CN106210671A - A kind of lift car video signal transmission system and method - Google Patents
A kind of lift car video signal transmission system and method Download PDFInfo
- Publication number
- CN106210671A CN106210671A CN201610818328.3A CN201610818328A CN106210671A CN 106210671 A CN106210671 A CN 106210671A CN 201610818328 A CN201610818328 A CN 201610818328A CN 106210671 A CN106210671 A CN 106210671A
- Authority
- CN
- China
- Prior art keywords
- image
- signal
- unit
- video
- interference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000008054 signal transmission Effects 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- 238000012545 processing Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 32
- 230000006835 compression Effects 0.000 claims description 32
- 238000007906 compression Methods 0.000 claims description 32
- 238000001914 filtration Methods 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 8
- 238000012372 quality testing Methods 0.000 claims description 7
- 241000282472 Canis lupus familiaris Species 0.000 claims description 4
- 230000006837 decompression Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
- H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The invention discloses a kind of lift car video signal transmission system and method, relate to elevators field.Described system includes: video acquisition device, image processing apparatus, the first chromacoder, unmasked two-core cable, secondary signal conversion equipment, wireless signal transmission, signal transferring device, wireless signal receiver and image display device；Described video acquisition device signal is connected to image processing apparatus；Described image processing apparatus signal respectively is connected to the first chromacoder and wireless signal transmission；Described first chromacoder signal is connected to unmasked two-core cable；It is connected to secondary signal conversion equipment after described unmasked two-core cable signal；Described secondary signal conversion device signal is connected to image display device；Described wireless signal transmission signal is connected to signal transferring device；Described signal transferring device signal is connected to wireless signal receiver；Described wireless signal receiver signal is connected to image display device.
Description
Technical field
The present invention relates to elevators field, particularly to a kind of lift car video signal transmission system and method.
Background technology
With deepening continuously of economic fast development and Development of China's Urbanization, the elevator industry of China just experiencing one high
Speed period of expansion.China's elevator yield is from the 1.03 ten thousand of nineteen ninety rise to 2010 36.5 ten thousand, annual compound growth rate
19.5%, domestic elevator demands amount was from only 3.72 ten thousand rise to 2010 32.97 ten thousand of 2000, to the end of the year 2010, I
State's elevator recoverable amount, more than 1,600,000, refers to " China's elevator industry market demand forecast is reported " with Analysis of Investment Opportunities.
Elevator, will be more and more extensive in following use as the main tool of high building carrying/goods, and it is the most common
Public place, so it is necessary to install CCTV camera in elevator.Elevator monitoring was in retinue by video line shuffling in the past
In cable, elevator(lift) machine room output being connected to Surveillance center, system architecture is simple.But elevator hoistways be one complex
Environment, the video monitoring image of a lot of engineerings by interference in various degree in elevator hoistways environment, this is the most most common,
It is most difficult to tackle, is also one of problem of greatest concern.
Additionally, elevator monitoring network signal transmission at present there is also a following two difficult problem: one is the hoistway ring that elevator runs
Border interference is very serious, and the loss how reducing network signal is the most all a difficult problem；Two is the hoistway that elevator runs
Execution conditions are poor, if being network monitoring by original simulation monitoring transformation and upgrade, off-gauge netting twine colligation of tradition is in retinue
The scheme cost of cable is high, and the shortcoming of poor reliability hinders the upgrading of elevator monitoring the most always；Three is to prison in lift car
Control machine room long distance of signal transmission, it is impossible to stablize and transfer signals to machine room clearly, also annoying construction work.
Summary of the invention
In consideration of it, the invention provides a kind of lift car video signal transmission system and method, this invention has: cost
The advantage such as low, safety is high, reliable and capacity of resisting disturbance is strong.
The technical solution used in the present invention is as follows:
A kind of lift car video signal transmission system, it is characterised in that described system includes: at video acquisition device, image
Reason device, the first chromacoder, unmasked two-core cable, secondary signal conversion equipment, wireless signal transmission, signal
Transferring device, wireless signal receiver and image display device；Described video acquisition device signal is connected to image procossing dress
Put；Described image processing apparatus signal respectively is connected to the first chromacoder and wireless signal transmission；Described first
Chromacoder signal is connected to unmasked two-core cable；It is connected to secondary signal after described unmasked two-core cable signal turn
Changing device；Described secondary signal conversion device signal is connected to image display device；Described wireless signal transmission signal is even
It is connected to signal transferring device；Described signal transferring device signal is connected to wireless signal receiver；Described reception of wireless signals
Device signal is connected to image display device.
