CN113034837B - 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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- CN113034837B CN113034837B CN202110233631.8A CN202110233631A CN113034837B CN 113034837 B CN113034837 B CN 113034837B CN 202110233631 A CN202110233631 A CN 202110233631A CN 113034837 B CN113034837 B CN 113034837B
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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 an anti-false alarm smoke detection alarm and an alarm control method, wherein the device comprises a smoke sensor, a temperature sensor, a control module, a clock module and an alarm module, wherein the temperature sensor is triggered after detecting a smoke signal by the smoke sensor, and after the temperature sensor triggers work, the clock module acquires temperature data at a plurality of different moments and transmits the temperature data to the control module for comparison processing, and whether fire disaster occurs is judged according to the change trend of the temperature in a certain time. 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 an anti-false alarm 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 fireproof places such as families, factories, office buildings, hospitals, schools, museums and the like. The main control chip of the detector judges the variation quantities to confirm whether fire occurs or not, and the detection mode usually causes false alarm due to the influence of environment.
At present, whether the temperature of the site exceeds a threshold value or not can be monitored in real time by arranging a temperature detector, whether the site is in fire disaster or not is judged by detecting the temperature and smoke in the site, and as the temperature is often influenced by climate change or the quantity change of indoor personnel, the flow of the personnel can trigger smoke alarm sometimes in dry weather, so that false alarm is often caused, and the mode is provided with more temperature detectors, so that the implementation cost and the equipment energy consumption are increased.
Disclosure of Invention
The invention provides a smoke detection alarm capable of preventing false alarm and an alarm control method, wherein a temperature sensor is additionally arranged, when smoke is detected by the smoke sensor, temperature detection is triggered, temperature change trends are obtained by comparing temperature data at different moments after the smoke is detected, whether the temperature is in an ascending trend is further judged, whether fire disaster occurs is judged according to the temperature change trends, and false alarm of the alarm is avoided.
The invention provides an anti-false alarm smoke 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 a temperature sensor: when the smoke sensor detects a smoke signal, the smoke signal is transmitted to the control module, so that the temperature sensor is triggered to work;
s2: and (3) collecting temperature data: after the temperature sensor is triggered, detecting the temperature of the surrounding environment within a certain time range, setting a counter count by a control module, initializing the counter count, acquiring temperature data at a plurality of moments, and transmitting the acquired temperature data to the control module according to time sequence;
s3: and (3) temperature comparison and judgment: comparing and judging the temperature obtained in the step S2, and accumulating 1 by a counter if the temperature value at the later moment is larger than the temperature value at the former moment as a result of temperature comparison;
s4: and outputting an alarm signal: after the comparison of all the temperature values is completed, the final value of the counter is compared with the set alarm response value, and if the final value of the counter is larger than or equal to the alarm response value, the control module outputs an alarm signal to the alarm 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 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 determines that the acquired temperature TN at the previous time is compared with the temperature tn+1 at the next time until the comparison of all the temperature values is completed.
Preferably, in step S2, when temperatures at a plurality of moments are acquired within a certain time range, the interval time between each two adjacent moments is the same, and the clock module controls the temperature sensor to acquire temperature data at different moments.
Preferably, in step S4, the alarm response value is set to be the product of the number of all the temperature values and a percentage, where the percentage is greater than or equal to 60%.
Preferably, after step S2, a preliminary judgment process is provided, the detected temperature value is compared with the fire alarm temperature threshold, and when the temperature value reaches the fire alarm temperature threshold, a temperature comparison judgment is performed.
The beneficial effects of the invention are as follows:
1. the temperature sensor is arranged in the smoke detector and connected with the control module, the detector is integrated into a whole, the implementation is convenient, the temperature sensor is triggered when the smoke sensor detects smoke, and the energy consumption of the device is reduced.
2. After the temperature sensor is triggered, the clock module is used for controlling the acquisition of temperature values at different moments in a certain period of time after the triggering, the temperature change trend in the period of time is obtained, whether fire disaster occurs or not is judged according to the temperature change trend, and 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, the temperature comparison judgment is carried out again, and the processing pressure of the control module processor data is reduced.
Drawings
FIG. 1 is a schematic view of the device connection structure of the present invention;
FIG. 2 is a schematic flow chart of the method of embodiment 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, the technical solutions of the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The embodiment 1 of the invention provides an anti-false alarm smoke detection alarm, as shown in fig. 1, comprising 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 normal state, and the temperature sensor is triggered to work after the smoke sensor detects the smoke signals;
the control module is also respectively connected with the clock module and the alarm module, acquires temperature values at different moments after detecting smoke through the clock module, processes and judges to acquire a temperature change trend, and when the temperature is in an ascending trend, the alarm module is triggered to send an alarm signal.
Example 2
Embodiment 2 of the present invention provides an alarm control method of a smoke detection alarm for preventing false alarm, based on the above embodiment 1, comprising the following steps:
s1: triggering a temperature sensor: when the smoke sensor detects a smoke signal, the smoke signal is transmitted to the control module, so that 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, so that the energy consumption of the device is reduced.
S2: and (3) collecting temperature data: after the temperature sensor is triggered, detecting the temperature of the surrounding environment within a certain time range, setting a counter and initializing by the control module, acquiring temperature data of a plurality of moments, setting and acquiring temperature value data of ten different moments in the embodiment, respectively recording the temperature value data as T0-T9, transmitting the acquired temperature data to the control module according to time sequence, and in the embodiment, acquiring the interval time of the temperature data of each adjacent moment to be the same.
And after detecting the smoke, acquiring a plurality of temperature signals at different moments for comparison, further acquiring the change trend of the temperature, judging whether fire disaster occurs according to the change of the temperature, and avoiding false alarm caused by temperature fluctuation due to abnormal conditions.
