CN113034837A - False alarm prevention smoke sensing detection alarm and alarm control method - Google Patents
False alarm prevention smoke sensing detection alarm and alarm control method Download PDFInfo
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- CN113034837A CN113034837A CN202110233631.8A CN202110233631A CN113034837A CN 113034837 A CN113034837 A CN 113034837A CN 202110233631 A CN202110233631 A CN 202110233631A CN 113034837 A CN113034837 A CN 113034837A
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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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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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Abstract
The invention provides a false alarm prevention smoke sensing detection alarm and an alarm control method. The invention reduces the energy consumption of the device, improves the accuracy of fire detection and reduces the false alarm of the alarm.
Description
Technical Field
The invention relates to the technical field of smoke detection alarms, in particular to a false alarm prevention smoke detection alarm and an alarm control method.
Background
The smoke detector is one of important devices for fire detection and alarm, and is widely applied to important fire-proof places such as families, factories, office buildings, hospitals, schools, museums and the like. The infrared scattering principle is mainly utilized to detect smoke generated when a fire disaster occurs, smoke particles enter a labyrinth of the detector to enable infrared light emitted by the emitting tube to be scattered, the intensity of the scattered infrared light and the smoke concentration have a certain linear relation, a main control chip of the detector judges the variable quantities to confirm whether the fire disaster occurs or not, and the detection mode often causes false alarm due to the influence of the environment.
At present, whether the temperature of a site exceeds a threshold value or not can be monitored in real time by arranging a temperature detector on the site, whether fire disasters occur on the site or not is judged by detecting the temperature and smoke in the site, and due to the fact that the temperature is often influenced by climate change or the number of indoor personnel changes, and the smoke alarm can be triggered when the personnel flow in dry weather, false alarms can be caused frequently, and more temperature detectors are arranged in the mode, and implementation cost and equipment energy consumption are increased.
Disclosure of Invention
The invention provides a false alarm prevention smoke sensing detection alarm and an alarm control method, wherein a temperature sensor is additionally arranged, temperature detection is triggered when the smoke sensor detects smoke, the temperature data at different moments after the smoke is detected are compared to obtain the temperature change trend, so that whether the temperature is in the rising trend is judged, whether a fire disaster occurs is judged according to the temperature change trend, and false alarm of the alarm is avoided.
The invention provides a false alarm prevention smoke sensing detection alarm which comprises a smoke sensor, a temperature sensor, a control module, a clock module and an alarm module, wherein the smoke sensor and the temperature sensor are respectively connected with the control module to transmit detection signals and data, and the control module is also respectively connected with the clock module and the alarm module.
The invention also provides an alarm control method based on the false alarm prevention smoke detection alarm, which comprises the following specific steps:
s1: triggering of the temperature sensor: when the smoke sensor detects a smoke signal, the smoke signal is transmitted to the control module, and then the temperature sensor is triggered to work;
s2: and (3) acquiring temperature data: after the temperature sensor is triggered, detecting the temperature of the surrounding environment within a certain time range, setting and initializing a counter by a control module, acquiring temperature data at a plurality of moments, and transmitting the acquired temperature data to the control module according to a time sequence;
s3: and (3) temperature comparison and judgment: comparing and judging the temperature obtained in the step S2, and if the temperature comparison result is that the temperature value at the next moment is greater than the temperature value at the previous moment, accumulating 1 by a counter;
s4: outputting an alarm signal: and after the comparison of all temperature values is finished, comparing the final value of the counter with a set alarm response value, and if the final value of the counter is greater than or equal to the alarm response value, outputting an alarm signal to the alarm module by the control module.
Preferably, in step S3, the temperature comparison determines that the acquired temperature T0 at the first time is compared with the acquired temperature T1 at the second time, and the higher temperature value of the two is continuously compared with the temperature at the next time until the comparison of all the temperature values is completed.
Preferably, in step S3, the temperature comparison and judgment compares the acquired temperature TN at the previous time with the temperature TN +1 at the next adjacent time until the comparison of all temperature values is completed.
Preferably, in step S2, when the temperatures at a plurality of times are acquired within a certain time range, the interval time between adjacent times is the same, and the clock module controls the temperature sensor to acquire temperature data at different times.
Preferably, in step S4, the alarm response value is set to be the product of the number of all temperature values and a percentage, and the percentage is greater than or equal to 60%.
Preferably, after step S2, a preliminary judgment process is provided to compare the detected temperature value with a fire alarm temperature threshold value, and when the temperature value reaches the fire alarm temperature threshold value, a temperature comparison judgment is performed.
The invention has the following beneficial effects:
1. set up temperature sensor and control module in smoke detector inside and be connected, the integrative implementation of being convenient for of detector integration, temperature sensor triggers when smoke sensor detects smog, has reduced the energy consumption of device.
