CN109523740A - Jamproof fire identification video camera - Google Patents
Jamproof fire identification video camera Download PDFInfo
- Publication number
- CN109523740A CN109523740A CN201811619261.6A CN201811619261A CN109523740A CN 109523740 A CN109523740 A CN 109523740A CN 201811619261 A CN201811619261 A CN 201811619261A CN 109523740 A CN109523740 A CN 109523740A
- Authority
- CN
- China
- Prior art keywords
- fire
- pass filter
- camera lens
- lens barrel
- lens
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 19
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
-
- 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
Abstract
The invention belongs to fire hazard monitoring fields, disclose a kind of jamproof fire identification video camera.Jamproof fire identification video camera of the invention includes fuselage, main circuit board, first lens barrel and the second lens barrel are set on fuselage, first lens barrel one end is connect with fuselage, the first camera lens is arranged in the other end, polarizing film is set outside first camera lens, high-pass filter and low pass filter are set between the first camera lens and the first cmos sensor；Second lens barrel one end is connect with fuselage, and the second camera lens is arranged in the other end, and the second cmos sensor is arranged in the second lens barrel.Jamproof fire identification video camera of the invention, by increasing polarizing film, high-pass filter in the optical path of the first camera lens, low pass filter efficiently reduces interference brought by other non-fire light and causes to judge by accident.It is additionally provided with individually the second camera lens without optical filtering simultaneously, when fire alarm occurs, monitoring personnel can view the monitoring image of alarm region, so that the judgement to fire is more accurate.
Description
Technical field
The invention belongs to fire hazard monitoring fields, and in particular to a kind of jamproof fire identification video camera.
Background technique
Modern architecture scale get up it is bigger, occur fire when it is brought loss it is also increasing.It is now universal under construction
Fire monitoring system is installed, fire alarm information is provided at the first time when fire occurs for building.It, can be in fire monitoring system
Fire is occurred to judge whether using detection smog, fire can also be occurred to judge whether using directly detection flame.
In using the fire monitoring system for directly detecting flame, in common jamproof fire identification video camera, light is all straight
Sensor is reached after tapping into camera lens, due to that there may be some nonflame light in monitored environment, easily causes erroneous judgement.
Summary of the invention
A kind of jamproof fire identification video camera that the present invention provides in view of the above shortcomings.
Jamproof fire identification video camera of the invention, including fuselage, main circuit board, be arranged on fuselage the first lens barrel and
Second lens barrel, first lens barrel one end are connect with fuselage, and the first camera lens is arranged in the other end, and polarizing film is arranged outside the first camera lens,
High-pass filter and low pass filter are set between the first camera lens and the first cmos sensor；Second lens barrel one end and fuselage connect
It connects, the second camera lens is arranged in the other end, and the second cmos sensor is arranged in the second lens barrel.
Further, corresponding wavelength is 600-700nm at high-pass filter cutoff frequency, at low pass filter cutoff frequency
Corresponding wavelength is 800-900nm.
Further, light is by polarizing film, and the first camera lens, high-pass filter, the sequence of low pass filter is arbitrarily to set
It sets.
The invention has the advantages that by increasing polarizing film, high-pass filter, low pass filtered in the optical path of the first camera lens
Mating plate efficiently reduces other non-fire light institute bands so that generated light enters cmos sensor when fire occurs
The interference come causes to judge by accident.Flame identification video camera of the invention simultaneously is additionally provided with individually the second camera lens without optical filtering,
Second camera lens is common monitoring camera, can collect the monitoring image in fire hazard monitoring region, when fire alarm occurs, monitoring
Personnel can view the monitoring image of alarm region, so that the judgement to fire is more accurate.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
In attached drawing: 1- polarizing film, the first camera lens of 2-, the first lens barrel of 3-, 4- high-pass filter, 5- low pass filter, 6-
One cmos sensor, 7- fuselage, 8- main circuit board, the second camera lens of 9-, the second lens barrel of 10-, the second cmos sensor of 11-.
