CN1967180B - Infrared thermal-image data real-time compression/decompression method and infrared temperature monitoring device and system - Google Patents
Infrared thermal-image data real-time compression/decompression method and infrared temperature monitoring device and system Download PDFInfo
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- CN1967180B CN1967180B CN2006100352167A CN200610035216A CN1967180B CN 1967180 B CN1967180 B CN 1967180B CN 2006100352167 A CN2006100352167 A CN 2006100352167A CN 200610035216 A CN200610035216 A CN 200610035216A CN 1967180 B CN1967180 B CN 1967180B
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Abstract
An infrared thermal imaging real-time compression/decompression method and the infrared temperature monitoring device and system based on the network and embedded computer. The compression method is: first acquisition, obtaining difference between the fore-and-aft two infrared thermal imaging data, and processing the difference with vectoring, encoding and compressing. The decompression method isopposite. The computer of the device is embedded in the infrared thermal imaging device, configured with the network interface of self-defined IP address. The system consists of more than one infrared thermal imaging temperature monitoring devices, a number of personal computers and/or switches, the servers, which interconnecting with the network. The invention is low power consumption, and can real-time, long-range, rapid transmission, manage all temperature data and infrared thermal image, and it also has the advantages of strong anti-jamming capability and wide applicable range, compatiblewith existing standard network equipments, and easy for networking.
Description
Technical field
The present invention relates to computing machine and infrared thermal imaging technique field, the infrared temperature monitoring device and the system of particularly a kind of infrared thermal-image data real-time compression/decompression method, Network Based and embedded computer.
Background technology
Along with the develop rapidly of infrared thermal imaging technique and electronic computer technology, the photoelectric image treatment technology has obtained using widely at the numerous areas of national economy.Wherein, infrared thermal imaging technique is to utilize the temperature contrast of object to carry out imaging, thereby in production run such as monitored in real time at the field, we can see the object surfaces Temperature Distribution clearly, thereby in time judge the duty of object.Visible images utilizes photo video equipment to obtain, and can see the visual pattern of testee exactly, accurately measures the grid bearing of object, thereby is used widely in routine work and life.The former advantage is to determine the temperature regime of target timely and accurately, but can not differentiate exactly target; Though the latter can accurately differentiate target, do not reflect the temperature regime of object.As: the SARS virus infectiousness is extremely strong, and the mankind are constituted grave danger, and it shows as high temperature, high heat in morbidity in human body, in time finds that in various occasions (as the square) fever patient propagates the control epidemic situation and have crucial meaning.The existing infrared thermal imaging technique of utilization can in time be found fever patient but can't accurately locate that utilize visible images can accurately clearly catch on-site target, but can't determine that who generate heat, both have both advantages and disadvantages.It is reported, except that Chinese patent CN1546960 disclosed a kind of same category of device that has above-mentioned both advantages concurrently (infra-red thermal imaging image and the real-time display control device of visible images composite video) of the applicant's application, still acomia existing same technology at home and abroad disclosed.The part but the disclosed technical scheme of this patented claim still comes with some shortcomings:
1, because the purposes of infrared thermal imagery equipment has determined its use occasion complexity, even environment is abominable, thus must be lightly, just move, and satisfy the standard seal condition of IP54 or IP67, satisfy IP54 or IP67 air-proof condition, then the power consumption of product is necessary little, heat-sinking capability is eager to excel in whatever one does.Because the restriction of aspects such as power consumption, volume, heat radiation, cost, traditional PC or industrial computer are difficult to satisfy the requirement of equipment.So existing thermal infrared imager mostly is to adopt single-chip microcomputer to make.Because a little less than the processing power of single-chip microcomputer, and infrared measurement of temperature and imaging processing need very big data-handling capacity, thereby are forced to adopt a plurality of singlechip chip associated treatment.Like this, even interface all needs oneself exploitation, and the development of product is certainly will difficulty big, the cycle is long, has reduced the market competitiveness.Owing to can utilize software and hardware resources few, very difficulty of expanded function.
