CN114220241B - Smoke sensation ash accumulation detection method based on infrared emission frequency and duty cycle waveform - Google Patents
Smoke sensation ash accumulation detection method based on infrared emission frequency and duty cycle waveform Download PDFInfo
- Publication number
- CN114220241B CN114220241B CN202111625776.9A CN202111625776A CN114220241B CN 114220241 B CN114220241 B CN 114220241B CN 202111625776 A CN202111625776 A CN 202111625776A CN 114220241 B CN114220241 B CN 114220241B
- Authority
- CN
- China
- Prior art keywords
- smoke
- infrared
- sensing
- duty cycle
- emission
- 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.)
- Active
Links
- 239000000779 smoke Substances 0.000 title claims abstract description 77
- 238000001514 detection method Methods 0.000 title claims abstract description 39
- 238000009825 accumulation Methods 0.000 title claims abstract description 14
- 230000035807 sensation Effects 0.000 title description 2
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 6
- 230000008021 deposition Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 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
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
The invention relates to a smoke-sensing dust accumulation detection method based on infrared emission frequency and duty cycle waveforms, which specifically comprises the following steps: s1, an infrared transmitting tube transmits infrared signals with various duty ratios to an infrared receiving tube, and each type of the infrared signals with the duty ratios corresponds to various infrared transmitting frequencies; s2, the infrared receiving tube judges whether infrared signals with corresponding duty ratios are received or not, and calculates smoke detection components according to the quantity of the received infrared signals and sends the smoke detection components to the controller; and S3, the controller calculates the smoke-sensing accumulated ash value according to the received smoke-sensing detection score, judges whether the smoke-sensing accumulated ash value is smaller than a preset smoke-sensing threshold value, and if so, sends a smoke-sensing cleaning prompt message to the mobile terminal. Compared with the prior art, the invention has the advantages of improving the accuracy of the detection result of the dust accumulation in the smoke alarm, avoiding the false alarm of fire caused by the failure of the smoke sensor, and the like.
Description
Technical Field
The invention relates to the technical field of fire security, in particular to a smoke dust detection method based on infrared emission frequency and duty cycle waveforms.
Background
At present, whether dense smoke occurs or not is judged through the corresponding relation between infrared signal transmission and receiving of infrared pair tubes in the smoke alarm. Because the installation environments of the smoke alarm are different, the smoke alarm can have dust accumulation inside after a period of time, and the false alarm of the smoke alarm can be caused by the occurrence of the dust accumulation. Therefore, a new method is needed to judge the dust accumulation condition in the smoke alarm, so that the smoke alarm of dust accumulation can be maintained in time, and the false fire alarm condition of the smoke alarm can be reduced.
Disclosure of Invention
The invention aims to overcome the defect that the smoke alarm in the prior art has false alarm to fire caused by internal dust accumulation, and provides a smoke dust accumulation detection method based on infrared emission frequency and duty cycle waveforms.
The aim of the invention can be achieved by the following technical scheme:
a smoke-sensing dust accumulation detection method based on infrared emission frequency and duty cycle waveforms specifically comprises the following steps:
s1, an infrared transmitting tube transmits infrared signals with various duty ratios to an infrared receiving tube, and each type of the infrared signals with the duty ratios corresponds to various infrared transmitting frequencies;
s2, the infrared receiving tube judges whether infrared signals with corresponding duty ratios are received or not, and calculates smoke detection components according to the quantity of the received infrared signals and sends the smoke detection components to the controller;
and S3, the controller calculates the smoke-sensing accumulated ash value according to the received smoke-sensing detection score, judges whether the smoke-sensing accumulated ash value is smaller than a preset smoke-sensing threshold value, and if so, sends a smoke-sensing cleaning prompt message to the mobile terminal.
The duty cycle type of the infrared signal includes a 50% duty cycle and a 30% duty cycle.
Further, the emission cycle of the infrared signal with the duty ratio of 50% is 1 time, and the emission cycle of the infrared signal with the duty ratio of 30% is 2 times.
Further, the infrared signal with the duty ratio of 50% and the infrared signal with the duty ratio of 30% are emitted according to the same plurality of infrared emission frequencies in each emission round.
Types of infrared emission frequencies include 100hz, 1000hz, and 10000hz.