Specific embodiment
In conjunction with Fig. 1, jamproof fire identification video camera of the invention, including fuselage 7, main circuit board 8 is set on fuselage 7
The first lens barrel 3 and the second lens barrel 10 are set, described first lens barrel, 3 one end is connect with fuselage 7, the other end the first camera lens 2 of setting, and first
Polarizing film 1 is set outside camera lens 2, high-pass filter 4 and low pass filter are set between the first camera lens 2 and the first cmos sensor 6
5；Second lens barrel, 10 one end is connect with fuselage 7, and the second camera lens 9 is arranged in the other end, and the 2nd CMOS of setting is sensed in the second lens barrel 10
Device 11.
Jamproof fire identification video camera of the invention, corresponding wavelength is 600- at 4 cutoff frequency of high-pass filter
700nm, corresponding wavelength is 800-900nm at 5 cutoff frequency of low pass filter.
Jamproof fire identification video camera of the invention, light is by polarizing film 1, the first camera lens 2, high-pass filter 4,
The sequence of low pass filter 5 is any setting.High-pass filter 4 can be namely set before the first camera lens 2 or low pass filters
High-pass filter 4, low pass filter 5, polarizing film 1 can also be partly or entirely set to the first camera lens 2 by piece 5 or polarizing film 1
Rear.Only needing to reach the light of the first cmos sensor 6 can by high-pass filter 4, low pass filter 5, polarizing film 1
With, and can be regardless of the sequence by them.
Jamproof fire identification video camera of the invention when in use, is installed to the region for needing to be monitored,
Subsequent first cmos sensor 6 of first camera lens 2 collected light be light after filtering, only fire disaster flame institute
The light of sending or light identical with the light frequency spectrum that fire disaster flame is issued can just enter the first cmos sensor 6,
Other light cannot enter the first cmos sensor 6, efficiently reduce interference brought by other non-fire light and cause to miss
Sentence.Second camera lens 9 is common monitoring camera, can collect the monitoring image in fire hazard monitoring region, when fire alarm occurs,
Monitoring personnel can view the monitoring image of alarm region, so that the judgement to fire is more accurate.Include in main circuit board 8
Control circuit in jamproof fire identification video camera.It can only include Image Acquisition part in flame identification circuit,
Institute's acquired image is transferred to monitoring room host and carries out fire judgement again.Fire judgment part can also be focused on main circuit
In plate 8, the signal for being transferred to monitoring room host is directly the signal for whether generating fire.
Claims (3)
1. a kind of jamproof fire identification video camera, including fuselage (7), main circuit board (8), which is characterized in that on fuselage (7)
First lens barrel (3) and the second lens barrel (10) are set, and described first lens barrel (3) one end is connect with fuselage (7), other end setting first
Polarizing film (1) is arranged outside, high pass is arranged between the first camera lens (2) and the first cmos sensor (6) for camera lens (2), the first camera lens (2)
Optical filter (4) and low pass filter (5)；Second lens barrel (10) one end is connect with fuselage (7), and the second camera lens (9) are arranged in the other end,
The second cmos sensor (11) are set in second lens barrel (10).
2. video camera according to claim 1, it is characterized in that corresponding wavelength is at the high-pass filter (4) cutoff frequency
600-700nm, corresponding wavelength is 800-900nm at low pass filter (5) cutoff frequency.
3. video camera according to claim 1 or 2, which is characterized in that light passes through polarizing film (1), the first camera lens (2),
High-pass filter (4), the sequence of low pass filter (5) are any setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811619261.6A CN109523740A (en) | 2018-12-28 | 2018-12-28 | Jamproof fire identification video camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811619261.6A CN109523740A (en) | 2018-12-28 | 2018-12-28 | Jamproof fire identification video camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109523740A true CN109523740A (en) | 2019-03-26 |
Family
ID=65798506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811619261.6A Pending CN109523740A (en) | 2018-12-28 | 2018-12-28 | Jamproof fire identification video camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109523740A (en) |
-
2018
- 2018-12-28 CN CN201811619261.6A patent/CN109523740A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190326 |
|
| WD01 | Invention patent application deemed withdrawn after publication |