2, infrared thermal imaging technique has that data volume is big, thermometric computing formula complexity, analyzes the characteristics that diversity, data must can't harm transmission.Owing to be subjected to hardware technology, the particularly restriction of network technical development, the thermal imaging product that is used for industrial process control and monitoring purposes of producing in the past has only vision signal output and the output of RS232/485 signal usually, signal is weak, transmission speed is slow and distance is short, thereby can not directly carry out Network Transmission.Because infrared data computation amount is very big, and infrared data must can't harm transmission, adopt the straight-forward network transmission manner, cause great burden can for system and network, satisfy the requirement of the above speed of per second 50Hz, do not come over even if adopt state-of-the-art embedded type CPU also to handle, general single-chip microcomputer or CPU are just less qualified to do it.So just, can seriously restrict the performance of product, the temperature data that makes the prior art thermal imaging system collect can not in real time, intactly carry out transmission of network online data and data base administration, analysis, processing.How can utilize current state-of-the-art embedded computer, can the temperature data that makes the prior art thermal imaging system collect in real time, intactly carry out transmission of network online data and data base administration, analysis, processing? this is a difficult problem!
Summary of the invention
One of purpose of the present invention provides a kind of infrared thermal-image data real-time compression/decompression method, and is big to solve the infrared thermal-image data computational processing, needs the problem of harmless transmission.
Another object of the present invention is that design a kind ofly can overcome the existing defective of prior art, not only can carry out image, temperature data acquisition and processing to target accurately and rapidly by infrared thermal imagery by real-time online, also be convenient to infrared temperature monitoring device by the Network Based and embedded computer of network and the online transmission of data-base remote, analysis, management.
The 3rd purpose of the present invention is to utilize the infrared temperature monitoring system of a kind of Network Based and embedded computer of said method and device design, so that get infrared thermal imagery and/or visible light image information by network and the online transmission of data-base remote, analysis, administrative institute.
Technical scheme of the present invention is as follows:
A kind of infrared thermal-image data real-time compression/decompression method, it is a kind of stream medium data real-time compression/decompression method, comprises compression method and decompressing method:
---compression method is: 1. by the embedded computer collection, keep preceding width of cloth infrared thermal-image data from thermal infrared imager; 2. gather current width of cloth infrared thermal-image data from thermal infrared imager; 3. two width of cloth infrared thermal-image datas is poor before and after asking; 4. according to cut-and-dried vector quantization table the difference of gained infrared thermal-image data is carried out vectorized process; 5. encode according to the infrared thermal-image data of coding schedule after to vectorized process; 6. packed data; 7. packed data output;
---decompressing method is: 1. computing machine is stored the packed data that receives; 2. utilize coding schedule to make packed data be reduced to original encoding; 3. the coded data after utilizing the vector quantization table to reduction is carried out anti-vectorized process; 4. utilize the preceding width of cloth infrared thermal-image data of infrared thermal imagery difference data contrast of anti-vectorized process gained to obtain current width of cloth infrared thermal-image data; 5. the image processing module that computing machine is delivered in the current width of cloth infrared thermal-image data output of gained is handled, is shown.
A kind of device for detecting temperature comprises computing machine and infra red thermograph, it is characterized in that described computing machine is the embedded computer that is embedded in the described infra red thermograph housing; On infra red thermograph, be provided with 16 bit digital output interfaces, on the data-interface of computing machine, be connected with and be used for data collecting card that 16 bit digital view data of infra red thermograph output are gathered; On the storage medium of computer-internal, store the program controling module, temperature measurement module, image processing module and the display module that constitute by the data command code, also be provided with on computers can the whole temperature datas of the above speed real-time Transmission of 16Bit, 50Hz network interface; Infrared thermal image technique in described Flame Image Process and the display module and display module contain the infrared thermal imagery stream medium data Real Time Compression module that with good grounds following method is provided with: 1. by the embedded computer collection, keep preceding width of cloth infrared thermal-image data from thermal infrared imager; 2. gather current width of cloth infrared thermal-image data from thermal infrared imager; 3. two width of cloth infrared thermal-image datas is poor before and after asking; 4. according to cut-and-dried vector quantization table the difference of gained infrared thermal-image data is carried out vectorized process; 5. encode according to the infrared thermal-image data of coding schedule after to vectorized process; 6. packed data; 7. packed data output.
Described network interface be can self-defined IP address RJ45 integration standard interface.
The CPU of described embedded computer is a kind of core processor based on MIPS, and dominant frequency is greater than 500MHz.
More particularly, described CPU is 32Bit technical grade AU1200 type CPU, and embedding has WinCE operating system; The storage medium of described embedded computer inside is the DDR internal memory more than or equal to 64M, and system bus is 200MHz.