Further, the process of emitting the infrared signal in the step S1 is specifically as follows:
s11, emitting infrared signals at 50% duty cycle according to infrared emission frequencies of 100hz, 1000hz and 10000hz respectively;
s12, emitting infrared signals at the infrared emission frequencies of 100hz, 1000hz and 10000hz respectively with a duty cycle of 30 percent;
s13, emitting infrared signals at the infrared emission frequencies of 100hz, 1000hz and 10000hz respectively with a duty cycle of 30 percent.
The number of the infrared signals transmitted by the same infrared transmitting frequency in each transmitting round is 10.
Further, the infrared receiving tube detects whether 9 or more infrared signals with the same duty ratio and infrared emission frequency are received in each emission round, if yes, the infrared signals with the corresponding duty ratio are judged to be received, and smoke detection scores are calculated.
Further, the smoke detection corresponding to each infrared emission frequency in the step S11 is classified as the highest score, the smoke detection corresponding to each infrared emission frequency in the step S12 is classified as the middle score, and the smoke detection corresponding to each infrared emission frequency in the step S13 is classified as the lowest score.
The smoke sensing threshold in step S3 specifically includes a first smoke sensing threshold and a second smoke sensing threshold, if the smoke sensing accumulated ash value is smaller than the first smoke sensing threshold, the controller sends prompt information for cleaning immediately, if the smoke sensing accumulated ash value is located between the first smoke sensing threshold and the second smoke sensing threshold, the controller sends prompt information for suggesting cleaning, and if the smoke sensing accumulated ash value is larger than the second smoke sensing threshold, the controller sends prompt information for cleaning unnecessary.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, infrared signals with different infrared emission frequencies and duty cycle waveforms are transmitted to the pipe through the infrared, the ash accumulation degree in the smoke alarm is judged according to the receiving effect of the infrared signals, and compared with the case that only one infrared signal is transmitted once, the smoke alarm not only transmits multiple infrared signals, but also provides multiple infrared emission frequencies and duty cycles, so that the accuracy of the detection result of ash accumulation in the smoke alarm is effectively improved, and therefore, maintenance staff can clean the smoke in time, and the fire false alarm caused by failure of the smoke sensor is avoided.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
Examples
As shown in fig. 1, a smoke-sensing ash deposition detection method based on infrared emission frequency and duty cycle waveforms specifically includes the following steps:
s1, an infrared transmitting tube transmits infrared signals with various duty ratios to an infrared receiving tube, and each type of the infrared signals with the duty ratios corresponds to various infrared transmitting frequencies;
s2, the infrared receiving tube judges whether infrared signals with corresponding duty ratios are received or not, and calculates smoke detection components according to the quantity of the received infrared signals and sends the smoke detection components to the controller;
and S3, the controller calculates the smoke-sensing accumulated ash value according to the received smoke-sensing detection score, judges whether the smoke-sensing accumulated ash value is smaller than a preset smoke-sensing threshold value, and if so, sends a smoke-sensing cleaning prompt message to the mobile terminal.
The duty cycle type of the infrared signal includes a 50% duty cycle and a 30% duty cycle.
The emission cycle of the infrared signal with the duty ratio of 50% is 1 time, and the emission cycle of the infrared signal with the duty ratio of 30% is 2 times.
An infrared signal with a duty cycle of 50% and an infrared signal with a duty cycle of 30% are emitted according to the same plurality of infrared emission frequencies in each emission round.
Types of infrared emission frequencies include 100hz, 1000hz, and 10000hz.
The process of emitting the infrared signal in step S1 is specifically as follows:
s11, emitting infrared signals at 50% duty cycle according to infrared emission frequencies of 100hz, 1000hz and 10000hz respectively;
s12, emitting infrared signals at the infrared emission frequencies of 100hz, 1000hz and 10000hz respectively with a duty cycle of 30 percent;
s13, emitting infrared signals at the infrared emission frequencies of 100hz, 1000hz and 10000hz respectively with a duty cycle of 30 percent.
The infrared signal is transmitted with the same infrared transmitting frequency in 10 in each transmitting round.
In this embodiment, steps S11 to S13 are a set of transmission sequences, and the interval duration between adjacent transmission sequences is 2 hours.
And detecting whether 9 or more infrared signals with the same duty ratio and infrared emission frequency are received by the infrared receiving tube in each emission round, if so, judging that the infrared signals with the corresponding duty ratio are received, and calculating smoke detection scores.
In the step S11, the smoke detection corresponding to each infrared emission frequency is divided into the highest score, in the step S12, the smoke detection corresponding to each infrared emission frequency is divided into the middle score, and in the step S13, the smoke detection corresponding to each infrared emission frequency is divided into the lowest score.