2. After the temperature sensor is triggered, the clock module controls the acquisition of temperature values at different moments within a certain time after the triggering to be compared, the temperature change trend within the period of time is obtained, whether a fire disaster occurs or not is judged according to the temperature change trend, and the false alarm of the detector is reduced.
3. The device processor is provided with temperature preliminary judgment before temperature comparison judgment, namely after the temperature sensor is triggered, when the real-time temperature reaches a set temperature alarm threshold value, temperature comparison judgment is carried out again, and the processing pressure of the data of the control module processor is reduced.
Drawings
FIG. 1 is a schematic view of the connection structure of the device of the present invention;
FIG. 2 is a schematic flow chart of the method of example 1 of the present invention;
FIG. 3 is a schematic flow chart of the method of embodiment 2 of the present invention.
Detailed Description
In the following description, technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment 1 of the invention provides an anti-misreport smoke sensing detection alarm, which comprises a smoke sensor, a temperature sensor, a control module, a clock module and an alarm module, wherein the smoke sensor and the temperature sensor are respectively connected with the control module to transmit detection signals and data, the smoke sensor detects whether smoke is generated in the current environment in real time, the temperature sensor is in a standby state in a normal state, and the temperature sensor is triggered to work after detecting smoke signals;
the control module is also respectively connected with the clock module and the alarm module, temperature values at different moments after smoke is detected are obtained through the clock module, the temperature values are processed and judged to obtain a temperature change trend, and when the temperature is in an increasing trend, the alarm module is triggered to send an alarm signal.
Example 2
Embodiment 2 of the present invention provides an alarm control method for a false alarm prevention smoke detection alarm based on embodiment 1, including the steps of:
s1: triggering of the temperature sensor: when the smoke sensor detects a smoke signal, the smoke signal is transmitted to the control module, and then the temperature sensor is triggered to work;
when the control module receives a smoke signal detected by the smoke sensor, the temperature sensor is driven to detect the ambient temperature, and the energy consumption of the device is reduced.
S2: and (3) acquiring temperature data: after the temperature sensor is triggered, the temperature of the surrounding environment is detected within a certain time range, meanwhile, the control module sets the counter count and initializes, and obtains temperature data at a plurality of moments, in this embodiment, it is set to obtain temperature data at ten different moments, which are respectively marked as T0-T9, and the obtained temperature data are transmitted to the control module according to the time sequence, in this embodiment, the interval time for obtaining the temperature data at each adjacent moment is the same.
After the smoke is detected, a plurality of temperature signals at different moments are obtained and compared, so that the change trend of the temperature is obtained, whether a fire disaster happens or not is judged according to the change of the temperature, and false alarm caused by temperature fluctuation due to abnormal conditions is avoided.
S3: and (3) temperature comparison and judgment: comparing and judging the temperatures acquired in the step S2, comparing the acquired temperature T0 at the first time with the acquired temperature T1 at the second time, continuously comparing the higher temperature values with the temperature at the next time, i.e., T2, until the comparison of all the temperature values is completed, if the temperature comparison result is that the temperature value at the next time is greater than the temperature value at the previous time, the counter increments by 1, in this comparison method, each time the comparison is performed, the temperature at the previous time is always the highest temperature value in the time period, the speed of the temperature value comparison process is slightly slow, but finally, after the temperature comparison at all the moments is finished, the obtained temperature change trend is more accurate, if an alarm signal is triggered, the temperature is inevitably in the whole rising trend, and false alarm of the detector caused by continuous and unstable fluctuation of the temperature due to abnormal conditions in the period of time is avoided.
When the temperature comparison and judgment is performed in step S3, the comparison and judgment may also be performed in a manner of comparing two temperature values at adjacent times, and the specific process is as follows: comparing the temperature value obtained in the step S2 with the temperature at the previous time and the temperature at the next adjacent time, that is, comparing T0 with T1, T1 with T2, T2 with T3, T3 with T4, T4 with T5, T5 with T6, T6 with T7, T7 with T8, and T8 with T9, respectively, if the temperature value at the previous time is less than the temperature value at the next time, the counter accumulates 1, the processor does not need to wait for the previous comparison result when performing the temperature comparison algorithm, the obtained temperature values can be directly compared in pairs, the temperature fluctuation resistance is slightly low but the processing rate is greatly improved, and the time length of the temperature sensor for collecting the temperature data can be adjusted according to the actual situation, so as to improve the temperature fluctuation resistance of the device.
S4: outputting an alarm signal: after the comparison of all temperature values is completed, the final value of the counter is compared with a set alarm response value, the alarm response value is set to be the product of the number and the percentage of all temperature values, and if the alarm response value is not an integer, the alarm response value is rounded upwards, in the embodiment, the alarm response value is set to be 6, namely the number of the temperature values participating in the comparison is 10 x 60%, if the count of the final value of the counter is not less than 6, the control module outputs an alarm signal to the alarm module, and the alarm module can adopt the modes of sound-light alarm or sending the alarm signal to a monitoring end and the like.