Described video acquisition device includes: for obtaining the photographic head of original video image information；Described photographic head is believed
Number it is connected to the mode switching unit for converting video image information transmission mode；Described mode switching unit signal is connected to
For the quality testing unit to transmission quality testing.
Described image processing apparatus includes: image encryption unit, image compression unit and image coding unit；Described image
Ciphering unit, for being encrypted the image received, sends the image information after encryption to image compression unit；Described
Image compression unit, carries out compression of images for the image after encryption is carried out image information, is sent extremely by the image after compression
First chromacoder or wireless signal transmission.
Described image display device includes: image decoding unit, image decompressor unit, image decryption unit and image are aobvious
Show unit；Described image decoding unit, for being decoded the image information received, sends decoded image to figure
As decompression unit；Described image decompressor unit, adds compression for the image information received carries out image, will decompress
After image send to image decryption unit；Described image decryption unit, for the image received is decrypted, will deciphering
After image send to image-display units and show；Described image-display units, for showing the image received
Show.
Described system also includes: noise trap；Described noise trap be arranged at elevator the first chromacoder,
Unmasked two-core cable and secondary signal conversion equipment, for reducing the electromagnetic interference in signals transmission；Described anti-interference
Device includes: interference prediction unit, power filtering unit, high frequency absorption capacitor and hardware enabling Canis familiaris L. unit；Described power supply
Filter unit signal respectively is connected to the first chromacoder, unmasked two-core cable and the electricity of secondary signal conversion equipment
Source, for filtering the interference of power supply；Described high frequency absorption capacitor is for absorbing the electromagnetic interference on unmasked two-core cable；Institute
Stating hardware watchdog, signal is connected to the first chromacoder, unmasked two-core cable and secondary signal conversion equipment respectively,
For preventing the program operation problem caused because of outer external interference so that each device can be properly functioning；Described interference prediction
Unit, for being predicted the interference in system, draws the quantized value of system interference, is sent by quantized value to image display dress
Put.
A kind of lift car video-signal transmission method, it is characterised in that said method comprising the steps of:
Step 1: system start-up, system initialization；
Step 2: whether have problems in video acquisition device detection signals transmission, if wire signal transmission goes wrong,
Then it is transformed into transmission of wireless signals pattern, performs step 3；If wire signal transmission does not goes wrong, then close wireless signal and pass
Defeated, perform step 5；
Step 3: the image processing apparatus image to receiving carries out image encryption, compression and coding work, the letter that will handle well
Breath sends to the first chromacoder；
Step 4: this video signal is converted to differential signal by the first chromacoder；Sent extremely by unmasked two-core cable
Secondary signal conversion equipment；This differential signal is converted to the discernible video signal of display device by secondary signal conversion equipment,
Perform step 7；
Step 5: the image processing apparatus image to receiving carries out image encryption, compression and coding work, the letter that will handle well
Breath sends to wireless signal transmission；
Step 6: this video signal is sent to signal receiving device by wireless signal transmission through signal transferring device, and signal connects
Receiving apparatus transmits the signal to image display device, performs step 7；
Step 7: the image display device signal to receiving carries out picture decoding, is decompressed and decrypted by, and plays this video image.
The method that interference is predicted by described interference prediction unit comprises the following steps:
Step 1: acquisition interference level:；
Step 2: acquisition noise level:；
Step 3: acquisition signal level:；
Step 4: obtain interference strength according to equation below:
；
Step 5: the interference strength got is sent to image display device.
The method that the radio frequency image information received is encrypted by described image encryption unit comprises the following steps:
Step 1: video-encryption unit is at the video image start frame partial insertion file header received, at end frame partial insertion
End-of-file；
Step 2: at file header part, the IP address of typing purpose equipment and MAC Address；At end-of-file part, typing key；Make
With file header and end-of-file, this video is packaged.
