CN108918423A - A kind of safety system for the detection of open laser gas - Google Patents
A kind of safety system for the detection of open laser gas Download PDFInfo
- Publication number
- CN108918423A CN108918423A CN201810660064.2A CN201810660064A CN108918423A CN 108918423 A CN108918423 A CN 108918423A CN 201810660064 A CN201810660064 A CN 201810660064A CN 108918423 A CN108918423 A CN 108918423A
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- laser
- detection
- protectiveness
- open
- safety system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
Abstract
The present invention provides a kind of personnel safety ensuring equipment and system for the detection of open laser gas.It protects optical transmitter module in parallel with the laser emitting module in laser detection equipment, emits the low power laser in visible-range in parallel；The protection optical wrap enters in open monitoring environment together around detection laser beam；When laser detection equipment booting is ready for checking, which goes out to protect light light beam, without emitting detection laser in the presence of personnel again on laser optical path to be determined.Present invention could apply in existing laser gas detection device, for ensuring that it not will cause potential personal injury in the open working environment that may have personnel to occur.
Description
Technical field
The present invention relates to a kind of open laser detection system, in particular to it is a kind of for open laser gas detection
Safety system.
Technical background
There are many poisonous and harmful, flammable explosive gas in the production and living environment of modern society, to personnel health and
Safety belt comes potentially hazardous.In some open occasions, for example, chemical plant, gas station, vehicle exhaust, in resident family, hotel etc.,
It needs to be monitored pernicious gas.And traditional gas sampling send the means to lab analysis to be far from satisfying in real time again
The demand of monitoring, so online remote sensing gas-monitoring becomes the only effective means immediately.
Existing frequently-used online remote sensing gas detection method mainly uses laser gas testing principle.Due to every kind of gas
With the property for absorbing respective frequencies infrared energy, namely there is characteristic absorption frequency.When light passes through gas, extraordinary frequency
The light of spectral line can be actually taken up by gas, and corresponding variation can occur for the intensity of light, thus i.e. can determine object gas presence and its
Concentration ratio.But in order to improve measurement distance, reduce the impurity interference in environment, the laser power in laser gas detection
It is often larger, human body can be caused potentially hazardous.For infrared laser, the refracting media absorptivity in human eye is lower and transmits
Rate is higher.The higher laser of intensity is focused on retina by the refracting media of human eye, will cause the raising of local temperature moment,
Destroying retinal photosensory cell is so that blindness.In addition, if high intensity laser beam irradiates skin for a long time and is also possible to cause to burn, for a long time
Influence lesion even including tissue.
General in traditional open laser gas detection device does not include the system for preventing personal injury, is had for some
The open occasion that personnel walk about, potential personal injury have to avoid occurring.Moreover, because commonly detecting laser
Source is located at infrared light district mostly, to visually not as it can be seen that being difficult to predict the generation of laser hazard.Therefore, it is based on existing laser gas
The principle of body detection device, using the principle and related mechanism of automatic control, invent it is a kind of can effectively prevent personal injury be
System is of great significance for the health and safety of personnel in ensureing production, living.
Summary of the invention
The purpose of the present invention is overcoming above-mentioned deficiency, provide it is a kind of can prevent that personnel from coming to harm for open laser
The safety system of gas detection, using additional increased visible protection laser as detection source, determining in laser optical path is
It is no with the presence of personnel.
The present invention provides a kind of safety system for the detection of open laser gas, including：Protectiveness laser hair
Emitter, laser beam splitter and laser signal receivers.
The system can access laser gas detection system by wired or wireless mode, can also independently supervise with back-stage management
Measured center Real-time Communication.
1, protectiveness laser emitter
Used protectiveness laser is general to select swashing in visible wavelength range due to not having detection demand in the system
Light.When there are when the impurity such as dust in open environment, it is seen that laser in optical range due to Tyndall phenomenon will will form can
The optical path seen, plays a warning role personnel, so visible light colors are preferred with the apparent warning color such as red, yellow.In addition,
According to domestic and international common laser intensity grade scale, protectiveness laser should be 1 grade, 2 grades or 3a grades, and specific power should be
5mW or less.