Example 3
The embodiment 3 of the invention provides an alarm control method of a false alarm prevention smoke detection alarm, which is based on the embodiment 2 that the temperature preliminary judgment is added after the step S2, and the fixed value comparison is carried out based on the set fire alarm temperature threshold, and the specific steps are as follows:
wherein the steps S1 and S2 are the same as those in the above embodiment 2, and the description thereof will not be repeated;
s3: and (4) primarily judging the temperature, namely judging whether the current temperature reaches a set fire alarm temperature threshold value or not after the smoke sensor detects that smoke triggers the temperature sensor to work, comparing the received temperature values at all times if the current temperature reaches the threshold value, not comparing the temperature values if the current temperature does not reach the threshold value, and keeping the temperature sensor in a standby state.
S4: and (3) temperature comparison and judgment: when the temperature reaches the threshold value, the temperature acquired in step S2 is compared and judged, and the specific judgment process is the same as that of step S3 of embodiment 2.
S5: outputting an alarm signal: and after the comparison of all temperature values is completed, comparing the final value of the counter with a set alarm response value, and if the final value of the counter is greater than or equal to the set alarm response value, outputting an alarm signal to the alarm module by the control module. The alarm response value is set in the same manner as described in embodiment 2.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (7)
1. The utility model provides a prevent misreport smoke detection alarm, its characterized in that, includes smoke transducer, temperature sensor, control module, clock module and alarm module, smoke transducer and temperature sensor respectively with control module connects and carries out the transmission of detected signal and data, control module still respectively with clock module and alarm module are connected.
2. An alarm control method of the false alarm prevention smoke detection alarm device according to claim 1, wherein the method comprises the following steps:
s1: triggering of the temperature sensor: when the smoke sensor detects a smoke signal, the smoke signal is transmitted to the control module, and then the temperature sensor is triggered to work;
s2: and (3) acquiring temperature data: after the temperature sensor is triggered, detecting the temperature of the surrounding environment within a certain time range, setting and initializing a counter by a control module, acquiring temperature data at a plurality of moments, and transmitting the acquired temperature data to the control module according to a time sequence;
s3: and (3) temperature comparison and judgment: comparing and judging the temperature obtained in the step S2, and if the temperature comparison result is that the temperature value at the next moment is greater than the temperature value at the previous moment, accumulating 1 by a counter;
s4: outputting an alarm signal: and after the comparison of all temperature values is finished, comparing the final value of the counter with a set alarm response value, and if the final value of the counter is greater than or equal to the alarm response value, outputting an alarm signal to the alarm module by the control module.
3. The alarm control method of the false alarm-proof smoke-sensing detection alarm device according to claim 2, wherein in step S3, the temperature comparison and judgment is to compare the acquired temperature T0 at the first moment with the acquired temperature T1 at the second moment, and to continue to compare the higher temperature values with the temperature at the next moment until the comparison of all the temperature values is completed.
4. The alarm control method of the false alarm prevention smoke detection alarm according to claim 2, wherein in step S3, the temperature comparison and judgment compares the acquired temperature TN at the previous moment with the temperature TN +1 at the next adjacent moment until the comparison of all temperature values is completed.
5. The alarm control method of the false alarm prevention smoke detection alarm according to any one of claims 3 to 4, wherein in step S2, when the temperatures at a plurality of times are acquired within a certain time range, the interval time between each adjacent time is the same, and the clock module controls the temperature sensor to acquire the temperature data at different times.
6. The alarm control method of the false alarm-proof smoke-sensing alarm according to claim 5, wherein in step S4, the alarm response value is set to be the product of the number of all temperature values and a percentage, and the percentage is greater than or equal to 60%.
7. The alarm control method of the false alarm prevention smoke detection alarm according to claim 6, wherein after the step S2, a preliminary judgment process is provided to compare the detected temperature value with a fire alarm temperature threshold value, and when the temperature value reaches the fire alarm temperature threshold value, a temperature comparison judgment is performed.
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Cited By (4)
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| CN113554842A (en) * | 2021-07-26 | 2021-10-26 | 嵊州图腾智能电子有限公司 | Remote alarm transmitting terminal of smoke machine control system |
| CN114664045A (en) * | 2022-03-22 | 2022-06-24 | 三一重机有限公司 | Fireproof alarm method, device and system for excavator |
| CN115047927A (en) * | 2022-05-31 | 2022-09-13 | 北京北方华创微电子装备有限公司 | Temperature monitoring method and device in semiconductor process |
| CN115171320A (en) * | 2022-06-29 | 2022-10-11 | 万霖消防技术有限公司 | Fire-fighting monitoring method and system |
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