Use above technical scheme, present invention produces following beneficial effect:
1, low cost: the unmasked two core cable of the present invention can use the cable in elevator trailing cable, need not extra wiring,
Scheme solves shortcoming expensive, that wiring is difficult, easily broken.
2, capacity of resisting disturbance is strong: the present invention adds anti-interference function in wire transmission part, not only enters power supply disturbance
Row filtering, the more interference to heart yearn absorbs.Additionally, be also added into hardware watchdog function, the hardware of each device is carried out
Monitoring, it is ensured that hardware properly functioning.
3, reliable: video is transmitted by the two set transmission systems that present invention employs, when wire transmission is broken down, from
Dynamic it is switched to be wirelessly transferred, it is ensured that transmission of video can be properly functioning in each time period, it is ensured that transmission of video reliable
Property.
4, safety is high: the present invention uses the cipher mode of uniqueness to be encrypted original video image, is not only regarding
Frequently image inserts key, more in the start frame partial insertion IP address of purpose equipment of video image, it is ensured that video is i.e.
Just it is intercepted and is also difficult to crack, at utmost ensure that the safety in video transmitting procedure.
Accompanying drawing explanation
Fig. 1 is the structure chart of the system of a kind of lift car video signal transmission system and method in the embodiment of the present invention.
Detailed description of the invention
All features disclosed in this specification, or disclosed all methods or during step, except mutually exclusive
Feature and/or step beyond, all can combine by any way.
Any feature disclosed in this specification (including any accessory claim, summary), unless specifically stated otherwise,
By other equivalences or there is the alternative features of similar purpose replaced.I.e., unless specifically stated otherwise, each feature is a series of
An example in equivalence or similar characteristics.
The embodiment of the present invention 1 provides a kind of lift car video signal transmission system, system construction drawing such as Fig. 1 institute
Show:
A kind of lift car video signal transmission system, it is characterised in that described system includes: at video acquisition device, image
Reason device, the first chromacoder, unmasked two-core cable, secondary signal conversion equipment, wireless signal transmission, signal
Transferring device, wireless signal receiver and image display device；Described video acquisition device signal is connected to image procossing dress
Put；Described image processing apparatus signal respectively is connected to the first chromacoder and wireless signal transmission；Described first
Chromacoder signal is connected to unmasked two-core cable；It is connected to secondary signal after described unmasked two-core cable signal turn
Changing device；Described secondary signal conversion device signal is connected to image display device；Described wireless signal transmission signal is even
It is connected to signal transferring device；Described signal transferring device signal is connected to wireless signal receiver；Described reception of wireless signals
Device signal is connected to image display device.
Described video acquisition device includes: for obtaining the photographic head of original video image information；Described photographic head is believed
Number it is connected to the mode switching unit for converting video image information transmission mode；Described mode switching unit signal is connected to
For the quality testing unit to transmission quality testing.
Described image processing apparatus includes: image encryption unit, image compression unit and image coding unit；Described image
Ciphering unit, for being encrypted the image received, sends the image information after encryption to image compression unit；Described
Image compression unit, carries out compression of images for the image after encryption is carried out image information, is sent extremely by the image after compression
First chromacoder or wireless signal transmission.
Described image display device includes: image decoding unit, image decompressor unit, image decryption unit and image are aobvious
Show unit；Described image decoding unit, for being decoded the image information received, sends decoded image to figure
As decompression unit；Described image decompressor unit, adds compression for the image information received carries out image, will decompress
After image send to image decryption unit；Described image decryption unit, for the image received is decrypted, will deciphering
After image send to image-display units and show；Described image-display units, for showing the image received
Show.
Described system also includes: noise trap；Described noise trap be arranged at elevator the first chromacoder,
Unmasked two-core cable and secondary signal conversion equipment, for reducing the electromagnetic interference in signals transmission；Described anti-interference
Device includes: interference prediction unit, power filtering unit, high frequency absorption capacitor and hardware enabling Canis familiaris L. unit；Described power supply
Filter unit signal respectively is connected to the first chromacoder, unmasked two-core cable and the electricity of secondary signal conversion equipment
Source, for filtering the interference of power supply；Described high frequency absorption capacitor is for absorbing the electromagnetic interference on unmasked two-core cable；Institute
Stating hardware watchdog, signal is connected to the first chromacoder, unmasked two-core cable and secondary signal conversion equipment respectively,
For preventing the program operation problem caused because of outer external interference so that each device can be properly functioning；Described interference prediction
Unit, for being predicted the interference in system, draws the quantized value of system interference, is sent by quantized value to image display dress
Put.