2, laser beam splitter
The function of laser beam splitter is for protectiveness laser to be divided into multi beam, and detection laser parallel connection enters open optical path.This
A little protectiveness laser beams should be looped around around detection laser beam, played the role of warning, given warning in advance.
3, laser signal receivers
The function of signal receiver predominantly receive protectiveness laser beam, it is demodulated, according to the laser signal received come
Determine the working condition of laser detector.The main effect in the part is that electric signal will be become after optical signal modulation, then passes
Computer is transported to be handled.
Further, the protectiveness single beam laser is divided into 2 beams and the above laser by the laser beam splitter, 2 beam and
The above laser and detection laser beam, which are constituted, surrounds around relationship（Fig. 1）.
Further, the protectiveness laser is the laser in visible wavelength range；The visible light colors, which have, warns
Property color, be red, yellow, orange, blue or green；The protectiveness laser power in 5mW hereinafter, for 1 grade, 2 grades or
3a grades.
Further, the protectiveness laser emitter and detection laser emitter are placed in same position, mutually in parallel each other to close
System, the protectiveness laser and detection laser are entered in open environment by window portion.
Further, the present invention provides a kind of safety systems for the detection of open laser gas to be divided into two kinds of shapes
State：System boot and system break.
Further, under the system boot state, protectiveness laser beam is first advanced into environment, when in predetermined light paths
It is unobstructed, start transmitting detection laser signal；Protectiveness laser beam described in the laser signal receivers receiving portion does not have
When receiving any signal, system break, detection laser stops transmitting.
Further, after system break, when needing to restart, system boot process is repeated.
Prevent the workflow of personnel's laser hazard system as follows：When using the protection system, it is divided into two kinds of situations：System
Booting and system break.
Protectiveness laser emitter and detection laser emitter are placed in same position, and mutually parallel relationship, laser pass through each other
Window portion enters in open environment.In the case where system boot, protectiveness laser beam is first advanced into environment, and is held
Continuous a period of time.When being blocked in predetermined light paths without personnel, after signal receiver receives whole protectiveness laser beam signals,
It can start transmitting detection laser signal to start to work.As long as occur in predetermined light paths it is any block, protectiveness laser beam
It is unable to arriving signal receiver, detection laser stops transmitting, while operator being warned to take measures to clear up optical path.In optical path
In the case where interruption, namely when there are personnel to abruptly enter optical path in the operating condition, since protectiveness laser beam is located at inspection
The periphery of laser is surveyed, therefore what is be blocked first must be protectiveness laser beam.Once signal receiver finds that a few beams are protected
Shield property laser beam is blocked, and laser gas detection system will be allowed to stop working immediately, to protect the personnel for entering optical path, simultaneously
Operator will be also notified to clear up optical path.When needing to restart again after the system break, then the repeatedly process of system boot.
Additional increased protection optical transmitter module is in parallel with the laser emitting module in laser detection equipment, emits in parallel
Low power laser in visible-range；The protection optical wrap enters open monitoring environment together around detection laser beam
In；When laser detection equipment booting is ready for checking, which, which goes out, protects light light beam, to be determined to swash
Without emitting detection laser in the presence of personnel again in light optical path；Protection light light can be first blocked when there are personnel to enter laser detection optical path
Road allows laser detection equipment to stop working at once when receiver finds that protection light optical path is interdicted；Whole system is stopping work
After making when needing to restart, movement before repeating when system boot, i.e., preparatory light path is unobstructed, specific interval time and
The protection light beam duration can be adjusted according to actual condition.Present invention could apply to existing laser gas detection devices
In, for ensuring that it not will cause potential personal injury in the open working environment that may have personnel to occur.