In this embodiment, the smoke detection corresponding to each infrared emission frequency in step S11 is divided into 3 minutes, the smoke detection corresponding to each infrared emission frequency in step S12 is divided into 2 minutes, and the smoke detection corresponding to each infrared emission frequency in step S13 is divided into 1 minute and 18 minutes.
In step S3, the smoke sensing threshold specifically includes a first smoke sensing threshold and a second smoke sensing threshold, if the smoke sensing accumulated ash value is smaller than the first smoke sensing threshold, the controller sends prompt information for cleaning immediately, if the smoke sensing accumulated ash value is located between the first smoke sensing threshold and the second smoke sensing threshold, the controller sends prompt information for suggesting cleaning, and if the smoke sensing accumulated ash value is larger than the second smoke sensing threshold, the controller sends prompt information for cleaning unnecessary.
In this embodiment, the first smoke perception threshold is 6 minutes, and the second smoke perception threshold is 12 minutes.
Furthermore, the particular embodiments described herein may vary from one embodiment to another, and the above description is merely illustrative of the structure of the present invention. Equivalent or simple changes of the structure, characteristics and principle of the present invention are included in the protection scope of the present invention. Various modifications or additions to the described embodiments or similar methods may be made by those skilled in the art without departing from the structure of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (3)
1. The smoke-sensing dust accumulation detection method based on the infrared emission frequency and the duty cycle waveform is characterized by comprising the following steps of:
s1, an infrared transmitting tube transmits infrared signals with various duty ratios to an infrared receiving tube, and each type of the infrared signals with the duty ratios corresponds to various infrared transmitting frequencies;
s2, the infrared receiving tube judges whether infrared signals with corresponding duty ratios are received or not, and calculates smoke detection components according to the quantity of the received infrared signals and sends the smoke detection components to the controller;
s3, the controller calculates a smoke-sensing accumulated ash value according to the received smoke-sensing detection score in an accumulated mode, judges whether the smoke-sensing accumulated ash value is smaller than a preset smoke-sensing threshold value, and if so, sends a smoke-sensing cleaning prompt message to the mobile terminal;
the duty cycle type of the infrared signal includes a 50% duty cycle and a 30% duty cycle;
the emission turns of the infrared signal with the duty ratio of 50% are 1 time, and the emission turns of the infrared signal with the duty ratio of 30% are 2 times;
the infrared signals with the duty ratio of 50% and the infrared signals with the duty ratio of 30% are emitted according to the same plurality of infrared emission frequencies in each emission round;
types of the infrared emission frequencies include 100hz, 1000hz and 10000hz;
the process of emitting the infrared signal in the step S1 specifically includes the following steps:
s11, emitting infrared signals at 50% duty cycle according to infrared emission frequencies of 100hz, 1000hz and 10000hz respectively;
s12, emitting infrared signals at the infrared emission frequencies of 100hz, 1000hz and 10000hz respectively with a duty cycle of 30 percent;
s13, emitting infrared signals at the infrared emission frequencies of 100hz, 1000hz and 10000hz respectively with a duty cycle of 30 percent;
the emission quantity of the infrared signals with the same infrared emission frequency in each emission round is 10;
and the infrared receiving tube detects whether 9 or more infrared signals with the same duty ratio and infrared emission frequency are received in each emission round, if so, judges that the infrared signals with the corresponding duty ratio are received and calculates smoke detection scores.
2. The smoke detection method based on the infrared emission frequency and the duty cycle waveform according to claim 1, wherein the smoke detection corresponding to each infrared emission frequency in step S11 is classified into a highest score, the smoke detection corresponding to each infrared emission frequency in step S12 is classified into a middle score, and the smoke detection corresponding to each infrared emission frequency in step S13 is classified into a lowest score.