S3: and (3) temperature comparison and judgment: comparing and judging the temperature obtained in the step S2, comparing the obtained temperature T0 at the first moment with the obtained temperature T1 at the second moment, continuously comparing the temperature values with the temperature T2 at the next moment until the comparison of all the temperature values is completed, accumulating 1 by a counter if the temperature value at the next moment is larger than the temperature value at the previous moment as a result of the temperature comparison, wherein the comparison mode is that the temperature at the previous moment always has the highest temperature value in the time period when the comparison is carried out each time, the speed of the temperature value comparison processing is slightly slow, but the obtained temperature change trend is more accurate after the temperature comparison at the final moment is completed, and if an alarm signal is triggered, the temperature is always in an ascending trend integrally, so that the false alarm of a detector caused by unstable fluctuation of the temperature duration due to abnormal conditions in the time is avoided.
When the temperature comparison and judgment are performed in the step S3, the comparison and judgment can be performed by adopting a mode of comparing the temperature values at adjacent moments in pairs, and the specific process is as follows: comparing the temperature value obtained in the step S2 with the temperature of the next adjacent moment, namely 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, T8 with T9 respectively, if the temperature value of the previous moment is smaller than the temperature value of the next moment, the counter accumulates 1, the processor does not need to wait for the previous comparison result when carrying out the algorithm of the temperature comparison mode, the obtained temperature values can be directly compared pairwise, the temperature fluctuation resistance is slightly low, but the processing rate is greatly improved, and the time length of the temperature data collected by the temperature sensor can be adjusted according to actual conditions so as to improve the temperature fluctuation resistance of the device.
S4: and outputting an alarm signal: after the comparison of all the 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 the temperature values, if the alarm response value is not an integer, the alarm response value is rounded up, in the embodiment, the alarm response value is set to be 6, namely, the number of the temperature values involved in the comparison is 10 x 60%, if the final value count of the counter is more than or equal to 6, the control module outputs an alarm signal to the alarm module, and the alarm module can adopt the modes of audible and visual 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 smoke detection alarm capable of preventing false alarm, which is based on the fact that the temperature preliminary judgment is added after the step S2 in the embodiment 2, and the fixed value comparison is carried out based on the set fire alarm temperature threshold, and specifically comprises the following steps:
wherein steps S1 and S2 are the same as those of the above-described embodiment 2, and the description thereof will not be repeated here;
s3: and (3) primarily judging the temperature, judging whether the current temperature reaches a set fire alarm temperature threshold value after the smoke sensor detects that the smoke triggers the temperature sensor to work, if so, comparing the received temperature values at all times by the control module, and if not, not comparing the temperature by the control module, wherein the temperature sensor is in a standby state.
S4: and (3) temperature comparison and judgment: when the temperature reaches the threshold value, the comparison judgment is performed on the temperature obtained in step S2, and the specific judgment process is the same as that of step S3 of example 2.
S5: and outputting an alarm signal: after the comparison of all the temperature values is completed, the final value of the counter is compared with the set alarm response value, and if the final value of the counter is greater than or equal to the set alarm response value, the control module outputs an alarm signal to the alarm module. The alarm response value is set in the same manner as described in embodiment 2.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (4)
1. The alarm control method is based on a false alarm-proof smoke detection alarm and is characterized by comprising 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 alarm control method comprises the following steps:
s1: triggering a temperature sensor: when the smoke sensor detects a smoke signal, the smoke signal is transmitted to the control module, so that the temperature sensor is triggered to work;
s2: and (3) collecting temperature data: after the temperature sensor is triggered, detecting the temperature of the surrounding environment within a certain time range, setting a counter count by a control module, initializing the counter count, acquiring temperature data at a plurality of moments, and transmitting the acquired temperature data to the control module according to time sequence;
s3: and (3) temperature comparison and judgment: comparing and judging the temperature obtained in the step S2, and accumulating 1 by a counter if the temperature value at the later moment is larger than the temperature value at the former moment as a result of temperature comparison;
the temperature comparison judgment is specifically as follows:
comparing the acquired temperature T0 at the first moment with the temperature T1 at the second moment, and continuously comparing the higher temperature value of the acquired temperature T0 at the first moment with the temperature at the next moment until the comparison of all the temperature values is completed; or comparing the acquired temperature TN at the previous moment with the adjacent temperature TN+1 at the next moment until the comparison of all the temperature values is completed;
s4: and outputting an alarm signal: after the comparison of all the temperature values is completed, the final value of the counter is compared with the set alarm response value, and if the final value of the counter is larger than or equal to the alarm response value, the control module outputs an alarm signal to the alarm module.
2. The alarm control method according to claim 1, wherein in step S2, when temperatures at a plurality of times are obtained within a certain time range, the interval time between each adjacent time is the same, and the temperature sensor is controlled by the clock module to obtain temperature data at different times.
3. The alarm control method according to claim 2, wherein in step S4, the alarm response value is set to be a product of the number of all temperature values and a percentage, and the percentage is greater than or equal to 60%.
4. The alarm control method according to claim 3, wherein after step S2, a preliminary judgment process is provided for comparing the detected temperature value with the fire alarm temperature threshold, and when the temperature value reaches the fire alarm temperature threshold, a temperature comparison judgment is made.
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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 |
| CN115047927B (en) * | 2022-05-31 | 2024-02-27 | 北京北方华创微电子装备有限公司 | Temperature monitoring method and device in semiconductor process |
| CN115171320B (en) * | 2022-06-29 | 2023-11-14 | 万霖消防技术有限公司 | Fire control monitoring method and system |
| CN116206425A (en) * | 2022-12-29 | 2023-06-02 | 上海东方希望软件科技有限公司 | Intelligent analysis alarm method for aluminum electrolysis cell |
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