The embodiment of the present invention 2 provides a kind of lift car video-signal transmission method, specifically comprises the following steps that
A kind of lift car video-signal transmission method, it is characterised in that said method comprising the steps of:
Step 1: system start-up, system initialization；
Step 2: whether have problems in video acquisition device detection signals transmission, if wire signal transmission goes wrong,
Then it is transformed into transmission of wireless signals pattern, performs step 3；If wire signal transmission does not goes wrong, then close wireless signal and pass
Defeated, perform step 5；
Step 3: the image processing apparatus image to receiving carries out image encryption, compression and coding work, the letter that will handle well
Breath sends to the first chromacoder；
Step 4: this video signal is converted to differential signal by the first chromacoder；Sent extremely by unmasked two-core cable
Secondary signal conversion equipment；This differential signal is converted to the discernible video signal of display device by secondary signal conversion equipment,
Perform step 7；
Step 5: the image processing apparatus image to receiving carries out image encryption, compression and coding work, the letter that will handle well
Breath sends to wireless signal transmission；
Step 6: this video signal is sent to signal receiving device by wireless signal transmission through signal transferring device, and signal connects
Receiving apparatus transmits the signal to image display device, performs step 7；
Step 7: the image display device signal to receiving carries out picture decoding, is decompressed and decrypted by, and plays this video image.
The method that interference is predicted by described interference prediction unit comprises the following steps:
Step 1: acquisition interference level:；
Step 2: acquisition noise level:；
Step 3: acquisition signal level:；
Step 4: obtain interference strength according to equation below:
；
Step 5: the interference strength got is sent to image display device.
The method that the radio frequency image information received is encrypted by described image encryption unit comprises the following steps:
Step 1: video-encryption unit is at the video image start frame partial insertion file header received, at end frame partial insertion
End-of-file；
Step 2: at file header part, the IP address of typing purpose equipment and MAC Address；At end-of-file part, typing key；Make
With file header and end-of-file, this video is packaged.
Providing a kind of lift car video signal transmission system and method in the embodiment of the present invention 3, system construction drawing is such as
Shown in Fig. 1:
A kind of lift car video signal transmission system, it is characterised in that described system includes: at video acquisition device, image
Reason device, the first chromacoder, unmasked two-core cable, secondary signal conversion equipment, wireless signal transmission, signal
Transferring device, wireless signal receiver and image display device；Described video acquisition device signal is connected to image procossing dress
Put；Described image processing apparatus signal respectively is connected to the first chromacoder and wireless signal transmission；Described first
Chromacoder signal is connected to unmasked two-core cable；It is connected to secondary signal after described unmasked two-core cable signal turn
Changing device；Described secondary signal conversion device signal is connected to image display device；Described wireless signal transmission signal is even
It is connected to signal transferring device；Described signal transferring device signal is connected to wireless signal receiver；Described reception of wireless signals
Device signal is connected to image display device.
Described video acquisition device includes: for obtaining the photographic head of original video image information；Described photographic head is believed
Number it is connected to the mode switching unit for converting video image information transmission mode；Described mode switching unit signal is connected to
For the quality testing unit to transmission quality testing.
Described image processing apparatus includes: image encryption unit, image compression unit and image coding unit；Described image
Ciphering unit, for being encrypted the image received, sends the image information after encryption to image compression unit；Described
Image compression unit, carries out compression of images for the image after encryption is carried out image information, is sent extremely by the image after compression
First chromacoder or wireless signal transmission.
Described image display device includes: image decoding unit, image decompressor unit, image decryption unit and image are aobvious
Show unit；Described image decoding unit, for being decoded the image information received, sends decoded image to figure
As decompression unit；Described image decompressor unit, adds compression for the image information received carries out image, will decompress
After image send to image decryption unit；Described image decryption unit, for the image received is decrypted, will deciphering
After image send to image-display units and show；Described image-display units, for showing the image received
Show.