In conclusion protecting light the present invention provides a kind of safety system for the detection of open laser gas
Transmitting module is in parallel with the laser emitting module in laser detection equipment, and the low-power emitted in visible-range in parallel swashs
Light；The protection optical wrap enters in open monitoring environment together around detection laser beam；When laser detection equipment booting is quasi-
It is standby that the protection electro-optical device preferential emission, which goes out, protects light light beam when being checked, on laser optical path to be determined without in the presence of personnel again
Transmitting detection laser.Present invention could apply in existing laser gas detection device, for ensuring that it may have personnel
Potential personal injury is not will cause in the open working environment occurred.
Detailed description of the invention
Fig. 1 is the sectional dimension of protectiveness laser beam and detection laser beam and the schematic diagram of relevant position.
Fig. 2 is the structure and workflow schematic diagram protected laser system and detect laser system.
Specific embodiment
In the following, detailed description of embodiments of the present invention.
A kind of safety system for the detection of open laser gas, as shown in Figure 1, it should be noted that Fig. 1 exhibition
What is shown is the schematic diagram of protectiveness laser beam and detection laser beam relative position in the present embodiment.Protectiveness laser is red（Wave
A length of 650nm）, power is 2 grades.As just reference, the quantity of specific value and laser beam cannot be managed for size marking in figure
Solution is limitation of the present invention.In addition, detection laser beam does not include in the present invention.
It is a kind of for open laser gas detection safety system entire infrastructure and optical path as shown in Fig. 2, institute
The structure and optical path for stating security system are indicated in Fig. 2 with solid box.The part of dotted line is the knot of existing laser detection part
Structure and optical path.It is in order to illustrate the relative position of the invention with existing laser detector and function that Fig. 2, which puts the two together,
It can relationship.Existing laser detection part does not include in the present invention.
Fig. 2 is the structure and workflow schematic diagram of the present embodiment.Including：Transmitting terminal is from left to right followed successively by protectiveness
Laser emitter, optical path beam splitter.Receiving end, laser signal receivers.Protectiveness laser emitter and existing detection laser
Transmitter is installed side by side, and the laser emitted is the visible laser beam of low-power.Optical path beam splitter is mounted on protectiveness laser hair
The right side of emitter constitutes the series relationship in optical path with protectiveness laser emitter.The protection that protectiveness laser emitter generates
Property laser becomes that 6 beam laser are parallel with detection laser beam to be entered in open environment after optical path beam splitter.Protectiveness swashs
The relative size and positional relationship of light beam and detection laser beam are as shown in Figure 1.Protectiveness laser beam is in a manner of circumference array etc.
Away from being distributed in around detection laser beam.Two kinds of light beams pass through the laser signal reception that open environment reaches right end together
Device.Laser signal receivers convert optical signal into electric signal and are transferred to monitoring system.
The workflow of monitoring system is as follows：When using the protection system, it is divided into two kinds of situations：In system boot and system
It is disconnected.Protectiveness laser emitter and detection laser emitter are placed in same position, and mutually parallel relationship, laser pass through window portion each other
Divide and enters in open environment.In the case where system boot, protectiveness laser beam is first advanced into environment, and continues one section
Time.When being blocked in predetermined light paths without personnel, after signal receiver receives whole protectiveness laser beam signals, the signal
The responsive state of receiver can just start transmitting detection laser signal for 1 to start to work.As long as occurring in predetermined light paths any
It blocking, protectiveness laser beam is then unable to arriving signal receiver, then the responsive state of signal receiver is 0, and detection laser is
Stop transmitting, while operator being warned to take measures to clear up optical path.In the case where breaking in the optical path, namely in the operating condition
When there are personnel to abruptly enter optical path, since protectiveness laser beam is located at the periphery of detection laser, it is blocked first
It must be protectiveness laser beam.Once signal receiver finds that a few beam protectiveness laser beams are blocked, signal receiver
Responsive state become 0 from 1 at once, laser gas detection system will be allowed to stop working immediately, with protect enter optical path personnel,
Operator will be also notified to clear up optical path simultaneously.When needing to restart again after the system break, then the repeatedly mistake of system boot
Journey.
