CN110634263A - Smoke detector and acquisition concentration control method thereof - Google Patents
Smoke detector and acquisition concentration control method thereof Download PDFInfo
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- CN110634263A CN110634263A CN201910867905.1A CN201910867905A CN110634263A CN 110634263 A CN110634263 A CN 110634263A CN 201910867905 A CN201910867905 A CN 201910867905A CN 110634263 A CN110634263 A CN 110634263A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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Abstract
The invention relates to a smoke detector and a method for controlling the concentration of smoke collected by the smoke detector at intervalstCollecting the smoke concentration, collecting the smoke concentration when the smoke concentration changes, alarming when the smoke concentration reaches an alarm threshold value, performing concentration control when the smoke concentration reaches an adjustment threshold value to obtain an updated smoke concentration value, and repeating concentration control; is uniformly and annularly arranged outside the tobacco inlet platformnThe smoke inlet is communicated with the optical labyrinth space, so that the smoke inlet quantity is stable and average, and the realization of a control method and the working accuracy of the smoke detector are ensured. The smoke alarm device inhibits the rising speed of smoke concentration, the smoke alarm point is controlled within a reasonable range, the inhibition effect is stronger when the concentration rises faster, and the smoke concentration is ensured to be always within the alarm inhibition range without influencing normal alarm; promote into the cigarette volume, guarantee the uniformity, the cigarette feels into cigarette volume and concentration rise unanimous and unanimous with environment concentration under the different installation angle, promotes the difference that advances the cigarette volume in the unit interval and guarantee different horizontal angles and advance the cigarette volume little.
Description
Technical Field
The present invention relates to signaling or calling devices; an instruction-transmitting device; the technical field of alarm devices, in particular to a fire alarm device; a smoke detector for an alarm responsive to an explosion and a method for controlling the concentration of collected smoke.
Background
The smoke detector realizes fire prevention by monitoring smoke concentration, the smoke detector adopts an ion type smoke sensor or an optical maze and the like, and has an initial balance state, when the balance state is broken, the smoke detector indicates that fire or dense smoke is generated, and alarms when the smoke concentration reaches a certain standard.
In the prior art, a smoke detector only performs some simple processing such as filtering on collected smoke concentration data, but the process control on the rise of the collected smoke concentration is less, namely, the process control on the actual concentration without concentration change exists, so that the concentration control which needs to be alarmed in some occasions is difficult to realize and needs to be solved through other non-software means when the concentration control is in a certain range.
Furthermore, the smoke concentration detected by part of smoke detectors is greatly different from the actual smoke sensing surrounding concentration, and the smoke inlet amount at different angles is greatly different, namely, the smoke inlet concentration is inconsistent with the actual environment concentration, especially when the wind speed is small in some occasions or the angle is not at the optimal angle during installation, the actual smoke inlet amount of the smoke detector is not large, although the alarm threshold value can be reached through long-time smoke inlet, in fact, the smoke inlet amount is restrained, and the requirements of normal smoke detection and safety prevention and control cannot be met.
Disclosure of Invention
The invention solves the problems that in the prior art, the smoke detector samples actual smoke concentration data without process control of smoke concentration data change, and the smoke detector alarms inaccurately due to uneven smoke inlet amount of each smoke inlet of the smoke detector, and provides the optimized smoke detector and the collection concentration control method thereof.
The invention adopts the technical scheme that a method for controlling the acquisition concentration of a smoke detector comprises the following steps:
step 1: initializing a smoke detector;
step 2: collecting the smoke concentration at a time interval t, wherein t is more than 0;
and step 3: if the smoke concentration m at the current time kkSmoke concentration m greater than last timek-tIf k is more than or equal to t, the next step is carried out, otherwise, the step 2 is returned;
and 4, step 4: collecting the smoke concentration in real time, alarming if the smoke concentration reaches an alarm threshold value N, and carrying out the next step, otherwise, repeating the step 4;
and 5: if the smoke concentration reaches the adjustment threshold M, M is more than or equal to N and more than MkIf not, returning to the step 4;
step 6: and (5) carrying out concentration control to obtain an updated smoke concentration value M', and returning to the step 4.
Preferably, in step 2, the smoke concentration of the smoke detector includes a sum of smoke concentrations of n smoke inlets, and the smoke concentration δ of any smoke inlet is mk/n。
Preferably, in step 4, after the smoke concentration is collected, the smoke concentration is filtered.
Preferably, the step 6 comprises the steps of:
step 6.1: recording the current actual smoke concentration value M and the smoke concentration change value delta M after unit time T;
step 6.2: and (3) controlling the concentration value M '═ M-Delta M/Q of the smoke after concentration control, wherein M' < M, Q is a regulating parameter, and Q > 0.
Preferably, Q ═ X/(M-N + α), where 0 < α < 1, X is positively correlated with the acquisition region spatial volume.
Preferably, the
Beta is a regulating parameter, beta is more than 0, and V is the space volume of the acquisition region.
A smoke detector adopting the smoke detector acquisition concentration control method comprises a detector body, wherein an optical labyrinth is arranged in the detector, and a controller is arranged in the optical labyrinth in a matching manner; one surface of the detector is a mounting surface, and the other surface of the detector is provided with a smoke inlet platform; go into the cigarette platform and include n income cigarette mouths, n income cigarette mouth evenly distributed encircles and locates into outside the cigarette platform and communicate with optics maze space.
Preferably, go into cigarette platform and include the mounting panel, mounting panel and the coaxial setting of detector, be equipped with the clearance between mounting panel and the detector.
Preferably, the gap is 8-15 cm.
Preferably, n fins are arranged between the mounting plate and the detector, and 1 smoke inlet is formed by 2 adjacent fins, the outer edge of the mounting plate and the detector.
The invention provides an optimized smoke detector and a collection concentration control method thereof, wherein the smoke concentration is collected at a time interval t, t is more than 0, when the smoke concentration changes, the smoke concentration is collected in real time, an alarm is given when the smoke concentration reaches an alarm threshold value N, the concentration is controlled when the smoke concentration reaches an adjustment threshold value M, an updated smoke concentration value M' is obtained, and the smoke concentration is repeatedly collected to control the concentration; n smoke inlets are uniformly distributed and annularly arranged outside the smoke inlet platform and are communicated with the optical labyrinth space, so that the stability and the average of smoke inlet quantity are ensured, and the realization of a control method and the accuracy of the work of a smoke detector are ensured.
The invention can inhibit the rising speed of the smoke concentration when rising, so that the smoke alarm point is controlled in a reasonable range, the inhibition effect is stronger when the concentration rises faster, and the smoke concentration is ensured to be always in the alarm inhibition range without influencing normal alarm; promote smoke detector and advance the structure realization of cigarette volume and guarantee multi-angle uniformity, can feel to the cigarette and advance under cigarette volume and different installation angles, concentration rise unanimously and unanimous with environment concentration, can promote the difference that advances cigarette volume and guarantee different horizontal angles in the unit interval is little.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a schematic diagram of the smoke detector of the present invention;
fig. 3 is a schematic structural view of a smoke inlet platform in the smoke detector of the present invention.
Detailed Description
The present invention is described in further detail with reference to the following examples, but the scope of the present invention is not limited thereto.
The invention relates to a smoke detector acquisition concentration control method which comprises the following steps.
Step 1: initializing a smoke detector;
step 2: smoke concentration is collected at time intervals t, t > 0.
In step 2, the smoke concentration of the smoke detector includes the sum of the smoke concentrations of the n smoke inlets 1, and the smoke concentration δ of any smoke inlet 1 is mk/n。
In the present invention, initialization includes setting various parameters of the smoke detector, such as alarm thresholds, adjustment thresholds, etc.
In the invention, the cigarette inlet amount of the n cigarette inlet 1 is ensured to be constant, namely the smoke concentration is consistent, and the rationality of alarm triggering can be ensured, wherein m iskIs a measured value of 0 or more, and n is obviously a value of 0 or more.
And step 3: if the smoke concentration m at the current time kkSmoke concentration m greater than last timek-tIf k is larger than or equal to t, the next step is carried out, otherwise, the step 2 is returned.
In the invention, when the smoke concentration is found to be increased, the smoke detector detects smoke, and further tracking operation is required.
And 4, step 4: and (4) collecting the smoke concentration in real time, alarming if the smoke concentration reaches an alarm threshold value N, and carrying out the next step, otherwise, repeating the step (4).
And 4, after the smoke concentration is collected, filtering the smoke concentration.
In the invention, when the smoke concentration reaches the alarm threshold value, an alarm is firstly given out to show that the smoke concentration is higher, and meanwhile, the further adjustment operation is carried out.
And 5: if the smoke concentration reaches the adjustment threshold M, M is more than or equal to N and more than MkAnd if not, returning to the step 4.
In the invention, when the concentration required to be alarmed in some occasions is controlled within a certain range, an adjustment threshold value needs to be set, if the smoke concentration meets the threshold value, the adjustment is formally carried out, otherwise, the alarm is continuously kept and the next treatment is waited.
Step 6: and (5) carrying out concentration control to obtain an updated smoke concentration value M', and returning to the step 4.
The step 6 comprises the following steps:
step 6.1: recording the current actual smoke concentration value M and the smoke concentration change value delta M after unit time T;
step 6.2: and (3) controlling the concentration value M '═ M-Delta M/Q of the smoke after concentration control, wherein M' < M, Q is a regulating parameter, and Q > 0.
X/(M-N + α), where α < 0 < 1, X being positively correlated with the acquisition region spatial volume.
The above-mentioned
Beta is a regulating parameter, beta is more than 0, and V is the space volume of the acquisition region.
In the invention, when the smoke concentration starts to rise and reaches a certain value, the current actual smoke concentration value, which is generally a threshold value M, is recorded, of course, in the actual operation process, the concentration value is generally between M and 1.05M, and the unit time T is used as the recorded time node to obtain the smoke concentration change value.
In the invention, Q is used as a penalty operator, and when the difference between the actual smoke concentration and the alarm threshold value is larger, the smoke concentration is larger, which may cause the actually measured smoke concentration value to be increased in multiples and needs to be inhibited, so that in M' -M-delta M/Q, the smaller the Q value is, the larger the adjustment value is.
In the invention, Q and the space volume of the acquisition area are positively correlated, but can be adjusted by adjusting a parameter beta, and the correlation adjustment of the space volume and an adjustment value is carried out aiming at different spaces; for example, when the volume of the empty space is too large, if too many Q values are adjusted instantaneously, false alarm or even no alarm may be caused, which may delay fire rescue and should be avoided.
The invention also relates to a smoke detector adopting the smoke detector acquisition concentration control method, the smoke detector comprises a detector body, an optical maze 2 is arranged in the detector, and the optical maze 2 is matched with a controller; one surface of the detector is a mounting surface 3, and the other surface is provided with a smoke inlet platform 4; go into cigarette platform 4 and include n income cigarette mouth 1, n income cigarette mouth 1 evenly distributed encircles and locates into outside cigarette platform 4 and with 2 space intercommunication in optics maze.
In the invention, the core component of the smoke detector is the optical maze 2, and the smoke inlet platform 4 is uniformly provided with n smoke inlets 1 to conduct the outside and the optical maze 2, so that the smoke concentration of each smoke inlet 1 is uniform, and the condition of false alarm is reduced or avoided.
In the invention, the consistency of the smoke inlet amount can be better satisfied no matter which angle the smoke is fed.
Go into cigarette platform 4 and include mounting panel 5, mounting panel 5 and the coaxial setting of detector, be equipped with the clearance between mounting panel 5 and the detector.
The gap is 8-15 cm.
According to the invention, the height of the gap is raised, so that the smoke inlet amount in unit time can be increased, and the accuracy of smoke detection is ensured.
In the present invention, the height of the gap is the height of the fin 6.
Be equipped with n fin 6 between mounting panel 5 and detector, 2 adjacent fins 6 and the outer fringe of mounting panel 5, detector constitute 1 income cigarette mouth 1.
In the present invention, n is generally 8, i.e. the opening angle of 2 fins 6 per inlet 1 is 45 °.
In the invention, the opening angle of the fin 6 can be used as a guide plate of smoke, so that the smoke detection accuracy is higher.
In the invention, the cigarette inlet platform 4 can be detachably connected with the detector body through the hanging buckle 7, so that the convenience of maintenance is ensured on one hand, and the cigarette inlet platforms 4 with different numbers of cigarette inlets 1 can be detached and replaced at any time according to requirements on the other hand.
The method comprises the steps of collecting the smoke concentration at a time interval t, wherein t is larger than 0, collecting the smoke concentration in real time when the smoke concentration changes, alarming when the smoke concentration reaches an alarm threshold N, controlling the concentration when the smoke concentration reaches an adjustment threshold M to obtain an updated smoke concentration value M', and repeatedly collecting the smoke concentration to control the concentration; n smoke inlets 1 are uniformly distributed and annularly arranged outside the smoke inlet platform 4 and are communicated with the optical labyrinth 2 in space, so that the stability and the average of smoke inlet quantity are ensured, and the realization of a control method and the accuracy of the work of a smoke detector are ensured.
The invention can inhibit the rising speed of the smoke concentration when rising, so that the smoke alarm point is controlled in a reasonable range, the inhibition effect is stronger when the concentration rises faster, and the smoke concentration is ensured to be always in the alarm inhibition range without influencing normal alarm; promote smoke detector and advance the structure realization of cigarette volume and guarantee multi-angle uniformity, can feel to the cigarette and advance under cigarette volume and different installation angles, concentration rise unanimously and unanimous with environment concentration, can promote the difference that advances cigarette volume and guarantee different horizontal angles in the unit interval is little.
Claims (10)
1. A smoke detector acquisition concentration control method is characterized by comprising the following steps: the method comprises the following steps:
step 1: initializing a smoke detector;
step 2: collecting the smoke concentration at a time interval t, wherein t is more than 0;
and step 3: if the smoke concentration m at the current time kkSmoke concentration m greater than last timek-tIf k is more than or equal to t, the next step is carried out, otherwise, the step 2 is returned;
and 4, step 4: collecting the smoke concentration in real time, alarming if the smoke concentration reaches an alarm threshold value N, and carrying out the next step, otherwise, repeating the step 4;
and 5: if the smoke concentration reaches the adjustment threshold M, M is more than or equal to N and more than MkIf not, returning to the step 4;
step 6: and (5) carrying out concentration control to obtain an updated smoke concentration value M', and returning to the step 4.
2. The smoke detector acquisition concentration control method according to claim 1, wherein: in step 2, the smoke concentration of the smoke detector includes the sum of the smoke concentrations of the n smoke inlets, and the smoke concentration δ of any smoke inlet is mk/n。
3. The smoke detector acquisition concentration control method according to claim 1, wherein: and 4, after the smoke concentration is collected, filtering the smoke concentration.
4. The smoke detector acquisition concentration control method according to claim 1, wherein: the step 6 comprises the following steps:
step 6.1: recording the current actual smoke concentration value M and the smoke concentration change value delta M after unit time T;
step 6.2: and (3) controlling the concentration value M '═ M-Delta M/Q of the smoke after concentration control, wherein M' < M, Q is a regulating parameter, and Q > 0.
5. The smoke detector acquisition concentration control method according to claim 4, wherein: X/(M-N + α), where α < 0 < 1, X being positively correlated with the acquisition region spatial volume.
6. The smoke detector acquisition concentration control method according to claim 5, wherein: the above-mentioned
Beta is a regulating parameter, beta is more than 0, and V is the space volume of the acquisition region.
7. A smoke detector using the method for controlling the collection concentration of a smoke detector according to any one of claims 1 to 6, wherein: the smoke detector comprises a detector body, an optical maze is arranged in the detector, and a controller is arranged in the optical maze in a matching mode; one surface of the detector is a mounting surface, and the other surface of the detector is provided with a smoke inlet platform; go into the cigarette platform and include n income cigarette mouths, n income cigarette mouth evenly distributed encircles and locates into outside the cigarette platform and communicate with optics maze space.
8. The smoke detector of claim 7, wherein: go into cigarette platform and include the mounting panel, mounting panel and the coaxial setting of detector, be equipped with the clearance between mounting panel and detector.
9. The smoke detector of claim 8, wherein: the gap is 8-15 cm.
10. The smoke detector of claim 7, wherein: be equipped with n fin between mounting panel and detector, 2 adjacent fins constitute 1 income cigarette mouth with the outer fringe of mounting panel, detector.
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| CN201910867905.1A CN110634263A (en) | 2019-09-15 | 2019-09-15 | Smoke detector and acquisition concentration control method thereof |
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| CN201910867905.1A CN110634263A (en) | 2019-09-15 | 2019-09-15 | Smoke detector and acquisition concentration control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114283554A (en) * | 2022-01-17 | 2022-04-05 | 深圳市海曼科技股份有限公司 | Dust pollution compensation method, device, equipment and medium |
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| CN114283554B (en) * | 2022-01-17 | 2023-09-08 | 深圳市海曼科技股份有限公司 | Compensation method, device and equipment for dust pollution and medium |
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