Described system also includes: noise trap；Described noise trap be arranged at elevator the first chromacoder,
Unmasked two-core cable and secondary signal conversion equipment, for reducing the electromagnetic interference in signals transmission；Described anti-interference
Device includes: interference prediction unit, power filtering unit, high frequency absorption capacitor and hardware enabling Canis familiaris L. unit；Described power supply
Filter unit signal respectively is connected to the first chromacoder, unmasked two-core cable and the electricity of secondary signal conversion equipment
Source, for filtering the interference of power supply；Described high frequency absorption capacitor is for absorbing the electromagnetic interference on unmasked two-core cable；Institute
Stating hardware watchdog, signal is connected to the first chromacoder, unmasked two-core cable and secondary signal conversion equipment respectively,
For preventing the program operation problem caused because of outer external interference so that each device can be properly functioning；Described interference prediction
Unit, for being predicted the interference in system, draws the quantized value of system interference, is sent by quantized value to image display dress
Put.
A kind of lift car video-signal transmission method, it is characterised in that said method comprising the steps of:
Step 1: system start-up, system initialization；
Step 2: whether have problems in video acquisition device detection signals transmission, if wire signal transmission goes wrong,
Then it is transformed into transmission of wireless signals pattern, performs step 3；If wire signal transmission does not goes wrong, then close wireless signal and pass
Defeated, perform step 5；
Step 3: the image processing apparatus image to receiving carries out image encryption, compression and coding work, the letter that will handle well
Breath sends to the first chromacoder；
Step 4: this video signal is converted to differential signal by the first chromacoder；Sent extremely by unmasked two-core cable
Secondary signal conversion equipment；This differential signal is converted to the discernible video signal of display device by secondary signal conversion equipment,
Perform step 7；
Step 5: the image processing apparatus image to receiving carries out image encryption, compression and coding work, the letter that will handle well
Breath sends to wireless signal transmission；
Step 6: this video signal is sent to signal receiving device by wireless signal transmission through signal transferring device, and signal connects
Receiving apparatus transmits the signal to image display device, performs step 7；
Step 7: the image display device signal to receiving carries out picture decoding, is decompressed and decrypted by, and plays this video image.
The method that interference is predicted by described interference prediction unit comprises the following steps:
Step 1: acquisition interference level:；
Step 2: acquisition noise level:；
Step 3: acquisition signal level:；
Step 4: obtain interference strength according to equation below:
；
Step 5: the interference strength got is sent to image display device.
The method that the radio frequency image information received is encrypted by described image encryption unit comprises the following steps:
Step 1: video-encryption unit is at the video image start frame partial insertion file header received, at end frame partial insertion
End-of-file；
Step 2: at file header part, the IP address of typing purpose equipment and MAC Address；At end-of-file part, typing key；Make
With file header and end-of-file, this video is packaged.
The invention is not limited in aforesaid detailed description of the invention.The present invention expands to any disclose in this manual
New feature or any new combination, and the arbitrary new method that discloses or the step of process or any new combination.
Claims (8)
1. a lift car video signal transmission system, it is characterised in that described system includes: video acquisition device, image
Processing means, the first chromacoder, unmasked two-core cable, secondary signal conversion equipment, wireless signal transmission, letter
Number transferring device, wireless signal receiver and image display device；Described video acquisition device signal is connected to image procossing
Device；Described image processing apparatus signal respectively is connected to the first chromacoder and wireless signal transmission；Described
One chromacoder signal is connected to unmasked two-core cable；It is connected to secondary signal after described unmasked two-core cable signal
Conversion equipment；Described secondary signal conversion device signal is connected to image display device；Described wireless signal transmission signal
It is connected to signal transferring device；Described signal transferring device signal is connected to wireless signal receiver；Described wireless signal connects
Receiving apparatus signal is connected to image display device.
2. lift car video signal transmission system as claimed in claim 1, it is characterised in that described video acquisition device bag
Include: for obtaining the photographic head of original video image information；Described camera signals is connected to believe for converting video image
The mode switching unit of breath transmission mode；Described mode switching unit signal is connected to for the quality inspection to transmission quality testing
Survey unit.