3. The smoke detection method based on the infrared emission frequency and the duty cycle waveform according to claim 2, wherein the smoke threshold in the step S3 specifically includes a first smoke threshold and a second smoke threshold, if the smoke deposition value is smaller than the first smoke threshold, the controller sends prompt information for immediate cleaning, if the smoke deposition value is between the first smoke threshold and the second smoke threshold, the controller sends prompt information for suggesting cleaning, and if the smoke deposition value is greater than the second smoke threshold, the controller sends prompt information for no cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111625776.9A CN114220241B (en) | 2021-12-28 | 2021-12-28 | Smoke sensation ash accumulation detection method based on infrared emission frequency and duty cycle waveform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111625776.9A CN114220241B (en) | 2021-12-28 | 2021-12-28 | Smoke sensation ash accumulation detection method based on infrared emission frequency and duty cycle waveform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114220241A CN114220241A (en) | 2022-03-22 |
| CN114220241B true CN114220241B (en) | 2023-11-10 |
Family
ID=80706360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111625776.9A Active CN114220241B (en) | 2021-12-28 | 2021-12-28 | Smoke sensation ash accumulation detection method based on infrared emission frequency and duty cycle waveform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114220241B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19547269A1 (en) * | 1995-12-19 | 1997-06-26 | Dynamit Nobel Ag | Removal of cinders and ashes from fire grates in boiler plants |
| CN102661746A (en) * | 2012-05-23 | 2012-09-12 | 北京科技大学 | Sensor main mounting boxes and passive optical sensor |
| CN104467762A (en) * | 2014-12-05 | 2015-03-25 | 青岛鼎信通讯股份有限公司 | Method for modulating transmission intensity of infrared transmission pipe through PWM |
| CN105825596A (en) * | 2016-03-16 | 2016-08-03 | 新达通科技股份有限公司 | Dustproof reminding circuit and method for infrared sensor in ATM (Automatic Teller Machine) |
| CN113418478A (en) * | 2021-07-26 | 2021-09-21 | 重庆潍睿科技有限公司 | Method and system for detecting thickness of dust deposited on outer wall of pipeline |
-
2021
- 2021-12-28 CN CN202111625776.9A patent/CN114220241B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19547269A1 (en) * | 1995-12-19 | 1997-06-26 | Dynamit Nobel Ag | Removal of cinders and ashes from fire grates in boiler plants |
| CN102661746A (en) * | 2012-05-23 | 2012-09-12 | 北京科技大学 | Sensor main mounting boxes and passive optical sensor |
| CN104467762A (en) * | 2014-12-05 | 2015-03-25 | 青岛鼎信通讯股份有限公司 | Method for modulating transmission intensity of infrared transmission pipe through PWM |
| CN105825596A (en) * | 2016-03-16 | 2016-08-03 | 新达通科技股份有限公司 | Dustproof reminding circuit and method for infrared sensor in ATM (Automatic Teller Machine) |
| CN113418478A (en) * | 2021-07-26 | 2021-09-21 | 重庆潍睿科技有限公司 | Method and system for detecting thickness of dust deposited on outer wall of pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114220241A (en) | 2022-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6028513A (en) | Wireless activation of multiple alarm devices upon triggering of a single device | |
| TWI475517B (en) | Alarm device | |
| CN114220241B (en) | Smoke sensation ash accumulation detection method based on infrared emission frequency and duty cycle waveform | |
| WO2018205849A1 (en) | Labyrinth structure for smoke detector and smoke detection method therefor | |
| CN110198526B (en) | Combustor fault diagnosis system based on thing networking | |
| CN114979778A (en) | Network abnormal behavior detection system based on big data | |
| CN111000292A (en) | Method for preventing electronic cigarette from being triggered by mistake during automatic work | |
| CN113465270A (en) | Fault prompting method for refrigerator | |
| CN108155967B (en) | Method and device for transmitting sensing data, sensor, gateway and system | |
| JP2019036179A (en) | Transmission system of disaster prevention facility | |
| CN215180009U (en) | Gas monitoring device with humiture is corrected function | |
| CN101299782A (en) | Method and device for detecting double-audio signal | |
| CN1815516B (en) | Smoke fog alarm | |
| JP4527326B2 (en) | Flame detection device | |
| JP2002214036A (en) | Ultraviolet ray type flame sensor | |
| RU2720147C1 (en) | Method of chips in oil detecting and device for its implementation | |
| JP2007280005A (en) | Fire alarm facility | |
| JP5767507B2 (en) | Alarm | |
| CN2602372Y (en) | Fume detector | |
| CN110349392A (en) | Fire alarm installation and method | |
| CN219122769U (en) | Fire alarm system | |
| CN203159860U (en) | Cylindrical knitting machine | |
| CN102954502A (en) | Fire extinguishing alarming and automatic ignition device of gas cooker | |
| JP6282039B2 (en) | Alarm system | |
| CN110332988B (en) | System and method for processing PD (proportion integration) signal of optical fiber laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |