CN103974039B - Intelligent infrared thermal imaging and high definition visible ray two-waveband video monitoring system - Google Patents
Intelligent infrared thermal imaging and high definition visible ray two-waveband video monitoring system Download PDFInfo
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Abstract
The present invention provides a kind of intelligent infrared thermal imaging and high definition visible ray two-waveband video monitoring system, it is characterised in that including：Main control circuit unit, high definition visual light imaging unit, thermal imaging member, HD SDI HD videos process circuit, HD SDI HD videos output interface, SD video hand-off process circuit, SD video processing circuits, CVBS SDs video output interface, control interface and light intensity sensor process circuit；Main control circuit unit is responsible for receiving command information from control interface or receives environment light intensity signal from light intensity sensor process circuit, and control high definition visual light imaging unit to carry out high definition visible ray digital video and the switching of SD visible light video, and control SD video hand-off process circuit carries out the switching of SD visible light video and infrared thermal imaging SD video.Round-the-clock video monitoring can be achieved in the present invention, and provides visible ray high-definition video monitoring function, and infrared thermal imaging monitoring function.
Description
Technical field
The present invention relates to video monitoring system, the monitoring system that especially a kind of infrared thermal imaging is combined with visual light imaging
System.
Background technology
Current video monitoring system is mainly carried out by the way of visible light camera and direct surveillance, video recording are combined
Daily security protection, but because visible light camera is under conditions of bad weather or illumination are relatively low, disturbed it is difficult to filter out
To useful video image, given a discount hence in so that whole prevention ability of the safety-protection system under night or severe weather conditions is big
Button.In this case, infrared thermal imaging technique is so that its operating distance is remote, penetration capacity is strong, can recognize the advantages such as concealed target
Safety-security area is introduced into, the one's share of expenses for a joint undertaking as monitoring field.
Then, the resolution ratio of current infrared thermal imaging camera only up to far can not be reached to 300,000 pixels or so
Current requirement of the field of video monitoring to high-definition monitoring.On the other hand, high-definition video monitoring field several years ago is substantially by network
High definition is exclusive all over the world, yet with reasons such as network bandwidth deficiency, encoding and decoding technique bottlenecks, has also gradually highlighted high-definition network
Some places not fully up to expectations of video monitoring product.
To sum up apparently, how effectively high-definition camera and infrared thermal imaging technique to be combined together and plays maximum effect
It is the key point for realizing high-quality video monitoring.
The content of the invention
Taken the photograph it is an object of the invention to provide a kind of high definition visible ray based on high-definition digital component serial interface HD-SDI
The dual-band infrared night vision instrument system that camera becomes one with infrared thermal imaging unit, can carry out the remote control management, and
And can easily and flexibly switch high definition visible light camera video and infrared thermal imaging video, and switching high definition visible ray is taken the photograph
Camera video and SD analog video.The technical solution adopted by the present invention is：
A kind of intelligent infrared thermal imaging and high definition visible ray two-waveband video monitoring system, it is characterised in that including：Master control
Circuit unit, high definition visual light imaging unit, thermal imaging member, HD-SDI HD videos process circuit, HD-SDI HD videos
Output interface, SD video hand-off process circuit, SD video processing circuits, CVBS SDs video output interface, control interface
Circuit and light intensity sensor process circuit；
The main control circuit unit connection high definition visual light imaging unit, SD video hand-off process circuit, SD video
Process circuit, control interface and light intensity sensor process circuit；Be responsible for from control interface receive command information or
Person receives environment light intensity signal from light intensity sensor process circuit, and controls high definition visual light imaging unit to carry out high definition visible ray
Digital video and the switching of SD visible light video, and control SD video hand-off process circuit carry out SD visible light video
With the switching of infrared thermal imaging SD video；
The high definition visual light imaging unit be used for according to different control instructions generate high definition visible light video signal or
SD visible light video signal；
The HD-SDI HD videos process circuit is responsible for receiving the high definition video steaming of high definition visual light imaging unit output,
And generate the high-definition digital video signal of HD-SDI interface standards；
The thermal imaging member is used to generate infrared thermal imaging SD vision signal；
The SD video hand-off process circuit is responsible for reception SD visible light video signal and regarded with infrared thermal imaging SD
Frequency signal, and according to different instruction output wherein vision signal all the way；
The SD video processing circuits is responsible for receiving the SD visible light video letter of high definition visual light imaging unit output
Number or the infrared thermal imaging SD vision signal that produces of thermal imaging member, and generate the CVBS analog video signals of standard.
Further, control interface uses RS485 interface circuits.
Intelligent infrared thermal imaging and the important process process of high definition visible ray two-waveband video monitoring system are as described below：
1）The intensity letter for the illuminance that main control circuit unit is received according to the sensor from light intensity sensor process circuit
Number, send switching signal to SD video hand-off process circuit；Or according to the different switchings received from RS485 interface circuits
Instruction, sends switching signal to SD video hand-off process circuit or sends switching signal to high definition visual light imaging unit.
2）High definition visual light imaging unit is received after corresponding switching control instruction, can be achieved quick visible in high definition
Switched between light digital video and SD visible analog video.
3）SD video hand-off process circuit is received after corresponding switching control instruction, can be achieved quick red in SD
Switched between outer thermal imaging SD analog video and SD visible analog video.
The invention has the advantages that：
1. use HD-SDI high definition visible light cameras, can be achieved high-definition image without delay real-time Transmission, high-definition image without
Loss is undistorted；
2. round-the-clock video monitoring can be realized, and provide visible ray high-definition video monitoring function and more preferable monitoring effect.
3 use video frequency switching module, can seamlessly visible ray and infrared thermal imaging video, visible ray HD video with can
The switching seen between the clear video of cursor, and selectively monitor video can be transmitted and be stored, reduction transmission bandwidth and
Video memory space is saved, system cost is reduced.
Brief description of the drawings
Fig. 1 is structure composition schematic diagram of the invention.
Fig. 2 is the circuit diagram of the main control circuit unit of the present invention.
Fig. 3 is the circuit diagram of the HD-SDI HD video process circuits of the present invention.
Fig. 4 is the circuit diagram of the SD video processing circuits of the present invention.
Fig. 5 is the circuit diagram of the SD video hand-off process circuit of the present invention.
Fig. 6 is the circuit diagram of the light intensity sensor process circuit of the present invention.
Fig. 7 is workflow diagram of the invention.
Embodiment
With reference to specific drawings and examples, the invention will be further described.
As shown in figure 1, intelligent infrared thermal imaging proposed by the invention and high definition visible ray two-waveband video monitoring system,
Including：Main control circuit unit, high definition visual light imaging unit, thermal imaging member, HD-SDI HD videos process circuit, HD-SDI
HD video output interface, SD video hand-off process circuit, SD video processing circuits, CVBS SDs video output interface,
Control interface and light intensity sensor process circuit.
Wherein control interface can be using the RS485 interface circuits shown in Fig. 1.Thermal imaging member uses infrared thermal imagery
Instrument.High definition visual light imaging unit can use highest resolution in 720p or more than 1080i high definition visible light camera, and
Its resolution ratio can be adjusted according to external control signal, such as can also be adjusted to 480p resolution ratio and carry out SD shooting.
Main control circuit unit connection high definition visual light imaging unit, SD video hand-off process circuit, SD Video processing
Circuit, RS485 interface circuits and light intensity sensor process circuit；Be responsible for from RS485 interface circuits receive command information or
Environment light intensity signal is received from light intensity sensor process circuit, and controls high definition visual light imaging unit to carry out high definition visible ray number
The switching of word video and SD visible light video, and control SD video hand-off process circuit carry out SD visible light video with
The switching of infrared thermal imaging SD video.
As shown in Fig. 2 main control circuit unit is mainly made up of the STM32F103 microprocessors of ST Microelectronics.
U104 is the master chip STM32F103 of main control circuit unit, is the microprocessor based on Cortex-M3 kernels, completes all controls
Make the realization of instruction and the conversion of agreement.Wherein RXD/TXD interfaces connect serial ports conversion chip, and UART1 interfaces connection high definition can
See photoimaging unit, SPI interface connection SD video processing circuits, I2C interfaces connect light intensity sensor process circuit etc., V_
SEL signals connection SD video hand-off process circuit etc..U101 is low dropout voltage regulator, and using AMS1177-3.3, producer is
ams-semitech.U102（CAT706S）Reset control function is provided.U103 is RS485 interface conversion chip RSM3485CHT,
External RS485 interfaces.
HD-SDI HD video process circuits are responsible for receiving the high definition video steaming of high definition visual light imaging unit output, and raw
Into the high-definition digital video signal of HD-SDI interface standards.Its internal circuit is as shown in figure 3, U201 is mainly realized serial video
Signal is converted into the HD-SDI high-definition digital video signals of standard.U201 uses National Semiconductor（By Dezhou
Instrument is purchased）Deserializer LMH0341.LVDS interface（RXOUTP/N[0:4],RXCLKOUT_P/N）Believe for high definition serial video
Number input interface, interface connection high definition visual light imaging unit video output interface.SDA/SDC interfaces are deserializer U201's
Control interface, the U104 of interface connection main control circuit unit I2C interfaces.TXDOUT_P/N is standard HD-SDI HD videos
Signal output interface.
SD video processing circuits be responsible for receiving the output of high definition visual light imaging unit SD visible light video signal or
The infrared thermal imaging SD vision signal that thermal imaging member is produced, and generate the CVBS analog video signals of standard.Its circuit is such as
Shown in Fig. 4.U301 is vision signal Sync Separator Chip LM1881, and U302 is the special driving cores of OSD that Zhou Ligong companies produce
Piece SD1000, realizes video character superposition function, and U303 mainly realizes the control function of U302 black balance, and U304 is bilateral
Road video amplification chip, is produced by JRC companies, is only needed to herein with a passage.
SD video hand-off process circuit is responsible for receiving SD visible light video signal and infrared thermal imaging SD video letter
Number, and according to different instruction output wherein vision signal all the way.Its circuit is as shown in Figure 5.VIDEO_NOMAL signals are that high definition can
See the SD visible light video signal that photoimaging unit is produced；VIDEO_INFRARED is that the SD that thermal imaging member is produced is infrared
Vision signal；VIEDO_SELECT is video switch-over control signal, is connected with the main control chip U104 of main control circuit unit.
U401 is binary channels single-pole double-throw switch (SPDT) chip ADG736, is produced by ANALOG DEVICES companies.Only need to herein with one
Passage.
Light intensity sensor process circuit is mainly detection light intensity signal, and is connected by I2C interfaces with main control circuit unit
Connect, wherein U501 is light intensity sensor, realizes the detection of light intensity.Its circuit diagram is as shown in Figure 6.U501 is passed using ambient light intensity
Sensor integrated circuit BH1750FVI, is produced by Japanese ROHM semiconductors group.SCL/SDA is the signal of I2C interfaces, connection master
Control circuit unit U104 I2C interfaces.
The summary of two kinds of video switch modes, pattern one when here is present invention work：Automatically switch；Pattern two：Manually
Switching.As shown in fig. 7, following specifically describe for operation：
1：When pattern is automatic mode, daytime is determined whether by light intensity sensor, when being judged as daytime, entered
4th step, otherwise, into the 3rd step；
2：When pattern is manual mode, by RS485 interface control instructions, judge whether to need to start thermal imagery
Instrument, if it is determined that need to start, then into the 3rd step, otherwise, into the 4th step；
3：Thermal infrared imager is opened, visible light camera is closed, and enter the 5th step；
4：Thermal infrared imager is closed, visible light camera is opened, and enter the 6th step；
5：Infrared photography pattern is switched to, SD analog video signal is exported；
6：Judge whether to start HD video output mode, if it is, into the 7th step, otherwise, into the 8th step；
7：HD video output mode is switched to, high-definition digital video signal is exported；
8：SD video output mode is switched to, SD analog video signal is exported.
Some involved terms is explained as follows in the present invention：
CVBS：Composite Video Broadcast Signal, composite video signal.
HD-SDI：HD-serial digital interface, high-definition digital component serial interface.
HD video refers to vision signal more than 720p or 1080i definition.SD video is resolution ratio less than above-mentioned
The vision signal of standard, resolution ratio is in 400 lines or so（Usually 480p）.
OSD is On Screen Display abbreviation, and OSD cores are that occur screen of the chip in display using character
The character of needs is shown on curtain.
Claims (2)
1. a kind of intelligent infrared thermal imaging and high definition visible ray two-waveband video monitoring system, it is characterised in that including：Master control electricity
Road unit, high definition visual light imaging unit, thermal imaging member, HD-SDI HD videos process circuit, HD-SDI HD videos are defeated
Outgoing interface, SD video hand-off process circuit, SD video processing circuits, CVBS SDs video output interface, control interface electricity
Road and light intensity sensor process circuit；
The main control circuit unit connection high definition visual light imaging unit, SD video hand-off process circuit, SD Video processing
Circuit, control interface and light intensity sensor process circuit；Be responsible for from control interface receive command information or from
Light intensity sensor process circuit receives environment light intensity signal, and controls high definition visual light imaging unit to carry out high definition visible ray numeral
The switching of video and SD visible light video, and control SD video hand-off process circuit carry out SD visible light video with it is red
The switching of outer thermal imaging SD video；
The high definition visual light imaging unit is used to generate high definition visible light video signal or SD according to different control instructions
Visible light video signal；
The HD-SDI HD videos process circuit is responsible for receiving the high definition video steaming of high definition visual light imaging unit output, and raw
Into the high-definition digital video signal of HD-SDI interface standards；
The thermal imaging member is used to generate infrared thermal imaging SD vision signal；
The SD video hand-off process circuit is responsible for receiving SD visible light video signal and infrared thermal imaging SD video letter
Number, and according to different instruction output wherein vision signal all the way；
The SD video processing circuits be responsible for receiving the output of high definition visual light imaging unit SD visible light video signal or
The infrared thermal imaging SD vision signal that thermal imaging member is produced, and generate the CVBS analog video signals of standard；
Main control circuit unit is mainly made up of STM32F103 microprocessors；Wherein RXD/TXD interfaces connect serial ports conversion chip,
UART1 interfaces connect high definition visual light imaging unit, and SPI interface connection SD video processing circuits, I2C interfaces connection light intensity is passed
Sensor process circuit, V_SEL signals connection SD video hand-off process circuit；
HD-SDI HD videos process circuit is mainly made up of deserializer LMH0341；
SD video processing circuits is mainly made up of OSD special driving chips SD1000；
SD video hand-off process circuit is mainly made up of single-pole double-throw switch (SPDT) chip ADG736；
Light intensity sensor process circuit is mainly made up of ambient light intensity sensors integrated circuit BH1750FVI；
Thermal imaging member uses thermal infrared imager；High definition visual light imaging unit use highest resolution 720p or 1080i with
On high definition visible light camera；
The system has two kinds of video switch modes, pattern one：Automatically switch；Pattern two：Manual switching；It is specific for operation below
Description：
1st step：When pattern is automatic mode, daytime is determined whether by light intensity sensor, when being judged as daytime, entered
4th step, otherwise, into the 3rd step；
2nd step：When pattern is manual mode, by RS485 interface control instructions, judge whether to need to start infrared heat
As instrument, if it is determined that need to start, then into the 3rd step, otherwise, into the 4th step；
3rd step：Thermal infrared imager is opened, visible light camera is closed, and enter the 5th step；
4th step：Thermal infrared imager is closed, visible light camera is opened, and enter the 6th step；
5th step：Infrared photography pattern is switched to, SD analog video signal is exported；
6th step：Judge whether to start HD video output mode, if it is, into the 7th step, otherwise, into the 8th step；
7th step：HD video output mode is switched to, high-definition digital video signal is exported；
8th step：SD video output mode is switched to, SD analog video signal is exported.
2. intelligent infrared thermal imaging as claimed in claim 1 and high definition visible ray two-waveband video monitoring system, its feature exist
In：The control interface uses RS485 interface circuits.
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| CN106488195A (en) * | 2016-12-13 | 2017-03-08 | 合肥英威晟光电科技有限公司 | A kind of monitoring system based on thermal imaging |
| CN106657925A (en) * | 2017-01-18 | 2017-05-10 | 沈阳上博智像科技有限公司 | Video output method and thermal infrared imager |
| CN109756706A (en) * | 2018-12-17 | 2019-05-14 | 珠海市国宏网络科技有限公司 | A kind of distributed video monitoring analysis system and data transmission method |
| CN109618082A (en) * | 2018-12-17 | 2019-04-12 | 珠海市国宏网络科技有限公司 | A kind of high-definition intelligent ball machine and data transmission method |
| CN113408506B (en) * | 2021-08-20 | 2021-12-07 | 航天宏图信息技术股份有限公司 | All-time cloud detection method and device for geostationary satellite |
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