat transfer loss is greatly reduced, and the thermal imaging signal is greatly enhanced, and the conventional heat is enhanced. Compared with the imager, the image quality is improved by more than 9 times, and the operation is convenient and easy to promote. At the same time, the required working space is small, and the imaging environment is easier to control.
  • the present invention also provides an infrared detecting system formed by using the wide-angle infrared camera as shown in FIG. 2, which includes a diagnostic bed 1 for a patient lying thereon, the wide-angle infrared camera 7
  • the wide-angle lens 10 is disposed directly above the diagnostic bed body 1, and the wide-angle infrared camera 7 and the diagnostic bed 1 are relatively horizontally slidable.
  • the traditional infrared detection of the patient's standing and changing to the flat is carried out for infrared detection, which greatly facilitates the localization caused by the occurrence of nerve pain, local pain, etc. due to standing.
  • Infrared detection is performed on patients with generalized paralysis, and the heat generated by muscle compression, muscle contraction, etc. due to standing, sputum, etc., is prevented from affecting the accuracy of infrared imaging results.
  • the wide-angle infrared camera 7 can be disposed above the diagnostic bed 1 through a bracket such as a one-arm rotating bracket, a multi-arm rotating bracket, or the like, and the wide angle is rotated by the horizontal rotation of the rotating bracket.
  • the infrared camera 7 performs whole body or local thermal imaging detection on the patient lying on the diagnostic bed 1; it can also be placed in the diagnosis by suspending the wide-angle infrared camera 7 and the diagnostic bed 1 Above the bed 1, through the relative horizontal sliding between the wide-angle infrared camera 7 and the diagnostic bed 1, the wide-angle infrared camera 7 is used to perform whole body or local thermal imaging detection on the patient lying on the diagnostic bed 1.
  • the wide-angle infrared camera 7 is disposed above the diagnostic bed 1 through a bracket 2 of a door frame structure, wherein the wide-angle infrared camera 7 is disposed under the door beam of the door frame structure;
  • the two fulcrums at the lower end correspond to the slide rails 9 on both sides of the diagnostic bed 1.
  • the bracket 2 realizes the infrared detection of the patient lying on the diagnostic bed 1 by the wide-angle infrared camera 7 on the bracket 2 by sliding on the slide rail 9, and the mounting position of the slide rail 9 can set the slide rail 9 to The position of both side edges of the bed 1 is diagnosed, or the slide rail 9 is disposed at the bottom of the diagnostic bed 1 by bending the lower end of the bracket 2; preferably, the slide rail 9 is provided on both sides of the diagnostic bed 1.
  • the wide-angle infrared camera 7 is fixed on the bracket 2 by a lifting arm 6, and can be driven by a spur gear, a turbine vortex, a bevel gear, or the like, or by hydraulic or electric starting. The wide-angle infrared camera 7 is lifted and lowered.
  • the infrared diagnosis of patients of different body types can be performed more humanized and scientifically.
  • two ergonomically designed breast body positioning holes 8 are formed in the diagnostic bed body 1, and a lower wide-angle infrared heat which is arranged along the center line of the two breast body position holes 8 is disposed below the breast body position hole 8.
  • the wide-angle lens 10 of the lower wide-angle infrared camera 19 faces upward; a breast thermal stimulation generator 17 is disposed at a position near the bottom of the diagnostic bed 1 near the breast-position hole 8.
  • the breast is subjected to cold or heat stimulation by the breast hot and cold stimulation generator.
  • the imaging of the breast mass after cold or thermal stimulation is bound to be different from that of the normal breast after cold or thermal stimulation; and the breast mass is stimulated by cold or heat.
  • the recovery time is inconsistent with the recovery time under normal conditions, so that it can be collected by thermal imaging, and the detection and detection can further accurately detect the location and condition of the lesion.
  • the wide-angle infrared camera 7 of the present invention can also be rotated along the longitudinal direction of the diagnostic bed 1 on the basis of the up-and-down movement of the lifting arm 6, which is mainly represented by the wide-angle infrared camera 7 and the lifting arm. 6 is connected by a universal turret or a longitudinal turret, so that the wide-angle infrared camera 7 is longitudinally rotated along the lifting arm 6; a vertical background frame 3 is disposed in front of or behind the longitudinal direction of the diagnostic bed 1 The background frame 3 is vertically opposed to the wide-angle lens 10 in which the wide-angle infrared camera 7 is horizontally rotated; a human body rotation angle swivel disk 4 is disposed in front of the background frame 3.
  • a standing infrared detection is arranged in front of or behind the diagnostic bed body 1, which shares a wide-angle infrared thermal imager 7 with the flat-bed infrared detection, and the patient stands on the rotary disk 4 by panning the wide-angle infrared camera 7
  • the wide-angle infrared camera 7 can be translated to the patient near the swivel disc 4 by lengthening the slide rail 9 , or the front and rear ends of the diagnostic bed 1 can be designed in advance to the swivel tray 4 . the distance.
  • the entire infrared detection system can perform flat-bed infrared imaging and standing infrared imaging separately, and compare and analyze the two infrared imaging images to more scientifically and accurately detect the location of the lesion.
  • the swivel disc 4 is convenient to operate, and the patient only needs to stand on the swivel disc 4, and the patient can be rotated by controlling the swivel disc 4, and the posture angle is relatively standard, and the correct comparison can be performed.
  • a shelter frame 30 is disposed around the background frame 3, and a reference heat radiation source black body is disposed at an edge of the background frame 3.
  • the shelter frame 30 can avoid detecting interference of the indoor airflow; the reference thermal radiation source is used as a standard temperature reference correction source, which is an ideal comparison standard for studying the performance of the actual object to absorb and emit radiant energy. .
  • the reference thermal radiation source black body can be mounted at the upper left or upper right corner of the background frame 3.
  • the background frame 3 is a semiconductor background temperature control plate, and the semiconductor background temperature control plate is further provided with a circulation air channel, and a temperature sensor (not shown) is mounted at the outlet end of the circulation air channel.
  • the semiconductor background temperature control panel includes a proportional-integral-derivative (PID) controller 21 and a semiconductor refrigeration component 22 electrically connected to the PID controller 21.
  • PID proportional-integral-derivative
  • a temperature sensor access terminal (not shown) electrically connected to the temperature sensor is provided on the PID controller 21. Further, the PID controller 21 and the semiconductor refrigeration component 22 are electrically connected to a control interface 23 at the same time.
  • the semiconductor background temperature control board further includes a DC power source 24 and an isolated power source 25 electrically connected to the DC power source 24, the DC power source 24 is a low voltage DC power source, and the semiconductor refrigeration component 22 is electrically The isolated power source 25 is electrically connected to the PID controller 21, and the isolated power source 25 is connected to a 220V voltage 26 at one end.
  • the semiconductor background temperature control board is light in weight, non-polluting, and has many advantages such as convenient transportation and installation, low failure rate, etc., which can make the infrared thermal image background temperature uniform, and the temperature standard can be controlled by the semiconductor background temperature control board. Between 27 ° C and 29 ° C, the background temperature is standardized and can be correctly compared.
  • the DC power source 24 supplies power to the semiconductor refrigeration unit 22 for cooling
  • the PID controller 21 collects temperature data of the semiconductor refrigeration unit 22 for processing by the temperature sensor, and the output control signal controls the semiconductor refrigeration unit 22 to operate through the control interface 23 to achieve control.
  • Infrared thermography background temperature constant temperature effect The technical solutions provided by the embodiments of the present invention are described in detail above.