It is to be appreciated that the orientation or positional relationship of term " left side " " right side " instruction in the description of the present invention and embodiment
For orientation based on the figure and positional relationship, it is only for facilitate and describes structurally and operationally mode of the invention, without
It is instruction or implies that signified part must have a particular orientation, with the operation of specific orientation, thus should not be understood as pair
Limitation of the invention.It can be the laser of 2 beams or more in the present embodiment through 6 separated beam protectiveness laser of optical path beam splitter
Beam；Protectiveness laser is also an option that orange, yellow, green etc. other than red；Power is also an option that 1 grade or 3a grades.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure made by bright specification and accompanying drawing content or equivalent process variation, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (9)
1. a kind of safety system for the detection of open laser gas, which is characterized in that including：Protectiveness Laser emission
Device, laser beam splitter and laser signal receivers；
The protectiveness laser transmitter projects protectiveness laser；
Protectiveness laser is divided into multi beam by the laser beam splitter, and detection laser parallel connection enters open optical path；
The laser signal receivers will become electric signal, then pass for receiving protectiveness laser beam after optical signal modulation
Computer is transported to be handled.
2. a kind of safety system for the detection of open laser gas according to claim 1, which is characterized in that
Protectiveness single beam laser is divided into 2 beams and the above laser by the laser beam splitter, 2 beam and the above laser and detection laser beam
It constitutes and surrounds around relationship.
3. a kind of safety system for the detection of open laser gas according to claim 1 or 2, feature exist
In the protectiveness laser is the laser in visible wavelength range.
4. a kind of safety system for the detection of open laser gas according to claim 3, which is characterized in that visible
Light color is red, yellow, orange, blue or green.
5. a kind of safety system for the detection of open laser gas according to claim 1 or 2, feature exist
In the protectiveness laser power is in 5mW hereinafter, being 1 grade, 2 grades or 3a grades.
6. a kind of safety system for the detection of open laser gas according to claim 1 or 2, feature exist
It is placed in same position in, protectiveness laser emitter and detection laser emitter, mutually parallel relationship each other, the protectiveness laser
Entered in open environment with detection laser by window portion.
7. a kind of safety system for the detection of open laser gas according to claim 6, which is characterized in that
The protection system is divided into two states：System boot and system break.
8. a kind of safety system for the detection of open laser gas according to claim 7, which is characterized in that
Under the system boot state, protectiveness laser beam is first advanced into environment, when unobstructed in predetermined light paths, starts to emit
Detect laser signal；Protectiveness laser beam described in the laser signal receivers receiving portion is not received by any signal
When, system break, detection laser stops transmitting.
9. a kind of safety system for the detection of open laser gas according to claim 8, which is characterized in that
After system break, when needing to restart, system boot process is repeated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810660064.2A CN108918423A (en) | 2018-06-25 | 2018-06-25 | A kind of safety system for the detection of open laser gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810660064.2A CN108918423A (en) | 2018-06-25 | 2018-06-25 | A kind of safety system for the detection of open laser gas |
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| CN108918423A true CN108918423A (en) | 2018-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810660064.2A Pending CN108918423A (en) | 2018-06-25 | 2018-06-25 | A kind of safety system for the detection of open laser gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111091989A (en) * | 2020-03-23 | 2020-05-01 | 北京波量科技有限公司 | High-field laser laboratory safety interlocking device and control method thereof |
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| CN201540622U (en) * | 2009-09-29 | 2010-08-04 | 长沙楚风文化传播有限公司 | Multi-beam laser correlation device |
| CN102157045A (en) * | 2011-05-12 | 2011-08-17 | 上海龙放建筑智能系统工程有限公司 | Self-adapting infrared laser invasion detector |
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| CN111091989B (en) * | 2020-03-23 | 2020-06-26 | 北京波量科技有限公司 | High-field laser laboratory safety interlocking device and control method thereof |
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Application publication date: 20181130 |
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| RJ01 | Rejection of invention patent application after publication |