In the described housing or also be provided with the visible light camera that can select dress outward, on the data-interface of described embedded computer corresponding be provided with to be used for the video that the view data that visible light camera is exported is gathered pounced on catch card.
Described visible light camera is CCD or cmos camera; On described computing machine, also be provided with the sensor interface that is used for linking to each other with temperature sensor that measuring temperature basis is proofreaied and correct, the function control interface of be used to focus Electric Machine Control, the control of light hurdle, infrared imaging module controls, display interface device, the 10/100M Ethernet interface and the keyboard interface that are connected with RJ45 integration standard interface.
The temperature sensor that described measuring temperature basis is proofreaied and correct is a DS 18B20 temperature sensor; Be connected with removable mass storage and USB, GSM/GPRS, RS232/ blue tooth interface Peripheral Interface on computers.
A kind of infrared temperature monitoring system is characterized in that this system is made up of more than one described device for detecting temperature, number of personal computers and/or switch, server, and is interconnected by LAN (Local Area Network) and/or internet therebetween; Be provided with infrared thermal image technique, display module in personal computer, contain the infrared thermal imagery stream medium data Real Time Compression module that with good grounds following method is provided with in infrared thermal image technique, the display module: 1. computing machine is stored the packed data that receives; 2. utilize coding schedule to make packed data be reduced to original encoding; 3. the coded data after utilizing the vector quantization table to reduction is carried out anti-vectorized process; 4. utilize the preceding width of cloth infrared thermal-image data of infrared thermal imagery difference data contrast of anti-vectorized process gained to obtain current width of cloth infrared thermal-image data; 5. the image processing module that computing machine is delivered in the current width of cloth infrared thermal-image data output of gained is handled, is shown; In server, be provided with infrared thermal image technique, display module and image database management module.
Device for detecting temperature of the present invention is owing to adopted infrared thermal imagery stream medium data real-time compression/decompression method, and it is big to have solved the infrared thermal-image data computational processing, must the harmless basic problem of transmitting.
Apparatus of the present invention are owing to adopted embedded computer and data-handling capacity based on the MIPS core processor low in energy consumption, that processing power is strong strong, have multimedia and quicken the system interface of function, and computing machine and thermal infrared imager be integrated, not only satisfy the requirement that the thermal infrared imager data processing amount is big, volume is little, light, also satisfied the requirement of IP54 or IP67 air-proof condition.
Apparatus of the present invention and system can be based on the integration standard RJ45 interfaces of the self-defined IP of TCP/IP network address owing to having adopted, not only can show in real time, monitoring, remote transmission is infrared and/or visible images, can also real-time online by infrared thermal imagery accurately and rapidly to target by network and data-base remote on-line analysis, management, have: data rate is fast, can the whole temperature datas of real-time Transmission (16Bits), long transmission distance, antijamming capability is strong, applied widely, compatible mutually with the existing standard network equipment, advantages such as networking convenience.
Description of drawings
Fig. 1 is the schematic flow sheet of infrared thermal imagery media stream in real time compression/decompression method of the present invention.
Fig. 2 is the computer circuits schematic diagram of apparatus of the present invention.
Fig. 3 is the network diagram of system of the present invention.
Embodiment
A kind of infrared thermal-image data real-time compression/decompression method, as shown in Figure 1, it is a kind of stream medium data real-time compression/decompression method, comprises compression method and decompressing method:
---compression method is: 1. by the embedded computer collection, keep preceding width of cloth infrared thermal-image data from thermal infrared imager; 2. gather current width of cloth infrared thermal-image data from thermal infrared imager; 3. two width of cloth infrared thermal-image datas is poor before and after asking; 4. according to cut-and-dried vector quantization table the difference of gained infrared thermal-image data is carried out vectorized process; 5. encode according to the infrared thermal-image data of coding schedule after to vectorized process; 6. packed data; 7. packed data output;
---decompressing method is: 1. computing machine is stored the packed data that receives; 2. utilize coding schedule to make packed data be reduced to original encoding; 3. the coded data after utilizing the vector quantization table to reduction is carried out anti-vectorized process; 4. utilize the preceding width of cloth infrared thermal-image data of infrared thermal imagery difference data contrast of anti-vectorized process gained to obtain current width of cloth infrared thermal-image data; 5. the image processing module that computing machine is delivered in the current width of cloth infrared thermal-image data output of gained is handled, is shown.
A kind of infrared temperature monitoring device of Network Based and embedded computer as shown in Figure 2, comprises computing machine 1 and infra red thermograph.Computing machine 1 is an embedded computer, is embedded in the housing of infra red thermograph.On infra red thermograph, be provided with 16 bit digital output interfaces, on the data-interface of computing machine, be connected with and be used for data collecting card 2 that 16 bit digital view data of infra red thermograph output are gathered; On the storage medium of computer-internal, store the program controling module, temperature measurement module, image processing module and the display module that constitute by the data command code.Also be provided with on computers can the whole temperature datas of the above speed real-time Transmission of 16Bit, 50Hz network interface, network interface is a kind of TCP/IP of being based on network, can self-defined IP address, RJ45 integration standard interface that can the whole temperature datas of the above speed real-time Transmission of 16Bit, 50Hz.Infrared thermal image technique in Flame Image Process and the display module and display module contain the infrared thermal imagery stream medium data Real Time Compression module that with good grounds preceding method is provided with.
Concrete present embodiment:
The CPU of embedded computer is a kind of 32Bit technical grade core processor based on MIPS, and model is the AU1200 type, and dominant frequency is greater than 500MHz, and it has been embedded in WinCE operating system, the supporting database management.The storage medium of embedded computer inside is the DDR internal memory more than or equal to 64M, and system bus is 200MHz.With database combination, this systemic-function is powerful, can carry out accurate thermometric, analysis and judgement to on-site target more easily.
Also be provided with the visible light ccd video camera in the housing, on the data-interface of embedded computer corresponding be provided with to be used for the video that the view data of visible light camera output is gathered pounced on catch card 3.
Data collecting card and video are pounced on to catch and are had the input interface that is used to the CCD visible camera interface gathering the infra red thermograph of 16Bit infrared temperature data and can gather visible images on the card 2,3.
Also be provided with the sensor interface 5 that is used for linking to each other on computers with measuring temperature basis Tc sensor, the function control interface 6 of be used to focus Electric Machine Control, the control of light hurdle, infrared imaging module controls, display interface device 7, the 10/100M Ethernet interface 8 and the keyboard interface 9 that are connected with RJ45 integration standard interface.
Temperature sensor can be selected DS 18B20 temperature sensor.Also be connected with the removable mass storage 10 of CF cassette and USB, GSM/GPRS, RS232/ blue tooth interface 15 on computers, so that increase peripheral hardware.
The present invention utilizes the infrared temperature monitoring system of the Network Based and embedded computer that said method and device constitute by the infrared thermal imaging temperature monitoring analytical equipment 11 more than 3,2 personal computers 12 (or claiming client computer), 1 switch 13 and 1 station server 14 are formed, and be interconnected by LAN (Local Area Network) and/or internet therebetween.In personal computer, be provided with infrared thermal image technique, display module, contain the real-time decompression module of infrared chart stream medium data in infrared thermal image technique, the display module.
Claims (9)
1. infrared thermal-image data real-time compression/decompression method, it is a kind of stream medium data real-time compression/decompression method, comprises compression method and decompressing method:
---compression method is: 1. by the embedded computer collection, keep preceding width of cloth infrared thermal-image data from thermal infrared imager; 2. gather current width of cloth infrared thermal-image data from thermal infrared imager; 3. two width of cloth infrared thermal-image datas is poor before and after asking; 4. according to cut-and-dried vector quantization table the difference of gained infrared thermal-image data is carried out vectorized process; 5. encode according to the infrared thermal-image data of coding schedule after to vectorized process; 6. packed data; 7. packed data output;
---decompressing method is: 1. computing machine is stored the packed data that receives; 2. utilize coding schedule to make packed data be reduced to original encoding; 3. the coded data after utilizing the vector quantization table to reduction is carried out anti-vectorized process; 4. utilize the preceding width of cloth infrared thermal-image data of infrared thermal imagery difference data contrast of anti-vectorized process gained to obtain current width of cloth infrared thermal-image data; 5. the image processing module that computing machine is delivered in the current width of cloth infrared thermal-image data output of gained is handled, is shown.