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Abstract

L'invention concerne un imageur infrarouge thermique panoramique, comprenant une lentille panoramique (10), un détecteur non refroidi et module de circuit périphérique (12), un circuit de traitement de séquence de temporisation FPGA et de données infrarouges (14), un module de circuit d'interface de transmission (16) et un module de circuit de source d'alimentation (18) connectés électriquement de façon successive. Le module de circuit de source d'alimentation (18) est connecté électriquement respectivement au détecteur non refroidi et module de circuit périphérique (12) et au circuit de traitement de séquence de temporisation FPGA et de données infrarouges (14). La lentille panoramique (10) est une lentille d'imageur infrarouge thermique panoramique. Un système de détection infrarouge employant l'imageur infrarouge thermique panoramique ci-dessus comprend un corps de lit de diagnostic (1) pour qu'un patient s'allonge sur celui-ci. La lentille panoramique (10) de l'imageur infrarouge thermique panoramique est disposée directement au-dessus du corps de lit de diagnostic (1), et l'imageur infrarouge thermique panoramique et le corps de lit de diagnostic (1) peuvent coulisser horizontalement l'un par rapport à l'autre. L'image thermique peut réaliser une imagerie infrarouge à courte distance, et le patient peut être testé d'une manière inclinée, ce qui rend commode la détection de différentes sortes de patient, et améliore la précision de l'imagerie infrarouge.
PCT/CN2012/082901 2011-10-14 2012-10-13 Imageur infrarouge thermique panoramique et système de détection infrarouge ayant celui-ci WO2013053335A1 (fr)

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CN 201120392587 CN202270019U (zh) 2011-10-14 2011-10-14 采用广角镜头的医用远红外热成像设备

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CN106124065A (zh) * 2016-08-09 2016-11-16 首航节能光热技术股份有限公司 基于红外测温的光热塔式吸热器堵管探测应对控制系统
CN106500849A (zh) * 2016-12-09 2017-03-15 国家电网公司 一种红外成像测温传感器
CN112641516A (zh) * 2020-12-07 2021-04-13 付天龙 一种病人诊断用远程医疗体检装置、远程医疗体验方法

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CN202270019U (zh) * 2011-10-14 2012-06-13 吴士明 采用广角镜头的医用远红外热成像设备
CN102920429B (zh) * 2012-10-07 2014-12-03 吴士明 乳腺病诊疗一体化装置
CN102908124B (zh) * 2012-10-13 2014-09-24 吴士明 具有广角红外热像镜头的红外检测系统
CN103385734B (zh) * 2012-11-15 2016-08-24 广州呼研所红外科技有限公司 利用红外热像导引超声的双重检查综合诊断仪及该诊断仪的检测方法
CN103321129A (zh) * 2013-06-18 2013-09-25 中山市拓维电子科技有限公司 基于3g网络的红外热像的远程路面施工诊断系统及方法

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CN202275290U (zh) * 2011-10-14 2012-06-13 吴士明 红外摄像标准化成像环境控制装置
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