3. lift car video signal transmission system as claimed in claim 2, it is characterised in that described image processing apparatus bag
Include: image encryption unit, image compression unit and image coding unit；Described image encryption unit, for the figure received
As being encrypted, the image information after encryption is sent to image compression unit；Described image compression unit, after to encryption
Image carry out image information and carry out compression of images, the image after compression is sent to the first chromacoder or wireless signal
Transmitting device.
4. lift car video signal transmission system as claimed in claim 3, it is characterised in that described
Image display device includes: image decoding unit, image decompressor unit, image decryption unit and image-display units；
Described image decoding unit, for being decoded the image information received, sends decoded image to image decompression
Contracting unit；Described image decompressor unit, adds compression for the image information received is carried out image, the figure after decompressing
As sending to image decryption unit；Described image decryption unit, for being decrypted the image received, by the figure after deciphering
As transmission to image-display units shows；Described image-display units, for showing the image received.
5. lift car video signal transmission system as claimed in claim 4, it is characterised in that described system also includes: anti-
Countermeasure set；Described noise trap is arranged at the first chromacoder of elevator, unmasked two-core cable and secondary signal
Conversion equipment, for reducing the electromagnetic interference in signals transmission；Described noise trap includes: interference prediction unit, electricity
Source filter unit, high frequency absorption capacitor and hardware enabling Canis familiaris L. unit；Described power filtering unit signal respectively is connected to
One chromacoder, unmasked two-core cable and the power supply of secondary signal conversion equipment, for filtering the interference of power supply；Described
High frequency absorption capacitor is for absorbing the electromagnetic interference on unmasked two-core cable；Described hardware watchdog, signal connects respectively
In the first chromacoder, unmasked two-core cable and secondary signal conversion equipment, it is used for preventing because outer external interference is drawn
The program operation problem risen so that each device can be properly functioning；Described interference prediction unit, for entering the interference in system
Row prediction, draws the quantized value of system interference, sends quantized value to image display device.
6. a method based on the lift car video signal transmission system one of claim 1 to 5 Suo Shu, its feature exists
In, said method comprising the steps of:
Step 1: system start-up, system initialization；
Step 2: whether have problems in video acquisition device detection signals transmission, if wire signal transmission goes wrong,
Then it is transformed into transmission of wireless signals pattern, performs step 3；If wire signal transmission does not goes wrong, then close wireless signal and pass
Defeated, perform step 5；
Step 3: the image processing apparatus image to receiving carries out image encryption, compression and coding work, the letter that will handle well
Breath sends to the first chromacoder；
Step 4: this video signal is converted to differential signal by the first chromacoder；Sent extremely by unmasked two-core cable
Secondary signal conversion equipment；This differential signal is converted to the discernible video signal of display device by secondary signal conversion equipment,
Perform step 7；
Step 5: the image processing apparatus image to receiving carries out image encryption, compression and coding work, the letter that will handle well
Breath sends to wireless signal transmission；
Step 6: this video signal is sent to signal receiving device by wireless signal transmission through signal transferring device, and signal connects
Receiving apparatus transmits the signal to image display device, performs step 7；
Step 7: the image display device signal to receiving carries out picture decoding, is decompressed and decrypted by, and plays this video image.
7. lift car video-signal transmission method as claimed in claim 6, it is characterised in that described interference prediction unit pair
The method that interference is predicted comprises the following steps:
Step 1: acquisition interference level:；
Step 2: acquisition noise level:；
Step 3: acquisition signal level:；
Step 4: obtain interference strength according to equation below:
；
Step 5: the interference strength got is sent to image display device.