2. a device for detecting temperature comprises computing machine (1) and infra red thermograph, it is characterized in that described computing machine (1) is for being embedded in the embedded computer (1) in the described infra red thermograph housing; On infra red thermograph, be provided with 16 bit digital output interfaces, on the data-interface of computing machine, be connected with and be used for data collecting card (2) that 16 bit digital view data of infra red thermograph output are gathered; On the storage medium of computer-internal, store the program controling module, temperature measurement module, image processing module and the display module that constitute by the data command code, also be provided with on computers can the whole temperature datas of the above speed real-time Transmission of 16Bit, 50Hz network interface; Infrared thermal image technique in described Flame Image Process and the display module and display module contain the infrared thermal imagery stream medium data Real Time Compression module that with good grounds following method is provided with: 1. by the embedded computer collection, keep preceding width of cloth infrared thermal-image data from thermal infrared imager; 2. gather current width of cloth infrared thermal-image data from thermal infrared imager; 3. two width of cloth infrared thermal-image datas is poor before and after asking; 4. according to cut-and-dried vector quantization table the difference of gained infrared thermal-image data is carried out vectorized process; 5. encode according to the infrared thermal-image data of coding schedule after to vectorized process; 6. packed data; 7. packed data output.
3. device for detecting temperature according to claim 2 is characterized in that described network interface is RJ45 integration standard interface that can self-defined IP address.
4. according to claim 2 or 3 described device for detecting temperature, the CPU that it is characterized in that described embedded computer is a kind of core processor based on MIPS, and dominant frequency is greater than 500MHz.
5. device for detecting temperature according to claim 4 is characterized in that described CPU is 32Bit technical grade AU1200 type CPU, and embedding has WinCE operating system; The storage medium of described embedded computer inside is the DDR internal memory more than or equal to 64M, and system bus is 200MHz.
6. device for detecting temperature according to claim 5, it is characterized in that in the described housing or also be provided with the visible light camera that can select dress outward, on the data-interface of described embedded computer corresponding be provided with to be used for the video that the view data that visible light camera is exported is gathered pounced on catch card (3).
7. device for detecting temperature according to claim 6 is characterized in that described visible light camera is CCD or cmos camera; On described computing machine, also be provided with the sensor interface (5) that is used for linking to each other with temperature sensor that measuring temperature basis is proofreaied and correct, function control interface (6), display interface device (7), the 10/100M Ethernet interface (8) that is connected with RJ45 integration standard interface and the keyboard interface (9) of be used to focus Electric Machine Control, the control of light hurdle, infrared imaging module controls.
8. device for detecting temperature according to claim 7 is characterized in that described temperature sensor is the DS18B20 temperature sensor; Be connected with removable mass storage (10) and USB, GSM/GPRS, RS232/ blue tooth interface Peripheral Interface (15) on computers.
9. infrared temperature monitoring system that the device that utilizes claim 2 constitutes, it is characterized in that this system is made up of more than one described device for detecting temperature (11), number of personal computers (12) and/or switch (13), server (14), interconnected by LAN (Local Area Network) and/or internet therebetween; Be provided with infrared thermal image technique, display module in personal computer, contain the infrared thermal imagery stream medium data Real Time Compression module that with good grounds following method is provided with in infrared thermal image technique, the display module: 1. computing machine is stored the packed data that receives; 2. utilize coding schedule to make packed data be reduced to original encoding; 3. the coded data after utilizing the vector quantization table to reduction is carried out anti-vectorized process; 4. utilize the preceding width of cloth infrared thermal-image data of infrared thermal imagery difference data contrast of anti-vectorized process gained to obtain current width of cloth infrared thermal-image data; 5. the image processing module that computing machine is delivered in the current width of cloth infrared thermal-image data output of gained is handled, is shown; In server (14), be provided with infrared thermal image technique, display module and image database management module.
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| US10091440B1 (en) | 2014-05-05 | 2018-10-02 | Lockheed Martin Corporation | System and method for providing compressive infrared imaging |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101823496B (en) * | 2010-04-16 | 2012-08-22 | 北京清网华科技有限公司 | Motor car detecting method |
| CN102880635B (en) * | 2012-08-02 | 2016-05-04 | 杭州务实科技有限公司 | Generate a kind of method of infrared measurement of temperature data file |
| CN106428109B (en) * | 2016-08-25 | 2019-12-17 | 南京铁道职业技术学院 | Locomotive axle temperature display alarm device based on single chip microcomputer |
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