8. lift car video-signal transmission method as claimed in claim 6, it is characterised in that described image encryption unit pair
The method that the radio frequency image information received is encrypted comprises the following steps:
Step 1: video-encryption unit is at the video image start frame partial insertion file header received, at end frame partial insertion
End-of-file；
Step 2: at file header part, the IP address of typing purpose equipment and MAC Address；At end-of-file part, typing key；Make
With file header and end-of-file, this video is packaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610818328.3A CN106210671A (en) | 2016-09-13 | 2016-09-13 | A kind of lift car video signal transmission system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610818328.3A CN106210671A (en) | 2016-09-13 | 2016-09-13 | A kind of lift car video signal transmission system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106210671A true CN106210671A (en) | 2016-12-07 |
Family
ID=58067618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610818328.3A Withdrawn CN106210671A (en) | 2016-09-13 | 2016-09-13 | A kind of lift car video signal transmission system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106210671A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109905656A (en) * | 2017-12-11 | 2019-06-18 | 日立楼宇技术（广州）有限公司 | A kind of acquisition methods, device, equipment and the storage medium of lift car video |
| CN109905655A (en) * | 2017-12-11 | 2019-06-18 | 日立楼宇技术（广州）有限公司 | A kind of acquisition methods, device, equipment and the storage medium of lift car video |
| CN109905654A (en) * | 2017-12-11 | 2019-06-18 | 日立楼宇技术（广州）有限公司 | A kind of acquisition methods, device, equipment and the storage medium of lift car video |
| CN111490960A (en) * | 2019-01-25 | 2020-08-04 | 舜宇光学（浙江）研究院有限公司 | Split augmented reality device, data transmission system and data transmission method thereof |
-
2016
- 2016-09-13 CN CN201610818328.3A patent/CN106210671A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109905656A (en) * | 2017-12-11 | 2019-06-18 | 日立楼宇技术（广州）有限公司 | A kind of acquisition methods, device, equipment and the storage medium of lift car video |
| CN109905655A (en) * | 2017-12-11 | 2019-06-18 | 日立楼宇技术（广州）有限公司 | A kind of acquisition methods, device, equipment and the storage medium of lift car video |
| CN109905654A (en) * | 2017-12-11 | 2019-06-18 | 日立楼宇技术（广州）有限公司 | A kind of acquisition methods, device, equipment and the storage medium of lift car video |
| CN109905656B (en) * | 2017-12-11 | 2021-01-05 | 日立楼宇技术（广州）有限公司 | Method, device and equipment for acquiring elevator car video and storage medium |
| CN109905654B (en) * | 2017-12-11 | 2021-03-02 | 日立楼宇技术（广州）有限公司 | Method, device and equipment for acquiring elevator car video and storage medium |
| CN111490960A (en) * | 2019-01-25 | 2020-08-04 | 舜宇光学（浙江）研究院有限公司 | Split augmented reality device, data transmission system and data transmission method thereof |
| CN111490960B (en) * | 2019-01-25 | 2022-07-29 | 舜宇光学（浙江）研究院有限公司 | Split augmented reality device, data transmission system and data transmission method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106210671A (en) | A kind of lift car video signal transmission system and method | |
| US20160269691A1 (en) | System for monitoring door using door phone | |
| WO2018058575A1 (en) | Processing method and system for flight image data, and ground end device | |
| CN102143352A (en) | Video play monitoring system and method | |
| CN106790540A (en) | A kind of remote command control system of oil field well pressing crack construction | |
| US7653844B2 (en) | Communication apparatus and communication system | |
| US20180255325A1 (en) | Fault recovery of video bitstream in remote sessions | |
| CN103428493A (en) | Light wireless transmission system for high-definition videos | |
| KR20160104988A (en) | Police video control system | |
| JP2015162903A (en) | Monitoring system and operation method thereof | |
| JP2013070187A (en) | Image transmission apparatus and image transmission system using the same | |
| CN105577671B (en) | The transmission method and Transmission system of audio signal and vision signal | |
| CN113630426B (en) | Private encryption method and system based on simultaneous interpretation | |
| CN104869350A (en) | Multi-channel Sharing Apparatus And Multi-channel Sharing Method | |
| CN210297903U (en) | Conference television safety protection system | |
| CN107835186A (en) | A kind of lift car and its Video transmission system and method | |
| CN107172150A (en) | A kind of display control apparatus, server and information control method | |
| CN105472304A (en) | Power grid emergency communication video coding and decoding dynamic adaptation method and system thereof | |
| CN106078806B (en) | Intelligent Mobile Robot monitoring system and method based on Centralized Monitoring | |
| CN102868917B (en) | The method and system of the multiple elevator of remote monitoring simultaneously video | |
| CN105764050A (en) | Method and apparatus for transmitting data from terminal inside wireless local area network to device outside wireless local area network | |
| CN104660877A (en) | Web camera | |
| CN205232391U (en) | Fire control image processing terminal | |
| CN110267050B (en) | Data transmission method, device and system | |
| WO2017092288A1 (en) | Method and device for monitoring base station outdoor device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20161207 |